Electric anti-theft lock

Abstract

The utility model discloses an electric anti-theft lock which comprises a lock catch piece and a lock hook piece which are rotationally arranged on a lock plate, and a spring piece connected between the lock catch piece and the lock hook piece, and a detection switch located on the motion path of the lock catch piece or the lock hook piece is arranged on the lock plate. A locking limiting groove and an unlocking limiting groove which are distributed up and down are formed in the side, facing the lock catch piece, of the lock hook piece, the lock catch piece is provided with a lock catch protrusion, and when the lock catch piece and the lock hook piece are in a locked state, the lock catch protrusion is driven to be clamped in the locking limiting groove in an abutting mode to form limiting fit. In the unlocking state, the lock catch protrusion is driven to abut against the interior of the unlocking limiting groove to form limiting fit, and through the limiting fit formed by the lock catch protrusion and the unlocking limiting groove, the lock hook piece and the lock catch piece are kept to be located at the relative positions in the unlocking state; therefore, the lock hook piece or the lock catch piece is prevented from shaking due to the influence of vibration and external force touch, and the signal detection accuracy and reliability of the detection switch are ensured.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically to an electric anti-theft lock. Background Technology

[0002] Electric bikes and mopeds have become an important means of transportation in people's daily lives. Due to their size and weight limitations, they are difficult to carry around, so people need to store them at office buildings or temporary parking lots in residential areas. However, theft of the entire vehicle or battery frequently occurs, resulting in property loss for users. To address theft prevention, electric locks are now commonly installed on electric bikes and mopeds. These locks lock the bikes after they are parked to prevent theft.

[0003] An existing type of electronic lock plate includes a lock hook, a latch, and a drive assembly module mounted on the lock plate. A spring is installed between the lock hook and the latch. The drive assembly module includes a motor, a gear set, and a push block. When the lock hook and the latch rotate and interlock, they form a locking engagement, realizing the locking function of the electronic lock plate. When the motor drives the push block to move, it pushes the lock hook and the latch to separate and complete the unlocking. During the unlocking rotation process, the lock plate triggers a detection switch mounted on the lock plate, thereby detecting the locking and unlocking status of the electronic lock plate. However, when the existing lock hook and latch are unlocked and disengaged, they quickly separate from each other under the action of the spring. At this time, the lock hook is easily shaken by vibration or external force without any constraint, causing unstable contact between the lock hook and the detection switch, resulting in unstable signal detection of the detection switch. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the problem that in the prior art, the electric control lock plate is prone to shaking due to vibration or external force after unlocking, which causes unstable contact between the lock hook and the detection switch, resulting in unstable signal detection of the detection switch.

[0005] To solve the above-mentioned technical problems, this utility model provides an electric anti-theft lock, including a lock plate with a lock opening, a lock buckle and a lock hook rotatably disposed on the lock plate, and a spring connecting the lock buckle and the lock hook. The lock plate is provided with a detection switch located on the movement path of the lock buckle or the lock hook. The lock buckle and the lock hook have a locked state in which they are rotatably interlocked to lock the lock opening, and an unlocked state in which they are rotatably separated to open the lock opening. The lock hook has a locking limit groove and an unlocking limit groove distributed vertically on the side facing the lock buckle. The lock buckle has a lock buckle protrusion that switches positions between the locking limit groove and the unlocking limit groove. When the lock buckle and the lock hook are in the locked state, the lock buckle protrusion is driven to engage with the locking limit groove to form a limiting fit. When the lock buckle and the lock hook are in the unlocked state, the lock buckle protrusion is driven to engage with the unlocking limit groove to form a limiting fit, so that the lock hook and the lock buckle maintain a relative position in the unlocked state.

[0006] In the aforementioned electric anti-theft lock, the lock hook includes a V-shaped protrusion formed between the locking limit groove and the unlocking limit groove, and two guide bevels on both sides of the V-shaped protrusion are respectively connected to the locking limit groove and the unlocking limit groove.

[0007] In the aforementioned electric anti-theft lock, the lock hook is provided with a U-shaped lock groove located on the upper side of the locking limit groove, and the lock hook in the locked state causes the U-shaped lock groove to overlap with the lock opening.

[0008] In the aforementioned electric anti-theft lock, the lock buckle and lock hook are each provided with two connecting holes on the same horizontal plane, and the two ends of the spring are respectively hooked into the two connecting holes.

[0009] In the aforementioned electric anti-theft lock, a receiving space for accommodating the spring is formed between the lock buckle, the lock hook, and the lock plate. The receiving space includes a spring groove formed on the lock plate corresponding to the position of the spring.

