DE102005017773A1 - Ventilation system for car seat, comprising perforated tube accommodated inside duct - Google Patents

Abstract

The seat area and/or the backrest (10) of the car seat are fitted with at least of one layer of foam rubber (12) at the front (22) covered by at least one layer of textile material. The foam rubber (12) is provided with a groove (16) designed in a triangular shape, wider at the top and with a duct leading to a supply device dispensing fresh and cool air. A perforated tube is accommodated inside the groove (16) in order to release the cool air through the textile cover.

Description

The The invention relates to a vehicle seat with in the preamble of Claims 1 and 5 mentioned features.

Basically known that the interior of a motor vehicle depending on the ambient temperature either higher or lower temperatures than the body temperature of an occupant having. Of course, the ambient temperature also has an effect on the arranged in the interior of vehicle seats.

in the If the temperature is high, the occupant may become uncomfortable feel, because the heat stored in the seat between the body of the occupant and the seat is included. Also after, for example an air conditioning system of the vehicle has cooled the vehicle interior, the heat trapped between the seat and the occupant is only difficult to dissipate, so that, for example, to sweat the occupant at least in the forming contact area comes.

at cooler Temperatures below body temperature felt by the inmate the seat user a rather uncomfortable cold feeling. Even after the vehicle interior has been heated, the body of the Inmates a significant amount of heat lose and feel possibly uncomfortable until this amount of heat can be replaced.

In conclusion From this, vehicle seats have been provided which provide airflow through the seat cushion structure to heat the seat or to cool and provide a flow of air that occupies the seat Inmates achieved, first, a moisture between the occupant and to reduce the seat and / or secondly supply heat accordingly or dissipate.

A solution describes the EP 0 424 160 within which a selective cooled or heated seat and backrest construction is described. This seat construction has an airflow duct assembly having a duct connected to the seat, the seat and backrest forming a single communicating airspace through which pressurized conditioned air enters from the duct, flows through the backrest, and finally the backrest Leaving exit points. Both the seat and the backrest are covered with an air-permeable fabric layer or bag-like layer of an elastomeric web having a number of openings so that conditioned air can pass through the layer. However, this arrangement for the air conditioning of a vehicle seat is relatively expensive to produce.

Another solution is from the DE 197 05 223 The seat cushion is formed of open-cell foam and has an upper surface and a lower surface, and in the seat cushion, a plurality of air passages extending substantially from the lower surface to the upper surface are arranged To direct air to the upper surface of the seat cushion. The disadvantage here is, in addition to the likewise elaborate production that over the entire thickness of the seat cushion arranged air ducts adversely affect the stability of the seat cushion.

From the DE 103 26 446 Furthermore, a device for air conditioning a vehicle seat with a cushion core for supporting a passenger, the upper air distribution device on the passenger facing front of the cushion core and a lower air distribution device on its rear side facing away from the passenger, with a connecting device for passing air between the first and the second air distribution device. At least one of the facilities provided is provided with an elongate cavity, in the air-guiding cross section at least one support element is provided. Also, this structure is relatively complicated to realize the air conditioning of a vehicle seat.

Of the Invention is based on the known prior art, based on the object, in a vehicle seat of the aforementioned To simplify the air conditioning, especially the seat ventilation, and to be effective.

Thereby, that for the air conditioning of the vehicle seat at least on the User facing side of a least one-layer pad body at least an open, channel-like cavity is formed, in which at least one to the feeder a gaseous one Fluid suitable perforated element is arranged in one first embodiment a simple and effective ventilation of the vehicle seat allows.

Further, characterized in that at least one channel-like cavity is formed in the at least one layer of air-permeable cover material in which at least one suitable for supplying a gaseous fluid perforated element for air conditioning of the vehicle seat, the object by a second embodiment ge solves.

In preferred embodiment of the invention applies to both embodiments, that the gaseous Fluid in an air conditionable air is.

The Restricted invention not on the conditioning of the temperature, but all conceivable applications in an air-conditioner with regard to the treatment of gaseous Fluids are conceivable. The gaseous Fluid from the air conditioner is, according to the first embodiment, the respective perforated element in the at least one layer Supplied padding body.

