JP2004189171A - Bumper structure for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a bumper structure for a vehicle, capable of reducing a repair cost in low speed collision, improving the energy absorbing efficiency in high speed collision, and reducing the load input to a counterpart vehicle. <P>SOLUTION: U-shaped notches 24 are formed on both end parts in the longitudinal direction of a front bumper reinforcement 12. Thereby, rigidity of the end parts (edge 26A) in the longitudinal direction of the front bumper reinforcement 12 to the forward and backward directions of the vehicle is reduced. In the low speed collision, a notch front part 26 is deformed to the side of a notch rear part 28 to perform energy absorption, so that deformation of a front bumper arm 16 and so on does not occur. Therefore, only the exchange of the reinforcement 12 is necessary. In the high speed collision, the energy absorbing efficiency can be improved by performing the energy absorption, and the load input to the counterpart vehicle is reduced by the amount of the reduced rigidity. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle bumper structure in which a bumper reinforcement and a pair of side members are connected by a pair of bumper stays.
[0002]
[Prior art]
FIG. 6A discloses a conventional front bumper structure. As shown in the figure, a front bumper 100 includes a front bumper cover 102 disposed with the vehicle width direction as a longitudinal direction, a long front bumper reinforcement 104 disposed inside the front bumper cover 102, and a lower part of an engine room. It is constituted by a pair of front bumper arms 108 that connect the front ends of a pair of front side members 106 arranged on both sides with the vehicle front-rear direction as a longitudinal direction and both ends of the front bumper reinforcement 104.
[0003]
[Patent Document 1]
JP-A-7-186849
[Patent Document 2]
Japanese Utility Model Application Laid-Open No. 4-128951
[0004]
[Problems to be solved by the invention]
In the case of the above-mentioned front bumper structure, the following problems occur.
[0005]
FIG. 6B illustrates a state where the vehicle collides at a low speed from diagonally forward (in the direction of arrow P). As shown in this figure, when the vehicle collides at a low speed from diagonally forward, the ends of the front bumper cover 102 and the front bumper reinforcement 104 are bent inward and the front bumper arm 108 also buckles in the vehicle front-rear direction. Energy absorption at the time of collision is performed in a series of these deformation processes. However, since the front bumper cover 102, the front bumper reinforcement 104, and the front bumper arm 108 are deformed, these parts must be replaced at the time of repair. If the front side member 106 is deformed, the front side member 106 also needs to be replaced. Therefore, there is a problem that the burden of the repair cost on the user increases (first problem).
[0006]
In addition, if the cross section of the front bumper reinforcement 104 is made thinner, it is possible to prevent the front bumper cover 102 from being damaged such as whitening at the time of a low-speed collision from an oblique front, to some extent. At the time of low-speed collision from the front, the front bumper reinforcement 104 alone cannot sufficiently absorb energy, which is not preferable because the amount of deformation of the front bumper arm 108 increases. In addition, since the front bumper reinforcement 104 is a member that connects the front side members 106 on both sides, it is preferable from the viewpoint that a thinner cross section significantly reduces the body rigidity and further reduces the steering stability. Absent.
[0007]
On the other hand, FIG. 6C illustrates a state when the vehicle collides at a high speed from the front (in the direction of arrow Q). As shown in this figure, in the case of a high-speed collision, the end of the front bumper reinforcement 104 is deformed to a substantially flat state, and at this time, the edge 104A of the end of the front bumper reinforcement 104 is moved forward. Since the edge 104A has a high rigidity, the energy absorption amount decreases as the rigidity of the edge 104A increases, and at the same time, the load input amount from the edge 104A to the colliding body (the opponent vehicle in the case of a frontal collision between vehicles). There is a problem of increasing (second problem).
[0008]
As a result of conducting a prior art search based on the above problems, Patent Literature 1 divides the front bumper reinforcement into a center beam portion and a corner beam portion as an effective technology for the first problem, and Although a technique has been disclosed in which either one may be replaced, the number of steps is increased by the division into a plurality of elements, and there is no effect on the second problem. The same applies to Patent Document 2.
