CN114056208B

CN114056208B - Vehicle seat

Info

Publication number: CN114056208B
Application number: CN202110212299.7A
Authority: CN
Inventors: 中原弘人; 吉森信也
Original assignee: Andotop Usa Co ltd
Current assignee: Andotop Usa Co ltd
Priority date: 2020-07-31
Filing date: 2021-02-25
Publication date: 2024-01-16
Anticipated expiration: 2041-02-25
Also published as: CN114056208A; JP2022026974A

Abstract

The present invention provides a seat for an end vehicle, which can treat a skin without being affected by the layout of a seat frame. The distal end portion (45 a) of the traction member (45) is connected to the first and second distal end portions (35 a1, 35b 1). The rear end (45 b) of the traction member (45) is led out to the back side of the main pad (30 a), and thereby the first and second distal end portions (35 a1, 35b 1) are led into the inside of the Slit (SL). A rear end portion (45 b) of the traction member (45) is wound with a longitudinal wire (41 a) of the suspension mat (40) between the rear end portion and the main pad (30 a), extends to the rear surface of the main pad (30 a), and engages with the rear surface of the main pad (30 a).

Description

Vehicle seat

Technical Field

The present invention relates to a vehicle seat.

Background

Patent document 1 discloses a seat provided with: a pad having a main portion and a side portion; and a skin covering the cushioning material. The main part and the side part are connected near both ends, and the center is divided. The divided portions of the main portion and the side portion of the cushioning material are covered with a main portion skin and a side portion skin, respectively. The distal ends of the main portion skin in the divided portions and the distal ends of the side portion skin are clamped and fixed on the seat frame side.

Japanese patent document 1 publication No. 6-42511

Disclosure of Invention

The technique described in patent document 1 requires that the end of the skin is locked to the seat frame, and there is a problem in that the position of the end of the skin to be treated affects the layout of the seat frame.

The present invention has been made in view of the above-described problems, and an object thereof is to provide a vehicle seat capable of handling the end of the skin without being affected by the layout of the seat frame.

According to a first aspect of one or more embodiments, there is provided a vehicle seat including: a cushion portion including a main cushion forming a center portion in a seat width direction and side cushions provided on sides of the main cushion, the cushion portion being attached to the seat frame; a suspension pad coupled to the seat frame and supporting a rear side of the main pad; and a skin covering the pad portion. The vehicle seat includes: a slit part which is arranged at the boundary position of the main gasket and the side gasket and penetrates from the surface of the gasket part to the inside; the traction component penetrates the gap part and is led out to the back side of the pad part. The skin is provided with: a first distal end portion extending along the slit portion in a first skin region covering the main pad; and a second distal end portion extending along the slit portion in a second skin region covering the side pad. The front end portion of the traction member is connected to the first end portion and the second end portion, and the other end portion of the traction member is led out to the back side of the pad portion, so that the first end portion and the second end portion are led into the inside of the slit portion. The rear end portion side of the traction member is wound around the suspension mat between the traction member and the main pad, extends to the rear surface of the main pad, and engages with the rear surface of the main pad.

According to the present invention, the end of the skin can be treated without being affected by the layout of the seat frame.

Drawings

Fig. 1 is a perspective view showing a configuration of a vehicle seat.

Fig. 2 is an explanatory view showing the vehicle seat from the rear.

Fig. 3 is an explanatory diagram showing an internal structure of the vehicle seat.

Fig. 4 is an explanatory diagram showing an enlarged main portion of the vehicle seat shown in fig. 3.

Fig. 5 is an explanatory diagram showing a cross section along the AA line shown in fig. 3.

[ PREPARATION ] A method for producing a polypeptide

1 vehicle seat

10 buffer chair

20 chair back

60 headrest

25 seat frame

30 pad portions

30a main pad

30b side pad

31 support sheet

32 reinforced stiffness sheet

35 epidermis

35a main block

35a1 first end portion

35b side block

35b1 second end portion

35c back block

40 suspension pad

41a, 41c longitudinal metal lines

42a spring element

45 traction component

45a front end part

45b rear end

46 opening of

47 metal wire

50 buckle part

SL gap portion.

