JP5600024B2 - Seat material and vehicle seat and recovery seat using the seat material - Google Patents

Description

  The present invention relates to a sheet material, and more specifically, to a sheet material used for a cover sheet of a vehicle seat used in a vehicle such as an automobile or a cover sheet for covering the vehicle seat.

  Conventionally, various sheet materials have been used for a cover sheet for a vehicle seat or a cover sheet for covering a vehicle seat. Here, the skin is a plurality of fabrics cut and sewn into a predetermined shape and attached to the outer surface of the vehicle seat by sewing, or a stapler needle is attached by a tucker or the like. A member made of a sheet material attached by a known attachment means such as a J hook, and a recover sheet is a member made of a sheet material attached so as to cover the skin for the purpose of cosmetic use or prevention of dirt. Say.

  In addition, the fabric of the sheet material used for the outer cover and the recover sheet is formed by stitching the lining to the outer cover, and when sewing is performed using a normal sewing machine such as a general sewing machine, the sewing needle moves up and down. As a result, the sheet material bends in the raising / lowering direction of the sewing needle. When sewing is performed in a state where the sheet material is bent as described above, there is a problem in that the fabric seats and wrinkles occur and the appearance of the vehicle seat deteriorates. In order to solve this problem, as shown in FIG. 12, an elastic wadding material 153 such as highly foamed soft urethane is provided on the back side of the outer surface 151, and further, a lining 152 is provided, and the wadding is performed between the outer surface 151 and the lining 152. A sheet material having a three-layer structure in which a material 153 is sandwiched is widely used. As described above, since the conventional sheet material includes the wadding material 153, it is possible to remove the surface stains and wrinkles caused by the vertical movement of the sewing needle 60 by the elastic force of the wadding material 153. Furthermore, since the wading material 153 has a large friction with the sewing machine, smooth cloth feeding when automatic sewing with the sewing machine is hindered. In order to prevent this, the lining 152 is further provided and automatic sewing with the sewing machine is provided. Smooth cloth feeding was realized.

  Thus, since the sheet material having a three-layer structure that has been widely used conventionally uses urethane as a wading material, carbon dioxide is discharged during production, which causes a serious problem from the viewpoint of environmental protection. In addition, there is a problem that the urethane hydrolyzes due to use over time, and the generation of off-flavors and mold occurs. Further, since urethane is not thermoplastic, it is difficult to recycle, and there is a problem that it cannot be easily treated as industrial waste when it is treated as waste material.

  Furthermore, the sheet | seat material described in patent document 1 is known as a sheet | seat material which does not use a wadding material. The sheet material described in Patent Document 1 is configured in a two-layer structure in which a surface material and an interlining material are bonded via an adhesive without using a wadding material.

  Thus, since the sheet material having a two-layer structure does not include a wadding material made of urethane or the like, problems such as environmental protection associated with the manufacture and disposal of the sheet material, and generation of a foul odor or mold due to hydrolysis occur. In addition, since the outer material and the interlining are pasted through an adhesive, problems such as the occurrence of wrinkles and wrinkles due to sewing did not occur.

JP 2010-17309 A

  However, since the sheet material having a two-layer structure described in Patent Document 1 requires a drying time of the adhesive at the time of manufacturing, the manufacturing process takes time and the manufacturing cost cannot be suppressed. There was a possibility that peeling would occur. In addition, in order to hold the body of the occupant seated in the vehicle seat in the left-right direction, a so-called bucket-type seat is provided that has a support portion that is raised at the left and right ends of the seat and has a recess on the outer surface of the vehicle seat. In this case, since the seat material is attached to the vehicle seat with a predetermined tension, the seat material is lifted from the depression of the vehicle seat, the seat material does not fit the vehicle seat, and the appearance is adversely affected. There was a problem of losing the feeling.

