Rear axle assembly structure of electric vehicle

Abstract

The utility model provides a kind of rear axle assembly structure of electric vehicle, including rear axle body, further include: energy-absorbing component, set in the top of rear axle body, including the first spring plate being set in the top of rear axle body, the second spring plate being set in the bottom surface of each first spring plate, the connecting buffer structure for absorbing and preventing vibration force transmission to the rear axle body is set in each second spring plate outside for vibration force absorption;Anti-collision component, set in the lower of rear axle body, for the protection of rear axle body. By the energy-absorbing component being set, part of the force of vibration can be converted into thrust, while being able to consume part of the force of vibration, further reduce the force transmitted to the rear axle body, so as to avoid the deformation of the rear axle body, by the anti-collision component being set, the lower of rear axle body can be shielded, so as to prevent the rear axle body from being damaged by collision when the vehicle is running.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle rear axle technology, and in particular to a rear axle assembly structure for an electric vehicle. Background Technology

[0002] The rear axle of an electric vehicle is the core load-bearing and transmission component of the electric vehicle chassis. It consists of key structures such as a lightweight axle housing assembly, an integrated drive module, and a multi-link suspension system. It can bear the entire weight of the vehicle body and load, which not only achieves lightweight design to reduce energy consumption, but also improves the stability, comfort and safety of the vehicle, meeting the diverse usage needs of small electric passenger cars and electric trucks.

[0003] Application No. 202222283000.X specifically addresses the rear axle assembly structure of an electric vehicle. This invention addresses the problem that existing rear axle structures have poor shock absorption and cannot effectively reduce the impact on the rear axle during vehicle bumps. The proposed solution includes a transmission box. Mounting tubes are fixedly installed on both the left and right inner walls of the transmission box, with their ends extending to the left and right sides of the transmission box respectively. A drive motor is fixedly installed on the rear side of the transmission box. Oil seal rings are sealed and fixedly installed inside the mounting tubes. The two oil seal rings are rotatably connected to the same drive shaft. After installation on the vehicle body and the two mounting plates, the buffer pad, the arc-shaped spring steel plate, and the corresponding torsion spring are all under stress, thus providing cushioning support for the vehicle body and offering shock absorption protection during vehicle movement.

[0004] The above solution has shortcomings in use. When the mounting plate is vibrated and squeezes the arc-shaped spring steel plate downward, the bottom end of the arc-shaped spring steel plate will exert a downward thrust on the support cover. The support cover will then transfer the force to the rear axle, which may cause the rear axle housing to be subjected to excessive stress and deform. Therefore, we provide a rear axle assembly structure for electric vehicles. Utility Model Content

[0005] This utility model provides a rear axle assembly structure for an electric vehicle, which can convert some of the vibration force into thrust, and at the same time consume some of the vibration force, further reducing the force transmitted to the rear axle body, thereby avoiding deformation of the rear axle body.

[0006] The purpose and effect of this utility model's rear axle assembly structure for an electric vehicle are achieved by the following specific technical means: A rear axle assembly structure for an electric vehicle includes a rear axle body, and further includes:

[0007] An energy-absorbing assembly is disposed above the rear axle body, including a first spring plate disposed above the rear axle body, a second spring plate disposed on the bottom surface of each first spring plate, and a connecting buffer structure disposed outside each second spring plate for absorbing vibration force and preventing vibration force from being transmitted to the rear axle body.

[0008] The anti-collision component is located under the rear axle body and is used to protect the rear axle body.

[0009] Preferably, the connecting buffer structure includes two sets of support plates fixedly connected to the outer surface of the rear axle body, and each support plate has a deflection plate hinged to its other end. The top ends of each set of deflection plates are respectively hinged to the left and right ends of each second spring plate.

[0010] Preferably, a damping rod is hinged to the top of each of the support plates, and the top of each damping rod is hinged to the bottom surface of the second spring plate.

[0011] Preferably, each of the support plates has a groove on its upper surface, and a force-bearing plate is slidably connected to the inner wall of each groove. The top of each force-bearing plate is hinged to the bottom surface of the second spring plate, and a set of equidistant triangular grooves are provided on the side of each group of force-bearing plates that are close to each other.

