JP2018127131A - Seat for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form part of a seat cover in a recessed shape with good industrial design while avoiding as much as possible an increase in the number of components.SOLUTION: A seat for a vehicle in which a folded first margin part E1 of a first skin piece SP1 is sewn on one edge side of a third skin piece SP3, and a folded second margin part E2 of a second skin piece SP2 is sewn on the other edge side opposite to the one edge of the third skin piece SP3 is configured such that: a planar reinforcement material 20 which is hardly bent and deformed than a seat cover 6S is mounted on the reverse side of the third skin piece SP3; and the first margin part E1 and the second margin part E2 in a folded state are pressed to the reverse side of the corresponding skin piece by the third skin piece SP3 mounted with the reinforcement material 20.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vehicle seat that includes a seat cover that is covered with a seat pad and in which a part of the seat cover is concave.

  In a general vehicle seat, a seat pad that elastically supports an occupant is covered with a seat cover that constitutes a design surface of the seat. And, the seat cover is formed by stitching a plurality of skin pieces. At this time, from the viewpoint of improving the designability, a part of the seat cover is made uneven to provide a three-dimensional relief on the design surface. There are things to leave.

  For example, the seat cover disclosed in Patent Document 1 includes a pair of skin materials corresponding to a skin piece and a planar cover material thinner than the skin material. A pair of skin material is arrange | positioned adjacent to the sheet | seat up-down direction, for example, and the seam allowance parts of each skin material are stitch | sutured in the middle surface shape. And the seam allowance part of each skin material is accommodated in the recessed part provided in the seat pad, protruding in the sheet | seat from the skin part used as a design surface. In addition, a cover material in a folded state is stitched to a portion of each skin material on the side of the seam allowance, and the free end of the cover material is aligned with the end of the corresponding seam allowance. In the known technique, when the pair of skin materials are stitched together, each cover material is sewn together at each seam allowance. Then, by expanding each skin material in a planar shape with these seams as base points, the cover material portion folded in half from the joint portion of the pair of skin materials is exposed. Thus, by arranging each cover material on the skin material portion forming the design surface, a part of the seat cover can be convex.

  When a part of the seat cover is concave, for example, a band-shaped face material is bridged between a pair of skin materials, and the belt-shaped face material is disposed on the back side of each skin material. Then, the folded seam portion of one skin material is stitched to the upper edge of the belt-shaped face material, and the folded seam margin portion of the other skin material is stitched to the lower edge of the belt-shaped surface material. A portion of the seat cover is suitably concaved by stitching each seam allowance that has been folded back and increased in thickness to the face material. At both ends of the face material in this state, an edge portion serving as a folding base point of the seam allowance portion of the skin material is arranged, and each of these edge portions is arranged along the extending direction of the face material. Therefore, by fixing the band-shaped face material with the surface fastener while being drawn into the recess of the seat pad, the face material portion which is a part of the seat cover can be made concave. In the configuration described above, from the viewpoint of avoiding deterioration in designability, in order to maintain the folded state (falling direction) of each seam allowance part, each seam allowance part is attached to the back surface of the corresponding skin material via a strip-shaped adhesive. Adhere firmly. That is, if the direction in which the seam allowance part collapses is uneven, the edges of the skin material connected to the seam margin may be arranged along the extending direction of the face material while undulating.

Japanese Utility Model Publication No. 03-53198

  By the way, when making a part of seat cover into a concave shape, in the above-mentioned structure, it is necessary to fix the seam allowance part of each skin material with the adhesive material separately. For this reason, in the above-described configuration, an increase in the number of parts of the sheet is unavoidable, and the work of bonding and fixing the seam allowance of the skin material is troublesome as expected. That is, in this type of work, the seam allowance portion is tilted in an appropriate direction while taking care not to cause wrinkles on the skin material, and the adhesive material is arranged along the seam allowance portion. In this state, using a hot press device or the like, the seam allowance of each skin material is firmly bonded and fixed to the back surface of the corresponding skin material via the adhesive. In the configuration where the seam allowance is firmly bonded and fixed to the skin material, if the surface material is fixed with an adhesive while wrinkles are generated, it is substantially impossible to remove the wrinkles later. . The present invention was devised in view of the above points, and the problem to be solved by the present invention is to make a part of the seat cover concave with a good design while avoiding an increase in the number of parts as much as possible. is there.

