JP2016203736A - Vehicle body rear part structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle body rear part structure which preferably inhibits movement of a spare tire.SOLUTION: A vehicle V includes: a pair of left and right rear side frames 2, 2; a rear floor panel 3 installed between the pair of rear side frames 2, 2 and having a recessed part 31; a spare tire 5 installed in the recessed part 31 in a lodging state; and an inhibition member 1 which inhibits movement of the spare tire 5 at the time of a rear collision of the vehicle V. The inhibition member 1 has a cross member 11 and an inhibition plate 12. The inhibition member 1 is installed above the spare tire 5 at a front part 31b of the recessed part 31, and both end parts 11d, 11d, which are end parts when viewed in a vehicle width direction, are fixed to the pair of rear side frames 2, 2. The inhibition plate 12 extends from the cross member 11 toward the interior of the recessed part 31 to cover the spare tire 5 from the front and lower sides. An upper end part 12d of the inhibition plate 12 is fixed to the cross member 11. A lower end part 12c of the inhibition plate 12 is fixed to a bottom part 31a of the recessed part 31.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle body rear structure.

  2. Description of the Related Art Conventionally, a vehicle body rear structure has been developed that can prevent a spare tire that has moved forward during a vehicle rear-end collision from interfering with a battery unit. As this kind of vehicle body rear part structure, there exist a thing given in patent documents 1 and patent documents 2, for example.

  The rear structure of the vehicle body of Patent Document 1 includes a pair of left and right rear side frames extending along the vehicle longitudinal direction, a rear floor panel installed between the left and right rear side frames, and a tire recessed downward in the rear floor panel. A pan, a spare tire installed in the tire pan, a cross member member installed in front of the tire pan to connect the left and right rear side frames, and a power unit installed on the cross member member.

  In the rear structure of the vehicle body of Patent Document 1, the cross member member is installed so as to be spaced above the rear floor panel, and the spare member is moved forward along the lower surface of the cross member member at the time of rear collision of the vehicle. The installation height of the spare tire is set. Thereby, interference with a spare tire and a battery unit can be suppressed.

  The rear structure of the vehicle body of Patent Document 2 includes a pair of left and right rear side frames extending along the vehicle longitudinal direction, a rear floor panel installed between the left and right rear side frames, and a tire recessed downward in the rear floor panel. A pan, a spare tire installed in the tire pan, and a brace unit extending in the vehicle width direction in front of the spare tire. Both ends of the brace unit in the vehicle width direction are fixed to the left and right rear side frames via left and right gussets. The vehicle body rear part structure of Patent Document 2 includes a brace unit so that forward movement of the spare tire can be suppressed.

JP2013-23001A JP 2013-116706 A

  The rear structure of the vehicle body of Patent Document 1 employs a structure that facilitates the forward movement of the spare tire along the lower surface of the cross member member. Therefore, the front portion of the tire pan of the rear floor panel is moved by the spare tire that has moved forward. It is pressed and greatly deforms forward. For this reason, when the canister is installed in front of the tire pan, the deformed rear floor panel easily interferes with the canister.

  In the rear structure of the vehicle body of Patent Document 2, since the center side in the vehicle width direction of the brace unit is not fixed to the vehicle body, when the center side of the brace unit is pressed by the spare tire that has moved forward, the brace unit is moved forward and obliquely upward. Move a lot. For this reason, the moved brace unit easily interferes with the battery unit.

  The present invention has been developed from such a viewpoint, and an object of the present invention is to provide a vehicle body rear structure that can suitably suppress the movement of a spare tire.

  In order to solve the above-mentioned problems, a vehicle body rear structure according to the present invention is installed between a pair of left and right rear side frames extending along the vehicle front-rear direction and a pair of the rear side frames, and is a fallen spare. A rear floor having a recess in which the tire is installed; and a restraining member that suppresses the movement of the spare tire during a rear-end collision of the vehicle. The restraining member includes a cross member installed above the spare tire at a front portion of the concave portion and having both end portions in the vehicle width direction fixed to a pair of the rear side frames, and from the cross member toward the concave portion. And a restraining plate that covers the spare tire from the front and the bottom. An upper end portion of the suppression plate is fixed to the cross member, and a lower end portion of the suppression plate is fixed to a bottom portion of the recess.

