Vehicle rear drive rear suspension arrangement

Abstract

The utility model discloses a vehicle rear drive type rear suspension device for realizing the connection of vehicle rear wheel and frame rear end, and the structure includes drive shaft, and the both ends of drive shaft are connected with a rear wheel respectively, and motor is used for and drive shaft transmission connection, and its characterized in that, hollow rear axle pipe is sleeved on the outer periphery of drive shaft, and the relative circumferential rotation connection between rear axle pipe and drive shaft is realized through bearing, motor is fixed on rear axle pipe, and the transmission connection between motor power output shaft and drive shaft is realized through transmission mechanism, and the lower end of vertical rear support plate is fixed with rear axle pipe, and the upper end of rear support plate is used for and frame is hinged, and the rear end of horizontal rear shock is connected on rear axle pipe, and the front end of rear shock is used for and frame is connected, and the rear shock and rear support plate have included angle between them. The compactness of the structure of this rear suspension device is good, and it is convenient to provide stable support for vehicle.

Description

Technical Field

[0001] This utility model relates to a vehicle rear suspension device for connecting the rear wheels, and more particularly to a vehicle rear-wheel drive type rear suspension device. Background Technology

[0002] A vehicle consists of a frame, with the front wheels rotatably connected to the front end and the rear wheels rotatably connected to the rear end. To achieve this connection, a rear suspension is typically located on the lower rear side of the frame, with the rear end of the frame supported by the rear suspension. For rear-wheel-drive vehicles, a power receiving structure is required on the rear suspension, or the power source is directly mounted on it. In new energy vehicles, the electric motor provides the driving force; in rear-wheel-drive vehicles, the motor is either directly mounted at the rear wheel hub or on the rear suspension. To achieve shock absorption, a rear shock absorber is vertically mounted between the rear suspension and the frame to reduce vibrations caused by road bumps.

[0003] Chinese patent document (authorization announcement number: CN 208216426U) discloses a rear suspension rear-drive mechanism for a vehicle, including a rear wheel hub assembly, a half shaft, an upper bracket assembly, a lower bracket assembly, and a rear shock absorber. The rear wheel hub assembly includes a rear wheel hub, a bearing, a steering knuckle, and a disc brake pad. The lower bracket assembly includes a lower bracket body, a second ball joint, a fixing plate, a hanger, and a fixing pin. The lower bracket body includes two second links, one end of which is connected to each other in a V-shape. The fixing plate connects the two second links. Each second link has a guide groove along its length on the side closest to the fixing plate. The fixing plate is slidably connected to the second link through the guide groove. The opening angle between the two second links can be adjusted by adjusting the relative position of the fixing plate and the second link to adapt to different vehicle models.

[0004] In this type of rear suspension and rear-drive mechanism, the overall structural compactness is relatively poor, and the rear shock absorber is also set vertically, which causes relatively more damage to the rear shock absorber and poor stability during use. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a rear-wheel drive rear suspension device for vehicles, which is different from the traditional structure and has good compactness.

[0006] To solve the aforementioned technical problem, the present invention provides the following technical solution: a rear-wheel drive rear suspension device for a vehicle, comprising a drive shaft, with a rear wheel connected to each end of the drive shaft, and a motor for transmission connection with the drive shaft. The device is characterized in that a hollow rear axle tube is sleeved around the outer periphery of the drive shaft, and the rear axle tube and the drive shaft are connected for relative circumferential rotation via bearings; the motor is fixed to the rear axle tube, and the motor's power output shaft is connected to the drive shaft via a transmission mechanism; the lower end of a vertically mounted rear support plate is fixed to the rear axle tube, and the upper end of the rear support plate is hinged to the vehicle frame; the rear end of a horizontally mounted rear shock absorber is connected to the rear axle tube, and the front end of the rear shock absorber is connected to the vehicle frame, with an included angle between the rear shock absorber and the rear support plate.

[0007] The terms "front" and "rear" are based on the vehicle's orientation, with the front wheels positioned in front and the rear wheels in the rear. The included angle is approximately 90 degrees. The upper end of the rear support plate is hinged to the frame, and combined with the horizontally mounted rear shock absorber, it provides shock absorption for the vehicle.

[0008] Furthermore, a hollow connecting seat is provided at the midpoint of the drive shaft's length. The drive shaft passes through the connecting seat, and the motor is fixed to the connecting seat. The transmission mechanism passes through the connecting seat to realize the transmission connection between the motor's power output shaft and the drive shaft. The connecting seat facilitates the fixing of the motor and ensures stable power transmission between the motor and the drive shaft.

[0009] Furthermore, the rear axle tube is divided into two sections, which are respectively connected to opposite sides of the connecting seat. There is a gap between the near ends of the two connecting seats, and the transmission mechanism is located at this gap. Designing the rear axle tube as a segment facilitates the installation of the transmission mechanism.

