JPS6332760Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a bumper mounting structure for an automobile, and particularly for an automobile in which an automobile body is assembled onto a chassis frame via a mounting rubber.
The present invention relates to an improvement in an automobile bumper mounting structure in which a bumper arm supporting the automobile bumper is bolted to a chassis frame.

In general, the bumper mounting structure of an automobile in which the automobile body is assembled onto the chassis frame via mounting rubber is to attach the bumper arm BA supporting the bumper B to a structure with greater rigidity, as shown in Fig. 2. It is fixed by bolting to the chassis frame F.

In this automobile, since the automobile body is assembled onto the chassis frame via a mounting rubber (not shown), due to product variations and assembly variations of these parts, the automobile body is attached to the chassis frame. In this case, it is unavoidable that the parts are assembled with variations in the vertical direction.
On the other hand, since the bumper is connected to the chassis frame via the bumper arm, even if the bumper is bolted to the chassis frame in the correct position, Due to variations in direction, the vertical position (relative position) between the bumper attached to the chassis frame and the car body may vary, and the bumper may not be installed in an accurate position with respect to the car body. This may occur.

Therefore, when assembling the bumper to the chassis frame with bolts, it is troublesome to proceed while checking the positional relationship with the car body, and this is a problem in the assembly of cars that requires quick assembling work. On the line, this assembly adjustment is done with precision.
Moreover, it was difficult to process the problem quickly.

For this reason, uneven gaps G are formed between parts P assembled on the rear surface of the automobile body, such as the lower edge of the lower back garnish or the lower edge of the rim of the rear combination lamp, and the upper surface of the rear bumper. , this gap G has caused the inconvenience of deteriorating the appearance of the automobile.

The present invention has been made to solve the above-mentioned conventional disadvantages, and is an automobile bumper mounting structure that improves the workability of bumper assembly and improves the accuracy of bumper assembly to the automobile body. The purpose is to provide

According to the present invention, in the above-mentioned automobile bumper mounting structure, a shelf-like portion is formed on the body surface hidden behind the bumper of the automobile, and a shelf-like portion is formed on the back surface of the bumper that extends toward the shelf-like portion. This is achieved by making the stay protrude and locking the stay to a shelf through a buffer provided at the protruding end of the stay so that the bumper can be positioned in the vertical direction with respect to the automobile body.

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

Fig. 3 is an enlarged sectional view of the portion corresponding to the - line in Fig. 1, showing an embodiment of the automobile bumper mounting structure according to the present invention, and Fig. 4 A and B are exploded views showing the stay and buffer in the same embodiment. They are a perspective view and an assembled perspective view.

In the figure, numerals 1 and 2 indicate a lower back panel and a rear floor cross member of an automobile body, which are assembled onto a chassis frame (not shown) via mounting rubber (not shown). The bumper B of the automobile is supported by a bumper arm (not shown) bolted to the chassis frame.

The lower back panel 1 and the rear floor cross member 2 are hidden behind the bumper B.
Each joint flange is bent and formed outward from the vehicle body, and the shelf portion 3 is formed by welding and joining the joint flanges.

The bumper B is composed of a bumper reinforcement 4 to which bumper arms are fixed at both ends, a urethane foam 5 and a bumper cover 6 attached to the bumper reinforcement 4. A stay 7 that extends downward from the vehicle toward the shelf portion 3 is formed to protrude from the back surface. A shock absorber 8 made of cushion rubber or the like is provided at the projecting end of the stay 7. The buffer body 8 is made of, for example, a cylindrical cushion rubber, and has a narrow part 8a with a reduced outer diameter formed on its outer peripheral wall, and this narrow part 8a is cut out at the protruding end of the stay 8. It is fixed by being fitted into a keyhole-shaped notch 7a.

To assemble the bumper B of this automobile, first, the urethane foam 5 and the bumper cover 6 are assembled to the bumper reinforcement 4 to which the bumper arm and the stay 7 are fixed, and a bumper assembly component is formed in advance.

In order to assemble this bumper assembly part to an automobile body in which the automobile body is assembled on the chassis frame via the mount rubber, the stay 7 is placed on the shelf 3 formed by the joining flange, and the stay 7 is placed on the buffer body 8. Bumper B by locking through
For example, lower back panel 1 of an automobile body.
etc., and then bolt the bumper arm to the chassis frame.

