JP6511254B2 - Vehicle seat and method of manufacturing the same - Google Patents

Description

  The present invention relates to a vehicle seat such as a passenger car or a railway vehicle and a method of manufacturing the same, and more particularly to a vehicle seat having an accent line formed on a seat cover and a method of manufacturing the same.

  In the seat back of a vehicle seat such as a passenger car or a railway vehicle, and a seat cover for covering a cushion seat, a step is provided in a sewn portion of the seat side portion to improve the appearance of the seat appearance.

  As a method of forming such a seat cover, in Japanese Patent Application Laid-Open No. 2005-110946 (Patent Document 1), the terminals are aligned after overlapping the terminals so that the surface sides of the two skin materials face each other, and then the terminal portion is In the structure of a seat cover formed by stitching and folding one surface material, a locking member is attached at a position corresponding to the back surface of one end portion of the surface material or the back surface of the end portion, and the back surface of the folded surface material An arrangement is disclosed for locking in the corresponding position.

  JP-A-2014-8320 (Patent Document 2) describes that two skin materials are sewn together and embedded in a groove formed in a seat back to form a seat cover.

JP 2005-110946 A JP, 2014-8320, A

  The seat cover of a vehicle seat such as a passenger car or a railway vehicle, and a seat cover for covering a cushion seat are formed as an accent line, for example, a line formed by sewing different types of seat cover materials on the seat cover surface. Processing is applied to improve the texture.

  The accent line of the seat cover is required to be flat or concave without a convex step because the back and legs of a person sitting on the seat hit.

  Furthermore, the accent lines of the seat cover are not always formed in a straight line, and may be displayed on a graceful curve.

  In the method of forming the seat cover described in Patent Document 1, the seams of the two skin materials appear as a step on the surface of the seat cover, and the back and legs of the person sitting on the seat hit. It is not possible to satisfy the condition that there is no convex level difference and the surface is formed flat or concave.

  On the other hand, in the method of forming a seat cover described in Patent Document 1, the condition that a person sitting on a sheet hits the back and legs of a seat and forms a flat or concave shape without convex steps You can. However, in the case of forming the accent line in a curved shape, a dedicated jig is required to embed a stitched portion of the two skins in a curved groove formed in the seat back. As a result, it is necessary to replace the embedding jig for every different curve shape of the accent line, and when forming many kinds of accent lines, it takes a lot of time for setup replacement of the embedding jig, and production Become a bottleneck in raising the efficiency of

  The present invention solves the problems of the prior art described above and provides a vehicle seat provided with a seat cover that can cope with accent lines of various shapes without reducing the production efficiency, and a method of manufacturing the same. It is provided.

In order to solve the problems described above, according to the present invention, a vehicle seat having an accent line is provided with a seat cushion and a seat back which are formed by covering the surface of a urethane pad with a seat cover. A lap-stitched portion is formed on one of the seat covers, and the lap-stitched portion formed on the seat cover is fixed to the surface of the urethane pad with an adhesive without being partially embedded in the urethane pad. It was made for the part sewn by lap stitching to form an accent line by being done.
Further, in order to solve the problems described above, in the present invention, in the vehicle seat provided with a seat cushion and a seat back and having an accent line formed, the seat cushion and the seat back cover the surface of the urethane pad with a seat cover. The seat cover is formed, and an accent line is formed on the seat cover of either the seat back or the seat cushion, and the accent line is sewn in a portion where the seat cover is sewn in two sheets and a triple sheet And a seat cover formed with an accent line and a urethane pad are fixed by an adhesive.
Furthermore, in order to solve the above-described problems, in the present invention, in the method of manufacturing a vehicle seat having an accent line, two sheet covers are formed by overlapping two sheet covers with facing materials facing each other. Of the two sheet covers that are sewn together near the end, and folded back at the sewn part of one of the two sheet covers sewn together near the end, and the two sheets that are sewn together with the folded one sheet cover An accent line was formed by sewing together with the seat cover on the side closer to the end than the sewn part, and the adhesive was applied to the surface of the urethane pad of the vehicle seat, and the adhesive was applied to the surface The urethane pad and the seat cover in which the accent line was formed were heated and pressed to stick the seat cover to the urethane pad.

  According to the present invention, the portion in which the accent line is formed can be formed with substantially the same thickness as the thickness of one sheet cover, and the accent line portion of the seat cover is attached to the urethane pad to adhere the accent line. Thus, the vehicle seat with the accent line formed can be easily formed.

  In addition, it has become possible to easily manufacture a vehicle seat having various types of accent lines, without replacing the time-consuming production process.

