Fastening structure

Abstract

To provide a novel fastening structure that can suppress deformation of a resin member that holds a fastening member.SOLUTION: A fastening structure for fastening a resin member to a structure with a fastening member includes a pedestal which is provided to the resin member so as to protrude and to which the fastening member can be fitted. The pedestal includes a guide part for guiding the fastening member from an opening provided in one end thereof and further include a connection member for connecting both side parts of the guide part.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 Patent Application Publication No. 2019-113091 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 base be suppressed and that the base and therefore the resin member be prevented from falling off.

[0005] An object of the present invention is to provide a novel fastening structure capable of suppressing deformation of a resin member that holds a fastening member. [Means for solving the problem]

[0006] A fastening structure according to one aspect of the present disclosure includes: A fastening structure for fastening a resin member to a structure by a fastening member, a base provided on the resin member so as to protrude therefrom and to which the fastening member can be attached; the base has a guide portion that guides the fastening member through an opening provided at one end thereof, The guide member further includes a connecting member that connects both side portions of the guide portion. [Effects of the Invention]

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

[0008] [Figure 1] FIG. [Figure 2] FIG. [Figure 3] FIG. [Figure 4] FIG. [Figure 5] 10A and 10B are exploded and perspective views showing an enlarged view of a fastening structure according to another embodiment; 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. A first direction X in Fig. 1 corresponds to the width direction of the vehicle C, a second direction Y corresponds to the front-rear direction of the vehicle C, and a third direction Z corresponds to the up-down direction of the vehicle C.

[0011] The resin member 2 of this embodiment is a spoiler, which is an aerodynamic member (so-called aero parts). The structure 4 of this embodiment is a roof panel of a vehicle C. The fastening structure 1 is not limited to this, and may be a fastening structure for attaching an exterior member or an interior member to a frame structure or panel that forms an aircraft, a ship, a building, or the like.

[0012] The resin member 2 includes a first resin member 21 and a second resin member 31 facing the first resin member 21. The first resin member 21 is disposed on the structural body 4 side, and the second resin member 31 is disposed on the opposite side of the structural body 4 with the first resin member 21 in between. In this embodiment, the first resin member 21 is an inner panel of the spoiler. In contrast, the second resin member 31 is an outer panel of the spoiler, and forms the design surface of the vehicle C.

[0013] The first resin member 21 is attached to the structure 4 by a fastening member 10. In this embodiment, the fastening member 10 is a bolt 11 and a nut 12.

[0014] The first resin member 21 includes a first plate-shaped portion 22 and a protruding structure 23 that protrudes downward from the first plate-shaped portion 22 in the third direction Z (the opposite direction to the arrow Z in FIG. 1).

[0015] The first plate-shaped portion 22 has an internal connecting portion 25 connected to the second resin member 31. In this embodiment, the internal connecting portion 25 is joined to the second resin member 31 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.

[0016] The protruding structure 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 structure 23 forms a space 23d that is defined by the tip surface 23a, the front vertical wall 23b, and the rear vertical wall 23c. The space 23d accommodates electrical components of the vehicle C, such as brake lights, an imaging device, or various sensors.

[0017] The second resin member 31 includes a second plate-shaped portion 32 and a folded-back portion 33 folded back from the second plate-shaped portion 32. The second plate-shaped portion 32 is in contact with the first plate-shaped portion 22 or faces the first plate-shaped portion 22 with a small gap therebetween. The folded-back portion 33 is hooked onto the rear vertical wall 23c of the first resin member 21. This causes the second resin member 31 to be locked to the first resin member 21.

[0018] The first resin member 21 and the second resin member 31 are made of a thermoplastic resin. The thermoplastic resin is, for example, polypropylene (PP). Polypropylene is a material that is more easily deformed than, for example, ASA resin. The thermoplastic resin is not limited to this, and other resins that can be selected include ABS resin, polyethylene (PE), polystyrene (PS), acrylic resin, polycarbonate (PC), polyamide, polyethylene terephthalate (PET), and modified polyphenylene ether (modified PPE).

[0019] Fig. 2 is a plan view of the resin member 2. Line BB in Fig. 2 corresponds to the cross section in Fig. 1. The resin member 2 is formed in a plate shape extending in a first direction X and a second direction Y intersecting the first direction X.

[0020] The resin member 2 has a first end Y1 and a second end Y2 opposite to the first end Y1 in the second direction Y. In this embodiment, in the fastened state, the first end Y1 is located further forward of the vehicle C (see FIG. 1) than the second end Y2 (in the direction opposite to the arrow Y in FIGS. 1 and 2). On the other hand, the second end Y2 is located further rearward of the vehicle C (in the direction of the arrow Y in FIGS. 1 and 2) than the first end Y1.

