JP2013106774A - Sewing structure of skin material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sewing structure of a skin material which is capable of improving appearance quality, reducing the costs required for the skin material, and reducing the burden on a sewing worker.SOLUTION: Stitches 10 are formed on the skin material 11 forming a prescribed skin part of a seat skin 9, reaching an end edge 11T of the skin material 11, an edge material 13 being a different member from the skin material 11 is disposed outside the end edge 11T of the skin material 11, the stitches 10 are formed continuously to the edge material 13 beyond the end edge 11T of the skin material 11, and the stitches 10 of the edge material 13 are formed to turn toward the end edge 11T side of the skin material 11.

Description

The present invention
The present invention relates to a sewing structure of a skin material in which stitches are formed on a skin material forming a predetermined skin portion of a sheet skin and reach an edge of the skin material.

As disclosed in Patent Document 1, there is a technique for forming a stitch (sewing pattern) on a skin material forming a predetermined skin portion of a sheet skin in order to improve the design of the sheet. In Patent Document 1, the skin material of the seat cushion is described as an example, but this type of technology is also applied to the skin material of the seat back. Hereinafter, this technique will be described by taking a seat back skin material as an example.
6 and 7, a decorative stitch 10 is formed on a side skin material 11 (corresponding to a skin material) covering the side support portion 5 of the seat back 2 of the vehicle seat 1. Reference numeral 3 denotes a seat cushion.
In order to form the stitch 10, the side skin material 11 is divided into two by a dividing line along the longitudinal direction of the side skin material 11, and the divided end portions 11 </ b> A are sewn together, and each divided end portion 11 </ b> A is sewn to a sewing line. It is folded and overlapped on the back side of the remaining side skin material part with the center.
And the stitch 10 is formed in the division | segmentation edge part 11A and side skin material part which mutually overlapped. The stitch 10 is configured as a double stitch, and is formed in a pair in parallel with a space in the direction orthogonal to the longitudinal direction of the stitch 10.
Further, when the stitch 10 is formed, in order to prevent the thread from coming off and fraying from the end portion 11C of the skin material 11, the stitch back is performed over the length L1 to return the sewing direction in the opposite direction, and then again. There are seams along the sewing line.
An end portion 11C of the side skin material 11 including the edge 11T is sewn to an end portion 16C of a main skin material 16 (a skin material forming another skin portion of the sheet skin) covering the center support portion 4.

Japanese Utility Model Publication No. 62-116999

The sewing allowance L2 (see FIG. 6) necessary for sewing the end portion 11C of the side skin material 11 and the end portion 16C of the main skin material 16 is about 7 mm, and sewing is performed for two stitches at a general sewing pitch of 5 mm. When it is turned back, the length of the stitch back becomes 10 mm.
Therefore, according to the above-described conventional technique, 3 mm (10 mm− on the design surface of the side skin material 11 on which the stitch 10 is formed in a state where the end portions 11C and 16C of the both skin materials 11 and 16 are sewn together. 7mm = 3mm) (see the enlarged view in FIG. 7) is exposed, and there is a problem that the quality of the appearance is deteriorated.
It is also conceivable to increase the width of the seam allowance of the both skin materials 11, 16 so that the stitch back 12 is not exposed on the design surface.
However, when the width of the seam allowance is increased, the size of both the skin materials 11 and 16 is increased, and waves and undulations are generated at the joint portions of both skin materials 11 and 16. When expensive skin materials 11 and 16 are used, the cost required for both skin materials 11 and 16 increases.
Further, the stitching back at the end portion 11C of the side skin material 11 is performed while tension is applied to the thread in a state where the side skin material 11 is pressed by the pressing plate, and therefore the physical properties (easiness of elongation and rigidity) of the side skin material 11 In some cases, the side skin material 11 was torn or wrinkled.
Furthermore, when managing the stitch pitch at the stitch back with high accuracy, it is necessary to check the length of the stitch back 12 exposed on the side of the design surface of the side skin material 11 one by one. Therefore, the burden on the worker was increased.
The present invention has been made in view of the above circumstances, and its purpose is to improve the appearance quality, to reduce the cost required for the skin material, and to reduce the burden on the operator of the sewing work. It is in providing a sewing structure.