Detailed Description

The vehicle seat according to the present embodiment will be described below. For convenience of explanation, the front-rear direction, the left-right direction, and the up-down direction are defined with reference to the direction in a vehicle equipped with a vehicle seat.

In fig. 1, a vehicle seat 1 includes a cushion seat 10, a seatback 20, and a headrest 60. The cushion seat 10 is supported from below the buttocks of the occupant, and the seatback 20 supports the main portion of the occupant as well as the back. The headrest 60 is installed at an upper portion of the seat back 20 to support the head of the occupant.

The vehicle seat 1 is mounted on a pair of rails provided on a floor surface of a vehicle, and is configured to be movable in a front-rear direction by a known slide structure. The vehicle seat 1 has, for example, a seat lifting mechanism that can lift and lower the vehicle seat 1 relative to a floor surface. The vehicle seat 1 has, for example, an automatic adjustment (reclining) mechanism, and the rising angle of the seat back 20 can be arbitrarily adjusted.

Referring to fig. 1 to 5, the details of the seat back 20 are explained. The seat back 20 is configured by covering the outer side of the seat frame 25 supporting the seat back 20 with a cushion portion 30 and a skin 35 having cushioning properties.

The cushion portion 30 is a cushion material that is attached to the seat frame 25 and supports the back and waist of the occupant. The cushion portion 30 is formed of a synthetic resin foam such as polyurethane foam having elasticity.

The pad portion 30 includes a main pad 30a and left and right side pads 30b. The main pad 30a forms a center portion in the seat width direction, i.e., the left-right direction. The left and right side pads 30b are provided on the left and right sides of the main pad 30a.

A slit portion SL penetrating from the front surface to the rear surface of the pad portion 30 is provided at a boundary position between the main pad 30a and the side pad 30b. The slit portion SL is provided not in the entire region in the up-down direction of the cushion portion 30 but in the lower region 20a corresponding to the waist of the passenger. However, the slit portion SL may be provided over the entire area of the pad portion 30 in the up-down direction.

A support sheet 31 is provided on the back of the main pad 30a. The support sheet 31 is a fibrous sheet formed of, for example, a woven fabric, a knit fabric, a nonwoven fabric, or the like. The support sheet 31 has a size to cover substantially the entire area of the inside of the main pad 30a. The support sheet 31 is fixed to the inside of the main pad 30a and is integrated with the main pad 30a.

The support sheet 31 is assembled with a stiffening sheet 32. The stiffening sheet 32 is provided on a face of the support sheet 31 opposite to the main pad 30a, and is fixed to the main pad 30a together with the support sheet 31. That is, the reinforcing rigidity sheet 32 is sandwiched between the main pad 30a and the support sheet 31, and the reinforcing rigidity sheet 32 is covered with the support sheet 31 when the main pad 30a is viewed from the back side.

The rigidity-reinforcing sheet 32 functions as a rigidity-reinforcing member that enhances the rigidity of the inside of the main pad 30a. The stiffness-enhancing sheet 32 is formed of a fibrous sheet, such as a fabric, braid, nonwoven fabric, or the like. The rigidity-reinforcing sheet 32 is configured to have higher rigidity than the support sheet 31.

The stiffening sheet 32 is not provided in the entire area of the inside of the main pad 30a, but is provided in a necessary range. The rigidity-reinforced sheet material 32 is provided along a plurality of engagement positions with which a rear end 45b side of a traction member 45 described later is engaged. In fig. 3, the rigidity-reinforcing sheet 32 is formed in, for example, a substantially H shape, and is composed of a pair of longitudinal-direction sheets 32a and transverse-direction sheets 32 b. The longitudinal sheets 32a are provided at the left and right end portions of the back surface of the main pad 30a, respectively, and extend in the up-down direction. The lateral direction sheet 32b is provided so as to extend in the left-right direction across between the pair of longitudinal direction sheets 32 a.

The skin 35 is a surface material that covers the cushion portion 30 and forms the outer surface of the seat back 20. The skin 35 has a pocket shape corresponding to the shape of the seat back 20, and is formed by sewing, for example, a plurality of skin pieces. Each skin piece is formed by one material selected appropriately from, for example, a woven fabric, a knit fabric, a nonwoven fabric, leather, or by sewing a plurality of materials. For example, the skin 35 is composed of a main block (first skin region) 35a covering the front surface of the main pad 30a, left and right side blocks (second skin region) 35b covering the front surfaces and side surfaces of the left and right side pads 30b, and a back block 35c covering the entire back surface of the pad portion 30.

