WO2005070246A2

WO2005070246A2 - Sport shoes with improved characteristics

Info

Publication number: WO2005070246A2
Application number: PCT/HU2005/000003
Authority: WO
Inventors: László OROSZI
Original assignee: Oroszi Laszlo
Priority date: 2004-01-27
Filing date: 2005-01-26
Publication date: 2005-08-04
Also published as: WO2005070246A3; HU0400271D0; HUP0400271A2

Abstract

The subject of the invention relates to sport shoes with improved characteristics, which consist of a toe-part and a heel-part and side-parts between the former two parts, and an upper part constructed from an inner sole connected to these parts and an outsole connected to the upper part, the toe-part, the heel-part and the side-parts of the upper part have free rims situated on the side opposite the outsole, and the group of free rims encircle an opening. The characteristic feature of the invention is that on the heel-part (11) of the upper part (10) and/or at least one of the side-parts (13, 14) of the upper part (10) there is at least one split (30) running from the opening (16) to the outsole (20), the split (30) has a rim (31) and another rim (32), on the one side along the one rim (31) of the split (30) there a connection piece (40), while on the other side along the other rim (32) of the split (30) there is another connection piece (50) co-operating with the one connection piece (40), and the two sides of the split (30) are temporarily attached to each other with the help of the one connection piece (40) and the other connection piece (50), and another characteristic feature of the invention is that the inner sole (15) of the upper part (10) is divided into a front part (15a) and a rear part (15b), the front part (15a) is fixed to the toe-part (12), while the rear part (15b) is fixed to the heel-part (11), and the front part (15a) of the inner sole (15) and the rear part (15b) of the inner sole (15) are connected to the outsole (20) directly or via a fixing unit (70) so that they can move with respect to each other

Description

Sport shoes with improved characteristics The subject of the invention relates to sport shoes with improved characteristics, which consist of a toe-part and a heel-part and side-parts between the former two parts, and an upper part constructed from an inner sole connected to these parts and an outsole connected to the upper part, the toe-part, the heel-part and the side-parts of the upper part have free rims situated on the side opposite the outsole, and the group of free rims encircle an opening.

During the development of mankind the various types of footwear also went through significant changes. Recently shoes satisfying different systems of requirements have been developed for several sports. In the case of the shoes used for different purposes the lacing units allowing the feet to be entered into the inner space of the shoes and the shoelaces arranged in the lacing units always played an important part. The task of the lacing units is to make the size of the opening created on the upper part and the width of the shoes adjustable. Such constructions are described, for example, in patents No. US 5.996.256 and EP 826.318, in international publication document No. WO 99/22616 and in publication No. US 2003/0221334.

However, the generally used lacing unit solution, especially in the case of sport shoes used in sports where the ball is forwarded with the feet, such as football or rugby, has a significant disadvantage. The ball landing on the lacing unit cannot be adequately guided, and the players cannot handle and forward the ball appropriately with this quite significant part of their shoes. Nevertheless, there have been attempts to move the lacing units and the shoelaces to a less used part of the shoes or to cover them somehow. Such a solution is described, for example, in patent specification No. US 3.650.051.

However, the deficiency of these attempts was that the area coming into contact with the ball was never completely free of obstruction, and the constructions resulted in further uneven parts on the surface of the shoes, which could not provide a good solution.

Patent specification No. HU 222.806. describes a solution in Λvhich the toe-part of the sport shoes is divided into several zones, and each zone is provided Λvifh identical ribs of a specific shape guided differently in the different zones. This solution does increase the reliability of ball handling, and it also increases the accuracy of forwarding the ball. Although this solution can completely surround the lacing units, it cam ot completely exclude the deficiency of being able to guide the ball landing on the lacing unit.

Our aim with the solution according to the invention was to overcome the above deficiencies of the known sport shoes and to create a version which makes it possible to cover the whole surface of the toe-part of the shoes with guiding zones improving the guiding and handling of the ball.

The invention was based on the recognition that if specific structural elements are inserted between the toe-part and the heel-part of the shoes, and the side and/or heel-part of the upper part is divided taking into consideration these elements, then a construction can be created in the case of which there is no need for a lacing unit, the whole of the toe-part can be created in the desired form, while the sport shoes can be securely closed up even in the case of sports involving running and changing directions quickly, and so the task can be solved.

In accordance with the set aim the sport shoes with improved characteristics according to the invention, which consist of a toe-part and a heel-part and side-parts between the former two parts, and an upper part constructed from an inner sole connected to these parts and an outsole connected to the upper part, the toe-part, the heel-part and the side-parts of the upper part have free rims situated on the side opposite the outsole, and the group of free rims encircle an opening, are constructed in a way that on the heel-part of the upper part and or at least one of the side-parts of the upper part there is at least one split running from the opening to the outsole, the split has a rim and another rim, on the one side along the one rim of the split there is a connection piece, while on the other side along the other rim of the split there is another connection piece co-operating with the one connection piece, and the two sides of the split are temporarily attached to each other with the help of the one connection piece and the other connection piece.

