JP5297330B2 - Sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat which provides a good sitting feeling. <P>SOLUTION: The seat 1 includes: a pad material 7, which has a seat surface 31 and bank parts 32 bulging from the seat surface 31 at outside portions in the width direction of the seat surface 31; a skin material 8, which covers the surface side of the pad material 7; and a wadding material 9 disposed between the pad material 7 and the skin material 8. The wadding material 9 has a thick layer 90 which is thicker than the outside portions on the surfaces inside the width direction of the bank parts 32 of the pad material 7. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to, for example, a seat mounted on an automobile and formed to bulge out from a seating surface that supports a seated occupant and has a bank portion that is supported from the side.

FIG. 5 is a perspective view showing a seat of a conventional automobile. 6 is an AA enlarged cross-sectional view of FIG.
As shown in FIG. 5, conventionally, a seat 100 mounted on an automobile includes a seat cushion 200 that is supported from the occupant's buttocks to the thigh, a seat back 300 that is supported from the occupant's shoulder to the waist, and the occupant's head. A headrest 400 that supports the portion. The seat cushion 200 and the seat back 300 are respectively formed on the seating surfaces 210 and 310 for supporting the occupant and the left and right end portions of the seating surfaces 210 and 310 so as to bulge in the front side direction or the front side direction. Bank portions 220 and 320 that support the side portions (see, for example, Patent Document 1).

As shown in FIG. 6, the right and left ends of the bank portion 320 and the seating surface 310 are a skin material 330 provided on the surface, a wadding material 340 provided inside the skin material 330, and an inner side of the wading material 340. A pad material 350 provided on the inner side of the pad material 350, an inner cover 360 provided on the inner side of the pad material 350, and a support frame 370 that holds the inner cover 360.

  The bank portion 320 is a portion called a side support portion, and its surface is covered with a skin material 330 made of a single cloth. The wadding material 340 is made of a soft member capable of giving a soft touch in order to improve the touch feeling when the occupant sits on the seat 100, and is adhered to the back surface of the skin material 330 with an adhesive. The wadding material 340 is made of a flat plate-like elastic member having a thickness of about 5 mm.

Japanese Patent Laid-Open No. 7-124350 (FIGS. 1 to 5)

  However, even when the wading material 340 in the sheet 100 as described in Patent Document 1 has a thickness of about 5 mm, the wading material 340 is attached to the sheet 100 in the backward direction together with the skin material 330 (arrow B shown in FIG. 6). It is installed in a state of being pulled and pulled in the direction). For this reason, the wadding material 340 actually attached to the sheet 100 is crushed by the tensile force and thin and hard to 5 mm or less. As a result, in the seat 100, the fit feeling and the touch feeling were lowered, and a good seating feeling was not obtained.

Conventionally, in the sheet 100, in order to soften the bank portion 320, it has been necessary to provide a laminate in which a plurality of soft materials are laminated together on the entire bank portion 320. However, when a laminate is installed on the entire bank portion 320, the laminate is expensive, which increases the cost.
For this reason, there has been a demand for a seat 100 that has good fit and touch when seated on the seat 100, is inexpensive, and has a good seating feeling.

  Therefore, the present invention has been invented to solve the above-mentioned problems, and an object thereof is to provide a seat having a good seating feeling (fit feeling and touch feeling).

In order to solve the above-mentioned problem, the seat according to claim 1 is a pad material having a seat surface and a bank portion bulging from the seat surface on the outer side in the width direction of the seat surface, and a surface of the pad material. In a sheet comprising a covering material that covers the side, and a wadding material interposed between the pad material and the covering material, the bank portions are left and right outer bank portions that are installed at left and right ends in the vehicle width direction. And left and right inner banks interposed between the outer bank portion and the seat surface, and the boundary between the outer bank portion and the inner bank portion is the vehicle width direction inner side of the bank portion disposed in the middle portion, wherein the wadding material, the inner bank portion of the pad material, characterized by having a thick thickness layer than the outer bank portion.
Here, the seating surface is a surface where the seated person's body contacts the seat when the seated person sits on the seat, and refers to the upper surface of the seat cushion or the front surface of the seat back.

