Locking device

Abstract

The invention provides a locking device, which is used for locking a battery module in a tube body of a frame and comprises a battery shaft, a lockset and a locking assembly, the battery shaft is arranged on the end face of the battery module. And a lock pin is arranged at one end of the lock. The locking assembly is arranged in the pipe body and comprises a stop piece, one end of the stop piece is provided with a stop block, the other end of the stop piece is provided with a release block, one side of the stop block is provided with a contact face, and the other side of the stop block is provided with a stop face. The battery shaft pushes the contact surface in the first axial direction, the stop piece is linked to pivot, and the stop surface limits the battery shaft to be located at the locking position. And the lock pin pushes the release block and links the stop piece to pivot, so that the battery shaft is allowed to be separated from the locking position in the second axial direction.

Description

Technical Field

[0001] The present invention relates to a locking device, and in particular to a locking device for locking a battery module in a tube body of a vehicle frame. Background Art

[0002] The battery module of a general electric bicycle is usually installed on the frame (such as the down tube). Since the space of the frame tube is relatively narrow, the space configuration and user operation habits must be considered when designing how to lock the battery module on the frame. For example, when the user wants to remove the battery module from the down tube for repair or replacement, if the user forgets to hold the battery module with the other hand after unlocking it with one hand, the battery module may fall directly, causing damage to the battery module or injury to the user.

[0003] Therefore, the present invention aims at the above-mentioned problems of the prior art and further proposes a locking device to solve the problems caused by the prior art. Summary of the invention

[0004] The main purpose of the present invention is to provide a locking device which can stably lock a battery module and has a high reliability and a simple structure and can be arranged in a limited space, so as to facilitate users to lock or unlock and remove the battery module.

[0005] According to the purpose of the present invention, the present invention provides a locking device for locking a battery module in a tube body of a vehicle frame, wherein the locking device comprises:

[0006] A lock, wherein a lock pin is provided at one end of the lock;

[0007] A battery axis, disposed on an end surface of the battery module; and

[0008] The locking assembly is disposed in the tube body and includes:

[0009] A stopper, wherein one end of the stopper has a stopper block, the other end of the stopper has a release block, one side of the stopper block has a contact surface, and the other side has a stopper surface; wherein,

[0010] The battery shaft pushes the contact surface in a first axial direction to link the stopper to pivot, and the battery shaft is restricted by the stopper surface to be located at a locked position; and

[0011] The locking pin pushes the release block and drives the stopper to pivot, allowing the battery shaft to escape from the locking position in a second axial direction.

[0012] The locking device, wherein the contact surface has a first inclined surface and a first plane, the bottom end of the first inclined surface is connected to one end of the first plane, and during the process in which the battery shaft pushes the contact surface in the first axial direction,

[0013] The battery shaft pushes the first inclined surface, and the battery shaft moves along the first inclined surface and the first plane until the battery shaft passes through the first plane and the stopper pivots, so that the battery shaft is located at the locking position.

[0014] In the locking device, the stop member further comprises a connecting rod, one end of the connecting rod is connected to the stop block, and the other end of the connecting rod is connected to the release block.

[0015] The locking device, wherein the stopper further comprises a snap-fitting groove, wherein the snap-fitting groove is arranged at one end of the connecting rod close to the stopper block, wherein the end of the stopper block has a protrusion, and the protrusion is snap-fitted into the snap-fitting groove, wherein:

[0016] When the battery shaft pushes the contact surface in the first axial direction, the stop block moves upward and the protrusion slides in the engaging groove.

[0017] The locking device, wherein the stopper also includes a first rotating shaft, the first rotating shaft is arranged between the stop block and the release block, and the stopper rotates in the first rotating direction or the second rotating direction with the first rotating shaft as the axis.

[0018] The locking device, wherein the battery shaft is provided with a first locking hole, and the stop block is engaged in the first locking hole.

[0019] The locking device, wherein the locking assembly includes a sliding buffer, the battery shaft is provided with a second locking hole, and the second locking hole corresponds to one side of the sliding buffer; wherein,

[0020] When the battery shaft pushes the stop block to move upward, the battery shaft abuts against one end of the sliding buffer, and the end of the sliding buffer is engaged in the second locking hole, so that the sliding buffer starts to move until the battery shaft enters the locking position;

[0021] In the process that the locking pin pushes the release block and links the stopper to pivot, the sliding buffer is reset and pushes the battery shaft to escape from the tube body.

