JP3882629B2 - Shock absorption structure for automobiles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shock absorbing structure for automobiles.
[0002]
[Prior art]
In the conventional automobile impact absorbing structure offset collision, since the impact load is concentrated on either the left or right front side member, the longitudinal deformation of the front side member is larger than that of the full wrap collision. No. 2000-289651).
[0003]
[Problems to be solved by the invention]
In such a conventional technique, at the time of an offset collision, the front side member is compressed and deformed in the longitudinal direction thereof, and then the engine is moved rearward through an engine mount coupled to the front side member, so that the vehicle interior direction Therefore, if the vehicle interior side is reinforced in order to reduce the amount of engine movement into the vehicle interior, the cost will rise and the weight will deteriorate. Also, if there are parts such as the brake master cylinder between the rear of the engine and the passenger compartment, the parts themselves may enter the passenger compartment as the engine moves. Therefore, the degree of freedom of layout in the engine room is deteriorated, and improvement is demanded.
[0004]
The present invention has been made paying attention to such a conventional technique, and provides a shock absorbing structure for automobiles that does not require reinforcement on the side of the passenger compartment and can secure the degree of freedom of layout in the engine compartment. is there.
[0005]
[Means for Solving the Problems]
According to the first aspect of the present invention, the engine unit is supported by an engine mount on one of the left and right front side members, and connected to the engine unit by a transmission mount on the other front side member. A shock absorbing structure for an automobile in which a transmission thus formed is supported, wherein a front side member in the vicinity of a connection portion with the engine mount is reinforced with a lower side inner side surface in the vehicle width direction on the lower side of the front side member. and fixed to the reinforcing member, when an impact force to the front side members from the front of the vehicle is applied, the front side member is to be bent inward in the vehicle width direction immediately before portions of the first reinforcing member as a starting point It is characterized by.
[0006]
According to the first aspect of the present invention, the lower side and the inner side of the front side member are reinforced by the first reinforcing member, and the front end portion of the first reinforcing member serves as a strength change point. When the impact force of the offset collision is applied to the front side member, the immediately preceding portion of the first reinforcing member is bent inward in the vehicle width direction. As a result, the engine unit is pushed inward, the restriction of the engine unit by the engine mount is released, and the engine unit is rotated. As a result, the amount of movement of the engine unit to the vehicle interior side is suppressed. Accordingly, the reinforcement on the passenger compartment side is unnecessary, and the space behind the engine unit outside the rotational movement locus of the engine unit can be effectively used.
[0007]
According to a second aspect of the present invention, the second reinforcing member is located near the rear end of the first reinforcing member on the outer side in the vehicle width direction of the front side member on the side where the first reinforcing member is provided. Is provided.
[0008]
According to the invention described in claim 2, since the second reinforcing member is reinforced on the opposite side of the same front side member on the side where the first reinforcing member is arranged, that is, on the outside of the front side member, The front end of the second reinforcing member can be deformed outwardly opposite to the first reinforcing member front end. For this reason, since the front side member is bent twice, the engine unit is rotated by the deformation of the front end of the first reinforcing member, but the movement amount is small and the effective space behind the engine unit is expanded. .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be described below with reference to the drawings.
[0012]
1-7 is a figure which shows one Embodiment of this invention.
[0013]
The shock absorbing structure 1 for an automobile includes a first front side member 2 that is “one front side member” on the right side, a second front side member 3 that is “the other front side member” on the left side, and the first front side member 3. The engine unit 9 is supported on the side member 2 via the engine mount 6, and the transmission 29 connected to the engine unit 9 via the transmission mount 10 is supported on the second front side member 3. .
[0014]