  Conventionally, when a seat material is used as the skin of the vehicle seat, a hook ring 160 is provided between the cushion material 108 and the support portion 108a as shown in FIG. 13, and the skin 113 is engaged with the hook ring 160. Thus, the above-described sheet material is prevented from being lifted. As another structure, as shown in FIG. 14, the cushion material 108 ′ and the support portion 108 a ′ are made of different members, and the skin 113 is sandwiched between the cushion material 108 ′ and the support portion 108 a ′. . As shown in FIGS. 13 and 14, the end of the skin 113 is fixedly attached to the vehicle seat by a stapler needle 161 being driven by a tacker or the like into an inconspicuous location such as the back side of the vehicle seat. Thus, since the skin 113 of the vehicle seat is attached with a complicated structure and method, the skin 113 cannot be easily replaced according to damage to the skin 113 or the user's preference. When the skin 113 is replaced, there is a problem that it is difficult to suppress the installation cost associated with the replacement.

  The present invention has been made to solve the above-described problems, and even when applied to a bucket type vehicle seat, the present invention does not impair the sense of quality by fitting into the recess of the vehicle seat with a simple configuration. It is an object of the present invention to provide a seat material and a vehicle seat or a recover seat using the seat material.

  In addition, the present invention does not cause problems such as environmental odors and the generation of strange odors and molds due to hydrolysis, and does not cause the occurrence of sheet material creaking or wrinkles due to sewing. It is an object of the present invention to provide a seat material capable of suppressing the manufacturing cost accompanying the reduction, and a vehicle seat or a recover seat using the sheet material.

The seat material according to the present invention includes a backrest portion and a seating portion provided with a support portion formed in a shape in which both end portions in the width direction are raised, and the backrest portion is an occupant seated on the seating portion from one end of the seating portion. In a sheet material formed by sewing a plurality of fabrics draped in accordance with the shape of a vehicle seat attached so as to extend opposite the back surface, the fabric extends along a stitched line where the fabric is sewn. The suture line is located at a base point of the support part and extends in the longitudinal direction of the backrest part and the seating part .

  In the sheet material according to the present invention, the shape restoration member is formed in a shape corresponding to the uneven shape of the surface to be attached, and is restored to a shape corresponding to the uneven shape by being extended or bent. It is preferable to have a restoring force.

  Furthermore, in the sheet material according to the present invention, the shape restoring member includes a restoring action portion extending along the suture line, and a stitching portion extending in a direction intersecting the suture line from one end of the restoration action portion. Are preferably provided.

  Still further, in the sheet material according to the present invention, it is preferable that the restoring action part is formed in a substantially cylindrical shape, and the stitching part extends in a tangential direction in an axial section of the restoring action part. .

  Moreover, the sheet | seat material which concerns on this invention WHEREIN: It is suitable when the said restoring action part is sewn simultaneously with the sewing of the said fabric.

  Further, in the sheet material according to the present invention, the fabric is formed in a two-layer structure composed of a front material and a lining material, and in the sewing process for sewing the outer material and the lining material, a squeeze removal that removes a squeak caused by sewing is removed. It is preferable to further include a step.

  Furthermore, in the sheet material according to the present invention, it is preferable to use a needle feed type sewing machine in which the sewing needle can move along the feed direction of the fabric.

  Still further, in the sheet material according to the present invention, it is preferable that the crease removing step includes a tension unit that applies a tensile force along the feeding direction of the fabric.

  In addition, it is preferable that the seat according to any one of claims 1 to 8 is used for the recover sheet according to the present invention in a recover sheet that covers a vehicle seat.

  Furthermore, in the vehicle seat according to the present invention, it is preferable that the seat material according to any one of claims 1 to 8 is used for a skin of the vehicle seat.

  According to the present invention, since the plurality of fabrics are provided with the shape restoring member that extends along the stitched line, the seat material can be fitted into the recess of the vehicle seat by the restoring force of the shape restoring portion. It is possible to create a high-class feeling without impairing the appearance of the vehicle seat. Furthermore, since it can fit into the recess of the vehicle seat without using a hook ring or a J hook, the seat material can be easily replaced, so that the cost can be suppressed and the convenience of the sheet material replacement Can be improved.

  In addition, the seat material according to the present invention and the vehicle seat or the recover seat using the seat material have a two-layer structure that does not include a wadding material. There is no problem of off-flavor or mold. In addition, since the fabric used for the sheet material according to the present invention includes a crease removal step in the sewing process, the occurrence of crease and wrinkles due to sewing does not occur, and the rigidity of the sheet material is improved by sewing. You can also plan.

