JP6716812B2 - METHOD FOR FORMING DECORATED STITCH, METHOD FOR MANUFACTURING SEAT SKIN MEMBER, AND SEAT SKIN MEMBER - Google Patents

Description

The present invention relates to a seat used as various chairs for office work and furniture, particularly a seat suitable for various vehicles such as automobiles, aircrafts, trains, and ships, and a skin member for a seat disposed on the surface thereof. The present invention relates to a method for forming a decorative stitch, a method for manufacturing a sheet skin member, and a sheet skin member.

A seat skin member is provided on each surface of a seat cushion portion, a seat back portion, a headrest portion, and the like that form a seat. This sheet skin member is formed with a decorative stitch such as a single stitch or a double stitch in order to enhance the decorative property of the sheet. In addition, in the present specification, the "skin member for a sheet" is a member that covers the outer surface of the seat pad and has a skin on the surface that comes into contact with the human body, and its structure is not limited, but is usually In addition to the outer skin on the surface, a wadding on the inner side of the outer skin and a back base fabric on the inner side of the outer layer have a laminated structure, which includes what are called "seat trim" and "trim cover".

The decorative stitch as described above is formed, for example, along a boundary line of the skin member parts that are newly integrated into one by stitching together predetermined skin member parts that form the seat skin member. However, in order to prevent the thread constituting the decorative stitch from slipping off or fraying, it is necessary to sew back in the opposite direction at the edge of the integrated skin member part, but if such stitching is performed, Further, when stitched with other skin member parts, there is a problem that the stitched-back portion may be exposed on the surface and the appearance may be impaired.

In Patent Document 1, in order to improve this point, an end material as a separate member different from the skin member part is arranged outside the edge of the skin member part, and the stitched back portion of the decorative stitch is used as the end material. Disclosed is a technique for preventing the exposed portion of the seam from being exposed to the surface by disposing the end material on the back surface side of the skin member part.

JP, 2013-106774, A

However, in the technique of Patent Document 1, it is necessary to dispose one end material for each end edge of the skin member part forming the decorative stitch. Further, the point in which the end piece must be sewn back is similar to the case where the end piece is not provided. Therefore, it is troublesome and there is a problem in workability.

The present invention has been made in view of the above, and a method of forming a decorative stitch in a seat skin member that can form a decorative stitch in a simpler process, improve workability, and manufacture a good-looking seat skin member. An object of the present invention is to provide a method for manufacturing a sheet skin member and a sheet skin member.

The method for forming a decorative stitch of the present invention is a method for forming a decorative stitch for forming a decorative stitch on a predetermined skin member part among a plurality of skin member parts constituting a sheet skin member,
A patch as a separate member different from each of the skin member parts is interposed between an edge of one skin member part to be subjected to the decorative stitch and an edge of another skin member part, and the patch is used. A step of continuously forming the decorative stitch on each of the skin member parts and the patch that are adjacent to each other with a
Forming the decorative stitch on each of the skin member parts and the patch, and then cutting the patch at an intermediate position along the forming direction of the decorative stitch.

In the step of continuously forming the decorative stitch with the patch interposed between the respective skin member parts,
A patch is also interposed between the edge of the skin member part on the sewing start side for forming the decorative stitch and the edge of the skin member part on the sewing end point side, and the plurality of skin member parts and each of them. The decorative stitch can be continuously formed so that a plurality of patches located between the end edges are connected in a loop.
In the step of continuously forming the decorative stitch with the patch interposed between the respective skin member parts, it is preferable to sew the decorative stitch in one direction.

Further, the method for producing a sheet skin member of the present invention is characterized in that the sheet skin member is produced by using a skin member part having a decorative stitch formed by the method for forming a decorative stitch.
The method includes a step of sewing predetermined skin member parts including the skin member part on which the decorative stitch is formed, and in the step, the cut patch is provided on the back surface side of any of the skin member parts. It is preferable to position and sew.

The sheet skin member of the present invention is a sheet skin member having a skin member part on which a decorative stitch is applied,
A patch as a separate member different from the skin member part is sewn to the edge of the skin member part on which the decoration stitch is formed in the forming direction of the skin stitch by the decorative stitch, and the skin member. The sewing direction of the decorative stitch in the part and the patch is one direction and does not have a seam return portion, and the outer end surface of the patch is a cut surface together with the decorative stitch. ..

