Resin molded product

Abstract

To provide a resin molding easy of making a projection engage with a body part and hard to come off from the body part after being engaged.SOLUTION: A resin molding (10) has: a body part (20) having a first surface (21) including an engagement target part (21a), and a second surface (22) raised from the first surface (21); and a projection part (30) engaged with the engagement target part (21a) to project from the first surface (21). A claw part (40) of the projection part (30) keeps a first wall part (41) and a second wall part (42) disposed almost in a V shape to be able to flex. The apical surface of the second wall part (42) comes in contact with the top face of the engagement target part (21a). The claw part(40) is constituted so that one end (40a) being an end closer to a swing shaft (S) may flex under a load weaker than at the other end (40b) being an end farther from the swing shaft (S).SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a resin molded article. [Background technology]

[0002] For example, a long resin molded product is provided as an exterior component below a vehicle door. Patent Document 1 discloses a conventional technique related to such a resin molded product.

[0003] Patent Document 1 discloses a resin molded product called a splash guard that is attached to the lower part of the side of a vehicle body (the outer peripheral surface of the side sill). The resin molded product has a main body part that is generally L-shaped and includes a portion formed with discontinuous notches, and a protrusion part that is engaged with the notched portion of the main body part and protrudes from the main body part.

[0004] The protruding portion has a hole, and by aligning this hole with a hole in the vehicle body and attaching a clip, the resin molded product can be fixed to the vehicle body.

[0005] The protrusion is provided integrally with the main body so as to be able to swing. If a resin molded product were to be molded in such a shape that the protrusion is engaged with the main body from the beginning, a slide mold or the like would be required, making the molding die complicated. By configuring the protrusion to be able to swing, the resin molded product can be manufactured using a simple molding die. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 4753983 Summary of the Invention [Problem to be solved by the invention]

[0007] In a resin molded product in which the protrusion can swing relative to the main body, after the intermediate resin molded product is removed from the mold, the protrusion must be pushed into the main body to be engaged and completed as a resin molded product. When engaging the protrusion, it is desired that the protrusion can be easily engaged with the main body, but it is also desired that the protrusion is difficult to come off after being engaged with the main body.

[0008] An object of the present disclosure is to provide a resin molded product in which a protrusion can be easily engaged with a main body and which is difficult to come off from the main body after being engaged. [Means for solving the problem]

[0009] According to the present disclosure, a body portion having a first surface portion and a second surface portion rising from the first surface portion, a protruding portion that is integrally formed with the first surface portion so as to be swingable, is engaged with a locked portion formed on the first surface portion, and protrudes from the first surface portion; a portion of the protruding portion that is engaged with the engaged portion is configured by a first wall portion and a second wall portion that are arranged in a substantially V-shape and are configured by a deflectable claw portion; A tip surface of the second wall portion abuts on an upper surface of the locked portion, A resin molded product is provided in which the claw portion extends in a direction intersecting the swing axis of the protrusion, and one end, which is the end closer to the swing axis, is configured to bend under a weaker load than the other end, which is the end farther from the swing axis. Effect of the Invention

[0010] According to the present disclosure, it is possible to provide a resin molded product in which a protrusion can be easily engaged with a main body portion and which is difficult to come off from the main body portion after being engaged. [Brief description of the drawings]

[0011] [Figure 1] 1 is a perspective view of a resin molded product according to an embodiment of the present invention. [Diagram 2] FIG. 2 is an enlarged view of part 2 of FIG. [Diagram 3] 3 is a diagram illustrating an intermediate product of the resin molded product shown in FIG. 2. [Figure 4] 3 is a cross-sectional view showing the protrusion shown in FIG. 2 being pressed into the main body portion. FIG. [Diagram 5] 3 is a perspective view of the protrusion shown in FIG. 2 as viewed from below when the protrusion is being pushed into the main body. [Figure 6] FIG. 6 is a view taken along the arrow 6 in FIG. [Figure 7] FIG. 7 is a view taken along the arrow 7 in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] An embodiment of the present invention will be described below with reference to the attached drawings. The following description will be based on an example in which a resin molded product is used as an exterior part of a vehicle. In the description, left and right refer to left and right based on the vehicle occupant, and front and rear refer to front and rear based on the vehicle's traveling direction. In the drawings, Fr refers to the front based on the vehicle, Rr refers to the rear, Le refers to the left as seen by the vehicle occupant, Ri refers to the right as seen by the occupant, Up refers to the top, and Dn refers to the bottom.