[0021] The fastening structure 1 of this embodiment will be described below. As shown in FIG. 1, the resin member 2 is fastened to a structural body 4 of a vehicle C from above and protrudes rearward (in the direction of arrow Y in FIG. 1). The rearward protruding portion of such a resin member 2 may collide with an object that moves upward (for example, a brush of a car wash machine), and this collision may result in an upward load F (hereinafter referred to as a "thrust-up load"). If the resin member 2 is made of a material that is relatively easy to deform (for example, polypropylene), the resin member 2 may deform at the fastening portion with the structural body 4 and fall off from the structural body 4. The fastening structure 1 of this embodiment prevents the resin member 2 from falling off from the structural body 4 in this way.

[0022] As shown in FIG. 2, in this embodiment, four fastening structures 1 (1a, 1b, 1c, 1d) are provided on a resin member 2. FIG. 3 is an exploded perspective view showing an enlarged view of fastening structure 1a. The following description will be given taking fastening structure 1a as an example, and fastening structures 1b to 1d will not be described because they have the same configuration as fastening structure 1a. As shown in FIGS. 3 and 4, fastening structure 1 includes a base 6 that holds fastening members 10.

[0023] The fastening member 10 includes a bolt 11 and a nut 12 that can be threaded onto the bolt 11 (see FIG. 1). The bolt 11 has an axis 10a, a first disk portion 10b that extends in a direction intersecting the axis 10a, and a second disk portion 10c that extends in a direction intersecting the axis 10a and is parallel to the first disk portion 10b. The nut 12 receives and fixes the axis 10a on the structure 4 side (see FIG. 1). The first disk portion 10b and the second disk portion 10c are spaced apart in the direction in which the axis 10a extends. In this embodiment, the first disk portion 10b and the second disk portion 10c are disk-shaped with the axis 10a at the center. However, the first disk portion 10b and the second disk portion 10c may be rectangular plates, such as square plates.

[0024] In this embodiment, the shaft 10a includes a male thread, and the nut 12 (see FIG. 1) includes a female thread that fits the male thread. In the fastened state, the direction in which the shaft 10a extends coincides with the third direction Z (the up-down direction of the vehicle C).

[0025] The seat 6 is provided on a surface 22a of the first plate-shaped portion 22 of the first resin member 21, and protrudes from this surface 22a along the third direction Z. In the fastened state, the seat 6 protrudes from the first plate-shaped portion 22 toward the structure 4 (see FIG. 1).

[0026] The base 6 has a top surface 60, a first side surface 61, a second side surface 62, a third side surface 63, and a fourth side surface 69. The top surface 60, the first side surface 61, the second side surface 62, the third side surface 63, and the fourth side surface 69 are plate-shaped.

[0027] The top surface 60 extends parallel to the first plate-shaped portion 22 and is spaced apart from the first plate-shaped portion 22 in the third direction Z.

[0028] The first side surface 61 extends in a direction intersecting the top surface 60 and connects the top surface 60 to the first plate-shaped portion 22. The second side surface 62 faces the first side surface 61 and extends in a direction intersecting the top surface 60 and connects the top surface 60 to the first plate-shaped portion 22. The third side surface 63 faces the top surface 60 and connects the top surface 60 to the first plate-shaped portion 22, and further connects the first side surface 61 to the second side surface 62. The fourth side surface 69 faces the third side surface 63 and extends in a direction intersecting the top surface 60 and connects the first side surface 61 to the second side surface 62.

[0029] The top surface 60, the first side surface 61, and the second side surface 62 form an opening 64. The opening 64 is provided at a first end 66, which is one end (one end in a direction intersecting the protruding direction of the base 6) in the first direction X (the vehicle width direction of the vehicle C) of the base 6, and opens toward the first direction X. In the present embodiment, the opening 64 opens toward the first direction X, but the present disclosure is not limited to this. For example, the opening 64 may open toward the second direction Y.

[0030] A guide portion 65 is formed on the top surface 60. In this embodiment, the guide portion 65 is a slit that extends along the first direction X and is continuous with the opening 64. The shaft 10a of the fastening member 10 is inserted into the guide portion 65 from the opening 64 along the first direction X (see the black arrow in FIG. 3). This allows the base 6 to restrict movement of the fastening member 10 in the in-plane directions of the top surface 60 (the first direction X and the second direction Y). Furthermore, the top surface 60 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.

[0031] The base 6 further has an end surface 67 (an example of a surface on one end side) on the first end 66 side of the top surface 60, and an inner surface 68 connected to the end surface 67 to define the guide portion 65.

