Anti-theft lock for battery box of electric vehicle

Abstract

The utility model relates to an anti-theft lock for a battery box of an electric vehicle, which comprises a lock body, a lock tongue mounting shaft hole and a lock cylinder mounting shaft hole are arranged in the lock body, a lock tongue is arranged in the lock tongue mounting shaft hole, the end part of the lock tongue is linked with a reset spring, a lock cylinder is arranged in the lock cylinder mounting shaft hole, and an unlocking groove structure is arranged on the lock tongue. The anti-theft lock is characterized in that a first spring and a steel ball are arranged between the lock cylinder and the lock cylinder installation shaft hole, a first installation shaft hole is formed in the periphery of the lock cylinder, the first spring is distributed in the first installation shaft hole, and the steel ball is in abutting connection with the inner circumferential face of the lock cylinder installation shaft hole under pushing of the first spring; a plurality of sets of grooves distributed at intervals are formed in the inner circumference of the lock cylinder installation shaft hole. The anti-theft lock for the battery box of the electric vehicle has the beneficial effects that the lock cylinder can stably keep the gear as long as the lock cylinder is not rotated by a hand when the gear of the battery box is taken out / installed or locked.

Description

Technical Field

[0001] The utility model specifically relates to an anti-theft lock for a battery box of an electric vehicle. Background Art

[0002] An electric vehicle is a mechatronic personal transportation vehicle that uses batteries as auxiliary energy and is equipped with motors, controllers, power batteries, control components such as handlebars, and display instrument systems. The battery is the main core component of an electric vehicle, and battery thefts often occur in the market. In order to solve the problem of battery theft, anti-theft locks for electric vehicle battery boxes have emerged.

[0003] For example, a Chinese utility model patent with publication number "CN218715948U" discloses an anti-theft lock for an electric bicycle battery box, which is mainly composed of a lock shell, a lock tongue, a lock core, etc., wherein the lock core is rotatably installed in the lock shell, and a second return spring is sleeved on the outer periphery of the lock core, and the lock tongue is retractably installed in an unlocking groove of the lock shell. The lock core can be turned with a key to control the extension and retraction of the lock tongue.

[0004] However, the above anti-theft lock has the following defects:

[0005] Firstly, a limit pin is provided between the lock core and the lock body. The limit pin can actually only limit the lock core along the axial direction of the lock core, but cannot limit the lock core along the circumferential direction of the lock core. The vehicle will inevitably shake during driving, so the lock core will rotate, so the lock core will not be stably in the gear position.

[0006] Secondly, the anti-theft performance is not high, mainly because the unlocking groove on the lock tongue is relatively wide. Without turning the lock cylinder to shift gears, the lock tongue can be moved using a special tool, and the lock tongue will slide in the locking cavity, and the battery box can be pulled out, so the anti-theft performance is poor. Utility Model Content

[0007] The technical problem to be solved by the utility model is that in view of the above-mentioned deficiencies in the prior art, when the battery box is removed / installed or locked, the lock core can stably maintain the gear position as long as the lock core is not rotated manually.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-theft lock for an electric vehicle battery box, comprising a lock body, a lock tongue mounting shaft hole and a lock core mounting shaft hole are provided in the lock body, a lock tongue is provided in the lock tongue mounting shaft hole, a reset spring is linked to the end of the lock tongue, a lock core is provided in the lock core mounting shaft hole, an unlocking groove structure is provided on the lock tongue, and an eccentric shifting block linked to the unlocking groove structure is provided at the end of the lock core, characterized in that a first spring and a steel ball are provided between the lock core and the lock core mounting shaft hole, a first mounting shaft hole is provided on the outer periphery of the lock core, the first spring is distributed in the first mounting shaft hole, the steel ball is in contact with the inner circumferential surface of the lock core mounting shaft hole under the push of the first spring, and a plurality of groups of grooves spaced apart from each other are provided on the inner periphery of the lock core mounting shaft hole.