By the open, channel-like cavities optionally the contact surface the user in the seat part or in the backrest part uneven, so that if necessary, a compensation to produce a flat contact surface of the User becomes necessary.

To consists in a first alternative of the first embodiment the possibility, the at least single-layer, air-permeable cover material on the the upholstery body facing side with different thickness to hide, so that essentially in the region of the open, channel-like cavities a more Lamination of the cover material is present, so that bumps at the outer contact surface of the User are no longer detectable.

In A second alternative of the first embodiment is proposed the cover material unchanged to conceal in the same thickness, but over the entire surface or along the at least a channel-like cavity covers in the form of cover strips or cover sheets with air-permeable To arrange properties or the like.

Of the at least single-layer padding body is in a preferred embodiment of the invention, a foam or the like, in which the perforated element is arranged in the user-facing upper layer.

Around to ensure air conditioning of the vehicle seat is, according to the second embodiment at least one cavity arranged directly in the air-permeable cover material. Of course the reference material in this case, only on the to the user-facing side to be permeable to air. The cover material can be multi-layered and the arranged cavities may be over a layer or over several Layers of cover material extend.

The further preferred embodiment details apply to both the first as well as for the second embodiment.

The arranged in the open, channel-like cavity perforated Elements are in a preferred embodiment of the respective cross section of cavities customized.

Finally aims the invention insists that several perforated elements become one Art drainage system are removable, which in necessary places in particular when changing direction the perforated elements over Coupling elements are connectable.

The supplied to the drainage system Air can, as mentioned above, be removed from an air conditioner. A self-supply independent of one Air conditioning by separate air generators with sufficient Output pressure to overcome the corresponding pressure losses is in a further embodiment of Invention also for both embodiments applicable.

Further preferred embodiments of the invention will become apparent from the others, in the subclaims mentioned features.

The Invention will be hereinafter with reference to the first embodiment based on the accompanying drawings explained. The second embodiment will explained without figures. Show it:

1 a view of a pad base body without reference material (first embodiment) and

2 a detail view (first embodiment) of a running in a flat cross-section hose member as a perforated member in an open, channel-like cavity according to 1 ,

1 shows an example of a seat part and a backrest part 10 existing vehicle seat, the backrest part 10 in a front view without one on the backrest 10 arranged cover material. The following explanations apply to the first embodiment, in which the cavities are arranged in the upholstery body.

Further the entire statements do not apply mutatis mutandis illustrated seat part.

This in 1 shown backrest part 10 is made of a foam, wherein the embodiment, the front view of an example single-layer upholstered body 12 with open, channel-like cavities 16 shows. The open, channel-like cavities 16 but can also over several layers of the upholstery body 12 extend. The backrest 10 is with the visible user page 22 represented and the open, channel-like cavities 16 run on the one hand in the edge region of the dimensions of a possible seat occupant. On the other hand, in the central back area of a possible seat occupant are substantially vertically extending, open, channel-like cavities 16 arranged, which are arranged almost diagonally outwardly extending from this central contact surface or from this central contact point of the seat occupant.

1 shows, for example, a possible access for the at least one perforated element 14 placed in the middle of the lower edge of the backrest 10 is arranged. From there, for example, the distribution of the gaseous medium takes place on all with the perforated element 14 provided areas.

In the embodiment according to 2 is exemplary of the perforated element 14 a tubing having a particularly flat cross-section and perforations present in the tubing 18 shown. Using such a flat cross-section advantageously only flat, open, channel-like cavities 16 train. The formation of open, channel-like cavities 16 depends on the cross section of the tubing used. The individually formable hose elements from the hose material are, according to 1 , via coupling elements 20 , which also have a similar or the same cross section of the hose elements connectable. This possibility of connecting the hose elements via coupling elements 20 , Especially at changing directions, the ventilation system in the vehicle seat in the seat part and / or in the backrest part 10 as a complete drainage system with different designs ausgestaltbar.

As cross sections for the perforated elements 14 , In particular, the hose elements, come in exemplary list rectangular, cylindrical, for example, triangular cross-sections or the like in question.

Finally, be mentioned, that in this first embodiment several variants to avoid noticeable bumps of the vehicle seat user can be applied.

