Resin member

Abstract

To provide a resin member that is hard to come off from a structure even when subjected to a load.SOLUTION: A resin member that is fastened to an external structure by means of a fastening member includes a plate-like part that extends in a first direction and a second direction intersecting the first direction and includes a base that retains the fastening member, a first protruding structure that protrudes from the plate-like part in a third direction intersecting the first direction and the second direction and extends in the first direction, and a second protruding structure that protrudes from the plate-like part in the third direction, is continuous with the first protruding structure, and extends in the second direction. The first protruding structure includes a first tip surface that is a distal surface on a protruding side, and the second protruding structure includes a second tip surface that is a distal surface on the protruding side and is continuously connected from the first tip surface.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a resin member. [Background technology]

[0002] Patent Documents 1 and 2 disclose resin spoilers that are attached to vehicles. In Patent Document 1, the spoiler includes an upper member that is primarily a design element, and a lower member that is located behind the upper member. The upper member is joined to the lower member by vibration welding. The lower member includes a boss for mechanically fixing the spoiler to a body panel. The boss has a mounting hole in which a nut is disposed. A bolt that passes through the mounting hole in the body panel is threaded into the nut, thereby fixing the boss to the body panel. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-157783 [Patent Document 2] Japanese Patent Application Laid-Open No. 2001-347969 Summary of the Invention [Problem to be solved by the invention]

[0004] Resin components such as spoilers may be subjected to unintended loads due to collisions with objects, etc. Even in such cases, it is desirable for the resin components not to fall off from structures such as vehicle bodies. The present disclosure provides a resin component that is unlikely to fall off from structures even when subjected to loads. [Means for solving the problem]

[0005] A resin member according to one embodiment of the present disclosure is a resin member that is fastened to an external structure by a fastening member, and includes: a plate-like portion that extends in a first direction and a second direction intersecting the first direction and includes a base that holds the fastening member; a first protruding structure that protrudes from the plate-like portion in a third direction intersecting the first direction and the second direction and extends in the first direction; and a second protruding structure that protrudes from the plate-like portion in the third direction, is continuous with the first protruding structure, and extends in the second direction, wherein the first protruding structure includes a first tip surface that is a tip surface on the protruding side, and the second protruding structure includes a second tip surface that is a tip surface on the protruding side and is continuously connected to the first tip surface. [Effects of the Invention]

[0006] According to the present disclosure, it is possible to provide a resin member that is unlikely to fall off from a structure even when subjected to an unintended load due to a collision of an object or the like. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. [Figure 2] FIG. [Figure 3] FIG. [Figure 4] FIG. 10 is a bottom view illustrating the function of the second protruding structure; DETAILED DESCRIPTION OF THE INVENTION

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

[0009] As shown in Fig. 1, in this embodiment, the resin member 2 is a spoiler attached to a vehicle C, and the structural body 4 is a roof panel of the vehicle C. The first direction X in Fig. 1 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 the up-down direction of the vehicle C. The resin member 2 is not limited to the vehicle C, and may be a member attached to a framework or panel forming an aircraft, ship, building, or other structure.

[0010] The resin member 2 includes a first member 21 and a second member 31 facing the first member 21. The first member 21 is disposed on the structural body 4 side, and the second member 31 is disposed on the opposite side of the structural body 4 with the first member 21 in between. In this embodiment, the first member 21 is an inner panel of the spoiler. The second member 31 is an outer panel of the spoiler, and forms the design surface of the vehicle C.

[0011] The first member 21 is attached to the structure 4 by fastening members 10. In this embodiment, the fastening members 10 are bolts 10a and nuts 10d, but are not limited thereto. The fastening members 10 may be, for example, clips, screws, or other fasteners.

[0012] The first member 21 includes a first plate-shaped portion 22 (an example of a plate-shaped portion) and a first protruding structure 23 protruding downward in the third direction Z from the first plate-shaped portion 22 (the opposite direction to the arrow Z in Figure 1).

[0013] The first plate-shaped portion 22 has a seat 24 for holding the fastening member 10. The first plate-shaped portion 22 further has an internal connecting portion 25 connected to the second member 31. In this embodiment, the internal connecting portion 25 is joined to the second 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. The first protruding structure 23 has a first tip surface 23a which is the tip surface on the protruding side, a front vertical wall 23b which connects the first plate-shaped portion 22 and the first tip surface 23a, and a rear vertical wall 23c which is connected to the first tip surface 23a and faces the front vertical wall 23b.

