Electronic padlock

Abstract

The utility model discloses an electronic padlock which comprises a waterproof shell, a lock body and a lock hook, the waterproof shell is provided with a first end and a second end which are opposite to each other, the first end is open, and the second end is provided with a first via hole and a limiting groove which are spaced from each other; the lock body is installed in the waterproof shell and seals the opening of the first end. The lock hook comprises a mounting section, a connecting section and a limiting section which are connected in sequence, the mounting section is opposite to the limiting section, the mounting section penetrates through the first via hole and is movably mounted on the lock body, a first sealing ring is arranged between the mounting section and the first via hole, the lock hook has a locking state and an unlocking state, and in the locking state, the connecting section is connected with the limiting section through the first sealing ring. In the unlocking state, the end of the limiting section is located in the limiting groove, and in the unlocking state, the end of the limiting section is located outside the limiting groove. According to the technical scheme, the waterproof performance can be improved.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, and in particular to an electronic padlock. Background Technology

[0002] Electronic padlocks are a new type of lock that combines electronic technology. They achieve secure locking and unlocking functions through smart chips, cryptographic algorithms, and wireless communication technology. They can be used in lockers, luggage, and other similar applications. However, electronic padlocks generally contain electronic structures such as batteries and circuit boards. Traditional electronic padlocks have poor waterproof performance and are prone to water ingress and short circuits when exposed to rain outdoors, leading to functional failure and low reliability. Utility Model Content

[0003] The main purpose of this invention is to propose an electronic padlock that improves waterproof performance.

[0004] To achieve the above objectives, the electronic padlock proposed in this utility model includes:

[0005] A waterproof housing has a first end and a second end, the first end being open, and the second end having a first through hole and a limiting groove spaced apart from each other;

[0006] A lock body, installed within the waterproof housing, and sealing the opening at the first end; and

[0007] The lock hook includes a mounting section, a connecting section, and a limiting section connected in sequence. The mounting section is opposite to the limiting section. The mounting section passes through the first through hole and is movably mounted on the lock body. A first sealing ring is provided between the mounting section and the first through hole. The lock hook has a locked state and an unlocked state. In the locked state, the end of the limiting section is located inside the limiting groove. In the unlocked state, the end of the limiting section is located outside the limiting groove.

[0008] Optionally, the mounting section is provided with a first annular groove, and the first sealing ring is installed in the first annular groove. In the locked state, the first sealing ring abuts against the inner wall of the first through hole, and in the unlocked state, the first sealing ring is located outside the first through hole.

[0009] Optionally, the mounting section has a sealing portion, the sealing portion being prismatic in shape, the first sealing ring being disposed on the sealing portion, and the shape of the first through hole being adapted to the shape of the sealing portion.

[0010] Optionally, the lock body includes a first housing, a second housing, a main control board, a battery, and a drive mechanism. The first housing and the second housing form a mounting cavity. The main control board, the battery, and the drive mechanism are all located in the mounting cavity. The first housing has a mounting through hole communicating with the mounting cavity. The mounting section is movably mounted in the mounting through hole and cooperates with the drive mechanism.

[0011] Optionally, the mounting section located in the mounting through hole has a slot, and the driving mechanism has a latch that can enter and exit the mounting through hole. In the locked state, the latch extends into the mounting through hole and into the slot to restrict the mounting section from moving out of the first through hole. In the unlocked state, the latch retracts out of the mounting through hole.

[0012] Optionally, the mounting section located at the mounting through hole is provided with an annular limiting part, the first housing is provided with a first through hole penetrating the inner wall of the mounting through hole, the waterproof housing is provided with a second through hole corresponding to the position of the first through hole, and the electronic padlock further includes a limiting pin, the limiting pin is fixed in the first through hole and the second through hole and extends into the mounting through hole, and in the unlocked state, the limiting pin abuts against the side of the annular limiting part facing the first through hole.

[0013] Optionally, the mounting section is provided with a second annular groove, and the annular limiting portion is formed between the second annular groove and the end face of the mounting section;

[0014] Optionally, the mounting section is provided with a limiting plane, the sidewall of the second annular groove of the limiting plane extends toward the direction of the first through hole, and in the locked state, the limiting pin is set corresponding to the limiting plane;

[0015] Optionally, the electronic padlock further includes a compression spring disposed within the mounting hole and abutting against the end of the mounting section.