The feature of the present invention is that
A sewing structure of a skin material in which stitches are formed on the skin material forming a predetermined skin portion of the skin for the sheet and reaches an edge of the skin material,
End material of a member different from the skin material is arranged outside the edge of the skin material,
The stitch is formed continuously to the end material beyond the edge of the skin material,
The stitches of the end material are formed so as to be folded back toward the end edge side of the skin material. (Claim 1)

The stitches are formed continuously to the end material beyond the edge of the skin material, and the stitches of the edge material are formed so as to be folded toward the edge side of the skin material. It is possible to prevent the thread from coming off and fraying from the edge of the skin material including the edge, and when the edge of the skin material is sewn to the edge of another skin material, Can be covered with the edge of the skin material.
Thereby, in the state which sewed the edge parts of both skin materials, it can prevent that a stitch back is exposed to the design surface of the skin material in which the stitch is formed, and can improve appearance quality. .
Further, since the stitched back portion can be covered with the end portion of the other skin material, it is not necessary to increase the width of the seam allowance at the end portions of both skin materials. As a result, it is possible to prevent waviness and undulation from occurring at the mating portion of both skin materials, and to prevent an increase in cost required for the skin material.
And since it sews back to the end material of a member different from a skin material, it can prevent that a tear, a wrinkle, etc. generate | occur | produce in a skin material.
Furthermore, as described above, since the stitched back portion can be covered with the end portion of the other skin material, it is not necessary to manage the stitch pitch of the stitched back with high accuracy. It is possible to sew without worrying about the stitches that are turned back and back, and the burden on the operator can be reduced. (Claim 1)

In the present invention,
When the end material is in contact with the edge of the skin material, the following effects can be achieved. (Claim 2)

  Since the edge material is in contact with the edge of the skin material, it is possible to prevent a gap from being formed between the edge of the skin material and the edge of the edge material, and the seat skin is used as a cushion pad. It is possible to prevent the end portion of the end material from being caught on the frame or the like when covering, and to improve the workability of the assembling work. (Claim 2)

In the present invention,
When the sheet skin is covered with a cushion pad, the end material can exhibit the following effects when it overlaps the back surface of the sewing portion of the skin material on which the stitch is formed. (Claim 3)

  In general, the sewing portion is formed by double-folding the end portion of the skin material. Since the end material overlaps the back surface of the sewing part having a thickness as described above, the presence of the end material is hardly noticeable on the design surface side of the skin material. That is, it is possible to prevent the end material from overlapping under the relatively thin skin material (another skin material) and causing the surface of the skin material (another skin material) to rise. Thereby, appearance quality can be improved more. (Claim 3)

In the present invention,
When the stitches are configured as double stitches and are provided with a pair in the direction orthogonal to the longitudinal direction, the following effects can be obtained. (Claim 4)

  The stitches are configured as double stitches, and are provided in pairs in the direction perpendicular to the longitudinal direction so as to be spaced apart from each other. Therefore, it is possible to secure a wide width of the sewing portion where the end materials overlap, and the design surface of the skin material The presence of mill ends on the side can be made less noticeable. (Claim 4)

In the present invention,
When the sheet skin is covered with the cushion pad and the end material enters the skin material hoist receiving groove formed in the cushion pad, the following effects can be obtained. (Claim 5)

  In the state in which the skin for the seat is covered with the cushion pad, the end material enters into the grooved material housing groove formed on the cushion pad, so that the end material is the skin material even when a thin skin material is used. Can be prevented from appearing on the design surface. (Claim 5)

According to the present invention,
The appearance quality can be improved, the cost required for the skin material can be reduced, and the skin material sewing structure that can reduce the burden on the operator of the sewing work can be provided.

