DE102005006060A1 - Vehicle seat and padding for this - Google Patents

Abstract

The present invention relates to a vehicle seat or upholstery for such a vehicle seat, consisting of a composite of layers with at least one air-guiding layer, wherein in the region of the air-guiding layer an outlet opening is provided, which is arranged so that the outflow of warm and moist air automatic subsequent flow of dry and cool ambient air in the air-bearing layer causes.

Description

The The invention relates to a vehicle seat and a pad for a such vehicle seat.

at the materials used today for seat cushions for vehicle seats is often higher in particular Air temperature and humidity sufficient ventilation the contact surfaces of the seat on which the body parts of the vehicle occupant, not always adequately ensured, with the result of a moisture congestion on these contact surfaces, causing the Seating comfort significantly affected.

So for example Seat pad cold foams made of polyurethane, with the help of which appropriate Moldings for make the seat cushion train. Made of foam However, molded parts have the disadvantage that they have little breathable are but have a low weight.

A another possibility is a mixture of natural fibers, such as coconut fibers, Animal hair and the like with a binder, especially latex, to provide and to form a cushion part, what among the general Term "rubber hair" is known. In spite of of the higher one Weight of such rubber rubber upholstery parts have this high Air permeability and are excellently suited for targeted air conditioning a vehicle seat made of such upholstery parts.

Out The prior art, several proposals are known pad for vehicle seats to ventilate and to air-condition, if necessary, an increased humidity, which of the vehicle occupants inevitably is generated, dissipate.

For example, from the German Utility Model DE 200 02 447 U1 a seat cushion for vehicle seats is known in which the core part made of a plastic foam is passed through with several recesses. These depressions serve primarily to adapt to certain anatomy seat and can only partially allow air circulation, since the exchange of air can take place only through an arranged above this core part air-permeable pad. Optionally, this air-permeable support communicates with a channel in which a fan is arranged.

From the German patent application DE 102 43 315 A1 is also a pad for a vehicle seat known, which has a cushion core, which is traversed by a channel system. The channel system is formed of horizontal, mutually rectangularly arranged sub-channels and from these vertically extending into the core further channels. The ventilation is generated by means of a fan, which introduces air through these vertical channels in the cushion core, which then flows out and through further vertical channels.

Vertical channels are for example also from the German patent DE 37 22 814 C2 known, which serve only for ventilation.

Next The possibility, the seat ventilation and thus the moisture removal, for example by means of fan devices, to accomplish, is beyond the state of the art beyond known to provide an activated carbon insert within the seat assemblies, which can absorb the moisture. Such activated carbon deposit However, it suffers from the considerable disadvantage that the vehicle occupants originating sweat moisture is stored downright, so that the Effect of such deposits decreases significantly over time, with in certain circumstances even an odor can be the result.

active Seat ventilation devices are disadvantageous in that the construction of these containing upholstery or vehicle seats designed as consuming and expensive. About that addition, the additional Aggregates used for such ventilation are to be provided with an increased weight and an elevated one Space requirements connected.

outgoing It is the object of the present invention, pad for a Vehicle seat and provide a vehicle seat, in which means simple means a cost-effective Moisture removal can be accomplished.

Is solved this object with a cushion with the features of the claim 1, and with a seat cushion according to claim 7, a backrest according to Claim 8 and a vehicle seat according to claim 9.

Of the Essentially, the essence of the invention is that an outlet opening in relation to a air-leading Layer inside a cushion, which is in a vehicle seat can be used both as a seat cushion and as a backrest, is arranged so that the outflow of warm and humid Air an automatic after-flow from drier and cooler Ambient air in the air-leading Layer causes.

in this connection makes the embodiment of the invention take advantage of the known from thermodynamics or thermal "chimney effect" in which by the outflow of warm, humid air in a duct system due to the suction effect cooler and thus drier air from the environment flows into the duct system. hereby can the partial pressure of water vapor, or the diffusion gradient the water vapor inside the pad can be increased significantly.

For this is enough already a temperature gradient between a temperature of about 35 ° C, which usually at the contact surface between the occupant and the cushion prevails, and an ambient temperature from about 24 ° C to achieve this effect, which is almost complete drainage the sweat moisture through the seat allows.

