A battery pack locking mechanism

Abstract

This invention belongs to the field of automotive parts technology, specifically relating to a battery pack locking mechanism, comprising: a base having a vertical moving groove and a locking groove for accommodating a locking shaft; a locking tongue movably disposed within the moving groove, the lower end of which extends into the locking groove and closes it when the locking tongue moves downward; and a pull rod connected to the upper end of the locking tongue, the pull rod driving the locking tongue to move up and down along the moving groove. Compared with the prior art, the advantages of this invention are that the battery pack locking mechanism can achieve locking and unlocking of the locking shaft through the linear up and down movement of the pull rod, reducing the space occupied by the pull rod during movement, optimizing the vehicle chassis structure, and when the pull rod moves upward, it can first drive the clamping arm to rotate and then drive the locking tongue to move, so that the locking shaft is first released and then unlocked.

Description

Technical Field

[0001] This invention belongs to the field of automotive parts technology, specifically relating to a battery pack locking mechanism. Background Technology

[0002] Currently, electric vehicle batteries are generally installed in two ways: fixed and swappable. Fixed batteries are typically fixed to the vehicle and are charged directly from the vehicle. Swappable batteries, on the other hand, are usually mounted on a bracket in the vehicle using a movable installation method. The battery can be removed for individual replacement or charging. After the removed battery is fully charged, it is then reinstalled in the vehicle.

[0003] In existing technologies, battery replacement methods include manual and automatic methods. Regardless of the method, when the battery is installed on the vehicle's bracket, the bracket must lock the battery onto the bracket. For example, in the lock base and locking mechanism with announcement number CN213705146U, the lock base includes a base body and a lock tongue. The lock tongue is rotatably mounted on the base body and switches between locked and unlocked states, allowing the lock shaft to disengage from or enter the lock groove. When locked, the spring force allows the lock shaft to resist the lock tongue. When unlocked, the pull rod drives the lock tongue to rotate. However, this structure requires a large amount of space for the pull rod to move, which increases the difficulty of vehicle body design by requiring a large amount of space to be reserved in the compact vehicle body. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a battery pack locking mechanism in light of the current state of the prior art.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a battery pack locking mechanism is proposed, comprising: a base having a vertical moving groove and a locking groove for accommodating a locking shaft;

[0006] The locking tongue is movably disposed within the movable groove. When the locking tongue moves downward, its lower end can extend into the locking groove and close the locking groove.

[0007] A pull rod is connected to the upper end of the locking tongue, and the pull rod is used to drive the locking tongue to move up and down along the moving groove.

[0008] In the aforementioned battery pack locking mechanism, a limiting groove is provided on the locking tongue, and a limiting shaft is provided on the inner wall of the moving groove, with the limiting shaft movably inserted into the limiting groove.

[0009] In the aforementioned battery pack locking mechanism, a clamping arm is rotatably connected to the base, and a clamping block is provided at the end of the clamping arm. When the clamping arm rotates downward, the clamping block can extend into the locking groove and press against the locking shaft.

[0010] In the aforementioned battery pack locking mechanism, the clamping arm is provided with a rotating part and a connecting part at both ends. The rotating part is rotatably connected to the base, and the connecting part is connected to the base through a clamping spring.

[0011] In the aforementioned battery pack locking mechanism, the pressing block is provided with a pressing arc surface, and the locking tongue is provided with a fitting arc surface. The pressing arc surface is used to press against the locking shaft and make the locking shaft press against the fitting arc surface.

[0012] In the aforementioned battery pack locking mechanism, the connecting part is provided with an extension part, and the extension part is connected to the pull rod by a tension spring.

[0013] In the aforementioned battery pack locking mechanism, a first waist hole is provided on the extension portion, and a tension shaft is provided on the tension spring, the tension shaft being movably disposed within the first waist hole.

[0014] In the aforementioned battery pack locking mechanism, a second waist hole is provided at the upper end of the locking tongue, and an unlocking shaft is provided on the pull rod. The unlocking shaft is movably disposed in the second waist hole, and the distance from the unlocking shaft to the apex of the second waist hole is greater than the distance from the pull shaft to the apex of the first waist hole.

[0015] The aforementioned battery pack locking mechanism further includes: a mounting base for connecting to the vehicle body, which is movably provided with a pin;

[0016] A pin hole is provided on the pull rod, and the pin is movably inserted into the pin hole.

[0017] In the aforementioned battery pack locking mechanism, a mounting hole is provided in the mounting base, a return spring is provided in the mounting hole, and the pin is inserted into the return spring and connected to one end of the return spring.

[0018] Compared with the prior art, the advantages of the present invention are that the battery pack locking mechanism can lock and unlock the locking shaft by the linear up and down movement of the pull rod, reducing the space occupied by the pull rod during movement, optimizing the vehicle chassis structure, and when the pull rod moves upward, it can first drive the clamping arm to rotate and then drive the locking tongue to move, so that the locking shaft is first released and then unlocked. Attached Figure Description

[0019] Figure 1 This is a three-dimensional view of the battery pack locking mechanism;

[0020] Figure 2 This is a cross-sectional view of the battery pack locking mechanism;

[0021] Figure 3 This is a sectional view of the mounting base;

[0022] Figure 4This is a three-dimensional view of the base.