A further criterion of the sport shoes according to the invention may be that an insert piece suitable for flexible deformation is inserted between the one rim of the split and the other rim of the split.

In the case of a possible construction of the sport shoes there is at least one split running from the free rim of the heel-part to the im er sole and/or there is at least one split running from the free rim of one of the side-parts to the inner sole and/or there is at least one split running from the free rim of the other side-part to the inner sole.

From the aspect of the invention it may be favourable if the one connection piece is near the one rim of the split, while the other connection piece is near the other rim of the split.

On the basis of a further aim the sport shoes with improved characteristics according to the invention, which consist of a toe-part and a heel-part and side-parts between the former two parts, and an upper part constructed from an inner sole connected to these parts and an outsole connected to the upper part, the toe-part, the heel-part and the side-parts of the upper part have free rims situated on the side opposite the outsole, and the group of free rims encircle an opening, are constructed in a way that the inner sole of the upper part is divided into a front part and a rear part, the front part is fixed to the toe-part, while the rear part is fixed to the heel-part, and the front part of the inner sole and the rear part of the inner sole are connected to the outsole directly or via a fixing unit, so that they can move with respect to each other.

A further criterion of the sport shoes according to the invention may be that the fixing unit consists of one or more fixed connection bodies attached to the rear part of the inner sole and a mobile connection body co-operating with the fixed connection body, there are passage openings arranged in the part of the outsole underneath the rear part of the inner sole, near the fixed connection bodies, a part of each mobile connection body of the fixing unit is pushed through the passage opening of the outsole and attached to the fixed connection body cooperating with it, and in this way the rear part of the inner sole is temporarily and securely fixed to the outsole.

In the case of a possible construction of the sport shoes the fixing unit comprises one or more fixed connection bodies attached to the front part of the inner sole and a mobile connection body co-operating with the fixed connection body, there are passage openings arranged in the part of the outsole underneath the front part of the inner sole, near the fixed connection bodies, a part of each mobile connection body of the fixing unit is pushed through the passage opening of the outsole and attached to the fixed connection body co-operating with it, and in this way the front part of the inner sole is temporarily and securely fixed to the outsole. ^• In the case of a further different realisation of the invention a guiding part-unit is inserted between the front part and the rear part of the inner sole, the front part of the inner sole has a guiding piece, while the rear part of the inner sole has a second guiding piece co-operating with the first guiding piece, and the first guiding piece and the second guiding piece are connected to each other in a way that they can slide along a straight line but they cannot turn. The first guiding piece is a sleeve cut into the front part of the inner sole, while the second guiding piece is a pin protruding from the rear part of the inner sole and sliding into the sleeve, or the first guiding piece is a sleeve cut into the rear part of the inner sole, while the second guiding piece is a pin protruding from the front part of the inner sole and sliding into the sleeve.

In the case of another different construction of the sport shoes, at least one of the passage openings is an elongated opening the main axis of which is parallel to the longitudinal axis of the sport shoes.

From the aspect of the invention it may be favourable that the fixed connection body of the fixing part-unit is a threaded sleeve, while its mobile connection body is a threaded pin provided with a tightening head.

In the case of a different solution of the sport shoes the fixing unit comprises at least one fixed connection body attached to the rear part of the inner sole, a supporting connection body connected to the outsole, and a mobile connection body inserted between the fixed connection body and the supporting connection body, the front part of the inner sole is securely fixed to the outsole, while there is a receiving opening in the part of the outsole situated underneath the rear part of the inner sole, near the fixed connection body, the fixed connection body is inserted in the receiving opening in a sliding way, and in this way the rear part of the inner sole is connected to the outsole so that it can slide with respect to the outsole. According to another possibility the fixing unit comprises at least one fixed connection body attached to the front part of the inner sole, a supporting connection body connected to the outsole and a mobile connection body inserted between the fixed connection body and the supporting connection body, the rear part of the inner sole is securely fixed to the outsole, there is a receiving opening in the part of the outsole situated underneath the front part of the inner sole, near the fixed connection body, the fixed connection body is inserted in the receiving opening in a sliding way, and in this way the front part of the inner sole is connected to the outsole so that it can slide with respect to the outsole.

In the case of another different construction of the invention the outsole is divided into a front part and a rear part, the front part is securely fixed to the front part of the inner sole of the upper part, while the rear part of the outsole is securely fixed to the rear part of the inner sole of the upper part, the fixing part-unit is inserted between the front part of the outsole and the rear part of the outsole, and a guiding part-unit is placed between the front part and the rear part of the outsole and/or the front part and the rear part of the inner sole.

In the case of a favourable realisation of the sport shoes the fixing part-unit comprises a fixed connection body, a supporting connection body and a mobile connection body inserted between the fixed connection body and the supporting com ection body, either the fixed connection body or the supporting connection body is situated on the front part of the outsole, while the other, either the fixed connection body or the supporting connection body, is situated on the real^* part of the outsole, and via the mobile connection body the front part of the outsole is connected to the rear part of the outsole in a movable way.

