JP2005225451A - Vehicle body rear portion structure for electric vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle body rear portion structure for an electric vehicle capable of shortening the full length of the vehicle, and reducing the weight of a vehicle body. <P>SOLUTION: A rear suspension arm supporting portion is provided on a rear lower cross member 12, and lower end coupling portions of rear pillars 13, 14 are positioned on a vehicle body front side rather than a center portion thereof when viewed from a vehicle body side surface. The rear pillars 13, 14 rise from a suspension arm supporting bracket 20 toward a rear side of the vehicle body, and curve toward a front side of the vehicle body above the coupling portion with an upper rear cross member 15. At both end portions of the upper rear cross member 15, a shock absorber upper end side supporting portions 31a for supporting a rod of a shock absorber 40 of a rear suspension are provided. A rear suspension arm 60 supported by the suspension arm supporting bracket 20 has a shape curved so as to position a middle part thereof under a line connecting both end portions. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention belongs to the technical field of vehicle body structure.

Conventionally, in an electric vehicle, the vehicle body structure is basically an integrated monocoque structure that is almost the same as that of a gasoline engine vehicle (for example, see Non-Patent Document 1).
For example, in the rear structure of an electric vehicle body, the rear suspension arm is a linear member having one end supported by a monocoque body, and the upper end of the suspension is fixed to an integrated monocoque body.

  On the other hand, when the weight of the monocoque body is reduced in order to cope with a low-power electric vehicle as compared with a gasoline vehicle, the strength of the suspension member support portion that receives a large force from the suspension remains uneasy.

Therefore, in an electric vehicle, the rigidity of the vehicle body structure is ensured by using a frame-type body.
"Introduction to Automotive Engineering, page 216, Figure 7-7, page 222, Figure 7-14" (Mitsuhiko Kuroda, Grand Prix Publishing, published September 30, 1994)

  However, in the above prior art, in order to reduce the size while securing the indoor space, when trying to secure the indoor space by projecting the rear part of the vehicle to the upper part of the rear wheel, the suspension arm is linear, so the vehicle body The distance from the frame is narrowed. When the vehicle height is lowered to ensure maneuverability and stability, it becomes even narrower.

  This may cause the suspension arm to interfere with the rear frame of the vehicle body when the vehicle body sinks, such as when bounding.

  In particular, in the case of a wheel-in motor type or an electric vehicle provided with a motor on a suspension arm, if a motor or other accessory device is provided on the suspension arm, the distance between the motor and the rear frame of the vehicle is further reduced. There is a high risk of contact with the body frame.

  In order to avoid contact, it is necessary to lengthen the suspension arm and widen the distance from the frame. However, this has a problem in that the overall length of the vehicle is increased and weight reduction is hindered.

  The present invention has been made paying attention to the above-described problems, and the object of the present invention is to reduce the possibility of the suspension arm interfering with the frame even when the vehicle body sinks, and to reduce the vehicle body weight by shortening the overall vehicle length. An object of the present invention is to provide a rear body structure of an electric vehicle that can be realized.

  In order to achieve the above-described object, in the vehicle body rear structure of the electric vehicle according to the present invention, the lower side member extending in the longitudinal direction of the vehicle body on the left and right sides of the vehicle body, and the rear lower member connecting the rear end portions of these both side members.・ Connect the cross member, the left and right rear pillars raised upward from the rear end of the rear side member or the both ends of the rear lower cross member, and the left and right rear pillars at a position above the rear lower cross member. In a rear structure of an electric vehicle having an upper, a rear, and a cross member, a rear suspension arm support portion is provided on the rear, lower, cross member, and the rear pillar has a lower end connecting portion from its central portion when viewed from the side of the vehicle body. Located on the front side of the vehicle, rises from the lower end toward the rear of the vehicle, and above the upper / rear / cross member connection Suspension upper end support that supports the shock absorber rod of the rear suspension at the end of the upper / rear / cross member or near the upper / rear / cross member of the rear pillar. The rear suspension arm supported by the rear suspension arm support part of the rear, lower, and cross member has a curved shape so that the middle part thereof is positioned below the line connecting the both ends. .

  Therefore, in the present invention, the suspension arm is bent downward, so that the vehicle body structure with the rear part of the vehicle body protruding above the rear wheel in order to secure the volume can be brought into contact with the frame when the vehicle body is depressed. Thus, it is possible to provide a rear structure of an electric vehicle body that avoids the reduction in the overall length of the vehicle and reduces the weight of the vehicle body.

