Intermittent multi-locking mechanism for battery replacement

Abstract

The utility model relates to a battery replacing structure, and discloses an intermittent multi-locking mechanism for replacing a battery, which comprises a mounting plate (1) arranged on a fixed end, a lock shell (2) for hanging a battery body, a lock rod assembly arranged in the lock shell (2), a positioning pin (51) fixedly arranged on the lock rod assembly, and a locking pin (51) fixedly arranged on the positioning pin (51), 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 utility model relates to the field of battery replacement, especially relates to a intermittent multiple locking mechanism for battery replacement. BACKGROUND

[0002] In recent years, the new energy heavy truck market in China has a strong growth momentum. In the field of new energy, pure electric technology is the most widely used and relatively mature, and the battery replacement new energy heavy truck is gradually favored by the market due to its fast energy supplement speed and longer cruising range. During the battery replacement process, a locking mechanism needs to be provided on the battery to realize the fixation and separation of the battery and the vehicle body. The quick-change lock needs to bear the heavy battery and needs to be frequently locked and unlocked during long-term use, which may cause fatigue failure. For new energy vehicles, how to improve the service life and reliability of the locking mechanism is a technical problem to be solved.

[0003] At present, vertical locking mechanisms are widely used in the market, which adopt a bolt structure. To improve the reliability, the tightening force needs to be increased, and the tighter the tightening force is, the more difficult the next disassembly will be, so that a large torque is needed for unlocking. If the disassembly convenience is improved, the tightening force needs to be reduced, which may affect the reliability of the locking mechanism. Increasing the tightening force of the lock needs to increase the input torque, and the locking mechanism may be easily damaged due to fatigue after overuse. Therefore, it is an inevitable trend in the industry to develop a locking mechanism that is compact, reliable, long in service life and high in reliability. SUMMARY

[0004] The utility model provides a intermittent multiple locking mechanism for battery replacement in view of the shortcoming in prior art.

[0005] To solve the above technical problems, the utility model solves them through the following technical schemes:

[0006] A intermittent multiple locking mechanism for battery replacement, comprising a mounting plate mounted on a fixed end, the mounting plate being provided with a lock hole, further comprising a lock shell for hanging a battery body, the lock shell being provided with a lock rod assembly rotatable and telescopic, the lock rod assembly being provided with a positioning pin fixed thereon, the lock shell being provided with a lock groove matched with the positioning pin, further comprising a driving shaft matched with the lock rod assembly and driving the lock rod assembly to move along the lock groove, the outer end of the lock rod assembly being provided with a lock block rotatably matched with the lock hole, the lock block being inserted through the lock hole and extending out of the mounting plate during installation, the driving shaft driving the lock rod assembly to rotate, so that the lock block rotates and cannot slide out of the lock hole, thereby completing the locking; the lock rod assembly has at least two groups, the driving shaft being matched with multiple lock rod assemblies, the driving shaft being rotated by a user through a motor or manual rotation, and the lock rod assembly being driven to rotate through gear meshing, thereby realizing the function of multiple locking.

[0007] As preferred, each group of lock rod assembly comprises a threaded sleeve and a screw rod, the lock block is fixed on the outer end of the screw rod, the threaded sleeve is matched with the external thread on the inner end of the screw rod and drives the screw rod to rotate, so that the rotated lock block is matched with the lock hole for locking; the positioning pin is fixed on the middle part of the screw rod. When the threaded sleeve and the screw rod work, they will rub against the inner hole of the lock shell and the end cover, affecting the service life of the locking mechanism. In the design, the threaded sleeve and the end cover can have a gap, and at the same time, elastic wear-resistant washers, wear-resistant washers and wear-resistant washers can be selectively added therebetween. The wear-resistant washers can be subjected to surface nitriding treatment to improve the surface hardness of the wear-resistant washers, which can effectively increase the service life of the mechanical nut and thus improve the service life of the whole lock.