A first reinforcing member 7 that reinforces the inner side surface in the vehicle width direction of the first front side member 2 is fixed to the first front side member 2 in the vicinity of the connecting portion with the engine mount 6.
[0015]
A second reinforcing member 8 is disposed near the rear end portion of the first reinforcing member 7 on the outer side in the vehicle width direction of the first front side member 2 on the side where the first reinforcing member 7 is provided. Being done. The first reinforcing member 7 is formed by reinforcing the lower side of the first front side member 2.
[0016]
A radiator housing 5 and a dash panel 4 are arranged before and after the first front side member 2 and the second front side member 3 constituting the engine room 13. Reference numeral 11 denotes a brake master cylinder, and reference numeral 12 denotes a vehicle compartment partitioned by the engine room 13 and the dash panel 4.
[0017]
Next, the operation of this embodiment will be described.
[0018]
In this embodiment, the inner side of the first front side member 2 is reinforced by the first reinforcing member 7, and therefore, the portion immediately before the first reinforcing member 7 becomes a point of change in strength. When the impact force F of the offset collision is applied to the first front side member 2 in the state shown in the figure, the stress concentrates immediately before this, and the first reinforcing member of the first front side member 2 as shown in FIG. The front part of 7 is bent inward in the vehicle width direction. As a result, the engine unit 9 is pushed inward, the restriction of the engine unit 9 by the engine mount 6 is released, and the engine unit 9 is rotated. As a result, the amount of movement of the engine unit 9 toward the vehicle interior 12 is suppressed. Accordingly, the reinforcement on the side of the vehicle compartment 12 is not necessary, and the space behind the engine unit 9 outside the rotational movement locus of the engine unit 9 can be used effectively.
[0019]
Further, since the second reinforcing member 8 is reinforced on the opposite side of the same first front side member 2 to the side where the first reinforcing member 7 is arranged, that is, the outside of the first front side member 2 is reinforced. The front end of the second reinforcing member 8 can be deformed outwardly opposite to the front end of the first reinforcing member 7. Therefore, since the first front side member 2 is bent twice, the engine unit 9 is rotated by the deformation of the front end of the first reinforcing member 7, but the movement amount is small, and the engine unit 9 The effective space behind is expanded.
[0020]
Further, since the first reinforcing member 7 reinforces the lower side of the first front side member 2, a change in strength at the front end of the first reinforcing member 7 is increased, and deformation at the front end is more reliably performed. I can do it.
[Brief description of the drawings]
FIG. 1 is a plan view showing a shock absorbing structure for an automobile according to an embodiment of the present invention.
2 is a cross-sectional view taken along line SA-SA in FIG.
3 is a perspective view of the first front side member side of FIG. 1. FIG.
4 is a cross-sectional view taken along line SB-SB in FIG.
5 is a cross-sectional view taken along line SC-SC in FIG.
6 is a plan view showing only a main part for showing the movement of FIG. 1. FIG.
7 is a plan view showing the deformation of the engine unit and the first front side member due to the offset impact load F as shown in FIG. 6;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Shock absorption structure 2 for motor vehicles The 1st front side member 3 which is "one front side member" The 2nd front side member 6 which is "the other front side member" Engine mount 7 1st reinforcement member 8 2nd reinforcement Member 9 Engine unit 10 Transmission mount 13 Engine room

Claims (2)

The engine unit is supported on one of the left and right front side members via an engine mount, and the transmission connected to the engine unit is supported on the other front side member via a transmission mount. A shock absorbing structure for automobiles,
A first reinforcing member that reinforces the inner side surface in the vehicle width direction on the lower side of the front side member is fixed to the front side member in the vicinity of the connecting portion with the engine mount, and impact force is applied to the front side member from the front of the vehicle. When the vehicle is applied, the front side member is bent inward in the vehicle width direction starting from the immediately preceding portion of the first reinforcing member . The shock absorbing structure for an automobile according to claim 1,
A second reinforcing member is disposed near the rear end of the first reinforcing member on the outer side in the vehicle width direction of the front side member on the side where the first reinforcing member is provided. Shock absorption structure for automobiles.

Images