Vehicle body end structure

Abstract

To provide a vehicle body end structure capable of efficiently keeping a vehicle body away from a barrier in a small overlap collision.SOLUTION: A vehicle body end structure 1 for transmitting a collision load to a vehicle body includes: a long bumper reinforcement 2 disposed at an end in a longitudinal direction of the vehicle body and extending in a vehicle width direction; a side member 3 disposed inside the bumper reinforcement 2 in the longitudinal direction of the vehicle body and extending in the longitudinal direction of the vehicle body; and a suspension member 4 disposed on the lower side of the side member 3. A deformation part 6 extending outward in a vehicle cross direction from the side member 3 is provided at an end part 2b in the longitudinal direction of the bumper reinforcement 2, and a column body 7 extending downward so as to be connected to the suspension member 4 is provided on an outside surface in the vehicle cross direction of the side member 3. The deformation part 6 is deformed in the collision direction by receiving the collision load, and abuts on the vertical column body 7 so that the collision load is transmitted to the vehicle body.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a vehicle body end structure. [Background technology]

[0002] Conventionally, there are known structures that absorb collision loads and mitigate impact forces during a small overlap collision of a vehicle, and structures that transfer collision loads to the vehicle body and generate lateral forces to move the vehicle body away from a barrier. For example, Patent Document 1 discloses a vehicle front body structure that includes a pair of side members and a front bumper that connects these side members. The side members are attached with reinforcing members that extend diagonally forward. In the event of a small overlap collision, the ends of the front bumper deform and come into contact with the reinforcing members, thereby transferring the load from the barrier to the side members.

[0003] The vehicle front body structure disclosed in Patent Document 2 includes a pair of side members and a front bumper connecting these side members. Pressure-receiving portions are provided on the sides of the side members, and end members are attached to the vehicle width direction ends of the front bumper, which can come into contact with the pressure-receiving portions of the side members when the front bumper receives a collision load from the barrier and bends. In the event of a small overlap collision, the end members come into contact with the pressure-receiving portions, so that the collision load from the barrier is transmitted to the power unit via the side members. This structure can achieve improved strength and rigidity compared to the structure of Patent Document 1, in which the collision load is received only by the side members. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] U.S. Patent No. 9,567,010 [Patent Document 2] European Patent No. 2987705 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with the structure for transmitting collision loads to the vehicle body described in Patent Document 2, depending on the position at which the front bumper bends, there is a possibility that the end members will not come into contact with the pressure-receiving portions of the side members. Furthermore, from immediately after the barrier collides until the barrier, end members, and pressure-receiving portions are connected in series, the collision load is not easily transmitted, and the force generated in the lateral direction tends to be small. Therefore, there has been a demand for an improvement in the efficiency of transmission of collision loads to the vehicle body.

[0006] The present invention was devised in consideration of these points, and the problem that the present invention aims to solve is to provide a vehicle body end structure that can efficiently move the vehicle body away from the barrier in the event of a small overlap collision. [Means for solving the problem]

[0007] In order to solve the above problems, the vehicle body end structure according to the present invention takes the following measures.

[0008] The first invention of the present invention is a vehicle body end structure provided at at least one of the front and rear of the vehicle body and transmitting collision loads to the vehicle body, comprising: a long bumper reinforcement arranged at the end in the fore-and-aft direction of the vehicle body and extending in the vehicle width direction; a side member arranged inside the vehicle in the fore-and-aft direction of the vehicle body from the bumper reinforcement and extending in the fore-and-aft direction of the vehicle body; a suspension member arranged below the side member; a deformation portion extending outward in the vehicle width direction from the side member at the longitudinal end of the bumper reinforcement; and a vertical pillar attached to the vehicle width outer surface of the bumper reinforcement side end of the side member and extending downward from the side member so as to be connected to the suspension member, wherein when the deformation portion deforms in the collision direction due to a collision load, the deformation portion abuts against the vertical pillar.

