Skin material fastening tool

Abstract

This skin material fastening tool (100) comprises a suspender (10) that can be attached to a skin material, and a clip (30) that locks the suspender (10) and can be installed in a groove of a cushion material. The suspender (10) has a locked part (25) that is formed on the distal-end side of a central plate-form part (20) and has a pair of protrusions (26), and a flange part (21) that is formed closer to the proximal-end end side of the central plate-form part (20) than the locked part (25) and protrudes in the thickness direction of the suspender (10) from a side surface (20a) of the central plate-form part (20). When the suspender (10) is inserted obliquely into the clip (30), the flange part (21) does not come into contact with a clip base part (38) before a distal-end part (20b) of the locked part (25) comes into contact with the inner surface of a holding part (33) at an angle at which fastening is possible, said angle being formed by the vertical direction of the clip (30) and the insertion direction of the suspender (10) when the locked part (25) can be engaged by elastically deforming a pair of locking pieces (37).

Description

Skin material fixing tool

[0001] The present invention relates to a skin material fixing tool for stretching a skin material covering the surface of a chair, seat, etc. over the seat, etc. and fixing the edge of the skin material at a predetermined position.

[0002] Conventionally, in chairs used indoors, vehicle seats, etc., in many cases, a cushion material or a flexible pad is installed on the part that touches the human body such as the seat surface and the backrest, and the surface thereof is covered with a skin material. Various structures are adopted for covering and fixing such a skin material. In particular, a skin material fixing tool having a structure that can easily and neatly fix the skin material and can conceal the edge of the skin material in terms of appearance is used.

[0003] As a skin material fixing tool, while a suspender is attached to the end of the skin material, a clip that can engage with the suspender is embedded in the skin material fixing groove of the cushion material.

[0004] For example, Patent Document 1 discloses a listing bead for fixing a trim cover to a clip embedded in a foam base material. The listing bead has a top formed flat at the upper part. The top is pressed by an operator when the listing bead is incorporated into the clip. Thereby, the bead engages with the barb of the clip, and the trim cover is fixed.

[0005] U.S. Patent No. 9,834,431

[0006] However, in the attachment structure of the skin material described in Patent Document 1, when engaging the listing bead (suspender) with the clip, due to the tension of the skin material, etc., the posture of the suspender is not stable, and the pressed part of the suspender interferes with the clip or the cushion material, making it difficult to completely engage the suspender with the clip in some cases.

[0007] The present invention has been made in view of the above problems, and its object is to provide a skin material fixing tool that can easily and reliably fix the skin material.

[0008] The above object of the present invention is achieved by the following configuration: [1] A skin material fastener (100) for fastening a skin material (18) to a cushion material (16), comprising: a suspender (10) that can be attached to the skin material (18); and a clip (30) that locks the suspender (10) and can be installed in a groove (16a) of the cushion material (16), The suspenders (10) include a strip-shaped member (12) fixed to the edge (18a) of the surface material (18), a central plate-shaped portion (20) formed along the longitudinal direction of the strip-shaped member (12) on the edge portion (12a) of the strip-shaped member (12), a locking portion (25) formed on the tip side of the central plate-shaped portion (20) and having a pair of protrusions (26) projecting from the side surface (20a) of the central plate-shaped portion (20) to both sides in the thickness direction of the suspenders (10), and a flange portion (21) formed on the base end side of the central plate-shaped portion (20) than the locking portion (25) and projecting from the side surface of the central plate-shaped portion (20) in the thickness direction of the suspenders (10), The clip (30) has a bottom wall (34) and a pair of left and right side walls (35) extending left and right and upward from the bottom wall (34), a holding portion (33) capable of holding a part of the suspender (10), a pair of left and right locking pieces (37) extending from the upper part of the holding portion (33) toward each other and capable of engaging the suspender (10), and a plate-shaped clip base (38) extending toward the outer surface of the holding portion (33) and capable of being fixed to the cushioning material (16). When the suspender (10) is inserted diagonally into the clip (30), the flange portion (21) does not contact the clip base portion (38) before the tip portion (20b) of the locking portion (25) contacts the inner surface of the holding portion (33) at the fastening angle formed by the vertical direction of the clip (30) and the insertion direction of the suspender (10) when the locking portion (25) is elastically deformed to engage with the pair of locking pieces (37), characterized in that when the suspender (10) is inserted diagonally into the clip (30), the flange portion (21) does not contact the clip base portion (38).