[0009] By adopting the above technical solution, the lock core can be positioned by setting the first spring and the steel ball. No matter what gear state it is in, as long as the lock core is not turned by hand, the lock core can stably maintain the gear position. When turning from the lock gear to the unlock gear, insert the key, the blade retracts, the lock core is separated from the lock body, and the lock core can be driven to rotate by turning the key by hand. Since the force applied by the hand is greater than the friction between the steel ball and the inner wall of the lock body, the lock core will rotate until the lock core is turned to the unlock gear by hand. The steel ball will be stuck from one set of grooves to another set of grooves. After the steel ball is released by hand, the lock core will no longer rotate. Even if the vehicle shakes, it is not enough to cause the lock core to rotate, so the lock core can be stably maintained in the gear position. The same is true when turning from the unlock gear to the lock gear. Just reverse the key.

[0010] The above-mentioned anti-theft lock for the battery box of the electric vehicle can be further configured as follows: a limit pin and a second spring are provided between the lock core and the lock core mounting shaft hole, a second mounting shaft hole is provided on the lock body, the second mounting shaft hole is perpendicular to the lock core mounting shaft hole and the two are connected to each other, the second spring is distributed in the second mounting shaft hole, a limit ring groove is provided on the outer peripheral surface of the lock core, and the limit pin is inserted in the limit ring groove under the push of the second spring.

[0011] By adopting the above technical solution, on the basis of the limiting of the first spring and the steel ball, the connection stability between the lock core and the lock body is further enhanced to prevent the lock core from moving along the axis of the lock body. Compared with the prior art, the resistance force between the limit pin and the lock core can be adjusted adaptively to avoid rigid contact between the limit pin and the lock core, thereby reducing the wear of the outer peripheral surface of the lock core and protecting the lock core.

[0012] The above-mentioned anti-theft lock for the battery box of the electric vehicle can be further configured as follows: the second mounting shaft hole is hollow inside and has open ends; one end of the second spring is abutted against the limit pin and the other end is abutted against an adjustment block; the adjustment block is threadedly connected to the second mounting shaft hole; and the end of the adjustment block is located away from the second spring and is provided with a hexagonal hole.

[0013] By adopting the above technical solution, the hexagonal hole makes it convenient for tools such as wrenches to control the adjustment block, thereby better changing the position of the adjustment block in the second mounting shaft hole, and then changing the position of the limit pin, and adjusting the interference force between the limit pin and the lock core.

[0014] The above-mentioned anti-theft lock for the battery box of an electric vehicle can be further configured as follows: a plurality of groups of retention grooves spaced apart from each other are provided in the limiting ring groove, and each group of retention grooves is recessed toward the inside of the lock core.

[0015] By adopting the above technical solution, when the lock core is rotated to any gear position, the limit pin can be inserted into a group of retention grooves to limit the lock core along the axis direction of the lock core.

[0016] The above-mentioned anti-theft lock for the battery box of an electric vehicle can be further configured as follows: the unlocking groove structure includes a locking strip groove and a disassembly strip groove, the locking strip groove and the disassembly strip groove are conductively connected to each other and the two form an "L" shape, the disassembly strip groove is distributed along a direction parallel to the axis of the lock tongue, and the locking strip groove is distributed along a direction perpendicular to the axis of the lock tongue.

[0017] With the above technical solution, when the lock core is in the lock position, the eccentric shift block is located in the locking bar groove. At this time, no matter what tool is used, the lock tongue cannot be moved, and the lock tongue will not retract, thus truly realizing the anti-theft function. Furthermore, the lock core is rotated 90 degrees counterclockwise. At this time, the lock tongue remains in an extended state (this is mainly due to the action of the reset spring), but the eccentric shift block moves to the end of the locking bar groove, where the locking bar groove and the disassembly bar groove are connected to each other, so the battery box can be directly installed, and the battery box can squeeze the lock tongue until the battery box is installed. The lock tongue automatically resets under the action of the reset spring and locks the battery box. After the installation is completed, the lock core can be reset. When the lock core is switched from the lock position to the unlock position, the eccentric shift block will continue to drive the lock tongue to move until the lock tongue retracts and the battery box automatically pops up, and the battery box can be removed. In summary, the lock includes multiple gears, including a lock gear, an unlock gear, and an intermediate gear (which can be used to install a battery box, etc.). The diverse functions facilitate the disassembly and assembly of the battery box.

