JP2002282563A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the workability for assembling the terminal of a facing material and to improve the frame strength by laying the facing material formed of a three-dimensionally structured textile fabric conforming to the curve of a seat frame, and forming the seat frame by extrusion molding followed by bending work. SOLUTION: A recessed locking groove part 22 is formed in the seat frame 21 formed of a pipe frame. A stepped part 22a is formed in the inner part of the recessed locking groove part 22. The locking piece 31a of a locking member 31 mounted on the terminal 25a of the facing material 25 is engagingly locked to the stepped part 22a in the locking groove part 22 of the seat frame 21. The facing material 25 is formed of a three-dimensionally structured textile fabric consisting of a surface foundation cloth 25 and back foundation cloth 27 of surface and back textile fabrics, and an intermediate layer 28. The locking member 31 is pressed to the locking groove part 22 by the elasticity of the terminal 25a of the facing material 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat, and more particularly to a vehicle seat having a seat frame and a skin material attached to the seat frame.

[0002]

2. Description of the Related Art Normally, a vehicle seat or the like is formed of a seat frame, a pad material placed on the seat frame, and a skin material covering the seat frame and the pad material. In recent years, in order to improve the air permeability and reduce the weight of a vehicle seat, a vehicle seat in which a net formed in a mesh shape on a seat frame is attached to the seat frame while being pulled by a predetermined tension (Japanese Patent Application Laid-Open No. H10-163873). 2000
-79840) has been proposed.

[0003] Japanese Patent Application Laid-Open No. 6-57579 discloses that
A multi-layer woven or knitted fabric comprising a bulky woven knitted fabric having a thickness of 5 mm or more, which is made up of a double-sided double-sided base fabric and a connecting yarn for connecting the double-sided double-sided base fabrics, is disclosed. In this vehicle seat, when a skin material made of a bulky three-dimensional structure woven or knitted fabric is attached to a seat frame such as a pipe frame, an end portion of the skin material is locked and attached to a hook member or the like attached to the seat frame. I have.

As shown in FIG. 7, a seat frame 4 such as a vehicle seat 1 is formed of a pipe frame.
Are fixed at a plurality of locations along the seat frame 4 by welding or the like, and a locking member provided at the end of the skin material is locked to the wire 6.

[0005]

In a conventional vehicle seat, when a skin material made of a bulky three-dimensional structure woven or knitted fabric is attached to a seat frame, a hook member or the like is exposed to the outside and the appearance is deteriorated. There was a fear. In the case of the vehicle seat 1 shown in FIG.
The wire 6 must be fixed at a plurality of locations along the wire by welding or the like, the number of welding points increases, and the appearance appearance when the skin material is covered cannot be improved.

An object of the present invention is to make it possible to stretch a skin material made of a bulky three-dimensional structure woven or knitted fabric in accordance with the curvature of a seat frame, and to form the seat frame by bending after extrusion molding, or die casting. An excellent economical vehicle seat that can be formed by using an excellent external appearance, does not require a pad material, can reduce the weight, can reduce the thickness of the seat, and can improve the assembly work efficiency. To provide.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a vehicle seat according to a first aspect of the present invention has a seat frame and a skin material attached to the seat frame. In the vehicle seat, the seat frame is formed of a pipe frame, and the skin material has a surface base cloth and a back base cloth made of a front and back woven knit, and is woven and knitted integrally with the front and back base cloths. A three-dimensional structure woven or knitted fabric having an intermediate layer having elasticity, a locking groove is integrally formed with the pipe frame,
A locking member attached to an end of the skin material is inserted and locked in the locking groove.

In the vehicle seat according to a second aspect of the present invention, the pipe frame is bent and its ends are connected to each other to form a substantially square frame, and the locking is performed over the entire circumference of the pipe frame. A groove is formed, and the locking groove is formed in a concave shape.

In the vehicle seat according to a third aspect of the present invention, an expanded step is formed inside the concave locking groove of the pipe frame, and the interval between the concave locking grooves is equal to the skin. It is characterized in that it is formed thinner than the thickness of the material, and a locking member at the end of the skin material is locked to a step inside the locking groove.

According to a fourth aspect of the present invention, in the vehicle seat, the locking groove portion includes a pair of mutually opposite locking wall portions projecting into the inside of the pipe frame. The gap is formed to be thinner than the thickness of the skin material, and a locking member at an end of the skin material is locked to one of the pair of locking walls.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a vehicle seat according to the present invention will be described in detail with reference to the drawings. Figure 1
(A), (b), (c) to FIG. 6 each show a vehicle seat according to the present invention, FIG. 1 shows each of a seat frame of a seat cushion, (a) is a plan view,
(B) is a side view, (c) is a front view, FIG. 2 shows a part of a seat cushion, (a) is a cross-sectional view of a terminal position of a skin material, and (b) is a different embodiment. FIGS. 3 and 4 are cross-sectional views at the terminal positions of the skin material according to still another embodiment, FIG. 5 is a partial cross-sectional perspective view of the skin material formed of a three-dimensional woven or knitted fabric, and FIGS. FIG. 3 is a cross-sectional view of a terminal of a skin material. In the present embodiment, the case where the present invention is applied to a seat cushion will be described. However, the present invention can be similarly applied to a seat back.