[0009]
In consideration of the above facts, the present invention can reduce the repair cost at the time of a low-speed collision, and can increase the energy absorption efficiency at the time of a high-speed collision and reduce the load input to the other vehicle. The purpose is to obtain a bumper structure.
[0010]
[Means for Solving the Problems]
The bumper structure for a vehicle according to the first aspect of the present invention includes a bumper reinforcement disposed inside the bumper cover along the longitudinal direction of the bumper, and a pair of bumpers disposed on both sides of the vehicle body with the longitudinal direction of the vehicle extending in the vehicle longitudinal direction. And a pair of bumper arms that couples the tip of the side member and the vicinity of the end of the bumper reinforcement, and a bumper structure for a vehicle, comprising: The rigidity reduction portion for reducing the rigidity of the edge on the bumper cover side at the end in the longitudinal direction is integrally formed.
[0011]
A bumper structure for a vehicle according to the present invention according to claim 2 is a bumper reinforcement arranged inside the bumper cover along the longitudinal direction of the bumper, and a pair of bumpers arranged on both sides of the vehicle body with the longitudinal direction of the vehicle front and rear. And a pair of bumper arms that couples the tip of the side member and the vicinity of the end of the bumper reinforcement, and a bumper structure for a vehicle, comprising: An energy absorbing member that covers an edge on the bumper cover side at an end in the longitudinal direction is provided separately from the bumper reinforcement.
[0012]
A bumper structure for a vehicle according to a third aspect of the present invention includes a bumper reinforcement disposed inside the bumper cover along the longitudinal direction of the bumper, and a pair of bumpers disposed on both sides of the vehicle body with the longitudinal direction of the vehicle extending in the vehicle longitudinal direction. And a pair of bumper arms for joining the tip of the side member and the vicinity of the end of the bumper reinforcement, and a longitudinal end of the bumper reinforcement at the bumper cover. An energy absorbing member capable of covering the edge of the longitudinal end is provided separately from the bumper cover at a portion facing the edge of the portion.
[0013]
According to the first aspect of the present invention, when a collision occurs at a low speed from an oblique direction, the collision load at that time is input from the bumper cover to the longitudinal end of the bumper reinforcement. Here, in the present invention, since the rigidity reduction portion for reducing the rigidity of the edge on the bumper cover side is formed integrally with the longitudinal end of the bumper reinforcement, a collision load is input to the longitudinal end. Then, the end in the longitudinal direction is easily deformed in the load input direction. Since energy is absorbed in this deformation process, it is possible to avoid deformation of the bumper arm during a low-speed collision (it does not lead to deformation of the bumper arm). Further, since the longitudinal end of the bumper reinforcement is easily deformed, a strong reaction force is not input to the bumper cover from the edge of the longitudinal end, so that the bumper cover is damaged by whitening or the like. Does not occur. Therefore, only the bumper reinforcement needs to be replaced at the time of repair, and the repair cost can be reduced.
[0014]
On the other hand, in the case of a high-speed collision from the front or a high-speed collision from the back, the collision load at that time is input to the bumper reinforcement via the bumper cover. At this time, a predetermined energy absorption is performed by deforming the rigidity reducing portion integrally formed at the longitudinal end of the bumper reinforcement in the load input direction. This energy absorption amount is larger than that of the configuration in which the rigidity reduction portion is not provided at the longitudinal end of the bumper reinforcement, and therefore, the energy absorption efficiency at the time of a high-speed collision increases. Moreover, since the longitudinal end of the bumper reinforcement is deformed in the load input direction by the rigidity reducing portion, when the collision object is a vehicle, the edge of the longitudinal end of the bumper reinforcement is moved from the edge of the longitudinal end of the bumper reinforcement to the other vehicle. Less input load is required.