  In the present invention, the upper end portion of the suppression plate is fixed to the cross member and positioned above the spare tire, and the lower end portion of the suppression plate is fixed to the bottom portion of the recess and positioned below the spare tire. For this reason, the spare tire that has moved forward presses between the upper and lower ends of the restraint plate forward, and the restraint plate is deformed forward in a convex shape. Thereby, since a spare tire can be inserted | pinched from the upper and lower sides and the movement of a spare tire can be suppressed suitably, interference with a spare tire, a power unit, etc. can be suppressed.

Moreover, it is preferable that the suppression plate has a widened portion that widens in the vehicle width direction toward the cross member, and the widened portion is fixed to the cross member.
If it does in this way, the collision load transmitted to a cross member from a control board can be distributed suitably. For this reason, the amount of upward deformation of the cross member is suppressed, and the cross member and the power unit are less likely to interfere with each other.

Moreover, it is preferable that the said suppression member is equipped with the pinching member fixed to the surface at the side of the said spare tire of the said suppression board, and was installed upwards rather than the said spare tire.
In this case, when the restraint plate is deformed forward by the spare tire that has moved forward, the sandwiching member is likely to come into contact with the upper surface of the spare tire, so that the spare tire can be securely sandwiched.

The sandwiching member is preferably formed in a trapezoidal shape having a lower side longer than an upper side in a side view.
If it does in this way, the area of the pinching member which contact | abuts to a spare tire can be increased. For this reason, the restraining plate is easily deformed forwardly, and the spare tire can be pinched more reliably.

Moreover, it is preferable that the both ends of the said clamping member in the vehicle width direction are being fixed to the both ends of the upper end part of the said suppression board in the vehicle width direction.
If it does in this way, the collision load transmitted to a cross member from a pinching member can be distributed suitably. For this reason, the amount of upward deformation of the cross member is suppressed, and the cross member and the power unit are less likely to interfere with each other.

The rear floor is provided in front of the recess, has a horizontal portion that is continuous with the recess and the bent portion, and the restraining member extends from the cross member toward the front. It is preferable to provide. In this case, the reinforcing material may be positioned above the bent portion and the horizontal portion and fixed to the horizontal portion.
If it does in this way, even if the bent part will become an edge (wrinkle) which protrudes upwards when the front part of a crevice deforms ahead convexly with the spare tire which moved, it will be located above a bent part Interference between the edge and the power unit can be suppressed by the reinforcing material.

  According to the vehicle body rear structure according to the present invention, the movement of the spare tire can be suitably suppressed.

It is a schematic perspective view which shows the state which looked down at the vehicle to which the vehicle body rear part structure which concerns on embodiment of this invention was applied from the left rear. It is sectional drawing along the II-II line of FIG. It is a principal part expanded sectional view of FIG. It is a principal part expansion perspective view which shows the state which looked down at the suppression member from the left rear. It is a principal part expansion perspective view which shows the state which looked down at the suppression member from the right front. (A) is sectional drawing which shows the state before the rear-end collision of the vehicle to which the vehicle body rear part structure which concerns on embodiment of this invention was applied, (b) is sectional drawing which shows the state at the time of rear-end collision of a vehicle. It is a principal part expansion perspective view which shows the other example of attachment of a cross member and a rear side frame. It is a principal part expansion perspective view which shows the state which looked down at the suppression member which concerns on a modification from the left rear. It is sectional drawing along the VIII-VIII line of FIG. It is a principal part expansion perspective view which shows the state which looked down at the suppression member which concerns on another modification from the left rear.

  Embodiments of the present invention will be described in detail with reference to the drawings. In the description, the same elements are denoted by the same reference numerals, and redundant description is omitted. Note that “front and rear” indicated by arrows in each figure indicates the vehicle longitudinal direction, “up and down” indicates the vehicle vertical direction, and “left and right” indicates the left and right direction (vehicle width direction) as viewed from the driver's seat. Show.

  As shown in FIG. 1, a vehicle V to which a vehicle body rear structure according to an embodiment of the present invention is applied includes a pair of left and right rear side frames 2, 2, a rear floor panel 3, a cross member 4, and a restraining member 1. I have.

<Rear side frame>
The rear side frame 2 is a metal member that extends along the longitudinal direction of the vehicle. Although illustration is omitted, the rear side frame 2 has a hat shape that opens downward in a cross-sectional view as seen from the vehicle front-rear direction. A rear bumper RB is fixed to the rear ends of the left and right rear side frames 2 and 2 (see FIG. 2).