1 (a), 1 (b), 1 (c) and 2
As shown in (a) and (b), the seat cushion 12 of the vehicle seat has a substantially square frame-shaped seat frame 21 in which ends of a pipe frame are connected to each other. Note that reference numeral 21a is a connecting portion. The seat frame 21 is formed by bending after extrusion molding, or is formed by die-casting from an aluminum alloy, a magnesium alloy, or the like. The seat frame 21 is formed in a substantially circular cross section, but may be formed in a quadrangular cross section or another polygon. The seat frame 21 is fixed to a floor of a vehicle or the like by a plurality of brackets.

A locking groove 22 is integrally formed over the entire circumference of a seat frame 21 formed from the pipe frame, and the terminal 25a of the skin material 25 is locked in the locking groove 22. The locking groove 22 is formed in a concave shape extending from the outside to the inside of the seat frame 21. Although the pipe frame is formed in a hollow shape in the present embodiment, it may be solid.

The seat cushion 12 has a skin material 25 which is stretched and stretched on the seat frame 21 in the vertical and horizontal directions. As shown in FIG. 5, the skin material 25 has a surface base cloth 26 and a back base cloth 27 made of woven and knitted fabric on the front and back, and has elasticity woven and knitted integrally with the base fabrics 26 and 27 on the front and back. And an intermediate layer 28 having a three-dimensional structure.

The skin material 25 made of the three-dimensional woven or knitted fabric can be formed from synthetic resin fibers such as nylon, PP, and PE, and the elasticity and tensile strength can be obtained variously depending on the thickness of the yarn filament. The skin material 25 can be formed to a thickness of 5 mm or more. In this embodiment, the one having a thickness of 10 mm is used. The skin material 25 made of the three-dimensional woven or knitted fabric can be manufactured by a double Russell knitting machine or the like. For a more detailed configuration of the three-dimensional woven or knitted fabric, the technique of Japanese Patent Application Laid-Open No. 6-57579 shown in the related art is used.

The skin material 25 made of the three-dimensional structure woven or knitted fabric is pulled up and down and left and right, and
1 is terminal-processed. As shown in FIG. 6, a locking member 31 in which a locking piece 31a is formed on the front surface side of the end 25a of the skin material 25 is fixed by sewing or the like.
Note that the shape of the locking member 31 is not limited to the illustrated one, and it may be provided on the front and back of the terminal 25 a of the skin material 25.

As shown in FIGS. 2 (a) and 2 (b), a locking member 31 fixed to an end portion 25a of the skin material 25 made of the three-dimensional woven or knitted fabric extends along the longitudinal direction of the seat frame 21. The upper portion of the seat frame 21 is inserted and locked in a concave locking groove portion 22 formed over the entire circumference in a state where the upper portion of the seat frame 21 is covered with a skin material 25.

In the embodiment shown in FIGS. 2 (a) and 2 (b), a step 22 which is expanded at a lower portion inside a concave locking groove 22 is shown.
a is formed, and the locking member 31 at the end 25 a of the skin material 25 is locked to the step 22 a inside the concave locking groove 22. In the embodiment shown in FIG. 2B, a seat frame 21 formed from a hollow pipe frame is used.
A reinforcing rib 22b is formed inside the seat frame 21 from the bottom of the concave locking groove 22 to the inside of the seat frame 21.

As shown in FIG. 3, a concave locking groove 2 is provided.
The second step portion 22a can be formed on the upper portion. In this case, the locking member 31 is fixed to the back surface side of the terminal 25a of the skin material 25 by sewing or the like. Further, a pressing member 33 for pressing the terminal 25a of the skin material 25 can be inserted into the concave locking groove 22 in accordance with the thickness of the terminal 25a of the skin material 25. Since the terminal 25a of the skin material 25 is inserted and locked into the concave locking groove 22, the terminal 25a is not exposed to the outside, so that the appearance can be improved.

FIG. 4 shows another embodiment of the present invention, in which a pair of mutually opposing locking walls projecting into the interior of a seat frame 21 composed of a hollow pipe frame. The locking piece 31 a of the locking member 31 at the end 25 a of the skin material 25 is locked to one of the ends of the pair of locking walls 23. Also in this embodiment, the end 25a of the skin material 25 is not exposed to the outside, and the appearance can be improved.

[0021]

The above is the embodiment of the vehicle seat according to the present invention. According to the vehicle seat according to the first aspect of the present invention, the seat frame is formed from a pipe frame, and the skin material is formed. Is formed of a three-dimensional structure woven or knitted fabric having a front and back woven and knitted fabric and a resilient intermediate layer integrally woven with the front and back woven fabrics, and the pipe The locking groove is formed integrally with the frame, and the locking member attached to the terminal of the skin material is inserted and locked in the locking groove, so that the locking member is attached to the terminal of the skin material in the locking groove of the pipe frame. It is possible to assemble the skin material by inserting the locking member, and it is excellent in assembling workability, and the skin material made of bulky three-dimensional structure woven knitting is bent vertically and horizontally according to the curvature of the pipe frame. Stretch Can.