  According to this configuration, the wading material has a thick layer thicker than the outer skin material on the inner surface in the width direction of the bank portion of the pad material, so that the bank portion faces inward in the width direction. Further, it is in a protruding state. For this reason, when the seated person sits on the seat, the seated person is supported by appropriately adhering to the wadding material having a cushioning property and inflated. As a result, the fit and touch when seated are good.

The sheet according to claim 2 is the sheet according to claim 1, wherein the inner bank portion is located on the inner side in the width direction of the outer bank portion from the front of one end in the longitudinal direction of the outer bank portion. It extends along the seating surface over the front of the end, the width of the central portion is wide, and the width gradually decreases from the central portion toward both ends. .
According to such a configuration, since the seat can increase the contact area with the occupant by providing the inner bank portion swelled in the seat back, the load per unit area received by the occupant is reduced, and the Even if seated, it can be made hard to get tired.

The sheet according to claim 3 is the sheet according to claim 1 or 2, wherein the sheet includes an inner cover covered with the pad material, and the skin material is for the inner bank portion covering the inner bank portion. A skin for the seat surface that covers the seat surface, and the skin for the inner bank portion and the skin for the seat surface are continued by a stitched portion that is sewn by a sewing thread, It is drawn into the pad material by a connecting member fixed to the inner cover.
According to such a configuration, the inner bank portion skin and the seat surface skin are continuous by the stitched portion sewn by the sewing thread, and the stitched portion is drawn into the pad material by the connecting member fixed to the inner cover. Therefore, even if the skin material of the inner bank is pulled or pressed outward by an occupant or the like, it is difficult to lose its shape.

The sheet according to claim 4 is the sheet according to claim 3 , wherein the thick layer includes a first layer and a second layer on a surface side of the first layer, A widthwise end of the first layer and a widthwise opposite end of the second layer are stitched together to provide an intermediate layer between the first layer and the second layer. .
According to such a configuration, the thick layer is provided with an intermediate layer between the first layer and the second layer, so that the inner side in the width direction of the bank portion is softened toward the seated person by the amount of the intermediate layer. Can be inflated. For this reason, since the inner side of the bank portion in the width direction can be softly supported when the seated person moves in the width direction, the seating feeling can be improved.

The sheet according to claim 5 is the sheet according to claim 4, wherein a surface area of the second layer is formed larger than a surface area of the first layer.
According to such a configuration, since the surface area of the second layer is formed to be larger than the surface area of the first layer, when the outer peripheral portions of the first layer and the second layer are stitched, the first layer swells outward. Formed into a state.

The sheet according to claim 6 is the sheet according to claim 4 or 5 , wherein the first layer and the second layer are made of a material having air permeability, and the intermediate layer is the first layer. The outer peripheral part of a layer and a 2nd layer is stitched | sutured, It is formed with the filling which has air permeability and cushioning properties between the said 1st layer and a 2nd layer, It is characterized by the above-mentioned.

  According to this configuration, the entire first layer, second layer, and intermediate layer can be formed to have air permeability and cushioning properties. For this reason, it is possible to make the seat comfortable and have cushioning properties.

  ADVANTAGE OF THE INVENTION According to this invention, a seat with favorable seating feeling can be provided.

It is a perspective view which shows the sheet | seat which concerns on embodiment of this invention. It is XX expanded sectional drawing of FIG. It is a figure which shows the stitching | suture part of the sheet | seat which concerns on embodiment of this invention, (a) is the Y section enlarged view of FIG. 2, (b) is the Z section enlarged view of FIG. It is a principal part expansion schematic diagram which shows the sheet | seat which concerns on embodiment of this invention, and shows a state when a passenger | crew seated on the seat. It is a perspective view which shows the seat of the conventional motor vehicle. It is an AA expanded sectional view of FIG.

