Fastening structure

Abstract

To provide a novel fastening structure capable of suppressing breakage of a resin member fastened to a structure.SOLUTION: A fastening structure for fastening a resin member to a structure by a fastening member includes: a pedestal protruding from a surface of the resin member; and a reinforcing member laminated on the pedestal from one side in a protruding direction of the pedestal. The reinforcing member has a body section capable of attaching the fastening member together with the pedestal and an extension section that is extended from the body section and is laminated on the resin member from the one side around the pedestal. An end of the extension section is separated from the resin member.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to fastening structures. [Background technology]

[0002] Patent Document 1 discloses a fastening structure for fastening a spoiler, which is a resin member, to a structure. This fastening structure includes a base provided on the resin member and a fastening member that is fastened to the structure while being held by the base. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 6-59027 Summary of the Invention [Problem to be solved by the invention]

[0004] In such a fastening structure, when the resin member is subjected to a load, it is preferable that deformation of the resin member be suppressed and damage to the resin member be prevented.

[0005] An object of the present invention is to provide a fastening structure that can suppress breakage of a resin member fastened to a structure.

[0006] A fastening structure according to one aspect of the present disclosure is a fastening structure for fastening a resin member to a structure using a fastening member, and comprises a base protruding from the surface of the resin member, and a reinforcing member laminated to the base from one side in the protruding direction of the base, wherein the reinforcing member has a main body portion to which the fastening member can be attached together with the base, and an extension portion extending from the main body portion and laminated from the one side to the resin member around the base, and an end of the extension portion is spaced apart from the resin member. [Effects of the Invention]

[0007] According to the present disclosure, it is possible to provide a fastening structure that can suppress breakage of a resin member fastened to a structure. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. [Figure 2] FIG. [Figure 3] FIG. [Figure 4] FIG. [Figure 5] FIG. 2 is an enlarged cross-sectional view of part D in FIG. 1. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings.

[0010] FIG. 1 is a cross-sectional view showing a fastening structure 1 of this embodiment. As shown in FIG. 1, the fastening structure 1 fastens a resin member 2 to a structural body 4 with a fastening member 10. The fastening structure 1 of this embodiment is a fastening structure for attaching a spoiler 20, which is an aerodynamic member, to a vehicle C. The resin member 2 of this embodiment is the spoiler 20. The structural body 4 of this embodiment is a roof panel of the vehicle C.

[0011] However, the fastening structure 1 may also be a fastening structure for attaching exterior or interior members to framework structures or panels that form aircraft, ships, buildings, or the like.

[0012] The resin member 2 includes a first resin member 2a and a second resin member 2b facing the first resin member 2a. The first resin member 2a is arranged on the structural body 4 side. The second resin member 2b has a space V between it and the first resin member 2a, and is arranged on the opposite side of the structural body 4 across the first resin member 2a. The resin member 2 of this embodiment is tubular, with the space V enclosed by the first resin member 2a and the second resin member 2b.

[0013] The first resin member 2a and the second resin member 2b are 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 ABS resin, polyethylene (PE), polystyrene (PS), acrylic resin, polycarbonate (PC), polyamide, polyethylene terephthalate (PET), and modified polyphenylene ether (modified PPE).

[0014] FIG. 2 is a plan view of the resin member 2. Line AA in FIG. 2 corresponds to the cross section in FIG. 1, and line BB in FIG. 2 corresponds to the cross section in FIG. 3. As shown in FIG. 2, the first resin member 2a and the second resin member 2b are plate-shaped and extend in a first direction X and a second direction Y intersecting the first direction X. In this embodiment, the first direction X coincides with the vehicle width direction W of the vehicle C in a state where the resin member 2a is fastened to the structural body 4 via the fastening member 10 (hereinafter referred to as the fastened state). Furthermore, the second direction Y coincides with the front-rear direction S of the vehicle C in the fastened state. Furthermore, a third direction Z intersecting the first direction X and the second direction Y coincides with the up-down direction H of the vehicle C.