[0010] In the aforementioned electric anti-theft lock, a drive assembly is installed on the lock plate to drive the lock buckle and lock hook to switch from a locked state to an unlocked state. The drive assembly is installed on the same side of the lock plate as the lock buckle and lock hook. The drive assembly includes an assembly housing installed on the lock plate and a motor, gear assembly, and rotating seat disposed in the assembly housing. The gear assembly includes at least one driven gear connected to the motor and a drive gear meshing with the driven gear. The drive gear is coaxially rotatably disposed with the rotating seat. The lock buckle is disposed on the movement trajectory of the rotating seat. The rotating seat drives the lock buckle to rotate under the drive of the drive gear.

[0011] In the aforementioned electric anti-theft lock, the assembly housing and the lock plate are connected to form an external cavity for accommodating and installing the rotating seat. The assembly housing includes an internal cavity with a motor and gear assembly and a through hole connecting the internal cavity and the external cavity. The drive gear has a drive shaft that passes through the through hole and connects to the rotating seat. One end of the lock buckle extends into the external cavity and engages with the rotating seat.

[0012] In the aforementioned electric anti-theft lock, a return mechanism is provided between the drive gear and the assembly housing. The return mechanism includes a return torsion spring sleeved on the drive shaft, an upper limit hole or upper limit groove provided on the drive gear, and a lower limit hole or lower limit groove provided on the assembly housing. One end of the return torsion spring extends and is connected to the upper limit groove or upper limit hole, and the other end extends and is connected to the lower limit groove or lower limit hole. The drive gear and the assembly housing are connected to form a spring groove suitable for accommodating the return torsion spring.

[0013] In the aforementioned electric anti-theft lock, the detection switch is installed between the assembly housing and the lock plate. The detection switch has a button portion that engages with the bottom end of the lock hook. When the lock hook is in the unlocked state, its bottom end presses against the button portion.

[0014] In the aforementioned electric anti-theft lock, the bottom of the assembly housing is provided with a mounting groove for installing a detection switch, and a lead wire groove connecting the mounting groove and the internal cavity, so that the detection line from the detection switch passes through the lead wire groove into the internal cavity and connects to the control circuit board. The assembly housing is detachably mounted on the lock plate through a fixing structure, and the detection switch located in the mounting groove is limited and pressed by the lock plate.

[0015] The present invention has the following advantages over the prior art:

[0016] 1. In the electric anti-theft lock provided by this utility model, when the electric anti-theft lock plate is locked, it drives the latch and the hook to engage together. Specifically, the latch drives the latch protrusion to lock in the first limiting groove of the hook to form a limiting fit, thereby keeping the hook and latch in the locked state and ensuring locking reliability. At this time, the hook will not trigger the detection switch. When the electric anti-theft lock is unlocked, it drives the hook and latch to rotate and separate. At this time, the latch is driven by the spring force to switch the latch protrusion to lock in the unlocking limiting groove. At the same time, the hook triggers the detection switch to send a signal indicating that the product is unlocked. The limiting fit formed by the latch protrusion and the unlocking limiting groove keeps the hook and latch in the unlocked state and maintains their relative position, preventing the hook or latch from shaking due to vibration and external force. This ensures stable contact between the hook and the detection switch, and ensures the accuracy and reliability of signal detection. This design significantly improves the reliability and durability of the electric lock product in locking and unlocking.

[0017] 2. In the electric anti-theft lock provided by this utility model, a return torsion spring is provided between the drive gear and the assembly housing. One end of the return torsion spring extends into the upper limit groove or upper limit hole formed by the drive gear, and the other end extends into the upper limit groove or upper limit hole formed by the drive gear. This installation restricts both ends of the torsion spring. The advantage of this design is that when the drive gear drives the rotating seat to rotate in the forward or reverse direction, it will compress the torsion spring, so that the torsion spring has two deformation states: deformation contraction and deformation expansion, depending on the direction of compression. The torsion spring in both deformation states will store energy and apply a return elastic force to the drive gear. This allows the drive gear and driven gear to return to mesh in the event of tooth disengagement during unlocking or locking, thanks to the elastic force. During tooth disengagement, the gear meshing force can be released, ensuring that the motor drives the rotating seat to rotate through gear transmission when it starts again. This effectively protects the motor, ensures the stability and reliability of the anti-theft lock plate transmission system, ensures rapid locking and unlocking response of the product, and significantly improves the reliability, durability and operational efficiency of the anti-theft lock plate locking and unlocking.