[0015]
According to the second aspect of the present invention, when a collision occurs at a low speed from an oblique direction, the collision load at that time is input from the bumper cover to the longitudinal end of the bumper reinforcement. Here, in the present invention, the energy absorbing member that covers the edge on the bumper cover side at the longitudinal end of the bumper reinforcement is provided separately from the bumper reinforcement at the longitudinal end of the bumper reinforcement. When a collision load is input to the end in the direction, the energy absorbing member is deformed. Since energy is absorbed during this deformation process, the deformation of the bumper arm can be avoided during a low-speed collision. Also, since no strong reaction force is input to the bumper cover from the edge of the longitudinal end of the bumper reinforcement, no damage such as whitening occurs on the bumper cover. Therefore, only the bumper reinforcement needs to be replaced at the time of repair, and the repair cost can be reduced.
[0016]
On the other hand, in the case of a high-speed collision from the front or a high-speed collision from the back, the collision load at that time is input to the bumper reinforcement via the bumper cover. At this time, predetermined energy absorption is performed by the energy absorbing member provided separately at the longitudinal end of the bumper reinforcement deforming in the load input direction. This energy absorption amount is larger than the configuration in which the energy absorbing member is not provided at the longitudinal end of the bumper reinforcement, so that the energy absorption efficiency at the time of high-speed collision increases. In addition, since the energy absorbing member provided at the longitudinal end of the bumper reinforcement covers the edge of the longitudinal end, when the collision object is a vehicle, the longitudinal end of the bumper reinforcement is covered. The load input to the other vehicle from the edge of the vehicle can be reduced.
[0017]
According to the third aspect of the present invention, when a collision occurs at a low speed from an oblique direction, the collision load at that time is input from the bumper cover to the longitudinal end of the bumper reinforcement. Here, in the present invention, an energy absorbing member capable of covering the edge of the longitudinal end of the bumper reinforcement is provided separately from the bumper cover at a portion facing the edge of the longitudinal end of the bumper reinforcement in the bumper cover. The energy absorbing member is deformed when a collision load is input to the longitudinal end of the bumper cover from an oblique direction. Since energy is absorbed during this deformation process, the deformation of the bumper arm can be avoided during a low-speed collision. Also, since no strong reaction force is input to the bumper cover from the edge of the longitudinal end of the bumper reinforcement, no damage such as whitening occurs on the bumper cover. Therefore, only the bumper reinforcement needs to be replaced at the time of repair, and the repair cost can be reduced.
[0018]
On the other hand, in the case of a high-speed collision from the front or a high-speed collision from the back, the collision load at that time is input to the bumper reinforcement via the bumper cover. At this time, a predetermined energy absorption is performed by the energy absorbing member separately provided in a portion of the bumper cover facing the edge of the longitudinal end of the bumper reinforcement deforming in the load input direction. This amount of energy absorption is larger than that in a configuration in which an energy absorbing member is not provided in a portion of the bumper cover facing the edge, so that the energy absorption efficiency at the time of a high-speed collision is increased. Moreover, since the edge of the longitudinal end of the bumper reinforcement is covered by the energy absorbing member provided at the longitudinal end of the bumper cover, when the collision object is a vehicle, the longitudinal direction of the bumper reinforcement is reduced. The load applied to the other vehicle from the edge of the end can be reduced.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
[First Embodiment]
Hereinafter, a first embodiment of a vehicle bumper structure according to the present invention will be described with reference to FIGS. 1 and 2. Note that an arrow FR appropriately shown in these drawings indicates a vehicle front side, and an arrow IN indicates an indoor side in the vehicle width direction.
[0020]
FIG. 1 shows a plan view of a front bumper structure according to the present embodiment. As shown in the figure, inside the front bumper cover 10, a front bumper reinforcement 12 having a long and hollow rectangular cross section is disposed along the longitudinal direction of the front bumper cover 10 (vehicle width direction). Have been. The front bumper cover 10 is supported by a front bumper reinforcement 12. The front bumper reinforcement 12 is formed by extrusion using an aluminum alloy. In addition, both ends in the longitudinal direction of the front bumper reinforcement 12 are bent toward the vehicle rear side in consideration of a collision (oblique collision) from an oblique front.