From the aspect of the invention it may be favourable if the guiding part-unit is formed by the first guiding piece of the front part of the irmer sole and the second guiding piece of the rear part of the inner sole co-operating with the first guiding piece, and the first guiding piece and the second guiding piece are connected to each other in a way so that they can slide along a straight line but they cannot turn. The first guiding piece is a sleeve cut into the front part of the inner sole, while the second guiding piece is a pin protruding from the rear part of the inner sole and sliding into the sleeve, or the first guiding piece is a sleeve cut into the rear part of the inner sole, while the second guiding piece is a pin protruding from the front part of the inner sole and sliding into the sleeve.

In the case of a further different realisation of the sport shoes the guiding part-unit is formed by the first guiding piece of the front part of the outsole and the second guiding piece of the rear part of the outsole co-operating with the first guiding piece, and the first guiding piece and the second guiding piece are connected to each other in a way so that they can slide along a straight line but they cannot turn. The first guiding piece is a sleeve cut into the front part of the outsole, while the second guiding piece is a pin protruding from the rear part of the outsole and sliding into the sleeve, or the first guiding piece is a sleeve cut into the rear part of the outsole, while the second guiding piece is a pin protruding from the front part of the outsole and sliding into the sleeve.

The greatest advantage of the sport shoes according to the invention is that they completely eliminate the ordinary long lacing unit normally situated on the toe-part, and in this way in the case of sport shoes for casual wear but especially in the case of sport shoes used in sports involving kicking the ball or handling the ball especially with the feet, it becomes possible to cover practically the whole area of the toe-part with guiding zones increasing traction with the ball, which makes ball games significantly more enjoyable.

Another significant advantage is that with the help of the new construction beside being able to move the toe-part and the heel-part away from each other and then towards each other again they can be securely closed up and the upper part and the outsole can be appropriately fixed, so even in sports involving running and changing position and direction quickly, e.g.: football or rugby, the shoes hold the player's feet at least as strongly as shoes with traditional lacing units.

A further advantage is that the solution according to the invention also makes it possible to increase or reduce the length of sport shoes of a given size, within certain reasonable limits. An advantage resulting from this is that when the sports shoes stretch, by using the construction according to the invention the size can be reduced, and so the original size of the sport shoes can be restored. Another advantage is that the shrinking of the sport shoes during use, e.g.: when they become smaller tlirough getting soaked, can also be compensated by increasing the distance between the heel-part and the toe-part, and so the original size can be restored even in cases like this.

A further advantage deriving from the construction according to the invention is that the shoes produced in large series according to ready-to-wear size-charts can always be accurately adjusted to suit the user's foot size, and as a result of this not only half sizes but even quarter shoe length sizes can be adjusted. It is also advantageous that in the case of young sportspeople, as their feet are growing, it is not necessary to replace sports shoes that are still fit for use, but the shoes can be "readjusted", and in this way the wear life of the shoes can be adjusted to their actual life even in the case of young sportspeople still growing.

It must be regarded favourable that the constructions according to the invention can be realised with simple tools, they fit in with the production technology of ordinary footwear, and the assembling of the new type of shoes does not require the complete or significant changing of the production technology.

The production of this new type of shoes does not require any real extra costs, so shoes providing a much wider service and a greater feeling of comfort, at a similar price can be launched on the market.

Below the invention is described in detail in connection with construction examples, on the basis of drawings. In the drawings figure 1 is the plan view of a possible version of the sport shoes according to the invention, in open position, figure 2 is the side view of another version of the sport shoes, partly in section, figure 3 is the view of sport shoes as in figure 2 taken from direction III, partly in section, figure 4 is the side view of a further different construction of the sport shoes according to the invention, partly in section, figure 5 is the side view of a further version of the sport shoes, partly in section, figure 6 is the side view of an even further different construction of the sport shoes, partly in section, figure 7 is the view of figure 6 taken from direction VII.

Figure 1 shows a version of the sport shoes 1 according to the invention which can be used as indoor five-a-side football shoes. It can be seen that the upper part 10 of the sport shoes 1 is constructed in the usual way from a heel-part 11, a toe-part 12, a side-part 13 and another side-part 14 connecting the heel-part 11 and the toe-part 12, and an inner sole 15 connecting the heel-part 11, the toe-part 12, the one side-part 13 and the other side-part 14. It can also be seen that on the toe-part 12 of the sport shoes 1 there is no lacing unit, so the whole area of the toe-part 12 can be covered with guide-strip zones described in patent specification No. HU 222.806., which significantly improves the ability to guide and handle the ball as well the accuracy of the shots.

The whole length of the inner sole 15 is attached to the outsole 20 in the ordinary way, by seaming and gluing. The free rim 1 la of the heel-part 11 of the upper part 10, the free rim 12a of the toe-part 12, the free rim 13a of the one side-part 13 and the free rim 14a of the other side-part 14 together encircle the opening 16 through which the user can put his/her feet inside the sport shoes 1.