Perspective view of vehicle seat Plan view showing stitches formed over skin material and end material It is sectional drawing which shows another embodiment, and sectional drawing which shows the state by which the end material is accommodated in the skin material hanging tool accommodation groove | channel formed in the seat back pad It is a figure which shows another embodiment, and is a top view which shows the state which overlapped the end material on the sewing part of the skin material It is a figure which shows another embodiment, and is a top view which shows the single stitch formed over the skin material and the end material It is a figure which shows the prior art, and is a perspective view which shows the return of stitches It is a figure which shows the prior art, and is a perspective view which shows the state in which the stitch back of the stitch appears on the surface of the epidermis

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 shows a vehicle seat 1 supported by a support frame 7. This vehicle seat 1 includes a seat cushion 3 that supports a seated person's buttocks and thighs, and a seat back 2 that receives and supports the back of the seated person. The headrest 24 which supports a part is connected.

  The seat back 2 includes a center support part 4 that receives the back of the seated person, and a pair of left and right side support parts 5 that protrude from both sides of the center support part 4 to the front side of the seat and hold the upper body of the seated person in the seat width direction. And.

  FIG. 3 shows a skin 9 (corresponding to a seat skin) of the seat back 2. FIG. 3 is a diagram showing another embodiment. Since the structure of the skin 9 according to another embodiment is the same as the structure of the skin 9 according to this embodiment, the structure of the skin 9 will be described with reference to FIG. As shown in FIG. 3, the skin 9 of the seat back 2 covers the main skin 16 covering the center support portion 4 and the front surface 5M of the side support portion 5 (an inclined surface positioned on the front side of the seat toward the outer side in the seat width direction). The side skin material 11 and the gusseted skin material 23 covering the seat side surface 5S of the side support portion 5 are sewn and formed into a bag shape. Has been.

  Each skin material 11, 16, 23 is formed of leather. Each skin material 11, 16, 23 may be formed of a cloth material, or may be formed of a member other than leather or a cloth material.

As shown in FIGS. 1 and 2, decorative stitches 10 (sewing patterns) are formed on the side skin material 11. In order to form the stitch 10, the side skin material 11 is divided into two by a dividing line along the longitudinal direction of the side skin material 11, and a pair of divided end portions 11 A are sewn together, and each divided end portion 11 A is sewn. It is folded and overlapped with the back side of the remaining side skin material portion around the wear line (see also FIG. 6 showing the prior art for this structure).
And the stitch 10 is formed in the width direction center part of 11 A of division | segmentation edge parts and side skin material part which mutually overlapped. The stitch 10 is configured as a double stitch, and is formed in a pair in parallel with a space in the direction orthogonal to the longitudinal direction of the stitch 10.

  The stitch 10 is formed longer in the longitudinal direction along the top surface 5T in the side skin material portion on the inner side in the sheet width direction than the top surface 5T (see FIGS. 1 and 3) of the side support portion 5, and the length of the stitch 10 is increased. One end (upper end) in the direction reaches the edge 11T inside the sheet width direction of one end (upper end) in the longitudinal direction of the side skin material 11, and the other end (lower end) in the longitudinal direction of the stitch 10 is the side. It reaches the edge 11T on the inner side in the sheet width direction of the other end portion (lower end portion) of the skin material 11 in the longitudinal direction.

  An end portion 11C of the side skin material 11 including the edge 11T is sewn to an end portion 16C (side portion) in the width direction of the main skin material 16 which is a skin material different from the side skin material 11 (FIG. 3). reference). The sewing allowance L2 (see FIG. 6) necessary for the stitching between the end portion 11C of the side skin material 11 and the end portion 16C of the main skin material 16 is about 7 mm, and is a typical sewing pitch of 5 mm for two stitches. , The length L1 of the stitch back is 10 mm. For this reason, with normal sewing means, a stitch back 12 (see an enlarged view of FIG. 7) of 3 mm (10 mm−7 mm = 3 mm) is exposed on the design surface of the side skin material 11, and the appearance quality is deteriorated. Therefore, the present invention is configured as follows.