[0008] As preferred, the threaded sleeve is fixed with a driven gear coaxially arranged thereon, and the driving shaft is fixed with a driving gear engaged with the driven gear.

[0009] As preferred, the driving gear is an incomplete gear structure, and the effective working angle of the working teeth on the driving gear is 60°-90°.

[0010] As preferred, the lock slot comprises a spiral groove and a straight groove arranged in sequence from outside to inside and communicated with each other, the spiral groove is provided with a spiral rubber, the material selection should have a certain deformation ability, and the assembly can selectively adopt glue fastening, so that the attached sand and dust on the surface is isolated outside, the contact between the internal parts and the air is reduced, the risk of rusting of the internal parts is reduced, the spiral groove is coaxial with the lock rod assembly and is spirally arranged, and the straight groove is arranged parallel to the axial direction of the lock rod assembly. Through the arrangement of the spiral groove, the lock block can be driven to rotate and realize the cooperation and locking with the lock hole; through the arrangement of the straight groove, the lock block can be in the locked state, the driving shaft can continue to rotate, and the distance between the battery body and the vehicle body can be adjusted along the straight groove direction while keeping the locked state, so as to reduce the distance between the battery body and the vehicle body.

[0011] As preferred, the spiral groove is a circular arc segment of 1° in the vertical projection plane.

[0012] As preferred, the lock hole is of a rectangular structure, the projection of the lock block on the mounting plate is rectangular, the lower surface of the lock block is connected with the screw rod through a thin rod, and the length and width of the lock hole are both greater than the length and width of the lock block, and the length of the lock block is greater than the width of the lock hole.

[0013] As preferred, the lock rod assembly has two groups and is arranged on the two sides of the driving shaft; the lock shell is provided with a driving groove and two lock rod grooves, the driving shaft is installed in the driving groove, and the lock rod assembly is installed in the lock rod groove.

[0014] As preferred, the opening end of the driving slot is threaded with a falling prevention piece, and the driving slot is further provided with a spring and a gear ring, 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 check ring on the inner wall of the driving slot, the other end of the spring is in contact with the gear ring and drives the gear ring to be pressed against the falling prevention piece, and the side of the gear ring and the falling prevention piece in contact with each other is provided with a tooth groove in engagement with each other.

[0015] As preferred, the end cover is installed on the lock shell through screws, and the end cover cooperates with the slot opening of the driving slot and the lock rod slot.

[0016] The utility model discloses a double lock mechanism, which comprises a lock shell, a lock block, a threaded sleeve, a screw rod, a driving shaft, a falling prevention piece, a spring and a gear ring. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the structure schematic diagram of the utility model.

[0018] Figure 2 is the sectional view of the utility model.

[0019] Figure 3 is Figure 2 the local enlarged view of

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

[0021] Figure 5 is the sectional view of the lock shell.

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

[0023] The names of the parts indicated by the respective numbers in the drawings are as follows: 1 - mounting plate, 2 - lock shell, 3 - lock block, 4 - threaded sleeve, 5 - screw rod, 6 - driving shaft, 7 - falling prevention piece, 8 - spring, 9 - gear ring, 10 - end cover, 11 - lock hole, 201 - driving slot, 202 - lock rod slot, 21 - lock slot, 211 - helical groove, 212 - straight groove, 41 - driven gear, 51 - positioning pin, 61 - driving gear. DETAILED DESCRIPTION

[0024] The utility model will be described in further detail below in combination with the drawings and examples. Example 1

