Reinforcing implement for seat cover hole peripheral edge

Abstract

To provide a reinforcing implement for a seat cover hole peripheral edge, capable of appropriately extending along a curved surface of a seat cover.SOLUTION: A reinforcing implement 6 for a seat cover hole peripheral edge is configured to reinforce, from a cover back side, an annular hole peripheral edge portion 3B facing a through hole 3A of a bezel 4 formed in a seat cover 3, and includes: a reinforcing implement body 6A sewn so as to annularly extend along the hole peripheral edge portion 3B. The reinforcing implement body 6A includes: a first reinforcing portion 6B extending along a first cover region 3C, which is provided to cover a general surface 2B of the seat pad 2, of the seat cover 3; a second reinforcing portion 6C extending along a second cover region 3D, which is provided to cover a curved surface 2C curved from the general surface 2B in a direction perpendicular thereto, of the seat cover 3; and a thinned portion 6D made to be more flexible with the second reinforcing portion 6C being narrowed with respect to the first reinforcing portion 6B.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a reinforcing member for the peripheral edge of a seat cover hole. More specifically, it relates to a reinforcing member for the peripheral edge of a seat cover hole that reinforces the annular peripheral edge portion facing the through hole of the bezel formed in the seat cover from the back side of the cover.

Background Art

[0002] Patent Document 1 discloses a configuration in which a bezel covering the periphery of a rectangular through hole formed in a seat cover is assembled from the front side of the seat. Along the annular peripheral edge portion facing the through hole in the seat cover, a rectangular frame-shaped peripheral edge reinforcing member for reinforcing the peripheral edge portion from the back side of the cover is sewn. By sewing this peripheral edge reinforcing member (reinforcing plate 9 as a reinforcing member for reinforcing the peripheral edge portion of the rectangular skin opening 6a), the seat cover is positionally held so that even when a load is applied from the outside, the peripheral edge portion does not come off from the bezel and is not exposed to the outside.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above prior art, when the peripheral edge reinforcing member is set along the curved surface of the seat cover, it is necessary to appropriately follow the peripheral edge reinforcing member along the curve. Therefore, the present invention provides a seat cover peripheral edge reinforcing member that can appropriately follow along the curved surface of the seat cover.

Means for Solving the Problems

[0005] As means for solving the above problems, the seat cover peripheral edge reinforcing member of the present invention takes the following means.

[0006] That is, the first invention of the present invention is a seat cover hole peripheral edge reinforcing tool for reinforcing an annular hole peripheral edge portion facing a through hole of a bezel formed in a seat cover from the back side of the cover, and has a reinforcing tool main body sutured so as to extend annularly along the hole peripheral edge portion. The reinforcing tool main body has a first reinforcing portion extending along a first cover region covered on a general surface of a seat structure of the seat cover, a second reinforcing portion extending along a second cover region covered on a curved surface that curves in a direction perpendicular to the general surface of the seat structure of the seat cover, and a thinning portion that makes it easier to bend by making the second reinforcing portion narrower or thinner than the first reinforcing portion.

[0007] According to the first invention, the second reinforcing portion can be appropriately bent along the curved surface of the seat cover covered on the curved surface of the seat structure.

[0008] The second invention of the present invention is the seat cover hole peripheral edge reinforcing tool according to the first invention, wherein the reinforcing tool main body is composed of a single flat plate member having a certain plate thickness, and the thinning portion reduces the plate width of the second reinforcing portion.

[0009] According to the second invention, compared with the case where the thinning portion is formed to reduce the plate thickness of the second reinforcing portion, it can be formed relatively easily only by punching a plate material formed into a constant plate thickness for the reinforcing tool main body.

[0010] The third invention of the present invention is the seat cover hole peripheral edge reinforcing tool according to the first or second invention, wherein the reinforcing tool main body has a rectangular frame shape, and the second reinforcing portion forms a pair of opposing frame sides of the reinforcing tool main body.

[0011] According to the third invention, without causing torsion in the reinforcing tool main body, a pair of frame sides can be bent symmetrically with respect to each other along the curved surface of the seat structure.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Embodiments for Carrying Out the Invention

[0013] Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

[0014] 《First Embodiment》 (Schematic Configuration of Sheet Cover Hole Peripheral Edge Reinforcing Tool 6) First, the configuration of a sheet cover hole peripheral edge reinforcing tool (hereinafter, hole peripheral edge reinforcing tool) 6 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 6. In the following description, when indicating directions such as front and back, up and down, left and right, etc., the respective directions shown in each figure shall be referred to.