At the same time it can also be seen in figure 1 that on the one side-part 13, on the other side-part 14 and also on the heel-part 11 of the upper part 10 there is a split 30. The split 30 of the heel-part 11 goes from the free rim 11a of the heel-part 11 to the inner sole 15, the split 30 of the one side-part 13 goes from the free rim 13a of the one side-part 13 to the inner sole 15, and the split 30 of the other side-part 14 goes from the free rim 14a of the other side-art 14 to the inner sole 15. It must be pointed out here that it is not absolutely necessary to have all three splits 30 on the upper part 10 of the same sport shoes 1. In the present case three splits 30 are shown on the upper part 10 in the interest of giving a simpler description.

The split 30 is situated between the heel-part 11 and the toe-part 12 of the upper part 10 in a way that near one of its rims 31 there is connection piece 40, while near its other rim 32 there is another connection piece 50. The joint task of the one connection piece 40 and the other connection piece 50 is to securely attach the one rim 31 and the other rim 32 of the split 30 to each other when the upper part 10 is in use. As a result of this the unit formed by the one connection piece 40 and the other connection piece 50 can be a hook-and-loop fastener, or it can be a fastening strap as used on baseball hats, which in our case is situated at the split 30 of the heel-part 11 of the upper part 10.

Between the one rim 31 and the other rim 32 of the split 30 there is an insert body 60, which is made of a flexible material. Its task is to create an expanding stopper in the splits 30 dividing the material of the upper part 10 all around, which makes it possible to fold apart the toe-part 12 and heel-part 11 of the sports shoes 1 as well as the two sides of the heel-part as compared to each other, but stops any dirt getting inside the sport shoes 1 through the upper part 10 when the upper part 10 is in its resting position.

When the sport shoes 1 shown in figure 1 are in use, in the course of putting on the sport shoes 1 the one connection piece 40 and the other connection piece 50 are separated from each other, and the upper part 10 is bent together with the outsole 20. In the course of bending, the one rim 31 and other rim 32 of the splits 30 on the upper part 10 near the opening 16 move away from each other increasing the size of the opening 16 and changing the position of the toe-part 12 and the heel-part 11 with respect to each other. In this bent position of the sport shoes 1, the user can put his/her foot through the expanded opening 16 inside the upper part 10.

After putting on the sport shoes 1 the upper part 10 is forced back in its original position by the insert body 60 stretching between the inner sole 15 and the outsole 20 on the one part and the one rim 31 and the other rim 32 of the splits 30 on the other part. At this point the splits 30 can be closed up with the help of the joint units formed by the one connection piece 40 and the other connection piece 50, which prevents the one rim 31 and the other rim 32 from moving away from each other, and by this the upper part 10 of the sport shoes 1 is appropriately and securely closed up on the user's feet.

Figures 2 and 3 show a version of the sport shoes 1 according to the invention, football shoes fitted with studs. The guide-strip zones mentioned above can be seen on the toe-part 12 of this version again, and it can also be seen that practically the upper part 10 is built similarly to that described in the previous example. In the case of this construction example too there is a heel-part 11, a toe-part 12 and a side-part 13 and another side-part 14 between them, which are also stitched to the inner sole 15. The free rim 1 la of the heel-part 11, the free rim 13a of the one side part 13, the free rim 12a of the toe-part 12 and the free rim 14a of the other side- part 14 encircle the opening 16 in this case too. Moreover, in this version again there is a split 30 made in the one side-part 13 running from the free rim 13a of the one side-part 13 to the inner sole 15, and a split 30 - which cannot be seen in figure 2 - running from the free rim 14a of the other side-part 14 to the inner sole 15. However, in this case the inner sole 15 is divided into a front part 15a and a rear part 15b. The front part 15a of the inner sole 15 is securely attached, i.e. stitched or glued, to the toe- part 12 of the upper part 10, to the part of the other side-part 14 extending to the one rim 31 of the splits 30 and to the outsole 20. At the same time the rear part 15b of the inner sole 15 is attached to the heel-part 11 and to the part of the one side-part 13 and the other side-part 14 extending from the heel-part 11 to the other rim 32 of the splits 30. But the rear part 15b of the inner sole 15 is not securely attached to the outsole 20!

In this case too, between the one rim 31 and the other rim 32 of the splits 30 there is an insert body 60, and also there is a connection piece 40 at the one rim 31 and another connection piece 50 at the other rim 32. The task of the insert body 60, the one connection piece 40 and the other connection piece 50 is similar to the task described in connection with figure 1.

However, there is a significant difference in the construction of the outsole underneath the heel-part 11 and in connecting the outsole 20 and the rear part 15b of the inner sole 15. A fixing unit 70 is inserted between the outsole 20 and the rear part 15b of the inner sole 15. In the case of this version of the invention the fixing unit 70 contains fixed connection bodies 71 and mobile connection bodies 72, while on the part of the outsole 20 underneath the heel-part 11 there are passage openings 21, as shown in figure 3.

Several of the passage openings 21 are elongated openings 22. The main axes 22a of the elongated openings 22 are parallel to the longitudinal axis la of the sport shoes 1. In the closed position of the sport shoes 1 the passage openings 21 and the elongated openings 22 are positioned right underneath a protruding connection body 71 each.

