Intermittent multi-locking mechanism for battery replacement

Abstract

The invention relates to a battery replacement structure, and discloses an intermittent multi-locking mechanism for battery replacement, which comprises a mounting plate (1) mounted on a fixed end, a lock shell (2) for hanging a battery body, a lock rod assembly mounted in the lock shell (2), a positioning pin (51) fixedly mounted on the lock rod assembly, and a plurality of locking holes (11) formed in the lock hole (11), a lock groove (21) matched with the positioning pin (51) is formed in the lock shell (2), the driving shaft (6) is matched with the lock rod assembly and drives the lock rod assembly to move along the lock groove (21), and a lock block (3) rotationally matched with the lock hole (11) is fixedly installed at the outer end of the lock rod assembly; the number of the lock rod assemblies is at least two. According to the double-lock mechanism, the intermittent gear is used for driving the threads to mesh, the double-lock mechanism has better stability and reliability in the working process, and huge locking force can be achieved; and in addition, a self-locking anti-loosening structure is further arranged, the structure is compact, work is reliable, and the large application market is achieved.

Description

Technical Field

[0001] The present invention relates to the field of battery replacement, and in particular to an intermittent multiple locking mechanism for battery replacement. Background Art

[0002] In recent years, my country's new energy heavy-duty truck market has shown strong growth momentum. In the field of new energy, pure electric technology is the most widely used and relatively mature, and battery-swap new energy heavy-duty trucks are gradually gaining favor in the market with their fast energy replenishment speed and longer cruising range. During the battery swap process of heavy trucks, a locking mechanism needs to be set on the battery to achieve the fixation and separation of the battery and the vehicle body. During long-term use, the quick-change lock carries a heavy battery and needs to be frequently unlocked, which can easily cause fatigue failure over time. For new energy vehicles, how to improve the life and reliability of the locking mechanism is a technical problem that needs to be solved urgently.

[0003] At present, vertical locking mechanisms are widely used in the market. With a bolt structure, if you want to improve reliability, you must increase the tightening force. The tighter you tighten, the more it affects the convenience of disassembly next time, so you need to unlock with a large torque. If you want to improve the convenience of disassembly, you need to reduce the tightening force, but it will affect the reliability of the locking mechanism. Increasing the tightening force of the lock requires increasing the input torque. After excessive use, the locking mechanism is prone to fatigue and failure. Therefore, developing a locking mechanism that is compact, reliable, long-life and highly reliable has become an inevitable trend in the industry. Summary of the invention

[0004] The present invention aims at the shortcomings of the prior art and provides an intermittent multiple locking mechanism for battery replacement.

[0005] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0006] An intermittent multiple locking mechanism for battery replacement comprises a mounting plate installed on a fixed end, a locking hole is provided on the mounting plate, and a lock shell for hanging a battery body, a rotatable and telescopic locking rod assembly is installed in the lock shell, a positioning pin is fixedly installed on the locking rod assembly, and a locking groove cooperating with the positioning pin is provided on the lock shell, and also comprises a driving shaft, which cooperates with the locking rod assembly and drives it to move along the locking groove, and a locking block cooperating with the locking hole is fixedly installed on the outer end of the locking rod assembly. When installing, the locking block is passed through the locking hole and extended out of the mounting plate, and the driving shaft drives the locking rod assembly to rotate, thereby rotating the locking block, and the rotated locking block cannot slide out of the locking hole to complete the locking; there are at least two groups of locking rod assemblies, and the driving shaft cooperates with multiple locking rod assemblies at the same time. The user rotates the driving shaft by means of a motor or manual rotation, and drives the locking rod assembly to rotate by means of gear meshing, thereby realizing the function of multiple locking.

[0007] Preferably, each locking rod assembly includes a threaded sleeve and a screw, a locking block is fixedly mounted on the outer end of the screw, the threaded sleeve cooperates with the external thread on the inner end of the screw and drives the screw to rotate, so that the rotating locking block cooperates with the lock hole to lock; the positioning pin is fixedly mounted on the middle part of the screw. When the threaded sleeve and the screw are working, they will produce friction with the inner hole of the lock shell and the end cover, affecting the life of the locking mechanism. In terms of design, a gap can be left between the threaded sleeve and the end cover, and elastic wear-resistant washers, wear-resistant washers and wear-resistant washers can be selectively added in the middle. The wear-resistant washers can be surface nitrided to improve the surface hardness of the wear-resistant washers, which can effectively increase the service life of the mechanical nut, thereby increasing the service life of the entire lock.

