JP2002210269A - Seat back for vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve appearance, a cushioning property and the touch and reduce weight by vertically and horizontally bending and stretching a skin material composed of a woven knitted fabric with a bulky cubic structure in accordance with a curve of a seat frame. SOLUTION: In this seat back, first and second wires 21, 22 are provided close to each other along the inside of the seat frame 20. The front side skin material 25 of a skin material 24 is formed of the woven knitted fabric with the cubic structure comprising a front face base fabric 26 and a rear face base fabric 27 of the front and rear woven knitted fabrics, and a elastic middle layer 28. An end part 25a of the front side skin material 25 is installed with both a hook member 31 locked to the first wire 21 and a second hook member 35. An end part 29a of a rear side skin material 29 is installed with a hook member 32 locked to the second wire 22. The end part 25a and the end part 29a are inserted between the first and second wires 21, 22. The second hook member 35 is locked to the second wire 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Normally, a seat back of a vehicle seat is
The seat frame is formed from a pad material attached to 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.

As shown in FIG. 7, in order to reduce the weight of the vehicle seat 1, a pad material is omitted, and a seat cushion 2 in which a skin material 5 is simply stretched on a seat frame 4 such as a pipe frame is provided. There is also a vehicle seat 1 including a seat back 3, but lacks cushioning. Japanese Patent Application Laid-Open No. Hei 6-57579 discloses a multi-layer structure woven fabric comprising a double-sided double-sided base fabric by a double raschel loom or the like and a bulky woven knitted fabric having a thickness of 5 mm or more, comprising connecting yarns connecting the front and back double-sided base fabrics. A knit is disclosed.
In this vehicle seat 1, a skin material 5 made of a bulky three-dimensional structure woven or knitted fabric is attached to the seat frame 4
In the case of mounting on the seat frame 4, the end portion of the skin material 5 is mounted on a hook member or the like mounted on the seat frame 4. In order to prevent these hook members and the like from being exposed to the outside, they are covered with a cover.

[0006] As shown in FIG. 6, a pad material 6 attached to a seat frame 4 of a seat back 3 is attached to a skin material 5.
In the configuration in which the terminal is treated by the locking member 8, the back board 7 is fixed to the seat frame 4 or the like by screws 9 on the back side.

[0005]

SUMMARY OF THE INVENTION Conventional vehicle seat 1
In the case where the skin material 5 made of a bulky three-dimensional structure woven or knitted fabric is attached to the substantially square frame-shaped seat frame 4, a cover for preventing a hook member or the like from being exposed to the outside must protrude outward. And worsen the appearance,
There is a risk that a seated person may come into contact with the cover, and when the seat frame 4 is formed by die-casting from a magnesium alloy or the like, a complicated shape can be easily formed. When a seated person touches or collides with the section, there is a possibility that the rear seated person cannot be sufficiently protected. In addition, the skin material 5 is stretched by applying a tensile force in the lateral direction, and the skin material 5 is bent in the vertical and horizontal directions in accordance with the seat frame 4.
Was not able to be stretched, and furthermore, the seat member was pressed more than necessary due to the strength of the repulsive force of the skin material 5, and the sitting comfort was poor, and the cushioning property and the feel were lacking. Further, when the back board 7 is fixed to the seat frame 4 with screws 9, the appearance is improved, but there is a disadvantage that the price is high. In the case of the bucket type, particularly in the case of the thick skin material 5, the skin material 5 There was a drawback that assembly work, especially covering work, was complicated.

SUMMARY OF THE INVENTION It is an object of the present invention to be able to stretch a skin material made of a bulky three-dimensional structure woven or knitted fabric in the vertical and horizontal directions in accordance with the curvature of a seat frame. Performance can be improved,
An economical vehicle that can reduce the weight, eliminate the need for padding, reduce the thickness of the seat, increase the leg space for rear seat occupants, and improve the efficiency of assembly work The purpose of the present invention is to provide a seat back for a vehicle seat.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a seat back of a vehicle seat according to the first aspect of the present invention is mounted on a seat frame and the seat frame. A seat back of a vehicle seat including a skin material, wherein the seat frame is formed of a pipe frame, and first and second wires are provided close to each other along the inside of the pipe frame; An elastic material woven and knitted integrally with the front and back base fabrics, having a side skin material and a back side skin material, wherein the front side skin material has a surface base cloth and a back base cloth made of front and back woven and knitted fabrics; A hook member engaged with the first wire is attached to an end of the front side skin material, and is attached to an end of the back side skin material. The said A hook member locked to the wire is attached, and a hook member at an end of the front skin material is locked to the first wire in a state where the front skin material covers the seat frame formed of the pipe frame. In addition, a hook member at an end of the back skin material is locked to the second wire, and an end of the front skin material and an end of the back skin material are connected between the first and second wires. Characterized in that it is inserted into

According to a second aspect of the present invention, there is provided a seat back for a vehicle seat, wherein a second hook member is attached to an end of the front skin material.