Figure 3 also shows that a guiding part-unit 80 is also inserted between the front part 15a and the rear part 15b of the inner sole 15. The guiding part-unit 80 comprises the first guiding piece 81 and the second guiding piece 82. In this case the first guiding piece 81 is an organised group of channels cut into the front part 15a of the inner sole 15, while the second guiding piece 82 is a series of pins positioned to suit the position and size of the organised channels, protruding from the rear part 15b of the inner sole 15, sliding into the channels of - li ¬

the first guiding piece 81. Practically the second guiding pieces 82 are made of a flexible but high-tensile material, such as steel plate.

Returning to figure 2, it shows that here the fixed connection body 71 is a threaded sleeve 71a set in the rear part 15b of the inner sole 15 in a way that it cannot turn, while the mobile connection body 72 is a threaded pin 72a suiting the threaded sleeve 72a, and on its end further away from the threaded sleeve 72 there is a tightening head 72b, which is a stud-head in the present case.

When using the sport shoes 1 shown in figure 2 and figure 3 first the mobile connection bodies 72 of the fixing unit 70 need to be loosened, and the mobile connection body 72 to be fitted in the passage opening 21 needs to be unscrewed from the fixed connection body 71 fitted in the rear part 15b of the inner sole 15. When the tightening head 72b of the mobile connection bodies 72 does not support the outsole 20 any more, the rear part 15b of the inner sole 15 can be pulled away from the front part 15a of the inner sole 15 in the direction of the longitudinal axis la of the sport shoes 1. The guided displacement of the front part 15a and the rear part 15b is realised in a way that the second guiding pieces 82 of the guiding part-unit 80 sliding in the first guiding piece 81 only allow movement along the longitudinal axis la, but they do not allow tilting or turning. The rear part 15b can be pulled backwards from the front part 15a until the threaded pins 72a of the mobile connection bodies 72 moving together with the rear part 15b hit the rim of the elongated openings 22 of the outsole 20. At this point the sport shoes 1 are completely open, the opening 16 is the largest in this position, and through this the user's feet can be put inside the sport shoes 1. Obviously, when the front part 15a and the rear part 15b move way from each other, the one rim 31 and the other rim 32 of the splits 30 of the upper part 10 also move away from each other, because the one connection piece 40 and the other connection piece 50 are not in closed position.

When the user has put his/her feet in the opening 16 of the sport shoes 1, the rear part 15b of the inner sole 15 is pushed forwards, and the pins protruding from the rear part 15b forming the second guiding pieces 82 slide back into the channels of the second guiding pieces 81 situated in the front part 15a of the inner sole 15, while the one rims 31 and the other rims 32 of the splits also end up situated next to each other. In this way with the help of the one connection piece 40 and the other connection piece 50 the one rims 31 and the other rims 32 of the splits 30 of the upper part 10 can be fixed. On the outsole 20 the threaded pins 72a of the mobile connection body 72 can be screwed back into the threaded sleeves 71a forming the fixed connection body 71. When the threaded pins 72a are screwed in, the tightening heads 72b reach the outsole 20 and press it against the rear part 15b of the inner sole 15 temporarily attaching by this the outsole 20 to the rear part 15b of the inner sole 15 too.

When taking off the shoes shown in figure 2 first the mobile connection body 72 needs to be unscrewed from the fixed connection bodies 71, and the connection between the joint unit formed by the one connection piece 40 and the other connection piece 50 needs to be released, then the rear part 15b of the inner sole 15 of the upper part 10 needs to be pulled back freely. When the rear part 15b reaches its outer extreme position, that is the threaded pins 72a of the mobile connection body 72 hit the edge of the elongated opening 22 of the outsole 20, then the sport shoes 1 can be taken off, because the user's feet can be pulled out from the sport shoes 1 tlirough the expanded opening 16.

Figure 4 shows a construction of the sport shoes 1 , where the act of moving the heel-part 11 and the toe-part 12 away from each other and approaching them to each other again is made possible by a fixing unit 70, in which beside the fixed connection body 71 and the mobile connection body 72 there is also a supporting connection body 73. In this version too the inner sole 15 is divided into a front part 15a and a rear part 15b, and between the heel-part 11 and the toe-part 12 there are splits 30 bordered by a rim 31 and another rim 32. Between the one rim 31 and the other rim 32 of the split 30 there is an insert body 60 made of a flexible material, and the split 30 is closed up with the help of a joint unit formed by the one connection piece 40 and the other connection piece 50 in this case too.

The front part 15a of the inner sole 15 is securely attached to the outsole 20, while the connection between the rear part 15b of the inner sole 15 and the outsole 20 is ensured by the fixing unit 70 according to the following. The fixed connection body 71 of the fixing unit 70 is a is a chunk protruding from the rear part 15b of the inner sole 15, while the supporting connection body 73 is a block situated in the receiving opening 23 of the outsole 20, attached to the outsole 20 or shaped from the same material. Between the supporting connection body 73 and the fixed connection body 71 there is a mobile connection body 72, the threaded pin 72a of which co-operates with the threaded sleeve 71 a of the fixed connection body 71. In the supporting connection body 73 there is a hole 73a, in which the mobile connection body 72 can freely turn, but it cannot slide out of it.