  As means for solving the above problems, a vehicle seat of the first invention includes a seat pad that can elastically support an occupant, and a seat cover that covers the seat pad and forms a design surface of the seat. Yes. In the present invention, at least a part of the seat cover is formed of a first skin piece, a second skin piece, and a third skin piece bridged between the first skin piece and the second skin piece. The third skin piece is arranged on the seat pad side as compared with the first skin piece and the second skin piece, and the first seam allowance of the folded back first skin piece is provided on one edge side of the third skin piece. The part is stitched, and the second seam allowance part folded back of the second skin piece is stitched to the other edge side opposite to one edge of the third skin piece. In this type of seat configuration, it is desirable to make a part of the seat cover concave with a good design while avoiding an increase in the number of parts as much as possible.

  Therefore, in the present invention, the surface of the third skin piece is attached to the back surface of the third skin piece which is less bent and deformed than the seat cover, and is folded by the third skin piece to which the reinforcement material is attached. The first seam allowance part and the second seam allowance part are pressed toward the back side of the corresponding skin piece. In the present invention, the folded state of the first seam allowance and the second seam allowance can be maintained by pressing the third skin piece to which the reinforcing material is attached, without requiring an adhesive. Further, by omitting the adhesive, it is possible to relatively move the skin pieces corresponding to the respective stitch margins. For this reason, even if wrinkles are formed on each skin piece when the seat cover is formed, the wrinkles on the skin pieces can be removed relatively easily.

  The vehicle seat of the second aspect of the invention is the vehicle seat of the first aspect of the invention, in which the reinforcing material is disposed to be locked to the recess of the seat pad. In the present invention, the third skin piece forming the concave seat cover portion can be arranged at an appropriate position of the seat pad without requiring a hook-and-loop fastener by locking the reinforcing material to the concave portion.

  The vehicle seat of the third invention is the vehicle seat of the second invention, wherein the third skin piece to which the reinforcing material is attached is pushed into the recess. In this invention, the 3rd skin piece and the reinforcing material are pushed into the recessed part, and the 3rd skin piece can be reliably arrange | positioned by the suitable place of a seat pad.

  The vehicle seat according to a fourth aspect is the vehicle seat according to the third aspect, wherein the first seam allowance and the second seam allowance are disposed in the recess together with the reinforcing material. In the present invention, since the first seam allowance part and the second seam allowance part are arranged in the recess of the seat pad together with the third skin piece, it is possible to make the seat cover unintentionally convex at each seam allowance part. It can be avoided.

  According to the first invention of the present invention, it is possible to make a part of the seat cover concave with a good design while avoiding an increase in the number of parts as much as possible. Further, according to the second invention, it is possible to make a part of the seat cover concave at an appropriate position while preferably avoiding an increase in the number of parts. According to the third aspect of the invention, a part of the seat cover can be made more concave at an appropriate place. According to the fourth aspect of the invention, a part of the seat cover can be further recessed with a good design.

It is a perspective view of a vehicle seat. It is a perspective view of a seat pad. It is sectional drawing of a part of seat back equivalent to the III-III line cross section of FIG. It is sectional drawing of a part of seat cover equivalent to the III-III line cross section of FIG. It is sectional drawing of a part of seat cover concerning a modification.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. In each figure, arrows indicating the front-rear direction, the vertical direction, and the left-right direction of the vehicle seat are appropriately illustrated. The vehicle seat 2 in FIG. 1 includes a seat cushion 4, a seat back 6, and a headrest 8. Each of these seat components includes a seat frame (4F, 6F, 8F) that forms a seat skeleton, a seat pad (4P, 6P, 8P) that can elastically support an occupant, and a seat cover that covers the seat pad ( 4S, 6S, 8S). A lower portion of a seat back 6 (details will be described later) is connected to the rear portion of the seat cushion 4 so as to be able to rise and fall, and a headrest 8 is disposed on the upper portion of the seat back 6 in a standing state.

[Seatback]
In the seat back 6, a seat pad 6P is disposed on the seat frame 6F and covered with a seat cover 6S (details of each member will be described later as appropriate). At this time, considering the design of the seat, the upper center of the seat cover 6S is concave, and a concave seat cover portion (third skin piece SP3 described later) is provided on the seat pad 6P as shown in FIG. It arrange | positions in the below-mentioned recessed part 10 currently provided. In this type of configuration, it is desirable to make a part of the seat cover 6S concave with a good design while avoiding an increase in the number of parts as much as possible. Therefore, in this embodiment, in the configuration (reinforcing material 20) to be described later, a part of the seat cover 6S is made concave with a good design while avoiding an increase in the number of parts as much as possible. Hereinafter, each configuration will be described in detail.