  With reference to FIGS. 1-4, an example of the sheet | seat 1 which concerns on embodiment of this invention is demonstrated.

≪Sheet structure≫
As will be described later, the seat 1 according to the present invention is applicable as long as it has bank portions 22 and 32 on the left and right of the seat surfaces 21 and 31 of the seat cushion 2 or the seat back 3. Hereinafter, as an example of the present invention, the seat 1 disposed in the right front seat of the passenger car will be described as an example. In the embodiment of the present invention, “front” is the forward side of the vehicle, “rear” is the backward side of the vehicle, and the vehicle width direction is “left and right”.

  As shown in FIG. 1, the seat 1 is composed of a separate type seat separated into a driver seat side and a passenger seat side. The seat 1 includes, for example, a seat cushion 2 that is supported from the hips to the thighs of the occupant M (seated person) (see FIG. 4), a seat back 3 that is supported from the shoulders of the occupant M to the waist, and the head of the occupant M. A headrest 4 for supporting the seat, a seat frame 5 (see FIG. 2) as a skeleton frame material for holding the seat cushion 2, and a seat rail for attaching the seat cushion 2 to the vehicle body so as to be movable in the front-rear direction (see FIG. 2). And a tilting mechanism (not shown) for connecting the seat back 3 to the seat cushion 2 in a tiltable manner (not shown).

≪Composition of seat cushion≫
When viewed from the front, the seat cushion 2 is connected to the seat surface 21 that supports the lower part of the buttocks and thighs of the occupant M (see FIG. 4), and the left and right ends of the seat surface 21 so as to expand substantially in the forward direction. And a bank portion 22 that is formed to support the right and left side portions of the occupant M and the thigh from the side.

The seat surface 21 is a surface on which most of the weight of the occupant M is loaded when the occupant M is seated on the seat 1, and is formed substantially horizontally.
The bank portion 22 is a so-called leg support portion, and is formed on the outer side in the width direction of the seat surface 21 so as to swell obliquely outward and upward from the seat surface 21. The bank portion 22 is divided into left and right outer bank portions 22a installed at the left and right ends of the seat cushion 2, and left and right inner bank portions 22b interposed between the outer bank portion 22a and the seat surface 21. Has been configured.
The outer bank portion 22 a extends from the left and right rear end portions of the seat cushion 2 to the left and right front end portions.
The inner bank portion 22b extends from the front end of the outer bank portion 22a to the front end of the outer bank portion 22a on the inner side in the width direction of the outer bank portion 22a. The width is gradually narrowed toward the part.

≪Seat bag structure≫
As shown in FIG. 1, the seat back 3 is mainly formed from a seat surface 31 and a bank portion 32 in a front view, like the seat cushion 2. That is, the seat back 3 is formed so as to extend from the seat surface 31 that supports the back of the occupant M (see FIG. 4) and to the left and right ends of the seat surface 31 and bulge substantially in the front direction. And a bank portion 32 that supports the left and right sides of the waist and back from the side.

The seat surface 31 is a surface that restrains the posture of the occupant M from being damaged by receiving the back of the occupant M when the occupant M is seated on the seat 1. The seat surface 31 is normally used in a state of being substantially vertical or slightly inclined when used.
The bank portion 32 is a so-called side support portion, and is formed on the outer side in the width direction of the seating surface 31 so as to bulge in an obliquely outer front direction from the seating surface 31. The bank portion 32 includes left and right outer bank portions 32 a installed at the left and right end portions of the seat back 3, and left and right inner bank portions 32 b interposed between the outer bank portion 32 a and the seat surface 31. Configured.
The outer bank portion 32 a extends substantially along the seat surface 31 from the left and right lower end portions of the seat back 3 to the left and right upper end portions.
The inner bank portion 32b extends along the lower seat surface 31a on the left and right outer sides of the lower seat surface 31a on the inner side in the width direction of the outer bank portion 32a, and is not formed on the left and right outer sides of the upper seat surface 31b. . The inner bank portion 32b extends from the lower end to the upper end, has a wide central portion, and is formed so that the width gradually decreases from the central portion toward both end portions.

