Vehicle rear body structure

Abstract

To provide a vehicular rear body structure capable of achieving high support rigidity of a suspension and suppressing corrosion of a suspension housing.SOLUTION: A vehicular rear body structure includes: a pair of wheel houses 1; a rear side frame 2 inside the pair of wheel houses 1 in the vehicle width direction; a pair of suspensions 7 outside the pair of rear side frames 2 in the vehicle width direction; and a pair of suspension housing 8 supporting each of the suspensions 7 inside the pair of wheel houses 1 in the vehicle width direction and outside in the vehicle width direction more than the pair of rear side frame 2. At least a part of an upper panel 2a constituting the rear side frame 2 includes an extension part 12 extending to the outside in the vehicle width direction more than a damper supporting part 11 and connected with the wheel house 1. The suspension housing 8 is provided on an upper surface 12b of the extension part 12.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a rear body structure for a vehicle.

[0002] In a vehicle with a rear suspension mounted at the rear of the body, a large load is transferred from the rear suspension to the body while the vehicle is running, so support rigidity for supporting the rear suspension is important. Therefore, various rear suspension mounting structures have been proposed from the perspective of ensuring support rigidity.

[0003] For example, in the mounting structure for a rear suspension disclosed in Patent Document 1, as shown in Fig. 7, a suspension housing 53 is provided between a rear side frame 51 and a wheel house inner 52a of a wheel house 52. The suspension housing 53 includes a support surface portion 56 that supports a damper 55 of a suspension device 54, a connecting portion 57 that extends downward Z2 and connects to the rear side frame 51, a middle floor portion 59 that extends from an upper end of the connecting portion 57 to an outer side Y2 in the vehicle width direction, and a vertical wall portion 60 that extends from an outer side Y2 edge of the middle floor portion 59 toward an upper side Z1 of the vehicle body to an inner side Y1 edge of the support surface portion 56 in the vehicle width direction. This configuration of the suspension housing 53 achieves both an expansion of the vehicle interior space and ensuring the surface rigidity of the support surface portion 56 of the suspension housing 53. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2018-162054 Summary of the Invention [Problem to be solved by the invention]

[0005] According to the above-described structure, by forming the cross section of the suspension housing 53 into a stepped shape, the portion of the suspension housing 53 that protrudes into the passenger compartment is reduced, thereby ensuring both luggage space and surface rigidity of the support surface 56. However, in large vehicles such as SUVs, in which the input load from the suspension unit 54 to the vehicle body is large, the input load becomes extremely large, so further improvement in performance with respect to the support rigidity of the suspension is desired. However, in the above-described structure, although the connecting portion 57 of the suspension housing 53 extends downward Z2 to connect to the rear side frame 51, the portion for transmitting the load from the suspension housing 53 to the rear side frame 51 cannot be ensured to be wide, making it difficult to improve the support rigidity of the suspension.

[0006] Furthermore, in the above structure, the suspension housing 53 is connected to the lower end of the wheel well inner 52a and is exposed to the space outside the vehicle through the internal space of the wheel well 52. In this type of structure, if a highly rigid material (such as an aluminum alloy) is used for the suspension housing, there is a risk of corrosion due to contact between dissimilar metals between the suspension housing and the rear side frame, and corrosion prevention measures such as a corrosion inhibitor for the suspension housing are required, but there is also a concern that the corrosion prevention measures themselves will be expensive.

[0007] The present invention aims to provide a rear body structure for a vehicle that can improve the support rigidity of the suspension and suppress corrosion of the suspension housing. [Means for solving the problem]

[0008] The present invention Claim 1The rear body structure of a vehicle includes a pair of wheel houses provided on both side surfaces of a rear portion of the vehicle, a pair of rear side frames extending in a front-rear direction of the vehicle on the vehicle widthwise inner side of the pair of wheel houses, a pair of suspensions each having a damper extending in a vehicle up-down direction on the vehicle widthwise outer side of the pair of rear side frames and a damper support portion supporting an upper end of the damper, and a pair of suspension housings supporting the pair of suspensions on the vehicle widthwise inner side of the pair of wheel houses and on the vehicle widthwise outer side of the pair of rear side frames, at least some of the components constituting the rear side frames include extension portions extending outward in the vehicle width direction from the damper support portions and connected to the wheel houses, the rear side frame has a closed cross section extending along an extension direction of the rear side frame, and an outer end portion of the closed cross section in a vehicle width direction is configured to be located more inward in the vehicle width direction than the damper support portion, The suspension housing is characterized in that it is provided on the upper surface of the extension portion.

