JP2023088286A - vehicle seat - Google Patents

Abstract

To provide a vehicle seat including means for favorably attaching an upholstery to a seat pad without increasing the number of components, and even when a part of the seat pad is thin, capable of maintaining strength for attaching the upholstery.SOLUTION: A vehicle seat S comprises a seat pad 10 and an upholstery 2. The seat pad 10 includes a first pad member 11 and a second pad member 12 harder than the first pad member 11. The second pad member 12 includes a thin-walled part 12e partially formed thin and a thick-walled part 12f formed thicker than the thin-walled part 12e. In the second pad member 12, a first protrusion 201 for hooking the upholstery 2 in the thin-walled part 12e and a second protrusion 202 for hooking the upholstery 2 in the thick-walled part 12f are formed integrally with the second pad member 12. The width-directional length W1 of the first protrusion 201 is greater than the width-directional length W2 of the second protrusion 202.SELECTED DRAWING: Figure 5

Description

TECHNICAL FIELD The present invention relates to a vehicle seat, and more particularly to a vehicle seat including a seat pad and a skin covering the seat pad.

2. Description of the Related Art Conventionally, as shown in Patent Document 1, there is a vehicle seat provided with a seat pad composed of two layers of pad members with different hardnesses. The pad member on the seating surface side is made of soft urethane foam, and the pad member on the back layer side is made of hard expanded polypropylene (EPP), thereby improving the seating comfort and maintaining rigidity.

When covering a seat pad with a two-layer pad member as shown in Patent Document 1, a locking member such as a clip or an arrowhead provided at the edge of the upholstery is conventionally formed on the pad member. The skin was fixed to the seat pad by inserting it into the hole.

JP 2018-158096 A

However, when a locking member such as a clip is used to fix the outer skin, there is a problem that the number of parts increases and the manufacturing cost increases.
In addition, since the locking member for fixing the outer skin has substantially the same size at any position, there is a possibility that, for example, a thin portion that is relatively thinner than other portions may not be sufficiently locked. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and its object is to provide a means for suitably attaching a skin to a seat pad without increasing the number of parts, and to provide a seat pad that is partly thin-walled. To provide a vehicle seat capable of maintaining the strength for attaching an upholstery even when the seat is worn.

According to the vehicle seat of the present invention, the above problem is solved by providing a seat pad and a skin covering the seat pad, wherein the seat pad is a first pad member and is harder than the first pad member. a second pad member, wherein the second pad member has a thin portion that is partially thin and a thick portion that is thicker than the thin portion; , a first projecting portion that engages the skin at least at the thin portion and a second projecting portion that engages the skin at the thick portion are formed integrally with the second pad member, The length in the width direction of the first protrusion perpendicular to the hooking direction of the first protrusion in which the first protrusion hooks the skin is the length in which the second protrusion hooks the skin. The problem is solved by making the length of the second protrusion in the width direction orthogonal to the hooking direction of the second protrusion larger than the length of the second protrusion.

By providing the first protrusion and the second protrusion that hook the skin and are formed integrally with the second pad member, the skin can be preferably attached to the seat pad without increasing the number of parts.
Further, by making the length in the width direction of the first protrusion provided in the thin portion larger than the length in the width direction of the second protrusion provided in the thick portion, for example, the strength of the first protrusion and its surroundings can be increased. is maintained, and the strength to attach the epidermis can be maintained.

Further, in the above configuration, the thin portion may be arranged on the front side of the second pad member.
By making the front side of the second pad member thinner, the material (pad material) to be used can be reduced, and the manufacturing cost can be reduced.

Further, in the above configuration, the second pad member is formed with a first recess including the first protrusion and a second recess including the second protrusion. The length in the width direction of the first recess orthogonal to the locking direction of is preferably greater than the length in the width direction of the second recess orthogonal to the locking direction of the second protrusion.
By increasing the widthwise length of the first recess in accordance with the widthwise length of the first protrusion, it becomes easier to hook the outer skin to the first protrusion.

Further, in the above configuration, the depth of the second recess provided in the thick portion and including the second protrusion is greater than the depth of the first recess provided in the thin portion and including the first protrusion. Larger is better.
By increasing the depth of the second recess provided in the thick portion, it is possible to reduce the amount of material used. Further, for example, by making the position of the second protrusion deeper, the fixation of the epidermis by the second protrusion can be made stronger.

Further, in the above configuration, the length from the first projecting portion provided in the thin portion to the front end of the second pad member is equal to the length from the second projecting portion provided in the thick portion to the second pad member. should be smaller than the length to the front end of the
By shortening the length from the first projecting portion to the front end of the second pad material, for example, the outer skin can be easily hung.

Further, in the above configuration, an inclined surface is formed at the front corner of the second pad member so that the length in the seat width direction becomes narrower toward the front end, and the thick portion has the inclined surface. It may be provided at the corner where the surface is formed.
By providing the thick portion at the corner where the inclined surface is formed, the second pad member can be made stronger.

Further, in the above configuration, the second pad member is provided with a floor fixing portion for fixing the second pad member to the vehicle floor, and the floor fixing portion is provided in the thick portion. 2 protruding portion may be arranged in close proximity to each other.
By providing the second pad member with the floor fixing portion, for example, the vehicle seat can be easily fixed to the vehicle body floor. In addition, the strength of the floor fixing portion can be maintained by arranging it close to the second protruding portion of the thick portion.

Further, in the above configuration, it is preferable that the second pad member is formed with a fixing portion concave portion including the floor fixing portion.
By forming the fixing portion concave portion including the floor fixing portion in the second pad member, for example, by aligning the fixing portion concave portion with the convex portion formed on the vehicle body floor, the vehicle seat can be easily positioned.

Further, in the above configuration, the size of the fixing portion concave portion in the seat width direction is preferably smaller than the width direction length of the first concave portion in which the first projecting portion is provided.
By reducing the length in the width direction of the fixing portion recess, for example, the first recess and the fixing portion recess can be visually distinguished, which facilitates attachment of the outer skin.

