Seat cover and method for manufacturing the same

Abstract

To provide a seat cover and the manufacturing method, which can bring down sewing margins disposed at both ends facing and extending in a part constituting a seat cover in one direction by suppressing the sewing margins from causing a failure in external appearance.SOLUTION: An armrest cover 10 includes: a cotton cloth 15 which brings down a third sewing margin 18 and a fourth sewing margin 19 in a lower surface portion 12 in a rear face B direction. The third sewing margin 18 is formed by sewing a right end section in the lower surface portion 12, a lower end section in a right surface portion 13, and a right end section of the cotton cloth 15 by sewing lines S3, S5. The fourth sewing margin 19 is formed by sewing a left end section in the lower surface portion 12, a lower end section in the left surface portion 14, and a left end section of the cotton cloth 15 by sewing lines S4, S6. The armrest cover 10 is covered on a core material 6, so that the third sewing margin 18 and the fourth sewing margin 19 are brought down to abut on a surface on a side of the core material 6 in the lower surface portion 12 by the cotton cloth 15.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a seat cover and a method for manufacturing the same. More specifically, it relates to a seat cover provided with a regulating member for regulating the direction in which the sewing allowance falls on the back side, and a method for manufacturing the same.

Background Art

[0002] Conventionally, in a seat cover, a structure has been adopted to suppress deterioration of the appearance caused by the sewing allowance by folding the sewing allowance formed when sewing and connecting between parts constituting the seat cover in one direction and maintaining it in a state of abutting on the back side of the parts. In the seat cover described in Patent Document 1, in the sewing allowance with adjacent parts arranged at both ends of one part, only the sewing allowance on the side of one part is folded and maintained so as to abut on the back side of one part.

[0003] Furthermore, in the cylindrical seat cover 100 shown in Figure 7, the ends of a pair of first parts 101, which extend perpendicular to the plane of the paper, are sewn together with the ends of a pair of second parts 102, which also extend perpendicular to the plane of the paper, to form a cylindrical shape. In addition, a cotton fabric 107, which is less stretchy than the first part 101 and the second part 102, is provided on the back side of one of the first parts 101. As shown in Figure 7, there are four seam allowances, designated as the first seam allowance 103, the second seam allowance 104, the third seam allowance 105, and the fourth seam allowance 106. The first seam allowance 103 and the second seam allowance 104 are sewn together by the sewing line S between the first part 101 and the second part 102. The third seam allowance 105 is sewn together by the sewing line S between the first part 101, the second part 102, and one end of one of the cotton fabrics 107a. The fourth seam allowance 106 is formed by sewing the first part 101, the second part 102, and one end of cotton fabric 107b, which is one of the cotton fabrics 107, together with a sewing line S. Then, the other end of cotton fabric 107a and the other end of cotton fabric 107b are sewn together with a sewing line S to form the fifth seam allowance 108. The distance between the sewing line S of the third seam allowance 105 and the sewing line S of the fourth seam allowance 106 in cotton fabrics 107a and 107b, which are sewn together with the fifth seam allowance 108, is set to be approximately equal to the distance between the sewing line S of the third seam allowance 105 and the sewing line S of the fourth seam allowance 106 in one of the first parts 101. As a result, when the seat cover 100 is placed over the prismatic core material 109, the cotton fabrics 107a and 107b function as restricting members so that the third seam allowance 105 and the fourth seam allowance 106 fold and come into contact with the back side of the first part 101. At this time, the fifth seam allowance 108 is pressed against the surface of the core material 109 and folds down, causing it to fold haphazardly on both sides of the stitching line S, resulting in the appearance of unwanted design lines.