  The best mode for carrying out the present invention will be described below based on the first embodiment.

First, the configuration will be described.
FIG. 1 is an overall view of a vehicle body structure 1 using a rear body structure of an electric vehicle according to the present invention.

  The rear structure of the electric vehicle includes a lower side member 11, a rear lower cross member 12, a left rear pillar 13 and a right rear pillar 14, an upper rear cross member 15, and a suspension arm. A support bracket 20 and a shock absorber upper end support bracket 30 are provided.

  The lower side members 11 extend in the longitudinal direction of the vehicle body at the left and right of the lower portion of the vehicle body, and the rear end portions of the lower side members 11 are connected by a rear lower cross member 12.

  The rear end portion of the lower side member 11 and the connecting portion of the rear lower cross member 12 are connected via a suspension arm support bracket 20.

  The lower side member 11, the rear lower cross member 12, and the left and right rear pillars 13 and 14 are coupled via the suspension arm support bracket 20 to form a lower body coupling portion A.

  In the following, the left side of the vehicle body structure 1 will be described, but since the rear structure of the vehicle body is bilaterally symmetric, the right side has the same configuration.

The rear lower cross member 12 has a first support portion 12 a, and the suspension arm support bracket 20 has a second support portion 21.
The rear suspension arm that rotatably supports the rear wheel is supported by the first and second support portions 12a and 21.

  The left rear pillar 13 and the right rear pillar 14 are supported by a suspension arm support bracket 20 and rise from the vehicle body lower joint A to the rear of the vehicle body structure 1.

The upper rear cross member 15 connects the left and right rear pillars 13 and 14 at a position above the rear lower cross member 12.
The upper rear cross member 15 and the left and right rear pillars 13 and 14 are joined together by welding to form a vehicle body upper joint B.

A shock absorber upper end support bracket 30 for supporting the rod of the shock absorber 40 of the rear suspension arm is provided in the vicinity of the vehicle body upper joint B.
The shock absorber upper end support bracket 30 is formed by pressing a single plate, and is connected to the upper, rear, cross member 15 and left and right rear pillars 13 and 14 by welding.

  The left and right rear pillars 13 and 14 have a shape that curves toward the front of the vehicle body above the vehicle body upper joint B, that is, above the upper rear cross member 15. Connected to the front end of the vehicle.

  As described above, the left and right rear pillars 13 and 14 rise from the vehicle body lower joint A to the rear of the vehicle body structure 1 and bend toward the front of the vehicle body above the upper, rear, and cross members 15, thereby Is secured.

FIG. 2 is a perspective view of the rear part of the vehicle body structure 1, and FIG. 3 is a side view of the rear part of the vehicle body structure 1.
The rear suspension arm 60 is a trailing arm type A-shaped suspension arm whose front part is connected to the vehicle body and whose rear part rotatably supports the rear wheel 70.

The rear suspension arm 60 has a curved shape such that a middle portion thereof is positioned below a line connecting both end portions thereof.
A driving motor 80 and other accessory devices are provided at the curved portion to drive the rear wheel 70.

  As described above, in the vehicle body structure 1, the left and right rear pillars 13 and 14 protrude above the rear wheel 53 to secure the volume inside the vehicle body.

  The rear suspension arm 60 is rotatably supported by the first support portion 12 a in the rear lower cross member 12 and the second support portion 21 in the suspension arm support bracket 20.

  FIG. 4 is a top view of the rear suspension arm 60.

  The rear suspension arm 60 is a front bifurcated A-shaped suspension arm, and has a curved shape such that a middle portion thereof is positioned below a line connecting the both end portions as described above.

  The front part is divided into two parts to form a first supported part 61 and a second supported part 62, and the rear part forms a rear wheel support part 63.

  The first supported portion 61 is rotatably supported by the first support portion 12 a of the rear lower cross member 12. The second supported portion 62 is rotatably supported by the second support portion 21 of the suspension arm support bracket 20.

The arms extending from the first and second supported portions 61 and 62 approach as they extend rearward, and become one arm and further extend rearward.
A rear wheel support portion 63 is formed at the rearmost portion, and supports the rear wheel 70 rotatably.

  The arm main body 64 that connects the first and second supported parts 61 and 62 at the front part and the rear wheel support part 63 at the rear part is curved downward.

  As described above, the drive motor 80 is provided on the arm main body 64 to drive the rear wheel 70. Moreover, the cross section of the arm main body 64 is formed in a U shape in order to ensure strength and reduce weight (see FIG. 6).

