JP5299170B2 - Body structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To absorb collision energy by bending a skeleton member in a specified direction during a vehicle collision. <P>SOLUTION: This vehicle body structure 10 includes an inner channel 30 formed into a U-shape in cross section, a side rail 40 formed into a U-shape in cross section, arranged together with the inner channel 30 so that mutual opening parts may be faced to each other and constituting a side member 20 together with the inner channel 30, and a reinforcement 50 formed into a U-shape in cross section and connected to the inner channel 30. A free end 51A of one opposed reinforcing wall part 51 formed in the reinforcement 50 is butted against a free end 41A of one second opposed wall part 41 formed in the side rail 40. A partial free end 59A of the longitudinal direction of the other opposed reinforcing wall part 52 is located closer to a connection reinforcing wall part 53 side and the one opposed reinforcing wall part 51 side than a free end 42A of the other second opposed wall part 42. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a vehicle body structure.

  Patent Document 1 discloses a vehicle body side part structure. In this vehicle body side structure, a rocker is formed on the side member, and a front reinforcement is provided at an upper corner portion on the vehicle width direction inner side of the rocker in the vehicle front-rear direction front side portion, and a bend at the upper corner portion is provided. Stiffness against compression is increased. Further, a rear reinforcement is provided at a lower corner portion on the inner side in the vehicle width direction at the rear side portion of the rocker in the vehicle front-rear direction, and rigidity against bending compression at the lower corner portion is enhanced. And since the rigidity with respect to bending compression of each part of a rocker is raised in this way, it is possible to receive the collision load input into a rocker rationally.

JP 2007-203893 A JP 2006-62558 A

  However, in the example described in Patent Document 1, the side member is not bent in a specific direction at the time of, for example, a vehicle front collision, and the collision energy is not absorbed.

  This invention is made | formed in view of the said situation, Comprising: It aims at providing the vehicle body structure which can bend | fold a frame | skeleton member to a specific direction at the time of a vehicle collision, and can absorb collision energy.

  In order to solve the above-described problem, the vehicle body structure according to claim 1 includes a pair of first opposing wall portions and a cross section having a first connecting wall portion that connects ends of the pair of first opposing wall portions. A U-shaped cross section having a first skeleton constituent member formed in a U-shape, a pair of second opposing wall portions, and a second connecting wall portion that connects ends of the pair of second opposing wall portions. And the first skeleton component member and the first skeleton component member are arranged so that their openings face each other, and the free end sides of the pair of second opposing wall portions are inside the pair of first opposing wall portions. A pair of opposing reinforcements, a second skeleton constituent member that is joined in a state of being overlapped with the free end sides of the pair of first opposing wall portions and constitutes a longitudinal skeleton member with the first skeleton constituent member; The first skeleton has a wall portion and a connecting reinforcing wall portion that connects ends of the pair of opposing reinforcing wall portions. A reinforcing member formed in a U-shaped cross-section opening on the same side as the component member, and formed in a longitudinal shape extending in the longitudinal direction of the skeleton member and coupled to the first skeleton component member, One of the pair of opposing reinforcing wall portions is one end of the pair of second opposing wall portions and a free end of each other, and the other of the pair of opposing reinforcing wall portions is at least a part in the longitudinal direction. The free end of the pair of second opposing wall portions is positioned closer to the connection reinforcing wall portion side and the one opposing reinforcing wall portion side than the other free end.

  In this vehicle body structure, a U-shaped reinforcing member is provided inside the skeleton member, and one opposing reinforcing wall portion formed on the reinforcing member is formed on the second skeleton component member. The second opposing wall portion and the free end of each other are abutted. On the other hand, the other opposing reinforcing wall portion formed on the reinforcing member has at least a part of the free end in the longitudinal direction connected to the connecting reinforcing wall more than the free end of the other second opposing wall portion formed on the second skeleton constituent member. It is located on the part side and one second opposing wall part side.

