JP2596179B2 - Front bumper mounting structure for automobiles - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile front bumper mounting structure.

2. Description of the Related Art FIG. 4 shows a conventional front bumper mounting structure. In FIG. 4, reference numeral 20 denotes a front side member joined to a closing plate 22 joined to a hood ledge panel 21 to form a closed cross section. Has an enlarged portion 23 whose closed section is enlarged downward, and a flange 24 is formed by bending both sides of the front end of the enlarged portion 23. 25 is a bracket for mounting a bumper which is formed in a closed cross section and is formed by bending a flange 26 on both side edges of the rear end.
The bolt 26 and the nut 27 are coupled to each other by abutting the flange 26 on the front edge 24 of the enlarged portion 23, and are arranged so as to protrude forward of the enlarged portion 24. Reference numeral 28 denotes a front bumper. A bumper fixing block 30 is fixed to a rear surface of the bumper armature 29. The bumper fixing block 30 is attached to the bracket 25.
The bolt 31 is inserted from below, and the nut 32 is fastened and fixed. This similar structure is disclosed in, for example, Japanese Utility Model Laid-Open No. 61-117709.

Problems to be Solved by the Invention Since a functional component such as a radiator grille is mounted on the upper front end of the front side member 20, the work space for mounting the front bumper from above cannot be secured, so that the bolt 31 can be tightened from below. In order to achieve this, a box-shaped bracket 25 is mounted in front of the enlarged portion 23 of the front side member 20. However, since the dedicated bracket 25 is used in this way, the number of man-hours for parts management and assembling increases and the cost increases. This is disadvantageous in terms of weight and weight. Therefore, the present invention does not require a dedicated bracket for assembling the front member to the front end of the front side member, and can easily assemble the device from below, and also allows the outside air from the front end of the front side member to the air-conditioning unit. An object of the present invention is to provide a front bumper mounting portion structure of an automobile which can be incorporated and can solve design restrictions around a cowl box.

Means for Solving the Problems In a substantially front half portion of the enlarged portion formed at the front portion of the front side member, a rain force which divides a closed cross section into two vertically is provided, and a stay of a front bumper is inserted into an upper stage of the enlarged portion. Fastening and fixing, and communicating the closed cross section space of the front side member with the outside air intake of the air conditioning unit, and forming a rectification guide for directing the introduced outside air into the member general portion at the rear end of the rainforce, An outside air introduction section is formed below the expansion section.

Operation The stay of the front bumper is supported by fastening the bolts and nuts to the rainforce and the upper wall of the enlarged portion at the upper stage of the enlarged portion. On the other hand, when the air conditioning unit is operating, outside air is taken in from the lower part of the enlarged portion at the front of the front side member, is guided into the general member by the rectification guide, and flows into the outside air intake of the air conditioning unit.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

In FIGS. 1 to 3, reference numeral 1 denotes a front side member joined to a closing plate 3 joined to a hood ledge panel 2 to form a closed cross section. It is. In a substantially front half portion of the enlarged portion 4, there is provided a rainfall 5 which is joined to both side walls and bisects the enlarged portion 4 vertically.

The front bumper 6 has its bumper armature 7
A stay 8 fixed to the rear surface of the head 4 is inserted into the upper portion of the enlarged portion 4 together with the socket member 9, and a bolt 10 is passed through the reinforcement 5 and the upper wall of the enlarged portion 4 to fasten a nut 11. In the present embodiment, notches 4a are formed in both side walls and a lower wall of the lower portion of the enlarged portion 4 so as to facilitate fastening work from below the bolt 10.
Is formed, but this may be formed only on the lower wall.
Further, the above-described socket member 9 may be omitted in some cases.

On the other hand, the closed cross-sectional space of the front side member 1 penetrates the dash panel 13 at its rear end and communicates with the outside air intake 15 of the air conditioning unit 14. In addition, enlargement section 4
The rear end of the rainfose 5 is curled slightly upward to form a straightening guide 5a for the introduced outside air, and the outside air is introduced into the lower stage of the enlarged portion 4 to deflect the airflow upward by the straightening guide 5a. The outside air introduction unit 12 that guides the air into the general members is formed.

According to the structure of the embodiment described above, the front bumper 6 can be directly connected to the enlarged portion 4 by inserting the stay 8 into the upper stage of the enlarged portion 4 and inserting and fastening the bolt 10 from below the reinforcement 5. Therefore, the box-shaped bracket conventionally used as a dedicated component can be omitted.

The lower part of the expansion section 4 is an outside air introduction section 12,
The taken-in outside air can be deflected and straightened along the straightening guide 5a, introduced into the general member section, and sent to the air conditioning unit 14. As a result, the cowl box 16 does not need to be provided with the outside air introduction port and its decorative grille, which are conventionally required, so that the design limitation of the cowl box 16 can be eliminated and, of course, the front window panel can be replaced with the cowl box 16. Can be arranged on the front side of the vehicle, and it is possible to expand the cabin space and meet the design requirements of the vehicle body. Furthermore, at the time of a frontal collision of the vehicle, the rain force 5 in the enlarged portion 4 also crashes, so that the collision energy absorbing characteristics can be improved.

Effect of the Invention As described above, according to the present invention, the front bumper has its bumper stay inserted into the upper part of the enlarged front side member separated by the rainforce, and the bolt is attached to the rainfose and the upper wall of the enlarged part. And a dedicated bracket can be dispensed with, thereby greatly contributing to cost reduction. In addition, at the time of a frontal collision of the vehicle, the rainforce also crashes, so that the collision energy absorbing characteristics can be improved. Further, an outside air introduction portion is formed at the lower stage of the enlarged portion, and the outside air can be smoothly guided to the rear of the member by the rectification guide, and can be supplied to the air conditioning unit. As a result, there is a great practical effect that the design around the cowl box is not restricted by the design around the cowl box as in the case where the outside air is introduced by the cowl box in the past, and the design requirements of the vehicle body can be met.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a perspective view of the essential part, FIG. 3 is an overall perspective view of the same, and FIG. 4 is a perspective view showing a conventional structure. . 1 ... front side member, 4 ... enlarged section, 5 ... rain force, 5a ... straightening guide, 6 ... front bumper, 8 ... stay, 12 ... outside air introduction section, 14 ... air conditioning unit, 15 ... ... the outside air intake.

Claims (1)

(57) [Claims] 1. A rain force which divides a closed cross section into two parts vertically is provided in a substantially front half of an enlarged portion formed at a front portion of a front side member, and a stay of a front bumper is inserted into an upper stage of the enlarged portion to be fastened. It is fixed and communicates the closed cross-sectional space of the front side member with the outside air intake of the air conditioning unit, and forms a rectifying guide at the rear end of the rainforce to direct introduced outside air into the general part of the member. A front bumper mounting part structure for an automobile, wherein an outside air introduction part is formed in a lower part of the part.