[0018] 3. In the electric anti-theft lock provided by this utility model, the detection switch is installed in the mounting groove at the bottom of the lock housing, and then the entire drive assembly is installed on the lock plate. When the lock plate and the lock housing are installed together, they press against the detection switch located in the mounting groove, thereby achieving the installation and fixation of the detection switch between the lock housing and the lock plate. Since the trigger part of the detection switch extends out of the mounting groove and is located on the movement path of the lock hook, the lock hook contacts the trigger part of the detection switch during the unlocking rotation, thereby driving the detection switch to send a signal to indicate that the electric lock is unlocked. This allows the staff to clearly know the working status of the product. The installation structure of this detection switch is simple and easy to disassemble and assemble.

[0019] 4. In the electric anti-theft lock provided by this utility model, two connecting holes on the same horizontal plane are provided on the lock buckle and lock hook, and the two ends of the spring are hooked to the two connecting holes respectively. A slot structure suitable for accommodating the spring is provided between the lock buckle, lock hook and lock plate. The advantage of this design is that by designing the slot structure, space is left between the lock plate, lock buckle and lock hook for installing the spring, so that the force applied by the spring on the lock buckle and lock hook is in the same horizontal direction. This balance of forces during installation ensures the stability and reliability of the elastic connection between the lock buckle and lock hook through the spring. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below.

[0021] Figure 1 This is a schematic diagram of the electric anti-theft lock of this utility model in the locked state;

[0022] Figure 2 This is a schematic diagram of the structure of the electric anti-theft lock of this utility model in the unlocked state;

[0023] Figure 3 This is a three-dimensional structural diagram of the electric anti-theft lock of this utility model;

[0024] Figure 4 This is a schematic diagram of the installation structure of the return torsion spring of this utility model;

[0025] Figure 5 This is a schematic diagram of the bottom configuration of the drive assembly of this utility model.

[0026] Explanation of reference numerals in the attached drawings: 1. Lock plate; 11. External cavity; 12. Hollow slot structure; 13. Lock opening; 2. Lock hook; 21. Locking limit slot; 22. Unlocking limit slot; 23. U-shaped lock slot; 24. V-shaped protrusion; 3. Locking buckle; 31. Locking buckle protrusion; 4. Drive assembly; 40. Spring slot; 41. Assembly housing; 42. Motor; 43. Driven gear; 44. Drive gear; 45. Rotating seat; 46. Drive shaft; 47. Internal cavity; 48. Mounting slot; 49. Lead wire slot; 5. Return torsion spring; 6. Upper limit hole; 7. Lower limit slot; 8. Spring; 81. Connecting hole; 9. Detection switch. Detailed Implementation

[0027] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0031] Example

[0032] The following is a detailed description of this embodiment with reference to the accompanying drawings:

[0033] This utility model provides, for example Figure 1-5 An electric anti-theft lock is shown, comprising a lock plate 1 with a lock opening 13, a lock catch 3 and a lock hook 2 rotatably disposed on the lock plate 1, and a spring 8 connected between the lock catch 3 and the lock hook 2. The lock plate 1 is provided with a detection switch 9 located on the movement path of the lock catch 3 or the lock hook 2. The lock catch 3 and the lock hook 2 have a locked state where they are rotatably interlocked to lock the lock opening 13, and an unlocked state where they are rotatably separated to open the lock opening 13. The lock hook 2 has upper and lower sections on the side facing the lock catch 3. The fabric has a locking limiting groove 21 and an unlocking limiting groove 22. The locking fastener 3 is provided with a locking protrusion 31 that switches positions between the locking limiting groove 21 and the unlocking limiting groove 22. When the locking fastener 3 and the locking hook 2 are in the locked state, the locking protrusion 31 is driven to engage with the locking limiting groove 21 to form a limiting engagement. When the locking fastener 3 and the locking hook 2 are in the unlocked state, the locking protrusion 31 is driven to engage with the unlocking limiting groove 22 to form a limiting engagement, so that the locking hook 2 and the locking fastener 3 maintain a relative position in the unlocked state.