It is a perspective view which shows the vehicle seat to which the recover seat which concerns on 1st Embodiment is attached. It is a disassembled perspective view for demonstrating the structure of the vehicle seat to which the recover seat which concerns on 1st Embodiment is attached. It is a perspective view which shows the recover sheet which concerns on 1st Embodiment. It is a perspective view which shows the shape restoration member of the recover sheet which concerns on 1st Embodiment. It is a figure which shows the stitching | suture part of the recover sheet which concerns on 1st Embodiment. It is a longitudinal cross-sectional view along the suture line for demonstrating the attachment state by the side of the backrest of the recover sheet which concerns on 1st Embodiment. It is width direction sectional drawing for demonstrating the attachment state by the side of the backrest of the recover sheet | seat which concerns on 1st Embodiment. It is a longitudinal cross-sectional view along the sewing line for demonstrating the attachment state by the side of the seating of the recovery sheet which concerns on 1st Embodiment. It is a figure for demonstrating the structure of the sheet | seat material used for the recover sheet which concerns on 1st Embodiment. It is a figure for demonstrating the vehicle seat which concerns on 2nd Embodiment. It is a width direction sectional view for explaining the attachment state of the skin of the vehicular seat concerning a 2nd embodiment. It is a figure for demonstrating the structure of the conventional sheet | seat material. It is a figure for demonstrating the attachment method of the skin of the conventional vehicle seat. It is a figure for demonstrating the attachment method of the skin of the conventional vehicle seat.

  Hereinafter, a seat material according to the present invention and a vehicle seat or a recover seat using the seat material will be described with reference to the drawings. The following embodiments do not limit the invention according to each claim, and all combinations of features described in the embodiments are not necessarily essential to the solution means of the invention. Absent.

[First Embodiment]
FIG. 1 is a perspective view showing a vehicle seat to which a recover sheet according to the first embodiment is attached, and FIG. 2 illustrates a structure of the vehicle seat to which a recover sheet according to the first embodiment is attached. 3 is an exploded perspective view, FIG. 3 is a perspective view showing a recover sheet according to the first embodiment, and FIG. 4 is a perspective view showing a shape restoring member of the recover sheet according to the first embodiment. FIG. 5 is a view showing a stitched portion of the recover sheet according to the first embodiment, and FIG. 6 is a suture line for explaining the attachment state of the back side of the recover sheet according to the first embodiment. FIG. 7 is a cross-sectional view in the width direction for explaining the attachment state of the backrest side of the recover sheet according to the first embodiment, and FIG. 8 is a cross-sectional view in the first embodiment. Recovery related to FIG. 9 is a longitudinal sectional view taken along a suture line for explaining the attachment state of the seat on the seat side, and FIG. 9 is a diagram for explaining the structure of the sheet material used for the recover seat according to the first embodiment. It is.

  First, the vehicle seat 1 to which the recover sheets 11 and 21 according to the present embodiment are attached will be described with reference to FIGS. As shown in FIG. 1, the vehicle seat 1 includes a backrest portion 10, a seating portion 20, and a headrest portion (not shown), and the backrest portion 10 is seated from one end of the seating portion 20 via a reclining mechanism 7. It is attached so as to extend opposite the back of the occupant seated on the seat 20, and is attached to the seat portion 20 so that the reclining adjustment is possible.

  Further, the backrest 10 and the seating portion 20 have support portions 10a formed in a shape in which both end portions in the width direction are raised so that the body of the occupant seated on the vehicle seat 1 can be held in the left-right direction. 20a, and outer skins 13 and 23 are attached to the outer surface with a predetermined tension. Thus, by forming the support portions 10a and 20a, the vehicle seat 1 is formed as a bucket-type seat having a depression on the outer surface.

  Further, as shown in FIG. 2, the vehicle seat 1 has cushion members 8 and 9 attached to a frame 2 composed of a backrest side frame 3 to which a headrest mounting portion 6 is attached and a seating side frame 4 and a side frame 5. Configured. Each of the backrest side frame 3 and the seating side frame 4 is a substantially rectangular annular frame of a metal pipe, and is bridged and attached between the side frames 5.

