JP2022026974A - Vehicle seat - Google Patents

Abstract

To provide a vehicle seat capable of processing an epidermis terminal without depending on a layout of a seat frame.SOLUTION: A front end part 45a of a pulling member 45 is connected to first and second terminal parts 35a1, 35b1. A rear end part 45b side of the pulling member 45 is pulled out to a rear surface side of a main pad 30a, and thus the first and second terminal parts 35a1, 35b1 are pulled inside a slit part SL. The rear end part 45b side of the pulling member 45 extends to a rear surface of the main pad 30a while involving a vertical wire 41a of a suspension mat 40 between itself and the main pad 30a, and is engaged with the rear surface of the main pad 30a.SELECTED DRAWING: Figure 5

Description

The present invention relates to a vehicle seat.

Patent Document 1 discloses a sheet including a pad including a main portion and a side portion, and a skin including a skin covering the pad material. The main portion and the side portion are formed in a connected state near both ends and in a divided state in the center. The divided portions of the main portion and the side portion of the pad material are individually covered with the main portion epidermis and the side portion epidermis. The terminal of the main skin and the terminal of the side skin in the divided portion are clipped to the seat frame side.

Jitsufuku No. 6-42511

The technique described in Patent Document 1 has the disadvantage that the terminal of the skin needs to be locked to the seat frame, and the position where the terminal of the skin is processed depends on the layout of the seat frame.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle seat capable of processing an epidermal terminal without depending on the layout of the seat frame.

According to the first aspect of the embodiment of one or more, the main pad forming the central portion in the seat width direction and the side pads provided on the sides of the main pad are provided, and the pad portion attached to the seat frame. , A vehicle seat comprising a suspension mat connected to a seat frame and supporting the back surface side of the main pad and a skin covering the pad portion is provided. This vehicle seat is provided at the boundary position between the main pad and the side pad, and has a slit portion that penetrates from the front surface to the back surface of the pad portion and a pulling member that penetrates the slit portion and is pulled out to the back surface side of the pad portion. And have. The epidermis has a first terminal portion extending along the slit portion in the first epidermis region covering the main pad and a second terminal portion extending along the slit portion in the second epidermis region covering the side pad. , Is equipped. The front end portion of the pulling member is connected to the first and second terminal portions, and the other end portion side of the pulling member is pulled out to the back surface side of the pad portion, so that the first and second terminal portions are moved to the inside of the slit portion. And pull in. Further, the rear end side of the pulling member extends to the back surface of the main pad while winding the suspension mat between the pull member and the main pad, and is engaged with the back surface of the main pad.

According to the present invention, the terminal of the epidermis can be processed without depending on the layout of the seat frame.

FIG. 1 is a perspective view showing the 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 the internal structure of the vehicle seat. FIG. 4 is an enlarged explanatory view showing a main part of the vehicle seat shown in FIG. FIG. 5 is an explanatory view showing a cross section taken along the line AA shown in FIG.

Hereinafter, the vehicle seat according to the present embodiment will be described. 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 the vehicle on which the vehicle seat is mounted.

In FIG. 1, the vehicle seat 1 has a cushion seat 10, a seat back 20, and a headrest 60. The cushion seat 10 supports the lower part from the buttocks of the occupant, and the seat back 20 supports the main part and the back of the occupant. The headrest 60 is mounted on the upper part of the seat back 20 and supports the occupant's head.

The vehicle seat 1 is attached to a pair of rails installed on the floor of the vehicle, and is configured to be movable in the front-rear direction by a well-known slide structure. The vehicle seat 1 has, for example, a seat lifter mechanism, and the vehicle seat 1 can be raised and lowered with respect to the floor surface. Further, the vehicle seat 1 has, for example, a reclining mechanism, and the standing angle of the seat back 20 can be arbitrarily adjusted.

The details of the seat back 20 will be described with reference to FIGS. 1 to 5. The seat back 20 is configured by covering the outside of the seat frame 25 that supports the seat back 20 with a pad portion 30 having cushioning properties and a skin 35.

The pad portion 30 is a cushioning material that is attached to the seat frame 25 and supports the back and waist of the occupant. The pad portion 30 is made of an elastic synthetic resin foam such as urethane foam.

