An electronic padlock

Abstract

This case involves an electronic padlock. The main improved technical solution is that a position detection switch is also installed in the lock housing. The upper end of the motor is connected to a drive member that rotates with the motor. The drive member includes four teeth arranged on the outer periphery of the drive member. The teeth are equidistantly arranged around the circumference, and the angle formed by each two adjacent teeth extending to the axis of the drive member is 90 degrees. When the locking mechanism is locked, one of the teeth abuts the non-detection area on the left side of the position detection switch. When the sensing circuit board senses the unlocking command, the motor rotates to drive the drive member. As the motor rotates, the locking mechanism is driven by the tooth until the next tooth adjacent to the tooth in the rotation direction passes the position detection switch, completing the unlocking action. At this time, the position detection switch transmits a signal to the control circuit board to control the motor to cut off power. In this way, excessive operation of the motor is avoided, preventing damage to the motor and locking mechanism due to excessive rotation.

Description

Technical Field

[0001] The present invention relates to the field of intelligent locks, and in particular to an electronic padlock. Background Art

[0002] Passive electronic padlocks are widely used as security devices in various situations, such as warehouses, cabinets, and travel luggage. Traditional mechanical lock cylinders and early electronic lock cylinders relied on physical keys or simple electronic components for unlocking. With the development of technology, smart locks and passive padlocks with electronic control systems have gradually become mainstream in the market, significantly improving their security, convenience, and reliability.

[0003] However, existing passive electronic padlocks still have some design deficiencies. Traditional products typically use a limiter mechanism to restrict the motor's rotation range, ensuring the locking mechanism accurately switches from locked to unlocked. This not only results in inconsistent unlocking strokes, but also, over time, wear and tear of mechanical components can lead to limiter failure, compromising the accuracy of unlocking and closing. This can cause users to experience difficulty opening or closing the lock smoothly.

[0004] Due to the lack of precise position detection, existing designs often require the motor to rotate several times to ensure successful unlocking. Furthermore, the motor typically does not automatically shut down after unlocking is complete. While this improves the success rate of unlocking, it also increases unnecessary power consumption. Frequent use significantly shortens battery life, increasing maintenance costs and inconvenience for users.

[0005] When the motor must continue to operate until it reaches a physical limit and lacks a power-off mechanism, prolonged over-operation can easily damage the motor and locking mechanism, increasing failure rates and potentially even damaging the motor due to overheating. This not only increases repair costs but also poses a safety hazard to users. Because the lock relies on mechanical limiters, these components can wear out or fail over time, compromising the stability and reliability of the entire system. This forces users to frequently replace or repair the lock, increasing costs.

[0006] Therefore, how to overcome the above-mentioned defects and provide a non-physical limit electronic padlock that can accurately control the unlocking stroke and can cut off the power of the motor in time has become an important issue that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0007] The present invention overcomes the deficiencies of the above-mentioned technology and provides an electronic padlock.

[0008] To achieve the above object, the present invention adopts the following technical solutions:

[0009] An electronic padlock includes a lock housing, wherein a lock beam is installed in the lock housing, a locking mechanism connected to the lock beam and used to drive the lock beam to move relative to the lock housing to unlock the lock, a motor and a control circuit board for driving the locking mechanism to operate, a sensing circuit board is also installed at the bottom of the lock housing, the sensing circuit board is electrically connected to the control circuit board and the motor, a position detection switch is also installed in the lock housing, the upper end of the motor is connected to a driving member that rotates with the motor, the driving member includes four shift teeth arranged on the outer periphery of the driving member, the shift teeth are equidistantly arranged in the circumferential direction, and the angle formed by each two adjacent shift teeth extending to the axis of the driving member is 90 degrees; in the locked state of the locking mechanism, one of the shift teeth abuts against a non-detection area on the left side of the position detection switch, when the sensing circuit board senses an unlocking command, the motor rotates to drive the driving member to rotate; as the motor rotates, the locking mechanism is driven by the shift tooth until the next shift tooth adjacent to the shift tooth in the rotation direction passes the position detection switch, completing the unlocking action, at which time the position detection switch transmits a signal to cause the control circuit board to control the motor to be powered off.