[0015] The first resin member 2a has a first end X1 and a second end X2 opposite the first end X1 in the first direction X. The first resin member 2a has a first end Y1 and a second end Y2 opposite the first end Y1 in the second direction Y. In this embodiment, the first end Y1 is positioned rearward of the vehicle C (in the direction of arrow S in FIGS. 1 and 2) from the second end Y2 in the fastened state. The second end Y2 is positioned forward of the vehicle C (in the opposite direction to the arrow S in FIGS. 1 and 2) from the first end Y1.

[0016] The second resin member 2b has a third end X3 and a fourth end X4 opposite the third end X3 in the first direction X. The second resin member 2b has a third end Y3 and a fourth end Y4 opposite the third end Y3 in the second direction Y. In this embodiment, the third end Y3 is located rearward of the vehicle C (in the direction of arrow S in FIGS. 1 and 2) from the fourth end Y4 in the fastened state. The fourth end Y4 is located forward of the vehicle C (in the opposite direction to the arrow S in FIGS. 1 and 2) from the third end Y3.

[0017] The first resin member 2 a has a first plate-shaped portion 21 and a protruding portion 22 .

[0018] The first plate-shaped portion 21 includes a front surface 21a facing the structure 4 and a back surface 21b opposite to the front surface 21a.

[0019] The protruding portion 22 is in the shape of a plate that bends from the end portion on the rear side (the direction of arrow S in FIGS. 1 and 2) of the first plate-shaped portion 21. As shown in FIG. 1, the protruding portion 22 bulges out toward the side away from the second resin member 2b. The distance between the first resin member 2a and the second resin member 2b at the protruding portion 22 is greater than the distance between the first resin member 2a and the second resin member 2b at the first plate-shaped portion 21.

[0020] As shown in FIG. 2, the protrusion 22 includes a first portion 22a and a second portion 22b.

[0021] The first portion 22a includes a tip surface 25a on the protruding side, a rear vertical wall 25b on the rear side (the direction of arrow S in FIGS. 1 and 2) of the convex portion 22, a continuing portion 25c on the front side (the side opposite to the direction of arrow S in FIGS. 1 and 2) that connects to the first plate-shaped portion 21, and a front vertical wall 25d that connects the continuing portion 25c and the tip surface 25a. In the first portion 22a, the tip surface 25a and the rear vertical wall 25b form the design of the rear end portion of the vehicle C. The continuing portion 25c and the front vertical wall 25d face the rear vertical wall 25b.

[0022] 1, in the first portion 22a, the front vertical wall 25d, the tip surface 25a, and the rear vertical wall 25b have a generally trapezoidal cross section and bulge downward (the opposite side of the arrow H in FIG. 1). On the other hand, the connection portion between the continuous portion 25c and the front vertical wall 25d has a concave shape that is bent upward (the direction of the arrow H in FIG. 1).

[0023] 3, the second portion 22b does not have a tip end surface and includes a rear vertical wall 26b, a continuing portion 26c, and a front vertical wall 26d. In the second portion 22b, the rear vertical wall 26b forms the design of the rear end portion of the vehicle C. The continuing portion 26c and the front vertical wall 26d face the rear vertical wall 26b.

[0024] In the second portion 22b, the connecting portion 26c, the front vertical wall 26d, and the rear vertical wall 26b have a generally trapezoidal cross section and bulge downward (the opposite direction of arrow H in FIG. 3). Therefore, the connecting portion between the connecting portion 26c and the front vertical wall 26d has a convex shape that is bent downward (the opposite direction of arrow H in FIG. 3).

[0025] As shown in Fig. 1, the first portion 22a bulges downward (the opposite direction to arrow H in Fig. 1) from the first plate-shaped portion 21 by a first bulge amount z1. As shown in Fig. 3, the second portion 22b bulges downward (the opposite direction to arrow H in Fig. 3) from the first plate-shaped portion 21 by a second bulge amount z2. The first bulge amount z1 is smaller than the second bulge amount z2.

