DE102015224702B4 - Sole elements and shoes - Google Patents

Abstract

Sole element for a shoe, wherein the sole element comprises: a. a first portion (110; 210; 310) and a second portion (120; 220; 320); b. the second portion comprising a deformable material (121; 221; 321) configured to generate heat when deformed; c. a transport member (130; 230; 330) configured to selectively guide the generated heat from the second portion to the first portion; d. wherein the deformable material (121; 221; 321) comprises a foam material.

Description

1. Technical area:

The present invention relates to a sole element, for example an insole, for a shoe, in particular a sports shoe, as well as a shoe, in particular a sports shoe.

2. State of the art:

Shoes can provide their respective wearer with various functionalities, such as: As traction, damping, protection against sharp objects, thermal management, etc. provide. Different areas of a shoe can be equipped with different properties according to the different needs in these areas.

It is Z. B. from the document US 6,528,140 It is known that an article of footwear can provide a dual energy management system. For example, a first region in a forefoot portion may comprise an elastic material, whereas a second region in a hindfoot portion may comprise a viscous material. Such a design may take into account the passive and active peak forces that occur during natural motion. Optimizing the distribution of force within a shoe, or more generally the cushioning properties of a shoe, is generally an area where a variety of research efforts have been and are being made.

Another important aspect of footwear is to optimize their thermal management. For example, it may be a requirement of a shoe to keep the wearer's foot warm. Various approaches are known in the art to insulate the interior of a shoe so that the feet remain warm even in a cold environment.

For example, that describes US 4,055,699 a multi-layer insole that can be placed in an article of footwear to isolate the foot from the cold that develops in the sole when walking on a cold surface. The insole has four superimposed layers, namely a thin soft fabric layer, an open cell foam layer, a dense cross-linked polyolefin layer, and a moisture barrier layer of polymeric material with an aluminum coating on its underside.

document US 4,887,368 discloses insoles for providing thermal insulation and for storing and distributing heat on the areas of the outer layer (skin). The insoles are formed from a foam layer and a further foam layer, wherein a flexible thermally conductive metal layer is arranged between the foam layers.

However, mere isolation of a shoe from its surroundings may not be sufficient to keep certain areas of a foot warm, for example the toe area, especially when the shoe is used for a long time in a cold environment.

document US 2011/0247235 A1 discloses an insole having a seventh ring forming a chamber for receiving a reactive chemical mixture which can be subjected to exothermic evolution of heat. The container is contacted by a thermally conductive element. A chemical reaction may be activated in the chemical mixture or a phase change material may be used.

However, generating heat by means of chemical reactions or phase transitions may require the use of toxic substances. In addition, such an approach is a one-time process, so the chemical mixture often has to be changed, which is costly and laborious.

Another approach in the US 2012/0192452 A1 is to use a fabric for an insole that can absorb and store excess heat from the feet and then release it when needed to warm the feet. A phase change material may be provided in the tissue. However, even with this approach, the amount of energy that can be used to warm the foot is limited. When the shoes are used in a cold environment, the stored heat can be used up quickly, causing the feet to become cold over time.

DE 10 2005 024 919 A1 discloses a device for converting kinetic energy into heat. The heat is generated by two successively arranged in the main direction of movement moldings, of which at least one consists of a polymer plastic and is elastically movable and which are structured on their opposite surfaces so that when a Aufeinanderzu movement of the moldings a frictional heat generating surface friction results.

US Pat. No. 3,493,986 discloses a sealed casing ("casing") in a shoe with tightly packed particles piezoelectric and / or magnetostrictive material. When the top or bottom of the housing is repeatedly subjected to a force, useful amounts of heat are produced.

There is therefore a need for shoes and / or elements of shoes that provide better ways to keep a wearer's feet warm. It is an object of the present invention to provide such shoes and / or elements of shoes.

3. Summary of the invention:

According to one aspect of the present invention, this object is at least partially solved by a sole element, in particular an insole, for a shoe, in particular for a sports shoe. The sole member may have a first portion and a second portion, wherein the second portion may comprise a deformable material that may be configured to generate heat when deformed. The sole element may further comprise a transport element configured to selectively guide the generated heat from the second section to the first section.

It may be considered as a concept underlying the present invention to utilize the impact energy at each step of the carrier by means of the deformable material which is designed to repeatedly generate heat every time it is deformed. In particular, the deformable material may be configured to generate heat by being repeatedly deformed. Each time the foot of the wearer touches the ground, the corresponding impact energy from the deformable material is at least partially transformed into heat. Moreover, the transport member (heat transfer member) is configured to selectively guide the generated heat to the first portion, so that the temperature of the first portion can be raised. Thus, at each step the wearer makes, heat can be generated in the second section and delivered to the first section. Thus, the sole member can repeatedly provide heat so as to prevent the feet from getting cold while the wearer is walking or running. Instead of relying on heat diffusion or other inefficient mechanisms, by using a special transport element designed to selectively guide the generated heat to the first section, efficient transport to the first section where the heat is actually needed can be ensured.

In some examples, resilience of the deformable material is below 80%, preferably below 65%, even more preferably below 50%, most preferably below 35%, e.g. Below 15% or even below 10%. In deformable materials having such a low resilience, a large proportion of the impact energy is transformed into heat, resulting in a particularly effective heating of the sole element, particularly when it is repeatedly deformed. In some examples, a deformable material having a resilience of less than or equal to 5% may be used, e.g. B. a material sold under the trade name Elastopan ^® , z. B. Elastopan ^® CS 9850 from BASF ^{® is} known. For example, a resilience between 1% and 5%, e.g. Of about 2%.

A resilience of a material may, for. B. based on ISO 8307 be measured. According to this standard, a pendulum with a ball is released from a height ho and brought to rebound from a sample of the material. The corresponding resilience value is given by the ratio hR / ho, where hR is the maximum height reached by the ball after a first rebound from the material.

It should be noted that the term "comprising" as used herein also includes the term "consist of". In addition, the terms "one or more" or "at least one" include any number, e.g. B. 1, 2, 3, 4, 5, ..., as well as the terms "two or more", "three or more", etc., and "a variety of" with a. Finally, the terms "at least in part" or "at least partially" as used herein also include the meaning "complete."

In some examples, the first portion comprises a resilient material having a resilience greater than a resilience of the deformable material, preferably at least 15% higher, more preferably at least 25%, even more preferably at least 40%. or 41%, or at least 50%, or at least 70%, and in some embodiments, about 80%. The deformable material may, for. B. have a resilience of about 10%, with a resilience of the spring-back material is at least 50% higher, z. For example, the resilience may be about 60% or higher. The first section can thus contribute to the energy return of the sole element. Despite relatively low resilience of second portion deformable material, the impact energy associated with ground contact may be relatively elastically returned to the wearer by virtue of the high resilience of the first portion rebound material become. This trade-off may allow for more efficient walking or running because the wearer of the first portion will wear the wearer less quickly, while at the same time the heat generated by the deformable material of the second lower resilience portion will be the wearer's feet keeps you warm.

In some examples, a resilience of the resilient material may be higher by a certain factor than a resilience of the deformable material. For example, a resilience of the resilient material may be at least two times, at least five times, or at least ten times higher than a resilience of the deformable material. For example, a resilience of the deformable material may be about 5%, and a resilience of the resilient material may be at least ten times higher, that is, at least about 50%.

The resilience of the resilience material may be at least 20%, preferably at least 35%, more preferably at least 50%, more preferably at least 60%, at least 65% or at least 76% and in some embodiments about 85%. A high degree of resilience may allow for higher energy return of the sole member, allowing for a higher level of energy return. For example, expanded polymeric materials, e.g. In pellet form, for the spring-back material. Specifically, z. B. expanded thermoplastic polyurethane (eTPU), in particular in foamed pellet form can be used, resulting in a resilience of 50% to 90% or 55% to 65%, z. B. can provide about 60%. Additionally or alternatively, ethylene vinyl acetate (EVA) may be used, for example, with a resilience between 30% and 60%, e.g. B. of about 40%.

