Resin member

Abstract

To provide a resin member that is less likely to be detached from a structure even when a load is applied.SOLUTION: A resin member fastened by a fastening member to an external structure includes: a plate-like part extending in a first direction and a second direction that intersects with the first direction and including a pedestal that holds the fastening member; a protrusion structure protruding from the plate-like part and extending in the first direction; and a bent part disposed in the plate-like part and disposed between the protrusion structure and the pedestal in the second direction. The bent part includes a protruding part protruding toward a side in which the protrusion structure protrudes from the plate-like part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] Patent Documents 1 to 3 disclose resin members that are attached to a vehicle. For example, Patent Document 1 discloses a rear spoiler that includes an upper member and a lower member. The upper member is fixed to the lower member. The lower member has a mounting base for attaching the rear spoiler to the vehicle body. A nut member is held on the mounting base, and a bolt member is fastened to the nut member from the vehicle body, thereby attaching the rear spoiler to the vehicle body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2024-001971 [Patent Document 2] Japanese Patent Application Laid-Open No. 2010-064671 [Patent Document 3] Japanese Patent Application Publication No. 2024-007066 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 has 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 protruding structure that protrudes from the plate-like portion and extends in the first direction, and a bending portion that is provided on the plate-like portion and is positioned between the protruding structure and the base in the second direction, and the bending portion includes a convex portion that protrudes on the side where the protruding structure protrudes from the plate-like portion. [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. 10 is a cross-sectional view illustrating the function of a bending portion. [Figure 4] FIG. 10 is a cross-sectional view showing a resin member according to another embodiment. [Figure 5] FIG. 10 is a top view showing a resin member according to another embodiment. 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 fastening members.

[0012] The first member 21 includes a first plate-shaped portion 22 (an example of a plate-shaped portion), a protruding structure 23 protruding from the first plate-shaped portion 22 downward in the third direction Z (the opposite direction to the arrow Z in Figure 1), and a bending portion 29 provided on the first plate-shaped portion 22.

[0013] The first plate-shaped portion 22 includes a base 24 for holding the fastening member 10. The first plate-shaped portion 22 further includes an internal connecting portion 25 connected to the second member 31. In this embodiment, the internal connecting portion 25 is disposed apart from the base 24 and joined to the second member 31 by thermal welding. However, joining is not limited to this, and may be done using screws, bolts and nuts, adhesive, double-sided tape, or other joining means. The protruding structure 23 includes a tip surface 23a, a front vertical wall 23b connecting the first plate-shaped portion 22 and the tip surface 23a, and a rear vertical wall 23c connected to the tip surface 23a and facing the front vertical wall 23b.

[0014] The protruding structure 23 forms a space 23d defined by the 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 bent portion 29 is disposed between the protruding structure 23 and the base 24 in the second direction Y. The bent portion 29 includes a convex portion 291 that protrudes toward the side where the protruding structure 23 protrudes from the first plate-shaped portion 22 (the opposite direction from the arrow Z in FIG. 1). By forming this convex portion 291, a concave portion 292 is formed on the opposite side of the convex portion 291. The concave portion 292 includes a first vertical wall 29a connected to the first plate-shaped portion 22, a second vertical wall 29b connected to the first plate-shaped portion 22 and facing the first vertical wall 29a, and a bottom wall 29c connecting the first vertical wall 29a and the second vertical wall 29b.

[0016] 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.

[0017] 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).

[0018] 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.

[0019] 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.

[0020] 2, the first plate-shaped portion 22 extends in the first direction X and the second direction Y. In this embodiment, the first plate-shaped portion 22 includes four seats 24 that are spaced apart from one another in the first direction X and the second direction Y. The four seats 24 include a first seat 24a, a second seat 24b, a third seat 24c, and a fourth seat 24d. All of these seats have the function of holding the fastening member 10.

[0021] The first pedestal 24a and the second pedestal 24b are arranged 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 pedestal 24c and the fourth pedestal 24d are arranged closer to the protruding structure 23 than the first pedestal 24a and the second pedestal 24b in the second direction Y. Of the four pedestals 24, the third pedestal 24c and the fourth pedestal 24d are the pedestals 24 closest to the protruding structure 23 in the second direction Y.

[0022] The distance between the third pedestal 24c and the fourth pedestal 24d in the first direction X is longer than the distance between the first pedestal 24a and the second pedestal 24b in the first direction X. The third pedestal 24c and the fourth pedestal 24d are the two pedestals 24 that are farthest from each other in the first direction X among the four pedestals 24.

[0023] The protruding structure 23 and the bent portion 29 all extend in the first direction X. The bent portion 29 is disposed in the second direction Y between the protruding structure 23 and the pedestal 24 (the third pedestal 24c and the fourth pedestal 24d) that is closest to the protruding structure 23. Because the bent portion 29 extends in the first direction X, the first vertical wall 29a, the second vertical wall 29b, and the bottom wall 29c all extend in the first direction X.