  Next, the internal structure of the seat cushion 2 and the seat back 3 will be described. The internal structure of the seat cushion 2 is substantially the same as the internal structure of the seat back 3, so the internal structure of the seat back 3 will be described with reference mainly to FIGS. Description of the internal structure of the cushion 2 is omitted.

  As shown in FIG. 2, the seat back 3 includes a seat frame 5 that is a skeleton of the seat back 3, a pad material 7, a skin material 8 that covers the surface side of the pad material 7, a pad material 7, and a skin material. 8 and a wadding material 9 having a thick layer 90 which will be described later.

≪Composition of pad material≫
The pad material 7 is provided so as to cover the outer surface of the inner cover 51 to be described later, and is made of a flexible member that forms the original shape that forms the shape of the seat surface 31 and the bank portion 32. The pad material 7 is formed of a soft member such as a urethane pad, for example.

≪Structure of skin material≫
The skin material 8 is a member that covers the outermost surface of the seat back 3, and is formed into a bag shape by sewing a plurality of cloths, for example. The skin material 8 of the seat back 3 includes an outer bank portion 32a, an outer side wall surface of the bank portion 32 and an outer bank portion skin 8a that covers the back surface of the seat back 3, and an inner bank portion skin 8b that covers the inner bank portion 32b. , And a seating surface skin 8c covering the seating surface 31. In addition, the skin material 8 may be leather, synthetic leather, etc. other than the cloth which consists of a chemical fiber, a synthetic fiber, etc., for example.

  The outer bank skin 8a and the inner bank skin 8b are continuous by the stitched portion 11 sewn by the sewing thread 13. The inner bank portion skin 8 b and the seat surface skin 8 c are continuous by the stitched portion 12 sewn by the sewing thread 13. The stitched portion 12 is provided in a state in which the connecting member 10 whose tip is fixed to the inner cover 51 is attached and pulled to the rear side by the connecting member 10.

≪Configuration of wadding material≫
As shown in FIG. 2, the wadding material 9 is a member for improving the feel of the seat 1 when seated, and has a buffering property or elasticity that cushions an impact, and is soft and fits the body of the occupant M. It consists of a plate-shaped member. The wadding material 9 is made of a thick plate such as a urethane slab having a cushioning property with a thickness t2 of several mm (for example, about 5 mm). As described above, the wading material 9 is made of a foamed synthetic resin, and the bubbles are in communication and soft and have a restoring property. The wadding material 9 is interposed between the back surface of the skin material 8 and the front surface of the pad material 7 and bonded by an adhesive. In the sheet 1, the wadding material 9 arranged at the location of the inner bank portion 32b forms a thick layer 90 by the two wadding materials 9, 9 (the first layer 91 and the second layer 92), and the bulge is formed. I have it. In other words, the wadding material 9 is formed on the outer side of the outer bank portion 32a on the inner side in the width direction of the inner bank portion 32b (bank portion 32) of the pad material 7, which is a part close to the body of the occupant M. A thick layer 90 having a thickness t3 thicker than the thickness (t1 + t2) of the wadding material 9 is formed, and the inner bank portion 32b has a three-dimensional structure. In addition, the wading material 9 arrange | positioned in places other than the inner side bank parts 32b, such as the outer side bank part 32a and the seat surface 31, consists of one member.

<Structure of thick layer>
The thick layer 90 is provided in the inner bank portion 32b and is a layer for pushing up the skin material 8 of the inner bank portion 32b from the inner side and elastically raising it. The thick layer 90 includes a first layer 91 provided outside the pad material 7, a second layer 92 on the surface side of the first layer 91, and the first layer 91 and the second layer 92. The intermediate layer 93 interposed is laminated in a laminated state.

