JPS61253246A - Bumper device for automobile - Google Patents

Abstract

PURPOSE:To prevent an armature from being deformed by bonding an armature stay with the inner surface of an armature inner portion. CONSTITUTION:An armature outer portion 2a in the outward side of a body is combined with an armature inner portion 2b in the inward side of the body to comprise an armature 2 of a closed configuration in cross section. And a bumper stay 7 is adapted to the inner shape of the armature outer portion 2a at its one end to form an armature bonding portion 7a where the stay greatly expands upward. Then, this armature bonding portion 7a is bonded to the armature outer portion 2a, and the major portion of the armature bonding portion 7a is taken into the armature 2 as a result.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a bumper device suitable for use in vehicles such as automobiles.

(Prior Art) Conventionally, as a member device for a vehicle, there is a shock absorbing member device shown in FIGS. 3 and 4, for example.

This device includes a skin 1 made of resin, an armature 2 connected to the vehicle body side of the skin 1 to support the skin 1, and an energy absorbing member 3 made of foamed resin interposed between the skin 1 and the armature 2. and a bumper stay 5 that connects the armature 2 to the vehicle body 4, and the armature 2 has a closed cross-sectional structure in which an armature outer 2a on the skin 1 side and an armature inner 2b on the vehicle body 4 side are combined, and The bumper stay 5 is the armature inner 2
b (for example, Utility Model Application No. 57-
13354).

Incidentally, in recent years, automobile bodies have been required to have more expanded trunk space as part of demands for expanding the product appeal and usefulness of automobiles, and for this reason, the floor panel 4a of the automobile body 4 has been lowered, and the rear panel has been lowered. 4b is extended further rearward.

On the other hand, the bumper device is required to be placed at a certain height for practical and legal reasons.

Therefore, in the above-mentioned conventional device, the height center of the armature 2 and the height center of the vehicle body attachment part 5a of the bumper stay 5 are largely offset, and the armature attachment part 5b of the bumper stay 5 is expanded upward, so that the armature inner 2b It is effectively supported up to the upper end (see, for example, Japanese Utility Model Application No. 55-161644).

(Problems to be Solved by the Invention) However, when attaching such a conventional device to the vehicle body 4, in order to prevent the extended portion of the armature attachment portion 5b of the Panpasty 5 from interfering with the vehicle body 4, the floor panel 4a and rear panel It is necessary to release the connecting portion 4c to the trunk 4b into the trunk room, and for this reason, the above-mentioned conventional device could not sufficiently contribute to expanding the trunk space.

In order to expand the trunk space, if the expanded portion of the armature mounting portion 5b is made small as shown in FIG. 5, it will not be possible to effectively support the upper part of the armature inner 2b. As shown by arrow C, when an external force is applied to the upper part of the bumper due to a collision, etc., the external force due to the collision is applied to the armature outer 2a.
The reaction force from the vehicle body 4 is mainly applied to the lower half of the armature inner 2b.
As shown by the broken line in Fig. 5, the armature 2 becomes easily deformed and the collision resistance performance decreases, so it is necessary to increase the thickness of the panpasty and the armature to strengthen the armature, which increases cost and weight. There was a problem in that it led to an increase in

(Means for Solving the Problems) The present invention has been made to solve the above-mentioned problems, and is characterized in that, in the bumper device, the panpasty is coupled to the inner surface of the armature outer.

(Function) According to the device of the present invention having such a configuration, even if the bumper stay is provided with an extended portion that can sufficiently effectively support the upper end of the armature outer, most of this extended portion cannot be accommodated within the armature. Therefore, interference between the vehicle body and the panpasty can be prevented.

Therefore, even if force is applied to the upper part of the armature outer due to a collision, etc., this force can be directly and sufficiently supported by the bumper stay, and deformation of the armature can be extremely effectively prevented. It is possible to eliminate the need for the joint part with the front or rear panel to escape to the inside of the vehicle body.

(Example) Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 shows an embodiment of the vehicle bumper device of the present invention, and in the figure, parts similar to those of the conventional device are designated by the same reference numerals.

The skin 1 is integrally molded from resin so that it has the external appearance of a bumper and has a substantially U-shaped longitudinal section.

