JP2009248856A - Energy absorption structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an energy absorption structure wherein an energy absorption member effectively exhibits an energy absorption performance. <P>SOLUTION: In the energy absorption structure 10, a spreader plate 16 is arranged between a front bumper reinforcement 12 and the energy absorption member 14, and surface rigidity of the spreader plate 16 in the vehicle width direction is enhanced by a plate-shaped plate body 18 reinforced by reinforcement wall parts 20 and 22. According to this constitution, bending of the plate body 18 in the horizontal direction is restrained during inputting of the impact load, and the plate body part 18 transmits the load to the energy absorption member 14 by the whole surface, and the energy absorption member 14 effectively exhibits an energy absorption performance. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an energy absorbing structure, and more particularly to an energy absorbing structure in which a plate member is disposed between a bumper reinforcement and an energy absorbing member.

Conventionally, the following is known as this kind of energy absorption structure (for example, refer patent document 1). That is, Patent Document 1 discloses an example of an energy absorption structure. In the example described in Patent Document 1, a flat bracket is arranged between the front side member and the energy absorbing member.
Japanese Patent Laying-Open No. 2005-47387 (FIG. 1) JP 2005-271875 A

  However, in the example described in Patent Document 1, the bracket is formed in a flat plate shape, and there is a possibility that the surface rigidity of the bracket in the vehicle width direction is insufficient. If the surface rigidity of the bracket in the vehicle width direction is insufficient, the bracket bends when an impact load is input, so the bracket cannot transmit the load to the energy absorbing member over the entire surface, and the energy absorbing member is effective in energy absorption performance. There is a possibility that it cannot be demonstrated.

  This invention is made | formed in view of the said subject, Comprising: It aims at providing the energy absorption structure which can make an energy absorption member exhibit energy absorption performance effectively.

  In order to solve the above-mentioned problem, the energy absorption structure according to claim 1 includes a bumper reinforcement extending in a vehicle width direction and a vehicle front-rear direction extending with respect to the bumper reinforcement. An energy absorbing member disposed on the side of the vehicle, and extending in the vehicle width direction and the vehicle height direction, disposed between the bumper reinforcement and the energy absorbing member in the vehicle front-rear direction, and the bumper reinforcement And a plate member having a plate body portion coupled to the energy absorbing member, and a reinforcing wall portion extending in the vehicle width direction and the vehicle front-rear direction and integrally formed with the plate body portion. ing.

  In the energy absorbing structure according to the first aspect, the plate member is disposed between the bumper reinforcement and the energy absorbing member. When a collision load is input to the bumper reinforcement, the collision load is transmitted from the bumper reinforcement to the energy absorbing member via the plate member, and the energy absorbing member is compressed along the longitudinal direction of the vehicle to cause the collision. The energy of the load is absorbed.

  Here, the plate member extends in the vehicle width direction and the vehicle height direction, and is disposed on the plate main body portion disposed between the bumper reinforcement and the energy absorbing member in the vehicle front-rear direction. The reinforcing wall portion extending in the direction is integrally formed. That is, the plate body portion formed in a flat plate shape is reinforced by the reinforcing wall portion, thereby increasing the surface rigidity in the vehicle width direction.

  Therefore, since it can suppress that a plate main-body part bends at the time of impact load input, a plate main-body part can transmit a load to an energy absorption member in the whole surface (that is, an energy absorption member can be plane-fractured), and an energy absorption member Can effectively exhibit energy absorption performance.

  Thus, according to the energy absorption structure of the first aspect, the energy absorption member can effectively exhibit the energy absorption performance.

  The energy absorbing structure according to claim 2 is the energy absorbing structure according to claim 1, wherein the reinforcing wall portions are respectively disposed on the upper side and the lower side in the vehicle height direction with respect to the energy absorbing member, and each of the plate main bodies. It is set as the structure which has the part extended to the energy absorption member side from the part.

  According to the energy absorption structure of the second aspect, even when a load that shifts in the vehicle height direction is applied to the energy absorption member and the plate member at the time of a collision, the plate body portion in the reinforcing wall portion moves toward the energy absorption member side. Since the energy absorbing member is locked to the extended portion, the energy absorbing member can be prevented from shifting in the vehicle height direction with respect to the plate member. Thereby, the energy absorption member can exhibit energy absorption performance more effectively.

  The energy absorbing structure according to claim 3 is the energy absorbing structure according to claim 2, wherein the reinforcing wall portions are respectively arranged on the upper side and the lower side in the vehicle height direction with respect to the bumper reinforcement, The plate has a portion extending from the plate body to the bumper reinforcement side.