[0016] Optionally, the driving mechanism includes a drive motor, a limiting slider, and a return spring. The limiting slider is slidably installed in the mounting cavity and has the latch. The return spring abuts against the side of the limiting slider away from the mounting through hole. The limiting slider is provided with a slot. The drive motor is located between the limiting slider and the first end and has an eccentric lever extending into the slot.

[0017] Optionally, the bottom wall of the limiting groove is provided with a second through hole, and the electronic padlock also includes a locking screw, which passes through the second through hole and is screwed to the lock body, and the locking screw and the second through hole are sealed together.

[0018] Optionally, the lock body has a sealing plate disposed in the opening at the first end, and a second sealing ring is provided between the sealing plate and the first end.

[0019] Optionally, the sealing plate is provided with a third through hole, and the electronic padlock further includes a fingerprint module, which is located in the third through hole.

[0020] This utility model's technical solution involves installing a waterproof outer shell around the lock body, sealing the opening at the first end of the waterproof outer shell, and sealing the gap between the mounting section of the lock hook and the first through hole with a first sealing ring. This effectively seals the lock body inside, improving the waterproof performance of the electronic padlock and reducing the risk of malfunction due to water ingress. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the electronic padlock of this utility model;

[0023] Figure 2 for Figure 1 A cross-sectional view of a Chinese electronic padlock;

[0024] Figure 3 for Figure 1 A schematic diagram of the structure when the center lock hook is switched to the unlocked state;

[0025] Figure 4 for Figure 3 A cross-sectional view of the electronic padlock, in which the eccentric lever is in the second position;

[0026] Figure 5 for Figure 3 A schematic diagram of the structure after the locking hook is rotated at a certain angle;

[0027] Figure 6 for Figure 4 Schematic diagram of the center locking hook;

[0028] Figure 7 for Figure 3 Schematic diagram of the central locking body;

[0029] Figure 8 for Figure 7 A schematic diagram of the structure after the central locking body is concealed within the second housing;

[0030] Figure 9 for Figure 7 A schematic diagram of the structure of the second shell.

[0031] Explanation of icon numbers:

[0032] 10. Waterproof outer shell; 11. First end; 12. Second end; 121. First through hole; 122. Limiting groove; 123. Second through hole; 124. Second through hole; 20. Lock body; 21. First housing; 211. Mounting through hole; 212. First through hole; 22. Second housing; 221. Sealing plate; 222. Third through hole; 23. Main control board; 24. Battery; 25. Drive mechanism; 251. Drive motor; 252. Eccentric lever; 253. Limiting slide 254. Block; 255. Slot; 256. Tongue; 257. Guide surface; 258. Reset spring; 26. Fingerprint module; 30. Lock hook; 31. Mounting section; 311. Sealing section; 312. First annular groove; 313. Slot; 314. Annular limiting part; 315. Second annular groove; 316. Limiting plane; 32. Connecting section; 33. Limiting section; 40. Limiting pin; 50. Locking screw; 60. Compression spring; 70. First sealing ring; 80. Second sealing ring.

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text is to include three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] This utility model proposes an electronic padlock.

[0038] In the embodiments of this utility model, such as Figures 1 to 9 As shown, the electronic padlock includes a waterproof housing 10, a lock body 20, and a lock hook 30. The waterproof housing 10 has a first end 11 and a second end 12 opposite to each other. The first end 11 is open, and the second end 12 is provided with a first through hole 121 and a limiting groove 122 spaced apart. The lock body 20 is installed inside the waterproof housing 10 and seals the openness of the first end 11. The lock hook 30 includes a mounting section 31, a connecting section 32, and a limiting section 33 connected in sequence. The mounting section 31 is opposite to the limiting section 33. The mounting section 31 passes through the first through hole 121 and is movably installed on the lock body 20. A first sealing ring 70 is provided between the mounting section 31 and the first through hole 121. The lock hook 30 has a locked state and an unlocked state. In the locked state, the end of the limiting section 33 is located inside the limiting groove 122. In the unlocked state, the end of the limiting section 33 is located outside the limiting groove 122.

