JPH11266960A - Sheet provided with seat surface part by surface elastic body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate giving a bottoming feeling or the like and to show excellent cushion property by disposing a cushion member being bending and displacing possible together with a surface elastic body by means of receiving the body pressure of a sitting person over the sides of a sheet frame at the rear side of the surface elastic body. SOLUTION: In the sheet frame 1, a metallic pipe frame 1a is made to be a base frame, the axial line of the frame 1a is embedded inside and the frame body 1b which takes-in the peripheral end edge of the surface elastic body 2 to the inside and supports the body 2 from the periphery by prescribed tension is formed by injection integrally with a pipe frame 1a. Then, pad members 3 which are individually foamed and molded at every side of the sheet frame 1 are formed and a jacket material 4 is continuously assembled at the respective sides of the whole frame 1 so as to enclose the members 3 from an outer side. Thus, excellent cushion property is showed without giving the bottoming feeling or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a seat having a seat portion made of a breathable planar elastic body.

[0002]

2. Description of the Related Art Conventionally, a seat for forming a seat portion from a breathable planar elastic body has already been proposed (US Pat.
013,089, 5,533,789, Tokuhyohei 8-5
No. 07935).

[0003] A seat having a seat portion made of this sheet elastic body can impart air permeability to the seat portion and can be changed in design from a normal seat. Further, it is preferable that a pad member and a spring member, etc., necessary for forming a normal seating surface portion are omitted, and furthermore, the weight can be reduced and the space elastic body is thin, so that space efficiency is good.

However, since the seat has a seat surface portion formed only of a sheet-like elastic body, when a vehicle seat, particularly a seat cushion, is constructed, the body pressure of the occupant is equivalent to the ischial bone due to vibration or the like. Concentration at a part may give a feeling of bottom contact.

[0005]

DISCLOSURE OF THE INVENTION The present invention has a seating portion made of a sheet-like elastic body which can exhibit good cushioning properties without giving a feeling of bottoming, etc., by making use of the cushioning property of the seating part by the sheet-like elastic body. The purpose is to provide a sheet.

[0006]

According to a first aspect of the present invention, in a seat having a seating portion made of a sheet-like elastic body, a substantially quadrilateral frame is used as a seat frame, and a sheet-like elastic body having air permeability is used. A cushion member having a seating surface portion made of a sheet-like elastic body which forms a seating surface portion by being stretched and installed in a frame of the frame body, and which can be deflected and displaced together with the sheet-like elastic body under the body pressure of a seater. On the back side of the sheet elastic body and between the side edges of the seat frame.

In the seat having a seating portion made of a sheet-like elastic body according to a second aspect of the present invention, the cushioning member is provided on a lower side ranging from substantially half to the rear of the seating portion.

A seat having a seating portion made of a sheet-like elastic body according to a third aspect of the present invention is configured by providing a cushion member while keeping a space between the sheet-like elastic body and the sheet-like elastic body.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the accompanying drawings, the illustrated embodiment is applied to assemble a seat cushion C in a vehicle seat as shown in FIG. The seat cushion C is a substantially quadrangular frame 1
Is a seat cushion frame, and is disposed on the lower side of the planar elastic body 2 forming the seat surface portion, the pad member 3 forming the bank portion, the skin material 4 enclosing the pad member 3, and the planar elastic body 5. And the cushion member 5 to be assembled.

As shown in FIG. 2, the seat cushion frame 1 has a metal pipe frame 1a as a base frame. The axis of the pipe frame 1a is embedded therein, and the peripheral edge of the sheet elastic body 2 is inserted therein. The frame 1b, which stretches and supports the planar elastic body 2 from the periphery with a predetermined tension, is formed by injection molding integrally with the pipe frame 1a. The frame 1b can be formed from a synthetic resin such as polyethylene terephthalate, polypropylene, and polyethylene.

The plane elastic body 2 is made of a stretchable and breathable cloth. For example, those formed by a plurality of elastomer monofilaments interwoven with a plurality of strands of fibrous yarn used for the interior fabric,
Alternatively, a woven or knitted fabric having elasticity and air permeability can be used by weaving or knitting an elastomer monofilament of 1000 to 4000 denier into a warp or a weft.

