JP7247922B2 - Vehicle impact mitigation structure - Google Patents

Description

The present invention comprises an exterior member and a shock absorbing member disposed inside the vehicle, and absorbs a load applied to the exterior member by compressing and deforming the shock absorbing member in the direction of the load input. Regarding structure.

This type of vehicle employs a shock absorbing structure in which a shock absorbing member provided inside the vehicle absorbs the shock load input to the exterior member in the event of a light collision or the like. For example, the front part of the vehicle disclosed in Patent Document 1 is provided with a bumper as a shock absorbing structure. have. The shock absorbing member is a soft resin member extending in the front-rear direction, and can be elastically compressed and deformed in the front-rear direction, which is the load input direction. In the known technique, a shock absorbing member is arranged on a beam-shaped bumper beam extending in the vehicle width direction, and the front side of the shock absorbing member and the bumper beam is covered with the lower part of the bumper. In the event of a light collision, the load input from the front of the vehicle to the lower portion of the bumper is absorbed by the impact absorbing member compressing and deforming backward by a predetermined stroke.

By the way, in the above-mentioned field of vehicles, from the viewpoint of alleviating design restrictions of exterior members, there are cases in which solid resin impact absorbing members with short forward and backward deformation strokes are used. For example, in Patent Document 2, a front portion of a vehicle is provided with a solid resin impact absorbing member behind a bumper face as an exterior member. This shock absorbing member is a hollow member formed in a hexagonal shape in a vertical cross section, and is fixed to the lower frame positioned behind it. A trapezoidal portion of the front portion of the impact absorbing member, which is trapezoidal in longitudinal section, is covered with a bumper face (air dam portion) having a U-shaped longitudinal section and an open rear portion. In Patent Document 2, the load input to the air dam portion from the front of the vehicle can be absorbed by compressing and deforming the front portion of the impact absorbing member so that it is crushed like a trumpet.

JP 2015-140029 A JP 2005-297726 A

Here, although the shock absorbing member of Patent Document 2 has a short deformation stroke in the front-rear direction, it also deforms in the vertical direction while being crushed like a trumpet. When the shock absorbing member deforms in the vertical direction (direction different from the load input direction) in this way, it is necessary to ensure smooth deformation of the shock absorbing member by avoiding interference with the exterior member in the vertical direction as much as possible. is desirable. It is conceivable to devise the shape of the exterior member to avoid interference with the shock absorbing member in the vertical direction, but such a configuration may impose new restrictions on the design of the exterior member. The present invention has been devised in view of the above points, and the problem to be solved by the present invention is to relax the design restrictions of the exterior member while ensuring smooth deformation of the shock absorbing member. It is in.

As a means for solving the above-mentioned problems, the vehicle shock absorbing structure of the first invention compressively deforms a shock absorbing member disposed inside the vehicle in the direction of load input to the load input to the exterior member. It is designed to absorb. In this type of structure, even when a portion of the shock absorbing member deforms in a direction different from the load input direction, it is possible to relax the design constraints of the exterior member while ensuring smooth deformation of the shock absorbing member. It is desirable that

Therefore, in the vehicle shock absorbing structure of the present invention, when a part of the shock absorbing member deforms in a direction different from the load input direction in the process of compressive deformation, the part of the exterior member facing it is deformed. A guide member is provided for guiding in the other direction away from the impact absorbing member. In the present invention, the guide member guides a portion of the exterior member in the other direction to avoid interference with a portion of the shock absorbing member as much as possible, thereby ensuring smooth deformation of the shock absorbing member. . In the present invention, the design of the exterior member can be set without being influenced by the deformation of the shock absorbing member in the other direction, so that the design of the exterior member can be relaxed.