[0014] The first protruding structure 23 forms a space 23d defined by the first tip surface 23a, the front vertical wall 23b, and the rear vertical wall 23c. The space 23d can accommodate electrical components such as brake lights of the vehicle C, an imaging device, or various sensors.

[0015] The second 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 member 21. This causes the second member 31 to be locked to the first member 21.

[0016] The first member 21 and the second member 31 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 ABS resin, polyethylene (PE), polystyrene (PS), acrylic resin, polycarbonate (PC) resin, polyamide, polyethylene terephthalate (PET), and modified polyphenylene ether (modified PPE).

[0017] Fig. 2 is a bottom view of the resin member 2. Line BB in Fig. 2 corresponds to the cross section of Fig. 1. The resin member 2 extends in a first direction X and a second direction Y intersecting the first direction X.

[0018] The first member 21 has a first end X1 and a second end X2 opposite the first end X1 in the first direction X. The first member 21 has a first end Y1 and a second end Y2 opposite the first end Y1 in the second direction Y.

[0019] As shown in FIG. 2 , in this embodiment, the seat 24 includes a first seat 24a, a second seat 24b, a third seat 24c, and a fourth seat 24d. These seat 24s each have the function of holding the fastening member 10. The first seat 24a and the second seat 24b are disposed closer to the first end Y1 than the center between the first end Y1 and the second end Y2 in the second direction Y. The third seat 24c and the fourth seat 24d are disposed closer to the first protruding structure 23 than the first seat 24a and the second seat 24b in the second direction Y. The third seat 24c is disposed closer to the first end X1 than the first seat 24a and the second seat 24b in the first direction X. The fourth seat 24d is disposed closer to the second end X2 than the first seat 24a and the second seat 24b in the first direction X.

[0020] In this embodiment, the internal coupling portion 25 includes a first internal coupling portion 25a and a second internal coupling portion 25b, both of which have the function of coupling to the second plate-shaped portion 32 of the second member 31. The first internal coupling portion 25a and the second internal coupling portion 25b are disposed closer to the first end portion Y1 than the center between the first end portion Y1 and the second end portion Y2 in the second direction Y.

[0021] The first member 21 further includes second protruding structures 27, 28 that are continuous with the first protruding structure 23. In this embodiment, the second protruding structure 27 is connected to a second end 232 on the second end X2 side of the first protruding structure 23. The second protruding structure 28 is connected to a first end 231 on the first end X1 side of the first protruding structure 23.

[0022] The following describes in detail the second protruding structure 27. The second protruding structure 28 has the same structure as the second protruding structure 27, and therefore the description thereof will be omitted.

[0023] As shown in FIG. 3 , the second protruding structure 27 protrudes downward from the first plate-shaped portion 22 in the third direction Z (the opposite direction to the arrow Z in FIG. 3 ). That is, the second protruding structure 27 protrudes in the same direction as the first protruding structure 23 in the third direction Z. The second protruding structure 27 has a second distal end surface 27a, which is the distal end surface on the protruding side, an inner vertical wall 27b connecting the first plate-shaped portion 22 and the second distal end surface 27a, and an outer vertical wall 27c connected to the second distal end surface 27a and facing the inner vertical wall 27b. While the first protruding structure 23 extends in the first direction X, the second protruding structure 27 extends in the second direction Y. The second protruding structure 27 has a first end 271 and a second end 272 opposite the first end 271 in the second direction Y. The first end 271 of the second protruding structure 27 is connected to the second end 232 of the first protruding structure 23 .

[0024] The second tip surface 27a of the second protruding structure 27 is continuously connected to the first tip surface 23a of the first protruding structure 23 at a boundary 273. The boundary 273 is the boundary between the second tip surface 27a and the first tip surface 23a. In other words, the second tip surface 27a is connected to the first tip surface 23 at the boundary 273 without bending. Alternatively, the second tip surface 27a is connected flush with the first tip surface 23a at the boundary 273. The inner vertical wall 27b of the second protruding structure 27 is connected to the front vertical wall 23b of the first protruding structure 23. The outer vertical wall 27c of the second protruding structure 27 is connected to the rear vertical wall 23c of the first protruding structure 23.

