JPH11301381A - Bumper attaching structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bumper attaching structure capable of improving bumper assembling workability, avoiding generation of inconvenience causing damage to the bumper and improving strength and rigidity of an attaching part of a fender. SOLUTION: In the bumper attaching structure, bolt fastening parts 11, 12 provided on a fender (for instant, a front fender 1) are bolted to a vehicle body 3 by an attaching bolt 4 to attach the fender 1 to the vehicle body 3, and a bumper (for instant, a front bumper 7) is attached to the vehicle body 3 in a state where a head part 4a of the attaching bolt 4 is covered with a bumper side surface part 7a bent and welded to the bumper end in the vehicle width direction. A recessed part 13 recessed toward the inside of the vehicle is provided on the bolt fastening parts 11, 12 of the fender 1, the bottom surface of the recessed part 13 is taken as a bolt fastening bearing surface 15, and the attachment of the bumper 7 to the vehicle body 3 is performed in a state where the head part 7a of the attaching bolt 4 is housed in the recessed part 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bumper mounting structure, and more particularly, to a mounting portion of a bolt fastening portion (attachment portion) of a fender to a vehicle body and a bumper side surface portion covering the bolt fastening portion. It is about structure.

[0002]

2. Description of the Related Art Conventionally, when mounting a bumper on a vehicle body, a fender is mounted on the vehicle body by bolting, and then a bumper side portion bent and formed at an end portion of the bumper in the vehicle width direction is bolted to the fender. The bumper is mounted on the vehicle body in a state corresponding to the (mounting portion).

Further, the specific mounting of the front bumper will be described as follows. First, as shown in FIG. 6 and FIG.
Is applied to the vehicle body 3 and the front fender 1 is bolted with the mounting bolts 4 and the nuts 5.
Attach to Note that the above-described bolt tightening portion 2 is a flat plate portion bent at the front end portion of the front fender 1 via the step 1a, and when the front fender 1 is attached to the vehicle body 3, as shown in FIG. A recess 6 having a width corresponding to the step 1a is formed, and a head 4a of the mounting bolt 4 and a washer 8 are arranged in the recess 6. And the car body 3
After the front fender 1 is attached to the vehicle, the front bumper 7 is moved from the front side of the vehicle body 3 to the vehicle rear side as shown by an arrow X in FIG. The bent edge 7b of the side surface portion 7a is arranged in the depression 6. As a result, the head 4a of the mounting bolt 4 and the bolt tightening portion 2 are covered with the bumper side surface 7a, and the front bumper 7 is mounted to the vehicle body 3 by bolting or the like under this state.

[0004] Thus, the front fender 1 is attached to the vehicle body 3 by bolting the bolt fastening portion 2 provided on the front fender 1 to the vehicle body 3 with the mounting bolts 4 and the nuts 5. The front bumper 7 is mounted on the vehicle body 3 with the bumper side surface 7a covering the head 4a of the mounting bolt 4 and the bolt fastening portion 2 of the front fender 1 (see FIGS. 6 to 8).

[0005]

However, in the conventional bumper mounting structure as described above, when the front bumper 7 is assembled (when moving from the front of the vehicle to the rear of the vehicle), the bent edge 7b of the front bumper 7 is bent. In many cases, the front bumper 7 may be caught on the head 4a of the mounting bolt 4 screwed in advance (see a two-dot chain line in FIG. 7). It will be difficult. Further, the leading end 7c of the bent edge 7b of the front bumper 7 may be damaged due to the hook between the bent edge 7b of the front bumper 7 and the head 4a of the mounting bolt 4.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to improve the workability of assembling a bumper and to cause damage to the bumper. An object of the present invention is to provide a bumper mounting structure capable of avoiding the occurrence of a problem and improving the strength and rigidity of a mounting portion of a fender.

[0007]

In order to achieve the above object, according to the present invention, the fender is attached to the vehicle body by bolting a bolt fastening portion provided on the fender to the vehicle body with a mounting bolt. A bumper mounting structure in which a bumper is mounted to a vehicle body under a state in which a head portion of the mounting bolt is covered by a bumper side surface portion bent and formed at a bumper end portion in a vehicle width direction; A concave portion is provided in the portion toward the inside of the vehicle, and the bottom surface of the concave portion is a bolt tightening seat surface, and the head of the mounting bolt is housed and arranged in the concave portion. Attach the bumper. Further, in the present invention, the depth of the concave portion of the bolt tightening portion is made substantially the same as the height of the head of the mounting bolt. In this specification, the “height of the mounting bolt head” is the height of the mounting bolt head itself when the mounting bolt is used as it is without using a washer. When a mounting bolt is used via the mounting bolt, it means a substantial height obtained by adding the height of the washer to the height of the head of the mounting bolt. Further, in the present invention, both the upper and lower portions of the concave portion of the bolt tightening portion are provided with inclined surfaces which are inclined outward in the vehicle width direction from the front end of the bolt tightening portion toward the vehicle rear side.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. In FIGS. 1 to 5, the same parts as those in FIGS. 6 to 8 are denoted by the same reference numerals, and redundant description will be omitted.