According to the present invention, between each edge of one skin member part and another skin member part forming a decorative stitch, a patch is arranged as a different member different from them, and is continuously connected to each skin member part and the patch. To form a decorative stitch, and then the patch is cut at an intermediate position along the direction in which the decorative stitch is formed. That is, the patch may be prepared by preparing one with a predetermined length for two skin member parts sandwiching the patch, and further, sew back continuously by preferably sewing in one direction. Since it is not performed, the decorative stitch can be applied in a simple process, and the working time and the manufacturing cost can be reduced. In addition, each patch cut and divided in the middle is sewn with a proper number of decorative stitches, so that there is no thread omission or fraying. Further, the divided patches are arranged on the back surface side of the skin member parts when the skin member parts are sewn together, so that the appearance of the seat skin member is not impaired.

FIG. 1 is a perspective view showing an external appearance of a seat cushion portion manufactured by applying a method for manufacturing a seat skin member according to an embodiment of the present invention. FIG. 2 is a diagram for explaining a method for manufacturing a seat skin member according to an embodiment of the present invention. FIG. 3 is an enlarged view of part A of FIG. 4(a) is a plan view of FIG. 3, FIG. 4(b) is a view taken along the line BB of FIG. 4(a), and FIG. 4(c) is FIG. 4(a). 4C is a view taken along the line C-C of FIG. 4, and FIG. 4D is a diagram showing a state in which the patch of FIG. 4A is cut. FIG. 5: is a figure for demonstrating the process of sewing side skin member parts and center skin member parts.

Hereinafter, the present invention will be described in more detail based on the embodiments shown in the drawings. First, as shown in FIG. 1, the seat skin member 1 of the present embodiment is located on the surface of the seat cushion portion 100 and covers the seat pad supported by the cushion frame. The seat skin member 1 is formed by sewing a plurality of skin member parts together. In the present embodiment, there are a central skin member part 2 arranged on the central seating surface, side skin member parts 3 and 4 arranged on the left and right side support portions, and these are formed by being sewn together. ing.

Here, as shown in FIGS. 1 to 3, the side skin member parts 3 and 4 each include an outer side skin member part 31, 41 located on the outer side and an inner side skin member part 32, 42. , Which are integrated by being sewn adjacent to each other in the longitudinal direction. Then, along the boundary lines 33, 43 stitching the outer side skin member parts 31, 41 and the inner side skin member parts 32, 42, double stitches of two seams each sandwiching the boundary lines 33, 43. Decorative stitches 34 and 44 are formed. Each of the display member parts of the present embodiment, for example, the central skin member part 2 and the side skin member parts 3 and 4, as shown in FIG. 3 and FIG. It has a laminated structure including 301, 401, waddings 202, 302, 402, and base cloths 203, 303, 403. Of course, this structure is merely an example, and the present invention is applied to various seat skin members capable of forming a decorative stitch by covering the surface of the seat cushion portion 100 or the seat back portion, the headrest portion, or the like. ..

In the present embodiment, the decorative stitches 34, 44 are formed as follows. This will be described with reference to FIGS.

First, one side skin member part 3, which is formed by sewing the outer side skin member part 31 and the inner side skin member part 32 adjacent to each other in the longitudinal direction and sewn to each other, the outer side skin member part 41, and the inner side skin member. As shown in FIGS. 2 to 4, the other side skin member part 4 formed by stitching the part 42 and the part 42 adjacent to each other in the longitudinal direction is provided with a patch 5 as another member different from them. To form the decorative stitches 34, 44.

Specifically, for example, along the boundary line 33 of the one side skin member part 3, a decorative stitch 34 composed of a double stitch is formed by sewing. Next, when reaching the vicinity of the edge 3a of the one side skin member part 3, the patch 5 is arranged so as to be located on the extension line of the boundary line 33. At this time, one end edge 5a of the patch 5 is made to be adjacent to the end edge 3a of the one side skin member part 3, and preferably, as shown in FIGS. And the edge 3a of one of the side skin member parts 3 are overlapped with each other in a predetermined range, and the sewing machine sewing is continued as it is, and the patch 5 is also formed with a decorative stitch 54 composed of a double stitch.

