JPH055095Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention mainly relates to the structure of a bumper attachment part of a vehicle such as an automobile.

[Conventional technology]

The structure of the bumper mounting part is shown in Figure 6. In the figure, a front cross member 2 is connected to the front end of the side member 1, and a collar 3 is connected to the side member 1 connection part of the front cross member 2.
is attached, and the bumper stay 4 is fixed to the front cross member 2 via the collar 3 with a through bottle 5 and a nut 6. In order to prevent the stay 4 from pushing the collar 3 and moving backwards when an external force is applied to the bumper during a collision, conventionally a patch 7 is used to reinforce the part of the front cross member 2 where the bumper stay 4 is fixed. The thickness of the parts was increased.

[Problem that the invention attempts to solve]

However, in the conventional configuration described above, since the external force exerted during a collision is still directly transmitted to the front cross member 2 in the normal direction, it is difficult to completely prevent the stay 4 from moving rearward.
If the deformation of the front cross member 2 is to be completely prevented, the patch 7 or the plate thickness of the front cross member 2 must be significantly increased, and the weight of the front cross member 2 will be greatly increased.

[Means for solving problems]

The present invention, as a means to solve the above-mentioned conventional problems, connects a front cross member 2 to the front end of a side member 1, attaches a collar 3 to the connecting portion of the side member 1 of the front cross member 2, and The structure is such that the bumper stay 4 facing the front end of the side member 1 is fixed by a through bolt 5 through the support member 7A, 7B which supports the back side of the collar 3 of the front cross member 2 to the side member 1. , 7C is provided.

[Effect]

External force at the time of a collision is transmitted from the through bolt 5 to the collar 3 of the front cross member 2 via the bumper stay 4 facing the front end of the side member 1. It doesn't move backwards because it's supported. The external force is applied to the support member 7 via the collar 3.
A, but the external force is applied to the side member 1 from the front end in the axial direction of the side member 1, and the side member 1 can resist the external force without any particular need for reinforcement.

[Effect of idea]

Therefore, in the present invention, it is possible to almost completely prevent rearward movement of the bumper stay during a collision without increasing the weight of the front cross member or side members.

〔Example〕

The present invention will be described with reference to an embodiment shown in FIGS. 1 to 3. Reference numeral 1 denotes a side member, in which a collar fitting groove 1A is formed at the bottom at the front end, and a support member 7A is formed at the top surface. are spanned over and both ends are welded to both side walls of the side member 1. Reference numeral 2 denotes a front cross member, and the front cross member 2 is connected to the front end of the side member 1, and a collar 3 is attached to the connecting portion of the front cross member 2 to the side member 1. The collar 3 is fitted into a fitting groove 1A at the bottom of the side member 1, and its back surface is supported by a support member 7A. The support member 7A has a block shape as shown in FIG. 2, and a fitting recess 71A into which the collar 3 is fitted is formed in the center of the front surface. 4 is a bumper stay, and there are bolt holes 4A, 4 on the upper and lower surfaces of the rear end.
The stay 4 has its rear end fitted into the front cross member 2 while facing the front end of the side member 1, and bolt holes 4A,
A through bolt 5 which is inserted into the collar 3 of the front cross member 2 is passed through 4A, and a nut 6 is screwed onto the through bolt 5 and tightened. In this way, the stay 4 is fixed to the front cross member 2.

In the above configuration, when an external force is applied in the direction shown by the arrow in FIG. 3 during a collision, the external force is transmitted to the collar 3 of the front cross member 2 via the through bolt 5. Since the external force is applied to the front cross member 2 in the normal direction, the front cross member 2 is easily deformed by the external force via the collar 3. As the front cross member 2 deforms, the bumper stay 4 moves rearward, but in this embodiment, the support member 7A of the side member 1 supports the back of the collar 3, so the front cross member 2, that is, the backward movement of the stay 4, is supported by the support member 7A. The external force is applied to the side member 1 via the support member 7A, but since the direction of the external force is the axial direction of the side member, the side member can easily resist the external force.

In addition to the embodiments described above, in the present invention, as shown in FIG. 4, an angled support member 7B with a fitting recess 71B formed on the upper surface, or a plate-shaped support member 7C with a fitting recess 71C bent in the center part. etc,
Support members of various shapes are applicable.

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment of the present invention, with Figure 1 being a partially cutaway exploded perspective view, Figure 2 being a perspective view of a support member, and Figure 3 being a side cross-section of a connecting part. figure,
FIG. 4 is a perspective view of a support member of another embodiment, FIG. 5 is a perspective view of a support member of still another embodiment, and FIG. 6 is an exploded perspective view of a conventional example. In the diagram, 1... Side member, 2... Front cross member, 3... Collar, 4... Bumper stay, 5... Through bolt, 7A, 7B, 7C...
...Supporting member.

Claims (1)

[Scope of utility model registration request] A structure in which a front cross member is connected to the front end of the side member, a collar is attached to the side member connection part of the front cross member, and a bumper stay facing the front end of the side member is fixed with a through bolt through the collar. A structure of a bumper mounting portion, further comprising a support member provided on the side member to support a rear surface of a collar of the front cross member.