JP6485245B2 - Rear body structure of the vehicle - Google Patents

Description

  The present invention relates to a rear body structure of a vehicle, and more particularly to a rear body structure of a vehicle in which a differential is provided between left and right rear wheels of the vehicle.

  A vehicle such as an automobile is usually provided with a differential (rear differential) between the left and right rear wheels. The differential device has a differential gear mechanism that is connected to the left and right rear wheels to distribute and transmit power.

  Patent Document 1 discloses a cooling device for cooling a differential device of a vehicle in which the differential device is cooled when a running wind associated with traveling of the vehicle hits an outer surface of a housing (differential carrier) that houses a differential gear mechanism. It is disclosed to project fins outward. Specifically, cooling fins project from the outer surface of the lower part of the housing where the lubricating oil accumulates in the housing.

Japanese Utility Model Publication No. 3-25066 (especially FIGS. 1 and 2)

  By the way, when the differential is a rear differential provided between the left and right rear wheels of the vehicle, high-temperature exhaust gas exhausted from the engine at the front of the vehicle is passed to the rear of the vehicle at the front of the differential. The exhaust pipe to be circulated is arranged to extend in the vehicle front-rear direction. Then, when the vehicle is traveling, the traveling wind that is heated by touching the exhaust pipe hits the cooling fins (cooling portions) of the differential device, and the differential device does not cool down, and lubrication due to the oil film running out of the lubricating oil, etc. Defects can occur.

  The present invention provides a rear body structure of a vehicle in which high-temperature traveling wind is prevented from hitting a cooling portion of a differential device even when an exhaust pipe through which high-temperature exhaust gas flows is located in front of the differential device. Objective.

In order to solve the above problems, the present invention provides an exhaust pipe between an exhaust pipe that circulates exhaust gas exhausted from an engine disposed in an engine room at the front of the vehicle to the rear of the vehicle and the left and right rear wheels of the vehicle. A vehicle body structure including a differential device that distributes and transmits power input from the engine to the rear wheels, wherein the exhaust pipe is in the vehicle width direction of the differential device A cooling portion that is disposed so as to extend in the vehicle front-rear direction on one side of the vehicle and that cools the differential device when a traveling wind from driving of the vehicle hits is provided on the other side of the differential device in the vehicle width direction. The cooling unit includes a plurality of side fins that protrude from the other side surface in the vehicle width direction of the differential device to the other side, and each side fin has a height that is closer to the rear of the vehicle. It is inclined so as to be higher And wherein the door.

According to the present invention, the cooling portion that cools the differential device when the running wind hits is provided on the outer surface of the differential device on the side opposite to the exhaust pipe in the vehicle width direction. It is possible to suppress a problem that the traveling wind that is heated by touching the cooling unit impedes cooling of the differential device. Moreover, since the cooling unit includes a plurality of side fins protruding on the side surface opposite to the exhaust pipe in the differential device, the differential device can be efficiently cooled with a simple configuration.

  In the present invention, a vehicle body structural member extending in the vehicle width direction is disposed at the rear of the vehicle, the exhaust pipe is disposed below the vehicle body structural member, and the differential device is disposed above the vehicle body structural member. It is preferable that it is arrange | positioned.

  According to this configuration, the differential and the exhaust pipe are separately arranged above and below the vehicle body component due to the presence of the vehicle body component. For this reason, the distance in the vertical direction between the differential device and the exhaust pipe becomes long, and thermal damage to the differential apparatus by the exhaust pipe is suppressed.

  In the present invention, the vehicle body constituting member is preferably a rear suspension cross member constructed between the rear suspension devices of the left and right rear wheels.

  According to this configuration, the existing rear suspension cross member can be used as a component for the rear suspension, and the distance in the vertical direction between the differential device and the exhaust pipe can be increased.

  In the present invention, it is preferable that a damper device for attenuating vibration of the differential device is provided on an outer surface on one side in the vehicle width direction of the differential device.