In some examples, the springback material may have a thermal conductivity that is below 100 mW / (K * m), preferably below 75 mW / (K * m), more preferably below 60 mW / (K * m). Thus, the rebounding material may help to insulate the first section from the ground. Heat can be selectively transported to the first section and with the aid of the springback material, the first section can be isolated from the floor so that the heat is delivered to the foot of a wearer and does not leak out of the sole element. Specifically, EVA can be used as a spring back material with a thermal conductivity of 65 mW / (K · m) to 75 mW / (K · m), e.g. B. about 70 mW / (K · m). Additionally or alternatively, expanded polymeric materials, e.g. In pellet form, e.g. B. eTPU, in particular in pellet form, which has a thermal conductivity of 40 mW / (K · m) to 60 mW / (K · m), z. B. about 54 mW / (K · m), may have. The thermal conductivity values refer to values at a mean temperature of about 25 ° C. The values for the thermal conductivity can, for. B. according to GB / T 10295-2008 or according to another suitable method.

The deformable material comprises a foam material, in particular a (poly) urethane foam material. This class of material can provide a high level of heat generation while providing cushioning for the foot. For example, the material already mentioned, that under the trade name Elastopan ^®, z can. B. Elastopan ^® CS 9850, from the company BASF ^® , can be used. Additionally or alternatively, foamed EVA may also be used.

The sole element can, for. As an insole or as part of an insole. An insole can be removably inserted into a shoe, especially in a sports shoe. Providing the sole element as an insole therefore allows easy replacement of the thermal properties of a shoe. For example, depending on the season or current weather conditions, a shoe may be combined with a corresponding insole having appropriate thermal properties. As another example, the first and second portions, respectively, may be placed in an insole as needed for a specific wearer and / or specific type of use of the shoe so that the shoes may be individually tailored as desired. In addition, the deformation of the deformable material needed for heat generation takes place by providing the second portion and its deformable material in an insole close to the foot. This can help minimize the shear forces associated with deformation.

The second portion may have a thickness that is greater than a thickness of the first portion. A relatively large thickness of the second portion may allow for a larger volume of deformable material such that the amount of energy absorbed upon impact of the foot on the ground is greater, and thereby the heat generated by the deformable material in the second portion , can be increased. In addition, the greater thickness of the second portion compared to the first portion may help to maximize the impact forces acting on the second portion during walking / running.

In some examples, the deformable material in at least a portion of the second portion is arranged to extend over at least 40% of a sole member thickness, preferably over between 50% and 95% of the sole member thickness, more preferably between 75% and 90% % or about 85% of the thickness of the sole element. In this case, the deformable material can be arranged as a continuous section. Alternatively, the deformable material may also be arranged as a plurality of separate sections, where appropriate, other sections may be arranged with other properties in between. Each separate portion of the deformable material may be continuous, e.g. B. be provided in one piece without holes. In general, an arrangement of the deformable material over a large proportion of a thickness of the sole element, for. As an insole, the amount of heat generated by the deformable material increase. At the same time, it can optimize the functionality of the sole element when a small portion of the thickness of the sole element is used for other materials. For example, lining may be provided on an upper surface of the second section. Also, a coating may be provided on an upper and / or lower surface of the second portion, etc. In addition, an insulating member may be disposed on an upper and / or lower surface of the second portion, etc. Such other materials may provide the second section with other functionalities, e.g. As a pleasant feel (feel), insulation, etc., in addition to the heat generation functionality.

In at least a portion of the second portion, the deformable material may be arranged to have a vertical extent greater than an average thickness of the sole member. This aspect can help to maximize the amount of heat that can be generated by the deformable material during a single impact. The deformable material may be provided with a relatively large vertical extent so that it has a large volume which can be deformed to generate heat. At the same time, the relatively large vertical extent of the deformable material, compared to an average thickness of the sole element, can ensure that the impact forces acting on the deformable material are large compared to other parts of the sole element.

In some examples, the second portion forms at least one protrusion on an upper surface of the sole member. This may help to ensure that the second portion and its deformable material is actually deformed during walking or running. For example, the foot of a wearer when touching the ground may tend to flatten the at least one protrusion so that deformation of the deformable material may be increased. Additionally or alternatively, the deformable material may form at least one projection on an upper surface of the sole element.

In some examples, the second portion may be configured to extend at least partially in a rear half of a foot, e.g. B. in a hindfoot region, preferably in a heel area of the foot, z. B. in an area below the heel bone (calcaneus) of the foot to extend. The area below the heel bone of the foot usually touches the ground first, so typically this half of the foot is exposed to a high level of impact energy. Thus, it may help to maximize the heat generated at each step when placing the heat-generating second portion with its deformable material in this area or generally in a hindfoot area, and thus can provide a particularly high thermal effect. At the same time, it is not so important in this area of the foot to provide a high level of energy return. In some embodiments, the second portion may be configured to extend completely in a rear half of a foot, e.g. B. in a hindfoot region, preferably in a heel area of the foot, z. B. in an area below the heel bone of the foot to extend.

Additionally or alternatively, the second portion may also be arranged in a toe area, for. B. in an area under the heads of the metatarsal heads (metatarsal heads). These areas tend to get cold the quickest. Providing the second section in these areas can therefore be particularly effective. A sole according to the invention may therefore comprise a plurality of second sections of deformable material at different locations of the sole. For example, at least two second sections may be provided, e.g. B. one in the heel area and one in the forefoot area.

The first portion may be configured to extend at least partially in a metatarsal and / or a forefoot region and / or a toe region of a foot. Placing the first portion in said areas of the foot provides a higher energy return, which may be advantageous. A material having high elasticity, which is less likely to generate heat when deformed, may be disposed in these regions.

In some examples, the transport element, for. B. only partially or completely overlap with an upper and / or lower surface of the second portion, preferably at least over 50% of the upper and / or lower surface of the second portion, more preferably at least over 80% of the upper and / or lower surface of the second portion, and / or up to 100% of the upper and / or lower surface of the second portion. Providing such overlap between the second portion and the transport member configured to selectively transfer heat from the second portion may allow improved heat transfer from the second portion to the transport member so that the transport member effectively generates the heat generated by the second portion can transport. Additionally or alternatively, the transport element may overlap with an upper and / or lower surface of the deformable material in said circumference. For example, the transport member may have a heat absorbing portion that overlaps with the second portion in the mentioned amount. It is also possible for the transport element additionally or alternatively to have one or more sections which extend in the second section and / or in the deformable material. For example, such a section of the transport element may be arranged between two or more parts of the second portion or the deformable material of two or more such parts of the second portion.

The transport element may comprise a thermally conductive element. This can enable efficient and rapid transport of the heat generated in the second section to the first section.

In some examples, the transport element has a thermal conductivity of at least 150 mW / (K * m), preferably at least 200 mW / (K * m), more preferably at least 220 mW / (K * m) or approximately 250 mW / (K · M). With these values, a particularly good heat transfer can be ensured.

The transport element may, for. As a metal, in particular copper and / or aluminum. For example, the transport element may comprise a metal which is provided as a sheet which may be thin and / or light weighted. Such a transport element can have excellent heat transfer properties without adversely affecting the mechanical properties of the sole element. For example, a transporting member having a thickness of less than 100 μm and a thermal conductivity of about 250 mW / (K · m) may be provided. The transport element may comprise a printed metal. It may be achieved by printing or otherwise applying an ink, or generally a liquid containing metal or other thermally conductive material, e.g. In the form of particles.

The transport element may have a thickness of less than 1 mm, preferably less than 0.3 mm, particularly preferably less than 0.2 mm. For example, a transport element having a thickness of about 0.08 mm may be provided. The specified thickness can apply to the transport element over its entire lateral extent. Alternatively, it may apply to a majority of its lateral extent, e.g. B. more than 50%, more than 75% or more than 95% of its lateral extent, or it may be an average of its thickness.

In some examples, the transport element has at least one air channel. With the help of an air duct a convective heat transport can be made possible.

The transport element can be arranged at least partially over the first section. Thereby, the transport element may be able to deliver the heat in the direction of the feet over the first section. At the same time, the first portion may serve as an insulating means to prevent the heat transported by the transport member from being discharged towards the bottom. In particular, the transport element can be arranged so that it is arranged on the upper surface of a sole according to the invention. The heat can be transferred directly to the foot in this way. In particular, in some embodiments, the transport element may be arranged to be at least partially in contact with a foot.

In some examples, the sole element has a first insulating element that extends at least partially below the first portion and / or at least partially below the transport element. In particular, the sole element may have a first insulating element, which extends under the entire second portion and / or under the entire transport element. By providing such a first insulating member, it is possible to prevent discharge of the heat generated in the second portion toward the bottom in the region of the second portion. Additionally or alternatively, a discharge of the generated heat, which is transported by the transport element, can be prevented in the direction of the ground along the transport element. The first insulating element may, for. B. can be provided as an insulating layer. A layer is understood to be a relatively thin element which has a relatively large lateral extent Has. A layer may extend approximately parallel to the ground. A layer may extend through the entire sole or sole element (complete layer) or may extend in one or more regions of the sole or sole element (partial layer).