  Therefore, for example, when a collision load is input from the longitudinal direction to the skeleton member due to a vehicle collision, the free end of one opposing reinforcing wall and the free end of one second opposing wall collide with each other. Thus, deformation of one side of the skeleton member (one first opposing wall, one second opposing wall, one opposing reinforcing wall provided) is suppressed. On the other hand, the free end of at least a part of the other opposing reinforcing wall portion in the longitudinal direction does not abut against the free end of the other second opposing wall portion, and as a result, the skeleton member is placed on the one side described above. It is bent so as to form a convex shape.

  That is, in this vehicle body structure, the free end of one opposing reinforcing wall and the free end of one second opposing wall are abutted against each other, so that the proof strength of one side of the skeleton member is ensured. On the other hand, at least a part of the free end of the other opposing reinforcing wall portion in the longitudinal direction is positioned closer to the connecting reinforcing wall portion side and the one second opposing wall portion side than the free end of the other second opposing wall portion. Thus, the proof strength of the other side of the skeleton member (the side on which the other first opposing wall portion, the other second opposing wall portion, and the other opposing reinforcing wall portion are provided) It is lower than the yield strength. And by this proof stress difference, a skeleton member is bent so that it may become convex to the above-mentioned one side.

  Thus, according to the vehicle body structure of the first aspect, the collision energy can be absorbed by bending the skeleton member in a specific direction at the time of a vehicle collision.

  The abutment of the free end of the one opposing reinforcing wall and the free end of the second opposing wall is not limited to the case where the two abut each other from the beginning, but only when the vehicle collides. This includes the case where the two are arranged slightly apart so as to hit each other.

  The vehicle body structure according to claim 2 is the vehicle body structure according to claim 1, wherein the other opposing reinforcing wall portion is recessed toward the one opposing reinforcing wall portion, and a part in the longitudinal direction is a bottom portion. A concave portion is formed, and both sides of the concave portion in the longitudinal direction of the other opposing reinforcing wall portion are configured such that the other second opposing wall portion and the free ends of each other face each other.

  In this vehicle body structure, for example, when a collision load is input from the longitudinal direction to the skeleton member due to a vehicle collision, the free ends on both sides of the concave portion in the longitudinal direction of the other opposing reinforcing wall and the other first The deformation | transformation of this site | part in a skeleton member is suppressed because the free end with two opposing wall parts collides. On the other hand, since the free end of the bottom of the concave portion in the other opposing reinforcing wall portion does not abut against the free end of the other second opposing wall portion, as a result, the skeletal member is bent starting from this concave portion. It is done.

  Thus, according to the vehicle body structure of the second aspect, at the time of a vehicle collision, the skeleton member can be bent in a specific direction from the specific position in the longitudinal direction of the skeleton member to absorb the collision energy.

  A vehicle body structure according to a third aspect is the vehicle body structure according to the second aspect, wherein the skeleton member is arranged such that the opposing direction of the pair of first opposing wall portions is the vehicle vertical direction and the vehicle body side A side member extending in the vehicle front-rear direction at the portion, the side member extending along the vehicle front-rear direction from the rocker portion formed at the center portion of the vehicle front-rear direction, and the front end portion or the rear end portion of the rocker portion A kick portion that inclines toward the upper side in the vehicle vertical direction as it moves away from the rocker portion, and the concave portion is at least one of the rocker portion, the kick portion, the rocker portion, the kick portion, and the connecting portion. It is the structure formed in either vehicle up-down direction upper side.

  According to this vehicle body structure, the concave portion is formed on the upper side in the vehicle vertical direction of at least one of the rocker portion, the kick portion, and the connecting portion between the rocker portion and the kick portion. When a collision load is input to the side member from the front-rear direction of the vehicle, the side member is bent upward in the vertical direction of the vehicle from any location in the region from the rocker to the kick to absorb the collision energy. can do.

  The kick part may be formed on the front side in the vehicle front-rear direction with respect to the rocker part, or may be formed on the rear side in the vehicle front-rear direction with respect to the rocker part. Further, when the kick portion is formed on the front side in the vehicle front-rear direction with respect to the rocker portion, the above-described vehicle collision corresponds to, for example, a vehicle front-side collision or a vehicle front-side offset collision, and the kick portion is behind the rocker portion in the vehicle front-rear direction. The above-described vehicle collision corresponds to, for example, a vehicle rear surface collision or a vehicle rear surface offset collision.