[0039] Specifically, the lock hook 30 is roughly U-shaped. The lock body 20 contains a main control board 23, a battery 24, an unlocking module, and a drive mechanism 25. The battery 24, unlocking module, and drive mechanism 25 are all electrically connected to the main control board 23. The battery 24 powers the unlocking module, main control board 23, and drive mechanism 25. The unlocking module can be a fingerprint module 26, an NFC (Near Field Communication) module, or a Bluetooth module, etc. The lock hook 30 can move axially along the first through hole 121, moving between a locked state and an unlocked state. The drive mechanism 25 cooperates with the mounting section 31 to restrict the axial movement of the mounting section 31 along the first through hole 121, thus confining the lock hook 30 to the locked state. In the locked state, the end of the limiting section 33 is located within the limiting groove 122, restricting the rotation of the mounting section 31. When the drive mechanism 25 is separated from the mounting section 31 and the lock hook 30 moves axially along the first through hole 121 to the unlocked state, the mounting section 31 can rotate within the first through hole 121 so that the limiting section 33 can move away from the limiting groove 122. During installation, the lock body 20 can be inserted into the waterproof housing 10 from the opening at the first end 11. After installation, the lock body 20 seals the opening. The specific cooperation structure between the drive mechanism 25 and the mounting section 31 can vary, and can be found in existing technology; therefore, it will not be described in detail here.

[0040] The present invention provides a waterproof outer shell 10 outside the lock body 20, which seals the opening of the first end 11 of the waterproof outer shell 10. The first sealing ring 70 seals the gap between the mounting section 31 of the lock hook 30 and the first through hole 121. This effectively seals the lock body 20 inside, improves the waterproof performance of the electronic padlock, and reduces the risk of water ingress and malfunction.

[0041] In some embodiments, the mounting section 31 is provided with a first annular groove 312, and a first sealing ring 70 is installed in the first annular groove 312. In the locked state, the first sealing ring 70 abuts against the inner wall of the first through hole 121, and in the unlocked state, the first sealing ring 70 is located outside the first through hole 121. That is, in the locked state, the gap between the first sealing ring 70 and the first through hole 121 is reduced. When the locking hook 30 moves from the locked state to the unlocked state, the first sealing ring 70 moves with the mounting section 31 to the outside of the first through hole 121. This allows the first sealing ring 70 to be located at the opening of the first through hole 121, thus ensuring a seal in the locked state and reducing the frictional distance between the first sealing ring 70 and the inner wall of the first through hole 121 when the locking hook 30 moves, thereby reducing the wear of the first sealing ring 70, extending its service life, and ensuring good sealing performance. Under normal circumstances, the likelihood of opening an electronic padlock in rain or a leaky environment is extremely low. Therefore, achieving a seal when locked is sufficient for daily use. Of course, in other embodiments, the first sealing ring 70 can also be fixed within the first through hole 121.

[0042] In some embodiments, the lock body 20 includes a first housing 21, a second housing 22, a main control board 23, a battery 24, and a drive mechanism 25. The first housing 21 and the second housing 22 enclose a mounting cavity. The main control board 23, the battery 24, and the drive mechanism 25 are all disposed in the mounting cavity. The first housing 21 has a mounting through hole 211 communicating with the mounting cavity. The mounting section 31 is movably mounted in the mounting through hole 211 and cooperates with the drive mechanism 25. During assembly, the main control board 23, the battery 24, the unlocking module, and the drive mechanism 25 can be installed in the first housing 21 or the second housing 22 firstly, and then the first housing 21 and the second housing 22 can be assembled together to complete the assembly of the lock body 20. Then, the lock body 20 is inserted into the waterproof housing 10 through the opening at the first end 11, and the opening at the first end 11 is sealed with the lock body 20. Then, the mounting section 31 of the lock hook 30 is inserted into the first through hole 121 and the mounting through hole 211, so that the lock hook 30 cooperates with the drive mechanism 25. In this way, the main control board 23, battery 24, unlocking module, and drive mechanism 25 can be encapsulated by the first housing 21 and the second housing 22, which can further improve the waterproof performance of the electronic padlock and reduce the risk of malfunction due to water ingress. Of course, in other embodiments, the lock body 20 may only have the first housing 21, and the main control board 23, battery 24, and drive mechanism 25 may be housed in the first housing 21.