  According to this configuration, since the damper device is provided on the outer surface of the differential device on the side opposite to the cooling unit in the vehicle width direction, the problem that the damper device interferes with the traveling wind hitting the cooling unit is avoided.

  In the present invention, it is preferable that a rubber damper device for attenuating vibration of the differential device is provided on the outer surface of the differential device.

  According to this configuration, since the vertical distance between the differential device and the exhaust pipe is long, thermal damage to the damper device by the exhaust pipe is suppressed. Therefore, a rubber damper device having an excellent damping effect can be used without any trouble.

  In the present invention, it is preferable that an air guide member that guides traveling wind from the front of the vehicle toward the cooling unit is provided at a lower part of the vehicle in front of the cooling unit.

  According to this configuration, since the traveling wind efficiently hits the cooling unit, the cooling efficiency of the differential device by the cooling unit is increased.

  In the present invention, a vehicle side member extending in the vehicle front-rear direction is disposed in the vehicle width direction intermediate portion of the vehicle, and the exhaust pipe and the air guide member sandwich the vehicle side member in the vehicle width direction. It is preferable that it is disposed.

  According to this configuration, the presence of the vehicle-side member prevents the traveling wind that has been heated by touching the exhaust pipe from entering the air guide member. Therefore, the problem that high-temperature traveling air is guided to the cooling unit by the air guide member is suppressed.

  In the present invention, the vehicle-side member is preferably a frame member that connects a transmission communicated with an engine at the front of the vehicle and the differential at the rear of the vehicle.

  According to this structure, it can suppress that the driving | running | working wind which touched the exhaust pipe and became hot uses the existing frame member as components for power plants, and enters an air guide member.

In the present invention, it is preferable that the cooling unit further includes a plurality of rear fins protruding rearward from a region on the other side in the vehicle width direction on the rear surface of the differential.

According to this configuration, it is possible to more efficiently cool the differential device.

In the present invention, the cooling unit may be provided on the outer surface of the portion corresponding to the inner surface of the differential gear lubricant is agitated by rotation of the differential gear mechanism in the differential device are in contact preferable.

  According to this configuration, it is possible to efficiently dissipate the lubricating oil that is agitated in the differential and generates heat. Therefore, early deterioration of the lubricating oil can be reliably suppressed.

  According to the present invention, there is provided a rear vehicle body structure in which a high-temperature traveling wind is prevented from hitting a cooling portion of a differential device even when an exhaust pipe through which high-temperature exhaust gas flows is located in front of the differential device. Provided.

1 is a schematic plan view showing a main configuration of a vehicle according to an embodiment of the present invention. It is a left view of the differential of the rear of the said vehicle. Similarly it is a rear view. It is a bottom view of the periphery of the differential of the rear of the said vehicle. FIG. 5 is a vertical cross-sectional view taken along line VV in FIG. 4. It is a perspective view from the vehicle upper right front around the differential of the rear of the said vehicle. It is a perspective view from the vehicle upper left front similarly. It is a perspective view from the vehicle lower left front similarly.

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

  As shown in FIG. 1, the present embodiment relates to a rear vehicle body structure in which a rear differential 10 (corresponding to a “differential device” of the present invention) is provided between left and right rear wheels 18 of a vehicle. The rear differential 10 includes a differential gear mechanism 12 that is connected to the left and right rear wheels 18 to distribute and transmit power. An exhaust pipe 6 is disposed on the right side of the rear differential 10 so as to extend in the vehicle front-rear direction. The exhaust pipe 6 circulates exhaust gas discharged from the engine 2 disposed in the engine room 1 at the front of the vehicle to the rear of the vehicle.

  Specifically, the vehicle according to the present embodiment is an FR (front engine / rear drive) vehicle. The engine 2 is so-called vertically disposed in the engine room 1 at the front of the vehicle so that the cylinder row direction faces the vehicle front-rear direction. The engine 2 is an in-line four-cylinder four-cycle gasoline engine, and a transmission 3 is connected to the rear surface of the engine 2. The transmission 3 is a manual transmission, and 6 forward speeds and reverse speeds are achieved according to the driver's shift lever operation.

