JPH08230587A - Vehicle bumper - Google Patents

Abstract

PURPOSE: To prevent damage to a car body due to jumping stones from tires without increasing the number of part items and costs. CONSTITUTION: A synthetic resin vehicle rear bumper 1 formed so that the tip 111 of a bumper side section 11 is placed along the wheel arch section 22 of a car body 2 is constructed by a hinge section 12 integrally formed in the tip 111 of the bumper side section 11 and an extension section 13 integrally formed in the hinge section 12, with its portion engaged with the car body and covering a gap between the car body wheel arch section 22 and the bumper side section.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention integrally forms an extension portion at a tip of a side portion of a bumper, the extension portion being partially locked to a vehicle body and covering a gap between a wheel arch portion of the vehicle body and the side portion of the bumper. The present invention relates to a vehicle bumper that prevents a vehicle body from being damaged by flying stones from a rear tire without increasing points and cost.

[0002]

2. Description of the Related Art A conventional vehicle bumper is a synthetic resin vehicle bumper side portion BS formed along a wheel arch portion A of a vehicle body as shown in FIG. In order to cover the gap G formed between the wheel arch portion A of the
Is brought into contact with the back surface of the vehicle bumper side portion BS via the cushion C, and is locked to the wheel arch portion A of the vehicle body by a clip K or other locking means.

[0003]

In the conventional vehicle bumper described above, the extension E, which is a separate member, is attached to the clip K.
Since it is locked to the wheel arch portion A of the vehicle body by other locking means, there is a problem that the number of parts is increased and as a result the cost is increased.

Therefore, the present inventor has focused on the technical idea of the present invention that the extension, which has been conventionally a separate member, is integrally formed as an extension portion at the tip of the bumper side portion, and after further research and development, the component The present invention has been achieved which achieves the object of preventing damage to the vehicle body due to flying stones from tires without increasing points and cost.

[0005]

A vehicle bumper of the present invention (the first invention according to claim 1) is a bumper main portion arranged at an end portion in the front-rear direction of a vehicle body and extending to the bumper main portion. And a bumper side portion disposed on the side portion of the vehicle body, wherein the tip of the bumper side portion is a synthetic resin vehicle bumper formed along the wheel arch portion of the vehicle body,
An extension portion, which is partially locked to the vehicle body and covers a gap between the vehicle body wheel arch portion and the bumper side portion, is integrally formed at the tip of the bumper side portion via a hinge portion.

The vehicle bumper of the present invention (the second invention according to claim 2) is the vehicle bumper according to the first invention, wherein the hinge portion is
It has a flexible structure.

[0007]

In the vehicle bumper of the first invention having the above-mentioned structure, a part is locked to the vehicle body at the tip of the side portion of the synthetic resin vehicle bumper formed along the wheel arch portion of the vehicle body. Since the extension part that covers the gap between the vehicle body wheel arch part and the bumper side part is integrally molded through the hinge, when installing the bumper, it is parallel to the bumper side part to prevent interference with the body and after assembling the bumper. The extension is bent around the hinge to be locked to the wheel arch portion of the vehicle body to prevent flying stones from the tire from jumping between the vehicle body and the vehicle bumper side portion and hitting the vehicle body.

In the vehicle bumper of the second invention having the above-mentioned structure, since the hinge portion has a structure capable of expanding and contracting, the extension smoothly follows the three-dimensional shape of the side wall of the vehicle body and the wheel arch portion. A portion is provided to cover a gap between the vehicle body wheel arch portion and the bumper side portion.

[0009]

In the vehicle bumper of the first aspect of the invention having the above-described operation, the extension portion is integrally formed at the tip of the vehicle bumper side portion via the hinge. Therefore, when the bumper is assembled, the extension portion is made parallel to the bumper side portion. It is possible to prevent interference with the body, and after mounting the bumper, by bending the extension around the hinge and engaging it with the vehicle body wheel arch part, the gap between the vehicle body wheel arch part and the bumper side part can be covered. It is possible to prevent flying stones from flying into the space between the vehicle body and the side portion of the vehicle bumper and hit the vehicle body, and to reduce the number of parts and cost.