[0013] <Example> Please refer to Fig. 1. The resin molded product 10 is an exterior component that is attached to the outer surface of a side sill that constitutes the lower part of the vehicle body. The resin molded product 10 is formed by, for example, injection molding, and is fixed to the side sill via a clip.

[0014] The resin molded product 10 has an elongated body portion 20 having a substantially L-shape, and a plurality of protrusions 30 formed integrally with the body portion 20 and engaged with the body portion 20. The protrusions 30 are portions for attaching clips.

[0015] Please refer to Figures 2 and 3. The resin molded product 10 is manufactured by forming an intermediate product 10A as shown in Figure 3 by injection molding, and swinging and pushing the protruding portion 30 toward the main body portion 20. If it is attempted to mold the shape as shown in Figure 2 by injection molding, multiple slide dies or the like will be required, and the molding die will be expensive. By forming the intermediate product 10A as shown in Figure 3 and pushing the protruding portion 30 into the main body portion 20, it is possible to manufacture the resin molded product 10 using an inexpensive molding die.

[0016] The main body 20 has a first surface portion 21 that is partially formed to have a recessed shape, and a second surface portion 22 that rises from the first surface portion 21.

[0017] The main body 20 may have a third surface extending from the upper end of the second surface 22 to face the first surface 21. That is, the shape of the main body 20 is not limited to a substantially L-shape, and any shape such as a substantially U-shape, a substantially J-shape, or a substantially T-shape may be adopted.

[0018] The first surface portion 21 is formed with an engaged portion 21a to which the protrusion 30 is engaged, and body side positioning portions 21b, 21b for positioning the protrusion 30 when the protrusion 30 is pushed in.

[0019] The locked portion 21a is formed so as to surround a substantially U-shaped portion that opens toward the center of the vehicle width.

[0020] The body side positioning portions 21b, 21b are slit-shaped portions formed to sandwich the locked portion 21a. Note that two body side positioning portions 21b, 21b are not necessarily required. Also, the shape of the body side positioning portions 21b, 21b may be a shape other than a slit, such as a round hole or a rectangular hole, as long as a part of the protrusion 30 penetrates through the body side positioning portions 21b, 21b.

[0021] 4, the locked portion 21a has a guide portion 21e formed obliquely with respect to the direction in which the protruding portion 30 is pressed from the lower surface 21c toward the upper surface 21d, so as to serve as a guide when the protruding portion 30 is locked.

[0022] Please refer to Figures 2 and 3. The protruding portion 30 is formed to be swingable about a swing axis S. The protruding portion 30 is engaged with the engaged portion 21a, and protrudes in the same direction as the second surface portion 22 is raised (upward in Figure 2).

[0023] The swing axis S extends substantially in the front-rear direction so as to pass through the boundary between the first surface portion 21 and the protruding portion 30. The boundary is formed to be thinner than the first surface portion 21 and the protruding portion 30, for example.

[0024] Furthermore, the direction in which the protruding portion 30 protrudes from the first surface portion 21 does not need to be completely the same as the direction in which the second surface portion 22 is raised. For example, if the protruding portion 30 and the second surface portion are raised upward from the first surface portion 21, it is difficult to manufacture the resin molded product 10 in a single injection molding process, and the protruding portion 30 and the second surface portion are raised in the same direction to such an extent that the resin molded product 10 can be easily manufactured through the intermediate product 10A. For this reason, even if the protruding portion 30 protrudes obliquely from the first surface portion 21, this may be included in the "same direction" as used here.

[0025] The protrusion 30 has a base 31 extending from the boundary with the first surface portion 21 (from the swing axis S), claw portions 40, 40 formed on the front and rear of the base 31 so as to sandwich the base 31 and engaged with the engaged portion 21a, a clip attachment portion 33 extending upwardly and to the center of the vehicle width from the base 31 and capable of attaching a clip, and protrusion side positioning portions 34, 34 extending forward and backward from the clip attachment portion 33 and penetrating through the main body side positioning portions 21b, 21b.