[0015] In addition, when indicating the "sheet" in each direction such as the "sheet width direction", it shall refer to each direction based on the sheet rising portion 1 described later. Further, in the following description, when no specific reference figure is shown, or when there is no reference numeral corresponding to the reference figure, any one of FIGS. 1 to 6 shall be appropriately referred to.

[0016] As shown in FIG. 1, the hole peripheral edge reinforcing tool 6 according to the present embodiment is applied to a seat mounted on an automobile. The seat has a seat back that serves as a backrest portion for the seated occupant and a seat cushion that serves as a seating portion. At the rear end of the seat cushion, a seat rising portion 1 that rises upward is formed so as to fill a gap between the seat cushion and the lower end portion of the seat back disposed directly above it.

[0017] The seat rising portion 1 has a seat pad 2 made of foamed urethane and a seat cover 3 made of synthetic leather that covers the seat pad 2 from the seat front side. At two positions in the sheet width direction of the seat rising portion 1, resin bezels 4 provided with caps 4C for covering an ISO - FIX type lower anchor (a fixture for fixing a child seat) (not shown) passed through the inside thereof from the seat front side are attached. Here, the seat pad 2 corresponds to the "seat structure" of the present invention.

[0018] As shown in FIG. 2, the bezel 4 is set in a state of covering the inner peripheral surface of the hole of the pad through - hole 2A by being inserted into the pad through - hole 2A formed in a rectangular hole shape in the seat pad 2 from the seat front side. Specifically, the bezel 4 is passed through a through - hole 3A formed in a rectangular hole shape in the seat cover 3 that covers the seat pad 2 and that opens the pad through - hole 2A to the outside, and is inserted into the pad through - hole 2A. Thereby, the bezel 4 is set in a state of covering the hole peripheral edge portion 3B facing the through - hole 3A of the seat cover 3 from the cover front side (see FIG. 1).

[0019] As shown in FIG. 2, the bezel 4 is snap-fitted to a base 5 that is set to be applied to the sheet pad 2 from the back side of the sheet by being inserted into the pad through-hole 2A. By this fitting, the bezel 4 is set in a state where the peripheral edge portion 3B of the hole of the sheet cover 3 and the sheet pad 2 are sandwiched from the front and back sides of the sheet between the bezel 4 and the base 5 (see FIG. 3). As a result, the bezel 4 is held in a state of being position-fixed with respect to the sheet pad 2 by the elastic force of the sheet pad 2.

[0020] The bezel 4 has a rectangular cylindrical wall 4A that is inserted into the pad through-hole 2A, and a flange 4B that extends outward in the radial direction of the cylinder from the front cylinder end of the cylinder wall 4A in the drawing. The bezel 4 also has a cap 4C that closes the front cylinder opening of the cylinder wall 4A so as to be openable and closable.

[0021] The bezel 4 is snap-fitted to the base 5 where the cylinder wall 4A faces the back side of the sheet through the pad through-hole 2A by inserting the cylinder wall 4A of the bezel 4 into the pad through-hole 2A from the front side of the sheet. Thereby, the bezel 4 covers the inner peripheral surface of the hole of the pad through-hole 2A with the cylinder wall 4A thereof, and is held in a state where the flange 4B is pressed against the peripheral edge portion 3B facing the through-hole 3A of the sheet cover 3 from the front side of the sheet (see FIG. 3).

[0022] As a result, the peripheral edge portion 3B of the sheet cover 3 is covered from the front side of the sheet by the flange 4B of the bezel 4 and is not exposed to the outside. Even if the peripheral edge portion 3B of the sheet cover 3 is covered by the flange 4B as described above, if the peripheral edge portion 3B is separated from the flange 4B due to an external load, there is a possibility that a gap that impairs the appearance will be generated between the peripheral edge portion 3B and the flange 4B.

[0023] Therefore, in order to suppress the occurrence of such a gap, a resin rectangular frame-shaped hole peripheral edge reinforcing member 6 that can reinforce the peripheral edge portion 3B from the back side of the cover is attached to the sheet cover 3. Hereinafter, the configuration of the hole peripheral edge reinforcing member 6 will be described in detail in combination with the configurations of the sheet pad 2 and the sheet cover 3 that constitute the sheet rising portion 1.