[0032] The fastening structure 1 further includes a connecting member 8 that reinforces the base 6. The connecting member 8 is disposed inside the first side surface 61, the second side surface 62, the third side surface 63, and the fourth side surface 69. Specifically, the connecting member 8 is disposed between the first side surface 61 and the second side surface 62 in the first direction X, and is disposed on the opposite side of the base 6 from the third side surface 63 (i.e., the fourth side surface 69 side) in the second direction Y. The connecting member 8 is connected to two locations across the guide portion 65 of the base 6 (both sides of the guide portion) while covering the opening 64 of the base 6, as described below. The top surface 60 receives a force that tends to deform the guide portion 65 in a direction that pushes it apart due to the above-mentioned thrust load. By connecting both ends of the guide portion 65, the connecting member 8 can restrict the expansion of the guide portion 65 caused by such a force. As a result, the connecting member 8 can suppress deformation of the top surface 60 and, ultimately, the base 6 due to the thrust load.

[0033] The connecting member 8 is in the shape of a block facing the opening 64 in the first direction X. The connecting member 8 of this embodiment is disposed in contact with the end face 67 of the base 6 to which the fastening member 10 is attached, and is connected to the end face 67 by welding.

[0034] The connecting member 8 may be connected to the base 6 by thermal welding using vibration at the same time as joining the internal coupling portion 25 (see FIG. 1) of the first resin member 21 to the second resin member 31. This allows joining of the connecting member 8 to the base 6 and joining of the internal coupling portion 25 of the first resin member 21 to the second resin member 31 to be performed at the same time, making manufacturing easier. However, joining is not limited to this, and screws, bolts and nuts, adhesives, or other joining means may also be used.

[0035] The connecting member 8 has a main body portion 80, a first connecting portion 81, and a second connecting portion .

[0036] The main body 80 protrudes from the second plate-shaped portion 32 of the second resin member 31 toward the first plate-shaped portion 22 of the first resin member 21 in the third direction Z. The first plate-shaped portion 22 has a hole 24 that is a through-hole that penetrates along the third direction Z. The hole 24 is disposed adjacent to the first end 66 of the base 6 in a top view. The main body 80 protrudes via the hole 24 beyond the first plate-shaped portion 22 to the side of the structure 4 and covers the opening 64.

[0037] The first connecting portion 81 extends from the end of the main body portion 80 opposite the second plate-shaped portion 32 toward the guide portion 65 and is positioned inside the guide portion 65. The first connecting portion 81 is connected to the inner surface 68 of the guide portion 65. This allows the first connecting portion 81 to suppress deformation of the top surface 60 in the second direction Y near the opening 64. The first connecting portion 81 of the present embodiment is connected to both the first inner surface 68a on the first side surface 61 side of the guide portion 65 and the second inner surface 68b on the second side surface 62 side opposite the first inner surface 68a.

[0038] The first connecting portion 81 may include a curved surface 83 that faces the inside of the guide portion 65. The curved surface 83, together with the inner surface 68 of the guide portion 65, may surround the shaft 10a of the fastening member 10.

[0039] In this embodiment, the connecting member 8 has two second connecting portions 82. The two second connecting portions 82 are located outside the guide portion 65, are arranged on either side of the first connecting portion 81 in the second direction Y, and are connected to the end faces 67 of the base 6 on both sides of the guide portion 65. In this way, the second connecting portions 82 can connect the two end faces 67 across the guide portion 65 in the second direction Y.

[0040] The first connecting portion 81 and the second connecting portion 82 are connected to the base 6 in directions that intersect with each other (i.e., the first connecting portion 81 is in the second direction Y, and the second connecting portion 82 is in the first direction X) at the end 65a of the guide portion 65 that continues to the opening 64 of the base 6. This allows the connecting member 8 to suppress deformation of the top surface 60, the first side surface 61, and the second side surface 62 at the first end 66.

[0041] In this embodiment, as described above, the first end 66 of the base 6 is disposed adjacent to the hole 24 in a top view, and the opening 64 is connected to the hole 24. The connecting member 8 is provided in the second resin member 31 and protrudes beyond the first plate-shaped portion 22 of the first resin member 21 through the hole 24 to cover the opening 64. This makes it possible to reduce the number of parts.

[0042] In this embodiment, the connecting member 8 closes the guide portion 65 with the fastening member 10 attached to the base 6. Furthermore, in this embodiment, the connecting member 8 is welded to the base 6, and the first resin member 21 and the second resin member 31 are similarly joined. This allows the shaft 10a of the fastening member 10 to be surrounded by the inner surface 68 and the connecting member 8. Therefore, with the fastening member 10 attached to the base 6 of the fastening member 10, the resin member 2 can be placed facing the structure 4 and fastened, facilitating manufacturing.

[0043] As described above, the fastening structure 1 according to this embodiment can provide the following effects.

[0044] The fastening structure 1 of the present disclosure is A fastening structure (1) that fastens a resin member (2) to a structure (4) using a fastening member (10), a base 6 provided so as to protrude from the resin member 2 and capable of mounting a fastening member 10; The base 6 has a guide portion 65 that guides the fastening member 10 through an opening 64 provided at a first end 66 (one end thereof), A connecting member 8 that connects both side portions of the guide portion 65 is further provided.