  The cushion materials 8 and 9 include support portions 8a and 9a having the same shape in order to form the shapes of the support portions 10a and 20a described above, and a polypropylene bead foam, a polyethylene bead foam, a polypropylene foam, It is formed by three-dimensionally molding a foam having elasticity such as a polyethylene foam, an acrylonitrile / styrene resin foam, an ethylene vinyl acetate copolymer resin, and a urethane foam material.

  The back frame 3 and the seat frame 4 are attached via a reclining mechanism 7 so that the reclining mechanism can be adjusted, and the side frame 5 is connected to a vehicle interior floor surface through a riding position adjusting mechanism including a seat rail. By being attached, the vehicle seat 1 is attached so as to be movable along the front-rear direction of the passenger compartment, and the riding posture of the occupant can be adjusted.

  Next, the recovery sheets 11 and 21 according to the present embodiment will be described with reference to FIGS. As shown in FIG. 3, the recover sheets 11, 21 according to the present embodiment are formed by sewing a plurality of fabrics 50 that are three-dimensionally cut according to the shapes of the backrest 10 and the seat 20. Thus, it is formed in the substantially bag shape so that the backrest part 10 and the seating part 20 can be coat | covered by sewing the some fabric 50 cut | disconnected by the three-dimensional cutting. Further, as shown in FIG. 4, the recovery sheets 11 and 21 have stitched lines formed at the boundary where the fabrics 50 are stitched by sewing a plurality of the fabrics 50. The shape restoration member 40 is stitched to the suture line 30 that is located at the starting point of the support portions 10a, 20a of the vehicle seat 1 and extends in the longitudinal direction of the backrest portion 10 and the seating portion 20.

  In addition, as shown in FIG. 3, the back seat side recovery sheet 11 has a chuck 12 as an attachment means for covering the back rest portion 10 at the bag-like opening end, and is attached to the seat side recovery sheet. The J-hook 22 is attached to the open end of the bag.

  Next, the shape restoring means 40 will be described with reference to FIG. The shape restoring member 40 includes a restoring action part 41 formed extending in the longitudinal direction, and a stitching part 42 extending in a tangential direction in the axial section of the restoring action part 41. The shape restoration member 40 is formed of a polyester resin such as polyethylene terephthalate having a predetermined elastic force. Furthermore, since the shape restoration member 40 is formed to bend into a shape corresponding to the concave and convex shape of the surface of the vehicle seat 1 and the support portions 10a and 20a, the shape restoration member 40 is extended or bent. When it is deformed by this, it has a restoring force to restore to a predetermined shape before the deformation.

  The restoring action part 41 is formed in a cylindrical shape having an axis along the longitudinal direction, and the shape having the round cross section increases the sectional secondary coefficient of the restoring action part 41 and increases the bending moment and bending rigidity. Can exert a stronger restoring force. Further, since the stitching portion 42 functions as a seam allowance when the shape restoration member 40 is sewn to the fabric 50, it does not need to be formed continuously in the longitudinal direction, and extends discontinuously with an appropriate interval. It doesn't matter. In this way, when the suture part 42 is discontinuously extended, the suture part 42 is bent at a particularly large part of the curved shape of the shape restoration member 40, and the restoring force of the restoration action part 41 is inhibited. The bending of the stitching portion 42 can be absorbed by the discontinuous portion, and the restoring force of the restoring action portion 41 can be effectively applied without causing the bending. Further, even when such bending occurs, for example, by adjusting the diameter of the restoring action portion 41 in the part, the stitched portion can be adjusted without adjusting the restoring force by adjusting the sectional secondary coefficient locally. It is also possible to adjust so as to generate a necessary restoring force simply by forming notches in 42 and discontinuously forming them.

  Further, the shape restoring member 40 is formed by linearly injection-molding a resin material as a raw material, and then, by heating, the shape is restored to a shape corresponding to the uneven shape of the vehicle seat 1 and is cooled in that state to be a curved shape. Is formed. Alternatively, a curved shape can be formed by injection molding a resin material, which is a raw material, into a predetermined shape on a curved mold.