<Configuration of the first layer>
The first layer 91 is a single wading material 9 adhered to the outer surface of the pad material 7 of the inner bank portion 32b with an adhesive or the like.

<Configuration of the second layer>
As shown in FIG. 2, the second layer 92 is a single wadding material 9 bonded to the back surface of the skin material 8 of the inner bank portion 32 b with an adhesive or the like, and is more longitudinal and lateral than the first layer 91. The area is increased by increasing the length in the direction. The second layer 92 and the first layer 91 are formed of the wadding material 9 having the same thickness t2 of about 5 mm, for example.

<Configuration of intermediate layer>
The intermediate layer 93 is a portion provided to soften the inner bank portion 32b and improve the fit and touch when seated. The intermediate layer 91 is a hollow portion (hollow layer) formed between the first layer 91 and the second layer 92 that is longer than the first layer 91 and has a different length. The intermediate layer 93 is sewn together with both ends of the first layer 91 in the width direction (stitched portions 11 and 12) and both ends in the width direction of the second layer 92 (stitched portions 11 and 12) with the sewing thread 13. As a result, it is formed to be curved and bulge in the direction of the second layer 92 on the outer side, thus forming a hollow shape. The intermediate layer 93 is formed in a state of an air bag having a cushioning property by sealing the outer peripheral portion in a state where the inside is filled with air.

<Configuration of stitched portion>
The stitched portions 11 and 12 are sewing portions where the outer peripheral portions of the respective skin materials 8 and the outer peripheral portions of the respective wadding materials 9 are bonded and brought into close contact with each other, and are sewn together with the sewing thread 13. Since the outer peripheral portion of the intermediate layer 93 is sewn by the stitched portions 11 and 12, the outer peripheral portions of the first layer 91 and the second layer 92 are formed so that the air in the intermediate layer 93 does not leak to the outside. Since the contact is made, the intermediate layer 93 is maintained in an expanded state.

  As shown in FIG. 3 (a), the stitching portion 11 includes one wading material 9 and an outer bank skin 8a on the outer bank portion 32a, a first layer 91, a second layer 92, and an inner bank portion 32b. This is a site where the inner bank portion epidermis 8b is sutured. The stitched portion 11 is disposed in an intermediate portion of the bank portion 32 in a cross-sectional view, and is provided in a state in which the skin material 8 of the bank portion 32 is drawn into the pad material 7 and planted in the pad material 7. ing.

  As shown in FIG. 3 (b), the stitched portion 12 includes a seating surface skin 8c of the seating surface 31 and a single wadding material 9, and a first layer 91, a second layer 92 and an inner bank of the inner bank portion 32b. This is the site where the partial epidermis 8b is sutured. The stitched portion 12 is disposed at a boundary portion between the bank portion 32 and the seat surface 31 in a cross-sectional view, and the inner bank portion skin 8b and the seat surface skin 8c are pulled by the connecting member 10 to form a pad material. 7 is provided in a state of being drawn into the pad 7 and planted in the pad material 7.

  As shown in FIG. 2, the connecting member 10 is a member for restricting the stitched portion 12 from being pulled out to the front side (the seat surface 31 side). One end of the connecting member 10 is fixed to the stitching portion 12, and the other end is fixed by the inner cover 51.

  The seat frame 5 is a metal frame that forms a skeleton that supports the seat cushion 2 and includes, for example, an inner cover 51, a support frame 52, and a support plate 53.