The vehicle shock absorbing structure of the second invention is the vehicle shock absorbing structure of the first invention, wherein a part of the exterior member is arranged to face the vehicle body member fixed inside the vehicle from the load input direction. The guide member is configured to guide a part of the exterior member in the other direction so as to deviate from the vehicle body member. In the present invention, by guiding a part of the exterior member in the other direction so as to deviate from the vehicle body member by the guide member, the part of the exterior member hits the vehicle body member and stops during compression deformation of the shock absorbing member. You can avoid the situation as much as possible.

A vehicle shock absorbing structure of a third invention is the vehicle shock absorbing structure of the first invention or the second invention, wherein a vehicle body member fixed inside the vehicle faces the vehicle interior of the exterior member from the load input direction. are placed in The impact absorbing member is arranged on one of the exterior member and the vehicle body member, and the guide member is arranged on the other of the vehicle body member and the exterior member. In the present invention, the guide member and the shock absorbing member are arranged separately in the exterior member and the vehicle body member so that they can move relative to each other. By doing so, a part of the exterior member can be more appropriately moved in the other direction with respect to the shock absorbing member by the guide member.

A vehicle shock absorbing structure according to a fourth aspect of the invention is the vehicle shock absorbing structure according to the third aspect of the invention, wherein the guide member is disposed on the exterior member. In the present invention, since the guide member moves in the other direction with respect to the shock absorbing member together with a part of the exterior member, smooth deformation of the shock absorbing member can be ensured more appropriately.

A vehicle shock absorbing structure according to a fifth aspect of the present invention is a vehicle shock absorbing structure according to any one of the first to fourth aspects of the invention, wherein a vehicle body member fixed inside the vehicle is provided on the vehicle inner side of the bumper cover as an exterior member. The bumper reinforcements are arranged so as to face each other from the front-rear direction, which is the load input direction. When the shock absorbing member provided in the bumper reinforcement compressively deforms in the longitudinal direction, a part of the shock absorbing member deforms in at least one of upward and downward directions. Therefore, the guide member arranged on a part of the bumper cover is arranged on at least one of the upper side and the lower side which are in the other direction with respect to the shock absorbing member. A contact surface capable of coming into contact with the bumper reinforcement is formed at the front end of the guide member on the inside of the vehicle. is arranged so as to protrude from the other end side of the The shock absorbing structure of the present invention includes a bumper cover, a shock absorbing member, and a bumper reinforcement so as to form a front bumper. transform. Therefore, in the present invention, the guide member is arranged on the bumper cover and arranged on at least one of the upper side and the lower side of the shock absorbing member so as to accommodate the deformation of the shock absorbing member in the other direction. Then, the contact surface of the guide member is pressed against the bumper reinforcement by the load input to the bumper cover, and the inclined contact surface of the guide member moves in the other direction. A part of the cover can be guided in the other direction.

According to the first aspect of the present invention, it is possible to relax restrictions on the design of the exterior member while ensuring smooth deformation of the shock absorbing member. Moreover, according to the second invention, smooth deformation of the impact absorbing member can be ensured more reliably. Further, according to the third invention, smooth deformation of the impact absorbing member can be ensured more appropriately. Further, according to the fourth invention, smooth deformation of the impact absorbing member can be ensured more appropriately. According to the fifth aspect of the invention, it is possible to secure smooth deformation of the impact absorbing member while relaxing design restrictions on the bumper cover as the exterior member.

Fig. 2 is a transparent perspective view of the shock absorbing structure for the front part of the vehicle as seen from the front; Fig. 2 is a see-through perspective view of the shock absorbing structure for the front part of the vehicle as seen from the rear; FIG. 2 is a see-through top view of the shock absorbing structure for the front part of the vehicle; 4 is a schematic cross-sectional view of the shock absorbing structure corresponding to the IV-IV line cross section of FIG. 3; FIG. 4 is a side view of the guide member and the shock absorbing member; FIG. It is a front view of a guide member and an impact-absorbing member. 4 is a schematic cross-sectional view of the shock absorbing structure when a load is input; FIG. FIG. 4 is a schematic cross-sectional view of the shock absorbing structure showing a deformation mode of the shock absorbing member;

Embodiments for carrying out the present invention will be described below with reference to FIGS. 1 to 8. FIG. In each figure, arrows indicating the front-rear direction, the left-right direction, and the up-down direction of the vehicle are appropriately illustrated. 1 to 3, for the sake of convenience, only the right side of the lower portion of the vehicle is shown enlarged, and the bumper cover is shown by broken lines. In FIGS. 7 and 8, the arrow indicating the direction of load input is denoted by F indicating the load.