When using the sport shoes 1 shown in figure 4 the heel-part can be moved away from the toe-part 12 according to the following. Turning the threaded pin 72a of the mobile connection body 72 of the fixing unit 70 the threaded sleeve 71a situated in the chunk-like fixed connection body 71 of the rear part 15b of the inner sole 15 co-operates with the rotating threaded pin 72a of the mobile connection body 72 in a way that depending on the direction of rotation of the threaded pin 72a it moves along it either towards the toe-part 12 or away from the toe-part 12.

Due to the movement of the threaded sleeve 71a the fixed connection body 71 and together with it the rear part 15b of the inner sole 15 also moves, as a result of which the one rim 31 and the other rim 32 of the split 30 move away from each other facilitating entering the fee into the sport shoes 1, or they move towards each other clamping the feet put in the sport shoes 1. It must be pointed out here that the connection between the threaded pin 72a and the threaded sleeve 71a results in a self-closing connection, so the heel-part 11 and the toe-part 12 move exclusively as long as the threaded pin 72a rotates. After the rotation stops, the distance between the toe-part 12 and the heel-part 11 cannot be changed by external effect.

Figure 5 - similarly to figure 4 - shows a construction in which the fixed connection body 71 of the fixing unit 70 is attached to the front part 15a of the inner sole, while its supporting connection body 73 is attached to the rear part 15b of the im er sole 15 and also to the outsole 20. Here the front part 15a of the inner sole 15 and the outsole 20 can slide with respect to each other in the direction of the movement generated with the help of the mobile connection body 72 connecting the fixed connection body 71 and the supporting connection body 73.

Due to the construction of the fixing unit 70 the displacement of the front part 15a and the rear part 15b of the inner sole with respect to each other is realised as shown in figure 4, with the difference that in this case the front part 15a moves with respect to the rear part 15b and the outsole 20.

In the case of the sport shoes 1 shown in figure 6 and 7, besides dividing the inner sole 15 into a front part 15a and a rear part 15b the outsole 20 is also divided into a front part 20a and a rear part 20b. The toe-part 12 is securely attached to the front part 15a of the inner sole 15 and to the front part 20a of the outsole 20, while the heel-part 11 is attached to the rear part 15a of the inner sole 15 and the rear part 20b of the outsole 20. Between the front part 20a and the rear part 20b of the outsole 20 there is a fixing unit 70 and - in the case of this construction - also a guiding part-unit 80. The fixing unit 70 - similarly to figure 4 - contains a fixed connection body 71 fitted to the rear part 15b of the inner sole 15 and to the rear part 20a of the outsole, a supporting connection body 73 attached to the front part 15a of the inner sole 15 and to the front part 20a of the outsole 20, and a mobile connection body 72 between the two of them, which practically realises the forced connection generating movement. The fixing unit 70 operates in the same way as described in connection with figure 4.

When the mobile connection body 72 is turned, the displacement of the heel-part 11 and the toe-part moving away or towards each other in a certain direction is made possible by the guiding part-unit 80, which comprises the first guiding pieces 81 created in the front part 20a of the outsole 20 on the one part, and the second guiding pieces 82 co-operating with the first guiding pieces 81, created in the rear part 20b of the outsole 20 on the other part. Favourably the first guiding pieces 81 and the second guiding pieces 82 are connected together like the teeth of a comb, and they create such a connection of forms that makes movement possible exclusively in one single direction along the longitudinal axis la of the sport shoes.

It must also be pointed out that although the split 30 situated between the heel-part 11 and the toe-part 12 is shown in figure 4, figure 5 and figure 6, a construction of the sport shoes 1 is also possible, where the upper part 10 does not have splits 30, and it is constructed in the traditional way. In this case the divided inner sole 15 and/or outsole 20 and the fixing unit inserted between them may serve the purpose of making the upper part slightly wider or narrower. Obviously in such cases expansion can be realised only within the limits of the flexibility of the material of the upper part 10.

It is also obvious that in the case of the sport shoes 1 shown in the figures the upper part 10 constructions and the inner sole 15, outsole 20, fixing unit 70 and guiding part-unit 80 constructions can be combined optionally, but in each case it must be made possible to separate the heel-part 11 and toe-part 12 of the upper part 10 to facilitate putting on the sport shoes 1, and also it must be made possible to close them up securely in a way that the shoes can be worn while playing sports, even if there is no lacing unit at all on the toe-part 12 of the upper part 10.

The sport shoes according to the invention can be favourably used especially in ball games where the ball can also be furthered by feet, and practically guide-strips or guide-zones should be placed on the toe-part of the shoes.