Further, in the above configuration, a seat cushion supporting the buttocks of the occupant and having the seat pad and the skin; a seat back supporting the back of the occupant; a headrest supporting the

According to the present invention, by providing the first projecting portion and the second projecting portion which are formed integrally with the second pad member by latching the skin, the skin can be preferably attached to the seat pad without increasing the number of parts. A vehicle seat provided with the means can be provided. Further, by making the length in the width direction of the first protrusion provided in the thin portion larger than the length in the width direction of the second protrusion provided in the thick portion, for example, the strength of the first protrusion and its surroundings can be increased. is maintained, and the strength to attach the epidermis can be maintained. That is, it is possible to provide a vehicle seat capable of maintaining the strength for attaching the outer skin even when a portion of the seat pad is formed thin.
Further, according to the above configuration, by making the front side of the second pad member thin, it is possible to reduce the material (EPP) to be used and reduce the manufacturing cost.
Further, by increasing the widthwise length of the first recess in accordance with the widthwise length of the first protrusion, it becomes easier to hook the skin to the first protrusion.
Further, by increasing the depth of the second recess provided in the thick portion, it is possible to reduce the amount of material (pad material) to be used and to strengthen the fixation of the outer skin by the second projecting portion. Further, for example, by making the position of the second protrusion deeper, the fixation of the epidermis by the second protrusion can be made stronger.
Further, by shortening the length from the first projecting portion to the front end of the second pad material, for example, the skin can be easily applied.
Moreover, the second pad member can be made stronger by providing the thick portion at the corner where the inclined surface is formed.
Further, by providing the floor fixing portion in the second pad member, for example, the vehicle seat can be easily fixed to the vehicle body floor. In addition, the strength of the floor fixing portion can be maintained by arranging it close to the second protruding portion of the thick portion.
Further, by forming the fixing portion concave portion including the floor fixing portion in the second pad member, for example, by aligning the fixing portion concave portion with the convex portion formed on the vehicle body floor, the vehicle seat can be easily positioned. Become.
Further, by reducing the length of the fixing portion recess in the width direction, for example, the first recess and the fixing portion recess can be visually distinguished, which facilitates attachment of the outer skin.

1 is a perspective view of a vehicle seat according to this embodiment; FIG. FIG. 3 is an exploded perspective view of a pad member of the seat cushion of the vehicle seat according to the present embodiment; It is a perspective view which shows the lower surface front of a 2nd pad member. It is a top view of a 2nd pad member. It is a bottom view of a second pad member. It is the front view seen from the front of the second pad member. It is the back view which looked at the 2nd pad member from the back. It is a bottom view of a seat cushion which shows the state where the outer skin was attached to the 2nd pad member. FIG. 9 is a cross-sectional view taken along line IX-IX of FIG. 8; FIG. 10 is a cross-sectional view taken along line XX of FIG. 9; FIG. 9 is an enlarged view showing the portion A of FIG. 8 in an enlarged manner, showing seams extending from the skin hooking portion toward the suture line. FIG. 12 is a cross-sectional view taken along line XII-XII in FIG. 11, showing the skin hooking portion of the thick portion; FIG. 9 is a cross-sectional view taken along line XIII-XIII in FIG. 8, showing the skin hooking portion of the thin portion; FIG. 9 is an enlarged view showing an enlarged portion B of FIG. 8, showing seams provided on the outer skin. It is a figure which shows another example of a seam. It is a figure which shows another example of a seam. FIG. 4 is a cross-sectional view showing an edge of an outer skin on which a welded portion is formed; FIG. 10 is a cross-sectional view of the skin hooking portion in which the bracket is inserted; It is a figure which expands and shows the part E of FIG. FIG. 17 is a cross-sectional view taken along line XVII-XVII of FIG. 16, showing the structure of the harness hooking portion; It is a figure which shows another example of a harness latching part. FIG. 17 is an enlarged view of a portion F of FIG. 16, showing a detection sensor fixed to the second pad member; FIG. 20 is a cross-sectional view taken along line XX-XX in FIG. 19, showing a method of fixing the detection sensor; It is a figure which shows another example of the detection sensor fixed to a 2nd pad member. It is a figure which shows another example of the detection sensor fixed to a 2nd pad member. FIG. 4 is an explanatory diagram of a molding die for forming a harness hooking portion; It is a figure which shows the resin plate for harness attachment provided in the skin. FIG. 4B is a bottom view showing the back surface of the first pad member, showing the position of the back material provided on the back surface of the first pad member.

A vehicle seat S (an example of a vehicle seat) according to an embodiment of the present invention (hereinafter referred to as the present embodiment) will be described below with reference to FIGS. 1 to 24 .
In the following description, the term “front-rear direction” refers to the front-rear direction of the vehicle seat S, which is the same direction as the traveling direction of the vehicle. Further, the "seat width direction" is the width direction of the vehicle seat S (in other words, the width direction of the seat body), and is the direction that coincides with the left-right direction viewed from the occupant seated on the vehicle seat S. Further, the "vertical direction" is the vertical direction of the vehicle seat S, and is the direction that coincides with the vertical direction when the vehicle is running on a horizontal plane.

<<Vehicle seat S>>
A basic configuration of a vehicle seat S according to this embodiment will be described with reference to FIG. FIG. 1 is a perspective view of a vehicle seat S. In FIG. 1, a part of the vehicle seat S is shown with the skin 2 removed from the seat cushion S1 for convenience of illustration.
The vehicle seat S is a rear seat of an automobile that is placed on the floor of the vehicle body and can seat three passengers. However, the vehicle seat S is not limited to this, and may be a front seat arranged on the front side of the vehicle, or a second row middle seat in a vehicle having three rows of seats in the front-rear direction. Or it can be used as a third row rear seat.

The vehicle seat S includes a seat cushion S1 that serves as a seating portion that supports the buttocks of the seated person from below, a seat back S2 that serves as a backrest portion that supports the back of the seated person, and an upper portion of the seat back S2. A headrest S3 for supporting the head of a person is used as a main component.

<Seat cushion S1>
The seat cushion S1 is composed of a seat pad 10 and an outer skin 2 covering the seat pad 10, as shown in FIG. A part of the skin 2 is suspended on the side of the seat pad 10 (bottom side of the seat cushion S1), thereby forming a skin groove 7 on the surface of the seat cushion S1.

FIG. 2 is an exploded perspective view showing the seat pad 10 of the seat cushion S1 of the vehicle seat S according to this embodiment. FIG. 3 is a perspective view showing the front of the lower surface of the second pad member 12. FIG. 4 is a top view of the second pad member 12 constituting the seat pad 10, FIG. 5 is a bottom view of the second pad member 12, FIG. 6 is a front view of the second pad member 12 viewed from the front, and FIG. It is the back view which looked at the 2 pad member 12 from the back. FIG. 8 is a bottom view of the seat pad 10 showing a state in which the skin 2 is attached to the seat pad 10. FIG.

As shown in FIG. 2, the seat pad 10 is a pad laminated body formed by vertically laminating a plurality of pad members. The seat pad 10 includes a first pad member 11 arranged on the upper side (seating occupant side) and a second pad member 12 arranged on the lower side (vehicle side).

<First pad member>
The first pad member 11 is a cushioning member made of foamed resin such as urethane foam. As shown in FIG. 2, the first pad member 11 has substantially the same top surface shape as the second pad member 12 . The first pad member 11 is attached to the upper surface 12a of the second pad member 12 so as to cover the second pad member 12 from above.

A hanging groove 11 a for hanging the outer skin 2 is formed on the upper surface of the first pad member 11 . A plurality of hanging grooves 11a are formed at intervals in the seat width direction. Configured. Then, as shown in FIG. 2, the horizontal hanging grooves connect the vertical hanging grooves.