[0004] The manufacturing method for the seat cover 100 is as follows: First, as shown in Figure 8, a pair of first parts 101, a pair of second parts 102, and cotton fabrics 107a and 107b are sewn together with seam lines S to form the first seam allowance 103, second seam allowance 104, third seam allowance 105, and fourth seam allowance 106. Next, as shown in Figure 9, the other end of cotton fabric 107a and the other end of cotton fabric 107b are sewn together with seam lines S to form the fifth seam allowance 108. When the completed seat cover 100 is turned inside out and placed over the core material 109, it will be in the state shown in Figure 7. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Patent No. 6981193 [Overview of the project] [Problems that the invention aims to solve]

[0006] In the seat cover described in Patent Document 1 mentioned above, only the seam allowance on one part is folded and maintained so that it abuts against the back side of the same part. As a result, the direction of the folding of the seam allowances on adjacent parts is not restricted, which could lead to defects in appearance. Furthermore, in the seat cover 100 shown in Figure 7, the folding direction of the seam allowances on adjacent parts as well as the seam allowances on one part are restricted, but the seam allowances of the cotton fabrics that act as restricting members could negatively affect the appearance.

[0007] In view of these problems, the object of the present invention is to provide a seat cover and a method for manufacturing the same that can fold in one direction the seam allowances provided at both opposing ends of a single part constituting the seat cover, without causing any defects in appearance. [Means for solving the problem]

[0008] The first invention of the present invention is a seat cover comprising a regulating member that folds the seam allowances, which are disposed at opposing ends of a single part constituting the seat cover, inward toward the single part, wherein each of the seam allowances is sewn together by a sewing line in a state in which the seam allowance of the single part, the seam allowance of an adjacent part adjacent to the single part, and the seam allowance of the regulating member, which is substantially the same dimension as the distance between the ends of the single part, are superimposed in this order, and by covering the core material, each of the seam allowances is folded by the regulating member so as to come into contact with the core material side surface of the single part from the sewing line.

[0009] According to the first invention, when the seat cover is placed over the core material, the seam allowances formed by overlapping the seam allowances at both ends of one part, the seam allowances of adjacent parts, and the seam allowances of the restricting member in this order are pressed against the restricting member and folded down so as to come into contact with the core material side of the part when the restricting member is stretched between the seam lines at both ends, thus suppressing any defects in appearance. Furthermore, since the restricting member is a single piece and there are no seam allowances to sew together with other restricting members, there is no risk of defects in appearance due to its presence.

[0010] The second invention of the present invention is characterized in that, in the first invention described above, the seat cover is cylindrical, and the one part is a strip-shaped part extending in the direction of the cylindrical axis.

[0011] According to the second invention, since the seat cover is cylindrical, when it is placed over the core material, the circumferential tension acting on one part and the regulating member makes it easy for the seam allowances at both ends to be folded in by the regulating member so that they come into contact with the core material side surface of one part.

[0012] The third invention of the present invention is a method for manufacturing a seat cover according to the second invention, comprising: a first step of sewing together a plurality of strip-shaped parts, including the one part, with the right sides facing each other, along a first stitching line extending in the direction of the cylindrical axis to form a cylindrical shape; a second step of folding the other parts, which are the parts of the seat cover other than the one part, with the right sides facing each other and stacking them on top of the unfolded one part, and then stacking the restricting member on top of them, and sewing the seam allowance of the one part, the seam allowance of the adjacent parts, and the seam allowance of the restricting member together along a second stitching line; and a third step of inverting the restricting member with respect to the one part, with respect to the one part, along the second stitching line, so that the other parts are removed to the outside from between the one part and the restricting member.

[0013] According to the third invention, a cylindrical seat cover with a single restricting member attached by sewing can be easily manufactured. [Brief explanation of the drawing]

[0014] [Figure 1] This is a perspective view of a rear car seat with an armrest fitted to it, which is an armrest cover, according to one embodiment of the present invention. [Figure 2] This is a perspective view of the armrest of the above embodiment. [Figure 3] This is a cross-sectional view taken along the line of arrow III-III in Figure 2. [Figure 4] This figure illustrates the manufacturing method for the armrest cover of the above embodiment. [Figure 5] This figure illustrates the manufacturing method for the armrest cover of the above embodiment. [Figure 6] This figure illustrates the manufacturing method for the armrest cover of the above embodiment. [Figure 7] This is a diagram illustrating a conventional seat cover. It corresponds to Figure 3. [Figure 8] This is a diagram illustrating a conventional method for manufacturing seat covers. [Figure 9] This is a diagram illustrating a conventional method for manufacturing seat covers.