The first insulating member and the first portion may comprise the same material. This allows the insulating element and the first section z. B. are made integrally, for. B. so that the first portion extends at least partially under the second portion and / or the transport element. In addition, gaps between the insulating member and the first portion, through which the generated heat can be released in part, z. Due to seams or adhesive layers, etc., so that more efficient insulation of the sole element can be provided.

The sole element may have a second insulating element which extends at least partially over the transport element and / or at least partially over the second section. The second insulating element can contribute to the fact that generated heat from the transport element and / or the second portion is not delivered in areas where it is not desirable in the direction of the foot. The transport element may, for. B. be isolated in areas outside of the first section from above. Generated heat can then be delivered by the transport element only in an area of the first section, z. For example, the first portion may be disposed in a front region of the foot (eg, having a midfoot and a forefoot region of the foot), a forefoot region, and / or a toe region of the foot. The second insulating element may in such cases, for. B. in a hindfoot area, a midfoot area and / or a forefoot area, but not for example in a toe area of the foot. The second insulating member may generally have the same properties as the first insulating member, e.g. B. the same material. However, the first and second insulating elements may also be provided with different properties, e.g. As different materials, different thicknesses, different coatings, etc.

The transport element may have a forefoot portion, over which no insulating element or only one or more weakly insulating elements are arranged. This can ensure that heat in a forefoot area of the foot can be effectively delivered towards the foot of the wearer. In some examples, the transport member may include a toe portion over which no insulating member is disposed. In other examples, the transport member may include a front portion (i.e., a midfoot portion and / or a forefoot portion) over which no insulating member is disposed. A weakly insulating element may be a liner intended for comfort purposes. It can have a very low thermal conductivity. Such a feed can z. B. holes, so that at least a portion of the transport element is exposed.

The first insulating element and / or the second insulating element may comprise an airgel. It has been found that aerogels can provide good levels of insulation, and although these materials may be solid in many instances, softer airgel designs are available, such softer aerogels may include one or more additives, e.g. B. a polymer additive (eg rubber). In particular, it has been found that such softer aerogels are also suitable for providing close proximity to a foot, as they can provide good cushioning properties and can be flexible enough to conform to the shape of a wearer's foot without tending to have pressure points or to create bubbles.

In some examples, the first insulating element and / or the second insulating element have a thickness of less than 1 mm, preferably less than 0.5 mm, e.g. B. about 0.2 mm. Such thin elements can help to provide a low weight, low profile sole element. The first and / or the second insulating elements may, for. B. be provided as one or more coatings, so one or more layers, one or more films, etc.

The first insulating element and / or the second insulating element may have a thermal conductivity of less than 50 mW / (K · m). Such low levels of thermal conductivity can provide particularly good insulation of the sole element from the ground, and can ensure transport of the generated heat from the second section to the first section. In some examples, the first insulating element and / or the second insulating element may have a thermal conductivity of about 30 mW / (K · m). In the case of anisotropic insulating elements, the values of the thermal conductivity can be understood as those values which characterize the minimum of a thermal conductivity of the respective insulating element between the parts which are to be isolated from this insulating element (for example between, on the one hand, the transport element and / or the second section, and on the other hand the floor and / or foot of the wearer). In some examples, the first insulating element a first insulating material and the second insulating member may comprise a second insulating material, wherein the first insulating material and / or the second insulating material has a thermal conductivity of less than 50 mW / (K · m) or about 30 mW / (K · M).

In some embodiments, the deformable material serves as a second insulating element between a foot and the transport element.

In some embodiments, the second portion is disposed in an insole, and a midsole and / or an outsole ensure the function of a first insulating member. Such a midsole can z. As a polymer, such as. As EVA, polyurethane (eg., TPU) or a foamed polymer, such. B. eTPU have.

In some examples, a shoe, particularly a sports shoe, may be provided having a sole member according to one of the examples described herein.

According to another aspect of the present invention, a shoe may be provided, in particular a sports shoe, which may additionally or alternatively comprise a first portion and a second portion. The second portion may be disposed on a sole of the shoe and may include a deformable material that may be configured to generate heat when deformed. The shoe may also include a transport member which may be configured to selectively guide the generated heat from the second portion to the first portion.

As already mentioned, the deformable material configured to generate heat may utilize the impact energy at each step of the wearer. In particular, the deformable material may be configured to generate heat by being repeatedly deformed. Each time the foot of the wearer touches the ground, the corresponding impact energy from the deformable material may be at least partially converted to heat. In addition, the transport member may be configured to selectively guide the generated heat to the first portion so that the temperature of the first portion may be increased. Thus, at each step the wearer makes, heat can be generated in the second section and delivered to the first section. The shoe may repeatedly provide heat so that the wearer's feet do not become cold as long as the wearer continues or continues walking. Such a shoe does not need an external source of energy to heat up except for the mechanical energy provided by the wearer of the shoe.

The shoe may be combined with one or more sole elements as described above, and the first and second portions of the shoe, the deformable material of the second portion of the shoe, and the transport element of the shoe may be provided with the same aspects, as described herein with reference to a sole element.

In some examples, the transport element of the shoe may be at least partially disposed in an upper part of the shoe. This may allow heat to be transported to the top of the shoe or over the top of the shoe. For example, the transport element can be arranged at least partially in a midfoot region, a forefoot region and / or a toe region of the upper part. As a result, heat can be transported to these areas of the shoe not only from below over the sole, but additionally or alternatively also via the upper part. For example, heat may be transported and discharged at two or more height levels of the foot (eg, the sole and the top), and / or from two or more opposite sides, or even from all sides. For example, a transport member may at least partially engage around a particular area so that heat can be dissipated throughout that area. For example, a transport element may be provided that has one or more loops around a forefoot portion of the foot.

The shoe may have an insulating layer which is at least partially disposed in an outsole and / or a midsole of the shoe. The insulating layer can help to insulate the shoe so that the generated heat is not unintentionally released to the floor.

In some examples, the insulating layer may be at least partially disposed in at least one recess of the outsole. By arranging the insulating layer in a depression, a sole having a small height can be provided because little or no additional space is needed for the insulating layer. A majority of the volume of the insulating layer may be disposed in the at least one recess of the outsole.

The shoe may have at least one profile element which is formed opposite the at least one recess on the outsole. Profile elements, such. Studs (studs, cleats), etc., can help provide the soles provided Increase traction. By using a recess, which is typically formed in the outsole against such profile elements shoes can be provided with a particularly low height. Also, the heat loss due to the lugs etc. that may be in the floor, especially in a wet and / or a cold floor, can be further reduced by placing an insulating material in the recess of these structures.

The shoe may have at least one profile element, wherein the at least one recess is arranged in the profile element.

The insulating layer may comprise a foam material, in particular a (poly) urethane foam material. The insulating layer may be provided generally with the same properties as the first and second insulating elements discussed above. Such material is generally light in weight so that adding the material does not significantly change the weight of the shoes, or even reduce the weight as compared with integrally formed studs, etc.

The aspects described herein may be applied to a variety of sports shoes, e.g. As soccer shoes, rugby shoes, running shoes, etc. It should be noted that the sole elements and shoes, which are described herein, can be provided without a transport element. For example, a second portion may be provided in the shoe and / or sole member, the second portion having a deformable material having a relatively high viscosity and / or a relatively low resilience, as described herein, so that excess heat may be generated. by repeatedly deforming the deformable material. Such a second section may, for. B. under a region of a foot to be warmed, z. B. a toe area and / or a forefoot area. Additionally or alternatively, the excess heat without a specially provided transport element can be selectively guided to a first portion of the shoe and / or the sole element, for. B. in that the first portion is arranged so that it contacts the second portion.

The invention also extends to a sole element having a first portion and a second portion. The second section comprises a deformable material having a resilience of less than 35%.

The deformable material may have a resilience of less than 35%, in particular less than 20%, still less than 10%, e.g. Between 1% and 5%. Such resilience values can be understood as values measured according to ISO 8307 at a temperature of 23 +/- 2 ° Celsius.

Such a sole element may have one or more of the characteristics described herein with respect to a sole element or a shoe. In particular, such a sole element can have no transport element or it can have one or more transport elements.

The invention also extends to an insole having a first portion and a second portion. The second section has a deformable material with a resilience of less than 80%.