[0024] First, the configuration of the seat pad 2 will be described. As shown in FIG. 4, the seat pad 2 has a pad shape having a general surface 2B that extends flat in the seat height direction with its front side (not shown) as the top surface conforming to the rising shape of the seat rising portion 1, and a curved surface 2C that extends from the upper edge of the general surface 2B in the drawing to the upper rear side in a convex curved surface shape. The general surface 2B has a substantially flat surface shape with a slight forward bulge. The curved surface 2C has a surface shape that curves with a larger curvature than the general surface 2B.

[0025] Correspondingly, the seat cover 3 is configured to include a first cover region 3C that is covered along the general surface 2B of the seat pad 2 and a second cover region 3D that is covered along the curved surface 2C. The pad through-hole 2A is formed to penetrate a region straddling the general surface 2B and the curved surface 2C in a vertically long rectangular hole shape when viewed from the front.

[0026] Accordingly, the through-hole 3A formed in the seat cover 3 is also formed to penetrate a region straddling the first cover region 3C and the second cover region 3D in a vertically long rectangular hole shape corresponding to the hole shape of the pad through-hole 2A. As shown in FIG. 5, the hole peripheral edge reinforcing member 6 has a vertically long rectangular frame shape in which the reinforcing member main body 6A extends along a vertically long rectangular hole peripheral edge portion 3B facing the through-hole 3A of the seat cover 3. The reinforcing member main body 6A is applied and sewn to the hole peripheral edge portion 3B so as to overlap the rectangular frame shape from the back side of the cover (sewing portion 6E).

[0027] Specifically, the reinforcing member main body 6A is formed in a left-right symmetric rectangular frame shape having a pair of frame side edges A1 that extend vertically along the left and right side edges of the hole peripheral edge portion 3B in the drawing, a frame upper edge A2 that extends horizontally along the upper side edge of the hole peripheral edge portion 3B in the drawing, and a frame lower edge A3 that extends horizontally along the lower side edge of the hole peripheral edge portion 3B in the drawing.

[0028] As shown in FIG. 6, the reinforcing member main body 6A is composed of a single flat plate-shaped member formed to have a certain plate thickness. The reinforcing member main body 6A is formed by punching out the formed single flat plate-shaped member so as to have the vertically long rectangular frame shape.

[0029] In the reinforcing member main body 6A, portions excluding the upper ends of the pair of left and right frame side edges A1 thereof are formed as a first reinforcing portion 6B that extends in the sheet height direction along the first cover region 3C of the seat cover 3. Further, in the reinforcing member main body 6A, the upper end portions of the pair of left and right frame side edges A1 thereof are formed as a second reinforcing portion 6C that extends in the sheet height direction along the second cover region 3D (curved region) of the seat cover 3. Here, the pair of frame side edges A1 corresponds to the "pair of frame edges" of the present invention.

[0030] As shown in FIG. 3, the first reinforcing portion 6B is set to extend substantially straight in the sheet height direction along the general surface 2B of the seat pad 2 as the seat cover 3 is stretched over the seat pad 2. Further, the second reinforcing portion 6C is set to extend in a curved shape along the curved surface 2C of the seat pad 2 as the seat cover 3 is stretched over the seat pad 2. The second reinforcing portion 6C is configured to be more flexible than the first reinforcing portion 6B so that it can flexibly bend along this curved surface 2C.

[0031] As shown in FIG. 6, specifically, a thickness-reducing portion 6D that reduces the plate width W2 of the second reinforcing portion 6C compared to the plate width W1 of the first reinforcing portion 6B is formed in the reinforcing member main body 6A. Thereby, even if the second reinforcing portion 6C is formed with the same plate thickness as the first reinforcing portion 6B, it is configured to be more flexible in the plane direction than the first reinforcing portion 6B.

[0032] The meat-stealing part 6D reduces the plate width of the upper end portions of the pair of left and right frame side edges A1 that constitute the second reinforcing part 6C so as to steal meat from the outside to the inside. Also, accordingly, the plate width W3 of the frame upper side A2 is also reduced so as to be substantially the same width as the plate width W2 of the second reinforcing part 6C. Thereby, the frame upper side A2 that is set on the curved surface 2C (see FIG. 3) of the seat pad 2 together with the second reinforcing part 6C is also more likely to bend. As shown in FIG. 6, the plate width W4 of the frame lower side A3 is substantially the same width as the plate width W1 of the first reinforcing part 6B.