[0026] Please refer to Figures 4 and 5. The claw portion 40 is formed in a substantially V-shape. The claw portion 40 has a first wall portion 41 that stands up from the base portion 31, and a second wall portion 42 that extends from the tip of the first wall portion 41. The claw portion 40 extends obliquely with respect to the swing axis S. When the protruding portion 30 is viewed from above in a state in which it is engaged with the engaged portion 21a, an extension line of the claw portion 40 intersects with the swing axis S.

[0027] The end of the claw portion 40 closer to the swing axis S is referred to as one end 40a, and the end farther from the swing axis S is referred to as the other end 40b. The one end 40a of the claw portion 40 bends more easily than the other end 40b. In other words, the one end 40a of the claw portion 40 bends with a weaker load than the other end 40b. The claw portion 40 has a plurality of configurations for making the one end 40a bend more easily than the other end 40b. It is necessary for the resin molded product 10 to have at least one of the configurations for making the one end 40a bend more easily than the other end 40b.

[0028] Further, a first rib 43 is formed on the other end 40b side of the claw portion 40, connecting the first wall portion 41 to the second wall portion 42. The first rib 43 is formed to the bottom of the V. Two protrusions 44, 44 protruding toward the locked portion 21a are formed on the tip surface on the other end 40b side of the second wall portion 42.

[0029] In addition, the first rib 43 that connects the first wall portion 41 to the second wall portion 42 is not formed on the one end portion 40a side. This allows the one end portion 40a side to bend with a weaker load than the other end portion 40b.

[0030] Moreover, the protrusion 44 is not an essential element, and the tip surface of the second wall portion 42 on the other end 40b side may be directly abutted against the locked portion 21a. Moreover, the position, number, size, etc. of the protrusion 44 are arbitrary.

[0031] Please refer to Fig. 6. A second rib 45 is formed on the other end 40b, 40b of the claw portion 40, 40, extending from the first wall portion 41, 41 in a direction away from the second wall portion 42, 42. The second rib 45 is formed so as to connect the two first wall portions 41, 41. The second rib 45 is formed so that the portion connected to the first wall portions 41, 41 is high and the central portion connecting these portions is low.

[0032] The one end 40a side does not have the second rib 45. This allows the one end 40a side to bend with a weaker load than the other end 40b.

[0033] Furthermore, the second rib 45 does not need to have a central portion, and the shape and the like are arbitrary.

[0034] Refer to Fig. 7. The tip surface of the second wall portion 42 has a width W1 of one end portion 40a which is smaller than a width W2 of the other end portion 40b. In other words, the tip surface of the second wall portion 42 becomes wider from the one end portion 40a toward the other end portion 40b. Since the one end portion 40a is formed thinner than the other end portion 40b, the one end portion 40a bends under a weaker load than the other end portion 40b.

[0035] Further, a distance L1 from the first wall portion 41 to the tip surface of the second wall portion 42 at the other end 40b is longer than a distance L2 from the first wall portion 41 to the tip surface of the second wall portion 42 at one end 40a. Further, a distance L3 from the edge of the locked portion 21a to the tip portion of the outer surface of the second wall portion 42 at the other end 40b is longer than a distance L4 from the edge of the locked portion 21a to the tip portion of the outer surface of the second wall portion 42 at one end 40a.

[0036] As a result, the one end 40a side can be pushed into the main body 20 with a weaker force than the other end 40b side.

[0037] Please refer to Fig. 2. A generally oval hole is provided in the center of the clip attachment portion 33. By aligning this hole with a hole formed in the side sill and passing the clip through it, the resin molded product 10 can be fixed to the side sill.

[0038] The above-described resin molded product 10 will be summarized below.

[0039] 2 and 3. First, the resin molded product 10 has a main body 20 having a first surface 21 and a second surface 22 rising from the first surface 21, and a protruding portion 30 which is integrally formed with the first surface 21 so as to be swingable, is engaged with an engaged portion 21a formed on the first surface 21, and protrudes from the first surface 21.