The inner cover 51 is a metal plate member that holds the pad material 7 from the inside, and is provided in a state in which a hollow inner surface formed inside the pad material 7 is covered from the inside. The inner cover 51 is formed so as to substantially follow the front surface of the seat cushion 2 and the outer surfaces of the left and right outer sides.
The support frame 52 is a metal frame member that extends in the vertical direction along a substantially central portion of the bank portion 32 of the seat cushion 2. The support frame 52 is bolted to the inner wall of the inner cover 51 that is bent in a cross-sectional view.
The support plate 53 is a frame member that supports the pad material 7 on the seat surface 31 with the inner cover 51 interposed therebetween, and is installed so as to support the pad material 7 of the seat surface 31 and the inner cover 51 from the rear side. Yes.

≪Sheet action≫
Next, the operation of the seat 1 according to the embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 2, the seat 1 can be designed to have a three-dimensional structure by providing the intermediate layer 93 on the inner bank portion 32 b of the seat back 3 and raising the seat.

As shown in FIG. 4, the inner bank portion 32 b on the inner side in the width direction of the bank portion 32 is soft and has a hollow thick layer 90 elastically swollen to an appropriate thickness t <b> 3 (see FIG. 2). Is provided. For this reason, when the occupant M is seated on the seat 1 and leans against the seat back 3, the side surface portion of the back of the occupant M is supported by being in contact with the soft inner bank portion 32b. Ride comfort. Even if the inner bank portion 32b has a small area, the fit feeling and the touch feeling are soft, and the seating feeling can be improved. In other words, the sheet 1 of the present invention is equivalent to the case where the conventional expensive and soft laminate is installed on the entire bank portion to ensure flexibility by providing the intermediate layer 93 in the inner bank portion 32b and inflating softly. A soft feeling can be obtained with an inexpensive structure.
In addition, since the seat 1 can be provided with the inner bank portion 32b swelled on the seat back 3, the contact area with the occupant M can be increased, so that the load per unit area that the occupant M receives is reduced. Even if you sit for hours, you can make it hard to get tired.

  As shown in FIG. 2, stitched portions 11 and 12 are provided at the outer peripheral ends of the first layer 91 and the second layer 92, and the stitched portions 11 and 12 are pulled into the pad material 7 and are implanted. By being, it can attach to the state which hold | maintained the periphery of the intermediate | middle layer 93 which has the skin material 8 on the surface. For this reason, even if the skin material 8 of the inner bank portion 32b outside the intermediate layer 93 is pulled or pressed outward by the occupant M or the like, the intermediate layer 93 is not easily crushed and is not easily deformed. .

For example, when the occupant M is swung left and right by the inertial force while the vehicle is running, even if the occupant M strongly presses the inner bank portion 32b, the side of the back of the occupant M is firmly secured. The part can be held soft from the side to restrain and support the side movement. For this reason, a hold feeling can be obtained by the wadding material 9 which is a thin layer outside the inner bank portion 32b.
When the occupant M stands up from the seat 1 and leaves, the seat 1 pressed and compressed by the weight of the occupant M returns to its original shape due to the elasticity of the pad material 7, the wadding material 9, and the thick layer 90.

As shown in FIG. 1, the seat 1 is provided with an intermediate layer 93 in the left and right inner banks 32 b of the seat back 3 described above, and the same thing as the intermediate layer 93 is the right and left of the seat cushion 2. The inner banks 22b and 22b are also provided. For this reason, the left and right inner banks 22b, 22b are softly supported and supported by the intermediate layer 93 in which the buttock and thigh of the occupant M are provided in the same manner as the inner bank 32b of the seat back 3. Can do.
As a result, the seat 1 has a high fit for the occupant M, can provide a soft ride comfort, and can provide a seat that does not get tired even when seated for a long time.

[Modification]
The present invention is not limited to the above-described embodiment, and various modifications and changes can be made within the scope of the technical idea. The present invention extends to these modifications and changes. Of course.