When the decorative stitch 54 is formed up to the vicinity of the other end edge 5b of the patch 5, the end edge 4a of the other side skin member part 4 is adjacent to the other end edge 5b of the patch 5, and preferably, as shown in FIG. As shown in a) and (b), the other end edge 5b of the patch 5 and the end edge 4a of the other side skin member part 4 are overlapped with each other in a predetermined range, and sewing is continued. Then, the decorative stitch 44 composed of a double stitch is formed so as to sandwich the boundary line 43 of the other side skin member part 4.

As described above, in the present embodiment, the sewing stitch is advanced in one direction from the one side skin member part 3 to the other side skin member part 4 via the patch 5 in the order of the decorative stitches 34, 54, 44. It forms continuously.

In addition, when there are other skin member parts to be subjected to the decorative stitch, for example, when there are side skin member parts 3 and 4 used for the seat cushion portion 100 of another seat, the other side skin member is used. The sewing stitch is continuously advanced on the part 4 through the patch 5 in the same manner as described above to form the decorative stitch (see FIG. 2).

In this way, after the decorative stitches 34, 54, 44 are formed on the predetermined number of side skin member parts 3, 4 via the patch 5, the patch 5 is cut midway in the forming direction of the decorative stitch 54. Although depending on the length of the patch 5, each patch (hereinafter, “divided patch”) 50 divided by cutting (see FIG. 4D), preferably, a plurality of threads of the decorative stitch 54 remain, More preferably, the cutting is performed at the position D in FIG. 4(a) which is near the middle so that four or more stitches remain. This prevents the decorative stitches 54 applied to the divided patch 50 from coming off or fraying. Since the divided patch 50 is used in a state where it is finally cut at the D position, the outer end surface of the divided patch 50 remains the cut surface together with the decorative stitch 54 that is cut together. However, the divided patch 50 is hidden behind the back surface of one of the skin member parts 2, 3 and 4 when the seat skin member 1 is manufactured, as will be described later. It does not affect the appearance even if it is left as it is. Further, the patch 5 is made of a member different from each of the skin member parts 2, 3 and 4, but the material itself may be the same or different. For example, a cloth material such as a non-woven fabric can be used as the patch 5 for each of the skin member parts 2, 3, and 4 having a laminated structure of a skin, a wadding, and a base cloth.

In the above description, the decorative stitches 34, 54, 44 are continuously formed in the order of the one side skin member part 3, the patch 5 and the other side skin member part 4, but each side skin member part. Of 3 and 4, the patch 5 is adjacent to the edge on the starting side of sewing (sewing) and the edge on the ending side of sewing (sewing), or the edge of the patch 5 is set to a predetermined value. The areas are overlapped with each other and the decorative stitches 54 are continuously formed.

In this case, a plurality of skin member parts (for example, the side skin member parts 3 and 4) are sequentially formed through the patch 5 to form a decorative stitch, and the edge of the skin member part on the sewing start side and the end point side of sewing are formed. Further, one patch 5 is laid over the edge of the skin member part in the above, and decoration is performed so that the plurality of skin member parts and the plurality of patches 5 located between the respective edge parts are all connected in a loop shape. It is preferable to continuously form the stitches. As a result, only one patch 5 needs to be provided between the edge of the skin member part on the sewing start side and the edge of the skin member part on the sewing end point side, which simplifies the manufacturing process and reduces costs. It can be reduced.

Further, regardless of which part of the skin member part or patch the sewing of the decorative stitch is started, it is preferable to sew the decorative stitch in one direction in order to simplify the manufacturing process. Therefore, according to this method, the stitched back portion of the decorative stitch is not formed. Further, the "skin member part on the sewing start side" does not necessarily mean a skin member part in which the portion where the sewing of the decorative stitch has started exists, but first, the decorative stitch 54 is formed on the patch 5, When the edge of the first skin member part is brought close to or over the edge of the patch 5 and the sewing is continued, this first skin member part corresponds to the "skin member part on the sewing start side". To do. The same applies to the "skin member part on the sewn end point side", and the part of the sewing end of the decorative stitch may not be the range of the skin member part but the range of the patch 5 following it.