FIG. 1 is a perspective view of a passenger car seat in which an accent line is formed. FIG. 2 is a cross-sectional view showing the structure of the seat cover. FIGS. 3A and 3B are a flow chart showing the process of overlapping stitching in the embodiment of the present invention and a cross-sectional view showing the configuration of the seat cover in each process of the flow. FIG. 4 is a perspective view of a urethane pad. FIG. 5 is a flow chart showing a process of attaching a seat cover to a urethane pad in an embodiment of the present invention. FIG. 6 is a perspective view of a seat back formed according to an embodiment of the present invention.

  The present invention adjusts the thickness of the overlapped seam by turning over one of the skins after overlapping stitching of the two skins of the seat cover of the vehicle seat and turning over the two skins again. The thickness of the lap-stitched portion and the other skin portion is made to be substantially the same. Thus, the seat cover is adhered to the urethane pad and fixed without forming a groove in the urethane pad which is the inner member of the seat back or the seat cushion, thereby forming the seat back or the seat cushion having the accent line. .

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a basic configuration of a passenger car seat 1 which is a vehicle seat targeted by the present invention. The passenger car seat 1 includes a cushion seat 2, a seat back 3, a headrest 4, and a side support 5. An accent line 30 is formed on the cushion seat 2 and the seat back 3.

  FIG. 2 shows the cross-sectional configuration of the seat cover 10 used in the present invention. The seat cover 10 is formed of a surface skin material 11, a cushion material 12 formed of polyurethane below the surface material 11, and a back fabric 13 covering the back surface of the cushion material 12. The surface material 11 and the backing material 13 are bonded to the cushion material 12 with an adhesive. The skin material 11 is relatively hard compared to the cushion material 12. Therefore, when pressed from above, the thickness of the skin material 11 does not change, but the thickness of the cushion material 12 changes significantly. The back fabric 13 is thinner than the skin material 11 and the cushion material 12, and the thickness hardly changes even when pressed from above.

  FIG. 3 shows a process of sewing two sheet covers 10-1 and 10-2 according to the present invention. First, in the two-sheet overlapping step of S301, the two sheet covers 10-1 and 10-2 are overlapped such that the skin materials 11-1 and 11-2 face each other (inner side). Next, in the two-sheet overlapping sewing process of S302, the two sheet covers 10-1 and 10-2 are sewn together in a portion A (single stitch). At this time, the cushion materials 12-1 and 12-2 are compressed around the sewn A portion, and the thickness of the A portion becomes thinner. On the other hand, on both sides of the portion A, the cushioning material 12-2 has an original thickness. Next, in the upper folding step of S303, the upper seat cover 10-1 is folded back from the sewn position A. Thereby, the skin material 11-1 of the seat cover 10-1 is at the top.

  Finally, in the three-sheet overlapping sewing process of S304, the upper sheet cover 10-1 is folded back, and the three sheet coverings are sewn together (press-stitching) at the portion B. At this time, since the uppermost side of the upper sheet cover 10-1 is covered with the skin material 11-1, when the portion B is sewn in this state, the relatively hard skin material 11-1 is compared The thickness of the portion of the suture portion B can be made comparable to the thickness of one sheet cover 10-1 or 10-2 by crushing the soft cushioning material 12-1.

  Thus, since the thickness of the sewn portion can be made comparable to the thickness of one sheet cover 10-1 or 10-2, the conventional sewn portion is the sheet cover 10-1 or 10-. It is not necessary to form a groove for embedding the sewn portion in the urethane pad, as in the case where the thickness is larger than the thickness of one sheet.

  As a result, it is possible to attach two sewn sheet covers onto a flat urethane pad 31 as shown in FIG. 4 with the surface substantially flat, thereby forming grooves in the urethane pad. As a result, there is no need to embed the sewn portion of the seat cover in the groove, and the process of attaching the seat cover to the urethane pad can be simplified. In FIG. 4, an example of the urethane pad used for the seat back 3 is shown as an example of the urethane pad 31.

  Next, the process of attaching a seat cover to a urethane pad and forming a seat back is shown in FIG. First, the seat cover 10 sewn together through the steps as described with reference to FIG. 3 is put into the production line (S500), and the urethane pad 31 is put into the production line (S501). Next, an adhesive is applied to the surface of the urethane pad (S502). Next, the sheet cover 10 is pressed against the urethane pad 31 (heated) and heated, and after a predetermined time has elapsed, the sheet cover 10 is adhered and fixed to the urethane pad 31 by releasing the heat and pressure (S503) ) The seat back 3 is formed, and the formed seat back 3 is taken out from the line (S504) to complete the process.