[0012] Preferably, each of the sliding grooves has an installation groove on its inner wall, a first spring is fixedly connected to the inner wall of each installation groove, a triangular block is fixedly connected to the other end of each first spring, and the outer surface of each triangular block is slidably connected to the inner wall of the triangular groove.

[0013] Preferably, a limiting plate is fixedly connected to the bottom end of each of the force-bearing plates.

[0014] Preferably, each of the first spring plates has a mounting plate fixedly connected to its top end, and each mounting plate has a set of mounting holes on its upper surface.

[0015] Preferably, a sliding frame is hinged to the upper surface of each second spring plate, a second spring is fixedly connected to the inner wall of each sliding frame, a push plate is hinged to the other end of each second spring, and the top end of each push plate is hinged to the bottom surface of the mounting plate.

[0016] Preferably, the anti-collision assembly includes two sets of support blocks fixedly connected to the outer surface of the rear axle body, and the other end of the two sets of support blocks is fixedly connected to an anti-collision shell.

[0017] Preferably, a buffer pad is fixedly connected to the outer surface of the anti-collision shell.

[0018] Beneficial effects:

[0019] 1. The energy-absorbing components can convert some of the vibration force into thrust and also dissipate some of the vibration force, further reducing the force transmitted to the rear axle body, thereby preventing deformation of the rear axle body. The anti-collision components can shield the underside of the rear axle body, thus preventing collision damage to the rear axle body when the vehicle is in motion.

[0020] 2. The damping rod can dissipate the rebound force released by the first and second spring plates, thereby preventing high-frequency vibration. The limiting plate can limit the movement of the force plate to prevent the force plate from separating from the slide groove, thus ensuring the squeezing friction between the triangular block and the triangular groove, further ensuring the effect of absorbing and dissipating vibration force. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0022] Figure 2 This is a three-dimensional structural diagram of the energy-absorbing component of this utility model.

[0023] Figure 3 This is a three-dimensional structural diagram of the deflection plate of this utility model.

[0024] Figure 4 This is a three-dimensional structural schematic diagram of the cross section of the load-bearing plate of this utility model.

[0025] Figure 5 This is a three-dimensional structural schematic diagram of the sliding frame of this utility model, shown in a cross-sectional view.

[0026] Figure 6 This is a three-dimensional structural diagram of the anti-collision shell of this utility model.

[0027] Figure 1-6 In the diagram, the correspondence between component names and drawing numbers is as follows:

[0028] 1. Rear axle body; 2. Energy absorption assembly; 201. First spring plate; 202. Second spring plate; 203. Support plate; 204. Deflection plate; 205. Damping rod; 206. Slide groove; 207. Force plate; 208. Triangular groove; 209. Mounting groove; 210. First spring; 211. Triangular locking block; 212. Limiting plate; 213. Mounting plate; 214. Slide frame; 215. Second spring; 216. Push plate; 3. Anti-collision assembly; 301. Support block; 302. Anti-collision shell; 303. Buffer pad. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0030] First Embodiment

[0031] As attached Figure 1 To be continued Figure 5 As shown: A rear axle assembly structure for an electric vehicle includes a rear axle body 1 and an energy-absorbing component 2 disposed above the rear axle body 1. The component includes a first spring plate 201 disposed above the rear axle body 1 and a second spring plate 202 disposed on the bottom surface of each first spring plate 201. A mounting plate 213 is fixedly connected to the top of each first spring plate 201. A set of mounting holes is provided on the upper surface of each mounting plate 213. By using the cooperation between the mounting plate 213 and the mounting holes, the first spring plate 201 can be connected and fixed to the vehicle frame.