  The output rotation of the transmission 3 is transmitted to the rear differential 10 at the rear of the vehicle via a propeller shaft 4 extending in the vehicle front-rear direction at an intermediate portion in the vehicle width direction of the vehicle. The rear differential 10 is provided between the left and right rear wheels 18 and includes a differential gear mechanism 12 that is connected to the left and right rear wheels 18 to distribute and transmit power, and a housing 11 that houses the differential gear mechanism 12.

  The differential gear mechanism 12 includes a drive pinion shaft 13 connected to the rear end portion of the propeller shaft 4, a drive pinion gear 14 provided at the rear end portion of the drive pinion shaft 13, and a ring gear 15 that meshes with the drive pinion gear 14. And a differential case 16 provided with a ring gear 15 on the outer periphery. When the differential case 16 is rotated by the rotation of the propeller shaft 4, the pinion gear and the side gear (both not shown) inside the differential case 16 function, and power is distributed and transmitted to the left and right drive shafts 17 and the left and right rear wheels 18. In FIG. 1, reference numeral 99 denotes a bearing that rotatably supports the drive pinion shaft 13 and the differential case 16 with respect to the housing 11.

  An intake system is disposed on the left side of the engine 2 and an exhaust system is disposed on the right side. Therefore, the exhaust manifold 5 is attached to the right side surface of the engine 2, and the front end portion of the exhaust pipe 6 is connected to the exhaust manifold 5. The exhaust pipe 6 is disposed so as to extend in the vehicle front-rear direction in order to distribute the high-temperature exhaust gas discharged from the engine 2 to the rear portion of the vehicle. In particular, the rear part of the exhaust pipe 6 passes through the right side of the vehicle of the rear differential 10. A catalyst device 7 is disposed in the middle of the exhaust pipe 6, and a silencer 8 is connected to the rear end.

  In the present embodiment, a power plant frame 9 (PPF, corresponding to the “vehicle side member” of the present invention) extending in the vehicle front-rear direction is disposed in the vehicle width direction intermediate portion of the vehicle. The PPF 9 is a frame member that connects the transmission 3 communicated with the engine 2 at the front of the vehicle and the rear differential 10 at the rear of the vehicle.

  Specifically, as shown in FIGS. 1 and 4 to 8, the transmission 3 and the rear differential 10 are connected to each other by a PPF 9. PPF9 is an aluminum press-molded product, and has a plurality of holes for weight reduction. The PPF 9 is a long component that extends in the vehicle front-rear direction at an intermediate portion in the vehicle width direction of the vehicle. The front end of the PPF 9 is coupled to the transmission 3 and the rear end of the PPF 9 is coupled to the rear differential 10 by appropriate coupling means.

  In this embodiment, the engine 2 and the rear differential 10 are mounted on the vehicle body, but the transmission 3 is not mounted on the vehicle body. As a result, the entire power plant is mounted on the vehicle body with flexibility. However, since the rigidity of the entire power plant is insufficient, the rigidity of the entire power plant is increased by interconnecting the transmission 3 and the rear differential 10 with the PPF 9.

In the present embodiment , the left-side protruding cooling fin 21 (the “side surface of the present invention”) is used as a cooling unit that cools the rear differential 10 when the rear wind 10 hits the outer surface of the left-side vehicle of the rear differential 10 with the traveling wind W accompanying the traveling of the vehicle. equivalent) and left rear projecting cooling fins 22 (equivalent to "rear fin" of the present invention) are provided in the fin. "