<Rear floor panel>
The rear floor panel 3 is a metal member that constitutes the rear floor surface (rear floor) of the vehicle V. The rear floor panel 3 is installed between the left and right rear side frames 2 and 2. The left end portion of the rear floor panel 3 is joined to the left rear side frame 2 by welding, and the right end portion of the rear floor panel 3 is joined to the right rear side frame 2 by welding.

  As shown in FIG. 2, the rear floor panel 3 has a recessed portion 31 that is recessed downward at the rear portion, and a horizontal portion 32 that is provided in front of the recessed portion 31 and continues to the recessed portion 31 via a bent portion 33. Yes. In the recess 31, the spare tire 5 in a lying state is installed (accommodated).

  The recessed part 31 is comprised including the bottom part 31a and the front part 31b continuous with the front-end part of the bottom part 31a. The bottom 31 a is a wall-shaped part that forms the recess 31. A tire stopper 34 for holding the spare tire 5 is installed in the center of the bottom 31a. The front part 31 b is a wall-shaped part that forms the recess 31. The front part 31b is inclined so as to be positioned upward as it goes forward from the front end part of the bottom part 31a. The horizontal portion 32 extends forward from the upper end portion of the front portion 31 b via the bent portion 33.

  Above the horizontal portion 32, a battery unit 6 for supplying electric power to a drive motor (not shown) mounted on the vehicle V is installed. A canister 7 is installed in front of the recess 31 and below the horizontal portion 32. The battery unit 6 and the canister 7 are installed at positions corresponding to the upper and lower sides with the rear floor panel 3 interposed therebetween.

<Cross member>
As shown in FIG. 1, the cross member 4 is a metal member that extends along the vehicle width direction. The cross member 4 connects the left and right rear side frames 2 and 2 in front of the recess 31 and the restraining member 1. The left end of the cross member 4 is joined to the left rear side frame 2 by welding, and the right end of the cross member 4 is joined to the right rear side frame 2 by welding.

  The cross member 4 shown in FIG. 2 has a hat shape that opens downward in a cross-sectional view seen from the left-right direction. A flange formed at the opening edge of the cross member 4 is joined to the upper surface of the rear floor panel 3 by welding. As a result, a closed cross-section C extending along the vehicle width direction is formed between the cross member 4 and the rear floor panel 3.

<Inhibiting member>
The restraining member 1 is installed between the spare tire 5, the battery unit 6 and the canister 7, and restrains the forward movement and upward movement of the spare tire 5 at the time of rear collision of the vehicle V. The suppressing member 1 includes a cross member 11, a suppressing plate 12, a sandwiching member 13, and a reinforcing material 14.

<Horizontal material>
As shown in FIGS. 3 and 4, the cross member 11 is a metal member extending along the vehicle width direction. The cross member 11 is located behind the bent portion 33 and is installed above the front portion 31b with a gap. The cross member 11 is installed above the upper edges of the spare tire 5 and the recess 31. The cross member 11 of the present embodiment has a rectangular cylindrical shape in a cross-sectional view viewed from the left-right direction. At both left and right end portions of the rear wall 11b of the cross member 11, substantially rectangular cutout portions 11c and 11c are formed.

  As shown in FIG. 5, the left and right end portions 11 d and 11 d of the front wall 11 a of the cross member 11 are fixed to the vehicle inner side surfaces of the left and right rear side frames 2 and 2 via the left and right mounting brackets 8 and 8. Yes. The mounting bracket 8 also has a function of fixing the battery unit 6 to the rear side frame 2. That is, in this embodiment, the battery unit 6 and the cross member 11 are collectively fixed to the rear side frame 2 by the single mounting bracket 8. Thereby, even if it is a case where the suppression member 1 is added, the increase in the number of the attachment brackets 8 can be suppressed.

  The mounting bracket 8 is formed by bending a single metal plate into a predetermined shape. The mounting bracket 8 has a first fixing portion 81, a second fixing portion 82 extending rearward from the lower end portion of the first fixing portion 81, and a downward direction from an end portion on the vehicle inner side of the second fixing portion 82. And a fourth fixing portion 84 extending from the rear end portion of the third fixing portion 83 toward the vehicle inner side.