[0043] The lock body 20 also includes a charging structure, which is electrically connected to the main control board 23 and is used to connect to an external power source to charge the battery 24. The charging structure can be a charging interface (such as a Type-C interface), a wireless charging coil, or an electrical connector with two charging probes.

[0044] In some embodiments, the mounting section 31 located at the mounting through hole 211 is provided with a slot 313, and the drive mechanism 25 has a latch 255 that can enter and exit the mounting through hole 211. In the locked state, the latch 255 extends into the mounting through hole 211 and into the slot 313 to restrict the mounting section 31 from moving out of the first through hole 121. In the unlocked state, the latch 255 retracts out of the mounting through hole 211. Specifically, the drive mechanism includes a drive motor 251, a limiting slider 253, and a return spring 257. The limiting slider 253 is slidably mounted in the mounting cavity and has a latch 255. The return spring 257 abuts against the side of the limiting slider 253 away from the mounting through hole 211. The limiting slider 253 is provided with a groove 254. The drive motor 251 is located between the limiting slider 253 and the first end 11 and has an eccentric lever 252 extending into the groove 254. The first housing 21 is provided with a through hole that penetrates the inner wall of the mounting through hole 211 and communicates with the mounting cavity. The latch 255 is located at the through hole so that it can enter and exit the mounting through hole 211.

[0045] The eccentric lever 252 has a first position close to the mounting hole 211 and a second position away from the mounting hole 211. When the eccentric lever 252 is in the first position and the locking hook 30 is in the locked state, the limiting slider 253 moves under the action of the return spring 257 until the latch 255 extends into the mounting hole 211 and the slot 313, thereby restricting the locking hook 30 to the locked state. When the drive motor 251 drives the eccentric lever 252 to move from the first position to the second position, the eccentric lever 252 abuts against the side wall of the slot 254 away from the mounting hole 211, thereby causing the limiting slider 253 to overcome the elastic force of the return spring 257 and exit the mounting hole 211 and the slot 313, at which point the locking hook 30 can be switched to the unlocked state. When the drive motor 251 drives the eccentric lever 252 to move from the second position to the first position, the eccentric lever 252 moves away from the side wall of the mounting hole 211 and away from the slot 254. The limiting slider 253 moves towards the mounting hole 211 under the action of the return spring 257 until the latch 255 enters the mounting hole 211. This structure is simple and can reduce the width of the lock body 20 (i.e., the dimension perpendicular to the mounting section 31), which is beneficial for the miniaturization design of electronic padlocks.

[0046] Of course, in other embodiments, a rack and pinion mechanism or other mechanism can be used to drive the latch 255 in and out of the mounting through hole 211. Alternatively, a protrusion can be provided on the portion of the mounting section 31 located in the mounting through hole 211, and in the locked state, the latch 255 abuts against the side of the protrusion facing the first through hole 121.

[0047] Optionally, the latch 255 is provided with a guide surface 256 on the side facing the first through hole 121. The guide surface 256 gradually extends away from the first through hole 121 in the direction close to the end face of the latch 255. That is, the guide surface 256 can be a sloping plane or a convex arc surface. In this way, when the eccentric lever 252 is in the first position, even if the locking hook 30 is in the unlocked state, the latch 255 can be moved away from the mounting through hole 211 by pressing down the locking hook 30 and using the end of the mounting section 31 to abut against the guide surface 256 until the locking groove 313 moves to the locking groove 313. Under the action of the return spring 257, the latch 255 is locked into the locking groove 313. Compared to a method where the eccentric lever 252 remains in the second position when unlocked and only moves to the first position when the locking hook 30 moves to the locked position, this method allows the drive motor 251 to drive the eccentric lever 252 from the second position to the first position after unlocking, causing the latch 255 to automatically reset and extend into the mounting hole 211. This method is easier to implement, reduces user operation, and is more user-friendly. Optionally, the end of the mounting section 31 is chamfered. Of course, in other embodiments, only the end face of the mounting section 31 may be provided with an inclined or arc-shaped guide surface.

[0048] Optionally, the electronic padlock also includes a compression spring 60, which is disposed within the mounting hole 211 and abuts against the end of the mounting section 31. That is, after the latch 255 exits the slot 313, the lock hook 30 can automatically move to the unlocked state under the action of the compression spring 60, thus avoiding the need for the user to manually switch the lock hook 30 to the unlocked state, making it convenient for the user.