[0040] Please refer to Figures 5 and 7. The portion of the protrusion 30 that is engaged with the locked portion 21a is configured by a deflectable claw portion 40 in which a first wall portion 41 and a second wall portion 42 are arranged in a substantially V-shape. The tip surface of the second wall portion 42 abuts against the surface of the locked portion 21a. The claw portion 40 extends in a direction intersecting the swing axis S of the protrusion 30, and one end portion 40a, which is the end portion closer to the swing axis S, is configured to deflect under a weaker load than the other end portion 40b, which is the end portion farther from the swing axis S.

[0041] Since the claw portion 40 can be easily bent at the one end 40a close to the swing axis S, the protrusion 30 can be pushed into the main body 20 with a small force at the beginning of pushing the protrusion 30. Since the force required at the beginning of pushing is small, the force required for pushing is small overall. On the other hand, when removing the protrusion 30 from the locked portion 21a, it is necessary to bend the other end 40b side farthest from the swing axis S. Since a large force is required to bend the other end 40b side, it is difficult to remove the protrusion 30 from the main body 20 after it is locked. In other words, it is possible to prevent the resin molded product 10 from being unintentionally removed after the resin molded product 10 is attached. It is possible to provide a resin molded product 10 that is easy to lock the protrusion 30 to the main body 20 and is difficult to be removed from the main body 20 after it is locked.

[0042] Secondly, in the first resin molded product 10, the first rib 43 that connects the first wall portion 41 to the second wall portion 42 is formed only on the other end portion 40b. This makes it possible to increase the force required to deflect the other end portion 40b and to increase the strength of the claw portion 40.

[0043] See Fig. 6. Thirdly, in the first or second resin molded product 10, the second rib 45 is formed only on the other end 40b, extending from the first wall portion 41 in a direction away from the second wall portion 42. This can increase the force required to deflect the other end 40b, and can also increase the strength of the claw portion 40.

[0044] See Fig. 7. Fourthly, in any one of the first to third resin molded products 10, the tip surface of the second wall portion 42 is wider from the one end portion 40a toward the other end portion 40b. This allows the one end portion 40a to bend under a weaker load than the other end portion 40b. By adjusting the width, the force required for bending can be adjusted more finely.

[0045] See Fig. 4. Fifthly, in any of the first to fourth resin molded products 10, the locked portion 21a has a guide portion 21e formed obliquely with respect to the direction in which the claw portion 40 is pressed from the lower surface 21c toward the upper surface 21d so as to serve as a guide when the claw portion 40 is locked. This makes it easier to lock the protruding portion 30.

[0046] See Fig. 7. Sixth, in any of the first to fifth resin molded products 10, the distance L1 from the first wall portion 41 to the tip surface of the second wall portion 42 at the other end portion 40b is longer than the distance L2 from the first wall portion 41 to the tip surface of the second wall portion 42 at the one end portion 40a. By increasing the distance from the first wall portion 41 to the second wall portion 42 at the other end portion 40b, it is possible to more reliably prevent the protrusion 30 from being unintentionally detached.

[0047] Seventh, in any of the first to sixth resin molded products 10, the distance L3 from the edge of the locked portion 21a at the other end 40b to the tip of the outer surface of the second wall portion 42 is longer than the distance L4 from the edge of the locked portion 21a at the one end 40a to the tip of the outer surface of the second wall portion 42. By ensuring a long distance from the edge of the locked portion 21a to the other end 40b, it is possible to more reliably prevent the protrusion 30 from being unintentionally detached.

[0048] Although the resin molded product according to the present invention has been described as an example of a long splash guard fixed to a side sill, it can also be applied to other parts. Furthermore, it is not limited to exterior parts of a vehicle, and can also be used for interior parts of a vehicle and for items other than vehicles, and is not limited to these types. In other words, the present invention is not limited to the embodiments as long as the functions and effects of the present invention are achieved. [Industrial Applicability]

[0049] The resin molded product of the present invention is suitable for use as a long resin part. [Explanation of symbols]

[0050] 10…Resin molded product 20…Main body 21...first surface part, 21a...locked part, 21c...bottom surface, 21d...top surface, 21e...guide part 22…Second surface part 30...Protrusion 40...Claw part, 40a...One end part, 40b...Other end part 41...First wall part 42…Second wall part 43…First rib 45…Second rib S…Swing axis