According to the method for manufacturing the sheet skin member of the present embodiment, the patch 5 is interposed between the side skin member parts 3 and 4 on which the decorative stitches 34 and 44 are to be formed, and the decorative stitch 54 is also applied to the patch 5. And a step of cutting the patch 5 in the middle thereof. Therefore, the patch 5 to be used is compared with the conventional method in which the patch 5 is separately provided on each of both side edges of the side skin member parts 3, 4 and the like, and the patch 5 is sewn back. It is possible to reduce the number of sewing machines and simplifies the sewing process. As a result, the workability is improved and the manufacturing cost can be reduced. The decorative stitches 34, 44 are not limited to the double stitches, and needless to say, may be single stitches or the like.

As shown in FIG. 5, the side skin member parts 3 and 4 to which the decorative stitches 34 and 44 are applied are arranged along the respective side edges of the central skin member part 2 and have a predetermined seam allowance. The seat skin member 1 for covering the seat cushion portion 100 is manufactured by being sewn together. In addition, when stitching with the central skin member part 2, the patch 5 (divided patch 50) continuously sewn to each edge of each side skin member part 3, 4 is the side skin member part 3, 4. 4 or sew together so that it may be located on the back side of the central skin member part 2. As a result, the patch 5 (divided patch 50) is not exposed on the surface of the sheet skin member 1, and the appearance is not affected.

The present invention is for seats such as seats for various vehicles such as automobiles, airplanes, trains, and ships, which are required to have high decorativeness or high quality, such as seat cushions, seat backs, and headrests. Not only can it be applied to the manufacture of the skin member, but it can also be applied to the manufacture of the seat skin member in office chairs, furniture chairs, and the like.

1 Seat skin member 2 Central skin member part 3 One side skin member part 34 Decorative stitch 4 Other side skin member part 44 Decorative stitch 5 Patch 50 Split patch 54 Decorative stitch 100 Seat cushion part

Claims (6)

A method of forming a decorative stitch for forming a decorative stitch on a predetermined skin member part among a plurality of skin member parts constituting a seat skin member,
A patch as a separate member different from each of the skin member parts is interposed between an edge of one skin member part to be subjected to the decorative stitch and an edge of another skin member part, and the patch is used. A step of continuously forming the decorative stitch on each of the skin member parts and the patch that are adjacent to each other with a
Forming the decorative stitch on each of the skin member parts and the patch, and then cutting the patch at an intermediate position along the forming direction of the decorative stitch. .. In the step of continuously forming the decorative stitch with the patch interposed between the respective skin member parts,
A patch is also interposed between the edge of the skin member part on the sewing start side for forming the decorative stitch and the edge of the skin member part on the sewing end point side, and the plurality of skin member parts and each of them. The method for forming a decorative stitch according to claim 1, wherein the decorative stitch is continuously formed so that a plurality of patches located between the end edges are connected in a loop. The method for forming a decorative stitch according to claim 1 or 2, wherein the decorative stitch is sewn in one direction in the step of continuously forming the decorative stitch with the patch interposed between the skin member parts. .. A method for manufacturing a skin member for a sheet, comprising manufacturing a skin member for a sheet using a skin member part having a decorative stitch formed by the method for forming a decorative stitch according to any one of claims 1 to 3. .. The method includes a step of sewing predetermined skin member parts including the skin member part on which the decorative stitch is formed, and in the step, the cut patch is provided on the back surface side of any of the skin member parts. The method for manufacturing a seat skin member according to claim 4, wherein the seating member is positioned and sewn. A skin member for a sheet having a skin member part to which a decorative stitch is applied,
A patch as a separate member different from the skin member part is sewn to the edge of the skin member part on which the decoration stitch is formed in the forming direction of the skin stitch by the decorative stitch, and the skin member. The sewing direction of the decorative stitch in the part and the patch is one direction and does not have a seam return portion, and the outer end surface of the patch is a cut surface together with the decorative stitch. Skin material for seats.

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