[0018] The above-mentioned anti-theft lock for the battery box of an electric vehicle can be further configured as follows: the end of the lock tongue is provided with a third mounting shaft hole distributed along a direction parallel to the axis of the lock tongue, one end of the return spring is connected to the lock body in abutment, and the other end is connected to the lock tongue in abutment through the third mounting shaft hole.

[0019] By adopting the above technical solution, a third mounting shaft hole is added to facilitate the positioning of the reset spring.

[0020] The utility model is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is an exploded schematic diagram of an embodiment of the utility model;

[0022] Figure 2 A schematic diagram of a lock tongue according to an embodiment of the utility model;

[0023] Figure 3 A schematic diagram of a lock core according to an embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of a lock body according to an embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the assembly state of an embodiment of the utility model;

[0026] Figure 6 It is a cross-sectional schematic diagram of an embodiment of the utility model.

[0027] Reference numerals: lock body 1, lock tongue 2, third mounting shaft hole 21, lock core 3, first mounting shaft hole 31, lock tongue mounting shaft hole 4, lock core mounting shaft hole 5, groove 51, return spring 6, eccentric shift block 7, first spring 8, steel ball 9, limit pin 10, second spring 11, second mounting shaft hole 12, limit ring groove 13, adjustment block 14, hexagon socket hole 15, retention groove 16, locking strip groove 17, disassembly strip groove 18. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figures 1 to 6The anti-theft lock for the battery box of an electric vehicle shown in the figure comprises a lock body 1, a bolt mounting shaft hole 4 and a lock core mounting shaft hole 5 are arranged in the lock body 1, a bolt 2 is arranged in the bolt mounting shaft hole 4, a reset spring 6 is linked to the end of the bolt 2, a lock core 3 is arranged in the lock core mounting shaft hole 5, an unlocking groove structure is arranged on the bolt 2, an eccentric shifting block 7 linked to the unlocking groove structure is arranged at the end of the lock core 3, a first spring 8 and a steel ball 9 are arranged between the lock core 3 and the lock core mounting shaft hole 5, a first mounting shaft hole 31 is arranged on the outer periphery of the lock core 3, the first spring 8 is distributed in the first mounting shaft hole 31, the steel ball 9 is pushed by the first spring 8 and is connected with the inner peripheral surface of the lock core mounting shaft hole 5, and two groups of grooves 51 spaced apart from each other are arranged on the inner periphery of the lock core mounting shaft hole 5. By setting the first spring 8 and the steel ball 9, the lock core 3 can be positioned, and no matter what gear state is in, as long as the lock core 3 is not rotated by hand, the lock core 3 can stably maintain the gear position. When the lock position is changed from the lock position to the unlock position, the key is inserted, the blade is retracted, the lock core 3 is separated from the lock body 1, and the lock core 3 can be driven to rotate by turning the key manually. Since the force applied by the human hand is greater than the friction between the steel ball 9 and the inner wall of the lock body 1, the lock core 3 will rotate until the lock core 3 is turned to the unlock position by the human hand, and the steel ball 9 will be inserted from one set of grooves 51 into another set of grooves 51. After the human hand releases the steel ball 9, the lock core 3 will not rotate anymore. Even if the vehicle shakes, it is not enough to cause the lock core 3 to rotate, so the lock core 3 can be stably maintained in the gear position. When the lock position is changed from the unlock position to the lock position, the same is true, and the key can be reversed.