[0009] According to this configuration, at least some of the components constituting the rear side frame include an extension portion that extends outward in the vehicle width direction from the damper support portion and is connected to the wheel house. The suspension housing is provided on the upper surface of the extension portion. This allows the load input from the suspension to be transmitted to the rear side frame via the extension portion, allowing the load to be borne by both the suspension housing and the rear side frame. As a result, the support rigidity of the suspension is improved. Furthermore, in a structure in which the suspension housing is provided on the upper surface of the extension portion as described above, the extension portion is interposed between the suspension housing and the space below the extension portion that leads to the outside of the vehicle, making it possible to suppress corrosion of the suspension housing due to outside air and moisture.

[0010] The rear body structure for a vehicle according to claim 2 of the present invention includes a pair of wheel houses provided on both side surfaces of the rear of the vehicle, a pair of rear side frames extending in the longitudinal direction of the vehicle on the vehicle widthwise inner side of the pair of wheel houses, a pair of suspensions each having a damper extending in the vehicle vertical direction on the vehicle widthwise outer side of the pair of rear side frames and a damper support portion supporting an upper end of the damper, and a pair of suspension housings supporting the pair of suspensions on the vehicle widthwise inner side of the pair of wheel houses and on the vehicle widthwise outer side of the pair of rear side frames, At least some of the components constituting the rear side frame include an extension portion that extends outward in the vehicle width direction from the damper support portion and is connected to the wheel house, the suspension housing is provided on an upper surface of the extension portion, the components of the rear side frame include an upper panel and a lower panel located below the upper panel, the extension portion is provided on the upper panel so as to be inclined upward as it extends outward in the vehicle width direction, and the extension portion has a plurality of beads that extend radially from a mounting portion of the suspension on the extension portion as a center. ,before The vehicle further comprises a plurality of first fixing portions that fix the plurality of beads to the lower panel.

[0011] With this configuration, the load input from the suspension to the vehicle body is converted to a diagonally upward direction when received by the extension portion inclined diagonally upward. Therefore, the load can be received in the shear direction of the first fixing portion, which fixes the bead provided on the extension portion to the lower panel. This can further improve the support rigidity of the suspension.

[0012] In the above rear vehicle body structure, it is preferable that the structure further comprises a plurality of second fixing portions for fixing the suspension housing to the extension portion, and that the first fixing portions and the second fixing portions are arranged alternately.

[0013] According to this configuration, the alternating first and second fixing portions indirectly connect the suspension housing, the extension portion provided on the upper panel, and the lower panel below the extension portion, thereby enabling the load input from the suspension to the suspension housing to be transmitted to both the upper and lower panels of the rear side frame, further improving the support rigidity of the suspension.

[0014] In the above rear body structure for a vehicle, it is preferable that the first fixed portion and the second fixed portion are arranged in a circumferential direction around the suspension.

[0015] With this configuration, the load input from the suspension to the vehicle body is mainly transmitted to an area centered on the suspension, but as described above, the first fixing portion and the second fixing portion are arranged circumferentially around the suspension, making it possible to fix the suspension housing and the extension portion, and the extension portion and the lower panel, on the same circumference, resulting in a well-balanced suspension support structure.

[0016] In the rear body structure for a vehicle described above, it is preferable that the end of the extension portion on the outer side in the vehicle width direction is connected to the wheel house.

[0017] With this configuration, the extension portion can separate the interior space of the vehicle on the upper side of the extension portion where the suspension housing is located from the space connected to the outside of the vehicle on the lower side of the extension portion, thereby further improving the effectiveness of preventing corrosion of the suspension housing. [Effects of the Invention]

[0018] According to the rear body structure for a vehicle of the present invention, the support rigidity of the suspension can be improved and corrosion of the suspension housing can be suppressed. [Brief explanation of the drawings]

[0019] [Figure 1]1 is a perspective view of a main part of a rear vehicle body structure of a vehicle according to an embodiment of the present invention, viewed from above at the center of the vehicle interior. [Figure 2] 2 is a front view of the suspension device accommodated in the wheel house of FIG. 1 and its surroundings. FIG. [Figure 3] 2 is a bottom view of the extension portion of the rear side frame and its surrounding area with the suspension device removed from the rear side frame of FIG. 1. FIG. [Figure 4] 2 is an explanatory cross-sectional view showing a state in which the suspension housing, the extension portion, the wheel house, and the suspension device of FIG. 1 are fixed to one another. FIG. [Figure 5] FIG. 2 is a perspective view of the suspension housing of FIG. 1. [Figure 6] FIG. 2 is an enlarged view of the suspension housing and the extension portion of FIG. [Figure 7] FIG. 1 is a cross-sectional view showing a conventional rear suspension mounting structure. DETAILED DESCRIPTION OF THE INVENTION

