JPH0416777Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to the body structure of an automobile, particularly the front body structure of the automobile.

(Prior Art) The body of an automobile must not only support the various devices attached to the body, but also have sufficient rigidity to avoid being easily deformed by external forces applied during driving. . It is desired to ensure this rigidity without significantly increasing the weight of the vehicle, and for this reason various improvements have been made to the vehicle body structure.

Furthermore, ensuring the rigidity of the vehicle body is also required from the viewpoint of ensuring safety in the event of a collision and preventing damage to the vehicle. In other words, it is desirable to ensure the rigidity of the vehicle body to minimize deformation of the vehicle body during a collision, and to prevent injuries to passengers and damage to other devices due to this deformation.

For this reason, for example,
No. 132454 describes a bumper mounting structure in which a bumper is attached to the vehicle body frame via a stay, and in this case, the bumper and the stay are attached vertically offset, in which a steel plate beam is fixed to the stay, A structure in which the lower part of the beam protrudes more forward than the upper part has been proposed. By adopting such a structure, the force applied to the bumper in the event of a collision from the front side is prevented from being offset to a large extent with respect to the stay, thereby suppressing deformation of the stay.

However, generally, the bumper mounting bracket (stay) is attached to the side surface of the front end of the front frame, thereby preventing vertical offset between the bumper and the front frame. At that time, since many auxiliary devices such as radiators and condensers are installed inside the front frame in the vehicle width direction, if the bumper mounting bracket is fixed to the inside part of the front frame in the vehicle width direction, This makes it difficult to secure service space for bumper installation. Therefore, the bumper mounting bracket is generally fixed to the outer portion of the front frame in the vehicle width direction.

(Purpose of the invention) In view of the above, an object of the present invention is to provide a relatively simple and highly rigid vehicle body structure at the bumper attachment portion at the front of the vehicle body.

(Structure of the invention) The front body structure of an automobile according to the invention includes: a pair of front frames extending back and forth on the left and right sides of the vehicle; a bumper mounting bracket; a front shroud panel that is located on the outside in the vehicle width direction with respect to the front frame and forms a front wall of the front end of the vehicle; and a reinforcement that connects the front shroud panel and the bumper mounting bracket. It is characterized by comprising the following.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing the front part of a car body having the car body structure of the present invention, in which the left and right side walls 1, 1,
An engine room section A is surrounded by the dash panel 5 and the front shroud panels 22, 22. Note that a vehicle interior portion B is formed on the rear side of the vehicle body of the dash panel 5. Suspension towers 2, 2 and tire houses 3, 3 for front wheels are formed on the left and right side walls 1, 1, respectively, and a pair of front frames 4, 4 extend along the lower ends of the side walls in the front and rear of the vehicle body. It is formed. In addition, an upper shroud member 8 is arranged to connect the upper front ends of the left and right side walls.
The upper ends of a pair of radiator shroud side panels 5, 5, which are attached to the front ends 4a, 4a of the front frames 4, 4 and extend upward, are connected to the upper shroud member 8. Front shroud panels 22, 22 whose upper ends are joined to the upper shroud member 8 are attached to the outer sides of the radiator shroud side panels 5, 5, respectively. This front shroud panel 22,2
2, its lower end is reinforcement 21,2
1 and the front end portion 4a of the front frame via bumper mounting brackets 10,10. Furthermore, the front end 4 of the front frames 4, 4
Junction plates 7, 7 joined to both ends of a cross member 6 extending in the left-right direction of the vehicle body are attached to the lower ends of the radiator shroud side panels 5, 5 attached to a, 4a, respectively. . A radiator is attached to the radiator shroud side panels 5, 5, and attachment portions are formed in the junction plates 7, 7 at both ends of the cross member 6, and a cooler condenser is attached to the attachment portions.

FIG. 2 shows an enlarged view of the connection between the bumper mounting bracket 10 fixed to the front end of the front frame 4 and the front shroud panel 22 via the reinforcement 21. The structure of the part will be explained in detail. The structure of this part is symmetrical, so only the left side of the vehicle body is shown in FIG.

A lower end of a radiator shroud side panel 5 is joined to the inner side surface of the front end portion 4a of the front frame 4 inside the vehicle body. On the other hand, a bumper mounting bracket 10 is fixed to the outer side surface of the vehicle body at the front end portion 4a by bolts 11, 11. FIG. 3 shows a state in which the bumper mounting bracket 10 is fixed to the front end 4a of the front frame 4, with only the bumper mounting bracket 10 and the front frame 4 taken out. The mounting bracket 10 is made of a box-shaped main body 15 with an L-shaped gusset 12 extending vertically and fixed with bolts 14, 14.
It is fixed to the front frame with bolts 11,11. Further, two holes 15a, 15a for bumper attachment are formed on the front surface of the box-shaped main body 15, and the bumper can be attached to the vehicle body through these holes 15a, 15a. Furthermore, two holes 12a, 12a are formed in the gusset 12, and the inner end 21b of the reinforcement 21 is attached to the bumper by bolts 13, 13 through these holes 12a, 12a, as shown in FIG. It is connected to a bracket 10. The reinforcement 21 has an upper end 21a connected to a lower end 22a of the front shroud panel 22 by spot welding.

With the above structure, the rigidity around the front shroud panel 22 and the bumper mounting bracket 21 can be increased with a relatively simple structure.

(Effects of the invention) As explained above, according to the invention, since the bumper mounting bracket attached to the front frame and the front shroud panel are connected via the reinforcement, the rigidity of this part is reduced. It is high and can suppress deformation of this part in the event of a front-side collision.

That is, according to the present invention, it is possible not only to increase the bumper support rigidity of the bumper mounting bracket, but also to improve the rigidity of the front shroud panel by using the bumper mounting bracket without installing any new members. be able to.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the front vehicle body structure according to the present invention, Fig. 2 is an enlarged perspective view showing the vicinity of the bumper mounting bracket, which is the main point of the invention, and Fig. 3 is the perspective view shown in Fig. 2. FIG. 3 is a perspective view showing only the front frame and bumper mounting bracket taken out from the structure of FIG. 1...Side wall, 2...Suspension tower, 3
...Tire house, 4...Front frame, 5
... Dash panel, 5 ... Radiator shroud side panel, 6 ... Cross member, 7 ... Junction plate, 8 ... Upper shroud member, 10 ... Bumper mounting bracket, 12
...gasset, 21...reinforcement,
22...Front shroud panel.

Claims (1)

[Scope of Claim for Utility Model Registration] A pair of front frames arranged to extend back and forth on the left and right sides of the vehicle body, a bumper mounting bracket fixed to the outer side of the front end of the front frame in the vehicle width direction, and to the front frame. A front shroud panel located on the outside in the vehicle width direction and forming a front wall of the front end of the vehicle body, and a reinforcement that connects the front shroud panel and the bumper mounting bracket. Front body structure of a car.