[0049] In some embodiments, the mounting segment 31 located in the mounting through hole 211 is provided with an annular limiting portion 314. The first housing 21 is provided with a first through hole 212 penetrating the inner wall of the mounting through hole 211. The waterproof housing 10 is provided with a second through hole 124 corresponding to the position of the first through hole 212. The electronic padlock also includes a limiting pin 40, which is fixed to the first through hole 212 and the second through hole 124 and extends into the mounting through hole 211. In the unlocked state, the limiting pin 40 abuts against the side of the annular limiting portion 314 facing the first through hole 121. That is, the limiting pin 40 can be installed after the mounting segment 31 is inserted into the mounting through hole 211, and the limiting pin 40 can prevent the mounting segment 31 from coming out of the mounting through hole 211. This structure is simple and easy to install. Since the limiting pin 40 is fixed to the second through hole 124 and does not need to move, it is easy to perform sealing treatment (e.g., the limiting pin 40 is press-fitted with the second through hole 124 or the outer end of the limiting pin 40 is welded, etc.), and the sealing performance of the waterproof housing 10 will not be reduced.

[0050] Of course, in other embodiments, the first housing 21 is provided with a mounting hole that penetrates the wall of the mounting through hole 211. The electronic lock includes a pin and a spring. The pin is slidably mounted in the mounting hole and has a limiting head that extends into the mounting through hole 211. The limiting head has a bevel on the side facing the first through hole 121 (or a bevel is provided at the end of the mounting section 31). The spring abuts against the side of the pin away from the mounting through hole 211. During installation, when the mounting section 31 is inserted into the first through hole 121 and the mounting through hole 211, the end of the mounting section 31 abuts against the bevel, causing the pin to retract into the mounting hole against the spring force. The annular limiting part 314 passes over the limiting head, and under the action of the spring, the limiting head extends to the side of the annular limiting part 314 facing the first through hole 121. This avoids openings in the waterproof housing 10.

[0051] In some embodiments, the mounting section 31 is provided with a second annular groove 315, and an annular limiting portion 314 is formed between the second annular groove 315 and the end face of the mounting section 31; that is, the outer diameter of the annular limiting portion 314 is consistent with the outer diameter of the portion of the mounting section 31 located in the mounting through hole 211, so the structure is simple and easy to form.

[0052] In some embodiments, the mounting section 31 is provided with a limiting plane 316, the sidewall of the second annular groove 315 of the limiting plane 316 extends toward the direction of the first through hole 121, and in the locked state, the limiting pin 40 is provided corresponding to the limiting plane 316; specifically, the limiting plane 316 is approximately parallel to the axis of the mounting section 31, so that the mounting section 31 can be prevented from rotating in the mounting through hole 211 by the cooperation of the limiting plane 316 and the limiting pin 40, and the locking hook 30 is stable in the locked state.

[0053] In some embodiments, the bottom wall of the limiting groove 122 is provided with a second through hole 123. The electronic padlock also includes a locking screw 50, which passes through the second through hole 123 and is screwed to the lock body 20. The locking screw 50 and the second through hole 123 are sealed together. That is, the space in the limiting groove 122 can be used for the installation of the locking screw 50, which can not only ensure a stable connection between the lock body 20 and the waterproof housing 10, but also avoid opening holes on the outer surface of the waterproof housing 10.

[0054] In some embodiments, the lock body 20 has a sealing plate 221 disposed within the opening of the first end 11, and a second sealing ring 80 is provided between the sealing plate 221 and the first end 11. This not only provides a better seal for the opening of the first end 11, but also simplifies the structure and reduces production costs. Of course, in other embodiments, sealant can also be used to seal between the sealing plate 221 and the first end 11.

[0055] In some embodiments, the sealing plate 221 is provided with a third through hole 222, and the lock body 20 also includes a fingerprint module 26, which is disposed in the third through hole 222. Pre-installing the fingerprint module 26 in the sealing plate 221 facilitates waterproofing and avoids opening holes on the outer surface of the waterproof housing 10, thus improving the waterproofing effect of the waterproof housing 10. The fingerprint module 26 is electrically connected to the main control board 23.