[0021]
On the other hand, a pair of elongated front side members 14 are disposed on both lower sides of the engine room, with the longitudinal direction being the vehicle longitudinal direction. The front ends of the pair of front side members 14 and the vicinity of both ends in the longitudinal direction of the front bumper reinforcement 12 are connected to each other by a front bumper arm 16 having a hollow rectangular cross section whose longitudinal direction is the vehicle longitudinal direction. Note that the bolts 18 and nuts (including weld nuts) 20 may be used for connection of the respective parts, or spot welding may be used. In addition, a plurality of beads 22 extending in the arm width direction are formed at predetermined intervals at the corners of the front bumper arm 16 to regulate (control) a buckling load in response to a load input from the front side of the vehicle.
[0022]
Here, notches 24 as “stiffness lowering portions” formed in a substantially U-shape in a horizontal direction in plan view are provided at both ends in the longitudinal direction of the front bumper reinforcement 12 described above. Thereby, the longitudinal end of the front bumper reinforcement 12 is divided into a notch front portion 26 and a notch rear portion 28 each having a narrow width with the notch 24 interposed therebetween. Further, since the notch 24 is formed, the rigidity of the longitudinal end of the front bumper reinforcement 12 in the vehicle front-rear direction is reduced, and in particular, the edge of the notch front portion 26 located on the vehicle front side ( The rigidity of the edge (26A) facing the front bumper cover 10 is intentionally set low.
[0023]
Next, the operation and effect of the present embodiment will be described.
[0024]
The state shown in FIG. 2A is an assembled state of the front bumper. In this state, as shown in FIG. 2 (B), when the vehicle collides at a low speed from an oblique front side (the direction of the arrow P), the collision load from the collision body 30 at that time is reduced from the front bumper cover 10 to the front bumper reinforcement 12. Is input to the end in the longitudinal direction.
[0025]
Here, in the present embodiment, a notch 24 formed in a substantially U-shape in a horizontal direction in plan view is provided at an end of the front bumper reinforcement 12 in the longitudinal direction, and the rigidity of the edge 26A of the notch front portion 26 is reduced. Therefore, when a collision load is input from the front bumper cover 10 to the notch front portion 26, the notch front portion 26 is easily deformed (deformed so as to be round) in the load input direction (the direction of the arrow P). Since energy is absorbed in this deformation process, the front bumper arm 16 can be prevented from being deformed during a low-speed collision (that is, the front bumper arm 16 is not deformed). Further, since no strong reaction force is input to the front bumper cover 10 from the edge 26A of the notch front portion 26 of the front bumper reinforcement 12, no damage such as whitening occurs on the front bumper cover 10. Therefore, at the time of repair, only the front bumper reinforcement 12 needs to be replaced, and the repair cost can be greatly reduced.
[0026]
On the other hand, as shown in FIG. 2C, when a high-speed collision occurs from the front (in the direction of the arrow Q), the collision load from the collision body 32 at that time is transmitted via the front bumper cover 10 to the front bumper reinforcement. Is input to the comment 12. At the time of a high-speed collision, the collision body 32 itself enters the engine room while deforming. At this time, the front notch 26 formed at the longitudinal end of the front bumper reinforcement 12 is deformed toward the rear notch 28, and the front bumper arm 16 and the front side member 14 also buckle toward the vehicle rear side. In the process of deforming these members, a predetermined energy is absorbed. This energy absorption amount is larger than the configuration in which the notch 24 is not provided at the longitudinal end of the front bumper reinforcement 12 as in the present embodiment, so that the energy absorption efficiency at the time of a high-speed collision is high. Become.
[0027]
In addition, the rigidity of the front bumper reinforcement 12 in the longitudinal direction is reduced due to the formation of the notch 24, so that the front notch 26 is deformed toward the rear notch 28. Therefore, when the collision body 32 is a vehicle, the load input to the collision body 32 (that is, the opponent vehicle) from the edge 26A of the notch front portion 26 at the longitudinal end of the front bumper reinforcement 12 is also small. Do it.
[0028]
Generally speaking, according to the front bumper structure according to the present embodiment, it is possible to reduce the repair cost at the time of a low-speed collision, to improve the energy absorption efficiency at the time of a high-speed collision, and to input a load to the other vehicle. Can be reduced.