[Impact mitigation structure, body member]
First, based on FIGS. 1 to 3, the outline of the shock absorbing structure 4 for a vehicle will be described. This vehicle shock absorbing structure 4 is configured as a front bumper 6 provided in the front portion of the vehicle 2 . The front bumper 6 is provided with a bumper cover 10, a shock absorbing member 20, and a bumper reinforcement 30 as its basic configuration. Here, the bumper reinforcement 30 is a beam-like member extending in the vehicle width direction corresponding to the vehicle body member of the present invention, and is made of, for example, an aluminum alloy and formed in a rectangular tubular shape. The left and right sides of the bumper reinforcement 30 gently curve rearward, and are fixed to a pair of left and right side members (not shown) extending in the longitudinal direction of the vehicle and disposed inside the vehicle 2 .

[Impact absorbing member]
Further, on the front side of the bumper reinforcement 30, the shock absorbing member 20 shown in FIGS. 1 to 3 is arranged. The shock absorbing member 20 has both left and right sides gently curved rearward, and is arranged along substantially the entire width of the bumper reinforcement 30 . The impact absorbing member 20 is made of solid resin and, as shown in FIGS. 2 and 4, comprises an absorber main body 21 extending in the vehicle width direction and a joint 25 formed behind it. ing. Here, the joint portion 25 is formed in a U-shape with an open rear side in the vertical cross-sectional view shown in FIG. 4, and is joined to the bumper reinforcement 30 while covering the bumper reinforcement 30 from the front side. That is, the upper portion 25a of the joint portion 25 is joined so as to cover the portion from the front upper side to the upper portion of the bumper reinforcement 30 . A lower portion 25b of the joint portion 25 is joined so as to cover a portion from the front lower side to the lower portion of the bumper reinforcement 30. As shown in FIG.

4 to 6, the absorber main body 21 is a hollow columnar part projecting forward from between the upper part 25a and the lower part 25b of the joint part 25, and serves as the main body of the shock absorbing member 20. None. The absorber main body 21 has a vertical cross-sectional shape formed in a horizontal trapezoidal shape, and is composed of a front wall portion 22 extending vertically from the front end thereof, and an upper wall portion 23 and a lower wall portion 24 extending rearward from the front wall portion 22 . It is configured. Here, the upper wall portion 23 shown in FIG. 4 has its front side gently inclined upward and rearward from the upper edge of the front wall portion 22, and its rear side extends rearward in a substantially horizontal state to connect to the joint portion 25. there is An upper folding line 23L is formed at the boundary between the front and rear sides of the upper wall portion 23, and from this upper folding line 23L, the upper wall portion 23 can be deformed (buckled) upward so as to form an inverted V shape. be. The front side of the lower wall portion 24 gently slopes downward and rearward from the lower edge of the front wall portion 22 , and the rear side of the lower wall portion 24 slopes further gently to connect to the joint portion 25 . A lower folding line 24L is formed at the front and rear boundary of the lower wall portion 24, and from this lower folding line 24L as a starting point, the lower wall portion 24 can be deformed (buckled) downward to form a V shape. . In this way, referring to FIGS. 7 and 8, the absorber main body 21 is compressed and deformed rearward while the front wall 22 receives the load F in the event of a light collision, which will be described later. The walls 24 are vertically deformed so as to separate from each other.