In the vehicle bumper according to the second aspect of the present invention, which has the above-described operation, the hinge portion having a stretchable structure smoothly extends the extension portion along the three-dimensional shape of the side wall of the vehicle body and the wheel arch portion. By arranging and covering the gap between the car body wheel arch part and the bumper side part,
The effect of effectively preventing the stepping stones from the tires from hitting and damaging the vehicle body without increasing the cost is achieved.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) As shown in FIGS. 1 to 3, the vehicle bumper of the first embodiment is formed such that the tip 111 of the bumper side portion 11 is along the wheel arch portion 22 of the vehicle body 2. In a vehicle rear bumper 1 made of synthetic resin, a hinge portion 12 formed integrally with a tip 111 of the bumper side portion 11, and a hinge portion 12 formed integrally with the hinge portion 12 and partially locked to a vehicle body. The vehicle body wheel arch portion 22 and the extension portion 13 that covers the gap between the bumper side portions.

The vehicle rear bumper 1 is, as shown in FIGS. 1 to 3, a bumper main portion 10 disposed at a rear end portion 20 in the front-rear direction of the vehicle body, and a vehicle body side portion extending from the bumper main portion 10. 21 and a bumper side portion 11 arranged in parallel with each other, and a tip 111 of the bumper side portion 11 is formed along the rear wheel arch portion 22 of the vehicle body.

The bumper side portion 11 is, as shown in FIG. 1, a side wall 21 of the vehicle body and the rear wheel arch portion 22.
The extension portion 13 is disposed along the opening of the bumper side portion 11 through a thin portion forming the hinge portion 12 immediately after molding, as indicated by a broken line.
And a circular hole 131 for locking the rear wheel arch portion 22 of the vehicle body.

The hinge portion 12 has two surfaces that form a right angle.
One wall surface 121, 122 and the other surface are formed into a substantially arcuate wall surface 123, and the wall surface is constituted by a thin portion in which the wall thickness is locally reduced at the intersection of the two wall surfaces 121, 122, and a so-called integral hinge mechanism is formed. It is what constitutes.

When the vehicle rear bumper 1 is attached to the vehicle body, the extension portion 13 shown by the broken line swings counterclockwise about the hinge portion 12 in FIG. Arch part 22
And is engaged with the rear wheel arch portion 22 by the clip 14.

In the first embodiment, since the vehicle rear bumper 1 is made of polypropylene, the length of the flange portion facing the wheel arch portion of the vehicle body is limited due to the structure of the molding die, It is technically difficult to simply extend the portion corresponding to the extension portion 13 and mold it as shown by the solid line in FIG. 1, and mold it with a mold having the shape shown by the broken line in FIG. After the molding, the extension portion 13 is rocked and locked to the wheel arch portion 22 as described above.

The vehicle bumper of the first embodiment having the above-mentioned structure is attached to the vehicle body at the tip 111 of the side portion 11 of the vehicle bumper 1 made of a synthetic resin formed along the wheel arch portion 22 of the vehicle body. Since the extension portion 13 that is partially locked and covers the gap between the vehicle body wheel arch portion 22 and the bumper side portion 11 is integrally formed, the stepping stone S from the rear tire 24 and the vehicle body are formed as shown in FIG. This prevents the vehicle from jumping into the bumper side portion 11 for the vehicle and hitting the vehicle body.

In the vehicle bumper of the first embodiment, the extension portion is integrally formed at the tip of the bumper side portion in parallel with the bumper side portion through the integral hinge. Therefore, after the bumper is assembled, the hinge is bent around the shaft. The extension portion 1 along the wheel arch portion 22 of the vehicle body
3 is provided and locked to cover the gap between the vehicle body wheel arch portion 22 and the bumper side portion 11.

In the vehicle bumper of the first embodiment having the above-described operation, the stepping stones S from the rear tire 24 are formed on the vehicle body by the extension portion 13 formed integrally with the tip 111 of the vehicle bumper side portion 11. It is possible to prevent the vehicle body from hitting and damaging the vehicle bumper side portion 11 by hitting, and to reduce the number of parts and the cost.

In the vehicle bumper of the first embodiment, the extension portion is integrally molded in parallel with the bumper side portion via the integral hinge at the tip of the bumper side portion, so that the molding is easy and the extension interferes with the vehicle body. After mounting the bumper, the extension is bent along the axis of the hinge so as to be arranged along the vehicle body wheel arch portion and locked, and the vehicle body wheel arch portion 22 and the bumper side portion 11 are secured. Since the gap G is covered, there is an effect that flying stones from the tire are effectively prevented from hitting and damaging the vehicle body without increasing the cost.