  Specifically, as shown in FIGS. 2 and 3, a plurality of left side projecting cooling fins 21 (seven in the illustrated example) are provided on the left side surface of the housing 11 of the rear differential 10 so as to project leftward. A plurality of left rear projecting cooling fins 22 (five in the illustrated example) are provided on the left rear surface of the housing 11 of the rear differential 10 so as to project rearward. The left side protruding cooling fins 21 are changed in direction so that the traveling wind W from the front of the vehicle is divided into an upper part and a lower part of the drive shaft 17. The left rear projecting cooling fin 22 is provided between the vehicle body constituting member (for example, between the side members 42 of the rear suspension of the left and right rear wheels 18) even when the rear differential 10 is moved rearward due to a load from the front of the vehicle. The amount of protrusion to the rear is adjusted so as not to come into contact with the cross member 44 (see FIG. 4) or the like installed behind the rear differential 10.

  In the left side protruding cooling fin 21 and the left rear protruding cooling fin 22, the lubricating oil (not shown) accumulated in the housing 11 of the rear differential 10 is rotated by the differential gear mechanism 12 (particularly the ring gear 15). And the outer surface of the portion corresponding to the inner surface of the housing 11 that comes into contact when stirred and stirred.

  In the present embodiment, a vehicle body constituting member 41 extending in the vehicle width direction is disposed at the rear of the vehicle, the exhaust pipe 6 is disposed below the vehicle body constituting member 41, and the rear differential 10 is disposed on the vehicle body constituting member 41. Arranged above. In this case, in the present embodiment, the vehicle body constituting member 41 is a rear suspension cross member that is installed at the front portion of the rear differential 10 between the side members 42 of the rear suspension of the left and right rear wheels 18.

  Specifically, as shown in FIG. 4, a pair of left and right rear suspension side members 42 (corresponding to the “rear suspension device” of the present invention) are located on the vehicle inner side of the pair of left and right rear side frames 43. A pair of front and rear cross members 41, 44 that extend in the vehicle front-rear direction and are components for the rear suspension extend in the vehicle width direction. The left and right ends of the front rear suspension cross member 41 and the left and right ends of the rear cross member 44 are coupled to the upper surface of the side member 42 by appropriate coupling means. The rear differential 10 is disposed at a position surrounded by the side member 42 and the cross members 41, 44 with the front portion of the rear differential 10 covering the rear suspension cross member 41.

  As shown in FIGS. 5 to 7, the rear differential 10 is mounted (more specifically, suspended and supported) at two points on the vehicle body by a pair of left and right mounting brackets 51. As shown in FIGS. 5 to 8, the rear suspension cross member 41 is bent so that the central portion in the vehicle width direction is located slightly below when viewed from the front of the vehicle. The rear differential 10 is disposed above the rear suspension cross member 41 at the center of the rear suspension cross member 41 in the vehicle width direction, and the exhaust pipe 6 is disposed below the rear suspension cross member 41 on the vehicle right side of the rear differential 10.

  In the present embodiment, the traveling wind W from the front of the vehicle is guided toward the fins 21 and 22 in the lower part of the vehicle in front of the left side protruding cooling fin 21 and the left rear protruding cooling fin 22. An under cover 25 (corresponding to the “air guide member” of the present invention) is provided.

  Specifically, as shown in FIGS. 1, 4, 5, 7, and 8, the under cover 25 is disposed in front of the rear suspension cross member 41 on the left side of the center in the vehicle width direction. The under cover 25 has a downward convex portion 25a projecting downward on the vehicle outer side and a guide concave portion 25b recessed upward on the vehicle inner side. For example, in FIG. 4, the downward convex portion 25 a is convexly provided on the front side (downward) of the paper surface, and the guide concave portion 25 b is concavely provided on the back side (upward) of the paper surface. 5, 7, and 8, the lower convex portion 25 a is provided on the lower side of the paper surface, and the guide concave portion 25 b is provided on the upper side of the paper surface.