[0010] Furthermore, the connecting seat is provided with a port facing the transmission mechanism, and a cover is detachably provided over the port. This allows for maintenance of the transmission mechanism and the injection of lubricating oil into the connecting seat through the port.

[0011] Furthermore, a brake disc, which is basin-shaped, is fixedly connected to each end of the drive shaft. The bottom of the coupling is used to fit and fix with the wheel hub of the rear wheel, which can well adapt to the connection and fixation of the rear wheel. By setting a braking structure on the rear axle tube that acts on the brake disc, braking of the rear wheel can be achieved. The basin-shaped brake disc facilitates the setting and operation of the braking structure.

[0012] Furthermore, several through holes are provided on the side wall of the brake disc. The through holes can effectively reduce the amount of material used in the brake disc and reduce its weight.

[0013] Furthermore, it also includes a balance bar, the rear end of which is connected to the rear axle tube, and the front end of which is used to connect to the frame. The balance bar is angled relative to the drive shaft. The balance bar is designed to prevent the rear suspension from swaying left and right relative to the frame, and it can adapt well to the setup of the rear skid plate and rear shock absorber, further improving the stability of the rear suspension relative to the frame.

[0014] Furthermore, a vertical rod is fixedly connected to the rear axle tube, and a hinge seat is fixedly connected to the vertical rod. The rear end of the balance rod is hinged to the hinge seat. The vertical rod facilitates the connection of the balance rod.

[0015] Furthermore, the lower end of the rear support plate is connected to a fixed base. The fixed base has a U-shaped cross-section and an arc-shaped connecting interface. The connecting interface is welded and fixed to the outer circumference of the rear axle tube. The fixed base facilitates the connection and fixation between the rear support plate and the rear axle tube, and the connection stability of the fixed base on the rear axle tube is good.

[0016] Compared with existing technologies, this utility model has the following advantages: In this rear suspension device, power transmission is achieved by connecting the rear axle tube to the drive shaft and through the arrangement of the motor and transmission mechanism, resulting in a compact overall structure. The novel structure, with its angled rear support plate and rear shock absorber, effectively ensures good shock absorption for the vehicle while minimizing damage to the rear shock absorber. The transmission mechanism effectively accommodates the motor's transmission requirements to the drive shaft. Attached Figure Description

[0017] Figure 1 This is a three-dimensional view of the rear-wheel drive rear suspension system of this vehicle from one direction.

[0018] Figure 2 This is a perspective view of the rear-wheel drive rear suspension system of this vehicle from another angle.

[0019] Figure 3 yes Figure 2 Exploded view.

[0020] In the diagram, 1. Rear support plate; 2. Brake disc; 21. Through hole; 3. Connecting bolt; 4. Rear shock absorber; 5. Motor; 6. Connecting seat; 61. Cover; 7. Rear axle tube; 8. Balance rod; 9. Hinge seat; 10. Upright pole; 11. Reinforcing plate; 12. Fixing seat. Detailed Implementation

[0021] Referring to the accompanying drawings, the rear-wheel-drive rear suspension of this vehicle is located on the lower rear end of the vehicle frame, providing both support for the frame and drive connection to the rear wheels. The rear suspension structure includes a drive shaft, which runs along the width of the frame. A rear wheel is connected to each end of the drive shaft. As shown in the diagram, a brake disc 2 is fixed to each end of the drive shaft. The brake disc 2 is basin-shaped, with a single cylindrical body, a circular bottom, and an annular edge. Several connecting bolts 3 are threaded through the bottom of the brake disc 2, allowing it to engage with the end face of the rear wheel hub. These connecting bolts 3 can also be rivets. To reduce weight and facilitate the work on the connecting bolts 3, several rectangular through holes 21 are provided on the side wall of the brake disc 2 body, evenly spaced around its circumference.

[0022] A hollow rear axle tube 7 is sleeved around the outer circumference of the drive shaft. Several ball bearings are installed between the rear axle tube 7 and the drive shaft, allowing the drive shaft to rotate circumferentially relative to the rear axle tube 7. A hollow connecting seat 6 is located at the midpoint of the drive shaft's length, through which the drive shaft passes. The motor 5 is fixed to the connecting seat 6, and a transmission mechanism passes through the connecting seat 6 to achieve the transmission connection between the motor 5's power output shaft and the drive shaft. The transmission mechanism can be a transmission belt, a transmission gear set, or a worm gear structure. The rear axle tube 7 consists of two sections, coaxially arranged, and connected to opposite sides of the connecting seat 6. The rear axle tube 7 and the connecting seat 6 are circumferentially fixed relative to each other.