[0008] Preferably, the threaded sleeve is fixedly provided with a driven gear coaxially arranged therewith, and the driving shaft is fixedly provided with a driving gear meshing with the driven gear.

[0009] Preferably, the driving gear is an incomplete gear structure, and the effective working angle formed by the working teeth on the driving gear is 60° to 90°.

[0010] Preferably, the locking groove includes a spiral groove and a straight groove which are arranged in sequence from the outside to the inside and are interconnected. The spiral groove is equipped with spiral rubber. The material selection should have a certain deformation ability. Adhesive fastening can be selectively used during assembly, so that the mud and dust attached to the surface can be isolated from the outside, reducing the contact between the internal parts and the air, and reducing the risk of internal parts being corroded. The spiral groove is coaxial with the locking rod assembly and spirally arranged, and the straight groove is parallel to the axial arrangement of the locking rod assembly. Through the setting of the spiral groove, the locking block can be driven to rotate and achieve matching locking with the lock hole; through the setting of the straight groove, the locking block can be in the locked state, the drive shaft continues to rotate, and while maintaining the locked state, the distance between the battery body and the vehicle body can be adjusted along the straight groove direction to reduce the distance between the battery body and the vehicle body.

[0011] Preferably, the spiral groove is an arc segment of one degree on the vertical projection plane.

[0012] Preferably, the locking hole is a rectangular structure, the projection of the locking block on the mounting plate is a rectangle, the lower surface of the locking block is connected to the screw by a thin rod, the length and width of the locking hole are both greater than the length and width of the locking block, and the length of the locking block is greater than the width of the locking hole.

[0013] Preferably, there are two sets of locking rod assemblies which are arranged on both sides of the drive shaft; a driving groove and two locking rod grooves are provided in the lock housing, the drive shaft is installed in the driving groove, and the locking rod assembly is installed in the locking rod groove.

[0014] Preferably, the open end of the driving groove is threadedly installed with an anti-falling part, and also includes a spring and a gear ring installed in the driving groove. The driving shaft is a hexagonal shaft, the gear ring is provided with a hexagonal hole and is sleeved on the driving shaft, one end of the spring is pressed against a retaining ring on the inner wall of the driving groove, and the other end of the spring contacts the gear ring and drives it to be pressed against the anti-falling part, and the gear ring and the anti-falling part are contacted on one side with each other and provided with gear grooves that engage with each other.

[0015] Preferably, an end cover is further included, which is mounted on the lock housing by screws, and the end cover cooperates with the notches of the drive slot and the lock rod slot.

[0016] The present invention has significant technical effects due to the adoption of the above technical solutions: the present application utilizes intermittent gears to drive the threaded meshing, making them highly synchronous, so that the double locking mechanism has better stability and reliability during operation, thus having a longer service life, and can achieve a huge locking force, which can be greater than 200Nm; in addition, it also has a self-locking and anti-loosening structure. The present application has a compact structure and reliable operation, and the intermediate protection shape design can be applied to various extreme environments, and has a large application market. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a cross-sectional view of the present invention.

[0019] Figure 3 yes Figure 2 A partial enlarged view of .

[0020] Figure 4 It is the assembly drawing of the threaded sleeve and the drive shaft.

[0021] Figure 5 It is a cross-sectional view of the lock housing.

[0022] Figure 6 It is a schematic diagram of the structure of the end cover.

[0023] The names of the parts indicated by the numerical labels in the accompanying drawings are as follows: 1-mounting plate, 2-lock housing, 3-lock block, 4-threaded sleeve, 5-screw, 6-drive shaft, 7-anti-fall part, 8-spring, 9-tooth ring, 10-end cover, 11-lock hole, 201-drive groove, 202-lock rod groove, 21-lock groove, 211-spiral groove, 212-straight groove, 41-driven gear, 51-locating pin, 61-driving gear. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Example 1