[0010] Furthermore, the position detection switch is a touch switch or a proximity switch.

[0011] Furthermore, a fixing seat is fixedly provided in the lock housing, and the motor, control circuit board, and position detection switch are all connected and fixed to the fixing seat, and a waterproof rubber pad is sealed between the fixing seat and the lock housing.

[0012] Furthermore, the motor includes a rotatable reducer, and the driving member is connected to the upper end of the reducer and can rotate along with the reducer.

[0013] Furthermore, a recessed portion cooperating with the locking mechanism is symmetrically provided on the inner side wall of the lock beam, and the locking mechanism includes a toggle member that abuts against the driving member and can rotate following the driving member, a rotating column fixedly connected to the upper end of the toggle member and can rotate following the toggle member, and a ball symmetrically provided on the left and right sides of the rotating column that can be partially accommodated in the recessed portion. The rotating column includes a protruding portion for pushing the ball into the recessed portion when it rotates, and the protruding portions are symmetrically provided front and back. The rotating column also includes a notch portion for accommodating the ball after the ball escapes from the recessed portion.

[0014] Furthermore, a cross limiting protrusion is provided at the upper end of the rotating column, and a cross limiting groove is formed between the cross limiting protrusions. The cross limiting groove includes four notches arranged at equal intervals, and the angle formed by two adjacent notches extending to the axis of the rotating column is 90 degrees. A torsion spring is provided on the outer periphery of the cross limiting protrusion, and one end of the torsion spring is limited in one of the notches and the other end is fixedly connected to the lock shell. The torsion spring is used to drive the rotating column to rotate and reset and push the ball into the recessed portion to complete the locking action after the ball disengages from the recessed portion and when the lock beam is pressed down again; the locking mechanism also includes a limiting mechanism arranged at the lower end of the rotating column for limiting the rotation angle of the rotating column.

[0015] Furthermore, the limiting mechanism includes a limiting plate fixedly arranged in the lock housing, the limiting plate is provided with a special-shaped groove, the rotating column includes a convex strip rotatably arranged in the special-shaped groove, and the special-shaped groove includes two symmetrically arranged 90-degree fan-shaped grooves.

[0016] Furthermore, a receiving cavity for accommodating the ball and allowing it to move is provided in the lock shell, and a limiting surface is provided on the outer wall of the receiving cavity for limiting the ball from completely escaping from the receiving cavity. The lock shell also has a first channel and a second channel for accommodating the two ends of the lock beam and allowing it to move.

[0017] Furthermore, a first drain hole communicating with the first channel is provided on the side wall of the lock housing, and a second drain hole communicating with the second channel is also provided on the side wall of the lock housing.

[0018] Furthermore, the lock case includes a base plate, which includes an annular connecting portion and a mounting groove formed in the annular connecting portion. A pillar is provided in the middle of the mounting groove. A through hole for inserting the pillar is provided on the sensing circuit board. The sensing circuit board is embedded in the mounting groove. A waterproof gasket is provided on the outer wall surface of the annular connecting portion, and an annular groove for embedding the waterproof gasket is correspondingly provided at the lower end of the lock case.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. This design utilizes a position detection switch that works in conjunction with the driver's shifting teeth. In the locked state, one shifting tooth is located in the non-detection area to the left of the position detection switch. When the sensor circuit board receives the unlock command, the motor starts and rotates the driver. Because the four shifting teeth are evenly spaced and the angle between two adjacent shifting teeth is 90 degrees, each rotation precisely covers the required unlocking angle, effectively ensuring the consistency and accuracy of each unlocking action and eliminating the uncertainty caused by mechanical wear or limit failure in existing technologies. Users can rely on the same unlocking experience every time, improving the reliability of this electronic padlock.