  A shock absorber lower end support portion 65 is provided on the upper portion of the rear wheel support portion 63 and supports the lower end portion of the shock absorber 40.

  FIG. 5 is a side view of the rear suspension arm 60.

The arm body 64 has a curved shape so as to be positioned below a line connecting the front and rear end portions.
As a result, the entire rear suspension arm 60 is curved downward.

  In the vehicle body structure 1 in which the rear portion of the vehicle body projects above the rear wheel 53 in order to secure the volume, the distance between the vehicle body frame and the suspension arm is narrowed.

  Therefore, when the suspension arm is linear, in order to avoid contact with the frame when the vehicle body sinks, it is necessary to lengthen the suspension arm and increase the distance from the frame.

  In particular, in the case of a wheel-in motor type or an electric vehicle provided with a motor and other accessory devices on the suspension arm, it is necessary to make the suspension arm significantly longer and a wider space between the motor and the frame in order to avoid contact. .

However, this increases the overall length of the vehicle and increases the vehicle weight.
Therefore, in this embodiment, the rear suspension arm 60 whose both ends are curved downward is used.

  As shown in FIG. 3, due to the bending of the arm main body 64, even if the suspension arm has the same overall length, the curved suspension arm can take a wider distance from the vehicle body structure 1 than the straight arm. It becomes possible.

  Further, when the drive motor 80 is mounted on the rear suspension arm 60, the drive motor 80 can be mounted at a lower position by the amount of the curve than when mounted on the suspension arm that is not curved, and the distance from the frame. Can be afforded.

  Therefore, the distance between the frame and the frame can be increased without having to lengthen the suspension arm, and the overall length has been shortened while avoiding the risk of contact between the in-vehicle device and the vehicle body structure when the vehicle body sinks, such as when bounding. A suspension arm can be provided.

  FIG. 6 is a cross-sectional perspective view of the rear suspension arm 60 attached to the vehicle body structure 1.

  The arm main body 64 of the rear suspension arm 60 has a U-shaped cross section for weight reduction.

  As described above, the rear suspension arm 60 is rotatably supported by the suspension arm support bracket 20 of the vehicle body lower joint portion A and the first support portion 12a of the rear lower cross member 12.

  FIG. 7 is a top view of the rear suspension arm 60 attached to the vehicle body structure 1.

A bushing 66 is fitted into the first and second supported portions 61 and 62 of the rear suspension arm 60 and is rotatably supported by the first and second support portions 12a and 21.
The bushing 66 positions the rear suspension arm 60 and absorbs vibration.

  As described above, since the rear suspension arm 60 is curved, the rear suspension arm 60 is projected even when the vehicle body sinks even in the vehicle body structure 1 in which the rear portion of the vehicle body protrudes above the rear wheel 53 and the distance between the vehicle body frame and the suspension arm is narrow. The amount of protrusion can be suppressed.

  Therefore, it is possible to avoid interference between the rear suspension arm 60 and the frame of the vehicle body structure 1 when the vehicle body is depressed, without taking the rear suspension arm 60 to be long.

  In particular, when the drive motor 80 is mounted on the rear suspension arm 60, the drive motor 80 can be mounted at a position lower than the linear suspension arm, and the drive is performed with a sufficient distance from the frame. The possibility that the motor 80 and the vehicle body structure 1 come into contact with each other can be reduced.

Further, since the protruding amount of the rear suspension arm 60 can be suppressed, the volume of the rear trunk room can be increased.
If the rear wheel 53 is not used as a driving wheel and the driving motor 80 is not mounted on the rear suspension arm 60, the volume of the trunk room can be more secured.

FIG. 8 is a perspective view of the suspension arm support bracket 20.
The suspension arm support bracket 20 is formed by forming a single plate material in a U-shape, and is positioned parallel to the left and right arm support brackets 22 and 23 along the longitudinal direction of the vehicle body, and is positioned above the vertical surface and grounded. It has an arm support bracket horizontal surface portion 24 that is horizontal to the direction.

The rear end portion of the lower side member 11 is connected to the suspension arm support bracket 20 between the two parallel arm support bracket vertical surface portions 22 and 23.
The rear lower cross member 12 is connected to the left and right rear lower cross member connecting portions 25 and 26 provided on the left and right arm support bracket vertical surface portions 22 and 23 by fitting the end portions thereof.

The lower side member 11 and the rear lower cross member 12 are connected to each other by being coupled to the suspension arm support bracket 20.
The suspension arm support bracket 20 supports the rear suspension arm by the second support portion 21.

