Resin member

Abstract

To provide a resin member which is less likely to be disassembled even when it receives an unintended load, and is less likely to come off from a structure.SOLUTION: A resin member which is connected to a structure includes a connection part for being connected to the structure, and a fragile part provided around the connection part.SELECTED DRAWING: Figure 3

Description

[Technical Field]

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

[0002] Patent Document 1 discloses a spoiler that is attached to a vehicle to straighten the air around the vehicle while it is moving. Such a spoiler is connected to the vehicle body via fastening members such as bolts and nuts. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-124402 Summary of the Invention [Problem to be solved by the invention]

[0004] In such a resin member, it is preferable that deformation of the connecting portion where the fastening member is attached can be suppressed when a load is applied, and that the resin member can be prevented from falling off. The present disclosure provides a resin member that is unlikely to fall off from a structure even when an unintended load is applied due to a collision of an object, etc. [Means for solving the problem]

[0005] A resin member according to one embodiment of the present disclosure includes: A resin member connected to the structure, a connecting portion for connecting to the structure; a weakened portion provided around the connecting portion; Equipped with. [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 with 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 cross-sectional view illustrating the advantages of the weakened portion. [Figure 5] FIG. 10 is an exploded perspective view showing a resin member according to a second embodiment. [Figure 6] FIG. 10 is an exploded perspective view showing a resin member according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

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

[0009] As shown in FIG. 1, the resin member 2 is connected to a structural body 4 by a fastening member 10. In this embodiment, the resin member 2 is one component constituting a spoiler 20 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. 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 spoiler 20 includes a resin member 2 and an exterior member 3 facing the resin member 2. The resin member 2 is disposed on the structural body 4 side, and the exterior member 3 is disposed on the opposite side of the structural body 4 with the resin member 2 in between. In this embodiment, the resin member 2 is an inner panel of the spoiler. In contrast, the exterior member 3 is an outer panel of the spoiler, and forms the design surface of the vehicle C.

[0011] The resin member 2 is attached to the structure 4 by fastening members 10. In this embodiment, the fastening members 10 are bolts 10a and nuts 10b, but are not limited thereto. The fastening members 10 may be, for example, clips, screws, or other fastening members.

[0012] The resin member 2 includes a first plate-shaped portion 22 and a protruding structure 23 that protrudes downward from the first plate-shaped portion 22 (in the opposite direction to the arrow Z in FIG. 1).

[0013] The first plate-shaped portion 22 has a connecting portion 24 for connecting to the structure 4. In this embodiment, the connecting portion 24 is a base for holding the fastening member 10. In this embodiment, the connecting portion 24 holds the bolt 10a, but is not limited to this and may also hold a nut 10b. The first plate-shaped portion 22 also has an internal connecting portion 25 connected to the exterior member 3. In this embodiment, the internal connecting portion 25 is joined to the exterior member 3 by thermal welding. However, the joining is not limited to this and may also be by screws, bolts and nuts, adhesive, double-sided tape, or other joining means. The protruding structure 23 has a tip surface 23a, a first vertical wall 23b connecting the first plate-shaped portion 22 and the tip surface 23a, and a second vertical wall 23c connected to the tip surface 23a and facing the first vertical wall 23b.

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

[0015] The exterior member 3 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 second vertical wall 23c of the resin member 2. This causes the exterior member 3 to be locked to the resin member 2.

[0016] The resin member 2 and the exterior member 3 may be made of a thermoplastic resin. An example of the thermoplastic resin is 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 examples 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).

[0017] Fig. 2 is a bottom 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 second direction Y and a first direction X intersecting the second direction Y.

[0018] The resin member 2 has a first end X1 and a second end X2 opposite to the first end X1 in the first direction X. The first end X1 and the second end X2 correspond to one end (e.g., the left end) and the other end (e.g., the right end) of the resin member 2 in the vehicle width direction of the vehicle C when the resin member 2 is connected to the structure 4 by the fastening member 10. The resin member 2 has a first end Y1 (an example of one end) and a second end Y2 (an example of the other end) opposite to the first end Y1 in the second direction Y. The first end Y1 and the second end Y2 correspond to one end (e.g., the front end) and the other end (e.g., the rear end) of the resin member 2 in the longitudinal direction of the vehicle C when the resin member 2 is connected to the structure 4 by the fastening member 10.

[0019] 2, in this embodiment, the connecting portion 24 includes a first connecting portion 24a, a second connecting portion 24b, a third connecting portion 24c, and a fourth connecting portion 24d, all of which have the function of holding the fastening member 10. The first connecting portion 24a and the second connecting portion 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.

[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 exterior member 3. The first internal coupling portion 25a and the second internal coupling portion 25b are disposed closer to the first end portion Y1 in the second direction Y than the center between the first end portion Y1 and the second end portion Y2.