[0009] The second invention of the present invention is a vehicle body end structure of the first invention, wherein the deformation portion is arranged between a crash box attached to the tip of the side member and the bumper reinforcement, and is composed of a strength member that supports the bumper reinforcement from the inside of the vehicle.

[0010] A third aspect of the present invention is a vehicle body end structure according to the first or second aspect of the present invention, wherein the vertical pillar body has a pressure-receiving surface formed on the outer side of the side member in the vehicle width direction, and the deformation portion has a contact surface formed on the inner side of the vehicle in the fore-and-aft direction of the vehicle body, which contacts the pressure-receiving surface when deformed in the collision direction due to a collision load.

[0011] A fourth invention of the present invention is a vehicle body end structure of the third invention, wherein the vertical pillar body is a hollow body and has a reinforcing member arranged within the hollow body to separate the internal space into upper and lower parts at a position corresponding to the pressure-receiving surface.

[0012] A fifth aspect of the present invention is a vehicle body end structure of the fourth aspect, wherein the vertical pillar has a protruding portion that protrudes outward from the side member in the vehicle width direction, and the pressure-receiving surface is located at the protruding end of the protruding portion. [Effects of the Invention]

[0013] According to the above-described means of the present invention, it is possible to provide a vehicle body end structure that can efficiently move the vehicle body away from the barrier in the event of a small overlap collision. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a perspective view showing an outline of a vehicle body end structure according to an embodiment of the present invention; [Figure 2] FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 2. [Figure 5] FIG. 1 is an assembly (exploded) view of the suspension member and vertical pillar body on the left side of the body end structure. [Figure 6] FIG. 6 is a side view in the direction VI of FIG. 2. [Figure 7] 10A and 10B are diagrams illustrating the state of a deformed portion during a small overlap collision. [Figure 8] 8 is a diagram schematically showing a state of a deformation portion further deformed from the state shown in FIG. 7. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0015] An embodiment of the present invention will be described below with reference to the drawings. A vehicle body end structure 1 according to this embodiment is disposed at the front of a vehicle body and constitutes a vehicle body structure adapted to handle small overlap collisions. A small overlap collision is defined as an offset collision in which the overlap amount with the other vehicle in the vehicle width direction is 25% or less, as determined in safety evaluation tests by, for example, the Insurance Institute for Highway Safety (IIHS) in the United States. When a collision load is applied to a limited narrow area on the side edge of the front of a vehicle such as an automobile, the vehicle body end structure 1 transmits the collision load to the vehicle body, generating a lateral force F. Note that the up / down, front / rear, and left / right directions in the explanation of each drawing are indicated when viewed from the direction of travel of the vehicle such as an automobile.

[0016] <Body end structure 1> 1, the vehicle body end structure 1 includes a bumper reinforcement 2 provided at the front end of the vehicle body, side members 3 provided on both the left and right sides of the vehicle body rearward of the bumper reinforcement 2, and a suspension member 4 disposed below the side member 3. Crash boxes 5 are disposed between the front end portions 31 (tips) of the left and right side members 3 and the bumper reinforcement 2.

[0017] <Bumper Reinforcement 2> The bumper reinforcement 2 is a long structural member extending in the vehicle width direction and disposed as a front bumper reinforcement at the front end of the vehicle body. The bumper reinforcement 2 is made of, for example, a steel plate member, and is press-formed into a hat-shaped cross section perpendicular to the longitudinal direction. As shown in FIG. 2, in a plan view, left and right end portions 2b in the longitudinal direction of the bumper reinforcement 2 are gently curved toward the rear of the vehicle body. Also, as shown in FIG. 3, the cross-sectional shape of the bumper reinforcement 2 has a recessed portion 12 recessed toward the rear of the vehicle body in the central portion in the vertical direction of the bumper reinforcement 2, protruding portions 13 formed on both the upper and lower sides of the recessed portion 12, and flange portions 14.