[0033] The stitching part 6E is configured to stitch the pair of left and right frame side edges A1 and the frame lower side A3 of the reinforcing tool main body 6A in a U shape when viewed from the back so that the stitching line extends along the hole peripheral edge part 3B. Specifically, the stitching part 6E is configured to continuously stitch the first reinforcing part 6B excluding the second reinforcing part 6C with a narrow plate width of the pair of left and right frame side edges A1 and the frame lower side A3 along the hole peripheral edge part 3B. That is, the stitching part 6E stitches the part excluding the part with a narrow plate width of the reinforcing tool main body 6A along the hole peripheral edge part 3B.

[0034] As shown in FIG. 3, with the above configuration, the hole peripheral edge reinforcing tool 6 is provided in a bent state along the general surface 2B and the curved surface 2C of the seat pad 2 as the seat cover 3 is stretched. And when the bezel 4 is inserted into the pad through hole 2A, the hole peripheral edge reinforcing tool 6 sandwiches the hole peripheral edge part 3B and is overlapped with the flange 4B from the back side without a gap along the shape of the flange 4B that is bent along the general surface 2B and the curved surface 2C of the seat pad 2 of the bezel 4.

[0035] Summarizing the above, the hole peripheral edge reinforcing tool 6 according to the present embodiment is configured as follows. The reference numerals in parentheses below correspond to the respective configurations shown in the above embodiment.

[0036] That is, the sheet cover hole peripheral edge reinforcing tool (6) is a reinforcing tool that reinforces the annular hole peripheral edge portion (3B) facing the through hole (3A) of the bezel (4) formed in the sheet cover (3) from the back side of the cover. The sheet cover hole peripheral edge reinforcing tool (6) has a reinforcing tool body (6A) that is sewn so as to extend annularly along the hole peripheral edge portion (3B). The reinforcing tool body (6A) includes a first reinforcing portion (6B) that extends along a first cover region (3C) that covers the general surface (2B) of the sheet structure (2) of the sheet cover (3), and a second reinforcing portion (6C) that extends along a second cover region (3D) that covers the curved surface (2C) that curves in a direction perpendicular to the general surface (2B) of the sheet structure (2) of the sheet cover (3).

[0037] Further, the reinforcing tool body (6A) has a thinning portion (6D) that makes the second reinforcing portion (6C) narrower or thinner than the first reinforcing portion (6B) so as to be easily bent. According to the above configuration, the second reinforcing portion (6C) can be appropriately bent along the curved surface of the sheet cover (3) that covers the curved surface (2C) of the sheet structure (2).

[0038] Further, the reinforcing tool body (6A) is composed of a single flat plate member having a certain plate thickness. The thinning portion (6D) is configured to reduce the plate width of the second reinforcing portion (6C). According to the above configuration, compared with the case where the thinning portion (6D) is formed so as to reduce the plate thickness of the second reinforcing portion (6C), the reinforcing tool body (6A) can be formed relatively easily only by punching a plate material formed to have a constant plate thickness.

[0039] Further, the reinforcing tool body (6A) has a rectangular frame shape. The second reinforcing portion (6C) forms a pair of opposing frame sides (A1) of the reinforcing tool body (6A). According to the above configuration, the pair of frame sides (A1) can be bent symmetrically with respect to each other along the curved surface (2C) of the sheet structure (2) without causing torsion in the reinforcing tool body (6A).

[0040] 《Second Embodiment》 Next, the configuration of the hole peripheral reinforcing tool 6 according to the second embodiment of the present invention will be described with reference to FIGS. 7 to 8. As shown in FIG. 7, in the present embodiment, the pad through hole 2D formed in the sheet pad 2 includes a general surface 2B that extends flat in the sheet height direction of the sheet pad 2, a curved surface 2C that extends so as to be convexly curved from the upper edge in the drawing of the general surface 2B to the upper rear side in the drawing, and a general surface 2E that extends flat from the upper edge in the drawing of the curved surface 2C to the rear of the sheet. The region straddling these surfaces is formed to penetrate in a rectangular hole shape.

[0041] Accordingly, in the hole peripheral reinforcing tool 6, the central portion in the length direction of the pair of left and right frame side edges A1 of the reinforcing tool main body 6A is a second reinforcing portion 6N that extends in the sheet height direction along the second cover region 3D of the sheet cover 3, that is, the region covered by the curved surface 2C of the sheet pad 2.