[Seat frame / Seat pad]
The seat frame 6F (not shown) is typically a substantially arched frame, and can be formed of a material such as a metal or a hard resin having excellent rigidity. 2, the seat pad 6P is a substantially rectangular member in a front view that forms the outer shape of the seat, and can be formed of a foamed resin such as polyurethane foam (density: 10 kg / m ^{3 to} 60 kg / m ³ ). . The front surface of the seat pad 6P constitutes a seating surface on which an occupant can rest, and a recess 10 and a groove 12 described later are provided. A headrest seat pad 8P is integrally provided on the seat pad 6P. And the groove part 12 is a groove-shaped dent part which divides the upper part and lower part of the seat pad 6P. The groove portion 12 has a substantially semicircular shape that is convex upward in a front view, and is gradually curved upward toward the center in the sheet width direction. Note that a locking member (not shown) can be disposed on the bottom surface of the groove portion 12, and for example, a seat cover portion drawn into the groove portion 12 can be locked to the locking member.

[Concave]
Then, a substantially rectangular recess 10 is provided in the upper part of the seat pad 6P in front view with reference to FIG. The concave portion 10 is a concave portion extending in the vertical direction at the center in the sheet width direction, and a concave seat cover portion (third skin piece SP3) described later can be positioned and disposed. As shown in FIG. 3, the recess 10 is substantially U-shaped in a cross-sectional view, and includes a right inner wall 10a standing forward at the right end and a left inner wall 10b rising forward at the left end. Is provided. Here, referring to FIG. 3, the width dimension W <b> 1 in the left-right direction of the recess 10 can be appropriately set according to the width dimension of the concave seat cover portion. Moreover, the depth dimension D1 (detailed later) of the recess 10 can be appropriately set according to the thickness dimension of the member to be accommodated, and the thickness dimension of the skin pieces SP1 to SP3 and the reinforcing member 20 described later can be set. Decided in consideration.

[Seat Cover]
The seat cover 6S is a surface material that constitutes the design surface of the sheet with reference to FIG. 1, and can be formed by stitching a plurality of skin pieces (first skin piece SP1 to fourth skin piece SP4, etc.) ( In FIG. 1, for convenience, a specific code is given only to the skin piece of the seating surface portion of the seat cover). Here, the material of each of the skin pieces SP1 to SP4 is not particularly limited, but can typically be formed of a fabric (woven fabric, knitted fabric, non-woven fabric) or leather (natural leather, synthetic leather). Moreover, pad materials and back base fabrics, such as urethane laminate, can also be integrated in the back side of each skin piece SP1-SP4 grade | etc.,. Here, the first skin piece SP1, the second skin piece SP2, and the third skin piece SP3 (all of which will be described in detail later) are portions that constitute the upper part of the seating surface of the seat cover 6S. Then, by the third skin piece SP3, as will be described later, the upper center of the seat cover 6S in the seat width direction is concave. Further, the fourth skin piece SP4 is a part constituting the lower part of the seating surface of the seat cover 6S, and can cover the lower part from the groove 12 of the seat pad 6P shown in FIG. The fourth skin piece SP4 has a substantially rectangular shape when viewed from the front, and the upper end side has a substantially semicircular shape following the groove 12 in FIG. 2 and gradually protrudes upward toward the center.

[First skin piece, second skin piece]
The first skin piece SP1 is a portion that forms the upper right side of the seat cover 6S with reference to FIG. Further, the second skin piece SP2 is a portion that forms the upper left side of the seat cover 6S so as to be symmetrical with the first skin piece SP1. Each of the first skin piece SP1 and the second skin piece SP2 has a substantially rectangular shape when viewed from the front, and the lower end side gradually curves upward as it goes to the center in the sheet width direction along the groove 12 in FIG. doing. The first skin piece SP1 and the second skin piece SP2 are stitched to a third skin piece SP3, which will be described later, by these seam allowances E1 and E2 with reference to FIG. The first seam allowance E1 of the first skin piece SP1 is a portion that is folded inward at the left end of the first skin piece SP1. The first seam allowance E1 is folded rightward so as to wrap around to the back side with the left end portion X1 shown in FIG. 1 of the first skin piece SP1 as a folding base point. The second seam allowance E2 of the second skin piece SP2 is a portion that is folded inward at the right end of the second skin piece SP2. The second seam allowance E2 is folded back to the left so as to wrap around to the back side with the right end portion X2 of the second skin piece SP2 as a folding base point.