[0026] An intermittent multiple locking mechanism for battery replacement comprises a mounting plate 1 mounted on a fixed end, a locking hole 11 being provided on the mounting plate 1, and a lock shell 2 for hanging a battery body, a rotatable and retractable locking rod assembly being mounted in the lock shell 2, a positioning pin 51 being fixedly mounted on the locking rod assembly, a locking groove 21 cooperating with the positioning pin 51 being provided on the lock shell 2, and a driving shaft 6 being provided, the driving shaft 6 being cooperated with the locking rod assembly and driving it to move along the locking groove 21, a locking block 3 being rotationally cooperated with the locking hole 11 being fixedly mounted on the outer end of the locking rod assembly, during installation, the locking block 3 is passed through the locking hole 11 and extended out of the mounting plate 1, the driving shaft 6 drives the locking rod assembly to rotate, thereby rotating the locking block 3, and the rotated locking block 3 cannot slide out of the locking hole 11 and thus completes locking; there are at least two groups of locking rod assemblies, the driving shaft 6 is cooperated with multiple locking rod assemblies at the same time, the user rotates the driving shaft 6 by means of a motor or manual rotation, and drives the locking rod assembly to rotate by means of gear meshing, thereby realizing the function of multiple locking.

[0027] Each set of locking rod assembly includes a threaded sleeve 4 and a screw 5. The locking block 3 is fixedly mounted on the outer end of the screw 5. The threaded sleeve 4 cooperates with the external thread on the inner end of the screw 3 and drives the screw 5 to rotate, so that the rotating locking block 3 cooperates with the lock hole 11 to lock; the positioning pin 51 is fixedly mounted on the middle part of the screw 5. When the threaded sleeve 4 and the screw 5 are working, it will produce friction with the lock housing 2 and the inner hole of the end cover 10, affecting the life of the locking mechanism. In terms of design, while a gap can be left between the threaded sleeve 4 and the end cover 10, elastic wear-resistant washers, wear-resistant washers and wear-resistant washers can be selectively added in the middle. The wear-resistant washers can be surface nitrided to improve the surface hardness of the wear-resistant washers, which can effectively increase the service life of the mechanical nut, thereby increasing the service life of the entire lock.

[0028] Example 2

[0029] The embodiment is the same as the first embodiment, except that the threaded sleeve 4 is fixedly provided with a driven gear 41 coaxially arranged therewith, and the driving shaft 6 is fixedly provided with a driving gear 61 meshing with the driven gear 41 .

[0030] The driving gear 61 is an incomplete gear structure, and the effective working angle formed by the working teeth on the driving gear 61 is 76.2°. The present application adopts a gear-type intermittent transmission mechanism to achieve locking and unlocking. The driving shaft 6 is provided with a driving gear 61. After the driving shaft 6 is driven counterclockwise, the intermittent transmission of power is achieved through the meshing and separation of the gears. The threaded sleeves 4 on both sides intermittently rotate clockwise. Through the action of the thread pair, the screw 5 completes the locking work downward. The gear intermittent structure can drive two locking parts. The driving gear 61 has only a few teeth, and the tooth circumference of the driven gear 41 is fully distributed on the threaded sleeve 4. Only when the driving gear 61 is meshed with the gear teeth of the driven gear 41, the corresponding threaded sleeve 4 can be rotated through a certain angle. When it is not meshed with the driven gear 41, the driven gear 41 is locked. By controlling the number of gears of the driving gear 61 to perform intermittent work, the rotation speed of the threaded sleeve 4 is successively unified, and finally the two threaded sleeves 4 are interlocked to achieve double locking force, so that the locking mechanism produces a huge locking force. The advantage of this gear intermittent structure over the thread locking structure on the market is that the tightening torque can be properly input to transfer the friction force originally acting on the thread pair to the gear transmission, so that the double locking mechanism has better stability and reliability during operation, and the locking mechanism has a longer service life.

