Fastening structure

Abstract

To provide a resin member capable of suppressing deformation of a pedestal holding a fastening member for fastening the resin member to a structure.SOLUTION: A fastening structure for fastening a resin member to a structure with a fastening member 10, the fastening structure including the resin member and a reinforcing member 8, the resin member including a plate-shaped portion 22 extending in a first direction and a second direction intersecting the first direction, an opening 5 of the plate-shaped portion penetrating in a third direction, and a pedestal 6 adjacent to the opening and protruding from the plate-shaped portion toward the structure, the pedestal includes a pedestal plate 61 facing the structure and an insertion hole into which the fastening member is inserted and which is open to the opening side, the reinforcing member includes a first reinforcing piece 81 located on the structure side and a second reinforcing piece 82 located on a side opposite to the structure, the first reinforcing piece is in contact with the pedestal plate so as to cover both parts divided by the insertion hole from the structure side at an end portion on the opening side, and the second reinforcing piece is in contact with the plate-shaped portion.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a fastening structure for fastening a resin member to a structure using a fastening member. [Background technology]

[0002] Patent Documents 1 and 2 disclose fastening structures for resin members to be attached to a vehicle. Patent Document 1 discloses a clip mounting base that protrudes from a main body and holds a clip. Patent Document 2 discloses an attachment structure for attaching a spoiler to a vehicle body. The attachment structure includes an attachment base for holding a fixing member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2021-062839 [Patent Document 2] Japanese Patent Application Publication No. 2024-001917 Summary of the Invention [Problem to be solved by the invention]

[0004] Resin members such as spoilers may be deformed by receiving an unintended load such as a collision with an object. Even in such an event, it is desirable for the resin member not to fall off from a structure such as a vehicle body. The present disclosure provides a fastening structure capable of suppressing deformation of a base that holds a fastening member for fastening the resin member to the structure. [Means for solving the problem]

[0005] a base plate facing the structure and an insertion hole formed in the base plate, through which the fastening member is inserted and which opens to the opening; a first reinforcing piece positioned on the structure side; and a second reinforcing piece connected to the first reinforcing piece via the opening and positioned opposite the structure; and a fastening structure according to one embodiment of the present disclosure, which fastens a resin member to a structure using a fastening member, the fastening structure comprising: the resin member; and a reinforcing member attached to the resin member. The resin member has a plate-like portion extending in a first direction and a second direction intersecting the first direction; an opening provided in the plate-like portion and penetrating in a third direction intersecting the first direction and the second direction; and a base provided adjacent to the opening and protruding from the plate-like portion toward the structure; the base plate facing the structure; and an insertion hole provided in the base plate, through which the fastening member is inserted and which opens to the opening side; the reinforcing member has a first reinforcing piece positioned on the structure side; and a second reinforcing piece connected to the first reinforcing piece via the opening and positioned opposite the structure; the first reinforcing piece contacts the base plate at the end on the opening side of the base plate so as to cover both portions divided by the insertion hole from the structure side; and the second reinforcing piece contacts the plate-like portion. [Effects of the Invention]

[0006] According to the present disclosure, it is possible to provide a fastening structure that can suppress deformation of a base that holds a fastening member for fastening a resin member to a structure. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. [Figure 2] FIG. 2 is a cross-sectional view showing the AA section of FIG. [Figure 3] 3A and 3B are an enlarged perspective view and a cross-sectional view showing part B in FIG. 2. [Figure 4] 3A and 3B are a perspective view and a cross-sectional view showing a reinforcing member. [Figure 5] 5A and 5B are explanatory diagrams for explaining a method of attaching a fastening member and a reinforcing member. [Figure 6] FIG. 10 is an explanatory diagram for explaining the effects of the present disclosure. [Figure 7] 1A and 1B are a perspective view and a cross-sectional view showing a second embodiment of the present disclosure. [Figure 8] 10A and 10B are a perspective view and a cross-sectional view showing a third embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings.

[0009] First Embodiment FIG. 1 is a bottom view of a resin member 2. In this embodiment, the resin member 2 is an exterior member attached to a vehicle by fastening members, and more specifically, a spoiler. The resin member 2 has a plurality of pedestals 6 (six in this embodiment) that hold the fastening members. FIG. 2 is a cross-sectional view of the fastening structure corresponding to the cross section taken along line AA in FIG. 1. Details will be described later. As shown in FIG. 2, the fastening structure 1 is a structure for fastening the resin member 2 to a structure 4 by fastening members 10. The resin member 2 is attached to the structure 4, which is a roof panel of a vehicle C. The first direction X in FIG. 2 corresponds to the width direction of the vehicle C, the second direction Y corresponds to the front-rear direction of the vehicle C, and the third direction Z corresponds to a direction intersecting the first direction X and the second direction Y. The resin member 2 is not limited to the vehicle C, and may be attached to a frame structure or panel that forms an aircraft, ship, building, or other structure.

[0010] The fastening structure 1 includes a resin member 2 and a reinforcing member 8 attached to the resin member 2.

[0011] The resin member 2 includes a first resin member 20 disposed on the structural body 4 side and a second resin member 30 disposed opposite the first resin member 20. In this embodiment, the first resin member 20 is an inner panel of the spoiler, and the second resin member 30 is an outer panel of the spoiler.