[0045] This allows the connecting member 8 to close the guide portion 65. Therefore, the connecting member 8 can suppress deformation of the guide portion 65 at the first end portion 66 of the base 6. As a result, the fastening structure 1 can prevent the fastening member 10 from falling off the base 6.

[0046] Furthermore, the resin member 2 has a first resin member 21 on which the base 6 is provided and a second resin member 31 facing the first resin member 21, The first resin member 21 has a hole 24 on the first end 66 side (one end side) of the base 6, The connecting member 8 may be provided in the second resin member 31 and protrude through the hole 24.

[0047] This allows the connecting member 8 to connect the first resin member 21 and the second resin member 31. As a result, the connecting member 8 can prevent the first resin member 21 and the second resin member 31 from peeling off from each other.

[0048] Alternatively, the connecting member 8 may be welded to the base 6.

[0049] This allows the connecting member 8, the base 6, the first resin member 21, and the second resin member 31 to be joined all at once with the fastening member 10 attached to the base 6, facilitating manufacturing. Furthermore, with the fastening member 10 attached to the resin member 2, it can be placed facing the structure 4 and fastened, facilitating manufacturing.

[0050] Furthermore, the connecting member 8 has a first connecting portion 81 located inside the guide portion 65 and a second connecting portion 82 located outside the guide portion 65, The first connecting portion 81 may be connected to the inner surface 68 of the guide portion 65, and the second connecting portion 82 may be connected to the end face 67 (the face on one end side) of the first end portion 66 of the base 6.

[0051] As a result, the connecting member 8 is connected to the base 6 at a plurality of locations. Therefore, the connecting member 8 can suppress deformation of the base 6 in the vicinity of the first end 66.

[0052] As described above, the fastening structure of the present disclosure can provide a novel fastening structure that can suppress deformation of a resin member that holds a fastening member.

[0053] Although the present disclosure has been described above with reference to the embodiment, 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 arbitrarily combined as necessary.

[0054] In the above embodiment, the connecting member 8 is provided in the second resin member 31, but the present disclosure is not limited to this. That is, as shown in FIG. 5 , the connecting member 108 may be provided separately from the second resin member 31. The connecting member 108 may be disposed inside the first side surface 61, the second side surface 62, the third side surface 63, and the fourth side surface 69 (or inside the hole portion 24) and connected to the end surface 67 of the base 6. The connecting member 108 may also have a curved surface 183. The curved surface 183 may be smoothly continuous with the inner surface 68 of the guide portion 65. This makes it possible to prevent stress concentration at the boundary between the inner surface 68 of the guide portion 65 and the curved surface 183.

[0055] Furthermore, in the above embodiment, the base 6 holds the bolt 11, but this is not limiting and the base 6 may hold the nut 12 instead.

[0056] In the above embodiment, the base 6 has a top surface 60, a first side surface 61, a second side surface 62, a third side surface 63, and a fourth side surface 69. However, this is not limited thereto, and the base 6 may have a configuration without the fourth side surface 69. In a configuration without the fourth side surface 69, the top surface 60, the first side surface 61, and the second side surface 62 are flush with each other, and the connecting member 8 is disposed outside the first side surface 61, the second side surface 62, and the third side surface 63. An opening 64 is provided in the surface at one end of the base 6, and the guide portion 65 guides the fastening member 10 through this opening 64. The connecting member 8 is connected to the top surface 60, the first side surface 61, and the second side surface 62, thereby covering the opening 64 and closing the guide portion 65. Even with this configuration, the same effects as those of the above embodiment can be achieved. [Explanation of symbols]

[0057] 1 Fastening structure 2 Resin parts 4 Structure 6. Pedestal 8 Connecting members 10 Fastening members 21 First resin member 24 Hole 31 Second resin member 64 Aperture 65 Information Department 81 1st connection part 82 2nd connection part

Claims

1. A fastening structure for fastening a resin member to a structure by a fastening member, a base provided on the resin member so as to protrude therefrom and to which the fastening member can be attached; the base has a guide portion that guides the fastening member through an opening provided at one end thereof, The fastening structure further comprises a connecting member connecting both side portions of the guide portion.

2. the resin member includes a first resin member on which the seat is provided and a second resin member facing the first resin member, the first resin member has a hole on the one end side of the base, the connecting member is provided in the second resin member and protrudes through the hole; The fastening structure according to claim 1 .

3. The connecting member is welded to the base. The fastening structure according to claim 1 .

4. the connecting member has a first connecting portion located inside the guide portion and a second connecting portion located outside the guide portion, the first connecting portion is connected to an inner surface of the guide portion, The second connecting portion is connected to a surface of the base on the one end side. The fastening structure according to claim 1 .

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