The deformable material may have a resilience of less than 80%, more preferably less than 65%, less than 50% or less than 35%, and less than 20% in some embodiments. Such resilience values can be understood as values measured according to ISO 8307 at a temperature of 23 +/- 2 ° Celsius.

Such an insole may have one or more characteristics described herein with respect to a sole element or shoe. In particular, such an insole can have no transport element or it can have one or more transport elements.

4. Brief description of the figures:

Possible embodiments of the present invention will be further described in the following detailed description with reference to the following figures:

1A B: top view and view of individual parts of an exemplary sole element;

2A B: View of individual parts and various perspective and sectional views of another exemplary sole element;

3 : Another exemplary sole element.

5. Detailed description:

It should be noted that in the following only some of the possible embodiments of present invention can be described in detail. However, those skilled in the art will readily recognize that the specific details described with reference to these embodiments may be changed, further developed, or otherwise combined, and that some aspects of the specific embodiments described below are also omitted can. It is also to be understood that the aspects described in the following detailed description may be combined with aspects summarized in the sections above.

Various aspects are described in the detailed description with reference to sole elements that may be provided as insoles. It should be understood, however, that various parts and elements of the described sole members may be changed in shape and / or size and / or omitted so that sole members may be provided that do not form part of an insole. On the other hand, other parts and elements may be added to or exchanged with the described sole elements to form a midsole and / or outsole. In addition, an upper part can be added to the described sole elements, so that they form a whole shoe, in particular sports shoe.

1A shows a first example of a sole element 100 according to the present invention. The sole element 100 can be provided as an insole.

In the example of 1A has the sole element 100 a plurality of regions configured to be located at least partially beneath corresponding portions of a foot of a wearer. In the example of 1A has the sole element 100 specifically a hindfoot region having a heel region. In addition, the sole element 100 a metatarsal area on. The sole element 100 further includes a forefoot portion having a toe area.

In other examples, the sole member may 100 more generally, have one or more portions configured to be disposed at least partially beneath corresponding portions of a foot of a wearer. For example, a sole element 100 generally have a hindfoot region, which may have a heel region. The sole element 100 may have a midfoot area. The sole element 100 Additionally or alternatively, it may include a forefoot portion that may include a toe portion. The forefoot area and the metatarsus area may form a front area.

A sole 100 can generally have one or more first sections 110 exhibit. In example of 1A has the sole element 100 a single first section 110 on.

The first paragraph 110 of the sole element 100 extends in a forefoot area of the sole element 100 including a toe area of the sole element 100 , In other examples, the first section 110 at least partially in a front region of the sole element 100 extend. The first paragraph 110 may be at least partially in a metatarsal area and / or a forefoot area of the sole element 100 and / or a toe region of the sole element 100 extend. The first paragraph 110 may also be at least partially in a rear foot region of the sole element 100 extend. The first paragraph 110 may be configured to be substantially continuous over one or more of the regions of the sole element 100 to extend away.

In examples in which a plurality of first sections 110 may be one or more different first sections 110 for example at least partially in one or more different regions of the sole element 100 extend. Additionally or alternatively, one or more different first sections may be 110 also at least partially in one or more equal areas of the sole element 100 extend, for example at different heights.

A section can generally be understood as a room area. A section may also be understood as having one or more elements of the sole element which are arranged in this space area. For example, in a forefoot area and / or a metatarsal area of a sole element. As will be explained below, the first section 110 the sole element at least partially a lining element 110 , a transport element 130 or one or more heat release sections 132 of the transport element 130 and Z. B. an insulating element 160 optionally with a cover element 150 , have, for. B. as far as they are arranged in a forefoot and / or a midfoot region of the sole element.

The sole element 100 can also have one or more second sections 120 have in the example of 1A the sole element has a single second section 120 on. One and only second section 120 extends in a rear foot region of the sole element 100 including a heel portion of the sole element 100 ,

In other examples, the second section may 120 at least partially in a rear foot region of the sole element 100 extend. The second section 120 may also be at least partially in a metatarsal region and / or a hindfoot region of the sole element 100 and / or a heel region of the sole element 100 extend. The second section 120 may also be at least partially in a forefoot area of the sole element 100 extend. The second section 120 may be configured to be substantially continuous over one or more of the regions of the sole element 100 to extend away.

In examples in which a plurality of second sections 120 may be one or more different second sections 120 z. B. at least partially in one or more different areas of the sole element 100 extend. Additionally or alternatively, one or more different second sections may be used 120 also at least partially in one or more equal areas of the sole element 100 extend, z. B. at different heights.

A second section 120 may comprise a deformable material which is adapted to generate heat by being repeatedly deformed. In the example of 1A points to the second section 120 of the sole element 100 a heating element 121 on, by the deformable material is at least partially disposed. In the example of 1A the heating element extends 121 in a hindfoot region including a heel region of the sole element 100 , The heating element 121 also extends partially in a midfoot region of the sole element 100 , The heating element 121 may consist essentially of the deformable material, so that the terms heating element and deformable material can be used interchangeably. It is also possible that the deformable material only in one or more selected areas of the second section 120 is arranged. For example, it may be in a heel area of the second section 120 are located, for. In an area arranged to be below the heel bone of a wearer's foot. The deformable material may be in one or more areas of the second section 120 be arranged so that it passes through the entire second section in these areas 120 extends from the top to the bottom. Additionally or alternatively, the deformable material may be in one or more areas of the second section 120 be arranged so that it is not in these areas through the entire thickness of the second section 120 extends through.

In other examples, the heating element 121 differently arranged. The heating element 121 may be due to the particular geometry and / or position of the corresponding second section 120 be adjusted. In some examples, two or more heating elements may be provided.

In other examples, the deformable material may be otherwise disposed within a sole member. For example, it is possible that no separate heating elements 121 can be distinguished geometrically. For example, the deformable material may be incorporated into other elements of the second section 120 of the sole element 100 be integrated. All aspects set forth herein with respect to one or more heating elements are therefore generally in one or more second sections 120 applicable.

The deformable material of the second section 120 of the sole element 110 may be arranged so that it is deformed whenever a wearer of the sole element 110 makes a step: at each step, the respective impact forces deform the deformable material of the second section 120 of the sole element. For example, when the foot of the wearer touches the ground, the deformable material is compressed. During each deformation, part of the impact energy is dissipated by the deformable material into heat. Thus, heat is generated at each step by repeatedly deforming the deformable material.

The deformable material may generally have low resilience. Specifically, the deformable material z. Provided with properties as explained in the "Summary of the Invention" section. The deformable material may comprise a viscous material.

The sole element 100 can generally have one or more transport elements 130 configured to selectively generate the generated heat from the second portion 120 to the first section 110 respectively. In the example of 1A is a single transport element 130 intended. The only transport element 130 extends from the second section 120 to the first section 110 , In other examples, two or more transport elements 130 to be provided.

A transport element 130 can generally have one or more heat release sections 132 that are configured to apply heat to one or more first sections 110 of sole element 100 to give, for. B. by direct contact. A transport element 130 may also include one or more heat absorption sections 131 have, which are designed to heat, z. B. via direct contact, of one or more second sections 120 of the sole element 100 to absorb, for. With the deformable material of the one or more second sections 120 of the sole element 100 ,

The transport element 130 may generally be provided with materials and properties as set forth in the Summary of the Invention section.

In the example of 1A has the transport element 130 a heat absorption section 131 which is configured to make thermal contact with the second section 120 of the sole element 100 and in particular with the heating element 121 , z. B. the deformable material of the heating element 121 , The heat absorption section 131 of the transport element 130 extends in the hindfoot region including the heel region of the sole element 100 , In addition, the heat absorbing portion extends 131 of the transport element 130 partly in the midfoot area of the sole element 100 , In general, the heat absorbing portion 131 of the transport element 130 be designed so that he over or under but z. B. in contact with the second section 120 of the sole element 100 and / or the deformable material of the second section 120 and / or the heating element 121 of the second section 120 is arranged. A surface of a heat absorbing portion 131 of the transport element 130 In general, it may be configured to transfer heat between the second section 120 and the sole element 100 and the heat absorption section 131 is maximized. For example, the surface of a heat absorbing portion 131 at least partially designed to be the second section 120 and / or a heating element 121 of the second section 120 and / or the deformable material of the second section 120 contacted directly. In the example of 1A is the heat absorption section 131 of the transport element 130 one piece without holes.