[0020] A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] 1 to 4 show the left rear portion of the vehicle in order to explain the rear body structure of a vehicle according to an embodiment of the present invention, but the rear body structure of this embodiment has a common configuration on both the left and right sides of the vehicle. Therefore, in the following explanation, the common configuration on both the left and right sides of the vehicle will be explained using FIGS.

[0022] As shown in Figures 1 to 4, the rear body structure of a vehicle includes a pair of wheel houses 1 provided on both side surfaces of the rear of the vehicle, a pair of rear side frames 2 extending in the vehicle fore-and-aft direction X on the inner side Y2 in the vehicle width direction Y of the pair of wheel houses 1, a floor panel 3 extending between the pair of rear side frames 2, a plurality of cross members 4 extending in the vehicle width direction Y and connecting the pair of rear side frames 2, and wheel house reinforcements 5, 6 extending in the vertical direction Z and reinforcing each wheel house 1.

[0023] Furthermore, the rear body structure of the vehicle described above includes, as suspension-related components, a pair of suspension devices 7 extending in the vehicle vertical direction Z on the outer sides Y1 in the vehicle width direction Y of the pair of rear side frames 2, and a pair of suspension housings 8 supporting the pair of suspension devices 7 on the inner sides Y2 in the vehicle width direction Y of the pair of wheel houses 1 and on the outer sides Y1 in the vehicle width direction Y of the pair of rear side frames 2. The suspension devices 7 correspond to the suspension of the present invention.

[0024] The specific configurations of the suspension device 7 and the suspension housing 8 will be described in detail later.

[0025] The wheel house 1 is a portion that houses the rear wheels and is composed of a wheel house inner 1a, which is a member on the inside Y2 in the vehicle width direction Y, and a wheel house outer (not shown), which is a member on the outside Y1. A space 1b inside the wheel house 1 can house the rear wheels and is connected to the outside of the vehicle.

[0026] The rear side frame 2 is a long frame, and as described above, has a shape extending in the vehicle front-rear direction X on the inner side Y2 of the wheel house 1 in the vehicle width direction Y.

[0027] The rear side frame 2 of this embodiment includes, as components shown in Fig. 4, an upper panel 2a and a lower panel 2b located below the upper panel 2a. The upper panel 2a is a member that forms the upper surface of the rear side frame 2 and is configured as a substantially flat panel. The lower panel 2b is a member that has a substantially U-shaped or inverted hat-shaped cross section and is joined to the upper panel 2a by a method such as welding to form the rear side frame 2 having a closed cross section.

[0028] In this embodiment, at least a portion of the upper panel 2a, which is a component that makes up the rear side frame 2, includes an extension portion 12 that extends from the damper support portion 11 to the outer side Y1 in the vehicle width direction Y and is connected to the wheel house 1. Specifically, as shown in Figures 3 to 4 and 6, in a range of the upper panel 2a that overlaps with the wheel house 1 in the vehicle fore-and-aft direction X, the extension portion 12 is formed by extending a portion of the upper panel 2a on the outer side Y1 in the vehicle width direction Y to the outer side Y1 in the vehicle width direction Y.

[0029] In this embodiment, as shown in FIG. 4, the extension portion 12 is provided on the upper panel 2a so as to be inclined upward toward the outer side Y1 in the vehicle width direction Y.

[0030] 4 and 6, an end portion 12c of the extension portion 12 on the outer side Y1 in the vehicle width direction Y is connected to the wheel house 1. This allows the extension portion 12 to separate the space inside the vehicle cabin above the extension portion 12 from a space 1b of the wheel house 1 below the extension portion 12 that is connected to the outside of the vehicle.

[0031] 6, the extension portion 12 has a plurality of beads 15 extending radially from a through-hole 12a (see FIGS. 3 and 6) that penetrates the extension portion 12 in the up-down direction Z and is the mounting portion of the suspension device 7 in the extension portion 12. As shown in FIGS. 4 and 6, the beads 15 are portions that protrude upward relative to other portions of the extension portion 12.