[0012] The first resin member 20 includes a plate-like first plate-shaped portion (an example of a plate-shaped portion) 22 extending in the first direction X and the second direction Y, a protruding portion 23 protruding downward from the first plate-shaped portion 22 (in the opposite direction to the third direction Z in FIG. 2 ), and an internal connecting portion 25 connected to the second resin member 30. Note that the first plate-shaped portion 22 may have a portion that extends at an angle with respect to the first direction X and the second direction Y in accordance with the appearance of the vehicle C and the shape of the structure 4.

[0013] The protruding portion 23 has a tip surface 23a that is the tip surface on the protruding side, a front vertical wall 23b that connects the first plate-shaped portion 22 and the tip surface 23a, and a rear vertical wall 23c that is connected to the tip surface 23a and faces the front vertical wall 23b. The protruding portion 23 forms an accommodation space 23d that is defined by the tip surface 23a, the front vertical wall 23b, and the rear vertical wall 23c. The accommodation space 23d can accommodate electrical components such as brake lights of the vehicle C, an imaging device, or various sensors.

[0014] The internal coupling portion 25 is provided on the first plate-shaped portion 22 and joined to the second resin member 30. In this embodiment, the internal coupling portion 25 has a joint portion 25a that is arranged spaced apart from the first plate-shaped portion 22 in the third direction Z, and a joint portion 25b that joins the joint portion 25a and the first plate-shaped portion 22. The joint portion 25a is joined to the second resin member 30 by thermal welding. However, the joining is not limited to this, and may be by screws, bolts and nuts, adhesive, double-sided tape, or other joining means.

[0015] The second resin member 30 includes a plate-like second plate-shaped portion 31 that faces the first plate-shaped portion 22 and extends in the first direction X and the second direction Y, and a folded-back portion 32 that is folded back from the second plate-shaped portion 31. The second plate-shaped portion 31 faces the first plate-shaped portion 22 with a gap therebetween. The folded-back portion 32 is hooked onto the rear vertical wall 23c of the first resin member 20. This causes the second resin member 30 to be locked to the first resin member 20, forming a spoiler with a shell structure. The second plate-shaped portion 31 may also have a portion that extends at an angle with respect to the first direction X and the second direction Y, depending on the appearance of the vehicle C and the shapes of the structure 4 and the first plate-shaped portion 22.

[0016] The first resin member 20 and the second resin member 30 may be made of a thermoplastic resin. The thermoplastic resin is, for example, polypropylene (PP). However, the thermoplastic resin is not limited to this, and may be selected from ASA (Acrylate Sthrene Acrylonitrile) ABS resin, polyethylene (PE), polypropylene (PP), polystyrene (PS), acrylic resin, polycarbonate (PC) resin, polyamide, polyethylene terephthalate (PET), and modified polyphenylene ether (modified PPE).

[0017] The first resin member 20 further has an opening 5 and a seat 6 to which the fastening member 10 is attached. The opening 5 and the seat 6 are provided in a first plate-shaped portion 22 of the first resin member 20. The opening 5 penetrates in the third direction Z. The seat 6 protrudes toward the structure 4.

[0018] 1 , in this embodiment, the openings 5 ​​include a first opening 5a, a second opening 5b, a third opening 5c, a fourth opening 5d, a fifth opening 5e, and a sixth opening 5f. The seats 6 are disposed adjacent to the openings 5. In this embodiment, the seats 6 include a first seat 6a adjacent to the first opening 5a, a second seat 6b adjacent to the second opening 5b, a third seat 6c adjacent to the third opening 5c, a fourth seat 6d adjacent to the fourth opening 5d, a fifth seat 6e adjacent to the fifth opening 5e, and a sixth seat 6f adjacent to the sixth opening 5f.

[0019] In this embodiment, the reinforcing member 8 includes a first reinforcing member 8a, a second reinforcing member 8b, a third reinforcing member 8c, a fourth reinforcing member 8d, a fifth reinforcing member 8e, and a sixth reinforcing member 8f. The first reinforcing member 8a is attached to the first opening 5a and the first seat 6a. The second reinforcing member 8b is attached to the second opening 5b and the second seat 6b. The third reinforcing member 8c is attached to the third opening 5c ​​and the third seat 6c. The fourth reinforcing member 8d is attached to the fourth opening 5d and the fourth seat 6d. The fifth reinforcing member 8e is attached to the fifth opening 5e and the fifth seat 6e. The sixth reinforcing member 8f is attached to the sixth opening 5f and the sixth seat 6f.

[0020] Fig. 3(a) is an enlarged perspective view of portion B in Fig. 2, Fig. 3(b) is a cross-sectional view showing the CC cross section of Fig. 3(a), and Fig. 3(c) is a cross-sectional view showing the DD cross section of Fig. 3(a). Below, the configurations of the opening 5, the base 6, and the reinforcing member 8 will be described using the first opening 5a, the first base 6a, and the first reinforcing member 8a as examples.

[0021] As shown in FIG. 3(a), the opening 5 has a sidewall 50 surrounding the opening 5. The sidewall 50 includes a first sidewall 51, a second sidewall 52 facing the first sidewall 51, and a third wall portion 53 connecting the first sidewall 51 and the second sidewall 52. The opening 5 of this embodiment is defined by the sidewall 50 and the base 6. The third wall portion 53 of this embodiment faces the base 6 in the first direction X.