(Second Embodiment) As shown in FIGS. 4 to 9, the vehicle bumper of the second embodiment has the bumper side portion 1 as shown in FIG.
1. The hinge portion integrally formed between the tip 111 of the vehicle body 1 and the extension portion 13 that is partially locked to the vehicle body 2 and covers the gap between the vehicle body wheel arch portion 22 and the bumper side portion 11. 15 is constituted by a thin-walled arcuate portion protruding downward in FIG.

When the vehicle rear bumper 1 is attached to the vehicle body, the extension portion 13 swings counterclockwise about the hinge portion 15 as shown by an arrow in FIG. 4, and is shown in FIG. As described above, the rear wheel arch portion 22 of the vehicle body 2 is brought into contact with the rear wheel arch portion 22 and the clip 14 locks the rear wheel arch portion 22.

As shown in FIG. 6, a line L _{2 at the} rear end of the extension is formed along a line L ₁ at the front end of the side of the bumper that is curved in the vehicle front-rear direction, and as shown in FIG. Since the curvature of the line L ₂ is larger than the curvature of the line L _{3 at} the tip of the bumper side portion curved in the vehicle width direction, when the extension is swung around the hinge portion, the extension rear end and the bumper side portion are closer to the upper ends. The tips are spaced apart, and the closer they are to the center, the less spaced. For this reason, as shown in FIG. 8, the hinge portion is formed so as to extend greatly toward both ends.

FIG. 9 shows that when the extension portion 13 of the vehicle rear bumper 1 is attached to the vehicle body 2, the hinge portion 15 is moved to the side wall portion 21 of the vehicle body 2.
Further, it shows a state (a straight line state) in which the bumper is extended most in the longitudinal direction in order to follow the three-dimensional shape of the rear wheel arch portion 22.

In the vehicle bumper of the second embodiment having the above-mentioned structure, since the hinge portion 15 has the thin-walled bow-shaped cross section which can be expanded and contracted, by extending in the longitudinal direction of the bumper 1, the vehicle body 2 of the vehicle body 2 can be extended. The extension portion 13 is arranged smoothly along the three-dimensional shape of the side wall 21 and the wheel arch portion 22 to cover the gap G between the vehicle body wheel arch portion 22 and the bumper side portion 11. .

In the vehicle bumper of the second embodiment having the above-described operation, the hinge portion 15 having the expandable and contractible thin-walled cross section extends in the longitudinal direction of the bumper 1 so that the side wall of the vehicle body 2 is provided. 21 and the wheel arch portion 22, the extension portion 13 can be arranged along the three-dimensional shape smoothly to completely cover the gap G between the vehicle body wheel arch portion 22 and the bumper side portion 11. An effect of preventing an excessive force from acting on each clip 14 is exerted.

Further, since the vehicle bumper of the second embodiment completely covers the gap G between the vehicle body wheel arch portion 22 and the bumper side portion 11, the stepping stones S from the tire 24 can be obtained without increasing the cost. This has the effect of more effectively preventing the vehicle body 2 from being hit and damaged.

In the vehicle bumper of the second embodiment having the above-mentioned operation, the hinge portion 15 having the expandable and contractible thin-walled cross section connects the tip end 111 of the bumper side portion 11 and the extension portion 13. Therefore, it is easy to deform, has high strength, and can withstand long-term use.

(Third Embodiment) As shown in FIG. 10, a vehicle bumper according to a third embodiment has a vehicle body wheel arch portion 22 in which a part of the tip end 111 of the bumper side portion 11 and the vehicle body 2 are locked. The hinge portion 16 integrally formed between the extension portion 13 and the extension portion 13 that covers the gap between the bumper side portion 11 and the bumper side portion 11 is configured by a thin V-shaped portion protruding upward in FIG.

In the vehicle bumper of the third embodiment having the above structure, since the hinge portion 16 has a thin V-shaped cross section which is expandable and contractible, the vehicle body 2 is extended by extending in the longitudinal direction of the bumper 1. The extension portion 13 is arranged smoothly along the three-dimensional shape of the side wall 21 and the wheel arch portion 22 to cover the gap G between the vehicle body wheel arch portion 22 and the bumper side portion 11. is there.