[0018] <Deformation section 6 (strength member)> As shown in Figure 2, deformation portions 6 are provided at both end portions 2b of the bumper reinforcement 2, extending outward from the side members 3 in the vehicle width direction. The deformation portions 6 are made of a stronger strength member such as a steel plate member, and are configured to have greater strength than the central portion 2a in the longitudinal direction of the bumper reinforcement 2. The deformation portions 6 are disposed between the crash boxes 5 and the bumper reinforcement 2, and support the bumper reinforcement 2 from the vehicle interior side. In other words, the deformation portions 6 are disposed on the vehicle interior side of the bumper reinforcement 2, and are connected to the crash boxes 5.

[0019] As shown in FIGS. 3 and 4 , the deforming portion 6 is processed so that its cross-sectional shape perpendicular to the longitudinal direction substantially matches the cross-sectional shape of the end 2 b of the bumper reinforcement 2. This allows the deforming portion 6 and the end 2 b of the bumper reinforcement 2 to overlap. The bumper reinforcement 2 and the deforming portion 6 are fixed to the front end of the crash box 5 by a bolt 16 and a nut 17. For example, the bolt 16 penetrates from the upper surface 18 to the lower surface 19 of the bumper reinforcement 2. Alternatively, instead of using a through bolt 16, separate bolts may be fastened to the upper surface 18 and the lower surface 19. When subjected to a load due to a small overlap collision of the vehicle, the deforming portion 6 may deform in the collision direction. Specifically, as shown in FIG. 7 , the deforming portion 6, which receives a collision load from the barrier B, may bend toward the vehicle interior, starting from the vicinity of the connection point with the crash box 5.

[0020] As shown in FIG. 4, the deforming portion 6 has a generally M-shaped cross section in the vertical direction. Specifically, a generally U-shaped recess 23 recessed toward the inside of the vehicle body is formed in the vertical center of the deforming portion 6, and protrusions 24 are formed on both the top and bottom sides of the recess 23. Furthermore, as shown in FIG. 2, the top plate portion 25 and the bottom plate portion 26 forming the M shape of the deforming portion 6 have a tapered shape in which the widths of each become narrower toward the tips (the outer ends in the vehicle width direction) in a plan view. Furthermore, as shown in FIG. 7, the length of the deforming portion 6 extending outward in the vehicle width direction is set so that when the deforming portion 6 bends due to a collision load, it reliably abuts against the vertical pillars 7 attached to the side members 3. Furthermore, the vertical wall of the recess 23 is formed flat and functions as an abutment surface 27 that abuts against a pressure-receiving surface 38 of the vertical pillar 7 (described later). The generally M-shaped cross section of the deforming portion 6 further enhances its strength.

[0021] <Side member 3> As shown in Figures 1 and 2, the side members 3 are frame members of the vehicle body that are arranged on the vehicle interior side of the bumper reinforcement 2 in the longitudinal direction of the vehicle body. The side members 3 are elongated and extend in the longitudinal direction of the vehicle body, and are arranged on both the left and right sides of the vehicle body as front side members. As shown in Figure 5, the side members 3 are formed integrally, for example, by welding two separate, press-formed steel plate members joined together by pressing. The cross-sectional shape of the side members 3 perpendicular to the longitudinal direction is a closed polygonal shape (for example, an octagonal shape) that has an inwardly concave shape.

[0022] <Vertical column 7> A vertical pillar 7 is disposed at each front end portion 31 of the left and right side members 3. As shown in FIG. 5 , the vertical pillar 7 is a hollow member formed, for example, by welding two separate, front and rear press-formed steel plate members together. Specifically, the vertical pillar upper portion 7a of the vertical pillar 7 is attached to the end portion of the side member 3 on the bumper reinforcement 2 side, i.e., to the vehicle width direction outer surface 32 of the front end portion 31, and the vertical pillar lower portion 7b extends downward from the side member 3. The vertical pillar upper portion 7a has a fitting portion 36 formed in a substantially U-shape, and the vertical pillar 7 is attached so as to fit into the side member 3 from the vehicle width direction outer side. As shown in FIG. 2 , the vertical pillar upper portion 7a has a substantially trapezoidal shape in a plan view and has a protruding portion 37 that protrudes outward in the vehicle width direction from the side member 3. A flat pressure-receiving surface 38 is formed at the protruding end of the protruding portion 37.