[0022] The locking device, wherein the sliding buffer comprises a first abutment block, a second abutment block and a linear elastic member, the first abutment block is located above the second abutment block, and the linear elastic member is arranged between the second abutment block and the tube body.

[0023] The locking device, wherein the sliding buffer includes a third abutment block, the third abutment block is located below the stop surface, and the third abutment block abuts against one end of the second abutment block in an initial state. When the battery shaft abuts against the first abutment block, the second abutment block begins to move and away from the third abutment block.

[0024] The locking device, wherein, in the initial state, the first abutting block protrudes beyond the third abutting block in the second axial direction and does not exceed the stop surface of the stop block.

[0025] According to the purpose of the present invention, the present invention further provides a locking device for locking a battery module in a tube body of a vehicle frame, wherein the locking device comprises:

[0026] A lock, wherein a lock pin is provided at one end of the lock;

[0027] A battery axis, disposed on an end surface of the battery module; and

[0028] Locking assembly, comprising:

[0029] a first stopper, wherein one end of the first stopper has a first stop block, the other end of the first stop block has a first release block, one side of the first stop block has a first contact surface, and the other side of the first stop block has a first stop surface; and

[0030] The second stopper is located below the first stopper, and one end of the second stopper has a second stopper block, one side of the second stopper block has a second contact surface, and the other side has a second stopper surface; wherein,

[0031] The battery shaft pushes the second contact surface in the first axial direction, causing the second stopper to pivot, until the battery shaft passes over the second stopper and enters the second locking position, and the battery shaft is limited by the second stopper to be located at the second locking position, the battery shaft continues to move forward along the first axial direction and pushes the first contact surface, causing the first stopper to pivot, until the battery shaft passes over the first stopper and reaches the first locking position, and the battery shaft is limited by the first stopper to be located at the first locking position; and

[0032] The locking pin pushes the first release block and links the first stopper to pivot, allowing the battery shaft to disengage from the first locking position in the second axial direction and move toward the second locking position.

[0033] The locking device, wherein the locking assembly further comprises:

[0034] The pressing member is located between the two ends of the second stopper; wherein,

[0035] When the battery shaft is located at the second locking position, the pressing member is pressed by an external force to pivot the second stopper, and the battery shaft is separated from the second locking position.

[0036] The locking device, wherein the second stopper forms a protruding column in the lateral direction, and the locking assembly further comprises:

[0037] A pressing member is located between the two ends of the second stopper, and the pressing member includes a push rod and a joint portion, wherein the push rod is connected to the joint portion, and the joint portion is engaged with the protruding column, wherein:

[0038] When the push rod is displaced longitudinally downward by an external force, the engaging portion drives the protruding column to displace downward, so that the battery shaft is released from the second locking position.

[0039] The locking device, wherein the first stop member further includes a connecting rod, one end of the connecting rod is connected to the first stopping block, and the other end of the connecting rod is connected to the first releasing block.

[0040] The locking device, wherein the first stopper further comprises a snap-fitting groove, the snap-fitting groove is arranged at one end of the connecting rod close to the first stopper, the end of the first stopper has a protrusion, the protrusion is snap-fitted in the snap-fitting groove, wherein,

[0041] When the battery shaft pushes the first contact surface in the first axial direction, the first stop block moves upward and the protrusion slides in the engaging groove.

[0042] The locking device, wherein the first contact surface has a first inclined surface and a first plane, the bottom end of the first inclined surface is connected to one end of the first plane, the second contact surface has a second inclined surface and a second plane, the bottom end of the second inclined surface is connected to one end of the second plane, and during the process in which the battery shaft pushes the second contact surface in the first axial direction,

[0043] The battery shaft pushes the second inclined plane, and the battery shaft moves along the second inclined plane and the second plane to cause the second stopper to pivot, and the battery shaft pushes the first inclined plane, and the battery shaft moves along the first inclined plane and the first plane until the battery shaft passes through the first plane and the first stopper pivots, so that the battery shaft is located in the first section locking position.

