DE1655245A1 - Vehicle seat - Google Patents

Description

Dipl.-in «. Augsburg, February 12, 197O

Κίί </ ο // Bussehneier new version;

rcmlsthrtkkiinto: Munich No. 74939

5024/04 Th / Sch

PATENT APPLICATION

Storey Brothers and Company Limited, White Cross, Lancaster, Lancashire, UK

Vehicle seat

The invention relates to a vehicle seat with a cover made of synthetic, plastic film material over an elastic filling, which is carried by or on a rigid frame or base frame wherein the sheet-like material of the cover has a number of small through openings or pores possesses, of which at least some are in connection with one or more pumping elements, the pumping elements can be actuated by the vibrations and similar movements of a person sitting on the seat.

Modern motor vehicle seats are generally manufactured by covering an elastic filling which comprises springs such as, for example, coil springs and / or elastic foam or foam rubber material with a covering of synthetic thermoplastic material such as, for example, polyvinyl chloride. This cover can be formed by joining together, for example by sewing together a large number of flat and / or uniform pieces of polyvinyl chloride film (sheets); the entire reference

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but can also be made in one piece (shaped), like it for example in British Patent Specification No. 1,023 described by the applicant, or the cover may be made from a single piece of thermoplastic material according to a vacuum forming process (vacuum drawing or Deep drawing process).

One advantage of using synthetic material for the cover instead of the usual leather is that that the synthetic material is relatively cheap. You can use it to a very large extent with careful processing imitate natural leather; However, the problem with this is always that the synthetic material is moisture and is impermeable to air and thus sjdi is different (different as leather) and can easily be distinguished from natural (real) leather by a person sitting on it can.

This difficulty can largely be overcome by making a large number of small openings or by making pores in the synthetic material, and also by deeply embossing its surface (strong grain). These auxiliary measures also allow a certain ventilation of the surface where it * is in contact with the human body.

However, these proposed solutions do not cope with the problem mentioned, which still remains acute when Seats with such covers are used in tropical areas; solving this particular problem is that Object of the invention.

According to the invention, a motor vehicle seat is provided which comprises an elastic filling (core) covered with a cover (fabric) made of synthetic, thermoplastic material, the thermoplastic material having a large number of small through openings

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Th / Sch '- 3 - February 12, 1970

or pores, wherein (in the seat) pumping means are provided, which by vibrations and the like Movements while driving the vehicle and / or through body movements such as stretching the on the Seated person are operated and cause a supply or supply of air, the air through at least some of the pores or the like. Is ejected or blown through.

This ventilation keeps the cover cool and removes or even prevents condensation Formation of condensation which would otherwise remain on the surface of the cover; it has showed that such seats come closer to real leather seats than those which do not have this ventilation.

/ are a number of small bellows / in the base body

or core of the seat enclosed, these bellows inlet openings on the underside of the seat and Outlet openings which are connected to one or more pores or openings in the seat or the cover are, have, each bellows when it is compressed by vibrations of the vehicle or cause pumping by body movements of the person sitting on the seat.

Preferably the pumping volume, i.e. the volume of the bellows, is relatively small, so that changes in volume lead to relatively large pressure changes.

In the drawing, an embodiment of the seat according to the invention is shown schematically. Show it:

1 shows a cross section through a seat, Fig. 2 is an enlarged, shown in perspective,

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cut-out section of the seat according to FIG. 1,

3 shows a section through one of the bellows provided in the seat.

The vehicle seat 10 comprises a seat part or a seat surface 12 and a backrest l4. Seat and Backrests have covers 16 or 18 made of synthetic, thermoplastic material such as polyvinyl chloride.

The covers 16 and 18 surround rigid (not shown) Frame parts on which elastic filling material 20 is applied. So far, the seat 10 resembles a conventional one Seat.

In parts 22 of the seat and 24 of the backrest, which are in close contact with the body of a person sitting on the seat, a number of small cylindrical bellows are incorporated. Every bellows has one Outlet which is connected to one or more of the openings 58 located in relation.

Each bellows 56 comprises one of thin, flexible, plastic material existing bellows or hose 60, which at its ends, for example by welding with the circular end plates 62 and 64 is connected. Of the Bellows 60 contains a coil spring 66. The upper and the lower end plate 62 and 64 have through openings 68 and 70, and lower end plate 64 has a one-way flap valve 72 over opening 70, this valve consists of a small piece of flexible, resilient material, of which a small part is attached to the plate 64, for example glued, so that the valve 72 can be lifted by the air when air is drawn into the interior of the bellows, and which 72 in the rest

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Time flat against the end plate 64.

During the journey, the bellows 56 are through the normal movement of the person on the seat who is taking part in the vibrations of the vehicle, either pressed apart or pressed together. This causes air to enter the hose or bellows 60 through either or both Openings 68 and 70 inserted when the bellows expands; and there is air under pressure through the opening 68 ejected "but not through the opening 70, there the flap valve 72 closes when the bellows are compressed. As a result, air gets through the pores 58 expelled.

The bellows can be distributed over the entire seat surface, or they can be concentrated individually in the areas 22 and 2k. It can also be provided that the bellows pump air through one or more pores

The effect of the ventilation by means of such bellows is achieved through the use of a cover 16, the material of which is deeply embossed or grained, is still advantageously supported.

Of course, air does not have to be expelled through every pore of the covers 16 and 18; some pores can too only represent perforations of the cover. Preferably, perforations, not all of which are connected to bellows 56, are all over the surface of the cover distributed. For example, a perforation

2 2

density from one hole per 7 cm to 25 holes per 7 cm provided, wherein the diameter of the holes can vary from 1/10 mm to 2.5 mm.

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Claims (2)

ZtR OfF £ *! SOLUTION DESTIMMT I 1655245 Augsburg, February 12, 1970 New version: Claims 1 * vehicle seat with a cover made of synthetic, plastic film material over an elastic filling, which from or · on a rigid frame or base frame, the sheet-like material of the cover being a number smaller has through openings or pores, of which at least some are in connection with one or more pump elements, the pump elements through the vibrations and similar movements of a person on the seat can be actuated, characterized in that the pumping elements consist of several bellows (56) which are arranged within the elastic filling (20), the outlet openings (68) of the bellows (56) with one or more openings (58) of the reference (l6, l8) are related, where the » Ye rändungen des < movement of the PersoriyVolumens on the seat of the bellows (56) causes the air through the perforations connected to the bellows is pumped. 2. The vehicle seat according to claim 1, characterized in that each bellows (56) has one flexible bellows or hose (60) which are held in their shape by a helical spring (66) are «with the helical spring (66) between am Π (ΛΠ. 7 % \ Abx 2 Hr. 1 Sti :: t da .; ArKluruntj ^ rj- »;. v. 4. 9. U) J) Jl - 2 - 109830/0428 Th / Sch - «* .- February 12, 1970 Bellows attached end plates (62,6Ό engages, wherein each end plate has an opening (68,70) whose • in · al * inlet is formed and a valve (72) has, and the other is designed as an outlet and with one or more pores (58) of the cover (16,18). Vehicle seat according to Claim 1, characterized in that the valve (72) of the bellows (56) has a flap which is hinged to the end plate (64) so that it can be raised to to allow the air to enter the bellows and which then again assumes a position in which it is the inlet opening (70) closes. 109830/0428