[0026] The first portion 22a forms an accommodation space 22c between itself and the structure 4. The accommodation space 22c opens to the rear of the vehicle C (the direction of arrow S in FIGS. 1 and 2). The accommodation space 22c in this embodiment accommodates, for example, a rear wiper attached to the structure 4.

[0027] The space V in the second portion 22b can accommodate electrical components of the vehicle C, such as brake lights, an imaging device, or various sensors.

[0028] 2, the protrusion 22 extends in the first direction X from near the first end X1 to near the second end X2 of the first resin member 2a. The first portion 22a is disposed in the center in the first direction X. However, the first portion 22a may be disposed biased toward either the first end X1 or the second end X2.

[0029] The second resin member 2b has a second plate-shaped portion 23 and a folded portion 24 (see FIGS. 1 and 3).

[0030] The second plate-shaped portion 23 includes a front surface 23a that serves as a design surface of the vehicle C, and a back surface 23b that faces the first plate-shaped portion 21 of the first resin member 2a on the side opposite to the front surface 23a.

[0031] As shown in Fig. 1, the folded portion 24 is provided at the third end Y3 of the second resin member 2b in the second direction Y and folded back toward the fourth end Y4 or forward (the opposite direction to the arrow S in Fig. 1). The folded portion 24 is hooked onto the first end Y1 of the first resin member 2a. This causes the first resin member 2a and the second resin member 2b to lock together.

[0032] The first resin member 2a and the second resin member 2b may be bonded together with a relatively weak adhesive force in addition to being locked together by the folded portion 24. For example, the first resin member 2a and the second resin member 2b may be integrated together at the first plate-shaped portion 21 with double-sided tape, for example.

[0033] Next, the fastening structure 1 of this embodiment will be described. As shown in Figures 1 and 3, the fastening structure 1 includes a base 6 that holds a fastening member 10, and a reinforcing member 8 that is layered on the base 6.

[0034] Fig. 4 is an exploded perspective view showing the base 6, the fastening member 10, and the reinforcing member 8. As shown in Fig. 4, the fastening member 10 has an axis 10a, a first disk portion 10b that extends in a direction intersecting with the axis 10a, a second disk portion 10c that extends in a direction intersecting with the axis 10a and is parallel to the first disk portion 10b, and a fixing portion 10d (see Fig. 1) that receives and fixes the axis 10a.

[0035] The first disk portion 10b is disposed at the end of the shaft 10a opposite to the end that receives the fixed portion 10d. The second disk portion 10c is disposed apart from the first disk portion 10b in the direction in which the shaft 10a extends, and is disposed between the first disk portion 10b and the fixed portion 10d.

[0036] In this embodiment, the shaft 10a has a male thread, and the fixing portion 10d has a female thread that fits the male thread. In the fastened state, the extending direction of the shaft 10a coincides with the fastening direction in which the resin member 2 and the structure 4 (see FIG. 1) are fastened. The fastening direction in this embodiment coincides with the direction of arrow Z, and also coincides with the up-down direction of the vehicle C (the direction of arrow H in FIG. 1) in the fastened state.

[0037] 1 and 2, the seat 6 is provided on the first plate-shaped portion 21 of the first resin member 2a. The seat 6 protrudes from the surface 21a of the first plate-shaped portion 21 toward the structure 4 along the third direction Z.

[0038] 4, the base 6 has a first base surface 61, a second base surface 62, and a third base surface 63. Each of the base surfaces 61 to 63 has a plate shape. The base 6 has an opening 60 formed therein, which is continuous with an internal space 64 defined by the first base surface 61, the second base surface 62, and the third base surface 63.

[0039] The first seating surface 61 is spaced apart from the front surface 21a of the first plate-shaped portion 21 in the third direction Z and extends parallel to the first plate-shaped portion 21. The first seating surface 61 is configured to be able to attach the fastening member 10. The first seating surface 61 includes a cutout portion 61a, a front surface 61b, and a back surface 61c opposite the front surface 61b.