[0032] A suspension housing 8 is provided on the upper surface 12b of the extension portion 12 (see FIGS. 1, 4, and 6).

[0033] The rear vehicle-body structure of this embodiment further includes a plurality of first fixing portions 16 that fix the plurality of beads 15 to the lower panel 2b. As shown in Figures 4 and 6, the first fixing portions 16 of this embodiment are portions that join the beads 15 to a flange portion 2b1 at the upper end of the lower panel 2b (i.e., the portion of the upper end of the lower panel 2b in Figure 4 that is bent toward the outer side Y1 in the vehicle width direction) by spot welding or the like. The first fixing portions 16 formed by spot welding are provided through welding holes 8f, which will be described later, that are formed in the suspension housing 8.

[0034] The first fixing portion 16 may be fixed by other fixing means (for example, rivets or adhesive) other than welding.

[0035] 6, the rear vehicle body structure of this embodiment further includes a plurality of second fixing portions 17 for fixing the suspension housing 8 to the extension portion 12. The second fixing portions 17 of this embodiment are rivets that fasten the extension portion 12 to a disk portion 8g (i.e., a disk-shaped portion adjacent to the welding hole 8f) described below that is provided on the suspension housing 8. Note that the second fixing portions 17 may be fixing means other than rivets (for example, welding, adhesive, etc.).

[0036] The first fixed portions 16 and the second fixed portions 17 are arranged so as to be alternately aligned. More specifically, the first fixed portions 16 and the second fixed portions 17 are arranged so as to be alternately aligned in the circumferential direction around the suspension device 7.

[0037] (Configuration of suspension device 7) 2 and 4, the suspension device 7 of this embodiment includes a damper 9 extending in the vertical direction Z, a coil spring 10 provided coaxially with the damper 9 so as to surround the outer periphery of the damper 9, and a substantially ring-shaped damper support part 11 that supports the upper end of the damper 9. The upper end of the coil spring 10 abuts against the damper support part 11.

[0038] The upper end of the damper 9 is supported by the damper support portion 11, which is exposed to the space inside the vehicle cabin above the suspension housing 8 through the through hole 12a of the extension portion 12 (see Figures 3 and 6) and the through hole 8d of the suspension housing 8 (see Figures 5-6).

[0039] (Explanation of suspension housing 8) 5 and 6, the suspension housing 8 mainly comprises a flat base portion 8a that can come into contact with the extension portion 12, a rear connecting portion 8b that is joined to the wheelhouse reinforcing member 5 on the vehicle rear side X1, and a front connecting portion 8c that connects the wheelhouse reinforcing member 6 on the vehicle front side X2 to the cross member 4 (see FIG. 1). The suspension housing 8 is manufactured from, for example, a metal material containing aluminum (such as an aluminum alloy).

[0040] The base portion 8a has a circular through-hole 8d into which the damper support portion 11 is inserted. Bolt insertion holes 8e are formed on both sides of the through-hole 8d in the vehicle longitudinal direction X. As shown in FIG. 4, a bolt 13 provided on the damper support portion 11 passes through the extension portion 12 and the suspension housing 8 through the bolt insertion hole 8e, and a nut 14 can be screwed onto the upper end of the bolt 13. The damper support portion 11, the extension portion 12, and the suspension housing 8 are fastened together by the bolt 13 and nut 14 of FIG. 4, as shown in FIGS. 1 and 6.

[0041] As shown in FIG. 5, ribs 8h for reinforcing the base portion 8a are provided on both sides of each bolt insertion hole 8e in the vehicle front-rear direction X.

[0042] Furthermore, around the through hole 8d, which is the mounting portion of the suspension device 7, welding holes 8f for providing the first fixing portions 16 by spot welding and disc portions 8g fastened to the beads 15 of the extension portion 12 by second fixing portions 17 by rivets are arranged alternately on the circumference around the through hole 8d. The disc portions 8g are disc-shaped thin plate portions adjacent to the welding holes 8f, making them easy to rivet.

[0043] The rear connecting portion 8b is joined to the wheelhouse reinforcing member 5, thereby improving the rigidity of the suspension housing 8 and the wheelhouse 1. The front connecting portion 8c connects the wheelhouse reinforcing member 6 and the cross member 4, thereby improving the rigidity of the suspension housing 8 and the entire vehicle body.