[0042] Further, in the hole peripheral reinforcing tool 6, the upper and lower portions excluding the central portion of the pair of left and right frame side edges A1 are first reinforcing portions 6M that extend flat along the upper and lower first cover regions 3C of the sheet cover 3, that is, the regions covered by the upper and lower general surfaces 2B and 2E of the sheet pad 2. And as shown in FIG. 8, a thickness-reducing portion 6P is formed in the reinforcing tool main body 6A such that the plate width of the second reinforcing portion 6N is reduced to a plate width W6 smaller than the plate width W5 of the first reinforcing portion 6M.

[0043] Due to this thickness-reducing portion 6P, even if the second reinforcing portion 6N is formed with the same plate thickness as the first reinforcing portion 6M, it is configured to be more easily bent in the plane direction than the first reinforcing portion 6M. The thickness-reducing portion 6P reduces the plate width of the central portion of the pair of left and right frame side edges A1 constituting the second reinforcing portion 6N so as to reduce the thickness from the outside to the inside.

[0044] The stitching portion 6Q for stitching the reinforcing member body 6A along the hole peripheral portion 3B is configured to be stitched in a reverse U-shape or U-shape in a rear view such that the stitching lines extend along the hole peripheral portion 3B between the pair of left and right frame side edges A1 and the frame upper edge A2 and between the pair of left and right frame side edges A1 and the frame lower edge A3, respectively. Specifically, the stitching portion 6Q is configured to continuously stitch the upper and lower first reinforcing portions 6M excluding the second reinforcing portion 6N with a narrow plate width of the pair of left and right frame side edges A1 and the frame upper edge A2 or the frame lower edge A3 in a reverse U-shape or U-shape along the hole peripheral portion 3B, respectively. That is, the stitching portion 6Q stitches the portion excluding the narrow portion of the plate width of the reinforcing member body 6A along the hole peripheral portion 3B.

[0045] As shown in FIG. 7, corresponding to the shape of the pad through-hole 2D, the flange 4D of the bezel 4 is also curved along the lower general surface 2B, the curved surface 2C, and the upper general surface 2E of the sheet pad 2. With the above configuration, the hole peripheral reinforcing member 6 is provided in a state of being bent along the lower general surface 2B, the curved surface 2C, and the upper general surface 2E of the sheet pad 2 as the sheet cover 3 is stretched.

[0046] Then, when the bezel 4 is inserted into the pad through-hole 2D, the hole peripheral reinforcing member 6 is configured such that the hole peripheral portion 3B is sandwiched and the flange 4D is overlapped with the back side without a gap along the shape of the flange 4D of the bezel 4. Since the configurations other than the above are the same as those shown in the first embodiment, the same reference numerals are given and the description thereof is omitted.

[0047] 《Regarding Other Embodiments》 As described above, the embodiments of the present invention have been described using two embodiments. However, the present invention can be implemented in various forms other than the above embodiments.

[0048] 1. The seat cover hole peripheral reinforcement of the present invention only needs to reinforce the annular hole peripheral part facing the through hole of the bezel formed in the seat cover from the back side of the cover, and it may be applied to either the seat back or the seat cushion. Further, the seat cover hole peripheral reinforcement may be applied not only to the seats of vehicles other than automobiles such as railways, but also to the seats of vehicles other than vehicles such as airplanes and ships.

[0049] In addition, the seat cover hole peripheral reinforcement may be applied to seats other than those for vehicles. Further, the seat cover hole peripheral reinforcement may be applied not only to the seat top surface of the seat cover, but also to the peripheral side surface of the seat or the back surface of the seat back.

[0050] 2. The bezel may be attached not only around the lower anchor of the ISO-FIX system, but also around operating members such as levers and switches. The seat structure to which the seat cover is put on may be composed of a resin member or a seat frame in addition to the seat pad. The seat cover may be made of a synthetic leather or a fabric surface material.

[0051] The through hole of the bezel formed in the seat cover may be not only in the shape of a rectangular hole, but also in the shape of a round hole, a polygonal hole other than a rectangular hole, or other irregular hole shapes. The reinforcement body only needs to extend annularly along the annular hole peripheral part facing the through hole of the seat cover, and may be formed in an appropriate shape (such as a ring shape or a polygonal frame shape other than a rectangle) corresponding to the hole shape of the through hole.

[0052] 3. The curved surface of the seat structure to which the second cover area of the seat cover is put on only needs to be curved in the direction perpendicular to the general surface from the general surface, and is not limited to a convex curved surface shape, and may be curved in a concave curved surface shape. Further, the curved surface of the seat structure may be curved not only from the general surface to the back side of the seat, but also to the front side of the seat.