[0056] In some embodiments, the mounting section 31 has a sealing portion, which is prismatic in shape. A first sealing ring 70 is disposed on the sealing portion, and the shape of the first through hole 121 is adapted to the shape of the sealing portion, that is, the sealing portion is provided with a first annular groove 312. By setting the sealing portion as a non-rotational structure, the mounting section 31 can be restricted from rotating within the first through hole 121 by the cooperation between the sealing section 311 and the first through hole 121 in the locked state.

[0057] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An electronic padlock, characterized in that, include: A waterproof housing has a first end and a second end, the first end being open, and the second end having a first through hole and a limiting groove spaced apart from each other; A lock body, installed within the waterproof housing, and sealing the opening at the first end; and The lock hook includes a mounting section, a connecting section, and a limiting section connected in sequence. The mounting section is opposite to the limiting section. The mounting section passes through the first through hole and is movably mounted on the lock body. A first sealing ring is provided between the mounting section and the first through hole. The lock hook has a locked state and an unlocked state. In the locked state, the end of the limiting section is located inside the limiting groove. In the unlocked state, the end of the limiting section is located outside the limiting groove.

2. The electronic padlock as described in claim 1, characterized in that, The mounting section is provided with a first annular groove, and the first sealing ring is installed in the first annular groove. In the locked state, the first sealing ring abuts against the inner wall of the first through hole. In the unlocked state, the first sealing ring is located outside the first through hole. And / or, the mounting section has a sealing portion, the sealing portion being prismatic in shape, the first sealing ring being disposed on the sealing portion, and the shape of the first through hole being adapted to the shape of the sealing portion.

3. The electronic padlock as described in claim 1, characterized in that, The lock body includes a first housing, a second housing, a main control board, a battery, and a drive mechanism. The first housing and the second housing form a mounting cavity. The main control board, the battery, and the drive mechanism are all located in the mounting cavity. The first housing has a mounting through hole that communicates with the mounting cavity. The mounting section is movably mounted in the mounting through hole and cooperates with the drive mechanism.

4. The electronic padlock as described in claim 3, characterized in that, The mounting section located in the mounting through hole has a slot, and the driving mechanism has a latch that can enter and exit the mounting through hole. In the locked state, the latch extends into the mounting through hole and into the slot to restrict the mounting section from moving out of the first through hole. In the unlocked state, the latch retracts out of the mounting through hole.

5. The electronic padlock as described in claim 3, characterized in that, The mounting section located at the mounting through hole is provided with an annular limiting part. The first housing is provided with a first through hole penetrating the inner wall of the mounting through hole. The waterproof housing is provided with a second through hole corresponding to the position of the first through hole. The electronic padlock also includes a limiting pin. The limiting pin is fixed in the first through hole and the second through hole and extends into the mounting through hole. In the unlocked state, the limiting pin abuts against the side of the annular limiting part facing the first through hole.

6. The electronic padlock as described in claim 5, characterized in that, The mounting section is provided with a second annular groove, and the second annular groove and the end face of the mounting section form the annular limiting part; The installation section is provided with a limiting plane, and the side wall of the second annular groove of the limiting plane extends toward the direction of the first through hole. In the locked state, the limiting pin is set corresponding to the limiting plane. The electronic padlock also includes a compression spring, which is disposed in the mounting hole and abuts against the end of the mounting section.

7. The electronic padlock as described in claim 4, characterized in that, The driving mechanism includes a drive motor, a limiting slider, and a return spring. The limiting slider is slidably installed in the mounting cavity and has the latch. The return spring abuts against the side of the limiting slider away from the mounting through hole. The limiting slider is provided with a groove. The drive motor is located between the limiting slider and the first end and has an eccentric lever extending into the groove.

8. The electronic padlock as described in claim 1, characterized in that, The bottom wall of the limiting groove is provided with a second through hole. The electronic padlock also includes a locking screw, which passes through the second through hole and is screwed to the lock body. The locking screw and the second through hole are sealed together.

9. The electronic padlock as described in claim 8, characterized in that, The lock body has a sealing plate, which is located in the opening at the first end, and a second sealing ring is provided between the sealing plate and the first end.

10. The electronic padlock as described in claim 9, characterized in that, The sealing plate is provided with a third through hole, and the electronic padlock also includes a fingerprint module, which is located in the third through hole.

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