In the example of 1A has the transport element 130 two heat release sections 132 namely, a lateral heat releasing portion and a medial heat releasing portion. It should be noted that the transport element 130 can be made integral, for. For example, the heat release sections 132 and the heat absorbing portion 131 be made of the same material integral. In particular, the heat transfer element can be arranged so that there is a continuous heat transfer from the heat absorption section 131 to the heat release sections 132 provides. As in the example of 1A shown may be the lateral and / or medial heat delivery section 132 from a lateral and / or a medial side of the midfoot portion of the heat absorbing portion 131 of the transport element 130 out. The lateral and / or medial heat delivery section 132 may be along the lateral and / or medial side of the forefoot region of the sole element 100 extend. The lateral and / or medial heat delivery section 132 may be in a toe area of the sole element 100 end up. A width of the lateral and / or the medial heat-dissipating portion may be relatively constant, e.g. B. over the entire forefoot of the sole element 100 time. A width of the lateral and / or medial heat release section 132 may be in a toe area of the sole element 100 compared to a width in the remaining forefoot area of the sole element 100 be elevated. The increased width of one or more of the heat delivery sections 132 can help in the amount of heat in the first section 110 of the sole element 100 can be discharged, in particular in the toe area of the sole element 100 , The width of one or more heat-dissipating elements 132 can generally be found in the first section 110 be increased, or in a subsection or a specific area of the first section 110 in which increased heat output is desirable. In some examples, the medial and lateral heat release sections may be 132 partly meet or they can partly melt, z. B. in a toe area of the sole element 100 ,

In other examples, the one or more heat-absorbing sections and the one or more heat-dissipating sections may be provided differently than in the examples of FIGS 1A shown. For example, a different number of these sections may be provided and / or they may be relative to each other and / or to the remaining parts of the sole element 100 be arranged differently. For example, heat release sections, in addition to the approximate U-shape, can be used in 1A is shown to form a T-shape (a first elongate heat release portion terminates with a second elongate heat release portion approximately perpendicular to the first, eg, along the toe area), or a V shape (two not parallel elongated heat release sections extending from approximately the same area). Also in these examples, a width of one or more of the heat release sections may be increased in specific areas, e.g. B. in a toe area, z. For example, a width of the ends of the "T" and / or the "V" may be increased. In other examples, a single Heat output section are provided, the z. B. in the forefoot and / or the toe area of the sole element 100 extends. Additionally or alternatively, two or more heat absorbing sections may be provided. For example, two heat absorbing sections may be provided, e.g. B. along a medial side or a lateral side of the hindfoot region and / or the heel region of the sole element 100 are arranged.

Properties described in the "Summary of the Invention" section with respect to overlapping a transport element and a second section, as well as possibly extending a transport element into a second section, may more generally refer to one or more transport elements 130 , one or more heat absorption sections 131 and / or one or more heat release sections 132 be applied. The latter transport elements 130 and / or its heat absorption sections 131 and / or its heat release sections may, as described, be provided with one or more second sections 120 and / or one or more first sections 110 overlap or extend into it.

The sole element 100 can have one or more insulating elements 140 exhibit. The one or more insulating elements 140 may be at least partially above and / or below the second section 120 and / or the transport element 130 extend.

In the example of 1A has the sole element 100 a single insulating element 140 on. The insulating element 140 of the 1A partially extends in a rear foot region of the sole element 100 and extends in particular in a heel region of the sole element 100 , The insulating element 140 can be at least partially over the second section 120 and / or the transport element 130 be arranged. Thus, a transfer of the generated heat to the foot over the second section 120 and / or at least partially over the transport element 130 through the insulating element 140 be prevented. This can increase the amount of heat selectively from the transport element 130 to the first section 110 to be led. Additionally or alternatively, the insulating element 140 at least partially under the second section 120 and / or at least partially under the transport element 130 be arranged. An insulating element 140 that is arranged so that it is at least partially under the second section 120 and / or the transport element 130 can help prevent that in the second section 120 generated heat is discharged to the ground. This again increases the amount of heat from the transport element 130 selective to the first section 110 to be led. Viewed from a different angle, an insulating element 140 that is arranged so that it is at least partially under the second section 120 and / or the transport element 130 extends, helping to prevent heat from the soil in the sole element 100 penetrates.

In other examples, a plurality of insulating elements 140 to be provided. For example, one or more insulating elements 140 additionally or alternatively provided so as to be at least partially under the first section 110 extend. Such insulating elements can also insulate the sole element from the ground in areas where the first section 110 is arranged. Additionally or alternatively, one or more insulating elements 140 be provided at least partially over the first section 110 extend. Thus, heat can be allowed only in selected areas of the first section 110 is delivered to the foot.

In general, one or more insulating elements 140 as layers, coatings, films, etc., whereby materials, geometries and other properties can be used, as explained in the section "Summary of the invention".

The sole element 100 can also have one or more feed elements 190 exhibit. In the example of 1A is a single feed element 190 intended. The feed element 190 extends in a front region of the sole element 100 , In particular, the feed element extends 190 in a forefoot area including a toe area of the sole element 100 , In addition, the feed element extends 190 at least partially in a midfoot region of the sole element 100 , The feed element 190 can be designed so that it is above the transport element 130 is arranged. The feed element 190 can be designed so that it is permeable to heat. It can be designed so that the second section 120 generated and from the transport element 130 selective to the first section 110 guided heat in the first section 110 through the feed element 190 is delivered to the foot of the wearer. For example, the lining element 190 provided with one or more openings and / or holes, and / or the lining element 190 may have a grid structure and / or a network structure, etc., which the transport element 130 free in some sections, allowing a good heat transfer between the transport element 130 - In particular the heat transfer sections 132 - And the foot of the wearer is allowed. In addition or in Combination can be the feed element 190 have a low thermal conductivity. In general, the feed element 190 be configured so that it contacts a foot of the wearer. The feed element 190 may be configured to provide a pleasant feel and / or comfort, and known materials may be used.

In other examples, it is also possible that no feed element 190 is provided or one or more feed elements 190 can be provided differently. For example, one or more feed elements 190 be designed so that it extends over the entire sole element 110 extend. One or more feed elements 190 can be designed so that they are at least partially heat-insulating. For example, a food item or part of the food item configured to at least partially overlay a second portion 120 of the sole element 100 and / or at least partially over a transport element 130 extends, be designed as an insulating element.

While the heating element 121 , the transport element 130 , the insulating element 140 in the example of 1A As contiguous elements, one or more of these elements may be provided in other examples having one or more openings and / or holes. In addition, one or more of these elements may have a grid structure and / or a network structure, etc.

1B shows an enlarged view of the sole element 100 , this in 1A with its individual exemplary components shown in an exemplary order from the top to the bottom of the sole member 100 are shown.

According to the in 1B example shown, the heating element 121 and the lining element 190 above the transport element 130 be arranged. In this case, the heating element 121 at least partially over the lining element 190 be arranged. Specifically, the heating element 121 in a midfoot area above the feed element 190 be arranged. In other examples, the heating element in this area and / or in other areas under the lining element 190 be arranged. Alternatively, the lining element 190 and the heating element 121 be arranged side by side.

Furthermore, the insulating element 140 according to the in 1B shown example under the transport element 130 be arranged. It is possible that between the transport element 130 and the insulating element 140 another insulating element 160 and / or a cover element 150 of the insulating element is provided. In the example of 1B are the other insulating element 160 and the cover element 150 arranged so that they extend over the entire sole element 100 extend. In other examples, it may also be provided that the insulating element 160 and / or the cover element 150 only in one or more selected areas of the sole element 100 extend. The cover element 150 can over the insulating element 160 be arranged, as in the example of the 1B shown.

The insulating element 160 may have a foam material, for. For example, a TPU foam, and / or an airgel, wherein properties and dimensions may be provided, as generally explained in the section "Summary of the invention" for the first and second insulating member. The insulating element 160 may be configured so that there is insulation between the floor and those parts of the sole element 100 that provides over the insulating element 160 are arranged. In this way, it can be prevented that cold from the ground into the sole element 100 penetrates. In addition, it is possible to prevent heat generated by the deformable material from the sole element 100 is discharged to the ground. When the sole member is provided as an insole, such insulating member can prevent heat from the foot and heat generated in the insole from leaking toward the midsole, whereby the amount of heat flowing along the sides of the midsole toward the floor and to the midsole Environment flows out, can be limited. In addition to providing insulation, the insulating element 160 be configured to provide a damping. A similar insulating element may additionally or alternatively be above the transport element 130 and / or over the second section 120 be provided, wherein the similar insulating element z. B. may extend in a hindfoot region and / or a metatarsal region, so that heat loss to the foot can be prevented in these areas.