[0025] The utility model provides a intermittent multiple locking mechanism for battery replacement, including the mounting plate 1 installed on the fixed end, is equipped with the lock hole 11 on the mounting plate 1, still includes the lock shell 2 for hanging the battery body, rotatable, telescopic lock rod assembly is installed in the lock shell 2, and the lock rod assembly is fixed with the positioning pin 51, and the lock shell 2 is equipped with the lock groove 21 matched with the positioning pin 51, still includes the drive shaft 6, and the drive shaft 6 is matched with the lock rod assembly and drives it along the lock groove 21, and the outer end of lock rod assembly is fixed with the lock block 3 that is matched with the lock hole 11, when installing, lock block 3 is passed through lock hole 11 and extends outside the mounting plate 1, and drive shaft 6 drives the rotation of lock rod assembly, so that lock block 3 rotates, and the lock block 3 after rotating cannot slide out from lock hole 11 and further completes locking, and the lock rod assembly has at least two groups, and drive shaft 6 is matched with multiple lock rod assemblies simultaneously, and the user rotates through motor or manually and the like to make drive shaft 6 rotate, and the rotation of lock rod assembly is driven through gear meshing and the like, so as to realize the function of multiple locking.

[0026] Each group of lock rod assembly includes threaded sleeve 4 and screw 5, and the lock block 3 is fixed on the outer end of screw 5, and the threaded sleeve 4 is matched with the external thread on the inner end of screw 5 and drives screw 5 to rotate, so that the lock block 3 after rotating is matched with lock hole 11 and is locked, and the positioning pin 51 is fixed on the middle part of screw 5, and when threaded sleeve 4 and screw 5 work, it will rub with the inner hole of lock shell 2 and end cap 10, affect the service life of locking mechanism, and the threaded sleeve 4 and end cap 10 can be designed to have a gap, and optionally, elastic wear-resistant washer, wear-resistant washer and wear-resistant washer can be additionally arranged in the middle, and the wear-resistant washer can be subjected to surface nitriding treatment, so as to improve the surface hardness of wear-resistant washer, effectively increase the service life of mechanical nut, and improve the service life of the whole lock. Example 2

[0027] The same as example 1, except that the threaded sleeve 4 is fixed with the driven gear 41 coaxially arranged on it, and the drive shaft 6 is fixed with the driving gear 61 engaged with the driven gear 41.

[0028] The driving gear 61 is an incomplete gear structure, and the effective working angle of the working teeth on the driving gear 61 is 76.2°. The gear intermittent transmission mechanism is adopted to realize locking and unlocking. The driving gear 61 is arranged on the driving shaft 6. After the driving shaft 6 is driven counterclockwise, the intermittent transmission of power is realized through the meshing and separation of the gears. The two threaded sleeves 4 are intermittently rotated clockwise. Through the action of the threaded pair, the screw rod 5 is locked downward. The gear intermittent structure can drive two locking members. The driving gear 61 has only a few teeth. The tooth circumference of the driven gear 41 is distributed on the threaded sleeve 4. Only when the driving gear 61 meshes with the driven gear 41, the corresponding threaded sleeve 4 can rotate through a certain angle. When the driving gear 61 does not mesh with the driven gear 41, the driven gear 41 is locked. Through the control of the number of teeth of the driving gear 61, the rotation speed of the threaded sleeve 4 is unified, and finally the interlocking is realized through the two threaded sleeves 4, so that the locking force is doubled. The locking mechanism generates a large locking force. The advantage of the gear intermittent structure over the threaded locking structure on the market is that the input tightening torque can be appropriately input. The friction force originally acting on the threaded pair is transferred to the gear transmission, so that the double locking mechanism has better stability and reliability in work, and the locking mechanism has a longer service life. Example 3

[0029] The same as example 1, except that the lock slot 21 includes a spiral groove 211 and a straight groove 212 arranged from outside to inside and communicated with each other, the spiral groove 211 is provided with a spiral rubber, the material selection has a certain deformation ability, and the assembly can be selectively adopted by adhesive fastening. In this way, the attached silt and dust on the surface can be isolated outside, the contact between the internal parts and the air is reduced, and the risk of rusting of the internal parts is reduced. The spiral groove 211 is coaxial and spiral with the lock rod assembly, and the straight groove 212 is 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 cooperation locking with the lock hole 11. Through the setting of the straight groove 211, the lock block 3 can continue to rotate in the locking state. While keeping the locking state, the distance between the battery body and the vehicle body can be adjusted along the direction of the straight groove 211, and the distance between the battery body and the vehicle body is reduced.