In the seat back of a vehicle seat according to a third aspect of the present invention, a second hook member attached to an end of the front side skin material is engaged with the second wire. It is characterized by.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a seat back of a vehicle seat according to the present invention. 1 to 5 each show a seat back of a vehicle seat according to the present invention, FIG. 1 is a rear perspective view of a skin material of the seat back, FIG. 2 is a perspective view of a seat frame of the seat back, and FIG. Partial cross section of seat back, FIG. 4
FIG. 5 is a partial cross-sectional view of another embodiment of the seat back, and FIG.
FIG. 3 is a partial cross-sectional perspective view of a skin material made of a three-dimensional woven or knitted fabric.

As shown in FIG. 2, a seat back 12 of a vehicle seat has a seat frame 20 formed of a pipe frame or the like formed in a substantially rectangular frame shape. The first wire 21 and the second wire 22 are provided adjacent to each other at an appropriate interval, and the third wire is provided along the upper portion inside the seat frame 20.
Wire 23 is provided.

Further, as shown in FIG.
Has a front skin material 25 and a back skin material 29. As shown in FIG. 5, the front side skin material 25 is made up of a surface base cloth 26 and a back base cloth 27 made of woven and knitted fabric.
And a three-dimensional structure woven / knitted fabric having the front and back base fabrics 26 and 27 and an elastic middle layer 28 woven and knitted integrally. In this embodiment, the front-side skin material 25 is formed integrally with the side and rear-side upper portions.

The front side skin material 25 made of the three-dimensional structure 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 variously obtained depending on the thickness of the yarn filament. Can be. Front side skin material 25
Can be formed to a thickness of 5 mm or more, preferably 10 mm. The front side skin material 25 made of the three-dimensional structure woven or knitted fabric can be manufactured by a moquette loom, 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 front side skin material 25 made of the three-dimensional structure woven or knitted fabric is pulled up, down, left and right, and back side, and is terminally processed by the seat frame 20. That is, FIG.
As shown in the figure, hook members 31 to be locked to the first wire 21 are attached to the side and lower end 25a of the front skin material 25, respectively.

An end portion 29a of the side of the back side skin material 29
The hook member 32 locked to the second wire 22
Are installed respectively. A hook member 33 is attached to an upper end 25b on the back side of the front side skin material 25,
The hook member 33 is locked to the third wire 23.

As shown in FIG. 3, the hook member 31 at the end 25a of the front skin 25 is covered with the front skin 25 covering the seat frame 20 composed of a pipe frame.
Are hooked to the first wire 21, and a hook member 32 at an end portion 29 a of the back skin material 29 is hooked to the second wire 22.

The distance between the first wire 21 and the second wire 22 is smaller than the sum of the thickness of the front skin material 25 and the thickness of the back skin material 29. A second hook member 3 is provided at the end of the end portion 25a of the front skin material 25.
5 are attached. The second hook member 35 is formed in a plate shape.

An end 25a of the front skin material 25 and an end 29a of the back skin material 29 are press-fitted and inserted between the first and second wires 21 and 22. The end 25a of the front skin material 25 and the end 2 of the back skin material 29
9a can be easily inserted using the second hook member 35.

As shown in FIG. 4, the second hook member 3
5 is bent and the tip 35 of the second hook member 35 is formed.
The end 25a of the front skin material 25 and the end 29a of the back skin material 29 are prevented from slipping out of the space between the first and second wires 21 and 22 by engaging the second wire 32 with the second wire 32. can do.