[0023] In the diagram, 1. Base; 2. Moving groove; 3. Locking groove; 4. Locking tongue; 5. Pull rod; 6. Limiting shaft; 7. Limiting groove; 8. Pressing arm; 9. Pressing block; 10. Rotating part; 11. Connecting part; 12. Pressing spring; 13. Abutting arc surface; 14. Fitting arc surface; 15. Extension part; 16. Tension spring; 17. First waist hole; 18. Tension shaft; 19. Second waist hole; 20. Unlocking shaft; 21. Mounting seat; 22. Pin; 23. Pin hole; 24. Mounting hole; 25. Return spring; 26. Abutting block; 27. Unlocking piece; 28. Unlocking slope. Detailed Implementation

[0024] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0025] like Figures 1 to 4 As shown, the battery pack locking mechanism includes: a base 1, which has a vertical moving groove 2 and a locking groove 3 for accommodating the locking shaft; a locking tongue 4, which is movably disposed in the moving groove 2, and when the locking tongue 4 moves downward, its lower end can extend into the locking groove 3 and close the locking groove 3; and a pull rod 5, which is connected to the upper end of the locking tongue 4, and the pull rod 5 is used to drive the locking tongue 4 to move up and down along the moving groove 2.

[0026] The movable groove 2 is used to accommodate the bolt 4, and the locking groove 3 is used to accommodate the locking shaft. When the bolt 4 moves downward in the movable groove 2 to a certain distance, it can close the locking shaft in the locking groove 3. The pull rod 5 is connected to the upper end of the bolt 4. When the pull rod 5 moves, it can drive the bolt 4 to move up and down. When the bolt 4 moves upward, it can move away from the locking groove 3, thereby unlocking the locking shaft. Because the movable groove 2 is set vertically, the bolt 4 can only move in the direction specified by the movable groove 2, and the pull rod 5 can only move up and down. This allows the pull rod 5 to only move up and down during the movement, reducing the space occupied by the pull rod 5 when it moves.

[0027] A limiting groove 7 is provided on the locking tongue 4, and a limiting shaft 6 is provided on the inner wall of the moving groove 2. The limiting shaft 6 is movably inserted into the limiting groove 7.

[0028] The limiting shaft 6 can restrict the movement direction and distance of the locking tongue 4 and ensure that the locking tongue 4 will not disengage.

[0029] A clamping arm 8 is rotatably connected to the base 1. A clamping block 9 is provided at the end of the clamping arm 8. When the clamping arm 8 rotates downward, the clamping block 9 can extend into the locking groove 3 and press against the locking shaft.

[0030] The clamping arm 8 can rotate around its connection with the base 1, and the clamping block 9 can press against the locking shaft, so that the locking shaft is fixed in the locking groove 3 and the locking shaft is prevented from shaking.

[0031] The clamping arm 8 is provided with a rotating part 10 and a connecting part 11 at both ends. The rotating part 10 is rotatably connected to the base 1, and the connecting part 11 is connected to the base 1 through a clamping spring 12.

[0032] The rotating part 10 and the connecting part 11 are respectively disposed at both ends of the clamping arm 8, that is, the clamping block 9 is located between the rotating part 10 and the connecting part 11. When the connecting part 11 is driven to move downward by the clamping spring 12, it can simultaneously drive the clamping block 9 to move downward, and can make the clamping block 9 generate a downward force. When this force acts on the lock shaft, it can make the lock shaft press against the inner wall of the lock tongue 4 and the locking groove 3. This is equivalent to restricting the lock shaft at three points to ensure that the lock shaft will not shake.

[0033] The clamping block 9 is provided with a pressing arc surface 13, and the locking tongue 4 is provided with a fitting arc surface 14. The pressing arc surface 13 is used to press against the locking shaft and make the locking shaft press against the fitting arc surface 14.

[0034] The pressing arc surface 13 and the contact arc surface 14 can increase the contact area with the lock shaft, increase the friction between them, make the lock shaft more secure, and make the lock tongue 4 more difficult to move during vehicle operation, reducing the probability of accidental locking.

[0035] An extension portion 15 is provided on the connecting part 11, and the extension portion 15 is connected to the pull rod 5 by a tension spring 16.

[0036] A tension spring 16 is connected between the extension part 15 and the pull rod 5. When the pull rod 5 moves upward, the tension spring 16 overcomes the elastic force of the compression spring 12, thereby driving the compression arm 8 to rotate upward.

[0037] The extension portion 15 has a first waist hole 17, and the tension spring 16 has a tension shaft 18, which is movably disposed in the first waist hole 17.