[0044] (Features of this embodiment) (1) As shown in Figures 1 to 4, the rear body structure of the vehicle of this embodiment comprises a pair of wheel houses 1 provided on both side surfaces of the rear of the vehicle, a pair of rear side frames 2 extending in the fore-and-aft direction X of the vehicle on the inner side Y2 in the vehicle width direction Y of the pair of wheel houses 1, a pair of suspension devices 7 (suspensions) each having a damper 9 extending in the vehicle up-and-down direction Z on the outer side Y1 in the vehicle width direction Y of the pair of rear side frames 2 and a damper support portion 11 supporting the upper end of the damper 9, and a pair of suspension housings 8 supporting the pair of suspension devices 7 on the inner side Y2 in the vehicle width direction Y of the pair of wheel houses 1 and on the outer side Y1 in the vehicle width direction Y of the pair of rear side frames 2.

[0045] As shown in Figures 1, 4, and 6, at least a portion of the upper panel 2a, which is a component of the rear side frame 2, includes an extension portion 12 that extends from the damper support portion 11 toward the outer side Y1 in the vehicle width direction Y and is connected to the wheel house 1. The suspension housing 8 is provided on an upper surface 12b of the extension portion 12. This allows the load input from the suspension device 7 to be transmitted to the rear side frame 2 via the extension portion 12, so that the load can be borne by both the suspension housing 8 and the rear side frame 2. As a result, the support rigidity of the suspension device 7 is improved.

[0046] Furthermore, in the structure in which the suspension housing 8 is provided on the upper surface 12b of the extension portion 12 as described above, the extension portion 12 is interposed between the suspension housing 8 and the space below the extension portion 12 that is connected to the outside of the vehicle, making it possible to suppress corrosion of the suspension housing 8 due to air and moisture outside the vehicle. Therefore, even if the suspension housing 8 is made of a metal such as aluminum, it is possible to suppress corrosion of the suspension housing 8 without taking expensive corrosion countermeasures (such as coating with a corrosion inhibitor).

[0047] (2) 4, in the rear body structure for a vehicle according to this embodiment, the components of the rear side frame 2 include an upper panel 2a and a lower panel 2b located below the upper panel 2a. The extension portion 12 is provided on the upper panel 2a so as to be inclined upward as it extends toward the outer side Y1 in the vehicle width direction.

[0048] 6, the extension portion 12 has a plurality of beads 15 extending radially from a mounting location of the suspension device 7 in the extension portion 12 (in FIG. 6, the through hole 12a into which the damper support portion 11 is inserted) as a center. The rear body structure further includes a plurality of first fixing portions 16 that fix the plurality of beads 15 to the lower panel 2b by spot welding or the like.

[0049] With this configuration, when the load input from the suspension device 7 to the vehicle body is received by the extending portion 12 that is inclined obliquely upward, the direction of the force is converted to obliquely upward. Therefore, the load can be received in the shear direction of the first fixing portion 16, which secures the bead 15 provided on the extending portion 12 to the lower panel 2b. This makes it possible to further improve the support rigidity of the suspension device 7. In other words, compared to when the load is received in the tensile direction (peeling direction) of the first fixing portion 16, a larger load can be received when the load is received in the shear direction of the first fixing portion 16, and therefore the support rigidity of the suspension device 7 can be further improved.

[0050] Furthermore, since the bead 15 has higher rigidity than other parts of the extension part 12, the bead 15 makes it easier for the shear load to be input to the first fixing part 16. Therefore, the load can be concentrated at the part of the first fixing part 16.

[0051] (3) 6, the rear body structure of the vehicle of this embodiment further includes a plurality of second fixing portions 17 formed by rivets or the like for fixing the suspension housing 8 to the extension portion 12. The first fixing portions 16 and the second fixing portions 17 are arranged alternately.

[0052] According to this configuration, the alternating first fixing portions 16 and second fixing portions 17 indirectly interconnect the suspension housing 8, the extension portion 12 provided on the upper panel 2a, and the lower panel 2b below the extension portion 12. This makes it possible to transmit the load input from the suspension device 7 to the suspension housing 8 to both the upper panel 2a and the lower panel 2b of the rear side frame 2, further improving the support rigidity of the suspension device 7.

[0053] (4) In the rear vehicle body structure of this embodiment, as shown in FIG. 6, the first fixed portion 16 and the second fixed portion 17 are arranged around the suspension device 7 in the circumferential direction.