A cover element 150 can optional over (or in other examples below) the insulating element 160 to be provided. The cover member may be provided as a coating and / or a layer comprising insulating material. It can increase the insulation of the insulating element 160 provided. Additionally or alternatively, the cover element 150 be provided waterproof or water-repellent. Thus, moisture can be prevented from the soil in the sole element 100 penetrates.

It should be noted that while the various parts of the sole element 100 in the 1A and 1B are shown homogeneously. However, the various parts may include other elements and substructures that are included in the 1A and 1B are not shown. For example, individual parts may have multiple layers and / or multiple regions in which different materials and / or different properties are provided. In addition, with reference to the examples in the 1A and 1B explained aspects are also combined with or replaced by other aspects described herein.

2A shows an enlarged view of another example of a sole element 200 , 2 B shows a bottom view and various side and sectional views of the sole element 200 , In the example of 2A -B has the sole element 200 a heating element 221 , a transport element 230 , a first insulating element 260 , a second insulating element 270 and a feeding element 290 on. The sole element 200 may be configured to be provided as an insole.

The heating element 221 , the transport element 230 , the first insulating element 260 and the lining element 290 the exemplary sole element 200 can generally be provided as above with respect to the heating element 121 , the transport element 130 , the first insulating element 160 or the feed element 190 the exemplary sole element 100 described. For example, the first insulating element 260 have a cover. It should also be noted that the sole element 200 generally one or more of the heating element 221 , of the transport element 230 , the first insulating element 260 and / or the feed element 290 can have.

The transport element 230 of the sole element 200 can generally be provided in a similar manner as the transport element 130 of the sole element 100 , z. B. with similar materials, geometries and other properties. For example, the transport element 230 of the sole element 200 , similar to the transport element 130 of the sole element 100 , at least partially over or at least partially below the heating element 221 and / or the second section 220 be arranged of the sole element (see. 2 B for reference numerals 220 ). In addition, the transport element 230 one or more openings 233 have, such. In 2A shown. The one or more openings 233 can in a heat absorption section 231 of the transport element 230 and / or in a rear foot region of the transport element 230 be arranged. For example, the openings may provide better attachment of the heat transfer element 130 on the first insulating element 260 and second insulating element 270 allow, for. For example, an adhesive may be interposed between the surfaces of the first and second insulating members 260 . 270 be applied.

The one or more openings 233 can be symmetrical about a longitudinal axis of the sole element 200 and / or the transport element 230 be arranged. For example, as in 2A shown, two openings 233 be arranged on a lateral side of the hindfoot region and two further openings 233 may be on a medial side of the hindfoot region of the sole element 200 be arranged. The openings 233 may be oblong and / or they may extend along the lateral or medial sides. In other examples, only one opening may be used 233 or more than two openings 233 on the lateral or medial sides of the sole element 200 be provided. Additionally or alternatively, for. B. an opening 233 on a rear side of the sole element 200 be provided as in 2A shown. Such an opening 233 at a rear side may also be elongate and / or it may be arranged along the back. It may be provided as a portion of a circle or approximately in a U-shape so as to extend along an approximately circular rear side of the sole element 200 can extend. In other examples, one or more of the apertures described may be omitted so that the apertures may not be symmetrical.

The one or more openings 233 may allow an improved connection of the respective part of the sole, since they provide a direct connection, e.g. B. by bonding, between the first insulating element 260 and the one or more second insulating elements 270 through the openings 233 can enable. The transport element 230 For example, especially when it has a metal, it can bond relatively weakly to the first insulating element 260 and the one or more second insulating elements 270 especially when the latter elements comprise a polymer. By means of a direct connection between the first insulating element 260 and the one or more second insulating elements 270 through openings 233 in the transport element 230 can the transport element 230 be securely fixed with the sole, z. B. by gluing and / or hot pressing.

At the same time, the openings 233 be optimized that they still have sufficient transfer of the heating element 221 of the second section 220 generated heat to the heat absorption section 231 of the transport element 230 allow, so that the heat generated by means of the transport element 230 selectively to the first section 210 of the sole element 200 can be led (see 2 B to the reference numerals 210 and 220 ).

The sole element 200 may, as mentioned, also one or more second insulating elements 270 exhibit. The one or more second insulating elements 270 can generally be provided in a manner similar to the first insulating element 260 , However, the one or more second insulating elements may be 270 generally be configured so that it at least partially over the transport element 230 are arranged, ie between the transport element 230 and the foot of the wearer.

In addition, it is possible that the one or more second insulating elements 270 not over the entire area of the sole element 200 extend. For example, the one or more second insulating elements 270 be provided so that over a first section 210 of the sole element 200 no insulating element is arranged. For example, a toe area and / or a forefoot area of the sole element 200 have no overlying insulating element, z. B. between the toe area and / or the forefoot of the sole element 200 and the foot of the wearer. This can cause a heat emission towards the foot in such areas where the transport element 230 not from a second insulating element 270 and / or other insulating elements are covered, whereby these portions of the transport element can be made into heat-emitting sections.

However, in other examples, the one or more second insulating elements may be 270 indeed extend substantially over the entire area of the sole element. This can be z. B. be the case when the sole element 200 is provided for a shoe having one or more transport elements, which are arranged in an upper part of the shoe. For example, the one or more insulating elements 270 in such cases as to form a substantially continuous layer, but that of the one or more transporting elements 230 can be penetrated, extending from the second section 220 of the sole element to a first section 210 extend the sole member, which may be arranged for example in the upper part of the shoe.

Regarding 2A may be the second insulating element 270 generally in one area of the second section 220 of the sole element 200 extend. In the example of 2A the second insulating element extends 270 in a hindfoot region including a heel region, and also extends at least partially into a midfoot region. The part of the second insulating element 270 which extends in the hindfoot region, may have a rear foot portion of the insulating member 270 form. In other examples, the second insulating element may be 270 additionally or alternatively extend in one or more other areas.

The second insulating element 270 may be configured so that it at least partially over the heating element 221 or more generally over the second section 220 of the sole element 200 is arranged. In other words, the second insulating element 270 at least partially between the second section 220 of the sole element 200 and the foot of a wearer. The insulating element 270 Thus, an insulation between the second section 220 of the sole element 200 including a heating element 221 , and provide the foot of the wearer. Therefore, the second insulating member 270 help prevent that from the second material of the heating element 221 generated heat in the area of the second section 220 from the second section 220 is delivered to the foot of the wearer out. For example, in embodiments in which the transport element 230 , in particular the heat absorption section 231 of the transport element 230 above the heating element 221 of the second section 220 is arranged, one or more second insulating elements 270 for example, at least partially directly above the transport element 230 be arranged. On the other hand, one or more insulating elements 270 at least partially directly above the second section 220 and / or the heating element 221 and / or the deformable material of the second section 220 be arranged, for. When the heat absorbing portion 231 of the transport element 230 under the heating element 221 is arranged.

One or more second insulating elements 270 however, they may also be designed to be under the heating element 221 are arranged. In general, one or more second insulating elements 270 above the transport element 230 be arranged, for. B. at least partially directly above the transport element 230 , One or more second insulating elements 270 can between the transport element 230 and a foot of a wearer.

Specifically, the second insulating element 270 also between the transport element 230 and the heating element 221 be arranged. This can help in the deformation in the second section 220 , z. B. the heating element 221 to maximize every step. The second insulating element 270 can have one or more openings and / or holes 273 exhibit. The one or more openings and / or holes 273 may be configured so that they are in an area of the sole element 200 are arranged, where the deformable material, for. B. the deformable material of the heating element 221 provided. The one or more openings and / or holes 273 can be designed so that they are elongated. The one or more openings and / or holes 273 can be provided to ensure that the deformable material of the heating element 221 generated heat to the heat absorption section 231 of the transport element 230 can be transferred.

In the example of 2A has the second insulating element 270 an opening 273 extending from a center of a midfoot area of the sole element 200 to a center of a heel region of the sole element 200 extends. The opening 273 is elongated. A width of the opening 273 may increase from the midfoot area to the heel area. The opening 273 can be designed to heat that in the second section 220 is generated, for. B. in the heating element 221 , from the heat absorption section 231 of the transport element 230 is absorbed. In particular, the transport element 230 at least in part of the surface of the opening 273 through the second insulating element 270 in mechanical contact with the heating element 221 stand.