  As shown in FIG. 2, a rectangular end member 13, which is a separate member from the side skin member 11, is disposed outside the end edge 11 </ b> T of the side skin member 11. Then, the stitch 10 is formed continuously to the end material 13 beyond the end edge 11T of the side skin material 11, and the stitch 10 of the end material 13 is folded back toward the end edge 11T side of the side skin material 11. Is formed. Reference numeral 12 denotes a stitch back of the stitch 10 turned back toward the end edge 11T. FIG. 2 shows one end side in the longitudinal direction of the side skin material 11, but another end material 13 is also arranged on the other end side in the longitudinal direction of the side skin material 11. It has the same structure.

  The end material 13 is set to a thickness and size that do not appear in appearance, and is set to a quadrangle that is the same material as the side skin material 11 and has the same thickness (for example, about 1 mm to 5 mm) and about 15 mm to 20 mm in length and width. . Since the thickness and material of the end material 13 are set to be the same as those of the side skin material 11, a constant seam strength can be given without changing the sewing pitch, the tension of the thread, and the like. The thickness, material, and size of the end material 13 can be variously changed depending on the place of placement and the type of the skin material, and may not be the same as the side skin material 11.

[Sewing method]
(1) At the start of sewing at one end of the stitch 10 in the longitudinal direction, it is sewn back to one end material 13.
(2) Subsequently, the stitch 10 is formed along the sewing line between the pair of split end portions 12A of the side skin material 11.
(3) At the sewing end portion of the side skin material 11, the other end material 13 is similarly sewn back.
Since the end material 13 enters the back side of the side skin material 11 and the main skin material 16, the stitching may be repeated any number of times. As the number of stitches increases, the sewing strength inevitably increases.
Therefore, the operator can increase the sewing strength of the end portion 11C of the side skin material 11 without worrying about the appearance.

With the above configuration,
The stitch 10 is formed continuously to the end material 13 beyond the end edge 11T of the side skin material 11, and the stitch 10 of the end material 13 is formed to be folded back toward the end edge 11T side of the side skin material 11. Therefore, it is possible to prevent the thread from coming off and fraying from the end portion 11C of the side skin material 11 including the end edge 11T, and the end portion 11C of the side skin material 11 is used as the end portion of the main skin material 16. When the stitches are sewn to 16C, the stitched portions (stitched stitches 12) of the stitches 10 can be covered with the end portions 16C of the main skin material 16.

  Thereby, it is possible to prevent the stitch back 12 from being exposed on the design surface of the side skin material 11 on which the stitch 10 is formed in a state where the end portions 11C and 16C of the both skin materials 11 and 16 are sewn together. And appearance quality can be improved.

Further, since the stitched portion of the stitch 10 can be covered with the end portion 16C of the main skin material 16, it is not necessary to increase the width of the seam allowance of the end portions 11C and 16C of the both skin materials 11, 16. As a result, it is possible to prevent undulations and undulations from occurring at the mating portions of both skin materials 11 and 16, and to prevent an increase in cost required for the side skin material 11.
Since the side skin material 11 is sewn back to the end material 13 which is a separate member, it is possible to prevent the side skin material 11 from being broken or wrinkled.

  Further, as described above, the stitched portion of the stitch 10 can be covered with the end 16C of the main skin material 16, so that the stitch pitch of the stitching 12 does not have to be managed with high accuracy. The operator can sew without worrying about the stitches of the stitches 12 and can reduce the burden on the operator.