A suspension pad 40 is provided between the left and right side frames 25a constituting the seat frame 25. The suspension pad 40 is composed of left and right longitudinal wires 41a, a central longitudinal wire 41c, and a plurality of spring members 42 a.

The left and right vertical wires 41a are located at left and right edge portions of the suspension mat 40, and extend in the up-down direction, respectively. The central vertical wire 41c is located at the center of the left and right vertical wires 41a, and extends in the up-down direction.

The plurality of spring members 42a are arranged in the up-down direction, and a certain interval is provided between the respective spring members 42 a. The spring members 42a are formed as a whole of wires extending in the left-right direction, and crank-shaped bent portions are provided at desired positions. By such a curved shape, each spring member 42a can be stretched and deformed in the left-right direction.

The left and right ends of each spring member 42a are connected to the left and right longitudinal wires 41a. For example, the left and right ends of the spring member 42a are wound around the left and right longitudinal wires 41a, respectively. The central portion of each spring member 42a is connected to the central vertical wire 41c. For example, the central portion of the spring member 42a is welded to the central longitudinal wire 41c.

The left and right vertical wires 41a are connected to a plurality of support wires extending forward in the vertical direction. The front ends of the respective support wires are coupled to the side frames 25a of the seat frame 25. The suspension pad 40 is supported to the seat frame 25 via a support wire. The suspension mat 40 supported by the seat frame 25 is located on the rear side of the main pad 30a, and supports the main pad 30a from the rear side.

The suspension pad 40 can be stretched and deformed in the left-right direction by a plurality of spring members 42 a. Thereby, the suspension pad 40 can be displaced in the front-rear direction. The suspension mat 40 can appropriately receive the rearward load of the input main pad 30a in the case where the passenger leans against the seat back 20.

As shown in fig. 5, in the main block 35a covering the surface of the main pad 30a, a first end portion 35a1 as an edge of the main block 35a exists at a position corresponding to the slit portion SL. The first end portion 35a1 is present along the slit portion SL, and is set in a range corresponding to the size of the slit portion SL in the up-down direction.

Similarly, in the side block 35b covering the side pad 30b, a second end portion 35b1 as an edge of the side block 35b is present at a position corresponding to the slit portion SL. The second end portion 35b1 is present along the slit portion SL, and is set in a range corresponding to the size of the slit portion SL in the up-down direction.

The slit portion SL is provided with a traction member 45 corresponding to the first end portion 35a1 and the second end portion 35b1. The traction member 45 is a sheet-like member extending in the front-rear direction, and is provided so as to penetrate the slit portion SL. The width of the traction member 45 in the up-down direction substantially corresponds to the size of the slit SL in the up-down direction. The traction member 45 is formed by a material appropriately selected from, for example, woven fabric, knit fabric, nonwoven fabric, leather, and the like.

The front end 45a located on the front side of the traction member 45 is coupled to the first end 35a1 and the second end 35b1, respectively. Specifically, the first end portion 35a1 and the second end portion 35b1 overlap with each other with their edges being coincident. The distal end 45a of the traction member 45 overlaps the first and second distal end portions 35a1, 35b1 in an opposite direction to the first and second distal end portions 35a1, 35b1. The first end portion 35a1, the second end portion 35b1, and the distal end portion 45a of the traction member 45 are sewn up and down in overlapping ranges, thereby being integrally joined.

The rear end 45b located at the rear side of the traction member 45 is led out to the rear side which is the rear side of the main pad 30a. The rear end 45b of the traction member 45 is led out, and the first and second distal end portions 35a1, 35b1 are led into the inside (rear) of the slit portion SL. By introducing the first and second end portions 35a1, 35b1 into the slit portion SL, the first and second end portions 35a1, 35b1 are hidden inside the slit portion SL when the seat back 20 is viewed from the front, and thus the boundary position between the main pad 30a and the side pad 30b can be made neat.