  Next, with reference to FIGS. 6 to 8, a method of attaching the recover sheets 11 and 21 according to the present embodiment will be described. As shown in FIG. 6, the recovery sheet 11 on the backrest side formed in a substantially bag shape is attached so as to cover the backrest portion 10, and the opening end is closed by a chuck 12 attached to the opening end. A predetermined tension is applied in the direction L1. By attaching the recover sheet 11, the shape restoration member 40 sewn along the suture line 30 is expanded and deformed in the longitudinal direction L1. As described above, the shape restoring member 40 has a restoring force F1 that restores to a predetermined shape before the deformation, so that the recovery sheet 11 can be attached along the recess of the backrest portion 10 by this restoring force F1, It is possible to prevent the recovery sheet 11 from being lifted in the depression and to bring out a high-class feeling without impairing the appearance of the vehicle seat 1.

  Further, as shown in FIG. 7, in the width direction of the vehicle seat 1, the shape restoring member 40 is held so as to bite into the recess between the backrest portion 10 and the support portion 10 a, so that the recover seat 11 is There is no misalignment in the width direction.

  Further, as shown in FIG. 8, the seat-side recover sheet 21 according to the present embodiment has the opening end engaged with one end of the seating portion 20 and the J hook 22 is engaged with the other end in the longitudinal direction. L2 is attached with a predetermined tension. Accordingly, the seat-side recover seat 21 can be attached along the recess of the seat portion 20 by the restoring force F2 in the same manner as the seat back-side recover seat 11, and the seat-side recover seat 21 can be prevented from being lifted. A high-class feeling can be created without impairing the appearance of the sheet 1. Furthermore, if attached in this way, the seat-side recover seat 21 can be easily attached without interfering with the seat rails or the like disposed below the seating portion 20, and the boarding position adjusting mechanism for the vehicle seat 1 can be provided. There is no hindrance. Note that, as with the backrest-side recover seat 11, the seat-side recover seat 21 is held so as to bite into the recess in the width direction of the vehicle seat 1, so that there is no displacement in the width direction.

  Next, with reference to FIG. 9, the fabric 50 used for the recover sheets 11 and 21 according to the present embodiment will be described. As shown in FIG. 9, the fabric 50 used in the recover sheets 11 and 21 according to the present embodiment has a surface 51 having a decorative surface that forms the outer surface of the recover sheets 11 and 21, and is more elastic than the surface 51. It is formed in a two-layer structure by stitching the outer fabric 51 and the lining 52 with a thread made of a polyester resin. Both the outer material 51 and the lining material 52 are made of polyester resin such as polyethylene terephthalate. As described above, since the recover sheets 11 and 21 according to the present embodiment are all formed of the thermoplastic polyester-based resin including the shape restoration member 40, they can be collectively processed into a pellet and recycled. And environmental problems arising from the disposal of industrial waste do not occur.

  Further, in the sewing process for sewing the outer material 51 and the lining material 52, a crease removal process is provided. In the crease removal step, the presser 61 is fixed, and the sewing needle 60 is sewn using a needle feed type sewing machine that is provided so as to be movable back and forth together with a feed dog that feeds the outer material 51 and the lining 52 in the feed direction X. The As described above, when the needle feed type sewing machine in which the sewing needle 60 and the feed dog move together is used, even if the cloth is difficult to feed, there is no misalignment in sewing, so that the fabric 50 can be prevented from being twisted or wrinkled.

  When the sewing process is performed with a normal general sewing machine, the stitching removal process is performed by using the tension means that pulls the fabric 50 in the feed direction X, so that the fabric 50 is free of blemishes and wrinkles. Sewing can be performed without occurring.

  Thus, since the fabric 50 used for the recover sheets 11 and 21 according to the present embodiment includes a crease removal process in the sewing process of the outer fabric 51 and the lining 52, the conventional three-layer structure sheet material Since the occurrence of wrinkles and wrinkles can be prevented without using the wadding material used in the above, cost reduction associated with the reduction of the wadding material can be realized. Further, since the outer material 51 and the lining material 52 are stitched with a thread to form a two-layer structure, the rigidity is high, and problems such as peeling and displacement between the outer material 51 and the lining material 52 do not occur.

  As for the recover sheets 11 and 21 according to the first embodiment described above, the case where the sheet material according to the present invention is used as the recover sheets 11 and 21 has been described. However, the sheet material according to the present invention can also be used as a skin of a vehicle seat. Then, the case where the sheet | seat material of this invention is used as a skin of a vehicle seat next is demonstrated. Note that, in the vehicle seat according to the second embodiment, the same members as those described in the above-described recovery seat are denoted by the same reference numerals in the drawings, and detailed description thereof is omitted.