[Bumper cover (exterior material)]
The bumper cover 10 shown in FIGS. 1 to 3 is a member that forms the exterior design of the front bumper 6, and includes a lower bumper cover 11 and an upper bumper cover 15 as shown in FIG. Attached members (not shown) such as a bumper grille and a plated garnish can be integrally attached to appropriate positions of the bumper cover 10 . The lower bumper cover 11 is arranged on the lower side of the front portion of the vehicle 2, and both left and right sides of the lower bumper cover 11 are gently curved rearward along the bumper reinforcement 30 and the shock absorbing member 20. As shown in FIG. The lower bumper cover 11 is formed in a substantially U-shape with its rear side opened when viewed in longitudinal section, and includes a front plate portion 12 extending vertically at a front position and an upper plate portion extending rearward from the upper edge of the front plate portion 12 . It has a portion 13 and a lower plate portion 14 extending rearward from the lower edge of the front plate portion 12 . The upper bumper cover 15 extends toward the upper side of the vehicle from the lower bumper cover 11 with its lower end attached to the rear end (13E) of the upper plate portion 13 of the lower bumper cover 11 .

[Arrangement Positions of Impact Absorption Members and Bumper Reinforcements for Lower Bumper Cover]
In the front bumper 6 shown in FIG. 4 , the impact absorbing member 20 is arranged behind the lower bumper cover 11 (inside the vehicle) and in front of the bumper reinforcement 30 . The front plate portion 12 of the lower bumper cover 11 is arranged in front thereof so as to face the front wall portion 22 of the absorber body portion 21 positioned behind it. The upper plate portion 13 of the lower bumper cover 11 is arranged above the upper wall portion 23 of the absorber main body portion 21 so as to gradually incline upward from the front to the rear. The lower plate portion 14 of the lower bumper cover 11 is arranged below the lower wall portion 24 of the absorber main body portion 21 so as to face the lower wall portion 24 of the absorber main body portion 21 so as to gradually incline downward from the front to the rear.

The lower bumper cover 11 shown in FIG. 4 is arranged at a position slightly lowered with respect to the absorber main body 21 of the shock absorbing member 20 in order to ensure the desired design. Therefore, the lower plate portion 14 of the lower bumper cover 11 and the lower wall portion 24 of the absorber main body portion 21 are arranged with an appropriate gap C1 (vertical interval) provided therebetween. A rear end (not shown) of the lower plate portion 14 is positioned below the bumper reinforcement 30 positioned behind it so as not to face the bumper reinforcement 30 . On the other hand, the upper plate portion 13 of the lower bumper cover 11 is relatively close to the upper wall portion 23 of the absorber body portion 21, and the gap C2 therebetween is reduced. Furthermore, the rear end 13E of the upper plate portion 13 is arranged so as to face the upper portion of the bumper reinforcement 30 located behind it in the front-rear direction.

In the front bumper 6, as shown in FIGS. 7 and 8, the load F (impact load) input to the lower bumper cover 11 is applied by the absorber main body 21 of the impact absorbing member 20 in the longitudinal direction, which is the load input direction. Compressive deformation and absorption. At this time, although the deformation stroke in the longitudinal direction of the absorber body 21 is relatively short, the upper wall portion 23 and the lower wall portion 24 forming a part of the absorber main body portion 21 are deformed in the vertical direction (the other direction different from the load input direction). To go. In this embodiment, the upper plate portion 13 of the lower bumper cover 11 is close to the upper wall portion 23 of the absorber body portion 21 as described above, and the gap C2 therebetween is relatively small. In such a configuration, consideration should be given to the upper plate portion 13 facing the upper plate portion 13 facing the absorber main body portion 21 to deform upward (in the other direction). It is undesirable to be restricted to 10 designs. Therefore, in the present embodiment, the guide member 40 described later is used to ensure smooth deformation of the shock absorbing member 20 and to relax the restrictions on the design of the bumper cover 10 . The structure of the guide member 40 and its function during a light collision will be described in detail below.