[0053] When the curved surface of the sheet structure is a concave curved surface or curved toward the front side of the sheet, if the sheet cover is simply placed over the sheet pad, the second cover region may not adhere closely to the curved surface and may float. However, if the second cover region of the sheet cover is configured to adhere closely to the curved surface of the sheet structure by attaching the bezel, the second reinforcing portion of the reinforcing tool body can be appropriately bent according to the shape of the curved surface in accordance with the attachment of this bezel.

[0054] That is, the second reinforcing portion of the reinforcing tool body may be bent according to the shape of the curved surface of the sheet structure not only by the tension caused by the stretching of the sheet cover but also by being pressed by the bezel when the bezel is attached after the sheet cover is stretched. Further, the second reinforcing portion of the reinforcing tool body may be configured such that its bending rigidity is set so as to be appropriately adapted to the shape of the curved surface of the sheet structure by both the tension accompanying the stretching of the sheet cover and the pressing force caused by the attachment of the bezel.

[0055] 4. The material removal portion that makes the second reinforcing portion of the reinforcing tool body more easily bendable than the first reinforcing portion may reduce not only the plate width of the second reinforcing portion but also the plate thickness of the second reinforcing portion. Further, the material removal portion may reduce both the plate width and the plate thickness of the second reinforcing portion.

[0056] 5. The sewing portion that sews the reinforcing tool body along the peripheral edge of the hole does not necessarily have to sew such that the sewing line continuously extends along the center of each frame side of the reinforcing tool body. For example, as shown in FIG. 9, the sewing portion 6R may sew such that the sewing line bends at a right angle and extends along each frame side A1 and the lower frame side A3 of the reinforcing tool body 6A. Further, as shown in FIG. 10, the sewing portion 6S may sew such that the sewing line extends intermittently along each frame side A1 and the lower frame side A3 of the reinforcing tool body 6A. The same applies when the reinforcing tool body has the configuration shown in the second embodiment.

Explanation of Reference Numerals

[0057] 1 Sheet rising portion 2 Sheet Pad (Sheet Structure) 2A Pad Through-Hole 2B General Surface 2C Curved Surface 2D Pad Through-Hole 2E General Surface 3 Sheet Cover 3A Through-Hole 3B Hole Peripheral Portion 3C First Cover Region 3D Second Cover Region 4 Bezel 4A Cylinder Wall 4B Flange 4C Cap 4D Flange 5 Base 6 Sheet Cover Hole Peripheral Reinforcement 6A Reinforcement Body A1 Frame Side (Pair of Frame Sides) A2 Frame Upper Side A3 Frame Lower Side 6B First Reinforcement Portion 6C Second Reinforcement Portion 6D Material Theft Portion 6E Stitching Portion 6M First Reinforcement Portion 6N Second Reinforcement Portion 6P Material Theft Portion 6Q Stitching Portion 6R Stitching Portion 6S Stitching Portion W1 Plate Width W2 Plate Width W3 Plate Width W4 Plate Width W5 Plate Width W6 Plate Width

Claims

1. A sheet cover hole peripheral edge reinforcing tool for reinforcing, from the back side of the cover, an annular hole peripheral edge portion facing a through hole of a bezel formed in a sheet cover, comprising: a reinforcing tool body sewn to extend annularly along the hole peripheral edge portion; the reinforcing tool body having a first reinforcing portion extending along a first cover region covering a general surface of a sheet structure of the sheet cover, a second reinforcing portion extending along a second cover region covering a curved surface that curves in a direction perpendicular to the general surface of the sheet structure of the sheet cover, and a thinning portion that makes the second reinforcing portion narrower or thinner than the first reinforcing portion to make it easier to bend, the sheet cover hole peripheral edge reinforcing tool.

2. The sheet cover hole peripheral edge reinforcing tool according to Claim 1, wherein: the reinforcing tool body is formed of a single flat plate-like member having a constant plate thickness; the thinning portion is a sheet cover hole peripheral edge reinforcing tool that reduces the plate width of the second reinforcing portion.

3. The sheet cover hole peripheral edge reinforcing tool according to Claim 1 or Claim 2, wherein: the reinforcing tool body has a rectangular frame shape; the second reinforcing portion forms a pair of opposing frame sides of the reinforcing tool body, the sheet cover hole peripheral edge reinforcing tool.

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