  The guide recess 25b is formed such that the vehicle front end and the vehicle rear end are open, the vehicle front end is wide in the vehicle width direction, and the vehicle rear end is narrow in the vehicle width direction. The traveling wind W from the front of the vehicle enters from the front end of the guide recess 25b and exits from the rear end of the vehicle. The traveling wind W obliquely passes through the guide recess 25b from the vehicle outer side to the vehicle inner side along the planar shape of the guide recess and exits from the vehicle rear end of the guide recess 25b. It hits the projecting cooling fin 21, further wraps around the rear surface of the rear differential 10 and hits the rear left projecting cooling fin 22 (see FIGS. 1 to 3).

  In the present embodiment, the PPF 9 extending in the vehicle front-rear direction is disposed at the vehicle width direction intermediate portion of the vehicle, and the exhaust pipe 6 and the under cover 25 are disposed with the PPF 9 interposed therebetween in the vehicle width direction. ing.

  Specifically, as shown in FIGS. 1, 4, 5, 7, and 8, the exhaust pipe 6 is disposed on the vehicle right side of the PPF 9 that is located in the middle in the vehicle width direction in the vicinity of the propeller shaft 4, An under cover 25 is disposed on the left side of the PPF 9 in the vehicle. The under cover 25 is attached to the vehicle body via, for example, a rear suspension cross member 41 or the like.

  In the present embodiment, a dynamic damper 31 (corresponding to the “damper device” of the present invention) that attenuates the vibration of the rear differential 10 is provided on the outer surface of the rear differential 10 on the right side of the vehicle.

  Specifically, as shown in FIGS. 1 and 4 to 7, a dynamic damper 31 is attached to an outer surface of the housing 11 on the right side of the vehicle at a relatively front portion of the rear differential 10.

  In the present embodiment, the dynamic damper 31 is a rubber dynamic damper.

  Specifically, as shown in FIGS. 6 and 7, the rubber dynamic damper 31 is configured such that a block-shaped mass body 31 a is attached to the rear differential 10, which is a vibration control object, by a mounting bracket 31 b via a rubber damper 31 c. It is an attached configuration. An excellent damping effect is exhibited by the rubber damper 31c interposed between the mass body 31a and the bracket 31b or the rear differential 10.

  Next, the operation of this embodiment will be described.

  (1) In this embodiment, between the exhaust pipe 6 that distributes the exhaust gas discharged from the engine 2 disposed in the engine room 1 in the front part of the vehicle to the rear part of the vehicle and the left and right rear wheels 18 of the vehicle. In the rear body structure of the vehicle provided with a rear differential 10 that is disposed and distributes and transmits the power input from the engine 2 to the rear wheels 18, the exhaust pipe 6 is arranged on the vehicle right side of the rear differential 10 on the vehicle front and rear sides. The left-side protruding cooling fins 21 and the left-side protruding cooling fins 22 that are disposed so as to extend in the direction and cool the rear differential 10 when the traveling wind W associated with the traveling of the vehicle hits the rear differential 10 Is provided on the outer surface of the left side of the vehicle.

  According to this configuration, the left side projecting cooling fin 21 and the left rear surface projecting cooling fin 22 that cool the rear differential 10 when the traveling wind W hits the vehicle on the opposite side of the exhaust pipe 6 in the vehicle width direction. Since it is provided on the outer surface of the left rear differential 10, the traveling wind heated by the exhaust pipe 6 when the vehicle travels hits the left side projecting cooling fin 21 and the left rear projecting cooling fin 22 so that the rear differential 10 The problem of hindering cooling is suppressed.

  (2) In the present embodiment, a vehicle body constituting member 41 extending in the vehicle width direction is disposed at the rear of the vehicle, the exhaust pipe 6 is disposed below the vehicle body constituting member 41, and the rear differential 10 is It is disposed above the vehicle body constituting member 41.

  According to this configuration, due to the presence of the vehicle body constituting member 41, the rear differential 10 and the exhaust pipe 6 are disposed separately above and below the vehicle body constituting member 41. Therefore, the distance in the vertical direction between the rear differential 10 and the exhaust pipe 6 is increased, and the heat damage to the rear differential 10 by the exhaust pipe 6 is suppressed.