[0031] Example 3

[0032] The same as the first embodiment, except that the lock groove 21 includes a spiral groove 211 and a straight groove 212 which are arranged in sequence from the outside to the inside and are interconnected. The spiral groove 211 is equipped with a spiral rubber. The material selection should have a certain deformation ability. When assembling, adhesive fastening can be selectively used, so that the mud and dust attached to the surface can be isolated from the outside, reducing the contact between the internal parts and the air, and reducing the risk of internal parts being corroded. The spiral groove 211 is coaxial with the lock rod assembly and spirally arranged, and the straight groove 212 is arranged parallel to the axial direction of the lock rod assembly. Through the setting of the spiral groove 211, the lock block 3 can be driven to rotate and realize the matching lock with the lock hole 11; through the setting of the straight groove 211, the lock block 3 can be in the locked state, the drive shaft 6 continues to rotate, and while maintaining the locked state, the distance between the battery body and the vehicle body can be adjusted along the direction of the straight groove 211 to reduce the distance between the battery body and the vehicle body.

[0033] The spiral groove 211 is a 90° arc segment on the vertical projection plane.

[0034] The locking hole 11 is a rectangular structure, the projection of the locking block 3 on the mounting plate 1 is a rectangle, the lower surface of the locking block 3 is connected to the screw 5 through a thin rod, the length and width of the locking hole 11 are both greater than the length and width of the locking block 3, and the length of the locking block 3 is greater than the width of the locking hole 11.

[0035] When the double-locking mechanism starts to lock, the drive shaft 6 rotates counterclockwise, and the drive shaft 6 drives the threaded sleeves 4 on the left and right sides to rotate clockwise through gear transmission. The screw 5 rotates through the action of the thread pair, and under the joint action of the spiral groove 211 and the positioning pin 51, it finally rotates 90° to provide axial locking force to the mounting plate 1. The double-locking structure ensures the maximization of the force-bearing area, thereby providing a huge axial locking force to the battery body; then the drive shaft 6 continues to rotate counterclockwise, and at this time the screw 5 is driven to rotate and under the action of the straight groove 221 and the positioning pin 51, it moves axially and locks the battery body to the vehicle body.

[0036] When the double lock mechanism starts to unlock, the drive shaft 6 rotates clockwise, and the drive shaft 6 drives the threaded sleeve 4 to rotate counterclockwise through the gear transmission. Under the joint action of the thread pair, the straight groove 221 and the positioning pin 51, the screw 5 moves up and down along its axis; then the drive shaft 6 continues to rotate clockwise, and under the joint action of the spiral groove 211 and the positioning pin 51, the screw 5 rotates 90°, and the locking block 3 on the screw 5 is parallel to the lock hole 11 on the mounting plate 1, thereby removing the battery body.

[0037] Example 4

[0038] The same as Example 1, the difference is that there are two groups of locking rod assemblies and they are arranged on both sides of the drive shaft 6; a driving groove 201 and two locking rod grooves 202 are provided in the lock housing 2, the drive shaft 6 is installed in the driving groove 201, and the locking rod assembly is installed in the locking rod groove 202.

[0039] Example 5

[0040] The embodiment is the same as Example 1, except that the open end of the driving groove 201 is threadedly installed with an anti-falling part 7, and also includes a spring 8 and a gear ring 9 installed in the driving groove 201. The driving shaft 6 is a hexagonal shaft, and the gear ring 9 is provided with a hexagonal hole and is sleeved on the driving shaft 6. One end of the spring 8 is pressed against the retaining ring on the inner wall of the driving groove 201, and the other end of the spring 8 contacts the gear ring 9 and drives it to be pressed against the anti-falling part 7. The gear ring 9 is provided with mutually engaging teeth on the side where the anti-falling part 7 contacts each other, and the gear ring 9 is provided with teeth grooves that engage with each other. The compression force of the spring 8 pushes the toothed ring 9 against the anti-falling part 7. The teeth of the toothed ring 9 and the anti-falling part 7 are engaged with each other and cannot rotate at this time. A block is processed on the other side of the anti-falling part 7, and the block is designed to be divided into five equal parts. During assembly, the block will be used to apply tightening torque to the anti-falling part 7 clockwise to fix the anti-falling part 7 at the open end of the driving groove 201. At this time, an external driving part is required to cover the driving shaft 6 and push the toothed ring 9 open to release the anti-falling engagement between the toothed ring 9 and the anti-falling part 7, so as to carry out the subsequent battery body locking work.

[0041] The lock body 2 further comprises an end cover 10 , which is mounted on the lock housing 2 by means of screws. The end cover 10 matches with the notches of the drive slot 201 and the lock rod slot 202 .