  The vehicle body structure according to claim 4 is the vehicle body structure according to claim 1, wherein the other opposing reinforcing wall portion has a free end that is longer than a free end of the other second opposing wall portion in the longitudinal direction. It is set as the structure located in the said connection reinforcement wall part side and said one 2nd opposing wall part side.

  According to this vehicle body structure, for example, when a collision load is input from the longitudinal direction to the skeleton member due to a vehicle collision, the free end of the other opposing reinforcing wall portion extends in the longitudinal direction of the other second Since it does not hit the free end of the opposing wall portion, the skeletal member can be bent in a specific direction from any location in the skeletal member to absorb collision energy.

  The vehicle body structure according to claim 5 is the vehicle body structure according to claim 2 or 4, wherein the skeletal member is configured such that the other opposing reinforcing wall portion is on the upper side in the vehicle vertical direction with respect to the one opposing reinforcing wall portion or The side member is arranged so as to be positioned on the lower side and is a side member extending in the vehicle front-rear direction on the side of the vehicle body.

  According to this vehicle body structure, when the other opposing reinforcing wall portion is disposed on the upper side in the vehicle vertical direction with respect to the one opposing reinforcing wall portion, a collision load is applied to the side member from the vehicle front-rear direction due to a vehicle collision. When input, the side member can be bent upward in the vehicle vertical direction. On the other hand, when the other opposing reinforcing wall portion is disposed on the lower side in the vehicle vertical direction with respect to the one opposing reinforcing wall portion, when a collision load is input from the vehicle front-rear direction to the side member due to a vehicle collision The side member can be bent upward in the vehicle vertical direction.

  As described above in detail, according to the present invention, the collision energy can be absorbed by bending the skeleton member in a specific direction at the time of a vehicle collision.

It is a top view which shows the left side half of the vehicle body to which the vehicle body structure which concerns on one Embodiment of this invention was applied. It is a left view of the vehicle body shown in FIG. It is a perspective view of the inner channel and reinforcement which comprise the side member shown by FIG. It is a principal part expansion perspective view of FIG. FIG. 5 is a cross-sectional view (back cross-sectional view) of the side member shown in FIG. 1 cut along line 5-5 in FIG. FIG. 6 is a cross-sectional view (back cross-sectional view) of the side member shown in FIG. 1 cut along line 6-6 in FIG. It is a principal part expansion perspective view in the joint location of the inner channel shown in FIG. 1, and reinforcement. FIG. 8 is a cross-sectional view (back cross-sectional view) of the side member shown in FIG. 1 cut along line 8-8 in FIG. 7. It is a figure explaining the load which acts with respect to the side member shown by FIG. 1 at the time of a vehicle collision, and the direction which a side member deform | transforms at this time. It is sectional drawing (back sectional drawing) which shows the deformation | transformation state at the time of the vehicle collision of the side member shown by FIG. It is a figure which shows the modification of the vehicle body structure which concerns on one Embodiment of this invention. It is a figure which shows the modification of the vehicle body structure which concerns on one Embodiment of this invention.

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

  Note that an arrow UP, an arrow FR, and an arrow OUT shown in each figure respectively indicate the vehicle up-down direction upper side, the vehicle front-rear direction front side, and the vehicle width direction outer side (left side).

  The vehicle body 60 shown in FIGS. 1 and 2 is for example a vehicle such as a passenger car, and includes a plurality of cross members 61 to 67 and a suspension member 68 in addition to the side member 20 as a skeleton member. ing.

  The vehicle body 60 is configured to be bilaterally symmetric. Here, the configuration of the left half is described, and the illustration and description of the configuration of the right half are omitted.

  The side member 20 is disposed on the left side of the vehicle body, and is formed in a longitudinal shape extending in the vehicle front-rear direction. A central portion of the side member 20 in the vehicle front-rear direction is a rocker portion 22, a kick portion 24 is formed on the vehicle front-rear direction front side with respect to the rocker portion 22, and a vehicle front-rear direction rear side with respect to the rocker portion 22 is formed. A kick portion 26 is formed.