[0009] According to the present invention, a fastener for securing a surface material can be provided that can easily and reliably fix the surface material.

[0010] Figure 1 is a perspective view of a skin material fastener according to an embodiment of the present invention. Figure 2 is an exploded perspective view of the suspenders and clip of the skin material fastener according to an embodiment of the present invention. Figure 3 is a plan view of the skin material fastener according to an embodiment of the present invention, viewed from the longitudinal direction. Figure 4(a) is a plan view of the suspenders viewed from the longitudinal direction. Figure 4(b) is a plan view of the suspenders viewed from the left and right directions. Figure 5(a) is a plan view of the clip viewed from the longitudinal direction. Figure 5(b) is a plan view of the clip viewed from the left and right directions. Figure 6 is a plan view of the skin material fastener, viewed from the longitudinal direction, with the suspenders tilted relative to the clip. Figure 7 is a plan view showing the dimensional relationship between the suspenders and the clip.

[0011] As shown in Figures 1 to 3, the upholstery fastener 100 is used to fasten the upholstery material 18 of a seat to the cushion material 16 of a seat in a vehicle or the like, and comprises a suspender 10 and a clip 30 for securing the suspender 10.

[0012] The surface material 18 is leather, cloth, synthetic leather sheet, etc., that covers the surface of the cushion material 16, and the suspenders 10 can be attached to the surface material 18. The cushion material 16 is a synthetic resin foam material such as foamed polyurethane molded into the shape of a seat, and grooves 16a for fastening the surface material are formed in the cushion material 16, and the clips 30 can be installed in the grooves 16a of the cushion material 16. Therefore, when the suspenders 10 are fastened to the clips 30, the surface material 18 is stretched to a predetermined position on the surface of the cushion material 16.

[0013] In the following description of the skin material fastener 100, the directions will be explained using the mutually orthogonal XYZ axis directions as a reference, as shown in Figures 1 to 3 and Figures 5 to 7. The X-axis direction coincides with the longitudinal direction of the suspenders 10 and clips 30, and coincides with the direction in which the edges of the skin material 18 and the wire members 15 extend. The Z-axis direction, which is orthogonal to the X-axis direction, coincides with the depth direction of the groove 16a of the cushioning material 16 and the holding portion 33 of the clip 30, which will be described later, and is called the vertical direction. Furthermore, the direction orthogonal to the X-axis direction and the Z-axis direction is called the Y-axis direction, and is called the left-right direction. The direction parallel to this left-right direction is also called the lateral direction.

[0014] As shown in Figures 1 to 4(b), the suspenders 10 consist of a long, strip-shaped member 12 made of woven fabric or the like, and a clip-locking member 14 provided along the longitudinal direction of the strip-shaped member 12. The clip-locking member 14 is molded from a thermoplastic resin such as polypropylene, polyethylene, polyvinyl chloride, polystyrene, or polybutylene terephthalate, and is integrally insert-molded along the longitudinal direction at the edge 12a of the strip-shaped member 12 opposite to the edge 12b to which the outer material 18 is fixed. The clip-locking member 14 is used to attach clips 30, etc., which will be described later. The edge 18a of the outer material 18 is sewn and fixed to the edge 12b of the strip-shaped member 12 with sewing thread.

[0015] The strip-shaped member 12 is a long, strip-shaped member with a constant width in the vertical direction (Z-axis direction) and a long length in the longitudinal direction (X-axis direction). It is formed from a woven fabric, nonwoven fabric, knitted fabric, synthetic leather, or a laminate of synthetic leather and fabric having a strength comparable to that of the surface material 18. The material constituting the strip-shaped member 12 can be selected from nylon, polyester, acrylic, or other appropriate materials. The strip-shaped member 12 may be a separate component from the clip locking member 14, or it may be formed integrally with the clip locking member 14 from resin. Because the clip locking member 14 and the strip-shaped member 12 are made of the above materials, the suspenders 10 have flexibility in the vertical direction of the central plate-shaped portion 20.

[0016] The clip locking member 14, which is integrally provided along the edge portion 12a of the strip-shaped member 12, is formed by insert molding thermoplastic resin so as to sandwich the edge portion 12a of the strip-shaped member 12, and is formed along the longitudinal direction of the strip-shaped member 12 to the same length as the strip-shaped member 12.