[0044] The locking device described above, wherein the first stop member also includes a first rotating shaft, which is arranged between the first stop block and the first release block, and the second stop member also includes a second rotating shaft, which is arranged at an end away from the second stop block, and the first stop member rotates in the first rotation direction or in the second rotation direction with the first rotating shaft as the axis, and the second stop member rotates in the second rotation direction with the second rotating shaft as the axis.

[0045] The locking device, wherein the battery shaft is provided with a first locking hole and a third locking hole, the first locking hole is located above the battery shaft, the third locking hole is located below the battery shaft, the first stop block is engaged in the first locking hole, and the second stop block is engaged in the third locking hole.

[0046] As described above, compared with the prior art, the locking device of the present invention can prevent the user from being accidentally hit by the battery module when unlocking the battery module, and at the same time overcome the problem of limited space in the electric bicycle frame tube body, providing a locking device with simple structure, low cost but high reliability.

[0047] The following examples illustrate preferred embodiments of the present invention, and are described in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1A is a schematic diagram of a first embodiment of a locking device of the present invention;

[0049] Figure 1B for Figure 1A Sectional view along the A-A' line;

[0050] Figure 1C for Figure 1B A magnified schematic diagram of the local R1 in the middle;

[0051] Figure 2A Schematic diagram 1 of another embodiment of the stopper of the present invention;

[0052] Figure 2B Schematic diagram 2 of another embodiment of the stopper of the present invention;

[0053] Figure 3 A schematic diagram of state changes of the first embodiment of the locking device of the present invention;

[0054] Figure 4A is an application schematic diagram of the second embodiment of the locking device of the present invention;

[0055] Figure 4B is a schematic diagram of a second embodiment of a locking device of the present invention;

[0056] Figure 5A for Figure 4B Sectional view along the B-B' line;

[0057] Figure 5B for Figure 5A A magnified schematic diagram of the local R2 in the middle;

[0058] Figure 6 A schematic diagram of state changes of a second embodiment of a locking device of the present invention;

[0059] Figure 7 A schematic diagram of state changes of a third embodiment of a locking device of the present invention;

[0060] Figure 8 is a schematic diagram of a fourth embodiment of a locking device of the present invention;

[0061] Fig.9A It is an application schematic diagram 1 of the fourth embodiment of the locking device of the present invention;

[0062] Fig. 9B FIG. 2 is an application schematic diagram of the fourth embodiment of the locking device of the present invention.

[0063] Description of reference numerals: 80 frame; 82 tube body; 90 battery module; 90A end face; 1A, 1B, 1C, 1D locking device; 10, 10', 10" battery axis; 12 first locking hole; 14 second locking hole; 16 third locking hole; 20 lock; 22 locking pin; 30, 30', 40, 40' locking assembly; 32 stopper; 322 stopper block; 324 release block; 326 connecting rod; 328 engaging groove; 322A contact surface; S1 first inclined surface; F1 first plane; 322B stopper surface; 322C protrusion; 329, 429 first rotation axis; C1 first rotation direction; C2 second rotation direction; 34 sliding Dynamic buffer member; 342 first abutment block; 344 second abutment block; 34A linear elastic member; 346 third abutment block; 42 first stop member; 422 first stop block; 424 first release block; 422A first contact surface; 422B first stop surface; 45 second stop member; 452 second stop block; 452A second contact surface; 452B second stop surface; 455 protruding column; 458 second rotating axis; 47, 47' pressing member; 472 push rod; 474 joint; AXL_1 first axial direction; AXL_2 second axial direction; Lock_1 first section locking position; Lock_2 second section locking position. DETAILED DESCRIPTION

[0064] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the detailed description of the present invention below, some specific details are described in detail. For those skilled in the art, the present invention can be fully understood without the description of these details. In order to avoid confusing the essence of the present invention, known methods, processes, flows, components and circuits are not described in detail.

[0065] The embodiments of the present invention will be further explained below with reference to the accompanying drawings. As much as possible, the same reference numerals in the drawings and the specification represent the same or similar components. In the drawings, shapes and thicknesses may be exaggerated for simplicity and convenience. It is understood that the components not specifically shown in the drawings or described in the specification are known to those of ordinary skill in the art. Those of ordinary skill in the art may make various changes and modifications based on the contents of the present invention.