Best Mode for Carrying Out the Invention

[0015] Based on FIGS. 1 to 6, an armrest cover 10 according to an embodiment of the present invention will be described. This embodiment is an example in which the present invention is applied to an armrest cover 10 that covers an armrest 4 attached to a seat back 3 of an automotive rear seat 1. In each figure, arrows indicate the respective directions when the automotive rear seat 1 is attached to an automotive body BO. In the following description, descriptions regarding directions are made based on this direction. Note that the left - right direction corresponds to the seat width direction. Here, the armrest cover 10 corresponds to the "seat cover" in the claims.

[0016] As shown in FIG. 1, the automotive rear seat 1 is a bench - type seat, and includes a seat cushion 2 that serves as a seating portion, a seat back 3 that serves as a backrest, and an armrest 4 attached to the seat back 3. The automotive rear seat 1 is attached to an automotive body BO. A storage recess 5 for storing the armrest 4 when not in use is provided at the center in the left - right direction of the seat back 3. The armrest 4 is rotatably supported between a stored state and the use state shown in FIG. 1 about a rotation axis P whose lower part extends in the left - right direction with respect to the lower part of the storage recess 5 when the armrest 4 is stored in the storage recess 5.

[0017] As shown in FIG. 2, the armrest 4 in the use state has a substantially quadrangular prism - shaped core material 6 extending in the front - rear direction, and an armrest cover 10 covering the core material 6 from above. The core material 6 is configured by covering a metal frame as a skeleton with a pad made of urethane foam, and the outer shape of the pad forms the outer shape of the armrest 4.

[0018] As shown in FIG. 3, the armrest cover 10 has a cylindrical shape with its axial direction extending in the front-rear direction, and is formed by integrating an upper surface portion 11, a lower surface portion 12, a right surface portion 13, a left surface portion 14, and a cotton cloth 15 by sewing. The upper surface portion 11, the lower surface portion 12, the right surface portion 13, and the left surface portion 14 are all members cut from a planar member in which a fabric on the surface F side and a cover pad which is a thin urethane slab pad on the back surface B side are laminated. A thin back cloth for facilitating sewing is laminated on the surface opposite to the fabric of the cover pad. The cotton cloth 15 is a woven cloth that is less likely to stretch than the upper surface portion 11, the lower surface portion 12, the right surface portion 13, and the left surface portion 14. The left-right dimensions of the upper surface portion 11 and the lower surface portion 12 and the cotton cloth 15 are set to be substantially the same. The right end portion of the upper surface portion 11 and the upper end portion of the right surface portion 13 are sewn with a sewing line S1 to form a first sewing margin 16, and the left end portion of the upper surface portion 11 and the upper end portion of the left surface portion 14 are sewn with a sewing line S2 to form a second sewing margin 17. The right end portion of the lower surface portion 12 and the lower end portion of the right surface portion 13 are sewn with a sewing line S3 to form a third sewing margin 18, and the left end portion of the lower surface portion 12 and the lower end portion of the left surface portion 14 are sewn with a sewing line S4 to form a fourth sewing margin 19. The right end portion of the cotton cloth 15 is sewn to the third sewing margin 18 with a sewing line S5, and the left end portion of the cotton cloth 15 is sewn to the fourth sewing margin 19 with a sewing line S6. Here, the lower surface portion 12, the right surface portion 13, the left surface portion 14, and the cotton cloth 15 respectively correspond to "one part", "adjacent parts", and "restricting member" in the claims. Also, the sewing lines S1 to S4 correspond to the "first sewing line" in the claims, and the sewing lines S5 and S6 correspond to the "second sewing line" in the claims.

[0019] The manufacturing method of the armrest cover 10 will be described with reference to FIGS. 4 to 6.