[0021] The resin member 2 has a weak portion 26 around the connecting portion 24 (in this embodiment, the first connecting portion 24a and the second connecting portion 24b). In this embodiment, the weak portion 26 is provided in the first plate-shaped portion 22. In this embodiment, the weak portion 26 includes a first weak portion 26a extending in the first direction X and a second weak portion 26b extending in the second direction Y. The first weak portion 26a and the second weak portion 26b are provided around the first connecting portion 24a and the second connecting portion 24b. Specifically, the first weak portion 26a and the second weak portion 26b are provided so as to surround the first connecting portion 24a and the second connecting portion 24b in a U-shape. In this embodiment, the first weak portion 26a is provided between two second weak portions 26b. The weak portion 26 is more likely to tolerate deformation than portions of the resin member 2 other than the weak portion 26 due to factors such as its structure, shape, or material.

[0022] The following describes the structure and function of the fragile portion 26. For convenience of explanation, the second fragile portion 26b and the first fragile portion 26a will be described in that order.

[0023] 3, in this embodiment, the second weak portion 26b is a slit provided in the resin member 2, one end of which reaches the first end Y1. In this embodiment, the second weak portion 26b is two slits, a first slit 261 and a second slit 262, which are spaced apart from each other. In this embodiment, the length of the first slit 261 is L1, and the width of the first slit 261 is constant. The length and width of the second slit 262 are the same as the length and width of the first slit 261. However, this is not a limitation, and the length and width of the second slit 262 may be different from the length and width of the first slit 261.

[0024] The length L1 of the first slit 261 may be longer than the distance L2 and the distance L3. The distance L2 is the distance between the first end Y1 and the first connecting portion 24a in the second direction Y. Here, the position of the first connecting portion 24a is the position of the fastening member 10 held by the first connecting portion 24a. The distance L3 is the distance between the first end Y1 and the first inner connecting portion 25a in the second direction Y. Here, the position of the first inner connecting portion 25a is the center position of the first inner connecting portion 25a in the second direction Y. Such a relationship between the length L1, the distance L2, and the distance L3 makes the second weak portion 26b more likely to deform. Note that the length L1 of the second weak portion 26b may be shorter than the distance L2 and the distance L3.

[0025] The first slit 261 is disposed between the first connecting portion 24a and the first internal connecting portion 25a in the first direction X. The second slit 262 is disposed between the second connecting portion 24b and the second internal connecting portion 25b in the first direction X. The first connecting portion 24a and the second connecting portion 24b are provided in an external connecting region 28 formed between the first slit 261 and the second slit 262. The external connecting region 28 is connected to the structure 4 (see FIG. 1 ) but is not connected to the exterior member 3.

[0026] The first internal connecting portion 25a is provided in an internal connecting region 27 formed on the opposite side of the external connecting region 28 in the first direction X, with the first slit 261 in between. The second internal connecting portion 25b is provided in an internal connecting region 27 formed on the opposite side of the external connecting region 28 in the first direction X, with the second slit 262 in between. The internal connecting region 27 is connected to the exterior member 3 but is not connected to the structure 4. The first internal connecting portion 25a and the second internal connecting portion 25b are connected to regions 35a and 35b of the exterior member 3.

[0027] The first weak portion 26a is connected to the second weak portion 26b. In the present embodiment, the first weak portion 26a includes a bellows portion 29 provided between the first slit 261 and the second slit 262. The first weak portion 26a in the present embodiment is provided between the second end Y2 (see FIG. 2) and the connecting portion 24 (the first connecting portion 24a and the second connecting portion 24b) in the second direction Y. In the first direction X, two connecting portions 24, the first connecting portion 24a and the second connecting portion 24b, are arranged in the region D (see FIG. 2) where the first weak portion 26a is provided. Furthermore, the bellows portion 29 is provided in, but is not limited to, the base portion 28a of the external connecting region 28.

[0028] Specifically, the external connection region 28 is defined by a first slit 261 and a second slit 262. The external connection region 28 has a base 28a connected to the first plate-shaped portion 22 and a tip 28b opposite to the base 28a.

[0029] In this embodiment, bellows portion 29 includes vertical wall 29a, horizontal wall 29b connected to vertical wall 29a, vertical wall 29c connected to horizontal wall 29b, and horizontal wall 29d connected to vertical wall 29c. Bellows portion 29 may have a structure in which these units are repeated multiple times. In the example of Fig. 3, bellows portion 29 includes two units.

[0030] In this embodiment, the bellows portion 29 is provided over the entire range between the first slit 261 and the second slit 262. This makes it easier for the resin member 2 to deform. However, this is not limiting, and the bellows portion 29 may be provided only in a portion between the first slit 261 and the second slit 262.