[0025] The function of the second protruding structure 27 will now be described. As shown in FIG. 1, the resin member 2 protrudes rearward from the vehicle C (see the first protruding structure 23 in particular). With such a resin member 2, the rearward protruding portion may collide with an object moving upward, and may be subjected to an upward load F due to this collision.

[0026] When subjected to an upward load F, the resin member 2 is likely to bend or curve at the boundary 233 between the first plate-shaped portion 22 and the first protruding structure 23. This is because, as shown in FIG. 1 , the first member 21 is bent at the boundary 233 and is therefore likely to be subjected to stress from the load F, and because, as shown in FIG. 4 , the boundary 233 extends along the first direction X. As shown in FIG. 4 , the first protruding structure 23 extends in the first direction X, and therefore the boundary 233 also extends in the first direction X. When subjected to the upward load F, the first protruding structure 23 is likely to bend around the axis Ax relative to the first plate-shaped portion 22. This bending causes the first plate-shaped portion 22 to move in the second direction Y, thereby deforming the base 24, and thereby releasing the fastening member 10 from the base 24. Release of the fastening member 10 means that the resin member 2 falls off the structure 4.

[0027] As shown in FIG. 4 , in this embodiment, the first protruding structure 23 is connected to the second protruding structures 27, 28 extending in the second direction Y. The second protruding structures 27, 28 reinforce the first protruding structure 23 and suppress bending of the first protruding structure 23 around the axis Ax along the boundary 233. In addition, the second tip surface 27a of the second protruding structure 27 (as well as the second protruding structure 28) is continuously connected to the first protruding surface 23a of the first protruding structure 23. In other words, the second protruding structure 27 is connected to the first protruding structure 23 without bending. This continuous connection suppresses deformation of the second protruding structure 27 itself at the boundary 273 with the first protruding structure 23. This allows the base 24 to maintain the fastening member 10 and prevent the resin member 2 from falling off the structure 4.

[0028] Returning to FIG. 2, as described above, the second protruding structure 27 has a first end 271 connected to the first protruding structure 23, and a second end 272 opposite the first end 271. In this embodiment, the pedestal 24 (fourth pedestal 24d) is disposed between the first protruding structure 23 and the second end 272 in the second direction Y. Due to the presence of the second protruding structure 27, the region of the first plate-shaped portion 22 between the first protruding structure 23 and the second end 272 is less susceptible to the influence of the upward load F and is less likely to deform. By being located in such a region, the pedestal 24 can more easily maintain the fastening member 10 in place.

[0029] In this embodiment, the first member 21 includes two second protruding structures 27, 28. The pedestal 24 (third pedestal 24c and fourth pedestal 24d) is disposed between the two second protruding structures 27, 28. Due to the presence of the second protruding structures 27, 28, the region between the two second protruding structures 27, 28 in the first plate-shaped portion 22 is less susceptible to the influence of the upward load F and is less likely to deform. By being located in such a region, the pedestal 24 can more easily maintain the holding of the fastening member 10.

[0030] As shown in FIG. 3 , in this embodiment, the base 24 includes a base 241, a first side wall 242, a second side wall 243, a third side wall 244, and a bottom wall 245. The first side wall 242 is connected to the base 241. The second side wall 243 is connected to the base 241 and faces the first side wall 242. The third side wall 244 is connected to the base 241 and is connected between the first side wall 242 and the second side wall 243. The bottom wall 245 is connected to the first side wall 242, the second side wall 243, and the third side wall 244, and has a slit 245a. The first side wall 242, the second side wall 243, the third side wall 244, and the bottom wall 245 form an internal space 246.

[0031] In this embodiment, the fastening member 10 is a bolt 10a and a nut 10d. The bolt 10a includes a first circular plate portion 10b and a second circular plate portion 10c. The first circular plate portion 10b is inserted into the internal space 246 of the base 24. The second circular plate portion 10c, together with the first circular plate portion 10b, sandwiches a bottom wall 245 of the base 24. The axis of the bolt 10a passes through a slit 245a in the base 24. The base 24 restricts movement of the bolt 10a in the third direction Z by positioning the bottom wall 245 between the first circular plate portion 10b and the second circular plate portion 10c. The base 24 restricts movement of the bolt 10a in the first direction X and the second direction Y by passing the shaft of the bolt 10a through the slit 245a or by surrounding the first circular plate portion 10b with the first side wall 242, the second side wall 243, and the third side wall 244.