A plurality of mounting recesses 11 b for holding the mounting projections 12 b of the second pad member 12 are provided behind the first pad member 11 . An opening 11c is formed between the mounting recesses 11b, and when the second pad member 12 is assembled, the anchor through portion 12c of the second pad member 12 is exposed from the opening 11c. there is

<Second pad member 12>
The second pad member 12 is a cushioning member made of a resin material such as expanded polypropylene (EPP). The second pad member 12 is provided on the rear surface 11 d side of the first pad member 11 . The second pad member 12 is arranged to vertically overlap the first pad member 11 and supports the first pad member 11 from below.

On the upper surface 12a of the second pad member 12, a sensor housing recess 29 for housing the detection sensor 50 and a housing groove 30 provided continuously with the sensor housing recess 29 for housing the harness 40 are formed. ing. The sensor housing recess 29 and the housing groove 30 are provided so as to be recessed in the thickness direction of the seat pad 10 , in other words, in the downward direction of the seat pad 10 .

At the rear end of the second pad member 12, a plurality of mounting projections 12b for mounting to the mounting recesses 11b of the first pad member 11 and adjacent mounting recesses are provided at intervals in the seat width direction. An anchor through portion 12c arranged between 11b is formed.

The anchor through portion 12c is a through hole through which an unillustrated anchor member (extension member) is passed, and more specifically, a through hole through which an anchor member for connecting a child seat is passed. The anchor member is attached to the vehicle body, and assembled in a state in which it passes through the anchor through portion 12c from the vehicle body and protrudes forward from the seat body.

As described above, the first pad member 11 is made of foamed resin such as urethane foam, and the second pad member 12 is made of a resin material such as expanded polypropylene (EPP). That is, the first pad member 11 and the second pad member 12 are different in hardness, and in the seat pad 10 of this embodiment, the second pad member 12 is formed harder than the first pad member 11 . By forming the seat pad 10 with two layers of pad members having different hardnesses, the seat pad is made thinner than a single-layer cushion pad, while improving the seating feeling and maintaining the rigidity.

<Thin portion 12e>
As shown in FIG. 3, the second pad member 12 is formed with a thin portion 12e that is partially thin. In other words, the bottom surface 12d of the second pad member 12 is formed with a concave portion that is recessed upward, and the bottom portion of the concave portion is a thin portion 12e that is thinner than the surroundings. The periphery of the thin portion 12e, that is, the portion other than the thin portion 12e is formed thicker than the thin portion 12e. Below, the portion formed thicker than the thin portion 12e may be referred to as a thick portion 12f to distinguish it from the thin portion 12e.

The thin portion 12e is arranged on the front side of the second pad member 12 and is formed to extend in the seat width direction (horizontal direction). By forming the thin portion 12e, it is possible to reduce the amount of pad material to be used, that is, resin material such as expanded polypropylene (EPP), and to reduce the manufacturing cost.

In addition, as shown in FIGS. 3 to 5, both left and right corners 28 in front of the second pad member 12 are chamfered. In other words, both front corners 28 are formed with inclined surfaces 28a so that the length in the seat width direction becomes narrower toward the front end. The second pad member 12 is strengthened by forming the corner portion 28 with the inclined surface 28a as the thick portion 12f thicker than the thin portion 12e.

<Outer skin hooking portion 20>
As shown in FIGS. 3, 5 and 8, the lower surface 12d of the second pad member 12 is provided with a plurality of skin hooking portions 20 (protrusions) for hooking and hooking the ends of the skin 2. ing. The skin hooking portion 20 is a protrusion formed to protrude from the lower surface 12 d of the second pad member 12 . Further, the skin hooking portion 20 is formed integrally with the second pad member 12 .

The edge of the skin 2 functions as a hooked portion 6 that is hooked by the skin hooking portion 20, and the edge of the skin 2 has a hooking hole 3 at a position corresponding to the skin hooking portion 20. formed. By hooking the hooking hole 3 on the upholstery hooking portion 20, the upholstery 2 can be attached to the seat pad 10 in a state in which the first pad member 11 and the second pad member 12 are assembled as shown in FIG. can.
Conventionally, a clip or an arrowhead provided at the edge of the skin is locked to the pad member to fix the skin. The skin 2 can be preferably attached to the seat pad 10 without increasing the number of parts.

The skin hooking portion 20 includes a skin hooking portion (first skin hooking portion 201, second skin hooking portion 202) provided on the front side of the lower surface 12d of the second pad member 12, and a skin hooking portion (first skin hooking portion 201, second skin hooking portion 202) provided on the rear side. There is a third skin hooking portion 203 . First, an example of the third skin hooking portion 203 arranged on the rear side will be described.

<Third skin hooking portion 203>
As shown in FIG. 9, the third skin hooking portion 203 has a strut portion 21 erected from the lower surface 12d of the second pad member 12 and a claw portion 22 extending from the tip of the strut portion 21. is formed in an L shape. Note that the lower surface 12d of the second pad member 12 becomes the lower surface 10d of the seat pad 10 when the seat pad 10 is formed by combining the second pad member 12 and the first pad member 11 .

The claw portion 22 of the third skin hooking portion 203 extends toward the inner side of the seat pad 10 (the inner side of the seat cushion S1, in the direction of arrow C in FIG. 9). In other words, the claw portion 22 is formed to extend in a direction in which the skin 2 is pulled in when the skin 2 is attached (hereinafter sometimes referred to as a hooking direction).
Since the claw portion 22 extends toward the inside of the seat pad 10, that is, in the direction in which the skin 2 is pulled in, the end of the skin 2 is difficult to come off from the third skin hooking portion 203 after the skin 2 is attached. , the skin 2 becomes difficult to come off from the seat pad 10. - 特許庁

The third skin hooking portion 203 for fastening the skin 2 has an L-shaped cross section, so that even if the skin hooking portion 20 is damaged for some reason, it can be easily repaired. Since it can be easily repaired, even if the third skin hooking portion 203 is damaged, there is no need to discard the entire second pad member 12, for example, and waste can be reduced.

<First skin hooking portion 201>
A plurality of skin hooking portions 20 are also arranged on the front side of the second pad member 12 . A plurality of recesses 25 that are recessed upward are formed on the front side. Hereinafter, the skin hooking portion 20 formed on the thin portion 12e will be referred to as a first skin hooking portion 201, and the skin hooking portion 20 formed on the thick portion 12f will be referred to as a second skin hooking portion 202. As shown in FIG. It should be noted that the first skin hooking portion 201 corresponds to the first projecting portion of the present invention, and the second skin hooking portion 202 corresponds to the second projecting portion.

As shown in FIGS. 3 and 13, the first skin hooking portion 201 is provided in a first concave portion 251 that is recessed upward in the thin portion 12e. The first upholstery hooking portion 201 is formed as a projecting portion that projects from the side surface of the first recessed portion 251 in the direction in which the upholstery 2 is pulled in (hooking direction, arrow K direction in FIG. 13), specifically, rearward of the seat. there is The first skin hooking portion 201 is formed integrally with the second pad member 12 . As shown in FIGS. 8 and 13, the skin 2 can be hooked by passing the claws 22 of the first skin hooking portion 201 through the hooking holes 3 formed in the hooked portion 6 of the skin 2. can.