The rear end 45b side of the traction member 45 extends to the rear surface of the main pad 30a, and engages with the rear surface of the main pad 30a. In this case, the traction member 45 covers the back surface of the main pad 30a in a posture in which the longitudinal wire 41a of the suspension mat 40 is caught between the traction member and the main pad 30a.

A pair of openings 33a, 33b are formed in the support sheet 31 and the rigidity-reinforcing sheet 32 fixed to the back surface of the main pad 30a. The pair of openings 33a, 33b are formed in a row in the left-right direction, one opening 33a being located on the center side of the main gasket 30a, and the other opening 33b being located on the end side (slit portion SL side) of the main gasket 30a. The pair of openings 33a and 33b are provided in plural numbers corresponding to engagement positions of the engagement portions 50 described later.

A single opening 46 is provided in the rear end 45b of the traction member 45. The opening 46 of the traction member 45 is provided at a position corresponding to the opening 33b on the slit SL side of the pair of openings 33 provided in the support sheet 31 and the stiffening sheet 32. The plurality of openings 46 are provided corresponding to engagement positions by the engagement portions 50 described later, similarly to the pair of openings 33a, 33b.

A wire 47 is fixed to the rear end 45b of the traction member 45 on the edge side of the opening 46. The metal wire 47 extends in the up-down direction along the edge of the rear end portion 45b. For example, the circumference of the wire 47 is covered with a skin, and the traction member 45 and the skin are sewn, thereby being fixed to the rear end portion 45b. The wire 47 is made of a material such as metal or resin, and is provided to secure the engagement force of the traction member 45 with respect to the engagement portion 50.

The rear end 45b of the traction member 45 engages with the rear surface of the main pad 30a by the engagement portion 50. The engagement by the engaging portion 50 is performed at one or more appropriate positions. In the present embodiment, three positions aligned in the vertical direction are set based on the engagement positions of the engaging portions 50.

The catch 50 is a shackle having, for example, a substantially C-shape. One end of the engaging portion 50 is inserted through the opening 46 of the traction member 45 and the openings 33b of the support sheet 31 and the reinforcing rigidity sheet 32, and the other end of the engaging portion 50 is inserted through the openings 33a of the support sheet 31 and the reinforcing rigidity sheet 32. The engaging portion 50 is swaged in a ring shape in a state of being inserted into the openings 46, 33a, 33b. Thereby, the rear end 45b of the traction member 45, specifically, the wire 47 and the sheet region of the reinforced stiffness sheet 32 located at the center of the pair of openings 33a, 33b are held by the catching portion 50. The stiffening sheet 32 is fixed to the inner surface of the main pad 30a, and therefore the rear end 45b of the traction member 45 is engaged with the outer surface of the inner surface of the main pad 30a by the engaging portion 50.

The rigidity-reinforcing sheet 32 is assembled to the support sheet 31 by a method such as stitching. The support sheet 31 having the reinforcing rigidity sheet 32 is integrated with the cushion portion 30 at the time of molding the cushion portion 30. Specifically, the support sheet 31 with the reinforcing rigidity sheet 32 is assembled in advance in a mold in which the cushion portion 30 is molded. The raw material of the synthetic resin foam is injected into the molding die in a state where the support sheet 31 with the rigidity-reinforcing sheet 32 is assembled. The raw material injected into the molding die impregnates the support sheet 31 with the rigidity-reinforcing sheet 32 assembled in the molding die. Further, by foaming the material injected into the mold, the cushion portion 30 is molded into a desired shape, and at the same time, the rigidity-reinforcing sheet 32 and the support sheet 31 are integrally fixed to the molded cushion portion 30.

In the case of assembling the support sheet 31 with the rigidity-reinforcing sheet 32 to the molding die, a plurality of positioning pins are provided in the molding die. Openings 33a, 33b, 46 for mounting the snap portions 50 are provided in the support sheet 31 with the rigidity-reinforcing sheet 32. The positioning pins of the mold are provided corresponding to the openings 33a, 33b, and 46, and perform a positioning function when the support sheet 31 with the reinforced rigidity sheet 32 is assembled to the mold. By this positioning function, the support sheet 31 with the reinforcing rigidity sheet 32 is fixed to a predetermined position in the back surface of the main pad 30a with high accuracy.