[0017] The clip locking member 14 has a side surface 20a that is parallel to the surface of the strip-shaped member 12, and includes a central plate-like portion 20 that is provided in a long, rectangular shape with a constant width along the longitudinal direction on the edge portion 12a of the strip-shaped member 12. The central plate-like portion 20 is formed to continuously cover both the left and right side surfaces and the lower end surface of the strip-shaped member 12 so as to clamp the strip-shaped member 12, and the lower end is formed in a curved shape.

[0018] The suspenders 10 have a locking portion 25 formed on the lower side in the vertical direction, which is the tip side of the central plate-shaped portion 20, and a pair of protrusions 26 that project from the side surface 20a of the central plate-shaped portion 20 to both sides in the left-right direction, which is the thickness direction of the suspenders 10, and flange portions 21 formed on the upper side in the vertical direction, which is on the base end side of the central plate-shaped portion 20, which is closer to the locking portion 25, and that project from the side surface 20a of the central plate-shaped portion 20 to both sides in the left-right direction, which is the thickness direction of the suspenders 10. Multiple locking portions 25 and flange portions 21 are formed intermittently at predetermined intervals along the longitudinal direction of the suspenders 10. The flange portions 21 may be formed on only one side in the left-right direction of the suspenders 10, or they may be provided continuously in the longitudinal direction.

[0019] In particular, as shown in Figures 3, 4(a), and 4(b), the suspender 10 has a convex portion 26 and a flange portion 21 arranged symmetrically with respect to the vertical central axis of the central plate-like portion 20. The convex portion 26 extends from the side surface 20a of the central plate-like portion 20 to the top portion 26a in the left-right direction of the convex portion 26, and has a slope 26b that moves away from the side surface 20a of the central plate-like portion 20 as it moves from the tip side to the base side, and a return surface 26c that extends from the side surface 20a of the central plate-like portion 20 to the top portion 26a. The locking portion 25 is formed in an arrowhead shape when viewed from the longitudinal direction by the tip portion 20b of the central plate-like portion 20, the top portion 26a of the convex portion 26, the slope 26b, and the return surface 26c.

[0020] In the illustrated example, the flange portion 21 is formed with a width in the left-right direction greater than that of the convex portion 26, extending from the side surface 20a of the central plate-like portion 20. The flange portion 21 extends to the top 21a in the left-right direction of the flange portion 21 and has an upper surface 21b which is a plane facing approximately upward in the vertical direction and a lower surface 21c which faces approximately downward in the vertical direction.

[0021] The lower surface 21c of the flange portion 21 is inclined away from the tip side of the suspender 10 (the tip side 20b of the central plate-like portion 20) as it approaches the top 21a of the flange portion 21. Also, the vertical width of the flange portion 21 decreases as it moves from the base connected to the central plate-like portion 20 towards the top 21a of the flange portion 21.

[0022] As shown in Figures 1 to 3, 5(a) and 5(b), the clip 30 has a plurality of clip portions 31 that engage with the locked portion 25, and a connecting portion 32 that connects the plurality of clip portions 31 in the longitudinal direction.

[0023] The clip 30 is formed by extrusion molding with a metal wire member 15 inserted, and the wire member 15 extends longitudinally across a plurality of clip portions 31 and a plurality of connecting portions 32.

[0024] The clip portion 31 of the clip 30 includes a holding portion 33 that can hold a part of the suspender 10 so as to cover it, a pair of left and right locking pieces 37 that extend from the upper part of the holding portion 33 toward each other and can engage with the locking portion 25 of the suspender 10, and a plate-shaped clip base portion 38 that extends toward the outer surface of the holding portion 33 and can be fixed to the cushioning material 16.

[0025] The holding portion 33 has a bottom wall 34 located on the lower side in the vertical direction and a pair of left and right side walls 35 extending from the bottom wall 34 to the left and right and upward, and the cross-sectional shape of the plane perpendicular to the longitudinal direction is U-shaped. The outer surface 34b of the bottom wall 34 and the outer surface 35b of the side walls 35 can come into contact with the inner surface of the groove 16a of the cushioning material 16. In addition, the inner surface 34a of the bottom wall 34 and the inner surface 35a of the side walls 35 can come into contact with the locking portion 25.