[0034] The above-described implementation method is the core technical solution of this embodiment. When the electronically controlled anti-theft lock plate 1 is locked, it will drive the lock buckle 3 and the lock hook 2 to engage together. Specifically, the lock buckle 3 drives the lock buckle protrusion 31 to engage in the first limiting groove of the lock hook 2 to form a limiting fit, thereby keeping the lock hook 2 and the lock buckle 3 in the locked state and ensuring the reliability of the locking. At this time, the lock hook 2 will not trigger the detection switch 9. When the electronically controlled anti-theft lock is unlocked, it will drive the lock hook 2 and the lock buckle 3 to rotate and separate. At this time, the lock buckle is driven by the spring force to switch the lock buckle protrusion 31. The latch 2 is engaged in the unlocking limit groove 22, which simultaneously triggers the detection switch 9 to send a signal indicating that the product is unlocked. The latch protrusion 31 and the unlocking limit groove 22 form a limiting engagement, which keeps the latch 2 and the latch 3 in the unlocked state in a relatively fixed position. This prevents the latch 2 or the latch 3 from shaking due to vibration or external force, thus ensuring stable contact between the latch and the detection switch and ensuring the accuracy and reliability of signal detection. This design significantly improves the reliability and durability of the electric lock product in locking and unlocking.

[0035] For further optimization settings, refer to Figure 1-2 The locking hook 2 is provided with a U-shaped locking groove 23 located on the upper side of the locking limiting groove 21. When the locking hook 2 is in the locked state, it drives the U-shaped locking groove 23 to partially overlap with the lock opening 13. During the locking operation, inserting the external lock head into the lock opening 13 of the lock plate 1 will push the locking buckle 3 to rotate. At this time, the locking buckle 33 cooperates with the locking hook 22 under the action of the external lock head to realize the locking operation of the electric lock, that is, the external lock head is locked in the lock opening 13 position by the U-shaped locking groove 23 of the locking hook 2. Meanwhile, the locking buckle 3 and the locking hook 2 are limited in the locking limiting groove 21 by the locking buckle protrusion 31 to form a locked state. The locking hook 2 includes a V-shaped protrusion 24 formed between the locking limiting groove 21 and the unlocking limiting groove 22. The V-shaped protrusion 24 has two guide bevels on both sides that connect the locking limiting groove 21 and the unlocking limiting groove 22 respectively. The locking limiting groove 21 and the unlocking limiting groove 22 are both V-shaped groove structures. The locking buckle protrusion 31 is guided to switch between the locking limiting groove 21 and the unlocking limiting groove 22 by the V-shaped protrusion 24, thereby realizing that the locking buckle 3 and the locking hook 2 maintain a relative position lock in the locked or unlocked state.

[0036] Combination Figure 1-3As shown, the locking fastener 3 and the locking hook 2 are each provided with two connecting holes 81 on the same horizontal plane. The two ends of the spring 8 are respectively hooked into the two connecting holes 81. The locking fastener 3, the locking hook 2 and the locking plate 1 form a receiving space for accommodating the spring 8. The receiving space includes a spring groove 40 opened on the locking plate 1 corresponding to the position of the spring 8. The spring groove 40 is opened to make room for the installation of the spring 8 and to reduce the installation height of the spring 8. This installation design makes the two ends of the spring 8 at the same installation height, so that the force applied by the spring 8 to the locking fastener 3 and the locking hook 2 is in the same horizontal direction. This avoids the unbalanced force caused by the traditional spring with one end higher and the other lower. This balanced installation ensures the stability and reliability of the elastic connection between the locking fastener 3 and the locking hook 2 through the spring 8.

[0037] In this embodiment, a drive assembly 4 is installed on the lock plate 1 to drive the lock buckle 3 and lock hook 2 to switch from the locked state to the unlocked state. The drive assembly 4 is installed on the same side of the lock plate 1 as the lock buckle 3 and lock hook 2. The drive assembly includes an assembly housing 41 installed on the lock plate 1 and a motor 42, a gear assembly, and a rotating seat 45 disposed in the assembly housing 41. The gear assembly includes at least one driven gear 43 connected to the motor 42 and a drive gear 44 meshing with the driven gear 43. The drive gear 44 is coaxially rotatably disposed with the rotating seat 45. The lock buckle 3 is disposed on the movement trajectory of the rotating seat 45. The rotating seat 45 drives the lock buckle 3 to rotate under the drive of the drive gear 44. The motor 42 drives the rotating seat 45 to rotate through gear transmission, thereby realizing the unlocking and separation between the lock buckle 3 and the lock hook 2, and finally realizing the automatic unlocking of the electric anti-theft lock.