[0023] As shown in Fig. 6, the vertical pillar 7 is disposed so as to face the suspension member 4 in the vehicle width direction. The lower end of the vertical pillar lower part 7b is connected to the suspension member 4 by, for example, a connecting bolt 35. With this configuration, the vertical pillar 7 and the suspension member 4 are capable of relative movement in the up-and-down direction, but the relative movement in the vehicle width direction is restricted.

[0024] The vertical pillar 7 is configured to have enough rigidity so as not to deform significantly in the event of a collision. As shown in Fig. 5, a reinforcing member 39 that divides the internal space into upper and lower parts is disposed inside the hollow body of the vertical pillar 7 at a position corresponding to the pressure-receiving surface 38. The reinforcing member 39 is, for example, a metal member formed into a roughly U-shape, and is positioned near the lower side of the pressure-receiving surface 38 so that the central surface of the U-shape intersects with the up-down direction of the vertical pillar 7.

[0025] <Crash Box 5> The crash boxes 5 are disposed on the vehicle interior side of the bumper reinforcement 2 in the longitudinal direction of the vehicle body. For example, when a collision load is applied to the front of the vehicle body, the crash boxes 5 undergo compressive deformation to absorb the energy. As shown in FIG. 5, the crash boxes 5 are cylindrical and are formed, for example, by pressing two left and right halves of a steel plate member and joining them together by welding. The cross section of the crash boxes 5 perpendicular to the longitudinal direction is a closed polygonal shape (for example, an octagonal shape) and has an inwardly concave shape.

[0026] <Suspension member 4> 1 and 2, the suspension member 4 is a frame member of the vehicle body that connects the vehicle's undercarriage parts and body parts and is disposed below the side members 3. The suspension member 4 is made of a metal material such as steel, and is configured in a frame shape that includes a pair of side rails 42, 43 that extend in the front-rear direction on both the left and right sides, and two cross members 45, 46 that connect these side rails 42, 43. Then, as shown in FIG. 6, the lower ends of the vertical pillars 7 are connected to the front ends of the left and right side rails 42, 43, respectively.

[0027] <Effects of the embodiment> Next, the effects of the above-described embodiment will be described.

[0028] According to this embodiment, as shown in FIG. 7 , during a small overlap collision, the deformable portion 6 (strength member) that receives the collision load deforms so as to bend toward the vehicle interior, starting from the vicinity of the connection point with the crash box 5. The bent deformable portion 6 abuts against the vertical pillar 7, becoming a beam-like member that is suspended across the side member 3, and the collision load is transmitted to the side member 3 and the suspension member 4 via the vertical pillar 7. As a result, a lateral force F acts toward the side member 3 on the side opposite to the collision side of the vehicle body, moving the vehicle body away from the barrier B. Furthermore, as shown in FIG. 8 , even after the deformable portion 6 is bent and deformed, the vertical pillar 7 does not deform significantly, and the collision load is transmitted to the vehicle body. In this way, by generating a lateral force F on the vehicle body during a barrier collision and reducing the energy absorbed by the vehicle body, an effect is obtained in which the vehicle body passes through the barrier B as if being thrown off.