The one or more second insulating elements 270 can generally extend into areas where the second section 220 is arranged and / or in areas where the transport element 230 is arranged. A second insulating element 270 can generally be provided for isolation for a second section 220 and / or for a transport element 230 provide. In the example of 2A For example, the hindfoot portion of the second insulating element 270 an insulation for a corresponding rear foot section of the transport element 230 deploy and / or for the second section 220 which is arranged in a hindfoot area.

The one or more second insulating elements 270 may, as already mentioned, at least partially extend in a forefoot area. In the example of 2A is the second section 220 , z. B. the heating element 221 not in a forefoot area of the sole element 200 arranged, but the transport element 230 extends at least partially in the forefoot area. Therefore, the second insulating member 270 in the example of the 2A in the forefoot portion, are provided to the transport element 230 to isolate in this area. As in 2A the second insulating element can be shown 270 a lateral and a medial forefoot section 272 each of which is on the lateral and medial side of the sole element 200 extends in a rear part of the forefoot area. The lateral and medial forefoot sections 272 of the second insulating element 270 may be configured to at least partially over respective lateral and medial heat delivery sections 232 of the transport element 230 are arranged. For example, the lateral and medial forefoot sections 272 directly above the transport element 230 be arranged in a forefoot area. In general, one or more second insulating elements 270 at least partially over, for. B. directly above the transport element 230 be arranged in an area where the second section 220 or more specifically the heating element 221 , do not extend. This can be z. B. in a forefoot of the sole element 200 be the case, as in the example of 2A -B.

In general, one or more second insulating elements 270 be designed so that heat only in a certain area of the sole element 200 , z. B. in a toe area or a forefoot area, can be performed to the foot. For example, one or more second insulating elements 270 be configured so that they at least partially via a transport element 230 are arranged, wherein over a front region of the transport element 230 no insulating element is arranged.

As best in the medial, lateral or cross-sectional view along section AA the 2 B watch, the heating element 221 over a first insulating element 260 be arranged. The transport element 230 , the second insulating element 270 and the lining element 290 are not shown in these views for ease of illustration. These elements may be above the first insulating element 260 be arranged as above, z. B. with respect to the 1A -Federation 2A explained. These elements can also be above or below the heating element 221 or more generally above or below the second section 220 of the sole element 200 be arranged, as also explained above.

As in the in 2 B seen example, the heating element can 221 (in the example of the 2A -B from the heating element 221 may extend) in a hindfoot region, including a heel region and in particular a region under the heel bone. It also partially extends in a midfoot region of the sole element 200 , The first insulating element 260 can spread over the entire range of sole element 200 extend. The first insulating element 260 can have a constant thickness. Its thickness can be in the range of 1 mm to 5 mm, z. B. 2 mm to 4 mm, or about 3 mm. An average thickness of the heating element 221 may be larger than an average thickness of the first insulating member 260 , z. By a factor of 1.5 to 5 or from 2 to 4. An average thickness of the heating element 221 may be greater than an average thickness of the sole element 200 , z. B. by a factor of 1.5 to 5 or 2 to 4.

An average thickness of the transport element 230 and / or the second insulating element 270 may be smaller than an average thickness of the heating element 221 , z. By a factor of more than 10 or more than 50 or more than 100 or more than 200. An average thickness of the heating element 221 may be 4 mm to 20 mm, 6 mm to 16 mm or 8 mm to 13 mm.

The heating element 221 can, at least in one area, z. A region under the heel bone, have a thickness which is 40% to 100% or 50% to 95% or 75% to 90% or about 85% of the sole element.

The heating element 221 may have a profile that has a varying thickness. A thickness of the heating element 221 in a center (between the lateral and medial side) of the heating element 221 may increase from the midfoot area to the heel area (see section AA in 2 B ). For example, a thickness of the heating element 221 from about 30% to 70%, e.g. B. 50%, from a front part of the hindfoot area (section BB) to a central region of the hindfoot area (section CC) increase. The thickness in a center (between lateral and medial side) of the heating element 221 in a central part of the hindfoot portion (section CC) may be about 6 mm to 14 mm or 8 mm to 10 mm or 9 mm. The thickness of the heating element 221 may then remain relatively constant in a central part (eg, moving toward the back) of the hindfoot region. However, the thickness of the heating element may be 221 then at a rear edge of the sole element 200 and / or the heating element 221 increase again, z. B. to provide a support for the foot. For example, the thickness of the heating element may be 221 within a range of about 0.2 cm to 4 cm or about 0.5 cm to 2 cm to the trailing edge, increase to a value of about 10 mm to 20 mm or 12 mm to 18 mm or 16 mm to 17 mm.

Additionally or alternatively, a thickness of the heating element 221 in the center of lateral / medial cross sections (see sections BB and CC) of the heating element 221 be relatively constant. For example, a thickness of about 6 mm to 14 mm or 8 mm to 10 mm or 9 mm may be provided in a central part of the hindfoot region. However, the thickness may be at lateral and / or medial edges of the heating element 221 increase, z. B. to provide support for the foot. For example, the thickness of the heating element may be 221 within a range of about 0.2 cm to 4 cm or about 0.5 cm to 2 cm to the lateral and / or medial edge to a value of about 10 mm to 20 mm or 12 mm to 18 mm or 16 mm to 17 mm increase. In general, a thickness profile of the heating element 221 be designed so that it follows the shape of a heel of the wearer.

3 shows another example of a sole element 300 which is designed to be provided as an insole. The exemplary sole element 300 has a first section 310 on. In general, the first section 310 provided with aspects as described herein, e.g. B. with respect to the 1A -Federation 2A -B are described. Specifically, the first section 310 be configured to extend in a forefoot area including a toe area of the sole element 300 and / or at least partially in a midfoot region of the sole element 300 extends. The exemplary sole element 300 can also have a second section 320 exhibit. In general, the second section 320 provided with aspects as described herein, e.g. B. with respect to the 1A -Federation 2A -B. In particular, the second section 320 be configured to extend in a hindfoot region including a heel region (eg, including an area below the heel bone) and / or at least partially in a midfoot region of the sole element 300 extends. The second section 320 may be configured so that it is at least partially over the first section 310 is arranged, for. B. in the metatarsal area of the sole element 320 ,

The second section 320 may comprise a deformable material which is adapted to generate heat by being repeatedly deformed. The deformable material may be in a heating element 321 of the second section 320 be arranged. The heating element 321 may be arranged so that it is located in an area below a heel bone of the foot of a wearer. Often, the greatest impact forces occur during walking or running in this area. Therefore, arranging the heating element 321 in this area, the amount of heat by means of the deformable material of the second section 320 can be maximized. It is possible that the heating element 321 not on an edge of the sole element 300 or through the sole element 300 arranged sole is arranged so that leakage of heat to the sides of the sole is minimized.

The second section 320 may also have one or more stabilizing elements 322 generally at least partially adjacent to the heating element 321 can be arranged. In the example of 3 is the stabilizing element 322 around the heating element 321 arranged. Additionally or alternatively, the stabilizing element 322 also at least partially under the heating element 321 be arranged. For example, the stabilizing element 322 have one or more recesses into which the heating element 321 is inserted. In some examples, the heating element 321 at least form a projection extending over the stabilizing element 322 extends. In some examples, two or more heating elements may be used in the manner described 321 in the second section 320 to be provided. The heating element 321 can also be given such a shape, so that it is the structure and / or the function of the stabilizing element 322 takes over.

Similarly, two or more stabilizing elements 322 in the second section 320 to be provided. In other examples, the stabilizing element 322 and the heating element 321 be integrally formed of the same material. In particular, the second portion of the heating element 321 consist.

The one or more stabilizing elements 322 can generally be provided to increase the stability of the deformable material in the sole element 300 to increase. Additionally or alternatively, the stabilizing elements 322 be provided so that they include an insulating material, for. As described with respect to the first sections or one of the insulating elements described above, e.g. B. with respect to the 1A -B, 2A -B, 3 , The main function of the stabilizing elements 322 It may therefore also be the heating element 321 to isolate, for. B. to isolate it from an upper part of a shoe, and more generally from the lateral sides of a shoe, for. B. a heel cup. In such a case, a stabilizing element 322 also simply provided as an insulating element as described herein without providing additional stability functionality.

The first paragraph 310 and optionally also the second section 320 can be a food item 390 exhibit. The feed element 390 can be provided with similar aspects as with respect to the lining element 190 and the lining element 290 of the sole element 100 respectively. 200 have been described. Specifically, the feed element 390 the topmost element of the first section 310 be. It is possible that it is only in the first section 310 is provided or it may be at least partially in the area of the second section 320 extend. In the latter case, the feed element 390 z. B. also on the second section 320 be arranged.