  (3) In the present embodiment, the vehicle body constituting member 41 is a rear suspension cross member constructed between the side members 42 of the rear suspension of the left and right rear wheels 18.

  According to this configuration, the existing rear suspension cross member 41 can be used as a component for the rear suspension, and the distance in the vertical direction between the rear differential 10 and the exhaust pipe 6 can be increased.

  (4) In the present embodiment, a dynamic damper 31 for attenuating the vibration of the rear differential 10 is provided on the outer surface of the rear differential 10 on the right side of the vehicle.

  According to this configuration, the dynamic damper 31 is provided on the outer surface of the rear differential 10 on the right side of the vehicle opposite to the left side protruding cooling fin 21 and the left rear protruding cooling fin 22 in the vehicle width direction. However, the trouble that the traveling wind W impinges on the left side projecting cooling fins 21 and the left rear projecting cooling fins 22 is avoided.

  (5) In the present embodiment, a rubber dynamic damper 31 that attenuates the vibration of the rear differential 10 is provided on the outer surface of the rear differential 10.

  According to this configuration, since the vertical distance between the rear differential 10 and the exhaust pipe 6 is long, thermal damage to the dynamic damper 31 by the exhaust pipe 6 is suppressed. Therefore, the rubber dynamic damper 31 having an excellent damping effect can be used without any trouble.

  (6) In the present embodiment, the left side projecting cooling fin 21 and the left rear surface projecting cooling fin 22 are located at the vehicle lower part in front of the vehicle toward the cooling fins 21 and 22 from the front of the vehicle. An under cover 25 for guiding the traveling wind W is provided.

  According to this configuration, the traveling wind W efficiently hits the left side projecting cooling fin 21 and the left rear surface projecting cooling fin 22, so that the cooling efficiency of the rear differential 10 by the cooling fins 21 and 22 is increased.

  (7) In the present embodiment, the vehicle-side member 9 extending in the vehicle front-rear direction is disposed at the vehicle width direction intermediate portion of the vehicle, and the exhaust pipe 6 and the under cover 25 connect the vehicle-side member 9 to the vehicle. In the width direction, it is disposed between them.

  According to this configuration, the presence of the vehicle-side member 9 prevents the traveling wind that has been heated by touching the exhaust pipe 6 from entering the under cover 25. Therefore, the problem that the high-temperature traveling wind is guided to the left side protruding cooling fin 21 and the left rear protruding cooling fin 22 by the under cover 25 is suppressed.

  (8) In the present embodiment, the vehicle-side member 9 is a power plant frame that connects the transmission 3 communicated with the engine 2 at the front of the vehicle and the rear differential 10 at the rear of the vehicle.

  According to this configuration, it is possible to use the existing power plant frame 9 as a power plant component, and to prevent the traveling wind heated by touching the exhaust pipe 6 from entering the under cover 25.

  (9) In the present embodiment, the left side protruding cooling fin 21 and the left rear protruding cooling fin 22 are fins protruding outward from the outer surface of the rear differential 10.

  According to this configuration, the rear differential 10 can be efficiently cooled with a simple configuration.

  (10) In the present embodiment, the left side projecting cooling fin 21 and the left rear surface projecting cooling fin 22 are in contact with the lubricating oil stirred by the rotation of the differential gear mechanism 12 in the rear differential 10. It is provided on the outer surface of the portion corresponding to the inner surface of the rear differential 10.

  According to this configuration, it is possible to efficiently dissipate the lubricating oil that is agitated in the rear differential 10 and generates heat. Therefore, early deterioration of the lubricating oil can be reliably suppressed.

  In the above embodiment, the engine is installed vertically, but the present invention can also be applied, for example, when the engine is installed horizontally. Moreover, in the said embodiment, although the engine was a gasoline engine, this invention is applicable also to a diesel engine etc., for example.