[0038] In a further preferred configuration, the assembly housing 41 and the locking plate 1 are connected to form an external cavity 11 for accommodating and installing the rotating seat 45. The assembly housing 41 includes an internal cavity 47 with a motor 42 and a gear assembly, and a through hole connecting the internal cavity 47 and the external cavity 11. The drive gear 44 has a drive shaft 46 that passes through the through hole and connects to the rotating seat 45. One end of the locking fastener 3 extends into the external cavity 11 and cooperates with the rotating seat 45. This structural configuration, by reasonably optimizing the use of the external cavity formed between the lock housing and the locking plate 1 to meet the installation requirements of the rotating seat, has a compact structure, occupies little installation space, has reliable cooperation, and low cost.

[0039] like Figure 3-4As shown, a return mechanism is provided between the drive gear 44 and the assembly housing 41. The return mechanism includes a return torsion spring 5 sleeved on the drive shaft 46, an upper limit hole 6 or upper limit groove provided on the drive gear 44, and a lower limit hole or lower limit groove 7 provided on the assembly housing 41. One end of the return torsion spring 5 extends and is connected to the upper limit groove or upper limit hole 6, and the other end extends and is connected to the lower limit groove or lower limit hole. The drive gear 44 and the assembly housing 41 are connected to form a spring groove 40 suitable for accommodating the return torsion spring 5. This installation restricts the two ends of the torsion spring. The advantage of this technical method is that the drive gear 44 drives the rotating seat 45 to rotate in the forward or reverse direction. When the device is in motion, it compresses the torsion spring, causing the torsion spring to have two deformation states depending on the direction of compression: deformation contraction and deformation expansion. In both deformation states, the torsion spring stores energy and applies a return elastic force to the drive gear 44. This allows the drive gear 44 and the driven gear 43 to return to their original meshing state in the event of tooth disengagement during unlocking or locking, thanks to the elastic force. During tooth disengagement, the gear meshing force is released, ensuring that the rotating seat is driven to rotate via gear transmission when the motor starts again. This effectively protects the motor, ensures the stability and reliability of the anti-theft lock plate transmission system, guarantees rapid locking and unlocking response, and significantly improves the reliability, durability, and operational efficiency of the anti-theft lock plate's locking and unlocking.

[0040] The following is combined with Figure 1-2 , Figure 5 The specific installation method of the detection switch is explained in detail:

[0041] The detection switch 9 is installed between the assembly housing 41 and the locking plate 1. The detection switch 9 has a button portion that contacts the bottom end of the locking hook 2. When the locking hook 2 is in the unlocked state, its bottom end presses against the button portion, thereby triggering the detection switch 9 to send a signal indicating unlocking. The detection switch 9 is preferably a micro switch. The bottom of the assembly housing 41 is provided with a mounting groove 48 for installing the detection switch 9, and a lead wire groove 49 connecting the mounting groove 48 and the internal cavity 47. The power line of the motor 42 extends from the internal cavity into the lead wire groove, and the detection lines from the detection switch 9 converge in the lead wire groove to connect with external control equipment. The lead wire groove meets the wiring requirements of the power line and the detection line, and avoids damaging the line during installation. The assembly housing 41 is detachably installed on the locking plate 1 by a fixing structure, and the locking plate 1 limits and presses against the detection switch 9 located in the mounting groove 48. This structural design involves installing the detection switch 9 in the mounting groove 48 at the bottom of the lock housing, and then installing the entire drive assembly 4 onto the lock plate 1. When the lock plate 1 and lock housing are installed together, they press against the detection switch 9 located in the mounting groove 48, thus securing the detection switch 9 between the lock housing and the lock plate 1. Since the trigger part of the detection switch 9 extends out of the mounting groove 48 and is located on the movement path of the lock hook 2, the lock hook 2 presses against the trigger part of the detection switch 9 during unlocking rotation, thereby driving the detection switch to send a signal indicating that the electronically controlled lock is unlocking. This allows staff to clearly understand the product's working status. This detection switch installation structure is simple and easy to install and remove.

[0042] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An electric anti-theft lock, comprising a lock plate (1) having a lock opening (13) and a lock buckle (3) and a lock hook (2) rotatably disposed on the lock plate (1), and a spring member (8) connected between the lock buckle (3) and the lock hook (2), wherein the lock plate (1) is provided with a detection switch (9) located on the movement path of the lock buckle (3) or the lock hook (2), and the lock buckle (3) and the lock hook (2) have a locked state in which they are rotatably interlocked to lock the lock opening (13), and an unlocked state in which they are rotatably separated to open the lock opening (13); characterized in that: The locking hook (2) has a locking limiting groove (21) and an unlocking limiting groove (22) distributed vertically on the side facing the locking buckle (3). The locking buckle (3) has a locking protrusion (31) that switches positions between the locking limiting groove (21) and the unlocking limiting groove (22). When the locking buckle (3) and the locking hook (2) are in the locked state, the locking protrusion (31) is driven to abut against the locking limiting groove (21) to form a limiting fit. When the locking buckle (3) and the locking hook (2) are in the unlocked state, the locking protrusion (31) is driven to abut against the unlocking limiting groove (22) to form a limiting fit.