  Therefore, the suspension arm support bracket 20 connects the lower side member 11, the rear lower cross member 12, the left rear pillar 13, and supports the rear suspension arm 60.

  The load received by the connection and the support is ensured by the three plane portions including the arm support bracket vertical surface portions 22 and 23 and the arm support bracket horizontal surface portion 24 to ensure the strength.

  FIG. 9 is a perspective view of the lower body coupling portion A on the left side of the vehicle body.

  As described above, the lower side member 11, the rear lower cross member 12, and the left rear pillar 13 are connected via the suspension arm support bracket 20 in the lower body coupling portion A.

  A reinforcement member 16 that reinforces the connection between the suspension arm support bracket 20 and the left rear pillar 13 is provided in the vehicle body front direction of the suspension arm support bracket 20.

  The reinforcing member 16 is welded to the suspension arm support bracket 20 and the left rear pillar 13 and serves to reinforce the connection between them.

  Therefore, the suspension arm support bracket 20 connects the lower side member 11, the rear lower cross member 12, the left rear pillar 13, and supports the rear suspension arm 60.

  FIG. 10 is a perspective view of the vehicle body upper joint B when the shock absorber 40 is attached.

The shock absorber upper end support bracket 30 is formed of a single plate, and is an upper end support bracket horizontal plane portion 31 that is horizontal with respect to the vehicle body contact direction, an upper end support bracket vertical surface portion 32 that is vertical, and a vehicle front and rear direction that is perpendicular to the contact direction. The upper end support bracket connecting surface portion 33 is a flat surface along the direction, and is formed by combining these three flat portions.
Moreover, these three plane parts are provided so as to be orthogonal.

  As described above, the shock absorber upper end support bracket 30 is coupled to the upper rear cross member 15 and the left rear pillar 13, and the upper end of the shock absorber 40 is fixed by the shock absorber upper end attaching portion 31a.

Since the suspension support member supports the vehicle weight and supports the load along with the movement of the vehicle body during traveling, the load applied to the suspension support portion is large.
In particular, the load applied to the upper end of the suspension is great when the vehicle body is bound.

  Therefore, when the upper end of the shock absorber is supported by only one member, that is, when it is attached only to the upper rear cross member 15 or the left rear pillar 13 in the first embodiment, the upper rear cross member 15 and the left rear pillar 13 are mounted. Since these joint portions are welded joints, the strength may be insufficient.

  Therefore, the load is distributed and reinforced by connecting the shock absorber upper end support bracket 30 to both the upper rear cross member 15 and the left rear pillar 13.

  In addition, the suspension upper end mounting member and the rear combination lamp mounting member are shared to reduce the number of components.

Next, the operation will be described.
[Reduced vehicle length]

In the vehicle body structure 1 in which the rear portion of the vehicle body protrudes above the rear wheel 53 in order to secure the capacity, the distance between the vehicle body frame and the suspension arm becomes narrow, and there is a possibility that the frame comes into contact with the suspension arm when it sinks greatly.
When the vehicle height is lowered to ensure maneuverability and stability, the interval becomes narrower and the risk of contact increases.

  Therefore, in the case of a linear suspension arm, in order to avoid contact with the frame when the vehicle body sinks, it is necessary to lengthen the suspension arm and increase the distance from the frame.

  In particular, when the drive motor 80 is provided on a linear suspension arm, the distance between the drive motor 80 and the rear frame of the vehicle body becomes narrow, and when the vehicle body sinks such as when bouncing, the drive motor 80 and the frame The possibility of contact is great.

  Therefore, it is necessary to lengthen the suspension arm and increase the distance from the frame. However, this increases the overall length of the vehicle and hinders weight reduction.

  For this reason, the suspension arm is a rear suspension arm 60 whose center is curved downward.

  As a result, there is a sufficient space between the frame and the contact can be avoided without lengthening the suspension arm.

  In particular, when the drive motor 80 is mounted on the rear suspension arm 60 as in the first embodiment, the drive motor 80 and the vehicle body structure 1 can be mounted at a lower position by the amount of the curve. This is effective for avoiding contact.

  [Expand volume of rear trunk room]

  When the trunk room is provided at the rear part of the vehicle body, if the protruding amount of the rear suspension arm 60 is large when the vehicle body sinks, the volume of the trunk room cannot be sufficiently secured, and convenience is inferior.

  On the other hand, in the present embodiment, since the rear suspension arm 60 is curved, the amount of protrusion is smaller when the vehicle body is depressed than when a linear suspension arm is used.