Claims

1. a main body having a first surface and a second surface rising from the first surface; a protruding portion that is integrally formed on the first surface portion so as to be swingable, is engaged with a locked portion formed on the first surface portion, and protrudes from the first surface portion; a portion of the protruding portion that is engaged with the engaged portion is configured by a first wall portion and a second wall portion that are arranged in a substantially V-shape and are configured by a deflectable claw portion; a tip surface of the second wall portion abuts against an upper surface of the engaged portion, The claw portion extends in a direction intersecting the swing axis of the protrusion, and one end portion that is closer to the swing axis is configured to bend with a weaker load than the other end portion that is farther from the swing axis, A resin molded product having a first rib formed only at the other end portion, the first rib connecting the first wall portion to the second wall portion.

2. The resin molded product according to claim 1 , further comprising a second rib formed only at the other end portion, the second rib extending from the first wall portion in a direction away from the second wall portion.

3. A main body having a first surface and a second surface raised from the first surface; a protruding portion that is integrally formed on the first surface portion so as to be swingable, is engaged with a locked portion formed on the first surface portion, and protrudes from the first surface portion; a portion of the protruding portion that is engaged with the engaged portion is configured by a first wall portion and a second wall portion that are arranged in a substantially V-shape and are configured by a deflectable claw portion; a tip surface of the second wall portion abuts against an upper surface of the engaged portion, The claw portion extends in a direction intersecting the swing axis of the protrusion, and one end portion that is closer to the swing axis is configured to bend with a weaker load than the other end portion that is farther from the swing axis, A resin molded product, wherein a tip surface of the second wall portion becomes wider from the one end toward the other end.

4. A main body having a first surface and a second surface raised from the first surface; a protruding portion that is integrally formed on the first surface portion so as to be swingable, is engaged with a locked portion formed on the first surface portion, and protrudes from the first surface portion; a portion of the protruding portion that is engaged with the engaged portion is configured by a first wall portion and a second wall portion that are arranged in a substantially V-shape and are configured by a deflectable claw portion; a tip surface of the second wall portion abuts against an upper surface of the engaged portion, The claw portion extends in a direction intersecting the swing axis of the protrusion, and one end portion that is closer to the swing axis is configured to bend with a weaker load than the other end portion that is farther from the swing axis, The engaged portion is a resin molded product having a guide portion formed at an angle with respect to the direction in which the claw portion is pushed from the lower surface, which is the surface behind the upper surface, toward the upper surface, to serve as a guide when engaging the claw portion.

5. A main body having a first surface and a second surface raised from the first surface; a protruding portion that is integrally formed on the first surface portion so as to be swingable, is engaged with a locked portion formed on the first surface portion, and protrudes from the first surface portion; a portion of the protruding portion that is engaged with the engaged portion is configured by a first wall portion and a second wall portion that are arranged in a substantially V-shape and are configured by a deflectable claw portion; a tip surface of the second wall portion abuts against an upper surface of the engaged portion, The claw portion extends in a direction intersecting the swing axis of the protrusion, and one end portion that is closer to the swing axis is configured to bend with a weaker load than the other end portion that is farther from the swing axis, A resin molded product, wherein a distance from the first wall portion to a tip surface of the second wall portion at the other end is longer than a distance from the first wall portion to a tip surface of the second wall portion at the one end.

6. A main body having a first surface and a second surface raised from the first surface; a protruding portion that is integrally formed on the first surface portion so as to be swingable, is engaged with a locked portion formed on the first surface portion, and protrudes from the first surface portion; a portion of the protruding portion that is engaged with the engaged portion is configured by a first wall portion and a second wall portion that are arranged in a substantially V-shape and are configured by a deflectable claw portion; a tip surface of the second wall portion abuts against an upper surface of the engaged portion, The claw portion extends in a direction intersecting the swing axis of the protrusion, and one end portion that is closer to the swing axis is configured to bend with a weaker load than the other end portion that is farther from the swing axis, A resin molded product, wherein the distance from the edge of the engaged portion at the other end to the outer surface tip of the second wall portion is longer than the distance from the edge of the engaged portion at the one end to the outer surface tip of the second wall portion.

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