In this embodiment, the distal end portion 45a of the traction member 45 is coupled to the first and second distal end portions 35a1, 35b1. The rear end 45b of the traction member 45 is led out toward the rear side of the main pad 30a, and the first and second distal end portions 35a1, 35b1 are led into the slit portion SL. The trailing end 45b side of the traction member 45 is wound around the longitudinal wire 41a of the suspension mat 40 between itself and the main pad 30a, extends to the rear surface of the main pad 30a, and engages with the rear surface of the main pad 30a.

According to this configuration, the slit SL is provided in the lower region 20a, specifically, in the region corresponding to the waist of the passenger, at the boundary position between the main pad 30a and the side pad 30b. The main pad 30a is independent from the side pad 30b through the slit portion SL. Therefore, the main pad 30a can be deformed independently of the side pad 30b, and thus the side pad 30b can be restrained from being pulled by the deformation of the main pad 30a. Thus, the main cushion 30a satisfactorily follows the movement of the waist of the passenger, and thus the riding comfort can be improved.

The first and second end portions 35a1, 35b1 are engaged with the rear surface of the main pad 30a via the traction member 45. The traction member 45 can be engaged in a wide range in the back surface of the main pad 30a, and therefore the first and second end portions 35a1, 35b1 can be flexibly handled without being affected by the layout of the seat frame 25.

Further, the vertical wire 41a of the suspension mat 40 is wound between the traction member 45 and the main pad 30a. Since the traction member 45 seals the main pad 30a to the suspension mat 40, the sense of unity between the main pad 30a and the suspension mat 40 can be improved.

Since the first and second end portions 35a1, 35b1 are led into the slit portion SL, the traction member 45 is engaged with the rear surface of the main pad 30a in a state of being applied with tension. When the traction member 45 is pulled out through the inside of the vertical wire 41a without being wound into the vertical wire 41a, the traction member 45 is in a posture of directly abutting against the main pad 30a. In this case, there is a concern that not only the adhesion between the main pad 30a and the suspension mat 40 is impaired, but also the main pad 30a is pressed by the force from the traction member 45. In this point, since the vertical wire 41a is wound in, the force from the traction member 45 can be received by the rigidity of the vertical wire 41a, and thus crushing of the main pad 30a can be suppressed.

In the present embodiment, the rear end 45b of the traction member 45 is engaged with the rear surface of the main pad 30a, that is, the rear surface itself. As a method of engaging the traction member 45, there is a method of providing a dedicated wire or the like in the pad portion 30. However, the engagement method of the present embodiment can suppress the weight and cost of the vehicle seat 1 as compared with the method using the wire.

Further, since the rear end 45b of the traction member 45 is led out to the rear surface side of the main pad 30a, the traction member 45 can be engaged in the region where the rear surface side of the main pad 30a is opened. This makes it possible to perform the engagement operation between the traction member 45 and the main pad 30a with good workability.

In the present embodiment, the back surface of the main pad 30a is integrated with the reinforcing-rigidity sheet 32 having a higher rigidity than the main pad 30a, and the rear end 45b side of the traction member 45 is engaged with the reinforcing-rigidity sheet 32.

Since the main pad 30a is formed of a synthetic resin foam, the force for holding the swaged engagement portion 50 tends to be weak on the back surface of the main pad 30a. Therefore, by engaging the rear end 45b of the traction member 45 with the reinforced-rigidity sheet 32 having a higher rigidity than the main pad 30a, the engagement of the traction member 45 with the main pad 30a can be performed firmly.

In the present embodiment, the reinforcing rigidity sheet 32 is a fiber sheet, and is provided corresponding to an engagement position where the rear end 45b of the traction member 45 is engaged.

According to this structure, the reinforcing rigidity sheet 32 can be provided not only in the entire rear surface of the main pad 30a but also in a range required for engagement of the traction member 45. This can prevent waste of material and can engage the traction member 45.

In the present embodiment, the reinforcing rigidity sheet 32 is assembled to the support sheet 31 having a size larger than the reinforcing rigidity sheet 32. The stiffening sheet 32 is integrally provided with the support sheet 31 on the inside of the main pad 30a.