[0029] According to the vehicle body end structure 1 of this embodiment, when the deformation portion 6 of the bumper reinforcement 2 receives the load of a barrier collision, it deforms so as to bend around the vicinity of the tip of the crash box 5 as a base point. Therefore, even if there is variation in the position where the barrier B hits, the variation in the bending position of the bumper reinforcement 2 can be kept small. Furthermore, because the deformation portion 6 has a sufficient length, it can be reliably brought into contact with the vertical pillar 7 even if the bending position of the bumper reinforcement 2 or the deformation state of the crash box 5 varies depending on the position where the barrier B hits. Then, when the deformation portion 6 contacts the vertical pillar 7, the collision load from the barrier B is transmitted to the side member 3. At this time, the deformation portion 6 acts as a beam spanning between the tip of the crash box 5 attached to the side member 3 and the vertical pillar 7 to receive the barrier B, so it can transmit a large load from the early stage of the collision. In other words, a large load can be transmitted to the vehicle body without waiting for the barrier B, the deformation portion 6, and the vertical pillar 7 to be connected in series. Therefore, the efficiency of transmission of the collision load to the vehicle body can be improved, and the vehicle body can be efficiently moved away from barrier B in the event of a small overlap collision.

[0030] In the vehicle body end structure 1 according to this embodiment, the vertical pillars 7 are connected to the suspension member 4, so that the collision load is also transmitted to the suspension member 4 via the vertical pillars 7. That is, in addition to the paths through which the collision load is transmitted to the bumper reinforcement 2 and the side member 3, a path is formed through which the collision load is transmitted to the suspension member 4 via the vertical pillars 7. This makes it possible to improve the strength and rigidity against loads in the lateral direction of the vehicle body.

[0031] The deformation portion 6 of the bumper reinforcement 2 according to this embodiment is set to a length extending outward in the vehicle width direction so that when subjected to a collision load, it bends from a base point near the connection point with the crash box 5 and reliably abuts against the vertical pillar 7 attached to the side member 3. By suppressing the variation in the base point of bending of the deformation portion 6, it is possible to set the deformation portion 6 to an appropriate length. In other words, there is no need to make the deformation portion 6 excessively long, and an increase in the weight of the member can be suppressed, which makes it possible to reduce the weight of the member.

[0032] The vehicle body end structure 1 according to this embodiment is configured so that when the deforming portion 6 receives a collision load and deforms so as to bend, the abutment surface 27 of the deforming portion 6 and the pressure-receiving surface 38 of the vertical pillar 7 come into surface-to-surface contact. Therefore, the deforming portion 6 abuts against the vertical pillar 7 more reliably, and the load can be transmitted. This can further improve the efficiency of transmitting the load to the vehicle body.

[0033] In plan view, the top plate portion 25 and the bottom plate portion 26 of the deformation portion 6 have a tapered shape, with the width of each of the top plate portion 25 and the bottom plate portion 26 narrowing toward the tip (the outer end in the vehicle width direction). This makes it easier for the abutment surface 27 of the deformation portion 6 to abut against the pressure-receiving surface 38 of the vertical pillar 7 from the early stage of a collision, allowing the deformation portion 6 to form a beam shape. This can further improve the efficiency of load transmission to the vehicle body.

[0034] The vertical pillar 7 has a protruding portion 37 that protrudes outward from the side member 3 in the vehicle width direction, and a pressure-receiving surface 38 is located at the protruding end of the protruding portion 37. This makes it easier for the abutment surface 27 of the deformable portion 6 and the pressure-receiving surface 38 of the vertical pillar 7 to abut against each other in the early stage of a collision, allowing a beam-like configuration to be formed. This can further improve the efficiency of load transmission to the vehicle body.

[0035] The vertical pillar 7 is made hollow, which allows for a reduction in the weight of the component. Also, inside the hollow body of the vertical pillar 7, a reinforcing member 39 is provided, located below the pressure-receiving surface 38. This makes it possible to prevent the cross section of the vertical pillar 7 from being crushed and deformed during a small overlap collision. Therefore, the rigidity and strength of the hollow vertical pillar 7 can be ensured.

[0036] The vertical pillars 7 are constructed to have enough strength to prevent large deformation such as crushing during a collision. This makes it possible to reduce the absorption of the collision load from the initial stage of the collision until after the deformation of the deforming parts 6, and the deforming parts 6 in contact with the vertical pillars 7 act as beams to efficiently transmit the collision load to the vehicle body. In other words, a lateral force F can be efficiently generated, moving the vehicle body away from the barrier B.