[0030] The spiral groove 211 is a 90° circular segment in the vertical projection plane.

[0031] The lock hole 11 is a rectangular structure, the projection of the lock block 3 on the mounting plate 1 is a rectangle, the lower surface of the lock block 3 is connected with the screw rod 5 through a thin rod, and the length and width of the lock hole 11 are greater than the length and width of the lock block 3. The length of the lock block 3 is greater than the width of the lock hole 11.

[0032] When the double-lock mechanism starts to lock, the driving shaft 6 rotates counterclockwise, the driving shaft 6 drives the threaded sleeve 4 to rotate clockwise through gear transmission, and the screw rod 5 rotates under the action of the threaded pair and the positioning pin 51. After rotating 90°, the screw rod 5 provides axial locking force to the mounting plate 1, and the structure of the double lock ensures the maximization of the stress area, thereby providing a huge axial locking force to the battery body. Then the driving shaft 6 continues to rotate counterclockwise, at this time the screw rod 5 is rotated and moved axially under the action of the straight groove 221 and the positioning pin 51, and the battery body is locked on the vehicle body.

[0033] When the double-lock mechanism starts to unlock, the driving shaft 6 rotates clockwise, the driving shaft 6 drives the threaded sleeve 4 to rotate counterclockwise through gear transmission, and the screw rod 5 moves up and down along its axial direction under the action of the threaded pair, the straight groove 221 and the positioning pin 51. Then the driving shaft 6 continues to rotate clockwise, and the screw rod 5 rotates 90° under the action of the helical groove 211 and the positioning pin 51. The locking block 3 on the screw rod 5 is parallel to the lock hole 11 on the mounting plate 1, so as to disassemble the battery body. Example 4

[0034] The same as example 1, except that the lock rod assembly has two groups and is arranged on the left and right sides of the driving shaft 6; the lock shell 2 is provided with a driving groove 201 and two lock rod grooves 202, and the driving shaft 6 is installed in the driving groove 201, and the lock rod assembly is installed in the lock rod groove 202. Example 5

[0035] The same as example 1, except that the opening end of the driving groove 201 is threaded with an anti-falling piece 7, and further comprising a spring 8 and a tooth ring 9 installed in the driving groove 201. The driving shaft 6 is a hexagonal shaft, the tooth 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 stop ring on the inner wall of the driving groove 201, the other end of the spring 8 is in contact with the tooth ring 9 and drives it to press against the anti-falling piece 7, and the side of the tooth ring 9 and the anti-falling piece 7 in contact with each other is provided with a tooth groove that engages with each other. The tooth ring 9 is pressed against the anti-falling piece 7 by the compression force of the spring 8, and the teeth of the tooth ring 9 and the anti-falling piece 7 engage with each other at this time. At this time, it cannot be rotated, the other side of the anti-falling piece 7 is processed with a stop block, the stop block is designed with five equal parts, and during assembly, the stop block is used to tighten the torque of the anti-falling piece 7 clockwise, so that the anti-falling piece 7 is fixed immovably at the opening end of the driving groove 201. At this time, an external driving piece is needed to cover the driving shaft 6 and push the tooth ring 9 open, so as to release the anti-falling engagement of the tooth ring 9 and the anti-falling piece 7, thereby performing the subsequent battery body locking work.

[0036] Further comprising an end cover 10, the end cover 10 is installed on the lock shell 2 by screws, and the end cover 10 cooperates with the slot openings of the driving groove 201 and the lock rod groove 202.

[0037] The end cover 10 is provided with mounting holes on both sides, and the mounting holes can be mounted with mechanical locking tongues and external hexagonal bolts. Due to the five-equal design of the stop block, after the tightening torque of the anti-falling piece 7, one side of the end cover 10 can avoid the stop block to install the mechanical locking tongues and the external hexagonal bolts of the mechanical protection device, so that the double protection effect is achieved. The design of the anti-loose device can effectively prevent the rotation of the threaded sleeve 4, ensure the effectiveness of the double-lock mechanism, and reduce the failure rate.