[Guide member]
A guide member 40 shown in FIGS. 1 to 4 is a member for guiding the upper plate portion 13 (part) of the lower bumper cover 11 upward in the other direction. In this embodiment, the guide member 40 is arranged on the right side portion of the lower bumper cover 11 and protrudes toward the right side portions of the impact absorbing member 20 and the bumper reinforcement 30 (the guide member 40 is located on the lower bumper cover 11). Although it is disposed at an appropriate position such as the left side of the cover 11, only the right guide member 40 is shown in each figure). Therefore, the guide member 40 extends in the vehicle width direction while being inclined rearward along the lower bumper cover 11 when viewed from above in FIG. 3 .

As shown in FIG. 4, the guide member 40 is formed in a hat shape with an open front in a vertical cross-sectional view, and has an upper side surface 43 extending rearward on the upper side and a lower side surface 44 extending rearward on the lower side. , and an abutment surface 45 extending vertically between the upper side surface 43 and the lower side surface 44 . At the front end of the upper side surface 43 , a flat plate-shaped upper mounting portion 46 is provided that protrudes upward, and at the front end of the lower side surface 44 , a flat plate-shaped lower side mounting portion 47 that protrudes downward is provided. Between the right end surface 41 and the left end surface 42 of the guide member 40 shown in FIGS. 5 and 6, a plurality of vertical plate-like ribs LB are formed at appropriate intervals on the left and right sides. Reinforced shape.

4 to 6, the guide member 40 is arranged on the lower bumper cover 11 while facing rearward, and is arranged above the impact absorbing member 20. As shown in FIGS. . At this time, as shown in FIG. 4, the lower attachment portion 47 of the guide member 40 is applied to the back side of the upper plate portion 13 of the lower bumper cover 11 and adhered or joined, and the upper attachment portion 46 of the guide member 40 is attached to the upper bumper cover. It is applied to the back side of 15 and adhered or joined. The upper side surface 43 of the guide member 40 arranged on the lower bumper cover 11 is arranged above the bumper reinforcement 30 and gradually slopes downward toward the rear from the upper bumper cover 15 . . The lower side surface 44 extends generally linearly rearward from the upper plate portion 13 and is slightly shorter in front and rear than the upper side surface 43 . In this way, the rear end side of the guide member 40 arranged on (a part of) the upper plate portion 13 of the lower bumper cover 11 is arranged behind the upper plate portion 13 .

[Contact surface]
A contact surface 45 is arranged at the rear end (tip) of the guide member 40 shown in FIG. The contact surface 45 is an inclined surface that is inclined upward at an angle θ with respect to the front-rear direction, which is the load input direction, and gradually increases upward (in the other direction) from the rear end of the lower side surface 44 toward the rear (vehicle inner side). leaning towards The portion from the lower end of the contact surface 45 to the middle faces the upper portion of the bumper reinforcement 30 so as to be able to contact the upper end of the contact surface 45, but the upper end side of the contact surface 45 protrudes upward from the bumper reinforcement 30. , to the rear end of the upper surface 43 . Here, in this embodiment, the upper end of the upper portion 25a of the joint portion 25 covering the bumper reinforcement 30 is regarded as the end of the bumper reinforcement of the present invention in the other direction. The height position H1 of the upper end of the contact surface 45 when no load is input is set higher than the height position H0 of the upper end of the upper portion 25a of the joint portion 25 .

[Function of impact mitigation structure in case of light collision]
7 and 8, in the event of a light collision in which an obstacle collides with the front bumper 6, the load F input from the front of the vehicle to the lower bumper cover 11 is transferred to the impact absorbing member 20 as described above. is compressed and deformed in the front-rear direction, which is the direction of load input. At this time, the front wall portion 22 of the absorber main body portion 21 receives pressure from the lower bumper cover 11 (front plate portion 12), and is compressed and deformed so as to be pushed rearward. In the process of compressive deformation of the absorber main body 21, as described above, the upper wall 23 and the lower wall 24 are vertically deformed away from each other. At this time, the downward deformation of the lower wall portion 24 of the absorber main body portion 21 is smoothly performed because an appropriate gap C1 is secured between it and the lower bumper cover 11 (lower plate portion 14). On the other hand, upward deformation of the upper wall portion 23 of the absorber main body portion 21 may not be performed smoothly because the gap C2 between the lower bumper cover 11 and the upper plate portion 13 is relatively small. There is