<Second skin hooking portion 202>
As shown in FIGS. 3 and 12, the second skin hooking portion 202 is provided in a second concave portion 252 formed in the thick portion 12f and recessed upward. The second skin hooking portion 202 is a projecting portion that projects from the side surface of the second recess 252 in the direction in which the skin 2 is pulled in (hooking direction, direction of arrow M in FIGS. 11 and 12). 12 and integrally formed. In other words, the second skin hooking portion 202 extends in a direction perpendicular to the inclined surface 28a of the corner portion 28 (direction of arrow M). By passing the hook portion 22 of the second skin hooking portion 202 through the hooking hole 3 formed in the hooked portion 6 of the skin 2, the skin 2 can be hooked. The second skin hooking portions 202 are arranged at the left and right front corners 28 of the second pad member 12 respectively.

<Comparison of width direction length>
The first skin hooking portion 201 of the thin portion 12e is formed such that its widthwise length W1 is larger than the widthwise length W2 of the second skin hooking portion 202 of the thick portion 12f. (See Figure 5). More specifically, the length W1 in the width direction perpendicular to the direction in which the first skin hooking portion 201 hooks the skin 2 (direction of arrow K in FIG. 8) is 2 is longer than the length W2 in the width direction orthogonal to the direction of hooking (the direction of arrow M in FIG. 8).
By forming the first skin hooking portion 201 in this manner, the strength of the first skin hooking portion 201 and the surrounding thin portion 12e can be maintained.

Further, as shown in FIG. 5, a first recess 251 in which the first skin hooking portion 201 is provided and a second recess 252 in which the second skin hooking portion 202 is provided are substantially rectangular in bottom view. is formed to be Further, the first recess 251 is formed such that the widthwise length W3 of the first recessed portion 251 is greater than the widthwise length W4 of the second recessed portion 252 .
In other words, the length W3 of the width direction of the first concave portion 251 perpendicular to the direction of hooking of the first skin hooking portion 201 (direction of arrow K) is equal to the direction of hooking of the second skin hooking portion 202 (direction of arrow M). direction) is greater than the length W4 in the width direction. In this way, by increasing the widthwise length W3 of the first concave portion 251 in accordance with the widthwise length W1 of the first skin hooking portion 201, for example, the skin 2 can be attached to the first skin hooking portion. Hooking on the portion 201 can be facilitated.
Note that the first recess 251 and the second recess 252 are protrusion recesses.

Further, as shown in FIGS. 12 and 13, the depth D4 of the second concave portion 252 including the second skin hooking portion 202 of the thick portion 12f is such that the first skin hooking portion 201 of the thin portion 12e is It is formed so as to be larger than the depth D3 of the first recess 251 that includes it. By making the depth D4 of the second recess 252 larger than the depth D3 of the first recess 251, it is possible to reduce the amount of material used and, for example, to deepen the position where the outer skin 2 is latched. , the fixation of the skin 2 by the second skin hooking portion 202 can be made stronger.

Also, the length L1 from the first skin hooking portion 201 to the front end of the second pad member 12 is preferably smaller than the length L2 from the second skin hooking portion 202 to the front end of the second pad member 12 .
More specifically, the length L1 from the side of the first recess 251 where the first skin hooking portion 201 protrudes to the nearest end of the second pad member 12 is the length L1 where the second skin hooking portion 202 projects. The length L2 from the side of the second recess 252 to the nearest end of the second pad member 12 (inclined surface 28a) is preferably smaller than L2.
By shortening the length from the first skin hooking portion 201 to the front end of the second pad member 12, for example, the skin 2 can be easily hooked.

<Striker 27>
A striker 27 is provided on the lower surface 12d of the second pad member 12 as a floor fixing portion for fixing the second pad member 12 to the vehicle floor. The striker 27 is a member formed by bending a wire into a U shape, and is attached to the second pad member 12 by insert molding. By engaging the striker 27 with a latch device or the like provided on the vehicle body floor, the vehicle seat S including the second pad member 12 can be fixed to the vehicle body floor.

Two strikers 27 are provided on the second pad member 12, and each striker 27 is arranged so as to correspond to the position of the latch device provided on the vehicle body floor.
The first skin hooking portion 201 is sandwiched between two strikers 27, as shown in FIG. Thereby, the epidermis fixing force for fixing the epidermis 2 is improved. A through hole through which a striker 27 is passed is formed in an end portion of the skin 2 , and the skin 2 is attached to the second pad member 12 by inserting the striker 27 into the through hole.

A first skin hooking portion 201 and a second skin hooking portion 202 for hooking the skin 2 to the second pad member 12 are arranged at positions avoiding the striker 27 . In other words, the first skin hooking portion 201 and the second skin hooking portion 202 are arranged so as not to overlap the position of the striker 27 . By avoiding interference between the skin 2 and the striker 27, damage to the skin 2 can be suppressed.

Also, the second skin hooking portion 202 is arranged close to the striker 27 . Since the striker 27 is attached to the second pad member 12 by insert molding, the wire or the like that supports the striker 27 is embedded in the periphery of the striker 27, so that the strength is improved compared to other parts. Therefore, by arranging the second skin hooking portion 202, which is a projecting portion, close to the striker 27, the strength of the second skin hooking portion 202 can be improved, for example.

The second skin hooking portion 202 is arranged at a predetermined distance from the striker 27 in the seat width direction (horizontal direction of the vehicle seat S). By arranging in this way, it becomes easy to fix the second pad member 12 to the vehicle body floor.
Further, the second skin hooking portion 202 is arranged at a predetermined distance from the striker 27 in the front-rear direction of the vehicle seat S. As shown in FIG. More specifically, the second skin hooking portion 202 is provided behind the striker 27 . As a result, for example, the epidermis fixing force for fixing the epidermis 2 is improved.

5, the striker 27 is arranged between the first skin hooking portion 201 and the second skin hooking portion 202 adjacent to each other. Since the skin 2 is also fixed by the striker 27, the striker 27 is provided between the first skin hooking portion 201 and the second skin hooking portion 202 for hooking the skin 2, thereby fixing the skin 2. can improve power.

Further, the second pad member 12 is formed with a striker concave portion 253 (fixed portion concave portion) containing the striker 27 therein. Like the first recess 251 and the second recess 252, the striker recess 253 is recessed upward. By providing the striker 27 in the striker concave portion 253, the amount of protrusion of the striker 27 from the lower surface 12d of the second pad member 12 is reduced, and the second pad member 12 can be made more compact.

Further, as shown in FIG. 5 , the striker recess 253 is connected to the second recess 252 including the second skin hooking portion 202 . More specifically, the rear corner of striker recess 253 is connected to a portion of second recess 252 . By forming the striker concave portion 253 in this way, the material (EPP) used can be reduced, and the manufacturing cost can be reduced.