[Third skin piece]
The third skin piece SP3 is a part for making the seat cover 6S partially concave with reference to FIG. 1, and a reinforcing member 20 described later is attached thereto. The third skin piece SP3 has a substantially rectangular shape in front view that is long in the vertical direction following the concave portion 10 shown in FIG. 2, and the right edge RM and the left edge LM shown in FIG. 4 extend in the vertical direction. ing. It should be noted that the third skin piece SP3 may be set to the same thickness dimension as the first skin piece SP1 or the like, or may be set to a different thickness dimension. For example, in the present embodiment, the first skin piece SP1 and the second skin piece SP2 are arranged at positions where they can easily come into contact with the seated occupant, as compared with the third skin piece SP3 arranged in a concave shape. Therefore, referring to FIG. 4, the seating property of the seat can be improved by making the thickness dimension T1 of the first skin piece SP1 (second skin piece SP2) larger than the thickness dimension T2 of the third skin piece. (In each figure, for the sake of convenience, each skin piece is shown with approximately the same thickness dimension). In addition, as a method of providing a difference in the thickness dimension of each skin piece, a method of changing the thickness dimension of the skin piece itself, the pad material or the back base fabric can be exemplified, and typically a method of changing the thickness dimension of the pad material is preferably used. be able to.

[Reinforcing material]
Referring to FIGS. 1 and 3, the reinforcing member 20 is a surface material having substantially the same shape and the same size as the third skin piece SP3, and is disposed on the back side of the third skin piece SP3 so as not to be exposed to the outside. . The reinforcing member 20 is formed of a material that is superior in surface rigidity as compared with the skin pieces SP1 to SP4 and is not easily bent and deformed in the thickness direction (front-rear direction in each figure). In the present embodiment, the rigidity of the third skin piece SP3 is increased by the reinforcing material 20, whereby the first seam allowance E1 of the first skin piece SP1 and the second seam allowance E2 of the second skin piece SP2 described later are provided. Can be defeated in the proper orientation. As a material of this type of reinforcing material 20, for example, a surface material that is superior in surface rigidity to each of the skin pieces SP1 to SP4 can be used. Specifically, the surface is thicker than the skin pieces SP1 to SP4. A material or a resin face material can be used. In this embodiment, the fiber layer, such as a nonwoven fabric or felt basis weight ^{350g / m 2 ~450g / m 2} , can be used as a reinforcing material 20. In addition, the surface rigidity (hardness of bending deformation) of the reinforcing material 20 can be expressed by, for example, bending resilience, and this bending resilience conforms to “JIS L-10968.22.1 A method”. It can be measured.

  Here, referring to FIG. 4, the width dimension W2 of the reinforcing member 20 in the left-right direction is not particularly limited as long as it can be arranged in the recess 10 of the seat pad 6P in FIG. 3, but is equivalent to the width dimension W1 of the recess 10. Or it is desirable to set a little larger. By doing so, the third skin piece SP3 and the reinforcing material 20 can be pushed into the recess 10 while being bent so as to push away the left and right inner walls 10a, 10b of the recess 10. In this embodiment, both the seam allowance E1 (E2) can be accommodated in the recess 10 together with the third skin piece SP3 and the reinforcing member 20 as will be described later. Therefore, referring to FIGS. 3 and 4, when the thickness dimension of the reinforcing member 20 is T3, the depth dimension D1 of the concave portion 10 is the third skin piece SP3, the reinforcing member 20, and each seam allowance E1 (E2). Is set to be equal to or larger than the dimension (T1 + T2 + T3) at the time of overlapping.