FIG. 1 shows a front part of a vehicle body of a four-wheeled vehicle provided with a bumper mounting structure according to an embodiment of the present invention.
In the present embodiment, a projecting piece 10 that is bent forward through a step 1a is provided at a position below the front end of the front fender 1, and this projecting piece 10 has a pair of projecting pieces that project forward. The bolt fastening portions 11 and 12 are integrally formed.

The above-mentioned pair of bolt tightening portions 11 and 12
As shown in FIG. 2 and FIG. 3, a concave portion 13 which is formed of a plate-like portion and which is depressed toward the inside of the vehicle is bent and formed at the upper and lower central portions. The bottom surface of the recess 13 is
0 is located on the inner side of the vehicle with respect to the basic surface of the vehicle, and this bottom surface is a flat bolt fastening seat surface 15 continuing to the front end 14 of the bolt fastening portions 11 and 12. And
The front end portion of the concave portion 13 is open, and the upper and lower portions of the concave portion 13 connected to the above-described front end 14 at the front and rear sides of the vehicle from the front ends of the bolt tightening portions 11 and 12 toward the vehicle rear side. Flat inclined surface 16 inclined outward in the width direction
a and 16b are provided. Note that this inclined surface 16
a, 16b and the corner 17a, 1 between the basic surface of the projection 10
7b is formed in a rounded shape.

Further, the concave portions 13 of the bolt tightening portions 11 and 12 are provided.
Is set to be substantially the same as the substantial height H of the head 4a of the mounting bolt 4 used for mounting the front fender 1 to the vehicle body 3. Here, the substantial height H of the head 4a of the mounting bolt 4 is
Bolt fastening seat 15 and the top surface 4 of the head 4a of the mounting bolt 4 in a state where the bolts are fastened and fixed to the bolt fastening seat surface 15.
b (see FIG. 3). Therefore, as shown in FIG. 3, in the case of the present embodiment in which the mounting bolt 4 is tightened and fixed via the washer 8, the height of the head 4a of the mounting bolt 4 is equal to the height of the washer 8 ( (Substrate thickness) is the substantial height.

Thus, the mounting of the front bumper 7 is performed as follows. First, the bolts 11, 12 of the front fender 1 are applied to the front side of the vehicle body 3, and the front fender 1 is previously fixed to the vehicle body 3 by being fixed to the vehicle body 3 with the mounting bolts 4 and the nuts 5. At the same time, the head 4a of the mounting bolt 4 is housed and arranged in the recess 13 of the bolt tightening portions 11, 12 of the front fender 1. Thereafter, the front bumper 7 is moved from the front side of the vehicle body 3 toward the rear side of the vehicle in the direction of arrow X (see FIGS. 1 and 3), and the side face 7a of the front bumper 7 is The front side of the mounting bolt 4 and the concave portion 13 of the front fender 1 are covered with the side surface 7a of the front bumper 7 so as to be assembled. Then, the front bumper 7 is bolted to the front of the vehicle body 3 with the outer surface α of the side surface portion 7a of the front bumper 7 arranged substantially flush with the outer surface β of the front fender 1 as shown in FIG. Fix with etc.

According to the bumper mounting structure having such a configuration, when the front bumper 7 is moved in the direction of arrow X in FIG. 3 to be mounted on the vehicle body 3, the head 4a of the mounting bolt 4 is fixed to the bolt of the front fender 1. Since the front end 7c of the bent edge 7b of the front bumper 7 (see FIG. 3) is attached to the mounting bolt 4 for mounting the front fender, it is housed in the recess 13 of the tightening portions 11 and 12. There is no risk of contact with the head 4a. That is, even when the front end 7c of the front bumper 7 is moved along a path that hits the head 4a, the front end 7c comes into contact with the inclined surfaces 16a, 16b of the front fender 1. Since the guide portion 7c is guided along these inclined surfaces 16a and 16b, the tip portion 7c is moved while avoiding the head portion 4a.