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

At the boundary position between the main pad 30a and the side pad 30b, a slit portion SL penetrating from the front surface to the back surface of the pad portion 30 is provided. The slit portion SL is not provided in the entire vertical direction of the pad portion 30, but is provided in the lower region 20a corresponding to the waist portion of the occupant. However, the slit portion SL may be provided in the entire vertical direction of the pad portion 30.

A support sheet 31 is provided on the back surface of the main pad 30a. The support sheet 31 is a fiber sheet and is made of, for example, a woven fabric, a knitted fabric, a non-woven fabric, or the like. The support sheet 31 has a size that covers almost the entire back surface of the main pad 30a. The support sheet 31 is fixed to the back surface of the main pad 30a and integrated with the main pad 30a.

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

The stiffening sheet 32 functions as a stiffening member that increases the rigidity of the back surface of the main pad 30a. The stiffening sheet 32 is a fiber sheet and is formed of, for example, a woven fabric, a knitted fabric, a non-woven fabric, or the like. The stiffening sheet 32 is configured to have a higher rigidity than the support sheet 31 described above.

The stiffening sheet 32 is not provided in the entire back surface of the main pad 30a, but is provided in a necessary range. The stiffening sheet 32 is provided along a plurality of engaging positions in which the rear end portion 45b side of the pulling member 45, which will be described later, is engaged. In FIG. 3, the stiffening sheet 32 is formed in, for example, a substantially H shape, and is composed of a pair of vertical sheets 32a and a horizontal sheet 32b. The vertical sheet 32a is provided at the left and right ends of the back surface of the main pad 30a, and extends in the vertical direction. The horizontal sheet 32b is provided so as to straddle between the pair of vertical sheets 32a, and extends in the left-right direction.

The skin 35 is a face material that covers the pad portion 30 and constitutes the design surface of the seat back 20. The skin 35 has a bag shape corresponding to the shape of the seat back 20, and is formed by, for example, suturing a plurality of skin pieces. The individual skin pieces are formed from one material appropriately selected from, for example, woven fabrics, knitted fabrics, non-woven fabrics and leathers, or by suturing a plurality of materials. For example, the epidermis 35 includes a main piece (first epidermis region) 35a that covers the surface of the main pad 30a, which is the front surface, and left and right side pieces (second epidermis region) that cover the surfaces and side surfaces of the left and right side pads 30b. It is composed of 35b and a back piece 35c that covers the entire back surface of the pad portion 30.

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

The left and right vertical wires 41a are located at the left and right edges of the suspension mat 40, and extend along the vertical direction. The central vertical wire 41c is located at the center of the left and right vertical wires 41a and extends in the vertical direction.

The plurality of spring members 42a are arranged in the vertical direction, and a certain distance is provided between the individual spring members 42a. Each spring member 42a is composed of a wire extending in the left-right direction as a whole, and a crank-shaped bent portion is set at a required position. Due to such a bending shape, each spring member 42a can be stretched and deformed in the left-right direction.

The left and right ends of the individual spring members 42a are connected to the left and right vertical wires 41a. For example, the left and right ends of the spring member 42a are wound around the left and right vertical wires 41a, respectively. Further, 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 vertical wire 41c.

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

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

As shown in FIG. 5, in the main piece 35a covering the surface of the main pad 30a, the first terminal portion 35a1 which is the edge of the main piece 35a exists at a position corresponding to the slit portion SL. The first terminal portion 35a1 exists along the slit portion SL and is set in a range corresponding to the size of the slit portion SL in the vertical direction.

Similarly, in the side piece 35b covering the side pad 30b, a second terminal portion 35b1 which is an edge of the side piece 35b exists at a position corresponding to the slit portion SL. The second terminal portion 35b1 exists along the slit portion SL and is set in a range corresponding to the size of the slit portion SL in the vertical direction.

The slit portion SL is provided with a pulling member 45 corresponding to the first terminal portion 35a1 and the second terminal portion 35b1. The pulling member 45 is a sheet-shaped member extending in the front-rear direction, and is provided so as to penetrate the slit portion SL. The vertical width of the pull member 45 generally corresponds to the size of the slit portion SL in the vertical direction. The pulling member 45 is formed of a material appropriately selected from, for example, woven fabric, knitted fabric, non-woven fabric, and leather.