[0020] As shown in Figure 4, in the first step, first, the right end of the top portion 11 and the upper end of the right side portion 13 are overlapped with their surfaces F touching right sides together and sewn together along the sewing line S1 to form the first seam allowance 16. Next, the left end of the top portion 11 and the upper end of the left side portion 14 are overlapped with their surfaces F touching right sides together and sewn together along the sewing line S2 to form the second seam allowance 17. Next, the right end of the bottom portion 12 and the lower end of the right side portion 13 are overlapped with their surfaces F touching right sides together and sewn together along the sewing line S3 to form the third seam allowance 18. Next, the left end of the bottom portion 12 and the lower end of the left side portion 14 are overlapped with their surfaces F touching right sides together and sewn together along the sewing line S4 to form the fourth seam allowance 19. In this way, the top portion 11, the bottom portion 12, the right side portion 13, and the left side portion 14 are integrated to form the first intermediate body 20, which is tubular in shape. The order in which the first seam allowance 16, the second seam allowance 17, the third seam allowance 18, and the fourth seam allowance 19 are formed does not matter.

[0021] As shown in Figure 5, in the second step, the upper portion 11, right portion 13, and left portion 14 of the first intermediate body 20 are folded and overlapped on the surface F side of the lower portion 12 of the first intermediate body 20 so that the surfaces F touch each other. Then, the cotton cloth 15 is placed over it, and the right end of the cotton cloth 15 is sewn to the third seam allowance 18 with a sewing line S5, and the left end of the cotton cloth 15 is sewn to the fourth seam allowance 19 with a sewing line S6. The second intermediate body 21 is thus manufactured.

[0022] As shown in Figure 6, in the third step, in the second intermediate 21, the cotton fabric 15 is reversed relative to the bottom part 12 along the sewing lines S5 and S6 so that the top part 11, right part 13, and left part 14, which are folded and positioned between the cotton fabric 15 and the bottom part 12, are pulled out from between the bottom part 12 and the cotton fabric 15, thereby obtaining the armrest cover 10 shown in Figure 6. When this armrest cover 10 is reversed inside out and placed over the core material 6, it becomes the state shown in Figure 3.

[0023] As described above, this embodiment provides the following effects. When the armrest cover 10 is placed over the core material 6, the third seam allowance 18 and the fourth seam allowance 19 are pressed down by the cotton fabric 15 stretched between the sewing line S5 and the sewing line S6 so as to come into contact with the back surface B of the lower surface portion 12. This prevents the third seam allowance 18 from being pressed down haphazardly on both sides of the sewing line S3, which would cause the third seam allowance 18 to push up the lower surface portion 12 or the right surface portion 13 in an undisordered manner, thus preventing any appearance defects. Similarly, it prevents the fourth seam allowance 19 from being pressed down haphazardly on both sides of the sewing line S4, which would cause the fourth seam allowance 19 to push up the lower surface portion 12 or the left surface portion 14 in an undisordered manner, thus preventing any appearance defects.

[0024] Furthermore, the armrest cover 10 is cylindrical, and the upper portion 11, lower portion 12, right portion 13, left portion 14, and cotton fabric 15 are all strip-shaped and extend in the direction of the cylindrical axis. As a result, when the armrest cover 10 is placed over the core material 6, circumferential tension acts on the upper portion 11, lower portion 12, right portion 13, left portion 14, and cotton fabric 15, making it easy for the third seam allowance 18 and the fourth seam allowance 19 to be folded in so that they come into contact with the back surface B of the lower portion 12.

[0025] In the first step, the armrest cover 10 is assembled by sewing together the top part 11, bottom part 12, right side part 13, and left side part 14 with right sides facing each other using sewing lines S1, S2, S3, and S4. In the second step, the top part 11, right side part 13, and left side part 14 are folded and placed on top of the unfolded bottom part 12 with right sides facing each other, and the cotton fabric 15 is placed on top of them. The right edge of the cotton fabric 15 is sewn to the third seam allowance 18 using sewing line S5, and the left edge of the cotton fabric 15 is sewn to the fourth seam allowance 19 using sewing line S6. In the third step, the cotton fabric 15 is turned inverted relative to the bottom part 12, using sewing lines S5 and S6 as the boundary, so that the top part 11, right side part 13, and left side part 14 are pulled out from between the cotton fabric 15 and the bottom part 12. As a result, the armrest cover 10 can be easily manufactured in a simple procedure of steps 1 to 3, without requiring complex steps such as sewing together multiple pieces of cotton fabric. Here, the top portion 11, the right portion 13, and the left portion 14 correspond to the "other parts" in the claims.