[0031] As shown in FIG. 1, the resin member 2 protrudes rearward of the vehicle C (see in particular the protruding structure 23). In such a resin member 2, the portion protruding rearward may collide with an object moving upward (such as a car wash brush), and this collision may result in an upward load F. The resin member 2 moves or deforms upward when subjected to the load F. (a) and (b) of FIG. 4 correspond to the CC cross section of FIG. 2. (a) of FIG. 4 shows the resin member 2 without the fragile portion 26. (b) of FIG. 4 shows the resin member 2 with the fragile portion 26.

[0032] As shown in FIG. 4(a), when a load F is applied, the exterior member 3 moves upward. Following this, the internal connecting portion 25 and the connecting portion 24 of the resin member 2 also tend to move upward. Meanwhile, the connecting portion 24 is fixed to the structure 4 by the fastening member 10. Therefore, the connecting portion 24 is pulled by the internal connecting portion 25 and the fastening member 10, causing it to deform or break. The deformation or breakage of the connecting portion 24 can cause the resin member 2 to fall off from the structure 4. In contrast, as shown in FIG. 4(b), the fragile portion 26 has a structure that allows the resin member 2 to deform. As a result, the transmission of force from the internal connecting portion 25 to the connecting portion 24 is suppressed, thereby suppressing the deformation of the connecting portion 24. This prevents the resin member 2 from falling off from the structure 4.

[0033] 3, in this embodiment, bellows portion 29 is easily deformed by warping around axis Ax. Axis Ax is an axis along the longitudinal direction of bellows portion 29, and in this embodiment, is an axis parallel to first direction X. In this embodiment, fragile portion 26 includes bellows portion 29, and therefore can allow more complex deformation of resin member 2.

[0034] In the present embodiment, the fragile portion 26 includes the first slit 261, the second slit 262, and the bellows portion 29, and surrounds the connecting portion 24. Therefore, the fragile portion 26 suppresses deformation of the connecting portion 24, while making the resin member 2 around the connecting portion 24 more easily deformable, and can prevent the resin member 2 from falling off the structure 4.

[0035] Next, a second embodiment of the present disclosure will be described with reference to FIG. 5, with reference to a configuration different from the first embodiment. As shown in FIG. 5, the first weak portion 26a of this embodiment may be a narrow portion 28d. In this embodiment, the external coupling region 28 includes a narrow portion 28d provided at the base portion 28a and a wide portion 28c provided at the tip portion 28b. The wide portion 28c has a width W1. The narrow portion 28d has a width W2 that is smaller than W1.

[0036] In the present embodiment, the fragile portion 26 includes the first slit 261, the second slit 262, and the narrow width portion 28d, and is provided so as to surround the plurality of connecting portions 24. Therefore, the fragile portion 26 suppresses deformation of the plurality of connecting portions 24, while making the resin member 2 around these connecting portions 24 more easily deformable, and prevents the resin member 2 from falling off from the structure 4 (see FIG. 1).

[0037] In this embodiment, the narrow width portion 28d is easily deformed by warping around the axis Ax. The axis Ax is an axis along the longitudinal direction of the narrow width portion 28d, which is an axis parallel to the first direction X in this embodiment. The narrow width portion 28d is also easily deformed by twisting around the axis Ay. The axis Ay is an axis perpendicular to Ax, which is an axis parallel to the second direction Y in this embodiment. In this embodiment, the fragile portion 26 includes the narrow width portion 28d, which enables the resin member 2 to undergo complex deformation.

[0038] Next, a third embodiment of the present disclosure will be described with reference to Fig. 6, which describes a configuration different from the first and second embodiments. As shown in Fig. 6, the first fragile portion 26a of this embodiment includes a narrow portion 28d and a bellows portion 29. In this embodiment, the narrow portion 28d and the bellows portion 29 are provided in the base portion 28a of the external coupling region 28, although this is not limited thereto.

[0039] In this embodiment, bellows portion 29 is provided over the entire range of narrow width portion 28d in first direction X. This makes it easier for resin member 2 to deform. However, this is not limiting, and bellows portion 29 may be provided over only a part of narrow width portion 28d in first direction X.

[0040] In the present embodiment, the fragile portion 26 includes the first slit 261, the second slit 262, the narrow width portion 28d, and the bellows portion 29, and surrounds the connecting portion 24. Therefore, the fragile portion 26 suppresses deformation of the connecting portion 24, while making the resin member 2 around the connecting portion 24 more easily deformable, and can prevent the resin member 2 from falling off from the structure 4 (see FIG. 1).