[0032] A connecting buffer structure is installed on the outside of each second spring plate 202 to absorb vibration and prevent vibration from being transmitted to the rear axle body 1. The connecting buffer structure includes two sets of support plates 203 fixedly connected to the outer surface of the rear axle body 1. Each support plate 203 has a deflection plate 204 hinged to the other end. The top of each set of deflection plates 204 is hinged to the left and right ends of each second spring plate 202 respectively. When the vehicle vibrates, the vibration force will be transmitted from both ends of the first spring plate 201 to the middle part of the first spring plate 201 through the mounting plate 213. The middle part of the first spring plate 201 will be pushed by the force and the force will be transmitted to both ends of the second spring plate 202. The second spring plate 202 will deform and push the deflection plate 204 to deflect on the support plate 203, converting the vibration force into a force that pushes the deflection plate 204 to deflect.

[0033] Each second spring plate 202 has a sliding frame 214 hinged to its upper surface. Each sliding frame 214 has a second spring 215 fixedly connected to its inner wall. Each second spring 215 has a push plate 216 hinged to its other end. The top of each push plate 216 is hinged to the bottom surface of the mounting plate 213. When the mounting plate 213 is subjected to vibration, the push plate 216 will squeeze the second spring 215, so that the second spring 215 can absorb part of the vibration.

[0034] Each support plate 203 has a groove 206 on its upper surface. A force-bearing plate 207 is slidably connected to the inner wall of each groove 206. The top of each force-bearing plate 207 is hinged to the bottom surface of the second spring plate 202. A set of equidistant triangular grooves 208 are provided on the side of each set of force-bearing plates 207 that are close to each other. Each groove 206 has an installation groove 209 on its inner wall. A first spring 210 is fixedly connected to the inner wall of each installation groove 209. A triangular locking block 211 is fixedly connected to the other end of each first spring 210. The outer surface of each triangular locking block 211 is slidably connected to the inner wall of the triangular groove 208. When the second spring plate 202 deforms, it pushes the force-bearing plate 207 downwards, and the triangular grooves 208 on the force-bearing plate 207 compress the triangular grooves 208. The corner block 211 compresses the first spring 210. The triangular block 211 reciprocates and disengages into the triangular groove 208, thus converting part of the vibration force into the frictional force between the triangular groove 208 and the triangular block 211. This further prevents the vibration force from being transmitted to the rear axle body 1, effectively preventing its deformation. Each support plate 203 has a damping rod 205 hinged to its top. The top of each damping rod 205 is hinged to the bottom surface of the second spring plate 202. When the deformation force of the first spring plate 201 and the second spring plate 202 is released, the damping rod 205 will pull it, and the triangular block 211 will also reciprocate and insert into the triangular groove 208 as the force plate 207 moves upward. This can absorb and consume the rebound force, thus preventing high-frequency vibration.

[0035] Each load-bearing plate 207 is fixedly connected to a limiting plate 212 at its bottom end. The limiting plate 212 can prevent the load-bearing plate 207 from detaching from the slide groove 206, thereby ensuring the squeezing friction between the triangular block 211 and the triangular groove 208, and further ensuring the effect of absorbing and consuming vibration force.

[0036] Second Embodiment

[0037] As attached Figure 1 With appendix Figure 6 As shown: Anti-collision component 3, disposed below the rear axle body 1, is used to protect the rear axle body 1. Anti-collision component 3 includes two sets of support blocks 301 fixedly connected to the outer surface of the rear axle body 1. The other end of the two sets of support blocks 301 is fixedly connected to an anti-collision shell 302. The support blocks 301 can stabilize the anti-collision shell 302 below the rear axle body 1, thereby forming a shielding protection for the rear axle body 1 and preventing it from being damaged by collision. A buffer pad 303 is fixedly connected to the outer surface of the anti-collision shell 302. The buffer pad 303 can absorb and buffer the force of the collision of the anti-collision shell 302, further preventing the anti-collision shell 302 from being damaged by collision.