[Second Embodiment]
FIG. 10 is a view for explaining the vehicle seat according to the second embodiment, and FIG. 11 is a cross-sectional view in the width direction for explaining the attachment state of the skin of the vehicle seat according to the second embodiment. FIG.

  As shown in FIG. 10, the vehicle seat 1 a according to the second embodiment has a three-dimensional structure of a fabric 50 formed in a two-layer structure in a sewing process that includes a step of removing the outer fabric 51 and the lining 52. The sheet material formed by cutting and sewing is used for the skin 13a on the backrest side and the skin 23a on the seating side. The skins 13a and 23a are formed in a substantially bag shape by sewing a plurality of fabrics 50, and a suture line is formed at the boundary where these fabrics 50 are stitched. A shape restoration member 40 is stitched to a suture line 30a that is located at the starting point of the support portions 10a and 20a of the vehicle seat 1 and extends in the longitudinal direction of the backrest portion 10 and the seating portion 20.

  Further, as shown in FIG. 11, the skins 13 a and 23 a are attached so as to cover the cushion materials 8 and 9, and for example, a backrest portion 10 and a seating portion 20 are provided so as to apply tension in the longitudinal direction. It is attached so that the opening end is closed at the opposite position.

  Thus, by attaching the skins 13a and 23a so as to apply tension in the longitudinal direction, the shape restoration member 40 is extended or bent in the same manner as the recovery sheets 11 and 21 according to the first embodiment described above. Deformation is generated, and a restoring force F3 is generated by this deformation. This restoring force F3 can prevent the skins 13a, 23a from being lifted from the recess of the vehicle seat 1a, so that a high-class feeling can be created without using a mounting means such as a hook ring in the recess as in the prior art. Since the number of parts can be reduced, the manufacturing cost can be suppressed.

  Moreover, about the width direction of the skins 13a and 23a, since the shape restoration member 40 is hold | maintained so that it may bite into the hollow between the cushion materials 8 and 9 and the support parts 8a and 9a, the skins 13a and 23a are located in the width direction. There will be no misalignment.

  As described above, when the seat material is used as the skin of the vehicle seat, a mounting member such as a hook ring for fixing the skin to the recess of the cushion material can be reduced, and the vehicle seat in which the skins 13a and 23a can be easily attached. Can be obtained. In addition, since the vehicle seat in which the skins 13a and 23a are fitted to the cushion materials 8 and 9 can be obtained without using a mounting member such as a hook ring, the skin can be easily replaced, and the dirt on the skin and the It is possible to easily change the epidermis according to your preference. In addition, since the skins 13a and 23a can be easily replaced, the skins can be easily replaced at an automobile dealer or a service factory, and the vehicle seats can be provided with a wide variety of color variations at low cost. This contributes to improving the attractiveness of automobiles with vehicle seats.

  In addition, in the conventional vehicle seat, the skin is attached to the vehicle seat using a tucker or the like while being attached to an attachment member such as a hook ring using a dedicated tool or jig. Since the number of members can be reduced, it is possible to easily perform the re-covering operation of the skin according to the dirt on the skin or the occupant's preference without using a dedicated tool or jig.

  As mentioned above, although preferred embodiment of this invention was described, the technical scope of this invention is not limited to description of the said embodiment. Various modifications or improvements can be added to the embodiment.

  For example, in the first embodiment, the case where the backrest side recovery sheet 11 is attached using the chuck 12 and the seating side recovery sheet 21 is attached using the J hook 22 has been described. The attachment method of 21 is not limited to these, and the opening end portions of the recovery sheets 11 and 12 may be attached with Velcro, or may be fixed with button fastenings, or when it is desired to attach firmly The opening end may be sewn and attached.

  Moreover, in the said 2nd Embodiment, although the case where it attached so that the outer skins 13a and 23a may be covered over the perimeter of the cushioning materials 8 and 9 was demonstrated, the edge part of the outer skins 13a and 23a is a vehicle seat. A stapler needle may be driven in and attached to an inconspicuous part such as the lower part of the lens.