[0026] The clip base 38 extends from the upper part of the outer surface 35b of the pair of left and right side walls 35 in the left-right and longitudinal directions. The clip base 38 is fixed to both the left and right sides of the opening of the groove 16a of the cushioning material 16 by insert molding or the like. The clip base 38 is formed in a plate shape with a constant thickness in the vertical direction. The clip base 38 also has an elongated hole 38a that penetrates the clip base in the vertical direction and extends in the longitudinal direction. The cushioning material 16 is molded to fill the elongated hole 38a. As a result, the clip base 38 is stably fixed to the cushioning material 16.

[0027] A pair of locking pieces 37 are formed on the upper part of the opposing inner surfaces 35a of the left and right side walls 35. The pair of locking pieces 37 are formed across the entire width in the longitudinal direction of the holding portion 33. Furthermore, the pair of locking pieces 37 are provided so that they protrude downwards in the vertical direction towards the tip and move closer to each other.

[0028] The connecting portion 32 connects the longitudinal ends of the bottom walls 34 of adjacent clip portions 31 in the longitudinal direction, and the wire member 15 is insert-molded inside.

[0029] In particular, as shown in Figure 3, the thickness of the central plate-like portion 20 of the suspenders 10 in the left-right direction is such that it can be inserted into the left-right gap at the tips of the pair of locking pieces 37 and is formed to have a constant thickness in the longitudinal direction. In this embodiment, the thickness of the central plate-like portion 20 is smaller than the gap at the tips of the pair of locking pieces 37.

[0030] Furthermore, the width of the locking portion 25 in the thickness direction of the suspender 10 is greater than the gap between the tips of the pair of locking pieces 37, and smaller than the gap in the left-right direction on the inner surface 35a of the pair of side walls 35.

[0031] Here, the assembly method of the outer material fastener 100 will be explained. When fastening the outer material 18 to the cushion material 16, first, the outer material 18 is positioned so as to cover the cushion material 16. Next, the flange portion 21 of the suspender 10 connected to the outer material 18 is pressed in the vertical direction, thereby inserting the suspender 10 into the holding portion 33 of the clip 30 fixed to the cushion material 16.

[0032] At this time, the inclined surface 26b constituting the locking portion 25 of the suspender 10 comes into contact with the pair of locking pieces 37, causing the pair of locking pieces 37 to elastically deform and widening the gap between them in the left-right direction. When the locking portion 25 overcomes the pair of locking pieces 37 and the top 26a of the convex portion 26 reaches below the tip of the locking piece 37 in the vertical direction, as shown in Figure 1, the pair of locking pieces 37 return to their original shape, and the return surface 26c constituting the locking portion 25 of the suspender 10 engages with the pair of locking pieces 37. As a result, the suspender 10 is held in place by the holding portion 33 of the clip 30.

[0033] Here, as shown in Figure 6, when inserting the suspenders 10, the tension of the outer material 18 may cause the suspenders 10 to tilt in the left-right direction, and the suspenders 10 may be inserted diagonally into the clip 30. Hereafter, when inserting the suspenders 10 into the holding portion 33 of the clip 30, the direction in which the suspenders 10 move toward the clip 30, that is, the direction from the base end to the tip end of the central plate-like portion 20 of the suspenders 10, will be referred to as the insertion direction. In Figures 1 to 3, the state in which the suspenders 10 are inserted straight into the clip 30 and the insertion direction is parallel to the vertical direction (Z-axis direction) was explained. On the other hand, as shown in Figure 6, when the suspenders 10 are inserted diagonally into the clip 30, the insertion direction of the suspenders 10 and the vertical direction (Z-axis direction) of the clip 30 are not parallel when viewed from the longitudinal direction.

[0034] When viewed from the longitudinal direction, the angle between the insertion direction of the suspender 10 and the vertical direction of the clip 30 is defined as the range of angles in which the locking portion 25 can elastically deform the pair of locking pieces 37 and engage, regardless of the presence or absence of the flange portion 21, as the fastening angle θ.

[0035] When the suspenders 10 are inserted into the holding portion 33 of the clip 30 while tilted at the fastening angle θ, the locked portion 25 overcomes the pair of locking pieces 37, and the tops 26a of the pair of protrusions 26 both reach below the tips of the locking pieces 37 in the vertical direction. As a result, the suspenders 10 and the clip 30 become engaged. On the other hand, when the suspenders 10 are inserted into the holding portion 33 while tilted at an angle greater than the fastening angle θ, the locked portion 25 cannot overcome the pair of locking pieces 37, and one or both of the tops 26a of the pair of protrusions 26 are positioned above the tips of the locking pieces 37 in the vertical direction, resulting in the suspenders 10 and the clip 30 not being engaged.