  As shown in FIG. 2, the kick portion 24 is inclined so as to go upward in the vehicle vertical direction from the front end portion of the rocker portion 22 toward the front side in the vehicle front-rear direction (away from the rocker portion 22). 26 inclines so that it may go to the vehicle up-down direction upper side as it goes to the vehicle front-back direction rear side from the rear end part of the rocker part 22 (as it goes away from the rocker part 22).

  The vehicle body structure 10 according to an embodiment of the present invention is respectively formed in a region from the rocker portion 22 to the kick portion 24 in the side member 20 and a region from the rocker portion 22 to the kick portion 26 in the side member 20. Has been applied.

  The vehicle body structure 10 on the rear side in the vehicle front-rear direction is configured substantially symmetrically with the vehicle body structure 10 on the front side in the vehicle front-rear direction. Therefore, hereinafter, the vehicle body structure 10 on the front side in the vehicle front-rear direction will be described, and the description on the vehicle body structure 10 on the rear side in the vehicle front-rear direction will be omitted.

  As shown in FIGS. 3 to 8, the side member 20 is constituted by an inner channel 30 as a first skeleton constituent member and a side rail 40 as a second skeleton constituent member. 3 and 4, the side rail 40 is omitted from the side member 20, and only the inner channel 30 and the later-described reinforcement 50 are shown.

  As shown in FIGS. 5 and 6, the inner channel 30 includes a pair of first opposing wall portions 31 and 32 facing in the vehicle vertical direction, and an inner side in the vehicle width direction of the pair of first opposing wall portions 31 and 32. It is formed in a U-shaped cross section having a first connecting wall portion 33 for connecting the end portions of the first connecting wall portion 33 and the first connecting wall portion 33.

  On the other hand, the side rail 40 is a second connection that connects a pair of second opposing wall portions 41 and 42 facing in the vehicle vertical direction and an end portion of the pair of second opposing wall portions 41 and 42 on the outer side in the vehicle width direction. It is formed in a U-shaped cross section having a wall portion 43.

  Further, the side rail 40 is disposed so that the inner channel 30 and the opening in the U-shape of each other face each other. That is, the inner channel 30 is disposed so as to open outward in the vehicle width direction, and the side rail 40 is disposed so as to open inward in the vehicle width direction.

  And the free end side of a pair of 2nd opposing wall part 41 and 42 is arrange | positioned inside a pair of 1st opposing wall part 31 and 32, and the free end of this pair of 1st opposing wall part 31 and 32 It is made into the state where it overlapped with each side, and it is joined by the welding part 46 over the free end side of this pair of 1st opposing wall parts 31 and 32, and the vehicle front-back direction.

  A reinforcement 50 as a reinforcing member is provided inside the side member 20 constituted by the inner channel 30 and the side rail 40.

  The reinforcement 50 includes a pair of opposing reinforcing wall portions 51 and 52 facing in the vehicle vertical direction, and a connecting reinforcing wall portion 53 that connects ends of the pair of opposing reinforcing wall portions 51 and 52 on the inner side in the vehicle width direction. And has a U-shaped cross section that opens to the same side as the inner channel 30 (outside in the vehicle width direction). The reinforcement 50 is formed in a longitudinal shape extending in the longitudinal direction (vehicle longitudinal direction) of the side member 20.

  As shown in FIGS. 7 and 8, the pair of opposing reinforcing wall portions 51 and 52 are formed with notches 54 on the free end sides at a plurality of positions in the longitudinal direction. And the free end side of a pair of opposing reinforcement wall parts 51 and 52 is made into the state which overlapped with the free end side of a pair of 1st opposing wall parts 31 and 32, respectively, and this pair of 1st opposing wall part 31 is made. , 32 and the respective notches 54 are connected by welds 56.

  As shown in FIGS. 5 and 6, the free end 51 </ b> A of the one opposing reinforcing wall portion 51 disposed on the lower side in the vehicle vertical direction abuts the free end 41 </ b> A of the one second opposing wall portion 41. It has been.