[0066] See also Figures 1A to 1C The locking device 1A is used to lock the battery module 90 in the tube body of the frame. The locking device 1A includes a battery shaft 10, a lock 20 and a locking assembly 30. The battery shaft 10 is arranged on the end surface 90A of the battery module 90, and the battery shaft 10 is provided with a locking hole 12. A locking pin 22 is provided at one end of the lock 20. The locking assembly 30 includes a stopper 32, which is pivotally arranged in the tube body of the frame. One end of the stopper 32 has a stopper block 322, and the other end of the stopper 32 has a release block 324. One side of the stopper block 322 has a contact surface 322A, and the other side has a stopper surface 322B.

[0067] The battery shaft 10 pushes the contact surface 322A in the first axial direction AXL_1, and the stopper 32 pivots, and the battery shaft 10 is restricted by the stopper surface 322B to be located in the locked position, and the stopper 322 is engaged in the lock hole 12. That is, when the stopper 322 is engaged in the lock hole 12, it means that the battery shaft 10 is in the locked position. If the lock pin 22 pushes the release block 324 and pivots the stopper 32, the battery shaft 10 is allowed to be released from the locked position in the second axial direction AXL_2.

[0068] See also Figure 2A and Figure 2BIn the stopper 32, the contact surface 322A of the stopper block 322 has a first inclined surface S1 and a first plane F1, and the bottom end of the first inclined surface S1 is connected to one end of the first plane F1. When the battery shaft 10 pushes the contact surface 322A in the first axial direction AXL_1, the battery shaft 10 first pushes the first inclined surface S1, and the battery shaft 10 moves along the first inclined surface S1 and the first plane F1 until the battery shaft 10 passes through the first plane F1 and the stopper 32 pivots, so that the battery shaft 10 is located in the locked position.

[0069] The stopper 32 includes a connecting rod 326, a snap-fitting groove 328, and a first rotating shaft 329. One end of the connecting rod 326 is connected to the stopper block 322, and the other end of the connecting rod 326 is connected to the release block 324. The snap-fitting groove 328 is provided on the connecting rod 326, and the snap-fitting groove 328 is located near one end of the stopper block 322. The stopper block 322 also has a protrusion 322C at a position corresponding to the snap-fitting groove 328, and the protrusion 322C is snap-fitted in the snap-fitting groove 328. When the battery shaft 10 pushes the contact surface 322A in the first axial direction AXL_1, the stopper block 322 moves upward and the protrusion 322C slides in the snap-fitting groove 328. The first rotating shaft 329 is disposed between the stopper block 322 and the release block 324 . The stopper 32 rotates in the first rotating direction C1 (counterclockwise) or in the second rotating direction C2 (clockwise) around the first rotating shaft 329 .

[0070] See also Figure 3 , state S11 indicates that the battery shaft 10 pushes the contact surface 322A of the stop block 322 in the first axial direction AXL_1. State S12 indicates that the stop block 322 links the stop member 32 to pivot, and state S13 indicates that the stop surface 322B of the stop block 322 limits the battery shaft 10 to be in the locked position. State S14 indicates that the lock pin 22 pushes the release block 324 and links the stop member 32 to pivot, allowing the battery shaft 10 to move in the second axial direction AXL_2. State S15 indicates that the battery shaft 10 moves in the second axial direction AXL_2 and gradually disengages from the stop block 322. State S16 indicates that when the battery shaft 10 is completely out of the locked position, the stop member 32 will rotate counterclockwise and reset.

[0071] See also Figure 4A and Figure 4B The locking device 1B can be used to lock the battery module 90 in the tube 82 of the frame 80 , wherein the tube 82 of the frame 80 is provided with a locking assembly 30 ′.

[0072] Please continue to read Figure 5A and Figure 5B The locking device 1B of this embodiment is different from the locking device 1B of the first embodiment. Figure 1CThe difference is that the locking assembly 30 ′ includes a sliding buffer 34 , the battery shaft 10 ′ is provided with a second locking hole 14 , and the second locking hole 14 is located at one side of the battery shaft 10 ′, and the position of the second locking hole 14 corresponds to the position of the sliding buffer 34 .

[0073] After the battery shaft 10' pushes the stopper 322 to move upward, the battery shaft 10' abuts against one end of the sliding buffer 34, and one end of the sliding buffer 34 is engaged in the second lock hole 14, so that the sliding buffer 34 starts to move until the battery shaft 10' enters the locked position. When the lock pin 22 pushes the release block 324, the release block 324 links the stopper 32 to pivot, and the sliding buffer 34 resets and pushes the battery shaft 10' to separate from the tube 82.