[0041] In this embodiment, narrow width portion 28d and bellows portion 29 are easily deformed by warping around axis Ay. Narrow width portion 28d is also easily deformed by twisting around axis Ax. In this embodiment, fragile portion 26 includes narrow width portion 28d and bellows portion 29, and therefore can tolerate more complex deformation of resin member 2.

[0042] As described above, the resin member 2 according to this embodiment can provide the following effects.

[0043] The resin member 2 is a resin member 2 connected to the structure 4, a connecting portion 24 for connecting to the structure 4; a weakened portion 26 provided around the connecting portion 24; Equipped with.

[0044] Such a resin member 2 is unlikely to fall off from the structure even when subjected to an unintended load due to a collision with an object or the like.

[0045] The fragile portion 26 includes a first fragile portion 26a extending in the first direction X and a second fragile portion 26b extending in the second direction Y, The first weak portion 26a and the second weak portion 26b may be provided so as to surround the connecting portion 24.

[0046] As a result, the fragile portion 26 can suppress deformation of the connecting portion 24, and as a result, the resin member 2 can be prevented from falling off from the structure 4.

[0047] the connecting portion 24 is 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; The first weak portion 26a and the second weak portion 26b are connected to each other, The second weak portion 26b may reach the first end Y1.

[0048] This makes it difficult for the fragile portion 26 to transmit the load received by the second end portion Y2 to the connecting portion 24, and as a result, it is possible to prevent the resin member 2 from falling off from the structure 4.

[0049] The second weak portion 26b is two slits (a first slit 261 and a second slit) spaced apart from each other, The first weakened portion 26a may include a bellows portion 29 provided between the two slits.

[0050] As a result, the slits (first slits 261, second slits 262) and the bellows portion 29 allow the connecting portion 24 to move easily and independently, and are highly effective in suppressing the transmission of load.

[0051] A plurality of connecting portions 24 are provided, The first weak portion 26a and the second weak portion 26b may be provided so as to surround the plurality of connecting portions 24.

[0052] This makes it possible to suppress deformation of the plurality of connecting portions 24, and as a result, to suppress the resin member 2 from falling off from the structure 4.

[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 fragile portion 26 includes the first fragile portion 26a and the second fragile portion 26b. However, this is not limiting, and the fragile portion 26 may include only the first fragile portion 26a or only the second fragile portion 26b. For example, the fragile portion 26 may include only the first fragile portion 26a, which is the bellows portion 29. In this case, similar to the embodiment of FIG. 2, a plurality of connecting portions 24 may be provided in the region D (see FIG. 2) in the first direction X where the first fragile portion 26a (bellows portion 29) is provided.

[0055] In the above embodiment, the first weak portion 26a is the bellows portion 29 and the narrow portion 28d. However, the first weak portion 26a is not limited to this, and may be a thin wall, a bellows portion, a long hole, a groove, or any other easily deformable structure, shape, or material.

[0056] In the above embodiment, the second weak portion 26b is a slit. However, the second weak portion 26b is not limited to this, and may be a thin wall, a bellows portion, a slot, a groove, or any other easily deformable structure, shape, or material. For example, the weak portion 26 may include a first weak portion 26a and a second weak portion 26b, both of which are bellows portions.

[0057] In the above embodiment, the fragile portion 26 is provided so as to surround a plurality of connecting portions 24. However, this is not limiting, and the fragile portion 26 may be provided so as to surround one connecting portion 24.

[0058] In the above embodiment, the second weak portion 26b extends in a direction perpendicular to the first weak portion 26a, but this is not limited thereto. The second weak portion 26b may extend in a direction different from that of the first weak portion 26a. For example, the second weak portion 26b may extend obliquely from the first weak portion 26a. [Explanation of symbols]

[0059] 2 Resin parts 24 Connecting part 26 Weakened part 26a 1st weak point 26b 2nd weak part 261 First Slit 262 Second Slit 29 Bellows

Claims

1. A resin member connected to the structure, a connecting portion for connecting to the structure; a fragile portion provided around the connecting portion.

2. The fragile portion includes a first fragile portion extending in a first direction and a second fragile portion extending in a second direction different from the first direction, The resin member according to claim 1 , wherein the first weak portion and the second weak portion are provided so as to surround the connecting portion.

3. the connecting portion is disposed closer to the one end than a center between the one end and the other end of the resin member in the second direction, the first weak portion and the second weak portion are connected to each other, the second weakened portion reaches the one end. The resin member according to claim 2 .

4. the second weakened portion is two slits spaced apart from each other, The first weakened portion includes a bellows portion provided between the two slits. The resin member according to claim 3 .

5. The connecting portion is provided in plurality, The first weak portion and the second weak portion are provided so as to surround the plurality of connecting portions. The resin member according to claim 2 .

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