JPS599955Y2 - Bumper mounting structure - Google Patents

Description

[Detailed explanation of the idea] This invention relates to an automobile bumper mounting structure.

Generally, as shown in Figure 1, the rear bumper B is attached to a rigid part at the rear of the vehicle body to protect the vehicle body in the event of a rear-end collision. Fix the rear bumper mounting bracket 8 to the corner where the rear floor panel 2 and rear panel upper 7 of L are formed, and bolt the bolts 9 provided on the bumper stay 4 of the rear bumper B to the rear panel upper 7 and the bracket 8. It is made to pass through the drilled mounting hole 3 and can be tightened and fixed from inside the luggage room L with a l-10 nut.

In this type of bumper mounting structure, the mounting workability is good because the bumper B is installed from inside the luggage room L, but the mounting position is far from the rear side member 1 which forms the rigid part of the rear part of the vehicle body. As a result, the crushing force of the rear bumper B during a collision is reduced, and the rear panel upper 7, rear floor panel 2, etc. may be deformed even during a light collision.

Therefore, as another conventional rear bumper mounting structure, as shown in FIGS. 3 and 4, a bumper stay 4 extends through the rear panel lower 11 and into the rear side member 1 located on the lower surface of the rear floor panel 2. The rear side member 1 has a box-shaped section perpendicular to the rear floor panel 2, and is fixed directly to the rear side member 1 by nuts 10 and bolts 9 provided on the bumper stay 4. Tightening and fixing had to be done blindly under the rear floor panel 2, which caused problems in installation workability.

In view of the conventional bumper mounting structure, this invention provides a bumper mounting structure that improves installation workability by allowing the bumper to be mounted from the luggage compartment side, and also improves the crushing resistance of the bumper in the event of a collision. It is something to do.

Hereinafter, this invention will be described in detail based on embodiments shown in the accompanying drawings.

In the rear bumper mounting structure of this embodiment shown in FIGS. 5 and 6, the rear floor panel 2, which is joined to the rear side member 1 and forms a box-shaped portion in vertical section, is recessed toward the inside of the rear side member 1. A recessed bumper stay attachment part 5 is formed, a mounting hole 3 for attaching the rear bumper B is formed in the bumper stay attachment part 5, and a nut 10 and a bolt 9 are provided in the bumper stay 4 of the rear bumper B. By this, the bumper stay 4 inserted into the rear side member 1 through the rear panel lower 11 is tightened and fixed to the bumper stay attachment portion 5.

In this embodiment, the bumper stay attachment portion 5 is formed into a concave portion that is concave toward the inside of the rear side member 1, so that the bumper stay attachment portion 5 has four ridge lines 6 formed in the longitudinal direction of the vehicle body. This ridgeline 6
This improves the rigidity of the bumper mounting portion 5.

Therefore, according to this embodiment, when attaching the bumper B to the rear part of the vehicle body, the bumper stay 4 is inserted into the rear side member 1 by passing through the rear panel lower 11, and the bumper stay attachment part 5 provided on the rear floor panel 2 is inserted into the rear side member 1. A bolt 9 may be inserted through the mounting hole 3 of the bumper stay 4, and the bolt 9 may be screwed into a nut 10 provided on the bumper stay 4.

At this time, the nut 10 provided on the bumper stay 4 is positioned while looking at the bumper stay 4 from the luggage room L side through the attachment hole 3.

Therefore, according to the bumper stay mounting structure of this invention,
The bumper installation work can be done from the luggage compartment side, and since the bumper installation part is recessed in the floor panel, the bumper stay will not tilt too much inside the side member when installing the bumper, making the installation process extremely simple. Moreover, this bumper is attached to the floor panel, which is joined to the side members and forms a box-shaped vertical cross section, using bumper stays, so the crushing resistance in the event of a collision is improved, and the floor panel, etc. is prevented from deforming in the event of a light collision. You can prevent it from happening.

Moreover, the bumper stay attachment part 5 of the rear floor panel 2
Since the bumper stay 4 inserted into the rear side member 1 is shaped like a concave portion, the bumper stay 4 inserted into the rear side member 1 does not tilt and its vertical swing width is reduced. 4 and the mounting hole 3 of the bumper stay mounting part 5, which improves the installation workability.In addition, the bumper stay mounting part 5 is formed into a recessed part, so that the ridge line in the longitudinal direction of the vehicle 6, the rigidity of the bumper stay attachment portion 5 is improved, and the crushing resistance of the Noya bumper B can be further increased.

Furthermore, in the embodiment, the case where the luggage room is provided at the rear of the vehicle has been described, but it can also be applied to a rear engine type vehicle in which the luggage room is located at the front of the vehicle. The front floor panel can be read as the front panel, and the rear panel can be read as the front panel.

[Brief explanation of drawings]

Figure 1 is a perspective view of a rear bumper attached to the rear of the vehicle, and Figure 2 is a perspective view of a conventional rear bumper mounting structure.
3 is a sectional view similar to FIG. 2 showing another conventional rear bumper mounting structure, FIG. 4 is a sectional view taken along the line ■V-■V in FIG. The figure is a cross-sectional view similar to FIG. 2 showing a rear bumper mounting structure according to an embodiment of the invention, and FIG. 6 is a cross-sectional view taken along the line ■I-■I in FIG. 5. B...Rear bumper, 1...Rear side member 2
... Rear floor panel, 3... Mounting hole, 4... Bumper stay, 5... Bumper stay mounting part, 6...
・Ridge line.

Claims (1)

[Scope of utility model registration request] A bumper mounting portion having a recess or a ridgeline in the longitudinal direction of the vehicle body is recessed on the side member 1 side in the floor panel that is joined to the side member 1 and forms a box-shaped portion in vertical section, and the floor panel 2 is attached to the bumper mounting portion. This bumper mounting structure is characterized in that a bumper B mounting hole 3 is bored in the bumper B, and the bumper stay 4 of the bumper B inserted into the side member 1 is directly fixed to the floor panel 2.