  The first fixing portion 81 is fixed to a vehicle body member (for example, a C pillar). The second fixing portion 82 is fixed to the upper surface of the rear side frame 2. The second fixing portion 82 is also fixed to the battery unit 6. The third fixing portion 83 is fixed to the side surface on the vehicle inner side of the rear side frame 2.

  The left and right end portions 11d and 11d of the front wall 11a of the cross member 11 are coupled to the fourth fixing portion 84 by bolts B. When the cross member 11 is fixed to the mounting bracket 8, the fastening operation of the bolt B can be easily performed by using the notch portion 11c.

<Suppression plate>
As shown in FIG. 3, the suppression plate 12 is a metal member that extends from the rear wall 11 b of the cross member 11 into the recess 31. The restraint plate 12 covers the front part of the spare tire 5 from the front and covers the front side of the lower part of the spare tire 5 from below.

  The suppression plate 12 shown in FIG. 4 is formed by bending a single metal plate, and has a concavo-convex shape in which convex portions and concave portions are alternately arranged on the left and right. Thereby, the suppression board 12 has the high rigidity with respect to the deformation | transformation which becomes convex ahead. The suppression plate 12 includes a narrow portion 12a positioned on the lower side, and a widened portion 12b that is continuous with the upper end of the narrow portion 12a and is widened to the left and right of the narrow portion 12a.

  The narrow portion 12a is a portion having a substantially constant width along the vehicle width direction. The narrow portion 12a is bent so as to be positioned rearward as it goes downward. The lower end portion 12 c of the narrow portion 12 a is coupled to the bottom portion 31 a of the recess 31 by a bolt B.

  The widened portion 12b is a substantially trapezoidal (substantially inverted triangular) portion. The widened portion 12b is widened toward the cross member 11 from the narrow portion 12a, and then extends upward with a constant width. The widened portion 12b is joined to the rear wall 11b of the cross member 11 by welding. The widened portion 12b may be widened from the narrow portion 12a to the cross member 11 without having a portion extending at a constant width.

<Clamping member>
The sandwiching member 13 is a metal member that extends along the vehicle width direction. The width of the sandwiching member 13 along the vehicle width direction is substantially the same as the width of the widened portion 12b along the vehicle width direction. The left and right ends 13e and 13e of the front wall 13c of the sandwiching member 13 are coupled to the left and right ends 12e and 12e of the widened portion 12b by bolts B. Circular work holes 13f are formed at both left and right ends of the rear wall 13d of the sandwiching member 13. When the clamping member 13 is fixed to the restraining plate 12, the bolt B can be easily fastened by using the work hole 13f.

  It should be noted that the number and position of the connecting portions of the bolts B may be changed as appropriate. For example, the connecting portions of the bolts B may be provided on the left and right center sides of the restraining plate 12 and the sandwiching member 13. Further, the suppression plate 12 may be joined to the sandwiching member 13 by welding.

  The sandwiching member 13 shown in FIG. 3 is fixed to the rear surface of the upper end portion 12d of the widened portion 12b above the spare tire 5. The sandwiching member 13 is installed at a position lower than the cross member 11. The sandwiching member 13 of the present embodiment has a trapezoidal shape in which the lower wall (lower side) 13b is longer than the upper wall (upper side) 13a in a cross-sectional view seen from the left-right direction.

<Reinforcing material>
As shown in FIG. 5, the reinforcing member 14 is a metal member that extends forward from the front wall 11 a of the cross member 11. The reinforcing material 14 of the present embodiment is formed by bending a single metal plate, and has an L shape in a cross-sectional view as viewed from the left-right direction. The reinforcing member 14 includes a cross member side fixing portion 14 a fixed to the cross member 11 and a floor side fixing portion 14 b fixed to the rear floor panel 3.

  The cross member side fixing portion 14a is a portion extending along the vertical direction. The cross member-side fixing portion 14a has a concave-convex shape in a horizontal cross-sectional view, and has a convex portion 14c that contacts the cross member 11 and a concave portion 14d that is separated from the cross member 11. The convex part 14c is joined to the front wall 11a of the cross member 11 by welding.