[0022] The base 6 has a base plate 61 spaced apart from the first plate-shaped portion 22 in the third direction Z, a side wall 62 connecting the base plate 61 and the first plate-shaped portion 22, and an insertion hole 63 provided in the base plate 61. The base plate 61 and the side wall 62 in this embodiment are plate-shaped and have approximately the same thickness as the first plate-shaped portion 22.

[0023] The base plate 61 extends in the first direction X and the second direction Y. The base plate 61 has a rectangular shape including a first end 61a, a second end 61b, a third end 61c, and a fourth end 61d. The fourth end 61d is adjacent to the opening 5 in the first direction X. An end face 61e of the base plate 61 including the fourth end 61d faces, in the first direction X, the area where the opening 5 is provided. In this embodiment, the end face 61e extends in the second direction Y and the third direction Z.

[0024] The side wall 62 connects the base plate 61 and the first plate-shaped portion 22. The side wall 62 has a first side wall 62a that connects a first end 61a to the first plate-shaped portion 22, a second side wall 62b that faces the first side wall 62a and connects a second end 61b to the first plate-shaped portion 22, and a third side wall 62c that connects the first side wall 62a and the second side wall 62b and connects a third end 61c to the first plate-shaped portion 22. As shown in FIG. 3(b), a space M surrounded by the base plate 61 and the side wall 62 is formed in the first resin member 20.

[0025] Returning to FIG. 3(a), the base 6 further has an insertion hole 63 into which the fastening member 10 is inserted. The insertion hole 63 is a slit provided in the base plate 61 and extending in the first direction X. The insertion hole 63 opens on the side of a fourth end 61d of the base plate 61. In this embodiment, the insertion hole 63 is defined by a first side wall 63a extending in the first direction X, a second side wall 63b facing the first side wall 63a, and a connecting wall 63c connecting the first side wall 63a and the second side wall 63b.

[0026] The insertion hole 63 divides the base plate 61 into a first portion 611 and a second portion 612 at the fourth end portion 61d of the base plate 61. In this embodiment, the first portion 611 is located on the first side wall 51 side that defines the opening 5, and the second portion 612 is located on the second side wall 52 side. An end portion of the first side wall 63a opposite the connecting wall 63c is connected to the first portion 611 of the end face 61e. An end portion of the second side wall 63b opposite the connecting wall 63c is connected to the second portion 612 of the end face 61e.

[0027] Next, the fastening member 10 attached to the base 6 will be described. The fastening member 10 is inserted into the bolt hole 40 of the structure 4 and fastened with a nut 12 arranged on the opposite side of the structure 4 from the first resin member 20 (see FIG. 2). In this way, the resin member 2 is fastened to the structure 4 by the fastening member 10. The fastening member 10 is made of a metal that is more rigid than the resin member 2. The material of the fastening member 10 is, for example, iron, stainless steel, titanium, or other metallic material.

[0028] The fastening member 10 has a shaft 10a, a first flange 10b connected to the shaft 10a, and a second flange 10c opposite the first flange 10b and connected to the shaft 10a.

[0029] As shown in FIG. 3(a), the first flange 10b has a plate shape that extends in a direction intersecting the central axis O of the shaft 10a. In this embodiment, the first flange 10b has a disk shape that is perpendicular to the central axis O of the shaft 10a. However, the shape of the first flange 10b is not limited to this, and it may be a square or a polygonal shape other than a square.

[0030] The second flange 10c has a plate shape that extends in a direction intersecting the central axis O of the shaft 10a. In this embodiment, the second flange 10c has a disk shape that is perpendicular to the central axis O of the shaft 10a. However, the shape of the second flange 10c is not limited to this, and may be a square or a polygonal shape other than a square.

[0031] The second flange 10c may be fixed so as not to move relative to the shaft 10a, or may be movable along the central axis O relative to the shaft 10a. In this embodiment, the second flange 10c includes a through hole having an inner diameter slightly larger than the outer diameter of the shaft 10a. When the shaft 10a is inserted into the through hole, the second flange 10c is attached to the shaft 10a so as to be movable along the central axis O of the shaft 10a. This allows the second flange 10c to move toward the first flange 10b when tightened with the nut 12 (see FIG. 1), and the base plate 61 can be tightened together with the second flange 10c and the first flange 10b.

[0032] As shown in FIG. 3(b), the shaft 10a includes a fastening portion 110 for fastening to the structure 4 and an intermediate portion 111 located between the first flange 10b and the second flange 10c. The fastening portion 110 in this embodiment has a male thread on its outer surface. The outer diameter of the intermediate portion 111 is equal to the outer diameter of the fastening portion 110, but is not limited thereto, and the outer diameter of the intermediate portion 111 may be different from the outer diameter of the fastening portion 110.

[0033] Furthermore, the shaft 10a may or may not have a retainer that prevents the second flange 10c from coming off the shaft 10a. The retainer may be, for example, a rubber plate fixed to the shaft 10a. The retainer can prevent the second flange 10c from coming off the shaft 10a during the work of attaching the resin member 2 to the structure 4, improving workability.

[0034] Next, the reinforcing member 8 will be described. The reinforcing member 8 has a first reinforcing piece 81 and a second reinforcing piece 82. The reinforcing member 8 is made of a metal having greater rigidity than the resin member 2. The material of the reinforcing member 8 is, for example, iron, stainless steel, titanium, or other metal materials. The reinforcing member 8 of this embodiment is a plate-like member formed by bending a single metal plate. Note that the reinforcing member 8 may also be made of a resin having greater rigidity than the resin member 2.