[0029]
In addition, in the case of the front bumper structure according to the present embodiment, a rigidity-reducing portion is established by forming laterally substantially U-shaped notches 24 in plan view at both ends in the longitudinal direction of the front bumper reinforcement 12. Therefore, the number of parts does not increase. Therefore, the structure can be simplified. Further, since the number of parts does not increase, the number of assembling steps does not increase and the cost does not increase.
[0030]
The shape of the cutouts 24 formed at both ends in the longitudinal direction of the front bumper reinforcement 12 described above is adjusted according to the rigidity of the front bumper reinforcement 12. For example, when the rigidity of the front bumper reinforcement 12 is high, it is more effective to increase the notch amount.
[0031]
[Second embodiment]
Next, a second embodiment of the vehicle bumper structure according to the present invention will be described with reference to FIGS. Note that the same components as those in the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted.
[0032]
In the embodiment shown in FIG. 3, a plate-shaped energy absorbing member (protector) 40 formed as a separate component is provided on a front side of both ends in the longitudinal direction of the front bumper reinforcement 12 with a fastener (a rivet or the like) not shown. Installed by. The tip portion 40A of the energy absorbing member 40 extends further outward from the longitudinal end of the front bumper reinforcement 12, and is interposed between the longitudinal end and the front bumper cover 10. Therefore, the edge 12 </ b> A at the longitudinal end of the front bumper reinforcement 12 is covered with the energy absorbing member 40.
[0033]
The embodiment shown in FIG. 4 is basically the same as the embodiment shown in FIG. 3, but in the embodiment shown in FIG. 3, the front bumper whose longitudinal ends are bent toward the vehicle rear side. In contrast to the use of the reinforcement 12, the embodiment shown in FIG. 4 uses a linear front bumper reinforcement 42 whose longitudinal ends are not bent rearward of the vehicle.
[0034]
Next, the operation and effect of the present embodiment will be described.
[0035]
In the case of a low-speed collision from diagonally forward, the collision load at that time is input from the front bumper cover 10 to the longitudinal ends of the front bumper reinforcements 12 and 42. Here, in the present embodiment, an energy absorbing member 40 that covers the edges 26A, 12A on the front bumper cover side at the longitudinal ends of the front bumper reinforcements 12, 42 is attached to the longitudinal ends of the front bumper reinforcements 12, 42. Since they are provided separately from 12 and 42, when a collision load is input to the end in the longitudinal direction, the energy absorbing member 40 is deformed in the load input direction. Since energy is absorbed in this deformation process, the deformation of the front bumper arm 16 during a low-speed collision can be avoided. In addition, since the energy absorbing member 40 is deformed so as to wrap the edges 12A, 42A of the longitudinal ends of the front bumper reinforcements 12, 42, a strong reaction force is input from the edges 12A, 42A to the front bumper cover 10. Never even. Therefore, damage such as whitening does not occur on the front bumper cover 10. Therefore, at the time of repair, only the front bumper reinforcements 12 and 42 need to be replaced, and the repair cost can be reduced.
[0036]
On the other hand, when a high-speed collision occurs from the front, the collision load at that time is input to the front bumper reinforcements 12 and 42 via the front bumper cover 10. At this time, predetermined energy absorption is performed by the energy absorbing member 40 separately provided at the longitudinal ends of the front bumper reinforcements 12 and 42 deforming in the load input direction. This energy absorption amount is larger than the configuration in which the energy absorbing member 40 is not provided at the longitudinal ends of the front bumper reinforcements 12 and 42, so that the energy absorption efficiency at the time of a high-speed collision is increased.
[0037]
Moreover, since the edges 12A and 42A at the longitudinal ends are covered by the energy absorbing members 40 provided at the longitudinal ends of the front bumper reinforcements 12 and 42, when the collision body 32 is a vehicle, The load input to the other vehicle from the edges 26A, 12A at the longitudinal ends of the front bumper reinforcements 12, 42 can be reduced.
[0038]
Generally speaking, the front bumper structure according to this embodiment can also reduce the repair cost at the time of a low-speed collision and increase the energy absorption efficiency at the time of a high-speed collision, as in the first embodiment described above. It is possible to reduce the load input to the vehicle of the other party.
