JPS639465Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement in the front bumper arm support structure of an automobile.

As shown in FIGS. 1 to 4, a conventional front bumper arm support structure for an automobile is such that a front bumper arm 3 supporting a bumper reinforcement main 2 for a front bumper 1 is attached to a front end of a front side member 4. It is fastened and fixed to the upper surface with a pair of front and rear bolts 5A and 5B. In the figure, reference numeral 6 indicates a radiator support, and 7 indicates a front cross member.

In the conventional front bumper arm support structure as described above, the load applied to the front bumper 1 from the front is received only by the upper surface of the front side member 4 via the pair of bolts 5A and 5B. Therefore, the load that can be received by the front bumper 1 is not necessarily sufficient. Further, as shown in FIG. 3, in the conventional front bumper support structure, a through hole 8 for the front bumper arm 3 provided in the radiator support 6
This had the disadvantage of allowing hot air in the engine room to flow forward, which reduced the cooling efficiency of the radiator.

In order to solve these problems, it is conceivable to support the front bumper arm 3 while being inserted inside the front side member 4, but in this case, in order to ensure the height of the front bumper 1, , the front end of the front side member 4 must be bent upward, and the front cross member 7 must be bent upward to match the front side member 4.

However, if this is done, the difference in height between the horizontal portion of the front cross member 7 and the upper end of the bent portion becomes large, as indicated by the symbol A in FIG. 4, making it difficult to mold the front cross member 7.

This invention was made in view of the above-mentioned conventional problems, and allows the front bumper arm to be fixed inside the front side member without increasing the bending of the front cross member. An object of the present invention is to provide a front bumper arm support structure for an automobile that increases the deformation load of a front bumper and eliminates the need for a through hole in a radiator support.

This invention involves welding the upper surface of a front cross member to the lower surface of the front end of a front side member that is arranged in the longitudinal direction of the vehicle body, has a substantially hollow rectangular cross section, and has an open front end. A gusset plate that continuously and integrally covers and connects at least the inner corner portion in the width direction of the vehicle body and the front portion in the vicinity is welded to the front side member and the front cross member, and a front bumper arm is inserted into the inner upper surface of the front end of the front side member. By attaching it, the above objective is achieved.

Further, in the front bumper arm support structure of the automobile, a notch for inserting the front bumper arm is formed in a portion of the gusset plate that covers the front end opening of the front side member. This will achieve the above objectives.

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

In this embodiment, the same or corresponding parts as those of the conventional front bumper arm support structure shown in FIGS. 1 to 4 are given the same reference numerals, and the explanation thereof will be omitted.

In this embodiment, as shown in the figure, the upper surface of a front cross member 7 is welded to the lower surface of the front end of a front side member 4 which is arranged in the longitudinal direction of the vehicle body, has a substantially hollow rectangular cross section, and has an open front end. A gusset plate 9 that continuously and integrally covers and connects the inner corner in the width direction of the vehicle body near the welded part of the front side member 4 and the front cross member 7 and the front part is attached to the front side member 4.
and welded to the front cross member 7, and
A front bumper arm 3 is inserted and attached to the inner upper surface of the front end of the front side member 4.

That is, in this embodiment, the front cross member 7 is welded to the lower surface of the front end of the front side member 4, and extends to the same height as the front side member, like the conventional front cross member shown in FIG. Since the front cross member 7 is not bent, as shown in FIG.
The difference in height between the upper surface of the horizontal portion and the upper surface of the bent portion is almost the same as that of a conventional front cross member. Therefore, molding of the front cross member 7 is easy.

Furthermore, in the case of this embodiment, the front side members 4 and the front cross member 7 are not overlapped on their upper and lower surfaces, but by welding the gusset plate 9 to both, the joint rigidity can be supplemented and increased. is being done.

The gusset plate 9 is designated by the reference numeral 10 in FIG.
It is welded to the front side member 4, front cross member 7, and radiator support 6 at welding points indicated by . Further, a notch 9A for inserting the front bumper arm 3 is formed in a portion of the gusset plate 9 that covers the front end opening 4A of the front side member 4.

Further, the radiator support 6 is not provided with a through hole 8 because the front bumper arm 3 is fixed inside the front side member 4.

Therefore, in this embodiment, the front bumper arm 3 is supported inside the front side member 4 within the moldable range of the front cross member 7 and without reducing the joint rigidity between the front side member 4 and the front cross member 7. Moreover, by eliminating the through hole 8 of the radiator support 6, there is an advantage that the cooling efficiency of the radiator can be increased.

Note that in the above embodiment, the gusset plate 9
is designed to cover only the inner corner and front surface near the welding of the front side member 4 and front cross member 7, but this also extends to the upper surface of the front side member 4, as shown in FIG. It may be covered. In this case, the joint rigidity between the front side member 4 and the front cross member 7 is further increased.

Since the present invention is configured as described above, it is possible to support the front bumper arm inside the front side member, thereby increasing the deformation load of the front bumper, and allowing the front bumper arm to penetrate through the radiator support. By eliminating the holes, the cooling efficiency of the radiator can be increased, which is an excellent effect.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the white body and front bumper of an automobile to which the present invention is applied;
The figure is a schematic cross-sectional view showing a conventional front bumper arm support structure, FIG. 3 is a perspective view showing the main parts, and FIG.
The figure is a schematic sectional view taken along the line - in FIG. 3, FIG. 5 is a schematic sectional view similar to FIG. Perspective view showing main parts of the same embodiment, No. 7
The figure is a schematic sectional view similar to FIG. 4 showing another embodiment of the present invention. 1...Front bumper, 3...Front bumper arm, 4...Front side member, 4A...
Front end opening, 6...Radiator support, 7...Front cross member, 9...Gusset plate,
9A...Notch.

Claims (1)

[Claims for Utility Model Registration] (1) The upper surface of a front cross member is welded to the lower surface of the front end of a front side member which is arranged in the longitudinal direction of the vehicle body and has a substantially hollow rectangular cross section and an open front end; and a gusset plate that continuously and integrally covers and connects at least the inner corner portion in the width direction of the vehicle body and the front portion near the welding portion of the front cross member is welded to the front side member and the front cross member, and the gusset plate is welded to the front side member and the front cross member. A front bumper arm support structure for an automobile that has a front bumper arm inserted and mounted on the top surface. (2) Utility model registration claim 1, wherein a notch for inserting the front bumper arm is formed in a portion of the gusset plate that covers the front end opening of the front side member. Front bumper arm support structure of the vehicle described.