[0030] A stop pin 10 and a second spring 11 are also provided between the lock core 3 and the lock core mounting shaft hole 5. A second mounting shaft hole 12 is provided on the lock body 1. The second mounting shaft hole 12 is perpendicular to the lock core mounting shaft hole 5 and the two are connected to each other. The second spring 11 is distributed in the second mounting shaft hole 12. A stop ring groove 13 is provided on the outer peripheral surface of the lock core 3. The stop pin 10 is inserted into the stop ring groove 13 under the push of the second spring 11. On the basis of the limit of the first spring 8 and the steel ball 9, the connection stability between the lock core 3 and the lock body 1 is further enhanced to prevent the lock core 3 from moving along the axis direction of the lock body 1. Compared with the prior art, the resistance force between the stop pin 10 and the lock core 3 can be adjusted adaptively to avoid rigid contact between the stop pin 10 and the lock core 3, thereby reducing the wear of the outer peripheral surface of the lock core 3 and protecting the lock core 3.

[0031] The second mounting shaft hole 12 is hollow inside and has openings at both ends. One end of the second spring 11 is in contact with the limit pin 10 and the other end is in contact with an adjustment block 14. The adjustment block 14 is threadedly connected to the second mounting shaft hole 12. The end of the adjustment block 14 located away from the second spring 11 is provided with a hexagonal hole 15. The hexagonal hole 15 facilitates the control of the adjustment block 14 by tools such as a wrench, so as to better change the position of the adjustment block 14 in the second mounting shaft hole 12, thereby changing the position of the limit pin 10 and adjusting the contact force between the limit pin 10 and the lock core 3.

[0032] The limiting ring groove 13 is provided with three groups of retention grooves 16 spaced apart from each other, and each group of retention grooves 16 is recessed toward the lock core 3. When the lock core 3 rotates to any gear position, the limiting pin 10 can be inserted into a group of retention grooves 16 to limit the lock core 3 along the axial direction of the lock core 3.

[0033] The unlocking groove structure includes a locking strip groove 17 and a disassembly strip groove 18. The locking strip groove 17 and the disassembly strip groove 18 are connected to each other and form an "L" shape. The disassembly strip groove 18 is distributed along a direction parallel to the axis of the lock tongue 2, and the locking strip groove 17 is distributed along a direction perpendicular to the axis of the lock tongue 2. The lock includes multiple gears, a lock gear, an unlock gear, and an intermediate gear (which can be used to install a battery box, etc.), and has diverse functions.

[0034] The end of the lock tongue 2 is provided with a third mounting shaft hole 21 distributed in a direction parallel to the axis of the lock tongue 2. One end of the reset spring 6 is connected to the lock body 1 and the other end is connected to the lock tongue 2 through the third mounting shaft hole 21. The third mounting shaft hole 21 is added to facilitate the positioning of the reset spring 6.

[0035] Specific operation method:

[0036] When the lock core 3 is in the locking position, the eccentric shifting block 7 is located in the locking strip groove 17. At this time, no matter what kind of tool is used, the lock tongue 2 cannot be moved, and the lock tongue 2 will not retract, thereby truly realizing the anti-theft function.

[0037] The lock gear is switched to the middle gear, the key is inserted, the blade is retracted, the lock core 3 is separated from the lock body 1, and the key is turned manually to drive the lock core 3 to rotate 90 degrees. Since the force applied by the human hand is greater than the friction between the steel ball 9 and the inner wall of the lock body 1, the lock core 3 will rotate until the human hand turns the lock core 3 to the middle gear, and the steel ball 9 will be stuck from one group of grooves 51 to the next group of grooves 51. After the human hand releases the steel ball 9, the lock core 3 will not rotate anymore. Even if the vehicle shakes, it is not enough to cause the lock core 3 to rotate, so the lock core 3 can be stably maintained in the gear position. At this time, the lock tongue 2 still remains in the extended state (this is mainly due to the action of the reset spring 6), but the eccentric shift block 7 moves to the end of the locking strip groove 17, and the lock tongue 2 is partially retracted under the drive of the eccentric shift block 7, but is not completely retracted into the lock tongue mounting shaft hole 4, and the locking strip groove 17 and the disassembly strip groove 18 here are connected to each other. Therefore, the battery box can be directly installed, and the battery box can squeeze the lock tongue 2 until the battery box is installed. The lock tongue 2 is automatically reset under the action of the reset spring 6 to lock the battery box. After the installation is completed, the lock core 3 can be reset.