Also, the striker concave portion 253 communicates with the front end of the second pad member 12 . In other words, the striker recess 253 extends to the front end of the second pad member 12 , and the front side portion of the striker recess 253 opens at the front end of the second pad member 12 . By communicating the striker concave portion 253 with the front end of the second pad member 12, for example, when the second pad member 12 is attached to the vehicle body floor, it is possible to check whether the striker 27 is engaged with the latch device provided on the vehicle body floor. can be seen from the front of the seat.

Further, the striker recess 253 is formed such that the seat width direction length W5 is smaller than the width direction length W1 of the first recess 251 including the first skin hooking portion 201 . By reducing the widthwise length W5 of the striker recess 253, for example, the first recess 251 and the striker recess 253 can be visually distinguished, and the outer skin 2 can be attached easily.
The floor fixing portion provided on the second pad member 12 is not limited to the U-shaped striker, and may have another shape. For example, the floor anchor may be a wire formed into an L shape. Further, the latch device may be provided on the second pad member 12 as a floor fixing portion, or may be attached to a striker provided on the floor of the vehicle body.

<Skin 2>
Next, the skin 2 hooked by the skin hooking portion 20 will be described.
The skin 2 is formed by connecting a plurality of skin pieces 2a and 2b as shown in FIG. 9, for example. The skin pieces 2a and 2b are joined together by sewing, and the sewing line 4 is provided so as to be positioned, for example, at the lower corner of the second pad member 12 when the seat pad 10 is covered.

<Seam 5>
The hooking hole 3 through which the claw portion 22 of the third skin hooking portion 203 and the like are passed is formed in the end portion (hooked portion 6) of the skin 2 as described above. Since the skin 2 is pulled by the third skin hooking portion 203, it is preferable to improve the rigidity in the pulling direction.
In this embodiment, as shown in FIG. 11, seams 5 are provided on the outer skin 2 along the directions in which the outer skin 2 is pulled (arrows J1 to J3 in FIG. 11). The seam 5 is a reinforcing portion that increases the rigidity of the skin 2 (more specifically, the skin piece 2a). The seam 5 also serves as a reinforcing portion that enhances the rigidity of the hooked portion 6 . The seams 5 are provided so as to radially extend toward the neighboring suture lines 4 when the upholstery 2 is attached to the seat pad 10 . By providing the seams 5 in this manner, the skin 2 is prevented from being excessively stretched. Since the skin 2 is difficult to stretch, the skin 2 can be attached with good tension.
In addition, the seam 5 may extend so as to be connected to the suture line 4 as shown in FIG. 11 . Also, the seam 5 may not continue to the suture line 4 and may be interrupted.

Further, another example of the seam 5 (reinforcing portion) that enhances the rigidity of the end portion (hanging portion 6) of the outer skin 2 will be described. 14A to 14C are enlarged views showing a portion B in FIG. 8, showing another example of the seam 5 provided at the end (hooked portion 6) of the outer skin 2. FIG.
The seams 5 for increasing the rigidity of the hooked portion 6 are provided around the hooking hole 3 formed at the end of the outer skin 2 (the hooked portion 6), as shown in FIGS. 14A to 14C. good too.
In the outer skin 2 shown in FIG. 14A, a seam 5 is provided along the entire circumference of the hooking hole 3 .

In the skin 2 shown in FIG. 14B, the seams 5 are hooked along a part of the periphery of the hooking hole 3 and the edge of the skin 2 (more specifically, the outer peripheral edge 6a of the hooked portion 6). It is provided at the outer peripheral end portion 6 a of the portion 6 .
In the skin 2 shown in FIG. 14C , seams 5 are formed along the entire periphery of the hooking hole 3 and the edge of the skin 2 (the outer peripheral end 6a of the hooked portion 6). 3 and the outer peripheral edge 6a.
By thus providing the seam 5 as a reinforcing portion at the edge of the upholstery 2 (the hooked portion 6), the edge of the upholstery 2 is less likely to stretch, and the seat cushion S1 can be assembled with good tension.
In particular, since the periphery of the hooking hole 3 or the outer peripheral edge 6a of the hooked portion 6 can be a weak portion, by providing the seam 5 as a reinforcing portion in that portion, the rigidity of the hooked portion 6 is improved. be able to.
In addition, the seams 5 provided at the ends of the outer skin 2 may be sewn with a single stitch like the seams 5 shown in FIGS. 14A and 14B. By sewing the seams 5 by one-stroke sewing, workability of sewing is improved.

In addition, when the outer skin 2 is made of a material that melts when heated (for example, cloth, chemical fiber, PET resin, etc.), the seams 5 shown in FIGS. Alternatively, a welded portion 8 (reinforcement portion) may be formed around the hooking hole 3 using an ultrasonic welder. For example, as shown in FIG. 14D, a resin plate 43 is arranged as a reinforcing portion on the rear surface 2c of the end portion of the skin 2 (the rear surface of the hooked portion 6), and the skin 2 and the resin plate 43 are welded to form a welded portion. 8 is formed. By welding the resin plate 43 to the edge of the skin 2 (the hooked portion 6), the rigidity of the edge of the skin 2 can be improved. In particular, the rigidity around the hooking hole 3 is improved, and the edge of the skin 2 can be stably hooked.

Also, instead of the seams 5 shown in FIGS. 14A to 14C, a melted portion may be provided in which the outer skin 2 itself is once heated, melted, and solidified using an ultrasonic welding machine. Since elongation is suppressed in the melted portion, the rigidity of the edge portion (the hooked portion 6) of the outer skin 2 can be improved. It should be noted that both the seams 5 and the fusion zone may be formed in order to improve rigidity.

The seam 5 is preferably formed in the skin pieces 2a, 2b before the skin pieces 2a, 2b are joined together to form the skin 2. As shown in FIG. Further, when the seam 5 is automatically sewn by using a machine, it is preferable to provide a positioning means (for example, a positioning hole) for the seam 5 at a position avoiding the hooking hole 3 formed in the skin piece 2a.
Also, like the seams 5, the formation of the above-described welded portions 8 and melted portions is preferably performed on the skin pieces 2a and 2b before the skin pieces 2a and 2b are joined together to form the skin 2.
Although the seam 5 provided in the third skin hooking portion 203 has been described, the seam 5 may be applied to the first skin hooking portion 201 and the second skin hooking portion 202 .