[0074] The sliding buffer 34 further includes a first abutting block 342, a second abutting block 344, a third abutting block 346 and a linear elastic member 34A. The first abutting block 342 is located above the second abutting block 344, and one end of the linear elastic member 34A is disposed in the second abutting block 344. The third abutting block 346 is located below the stop surface 322B, and the third abutting block 346 abuts against one end of the second abutting block 344 in the initial state. When the battery shaft 10' abuts against the first abutting block 342, the second abutting block 344 begins to move and moves away from the third abutting block 346. In the initial state, the first abutting block 342 protrudes from the third abutting block 346 in the second axial direction AXL_2 and does not exceed the stop surface 322B of the stop block 322.

[0075] Please continue to read Figure 6 State S21 indicates that the battery shaft 10' contacts the contact surface 322A of the stop block 322 and is about to start pushing the stop block 322. State S22 indicates that the battery shaft 10' pushes toward the first axial direction AXL_1, causing the stop member 32 to pivot and the stop block 322 to move upward in the longitudinal direction. State S23 indicates that the battery shaft 10' abuts against the first abutment block 342 of the sliding buffer member 34, and the second abutment block 344 starts to move away from the third abutment block 346.

[0076] See also Figure 7In this embodiment, the locking device 1C includes a battery shaft 10", a lock 20 and a locking assembly 40. A locking pin 22 is provided at one end of the lock 20. The locking assembly 40 includes a first stopper 42 and a second stopper 45. One end of the first stopper 42 has a first stopper block 422, the first stopper block 422 is engaged in the first lock hole 12, the other end of the first stopper block 422 has a first release block 424, and one side of the first stopper block 422 has a first contact The second stopper 45 is located below the first stopper 42. One end of the second stopper 45 has a second stopper block 452. The second stopper block 452 is engaged in the third lock hole 16. One side of the second stopper block 452 has a second contact surface 452A, and the other side has a second stopper surface 452B. The locking assembly 40 further includes a pressing member 47, which is located between the two ends of the second stopper 45.

[0077] The first stop member 42 also includes a first rotating shaft 429, which is arranged between the first stop block 422 and the first release block 424. The second stop member 45 also includes a second rotating shaft 458, which is arranged at an end away from the second stop block 452. The first stop member 42 rotates clockwise or counterclockwise around the first rotating shaft 429 and the second stop member 45 rotates around the second rotating shaft 458.

[0078] State S31 indicates that the battery shaft 10" pushes the second contact surface 452A of the second stop 45 in the first axial direction AXL_1. State S32 indicates that the battery shaft 10" will cause the second stop 45 to pivot when it is in the first axial direction AXL_1. State S33 indicates that the battery shaft 10" passes over the second stop 45 and enters the second locking position Lock_2, and is restricted by the second stop surface 452B to be located at the second locking position Lock_2. The battery shaft 10" continues to advance along the first axial direction AXL_1 and pushes the first contact surface 422A, and causes the first stop 42 to pivot. State S34 indicates that the battery shaft 10" passes over the first stop 42, and the battery shaft 10" is restricted by the first stop surface 422B, so that the battery shaft 10" is located at the first locking position Lock_1. State S35 is when the locking pin 22 pushes the first release block 424, and causes the first stop 42 to pivot. The state S36 is that after the first stopper 42 is pivoted, the battery shaft 10 ″ is allowed to disengage from the first locking position Lock_1 in the second axial direction AXL_2 and is allowed to move toward the second locking position Lock_2 .

[0079] State S37, when the battery shaft is located at the second locking position, the pressing member 47 is pressed by an external force to cause the second stop member 45 to pivot, and the battery shaft 10" is disengaged from the second locking position Lock_2. State S38, after the battery shaft 10" is disengaged from the second locking position Lock_2, the second stop member 45 is immediately reset to its initial position.