[0021] 2. When the next gear adjacent to the current gear in the direction of rotation passes the position detection switch, the position detection switch immediately transmits a signal to the control circuit board, which quickly cuts off the power supply to the motor, avoiding excessive operation of the motor, preventing damage to the motor and locking mechanism due to excessive rotation, and preventing the motor from overheating and damage due to long-term operation, thereby protecting the safety of the system hardware.

[0022] 3. This electronic padlock structure effectively reduces friction and wear between internal components, improving system durability and reducing maintenance costs and failure rates. Because the motor only needs to rotate 0.5 degrees to complete a complete unlocking action, the entire process is extremely fast, allowing users to complete the operation in a short time. This fast response time enhances the user experience, especially in emergency situations, providing faster security.

[0023] 4. This design features four equally spaced shift teeth, each extending 90 degrees from the axis of the driver. When unlocking is complete, the locking mechanism automatically resets, and the motor stops at the position where the next shift tooth is ready for engagement. This means that after the motor completes the unlocking action and powers off, the next shift tooth continues to engage the non-detection area to the left of the position detection switch, facilitating the next unlocking operation and ensuring stability. This design simplifies the continuous unlocking process, reduces user waiting time, and further enhances convenience and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an exploded view of the electronic padlock in this case.

[0025] Figure 2 This is a structural diagram of the locking mechanism, motor, lock beam, drive component and position detection switch in this case under the coordinated state.

[0026] Figure 3 This is a structural diagram of the limiting mechanism, rotating column, toggle member, and torsion spring in this case.

[0027] Figure 4 It is a side view of the electronic padlock in this case.

[0028] Figure 5 This case Figure 4 Section view in the AA direction.

[0029] Figure 6 It is a three-dimensional diagram of the electronic padlock in this case. DETAILED DESCRIPTION

[0030] The following examples further illustrate the features of the present invention and other related features to facilitate understanding by those skilled in the art:

[0031] like Figures 1 to 6As shown, this invention provides an electronic padlock comprising a lock housing 100. The lock housing 100 protects internal components and provides a mounting platform, creating a sturdy and enclosed environment that shields the internal components from external influences and enhances the overall stability and security of the system. In a specific implementation, the lock housing 100 is made of a metal material, preferably a copper or zinc alloy. Mounted within the lock housing 100 are a locking beam 1, a locking mechanism 2 connected to the lock beam 1 for driving the lock beam 1 relative to the lock housing to unlock the lock, a motor 3 for actuating the locking mechanism 2, and a control circuit board 4. The lock beam 1 is connected to the lock housing 100 via the locking mechanism 2, enabling relative movement to unlock or lock the lock. A sensing circuit board 5 is also mounted at the bottom of the lock housing 100 and is electrically connected to the control circuit board 4 and the motor 3. In response to commands from the sensing circuit board 5, the motor 3 rotates to actuate the locking mechanism 2, thereby unlocking or locking the lock. In a specific implementation, the sensing circuit board 5 receives external unlocking commands and sends control signals to the motor 3. It also monitors the status of the position detection switch 6 to control power-off of the motor 3. The induction circuit board 5 realizes the intelligent control of the electronic padlock in this case and improves the user experience. In specific implementation, the induction circuit board 5 supports the mobile phone NFC near-field communication technology, and provides reverse power through the mobile phone NFC, without the need for a built-in power supply, which increases the flexibility, convenience and service life of use, eliminates the design of the battery compartment and related circuits, makes the padlock structure more compact and lightweight, improves the product's aesthetics and portability, and is energy-saving and environmentally friendly. A position detection switch 6 is also installed in the lock housing 100. The upper end of the motor 3 is connected to a driving member 7 that rotates with the motor 3. The driving member 7 includes a shift tooth 71 arranged on the outer periphery of the driving member 7. There are four shift teeth 71 equidistantly arranged circumferentially, and the angle formed by each two adjacent shift teeth 71 extending to the axis of the driving member 7 is 90 degrees; in the locked state of the locking mechanism 2, one of the shift teeth 71 abuts against the non-detection area on the left side of the position detection switch 6. When the sensing circuit board 5 senses the unlocking instruction, the motor 3 rotates to drive the driving member 7 to rotate; as the motor 3 rotates, the locking mechanism 2 is driven to operate through the shift tooth 71 until the next shift tooth 71 adjacent to the shift tooth 71 in the rotation direction passes the position detection switch 6, and the unlocking action is completed. At this time, the position detection switch 6 transmits a signal to enable the control circuit board 4 to control the motor to cut off power. In this embodiment, a position detection switch 6 is configured to cooperate with a shifting tooth 71 of a driver 7. When the motor drives the driver 7 to switch the locking mechanism 2 from the locked state to the unlocked state, the shifting tooth 71 triggers the position detection switch 6. The sensing circuit board 5 receives the signal and transmits it to the control circuit board 4, which then controls the motor 3 to power down. This structure and control method design provides accurate position feedback for the electronic padlock in this embodiment, avoids excessive operation of the motor 3, prevents damage to the motor 3 and locking mechanism 2 due to excessive motor rotation, prevents overheating and damage to the motor 3 due to prolonged operation, and protects the motor 3 and other key components from damage.Compared with the existing technology of setting a limit mechanism to jam the motor 3 to control the rotation range of the locking part, the unlocking stroke of this case is fixed, the rotation angle is fixed at 90 degrees, and the advantage of timely power off ensures the accuracy of unlocking and locking, prevents the motor 3 from continuing to rotate and touch the position detection switch 6 after unlocking, and prevents the locking mechanism 2 and motor 3 from being damaged by such operation for a long time, resulting in burning of the motor 3. The 90-degree stroke facilitates unlocking, has a fast response, and a reasonable structural design.