[0039]
[Third embodiment]
Next, a third embodiment of the vehicle bumper structure according to the present invention will be described with reference to FIG. The same components as those in the first and second embodiments described above are denoted by the same reference numerals, and description thereof will be omitted.
[0040]
In the embodiment shown in FIG. 5, a plate-shaped energy absorbing member 50 is attached to a portion of the front bumper cover 10 that faces the longitudinal end of the front bumper reinforcement 12. Therefore, the energy absorbing member 50 is interposed between the front bumper cover 10 and the longitudinal end of the front bumper reinforcement 12, and substantially covers the edge 12A of the longitudinal end.
[0041]
Next, the operation and effect of the present embodiment will be described.
[0042]
In the case of a low-speed collision from diagonally forward, the collision load at that time is input from the front bumper cover 10 to the longitudinal end of the front bumper reinforcement 12. Here, in the present embodiment, an energy absorbing member 50 that substantially covers the edge 12A of the longitudinal end is provided on the front bumper cover 10 at a position facing the longitudinal end of the front bumper reinforcement 12. Since it is provided separately from the bumper cover 10, when a collision load is input to the longitudinal end of the front bumper cover 10 from diagonally forward, the energy absorbing member 50 is deformed in the load input direction. Since energy is absorbed in this deformation process, the deformation of the front bumper arm 16 during a low-speed collision can be avoided. Further, since the energy absorbing member 50 is interposed, a strong reaction force is not input to the front bumper cover 10 from the edge 12A at the longitudinal end of the front bumper reinforcement 12, so that the front bumper cover 10 is whitened. No damage such as Therefore, at the time of repair, only the front bumper reinforcement 12 needs to be replaced, and the repair cost can be reduced.
[0043]
On the other hand, in the case of a high-speed collision from the front, the collision load at that time is input to the front bumper reinforcement 12 via the front bumper cover 10. At this time, when the energy absorbing member 50 separately provided in a portion of the front bumper cover 10 facing the edge 12A of the longitudinal end of the front bumper reinforcement 12 is deformed in the load input direction, a predetermined energy absorption is performed. Is made. This amount of energy absorption is larger than that in a configuration in which the energy absorbing member 50 is not provided in a portion of the front bumper cover 10 facing the edge 12A, so that the energy absorption efficiency during a high-speed collision is increased.
[0044]
Moreover, since the edge 12A of the longitudinal end of the front bumper reinforcement 12 is covered by the energy absorbing member 50 provided at the longitudinal end of the front bumper cover 10, when the collision body 32 is a vehicle, The load input to the other vehicle from the edge 12A at the longitudinal end of the front bumper reinforcement 12 can be reduced.
[0045]
Generally speaking, the front bumper structure according to the present embodiment can also reduce the repair cost at the time of a low-speed collision and reduce the energy absorption efficiency at the time of a high-speed collision, as in the first and second embodiments described above. As a result, the load input to the other vehicle can be reduced.
[0046]
In each of the embodiments described above, the present invention is applied to the front bumper. However, the present invention is not limited to this, and the present invention may be applied to the rear bumper.
[0047]
Further, in each of the above-described embodiments, the front bumper reinforcements 12 and 42 are formed of an extruded product of an aluminum alloy. However, the present invention is not limited thereto, and the front bumper reinforcements formed by pressing a steel plate may be used. May be.
[0048]
Furthermore, in the above-described first embodiment, the configuration in which the notch 24 is formed at the longitudinal end of the front bumper reinforcement 12 is employed. However, the present invention is not limited to this, and the rigidity of the edge 26A facing the front bumper cover 10 is reduced. Any configuration that can be reduced can be applied. For example, if the front bumper reinforcement is constituted by a press-formed product of a steel plate, a bead due to unevenness may be set in a portion where the notch 24 is formed. Further, instead of the notch 24, a method of setting a defective portion such as a slit or a hole may be adopted.