  The appearance of the seat back 3 thus formed is shown in FIG. The surface of the seat back 3 is covered with the seat cover 10, and as described with reference to FIG. 2) It is formed.

  According to this embodiment, the thickness of the sewn portion is made substantially equal to the thickness of one sheet cover by stitching three sheet covers together with the relatively hard skin material 11 as the uppermost surface. Can. As a result, it is not necessary to form a groove in the urethane pad and embed the sewn portion in this groove, and it is necessary to change the groove shape every time the shape of the accent line is different, and prepare a jig for embedding for each groove shape. Can be eliminated and the production process can be simplified.

  Further, in this embodiment, instead of eliminating the step of embedding the sheet cover in the groove formed in the urethane pad, an adhesive is applied to the urethane pad as a means for fixing the sheet cover to the urethane pad, and sewing is performed thereon I took a method of overlapping the seat cover. This makes it possible to easily cope with various urethane pad shapes and accent line shapes, since no special jig is required in the production process.

  DESCRIPTION OF SYMBOLS 1 ... Seat for vehicles 2 ... Cushion seat 3 ... Seat back 10, 10-1, 10-2 ... Seat cover 11, 11-1, 11-2 ... Skin material 12, 12 -1, 12-2 ... Cushion material 13, 13-1, 13-2 ... Back fabric 31 ... Urethane pad 35, 35-1, 35-2 ... Accent line.

Claims (7)

A vehicle seat in which an accent line is formed,
The surface of the urethane pad comprises a seat cushion and a seat back formed by covering a sheet cover formed by bonding the soft cushion material and fabric back to the skin material and the table surface material,
Wherein the table surface material before hear cushion member and said seat cover made up of the back fabric is 3-ply sewing portions is formed on one of the seat cover of a seat cushion or the seat back Yes,
The portion Shitokaba over is pre Symbol 3-ply stitching is formed before chrysanthemum cushion material crushed by one the thickness of the same order of the thickness of the seat cover, the 3-ply sewing The three-layer-stitched portion forms an accent line by being fixed to the surface of the urethane pad with an adhesive without being partially embedded in the urethane pad. The seat for vehicles in which the accent line to be formed was formed. A vehicle seat having a seat cushion and a seat back and having an accent line formed thereon,
Wherein the seat cushion and the seat back are formed over a sheet cover formed by bonding the soft cushion material and back fabric surfaces of the urethane pad to the skin material and the table surface material,
An accent line is formed on the seat cover or one of the seat covers.
The accent line and a sewing engaged portion and sewing together portions of three stacked the seat cover made up of said fabric back and the table surface material before chrysanthemum cushion material in two-ply formed Te, the 3-ply sewing portions are formed before chrysanthemum cushion material crushed by one the thickness of the same order of the thickness of the seat cover,
A vehicle seat in which an accent line is formed, wherein the seat cover in which the accent line is formed and the urethane pad are fixed by an adhesive.   It is a vehicle seat in which the accent line according to claim 1 or 2 was formed, and the part to which said accent line of said urethane pad hits is formed flatly, The accent line characterized by the above-mentioned is formed Vehicle seat.   The vehicle seat according to claim 2, wherein the accent line portion of the seat cover is bonded onto the urethane pad without being embedded in the urethane pad. A vehicle seat with an accent line formed. A method of manufacturing a vehicle seat having an accent line formed thereon ,
Table cladding material softer cushioning material and fabric back and sheet Tokaba formed by bonding to the surface material of the opposed two said skin material superimposed,
Sutured near the end of the previous SL two sheets cover overlapping said,
Among the two sheet covers sewn together near the end, one sheet cover is folded back at the sewn part,
The one sheet cover folded and the two sheet covers sewn together are sewn together on the side closer to the end by being sewn on the side closer to the end than the sewn part forming an accent line in front hear cushion material to crushing by one the thickness of the same order of the thickness of the sheet cover in part,
Apply an adhesive to the surface of the urethane pad of the vehicle seat,
A seat for a vehicle having an accent line formed thereon, wherein a urethane pad having an adhesive applied to the surface and a seat cover having the accent line formed thereon are heated and pressed to stick the seat cover to the urethane pad. Manufacturing method.   The method for manufacturing a vehicle seat having an accent line according to claim 5, wherein the accent line formed on the seat cover is attached to a flat portion of the urethane pad. The manufacturing method of the vehicle seat in which the accent line to be formed was formed.   The method for manufacturing a vehicle seat having the accent line according to claim 5, wherein the portion of the accent line formed on the seat cover is not embedded in the urethane pad, but on the surface of the urethane pad. The manufacturing method of the vehicle seat in which the accent line characterized by adhere | attaching was formed.

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