[0054] With this configuration, the load input from the suspension device 7 to the vehicle body is mainly transmitted to an area centered on the suspension device 7. However, as described above, the first fixing portion 16 and the second fixing portion 17 are arranged circumferentially around the suspension device 7, so that the suspension housing 8 and the extension portion 12 can be fixed to each other on the same circumference, and the extension portion 12 can be fixed to the lower panel 2b, resulting in a well-balanced support structure for the suspension device 7.

[0055] (5) In the rear vehicle body structure of the vehicle of this embodiment, an end 12c of the extension portion 12 on the outer side Y1 in the vehicle width direction Y is connected to the wheel house 1, as shown in FIG.

[0056] With this configuration, the extension portion 12 can separate the interior space of the vehicle on the upper surface 12b side of the extension portion 12 where the suspension housing 8 is located from the space connected to the outside of the vehicle on the lower surface side of the extension portion 12, thereby further improving the corrosion prevention effect of the suspension housing 8.

[0057] The end 12c of the extension 12 is tightly attached to the wheel house 1 by spot welding or the like, thereby improving sealing properties and further improving the corrosion prevention effect.

[0058] (Variation) In the above embodiment, the extension portion 12 is formed by extending the upper panel 2a, which is one of the components of the rear side frame 2, toward the outer side Y1 in the vehicle width direction, but the present invention is not limited to this, and the extension portion 12 may also be formed by extending the lower panel 2b, which is another component of the rear side frame 2, or another component not shown in the figure, toward the outer side Y1 in the vehicle width direction. [Explanation of symbols]

[0059] 1 Wheelhouse 2 Rear side frame 2a Upper Panel 2b Lower panel 7 Suspension device (suspension) 8 Suspension housing 9 Damper 10 Spring 11 Damper support part 12 Extension 12a hole 12b Top side 12c Outer edge 15 beads 16 1st fixed part 17 Second fixed part

Claims

1. A pair of wheel houses provided on both sides of the rear of the vehicle; a pair of rear side frames extending in a front-rear direction of the vehicle on inner sides of the pair of wheel houses in a vehicle width direction; a pair of suspensions each including a damper extending in a vehicle up-down direction on the vehicle width direction outer sides of the pair of rear side frames and a damper support portion supporting an upper end of the damper; a pair of suspension housings that support the pair of suspensions respectively on the inner side of the pair of wheel houses in the vehicle width direction and on the outer side of the pair of rear side frames in the vehicle width direction; Equipped with At least a portion of the components constituting the rear side frame includes an extension portion that extends outward in the vehicle width direction from the damper support portion and is connected to the wheel house, the rear side frame has a closed cross section extending along an extension direction of the rear side frame, and an outer end portion of the closed cross section in a vehicle width direction is configured to be located more inward in the vehicle width direction than the damper support portion, The suspension housing is provided on the upper surface of the extension portion. A rear body structure of a vehicle.

2. A pair of wheel houses provided on both sides of the rear of the vehicle; a pair of rear side frames extending in a front-rear direction of the vehicle on inner sides of the pair of wheel houses in a vehicle width direction; a pair of suspensions each including a damper extending in a vehicle up-down direction on the vehicle width direction outer sides of the pair of rear side frames and a damper support portion supporting an upper end of the damper; a pair of suspension housings that support the pair of suspensions respectively on the inner side of the pair of wheel houses in the vehicle width direction and on the outer side of the pair of rear side frames in the vehicle width direction; Equipped with At least a portion of the components constituting the rear side frame includes an extension portion that extends outward in the vehicle width direction from the damper support portion and is connected to the wheel house, the suspension housing is provided on an upper surface of the extension portion, The components of the rear side frame include an upper panel and a lower panel located below the upper panel, The extension portion is provided on the upper panel so as to be inclined upward as it extends outward in a vehicle width direction, the extension portion has a plurality of beads extending radially from a mounting portion of the extension portion for the suspension as a center, a plurality of first fixing portions for fixing the plurality of beads to the lower panel; Rear body structure of the vehicle.

3. 3. The rear body structure of a vehicle according to claim 2, a plurality of second fixing portions for fixing the suspension housing to the extension portion; The first fixing portions and the second fixing portions are arranged alternately. Rear body structure of the vehicle.

4. 4. The rear body structure of a vehicle according to claim 3, the first fixed portion and the second fixed portion are circumferentially disposed around the suspension; Rear body structure of the vehicle.

5. The rear body structure for a vehicle according to any one of claims 1 to 4, The outer end of the extension portion in the vehicle width direction is connected to the wheel house. Rear body structure of the vehicle.

Images