<Relief structure>
The hooking hole 3 through which the third skin hooking portion 203 passes may be provided with a relief structure formed to be larger in thickness than the support portion 21 of the third skin hooking portion 203 . That is, the hooking hole 3 of the outer skin 2 that covers only the portion that is difficult to bend, such as propylene foam, may be formed to be larger than the thickness of the strut portion 21 .
More specifically, as shown in FIG. 14A, as a relief structure, the length D1 of the hooking hole 3 in the direction in which the outer skin 2 is pulled (the direction of arrow G in FIG. 14A) is the length of the support 21. It is formed to be longer than the length D0. By forming the hooking hole 3 in this manner, the hooking hole 3 can be easily hooked to the skin hooking portion 20, and workability at the time of assembly is improved.
Although the relief structure has been described by taking the third skin hooking portion 203 as an example, the relief structure may be applied to the first skin hooking portion 201 and the second skin hooking portion 202 .

<Chamfering of skin hooking portion 20>
In the third skin hooking portion 203, as shown in FIG. 9, the top portion of the third skin hooking portion 203 is preferably chamfered. Specifically, it is preferable that the corner 22a of the claw portion 22 that hooks the outer skin 2 is chamfered. , the corner 22a crossing the direction in which the skin 2 is pulled (the direction of arrow C in FIG. 9) is preferably chamfered.
Further, as shown in FIG. 10, a corner 22b extending parallel to the pulling direction (direction of arrow C in FIG. 9) may be chamfered. By chamfering the corners 22 a and 22 b of the claw portion 22 of the skin hooking portion 20 , the hooking hole 3 of the skin 2 can easily pass through the third skin hooking portion 203 . That is, by chamfering the top of the third skin hooking portion 203, the hooked portion 6 can be easily attached.
As with the third skin hooking portion 203, the tip portions of the first skin hooking portion 201 and the second skin hooking portion 202 may be chamfered. As shown in FIGS. 12 and 13, by chamfering the tip, the hooking hole 3 of the skin 2 can easily pass through the first skin hooking portion 201 and the second skin hooking portion 202. Attachment of the hooking portion 6 is facilitated.

<Bracket 23>
As shown in FIG. 15 , a bracket 23 having an L-shaped cross section may be inserted inside the third skin hooking portion 203 . The bracket 23 is preferably made of metal, but may be made of resin. By inserting the bracket 23 into the skin hooking portion 20, the third skin hooking portion 203 is reinforced. Also, the bracket 23 may be positioned by placing the bracket 23 up to the tip of the claw portion 22 and inserting the clip 24 into the insertion hole 23a formed at the tip.
By inserting the bracket 23, the third skin hooking portion 203 is reinforced. Damage to the third skin hooking portion 203 is effectively suppressed.
The bracket 23 may be inserted inside the first skin hooking portion 201 or the second skin hooking portion 202 . By inserting the bracket 23, the first skin hooking portion 201 or the second skin hooking portion 202 is reinforced, and damage is suppressed even when the length of protrusion from the first recess 251 or the second recess 252 is large. is effective.

<Position of first skin hooking portion 201>
FIG. 13 is a cross-sectional view taken along line XIII-XIII in FIG. 8, showing the positional relationship between the first skin hooking portion 201 and the suture line 4 of the skin 2. As shown in FIG.
In the first skin hooking portion 201 shown in FIG. 13 , the claw portion 22 extends toward the inside of the seat pad 10, in other words, toward the rear of the vehicle seat S, and around the claw portion 22 is a first concave portion. 251 are formed. A through hole 26 is formed above the claw portion 22 .

As shown in FIG. 13, the first skin hooking portion 201 is located at a position where the skin 2 is fastened, that is, the claw portion 22 of the first skin hooking portion 201 is at a position higher than the adjacent suture line 4 . In other words, the claw portion 22 is positioned above the suture line 4 .
Since the position for fastening the end of the skin 2 is higher than the suture line 4, tension is applied to the skin 2 when the skin 2 is attached to the seat pad 10, and the suture line 4 can be made to look straight. In addition, the first skin hooking portion 201 is less visible from the outside, and the design of the vehicle seat S is improved.

<Accommodating groove 30>
As shown in FIGS. 2 and 4 , the second pad member 12 is provided with a housing groove 30 for housing the harness 40 so as to face the rear surface 11 d of the first pad member 11 .

The housing groove 30 includes a groove main body portion 31 that extends in the seat width direction (lateral direction) and a plurality of groove extension portions that are formed at intervals in the seat width direction and extend from the groove main body portion 31 toward the front of the seat. 32 and .
A harness hooking portion 33 for hooking the harness 40 is formed at a predetermined position in the extending direction of the groove body portion 31 .

The groove body portion 31 extends in a meandering manner from one end (left side position) of the second pad member 12 in the seat width direction to the opposite end (right side position) in the seat width direction.
A plurality of sensor housing recesses 29 for housing the detection sensors 50 are formed on the upper surface 12 a of the second pad member 12 . Specifically, one sensor housing recess 29 is formed at the central position in the seat width direction, and two sensor housing recesses 29 are formed at the left lateral position and the right lateral position.
A plurality of groove extensions 32 are formed to extend forward from the groove main body 31 and connect the groove main body 31 and the sensor housing recess 29 .

<Harness hooking portion 33>
The harness hooking portions 33 are for hooking the harness 40 , and are formed in plurality at intervals in the extending direction of the accommodation groove 30 .
As shown in FIGS. 16 and 17 , the harness hooking portion 33 is arranged to prevent the harness 40 from slipping out of the accommodation groove 30 from one side of the accommodation groove 30 (groove main body portion 31 ) to the other side. A protrusion 34 protruding toward the portion is provided.

The harness hooking portion 33 includes a concave portion 35 provided at a position corresponding to the projection portion 34 on the bottom surface of the groove body portion 31 and formed so as to be depressed downward, and a concave portion 35 formed so as to be depressed toward the rear of the seat for inserting the harness 40. A recessed portion 36 is provided. A through hole 37 is formed in the bottom surface of the concave portion 35 so as to extend therethrough in the vertical direction.

More specifically, the protrusion 34 protrudes from the upper portion of the front side portion of the groove main body portion 31 toward the rear side portion. In other words, as shown in FIG. 16, the protrusion 34 protrudes to the rear of the seat. Therefore, the projecting portion 34 can cover the harness 40 accommodated in the accommodation groove 30 from above, so that the harness 40 can be suitably hooked.

Furthermore, as shown in FIG. 17, the protrusion 34 is provided on the side of the groove body 31 so that the upper surface 34a thereof is positioned lower than the upper surface 12a of the second pad member 12. As shown in FIG. Therefore, even if the first pad member 11 is assembled to the second pad member 12, the protrusion 34 is not directly subjected to a load, and damage to the protrusion 34 is suppressed.

<Protruding Direction of Protruding Portion 34>
The projection 34 of the harness hooking portion 33 shown in FIG. 16 extends toward the rear of the seat, but as shown in FIG. , may protrude toward the side located on the front side. In other words, the protrusion 34 may protrude toward the front of the seat.
Moreover, when a plurality of harness hooking portions 33 are arranged, as shown in FIG. 18 , the protruding directions of the protrusions 34 may alternate between the adjacent harness hooking portions 33 . By arranging the protrusions 34 of the harness hooking portions 33 alternately, it is possible to more effectively prevent the harness 40 from slipping out of the accommodation groove 30 .

