JPH0632461Y2 - Front body structure of automobile - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a front body structure of an automobile.

(Prior art and its problems) For the front body structure of a vehicle,
As shown in the publication, on the front side of the vehicle body of the dash panel,
The front frame is provided so as to extend in the front-rear direction of the vehicle body, the front frame is joined to the dash panel via the base end portion of the front frame, and the base end portion of the front frame is located in front of the base body portion with respect to the base end portion. There is one that is expanded vertically with respect to the front frame part.

In this case, the rigidity of the front end of the front frame is reduced so that the collision energy is absorbed by the front end of the front frame, and the joint area of the front frame to the dash panel is increased by the base end, The acting force (collision force) on the dash panel per unit joint area is reduced, and the high penetration preventing performance of the front frame for the dash panel is secured.

However, in the above-mentioned front vehicle body structure, when the front end of the front frame cannot absorb the collision energy, the collision energy is transmitted to the vehicle interior through the base end of the front frame. Become.

The present invention has been made in view of the above circumstances, and an object thereof is to apply a collision load that cannot be absorbed by the front end portion of the front frame while maintaining a high penetration prevention performance of the front frame with respect to the dash panel. Even if
An object of the present invention is to provide a front body structure of an automobile, which has a minimal influence on the passenger compartment.

(Means and Actions for Solving Problems) In order to achieve the above object, according to the present invention, a front frame is provided on a front side of a dash panel so as to extend in a vehicle front-rear direction. Is joined to the dash panel via a base end portion of the front frame, and the base end portion is vertically extended with respect to a front frame portion in front of the base end portion of the vehicle body. In the structure, a recess is formed in either one of the upper surface and the lower surface of the base end portion.

With the above configuration, the joint area of the front frame with respect to the dash panel is increased as compared with the case where the front frame portion in front of the vehicle body is directly joined with respect to the base end portion.
The acting force (collision force) on the dash panel per unit joint area can be reduced.

On the other hand, when a collision load that cannot be absorbed by the front end of the front frame is applied, not only does the base end deform due to the recess and absorbs collision energy, but the recess also causes the upper and lower surfaces of the base end to absorb. Based on the fact that it is provided on either one of the above, due to the deformation of the base end portion, the front frame portion in front of the vehicle body with respect to the base end portion is changed from the horizontal state to the state inclined with respect to it. The collision load is easily received, and the collision energy is consumed for changing the angle between the base end portion and the front frame portion in front of the base end portion with respect to the vehicle body. Therefore, a large amount of collision energy can be absorbed, and even if a collision load that cannot be completely absorbed is applied to the front end portion of the front frame, the influence on the vehicle interior can be minimized.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 partially shows a front part 1 of an automobile. The front part 1 of the automobile is partitioned by a dash panel 2, a vehicle compartment 3 is behind the dash panel 2 and an engine compartment 4 is in front of the dash panel 2. Are formed.

In the engine room 4, front frames 6 extending in the vehicle front-rear direction are arranged in the vicinity of the front fender apron 5 forming the side wall thereof, that is, on both sides of the engine room 4, and a front frame forming a base end portion of the front frame 6 As shown in FIG. 2, the rear end of the frame lower 7 is joined to the dash panel 2 and a dash lower cross member 8 that reinforces the lower end portion thereof.

At the base end portion 7 of the front frame 6, the engine mount member 10 and the A-type arm 11a of the strut suspension 11 are attached to the lower surface 7a of the engine 7 via a gusset 9 as shown in FIG. The engine E is mounted on the mount member 9 in a horizontal position, that is, in a state where the cylinder arrangement direction is orthogonal to the vehicle front-rear direction. In FIG. 1, reference symbol R is a radiator.

The base end portion 7 of the front frame 6 is also provided with a through hole 12 that opens in the vehicle width direction as shown in FIGS. 2 and 3, and a tie rod 13 is arranged in the through hole 12. It has become so. On the other hand, a concave portion 14 is formed in the lower surface 7a of the base end portion 7 of the front frame 6,
The recess 14 reduces the rigidity of the base 7 against a collision load. In this embodiment, the stabilizer 14 is laid out using the recess 14 so that the stabilizer 15 passes through the recess 14. still,
In FIG. 3, reference numeral 16 indicates a stabilizer support portion, and the stabilizer 15 is attached to the dash lower cross member 8 via a rubber bush 17.

As described above, the concave portion 14 is formed on the lower surface 7a of the front frame lower 7 that constitutes the proximal end portion of the front frame 6, and the concave portion 14 reduces the rigidity of the proximal end portion 7 against a collision load. , Front frame 6
The collision energy that cannot be completely absorbed by the tip end portion of the front end is deformed at the base end portion 7 of the front frame 6 and is absorbed. Moreover, along with the deformation of the base end portion 7, the front frame portion in front of the base end portion 7 is bent so as to approach the lower side of the base end portion 7 around the connecting portion of the both. As a result, the collision energy is also absorbed. For this reason,
In the case of the front engine type vehicle as in the present embodiment, it is possible to prevent the engine E and the like from entering the vehicle interior. Further, as a result, in the present embodiment, the stabilizer 15 is arranged by using the concave portion 14 located near the front suspension 11, so that the degree of freedom of layout in the arrangement of the stabilizer 15 is high. Can be increased. That is, the stabilizer 15
It is possible to arrange the length as a small one.

(Effect of the Invention) As described above, the present invention maintains a high penetration preventing performance of the front frame with respect to the dash panel, and even if a collision load that cannot be absorbed by the front end of the front frame is applied, The influence on the vehicle interior can be minimized as much as possible.

[Brief description of drawings]

1 is an explanatory view partially showing a front portion of an automobile, FIG. 2 is a perspective view showing a base end portion of a front frame, and FIG. 3 is a base portion of a front frame indicated by reference symbol A in FIG. It is a side view of an end part. 2: Dash panel 6: Front frame 7: Front frame base (front frame lower) 7a: Lower surface 14: Recess

Claims (1)

[Scope of utility model registration request] 1. A front frame is provided on a vehicle body front side of a dash panel so as to extend in a vehicle front-rear direction, and the front frame is joined to the dash panel via a base end portion of the front frame. However, in a front body structure of an automobile which is vertically extended with respect to a front frame portion which is located in front of the base end with respect to the vehicle body, a recess is formed in one of upper and lower surfaces of the base end. The front body structure of an automobile characterized by the following.