[0038] The lock gear is switched to the unlock gear, the key is inserted, the blade retracts, the lock core 3 is separated from the lock body 1, and the key is turned manually to drive the lock core 3 to rotate 140 degrees. The eccentric shift block 7 not only moves to the end of the locking strip groove 17, but also can drive the lock tongue 2 to completely retract into the lock tongue mounting shaft hole 4, and the battery box can be directly removed or installed. After disassembly and assembly are completed, the lock core 3 can be reset.

Claims

1. An anti-theft lock for an electric vehicle battery box, comprising a lock body, wherein a lock tongue mounting shaft hole and a lock core mounting shaft hole are provided in the lock body, a lock tongue is provided in the lock tongue mounting shaft hole, a reset spring is linked to the end of the lock tongue, a lock core is provided in the lock core mounting shaft hole, an unlocking groove structure is provided on the lock tongue, and an eccentric shifting block linked to the unlocking groove structure is provided at the end of the lock core, characterized in that: A first spring and a steel ball are provided between the lock core and the lock core mounting shaft hole. A first mounting shaft hole is provided on the outer periphery of the lock core. The first spring is distributed in the first mounting shaft hole. The steel ball is connected with the inner peripheral surface of the lock core mounting shaft hole under the push of the first spring. A plurality of groups of grooves spaced apart from each other are provided on the inner periphery of the lock core mounting shaft hole.

2. The anti-theft lock for the battery box of an electric vehicle according to claim 1, characterized in that: A limit pin and a second spring are also provided between the lock core and the lock core mounting shaft hole. A second mounting shaft hole is provided on the lock body. The second mounting shaft hole is perpendicular to the lock core mounting shaft hole and the two are connected to each other. The second spring is distributed in the second mounting shaft hole. A limit ring groove is provided on the outer peripheral surface of the lock core. The limit pin is inserted in the limit ring groove under the push of the second spring.

3. The anti-theft lock for the battery box of an electric vehicle according to claim 2, characterized in that: The second mounting shaft hole is hollow inside and has openings at both ends. One end of the second spring is connected to a limit pin and the other end is connected to an adjustment block. The adjustment block is threadedly connected to the second mounting shaft hole. The end of the adjustment block away from the second spring is provided with a hexagonal hole.

4. The anti-theft lock for the battery box of an electric vehicle according to claim 2, characterized in that: A plurality of groups of retention grooves spaced apart from each other are arranged in the limiting ring groove, and each group of retention grooves is recessed toward the inside of the lock core.

5. The anti-theft lock for an electric vehicle battery box according to any one of claims 1 to 4, characterized in that: The unlocking groove structure includes a locking strip groove and a disassembly strip groove. The locking strip groove and the disassembly strip groove are conductively connected to each other and form an "L" shape. The disassembly strip groove is distributed in a direction parallel to the axis of the lock tongue, and the locking strip groove is distributed in a direction perpendicular to the axis of the lock tongue.

6. The anti-theft lock for an electric vehicle battery box according to any one of claims 1 to 4, characterized in that: The end of the lock tongue is provided with a third mounting shaft hole distributed in a direction parallel to the axis of the lock tongue. One end of the reset spring is connected to the lock body in abutment with the lock body, and the other end is connected to the lock tongue in abutment with the lock tongue through the third mounting shaft hole.

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