JPH0597066A - Automotive front body structure - Google Patents

Abstract

PURPOSE:To improve rigidity by previously temporarily locking an undercover mounting stay, to which the front end of an under cover arranged on the under surface of the front part of an automotive body is locked, to a bumper and mutually fastening the under cover mounting stay against a hood stay in a process to assemble a bumper. CONSTITUTION:The automotive body structure of the front part is formed such that a front bumper 4 is mounted in a screwed-in state on a hood stay located to a front cross member 3 of an automotive body frame 1 and an under cover 8 is disposed on the under surface of the front part of an automotive body. When a stay 11 for an under cover to which the front part of the under cover 8 is locked is previously temporarily locked to the front bumper 4 and the front bumper 4 is mounted in a screwed-in state on the hood stay, the stay 11 for an under cover is mutually against the hood stay.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front vehicle body structure of an automobile, and more particularly to a front vehicle body structure of an automobile in which an undercover arranged on a lower surface of a vehicle body is attached to a hood stay via an undercover stay.

[0002]

2. Description of the Related Art In some automobiles, an undercover is provided on a lower surface of a front portion of a vehicle body in order to protect the lower surface of an engine room from obstacles during traveling.

11 and 12 show an undercover 10
FIG. 11 shows a fixing structure of the front end of No. 0. In FIG. 11, the stay 102 is fastened to the back surface of the bumper 101 with bolts 103, and the front end of the under cover 100 is fastened to the stay 102 with bolts 104. FIG. 12 shows the body frame 1
The stay 107 is welded to the cross member 106 that constitutes 05, and the undercover 100 is fixed to the stay 107 with bolts or the like.

[0004]

However, the reason why the undercover 100 is attached to the bumper 101 is that most of the current bumper 101 is made of resin.
There is a drawback that the under cover 100 is not fixed sufficiently. In particular, the bumper 101 may be pulled by the stay 107 and may be displaced or deformed. In the worst case,
The bumper 101 may break.

On the other hand, the stay 107 is attached to the cross member 106.
By installing, while moving the line in the car assembly process,
The stay 102 protruding to the lower surface may be caught or hit by something and may be deformed before the under cover 100 is attached. In particular, when the stay 102 is attached in the welding process, the above accident is likely to occur during the process from the coating process to the fitting process.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a front body structure of an automobile capable of surely attaching an under cover and preventing accidents in a working process. To do.

[0007]

In order to solve the above-mentioned problems, the present invention is an automobile in which a front bumper is screwed to a hood stay provided on a front cross member of a vehicle body frame and an undercover is provided on the lower surface of the front portion of the vehicle body. In the front vehicle body structure, the undercover stay for fastening the front part of the undercover to the front bumper is temporarily fastened in advance, and the undercover stay is attached to the hood stay when the front bumper is screwed to the hood stay. I have tightened it together.

[0008]

[Function] The undercover stay is temporarily fixed to the front bumper in advance. Then, when the front bumper is screwed to the hood stay, the undercover stay is fastened together with the hood stay.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. 1 to 6, the front portion of the vehicle body frame 1 is composed of a pair of apron side members 2 and 2 and a front cross member 3 that connects the tips of the apron side members 2 and 2 to each other. A bumper 4 is arranged in the front part of 3. A suspension subframe 5 (not shown) for supporting a suspension unit is disposed between the apron side members 2 and 2. The suspension subframe 5 supports a rack for a steering shaft and a casing for a pinion (not shown). The side bracket 6 and the pinion side bracket 7 are attached.

Reference numeral 8 denotes an under cover which is supported between the apron side members 2 and 2 and covers the lower surface of the vehicle body. The under cover 8 has a bottom surface 8a and a pair of side surfaces standing on both sides of the bottom surface 8a. 8b, 8b. A flange 9 is provided on the upper end of the side surface of the under cover 8 and is fixed to the lower surfaces of the apron side members 2 and 2 via a bolt 10 and a nut 10a.

The front end of the under cover 8 is fixed to the front cross member 3 by an under cover stay 11.
Are fastened to the rack side bracket 6 and the pinion side bracket 7 by bolts 1 through the bolts 12 and nuts 12a.
2 and the nut 12a.

The undercover stay 11 is temporarily fastened to the bumper 4 with screws 13 as shown in FIG. 7, and the undercover stay 11 fronts the bumper 4 as shown in FIGS. 8 to 10. Cross member 3
It is fastened together when it is fixed to the hood stay 14 through the bolt 15 and the nut 15a.

Next, the assembling order of the undercover will be described. An undercover stay 11 for fixing the front end of the undercover 8 is previously fastened to the bumper 4 with screws 13 (see FIG. 7). Next, when the bumper 4 is assembled to the vehicle body frame 1, the undercover stay 11 is attached to the hood stay 14 attached to the front cross member 3 by the bolt 1
5 and nut 15a together (see FIG. 8). Then, the front end of the undercover 8 is fixed to the undercover stay 11 with bolts 12 and nuts 12a.

[0013]

As described above, according to the front vehicle body structure of an automobile according to the present invention, the front bumper is screwed to the hood stay provided on the front cross member of the vehicle body frame and the undercover is attached to the lower surface of the front portion of the vehicle body. In the vehicle body structure of the front part of the vehicle, the undercover stay for fastening the front part of the undercover to the front bumper is temporarily fastened, and the undercover stay is screwed when the front bumper is screwed to the hood stay. Since it is fastened together with the hood stay, the front end of the under cover can be attached to the under cover attachment stay fixed to the hood stay of the cross member, so that the rigidity can be improved. Also, since the bumper installation process and the under cover installation process are similar in process, the under cover will be installed relatively soon after the bumper is assembled to the vehicle body, and the under cover installation stay will be caught by something during the process. Accidents such as deformation can be prevented.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing a vehicle body of an automobile.

FIG. 2 is a perspective view showing a front body structure of an automobile.

FIG. 3 is a perspective view showing a front body structure of an automobile of the present invention.

4 is a cross-sectional view taken along the line AA of FIG.

5 is a side view in the X direction of FIG.

FIG. 6 is a perspective view of an under cover.

FIG. 7 is a perspective view of a stay for an undercover attached to a bumper.

FIG. 8 is a perspective view showing a state in which the undercover stay and the bumper are fastened together with the hood stay.

FIG. 9 is a perspective view showing a state in which the front portion of the undercover is attached to the undercover stay.

10 is a cross-sectional view taken along the line AA of FIG.

FIG. 11 is a perspective view showing a conventional attachment structure of a front portion of an undercover.

FIG. 12 is a perspective view showing a conventional attachment structure of a front portion of an undercover.

[Explanation of symbols]

 1 Body Frame 2 Apron Side Member 3 Cross Member 4 Bumper 5 Suspension Subframe 6 Rack Side Bracket 7 Pinion Side Bracket 8 Undercover 8a Bottom 8b Side 11 Undercover Stay 14 Hood Stay

Claims (1)

[Claims] 1. In a front body structure of an automobile in which a front bumper is screwed to a hood stay provided on a front cross member of a vehicle body frame and an undercover is provided on a lower surface of a front portion of the vehicle body, the underbody is previously underlaid on the front bumper. A front body of an automobile, characterized in that an undercover stay for fastening the front part of the cover is temporarily fastened, and the undercover stay is fastened together with the hood stay when the front bumper is screwed onto the hood stay. Construction.