[0040] The notch 61a is a slit for attaching the fastening member 10 to the first base surface 61 by insertion, and extends along the insertion direction and is continuous with the opening 60. The shaft 10a of the fastening member 10 is inserted into the notch 61a. This allows the base 6 to restrict movement of the fastening member 10 in the in-plane direction of the first base surface 61. In addition, the first base surface 61 is sandwiched between the first and second dish portions 10b and 10c of the fastening member 10. This allows the base 6 to restrict movement of the fastening member 10 in the third direction Z. As a result, the base 6 can hold the fastening member 10.

[0041] The second pedestal surface 62 is connected to the first pedestal surface 61 and intersects with the first pedestal surface 61. The third pedestal surface 63 is connected to the first pedestal surface 61 and faces the second pedestal surface 62. The second pedestal surface 62 and the third pedestal surface 63 may be continuous on the side opposite the opening 60. In this embodiment, the second pedestal surface 62 and the third pedestal surface 63 are smoothly connected by a curved surface.

[0042] The opening 60 opens in the insertion direction (see the black arrow in FIG. 4 ) in which the fastening member 10 is inserted. In the present embodiment, an example is shown in which the insertion direction of the fastening member 10 coincides with the first direction X, but the present disclosure is not limited to this. In other words, the opening 60 and the insertion direction only need to be parallel to the first plate-shaped portion 21, and may be the first direction X, the second direction Y, or a direction intersecting these.

[0043] The reinforcing member 8 is a plate-like member formed separately from the base 6 and hence the resin member 2. The reinforcing member 8 is layered on the base 6 from one side in the protruding direction of the base 6 (the opposite direction of arrow Z in FIGS. 1, 3, and 4), specifically, from the opposite side to the side from which the base 6 protrudes. In this embodiment, the reinforcing member 8 is disposed between the first resin member 2a and the second resin member 2b, and layered on the base 6 from the second resin member 2b side, which is one side in the protruding direction of the base 6.

[0044] As shown in FIG. 4, the reinforcing member 8 has a main body portion 80 and an extension portion 81 extending from the main body portion 80.

[0045] The main body 80 is attached to the structure 4 by being housed in an internal space 64 defined by the first seating surface 61, the second seating surface 62, and the third seating surface 63 of the seat 6.

[0046] The main body portion 80 is a portion to which the fastening member 10 can be attached together with the base 6, and may include a first reinforcing surface 80a, a second reinforcing surface 80b connected to the first reinforcing surface 80a, a third reinforcing surface 80c connected to the first reinforcing surface 80a and facing the second reinforcing surface 80b, and a cutout portion 80d.

[0047] The first reinforcing surface 80a extends in the first direction X and the second direction Y, or in a direction intersecting the Z direction. As shown in Fig. 5, the first reinforcing surface 80a extends parallel to the first seating surface 61 of the seat 6 and is laminated on the first seating surface 61 from the second resin member 2b side. The first reinforcing surface 80a faces the back surface 61c of the first seating surface 61.

[0048] The second reinforcing surface 80b extends parallel to the second seating surface 62 of the seat 6 and faces the second seating surface 62. The third reinforcing surface 80c extends parallel to the third seating surface 63 of the seat 6 and faces the third seating surface 63.

[0049] The cutout 80d is provided in the first reinforcing surface 80a. The shaft 10a of the fastening member 10 is inserted into the cutout 80d. Specifically, the first reinforcing surface 80a, together with the first seating surface 61 of the seat 6, is sandwiched between the first dish portion 10b and the second dish portion 10c of the fastening member 10. This allows the first reinforcing surface 80a, together with the seat 6, to restrict movement of the fastening member 10.