Therefore, in the front bumper 6 (impact absorbing structure 4) shown in FIG. A guide member 40 is provided to guide the plate portion 13 upward so as to separate the plate portion 13 from the absorber main body portion 21 . In this embodiment, the guide member 40 guides the upper plate portion 13 of the lower bumper cover 11 upward in the other direction, thereby avoiding interference with the upper wall portion 23 of the absorber body portion 21 as much as possible. . Therefore, the operation of the guide member 40 at the time of a light collision will be described in detail below.

[Function of guide member]
Referring to FIG. 7, when the lower bumper cover 11 receiving the load F moves rearward, the guide member 40 provided on the lower bumper cover 11 moves rearward. Since the contact surface 45 of the guide member 40 is located behind the front plate portion 12 of the lower bumper cover 11, it contacts the upper portion of the bumper reinforcement 30 (the upper portion 25a of the joint portion 25) first. The contact surface 45 extends rearward while being inclined upward at an angle θ with respect to the load input direction (front-rear direction), and protrudes above the bumper reinforcement 30 . Therefore, when the guide member 40 moves backward, the bumper reinforcement 30 is pressed against the inclined portion of the contact surface 45 , and the force applied to the inclined portion of the contact surface 45 at that time is applied to the contact surface 45 . It acts so as to push up the guide member 40 . Therefore, as shown in FIG. 8, the guide member 40 moves so as to run up against the bumper reinforcement 30 and is pushed upward.

Then, as shown in FIG. 8, the guide member 40 is pushed upward, so that the upper plate portion 13 of the lower bumper cover 11 on which the guide member 40 is arranged is moved upward so as to be separated from the absorber main body portion 21. can lead. At this time, the guide member 40 provided on the lower bumper cover 11 can smoothly move upward relative to the shock absorbing member 20 provided on the bumper reinforcement 30 . Therefore, the upper wall portion 23 of the absorber main body portion 21 can smoothly deform upward without interfering with the upper plate portion 13 and the guide member 40 as much as possible. When the upper wall portion 23 of the absorber main body portion 21 deforms upward in this way, the upper plate portion 13 of the lower bumper cover 11 facing the upper wall portion 23 is guided upward by the guide member 40, so that the gap C2 between them is maintained. can be maintained as much as possible. Therefore, in the present embodiment, the upper plate portion 13 interferes with the absorber main body portion 21 and an excessive load is applied thereto, and the absorber main body portion 21 can be deformed smoothly.

[Avoid bottoming of lower bumper cover]
By the way, in the above configuration, it should be avoided as much as possible that the lower bumper cover 11 collides with the bumper reinforcement 30 and stops (bottoms out) during compression deformation of the absorber main body 21 shown in FIGS. . That is, if the upper plate portion 13 of the lower bumper cover 11 bottoms out at an early stage, compressive deformation of the absorber main body portion 21 is hindered midway, and there is a risk that the deformation stroke cannot be properly ensured. Such bottoming of the lower bumper cover 11 occurs when the upper plate portion 13 or the attached member, which is a part thereof, excessively protrudes rearward due to overlapping arrangement of the attached members (multiple structure). It is assumed that it is more likely to occur. Therefore, in the configuration of the present embodiment, the contact surface 45 of the guide member 40 is brought into contact with the bumper reinforcement 30 first as described above, and a part of the lower bumper cover 11 (upper plate portion 13 and the like) deviates from the bumper reinforcement 30. It is supposed to lead to the upper side as follows. While the absorber main body 21 is compressed and deformed in this way, a part of the lower bumper cover 11 is guided upward by the guide member 40 so as to deviate from the bumper reinforcement 30, so that unintended bottoming can be avoided as much as possible. . Therefore, according to this embodiment, the deformation stroke of the impact absorbing member 20 can be ensured more reliably, and the lower bumper cover 11 can have a multi-layered structure, thereby providing a high degree of freedom in design selection. ing.