List of references

sport shoes la longitudinal axis upper part 11 heel-part 11a free rim 12 toe-part 12a free rim 13 side-part 13a free rim 14 another side-part 14a free rim 15 inner sole 15a front part 15b rear part 16 opening0 outsole 20a front part 20b rear part 21 passage opening 22 elongated opening 22a main axes 23 receiving opening 0 split 31 rim 32 other rim 0 com ection piece 0 other connection piece0 insert body0 fixing unit 71 fixed connection body 71a threaded sleeve 72 mobile connection body 72a threaded pin 72b tightening head 73 supporting connection body 73 a hole 0 guiding part-unit 81 first guiding piece 82 second guiding piece

Claims

1. Sport shoes with improved characteristics according to the invention, consisting of a toe-part and a heel-part and side-parts between the former two parts, and an upper part constructed from an inner sole connected to these parts and an outsole connected to the upper part, the toe-part, the heel-part and the side-parts of the upper part have free rims situated on the side opposite the outsole, and the group of free rims encircle an opening, characterised by that on the heel-part (11) of the upper part (10) and/or at least one of the side-parts (13, 14) of the upper part (10) there is at least one split (30) running from the opening (16) to the outsole (20), the split (30) has a rim (31) and another rim (32), on the one side along the one rim (31) of the split (30) there a connection piece (40), while on the other side along the other rim (32) of the split (30) there is another connection piece (50) co-operating with the one connection piece (40), and the two sides of the split (30) are temporarily attached to each other with the help of the one connection piece (40) and the other connection piece (50).

2. Sport shoes as in claim 1, characterised by that an insert piece (60) suitable for flexible deformation is inserted between the one rim (31) of the split (30) and the other rim (32) of the split (30).

3. Sport shoes as in claim 1 or 2, characterised by that there is at least one split (30) running from the free rim (1 la) of the heel-part (11) to the inner sole (15).

4. Sport shoes as in any of claims 1-3, characterised by that there is at least one split (30) running from the free rim (13a) of one of the side-parts (13) to the inner sole (15) and/or there is at least one split (30) running from the free rim (14a) of the other side-part (14) to the inner sole (15).

5. Sport shoes as in any of claims 1-4, characterised by that the one connection piece (40) is near the one rim (31) of the split (30).

6. Sport shoes as in any of claims 1-5, characterised by that the other connection piece (50) is near the other rim (32) of the split (30).

7. Sport shoes with improved characteristics according to the invention, consisting of a toe-part and a heel-part and side-parts between the former two parts, and an upper part constructed from an inner sole connected to these parts and an outsole connected to the upper part, the toe-part, the heel-part and the side-parts of the upper part have free rims situated on the side opposite the outsole, and the group of free rims encircle an opening, characterised by that the inner sole (15) of the upper part (10) is divided into a front part (15a) and a rear part (15b), the front part (15a) is fixed to the toe-part (12), while the rear part (15b) is fixed to the heel-part (11), and the front part^' (15a) of the inner sole (15) and the rear part (15b) of the inner sole (15) are connected to the outsole (20) directly or via a fixing unit (70) so that they can move with respect to each other.

8. Sport shoes as in any of claims 1-7, characterised by that the fixing unit (70) consists of one or more fixed connection bodies (71) attached to the rear part (15b) of the inner sole (15) and a mobile connection body (72) co-operating with the fixed connection body (71), there are passage openings (21) arranged in the part of the outsole (20) underneath the rear part (15b) of the inner sole (15), near the fixed connection bodies (71), a part of each mobile connection body (72) of the fixing unit (70) is pushed through the passage opening (21) of the outsole (20) and attached to the fixed connection body (71) co-operating with it, and in this way the rear part (15b) of the inner sole (15) is temporarily and securely fixed to the outsole (20).

9. Sport shoes as in any of claims 1-8, characterised by that the fixing unit (70) comprises one or more fixed connection bodies (71) attached to the front part (15a) of the inner sole (15) and a mobile connection body (72) co-operating with the fixed connection body (71), there are passage openings (21) arranged in the part of the outsole (20) underneath the front part (15a) of the im er sole (15), near the fixed connection bodies (71), a part of each mobile connection body (72) of the fixing unit (70) is pushed through the passage opening (21) of the outsole (20) and attached to the fixed connection body (71) co-operating with it, and in this way the front part (15a) of the inner sole (15) is temporarily and securely fixed to the outsole (20).

10. Sport shoes as in claim 8 or 9, characterised by that a guiding part-unit (80) is inserted between the front part (15a) and the rear part (15b) of the inner sole (15), the front part (15a) of the imier sole (15) is provided a guiding piece (81), while the rear part (15b) of the inner sole (15) is provided with a second guiding piece (82) co-operating with the first guiding piece (81), and the first guiding piece (81) and the second guiding piece (82) are connected to each other in a way that they can slide along a straight line but they cannot turn.

11. Sport shoes as in claim 10, characterised by the first guiding piece (81) is a sleeve cut into the front part (15a) of the inner sole (15), while the second guiding piece (82) is a pin protruding from the rear part (15b) of the inner sole (15) and sliding into the sleeve.

12. Sport shoes as in claim 10, characterised by the first guiding piece (81) is a sleeve cut into the rear part (15b) of the inner sole (15), while the second guiding piece (82) is a pin protruding from the front part (15a) of the inner sole (15) and sliding into the sleeve.