[0042] Both sides of the end cover 10 are processed with mounting holes, and the mounting holes can be installed with mechanical lock tongues and hexagonal bolts. Due to the design of the block being divided into five equal parts, after the anti-falling part 7 is tightened with torque, one side of the end cover 10 must be able to avoid the block to install the mechanical protection device mechanical lock tongue and hexagonal bolt, achieving a double protection effect. The design of the anti-loosening device can effectively prevent the threaded sleeve 4 from rotating, ensure the effectiveness of the double locking mechanism, and reduce the occurrence of failures.

[0043] In conclusion, the above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the patent of the present invention.

Claims

1. An intermittent multiple locking mechanism for battery replacement, characterized in that: The invention comprises a mounting plate (1) mounted on a fixed end, a locking hole (11) being provided on the mounting plate (1), a lock shell (2) for hanging a battery body, a locking rod assembly being mounted in the lock shell (2), a positioning pin (51) being fixedly mounted on the locking rod assembly, a locking groove (21) cooperating with the positioning pin (51) being provided on the lock shell (2), and a driving shaft (6) cooperating with the locking rod assembly and driving it to move along the locking groove (21), a locking block (3) being fixedly mounted on the outer end of the locking rod assembly and cooperating with the locking hole (11) in rotation; the locking rod assembly comprises at least two groups, and the driving shaft (6) is simultaneously cooperating with a plurality of locking rod assemblies.

2. An intermittent multiple locking mechanism for battery replacement according to claim 1, characterized in that: Each locking rod assembly comprises a threaded sleeve (4) and a screw (5); a locking block (3) is fixedly mounted on the outer end of the screw (5); the threaded sleeve (4) cooperates with the external thread on the inner end of the screw (3) and drives the screw (5) to rotate; a positioning pin (51) is fixedly mounted on the screw (5).

3. An intermittent multiple locking mechanism for battery replacement according to claim 2, characterized in that: A driven gear (41) is fixedly mounted on the threaded sleeve (4), and a driving gear (61) meshing with the driven gear (41) is fixedly mounted on the driving shaft (6).

4. An intermittent multiple locking mechanism for battery replacement according to claim 3, characterized in that: The driving gear (61) is an incomplete gear structure, and the effective working angle formed by the working teeth on the driving gear (61) is 60° to 90°.

5. An intermittent multiple locking mechanism for battery replacement according to claim 1, characterized in that: The locking groove (21) comprises a spiral groove (211) and a straight groove (212) which are connected to each other. A spiral rubber is installed on the spiral groove (211). The spiral groove (211) is coaxial with the locking rod assembly and is spirally arranged. The straight groove (212) is arranged parallel to the axial direction of the locking rod assembly.

6. An intermittent multiple locking mechanism for battery replacement according to claim 5, characterized in that: The spiral groove (211) is a 90° arc segment on a vertical projection plane.

7. An intermittent multiple locking mechanism for battery replacement according to claim 1, characterized in that: The locking hole (11) is a rectangular structure, the projection of the locking block (3) on the mounting plate (1) is a rectangle, the length and width of the locking hole (11) are both greater than the length and width of the locking block (3), and the length of the locking block (3) is greater than the width of the locking hole (11).

8. An intermittent multiple locking mechanism for battery replacement according to claim 1, characterized in that: There are two sets of locking rod assemblies which are arranged on both sides of the drive shaft (6); a drive groove (201) and a locking rod groove (202) are arranged in the lock housing (2); the drive shaft (6) is installed in the drive groove (201), and the locking rod assembly is installed in the locking rod groove (202).

9. An intermittent multiple locking mechanism for battery replacement according to claim 8, characterized in that: The opening end of the driving groove (201) is threadedly mounted with an anti-falling component (7), and further comprises a spring (8) and a toothed ring (9) mounted in the driving groove (201), one end of the spring (8) is pressed against the inner wall of the driving groove (201), the other end of the spring (8) is in contact with the toothed ring (9) and drives it to be pressed against the anti-falling component (7), and toothed grooves that engage with each other are provided on the side where the toothed ring (9) and the anti-falling component (7) contact each other.

10. An intermittent multiple locking mechanism for battery replacement according to claim 1, characterized in that: It also includes an end cover (10), which is mounted on the lock housing (2), and the end cover (10) cooperates with the notches of the drive slot (201) and the lock rod slot (202).

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