[0037] In the vehicle body end structure 1, the vertical pillars 7 are connected to the side members 3 and the suspension members 4. This eliminates the need for additional structural members to form the load transfer path. In other words, the load transfer path does not include the power unit, so it is not affected by the placement of the power unit. This increases the degree of freedom in vehicle body design.

[0038] <Other embodiments> Although specific embodiments of the present invention have been described above, the present invention can be embodied in many different forms.

[0039] For example, the vehicle body end structure 1 in the above embodiment is an example of a structure in the front part of a vehicle body, but the vehicle body end structure 1 according to the present invention can also be applied to the rear part of a vehicle body.

[0040] The vehicle body end structure 1 according to the above embodiment is configured to include a strength member as a deformation portion 6 at the longitudinal end 2b of the bumper reinforcement 2. Alternatively, the bumper reinforcement may be formed from a single steel plate, for example, by joining steel plates of different thicknesses or materials using a tailored blank. In this case, for example, the plate thickness of the longitudinal end of the bumper reinforcement may be increased to form a deformation portion with increased strength.

[0041] The bumper reinforcement 2 according to the above embodiment has a so-called forward hat cross section, with the central portion in the up-down direction recessed inward toward the vehicle body. The deformation portion 6 is also formed in a cross section corresponding to the bumper reinforcement 2. Alternatively, a bumper reinforcement having a so-called reverse hat cross section, with the central portion in the up-down direction protruding outward toward the vehicle body, may be used. In this case, the deformation portion is also formed in a cross section corresponding to the bumper reinforcement having a convex reverse hat cross section.

[0042] The shape of the vertical pillar and the mounting position relative to the side member are set appropriately according to the specifications of the vehicle.

[0043] The cross-sectional shape of the side members 3 and the crash boxes 5 may be any other shape, such as a square or a hexagon, instead of an octagonal polygon.

[0044] <Effects of each invention described in "Means for solving the problems"> Finally, the effects of the above embodiments corresponding to the inventions in the "Means for Solving the Problems" section will be added.

[0045] According to a first aspect of the present invention, a vehicle body end structure includes a deformation portion extending outward in the vehicle width direction from a longitudinal end of a bumper reinforcement and a vertical pillar extending in the vertical direction on the vehicle width direction outer surface of a side member. With this configuration, when the deformation portion receives a load due to a barrier collision, it deforms so as to bend in the collision direction. Because the deformation portion has a sufficient length, the deformation portion can reliably abut against the vertical pillar, even if the bending position of the bumper reinforcement or the deformation state of the tip of the side member varies depending on the position where the barrier hits. The abutment of the deformation portion with the vertical pillar transmits the collision load from the barrier to the side member. Furthermore, because the vertical pillar is connected to the suspension member, the collision load is also transmitted to the suspension member via the vertical pillar. In other words, by adopting a configuration that transmits the collision load to the side member and the suspension member, the strength and rigidity of the vehicle body against lateral loads can be improved. Furthermore, the deformation portion acts as a beam spanning between the tip of the side member and the vertical pillar to support the barrier, allowing it to transmit a large load from the initial stage of the collision. Therefore, the efficiency of load transmission to the vehicle body can be improved, and the vehicle body can be efficiently moved away from the barrier in the event of a small overlap collision.

[0046] According to the second aspect of the present invention, the deformation portion of the bumper reinforcement is composed of a strength member arranged between the bumper reinforcement and the crash box attached to the tip of the side member. Since the strength required differs between the longitudinal center and end portions of the bumper reinforcement, by making the deformation portion of the bumper reinforcement a separate member with higher strength, the strength of the bumper reinforcement can be appropriately increased as needed. In addition, the increase in the weight of the entire bumper reinforcement can be suppressed, allowing for the weight of the member to be reduced.