The front end portion 45a located on the front side of the pull member 45 is coupled to the first terminal portion 35a1 and the second terminal portion 35b1, respectively. Specifically, the first terminal portion 35a1 and the second terminal portion 35b1 are overlapped with each other so that their edges coincide with each other. The front end portion 45a of the pulling member 45 is overlapped with respect to the first and second terminal portions 35a1 and 35b1 in a direction facing the counter with respect to the first and second terminal portions 35a1 and 35b1. The first terminal portion 35a1, the second terminal portion 35b1, and the front end portion 45a of the pulling member 45 are sewn along the vertical direction in an overlapping range where they overlap each other, thereby being integrally connected.

The rear end portion 45b located on the rear side of the pulling member 45 is pulled out to the back surface side which is the rear surface of the main pad 30a. By pulling out the rear end portion 45b of the pulling member 45, the first and second terminal portions 35a1 and 35b1 are pulled into the inside (rear) of the slit portion SL. When the seat back 20 is viewed from the front by pulling the first and second terminal portions 35a1 and 35b1 into the inside of the slit portion SL, the first and second terminal portions 35a1 and 35b1 are inside the slit portion SL. Hidden, the boundary position between the main pad 30a and the side pad 30b can be finished in an orderly manner.

The rear end portion 45b side of the pulling member 45 extends to the back surface of the main pad 30a and is engaged with the back surface of the main pad 30a. In this case, the pulling member 45 covers the back surface of the main pad 30a in such a manner that the vertical wire 41a of the suspension mat 40 is caught between the pulling member 45 and the main pad 30a.

A pair of openings 33a and 33b are formed in the support sheet 31 and the stiffening sheet 32 fixed to the back surface of the main pad 30a. The pair of openings 33a and 33b are formed side by side in the left-right direction, one opening 33a is located on the center side of the main pad 30a, and the other opening 33b is on the end side (slit portion SL side) of the main pad 30a. To position. A plurality of a pair of openings 33a and 33b are provided corresponding to the engagement positions of the fasteners 50 described later.

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

Further, in the rear end portion 45b of the pulling member 45, the wire 47 is fixed to the edge side of the opening 46. The wire 47 extends in the vertical direction along the edge of the rear end portion 45b. For example, the periphery of the wire 47 is covered with an epidermis, and the pulling member 45 and the epidermis are sewn together to be 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 engaging force of the pulling member 45 with the fastener 50.

The engagement between the rear end portion 45b of the pulling member 45 and the back surface of the main pad 30a is performed by the fastener 50. Engagement by the fastener 50 is performed at one or more appropriate positions. In the present embodiment, the engagement positions of the fasteners 50 are set at three positions arranged in the vertical direction.

The fastener 50 is, for example, a hog ring having a substantially C shape. One end of the fastener 50 is inserted through the opening 46 of the pulling member 45 and the opening 33b of the support sheet 31 and the stiffening sheet 32, and the other end of the fastener 50 is the support sheet 31 and the stiffening sheet 32. It is inserted through the opening 33a of. The fastener 50 is crimped in an annular shape while being inserted through these openings 46, 33a, 33b. As a result, the rear end portion 45b of the pulling member 45, specifically the wire 47, and the sheet region located at the center of the pair of openings 33a and 33b in the stiffening sheet 32 are held by the fastener 50. Since the stiffening sheet 32 is fixed to the back surface of the main pad 30a, the fastener 50 engages the rear end portion 45b of the pulling member 45 with the outer surface of the back surface of the main pad 30a.

The stiffening sheet 32 described above is assembled to the support sheet 31 by a method such as stitching. The support sheet 31 with the stiffening sheet 32 is integrated with the pad portion 30 at the time of molding the pad portion 30. Specifically, the support sheet 31 with the stiffening sheet 32 is preset in the molding die for molding the pad portion 30. The raw material of the synthetic resin foam is injected into the molding die with the support sheet 31 with the stiffening sheet 32 set. The raw material injected into the mold is impregnated into the support sheet 31 with the stiffening sheet 32 set in the mold. Then, by foaming the raw material injected into the molding die, the pad portion 30 is molded into a required shape, and at the same time, the stiffening sheet 32 and the support sheet 31 are integrally formed with the molded pad portion 30. It is fixed.