[0050] The extension portion 81 bends and extends from the main body portion 80, and is laminated from one side to the first resin member 2a and ultimately to the resin member 2 (see FIGS. 1 and 3) around the base 6. In this embodiment, the extension portion 81 is disposed between the first resin member 2a and the second resin member 2b (see FIGS. 1 and 3), and is laminated from the second resin member 2b side to the continuous portions 25c, 26c of the first resin member 2a.

[0051] The extension portion 81 includes a base portion 81a connected to the main body portion 80 and an end portion 81b on the opposite side of the base portion 81a. In this embodiment, the extension portion 81 is plate-shaped and extends toward a first end portion Y1 (see FIG. 2) in the second direction Y. That is, in the fastened state, the extension portion 81 extends toward the rear of the vehicle C (the direction of arrow S in FIGS. 1 and 3).

[0052] As shown in Fig. 2, the pedestal 6 has a first pedestal 6a and a second pedestal 6b. The first pedestal 6a and the second pedestal 6b are arranged on the surface 21a of the first plate-shaped portion 21 at an interval in the X direction. The number and positions of the pedestals 6 can be changed depending on the size and shape of the resin member 2. The cross-sectional view of Fig. 1 shows the first pedestal 6a, and the cross-sectional view of Fig. 3 shows the second pedestal 6b.

[0053] 2, the reinforcing member 8 has a first reinforcing member 8a arranged on the first seat 6a and a second reinforcing member 8b arranged on the second seat 6b. The first reinforcing member 8a is stacked on the first seat 6a, and the second reinforcing member 8b is stacked on the second seat 6b.

[0054] 1 and 3, the spoiler 20 protrudes rearward (in the direction of arrow S in FIGS. 1 and 3) from the structural body 4 of the vehicle C. Such a spoiler 20 may be subjected to an upward load (hereinafter referred to as a thrust load) due to a collision with an object moving upward.

[0055] When the resin member 2 is subjected to the above-mentioned thrust load, the first resin member 2a deforms in a direction approaching the second resin member 2b. As a result, the first resin member 2a approaches the extension portion 81 of the reinforcing member 8 and eventually comes into contact with it. The extension portion 81 restricts the upward movement of the first resin member 2a, suppressing further deformation of the first resin member 2a. Meanwhile, the resin member 2 receives a reaction force due to contact with the extension portion 81. If the reaction force received by the resin member 2 becomes excessive, the resin member 2 may be destroyed. Note that the extension portion 81 of the reinforcing member 8 and the first resin member 2a may be in point contact or surface contact, but surface contact is preferable from the viewpoint of suppressing deformation by the reinforcing member 8 and preventing destruction of the resin member 2.

[0056] 2, when the reinforcing members 8 include a first reinforcing member 8a and a second reinforcing member 8b, if the timing at which the resin member 2 receives a reaction force from these reinforcing members 8 differs, the portion of the resin member 2 that first comes into contact with the reinforcing member 8 is likely to be destroyed. The timing at which the resin member 2 receives a reaction force from the reinforcing member 8 varies due to, for example, the following factors:

[0057] For example, the second seat 6b, which has a large distance (hereinafter referred to as the separation distance) between the first resin member 2a and the second resin member 2b along the third direction Z, is more likely to deform than the first seat 6a, which has a small separation distance. In a seat 6 that is more likely to deform, the timing at which the resin member 2 receives a reaction force from the reinforcing member 8 is earlier.

[0058] Furthermore, differences in the separation distance may result in differences in the shape of the continuous portion 26c of the first resin member 2a on which the reinforcing member 8 is laminated. For example, in the second seat 6b with a large separation distance, the connection portion between the continuous portion 26c and the front vertical wall 26d is convex, and therefore is more susceptible to deformation than the first seat 6a, in which the connection portion between the continuous portion 25c and the front vertical wall 25d is concave.