[0047] According to the third aspect of the present invention, the vertical pillar has a pressure-receiving surface formed on the outer side of the side member in the vehicle width direction, and the deformation portion has a contact surface formed on the inner side of the vehicle in the longitudinal direction of the vehicle body. When the deformation portion is deformed in the collision direction due to a collision load, the contact surface can contact the pressure-receiving surface of the vertical pillar. By configuring the deformation portion and the vertical pillar to be in surface-to-surface contact, the deformation portion can be more reliably contacted with the vertical pillar, and the collision load can be transmitted to the vehicle body. Therefore, the efficiency of transmitting the load to the vehicle body can be improved.

[0048] According to the fourth aspect of the present invention, the vertical pillar has a reinforcing member disposed within the hollow body. The reinforcing member is disposed at a position corresponding to the pressure-receiving surface so as to separate the internal space of the vertical pillar. This can prevent the cross section of the vertical pillar from being crushed and deformed during a small overlap collision. Therefore, the rigidity and strength of the vertical pillar 7 can be improved, and a larger load can be transmitted to the vehicle body.

[0049] According to the fifth aspect of the present invention, the vertical pillar has a protruding portion that protrudes outward in the vehicle width direction from the side member, and the pressure-receiving surface is located at the protruding end of the protruding portion. This makes it easier for the abutment surface of the deformable portion and the pressure-receiving surface of the vertical pillar to abut against each other from the early stage of a collision, allowing for a beam-like configuration. This can further improve the efficiency of load transmission to the vehicle body. [Explanation of symbols]

[0050] 1. Body end structure 2 Bumper Reinforcement 2a Center of bumper reinforcement 2b End of bumper reinforcement 3 Side members 4 Suspension members 5. Crash Box 6 Deformation part (strength member) 7 Vertical pillars 7a Top of vertical column 7b Bottom of vertical column 12 recess 13 Convex part 14 Flange 16 volts 23 Recess 24 Convex part 25 Top plate 26 Bottom plate part 27 Contact surface 31 Front end of side member 32 Outer surface of side member 35 Connecting bolt 36 Fitting part 37 Protrusion 38 Pressure-receiving surface 39 Reinforcement members 42 Side rail 43 Side rail 45 cross member 46 Cross member

Claims

1. A vehicle body end structure provided at least in one of a front portion and a rear portion of a vehicle body, which transmits a collision load to the vehicle body, a long bumper reinforcement member disposed at an end of the vehicle body in the front-rear direction and extending in the vehicle width direction; a side member disposed on an inner side of the vehicle body than the bumper reinforcement in the vehicle front-rear direction and extending in the vehicle front-rear direction; a suspension member disposed below the side member; a deformation portion extending outward in a vehicle width direction from the side member at a longitudinal end of the bumper reinforcement; a vertical pillar attached to an outer surface of the bumper reinforcement side end of the side member in the vehicle width direction and extending downward from the side member so as to be connected to the suspension member, When the deformation portion is deformed in the collision direction due to a collision load, the deformation portion abuts against the vertical pillar.

2. 2. The vehicle body end structure according to claim 1, A vehicle body end structure, wherein the deformation portion is arranged between a crash box attached to the tip of the side member and the bumper reinforcement, and is composed of a strength member that supports the bumper reinforcement from the inside of the vehicle.

3. The vehicle body end structure according to claim 1 or 2, the vertical pillar body has a pressure-receiving surface formed on the outer side of the side member in the vehicle width direction, The deformation portion is formed on the vehicle interior side in the longitudinal direction of the vehicle body, and has a contact surface that comes into contact with the pressure-receiving surface when it deforms in the collision direction due to a collision load.

4. The vehicle body end structure according to claim 3, The vertical pillar is a hollow body, and has a reinforcing member disposed within the hollow body so as to separate the internal space into upper and lower sections at a position corresponding to the pressure-receiving surface.

5. 5. The vehicle body end structure according to claim 4, The vertical pillar has a protruding portion that protrudes outward in a vehicle width direction beyond the side member, and the pressure-receiving surface is located at a protruding end of the protruding portion.

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