In the vehicle bumper of the third embodiment having the above-described operation, the hinge portion 16 having the thin and V-shaped cross section which can be expanded and contracted extends in the longitudinal direction of the bumper 1 so that the vehicle body 2 has the above-mentioned structure. The extension portion 13 is arranged smoothly along the three-dimensional shape of the side wall 21 and the wheel arch portion 22 to completely cover the gap G between the vehicle body wheel arch portion 22 and the bumper side portion 11. The effect of preventing an excessive force from acting on each clip 14 is exerted.

Further, since the vehicle bumper of the third embodiment completely covers the gap G between the vehicle body wheel arch portion 22 and the bumper side portion 11, the stepping stones S from the tire 24 can be obtained without increasing the cost. This has the effect of more effectively preventing the vehicle body 2 from being hit and damaged.

Further, in the vehicle bumper of the third embodiment, as is apparent from FIG. 10, the hinge portion 16 having the thin V-shaped cross-section protruding outward is used to connect the tip 111 of the bumper side portion 11 and the extension portion 13 to each other. Since the tires 24 are connected to each other, the mud splashed by the tire 24 is less likely to accumulate.

The embodiments described above are merely examples for the purpose of explanation, and the present invention is not limited to them. Those skilled in the art will recognize from the claims, the detailed description of the invention and the description of the drawings. Modifications and additions can be made without departing from the technical idea of the present invention.

In the above-described first embodiment, as an example, the hinge portion having a thin-walled arcuate section protruding downward as shown in FIG. 4 has been described. However, the present invention is not limited to this, and as shown in FIG. It is possible to employ a hinge portion 16 having a thin-walled arcuate section that protrudes upward.

In the above-mentioned embodiment, an example in which the hinge portion is constituted by one concave portion or one convex portion is described as an example from the viewpoint of simplification of the constitution, but the present invention is not limited to this, and It is also possible to adopt a mode that facilitates the deformation and the swinging of the extension part by the hinge part 17 in which a plurality of concavities and convexities are continuous as shown in FIG.

[Brief description of drawings]

FIG. 1 is a form in which a vehicle bumper of a sectional view showing a first embodiment of the present invention is attached to a vehicle.

FIG. 2 is a perspective view showing a vehicle bumper of the first embodiment.

FIG. 3 is a side view showing a rear side wall of a vehicle equipped with the vehicle bumper of the first embodiment.

FIG. 4 is a sectional view showing a form of a vehicle bumper in a free state according to a second embodiment of the present invention.

FIG. 5 is a sectional view showing a form in which a vehicle bumper of a second embodiment of the present invention is attached to a vehicle.

FIG. 6 is a side view showing a form of a bumper side portion in a free state of a vehicle bumper according to a second embodiment of the present invention.

FIG. 7 is a front view showing a form of a side portion of the bumper when the vehicle bumper of the second embodiment of the present invention is attached to the vehicle.

FIG. 8 is an enlarged perspective view showing a form of a hinge portion in a free state of a vehicle bumper according to a second embodiment of the present invention.

FIG. 9 is a perspective view showing a vehicle bumper of the second embodiment.

FIG. 10 is a sectional view showing a form of a vehicle bumper in a free state according to a third embodiment of the present invention.

FIG. 11 is a cross-sectional view showing a form of a vehicle bumper of a first modified example of the present invention in a free state.

FIG. 12 is a sectional view showing a form of a vehicle bumper of a second modified example of the present invention in a free state.

FIG. 13 is a sectional view showing a form in which a conventional vehicle bumper is attached to a vehicle.

[Explanation of symbols]

 1 Rear bumper for vehicle 2 Car body 11 Bumper side part 12 Hinge part 13 Extension part 22 Wheel arch part

Claims (2)

[Claims] 1. A bumper main portion arranged at an end portion in the front-rear direction of a vehicle body, and a bumper side portion extending on the bumper main portion and arranged on a vehicle body side portion, the tip of the bumper side portion being a vehicle body. In a vehicle bumper made of synthetic resin formed along the wheel arch portion of the above, an extension for covering a gap between the vehicle body wheel arch portion and the bumper side portion at a tip of the bumper side portion, a part of which is locked to the vehicle body. A bumper for a vehicle, wherein the parts are integrally molded via a hinge part. 2. The vehicle bumper according to claim 1, wherein the hinge portion has a stretchable structure.