13. Sport shoes as in any of claims 8-12, characterised by that at least one of the passage openings (21) is an elongated opening (22) the main axis (22a) of which is parallel to the longitudinal axis (la) of the sport shoes (1).

14. Sport shoes as in any of claims 8-13, characterised by that the fixed connection body

(71) of the fixing part-unit (71) is a threaded sleeve (71a), while its mobile connection body

(72) is a threaded pin (72a) provided with a tightening head (72b).

15. Sport shoes as in any of claims 1-7, characterised by that the fixing unit (70) comprises at least one fixed connection body (71) attached to the rear part (15b) of the inner sole (15), a supporting connection body (73) connected to the outsole (20), and a mobile connection body (72) inserted between the fixed connection body (71) and the supporting connection body (73), the front part (15a) of the inner sole (15) is securely fixed to the outsole (20), while there is a receiving opening (23) in the part of the outsole (20) situated underneath the rear part (15b) of the inner sole (15), near the fixed connection body (71), the fixed connection body (71) is inserted in the receiving opening (23) in a sliding way, and in this way the rear part (15a) of the inner sole (15) is connected to the outsole (20) so that it can slide with respect to the outsole (20).

16. Sport shoes as in any of claims 1-7, characterised by that the fixing unit (70) comprises at least one fixed connection body (71) attached to the front part (15a) of the inner sole (15), a supporting connection body (73) connected to the outsole (20) and a mobile connection body (72) inserted between the fixed connection body (71) and the supporting connection body (73), the rear part (15b) of the inner sole (15) is securely fixed to the outsole (20), there is a receiving opening (23) in the part of the outsole (20) situated underneath the front part (15a) of the inner sole (15), near the fixed connection body (71), the fixed connection body (71) is inserted in the receiving opening (23) in a sliding way, and in this way the front part (15a) of the inner sole (15) is connected to the outsole (20) so that it can slide with respect to the outsole (20).

17. Sport shoes as in any of claims 1-7, characterised by that the outsole (20) is divided into a front part (20a) and a rear part (20b), the front part (20a) is securely fixed to the front part (15a) of the imier sole (15) of the upper part (10), while the rear part (20b) of the outsole (20) is securely fixed to the rear part (15b) of the inner sole (15) of the upper part (10), the fixing part-unit (70) is inserted between the front part (20a) of the outsole (20) and the rear part (20b) of the outsole (20), and a guiding part-unit (80) is placed between the front part (20a) and the rear part (20b) of the outsole (20) and/or the front part (15a) and the rear part (15b) of the inner sole (15).

18. Sport shoes as in claim 17, characterised by that the fixing part-unit (70) comprises a fixed connection body (71), a supporting connection body (73) and a mobile connection body (72) inserted between the fixed connection body (71) and the supporting connection body (73), either the fixed connection body (71) or the supporting connection body (73) is situated on the front part (20a) of the outsole (20), while the other, either the fixed connection body (71) or the supporting connection body (73), is situated on the rear part (20b) of the outsole (20), and via the mobile connection body (72) the front part (20a) of the outsole (20) is connected to the rear part (20b) of the outsole (20) in a movable way.

19. Sport shoes as in claim 17 or 18, characterised by that the guiding part-unit (80) is formed by the first guiding piece (81) of the front part (15a) of the inner sole (15) and the second guiding piece (82) of the rear part (15b) of the inner sole (15) co-operating with the first guiding piece (81), and the first guiding piece 81 and the second guiding piece (82) are connected to each other in a way that they can slide along a straight line but they cannot turn.

20. Sport shoes as in claim 19, characterised by that the first guiding piece (81) is a sleeve cut into the front part (15a) of the inner sole (15), while the second guiding piece (82) is a pin protruding from the rear part (15b) of the inner sole (15) and sliding into the sleeve.

21. Sport shoes as in claim 19, characterised by that the first guiding piece (81) is a sleeve cut into the rear part (15b) of the inner sole (15), while the second guiding piece (82) is a pin protruding from the front part (15a) of the inner sole (15) and sliding into the sleeve.

22. Sport shoes as in any of claims 17-21, characterised by that the guiding part-unit (80) is formed by the first guiding piece (81) of the front part (20a) of the outsole (20) and the second guiding piece (82) of the rear part (20b) of the outsole (20) co-operating with the first guiding piece (81), and the first guiding piece (81) and the second guiding piece (82) are connected to each other in a way that they can slide along a straight line but they cannot turn.

23. Sport shoes as in claim 22, characterised by that the first guiding piece (81) is a sleeve cut into the front part (20a) of the outsole (20), while the second guiding piece (82) is a pin protruding from the rear part (20b) of the outsole (20) and sliding into the sleeve.

24. Sport shoes as in claim 22, characterised by that the first guiding piece (81) is a sleeve cut into the rear part (20b) of the outsole (20), while the second guiding piece (82) is a pin protruding from the front part (20a) of the outsole (20) and sliding into the sleeve.