[Another embodiment]
(1) As shown in FIG. 3, in the state where the skin 9 is covered with the seat back pad 31, the end material 13 is a hanging bag receiving groove 27 (skin material hoisting tool formed in the seat back pad 31. (Corresponding to the housing groove).
The hanging bag accommodating groove 27 is formed in the mating portion (connecting portion) between the center support portion 4 and the side support portion 5 along the vertical direction (vertical direction of the seat back). In addition, a suspension bag 17 (corresponding to a skin material suspending tool) accommodated in the suspension bag accommodation groove 27 is located on the back side of both skin materials 11 and 16 at the connection portion between the main skin material 16 and the side skin material 11. Are sewn together. A wire 18 is provided at the bottom of the hanging bag receiving groove 27, and the hanging bag 17 is connected and supported to the wire 18 via a hog ring material. Thereby, the joint part of the main skin material 16 and the side skin material 11 is drawn in the said suspension bag accommodation groove | channel 27 side.
Further, even when the side skin material 11 and the main skin material 16 having a small thickness are used, it is possible to avoid the end material 13 from overlapping the back surfaces of the both skin materials 11 and 16 serving as the design surface. It is possible to reliably prevent the thickness from rising to the design surface of the skin 9 (side skin material 11 / main skin material 16) and damaging the appearance.

(2) As shown in FIG. 4, in the state where the skin 9 is put on a seat back pad 31 (corresponding to a cushion pad), the end material 13 is a sewing portion of the side skin material 11 on which the stitch 10 is formed. It may be configured to overlap the back of 19. The end material 13 is sewn to the sewing portion 19.
Since the sewing portion 19 is formed by bending the divided end portion 11 </ b> A of the side skin material 11 and has a thickness, the presence of the edge material 13 on the side of the design surface of the side skin material 11 is not noticeable. That is, for example, it can be prevented that the end material 13 overlaps the relatively thin main skin material 16 and the surface of the main skin material 16 is raised. Thereby, appearance quality can be improved more. In particular, as compared with the case of the single stitch 10, the double stitch 10 has a wider width of the sewing portion 19, so that the range overlapping the end material 13 can be widened, and the influence on the appearance of the end material 13 is prevented. be able to

(3) As shown in FIG. 5, the stitch 10 may be configured as a single stitch, and only one stitch may be provided in the sewing portion 19.

(4) If the design does not affect the appearance, the end portion 13C of the end material 13 may be brought into contact with the end edge 11T of the side skin material 11, and the end portion 13C of the end material 13 may be The side skin material 11 may be overlaid on the end portion 11C including the end edge 11T.
According to this configuration, it is possible to prevent a gap from being formed between the edge 11T of the side skin material 11 and the end portion 13C of the edge material 13, and when the skin 9 is put on the seat back pad 31, the end It is possible to prevent the end portion 13C of the material 13 from being caught on the seat back frame or the like, and to improve the workability of the assembling work.

(5) The present invention can also be applied to a side skin material sewing structure that covers the side support portion 6 of the seat cushion 3. Stitches 20 (see FIG. 1) are formed on the side skin material that covers the side support portions 6 of the seat cushion 3. The present invention can also be applied to other skin material sewing structures.

9 Sheet skin (skin)
10 Stitch 11 Skin (Side skin)
11T edge (edge of skin material)
13 End material 19 Sewing part 27 Skin material hanging tool accommodation groove (hanging bag accommodation groove)
31 Cushion pad (seat back pad)

Claims (5)

A sewing structure of a skin material in which stitches are formed on the skin material forming a predetermined skin portion of the skin for the sheet and reaches an edge of the skin material,
End material of a member different from the skin material is arranged outside the edge of the skin material,
The stitch is formed continuously to the end material beyond the edge of the skin material,
The stitch structure of the skin material is a sewing structure of the skin material that is formed so as to be folded back toward the edge of the skin material.   The sewing structure for a skin material according to claim 1, wherein the edge material is in contact with an edge of the skin material.   The structure for sewing a skin material according to claim 1 or 2, wherein the end material overlaps a back surface of a sewing portion of the skin material on which the stitch is formed in a state where the skin for the sheet is covered with a cushion pad.   The said stitch is comprised by the double stitch, The sewing structure of the skin material of Claim 3 provided mutually spaced apart in the direction orthogonal to a longitudinal direction.   The structure for sewing a skin material according to claim 1 or 2, wherein the end material enters a skin material suspending tool receiving groove formed on the cushion pad in a state where the skin for the seat is covered with a cushion pad.

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