[0020]

The above is the embodiment of the seat back of the vehicle seat according to the present invention. According to the seat back of the vehicle seat according to the first aspect of the present invention, the seat frame is formed from the pipe frame. The first and second wires are formed adjacent to each other along the inside of the pipe frame, and the skin material has a front skin material and a back skin material, and the front skin material is front and back. The front side skin is formed from a three-dimensional structure woven / knitted fabric having a front base fabric and a back base fabric made of a woven or knitted fabric, and having an elastic intermediate layer woven and knitted integrally with the front and back base fabrics. The first end of the material
A hook member engaged with the second wire is attached to an end of the back skin material, and a seat frame formed of a pipe frame with the front skin material is attached. The hook member at the end of the front skin material is locked to the first wire while the hook member at the end of the back skin material is locked to the second wire, and Since the end of the front side skin material and the end of the back side skin material are inserted between the first and second wires, the skin material made of a bulky three-dimensional structure woven or knitted fabric is adjusted to the curvature of the seat frame. It can be stretched by bending it up and down and left and right, it has excellent appearance, it can improve cushioning and feel, it can reduce weight, pad material is unnecessary, and seat can be made thinner , Rear seat occupant It is possible to enlarge the leg space, it is possible to improve the working efficiency of assembling.

Further, according to the seat back of the vehicle seat according to the second aspect of the present invention, since the second hook member is attached to an end of the front side skin material, the front side skin material is formed. The first end and the second end are connected to the end and the end of the back skin material.
Can be easily press-fitted between the wires and can be prevented from coming off, and the appearance can be improved.

According to the seat back of the vehicle seat according to the third aspect of the present invention, the second hook member attached to the end of the front side skin material is engaged with the second wire. The end of the front skin material and the end of the back skin material can be easily press-fitted and inserted between the first and second wires, thereby firmly preventing escape. And the appearance can be improved.

According to the seat back of the vehicle seat of the present invention, the skin material made of a bulky three-dimensional structure woven or knitted fabric can be stretched in the vertical and horizontal directions in accordance with the curvature of the seat frame, and can be extended. It can improve cushioning and feel, reduce weight, reduce the need for padding, reduce the thickness of the seat, and increase the leg space for rear seated occupants. It is possible to obtain an economical seat back of a vehicle seat which can improve the attaching work efficiency.

[Brief description of the drawings]

FIG. 1 is a rear perspective view of a skin material of a seat back of a vehicle seat according to the present invention.

FIG. 2 is a perspective view of a seat frame of a seat back of a vehicle seat according to the present invention.

FIG. 3 is a partial sectional view of a seat back of the vehicle seat according to the present invention.

FIG. 4 is a partial cross-sectional view of another embodiment of a seat back of a vehicle seat according to the present invention.

FIG. 5 is a partial cross-sectional perspective view of a front side skin material made of a three-dimensional structure woven or knitted fabric of a seat back of a vehicle seat according to the present invention.

FIG. 6 is a sectional view of a seat back of a conventional vehicle seat.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 12 Seat back 20 Seat frame 21 1st wire 22 2nd wire 23 3rd wire 24 Skin material 25 Front skin material 25a End 26 Surface base cloth 27 Back base cloth 28 Intermediate layer 29 Back skin material 29a End Part 31 Hook member 32 Hook member 33 Hook member 35 Second hook member

Claims (3)

[Claims] 1. A seat back for a vehicle seat including a seat frame and a skin material attached to the seat frame, wherein the seat frame is formed of a pipe frame, and first and second portions are formed along the inside of the pipe frame. 2 wires are provided in proximity to each other, the skin material has a front skin material and a back skin material, and the front skin material has a surface base cloth and a back base cloth made of woven and knitted fabric on the front and back. In addition, it is formed of a three-dimensional structure woven or knitted fabric having an elastic intermediate layer woven and knitted integrally with the front and back base cloths, and is locked to the end of the front side skin material by the first wire. A hook member was attached, a hook member to be hooked to the second wire was attached to an end of the back side skin material, and the seat frame made of a pipe frame was covered with the front side skin material. In the state, the hook member at the end of the front skin material is locked to the first wire, and the hook member at the end of the back skin material is locked to the second wire, so that the front skin is formed. The end of the material and the end of the back skin material are the first and second ends.
A seat back for a vehicle seat, which is inserted between the wires. 2. The vehicle seat back according to claim 1, wherein a second hook member is attached to an end of the front side skin material. 3. The vehicle seat according to claim 2, wherein a second hook member attached to an end of the front skin material is locked to the second wire. back.