[0032] It should be noted that the teeth of this case are equidistantly arranged at four positions around the circumference, and the angle formed by the extension of two adjacent teeth to the axis of the driver is 90 degrees, which means that the unlocking rotation angle of this electronic padlock is 90 degrees. When each tooth 71 passes through the position detection switch 6, the motor 3 is immediately powered off, ensuring the consistency and accuracy of each unlocking stroke. This design simplifies the control logic and enhances the reliability and stability of the system.

[0033] Choosing a 90-degree unlocking angle has specific advantages and considerations compared to other rotation angles such as 45, 60, 120, or 180 degrees.

[0034] Compared to 45 and 60 degrees, the 90-degree rotation angle provides sufficient rotation range to ensure that the locking mechanism can be fully unlocked while maintaining a relatively compact design. For electronic padlocks, the 90-degree rotation is neither too long nor too small, which complicates the mechanical structure.

[0035] In contrast, while a 45- or 60-degree unlocking angle can reduce rotation time, it may not be sufficient to ensure full release of the locking mechanism, especially in applications requiring a larger range of motion. Furthermore, a smaller angle may increase motor torque requirements, thus increasing design complexity. Smaller angles require higher manufacturing and assembly precision to ensure each rotation is precisely aligned. This not only increases production and maintenance costs but may also affect long-term reliability.

[0036] Compared to 120 and 180 degrees, a larger rotation angle means more energy consumption and wear on the internal mechanical transmission, especially with frequent use. Furthermore, a larger rotation angle may place greater stress on the motor 3 and locking mechanism 2, increasing the risk of wear and failure. Furthermore, a longer rotation time may increase user waiting time, reducing the user experience and potentially preventing a quick response in an emergency.

[0037] In specific implementation, the position detection switch 6 is a touch switch or a proximity switch, and the user can choose to install it according to needs.

[0038] like Figure 1 、 Figure 4 、 Figure 5 As shown, a fixing base 200 is also fixedly provided in the lock housing 100, and the motor 3, control circuit board 4, and position detection switch 6 are all connected and fixed to the fixing base 200. The setting of the fixing base 200 further provides a stable installation limit platform to ensure that the above-mentioned components will not be displaced or loosened during operation, thereby enhancing the overall stability and reliability and reducing the risk of failure due to vibration or impact. In specific implementation, a limit structure for fixing the power supply 3, control circuit board 4, and position detection switch 6 is provided on the fixing base 200, and is connected and fixed by screws and other means to further improve the stability of each component. A waterproof rubber pad is sealed between the fixing base 200 and the lock housing 100. The waterproof rubber pad can effectively prevent the intrusion of water vapor, protect the internal circuit and mechanical components from corrosion and short circuit risks, and improve the service life of the electronic padlock in this case.