[0035] Fig. 4(a) is a perspective view showing the reinforcing member 8, and Fig. 4(b) is a cross-sectional view showing the E-E cross section of Fig. 4(a). As shown in Fig. 4(a), the first reinforcing piece 81 includes a first plate portion 81a, a second plate portion 81b spaced apart from the first plate portion 81a in the third direction Z, a third plate portion 81c connecting the first plate portion 81a and the second plate portion 81b, and a fourth plate portion 81d and a fifth plate portion 81e extending from the second plate portion 81b.

[0036] The first plate portion 81a has a plate shape extending in the first direction X and the second direction Y. The first plate portion 81a includes a first end portion 811 and a second end portion 812 opposite the first end portion 811 in the first direction X. The second plate portion 81b has a plate shape extending in the first direction X and the second direction Y like the first plate portion 81a. The second plate portion 81b includes a first end portion 813 and a second end portion 814 opposite the first end portion 813 in the first direction X. The second plate portion 81b also includes a third end portion 815 and a fourth end portion 816 opposite the third end portion 815 in the second direction Y. The third plate portion 81c is a standing wall extending in the second direction Y and the third direction Z, and connects the first end portion 811 of the first plate portion 81a and the second end portion 814 of the second plate portion 81b. That is, the first reinforcing piece 81 has a staircase shape with one step in the third direction Z.

[0037] The fourth plate portion 81d extends from a third end 815 of the second plate portion 81b along the third direction Z. The fifth plate portion 81e extends from a fourth end 816 of the second plate portion 81b along the third direction Z. The fourth plate portion 81d and the fifth plate portion 81e face each other in the second direction Y. As shown in FIG. 4(b), the fourth plate portion 81d and the fifth plate portion 81e of this embodiment extend at an angle with respect to the third direction Z. As a result, the distance between the fourth plate portion 81d and the fifth plate portion 81e in the second direction Y increases with increasing distance from the second plate portion 81b along the third direction Z.

[0038] The second reinforcing piece 82 includes a sixth plate portion 82a and a seventh plate portion 82b. The sixth plate portion 82a extends from an end of the fourth plate portion 81d of the first reinforcing piece 81 opposite the second plate portion 81b, generally in the direction opposite the second direction Y in FIG. 4(b). The sixth plate portion 82a extends in the first direction X and the second direction Y. Similarly, the seventh plate portion 82b extends from an end of the fifth plate portion 81e of the first reinforcing piece 81 opposite the second plate portion 81b, generally in the second direction in FIG. 4(b). The seventh plate portion 82b extends in the first direction X and the second direction Y.

[0039] The second reinforcing piece 82 further has a protrusion 83. The protrusion 83 protrudes from the second reinforcing piece 82 in the direction opposite to the third direction Z. In this embodiment, the protrusion 83 includes a first protrusion 83a and a second protrusion 83b. The first protrusion 83a is a protrusion provided on the sixth plate portion 82a of the second reinforcing piece 82 and extending in the first direction X. The second protrusion 83b is a protrusion provided on the seventh plate portion 82b of the second reinforcing piece 82 and extending in the first direction X. However, the protrusion 83 may have a grained pattern, multiple protrusions, or the like.

[0040] 1, 3, and 5, a state in which the fastening member 10 and the reinforcing member 8 are attached to the base 6 (hereinafter referred to as the attached state) will be described. As described above, the base plate 61 is divided into a first portion 611 and a second portion 612. The first portion 611 and the second portion 612 face each other with an insertion hole 63 therebetween. The insertion hole 63 opens on the side of the fourth end portion 61d of the base plate 61. The fastening member 10 is inserted into the insertion hole 63 from the opening of the fourth end portion 61d so that the first flange 10b and the second flange 10c sandwich the base plate 61 in the third direction Z.

[0041] As shown in FIG. 3( a), in the attached state, the shaft 10a of the fastening member 10 is inserted into the insertion hole 63. As shown in FIG. 3( b), in this embodiment, the shaft 10a is disposed in the insertion hole 63 along the third direction Z, and the middle portion 111 of the shaft 10a is disposed in the insertion hole 63. As a result, the base 6 restricts movement of the shaft 10a and therefore the fastening member 10 in the second direction Y. Although not shown, the first side wall 62a is provided with two first protrusions spaced a predetermined distance apart, and the second side wall 62b is provided with two second protrusions facing the two first protrusions of the first side wall 62a. As the shaft 10a is disposed between these first protrusions and second protrusions, movement of the shaft 10a and therefore the fastening member 10 in the first direction X is restricted.

[0042] 1, the first flange 10b is located inside the space M on the opposite side of the structure 4 in the third direction Z, with the base plate 61 of the base 6 sandwiched therebetween. The second flange 10c is located on the structure 4 side, facing the first flange 10b in the third direction Z, with the base plate 61 of the base 6 sandwiched therebetween. That is, the first flange 10b and the second flange 10c sandwich the base plate 61 in the third direction Z. As a result, the first flange 10b and the second flange 10c restrict movement of the fastening member 10 in the third direction Z relative to the base plate 61 and therefore relative to the base 6.

[0043] Additionally, the second flange 10c is located on the resin member 2 side, opposite the nut 12, with the structure 4 sandwiched between them in the third direction Z. As a result, the second flange 10c and the nut 12 sandwich the structure 4 between them in the third direction Z, restricting movement of the fastening member 10 and, ultimately, the resin member 2 relative to the structure 4 in the third direction Z.