[Formation of seat cover]
Referring to FIGS. 1 and 4, a plurality of skin pieces SP1 to SP4 and the like are stitched to form a seat cover 6S. For example, at the upper part of the seating surface of the seat cover 6S, the first skin piece SP1, the third skin piece SP3, and the second skin piece SP2 are sewn while being arranged from right to left in this order. At this time, the third skin piece SP3 is arranged in a bridging manner between the first skin piece SP1 and the second skin piece SP2 as shown in FIG. Further, the first seam allowance E1 of the first skin piece SP1 is sewn in a middle surface shape on the right edge RM side as one edge of the third skin piece SP3 via a first stitching line SEW1 extending up and down the seat. In addition, the second seam allowance E2 of the second skin piece SP2 is sewn in a middle surface shape on the left edge LM side as the other edge of the third skin piece SP3 via a second stitching line SEW2 extending up and down the seat. A portion of the seat cover 6S is suitably recessed by sewing the seam margins E1 and E2 that are folded back and increased in thickness to the third skin piece SP3. And the lower end part of each skin piece SP1-SP3 of the seat cover 6S upper part is stitch | sutured to the upper end part of 4th skin piece SP4 which makes the seat cover 6S lower part. In this way, the seat cover 6S is created, and at the same time, a part of the seat cover 6S is made concave by the third skin piece SP3.

  By the way, in the upper part of the seat cover 6S, referring to FIGS. 1, 3 and 4, the first skin piece SP1 and the second skin piece SP2 are arranged on the left and right of the concave third skin piece SP3. And the left end part X1 used as the return | turnback base point of the seam allowance E1 of 1st skin piece SP1 is extended in the up-down direction at the right edge RM side of 3rd skin piece SP3. Also, the right end portion X2 that is the folding base point of the seam allowance E2 of the second skin piece SP2 extends in the vertical direction on the left edge LM side of the third skin piece SP3. The left end portion X1 of the first skin piece SP1 and the right end portion X2 of the second skin piece SP2 are arranged in a vertical direction while twisting so that the corresponding seam margins E1 and E2 are not evenly tilted. Will be. For this reason, in order to make a part of the seat cover 6S concave with a good design, it is necessary to maintain the folded state of the seam allowances E1 and E2 and to make the tilt direction constant. In this type of configuration, it is desirable to make a part of the seat cover 6S concave with a good design while avoiding an increase in the number of parts as much as possible.

  Therefore, in the present embodiment, with reference to FIG. 4, a planar reinforcing member 20 is attached to the back side of the third skin piece SP <b> 3 and is less likely to bend and deform than the seat cover 6 </ b> S. And with reference to FIG. 3, the 1st seam allowance E1 (2nd seam allowance E2) of the state turned back by 3rd skin piece SP3 to which the reinforcing material 20 is attached of the corresponding skin piece SP1 (SP2). It was decided to press toward the back side. That is, in this embodiment, the reinforcing material 20 is applied to the back side of the third skin piece SP3 when the seat cover 6S shown in FIG. 3 is formed. In this state, the reinforcing material 20 and the first seam allowance E1 are sewn to the right edge RM of the third skin piece SP3 with the first stitch line SEW1, and the second stitch line SEW2 to the left edge LM of the third skin piece SP3. The reinforcing member 20 and the second seam allowance E2 are sewn. And with reference to FIG. 4, the 1st seam allowance part E1 is pressed toward the back side of 1st skin piece SP1 with 3rd skin piece SP3 to which the reinforcing material 20 was attached, and it became difficult to bend in the thickness direction. The second seam allowance E2 is pressed toward the back side of the second skin piece SP2. Thus, the folded state (falling direction) of the first seam allowance E1 and the second seam allowance E2 can be appropriately maintained by pressing the third skin piece SP3 and the reinforcing material 20 without requiring an adhesive. Thus, in this embodiment, the third skin piece SP3 to which the reinforcing member 20 is attached is pressed in the vertical direction without causing the left end portion X1 of the first skin piece SP1 and the right end portion X2 of the second skin piece SP2 as much as possible. Can be placed in.

  Here, in the above-described configuration, the design surface portion of the first skin piece SP1 or the second skin piece SP2 may be wrinkled when the seat cover 6S is formed. At this time, in this embodiment, since the adhesive is omitted, the relative movement of the skin pieces SP1 and SP2 (parts constituting the design surface) corresponding to the sewing margins E1 and E2 is possible. For this reason, each skin piece SP1, SP2 can be smoothly moved relative to each seam allowance E1, E2 so as to remove wrinkles. Thus, in this embodiment, wrinkles on the design surface portion of the first skin piece SP1 or the second skin piece SP2 can be easily removed by using the reinforcing material 20 instead of the adhesive.