The pad member 3 is made of a cushion foam such as urethane foam, and may be formed by foaming the seat cushion frame 1 into a predetermined cross-sectional shape that turns to the front, side, or back side. This pad member 3 is formed individually for each side of the seat cushion frame 1,
Further, the whole can be formed as a continuous and integral body according to the frame shape of the seat cushion frame 1.

For the skin material 4, any of general-purpose genuine leather, synthetic leather, fabric and the like can be used. The skin material 4 can be sewn into a continuous and integral body so as to wrap the pad member 3 attached to each side of the seat cushion frame 1 from the outside in a substantially C-shaped cross section with the inside opened.

As the cushion member 5, a foam material such as urethane foam, which exhibits elasticity due to thickness compression, or a cotton cloth made of polyester fiber can be used. The cushion member 5 has a pan-shaped bracket plate 6 fixed between the sides of the pipe frame 1a and is fixed to the side of the pipe frame 1a. 2 can be provided on the lower side.

When the cushion member 5 is provided,
Since the thickness is compressed as the planar elastic body 2 is deflected and deflected, the cushioning property can be exhibited, so that a stable seating feeling without a bottom contact feeling can be obtained. Further, the planar elastic body 2
By maintaining a space G between the cushion member 5 and the cushion member 5, the amount of flexure can be appropriately adjusted as cushioning during sitting, and in a normal sitting state, the body pressure of the occupant is received by the planar elastic body 2 and a large load is applied. It is also possible to adopt a two-stage structure in which the cushion member 5 is provided at the time of sitting.

In addition to the cushion member 5 described above, a rubber-like elastic body exhibiting elasticity due to rubber expansion and contraction can be provided as the cushion member 5 'as shown in FIG. The rubber-like elastic body 5 'is provided on the lower side of the sheet-like elastic body 2 so as to be able to bend and be displaced together with the sheet-like elastic body 2 by connecting and fixing both ends to a receiving piece 7 protruding from the pipe frame 1a. Can be. Even when the rubber-like elastic body 5 'is provided, it is preferable to keep the space G, and the elasticity without the bottom contact feeling can be exerted by exhibiting a cushioning property by expanding and contracting the rubber as the planar elastic body 2 bends and deviates. A rich seating feeling can be obtained.

In the case of a seat cushion, as shown in FIG. 4, the cushion member 5 may be provided so as to be closer to the rear from a substantially middle side of the seat surface where the body pressure of the occupant is concentrated. In this case, the body pressure of the occupant acting more intensively than the ischial portion can be stably received together with the sheet elastic body 2 to bend and be deflected. The air conditioning on the floor side can be circulated from the seating surface of the planar elastic body 2 by being formed of the body 2.

In order to assemble the seat cushion C from the respective members, in addition to the above-described structure, a plurality of holes 8a, 8b... A resin plate 8 made of polypropylene, polyethylene, or the like, provided at one end is sewn to one end. Also, the frame 1b
May be formed to protrude toward the front side with crimping projections 9a, 9b... Which fit into the holes 8a, 8b.

Among the respective members, the sheet elastic body 2 and the cushion member 5 are connected to the seat cushion frame 1 as described above.
It can be installed and installed. The skin material 4 is formed by applying the resin plate 8 to the front side of the frame 1b to form holes 8a, 8b.
, And the projections 9a, 9b,.
One end can be fixed by crimping the protruding end side of b with ultrasonic welding, heat welding, crushing, or the like.

The other end of the skin material 4 is wrapped around the bottom of the seat cushion frame 1 and fixed with a tucker, or a resin plate 10 to be sewn to the end of the skin material 4 as shown in FIG. Can be fixedly fastened to the frame 1b by being fitted into and fixed to the receiving groove 11 provided along.
The pad member 3 can be assembled to the seat cushion frame 1 so as to be positioned inside the skin material 4 to which one end is fixed, and can be wrapped and applied by the skin material 4.

Thus, the seat cushion frame 1
And a seat surface portion having an appropriate tension is formed from the sheet elastic body 2 stretched in the frame of the seat cushion frame 1 and a seat surface portion formed from the skin material 4 wrapping the pad member 3 by the sheet elastic body 2. The seat cushion C can be easily formed by forming a bank portion having a good hold property which is raised from the surface position of the seat surface, and further enhancing the cushioning property or the seating feeling of the seat surface portion by the planar elastic body 2 with the cushion member 5. It can be assembled into a solid structure.

