JPS58105883A - Collision energy absorbing construction for vehicle body - Google Patents

Abstract

PURPOSE:To prevent the engine and a power train from being thrusted into the interior of the vehicle at the time of a collision, by a method wherein the amount of the vehicle deformation is restricted by providing stopping members at the parts faced to the outside peripheral surfaces of tires of wheels. CONSTITUTION:A radiator core support 9 is provided at a front end part of a front side member 1, and to left and right end parts of the support 9 which are faced to the outside peripheral surfaces of the tires of the wheels 5, the stopping members 11 consisting of an elastic body such as a rubber are fixed through brackets 10. Therefore, when the vehicle comes into a head-on collision, the support 9 is moved rearwards, and before the collapsing movement of the vehicle reaches the final stage of collision, the stopping members 11 function so that the collision energy is absorbed into load wheels 5b through tire parts 5a of the wheels 5. Accordingly, the engine E and the power train P can be prevented from being thrusted into the interior of the vehicle.

Description

[Detailed description of the invention] The present invention relates to a collision energy absorbing structure for a vehicle body.

Conventionally, this type of structure has been used to prevent the crushing deformation of the vehicle body due to the vehicle frontal collision load, and to prevent deformation of the interior of the vehicle, as shown in Figure 1. As strength members for preventing this, front side members 1 are disposed separately on the left and right sides of the lower part of the vehicle body, and hood range reinforcements 2 are disposed separately on the left and right sides of the upper part of the vehicle body.

However, in such a conventional collision energy absorption structure for a vehicle body, when a vehicle frontal collision load acts on the vehicle body, the front portion of the vehicle body plastically deforms as shown in FIG. , retreats to the rear side, and as the front of the vehicle moves back, the engine ■ and power train P) located in the engine room move backwards and move into the passenger compartment. The problem is that the interior of the vehicle is deformed, which is not desirable for safety! do.

As a means to solve such problems, the front side member 1 and the cross members 4 connected to the front and rear ends of the front side member 1 are reinforced or formed to be thicker to reduce the amount of deformation of the vehicle body. However, since such a solution would result in too large a collision acceleration acting on the occupants, it is necessary to prevent the engine port and the old power train from colliding, and to reduce the impact on the collision acceleration on the occupants. The problem was that it was extremely difficult to figure out how to adjust the

Incidentally, on the left and right sides of the front part of the vehicle body, wheels 5 having optimal members such as tires having excellent collision energy absorption performance are arranged.

However, in the conventional vehicle body collision energy absorbing structure, although the wheels 5 are provided, the front part of the vehicle body is configured to collide with the wheels 5 at the end of the collision movement. At most.

This invention was devised in view of the current situation, and its purpose is to suppress the amount of deformation of the vehicle body by effectively utilizing the wheels as collision energy absorbing members, and to suppress the deformation of the vehicle body in the event of a collision. The object of the present invention is to provide a collision energy absorbing structure for a vehicle body that is effective in terms of safety measures and can effectively prevent the engine or power train from crashing into the passenger compartment.

In order to achieve such an object, in the present invention, a movement of the end of the vehicle body at the time of a vehicle collision is provided on the end side of the vehicle body that forms the wheel base and faces the outer circumferential surface of the tire of the wheel. Accordingly, a stopper member that abuts against the wheel is disposed.

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

The embodiments shown in FIGS. 3 and 4 show the case where the present invention is applied to the front part of an automobile.

In this embodiment, the front part of the vehicle includes a front side member 1 disposed separately on the left and right sides of the lower part of the vehicle body, and a hood ledge reinforcement 2 disposed separately on the left and right sides of the upper part of the vehicle body as vehicle body strength members. has been done.

This front side member 1, as shown in FIG.
A bumper stay 6, which is a pan buff mounting member, is fixed to the front end of the bumper stay, and a front cross member 4 is attached to the front end.
is constructed, and the rear end portion is welded and fixed to a second cross member, not shown, which is constructed on a side sill or the like.

A radiator core support 9 is further disposed at the front end of the front side member 1 arranged in this manner, and at the left and right ends of the radiator core support 9,
A stopper member 11 made of an elastic material such as rubber is provided at a portion of the wheel 5 facing the tire outer circumferential surface via a bracket 10.
is fixed. Note that this stopper member 11 is arranged within a range that does not interfere with the steering performance of the wheels 5.

On the other hand, the hood range reinforcement 2 has its side portions welded to the hood ledge 12, and its rear end portion connected to a front pillar 12' which is a vehicle body strength member.

Therefore, in the car body arrow energy absorption structure according to this embodiment, when a head-on collision occurs, the front part of the car body collapses and deforms and moves rearward, as shown in FIG. do. At this time, since the radiator core support 9 also moves rearward at the same time, the stopper member 11 collides from the tire portion 5a of the wheel 5 to the road wheel 5b and absorbs the collision energy before the crushing movement of the vehicle body reaches the final stage of the collision. Absorb. As a result, the engine (G) and power train (D) installed on the front side member 1 via brackets etc.
Since the collision energy acting on the vehicle is greatly reduced, the impact of these collisions into the vehicle interior can be alleviated, and deformation of the vehicle interior can be effectively prevented.

In the above-mentioned embodiment, the present invention has been explained by taking as an example a case where the present invention is applied to the front part of the car, but it is of course applicable to the rear part of the car body, and the stopper member 11 also moves the cross member 4 in the width direction of the car. It may be extended and fixed to the left and right ends of this cross member, which face the outer peripheral surface of the tire of the wheel.

Since this invention includes the above configuration, the wheels can be effectively used as a collision energy absorption unit, and as a result, the collision energy absorption performance of the vehicle body can be significantly improved without reinforcing other strength members. be effective.

[Brief explanation of the drawings] Figure 1 is a cross-sectional view schematically showing the structure of a conventional wheel house trench at the front of a vehicle body, Figure 2 is an explanatory diagram showing the state of the same structure at the time of a collision, and Figure 3 1 is a sectional view similar to FIG. 1 schematically showing a collision energy absorbing structure for a vehicle body according to an embodiment of the present invention, and FIG. 4 is an explanatory view showing the state of the same structure at the time of a collision. 5...Wheel 9...Radiator core-the-boat 11...Stopper member patent applicant Nissan Motor Co., Ltd. No. 1 No. 2 Figure 519

Claims (1)

[Claims] A stopper member is provided on the end side of the vehicle body that forms the wheel head and faces the outer peripheral surface of the tire of the wheel, so that the stopper member abuts against the wheel as the end of the vehicle body moves during a vehicle collision. Collision energy absorption structure of the vehicle body with e% characteristics.