  On the other hand, as shown in FIGS. 4 and 6, a part of the other opposing reinforcing wall portion 52 arranged on the upper side in the vehicle vertical direction has a part in the longitudinal direction on one side of the opposing reinforcing wall portion 51 (lower side in the vehicle vertical direction). A concave portion 58 is formed to be recessed on the side. More specifically, as shown in FIG. 3, the concave portion 58 has three portions in the longitudinal direction of the other opposing reinforcing wall portion 52, that is, the rocker portion 22, the kick portion 24, the rocker portion 22 and the kick portion. 24 is formed at each of the connecting portions 28.

  As shown in FIG. 6, the bottom portion 59 of the recessed portion 58 is inclined so as to be directed toward the one opposing reinforcing wall portion 51 side (the vehicle vertical direction lower side) toward the other second opposing wall portion 42. The free end 59A is located closer to the connection reinforcing wall 53 and the one opposing reinforcing wall 51 (the vehicle width direction inner side and the vehicle vertical direction lower side) than the free end 42A of the other second opposing wall 42. Has been. Further, as shown in FIG. 5, the free ends 52 </ b> A on both sides of the concave portion 58 in the longitudinal direction of the other opposing reinforcing wall portion 52 are abutted against the free ends 42 </ b> A of the other second opposing wall portion 42. Yes.

  Next, the operation and effect of one embodiment of the present invention will be described.

  In the vehicle body structure 10 according to one embodiment of the present invention, as shown in FIGS. 5 and 6, a reinforcement 50 having a U-shaped cross section is provided inside the side member 20. The free end 51 </ b> A of the one opposing reinforcing wall 51 formed on the side abuts the free end 41 </ b> A of the second opposing wall 41 formed on the side rail 40.

  On the other hand, a concave portion 58 is formed in a part of the other opposing reinforcing wall portion 52 formed in the reinforcement 50 in the longitudinal direction so as to be recessed on the one opposing reinforcing wall portion 51 side (the vehicle vertical direction lower side). . The free end 59A of the bottom portion 59 of the concave portion 58 is connected to the connecting reinforcing wall portion 53 side and the one opposing reinforcing wall portion 51 side (the vehicle width direction inner side and the vehicle) from the free end 42A of the other second opposing wall portion 42. It is located on the lower side in the vertical direction.

  Therefore, as shown in FIG. 9, for example, when a collision load F is input to the side member 20 from the front side in the vehicle front-rear direction due to a vehicle frontal collision or a vehicle frontal offset collision, as shown in FIG. The free end 51A of the one opposing reinforcing wall portion 51 and the free end 41A of the second opposing wall portion 41 abut against each other, so that deformation of the side member 20 in the vehicle vertical direction is suppressed.

  At this time, as shown in FIG. 5, the free ends 52 </ b> A on both sides of the concave portion 58 in the longitudinal direction of the other opposing reinforcing wall portion 52 and the free ends 42 </ b> A of the other second opposing wall portion 42 abut each other. Thereby, the deformation | transformation of this site | part in the side member 20 is also suppressed.

  On the other hand, as shown in FIG. 10, the free end 59 </ b> A of the bottom 59 of the concave portion 58 and the free end 42 </ b> A of the other second opposing wall portion 42 do not hit each other. As shown by an arrow A in FIG. 9, the vehicle starts from a portion (points B, C, and D in FIG. 9; see also FIG. 3) where the concave portion 58 is formed in the region from the rocker portion 22 to the kick portion 24. It is bent up and down.

  In other words, in the vehicle body structure 10, the free end 51 </ b> A of one opposing reinforcing wall portion 51 and the free end 41 </ b> A of one second opposing wall portion 41 are abutted, so Strength is secured. On the other hand, the other opposing reinforcing wall portion 52 is formed with a plurality of concave portions 58, so that the proof strength of the side member 20 on the upper side in the vehicle vertical direction is higher than the proof strength of the side member 20 on the lower side in the vertical direction of the vehicle. Is also low. Then, due to this proof stress difference, the side member 20 is bent upward in the vehicle vertical direction so as to protrude downward in the vehicle vertical direction.