When the support sheet 31 with the stiffening sheet 32 is set in the molding die, the molding die is provided with a plurality of positioning pins. The support sheet 31 with the stiffening sheet 32 is provided with openings 33a, 33b, 46 for attaching the fastener 50. The positioning pin of the molding die is provided corresponding to the openings 33a, 33b, and 46, and fulfills the positioning function when the support sheet 31 with the stiffening sheet 32 is set in the molding die. With this positioning function, the support sheet 31 with the stiffening sheet 32 is accurately fixed to a predetermined position on the back surface of the main pad 30a.

As described above, in the present embodiment, the front end portion 45a of the pulling member 45 is connected to the first and second terminal portions 35a1 and 35b1. The rear end portion 45b side of the pulling member 45 is pulled out toward the back surface side of the main pad 30a, whereby the first and second terminal portions 35a1 and 35b1 are pulled into the inside of the slit portion SL. There is. The rear end portion 45b side of the pulling member 45 extends to the back surface of the main pad 30a while winding the vertical wire 41a of the suspension mat 40 between the pull member 45 and the main pad 30a, and is engaged with the back surface of the main pad 30a. There is.

According to this configuration, the slit portion SL is provided in the lower region 20a of the boundary position between the main pad 30a and the side pad 30b, specifically, the region corresponding to the waist portion of the occupant. The main pad 30a and the side pad 30b are independent by the slit portion SL. Therefore, since the main pad 30a can be deformed independently of the side pad 30b, it is possible to prevent the side pad 0b from being pulled by the deformation of the main pad 30a. As a result, the main pad 30a satisfactorily follows the movement of the waist of the occupant, so that the sitting comfort can be improved.

Further, the first and second terminal portions 35a1 and 35b1 are engaged with the back surface of the main pad 30a via the pulling member 45. Since the pulling member 45 can be engaged in a wide range on the back surface of the main pad 30a, the first and second terminal portions 35a1 and 35b1 can be flexibly processed without depending on the layout of the seat frame 25. can.

In addition, the vertical wire 41a of the suspension mat 40 is caught between the pulling member 45 and the main pad 30a. Since the main pad 30a and the suspension mat 40 are brought into close contact with each other by the pulling member 45, the sense of unity between the main pad 30a and the suspension mat 40 can be improved.

In order to pull the first and second terminal portions 35a1 and 35b1 into the slit portion SL, the pulling member 45 is engaged with the back surface of the main pad 30a in a tensioned state. When the pulling member 45 is pulled out through the inside of the vertical wire 41a without involving the vertical wire 41a, the pulling member 45 is in a shape of directly pressing against the main pad 30a. In this case, not only the adhesion between the main pad 30a and the suspension mat 40 is lost, but also the main pad 30a may be crushed by the force from the pulling member 45. In this respect, by involving the vertical wire 41a, the force from the pulling member 45 can be received by the rigidity of the vertical wire 41a, so that the crushing of the main pad 30a can be suppressed.

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

Further, since the rear end portion 45b of the pulling member 45 is pulled out to the back surface side of the main pad 30a, the pulling member 45 can be engaged in the open region on the back surface side of the main pad 30a. As a result, the engagement work between the pulling member 45 and the main pad 30a can be performed with good workability.

In the present embodiment, a stiffening sheet 32 having a higher rigidity than the main pad 30a is integrated on the back surface of the main pad 30a, and the rear end portion 45b side of the pulling member 45 engages with the stiffening sheet 32. Has been done.

Since the main pad 30a is formed of a synthetic resin foam, the back surface of the main pad 30a tends to have a weak force for holding the crimped fastener 50. Therefore, by engaging the rear end portion 45b of the pulling member 45 with the stiffening sheet 32 having a higher rigidity than the main pad 30a, the pulling member 45 and the main pad 30a can be firmly engaged. ..

In the present embodiment, the stiffening sheet 32 is a fiber sheet and is provided corresponding to an engaging position in which the rear end portion 45b of the pulling member 45 is engaged.

According to this configuration, the stiffening sheet 32 can be provided not only in the entire back surface of the main pad 30a but also in the range necessary for engaging the pulling member 45. Thereby, the engagement of the pulling member 45 can be realized while suppressing the waste of the material.