[0036] Even if the suspenders 10 are inserted diagonally into the clip 30, as long as the inclination is within the fastening angle θ, the flange portion 21 will not contact the clip base 38 before the tip portion 20b of the locking portion 25 (the tip portion 20b of the central plate-shaped portion 20) contacts the inner surfaces 34a and 35a of the holding portion 33. If the suspenders 10 are further pushed in after they have been inserted diagonally into the clip 30 and engaged with the clip, the tip portion 20b of the locking portion 25 will contact the inner surface 34a or 35a. In the example shown in Figure 6, the flange portion 21 contacts the clip base 38 only when the tip portion 20b of the locking portion 25 contacts the inner surface 34a or 35a.

[0037] Refer to Figure 7 to explain the specific dimensional relationships. Let D be the vertical depth from the upper surface of the clip base 38 to the center of the inner surface 34a of the bottom wall 34 in the left-right direction. Let H be the distance from the center of the suspender 10 in the thickness direction, which is the axis of symmetry of the suspender 10, to the end of the flange portion 21c on the top 21a side of the lower surface 21c. The end of the lower surface 21c on the top 21a side is the contact point 21d with the clip base 38, and in the example shown in Figure 7, it is the boundary between the straight portion constituting the lower surface 21c and the curved portion constituting the top 21a in a cross section perpendicular to the longitudinal direction of the lower surface 21c. At this time, the distance L in the insertion direction of the suspender 10 between the end of the flange portion 21c on the top 21a side of the lower surface 21c and the tip 20b of the locking portion 25 satisfies L > D / cosθ + Htanθ. When the suspenders 10 satisfy this dimensional relationship and the inclination of the suspenders 10 is at the fastening angle θ, the flange portion 21 does not come into contact with the clip base portion 38 before the tip portion 20b of the locking portion 25 comes into contact with the inner surfaces 34a and 35a. Even after the tip portion 20b comes into contact with the inner surfaces 34a and 35a, the flange portion 21 and the clip base portion 38 do not need to come into contact.

[0038] Furthermore, when the suspender 10 is inserted straight into the clip 30 and the insertion direction is parallel to the vertical direction, the flange portion 21 does not come into contact with the clip base portion 38 before and after the tip portion 20b of the locking portion 25 comes into contact with the inner surfaces 34a and 35a.

[0039] As described above, when the suspenders 10 are inserted diagonally into the clip 30 within the range of the fastening angle θ, the flange portion 21 does not come into contact with the clip base portion 38 before the tip portion 20b of the locking portion 25 comes into contact with the inner surfaces 34a and 35a of the holding portion 33. This prevents interference between the flange portion 21 and the clip base portion 38, allowing the suspenders 10 to be securely engaged with the clip 30, and enabling the outer material 18 to be easily and reliably fixed to the cushioning material 16.

[0040] When viewed from the longitudinal direction, the angle α of the inclined surface 26b with respect to the side surface 20a of the central plate-like portion 20 is greater than the fastening angle θ. Furthermore, the length l of the locking portion 25 in the insertion direction is preferably 3 / 4 or less of the depth d from the tip of the locking piece 37 of the holding portion 33 to the inner surface 34a of the bottom wall 34. Moreover, as described above, the width of the locking portion 25 in the thickness direction of the suspender 10 is smaller than the gap in the left-right direction on the inner surface 35a of the pair of side walls 35. And the thickness of the central plate-like portion 20 is smaller than the gap in the left-right direction at the tip of the pair of locking pieces 37. As a result, even when the suspender 10 is inserted at an angle, the locking portion 25 can pass over the locking piece 37, making it easier for the suspender 10 and the clip 30 to engage.

[0041] Although various embodiments have been described above with reference to the drawings, it goes without saying that the present invention is not limited to these examples. It is clear to those skilled in the art that various modifications or alterations can be conceived within the scope of the claims, and these will naturally also fall within the technical scope of the present invention.