<Escape portion 38>
As shown in FIG. 16, the groove main body portion 31 around the harness hooking portion 33 is provided with an escape portion 38 (finger insertion portion) into which an operator's finger is inserted when the harness 40 is housed in or removed from the housing groove 30. ing. Specifically, as the finger relief portions 38 , four concave portions are formed on the left and right sides of the harness hooking portion 33 and are large enough to accommodate fingers. By providing the finger relief portion 38, the harness 40 housed in the housing groove 30 can be easily grasped and removed.

The finger escape portion 38 is provided not only around the harness hooking portion 33, but also near the base where the groove extending portion 32 extends from the groove body portion 31, as shown in FIG. may The finger relief portion 38 is formed as a recess at the position where the harness 40 branches. By forming the finger relief portion 38, the harness 40 can be easily grasped and easily removed.
Moreover, a mark indicating the position where the harness 40 is attached may be attached to the location where the harness 40 branches. By attaching a mark, the position where the harness 40 is attached becomes easier to understand.

The accommodation groove 30 is formed on the upper surface 12 a of the second pad member 12 , but is not limited to the upper surface 12 a and may be formed on the lower surface 12 d of the second pad member 12 . Further, the accommodation groove 30 may be formed in the back surface 11 d of the first pad member 11 , or the accommodation groove 30 may be formed in the upper surface of the first pad member 11 .

Further, as shown in FIG. 7, a housing groove 30 may be formed in the rear surface of the second pad member 12 for passing the harness 40 therethrough.
More specifically, a power supply harness 40 (for example, a heater harness) is arranged on the back surface of the second pad member 12, and a housing groove 30 for housing a portion of the harness 40 extending in the seat width direction is formed. , are formed below the mounting protrusions 12b. Further, in order to accommodate the harness 40 extending in the vertical direction (vertical direction) toward the seat back S2, an accommodation groove 30 is formed so as to extend in the vertical direction (vertical direction) on the back surface of the mounting projection 12b.
Generally, the harness 40 for power supply is formed with a larger diameter than the harness 40 for signal transmission. Therefore, when the harness 40 for power supply is arranged on the upper surface of the seat pad 10, the seat pad 10 may be crushed. By forming the housing groove 30 on the back surface of the second pad member 12 and housing the harness 40 for power supply in the housing groove 30, it is possible to prevent the load from being applied directly to the harness 40 and suppress the crushing of the harness 40. be.

<Method of Fixing Detection Sensor 50>
As shown in FIG. 4, a plurality of detection sensors 50 are arranged on the second pad member 12 to detect the presence or absence of a seated person. More specifically, the upper surface 12 a of the second pad member 12 is formed with a plurality of sensor housing recesses 29 , and the detection sensors 50 are housed in the sensor housing recesses 29 . Conventionally, the detection sensor 50 is fixed to the second pad member 12 by sticking it using an adhesive or the like. However, in the case of fixing using an adhesive or the like, a step of applying the adhesive or the like is required, and it takes time for the adhesive or the like to harden.

In this embodiment, as shown in FIG. 19, the detection sensor 50 itself is provided with a projecting piece 51, and by inserting the projecting piece 51 into a mounting hole 53 provided in the sensor housing recess 29, the detection sensor 50 can be accommodated as a sensor. It is possible to fix it to the concave portion 29 .

The protruding piece 51 is provided at an end portion 50b opposite to the end portion 50a provided with the coupler insertion portion 54 connected to the harness 40, and extends in the insertion direction of the detection sensor 50 from the end portion 50b. .
As shown in FIG. 20, a mounting hole 53 is formed in advance in the sensor housing recess 29, and the detection sensor 50 is fixed by inserting the protruding piece 51 into the mounting hole 53. As shown in FIG.
Since the detection sensor 50 can be attached simply by inserting it, the step of applying an adhesive can be omitted. Further, by forming the attachment hole 53 in advance, the place where the projecting piece 51 is inserted becomes clear, and the detection sensor 50 can be easily attached.

The protruding pieces 51 may be provided at both ends of the detection sensor 50 in the sheet width direction (horizontal direction), as shown in FIG. 21A. Mounting holes 53 are formed on both sides of the sensor housing recess 29 , and the operator pierces the mounting holes 53 with projecting pieces 51 at the left and right ends of the detection sensor 50 to fix the detection sensor 50 . The detection sensor 50 can be more firmly fixed to the sensor housing recess 29 by fixing it with the plurality of protruding pieces 51 .

Also, as shown in FIG. 21B, a mat clip 52 may be provided instead of the protruding piece 51 . A mat clip 52 is provided at a coupler insertion portion 54 at the base of the detection sensor 50 . The mat clip 52 is a plate made of resin or metal, and an improvement in rigidity can be expected by attaching the mat clip 52 . Also in this case, mounting holes 53 into which the ends of the mat clip 52 are inserted are formed on both sides of the sensor housing recess 29 .

Note that the mounting hole 53 may be larger than the projecting piece 51 or the mat clip 52 . If the attachment hole 53 is large, the protruding piece 51 or the mat clip 52 is likely to pierce.
If the mounting hole 53 is smaller than the protruding piece 51 or the mat clip 52, it is difficult to pierce, but the position is easy to determine without rattling.

The mounting hole 53 is formed at the same time when the second pad member 12 is foam-molded.
Note that the mounting hole 53 may not be formed in the sensor housing recess 29 , and in this case, the detection sensor 50 is mounted by directly sticking the projecting piece 51 into the side of the sensor housing recess 29 .

<Molding mold 60>
A method for forming the harness hooking portion 33 will be described with reference to FIG. 22 . FIG. 22 is a cross-sectional view schematically showing the configuration of a mold for forming the harness hooking portion 33. As shown in FIG. When forming the harness hooking portion 33, it is preferable to form it by combining a plurality of molding dies 60. As shown in FIG. It is preferably formed using a mold 60c).

More specifically, the first mold 60a and the second mold 60b are brought together to form the through hole 37, and the first mold 60a and the third mold 60c form the projection of the harness hooking portion 33. forming part 34; In this case, the width of the first mold 60a is preferably tapered downward, and the width of the second mold 60b and the third mold 60c is preferably tapered upward. By forming the molding die 60 in this manner, the ease with which the first to third dies 60a to 60c can be removed is improved.

Also, the second mold 60b and the third mold 60c are preferably non-integral. That is, by forming the second mold 60b and the third mold 60c as separate members, the second mold 60b and the third mold 60c can be removed separately after the second pad member 12 is formed. Using a separate member facilitates manufacturing and facilitates the filling of expanded polypropylene (EPP) up to the tip of the protrusion 34 .