  The floor side fixing portion 14b is a portion extending along the vehicle front-rear direction. The floor-side fixing portion 14b has a concavo-convex shape in a vertical sectional view, and has a convex portion 14e that comes into contact with or close to the rear floor panel 3 and a concave portion 14f that is separated from the rear floor panel 3. The floor side fixing portion 14 b is located above the bent portion 33 and the horizontal portion 32. The front end portion side of the convex portion 14e is coupled to the horizontal portion 32 by a bolt B.

  The vehicle V to which the vehicle body rear structure according to the embodiment of the present invention is applied is basically configured as described above. Next, the function and effect will be described with reference to FIG.

  As shown in FIGS. 6A and 6B, when a collision object such as another vehicle collides with the rear end portion of the vehicle V according to this embodiment, the rear bumper RB, the rear side frame 2, the recess 31, the spare tire. 5 etc. are pushed forward by the collision object. And the front part 31b of the suppression board 12 and the recessed part 31 is pressed ahead by the spare tire 5 which has moved ahead.

As a result, the restraint plate 12 and the front portion 31b of the recess 31 are deformed, and the collision energy can be absorbed by this deformation.
In addition, a collision load is transmitted to the cross member 11 through the suppression plate 12, and the collision energy can be absorbed by deformation of the cross member 11.

In this case, in the present embodiment, the upper end portion 12d of the suppression plate 12 is fixed to the cross member 11 and positioned above the spare tire 5, and the lower end portion 12c of the suppression plate 12 is fixed to the bottom portion 31a of the recess 31. Since it is located below the spare tire 5, the spare tire 5 that has moved forward presses between the upper and lower ends of the restraint plate 12 forward, and the restraint plate 12 is deformed forwardly. Specifically, the restraint plate 12 is deformed so that the front surface is convex forward and the rear surface is concave forward.
Thereby, since the restraint plate 12 can pinch the spare tire 5 from above and below and the movement of the spare tire 5 can be suitably restrained, interference between the spare tire 5, the battery unit 6 and the canister 7 can be restrained.
In other words, since the forward movement of the spare tire 5, the sliding upward of the spare tire 5 and the jumping of the spare tire 5 can be suitably suppressed, the interference between the spare tire 5, the battery unit 6 and the canister 7 is suppressed. it can.

In particular, in this embodiment, since the sandwiching member 13 is fixed to the rear surface of the restraint plate 12 above the spare tire 5, when the restraint plate 12 is deformed forwardly, the sandwiching member 13 becomes the spare tire. It becomes easy to contact the upper surface of 5. For this reason, the spare tire 5 can be pinched reliably.
Further, in the present embodiment, since the sandwiching member 13 is formed in a trapezoidal shape with the lower side longer than the upper side in a side view, the area of the sandwiching member 13 that contacts the spare tire 5 can be increased. For this reason, the restraint plate 12 is easily deformed forward and the spare tire 5 can be pinched more reliably.

  When the spare tire 5 is further pushed after the pinching of the spare tire 5 shown in FIG. 6 (b) occurs, the cross member 11 is deformed upward as shown by a two-dot chain line in FIG. 6 (b).

In this case, in this embodiment, since the widened portion 12b of the suppression plate 12 is fixed to the cross member 11, the collision load transmitted from the suppression plate 12 to the cross member 11 can be suitably dispersed. For this reason, the amount of upward deformation of the cross member 11 is suppressed, and the cross member 11 and the battery unit 6 do not easily interfere with each other.
Further, in the present embodiment, the left and right end portions 13e, 13e of the front wall 13c of the sandwiching member 13 are fixed to the left and right end portions 12e, 12e of the widened portion 12b, and therefore transmitted from the sandwiching member 13 to the cross member 11. It is possible to suitably disperse the collision load. For this reason, the amount of upward deformation of the cross member 11 is suppressed, and the cross member 11 and the battery unit 6 are less likely to interfere with each other.

  When the spare tire 5 is further pushed in after the pinching of the spare tire 5 shown in FIG. 6 (b), the bent portion 33 of the rear floor panel 3 moves upward as shown by a two-dot chain line in FIG. 6 (b). It becomes a protruding edge (wrinkle).

  In this case, in the present embodiment, since the reinforcing member 14 is positioned above the bent portion 33 and the horizontal portion 32 and is fixed to the horizontal portion 32, even if the bent portion 33 becomes an edge protruding upward, Interference between the edge and the battery unit 6 can be suppressed by the reinforcing material 14.