A flange is provided at a position that is not visible from above the opening side end. The mah1 armature 2 is formed by forming a steel plate into a substantially U-shaped cross section and providing a flange around it.The armature outer 2a on the outside of the vehicle body and the armature inner 2b on the vehicle body side are joined to each other to form a closed cross section. Structure.

Then, as shown in FIG. 2, the flange of the skin 1 is joined to the flange of the armature 2 to fix the skin 1 to the armature 2, and the space between the skin 1 and the armature 2 is filled with skin due to a collision or the like. It is filled with an energy absorbing member 3 made of a foamed resin which transmits the impact force applied to the armature 2 to the armature 2 by reducing the impact force applied to the armature 2 by its own deformation.

The Pampastia uses a strength member with a U-shaped cross section with the opening side facing downward, and one end of the strength member is made to correspond to the inner shape of the armature outer 2a, and expands greatly upward and slightly expands downward. Then, the armature joint portion 7a is formed. And this armature coupling part 7
Flanges are provided at the upper, lower and side ends of armature outer 2a, respectively, and these flanges are connected to the upper wall of armature outer 2a,
Most of the armature joint part 7a is accommodated in the armature 2 by being joined to the inner surfaces of the lower wall and the side wall, respectively, and the part that cannot be accommodated and the unexpanded part of the pampastia are connected to the armature. It is made to protrude to the outside of the armature 2 through a hole 2d provided in the inner 2a and having a reinforcing portion formed by stepped molding in the peripheral portion. Furthermore, a reinforcing member 8 having a U-shaped cross section that fits into this portion is joined to the inner surface of the unexpanded portion of the pampas tear.

For example, when the member device of this embodiment configured as described above is installed at the rear of a vehicle body, the bumper steer is not expanded into the rear side member 9 joined to the lower surface of the floor panel 4a of the vehicle body 4. The parts shall be inserted and joined.

In the above-mentioned embodiment having such a structure, most of the extended portion 7a of the pampas steer, which can sufficiently effectively support the upper end of the armature outer 2a, is accommodated in the team air 2, and the vehicle body 4 and the pampas steer are connected to each other. Since this prevents interference between In addition, the floor panel 4 of the vehicle body 4
It is also possible to eliminate the need for the connecting portion between a and the rear panel 4b to escape into the trunk room.

Therefore, according to the above embodiment, even in a member device in which the bumper stay is installed with the bumper stay offset from the armature, the trunk space can be significantly expanded while ensuring sufficient collision resistance without increasing the weight, thereby improving the usefulness of the automobile. be able to demonstrate fully. It goes without saying that if the device of this embodiment is mounted on the front of the vehicle body, the engine room will be enlarged, which will be advantageous for mounting the radiator, air conditioner condenser, etc.

(Effects of the Invention) Thus, the device of the present invention can extremely effectively prevent deformation of the armature due to collisions, etc., without increasing weight, even in a member device in which the bumper stay is mounted with the bumper stay offset from the armature, and can also prevent the stay from deforming. Since the amount of protrusion toward the inside of the vehicle can be suppressed, when applied to the rear member, it is possible to eliminate the need for the joint between the floor panel and the rear panel of the vehicle body to escape to the inside of the vehicle body, thereby reducing trunk space without reducing collision resistance. can be significantly expanded.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the vehicle member device of the present invention, Fig. 2 is a sectional view taken along the line II-II, Fig. 3 is a perspective view of a conventional vehicle member device, and Fig. 4 is its sectional view taken along the line II-II. FIG. 5 is a sectional view taken along the line IV-IV, similar to FIG. 4 of another conventional member device for a vehicle. 1... Armature 2a... Armature outer 2b... Armature inner 4... Vehicle body 5, 6.7... Bumper stay patent applicant Nissan Motor Co., Ltd. representative patent attorney Hidetoshi Sugimura Patent attorney Sugi Illustration 1 and 2 by Ko Mura

Claims (1)

[Claims] 1. A bumper device comprising a box-shaped armature formed by combining an armature outer located toward the outside of the vehicle and an armature inner located toward the inside of the vehicle, and a bumper stay that connects the armature to the vehicle body, in which the bumper stay is connected to the armature. A vehicle bumper device characterized by being coupled to an outer inner surface.