[0059] In this embodiment, the timing at which the resin member 2 receives the reaction force from the reinforcing member 8 is adjusted by changing the distance between the end 81b of the extension portion 81 and the first resin member 2a in the first seat 6a and the second seat 6b. Specifically, in the second seat 6b, which is easily deformed, the end 81b of the extension portion 81 is spaced apart from the first resin member 2a. This makes it possible to adjust the timing at which the resin member 2 receives the reaction force from the reinforcing member 8 in the second seat 6b, and to align the timing at which the resin member 2 receives the reaction force from the reinforcing member 8 in the first seat 6a and the second seat 6b. As a result, the reinforcing member 8 can prevent the resin member 2 from being damaged due to deformation of the first resin member 2a or the second resin member 2b.

[0060] In this embodiment, in the first base 6a, the end 81b of the extending portion 81 is brought into contact with the first resin member 2a, and the distance between the end 81b of the extending portion 81 in the first reinforcing member 8a and the first resin member 2a is made different from the distance between the end 81b of the extending portion 81 in the second reinforcing member 8b and the first resin member 2a. In other words, the distance between the end 81b of the extending portion 81 in the first reinforcing member 8a and the first resin member 2a is made smaller than the distance between the end 81b of the extending portion 81 in the second reinforcing member 8b and the first resin member 2a.

[0061] The distance between the extension portion 81 and the first resin member 2a may be greater on the end portion 81b side than on the base portion 81a side. The distance between the extension portion 81 and the first resin member 2a may also be greater from the base portion 81a toward the end portion 81b. The extension portion 81 of the reinforcing member 8 may gradually increase the contact area with the first resin member 2a depending on the amount of deformation of the first resin member 2a. This allows the reinforcing member 8 to continuously change the reaction force transmitted to the first resin member 2a.

[0062] As shown in FIG. 1, the distance in the third direction Z between the end 81b of the extension portion 81 of the first reinforcing member 8a and the resin member 2 is a first distance d1. As shown in FIG. 3, the distance in the third direction Z between the end 81b of the extension portion 81 of the second reinforcing member 8b and the resin member 2 is a second distance d2. It is preferable that the first distance d1 is different from the second distance d2, and further, it is preferable that the first distance d1 is smaller than the second distance d2. In this embodiment, the end 81b of the extension portion 81 of the first reinforcing member 8a is in contact with the first resin member 2a, and the first distance d1 is zero.

[0063] As a result, when the resin member 2 receives a thrust load, the end 81b of the second reinforcing member 8b can come into contact with the first resin member 2a simultaneously with the end 81b of the first reinforcing member 8a.

[0064] Furthermore, as shown in Figures 1 and 3, the third distance d3 between the first resin member 2a and the second resin member 2b corresponding to the first base 6a is smaller than the fourth distance d4 between the first resin member 2a and the second resin member 2b corresponding to the second base 6b.

[0065] In this embodiment, the third distance d3 is the distance between the tip surface 25a of the first resin member 2a and the second resin member 2b at the first seat 6a, and the fourth distance d4 is the distance between the lower end point of the rear vertical wall 26b of the first resin member 2a and the second resin member 2b at the second seat 6b. Furthermore, in the first seat 6a, the connection portion between the continuous portion 25c and the front vertical wall 25d is concave, while in the second seat 6b, the connection portion between the continuous portion 26c and the front vertical wall 26d is convex. Therefore, when the first resin member 2a is subjected to a thrust load, it is more likely to deform in the BB cross section including the second seat 6b than in the AA cross section including the first seat 6a, and the resin member 2a is more likely to receive a reaction force from the reinforcing member 8.

[0066] In this embodiment, in the easily deformable second seat 6b, the end 81b of the extension portion 81 is separated from the first resin member 2a. This makes it possible to delay the timing at which the reinforcing member 8 comes into contact with the resin member 2 in the second seat 6b and the resin member 2 receives a reaction force from the reinforcing member 8. As a result, it is possible to synchronize the timing at which the resin member 2 receives a reaction force from the reinforcing member 8 in the first seat 6a and the second seat 6b.