Therefore, even in a rear wheel drive vehicle (RR, 4WD vehicle) in which the drive motor 80 is mounted on the rear suspension arm 60, it is easy to secure the volume of the rear trunk room, and convenience is improved.
In particular, in the case of a front-wheel drive vehicle (FF vehicle), since the drive motor 80 does not exist, the volume of the trunk room can be increased.

  [Ensuring the strength of the suspension top mounting part]

  When the vehicle body sinks or bounces, the shock absorber 40 expands and contracts to buffer the shock, and the rear suspension arm 60 rotates about the first and second support portions 12a and 21 as the rotation center.

  At this time, a great force is applied to the upper end of the rear suspension arm 60. When the upper end of the rear suspension arm 60 is supported only by the upper rear cross member 15 or the left rear pillar 13, the connection between the two is welded. Since it is a bond, the strength may be insufficient.

  Therefore, the upper end of the shock absorber is composed of three orthogonal plane parts, that is, an upper end support bracket horizontal plane part 31, an upper end support bracket vertical face part 32 connected to the left rear pillar 13, and an upper end support bracket connection surface part 33 connected to the upper rear cross member 15. The support bracket 30 is coupled to the upper rear cross member 15 and the left rear pillar 13.

  As a result, since the three orthogonal planes are responsible for forces from multiple directions, the shock absorber upper end support bracket 30 reinforces the connection between the upper rear rear cross member 15 and the left rear pillar 13 by welding, and the vehicle body upper joint B Increase the strength of the joint.

Next, the effect will be described.
In the vehicle body rear structure of the electric vehicle according to the first embodiment, the following effects can be obtained.

  (1) A suspension arm support bracket 20 is used as a coupling member of a lower body coupling portion A for coupling the lower side member 11, the rear lower cross member 12, and the left rear pillar 13, A shock absorber upper end support bracket 30 that supports the rod of the shock absorber 40 of the rear suspension arm 60 is provided in the vicinity of the vehicle body upper joint B that is a connecting portion with the upper rear cross member 15.

  Further, the rear suspension arm 60 has a curved shape so that a middle portion thereof is positioned below a line connecting the both end portions.

As a result, even in the vehicle body structure 1 in which the rear portion of the vehicle body projects above the rear wheel 53 in order to secure the volume, it is possible to ensure the distance from the vehicle body frame without increasing the length of the suspension arm.
Therefore, even when the vehicle height is lowered to ensure maneuverability and stability, it is possible to reduce the overall length of the vehicle and reduce the weight of the vehicle body while avoiding interference between the suspension arm and the frame when the vehicle body sinks. It is possible to provide a rear body structure of an electric vehicle.

  In particular, in the case of an electric vehicle in which a motor and other accessory devices are provided on the suspension arm, interference between the motor and the frame when the vehicle body sinks can be avoided by providing a drive motor and other accessory devices on the curved portion of the suspension arm. This has a great effect on shortening the overall length of the vehicle and reducing the weight of the vehicle body.

  Further, since the rear suspension arm 60 is curved, it is possible to reduce the amount of protrusion of the suspension arm when the vehicle body sinks.

  Therefore, even in a rear wheel drive vehicle (RR, 4WD vehicle) in which the drive motor 80 is mounted on the rear suspension arm 60, it is easy to secure the volume of the rear trunk room.

  In particular, in the case of a front-wheel drive vehicle (FF vehicle), since the drive motor 80 does not exist, a remarkable effect can be brought about in securing the volume of the trunk room.

  (2) The shock absorber upper end support bracket 30 includes an upper end support bracket horizontal surface portion 31 for attaching the upper end of the suspension, a vertical surface portion 32 which is a fixing portion of the left rear pillar 13, and an upper end support bracket connecting surface portion 33 for attaching the upper rear cross member 15. The upper end support bracket horizontal plane portion 31 is integral with the upper end support bracket vertical surface portion 32 and the upper end support bracket connecting surface portion 33, and the upper end support bracket vertical surface portion 32 is fixed to the rear combination lamp to which the rear combination lamp 50 is attached. It has decided to have the part 32a.

  As a result, it is possible to create a reinforcing member for the upper joint portion of the vehicle body, an upper end support member for the rear suspension arm 60, and a rear combination lamp mounting member from a single plate material, which facilitates processing. In addition, the number of parts can be reduced, and cost reduction and ease of assembly can be realized at the same time.