[0024] The bent portion 29 has the convex portion 291, and thus is easily bent around the axis Ax along the first direction X. This prevents the base 24 from being broken, and ultimately prevents the resin member 2 from falling off the structure 4. Specifically, as shown in FIG. 3 , the resin member 2 protrudes rearward from the vehicle C (see the protruding structure 23 in particular). With such a resin member 2, the rearward protruding portion may collide with an object moving upward, and may receive an upward load F due to this collision. The resin member 2 receives the upward load F and moves or deforms upward. If the bent portion 29 were not present, the base 24 would receive the upward load F via the first plate-shaped portion 22. Meanwhile, the base 24 is fixed to the structure 4 by the fastening member 10, and receives a downward reaction force from the fastening member 10. This causes the base 24 to break, and the resin member 2 to fall off the structure 4. In contrast, in this embodiment, the bending portion 29 is disposed between the protruding structure 23 and the base 24, and bends when it receives an upward load F (see arrow A). The bending of the bending portion 29 makes it difficult for the upward load F to be transmitted to the base 24. The bending portion 29 has the convex portion 291, which improves the ease of bending. This prevents the base 24 from being damaged, and ultimately prevents the resin member 2 from falling off the structure 4.

[0025] 2, it is preferable that the bent portion 29 (the convex portion 291 and the concave portion 292) is present in the region A3 and the region A5 in the first direction X. The region A3 and the region A5 are regions where the third seat 24c and the fourth seat 24d are present, respectively, in the first direction X. By being present in the region A3 and the region A5 in the first direction X, the bent portion 29 can suppress the transmission of the upward load F to the third seat 24c and the fourth seat 24d, which are arranged among the four seats 24 closest to the protruding structure 23 in the second direction Y.

[0026] The bent portion 29 (the convex portion 291 and the concave portion 292) may be present continuously in the region A3, the region A4, and the region A5 in the first direction X. The region A4 is the region between the third seat 24c and the fourth seat 24d in the first direction X. As described above, the third seat 24c and the fourth seat 24d are the two seats 24 that are farthest from each other in the first direction X among the four seats 24. By having the bent portion 29 present continuously in the region A3, the region A4, and the region A5, it is possible to suppress the transmission of the upward load F to all the seats 24 provided on the first member 21.

[0027] The bent portion 29 (the convex portion 291 and the concave portion 292) may be continuously present in the region A2, the region A3, the region A4, the region A5, and the region A6 in the first direction X. The region A2 and the region A6 are regions outside the region where the base 24 is present in the first direction X, and are regions where the protruding structure 23 is provided in the first direction X. That is, the bent portion 29 (the convex portion 291 and the concave portion 292) extends beyond the region where the base 24 is present in the first direction X, and is present throughout the region where the protruding structure 23 is provided in the first direction X. The presence of the bent portion 29 (the convex portion 291 and the concave portion 292) throughout the region where the protruding structure 23 is provided in the first direction X can suppress the transmission of the upward load F caused by the protruding structure 23. Furthermore, by ensuring the length of the convex portion 291 in the first direction X, the ease of bending of the bent portion 29 can be improved.

[0028] 2, the bending portion 29 (the convex portion 291 and the concave portion 292) may be present continuously over the entire area between the first end X1 and the second end X2 of the first plate-shaped portion 22 in the first direction X. In other words, the length of the bending portion 29 (the convex portion 291 and the concave portion 292) in the first direction X is approximately equal to the length of the first plate-shaped portion 22 in the first direction X. This maximizes the ease of bending the bending portion 29.

[0029] The length of the bent portions 29 (the convex portions 291 and the concave portions 292) in the first direction X may be adjusted to avoid interference with structures provided on the resin member 2 or the structure 4. For example, there is a case where the structures provided on the structure 4 are arranged in the region A1 and the region A7. The region A1 and the region A7 are regions outside the protruding structure 23 in the first direction X. In such a case, the bent portions 29 (the convex portions 291 and the concave portions 292) may be present only in the region A2, the region A3, the region A4, the region A5, and the region A6. In other words, the length of the bent portions 29 (the convex portions 291 and the concave portions 292) in the first direction X may be shorter than the length of the protruding structure 23 in the first direction X.

[0030] The bent portions 29 (protrusions 291 and recesses 292) may be present intermittently along the first direction X so as to avoid interference with structures provided in the resin member 2 or the structure 4. For example, the bent portions 29 may be composed of a plurality of small bent portions spaced apart from each other in the first direction X. In this case, openings may be provided in the areas of the small bent portions in the first member 21 so as to avoid interference with the structures.

[0031] 2, in this embodiment, the protruding structure 23 is slightly curved and has end points 231 and 232. The end points 231 and 232 are end points located on the convex portion 291 side of the protruding structure 23 in the second direction Y and are end points located on both ends of the protruding structure 23 in the first direction X. The bent portion 29 (the convex portion 291 and the concave portion 292) may be located between the pedestal 24 (the third pedestal 24c and the fourth pedestal 24d) and a straight line 233 connecting the two end points 231 and 232 in the second direction Y. By arranging the bent portion 29 in such a region, bending of the first member 21 at the bent portion 29 becomes easy regardless of the shape of the protruding structure 23.