  According to the energy absorption structure of the third aspect, even when a load that is shifted in the vehicle height direction is applied to the plate member and the bumper reinforcement at the time of a collision, the plate body portion in the reinforcing wall portion moves toward the bumper reinforcement side. Since the extended portion is locked to the bumper reinforcement, the displacement of the plate member relative to the bumper reinforcement in the vehicle height direction can be suppressed. Thereby, the energy absorbing member can exhibit the energy absorbing performance even more effectively.

  As described above in detail, according to the present invention, the energy absorbing member can effectively exhibit energy absorbing performance.

  Hereinafter, an embodiment of the energy absorption structure of the present invention will be described with reference to the drawings.

  1 and 2 show an energy absorbing structure 10 according to an embodiment of the present invention. In these figures, an arrow UP, an arrow FR, and an arrow OUT respectively indicate the vehicle vertical direction upper side, the vehicle front-rear direction front side, and the vehicle width direction outer side of the vehicle to which the energy absorbing structure 10 is applied.

  The energy absorbing structure 10 shown in these drawings is suitably applied to a front part of a vehicle body in a vehicle such as a passenger car, for example, and has the following configuration. That is, the energy absorption structure 10 includes a front bumper reinforcement 12, an energy absorption member 14, and a spreader plate 16 as a plate member.

  The front bumper reinforcement 12 extends in the vehicle width direction and supports a front bumper (not shown).

  The energy absorbing member 14 extends in the vehicle front-rear direction and is disposed on the rear side in the vehicle front-rear direction with respect to the front bumper reinforcement 12. The energy absorbing member 14 is made of, for example, a fiber reinforced resin material such as CFRP.

  The spreader plate 16 includes a plate main body portion 18 and a pair of reinforcing wall portions 20 and 22. The plate main body 18 extends in the vehicle width direction and the vehicle height direction, and is disposed between the front bumper reinforcement 12 and the energy absorbing member 14 in the vehicle front-rear direction.

  The pair of reinforcing wall portions 20 and 22 extend in the vehicle width direction and the vehicle front-rear direction, respectively. One reinforcing wall portion 20 is integrally formed at the upper end of the plate main body portion 18 in the vehicle height direction, and the other reinforcing wall portion 22 is formed at the lower end portion of the plate main body portion 18 in the vehicle height direction. It is integrally formed.

  In addition, the pair of reinforcing wall portions 20 and 22 are configured to include first extending portions 20A and 22A and second extending portions 20B and 22B, respectively. The first extending portion 20A of the one reinforcing wall portion 20 is disposed on the upper side in the vehicle height direction with respect to the energy absorbing member 14, and extends from the plate main body portion 18 to the energy absorbing member 14 side (rear side in the vehicle front-rear direction). Has been issued. Further, the first extending portion 22A of the other reinforcing wall portion 22 is disposed on the lower side in the vehicle height direction with respect to the energy absorbing member 14, and from the plate main body portion 18 to the energy absorbing member 14 side (rear side in the vehicle front-rear direction). ).

  On the other hand, the second extending portion 20B of the one reinforcing wall portion 20 is disposed on the upper side in the vehicle height direction with respect to the front bumper reinforcement 12, and from the plate body portion 18 to the front bumper reinforcement 12 side (vehicle front and rear). It extends to the front side). Further, the second extending portion 22B of the other reinforcing wall portion 22 is disposed on the lower side in the vehicle height direction with respect to the front bumper reinforcement 12, and from the plate main body portion 18 to the front bumper reinforcement 12 side (vehicle longitudinal direction). It is extended to the front side.

  That is, the spreader plate 16 has an I-shaped cross section as shown in FIG. More specifically, the first extending portions 20A and 22A are spaced apart from the vehicle height direction upper side portion 14A and the lower side portion 14B of the energy absorbing member 14 to the vehicle height direction upper side and lower side, respectively. The second extending portions 20B and 22B are in contact with the vehicle height direction upper portion 12A and the lower portion 12B of the front bumper reinforcement 12, respectively.

  As shown in FIG. 2, the spreader plate 16, the front bumper reinforcement 12, and the energy absorbing member 14 include the plate main body 18, the vehicle width direction wall portion 12 </ b> C of the front bumper reinforcement 12, and the energy absorbing member 14. In a state where the vehicle width direction wall portion 14C is overlapped in the vehicle front-rear direction, these are joined together by bolts 24 and nuts 26 so as to be integrally fixed. Although not particularly illustrated, there are a plurality of connecting portions of the plate body 18, the vehicle width direction wall portion 12 </ b> C, and the vehicle width direction wall portion 14 </ b> C by bolts 24 and nuts 26.

  Next, the operation and effect of the energy absorbing structure 10 according to one embodiment of the present invention will be described.