According to the vehicle seat of the second aspect of the present invention, the pipe frame is bent and its ends are connected to each other to form a substantially square frame. Since the locking groove is formed over the entire surface and the locking groove is formed in a concave shape, the skin material made of a bulky three-dimensional structure woven or knitted material is bent in the vertical and horizontal directions in accordance with the curve of the pipe frame and stretched. can do. Further, since the locking groove is formed over the entire circumference of the pipe frame, the strength of the seat frame can be improved.

According to the vehicle seat of the third aspect of the present invention, an expanded step portion is formed inside the concave locking groove portion of the pipe frame, and the concave locking groove portion is formed. The gap is formed to be thinner than the thickness of the skin material, and the locking member at the end of the skin material is locked to the step inside the locking groove, so that the locking member at the end of the skin material is three-dimensional. Due to the elasticity of the structural woven or knitted fabric, the elastic member is pressed and locked to the concave locking groove, and can be prevented from dropping out of the locking groove of the seat frame.

Further, according to the vehicle seat of the fourth aspect of the present invention, the locking groove portion includes a pair of mutually opposing locking wall portions projecting into the inside of the pipe frame. Since the interval between the stop walls is formed to be thinner than the thickness of the skin material, and the locking member at the end of the skin material is locked to one of the pair of locking walls, the end of the skin material is The locking member is pressed against the locking wall and locked to prevent the locking member from falling off from the locking wall of the seat frame.

According to the vehicle seat of the present invention, a skin material made of a bulky three-dimensional structure woven or knitted fabric can be stretched in accordance with the curvature of the seat frame, and the seat frame is formed by extruding and then bending. Or can be formed by die casting or the like, and has an excellent appearance, no pad material is required, and the weight can be reduced.
It is possible to obtain a highly economical vehicle seat that can reduce the thickness of the seat, reduce the number of parts, reduce the number of welding points, and improve the efficiency of assembly work.

[Brief description of the drawings]

FIG. 1 shows a seat frame of a seat cushion of a vehicle seat according to the present invention, wherein (a) is a plan view,
(B) is a side view, (c) is a front view.

FIGS. 2A and 2B each show a part of a vehicle seat according to the present invention, wherein FIG. 2A is a cross-sectional view at a terminal position of a skin material, and FIG. .

FIG. 3 is a sectional view of a terminal position of a skin material of a vehicle seat according to a different embodiment of the present invention.

FIG. 4 is a cross-sectional view illustrating a terminal position of a skin material of a vehicle seat according to another embodiment of the present invention.

FIG. 5 is a partial perspective view of a skin material formed of a three-dimensional woven or knitted fabric for a vehicle seat according to the present invention.

FIG. 6 is a sectional view of an end portion of a skin material formed of a three-dimensional structure woven or knitted fabric for a vehicle seat according to the present invention.

FIG. 7 is a perspective view of a seat frame of a conventional vehicle seat.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 12 Seat cushion 21 Seat frame 21a Coupling part 22 Locking groove part 22a Step part 22b Reinforcement rib 23 Locking wall part 24 Hook part 25 Skin material 25a End part 26 Surface base cloth 27 Back base cloth 28 Intermediate layer 31 Locking member 31a Stop piece 33 Holding member

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Nobuyuki Nakano 771 Kozono, Ayase-shi, Kanagawa Inside Ikeda Bussan Co., Ltd.

Claims (4)

[Claims] 1. A vehicle seat comprising: a seat frame; and a skin material attached to the seat frame, wherein the seat frame is formed of a pipe frame, and the skin material is a front-side fabric and a back-face made of front and back woven and knitted fabrics. A three-dimensional structure woven or knitted fabric having a base cloth and an elastic intermediate layer woven and knitted integrally with the front and back base cloths, and a locking groove is integrally formed with the pipe frame; A vehicle seat, wherein a locking member attached to an end of the skin material is inserted and locked into the locking groove. 2. The pipe frame is bent, its ends are connected to each other to form a substantially rectangular frame, and the locking groove is formed over the entire circumference of the pipe frame, and the locking groove is formed in a concave shape. 2. The semiconductor device according to claim 1, wherein:
A vehicle seat according to claim 1. 3. An expanded step is formed inside the concave locking groove of the pipe frame, and the interval between the concave locking grooves is formed smaller than the thickness of the skin material. The vehicle seat according to claim 2, wherein the locking member at the end is locked to a step inside the locking groove. 4. The locking groove comprises a pair of mutually opposing locking walls protruding into the pipe frame, and the interval between the pair of locking walls is formed to be smaller than the thickness of the skin material. The vehicle seat according to claim 1, wherein a locking member at an end of the skin material is locked to one of the pair of locking walls.