[0039] Further, refer to Figure 1 、 Figure 2 As shown, the motor 3 in this case includes a rotatable reducer 31, and the driving member 7 is connected to the upper end of the reducer 31 and can rotate with the reducer 31. By providing the reducer 31, the speed of the output shaft of the motor 3 can be reduced, and the torque can be increased at the same time, thereby converting the high-speed rotation of the motor 3 into a low-speed, high-torque motion suitable for driving the locking mechanism 2. This increases the torque required to drive the locking mechanism 2, ensures sufficient power to complete the unlocking and locking actions, reduces the operating speed of the motor 3, reduces the wear of the mechanical components, and extends the service life of the motor. At the same time, the low-speed rotation makes the system more sensitive to the response of the position detection switch 6, and improves the accuracy of unlocking and locking.

[0040] like Figure 1 、 Figure 2 、 Figure 4 、 Figure 5As shown, specifically, recessed portions 11 are symmetrically disposed on the inner sidewall of the lock beam 1 to cooperate with the locking mechanism 2. In a specific implementation, the lock beam 1 has a common U-shaped structure, and the recessed portions 11 are symmetrically disposed on the inner sidewalls at both ends of the U-shaped lock beam. The locking mechanism 2 includes a toggle member 21 that abuts against the driver 7 and can rotate with the driver 7, a rotating column 22 fixedly connected to the upper end of the toggle member 21 and can rotate with the toggle member 21, and a sphere 23 symmetrically disposed on the left and right sides of the rotating column 22, which can be partially accommodated in the recessed portion 11. The toggle member 21 ensures the synchronous movement of the locking mechanism 2 and the driver 7, improving the coordination of the system. In a specific implementation, the recessed portion 11 matches the shape of the sphere 23. The rotating post 22 includes a protrusion 221 that pushes the ball 23 into the recess 11 during rotation. The protrusions 221 are symmetrically arranged front to back. The rotating post 22 also includes a notch 222 that accommodates the ball 23 after it escapes from the recess 11. The design of the protrusion 221 and notch 222 ensures accurate movement of the ball 23, enabling reliable locking and unlocking, reducing the number of additional mechanical components, design complexity, and failure rate. The combination of the recess 11 and the ball 23 ensures the stability of the lock beam 1 in the locked state, preventing accidental unlocking. When the electronic padlock is in the locked state, the protrusions 221 of the rotating column 22 press against the two side balls 23 so that the two side balls 23 are respectively accommodated in the corresponding recessed portions 11, thereby locking the lock beam 1; when the motor 3 rotates, the shifting teeth 71 of the driving member 7 drive the shifting member 21 to rotate, thereby driving the rotating column 22 to rotate until the balls 23 escape from the recessed portions 11 and are respectively engaged in the notches 222 of the rotating column 22, and the lock beam 1 pops up to complete the unlocking.