  Next, referring to FIG. 3, the seat cover 6S covers the seat pad 6P on the seat frame 6F. At this time, the seat pad 6P is covered while applying an appropriate tension in the surface direction of the seat cover 6S, and in this state, the concave third skin piece SP3 is positioned and arranged in the concave portion 10 of the seat pad 6P. At this time, the reinforcing material 20 is locked to the left and right inner walls 10a, 10b of the recess 10 so that the third skin piece SP3 is positioned and arranged at an appropriate position of the seat pad 6P without requiring a surface fastener. Become. In particular, in the present embodiment, the third skin piece SP3 and the reinforcing material 20 are pushed into the recess 10 while pushing the left and right inner walls 10a and 10b away from each other, so that the third skin piece SP3 is surely arranged at an appropriate position of the seat pad 6P. Can be kept. Furthermore, in this embodiment, the first seam allowance E1 and the second seam allowance E2 can be arranged in the recess 10 together with the third skin piece SP3 and the like by adjusting the depth dimension D1 of the recess 10. Thus, by arranging the seam allowances E1 and E2 in the recessed part 10, it is possible to avoid the occurrence of unintended convex parts of the seat cover 6S caused by the seam allowances E1 and E2 as much as possible.

  As described above, in the present embodiment, the folded state of the first seam allowance E1 and the second seam allowance E2 is maintained by pressing the third skin piece SP3 to which the reinforcing material 20 is attached, without requiring an adhesive. I can keep it. Further, by omitting the adhesive as in this embodiment, the relative movement of the skin pieces SP1 and SP2 corresponding to the seam margins E1 and E2 becomes possible. For this reason, even if the skin pieces SP1 and SP2 are wrinkled when the seat cover 6S is formed, the wrinkles of the skin pieces SP1 and SP2 can be removed relatively easily. Further, in this embodiment, the third skin piece SP3 forming the concave seat cover portion can be disposed at an appropriate position of the seat pad 6P without requiring a hook-and-loop fastener by locking the reinforcing member 20 to the concave portion 10. . At this time, by pushing the third skin piece SP3 and the reinforcing material 20 into the recess 10, the third skin piece SP3 can be surely arranged at an appropriate position of the seat pad 6P. Further, since the first seam allowance E1 and the second seam allowance E2 are arranged in the recess 10 of the seat pad 6P together with the third skin piece SP3, the seat cover 6S is unintentionally convex at each seam allowance E1 and E2. It can be avoided as much as possible. Therefore, according to the present embodiment, it is possible to make a part of the seat cover 6S concave with a good design while avoiding an increase in the number of parts as much as possible.

[Modification]
Here, the attachment method of the reinforcing member 20 to the third skin piece SP3 can take various configurations in addition to the above-described configuration. For example, in this modification, with reference to FIG. 5, the reinforcing material 20 can be attached to the third skin piece SP3 before the first skin piece SP1, the second skin piece SP2 and the third skin piece SP3 are stitched. For example, in a state where the reinforcing material 20 is stacked on the back side of the third skin piece SP3, the third skin piece SP3 and the right end side of the reinforcing material 20 are stitched together by the third sewing line SEW3, and the fourth skin piece SP4 and the reinforcing material 20 The left end side of is sutured with a third suture line SEW3. Then, the first seam allowance E1 is stitched to the right edge RM of the third skin piece SP3 via the first suture line SEW1 in a middle surface shape. At this time, the first suture line SEW1 is placed on the left side of the third suture line SEW3. Form. Further, the second seam allowance E2 is sewn to the left edge LM of the third skin piece SP3 via the second suture line SEW2 in a middle surface shape. At this time, the second suture line SEW2 is placed on the right side of the fourth suture line SEW4. Form. And the 1st skin piece SP1-the 3rd skin piece SP3 are expand | deployed in the planar shape shown in FIG. 5, and the 3rd suture line SEW3 (4th suture line SEW4) is made into the back side of corresponding skin piece SP1 (SP2). It can be set as the structure which arrange | positions and is not exposed outside. In this modification, the positioning work at the time of forming the seat cover 6S can be omitted by attaching the reinforcing member 20 to the third skin piece SP3 in advance. Further, the reinforcing member 20 can be attached to the third skin piece SP3 relatively firmly by the first suture line SEW1 to the fourth suture line SEW4.