2. The electric anti-theft lock according to claim 1, characterized in that: The locking hook (2) includes a V-shaped protrusion (24) formed between the locking limiting groove (21) and the unlocking limiting groove (22), and the V-shaped protrusion (24) has two guide bevels on both sides that connect the locking limiting groove (21) and the unlocking limiting groove (22) respectively.

3. The electric anti-theft lock according to claim 2, characterized in that: The locking hook (2) is provided with a U-shaped locking groove (23) located on the upper side of the locking limiting groove (21). When the locking hook (2) is in the locked state, the U-shaped locking groove (23) is partially overlapped with the lock opening (13).

4. The electric anti-theft lock according to claim 1, characterized in that: The locking fastener (3) and the locking hook (2) are respectively provided with two connecting holes (81) on the same horizontal plane, and the two ends of the spring (8) are respectively hooked into the two connecting holes (81).

5. The electric anti-theft lock according to claim 4, characterized in that: The locking fastener (3), the locking hook (2), and the locking plate (1) form a receiving space for accommodating the spring (8), and the receiving space includes a spring groove (40) opened on the locking plate (1) corresponding to the position of the spring (8).

6. The electric anti-theft lock according to any one of claims 1-5, characterized in that: The lock plate (1) is equipped with a drive assembly (4) that drives the locking fastener (3) and the locking hook (2) to switch from the locked state to the unlocked state. The drive assembly (4) is installed on the same side of the lock plate (1) as the locking fastener (3) and the locking hook (2). The drive assembly includes an assembly housing (41) installed on the lock plate (1) and a motor (42), a gear assembly and a rotating seat (45) disposed in the assembly housing (41). The gear assembly includes at least one driven gear (43) connected to the motor (42) and a drive gear (44) meshing with the driven gear (43). The drive gear (44) is coaxially rotatably disposed with the rotating seat (45). The locking fastener (3) is disposed on the movement trajectory of the rotating seat (45). The rotating seat (45) drives the locking fastener (3) to rotate under the drive of the drive gear (44).

7. The electric anti-theft lock according to claim 6, characterized in that: The assembly housing (41) and the locking plate (1) are connected to form an external cavity (11) for accommodating the rotating seat (45). The assembly housing (41) includes an internal cavity (47) with a motor (42) and a gear assembly and a through hole connecting the internal cavity (47) and the external cavity (11). The drive gear (44) has a drive shaft (46) that passes through the through hole and connects to the rotating seat (45). One end of the locking member (3) extends into the external cavity (11) and engages with the rotating seat (45).

8. The electric anti-theft lock according to claim 7, characterized in that: A return mechanism is provided between the drive gear (44) and the assembly housing (41). The return mechanism includes a return torsion spring (5) sleeved on the drive shaft (46), an upper limit hole (6) or an upper limit groove provided on the drive gear (44), and a lower limit hole or a lower limit groove (7) provided on the assembly housing (41). One end of the return torsion spring (5) extends and is connected in the upper limit groove or upper limit hole (6), and the other end extends and is connected in the lower limit groove (7) or lower limit hole. The drive gear (44) and the assembly housing (41) are connected to form a spring groove (40) suitable for accommodating the return torsion spring (5).

9. The electric anti-theft lock according to claim 1, characterized in that: The detection switch (9) is installed between the assembly housing (41) and the lock plate (1). The detection switch (9) has a button part that engages with the bottom end of the lock hook (2). When the lock hook (2) is in the unlocked state, it presses against the button part with its bottom end.

10. The electric anti-theft lock according to claim 9, characterized in that: The bottom of the assembly housing (41) is provided with a mounting groove (48) for mounting the detection switch (9) and a lead wire groove (49) connecting the mounting groove (48) and the internal cavity (47), so that the detection line from the detection switch (9) passes through the lead wire groove (49) and enters the internal cavity (47) to connect with the control circuit board. The assembly housing (41) is detachably mounted on the locking plate (1) by a fixing structure, and the locking plate (1) limits and presses against the detection switch (9) located in the mounting groove (48).

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