[0049]
【The invention's effect】
As described above, the vehicle bumper structure according to the first aspect of the present invention has a rigidity that reduces the rigidity of the edge of the bumper cover at the longitudinal end of the bumper reinforcement at the longitudinal end. Since the lowered part is formed integrally, it is possible to reduce the repair cost at the time of low-speed collision, improve the energy absorption efficiency at the time of high-speed collision, and reduce the load input to the opponent's vehicle Has the effect.
[0050]
In the vehicle bumper structure according to the second aspect of the present invention, an energy absorbing member that covers an edge on the bumper cover side at the longitudinal end of the bumper reinforcement is separate from the bumper reinforcement at the longitudinal end of the bumper reinforcement. Since it is provided by the body, it is possible to reduce the repair cost at the time of low-speed collision, improve the energy absorption efficiency at the time of high-speed collision, and reduce the load input to the opponent's vehicle. Have.
[0051]
In the bumper structure for a vehicle according to the third aspect of the present invention, a portion of the bumper cover facing the edge of the longitudinal end of the bumper reinforcement can cover the edge of the longitudinal end. Since the absorbing member is provided separately from the bumper cover, repair costs during low-speed collisions can be reduced, and energy absorption efficiency during high-speed collisions can be increased, and load input to the opponent's vehicle is reduced. It has an excellent effect that it can be performed.
[Brief description of the drawings]
FIG. 1 is a plan view showing an entire configuration of a front bumper structure according to a first embodiment.
FIGS. 2A and 2B are explanatory diagrams for explaining an effect when the front bumper structure shown in FIG. 1 is adopted, wherein FIG. 2A shows an assembled state, FIG. 2B shows a low-speed collision, and FIG. It is a top view at the time.
FIG. 3 is a plan view corresponding to FIG. 1 showing a front bumper structure (an energy absorbing member is set in a front bumper reinforcement whose both ends in the longitudinal direction are bent rearward of the vehicle) according to a second embodiment.
FIG. 4 is a plan view corresponding to FIG. 3, showing a front bumper structure (an energy absorbing member is set in a linear front bumper reinforcement) according to a second embodiment.
FIG. 5 is a plan view corresponding to FIG. 1 showing a front bumper structure (an energy absorbing member is set on both sides on the back surface of a front bumper cover) according to a third embodiment.
FIG. 6 is an explanatory view corresponding to FIG. 2 for describing a problem of the conventional front bumper structure.
[Explanation of symbols]
10 Front bumper cover
12 Front bumper reinforcement
12A edge
14 Front side member
16 Front bumper arm
24 Notch (rigidity reduction part)
26A Edge
40 Energy absorbing member
42 Front bumper reinforcement
50 Energy absorbing members

Claims (3)

A bumper reinforcement arranged inside the bumper cover along the longitudinal direction of the bumper, and a pair of side members arranged on both sides of the vehicle body with the longitudinal direction of the vehicle front and rear and near the end of the bumper reinforcement. And a pair of bumper arms, and a vehicle bumper structure comprising:
At the longitudinal end of the bumper reinforcement, a rigidity reducing portion for reducing rigidity of an edge on the bumper cover side at the longitudinal end is integrally formed.
A bumper structure for a vehicle. A bumper reinforcement arranged inside the bumper cover along the longitudinal direction of the bumper, and a pair of side members arranged on both sides of the vehicle body with the longitudinal direction of the vehicle front and rear and near the end of the bumper reinforcement. And a pair of bumper arms, and a vehicle bumper structure comprising:
At the longitudinal end of the bumper reinforcement, an energy absorbing member that covers an edge on the bumper cover side at the longitudinal end is provided separately from the bumper reinforcement.
A bumper structure for a vehicle. A bumper reinforcement arranged inside the bumper cover along the longitudinal direction of the bumper, and a pair of side members arranged on both sides of the vehicle body with the longitudinal direction of the vehicle front and rear and near the end of the bumper reinforcement. And a pair of bumper arms, and a vehicle bumper structure comprising:
An energy absorbing member capable of covering the edge of the longitudinal end of the bumper cover is provided separately from the bumper cover at a portion of the bumper cover facing the edge of the longitudinal end of the bumper reinforcement,
A bumper structure for a vehicle.

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