[0026] Although specific embodiments have been described above, the present invention is not limited to their appearance and configuration, and various modifications, additions, and deletions are possible without altering the essence of the invention. For example, the following can be made.

[0027] 1. In the above embodiment, the present invention was applied to the armrest cover 10 inside the seat cover. However, it is not limited to this, and can be applied to other non-tubular seat covers such as the top plate portion of a seat cushion cover or the top plate portion of a seat back cover, as long as the "other part portion" placed between the "one part" and the "regulating member" in the claims can be reversed and removed to the outside after sewing.

[0028] 2. In the above embodiment, cotton cloth 15 was used as the "regulating member," but the invention is not limited to this, and other sewable materials such as nonwoven fabric or resin sheet can also be used.

[0029] 3. In the above embodiment, sewing lines S3 and S5, and sewing lines S4 and S6 are sewn separately. However, the invention is not limited to this, and when sewing with sewing lines S3 and S4, the cotton fabric 15 can be sewn at the same time, omitting sewing lines S5 and S6. [Explanation of symbols]

[0030] 1. Rear seat for automobiles 4 Armrests 6 Core material 10 Armrest Covers 11. Top section (other parts) 12. Bottom section (one part) 13. Right side (adjacent parts, other parts) 14. Left side section (adjacent parts, other parts section) 15. Cotton fabric (regulating material) 16 seam allowance 17 seam allowance 18 seam allowance 19 seam allowance 20 Intermediates 21 Intermediate B Back side F surface S1 stitching line S2 stitching line S3 stitching line S4 stitching line S5 Sewing line S6 stitching line

Claims

1. A seat cover comprising a seat cover, wherein a restricting member is provided to fold the seam allowances, which are located at both opposing ends of a single part constituting the seat cover, inward toward the single part, Each of the aforementioned seam allowances is formed by sewing together the seam allowance of one part, the seam allowance of an adjacent part adjacent to the one part, and the seam allowance of the restricting member which is approximately the same size as the distance between both ends of the one part, in this order, along with a sewing line. By covering the core material, each of the seam allowances is folded down by the regulating member so that it contacts the core material side surface of one of the parts from the sewing line. The aforementioned seat cover is cylindrical, and one of the parts is a strip-shaped piece extending in the direction of the cylindrical axis. The seam allowance of the regulating member is positioned further away from the single part than the seam allowance of the single part and the seam allowance of the adjacent part in the seat cover.

2. A seat cover comprising a regulating member that folds the seam allowances, which are disposed at both opposing ends of a single part constituting the seat cover, inward toward the single part, Each of the aforementioned seam allowances is formed by sewing together the seam allowance of one part, the seam allowance of an adjacent part adjacent to the one part, and the seam allowance of the restricting member which is approximately the same size as the distance between both ends of the one part, in this order, along with a sewing line. By covering the core material, each of the seam allowances is folded down by the regulating member so that it contacts the core material side surface of one of the parts from the sewing line. The seat cover is cylindrical, and one of the parts is a strip extending in the direction of the cylindrical axis. A first step involves sewing together multiple strip-shaped parts, including the aforementioned one part, with their right sides facing each other along a first stitching line extending in the direction of the cylindrical axis to form a cylindrical shape. A second step involves folding the other parts of the seat cover, which are parts other than the unfolded one part, inside out and placing them on top of the unfolded one part, then placing the restricting member on top of that, and sewing the seam allowance of the one part, the seam allowance of the adjacent part, and the seam allowance of the restricting member together using a second sewing line. A method for manufacturing a seat cover, comprising a third step of inverting the regulating member with respect to the one part at the second stitching line so that the other part portion is removed outward from between the one part and the regulating member.

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