[0038] The first waist hole 17 provided on the extension part 15 is used to accommodate the tension shaft 18. When the battery pack locking mechanism is in the locked state, the pull rod 5 is located in a relatively lower position. At this time, the tension shaft 18 is located in the first waist hole 17 and does not abut against the top and bottom of the first waist hole 17. As a result, the tension spring 16 is in a free extension state. This can avoid the elastic force of the tension spring 16 and the elastic force of the compression spring 12 from canceling each other out. When unlocking is required, the pull rod 5 moves upward, first causing the tension shaft 18 to move and abut against the top of the first waist hole 17. Then the pull rod 5 continues to move upward to generate an upward pulling force on the compression arm 8.

[0039] The upper end of the locking tongue 4 is provided with a second waist hole 19, and the pull rod 5 is provided with an unlocking shaft 20. The unlocking shaft 20 is movably set in the second waist hole 19, and the distance from the unlocking shaft 20 to the apex of the second waist hole 19 is greater than the distance from the extension shaft 18 to the apex of the first waist hole 17.

[0040] When the lever 5 moves upward, the unlocking shaft 20 can gradually approach the second waist hole 19 until it abuts against the top of the second waist hole 19. Then, as the lever 5 continues to move, it can drive the locking tongue 4 to move upward. Because the distance from the unlocking shaft 20 to the top of the second waist hole 19 is greater than the distance from the extension shaft 18 to the top of the first waist hole 17, when the lever 5 moves upward, it will first touch the top of the first waist hole 17, and then drive the pressing arm 8 to rotate first and then drive the locking tongue 4 to move. The advantage of doing this is that the pressing block 9 can disengage from the locking shaft first and then the locking tongue 4 can open, ensuring a smooth unlocking action.

[0041] It also includes: a mounting base 21 for connecting to the vehicle body, which is movably provided with a pin 22; and a pin hole 23 opened on the tie rod 5, in which the pin 22 is movably inserted.

[0042] The pin 22 is inserted into the pin hole 23 to ensure that the lever 5 will not move during vehicle operation, thereby improving the stability of the lock.

[0043] The mounting base 21 has a mounting hole 24, and a return spring 25 is installed in the mounting hole 24. The pin 22 is inserted into the return spring 25 and connected to one end of the return spring 25.

[0044] The return spring 25 prevents the pin 22 from easily dislodging from the pin hole 23.

[0045] The end of the pin 22 extends out of the mounting base 21 and is provided with a stop block 26. An unlocking piece 27 is slidably attached to the mounting base 21. An unlocking slope 28 is provided on the unlocking piece 27. When the unlocking piece 27 moves upward, the unlocking slope 28 can drive the stop block 26 to move, thereby causing the pin 22 to disengage from the pin hole 23 and unlocking the pull rod 5.

[0046] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0047] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. A battery pack lock mechanism, characterized by, The utility model relates to a lock device for vehicle, which comprises: a base with a vertical moving slot and a locking slot for accommodating a locking shaft; a lock tongue movably arranged in the moving slot, the lower end of which can extend into the locking slot and close the locking slot when the lock tongue moves downward; a pull rod connected with the upper end of the lock tongue, the pull rod being used to drive the lock tongue to move up and down along the moving slot; a limiting slot is formed on the upper end of the lock tongue, a limiting shaft is arranged on the inner wall of the moving slot, and the limiting shaft is movably arranged in the limiting slot; a pressing arm is rotatably connected to the base, a pressing block is arranged at the end of the pressing arm, and the pressing block can extend into the locking slot and abut against the locking shaft when the pressing arm rotates downward; a rotating part and a connecting part are arranged at the two ends of the pressing arm respectively, the rotating part is rotatably connected to the base, and the connecting part is connected to the base through a pressing spring; an abutting arc surface is arranged on the pressing block, a fitting arc surface is arranged on the lock tongue, and the abutting arc surface is used to abut against the locking shaft and make the locking shaft abut against the fitting arc surface; further comprising:

2. The battery pack lock mechanism of claim 1, wherein, a mounting seat movably arranged with a bolt for connecting with a vehicle body; a pin hole is formed on the pull rod, and the bolt is movably arranged in the pin hole.

3. The battery pack lock mechanism of claim 2, wherein, An extension part is arranged on the connecting part, and the extension part is connected to the pull rod through a stretching spring.

4. The battery pack lock mechanism of claim 3, wherein, A first waist hole is formed on the extension part, a stretching shaft is arranged on the stretching spring, and the stretching shaft is movably arranged in the first waist hole.

5. The battery pack lock mechanism of claim 1, wherein, A second waist hole is formed on the upper end of the lock tongue, an unlocking shaft is arranged on the pull rod, the unlocking shaft is movably arranged in the second waist hole, and the distance from the unlocking shaft to the top point of the second waist hole is greater than the distance from the stretching shaft to the top point of the first waist hole. An installation hole is formed in the mounting seat, a reset spring is arranged in the installation hole, and the bolt is arranged in the reset spring and connected to one end of the reset spring.

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