[0044] Furthermore, the second flange 10c is movable in the direction of the central axis of the shaft 10a (the direction of the arrow Z in FIG. 1). This allows the second flange 10c to move in the third direction Z, and when the fastening member 10 is tightened with the nut 12, the second flange 10c can tighten the base plate 61 together with the first flange 10b.

[0045] As shown in FIG. 3(a), the reinforcing member 8 is attached to the first plate-shaped portion 22 around the opening 5 and the base 6 by inserting the second reinforcing piece 82 into the opening 5. In the attached state, the first reinforcing piece 81 of the reinforcing member 8 is disposed on the side of the structure 4 (see FIG. 1) in the third direction Z. The first reinforcing piece 81 is also disposed across from the opening 5 to the base 6 in the first direction X. The second reinforcing piece 82 is disposed on the opposite side of the structure 4 (the second resin member 30 (see FIG. 1)) in the third direction Z, with the first resin member 20 in between.

[0046] 3(a), in the attached state, the first plate portion 81a of the first reinforcing piece 81 contacts the base plate 61 of the base 6 from the side of the structure 4 (see FIG. 1) in the third direction Z. The first plate portion 81a covers both the first portion 611 and the second portion 612, which are bisected by the insertion hole 63, at the end (fourth end 61d) on the opening side of the base plate 61.

[0047] The second plate portion 81b covers a portion of the opening 5 in the third direction Z. The first reinforcing piece 81 of this embodiment is disposed between the structure 4 and the first resin member 20 in the third direction Z. The second reinforcing piece 82 is disposed between the first resin member 20 and the second resin member 30. This restricts movement of the reinforcing member 8 in the third direction Z between the resin member 2 and the structure 4.

[0048] As shown in FIG. 3(b), the third plate portion 81c contacts the end face 61e of the base plate 61 from the fourth end portion 61d in the first direction X.

[0049] 3(c), the sixth plate portion 82a of the second reinforcing piece 82 contacts the first plate portion 22 of the first resin member 20 from the opposite side of the structure 4 in the third direction Z. The fourth plate portion 81d of the first reinforcing piece 81 is disposed inside the opening 5 and contacts the first side wall 51 from the inside of the opening 5 in the second direction Y.

[0050] The sixth plate portion 82a of the second reinforcing piece 82 contacts the first plate portion 22 of the first resin member 20 from the opposite side (second resin member 30 (see FIG. 1)) of the structure 4 in the third direction Z. The fifth plate portion 81e of the first reinforcing piece 81 is disposed inside the opening 5 and contacts the second side wall 52 from the inside of the opening 5 in the second direction Y.

[0051] The protrusion 83 contacts the first plate-shaped portion 22 of the first resin member 20 from the opposite side of the structure 4 in the third direction Z. The protrusion 83 may fit into a recess 26 provided in the first plate-shaped portion 22. The recess 26 is a groove that is recessed from the surface of the first plate-shaped portion 22 facing the second resin member 30 according to the shape of the outer surface of the protrusion 83. The recess 26 in this embodiment includes a first recess 26a adjacent to the first side wall 51 that defines the opening 5 and a second recess 26b adjacent to the second side wall 52 that faces the first side wall 51. The first protrusion 83a fits into the first recess 26a. The second protrusion 83b fits into the second recess 26b. As a result, the first protrusion 83a can restrict movement of the sixth plate portion 82a in the second direction Y, and the second protrusion 83b can restrict movement of the seventh plate portion 82b in the second direction Y. As a result, the protrusion 83 can restrict the movement of the second reinforcing piece 82 and therefore the reinforcing member 8 in the second direction Y, and can prevent the reinforcing member 8 from falling off the opening 5 and the base 6.

[0052] FIG. 5(a) is an explanatory diagram showing a method for attaching the fastening member 10. FIGS. 5(b) and 5(c) are explanatory diagrams showing a method for attaching the reinforcing member 8 in the DD cross section of FIG. 3(a). As shown in FIG. 5(a), the fastening member 10 is moved in the direction of the black arrow in FIG. 5(a) from the position indicated by the dashed line to the position indicated by the solid line, and inserted into the insertion hole 63. Furthermore, the reinforcing member 8 is attached to the first resin member 20 with the fastening member 10 held by the base 6 (see FIG. 5(a)). As shown in FIG. 5(b), the reinforcing member 8 is deformed such that the fourth plate portion 81d and the fifth plate portion 81e of the first reinforcing piece 81 are gripped from the second direction Y and pressed inward (see the black arrow in FIG. 5(b)), bringing the fourth plate portion 81d and the fifth plate portion 81e closer to each other. This allows the reinforcing member 8 to pass between the first side wall 51 and the second side wall 52 that define the opening 5.

[0053] The reinforcing member 8 is inserted into the opening 5 along the third direction Z while the fourth plate portion 81d and the fifth plate portion 81e are deformed (see the white arrow in FIG. 5(b)). As shown in FIG. 5(c), when the second reinforcing piece 82 of the reinforcing member 8 passes through the opening 5, the pressure on the fourth plate portion 81d and the fifth plate portion 81e is released. The fourth plate portion 81d and the fifth plate portion 81e return to their original shapes (see the black arrow in FIG. 5(c)). The sixth plate portion 82a and the seventh plate portion 82b of the second reinforcing piece 82 contact the first plate portion 22 of the first resin member 20, respectively. At this time, the fourth plate portion 81d of the first reinforcing piece 81 contacts the first side wall 51, and the fifth plate portion 81e contacts the second side wall 52. Furthermore, the protrusion 83 provided on the second reinforcing piece 82 fits into the recess 26 provided in the first resin member 20. The first protrusion 83a fits into the first recess 26a, and the second protrusion 83b fits into the second recess 26b, thereby restricting movement of the sixth plate portion 82a and the seventh plate portion 82b in the second direction Y.