As described above, in the shock absorbing structure 4 of this embodiment, the guide member 40 guides the portion (13) of the exterior member (10) in the other direction to prevent interference with the portion (23) of the shock absorbing member 20. By avoiding this as much as possible, it becomes possible to ensure smooth deformation of the shock absorbing member 20 . In this embodiment, the design of the exterior member (10) can be set without being influenced by the deformation of the impact absorbing member 20 in the other direction, so that the design of the exterior member (10) can be relaxed. becomes. In particular, the shock absorbing structure 4 of the present embodiment includes a bumper cover 10 (exterior member), a shock absorbing member 20, and a bumper reinforcement 30 (vehicle member) so as to constitute the front bumper 6, and the shock absorbing member 20 is A part (upper wall portion 23) is deformed upward in the process of being compressed and deformed in the front-rear direction. Therefore, in the present embodiment, the guide member 40 is arranged on the upper plate portion 13 of the bumper cover 10 so as to correspond to the upward deformation of the shock absorbing member 20, and is arranged above the shock absorbing member 20. there is The contact surface 45 of the guide member 40 is pressed against the bumper reinforcement 30 by the load applied to the bumper cover 10, and the inclined contact surface 45 moves the guide member 40 upward. The upper plate portion 13 of the lower bumper cover 11 provided with 40 can be guided upward. Therefore, according to this embodiment, it is possible to relax the restrictions on the design of the lower bumper cover 11 while ensuring smooth deformation of the impact absorbing member 20 .

Furthermore, in the present embodiment, the part (13) of the exterior member (10) is guided in the other direction by the guide member (40) so as to deviate from the vehicle body member (30), so that the part (13) of the exterior member (10) However, it is possible to avoid as much as possible the situation in which the impact absorbing member 20 hits the vehicle body member (30) and stops during compression deformation. Further, in this embodiment, the guide member 40 and the shock absorbing member 20 are arranged separately in the exterior member (10) and the vehicle body member (30) so that they can move relative to each other. By doing so, the part (13) of the exterior member (10) can be more appropriately moved in the other direction with respect to the shock absorbing member 20 by the guide member 40. Especially in this embodiment, since the guide member 40 moves in the other direction with respect to the impact absorbing member 20 together with the part (13) of the exterior member (10), the smooth deformation of the impact absorbing member 20 is more appropriately ensured. can do.

The shock absorbing structure 4 of this embodiment is not limited to the embodiment described above, and can take various other embodiments. In the present embodiment, the lower bumper cover 11 is used as an example to illustrate the configuration (shape, size, arrangement position, etc.) of the exterior member, but the configuration of the exterior member is not intended to be limited. For example, if the lower bumper cover is used as an exterior member, it can be assumed that the upper plate, lower plate, and various attached members are part of it, and the parts located at the ends in the vehicle width direction (left and right ends) are assumed. It can also be assumed as part of it. For example, when the front bumper is formed in a U shape when viewed from above and the left and right sides are bent rearward, the left and right sides of the lower bumper cover are positioned on the right or left side of the vehicle. In such a case, the guide member can be arranged on the right or left side of the lower bumper cover, and the shock absorbing member is compressed and deformed in the lateral direction, which is the load input direction. Also, the shape and dimensions of the impact absorbing member can be changed as appropriate, and when it is arranged on the front bumper 6, the shape can be set so that a portion of the member is deformed either upward or downward. In addition to the case where the impact absorbing member is provided on substantially the entire vehicle body member, it is also possible to provide the shock absorbing member on only a portion of the vehicle body member.