Further, as described above, the front end 7c of the front bumper 7 is provided with the inclined surfaces 16a, 16b of the front fender 1.
Even if it comes into contact with and slides along these, the inclined surfaces 16a and 16b are flat surfaces,
It is possible to avoid a problem that the device is damaged. In addition, as the front bumper 7 moves in the direction of the arrow X, the front bumper 7 is guided by the sliding contact between the inclined surfaces 16a, 16b and the tip 7c (the inclined surfaces 16a, 16b guide the front bumper 7). ), The front bumper 7 can be arranged at a regular mounting position.

Furthermore, since the bolt fastening portions 11 and 12 of the front fender 1 are provided with the recesses 13 for accommodating the bolt heads, the presence of the recesses 13 provides strength and strength near the mounting portion of the front fender 1. The rigidity can be improved. Further, since the side surface portion 7a of the front bumper 7 and the front fender 1 after being attached to the vehicle body 3 are substantially flush, the appearance of the parting portion between the bumper side surface portion 7a and the front fender 1 is good. Can be

Although one embodiment of the present invention has been described, the present invention is not limited to this embodiment, and various modifications and changes can be made based on the technical idea of the present invention. For example, the shape of the recess 13 provided in the front fender 1 can be appropriately changed as needed. Further, the present invention is not limited to the mounting structure of the front bumper 7, but is also applicable to the mounting structure of the rear bumper.

[0017]

According to the first aspect of the present invention, the bolt fastening portion of the fender is provided with a recess recessed inward of the vehicle, and the bottom surface of the recess serves as a bolt fastening seat surface. The head of the mounting bolt is housed inside and the bumper is mounted on the vehicle body, so when mounting the front bumper to the vehicle body, the end of the side of the bumper is attached to the front fender It can be avoided that the end of the mounting bolt is damaged due to contact with the head of the mounting bolt. Therefore, it is not necessary to perform a careful assembling operation that does not cause damage to the end of the side surface of the bumper, and it is possible to easily and efficiently mount the bumper.

According to the second aspect of the present invention, the depth of the concave portion of the bolt tightening portion is made substantially equal to the height of the head of the mounting bolt. The bending depth of the concave portion provided in the bolt tightening portion in order to prevent the end portion from being damaged can be minimized, and the forming operation of the concave portion can be easily performed.

According to a third aspect of the present invention, both the upper and lower portions of the concave portion of the bolt tightening portion are inclined outward in the vehicle width direction from the front end of the bolt tightening portion toward the vehicle rear side. Since the inclined surface is provided, the inclined surface serves as a guide for the bumper, and the guide function makes it possible to assemble the bumper with good assembling workability and reliably at a regular position. . Further, even if the end of the bumper side surface hits the inclined surface, since the inclined surface is a flat surface, it is possible to prevent a problem that the end of the bumper side surface is damaged.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a front part of a vehicle body of a four-wheeled vehicle provided with a bumper mounting structure according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an attached state of a front fender to a vehicle body, and is an enlarged view of a portion indicated by an arrow Y in FIG.

FIG. 3 is an enlarged sectional view taken along line AA in FIG. 2;

FIG. 4 is an enlarged sectional view taken along line BB in FIG. 2;

FIG. 5 is an enlarged sectional view taken along line CC in FIG. 2;

FIG. 6 is a perspective view showing a state in which a front fender is mounted on a vehicle body in the case of a conventional bumper mounting structure.

FIG. 7 is an enlarged sectional view taken along line DD in FIG. 6;

FIG. 8 is an enlarged sectional view taken along line EE in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front fender 3 Body 4 Mounting bolt 4a Head 7 Front bumper 7a Side surface (bumper side surface) 7b Bent edge 7c Tip 10 Protrusion piece 11, 12 Bolt tightening portion 13 Concave 15 Bolt tightening seat surface 16a , 16b Slope α, β Outer surface

Claims (3)

[Claims] The fender is attached to the vehicle body by bolting a bolt tightening portion provided on the fender to the vehicle body with a mounting bolt, and is attached to a bumper side portion bent and formed at a bumper end in a vehicle width direction. In a bumper mounting structure in which the bumper is mounted on the vehicle body while covering the head of the mounting bolt, a recess recessed inwardly of the vehicle is provided in the bolt fastening portion of the fender. Wherein the bottom surface of the bumper is a seat surface for bolt tightening, and the bumper is mounted on the vehicle body in a state in which the head of the mounting bolt is housed in the recess. 2. The bumper mounting structure according to claim 1, wherein a depth of the concave portion of the bolt tightening portion is substantially equal to a height of a head of the mounting bolt. 3. An upper and lower part of the concave portion of the bolt fastening portion is provided with an inclined surface which is inclined outward in a vehicle width direction from a front end of the bolt fastening portion toward a vehicle rear side. The bumper mounting structure according to claim 1.