The feed element 390 can generally be provided so that it is heat-permeable. In the example of 3 shows the food 390 a plurality of openings. In other examples may be in the feed 390 only a single opening or opening can be provided. The openings 390 of the lining can contribute to the heat permeability of the lining element 390 contribute. The openings can be regularly over the feed element 390 in the area of the first section 310 be arranged, such. In 3 shown. The feed element 390 may have a material with a high thermal conductivity.

In the example of 3 can have one or more transport elements 330 under the second section 320 in the hindfoot area or under the heating element 321 of the second section 320 , z. B. extending in the area under the heel bone of the foot, be arranged. The one or more transport elements 330 can be configured so that they are at least partially in the area of the first section 310 extend. The one or more transport elements 330 may be configured to selectively heat the generated heat from the second section 320 to the first section 310 Listen. For example, one or more transport elements may be provided that are the same as those with respect to the transport elements 130 and 230 of the sole element 100 respectively. 200 described are similar. In addition, suitable insulating elements may be provided, e.g. B. similar to those described above, z. B. with respect to the 1A -Federation 2A -B. As explained, these can help prevent that in the second section 320 generated heat in areas to the bottom and / or foot is discharged, where this is not desirable, for. In areas where the first section 310 is not arranged.

The sole element 300 may additionally comprise one or more other parts, as present, z. B. with respect to the 1A -Federation 2A -B, be described.

An aspect of the present invention may also relate to manufacturing a sole element and / or a sole as described herein. The various components of the sole element and shoe described herein may be secured together by application of a hot melt adhesive and by application of heat and pressure (hot pressing). For example, TPU can be used as a hot melt adhesive. Additionally or alternatively, other adhesives and / or adhesion promoters may be used. Specifically, with respect to the deformable material of the second portion, it can be said that this material can be attached to the other constituents of the sole element or shoe by using an adhesive which does not require hot pressing. These adhesives may be non-reactive adhesives, such as. B. pressure or contact adhesives; or reactive adhesives, such as. B. single or multi-component adhesives. These adhesives may, for. As polyurethanes (thermoplastic or thermosetting), epoxies, polyimides, etc. be. For example, the deformable material, e.g. When provided as a foam material, on the sole element or shoe, e.g. B. directly on the sole element or shoe to be molded (molded onto). The sole element can, for. When sewn to a shoe or attached to the shoe using an adhesive.

Claims (33)

Sole element for a shoe, wherein the sole element comprises: a. a first section ( 110 ; 210 ; 310 ) and a second section ( 120 ; 220 ; 320 ); b. the second section being a deformable material ( 121 ; 221 ; 321 ) configured to generate heat when deformed; c. a transport element ( 130 ; 230 ; 330 ) configured to selectively conduct the generated heat from the second portion to the first portion; d. the deformable material ( 121 ; 221 ; 321 ) comprises a foam material. Sole element according to claim 1, wherein a resilience of the deformable material is less than 80%, preferably less than 50%, more preferably less than 15%. Sole element according to claim 1 or 2, wherein the first portion comprises a spring-back material ( 150 . 160 ; 260 ) which has a resilience which is higher than a resilience of the deformable material ( 121 ; 221 ; 321 ), preferably at least 15% higher, more preferably at least 25% higher, and / or having a resilience which is at least 20%, preferably at least 35%, most preferably at least 50%. Sole element according to claim 3, wherein the rebounding material ( 150 . 160 ; 260 ) has a thermal conductivity of less than 100 mW / (K · m), preferably less than 75 mW / (K · m), more preferably less than 60 mW / (K · m). Sole element according to one of claims 1-4, wherein the foam material comprises a (poly) urethane foam material. Sole element according to one of claims 1-5, wherein the sole element as an insole ( 100 ; 200 ; 300 ) provided. Sole element according to one of claims 1-6, wherein the second section ( 120 ; 220 ; 320 ) has a thickness which is greater than a thickness of the first section ( 110 ; 210 ; 310 ). Sole element according to one of claims 1-7, wherein in at least a part of the second section ( 120 ; 220 ; 320 ) the deformable material ( 121 ; 221 ; 321 ) is arranged so that it extends over at least 40% of the thickness of the sole element, preferably over between 50% and 95% of the thickness of the sole element, more preferably between 75% and 90% of the thickness of the sole element. Sole element according to one of claims 1-8, wherein in at least a part of the second section ( 120 ; 220 ; 320 ) the deformable material ( 121 ; 221 ; 321 ) is arranged to have a vertical extent greater than an average thickness of the sole element. Sole element according to one of claims 1-9, wherein the second section ( 120 ; 220 ; 320 ) forms at least one projection on an upper surface of the sole element. Sole element according to one of claims 1-10, wherein the second section ( 120 ; 220 ; 320 ) is configured to extend at least partially in a rear half of a foot, preferably in a heel area of the foot. Sole element according to one of claims 1-11, wherein the first section ( 110 ; 210 ; 310 ) is configured to extend at least partially in a metatarsal region and / or a forefoot region of a foot. Sole element according to one of claims 1-12, wherein the transport element ( 130 ; 230 ; 330 ) with an upper and / or lower surface of the second section ( 120 ; 220 ; 320 ) overlaps, preferably at least over 50% of the upper and / or lower surface of the second portion, more preferably over at least 80% of the upper and / or lower surface of the second portion. Sole element according to one of claims 1-13, wherein the transport element ( 130 ; 230 ; 330 ) has a thermally conductive element. Sole element according to one of claims 1-14, wherein the transport element ( 130 ; 230 ; 330 ) has a thermal conductivity of at least 150 mW / (K · m), preferably at least 200 mW / (K · m). Sole element according to one of claims 1-15, wherein the transport element ( 130 ; 230 ; 330 ) Metal, in particular copper and / or aluminum. Sole element according to one of claims 1-16, wherein the transport element ( 130 ; 230 ; 330 ) has a thickness which is less than 1 mm, preferably less than 0.3 mm, more preferably less than 0.2 mm. Sole element according to one of claims 1-17, wherein the transport element ( 130 ; 230 ; 330 ) has at least one air channel. Sole element according to one of claims 1-18, wherein the transport element ( 130 ; 230 ; 330 ) is at least partially disposed over the first section. Sole element according to one of claims 1-19, wherein the sole element comprises a first insulating element ( 140 . 150 ; 260 ), which extends at least partially under the second section ( 120 ; 220 ) and / or at least partially under the transport element ( 130 ; 230 ). Sole element according to claim 20, wherein the first insulating element ( 140 . 150 ; 260 ) and the first section have the same material. Sole element according to one of claims 1-21, wherein the sole element comprises a second insulating element ( 270 ), which at least partially over the transport element ( 230 ) and / or at least partially over the second section ( 220 ). Sole element according to claim 22, wherein the transport element ( 130 ; 230 ; 330 ) has a forefoot portion over which no insulating member is disposed. Sole element according to one of claims 20-23, wherein the first insulating element ( 140 . 150 ; 260 ) and / or the second insulating element ( 270 ) has an airgel. Sole element according to one of claims 20-24, wherein the first insulating element ( 140 . 150 ; 260 ) and / or the second insulating element ( 270 ) has a thickness which is less than 1 mm, preferably less than 0.5 mm. Sole element according to one of claims 20-25, wherein the first insulating element ( 140 . 150 ; 260 ) and / or the second insulating element ( 270 ) has a thermal conductivity of less than 50 mW / (K · m). Shoe, in particular sports shoe, having a sole element according to one of claims 1-26. Shoe, a. comprising a first portion and a second portion; b. the second portion being disposed on a sole of the shoe and having a deformable material configured to generate heat when deformed; c. the shoe further comprising a transport member configured to selectively guide the generated heat from the second portion to the first portion; d. wherein the deformable material comprises a foam material. Shoe according to claim 27 or 28, wherein the transport element is at least partially disposed in an upper part of the shoe. Shoe according to one of claims 27-29, wherein the shoe has an insulating layer which is at least partially disposed in an outsole and / or a midsole of the shoe. Shoe according to claim 30, wherein the insulating layer is at least partially disposed in at least one recess of the outsole. Shoe according to claim 31, further comprising at least one profile element, which is formed opposite to the at least one recess on the outsole. Shoe according to one of claims 30-32, wherein the insulating layer comprises a foam material, in particular a (poly) urethane foam material.

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