<Harness mounting plate 41>
The seat cushion S1 is made by placing the first pad member 11 on the second pad member 12 to form the seat pad 10, then wiring the harness 40 to cover the seat pad 10 with the outer skin 2, and It is assembled by hooking (the hooked portion 6 ) on the skin hooking portion 20 .
If the harness 40 is previously attached to the back surface 2c of the outer skin 2 when assembling, it is convenient for routing the harness 40. - 特許庁
As shown in FIG. 23, a harness mounting plate 41 made of resin is provided on the back surface 2c of the upholstery 2 of the present embodiment, and a harness 40 attached to the seat pad 10 can be fixed to the back surface 2c of the upholstery 2. can.
The harness mounting plate 41 has a plate-shaped mounting portion 41a and a holding portion 41b that holds the harness 40 and connects to the mounting portion 41a.
The harness mounting plate 41 is fixed to the outer skin 2 by sewing. This is an example, and the harness mounting plate 41 may be fixed to the back surface 2c of the outer skin 2 using an adhesive. By attaching the harness 40 to the back surface 2c of the skin 2, the wiring of the harness 40 and the attachment of the skin 2 can be performed at the same time, and the number of assembly man-hours can be reduced.

<Back surface material 42>
A back surface material 42 may be attached to the back surface 11 d of the first pad member 11 as shown in FIG. 24 . The backing material 42 is provided at a position where it contacts the detection sensor 50 of the second pad member 12 when the first pad member 11 is assembled to the second pad member 12 .
As described above, the detection sensor 50 is a sensor that detects the presence or absence of a seated person (passenger), and is provided on the upper surface 12a of the second pad member 12, that is, the surface on the first pad member side.
By arranging the back surface material 42 on the portion of the back surface 11 d of the first pad member 11 facing the detection sensor 50 , when the first pad member 11 is assembled to the second pad member 12 , the back surface material 42 is It abuts on the detection sensor 50 . That is, the back surface material 42 is provided on the back surface 11 d of the first pad member 11 at a position where it contacts the detection sensor 50 , so that load transmission to the detection sensor 50 is improved.

The backing material 42 is made of, for example, a stretchable sheet material, for example, a resin sheet material made of polyvinyl chloride resin is used. The backing material 42 may be a woven fabric, a knitted fabric, a non-woven fabric, or the like made of natural fibers or synthetic fibers. Further, the back surface material 42 is attached to the back surface 11d of the first pad member 11 using an adhesive or the like.

The present embodiment has been described above with reference to the drawings. The above-described embodiment is merely an example for facilitating understanding of the present invention, and does not limit the present invention. That is, the shape, size, arrangement, etc. of the members described in the present embodiment can be changed and improved without departing from the scope of the present invention, and the present invention naturally includes equivalents thereof. be.
In addition, although the vehicle seat is given as an example of the vehicle seat of the present invention and an example of its configuration has been described, the present invention is limited to a vehicle seat mounted on a ground vehicle having wheels, such as an automobile and a railway. Instead, it may be a seat mounted on an aircraft, a ship, or the like that moves other than on the ground.

S Vehicle seat S1 Seat cushion S2 Seat back S3 Headrest 2 Skin 2a, 2b Skin piece 2c Back surface 3 Hook hole 4 Sewing line 5 Seam (reinforcing part)
6 Engaged portion 6a Outer peripheral edge 7 Skin groove 8 Welded portion (reinforcement portion)
10 seat pad 10d lower surface 11 first pad member 11a hanging groove 11b mounting recess 11c opening 11d rear surface 12 second pad member 12a upper surface 12b mounting protrusion 12c anchor passage portion 12d lower surface 12e thin portion 12f thick portion 20 skin hooking part (protruding part)
201 first skin hooking portion (first projecting portion)
202 Second skin hooking portion (second projecting portion)
203 Third skin hooking portion 21 Strut portion 22 Claw portion 22a, 22b Corner 23 Bracket 23a Insertion hole 24 Clip 25 Concave portion 251 First concave portion 252 Second concave portion 253 Striker concave portion (fixing portion concave portion)
26 through hole 27 striker (floor fixing part)
28 Corner 28a Inclined surface 29 Sensor accommodation recess 30 Accommodating groove 31 Groove main body 32 Groove extension 33 Harness hook 34 Protrusion 34a Top surfaces 35, 36 Recess 37 Through hole 38 Relief (finger insertion part)
40 Harness 41 Harness mounting plate 41a Mounting portion 41b Holding portion 42 Back surface material 43 Resin plate (reinforcing portion)
50 detection sensor 50a, 50b end 51 projecting piece 52 mat clip 53 mounting hole 54 coupler insertion part 60 molding die 60a first die 60b second die 60c third die

Claims (10)

A seat pad and a skin covering the seat pad,
The seat pad has a first pad member and a second pad member harder than the first pad member,
The second pad member has a thin portion that is partially thin and a thick portion that is thicker than the thin portion,
In the second pad member, a first projecting portion that engages the skin at least at the thin portion and a second projecting portion that engages the skin at the thick portion are integrally formed with the second pad member. is naturally formed,
The length in the width direction of the first protrusion perpendicular to the hooking direction of the first protrusion in which the first protrusion hooks the skin is the length in which the second protrusion hooks the skin. A vehicle seat, wherein the length in the width direction of the second projection perpendicular to the hooking direction of the second projection is longer than that of the second projection. 2. The vehicle seat according to claim 1, wherein the thin portion is arranged on the front side of the second pad member. The second pad member is formed with a first recess including the first protrusion and a second recess including the second protrusion,
The length in the width direction of the first recess perpendicular to the direction in which the first protrusion is hooked is greater than the length in the width direction of the second recess in the direction perpendicular to the direction in which the second protrusion is hooked. A vehicle seat according to claim 1. The depth of the second recess provided in the thick portion and including the second protrusion is greater than the depth of the first recess provided in the thin portion and including the first protrusion. Item 4. The vehicle seat according to item 3. The length from the first protrusion provided on the thin portion to the front end of the second pad member is smaller than the length from the second protrusion provided on the thick portion to the front end of the second pad member. The vehicle seat according to claim 3, characterized in that: A sloped surface is formed at a front corner of the second pad member so that the length in the seat width direction becomes narrower toward the front end,
2. The vehicle seat according to claim 1, wherein the thick portion is provided at the corner where the inclined surface is formed. The second pad member is provided with a floor fixing portion for fixing the second pad member to a vehicle floor,
4. The vehicle seat according to claim 3, wherein the floor fixing portion is arranged close to the second projecting portion provided on the thick portion. 8. The vehicle seat according to claim 7, wherein the second pad member is formed with a fixing portion concave portion including the floor fixing portion. 9. The vehicle seat according to claim 8, wherein the size in the seat width direction of the fixing portion recess is smaller than the width direction length of the first recess in which the first projecting portion is provided. a seat cushion that supports the buttocks of an occupant and has the seat pad and the skin;
a seat back that supports the back of the occupant;
2. The vehicle seat of claim 1, further comprising a headrest coupled to the seatback for supporting the occupant's head.

Images