  (3) The upper end support bracket vertical surface portion 32 extends from the upper end support bracket horizontal plane portion 31 and is connected to the left rear pillar 13, and the upper end support bracket connection surface portion 33 is a vertical plane extending in the longitudinal direction of the vehicle body. 15 to be connected.

  As a result, it is possible to handle the force applied to the vehicle body upper coupling portion B by a plurality of orthogonal plane portions, and strength in multiple directions can be ensured. Moreover, since it is a planar combination structure, weight reduction can also be achieved.

  (4) By using a wheel-in motor for driving the rear wheel, a vehicle body structure in which no driving means is provided inside the vehicle body structure is possible, and a small and lightweight vehicle body structure can be provided.

(Other examples)
Although the best mode for carrying out the present invention has been described based on the first embodiment, the specific configuration of the present invention is not limited to the first embodiment.

1 is an overall view of a vehicle body structure of Embodiment 1. FIG. FIG. 3 is a perspective view of a rear portion of the vehicle body structure according to the first embodiment. FIG. 3 is a side view of the rear part of the vehicle body structure according to the first embodiment. FIG. 3 is a top view of the rear suspension arm according to the first embodiment. FIG. 3 is a side view of the rear suspension arm according to the first embodiment. 1 is a cross-sectional perspective view of a rear suspension arm attached to a vehicle body structure of Embodiment 1. FIG. FIG. 3 is a top view of a rear suspension arm attached to the vehicle body structure of the first embodiment. It is a perspective view of the suspension arm support bracket of Example 1. FIG. 3 is a perspective view of a lower body coupling portion on the left side of the vehicle body of the first embodiment. It is a perspective view of the vehicle body upper part joint part at the time of attaching the shock absorber of Example 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car body structure 11 Lower side member 12 Rear lower cross member 12a 1st support part 13 Left rear pillar 14 Right rear pillar 15 Upper rear cross member 16 Reinforcement member 20 Suspension arm support bracket 21 2nd support part 22 Arm support Bracket left vertical surface portion 23 Arm support bracket right vertical surface portion 24 Arm support bracket horizontal surface portion 25 Left rear / lower / cross member connection portion 26 Right rear / lower / cross member connection portion 30 Shock absorber upper end support bracket 31 Upper end support bracket horizontal surface portion 31a Shock absorber upper end side support portion 32 Arm support bracket vertical surface portion 33 Arm support bracket connecting surface portion 40 Shock absorber 50 Rear combination lamp 60 Rear suspension arm 61 First cover Sandwiching member 62 second supported portion rear 63 rear wheel support portion 64 arm body 65 the shock absorber lower support 70 wheel 80 for driving the motor A vehicle body lower connection portion B vehicle body upper coupling portion

Claims (4)

Lower side members that extend in the longitudinal direction of the vehicle on the left and right of the lower part of the vehicle,
A rear lower cross member connecting the rear ends of these lower side members,
Left and right rear pillars raised upward from the rear end of the lower side member or both ends of the rear lower cross member;
An upper rear cross member for connecting the left and right rear pillars at a position above the rear lower cross member;
A vehicle body rear structure of an electric vehicle comprising:
A rear suspension arm support portion for a rear suspension arm for rotatably supporting a rear wheel on the rear lower cross member is provided,
The rear pillar has a lower end portion connected to the lower side member, rises from the lower end portion toward the rear of the vehicle body, and curves toward the front of the vehicle body above the connection portion with the upper rear cross member. Has a shape to
A suspension upper end side support portion for supporting a rod of a shock absorber of the rear suspension is provided at both ends of the upper rear cross member, or at least near the connection portion between the rear pillar and the upper rear cross member,
The rear suspension arm is a rear suspension arm that is supported by the rear suspension arm support portion of the rear lower cross member and has a curved shape so that a middle portion is positioned below a line connecting both ends. The vehicle body rear structure of the electric vehicle is a feature. The vehicle body rear part structure according to claim 1,
The vehicle body rear structure of an electric vehicle, wherein the upper end side support portion of the suspension is a suspension upper end side support bracket fixed to the upper, rear cross member, and rear pillar, respectively. In the rear body structure of the electric vehicle according to claim 2,
The suspension upper end side support bracket has a vertical flat portion along the longitudinal direction of the vehicle body,
The vertical plane portion is connected to the upper, rear, and cross member. In the vehicle body rear part structure according to any one of claims 1 to 3,
The vehicle rear structure for an electric vehicle, wherein the rear wheel is driven by a wheel-in motor or a motor provided on a suspension arm.

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