[0041] Further, if Figure 1-Figure 5As shown, a cross limiting protrusion 223 is provided at the upper end of the rotating column 22, and a cross limiting groove 224 is formed between the cross limiting protrusions 223. The cross limiting groove 224 includes four notches 2241 arranged at equal intervals, and the angle formed by two adjacent notches 2241 extending to the axis of the rotating column 22 is 90 degrees. A torsion spring 8 is provided on the outer periphery of the cross limiting protrusion 223, and one end of the torsion spring 8 is limited in one of the notches 2241 and the other end is fixedly connected to the lock shell 100. The torsion spring 8 is used to drive the rotating column 22 to rotate and reset and push the ball 23 into the recess 11 after the ball 23 disengages from the recess 11 and when the lock beam 1 is pressed down again, thereby completing the locking action. That is, after the user unlocks the electronic padlock and wants to relock it, they simply press the lock beam 1 downward again. At this point, the torsion force of the torsion spring 8 automatically resets the locking mechanism 2. Specifically, the rotating column 22 resets and rotates under the torsion force of the torsion spring 8. The protrusion 221 of the rotating column 22 presses against the two side balls 23, causing them to move outward. As the lock beam 1 continues to press downward, the two side balls 23 are re-accommodated in their corresponding recesses 11, thereby locking the lock beam 1 again. The electronic padlock now reaches the locked state. The cross-shaped retaining groove 224 facilitates the installation of the torsion spring 8 and provides a stable preload for the torsion spring 8. In other words, because different torsion springs 8 cannot guarantee the same initial preload, this may affect the rotation angle of the rotating column 22, thereby affecting the unlocking function and, in the long term, the unlocking accuracy. However, by fitting one end of the torsion spring 8 into one of the slots 2241, it can be effectively ensured that the preload forces of all torsion springs 8 of the same model are consistent when used. Even if they are inconsistent, they can be adaptively adjusted according to the installation in different slots 2241. The structure of the cross-limiting protrusion 223 and the cross-limiting slot 224 ensures that the rotation accuracy of the rotating column 22 is not affected by the difference in the preload forces of the torsion spring 8, effectively ensuring the consistency and stability of the system, avoiding the tedious debugging and installation process during the installation of the torsion spring 8, and allowing the torsion spring 8 to maintain high-precision operation for a long time. The locking mechanism 2 also includes a limiting mechanism 24 provided at the lower end of the rotating column 22 for limiting the rotation angle of the rotating column 22. By providing a limiting mechanism, mechanical wear caused by excessive rotation of the rotating column 22 is avoided, thereby extending the service life of the system. Ensuring that the range of motion of the rotating column 22 is within a controllable range and the unlocking angle is 90 degrees improves the stability and reliability of the system.

[0042] Continue to refer to Figure 1-Figure 5As shown, the limiting mechanism 24 includes a limiting plate 241 fixedly disposed within the lock housing 100. The limiting plate 241 is provided with a special-shaped groove 2411. The rotating column 22 includes a protrusion 225 that is rotatably disposed within the special-shaped groove 2411. The special-shaped groove 2411 includes two symmetrically arranged 90-degree fan-shaped grooves 24111. The above-mentioned limiting structure effectively prevents the torsion force of the torsion spring 8 from driving the rotating column 22 to rotate infinitely. The torsion spring 8 is always provided with a preload force to facilitate the automatic reset of the rotating column 22, and the rotation angle is always maintained within a 90-degree range. This effectively protects the corresponding mechanical components, prevents wear of the corresponding components of the locking mechanism 2 and damage to the motor 3 caused by excessive rotation of the rotating column 22, and extends the service life of the system.

[0043] Further, if Figure 1 、 Figure 4-Figure 6 As shown, a housing 101 for accommodating the ball 23 and allowing it to move is provided in the lock housing 100, and a limiting surface is provided on the outer wall of the housing 101 for limiting the ball 23 from completely escaping from the housing 101. In specific implementation, the housing 101 is opened to correspond to the balls 23 on both sides. The housing 101 provides a stable space for the balls 23 to move, ensuring the smooth movement of the balls 23 during the locking and unlocking process, and effectively preventing the balls 23 from interfering with other components or wearing out other components. The setting of the limiting surface ensures that the ball 23 will not escape from the housing 101, thereby ensuring reliability. The lock housing 100 also provides a first channel 102 and a second channel 103 for accommodating the two ends of the lock beam 1 and allowing it to move.

