JPS5871238A - Support structure of rear bumper - Google Patents

Abstract

PURPOSE:To allow a rear panel to firmly support a rear bumper by connecting and fixing both ends of a reinforcing support member for the rear bumper of an F.F car to the stiffened member of a car side section. CONSTITUTION:In case a car rear collision load is applied to a rear bumper B, said load is transmitted to a support member 11 through a reinforcing support member 10 and is transmitted to the junction between a rear wheel outer panel 13 and a rear wheel inner panel which is the stiffened section of a car body, thereby the deformation of the car body rear section can be effectively prevented, thus acting to prevent the survival space in a car room from being narrowed due to crush deformation. Furthermore, since the rear bumper B is supported by reinforcing support member 10 and the support member 11, the support stiffness of the rear bumper B can be sufficiently ensured even if individual members 10, 11 are made lightweight and small-sized.

Description

[Detailed description of the invention] The present invention relates to a support structure for a lyapampa.

Generally, a rear bumper disposed at the rear of a vehicle body is usually attached to and supported by a vehicle body strength member such as a rear side member at a certain legal ground clearance position via a bumper stay or the like.

By the way, in recent years, front-engine front-wheel drive vehicles (hereinafter referred to as F
-It's called F car. ), it is no longer necessary to install a rear wheel drive system at the rear of the vehicle, and the ground clearance of the rear of the vehicle, that is, the ground clearance of the rear floor, can now be lowered.

However, when supporting the rear bumper at the rear of the vehicle body of an F-F vehicle, the ground clearance of the rear floor becomes low, and the mounting ground clearance of the rear bumper is stipulated by law. There was a problem in that the panel had to be supported at a location higher than the floor. That is, since the rear panel is generally a thin panel that forms the outline of the vehicle body, there has been a problem in that the rear panel alone cannot provide sufficient strength to firmly support the rear bumper.

In order to solve this problem, as shown in FIG.
The rising part 2ak of the reinforcement 2ak stuck and broke.
Bottom part 21] Fix it to the rear floor B and attach it to the rear bumper B.
It is conceivable to ensure the full support strength of the

However, in the support structure of the rear bumper in the above-mentioned FltF vehicle, the rear bumper is
Since the collision load input to the vehicle is configured to be transmitted to the rear floor 6 via the reinforcement 2, the rear part of the vehicle body tends to be crushed and deformed, which is not desirable in terms of collision prevention.

This invention was devised in view of the current situation, and its purpose is to be able to firmly support the rear bumper on the rear panel, and to provide support to the vehicle body even when a collision load is applied to the rear bumper. The purpose of this invention is to provide a support structure for a caribamba that is effective in terms of collision prevention and that can minimize the collapse of the rear part and ensure all the living space in the vehicle interior.

In order to achieve all of these objectives, the present invention provides that the rear panel has a portion above the rear floor (i).
A reinforcing support member of the rear bumper is fixed at a position corresponding to the rear bumper on the back surface of the rear panel, and both ends of the reinforcing support member are connected and fixed to the strength members of the side portions of the vehicle body. ) It is a small thing.

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

The automobile shown in FIG. 2 is an F-F vehicle, and the rear floor 3 is set to have a lower ground clearance than, for example, the rear floor of a front engine, rear wheel dry vehicle. and,
A barrier bumper B is disposed at the rear of the vehicle body where the rear floor 6 is thus set.

This Rya Bamba B is the part above the rear floor 3,
It is press-formed from a single thin plate or fixed to the panel 1 through a placket (not shown). A reinforcing support member 10 made of Nagatsuki material with a substantially U-shaped vertical cross section is horizontally welded and fixed to the back surface of the rear panel B attachment area of the rear panel 1, and both ends of this Mli strong support member 10 are The section is further connected to the support member 11.

This support member 11 is vertical iM@ like the reinforcement support member 10.
It is formed of a long piece with a substantially U-shaped surface, and is welded and fixed to the rear fender inner panel 12. One end of the long piece is connected to the end of the reinforcing support member 10 in a bent manner, and the other end is connected to the end of the reinforcing support member 10. As shown in Figure 3, the rear wheel outer panel 13 and the rear wheel inner panel 14, which are the strength parts of the vehicle body,
It is connected by abutting against the joint. The reference numeral 15 in FIG. 2 indicates a spare tire storage chamber recessed in the rear floor 3.

Therefore, when the vehicle is supported as described above or a rear collision load is input to the rear bumper B, this load is transmitted from the reinforcing support member 10 to the support member 11 and is transmitted to the rear wheel outer panel 13 which is the strength part of the vehicle body. Since the collision load is transmitted through the joint of the handler wheel inner panel 14, deformation of the rear part of the vehicle body can be effectively prevented when the collision load is a light collision load, and even when the collision load is a heavy collision load. Not only is this effective in preventing the living space in the vehicle interior from being narrowed due to deformation of the rear part of the vehicle body, which is effective in terms of collision safety, but the rear bumper B is supported by the reinforcing support member 10 and the support member 11. Since the receiver is configured to hold, each member 10.
11'! rEven though it is lightweight and compact, it can still ensure sufficient support strength for the rear bumper B, and also improve the rigidity of the trunk room.
I can hit it.

In the above embodiment, the support member 11 has both ends of the reinforcing support member 100 connected to the joint portion of the rear wheel outer panel 16 and the rear wheel inner panel 14 at one end.
Although the explanation has been given by taking as an example the case where the support member 11 or the reinforcing support member 10 is connected to the other end, the present invention also includes the case where the end of the support member 11 or the reinforcing support member 10 is connected to another vehicle body strength part or part, such as a side member. It's okay.

Since the present invention has the above configuration, it is possible to ensure the support strength of the rear bumper, and also to ensure sufficient strength of the rear part of the vehicle body in the event of a rear collision of the vehicle, and is particularly suitable for F-F vehicles. can.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a partially cutaway cross-sectional view showing the support structure of a rear bumper in a conventional lj゛・Fuc, and Fig. 2 is a cross-sectional view showing an F-F according to an embodiment of the present invention. FIG. 3 is a partially cutaway sectional view showing the support structure Ytik of the rear bumper in a vehicle, and FIG. 3 is a perspective view showing the connected state of the support members in the vehicle body strength section. ■３９. Lyapamba 101. Rear panel 3... Rear floor 10... Reinforcement support member 11... Joint part between rear wheel outer panel and wheel inner panel (vehicle side part)! Hemorrhoid license applicant Nissan Motor Co., Ltd.

Claims (1)

[Claims] In a rear bumper support structure, the rear bumper is fixed at a portion of the rear panel above the rear bumper floor, and a reinforcing support member for the rear bumper is provided on the back side of the rear panel. 1. A support structure for a rear bar, characterized in that the reinforcing support member is fixed at a position corresponding to the rear bar, and both ends of the reinforcing support member are connected and fixed to a strength member of a side portion of a vehicle body.