Further, in this embodiment, the configuration of the guide member 40 of the front bumper 6 has been exemplified as an example, but the configuration of the guide member is not intended to be limited. For example, when the guide member is provided on the front bumper, the guide member can be arranged on at least one of the upper side and the lower side of the shock absorbing member so as to correspond to the deformation of the shock absorbing member in the other direction. When the guide member is provided below the impact absorbing member, for example, the guide member shown in FIG. 4 may be arranged upside down on the lower bumper cover, and the lower plate portion thereof may be guided downward. can. Alternatively, the guide member may be arranged on the vehicle body member, and the impact absorbing member may be arranged on the exterior member. When the guide member is arranged on the vehicle body member, for example, the guide member shown in FIG. 4 can be arranged on the upper end side of the bumper reinforcement or the like by turning it upside down and front to back. Also, the arrangement position of the guide member can be appropriately set, and for example, it can be arranged over the entire width or part of the bumper cover shown in FIG. The guide member can be formed using a part of the lower bumper cover or the like. Further, the contact surface may be linearly inclined, or may be inclined while being curved. The shock absorbing structure of this embodiment can be provided at an appropriate position of the vehicle where a light collision is assumed, and various members fixed inside the vehicle can be used as vehicle members.

2 vehicle 4 shock absorbing structure 6 front bumper 10 bumper cover (exterior member of the present invention)
11 lower bumper cover 12 front plate portion 13 upper plate portion (a part of the exterior member of the present invention)
13E Upper plate rear end 14 Lower plate 15 Upper bumper cover 20 Impact absorbing member 21 Absorber main body 22 Front wall 23 Upper wall (a part of the impact absorbing member of the present invention)
23L Upper fold line 24 Lower wall portion 24L Lower fold line 25 Joint portion 25a Joint upper portion 25b Joint lower portion 30 Bumper reinforcement (body member of the present invention)
40 Guide member 41 Right end surface 42 Left end surface 43 Upper side surface 44 Lower side surface 45 Contact surface 46 Upper mounting portion 47 Lower mounting portion LB Rib

Claims (5)

A shock absorbing structure for a vehicle in which a shock absorbing member disposed inside the vehicle absorbs a load input to an exterior member by compressing and deforming in the load input direction,
When a part of the shock absorbing member deforms in a direction different from the load input direction in the process of compressive deformation, the part of the exterior member facing it is separated from the shock absorbing member. A shock absorbing structure for a vehicle provided with a guide member for guiding in a direction. A part of the exterior member is arranged to face a vehicle body member fixed inside the vehicle from a load input direction,
2. The shock absorbing structure for a vehicle according to claim 1, wherein the guide member guides a part of the exterior member in the other direction so as to deviate from the vehicle body member. A vehicle body member fixed inside the vehicle is arranged on the vehicle inner side of the exterior member so as to face from the direction of load input,
The shock absorbing member is arranged on either one of the exterior member and the vehicle body member, and the guide member is arranged on the other of the vehicle body member and the exterior member, which is different from the one. Item 3. A vehicle shock absorbing structure according to Item 1 or 2. 4. The vehicle shock absorbing structure according to claim 3, wherein the guide member is disposed on the exterior member. Bumper reinforcement as a vehicle body member fixed inside the vehicle is disposed on the vehicle inner side of the bumper cover as the exterior member so as to face from the front and back direction, which is the direction of load input,
When the shock absorbing member disposed on the bumper reinforcement is compressed and deformed in the longitudinal direction, a part of the shock absorbing member is configured to deform in at least one of upward and downward directions,
The guide member arranged on a part of the bumper cover is arranged on at least one side of an upper side and a lower side in the other direction with respect to the shock absorbing member,
A contact surface capable of coming into contact with the bumper reinforcement is formed at the front end of the guide member on the vehicle inner side, and the contact surface extends rearward while being inclined in the other direction with respect to the load input direction, The shock absorbing structure for a vehicle according to any one of claims 1 to 4, wherein the bumper reinforcement is arranged so as to protrude from the other end side of the bumper reinforcement.

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