[0044] like Figure 1 、 Figure 4-Figure 6 As shown, a first drain hole 104 is provided on the side wall of the lock housing 100, communicating with the first channel 102. A second drain hole 105 is also provided on the side wall of the lock housing 100, communicating with the second channel 103. Because electronic padlocks are generally used outdoors, they require excellent waterproof performance. In the above embodiment, a waterproof rubber gasket is sealed between the fixing base 200 and the lock housing 100. The provision of the first drain hole 104 and the second drain hole 105 further enhances the waterproof performance of the electronic padlock. Even in the event of an accident, if liquid flows into the first channel 102 or the second channel 103, it can be discharged from the lock housing through the first drain hole 104 and the second drain hole 105, respectively, preventing liquid from accumulating inside. This provides excellent waterproofing, effectively protecting the internal mechanical components and electronic components from the effects of a humid environment, reducing the risk of short circuits or corrosion caused by liquid intrusion, and avoiding the resulting inability to unlock the lock. This improves the stability and safety of the electronic padlock and extends its service life.

[0045] like Figure 1 、 Figure 4 、 Figure 5As shown, the lock case 100 includes a base plate 106, which includes an annular connecting portion 1061 and a mounting groove 1062 formed within the annular connecting portion 1061. A support 1063 is positioned in the center of the mounting groove 1062. A through-hole 51 is provided on the sensing circuit board 5 for insertion of the support 1063, which is then embedded within the mounting groove 1062. The structural coordination between the support 1063 and the mounting groove 1062 ensures accurate positioning and stable installation of the sensing circuit board 5, minimizing the risk of loosening or displacement of the sensing circuit board 5 due to vibration or impact, which could affect the inductive unlocking performance. A waterproof gasket 9 is sleeved on the outer wall of the annular connecting portion 1061, and an annular groove 107 is provided at the lower end of the lock case 100 for the insertion of the waterproof gasket 9. The design of the waterproof gasket 9 and the annular groove 107 further enhances the waterproof performance of this electronic padlock. Under this premise, the base plate 106 and the lock case 100 are removable. Preferably, in this embodiment, after the sensor circuit board 5 is installed, the bottom plate 106 and the lock housing 100 can be sealed with glue and cannot be disassembled. This sealing method has good waterproof effect and good connection stability.

[0046] As mentioned above, this case protects an electronic padlock, and all technical solutions that are the same or similar to this case should be deemed to fall within the scope of protection of this case.

Claims

1. An electronic padlock, comprising a lock housing (100), a lock beam (1) installed in the lock housing (100), a locking mechanism (2) connected to the lock beam (1) for driving the lock beam (1) to move relative to the lock housing to unlock the lock, a motor (3) for driving the locking mechanism (2) to move, and a control circuit board (4), wherein a sensing circuit board (5) is further installed at the bottom of the lock housing (100), and the sensing circuit board (5) is electrically connected to the control circuit board (4) and the motor (3), characterized in that: A position detection switch (6) is also installed in the lock housing (100). The upper end of the motor (3) is connected to a driving member (7) that rotates with the motor (3). The driving member (7) includes a shifting tooth (71) arranged on the outer periphery of the driving member (7). Four shifting teeth (71) are equidistantly arranged in the circumferential direction, and the angle formed by each two adjacent shifting teeth (71) extending to the axis of the driving member (7) is 90 degrees. In the locked state of the locking mechanism (2), one of the shifting teeth (71) abuts against the position detection switch. In the non-detection area on the left side of the position detection switch (6), when the sensing circuit board (5) senses the unlocking instruction, the motor (3) rotates to drive the driving member (7) to rotate; as the motor (3) rotates, the locking mechanism (2) is driven to operate through the shifting tooth (71) until the next shifting tooth (71) adjacent to the shifting tooth (71) in the rotation direction passes through the position detection switch (6), and the unlocking action is completed. At this time, the position detection switch (6) transmits a signal to make the control circuit board (4) control the motor (3) to cut off the power.

2. An electronic padlock according to claim 1, characterized in that: The position detection switch (6) is a touch switch or a proximity switch.

3. The electronic padlock according to claim 1, characterized in that: A fixing seat (200) is also fixedly provided in the lock housing (100), and the motor (3), the control circuit board (4), and the position detection switch (6) are all connected and fixed to the fixing seat (200), and a waterproof rubber pad is sealed between the fixing seat (200) and the lock housing (100).