[0032] In this embodiment, the base 24 further includes a rib 247 connected to the base 241 and the first side wall 242. The rib 247 reinforces the first side wall 242 and prevents deformation of the first side wall 242. The base 24 may further include a rib connected to the base 241 and the second side wall 243, and a rib connected to the base 241 and the third side wall 244.

[0033] As described above, when the resin member 2 is subjected to an upward load F, the second protruding structures 27, 28 suppress deformation of the first protruding structure 23 around the axis Ax. However, when the upward load F is excessively large, the second protruding structures 27, 28 alone may not be able to sufficiently suppress deformation of the first plate-shaped portion 22. In this embodiment, to prepare for such a case, the first plate-shaped portion 22 includes a partition structure 29 that blocks or reduces transmission of stress from the portion of the first plate-shaped portion 22 surrounding the base 24 to the base 24.

[0034] As shown in FIG. 3, in this embodiment, the partition structure 29 is a concave-convex structure that surrounds the entire periphery of the base 24. In this embodiment, the partition structure 29 includes a first concave structure 291, a second concave structure 292, a third concave structure 293, and a fourth concave structure 294. The first concave structure 291 and the third concave structure 293 are disposed on different sides of the base 24 in the second direction Y. The second concave structure 292 and the fourth concave structure 294 are disposed on different sides of the base 24 in the first direction X. As shown in FIG. 1, the first concave structure 291 is formed by a convex structure that protrudes upward in the third direction Z (the direction of arrow Z in FIG. 1) from the first plate-shaped portion 22. The second concave structure 292, the third concave structure 293, and the fourth concave structure 294 are also formed in a similar manner.

[0035] Returning to FIG. 3 , the first recessed structure 291 extends along the first direction X and is located between the base 24 and the first protruding structure 23. The first recessed structure 291 is easily deformed around the first direction X. When the first plate-shaped portion 22 is deformed around the first direction X due to an upward load F, the first recessed structure 291 is deformed preferentially over the base portion 241 of the base 24. The first recessed structure 291 blocks or reduces the transmission of stress around the first direction X to the base 24.

[0036] The upward load F can deform both the first protruding structure 23 and the second protruding structure 27. Because the second protruding structure 27 extends in the second direction Y, it can deform around an axis along the second direction Y. In response to this, the second recessed structure 292 deforms preferentially over the base 241 of the base 24. The second recessed structure 292 blocks or reduces the transmission of stress to the base 24 around the second direction Y.

[0037] The same applies to the third recessed structure 293 and the fourth recessed structure 294.

[0038] The rib 247 may be completed within the range of the base 241. In other words, the rib 247 does not reach the first plate-shaped portion 22, the first protruding structure 23, or the second protruding structures 27 and 28. This ensures isolation of the base 241 of the pedestal 24.

[0039] In this embodiment, the base 241 has a quadrangular shape and has four corners. Each corner may have an R (radius) formed by a curve 241a. This makes it possible to prevent stress concentration at the corners.

[0040] As described above, the resin member 2 is fastened to the external structure 4 by the fastening member 10. The resin member 2 includes a plate-like portion 22, a first protruding structure 23, and second protruding structures 27 and 28. The plate-like portion 22 extends in a first direction X and a second direction Y intersecting the first direction X and includes a seat 24 that holds the fastening member 10. The first protruding structure 23 protrudes from the plate-like portion 22 in a third direction Z intersecting the first direction X and the second direction Y and extends in the first direction X. The second protruding structure 27 protrudes from the plate-like portion 22 in the third direction Z, is continuous with the first protruding structure 23, and extends in the second direction Y. The first protruding structure 23 includes a first distal end surface 23a that is the distal end surface on the protruding side. The second protruding structure 27 includes a second distal end surface 27a that is the distal end surface on the protruding side and is continuously connected to the first distal end surface 23a. This makes it possible to provide a resin member that is less likely to fall off from the structure 4 even when subjected to an unintended load due to a collision with an object or the like.