[0054] Next, the effect of the fastening structure 1 of this embodiment will be described with reference to FIG. 6. As shown in FIG. 6(a), in this embodiment, a fastening member 10 is inserted into the insertion hole 63 of the base 6, and the first resin member 20, and therefore the resin member 2, is fastened to the structure 4 by the fastening member 10. Such a base 6 may be subjected to an unintended load P in a direction that causes the resin member 2 to be peeled off from the structure 4 due to, for example, an object colliding with the resin member 2. The load P is, for example, a thrust load that thrusts the resin member 2 upward from below (the direction opposite to the arrow Z) on the rear side (the second direction Y side) of the resin member 2. The first plate-shaped portion 22 is deformed by the load P so as to be warped upward (in the direction of the arrow Z) (see the black arrow in FIG. 6(a)). Meanwhile, the fastening member 10 tries to remain attached to the structure 4. As a result, a force that expands the insertion hole 63 around the fastening member 10 acts on the base plate 61. In the base plate 61, stress is most likely to concentrate at the fourth end 61d and end face 61e, which are separated by the insertion hole 63, i.e., at the first portion 611 and the second portion 612. For this reason, the base plate 61 is likely to undergo deformation originating from the first portion 611 and the second portion 612. As shown in FIG. 6(b), particularly near the fourth end 61d of the base plate 61, a force Wu that tries to separate the first portion 611 and the second portion 612 and a force Wp that tries to enlarge the opening of the insertion hole 63 act on the first plate-shaped portion 22 that tries to move upward (in the direction of arrow Z in FIG. 6(b)). The reinforcing member 8 suppresses deformation of the base plate 61 against these forces.

[0055] Specifically, when either the first reinforcing piece 81 or the second reinforcing piece 82 of the reinforcing member 8 attempts to move in the third direction Z away from the first resin member 20, the other of the first reinforcing piece 81 or the second reinforcing piece 82 attempts to move closer to the first resin member 20. When the base plate 61 receives the force Wu, it moves or deforms downward (the direction opposite to the arrow Z in FIG. 6(b)) and presses the first reinforcing piece 81. Meanwhile, the movement of the first reinforcing piece 81 in the third direction Z is restricted by the second reinforcing piece 82, and the first reinforcing piece 81 applies an upward reaction force (in the direction of the arrow Z in FIG. 6(b)) to the base plate 61. As a result, the first reinforcing piece 81, and therefore the reinforcing member 8, can suppress deformation of the base plate 61.

[0056] Furthermore, the first plate portion 81a of the first reinforcing piece 81 covers the base plate 61 from above (the direction of arrow Z in FIG. 6(b)) and contacts, in the second direction Y, the first portion 611 and the second portion 612 of the base plate 61, which are spaced apart across the insertion hole 63. This allows the first plate portion 81a to virtually connect the first portion 611 and the second portion 612 of the base plate 61. Therefore, the first plate portion 81a can transmit a load transmitted to one side of the base plate 61 to the other side across the insertion hole 63, thereby alleviating local stress concentration in the base plate 61. As a result, the reinforcing member 8 can suppress deformation of the base plate 61 and, ultimately, the base 6.

[0057] Furthermore, the third plate portion 81c of the first reinforcing piece 81 covers the end face 61e of the base plate 61 in the first direction X and spans the first portion 611 and the second portion 612, which are spaced apart across the insertion hole 63, in the second direction Y. This allows the third plate portion 81c to transmit a load transmitted to either the first portion 611 or the second portion 612 across the insertion hole 63 to the other portion. This allows the reinforcing member 8 to reinforce the fourth end portion 61d and the end face 61e of the base plate 61, which may be the starting point of deformation, and to alleviate local stress concentration on the end face 61e of the base plate 61. Furthermore, the third plate portion 81c presses the end face 61e, which tends to deform in the second direction Y to enlarge the opening of the insertion hole 63 in response to the force Wp, thereby suppressing deformation of the base plate 61. This allows the reinforcing member 8 to improve the rigidity of the entire base plate 61 and suppress deformation of the base 6.

[0058] As described above, the reinforcing member 8 can suppress deformation of the base 6 and prevent the resin member 2 from falling off the structure 4.

[0059] Second Embodiment Next, a second embodiment of the present disclosure will be described with reference to Fig. 7. Note that, below, configurations different from the first embodiment will be described, and descriptions of configurations that overlap with the first embodiment will be omitted. Fig. 7(a) is a perspective view showing a reinforcing member 802 in this embodiment. Fig. 7(b) is a perspective view showing the attached state of the reinforcing member 802. Fig. 7(c) is a cross-sectional view showing the FF cross section of Fig. 7(b).

[0060] 7(a), in this embodiment, the second reinforcing piece 82 of the reinforcing member 802 has a protruding piece 84. The protruding piece 84 protrudes from the second reinforcing piece 82 in the direction opposite to the third direction Z. The protruding piece 84 in this embodiment includes a first protruding piece 84a and a second protruding piece 84b.