[0067] The reinforcing member 8 is made of a thermoplastic resin or a metal. The thermoplastic resin is, for example, polypropylene (PP), which is the same material as the resin member 2. This allows the resin member 2 to be disposed of without being separated into the reinforcing member 8 and the resin member 2. This improves the recyclability of the resin member 2 and the reinforcing member 8.

[0068] The reinforcing member 8 may be made of a material different from that of the resin member 2. The thermoplastic resin that forms the reinforcing member 8 may be selected from ABS resin, polyethylene (PE), polystyrene (PS), acrylic resin, polycarbonate (PC) resin, polyamide, polyethylene terephthalate (PET), and modified polyphenylene ether (modified PPE). The metal that may be selected may be, for example, iron, aluminum, or an alloy containing these.

[0069] Furthermore, when the reinforcing member 8 is made of a material different from that of the resin member 2, it is preferable that the reinforcing member 8 be made of a material having a higher elastic modulus than that of the resin member 2. This allows the reinforcing member 8 to suppress deformation of the base 6 due to a load input to the resin member 2.

[0070] The fastening structure 1 of the present disclosure includes a base 6 protruding from the surface of a resin member 2, and a reinforcing member 8 laminated on the base 6 from the second resin member 2b side, which is one side in the protruding direction of the base 6 (the opposite direction to the arrow Z in FIGS. 1 and 4). The reinforcing member 8 has a main body 80 to which a fastening member 10 can be attached together with the base 6, and an extending portion 81 extending from the main body 80 and laminated on the first resin member 2a around the base 6 from the second resin member 2b side, and an end 81b of the extending portion 81 is spaced apart from the first resin member 2a.

[0071] When the resin member 2 receives an external load and the first resin member 2a or the second resin member 2b is deformed by a predetermined amount or more, the end 81b of the reinforcing member 8 comes into contact with the first resin member 2a, and the first resin member 2a receives a reaction force from the extension portion 81 of the reinforcing member 8. According to the above configuration, the end 81b of the extension portion 81 and the first resin member 2a are spaced apart, so by adjusting the distance of this space, it is possible to adjust the timing at which the first resin member 2a comes into contact with the end 81b of the reinforcing member 8 and receives a reaction force from the extension portion 81 of the reinforcing member 8.

[0072] Furthermore, the base 6 may have a first base 6a and a second base 6b, and the reinforcing member 8 may have a first reinforcing member 8a arranged on the first base 6a and a second reinforcing member 8b arranged on the second base 6b. A first distance d1 between an end 81b of an extension portion 81 of the first reinforcing member 8a and the resin member 2 may be different from a second distance d2 between an end 81b of an extension portion 81 of the second reinforcing member 8b and the resin member 2.

[0073] As a result, when the first base 6a and the second base 6b have different degrees of deformation, the fastening structure 1 can adjust the timing at which the first resin member 2a of each base 6 comes into contact with the end 81b of the reinforcing member 8 and receives a reaction force from the extension portion 81 of the reinforcing member 8.

[0074] Furthermore, the resin member 2 includes a first resin member 2a and a second resin member 2b arranged with a space V between the first resin member 2a, the first base 6a and the second base 6b are arranged on the first resin member 2a, the third distance d3 between the first resin member 2a corresponding to the first base 6a and the second resin member 2b corresponding to the second base 6b is smaller than the fourth distance d4 between the first resin member 2a corresponding to the second base 6b and the second resin member 2b, and the first distance d1 may be smaller than the second distance d2.

[0075] This makes it possible to adjust the timing at which the reaction force is received from the extension portion 81 of the reinforcing member 8 when the ease of deformation of the base 6 differs depending on the difference in the distance between the first resin member 2a and the second resin member 2b corresponding to each base 6.

[0076] Furthermore, the first reinforcing member 8a and the second reinforcing member 8b are laminated on the first resin member 2a from the second resin member 2b side, which is opposite to the side on which the first base 6a and the second base 6b protrude from the first resin member 2a in the protruding direction (the opposite direction to the arrow Z in Figures 1 and 4), and a protrusion 22 that bulges out on the side away from the second resin member 2b is provided in the portion of the first resin member 2a corresponding to the second base 6b.