[0041] The second protruding structure 27 may include a first end 271 continuous with the first protruding structure 23 and a second end 272 opposite the first end 271 in the second direction Y. The base 24 may be disposed between the first protruding structure 23 and the second end 272 in the second direction Y. The region of the first plate-shaped portion 22 between the first protruding structure 23 and the second end 272 is less likely to deform due to the presence of the second protruding structure 27. The base 24 is less likely to deform when located in such a region. This allows the base 24 to maintain its hold on the fastening member 10 and further prevents the resin member 2 from falling off the structure 4.

[0042] The resin member 2 may include two second protruding structures 27, 28. The base 24 may be disposed between the two second protruding structures 27, 28. The region between the two second protruding structures 27, 28 in the first plate-shaped portion 22 is less likely to deform due to the presence of the second protruding structures 27, 28. The base 24 is less likely to deform when located in such a region. This allows the base 24 to maintain its hold on the fastening member 10, and further prevents the resin member 2 from falling off the structure 4.

[0043] The first plate-shaped portion 22 is disposed between the second protruding structure 27 and the base 24 and includes a partition structure 29 that separates the base 24 from the second protruding structure 27. An upward load F may deform both the first protruding structure 23 and the second protruding structure 27. Because the second protruding structure 27 extends in the second direction Y, it deforms around an axis along the second direction Y. The second recessed structure 292 is deformed in response to this. The second recessed structure 292 deforms preferentially over the base 24, thereby preventing the deformation of the first plate-shaped portion 22 due to the deformation of the second protruding structure 27 from affecting the base 24.

[0044] The partition structure 29 includes a concave-convex structure that surrounds the entire periphery of the base 24. This allows the base 24 to be isolated.

[0045] 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.

[0046] In the above embodiment, the resin member 2 includes two second protruding structures 27, 28. However, this is not limiting, and the resin member 2 may include only one of the second protruding structures 27, 28. The resin member 2 may include three or more second protruding structures.

[0047] In the above embodiment, the second protruding structures 27, 28 are respectively connected to the second end 232 and the first end 231 of the first protruding structure 23. However, this is not limiting, and either or both of the second protruding structures 27, 28 may be connected to the center of the first protruding structure 23 in the first direction X.

[0048] In the above embodiment, the seat 24 holds the bolt 10a, but is not limited to this and may hold the nut 10d.

[0049] In the above embodiment, the partition structure 29 surrounds the entire periphery of the base 24. However, this is not limiting, and the partition structure 29 does not necessarily have to surround the entire periphery. The partition structure 29 may include at least one of a first recessed structure 291, a second recessed structure 292, a third recessed structure 293, and a fourth recessed structure 294.

[0050] In the above embodiment, the partition structure 29 is a concave-convex structure, but is not limited to this, and the partition structure 29 may include a slit. [Explanation of symbols]

[0051] 2: resin member, 21: first member, 31: second member, 23: first protruding structure, 24: base, 27, 28: second protruding structure

Claims

1. A resin member fastened to an external structure by a fastening member, a plate-like portion extending in a first direction and a second direction intersecting the first direction and including a base for holding the fastening member; a first protruding structure protruding from the plate-like portion and extending in the first direction; a second protruding structure protruding from the plate-like portion, continuing from the first protruding structure, and extending in the second direction; and the first protruding structure includes a first tip surface that is a tip surface on the protruding side, the second protruding structure is a tip surface on the protruding side and includes a second tip surface that is continuously connected to the first tip surface, Resin parts.

2. the second protruding structure includes a first end portion continuous with the first protruding structure and a second end portion opposite the first end portion in the second direction, the base is disposed between the first protruding structure and the second end in the second direction; The resin member according to claim 1 .

3. the resin member includes two of the second protruding structures, the pedestal is disposed between the two second protruding structures; The resin member according to claim 1 .

4. the plate-shaped portion includes a partition structure disposed between the second protruding structure and the base, and partitioning the base from the second protruding structure; The resin member according to claim 1 .

5. The partition structure includes a concave-convex structure surrounding the entire periphery of the base. The resin member according to claim 4.

Images