The first option is the option according to 1 in the area of the open, channel-like cavities 16 Cover strips or flat cover elements (not shown) with air-permeable properties apply, so that the vehicle seat user perceived via the air-permeable cover material no bumps of the pad body with internal ventilation system.

As a second variant, there is the possibility, since the cover material is mostly made of several layers, the inner lining layer in different thickness, in particular in the region of the open, channel-like cavities 16 thicker, so that even unevenness can be compensated by the single-layer air-permeable cover material.

Ultimately, this is at least one perforated element 14 suitably in the open, channel-like cavities 16 fixable. In this case, all fastening methods that provide sufficient support, especially in the vertical region of the backrest, applicable.

The second embodiment is not shown in the figures.

Around to ensure air conditioning of the vehicle seat is, according to the second embodiment at least one cavity arranged directly in the air-permeable cover material. Of course In this case, the cover material only needs to be on the user side facing side permeable to air be. The cover material may be multilayered and arranged cavities can over a layer or over extend several layers of the cover material.

The cavities or the internal perforated elements in the cover material either stiffened and padded accordingly, so when sitting up a person no closures within the perforated element are expected and the comfort for the User is not degraded. There is also the possibility of perforated Use elements whose stability is inherently sufficient to to ensure a safe flow of the gaseous medium (air).

For the second embodiment also applies that an analogous arrangement of the perforated elements in the cover material with, for example, an access at the lower edge the backrest or for example, at the trailing edge of the seat part (not shown) executable is.

Also in terms of usable cross-sections and adaptation of the perforated Elements (hoses) in the cavities apply to the second embodiment and their arrangement in the reference material, the embodiments of the first embodiment.

Finally, of course, there is the possibility both in the air-permeable cover material and in the foam of the upholstered body 12 corresponding cavities 16 to arrange as described. In this case, of course, the air-permeable cover material must be permeable to air at least at the locations on both sides where perforated elements in open, channel-like cavities are formed in the upholstery base body.

10

Backrest part

12

Upholstery base (foam)

14

perforated Element (hose)

16

cavity (Channel)

18

perforation

20

coupling elements

22

user page

Claims (9)

Vehicle seat, in particular motor vehicle seat, with a seat part and a backrest part ( 10 ), each having a at least one-layer pad body ( 12 ) and an at least single-layer air-permeable cover material, characterized in that for the air conditioning of the vehicle seat at least on the user-facing side ( 22 ) of the at least single-layer padding body ( 12 ) at least one open, channel-like cavity ( 16 ) is formed, in which at least one suitable for supplying a gaseous fluid perforated element ( 14 ) is arranged. Vehicle seat according to claim 1, characterized in that the at least one-layer air-permeable covering material is laminated on the side facing the padding body body with different thickness, so that through the open, channel-like cavity ( 16 ) with the inner perforated element ( 14 ) resulting unevenness on the contact surface of the user are compensated. Vehicle seat according to claim 1, characterized in that between the at least one open, channel-like cavity ( 16 ) with the at least one internal perforated element ( 14 ) and the at least one-layer air-permeable cover material air-permeable covers over the entire surface or along the at least one open, channel-like cavity can be arranged. Vehicle seat according to claim 1, characterized in that the at least one-layer padding body ( 12 ) is a foam or the like. Vehicle seat, in particular motor vehicle seat, with a seat part and a backrest part ( 10 ), each having a at least one-layer pad body ( 12 ) and an at least single-layer air-permeable cover material, characterized in that for the air-conditioning of the vehicle seat in the at least one-layer air-permeable cover material at least one channel-like cavity ( 16 ) is formed, in which at least one suitable for supplying a gaseous fluid perforated element ( 14 ) is arranged. Vehicle seat according to claim 1 or 5, characterized in that the gaseous fluid can be conditioned in an air conditioning system and the respective perforated element ( 14 ) of the at least single-layer padding body ( 12 ) can be fed. Vehicle seat according to claim 1 or 5, characterized in that the perforated element ( 14 ) a hose material with a to the at least one channel-like cavity ( 16 ) is adapted cross section. Vehicle seat according to claim 1 or 5, characterized in that a plurality of perforated elements ( 14 ) are removable to a drainage system. Vehicle seat according to claim 8, characterized in that at least two perforated elements ( 14 ) each via a coupling element ( 20 ) are connectable.