[0080] See also Figure 8 The battery axis 10" is provided with a first locking hole 12 and a third locking hole 16, wherein the first locking hole 12 is located above the battery axis 10", and the third locking hole 16 is located below the battery axis 10". The locking device 1D of this embodiment is different from the locking device 1D of the third embodiment. Figure 7 The difference is that the second stopper 45 of this embodiment forms a protruding column 455 in the transverse direction, and the locking assembly 40' further includes a pressing member 47', which is located between the two ends of the second stopper 45, and the pressing member 47' includes a push rod 472 and a joint portion 474, wherein the push rod 472 is connected to the joint portion 474, and the joint portion 474 is engaged with the protruding column 455. When the push rod 472 is displaced longitudinally downward by an external force, the joint portion 474 drives the protruding column 455 to displace longitudinally downward, so that the battery shaft 10" is disengaged from the second locking position.

[0081] See also Fig.9A and Fig. 9B The locking device 1D of this embodiment is used to lock the battery module 90 in the tube 82 of the frame 80. Fig.9A To place the locking device 1D and the battery module 90 on the upper side of the tube 82 (lower tube), as shown in FIG. Fig. 9B The locking device 1D and the battery module 90 are disposed on the lower side of the tube body 82 (lower tube).

[0082] In the present invention, each of the locking devices disclosed above (locking device 1A, locking device 1B, locking device 1C, locking device 1D) can be as follows Figure 4A , Fig.9A , Fig. 9B As shown, the battery module is disposed in the tube 82 of the frame 80 . The position in the figure is only an example and is not intended to limit the position where each locking device is disposed.

[0083] The above description is only used to illustrate the preferred implementation mode of the present invention, and is not intended to limit the scope of the present invention. All simple replacements and equivalent changes made according to the contents of the present invention specification are within the protection scope of the present invention.

Claims

1. A locking device for locking a battery module in a tube of a vehicle frame, characterized in that: The locking device comprises: A lock, wherein a lock pin is provided at one end of the lock; A battery axis, disposed on an end surface of the battery module; and The locking assembly is disposed in the tube body and includes: A stopper, wherein one end of the stopper has a stopper block, the other end of the stopper has a release block, one side of the stopper block has a contact surface, and the other side has a stopper surface; wherein, The battery shaft pushes the contact surface in a first axial direction to link the stopper to pivot, and the battery shaft is restricted by the stopper surface to be located at a locked position; and The locking pin pushes the release block and drives the stopper to pivot, allowing the battery shaft to escape from the locking position in a second axial direction.

2. The locking device according to claim 1, characterized in that: The contact surface has a first inclined surface and a first plane, the bottom end of the first inclined surface is connected to one end of the first plane, and in the process of the battery axis pushing the contact surface in the first axial direction, The battery shaft pushes the first inclined surface, and the battery shaft moves along the first inclined surface and the first plane until the battery shaft passes through the first plane and the stopper pivots, so that the battery shaft is located at the locking position.

3. The locking device according to claim 1, characterized in that: The stopper also includes a connecting rod, one end of which is connected to the stopping block, and the other end of which is connected to the releasing block.

4. The locking device according to claim 3, characterized in that: The stopper also includes a snap-fit ​​groove, which is arranged at one end of the connecting rod close to the stop block, and the one end of the stop block has a protrusion, which is snap-fitted in the snap-fit ​​groove, wherein: When the battery shaft pushes the contact surface in the first axial direction, the stop block moves upward and the protrusion slides in the engaging groove.

5. The locking device according to claim 3, characterized in that: The stopper also includes a first rotating shaft, which is disposed between the stop block and the release block. The stopper rotates in a first rotating direction or in a second rotating direction with the first rotating shaft as an axis.

6. The locking device according to claim 1, characterized in that: The battery shaft is provided with a first locking hole, and the stop block is engaged in the first locking hole.

7. The locking device according to claim 6, characterized in that: The locking assembly includes a sliding buffer, the battery shaft is provided with a second locking hole, and the second locking hole corresponds to one side of the sliding buffer; wherein, In the process of the battery shaft pushing the stop block to move upward, the battery shaft abuts against one end of the sliding buffer, and the one end of the sliding buffer is engaged in the second locking hole, so that the sliding buffer starts to move until the battery shaft enters the locking position; In the process that the locking pin pushes the release block and links the stopper to pivot, the sliding buffer is reset and pushes the battery shaft to escape from the tube body.

8. The locking device according to claim 7, characterized in that: The sliding buffer comprises a first abutting block, a second abutting block and a linear elastic member, wherein the first abutting block is located above the second abutting block, and the linear elastic member is arranged between the second abutting block and the tube body.