  Furthermore, in the said 1st and 2nd embodiment, although the case where the polyethylene terephthalate was used as a material of a sheet material was demonstrated, the material of a sheet material is not restricted to this, A polytrimethylene terephthalate, a polybutylene terephthalate, polyethylene Various polyester resins such as naphthalate and polybutylene naphthalate can be used.

  Furthermore, in the first and second embodiments, the shape restoring member 40 is located at the starting point of the support portions 10a, 20a of the vehicle seat 1, 1a and in the longitudinal direction of the backrest portion 10 and the seating portion 20. The case where a total of two stitches are sewn to the extended suture line 30 has been described. However, the shape restoring member only needs to be able to apply a restoring force so that the recover sheet or the skin does not rise in the recess of the vehicle seat. If a force can be obtained, it may not be attached in the longitudinal direction, and for example, it may be sewn only at the deepest position of the recess. Furthermore, when the restoring force is insufficient, the number of shape restoring members can be increased to obtain an appropriate restoring force.

  In the first and second embodiments, the skin and the recover seat of the vehicle seat for the front seat of the vehicle have been described. However, the seat material according to the present invention is applied to any seat of the vehicle. For example, it may be applied to the skin and the recover seat of the rear seat and the auxiliary seat. Furthermore, the present invention is not limited to automobiles, and may be applied to a cushion covering the seat surface of a household sofa or chair or a cover covering the seat surface.

  It is apparent from the description of the scope of claims that embodiments with such changes or improvements can be included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1,1a Vehicle seat, 2 frame, 3 backrest side frame, 4 seating side frame, 5 side frame, 6 headrest attachment part, 7 reclining mechanism, 8,9 cushion material, 8a, 9a support part, 10 backrest part, 11 Recover sheet (back side), 12 chuck, 13, 13a, 113 skin (back side), 20 seating part, 21 recover seat (seat side), 22 J hook, 23, 23a skin (seat side), 30, 30a suture Line, 40 shape restoration member, 41 restoration action part, 42 stitching part, 50 fabric, 51,151 outer material, 52,152 lining, 60 sewing needle, 153 wadding material, 160 hook ring, 161 stapler needle.

Claims (10)

A backrest portion and a seating portion including a support portion formed in a shape in which both end portions in the width direction are raised, and the backrest portion extends from one end of the seating portion so as to face a back surface of an occupant seated on the seating portion. In the sheet material formed by sewing a plurality of fabrics that have been draped according to the shape of the vehicle seat attached as described above ,
A shape restoration member extending along a suture line where the fabric is sewn ;
The sheet material according to claim 1, wherein the suture line is located at a base point of the support part and extends in a longitudinal direction of the backrest part and the seating part . The sheet material according to claim 1,
The shape restoration member is formed in a shape corresponding to the uneven shape of the surface to be attached, and has a restoring force to be restored to the shape corresponding to the uneven shape by being stretched or bent. Sheet material. In the sheet material according to claim 2,
The shape restoring member includes a restoring action portion extending along the suture line, and a stitching portion extending in a direction intersecting the suture line from one end of the restoration action portion. . In the sheet material according to claim 3,
The restoring action part is formed in a substantially cylindrical shape,
The said stitching | suture part is extended in the tangential direction in the axial cross section of the said restoring action part, The sheet | seat material characterized by the above-mentioned. In the sheet material according to claim 1,
The sheet material characterized in that the restoring action part is sewn simultaneously with the sewing of the fabric. In the sheet material according to any one of claims 1 to 5,
The fabric is formed in a two-layer structure consisting of a surface and a lining
In the sewing process which sews the said outer material and the said lining, it further has a crease removal process which removes the crease which arises by sewing. In the sheet material according to claim 6 ,
The sheet material characterized by using a needle feed type sewing machine in which a sewing needle can move along the direction of feeding the cloth. In the sheet material according to claim 6 or 7 ,
The sheet material is characterized by comprising a tension means for applying a tensile force along the feeding direction of the fabric. In the recovery seat that covers the vehicle seat,
A recover sheet, wherein the sheet material according to any one of claims 1 to 8 is used. In vehicle seats,
The vehicle seat according to any one of claims 1 to 8, wherein the seat of the vehicle seat is used.

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