[0077] The first resin member 2a may be more susceptible to deformation in the portion where the protrusion 22 is provided than in the portion where the protrusion 22 is not provided. According to the above configuration, when the ease of deformation of the base 6 varies depending on the protrusion 22, it is possible to adjust the timing of contact with the first resin member 2a and application of a reaction force.

[0078] Furthermore, the base portion 81a of the extension portion 81 of the second reinforcing member 8b may be in contact with the first resin member 2a.

[0079] This eliminates the need to adjust the base portion 81a of the extension portion 81 of the second reinforcing member 8b.

[0080] As described above, the fastening structure 1 of the present disclosure can provide a novel fastening structure that can prevent the resin member 2 fastened to the structure 4 from being broken.

[0081] Although the present disclosure has been described above with reference to the embodiment, it should be understood that the present disclosure is not limited to the above embodiment and various modifications are possible without departing from the spirit of the invention. In particular, the multiple modifications described in this specification can be combined as desired.

[0082] For example, in the above embodiment, the fastening structure 1 is described as an example in which the resin member 2 receives a thrust load and the protrusion 22 is provided on the first resin member 2a, but the present disclosure is not limited to this. That is, the protrusion 22 does not necessarily have to be provided. Furthermore, the protrusion 22 may be provided on the second resin member 2b and may bulge in a direction away from the first resin member 2a.

[0083] When the protrusion 22 is provided on the second resin member 2b, the reinforcing member 8 may be laminated on the base 6 from the side where the base 6 protrudes. This makes it possible to adjust the timing at which the first resin member 2a comes into contact with the end 81b of the reinforcing member 8 and receives a reaction force from the extending portion 81 of the reinforcing member 8 when the spoiler 20 is subjected to a downward load due to a collision with an object moving downward or being pulled downward. [Explanation of symbols]

[0084] 1: Fastening structure 2: Resin member 2a: First resin member 2b: Second resin member 22: Protrusion 4: Structure 6: Base 6a: First base 6b: Second base 8: Reinforcing member 8a: First reinforcing member 8b: Second reinforcing member 10: Fastening member 80: Main body part 81: Extension part 81b: End part d1: 1st distance d2: 2nd distance d3: 3rd distance d4: 4th distance

Claims

1. A fastening structure for fastening a resin member to a structure by a fastening member, a base protruding from a surface of the resin member; a reinforcing member laminated on the base from one side in the protruding direction of the base; Equipped with The reinforcing member is a main body portion to which the fastening member can be attached together with the base; an extension portion extending from the main body portion and laminated on the resin member around the base from the one side; The end of the extension portion is spaced apart from the resin member. Fastening structure.

2. The base includes a first base and a second base, the reinforcing member includes a first reinforcing member disposed on the first seat and a second reinforcing member disposed on the second seat, a first distance between an end of the extension portion of the first reinforcing member and the resin member is different from a second distance between an end of the extension portion of the second reinforcing member and the resin member; The fastening structure according to claim 1 .

3. the resin member includes a first resin member and a second resin member disposed with a space between the first resin member and the second resin member, the first seat and the second seat are disposed on the first resin member, a third distance between the first resin member and the second resin member corresponding to the first seat is smaller than a fourth distance between the first resin member and the second resin member corresponding to the second seat; the first distance is less than the second distance; The fastening structure according to claim 2 .

4. the first reinforcing member and the second reinforcing member are layered on the first resin member from a side opposite to a side where the first seat and the second seat protrude from the first resin member in the protruding direction, a protrusion that bulges outward on a side away from the second resin member at a portion of the first resin member that corresponds to the second seat; The fastening structure according to claim 3.

5. The extending portion of the second reinforcing member is in contact with the resin member. The fastening structure according to any one of claims 2 to 4.

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