The inventive cushion consists of a composite of several layers, namely one Foam core, the air-leading Layer and a covering this Reference. In this case, different arrangements of the individual layers are possible.

In an embodiment is the air-leading Layer disposed between the cover and the foam core while in another embodiment the foam core is disposed between the cover and the air-guiding layer is.

Of the Foam core can be traversed by horizontal and / or vertical channels so, depending on the embodiment either cool and dry air or warm and humid air through this duct system can be directed.

Around corresponding warm and moist air at the contact surfaces too to be able to record the vehicle occupant, the reference is from a air-permeable and hydrophilic nonwoven lamination.

According to the invention exists the air-leading Layer either of a spacer fabric, a reticulated Foam or rubber hair.

One according to the preceding embodiments built-up pad can be used both for a seat cushion and for a backrest a vehicle seat can be used.

in the Case of a backrest is the exit opening the pad on the viewed in the direction of travel rear side the backrest and arranged in the upper end region of the pad. Furthermore is according to the invention at least one entrance opening provided, which also opens to the back and through which the cool and dry air is sucked in. The outlet opening is in the range the backrest in the largest possible Distance to the entrance opening intended.

At the Seat cushion is the exit opening at the rear end, preferably the air-leading Layer. Optionally, here is also an entrance opening in maximum Distance to the exit opening arranged, which at the front or the bottom of the seat cushion can be provided.

It becomes clear that through simple constructive measures and a corresponding layer structure according to the invention an effective discharge of warm and humid air for Such upholstery and vehicle seats can be accomplished.

The Invention will now be described with reference to the accompanying drawings embodiments be explained in more detail.

there demonstrate:

1 schematically in cross-sectional representation a first embodiment according to the invention;

2 schematically in cross-sectional representation a second embodiment according to the invention; and

3 schematically in cross-sectional representation of a third embodiment according to the invention.

In 1 a first embodiment of a vehicle seat according to the invention is shown.

The vehicle seat consists of a seat cushion 1 and from a backrest 2 ,

The seat cushion 1 and also the backrest 2 consist essentially of the same layer structure according to the invention.

This layer structure is composed of an upper cover 3 consisting of a fleece lamination, a foam core arranged underneath 4 with vertical air and moisture channels 5 and an air-guiding layer disposed below it 6 from a rubber effect.

The composite of the layers 3 . 4 and 6 is on a spring core 7 for the seat cushion 1 angeord net. The reference 3 is air and moisture permeable, allowing warm and moist air through the channels 5 in the foam core 4 into the rubber effect 6 can be initiated. At the rear end of the seat cushion or cushion 1 there is an exit opening 8th in the field of rubber processing 6 through which the warm and moist air can flow.

By the outflow of warm and moist air through this outlet opening 8th Dry and cool air from the environment gets into the rubber effect 6 sucked, which for this purpose an air-permeable surface to the spring core 7 towards.

The same principle applies to the backrest 2 realized.

The backrest 2 also consists of an air- and moisture-permeable cover 9 which has a foam core 10 with channels provided substantially horizontally therein 11 is arranged. Seen in the direction of travel behind the foam core 10 is an air-bearing layer 12 as provided, for example rubber effect, which is located on a spring core 13 supported. At the upper end of the backrest 2 there is an exit opening 14 , At the greatest possible distance from this exit opening 14 is an entrance opening 15 in the lower part of the backrest 2 intended. The openings 14 and 15 open in the back clamping part of the backrest 2 , By the inflow of warm and moist air over the cover 9 and the channels 11 into the rubber effect 12 gets dry and cool supply air through the entrance opening 15 sucked from below.

In the 2 a second embodiment of a vehicle seat is shown, in which immediately below a reference 16 the air-guiding layer 17 is arranged from a Gummigewirk. Below is a foam core 18 provided, wherein in the foam core 18 at least one entrance opening 19 is provided, which for sucking dry and cool air supply preferably in the front region of the seat cushion 1 is arranged and opens down. Optionally, a corresponding opening in the region of the seat cushion shell or of the spring core is provided.

The backrest 2 is analogous to a reference 20 , an air-bearing layer 21 and a foam core 22 built up. On the back there is an exit opening 23 and an entrance opening 24 provided at such a distance from each other, which is sufficient to produce the "chimney effect".