[0023] There is a gap between the adjacent ends of the two connecting seats 6, and the transmission mechanism is located at this gap. A through-hole is provided on the connecting seat 6, which faces the transmission mechanism. A cover 61, which is detachably covered by the through-hole, is shaped like a cover.

[0024] The lower end of the vertically mounted rear support plate 1 is fixed to the rear axle tube 7, and the upper end of the rear support plate 1 is hinged to the frame, providing support for the rear end of the frame. There are two rear support plates 1, separated by the outer ends of the two rear axle tubes 7. The rear ends of two horizontally mounted rear shock absorbers 4 are connected to the rear axle tubes 7, with the connections of the two shock absorbers 4 to the rear axle tubes 7 located near the lower ends of the two rear support plates 1. The front ends of the shock absorbers 4 are connected to the frame, and there is an angle between the shock absorbers 4 and the rear support plate 1, typically close to 90 degrees.

[0025] A vertical rod 10 is fixedly connected to the rear axle tube 7, and a vertical reinforcing plate 11 is welded and fixed between the lower end of the vertical rod 10 and the rear axle tube 7. A hinge seat 9 is fixedly connected to the vertical rod 10, the rear end of the balance rod 8 is hinged to the hinge seat 9, the front end of the balance rod 8 is used to connect to the frame, and the balance rod 8 is obliquely arranged relative to the drive shaft.

[0026] The lower end of the rear support plate 1 is connected to the fixed seat 12, which is formed by folding an iron plate and has a U-shaped cross-section. An arc-shaped connecting interface is machined on the back of the fixed seat 12, and the interface is welded and fixed to the outer circumference of the rear axle tube 7. The lower end of the rear support plate 1 is inserted into the fixed seat 12, and the connection between the lower end of the rear support plate 1 and the fixed seat 12 is achieved by connecting bolts 3 passing through the side wall of the fixed seat 12 and the lower end of the rear support plate 1.

Claims

1. A rear-wheel drive rear suspension device for a vehicle, comprising a drive shaft, with a rear wheel connected to each end of the drive shaft, and a motor for transmission connection with the drive shaft, characterized in that, A hollow rear axle tube is fitted around the outer periphery of the drive shaft, and the rear axle tube and the drive shaft are connected to each other in a circumferential rotational manner through bearings; the motor is fixed on the rear axle tube, and the motor power output shaft is connected to the drive shaft through a transmission mechanism; the lower end of the vertically mounted rear support plate is fixed to the rear axle tube, and the upper end of the rear support plate is used to hinge to the frame; the rear end of the horizontally mounted rear shock absorber is connected to the rear axle tube, and the front end of the rear shock absorber is used to connect to the frame, and there is an angle between the rear shock absorber and the rear support plate.

2. The vehicle rear-wheel drive rear suspension device according to claim 1, characterized in that, A hollow connecting seat is provided at the middle position along the length of the drive shaft. The drive shaft passes through the connecting seat, and the motor is fixed on the connecting seat. The transmission mechanism passes through the connecting seat to realize the transmission connection between the motor power output shaft and the drive shaft.

3. The vehicle rear-wheel drive rear suspension device according to claim 2, characterized in that, The rear axle tube consists of two sections, which are respectively connected to opposite sides of the connecting seat. There is a gap between the close ends of the two connecting seats, and the transmission mechanism is located at this gap.

4. The vehicle rear-wheel drive rear suspension device according to claim 3, characterized in that, The connecting seat is provided with a through port, which faces the transmission mechanism, and a cover is detachably covered on the through port.

5. The vehicle rear-wheel drive rear suspension device according to any one of claims 1 to 4, characterized in that, A brake disc is fixed to each end of the drive shaft. The brake disc is basin-shaped.

6. The rear-wheel drive rear suspension device according to claim 5, characterized in that, Several through holes are provided on the side wall of the brake disc.

7. The vehicle rear-wheel drive rear suspension device according to any one of claims 1 to 4, characterized in that, It also includes a balance bar, the rear end of which is connected to the rear axle tube, and the front end of which is used to connect to the frame. The balance bar is set at an angle relative to the drive shaft.

8. The vehicle rear-wheel drive rear suspension device according to claim 7, characterized in that, A vertical rod is fixedly connected to the rear axle tube, and a hinge seat is fixedly connected to the vertical rod. The rear end of the balance tie rod is hinged to the hinge seat.

9. The vehicle rear-wheel drive rear suspension device according to any one of claims 1 to 4, characterized in that, The lower end of the rear support plate is connected to the fixed seat. The cross-section of the fixed seat is U-shaped. An arc-shaped connection interface is provided on the fixed seat. The connection interface is welded and fixed to the outer circumference of the rear axle tube.

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