[0061] The first protruding piece 84a is provided near the center of the sixth plate portion 82a of the second reinforcing piece 82 in the first direction X, and has a plate shape that extends in the second direction Y and the third direction Z. The first protruding piece 84a in this embodiment is spaced apart from the fourth plate portion 81d in the second direction Y.

[0062] The second protruding piece 84b is provided on the seventh plate portion 82b of the second reinforcing piece 82, and has a plate shape that extends in the second direction Y and the third direction Z. In this embodiment, the second protruding piece 84b is spaced apart from the fifth plate portion 81e in the second direction Y. In this embodiment, the second protruding piece 84b has the same shape as the first protruding piece 84a, but this is not limiting, and the second protruding piece 84b may be formed in a size or shape different from that of the first protruding piece 84a.

[0063] As shown in FIG. 7(b), the first resin member 20 of this embodiment further has a notch 54 connected to the opening 5. The notch 54 includes a first notch 54a arranged on the first side wall 51 side of the opening 5 and a second notch 54b arranged on the second side wall 52 side. In this embodiment, the first notch 54a extends from the first side wall 51 along the second direction Y. The second notch 54b extends from the second side wall 52 along the second direction Y. As shown in FIG. 7(c), the first notch 54a receives the first protruding piece 84a in the attached state. The second notch 54b receives the second protruding piece 84b in the attached state. This allows the notch 54 to restrict movement of the protruding piece 84, and therefore the reinforcing member 802, in the first direction X and the second direction Y. In this embodiment, the protruding piece 84 protrudes from the first plate-shaped portion 22 of the resin member 20 in the attached state.

[0064] In this embodiment, an example in which two protruding pieces 84 and two notches 54 are provided has been described, but this is not limiting, and the number, size, and shape of the protruding pieces 84 and the notches 54 can be changed as appropriate.

[0065] <Third embodiment> Next, a third embodiment of the present disclosure will be described with reference to Fig. 8. Note that, hereinafter, configurations different from the first and second embodiments will be described, and configurations that overlap with the first and second embodiments will not be described. Fig. 8(a) is a perspective view showing a reinforcing member 803 in this embodiment. Fig. 8(b) is a perspective view showing the attached state of the reinforcing member 803, which corresponds to part B in Fig. 1. Fig. 8(c) is a cross-sectional view showing the GG cross section of Fig. 8(b).

[0066] 8(a), in this embodiment, the second reinforcing piece 82 of the reinforcing member 803 has a standing wall 85. The standing wall 85 protrudes from the second reinforcing piece 82 in the direction opposite to the third direction Z. The standing wall 85 in this embodiment includes a first standing wall 85a and a second standing wall 85b.

[0067] The first standing wall 85a is connected to the sixth plate portion 82a of the second reinforcing piece 82 and has a plate shape that extends in the first direction X and the third direction Z. The first standing wall 85a is disposed at the end of the sixth plate portion 82a opposite to the fourth plate portion 81d in the second direction Y, and extends the entire length of the sixth plate portion 82a in the first direction X.

[0068] The second standing wall 85b is connected to the seventh plate portion 82b of the second reinforcing piece 82 and has a plate shape that extends in the first direction X and the third direction Z. The second standing wall 85b is disposed at an end of the seventh plate portion 82b opposite the fifth plate portion 81e in the second direction Y, and extends over the entire length of the seventh plate portion 82b in the first direction X. In the present embodiment, the second standing wall 85b has the same shape as the first standing wall 85a, but this is not limiting, and the second standing wall 85b may be formed in a size or shape different from that of the first standing wall 85a.

[0069] As shown in FIGS. 8(b) and 8(c), the first resin member 20 of this embodiment has a through-hole 55 and a reinforcing portion 56 adjacent to the through-hole 55.

[0070] 8(c), the through hole 55 penetrates the first plate-shaped portion 22 in the third direction Z. The through hole 55 is disposed spaced apart from the opening 5 in the second direction Y. The through hole 55 includes a first through hole 55a provided on the first side wall 51 side and a second through hole 55b provided on the second side wall 52 side. In the attached state, the first through hole 55a receives the first standing wall 85a, and the second through hole 55b receives the second standing wall 85b.

[0071] The reinforcing portion 56 protrudes from the first plate-shaped portion 22 in the third direction Z. In the present embodiment, the reinforcing portion 56 is a pair of blocks arranged on either side of the through hole 55 in the second direction Y. This allows the reinforcing portion 56 to improve the rigidity of the first resin member 20 around the through hole 55 and reinforce it. In the present embodiment, the reinforcing portion 56 includes a first reinforcing portion 56a that reinforces the first through hole 55a and a second reinforcing portion 56b that reinforces the second through hole 55b.

[0072] In the attached state, the standing wall 85 of the reinforcing member 803 is inserted into the through hole 55 in the third direction Z. In this embodiment, the first standing wall 85a is inserted into the first through hole 55a and is sandwiched between the first reinforcing portions 56a. The second standing wall 85b is inserted into the second through hole 55b and is sandwiched between the second reinforcing portions 56b. This allows the through hole 55 and the reinforcing portions 56 to restrict movement of the standing wall 85, and therefore the reinforcing member 803, in the first direction X and the second direction Y.

[0073] As described above, the fastening structure 1 according to this embodiment can provide the following effects.