For example, the thick layer 90 and the intermediate layer 93 formed by the wadding material 9 shown in FIG. 2 may be formed using a padding, stuffing cotton, a filler, or the like having impact buffering properties or elasticity.
Further, the intermediate layer 93 may be formed of a breathable and cushioning member such as stuffed cotton or stuffing, and the wading material 9, the skin material 8, the pad material 7, etc. may be formed of a breathable material. Absent.

In this way, the air permeability of the seat cushion 2 and the seat back 3 can be improved to make it difficult to squeeze, and it can be made comfortable even when the room temperature in the passenger compartment is high.
The breathable member is made of, for example, fibers such as cotton or synthetic fiber, or an elastic sponge or soft resin material cut into small pieces.

  In the above embodiment, the wading material 9 made of a thick plate material having a cushioning property with a thickness t2 of about several millimeters has been described. However, the present invention is not limited to this. The wadding material 9 disposed at least on the inner bank portion 32b may be a member that can form the thick layer 90 and the intermediate layer 93, and is made of, for example, a thin plate member having elasticity. It doesn't matter.

  Further, as shown in FIG. 1, in the above-described embodiment, the inner bank portion 22 b in which a thick layer 90 (see FIG. 2) is provided in a part between the bank portions 22 and 23 and the seat surfaces 21 and 31. Although having provided 32b was demonstrated, it is not limited to this. For example, the inner bank portions 22b and 32b (thick layer 90) may be provided between the bank portions 22 and 23 and the seating surfaces 21 and 31, and may be provided throughout the entire space. That is, the inner bank portions 22b and 32b (thick layer 90) may be extended along the outer bank portions 22a and 32a over the entire position side in the width direction of the outer bank portions 22a and 32a.

  In the embodiment, the seat 1 on the driver's seat side has been described as an example, but the passenger seat side can also function in the same manner.

DESCRIPTION OF SYMBOLS 1 Sheet 7 Pad material 8 Skin material 9 Wading material 21,31 Seat surface 22,32 Bank part 90 Thick layer 91 1st layer 92 2nd layer 93 Intermediate layer t1 Skin material thickness t2 Wadding material (2nd layer) Thickness t3 Thickness of thick layer

Claims (6)

A pad material having a seat surface and a bank portion bulging from the seat surface on the outer side in the width direction of the seat surface;
A skin material covering the surface side of the pad material;
In a sheet comprising a wadding material interposed between the pad material and the skin material,
The bank portion is composed of left and right outer bank portions installed at left and right end portions in the vehicle width direction, and left and right inner bank portions interposed between the outer bank portion and the seat surface,
The boundary between the outer bank portion and the inner bank portion is disposed in the vehicle width direction inner middle portion of the bank portion,
The said wadding material has a thick layer thicker than the said outer bank part in the said inner bank part of the said pad material, The sheet | seat characterized by the above-mentioned. The inner bank portion extends along the seat surface from one end in the longitudinal direction of the outer bank portion to the other end on the inner side in the width direction of the outer bank portion. The sheet according to claim 1, wherein the sheet is wide and formed so that the width gradually decreases from the central portion toward both ends. An inner cover covered with the pad material;
The skin material is composed of an inner bank part skin covering the inner bank part, and a seat surface skin covering the seat surface,
The inner bank portion skin and the seat surface skin are continuous by a stitched portion sewn with a sewing thread,
The sheet according to claim 1, wherein the stitched portion is drawn into the pad material by a connecting member fixed to the inner cover. The thick layer includes a first layer,
A second layer on the surface side of the first layer,
A widthwise end of the first layer and a widthwise end of the second layer are stitched together to provide an intermediate layer between the first layer and the second layer. The sheet according to any one of claims 1 to 3, wherein the sheet is formed. The sheet according to claim 4 , wherein the surface area of the second layer is formed larger than the surface area of the first layer. The first layer and the second layer are made of a breathable material,
The intermediate layer is formed of a filling material having air permeability and cushioning properties between the first layer and the second layer by stitching the outer peripheral portions of the first layer and the second layer. The sheet according to claim 4 or 5 .

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