4. The electronic padlock according to claim 1, characterized in that: The motor (3) includes a rotatable reducer (31), and the driving member (7) is connected to the upper end of the reducer (31) and can rotate along with the reducer (31).

5. An electronic padlock according to any one of claims 1 to 4, characterized in that: The locking beam (1) is symmetrically provided with a recessed portion (11) cooperating with the locking mechanism (2) on the inner side wall thereof. The locking mechanism (2) comprises a toggle member (21) abutting against the driving member (7) and capable of rotating following the driving member (7), a rotating column (22) fixedly connected to the upper end of the toggle member (21) and capable of rotating following the toggle member (21), and a sphere (23) symmetrically arranged on the left and right sides of the rotating column (22) and capable of being partially accommodated in the recessed portion (11). The rotating column (22) comprises a protruding portion (221) for pushing the sphere (23) into the recessed portion (11) when the rotating column (22) rotates. The protruding portion (221) is symmetrically arranged front to back. The rotating column (22) further comprises a notch portion (222) for accommodating the sphere (23) after the sphere (23) escapes from the recessed portion (11).

6. The electronic padlock according to claim 5, characterized in that: A cross limiting protrusion (223) is provided on the upper end of the rotating column (22), and a cross limiting groove (224) is formed between the cross limiting protrusions (223). The cross limiting groove (224) includes four notches (2241) arranged at equal intervals, and the angle formed by two adjacent notches (2241) extending to the axis of the rotating column (22) is 90 degrees. A torsion spring (8) is provided on the outer periphery of the cross limiting protrusion (223), and one end of the torsion spring (8) is limited at One end of the torsion spring (8) is fixedly connected to the lock housing (100) and the other end is fixedly connected to the lock housing (100); the torsion spring (8) is used to drive the rotating column (22) to rotate and reset after the ball (23) is separated from the recessed portion (11) and when the lock beam (1) is pressed down again, and the ball (23) is pushed into the recessed portion (11) to complete the locking action; the locking mechanism (2) also includes a limiting mechanism (24) provided at the lower end of the rotating column (22) for limiting the rotation angle of the rotating column (22).

7. The electronic padlock according to claim 6, characterized in that: The limiting mechanism (24) includes a limiting plate (241) fixedly arranged in the lock housing (100), a special-shaped groove (2411) is provided on the limiting plate (241), and the rotating column (22) includes a convex strip (225) rotatably arranged in the special-shaped groove (2411), and the special-shaped groove (2411) includes two symmetrically arranged 90-degree fan-shaped grooves (24111).

8. The electronic padlock according to claim 7, characterized in that: The lock housing (100) is provided with an accommodating cavity (101) for accommodating the ball (23) and allowing it to move. A limiting surface for limiting the ball (23) from completely escaping from the accommodating cavity (101) is provided on the outer wall surface of the accommodating cavity (101). The lock housing (100) is also provided with a first channel (102) and a second channel (103) for accommodating the two ends of the lock beam (1) and allowing it to move.

9. The electronic padlock according to claim 8, characterized in that: A first drain hole (104) communicating with the first channel (102) is provided on the side wall of the lock housing (100), and a second drain hole (105) communicating with the second channel (103) is also provided on the side wall of the lock housing (100).

10. The electronic padlock according to claim 9, characterized in that: The lock housing (100) includes a bottom plate (106), the bottom plate (106) includes an annular connecting portion (1061), a mounting groove (1062) formed in the annular connecting portion (1061), a pillar (1063) is provided in the middle of the mounting groove (1062), a through hole (51) for inserting the pillar (1063) is provided on the sensing circuit board (5), the sensing circuit board (5) is embedded in the mounting groove (1062), a waterproof gasket (9) is sleeved on the outer wall surface of the annular connecting portion (1061), and an annular groove (107) for embedding the waterproof gasket (9) is correspondingly provided at the lower end of the lock housing (100).

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