  As described above, according to the vehicle body structure 10 according to the embodiment of the present invention, for example, at the time of a vehicle front collision or a vehicle front offset collision, the side member 20 is bent in a specific direction (the vehicle vertical direction upper side) to absorb the collision energy. can do.

  Moreover, since only the recessed part 58 was provided in the reinforcement 50, collision energy can be absorbed, suppressing the increase in mass and cost.

  In addition, since the concave portion 58 also serves as a bead, the rigidity of the reinforcement 50 can be secured by the concave portion 58.

  In addition, if the reinforcement 50 is couple | bonded inside the inner channel 30 before couple | bonding the inner channel 30 and the side rail 40, 41 A of free ends of one 2nd opposing wall part 41, and one opposing reinforcement wall The inner channel 30 and the side by utilizing the abutment of the free end 51A of the part 51 and the abutment of the free end 42A of the other second opposing wall part 42 and the free end 52A of the other opposing reinforcing wall part 52. The mutual positioning with respect to the rail 40 in the vehicle width direction (that is, the assembled width of the side members 20) can also be guaranteed.

  Next, a modification of one embodiment of the present invention will be described.

  In the above-described embodiment, the vehicle body structure 10 has a configuration in which the concave portion 58 is formed on the upper side of the side member 20 in the vehicle vertical direction. In this case, the side member 20 can be bent downward in the vehicle vertical direction at the time of, for example, a vehicle front collision or a vehicle front offset collision.

  Moreover, in the said embodiment, although the concave-shaped part 58 was formed in three places, the rocker part 22, the kick part 24, and the connection part 28 of the rocker part 22 and the kick part 24, two of these or one place It may be formed.

  Moreover, in the said embodiment, although the recessed part 58 was formed in a part of the longitudinal direction of the other opposing reinforcement wall part 52, as FIG. 11 shows, the other opposing reinforcement wall part 52 is longitudinal direction. The free end 52A is positioned on the side of the connecting reinforcing wall 53 and the one opposing reinforcing wall 51 (the vehicle width direction inner side and the vehicle vertical direction lower side) than the free end 42A of the other second opposing wall 42. As described above, the vehicle may be inclined downward in the vehicle vertical direction with respect to the vehicle width direction.

  Even when configured in this manner, for example, when a collision load is input from the front side in the vehicle front-rear direction to the side member 20 due to a vehicle frontal collision or a vehicle frontal offset collision, the other opposing reinforcing wall portion 52 is free. Since the end 52A does not collide with the free end 42A of the other second opposing wall portion 42 in the longitudinal direction, the side member 20 is set in a specific direction (upward and downward in the vehicle vertical direction) starting from any part of the side member 20 The collision energy can be absorbed.

  In the modification shown in FIG. 11, the other opposing reinforcing wall portion 52 is configured to be formed on the upper side in the vehicle vertical direction of the side member 20. Also good. In this case, the side member 20 can be bent downward in the vehicle vertical direction at the time of, for example, a vehicle front collision or a vehicle front offset collision.

  Moreover, in the said embodiment, although the vehicle body structure 10 which concerns on one Embodiment of this invention was applied to the side member 20, as shown in FIG. 12, any of the above-mentioned cross members 61-67 are shown, for example. It may be applied to the cross member 70 as a skeleton member corresponding to.

  In the modification shown in FIG. 12, the cross member 70 is constituted by a first skeleton constituent member 80 and a second skeleton constituent member 90, and the cross member 70 has a reinforcing member as a reinforcing member. Reinforcement 100 is provided. The cross member 70 is disposed such that the first skeleton component member 80 and the second skeleton component member 90 face each other in the vehicle vertical direction. In addition, the structure of this 1st frame | skeleton structural member 80, the 2nd frame | skeleton structural member 90, and the reinforcement 100 becomes the structure similar to the above-mentioned inner channel 30, the side rail 40, and the reinforcement 50, The structure of each member The description is omitted using the same reference numerals.

  Moreover, the vehicle body structure 10 according to an embodiment of the present invention may be applied to a skeleton member other than a side member or a cross member.