[0074] A fastening structure (1) for fastening a resin member (2) to a structure (4) with a fastening member (10), The resin member 2; a reinforcing member 8 (802, 803) attached to the resin member 2; The resin member 2 is a plate-shaped portion (first plate-shaped portion) 22 extending in a first direction X and a second direction Y intersecting the first direction X; an opening 5 provided in the plate-like portion 22 and penetrating in a third direction Z intersecting the first direction X and the second direction Y; a base (6) provided adjacent to the opening (5) and protruding from the plate-like portion (22) toward the structure (4), The base 6 is a base plate (61) facing the structure (4); and an insertion hole (63) provided in the base plate (61) into which the fastening member (10) is inserted and which opens to the opening (5), The reinforcing member 8 (802, 803) is a first reinforcing piece 81 located on the structural body 4 side; a second reinforcing piece (82) connected to the first reinforcing piece (81) through the opening (5) and positioned on the opposite side of the structure (4), The first reinforcing piece 81 contacts the base plate 61 at an end (fourth end) 61d on the opening 5 side of the base plate 61 so as to cover both portions (first portion 611 and second portion 612) divided by the insertion hole 63 from the structure 4 side, The second reinforcing piece 82 contacts the plate-like portion 22 .

[0075] According to this fastening structure 1, when either the first reinforcing piece 81 or the second reinforcing piece 82 attempts to move in a direction away from the plate-shaped portion (first plate-shaped portion) 22, the other of the first reinforcing piece 81 or the second reinforcing piece 82 approaches and is pressed against the plate-shaped portion 22. This prevents the reinforcing member 8 (802, 803) from falling off the opening 5 and the base 6. Furthermore, the first reinforcing piece 81 bridges between the first portion 611 and the second portion 612 of the base plate 61, which are divided into two by the insertion hole 63. This allows the first reinforcing piece 81 to transmit a load transmitted to either the first portion 611 or the second portion 612 to the other portion. This reduces local stress concentration in the base plate 61. As a result, the reinforcing members 8 (802, 803) can suppress deformation of the base 6 and, ultimately, prevent the resin member 2 from falling off the structure 4.

[0076] The base plate 61 includes an end surface 61e on the opening 5 side that intersects with an insertion direction (first direction X) in which the fastening member 10 is inserted into the insertion hole 63, The first reinforcing piece 81 contacts the end surface 61e.

[0077] As a result, the first reinforcing piece 81 can restrict movement of the end face 61e of the base plate 61, and deformation of the base 6 can be suppressed.

[0078] The plate-shaped portion 22 has a recess 26 recessed in the third direction Z, The second reinforcing piece 82 is recessed into the recess 26 .

[0079] This allows the reinforcing member 8 (802, 803) to restrict movement of the second reinforcing piece 82 relative to the plate-shaped portion 22. As a result, the fastening structure 1 can prevent the reinforcing member 8 from falling off the opening 5 and the base 6.

[0080] The resin member (2) has a side wall (50) surrounding the opening (5), The first reinforcing piece 81 contacts the side wall 50 .

[0081] This allows the reinforcing members 8 (802, 803) to restrict movement of the first reinforcing piece 81 relative to the side wall 50. As a result, the fastening structure 1 can prevent the reinforcing members 8 from falling off the opening 5 and the base 6.

[0082] Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above embodiments, and various modifications are possible within the scope of the gist of the invention. In particular, the multiple modifications described in this specification can be arbitrarily combined as necessary.

[0083] In the above embodiment, a spoiler is given as an example of a resin member, but the technology of the present disclosure is not limited to this and can be applied to any resin member that requires high rigidity in terms of size or shape. [Explanation of symbols]

[0084] 1: Fastening structure 2: Resin material 20: First resin member 22: First plate-shaped portion 26: Recess 5:Aperture 50: Side wall 6: Base 61: Base board 61d: 4th end (end) 61e: End face 63: Insertion hole 8 (802, 803): Reinforcement member 81: 1st reinforcement piece 82:Second reinforcement piece 83: Convex X: 1st direction Y: Second direction Z: 3rd direction

Claims

1. A fastening structure for fastening a resin member to a structure using a fastening member, The resin member; a reinforcing member attached to the resin member, The resin member is a plate-like portion extending in a first direction and a second direction intersecting the first direction; an opening provided in the plate-like portion and penetrating in a third direction intersecting the first direction and the second direction; a pedestal provided adjacent to the opening and protruding from the plate-like portion toward the structure, The base is a base plate facing the structure; and an insertion hole provided in the base plate, into which the fastening member is inserted and which opens to the opening side, The reinforcing member is a first reinforcing piece located on the structure side; a second reinforcing piece connected to the first reinforcing piece through the opening and positioned on the opposite side of the structure, the first reinforcing piece is in contact with the base plate at an end portion on the opening side of the base plate so as to cover both portions divided by the insertion hole from the structure side, The second reinforcing piece contacts the plate-shaped portion. Fastening structure.

2. the base plate includes an end surface on the opening side that intersects with an insertion direction in which the fastening member is inserted into the insertion hole, The first reinforcing piece contacts the end surface. The fastening structure according to claim 1 .

3. the plate-shaped portion has a recess recessed in the third direction, The second reinforcing piece is recessed into the recess. The fastening structure according to claim 1 .

4. the resin member has a side wall surrounding the opening, the first reinforcing piece contacts the side wall; The fastening structure according to claim 1 .

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