A third embodiment of the vehicle seat according to the invention, or the pad according to the invention is in the 3 shown. The structure corresponds essentially to the embodiment according to 2 , but with the difference that the foam core 18 of the seat cushion 2 with several vertical channels 25 and at least one horizontal channel 26 is interspersed.

Due to the suction due to the outflow of moist and warm exhaust air through the outlet opening 8th in the back end of the seat cushion 1 gets dry and cool supply air from the bottom of the innerspring 7 , or the cushion bowl, through the vertical channels 25 the foam core 18 sucked in and mixes with the through the rubber effect 17 incoming warm and moist air in the horizontal channel 26 before the mixed air through the exit port 14 can escape.

In the area of the backrest 2 the flow conditions are similar, being over the inlet opening 24 the dry and cool supply air to the horizontal channels 27 and then subsequently the at least one, substantially vertically extending channel 28 is supplied before moist and warm exhaust air through the outlet opening 23 can escape.

1

/ Cushion seat cushion

2

backrest

3

reference seat cushion

4

foam core seat cushion

5

Channels in the foam core

6

Air-conducting layer / rubber effect seat cushion

7

Sprung / cushion shell

8th

output port

9

reference backrest

10

foam core backrest

11

Channels in the foam core

12

Air-conducting layer / rubber effect backrest

13

innerspring

14

output port

15

entrance opening

16

reference seat cushion

17

Air-guiding layer seat cushion

18

foam core seat cushion

19

entrance opening

20

reference backrest

21

Air-guiding layer backrest

22

foam core backrest

23

output port

24

entrance opening

25

vertical Channel seat cushion

26

horizontal channels seat cushion

27

horizontal channels backrest

28

vertical Channel backrest

Claims (9)

Upholstery for a vehicle seat comprising a composite of layers with a reference ( 3 . 9 . 16 . 20 ), a foam core ( 4 . 10 . 18 . 22 ) and an air-guiding layer ( 6 . 12 . 17 . 21 ), wherein at least one exit opening ( 8th . 14 . 23 ) is provided for discharging warm and moist air, characterized in that the outlet opening ( 8th . 14 . 23 ) opposite the air-guiding layer ( 6 . 12 . 17 . 21 ) is arranged such that the outflow of warm and moist air, an automatic flow of dry and cool ambient air into the air-guiding layer ( 6 . 12 . 17 . 21 ) causes. Cushion according to claim 1, characterized in that the air-guiding layer ( 6 . 12 ) between the reference ( 3 . 9 ) and the foam core ( 4 . 10 ) is arranged. Cushion according to claim 1, characterized in that between the cover ( 16 . 20 ) and the air-guiding layer ( 17 . 21 ) the foam core ( 18 . 22 ) is arranged. Cushion according to one of claims 1 to 3, characterized in that the foam core ( 18 . 22 ) horizontal channels ( 26 . 27 ) and / or vertical channels ( 25 . 28 ) having. Cushion according to one of claims 1 to 4, characterized in that the cover ( 3 . 9 . 16 . 20 ) is made of a hydrophilic Vlieskaschierung. Cushion according to one of claims 1 to 5, characterized in that the air-guiding layer ( 6 . 12 . 17 . 21 ) is made of a knitted fabric, a reticulated foam or rubber hair. Seat cushion for a vehicle seat, consisting of a cushion according to claims 1 to 6, characterized in that the at least one outlet opening ( 8th ) on the viewed in the direction of travel back end of the pad in the air-guiding layer ( 6 . 17 ) is arranged. Backrest for a vehicle seat, consisting of a cushion according to claims 1 to 6, characterized in that the at least one outlet opening ( 14 . 23 ) on the seen in the direction of travel back end of the backrest ( 2 ) is arranged and at least one input opening ( 15 . 24 ) is provided in this rear end, wherein the exit opening ( 14 . 23 ) at the upper end of the pad and at the greatest possible distance from the entrance opening ( 15 . 24 ) is arranged. Vehicle seat for a motor vehicle, consisting of a seat cushion ( 1 ) according to claim 7 and a backrest ( 2 ) according to claim 8.