[0042] As described above, the following is disclosed in this specification: [1] A skin material fastener (100) for fastening a skin material (18) to a cushion material (16), comprising: a suspender (10) that can be attached to the skin material (18); and a clip (30) that locks the suspender (10) and can be installed in a groove (16a) of the cushion material (16), The suspenders (10) include a strip-shaped member (12) fixed to the edge (18a) of the surface material (18), a central plate-shaped portion (20) formed along the longitudinal direction of the strip-shaped member (12) on the edge portion (12a) of the strip-shaped member (12), a locking portion (25) formed on the tip side of the central plate-shaped portion (20) and having a pair of protrusions (26) projecting from the side surface (20a) of the central plate-shaped portion (20) to both sides in the thickness direction of the suspenders (10), and a flange portion (21) formed on the base end side of the central plate-shaped portion (20) than the locking portion (25) and projecting from the side surface (20a) of the central plate-shaped portion (20) in the thickness direction of the suspenders (10), The clip (30) has a bottom wall (34) and a pair of left and right side walls (35) extending left and right and upward from the bottom wall (34), a holding portion (33) capable of holding a part of the suspender (10), a pair of left and right locking pieces (37) extending from the upper part of the holding portion (33) toward each other and capable of engaging the suspender (10), and a plate-shaped clip base (38) extending toward the outer surface of the holding portion (33) and capable of being fixed to the cushioning material (16). When the suspenders (10) are inserted diagonally into the clip (30), the flange portion (21) does not contact the clip base portion (38) before the tip portion (20b) of the locking portion (25) contacts the inner surface of the holding portion (33) at the fastening angle formed by the vertical direction of the clip (30) and the insertion direction of the suspenders (10) when the locking portion (25) elastically deforms the pair of locking pieces (37) to engage. This configuration provides a fastener for skin materials that can easily and reliably fix skin materials.

[0043] [2] Let the vertical depth from the upper surface of the clip base portion (38) of the holding portion (33) to the inner surface of the bottom wall (34) be D, the distance from the central portion in the thickness direction of the suspender (10) to the end portion on the top portion (21a) side of the lower surface of the flange portion (21) be H, and the fastening possible angle be θ. When the distance L in the insertion direction of the suspender (10) between the end portion on the top portion (21a) side of the lower surface of the flange portion (21) and the tip portion (20b) of the engaged portion (25) satisfies L > D / cosθ + Htanθ, the skin material fastener (100) according to [1] is characterized in that. According to this configuration, interference between the clip base portion and the flange portion can be avoided, and even when the suspender is inserted obliquely, the suspender and the clip can be easily engaged.

[0044] [3] The convex portion (26) extends to the top portion (26a) of the convex portion (26), and has a slope (26b) formed so as to be separated from the side surface (20a) of the central plate-like portion (20) from the tip side to the base end side of the central plate-like portion (20). The skin material fastener (100) according to [1] or [2] is characterized in that the slope (26b) can contact the locking piece (37) when the suspender (10) is inserted. According to this configuration, a skin material fastener that can simply and surely fix the skin material can be provided.

[0045] [4] The length in the insertion direction of the engaged portion (25) is characterized in that it is 3 / 4 or less of the depth from the tip portion of the locking piece (37) of the holding portion (33) to the bottom wall (34). The skin material fastener (100) according to any one of [1] to [3] is characterized in that. According to this configuration, even when the suspender is inserted obliquely, the engaged portion can overcome the locking piece, and the suspender and the clip can be easily engaged.

[0046] [5] The thickness of the central plate-like portion (20) is characterized in that it is smaller than the gap in the left-right direction at the tip portions of the pair of locking pieces (37). The skin material fastener (100) according to any one of [1] to [4] is characterized in that. According to this configuration, even when the suspender is inserted obliquely, the engaged portion can overcome the locking piece, and the suspender and the clip can be easily engaged.

[0047] [6] The skin material fixing tool (100) according to any one of [1] to [5], wherein the width of the suspender (10) in the thickness direction is smaller than the horizontal clearance on the inner surfaces of the pair of side walls (35). According to this configuration, even when the suspender is inserted obliquely, the engaged portion can overcome the locking piece, facilitating the engagement between the suspender and the clip.

[0048] [7] The skin material fixing tool (100) according to any one of [1] to [6], wherein the lower surface of the flange portion (21) is inclined in a direction away from the tip side of the central plate-like portion (20) as it goes toward the top (21a) side of the flange portion (21). According to this configuration, interference between the clip base and the flange portion can be avoided, and even when the suspender is inserted obliquely, the engagement between the suspender and the clip is facilitated.