As mentioned above, although embodiment of this invention was described in detail with reference to drawings, this invention is not limited to this, In the range which does not deviate from the main point of invention, it can change suitably.
In the vehicle body rear structure of the embodiment, the bolted portion may be welded, or the welded portion may be bolted.

  The cross member 11 of the present embodiment is fixed to the side surface on the vehicle inner side of the rear side frame 2, but may be fixed to the upper surface of the rear side frame 2 as shown in FIG. In the modification shown in FIG. 7, the left end portion of the cross member 11 is fixed to the upper surface of the rear side frame 2 via an L-shaped fixing bracket 9. The fixing bracket 9 includes a first fixing piece 91 fixed to the front wall 11 a of the cross member 11 and a second fixing part that extends forward from the lower end of the first fixing piece 91 and is fixed to the upper surface of the rear side frame 2. The fixed piece 92 is comprised. The cross member 11 and the first fixing piece 91 are coupled to each other by a bolt B. The rear side frame 2 and the second fixing piece 92 are coupled to each other by a bolt B. Although illustration is omitted, the right end portion of the cross member 11 has a similar fixing structure.

  The sandwiching member 13 of the present embodiment is formed in a trapezoidal shape in which the lower wall 13b is longer than the upper wall 13a in a cross-sectional view seen from the left-right direction, but the shape of the sandwiching member 13 is not particularly limited. For example, the sandwiching member 13 shown in FIGS. 8 and 9 may be used. The sandwiching member 13 of the modified example is formed of a rectangular steel pipe (square steel pipe). That is, the upper wall 13a and the lower wall 13b of the sandwiching member 13 have the same length in a cross-sectional view viewed from the left-right direction. Although not shown, the sandwiching member 13 is fixed to the suppression plate 12 by welding (for example, MIG welding) or bolts.

  Further, as shown in FIG. 10, the sandwiching member 13 itself may be omitted. Thereby, cost reduction and weight reduction can be achieved.

V vehicle (car body rear structure)
1 Inhibiting member 11 Cross member 11d, 11d Left and right both ends (both ends in the vehicle width direction)
12 Suppression plate 12b Widened portion 12c Lower end portion 12d Upper end portion 12e Left and right end portions (both end portions in the vehicle width direction)
13 sandwiching member 13a upper wall (upper side)
13b Lower wall (lower side)
13e Left and right ends (both ends in the vehicle width direction)
14 Reinforcement material 2 Rear side frame 3 Rear floor panel (rear floor)
31 Concave part 31a Bottom part 31b Front part 32 Horizontal part 33 Bending part 5 Spare tire 6 Battery unit 7 Canister

Claims (6)

A pair of left and right rear side frames extending along the longitudinal direction of the vehicle;
A rear floor installed between a pair of the rear side frames and having a recess in which a lying spare tire is installed;
A restraining member for suppressing movement of the spare tire at the time of rear collision of the vehicle;
A vehicle body rear structure comprising:
The suppression member is
A cross member installed above the spare tire at the front portion of the recess, and both ends in the vehicle width direction are fixed to the pair of rear side frames,
A restraining plate extending from the cross member into the recess and covering the spare tire from the front and the bottom,
The upper end of the suppression plate is fixed to the cross member,
The vehicle body rear structure, wherein a lower end portion of the suppression plate is fixed to a bottom portion of the recess. The suppression plate has a widened portion that widens in the vehicle width direction toward the cross member,
The vehicle body rear portion structure according to claim 1, wherein the widened portion is fixed to the cross member.   The vehicle body rear portion according to claim 1, wherein the restraining member includes a sandwiching member that is fixed to a surface of the restraining plate on the spare tire side and is disposed above the spare tire. Construction.   The vehicle body rear part structure according to claim 3, wherein the sandwiching member is formed in a trapezoidal shape having a lower side longer than an upper side in a side view.   The vehicle body rear structure according to claim 3 or 4, wherein both ends of the sandwiching member in the vehicle width direction are fixed to both ends of the upper end portion of the restraining plate in the vehicle width direction. The rear floor is provided in front of the concave portion, and has a horizontal portion continuous through the concave portion and the bent portion,
The restraining member includes a reinforcing material extending forward from the cross member,
The vehicle body rear part structure according to any one of claims 1 to 5, wherein the reinforcing member is positioned above the bent portion and the horizontal portion and fixed to the horizontal portion.

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