  The vehicle seat of the present embodiment is not limited to the above-described embodiment, and can take other various embodiments. In the present embodiment, the configuration (shape, dimensions, number of arrangement, arrangement position, attachment method, etc.) of the third skin piece SP3 and the reinforcing material 20 is exemplified, but the configuration of these members is not intended to be limited. For example, the configuration of the reinforcing material can be set as appropriate according to the configuration of the third skin piece, and may have a shape and dimensions different from those of the third skin piece. In addition, as a method for attaching the reinforcing material to the third skin piece, a method such as adhesion, fusion, and adhesion, a physical method using a suture line, a staple or the like can be exemplified, and further, when molding a resin-made reinforcing material It can also be integrated with the third skin piece. Also, the stitching method of the first skin piece, the second skin piece, and the third skin piece can be appropriately changed. For example, in the present embodiment, the configuration in which the first suture line, the second suture line, and the like are not exposed on the design surface of the sheet has been described. However, at least one of the suture lines can be exposed on the design surface of the sheet.

  In the present embodiment, the third skin piece SP3, the reinforcing member 20, and the seam allowances E1 and E2 are positioned and arranged in the concave portion 10, but these arrangement methods are not intended to be limited. For example, only the third skin piece and the reinforcing material can be accommodated in the recess, and each seam allowance can be arranged outside the recess. Further, only the reinforcing material can be housed in the recess, and the third skin piece and each seam allowance can be arranged outside the recess. Further, the width dimension of the recess can be made larger than the width dimension of the reinforcing material, and even in this case, since the reinforcing material is locked to the inner wall of the recess, the third skin piece is extremely displaced from the recess. This can be avoided as much as possible. In addition, a 3rd skin piece and a reinforcing material can also be attached to a recessed part through members, such as a hook-and-loop fastener. In addition, a plurality of recesses or a plurality of recesses can be provided at appropriate positions on the seat pad in consideration of the design of the sheet. When providing a plurality of recesses, the third skin piece and the reinforcement are provided in at least one of the plurality of recesses. Material can be placed.

  Moreover, although the configuration (shape, dimensions, constituent members, etc.) of the vehicle seat 2 is illustrated, the configuration of the vehicle seat is not intended to be limited. In this embodiment, the seat back has been described as an example, but the configuration of the present invention can be applied to various seat components such as a seat cushion and a headrest. And the structure of this embodiment is applicable to vehicle seats, such as a vehicle, an aircraft, and a train.

2 Vehicle Seat 4 Seat Cushion 6 Seat Back 8 Headrest 6F Seat Frame 6P Seat Pad 6S Seat Cover 10 Recess 12 Groove 20 Reinforcing Material SP1 First Skin Piece SP2 Second Skin Piece SP3 Third Skin Piece SP4 Fourth Skin Piece E1 First First seam allowance E2 of the first skin piece Second seam allowance RM of the second skin piece Right edge of the third skin piece (one edge of the present invention)
LM Left edge of the third skin piece (other edge of the present invention)
X1 Left end portion X2 of the first skin piece Right end portion SEW1 of the second skin piece SEW1 First suture line SEW2 Second suture line

Claims (4)

A seat pad that can elastically support an occupant, and a seat cover that covers the seat pad and forms a design surface of the seat;
At least a part of the seat cover is formed of a first skin piece, a second skin piece, and a third skin piece bridged between the first skin piece and the second skin piece,
The third skin piece is disposed on the seat pad side as compared to the first skin piece and the second skin piece, and the first skin piece is folded on one edge side of the third skin piece. In the vehicle seat, the first seam allowance portion is sewn, and the second seam allowance portion folded back of the second skin piece is sewn to the other edge side opposite to one edge of the third skin piece,
On the back side of the third skin piece, a planar reinforcing material that is less likely to bend and deform than the seat cover is attached, and is folded by the third skin piece to which the reinforcing material is attached. The vehicle seat in which the first seam allowance and the second seam allowance are pressed toward the back side of the corresponding skin piece.   The vehicle seat according to claim 1, wherein the reinforcing material is disposed to be locked to a recess of the seat pad.   The vehicle seat according to claim 2, wherein the third skin piece to which the reinforcing material is attached is pushed into the recess. The vehicle seat according to claim 3, wherein the first seam allowance and the second seam allowance are disposed in the recess together with the reinforcing material.

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