In the present embodiment, the stiffening sheet 32 is assembled to a support sheet 31 having a size larger than that of the stiffening sheet 32. The stiffening sheet 32 is integrated with the support sheet 31 on the back surface of the main pad 30a.

According to this configuration, the support sheet 31 can cover the back surface of the main pad 30a including the stiffening sheet 32. As a result, the stiffening sheet 32 and the main pad 30a can be finished in a well-integrated manner.

In the present embodiment, the rear end portion 45b side of the pulling member 45 is engaged with the stiffening sheet 32 by the crimped annular fastener 50.

According to this configuration, by utilizing the rigidity of the stiffening sheet 32, the force for holding the fastener 50 can be exerted. As a result, the fastener 50 can be firmly engaged.

In the present embodiment, the stiffening sheet 32 is provided with a pair of openings 33a and 33b through which the fastener 50 is inserted, corresponding to a plurality of engaging positions. Each of the pair of openings 33a and 33b corresponds to the position of the positioning pin provided in the molding die for forming the pad portion 30 integrally with the stiffening sheet 32.

According to this configuration, the openings 33a and 33b in which the pulling member 45 is engaged by the fastener 50 can be used for positioning during molding. As a result, it is possible to appropriately engage using the fastener 50 while ensuring the positional accuracy of the stiffening sheet 32 on the back surface of the main pad 30a.

As mentioned above, embodiments of the invention have been described, but the statements and drawings that form part of this disclosure should not be understood to limit the invention. This disclosure will reveal to those skilled in the art various alternative embodiments, examples and operational techniques.

In the above-described embodiment, it is applied to the seat back, but the method shown in this embodiment can also be applied to the cushion seat.

1 Vehicle seat 10 Cushion seat 20 Seat back 60 Headrest 25 Seat frame 30 Pad part 30a Main pad 30b Side pad 31 Support sheet 32 Stiffening sheet 35 Skin 35a Main piece 35a1 First terminal part 35b Side piece 35b1 Second terminal part 35c Backpiece 40 Suspension mat 41a, 41c Vertical wire 42a Spring member 45 Pulling member 45a Front end 45b Rear end 46 Opening 47 Wire 50 Fastener SL Slit

Claims (6)

A pad portion provided with a main pad forming a central portion in the seat width direction and side pads provided on the sides of the main pad and attached to the seat frame, and a pad portion.
A suspension mat that is connected to the seat frame and supports the back surface side of the main pad,
The epidermis that covers the pad portion and
In the vehicle seat with
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 slit portion.
It has a pulling member that penetrates the slit portion and is pulled out to the back surface side of the pad portion.
The epidermis is
In the first epidermis region covering the main pad, the first terminal portion extending along the slit portion and the first terminal portion.
In the second epidermis region covering the side pad, a second terminal portion extending along the slit portion is provided.
The front end portion of the pulling member is connected to the first and second terminal portions, and the rear end portion side of the pulling member is pulled out to the back surface side of the pad portion, whereby the first and second terminal portions are referred to. Pull it inside the slit,
The rear end side of the pulling member is a vehicle seat that extends to the back surface of the main pad while winding the suspension mat between the pulling member and the main pad, and is engaged with the back surface of the main pad. A stiffening sheet having a higher rigidity than the main pad is integrally fixed to the back surface of the main pad.
The vehicle seat according to claim 1, wherein the rear end side of the pulling member is engaged with the stiffening seat. The vehicle seat according to claim 2, wherein the stiffening sheet is a fiber sheet and is provided along a plurality of engaging positions in which the rear end side of the pulling member is engaged. The stiffening sheet is assembled to a support sheet having a size larger than that of the stiffening sheet.
The vehicle seat according to claim 3, wherein the stiffening sheet is integrally fixed to the back surface of the main pad together with the support sheet. The vehicle seat according to claim 3 or 4, wherein the rear end side of the pulling member is engaged with the stiffening seat by a crimped annular fastener. The stiffening sheet is provided with a pair of openings through which the fasteners are inserted, corresponding to the plurality of engaging positions.
The vehicle seat according to claim 5, wherein each of the pair of openings corresponds to the position of a positioning pin provided in a molding die for forming the pad portion integrally with the stiffening seat.

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