[0038] In summary, the above is only a preferred embodiment of the present application, and any changes and modifications made within the scope of the present application shall be within the scope of the present application.

Claims

1. An intermittent multiple locking mechanism for battery replacement, characterized by: The utility model provides a battery mounting device, including the mounting plate (1) of fixed end installation, be equipped with the lock hole (11) on mounting plate (1), still include the lock shell (2) for hanging the battery body, install lock rod assembly in lock shell (2), lock rod assembly is fixed with the locating pin (51) on, be equipped with the lock groove (21) of cooperation with locating pin (51) on lock shell (2), still include drive shaft (6), drive shaft (6) with lock rod assembly cooperation and drive it along lock groove (21) moves, lock rod assembly outer end is fixed with the lock block (3) of rotation cooperation with lock hole (11);Lock rod assembly at least has two groups, drive shaft (6) is with multiple lock rod assembly cooperation simultaneously.

2. An intermittent multi-lock mechanism for battery replacement according to claim 1, wherein: Each group of lock rod assembly includes threaded sleeve (4) and screw rod (5), lock block (3) is fixed at the outer end of screw rod (5), threaded sleeve (4) is with the external thread on the inner end of screw rod (5) cooperation and drive screw rod (5) rotation, locating pin (51) is fixed on screw rod (5).

3. An intermittent multi-lock mechanism for battery replacement according to claim 2, wherein: Threaded sleeve (4) is all fixed with driven gear (41), drive shaft (6) is fixed with driving gear (61) meshing with driven gear (41).

4. An intermittent multi-lock mechanism for battery replacement according to claim 3, wherein: Driving gear (61) is incomplete gear structure, and the effective working angle formed by the working teeth on driving gear (61) is 60°~90°.

5. An intermittent multi-lock mechanism for battery replacement according to claim 1, wherein: Lock groove (21) includes spiral groove (211) and straight groove (212) that are interconnected, spiral groove (211) is provided with spiral rubber, spiral groove (211) is coaxial with the lock rod assembly and is spirally arranged, and the straight groove (212) is arranged in parallel with the axial direction of the lock rod assembly.

6. An intermittent multi-lock mechanism for battery replacement according to claim 5, wherein: The spiral groove (211) is a 90° circular segment in the vertical projection plane.

7. An intermittent multi-lock mechanism for battery replacement according to claim 1, wherein: The lock hole (11) is of rectangular structure, the projection of the lock block (3) on the mounting plate (1) is rectangular, the length and width of the lock hole (11) are both greater than the length and width of the lock block (3), and the length of the lock block (3) is greater than the width of the lock hole (11).

8. An intermittent multi-lock mechanism for battery replacement according to claim 1, wherein: The lock rod assembly has two groups and is arranged on both sides of the drive shaft (6); the lock shell (2) is provided with a driving groove (201) and a lock rod groove (202), the drive shaft (6) is installed in the driving groove (201), and the lock rod assembly is installed in the lock rod groove (202).

9. An intermittent multi-lock mechanism for battery replacement according to claim 8, wherein: The opening end of the driving groove (201) is threadedly installed with an anti-falling piece (7), further comprising a spring (8) and a gear ring (9) installed in the driving groove (201), one end of the spring (8) is tightly pressed against the inner wall of the driving groove (201), the other end of the spring (8) is in contact with the gear ring (9) and drives the gear ring (9) to be tightly pressed against the anti-falling piece (7), and the side of the gear ring (9) and the anti-falling piece (7) in contact with each other is provided with a tooth groove that engages with each other.

10. The intermittent multi-lock mechanism for battery replacement of claim 1, wherein: Further comprising an end cover (10) installed on the lock shell (2), and the end cover (10) is matched with the openings of the driving groove (201) and the lock rod groove (202).

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