JPS6323251Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement in the bumper mounting structure of an automobile.

Conventionally, as shown in FIGS. 1 and 2,
The mounting structure of the bumper 2 of the automobile 1 is such that the bumper 2 is attached to the front end of the chassis frame 4 in the longitudinal direction via the bumper arm 3.
It is tightened and fixed with bolts 5.

the bumper arm 3 of the chassis frame 4;
A body 7 including a radiator support 7A is elastically attached to the upper surface near the attachment portion via a mount rubber 6.

Reference numbers 8 and 9 in the figure refer to the chassis frame 4 and the radiator support 7A together with the mount rubber 6.
bolts and nuts for tightening and fixing
10 is a headlamp fixed to the body 7 side; 1
1 is a lamp door, 12 is an absorber made of urethane, etc., 13 is a bumper reinforcement,
14 indicates a urethane cover.

In such a conventional mounting structure of the bumper 2 in the automobile 1, the bumper 2 is attached to the strong chassis frame 4.
The body 7 is integrally fixed to the chassis frame 4 via the bumper arm 3, while the body 7 is elastically fixed to the chassis frame 4 via the mount rubber 6. In addition to variations in condition, the relative positional relationship between the chassis frame 4 and the body 7 varies from vehicle to vehicle even if the vehicle is of the same model.

Therefore, while the positional relationship between the bumper arm 3 and the chassis frame 4 is constant, the positional relationship between the bumper 2 and the body 7 and body-side attachment parts such as the headlamp 10 or the lamp door 11 is not uniquely determined. Therefore, adjustment work between the two is required in the assembly work process, but it is extremely difficult to do this in the assembly line work on the production line, causing a decrease in work efficiency.

This idea was made in view of the above-mentioned conventional problems, and it is possible to maintain a constant positional relationship between the bumper arm and the body side without requiring difficult adjustment work during the assembly process. The purpose of the present invention is to provide a bumper mounting structure for an automobile.

This invention provides a bumper mounting structure for an automobile in which a bumper that is attached to a chassis frame via a bumper arm is disposed close to a body side that is attached to the chassis frame via a mounting rubber. a stay that protrudes toward the body side and is attached to the stay; a flange that protrudes from the body side so as to overlap with the stay with a gap below; A cushion member is provided between the stay and the flange and is pressed into contact with the stay and the flange when the bumper arm is attached to the frame, and the fixing position of the bumper arm to the chassis frame is centered around the stay placed on the flange. As a result, the above object can be achieved by making the adjustment possible within a certain range.

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

In this embodiment, the same or corresponding parts as those of the conventional automobile bumper mounting structure shown in FIGS. 1 and 2 will be designated by the same reference numerals, and a description thereof will be omitted.

This embodiment is an automobile in which a bumper 2 attached to a chassis frame 4 via a bumper arm 3 is arranged close to a body 7 side attached to the chassis frame 4 via a mount rubber 6. In the bumper mounting structure, a stay 15 is attached to the bumper arm 3 and protrudes toward the body 7; a flange 16 protrudes from the body 7 so as to overlap the stay 15 with a gap below; The stay 15 is attached to the stay 15 or the flange 16 when the bumper arm 3 is attached to the chassis frame 4.
and a cushion member 17 that is pressed into contact with both flanges 16, and the position where the bumper arm 3 is fixed to the chassis frame 4 is centered around the stay 15 placed on the flange 16. , which can be adjusted within a certain range.

That is, the inner diameter of the bolt hole 18 formed in the bumper arm 3 for inserting the bolt 5 is made considerably larger than the outer diameter of the bolt 5, so that the bumper arm can be inserted within the range of the difference between the inner diameter and the outer diameter of the bolt 5. The mounting position of the bumper arm 3 on the chassis frame 4 can be adjusted, and the stay 15 is used as the moving fulcrum of the bumper arm 3 during this adjustment, so that the positional relationship between the bumper arm 3 and the body 7 side is kept constant. It is something. Here, the cushion member 17 serves to prevent the stay 15 from slipping against the flange 16.

Therefore, in this embodiment, the bumper arm 3 can be fixed to the chassis frame 4 after the relative positional relationship between the bumper 2, the bumper arm 3, and the body 7 has been determined. Further, there is no need to adjust the positional relationship between the bumper arm 3 and the body 7, and the efficiency of the assembly work can be greatly improved.

Further, since the relative positional relationship between the bumper 2 and the body 7 side is constant, the appearance of the vehicle can be improved. In the assembled state, the body 7 is connected to the chassis frame 4 via the mount rubber 6 and is displaced relative to the chassis frame 4, but this displacement is also absorbed by the cushion member 17.

In the above embodiment, the cushion member 17 made of rubber is provided on the stay 15 attached to the bumper arm 3 side.
5 and the flange 16 to elastically support the bumper arm 3 on the body 7 side. Therefore, the cushion member 17 may be attached on the flange 16 on the body 7 side.

Since the present invention is configured as described above, when installing the bumper to the chassis frame, the bumper arm is placed on the body side, and the bumper arm is fixed with the relative positional relationship between the bumper and the bumper arm and the body side determined. Since the bumper arm can be tightened and fixed to the chassis frame with the position adjustable within a certain range, there is no need to adjust the positional relationship between the bumper and the body after attaching the bumper arm to the chassis frame, which greatly improves the efficiency of assembly work. It has the excellent effect of improving the

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the front part of a conventional automobile, Fig. 2 is an enlarged sectional view taken along the - line in Fig. 1, and Fig. 3 is an enlarged sectional view taken along the - line of Fig. 1.
This figure is a sectional view similar to FIG. 2 showing an embodiment of the automobile bumper mounting structure according to the present invention, and FIG. 4 is a sectional view taken along the - line in FIG. 3. 1... Car, 2... Bumper, 3... Bumper arm, 4... Chassis frame, 5... Bolt, 6
... Mount rubber, 7 ... Body, 7A ... Radiator support, 15 ... Stay, 16 ... Flange, 17 ... Cushion member, 18 ... Bolt hole.

Claims (1)

[Scope of utility model registration request] A bumper mounting structure for an automobile in which a bumper attached to a chassis frame via a bumper arm is disposed close to a body side attached to the chassis frame via a mount rubber. a stay that protrudes toward the body; a flange that protrudes from the body so as to overlap with the stay with a gap below; and a flange that is attached to the stay or flange, and that attaches the bumper arm to the chassis frame. A cushion member is provided between the stay and the flange, and the cushion member is pressed into contact with both the stay and the flange, and the fixing position of the bumper arm to the chassis frame is set within a certain range around the stay placed on the flange. An automobile bumper mounting structure characterized by being adjustable.