According to this configuration, the back surface of the main pad 30a including the rigidity-reinforcing sheet 32 can be covered with the support sheet 31. Thereby, the reinforcing rigidity sheet 32 and the main pad 30a can be integrally processed.

In the present embodiment, the rear end 45b side of the traction member 45 is engaged with the rigidity-reinforcing sheet 32 by the ring-shaped engagement portion 50 which is swaged.

According to this configuration, the force for holding the engaging portion 50 can be exerted by utilizing the rigidity of the reinforcing rigidity sheet 32. This enables the engagement by the engagement portion 50 to be securely performed.

In the present embodiment, the rigidity-reinforced sheet material 32 is provided with a pair of openings 33a and 33b through which the engaging portions 50 are inserted, corresponding to a plurality of engagement positions. The pair of openings 33a and 33b correspond to positions of positioning pins provided in a mold for integrally molding the cushion portion 30 with the rigidity-reinforcing sheet 32.

According to this configuration, the openings 33a and 33b of the traction member 45 can be engaged by the engaging portions 50 for positioning at the time of molding. This ensures the positional accuracy of the stiffening sheet 32 on the back surface of the main pad 30a, and enables appropriate engagement by the engagement portion 50.

As described above, embodiments of the present invention are described, but the discussion and drawings forming a part of this disclosure should not be construed as limiting the invention. Various alternative embodiments, examples, and operational techniques will readily occur to those skilled in the art from this disclosure.

In the above-described embodiment, the method described in the present embodiment is applicable to a seat back, but the method can also be applied to a cushion seat.

Claims

1. A vehicle seat comprising:

a cushion portion including a main cushion forming a center portion in a seat width direction and side cushions provided on sides of the main cushion, the cushion portion being attached to a seat frame;

a suspension pad coupled to the seat frame and supporting a rear side of the main pad; and

a skin covering the pad portion, characterized in that,

the vehicle seat includes:

a slit portion provided at a boundary position between the main pad and the side pad and penetrating from the front surface to the back surface of the pad portion; and

a traction member penetrating the slit portion and led out to the back side of the pad portion,

the skin is provided with:

a first distal end portion extending along the slit portion in a first skin region covering the main pad; and

a second end portion extending along the slit portion in a second skin region covering the side pad,

the front end portion of the traction member is connected to the first end portion and the second end portion, and the rear end portion of the traction member is led out to the back side of the pad portion, thereby leading the first end portion and the second end portion to the inside of the slit portion,

the rear end portion side of the traction member is wound into the suspension mat between the traction member and the main pad and extends to the rear surface of the main pad and engages with the rear surface of the main pad,

wherein a stiffening sheet is integrally fixed to the back surface of the main pad, and the rear end portion side of the traction member is engaged with the stiffening sheet by a snap-fit portion,

wherein the reinforcing rigidity sheet is provided along a plurality of engagement positions where the rear end portion side of the traction member is engaged, and is constituted by a pair of longitudinal direction sheets and a lateral direction sheet such that the reinforcing rigidity sheet is formed in an H shape, the pair of longitudinal direction sheets being provided at both end portions of the back surface of the main pad, respectively, and the lateral direction sheet being provided so as to span between the pair of longitudinal direction sheets,

and wherein a pair of openings through which the fastening portions are inserted are provided in the rigidity-reinforced sheet material corresponding to each of the plurality of engagement positions.

2. The vehicle seat according to claim 1, wherein,

the stiffness of the reinforced stiffness sheet is higher than the stiffness of the primary backing.

3. The vehicle seat according to claim 2, wherein,

the stiffening sheet is a fibrous sheet.

4. The vehicle seat according to claim 3, wherein,

the reinforced stiffness sheet is assembled to a support sheet having a size greater than the reinforced stiffness sheet,

the stiffening sheet is integrally fixed to the inside of the main pad together with the support sheet.

5. The vehicle seat according to claim 3 or 4, wherein,

the rear end portion side of the traction member is engaged with the rigidity-reinforcing sheet by a caulking annular engagement portion.

6. The vehicle seat according to claim 5, wherein,

the pair of openings correspond to the positions of the positioning pins, respectively, and the positioning pins are arranged on the forming die for integrally forming the gasket part with the rigidity-enhanced sheet.