[0038] Working principle: When vibration occurs, the mounting plate 213 transmits force from both ends of the first spring plate 201 to the middle part of the first spring plate 201. The middle part of the first spring plate 201 is then pushed by the force to push the middle part of the second spring plate 202, and the force is transmitted to both ends of the second spring plate 202. At the same time, the mounting plate 213 pushes the push plate 216 to compress the second spring 215, which can absorb part of the force. Simultaneously, the second spring plate 202 deforms and pushes the deflection plate 204 to deflect on the support plate 203, converting the vibration force into a force that pushes the deflection plate 204 to deflect. Furthermore, the deformation of the second spring plate 202 pushes the force plate 207 to descend. The triangular groove 208 on the force plate 207 will squeeze the triangular block 211 to compress the first spring 210. The triangular block 211 reciprocates and enters the triangular groove 208, thus converting part of the vibration force into the friction force between the triangular groove 208 and the triangular block 211, further preventing the vibration force from being transmitted to the rear axle body 1, effectively preventing its deformation. When the first spring plate 201 and the second spring plate 202 release their elastic force to reset, the damping rod 205 will pull the second spring plate 202, and the triangular block 211 will block and buffer the upward movement of the force plate 207, thereby preventing it from vibrating at high frequency.

Claims

1. A rear axle assembly structure for an electric vehicle, comprising a rear axle body (1), characterized in that, Also includes: Energy absorption assembly (2) is disposed above the rear axle body (1), including a first spring plate (201) disposed above the rear axle body (1), a second spring plate (202) disposed on the bottom surface of each first spring plate (201), and a connecting buffer structure disposed outside each second spring plate (202) for absorbing vibration force and preventing vibration force from being transmitted to the rear axle body (1). The anti-collision component (3) is located below the rear axle body (1) and is used to protect the rear axle body (1).

2. The rear axle assembly structure of the electric vehicle according to claim 1, characterized in that: The connection buffer structure includes two sets of support plates (203) fixedly connected to the outer surface of the rear axle body (1). Each support plate (203) has a deflection plate (204) hinged to its other end. The top of each set of deflection plates (204) is hinged to the left and right ends of each second spring plate (202).

3. The rear axle assembly structure of the electric vehicle according to claim 2, characterized in that: Each of the support plates (203) has a damping rod (205) hinged to its top end, and the top end of each of the damping rods (205) is hinged to the bottom surface of the second spring plate (202).

4. The rear axle assembly structure of the electric vehicle according to claim 2, characterized in that: Each of the support plates (203) has a groove (206) on its upper surface. Each groove (206) has a force plate (207) slidably connected to its inner wall. The top of each force plate (207) is hinged to the bottom surface of the second spring plate (202). Each set of force plates (207) has a set of triangular grooves (208) arranged at equal intervals on the side of each set of force plates (207) that are close to each other.

5. The rear axle assembly structure of the electric vehicle according to claim 4, characterized in that: Each of the slide grooves (206) has an installation groove (209) on its inner wall. Each of the installation grooves (209) has a first spring (210) fixedly connected to its inner wall. Each of the first springs (210) has a triangular block (211) fixedly connected to its other end. The outer surface of each triangular block (211) is slidably connected to the inner wall of the triangular groove (208).

6. The rear axle assembly structure of the electric vehicle according to claim 4, characterized in that: A limiting plate (212) is fixedly connected to the bottom end of each of the force-bearing plates (207).

7. The rear axle assembly structure of the electric vehicle according to claim 1, characterized in that: Each of the first spring plates (201) has a mounting plate (213) fixedly connected to its top end, and each mounting plate (213) has a set of mounting holes on its upper surface.

8. The rear axle assembly structure of the electric vehicle according to claim 1, characterized in that: Each of the second spring plates (202) has a sliding frame (214) hinged to its upper surface. Each of the sliding frames (214) has a second spring (215) fixedly connected to its inner wall. Each of the second springs (215) has a push plate (216) hinged to its other end. The top of each push plate (216) is hinged to the bottom surface of the mounting plate (213).

9. The rear axle assembly structure of the electric vehicle according to claim 1, characterized in that: The anti-collision component (3) includes two sets of support blocks (301) fixedly connected to the outer surface of the rear axle body (1), and the other end of the two sets of support blocks (301) is fixedly connected to an anti-collision shell (302).

10. The rear axle assembly structure of the electric vehicle according to claim 9, characterized in that: A buffer pad (303) is fixedly connected to the outer surface of the anti-collision shell (302).

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