The seat cushion C is mounted on bracket plates 13a, 13b slidably supported by slide rails 12a, 12b as shown in FIG. 1, and the bracket plates 13a, 13b are attached to the exterior covers 14a, 14b. The front and rear positions can be adjusted in the same manner as a normal seat by covering with a cover. Also, the reclining mechanism 15 is provided on one side of the bracket plate 1 for the entire seat.
3b, it can be configured as a reclining seat.

In the above-described embodiment, the seat cushion C
However, the configuration can also be applied to a case where the seat back B is assembled from the frame 1 ′, the planar elastic body 2 ′, the pad member 3 ′, and the skin material 4 ′. In the seat back B, a cushion member (not shown) can be attached to a lower portion of the rear surface of the frame 1 'so as to maintain the air permeability on the upper side.

[0024]

As described above, according to the seat having the seating portion made of the planar elastic body according to the first aspect of the present invention, the seat can be flexed and displaced together with the planar elastic body under the body pressure of the occupant. Since the cushion member is installed between the sides of the seat frame behind the sheet elastic body, in addition to the cushioning property of the seat surface part by the sheet elastic body, good cushioning without bottoming feeling is provided by the cushion member. It can be configured to exert.

According to the seat having the seating portion made of the sheet-like elastic body according to the second aspect of the present invention, the cushion member is partially provided in accordance with the part where the body pressure is concentrated on the occupant. It is possible not only to exhibit good cushioning properties under pressure, but also to achieve a configuration in which air conditioning in the vehicle is achieved from the seating surface portion made of the planar elastic body.

According to the third aspect of the present invention, the seat having the seating surface portion made of the sheet-like elastic body has a cushion member provided with a space between the sheet-like elastic body and the cushioning property at the time of sitting. It is possible to adjust the amount of deflection appropriately, receive the body pressure of the occupant with a planar elastic body in a normal sitting state, and provide a cushion structure of a two-stage structure to provide with a cushion member when sitting with a large load it can.

[Brief description of the drawings]

FIG. 1 is a partially enlarged cross-sectional view showing each part of a seat having a seat surface portion made of a sheet-like elastic body according to the present invention in a developed state.

FIG. 2 is an enlarged sectional view showing a seat cushion of the seat of FIG. 1 from the front side.

FIG. 3 is an enlarged sectional view showing a seat cushion according to another embodiment different from the seat cushion of FIG. 2 from the front side.

FIG. 4 is a plan view showing the seat cushion of FIG. 1;

FIG. 5 is an enlarged sectional view showing the seat cushion of FIG. 1 in a developed state.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Frame 2 Planar elastic body 5,5 'Cushion member G Space between planar elastic body and cushion member

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Isao Kawashima Inventor 118-1 Ota, Takanezawa-cho, Shioya-gun, Tochigi Pref. TS Tech Co., Ltd. (72) Inventor Naohiro Takahashi 1-4-4 Chuo, Wako-shi, Saitama No. 1 Inside Honda R & D Co., Ltd. (72) Inventor Masashi Ishii 1-4-1 Chuo, Wako-shi, Saitama Pref. Inside the Honda R & D Co., Ltd. (72) Inventor 1-4 Ryo Chuo, Wako-shi, Saitama Pref. No. 1 Inside Honda R & D Co., Ltd.

Claims (3)

[Claims] 1. A substantially quadrilateral frame body is a seat frame,
A seat having a seating surface portion made of a sheet-like elastic body that forms a seating surface portion by mounting a breathable sheet-like elastic member inside the frame of the frame body. A seat having a seating portion made of a sheet-like elastic body, characterized in that a cushion member capable of flexing and displacing with the body is provided between the side edges of the seat frame behind the sheet-like elastic body. 2. The seat according to claim 1, wherein the cushion member is partially provided so as to correspond to the body pressure concentration site of the occupant. 3. The seat according to claim 1, wherein a cushion member is provided while keeping a space between the seat and the planar elastic body.