[0049] 10 Suspender 12 Belt-like member 12a, 12b Edge portion 14 Clip locking member 15 Wire member 16 Cushion material 16a Groove 18 Skin material 18a Edge 20 Central plate-like portion 20b Tip portion 21 Flange portion 21a Top 21b Upper surface 21c Lower surface 21d Contact point 25 Engaged portion 26 Protrusion 26a Top 26b Slope 26c Return surface 30 Clip 31 Clip portion 32 Connecting portion 33 Holding portion 34 Bottom wall 35 Side wall 34a, 35a Inner surface 34b, 35b Outer surface 37 Locking piece 38 Clip base 38a Long hole 100 Skin material fixing tool

Claims

1. A fastener (100) for fastening a surface material (18) to a cushioning material (16), comprising: a suspender (10) that can be attached to the surface material (18); and a clip (30) that locks the suspender (10) and can be installed in a groove (16a) of the cushioning material (16), The suspenders (10) include a strip-shaped member (12) fixed to the edge (18a) of the surface material (18), a central plate-shaped portion (20) formed along the longitudinal direction of the strip-shaped member (12) on the edge portion (12a) of the strip-shaped member (12), a locking portion (25) formed on the tip side of the central plate-shaped portion (20) and having a pair of protrusions (26) projecting from the side surface (20a) of the central plate-shaped portion (20) to both sides in the thickness direction of the suspenders (10), and a flange portion (21) formed on the base end side of the central plate-shaped portion (20) than the locking portion (25) and projecting from the side surface (20a) of the central plate-shaped portion (20) in the thickness direction of the suspenders (10), The clip (30) has a bottom wall (34) and a pair of left and right side walls (35) extending left and right and upward from the bottom wall (34), a holding portion (33) capable of holding a part of the suspender (10), a pair of left and right locking pieces (37) extending from the upper part of the holding portion (33) toward each other and capable of engaging the suspender (10), and a plate-shaped clip base (38) extending toward the outer surface of the holding portion (33) and capable of being fixed to the cushioning material (16). When the suspender (10) is inserted diagonally into the clip (30), the flange portion (21) does not contact the clip base portion (38) before the tip portion (20b) of the locking portion (25) contacts the inner surface of the holding portion (33) at the fastening angle formed by the vertical direction of the clip (30) and the insertion direction of the suspender (10) when the locking portion (25) is elastically deformed to engage with the pair of locking pieces (37), characterized in that when the suspender (10) is inserted diagonally into the clip (30), the flange portion (21) does not contact the clip base portion (38).

2. When the vertical depth from the upper surface of the clip base (38) of the holding portion (33) to the inner surface of the bottom wall (34) is D, the distance from the center of the thickness direction of the suspender (10) to the end on the top (21a) side of the lower surface of the flange portion (21) is H, and the fastening angle is θ, the distance L in the insertion direction of the suspender (10) between the end on the top (21a) side of the lower surface of the flange portion (21) and the tip (20b) of the locking portion (25) satisfies L > D / cosθ + Htanθ, characterized in that the surface material fastener (100) according to claim 1.

3. The convex portion (26) has a slope (26b) that extends to the top (26a) of the convex portion (26) and is formed so as it moves from the tip side to the base side of the central plate-like portion (20), and the slope (26b) is capable of contacting the locking piece (37) when the suspender (10) is inserted, characterized in that the skin material fastener (100) according to claim 1 or 2.

4. The skin material fastener (100) according to claim 3, characterized in that the length of the locking portion (25) in the insertion direction is 3 / 4 or less of the depth from the tip of the locking piece (37) of the holding portion (33) to the bottom wall (34).

5. The surface material fastener (100) according to claim 3, characterized in that the thickness of the central plate-like portion (20) is smaller than the gap in the left-right direction at the tips of the pair of locking pieces (37).

6. The fastening device (100) according to claim 3, characterized in that the width of the suspender (10) in the thickness direction of the locking portion (25) is smaller than the gap in the left-right direction on the inner surfaces of the pair of side walls (35).

7. The surface fastener (100) according to claim 3, characterized in that the lower surface of the flange portion (21) is inclined in a direction away from the tip side of the central plate-like portion (20) as it approaches the top (21a) side of the flange portion (21).

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