9. The locking device according to claim 8, characterized in that: The sliding buffer includes a third abutment block, which is located below the stop surface and abuts against one end of the second abutment block in an initial state. When the battery shaft abuts against the first abutment block, the second abutment block begins to move away from the third abutment block.

10. The locking device according to claim 9, characterized in that: In the initial state, the first abutting block protrudes beyond the third abutting block in the second axial direction and does not exceed the stop surface of the stop block.

11. A locking device for locking a battery module in a tube of a vehicle frame, characterized in that: The locking device comprises: A lock, wherein a lock pin is provided at one end of the lock; A battery axis, disposed on an end surface of the battery module; and Locking assembly, comprising: a first stopper, wherein one end of the first stopper has a first stop block, the other end of the first stop block has a first release block, one side of the first stop block has a first contact surface, and the other side of the first stop block has a first stop surface; and The second stopper is located below the first stopper, and one end of the second stopper has a second stopper block, one side of the second stopper block has a second contact surface, and the other side has a second stopper surface; wherein, The battery shaft pushes the second contact surface in the first axial direction, causing the second stopper to pivot, until the battery shaft passes over the second stopper and enters the second locking position, and the battery shaft is limited by the second stopper to be located at the second locking position, the battery shaft continues to move forward along the first axial direction and pushes the first contact surface, causing the first stopper to pivot, until the battery shaft passes over the first stopper and reaches the first locking position, and the battery shaft is limited by the first stopper to be located at the first locking position; and The locking pin pushes the first release block and links the first stopper to pivot, allowing the battery shaft to disengage from the first locking position in the second axial direction and move toward the second locking position.

12. The locking device according to claim 11, characterized in that: The locking assembly also includes: The pressing member is located between the two ends of the second stopper; wherein, When the battery shaft is located at the second locking position, the pressing member is pressed by an external force to pivot the second stopper, and the battery shaft is separated from the second locking position.

13. The locking device according to claim 11, characterized in that: The second stopper forms a protruding column in the transverse direction, and the locking assembly further includes: The pressing member is located between the two ends of the second stopper, and the pressing member includes a push rod and a joint portion, the push rod is connected to the joint portion, and the joint portion is engaged with the protruding column, wherein: When the push rod is displaced longitudinally downward by an external force, the engaging portion drives the protruding column to displace downward, so that the battery shaft is released from the second locking position.

14. The locking device according to claim 11, characterized in that: The first stopper also includes a connecting rod, one end of which is connected to the first stopping block, and the other end of which is connected to the first releasing block.

15. The locking device according to claim 14, characterized in that: The first stopper also includes a snap-fit ​​groove, which is arranged at one end of the connecting rod close to the first stopper block, and the one end of the first stopper block has a protrusion, and the protrusion is snap-fitted in the snap-fit ​​groove, wherein: When the battery shaft pushes the first contact surface in the first axial direction, the first stop block moves upward and the protrusion slides in the engaging groove.

16. The locking device according to claim 11, characterized in that: The first contact surface has a first inclined surface and a first plane, the bottom end of the first inclined surface is connected to one end of the first plane, the second contact surface has a second inclined surface and a second plane, the bottom end of the second inclined surface is connected to one end of the second plane, and in the process of the battery axis pushing the second contact surface in the first axial direction, The battery shaft pushes the second inclined plane, and the battery shaft moves along the second inclined plane and the second plane to cause the second stopper to pivot, and the battery shaft pushes the first inclined plane, and the battery shaft moves along the first inclined plane and the first plane until the battery shaft passes through the first plane and the first stopper pivots, so that the battery shaft is located in the first section locking position.

17. The locking device according to claim 11, characterized in that: The first stop member also includes a first rotating shaft, which is arranged between the first stop block and the first release block. The second stop member also includes a second rotating shaft, which is arranged at an end away from the second stop block. The first stop member rotates in the first rotation direction or in the second rotation direction with the first rotating shaft as the axis, and the second stop member rotates in the second rotation direction with the second rotating shaft as the axis.

18. The locking device according to claim 11, characterized in that: The battery shaft is provided with a first locking hole and a third locking hole, the first locking hole is located above the battery shaft, the third locking hole is located below the battery shaft, the first stop block is engaged in the first locking hole, and the second stop block is engaged in the third locking hole.

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