In addition, in the above embodiment, the stay 7 has its upper end fixed to the upper edge of the bumper reinforcement 4 and extends downwardly of the vehicle with the lower end of the stay facing the shelf 3; It may be a stay 7 in which the lower edge of the stay is fixed to the lower edge of the hosement 4 and the upper end of the stay is extended toward the shelf 3 toward the top of the vehicle. It is also possible to use a stay 7 that extends.

Further, the shelf portion 3 may be formed by a stepped portion that is recessed in the body surface and has an upper surface facing upward of the vehicle.

Reference numeral 9 in the figure indicates the skirt portion 6a of the bumper cover 6.
shows the rear frame cross member to which the is fixed.

According to this embodiment, the positioning work when assembling the bumper, especially the vertical positioning work with respect to the car body, is performed by attaching the stay 7 formed on the bumper side to the buffer body 8 on the shelf 3 formed on the car body side.
It is only necessary to lock it through the . That is, the stay 7 is locked to the shelf 3 on the car body side via the cushioning member 8 made of cushion rubber, thereby preventing product variations and assembly variations of each part such as the car body and chassis frame. can be absorbed by the shock absorber 8 fixed to the stay 7, and the bumper B can be positioned with the car body side as the mating member. For example, vertical positioning with respect to the lower back panel 1 etc. can always be performed appropriately.

Therefore, when assembling bumper B to the chassis frame by bolting, there is no need to adjust the assembly position of bumper B in the vertical direction, so check the positional relationship between bumper B and the automobile body. This eliminates the trouble of proceeding with the assembly work while making adjustments, and the assembly work of the bumper B becomes extremely simple, especially on the automobile assembly line.Moreover, it can be assembled quickly, and the bumper B can be easily assembled on the automobile body. The assembly accuracy in the vertical direction can be significantly improved.

Moreover, in this way, the vertical positioning of the bumper B and the automobile body can always be properly performed. In other words, the assembling accuracy of the bumper to the automobile body in the vertical direction is significantly improved, and there is less variation in the vertically assembling position of the bumper B to the automobile body. In addition, irregular gaps are no longer generated, and the appearance of the vehicle can be improved.

As described above, the present invention is configured such that the stay protruding from the rear surface of the bumper is locked to the shelf-like part on the car body side via the buffer, so that the variation can be absorbed by the buffer. Due to the locking action between the stay and the shelf-shaped part on the car body side through the bumper, the bumper and the car body can be properly positioned in the vertical direction, making it easier to assemble the bumper to the car body during bumper assembly work. No position adjustment is required, and the bumper assembly work is simplified and can be quickly assembled.

In addition, due to the shock absorber and the engagement of the stay with the car body through the shock absorber, the accuracy of vertically assembling the bumper to the car body can be improved significantly, and the bumper and body assembly parts can be easily connected to each other. can be assembled while always ensuring a constant gap, which has the effect of improving the appearance of the automobile.

[Brief explanation of drawings]

Figure 1 is a perspective view showing the rear part of the car body;
The figure shows the conventional bumper mounting structure of an automobile.
FIG. 3 is an enlarged sectional view of the portion corresponding to the line - in the figure; FIG. 3 is an enlarged sectional view of the portion corresponding to the line - in FIG. 1; FIG. It is an exploded perspective view and an assembled perspective view showing a stay and a buffer in the same example. F... Seat frame, B... Automobile bumper, 3... Shelf, 7... Stay, 8... Buffer.

Claims (1)

[Claims for Utility Model Registration] An automobile in which an automobile body is assembled onto a chassis frame via mounting rubber, and a bumper arm that supports a bumper of this automobile is bolted to the chassis frame. In the automobile bumper mounting structure, a shelf-like portion is formed on the body surface hidden behind the bumper of the automobile, a stay extending toward the shelf-like portion is protruded from the back surface of the bumper, and a buffer is provided at the protruding end of the stay. 1. A bumper mounting structure for an automobile, characterized in that the bumper is positioned in the vertical direction with respect to an automobile body by providing a shock absorbing body and locking a stay to a shelf-like portion via the shock absorbing body.