  In the energy absorbing structure 10 according to the embodiment of the present invention, the spreader plate 16 is disposed between the front bumper reinforcement 12 and the energy absorbing member 14. For example, when a collision load is input to the front bumper reinforcement 12 from the front side in the vehicle front-rear direction due to a frontal collision of the vehicle, the collision load is applied from the front bumper reinforcement 12 to the energy absorbing member 14 via the spreader plate 16. The energy of the collision load is absorbed by the energy absorbing member 14 being compressed along the vehicle longitudinal direction.

  Here, the spreader plate 16 extends in the vehicle width direction and the vehicle height direction, and is disposed on the plate body 18 disposed between the front bumper reinforcement 12 and the energy absorbing member 14 in the vehicle front-rear direction. The reinforcement wall portions 20 and 22 extending in the width direction and the vehicle front-rear direction are integrally formed. That is, the plate body portion 18 formed in a flat plate shape is reinforced by the reinforcing wall portions 20 and 22 so that the surface rigidity in the vehicle width direction is enhanced.

  Therefore, since it can suppress that the plate main-body part 18 bends in the horizontal direction at the time of an impact load input, the plate main-body part 18 can transmit a load to the energy absorption member 14 in the whole surface (that is, the energy absorption member 14 is destroyed on a plane. The energy absorbing member 14 can effectively exhibit energy absorbing performance.

  Thus, according to the energy absorbing structure 10 according to one embodiment of the present invention, the energy absorbing member 14 can effectively exhibit energy absorbing performance.

  Further, according to the energy absorbing structure 10 according to the embodiment of the present invention, for example, even when a load deviating in the vehicle height direction is applied to the energy absorbing member 14 and the spreader plate 16 at the time of a frontal collision of the vehicle. The energy absorbing member 14 is locked to the first extending portion 20A of the wall portion 20 or the first extending portion 22A of the reinforcing wall portion 22, so that the energy absorbing member 14 in the vehicle height direction with respect to the spreader plate 16 is secured. The displacement can be suppressed (that is, the displacement can be accommodated within the range of the plate main body portion 18). Thereby, the energy absorption member 14 can exhibit energy absorption performance more effectively.

  Furthermore, according to the energy absorbing structure 10 according to an embodiment of the present invention, for example, when a load that shifts in the vehicle height direction acts on the spreader plate 16 and the front bumper reinforcement 12 at the time of a frontal collision of the vehicle, The second extending portion 20B of the reinforcing wall portion 20 or 22B of the reinforcing wall portion 22 is locked to the front bumper reinforcement 12 so that the spreader plate 16 is displaced from the front bumper reinforcement 12 in the vehicle height direction. Can be suppressed. Thereby, the energy absorption member 14 can exhibit the energy absorption performance even more effectively.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited above, Of course, it can change and implement variously within the range which does not deviate from the main point. .

  For example, in the above embodiment, the energy absorbing structure 10 is applied to the front part of the vehicle body and includes the front bumper reinforcement 12. However, the energy absorption structure 10 is applied to the rear part of the vehicle body and includes the rear bumper reinforcement. Also good.

  Moreover, in the said embodiment, although the 1st extension part 20A, 22A was spaced apart from the vehicle height direction upper part 14A and the lower side part 14B in the energy absorption member 14, respectively in the vehicle height direction upper side and lower side. The energy absorbing member 14 may be in contact with the vehicle height direction upper side portion 14A and the lower side portion 14B, respectively.

It is a perspective view which shows the structure of the energy absorption structure which concerns on one Embodiment of this invention. It is a section side view showing the composition of the energy absorption structure concerning one embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Energy absorption structure 12 Front bumper reinforcement 14 Energy absorption member 16 Spreader plate (plate member)
18 Plate body parts 20, 22 Reinforcing wall parts 20A, 22A First extending parts 20B, 22B Second extending parts

Claims (3)

Bumper reinforcement extended in the vehicle width direction,
An energy absorbing member that extends in the vehicle front-rear direction and is disposed on one side of the vehicle front-rear direction with respect to the bumper reinforcement;
A plate extending in the vehicle width direction and the vehicle height direction, disposed between the bumper reinforcement and the energy absorbing member in the vehicle front-rear direction, and coupled to the bumper reinforcement and the energy absorbing member A plate member having a main body portion and a reinforcing wall portion integrally formed with the plate main body portion, extending in the vehicle width direction and the vehicle front-rear direction;
Energy absorption structure with The reinforcing wall portions are respectively disposed on the vehicle height direction upper side and the lower side with respect to the energy absorbing member, and each has a portion extending from the plate main body portion to the energy absorbing member side.
The energy absorbing structure according to claim 1. The reinforcing wall portions are respectively arranged on the vehicle height direction upper side and lower side with respect to the bumper reinforcement, and each has a portion extending from the plate main body portion to the bumper reinforcement side.
The energy absorption structure according to claim 2.

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