JPS64380Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a vehicle body structure that can reduce the impact received by a pedestrian when the pedestrian collides with the top surface of the hood.

Background of the invention In the conventional car body structure, when a car C collides with a pedestrian M at the tip of the hood F as shown in Fig. 1, the pedestrian M's lower body is pushed forward by the car C. , since the upper body is not pushed forward, it is scooped up onto the hood F, and the head etc. are made to collide with the upper surface of the hood F. Therefore, the hood F is plastically deformed in the engine room R by the impact load at the time of the collision, and comes into contact with the engine E housed in the engine room. At this time, the engine E is molded from a hard material. Therefore, there is a possibility that the impact will be applied to the pedestrian M without the load being alleviated. For this reason, in the past, it was necessary to provide a large clearance between the hood and the engine, which did not allow sufficient freedom in shaping.

Purpose of the invention The present invention was made in view of the current state of conventional car bodies, and is designed to make the hood function as an energy absorbing member when a pedestrian collides with the upper surface of the hood.
Therefore, it is an object of the present invention to provide a vehicle body structure that has a degree of freedom in shaping, has a simple structure, is low cost, and improves the safety performance of a vehicle for pedestrians.

Structure of the invention In order to achieve the above-mentioned purpose, the present invention has the following features:
Supports at both ends are fixed to appropriate parts of the vehicle body and are located near the lower surface of the rear end of the hood, and are fixed to the dash upper panel, and an abutment section provided between the supports and extending in the vehicle width direction. A support member consisting of the following is provided.

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

That is, as shown in FIGS. 2 and 3, an engine 3 is installed in an engine room 2 provided in a vehicle body 1.
etc. are housed and fixed, and are pivotally fixed to the rear opening edge by hood hinge links 4, 4.
A hood 5 for opening and closing the engine room 2 is provided. The hood 5 has the front end of the hood lower surface 5a in contact with the radiator core support 6, and the hood lock striker 7 provided on the radiator core support 6 has a striker rod 8 provided on the front end. By locking, the engine room 2 is closed.

On the other hand, the dash upper panel 9 forming the engine room 2 is provided with an elongated support member 10. This support member includes a contact portion 10a having a required length extending in the vehicle width direction, and strut portions 10 hanging obliquely from both ends of the contact portion 10a.
b, 10b, and joint portions 10c, 10c provided at the tips of the support columns 10b, 10b. The support member 10 has joint parts 10c, 10
c is fixed by welding to the dash top panel 9, and when the hood 5 is closed, the contact portion 10a is attached to the bottom surface 5 of the hood 5.
a It is provided so as to be located near the rear end.

In this embodiment having the above configuration, consider the case where the pedestrian M falls down due to a collision as shown in FIG. Rub. When the impact force is small and a load G as shown in FIG. 3 is generated on the hood top surface 5b, the hood 5 is deflected inward into the engine room 2. However, the hood 5
Since the support member 10 is provided near the rear end of the lower surface 5a of the hood, this bending deformation causes the rear end portion of the lower surface 5a of the hood to
a, and further bending deformation is prevented.
On the other hand, the front end of the hood 5 is supported by the radiator core support 6 with the striker rod 8 engaged with the hood lock striker 7 as described above. It is supported in the vehicle width direction from the lower surface side by the core support 6 and by the support member 10 at the rear end.

Therefore, the hood 5 is prevented from being plastically deformed by coming into contact with the engine 3, and also exhibits a cushioning function by being supported at both ends in the vehicle width direction and deforming in a plane.

Therefore, with respect to the buffering characteristics of the conventional vehicle body shown in the diagram in FIG. 4, the hood 5 acts as an energy absorbing member, so that the displacement of the hood 5 can be maintained below a predetermined level as shown in the diagram. It is possible to absorb the load and the impact on the pedestrian M. When an even larger impact force G is applied, the support portions 10b, 10b and the joint portion 10c,
10c, the support member 10 undergoes plastic deformation and absorbs energy at this time. Therefore, since energy is absorbed by both the hood and the support member 10, impact can be effectively absorbed. As a result, the clearance between the hood and the engine can be reduced, providing greater freedom in shaping.

FIG. 5 shows another embodiment of the present invention,
In the support member 11, strut portions 11a and 11b, which are diagonally suspended from both ends of the contact portion 11a, are formed of leaf springs each having a required elasticity.

According to this embodiment, when the lower surface 5a of the hood comes into pressure contact with the abutting portion 11a due to the bending deformation of the hood 5, the support portions 11b, 11b are bent and deformed.
Since the load is absorbed, not only the cushioning effect of the hood 5 which is supported at both ends as described above but also
Energy is also absorbed by the bending deformation of the support member 11, and the impact on the pedestrian M can be further alleviated.

In this embodiment, the support column 11b is made of a leaf spring, but the structure is not limited to this.
It goes without saying that similar effects can be achieved by molding the material with a suitable elastic material.

Effects of the Invention As explained above, the present invention has pillars at both ends fixed to the dash upper panel near the rear end of the lower surface of the hood that closes off the engine compartment, and a pillar provided between the pillars in the vehicle width direction. Since a support member consisting of a contact portion extending from the front end of the vehicle is disposed, in the event that the front end of the vehicle collides with a pedestrian and the pedestrian is scooped up and collides with the top surface of the hood, the hood will The member can prevent deformation such as contact with the engine housed and stationary in the engine room. Therefore, the scooped up pedestrian does not collide with the engine, which is formed of a hard material, through the hood, so the clearance between the engine and the hood can be reduced, and a degree of freedom in shaping can be obtained.

Further, the load applied to the upper surface of the hood is effectively absorbed by the cushioning action of the hood, which is supported in the vehicle width direction by the supporting member at one end and by the radiator core support at the other end. Therefore, the hood itself can function as an energy absorbing member and absorb energy without using expensive energy absorbing members, and when a large impact force is applied to the hood,
Energy can be absorbed by plastic deformation of the support member itself, and safety performance for pedestrians can be improved regardless of the magnitude of the impact force applied to the hood.

In addition, in the embodiment described above, since the supporting member is configured to have the required elasticity, the supporting member can also absorb energy against the load, thereby further alleviating the impact on pedestrians. It is something that can be done.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a collision situation between a car and a pedestrian, and FIG. 2 is a perspective view showing an embodiment of the present invention.
FIG. 3 is a sectional view taken along the line in FIG. 2 in the hood closed state, and FIG. 4 is a buffer characteristic diagram of the same embodiment.
FIG. 5 is a perspective view showing another embodiment of the present invention. 1...Vehicle body, 2...Engine room, 3...Engine, 5...Hood, 6...Radiator core support, 9...Dashboard top panel, 10, 11
...Supporting member.

Claims (1)

[Scope of utility model registration request] A support near the rear end of the lower surface of the hood that closes off the engine room, consisting of struts at both ends fixed to the dash top panel, and an abutment section provided between the struts and extending in the vehicle width direction. A vehicle body structure characterized by the arrangement of members.