  Furthermore, in the above embodiment, the exhaust pipe is disposed on the right side of the rear differential vehicle and the cooling fin is disposed on the left side of the rear differential vehicle. Conversely, the exhaust pipe is disposed on the left side of the rear differential vehicle, A cooling fin may be disposed on the right side of the rear differential vehicle. Moreover, it is needless to say that the shape shown in the above embodiment is merely an example, and is not limited thereto.

DESCRIPTION OF SYMBOLS 1 Engine room 2 Engine 3 Transmission 4 Propeller shaft 6 Exhaust pipe 9 Power plant frame (vehicle side member, frame member)
10 Rear differential (differential device)
11 Housing 12 Differential gear mechanism 17 Drive shaft 18 Left and right rear wheels 21 Left side protrusion cooling fin (cooling part)
22 Left rear projection cooling fin (cooling part)
25 Undercover (air guide member)
31 Dynamic damper (damper device)
41 Rear suspension cross member (body component)
42 Side member of rear suspension (rear suspension device)
W Running wind

Claims (10)

An exhaust pipe that circulates exhaust gas discharged from an engine disposed in an engine room at the front of the vehicle to the rear of the vehicle;
A vehicle rear body structure including a differential device disposed between left and right rear wheels of a vehicle and distributing and transmitting power input from the engine to the rear wheels,
The exhaust pipe is disposed to extend in the vehicle front-rear direction on one side of the differential device in the vehicle width direction,
A cooling part that cools the differential device when a traveling wind from driving of the vehicle hits is provided on the outer surface on the other side in the vehicle width direction of the differential device,
The cooling unit includes a plurality of side fins protruding from the other side surface in the vehicle width direction of the differential device to the other side, and the side fins are inclined so that the height thereof increases toward the rear of the vehicle. A vehicle body structure for a rear portion of a vehicle. In the rear body structure of the vehicle according to claim 1,
A vehicle body component extending in the vehicle width direction is disposed at the rear of the vehicle,
The exhaust pipe is disposed below the vehicle body constituent member,
The rear vehicle body structure of the vehicle, wherein the differential device is disposed above the vehicle body constituting member. In the rear body structure of the vehicle according to claim 2,
The rear body structure of the vehicle, wherein the vehicle body component member is a rear suspension cross member installed between the rear suspension devices of the left and right rear wheels. The rear body structure of the vehicle according to any one of claims 1 to 3,
A rear body structure of a vehicle, wherein a damper device for attenuating vibration of the differential device is provided on an outer surface on one side in the vehicle width direction of the differential device. In the rear body structure of the vehicle according to claim 2 or 3,
2. A rear vehicle body structure according to claim 1, wherein a rubber damper device for attenuating vibration of the differential device is provided on an outer surface of the differential device. In the rear body structure of the vehicle according to any one of claims 1 to 5,
A rear body structure of a vehicle, wherein a wind guide member for guiding a traveling wind from the front of the vehicle toward the cooling unit is provided at a lower part of the vehicle in front of the cooling unit. In the rear body structure of the vehicle according to claim 6,
A vehicle side member extending in the vehicle front-rear direction is disposed in the vehicle width direction intermediate portion of the vehicle,
The rear body structure of the vehicle, wherein the exhaust pipe and the air guide member are disposed with the vehicle side member interposed therebetween in the vehicle width direction. In the rear body structure of the vehicle according to claim 7,
The vehicle body member according to claim 1, wherein the vehicle side member is a frame member that connects a transmission communicated with an engine at a vehicle front portion and the differential device at a vehicle rear portion. The vehicle rear body structure according to any one of claims 1 to 8,
The rear body structure of the vehicle, wherein the cooling unit further includes a plurality of rear fins protruding rearward from a region on the other side in the vehicle width direction on the rear surface of the differential. The vehicle rear body structure according to any one of claims 1 to 9,
The cooling unit of the vehicle, characterized in that provided on the outer surface of the portion corresponding to the inner surface of the differential gear lubricant is agitated by rotation of the differential gear mechanism in the differential device are in contact Rear body structure.

Images