  Moreover, in the said embodiment, although the vehicle body structure 10 was set as the structure by which the inner channel 30 and the reinforcement 50 were arrange | positioned inside the vehicle width direction, and the side rail 40 was arrange | positioned on the vehicle width direction outer side, this and cross section May be the opposite configuration.

  In the above embodiment, the free end 51A of the one opposing reinforcing wall portion 51 and the free end 41A of the one second opposing wall portion 41 are arranged to face each other from the beginning. You may arrange | position a little apart so that it may face.

  As mentioned above, although one Embodiment of this invention and its modification were demonstrated, this invention is not limited above, In addition to the above, in a range which does not deviate from the main point, it can implement variously. Of course there is.

10 Car body structure 20 Side member (frame member)
22 Rocker parts 24, 26 Kick part 28 Connecting part 30 Inner channel (first skeleton constituent member)
31, 32 1st opposing wall part 33 1st connection wall part 40 Side rail (2nd frame | skeleton structural member)
41, 42 Second opposing wall 43 Second connecting wall 50 Reinforcement (reinforcing member)
51, 52 Opposite reinforcing wall portion 53 Connecting reinforcing wall portion 58 Concave portion 59 Bottom portion 70 Cross member (frame member)
80 First skeleton constituent member 90 Second skeleton constituent member 100 Reinforcement (reinforcing member)

Claims (5)

A first skeleton component member formed in a U-shaped cross section having a pair of first opposing wall portions and a first connecting wall portion that connects ends of the pair of first opposing wall portions;
It is formed in a U-shaped cross section having a pair of second opposing wall portions and a second connecting wall portion that connects the ends of the pair of second opposing wall portions. And the free end sides of the pair of second opposing wall portions overlap the free end sides of the pair of first opposing wall portions inside the pair of first opposing wall portions, respectively. A second skeleton constituent member that is combined in a state of being formed and constitutes a longitudinal skeleton member with the first skeleton constituent member;
It has a pair of opposing reinforcing wall portions and a connecting reinforcing wall portion that connects the ends of the pair of opposing reinforcing wall portions, and is formed in a U-shaped cross section that opens to the same side as the first skeleton constituent member. And a reinforcing member formed in a longitudinal shape extending in the longitudinal direction of the skeleton member and coupled to the first skeleton component member,
With
One of the pair of opposing reinforcing wall portions is abutting one of the pair of second opposing wall portions with a free end of each other,
The other of the pair of opposing reinforcing wall portions is such that at least a part of the free ends in the longitudinal direction is closer to the connecting reinforcing wall portion than the other free end of the pair of second opposing wall portions and the one opposing reinforcing portion. Located on the wall side,
Body structure. The other opposing reinforcing wall portion is formed with a concave portion that is recessed toward the one opposing reinforcing wall portion and has a bottom portion in the longitudinal direction.
On both sides of the concave portion in the longitudinal direction of the other opposing reinforcing wall portion, the other second opposing wall portion and the free ends of each other are abutted.
The vehicle body structure according to claim 1. The skeleton member is a side member that is disposed so that the opposing direction of the pair of first opposing wall portions is the vehicle vertical direction and extends in the vehicle front-rear direction at the vehicle body side portion,
The side member is tilted so as to be directed upward in the vehicle vertical direction as moving away from the rocker portion along the vehicle longitudinal direction from the front end portion or the rear end portion of the rocker portion, and a rocker portion formed at a center portion in the vehicle longitudinal direction. And a kick part to
The concave portion is formed on the vehicle vertical direction upper side of at least one of the rocker portion, the kick portion, the rocker portion, the kick portion, and the connecting portion,
The vehicle body structure according to claim 2. The other opposing reinforcing wall portion has a free end located in the longitudinal direction in the connection reinforcing wall portion side and the one second opposing wall portion side relative to the free end of the other second opposing wall portion. Yes,
The vehicle body structure according to claim 1. The skeleton member is disposed such that the other opposing reinforcing wall portion is positioned on the upper or lower side in the vehicle vertical direction with respect to the one opposing reinforcing wall portion, and extends in the vehicle longitudinal direction at the vehicle body side portion. Being a member,
The vehicle body structure according to claim 2 or claim 4.

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