[0032] It may be desirable for the bending portion 29 to bend when the upward load F is excessively large, but not to bend when the upward load F is relatively small. As shown in FIGS. 4 and 5 , the bending portion 29 may include a rib 29d for adjusting the bendability of the bending portion 29. The rib 29d is provided on the bottom wall 29c and connects the first vertical wall 29a and the second vertical wall 29b. In the example of FIG. 5(a), the rib 29d extends along the second direction Y. In the example of FIG. 5(b), the rib 29d is inclined with respect to the second direction Y. The rib 29d in FIG. 5(a) exhibits an effect of reducing the bendability of the bending portion 29 more than the rib 29d in FIG. 5(b). Conversely, the rib 29d in FIG. 5(b) exhibits an effect of increasing the bendability of the bending portion 29 more than the rib 29d in FIG. 5(a). The ease of bending of the bending portion 29 may be adjusted by adjusting the thickness of the rib 29d in the first direction X, the height of the rib 29d in the third direction Z, the pitch of the arrangement of the rib 29d in the first direction X, the number of ribs 29d, the angle of the rib 29d with respect to the second direction Y, etc.

[0033] 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 first plate-shaped portion 22 that extends in a first direction X and a second direction Y intersecting the first direction X and includes a base 24 that holds the fastening member 10, a protruding structure 23 that protrudes from the first plate-shaped portion 22 and extends in the first direction X, and a bending portion 29 that is provided on the first plate-shaped portion 22 and is disposed between the protruding structure 23 and the base 24 in the second direction Y. The bending portion 29 includes a convex portion 291 that protrudes on the side where the protruding structure 23 protrudes from the first plate-shaped portion 22. The bending portion 29 includes the convex portion 291, which allows the bending portion 29 to bend around an axis Ax along the first direction X due to an upward load F. The bending of the bending portion 29 suppresses or reduces transmission of the upward load F to the base 24. The bending portion 29 includes the convex portion 291, which improves the ease of bending. This prevents the base 24 from being damaged, and in turn prevents the resin member 2 from falling off the structure 4.

[0034] The protruding portion 291 may extend beyond the base 24 in the first direction X. By ensuring the length of the protruding portion 291, the ease of bending of the bending portion 29 can be increased.

[0035] A recess 292 may be provided on the side of the first plate-shaped portion 22 opposite the protrusion 291. The recess 292 may have a first vertical wall 29a extending in the first direction X, a second vertical wall 29b extending in the first direction X opposite the first vertical wall 29a, a bottom wall 29c connecting the first vertical wall 29a and the second vertical wall 29b, and a rib 29d provided on the bottom wall 29c connecting the first vertical wall 29a and the second vertical wall 29b. The ease of bending of the bending portion 29 can be adjusted by adjusting the thickness of the rib 29d in the first direction X, the height of the rib 29d in the third direction Z, the arrangement pitch of the ribs 29d in the first direction X, the number of ribs 29d, the angle of the rib 29d with respect to the second direction Y, and the like.

[0036] The ribs 29d may be inclined with respect to the first direction X and the second direction Y. Compared to ribs 29d extending in the second direction Y, this increases the ease of bending of the bending portion 29.

[0037] The protruding structure 23 may have two end points 231, 232 located on the convex portion 291 side in the second direction Y and located at both ends in the first direction X. The convex portion 291 may be disposed between the base 24 and a straight line 233 connecting the two end points 231, 232. This makes it easier for the first member 21 to deform at the bent portion 29 regardless of the shape of the protruding structure 23. [Explanation of symbols]

[0038] 2: resin member, 21: first member, 31: second member, 23: protruding structure, 24: base, 25: internal connecting portion, 29: bending portion, 291: convex portion

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 protruding structure protruding from the plate-like portion and extending in the first direction; a bending portion provided on the plate-shaped portion and disposed between the protruding structure and the base in the second direction; and The bent portion includes a convex portion that protrudes on a side where the protruding structure protrudes from the plate-shaped portion. Resin parts.

2. The protrusion extends beyond the base in the first direction. The resin member according to claim 1 .

3. a recessed portion is provided on the opposite side of the plate-shaped portion from the protruding portion, The recess includes a first vertical wall extending in the first direction, a second vertical wall facing the first vertical wall and extending in the first direction, a bottom wall connecting the first vertical wall and the second vertical wall, and a rib provided on the bottom wall connecting the first vertical wall and the second vertical wall. The resin member according to claim 1 .

4. the rib is inclined with respect to the first direction and the second direction; The resin member according to claim 3 .

5. the protruding structure has two end points located on the convex portion side in the second direction and on both ends in the first direction, The protrusion is disposed between the base and the straight line connecting the two end points. The resin member according to claim 1 .

Images