Electronic padlock

Abstract

According to the main improved technical scheme, a position detection switch is further installed in a lock shell, the upper end of a motor is connected with a driving piece rotating along with the motor, the driving piece comprises shifting teeth arranged on the periphery of the driving piece, and the four shifting teeth are arranged in the circumferential direction at equal intervals; every two adjacent shifting teeth extend to the axis of the driving part to form an angle of 90 degrees; in the locking state of the locking mechanism, one shifting tooth abuts against a non-detection area on the left side of the position detection switch, and after the induction circuit board inducts an unlocking instruction, the motor rotates to drive the driving piece to rotate; along with the rotation of the motor, the shifting tooth drives the locking mechanism to act until the next shifting tooth adjacent to the shifting tooth in the rotation direction passes through the position detection switch, the unlocking action is completed, and at the moment, the position detection switch transmits a signal to enable the control circuit board to control the motor to be powered off. Therefore, excessive operation of the motor is avoided, and the motor and the locking mechanism are prevented from being damaged due to excessive rotation of the motor.

Description

Technical Field

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

[0002] As a safety device, passive electronic padlocks are widely used in various occasions, such as warehouses, cabinets, travel bags and other items. Traditional mechanical lock cylinders and early electronic lock cylinders rely on physical keys or simple electronic components for unlocking operations. With the development of technology, smart locks and passive padlocks with electronic control systems have gradually become the mainstream of the market, and their safety, convenience and reliability have been significantly improved.

[0003] However, existing passive electronic padlocks still have some design deficiencies. Traditional products usually use a limit mechanism to limit the rotation range of the motor to ensure that the locking part can accurately switch from the locked state to the unlocked state. This not only makes the unlocking stroke inconsistent each time, but also after long-term use, the wear of mechanical parts may cause the limit failure, affecting the accuracy of unlocking and closing. Users may encounter situations where they cannot open or close the lock smoothly.

[0004] Due to the lack of accurate position detection means, existing designs often require the motor to rotate several times to ensure successful unlocking, and generally the motor will not automatically power off after the unlocking action is completed. Although this improves the success rate of unlocking, it also increases unnecessary power consumption. Under frequent use, the battery life is significantly shortened, increasing the maintenance cost and inconvenience of users.

[0005] When the motor must run all the way to the physical limit and there is no power-off mechanism, long-term excessive operation can easily damage the motor and locking mechanism, increase the failure rate, and even burn the motor due to overheating. This not only increases maintenance costs, but also poses a safety hazard to users. Due to the reliance on mechanical limit components, these components may wear out or fail after long-term use, which in turn affects the stability and reliability of the entire system. Users have to frequently replace or repair locks, which increases the cost of use.

[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 shortcomings 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 comprises a lock shell, wherein a lock beam is installed in the lock shell, a locking mechanism connected to the lock beam and used to drive the lock beam to move relative to the lock shell so as to unlock, a motor and a control circuit board for driving the locking mechanism to move, an induction circuit board is also installed at the bottom of the lock shell, the induction circuit board is electrically connected to the control circuit board and the motor, a position detection switch is also installed in the lock shell, a driving member that rotates with the motor is connected to the upper end of the motor, the driving member comprises a shifting tooth arranged on the outer periphery of the driving member, four shifting teeth are arranged equidistantly in the circumferential direction, and the angle formed by each two adjacent shifting teeth extending to the axis of the driving member is 90 degrees; in the locked state of the locking mechanism, one of the shifting teeth abuts against a non-detection area on the left side of the position detection switch, and when the induction circuit board senses an unlocking instruction, the motor rotates to drive the driving member to rotate; as the motor rotates, the locking mechanism is driven to move by the shifting tooth until the next shifting tooth adjacent to the shifting tooth in the rotation direction passes the position detection switch, and the unlocking action is completed, at which time the position detection switch transmits a signal to make the control circuit board control the motor to cut off power.

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

[0011] Furthermore, a fixing seat is fixedly arranged in the lock housing, and the motor, the control circuit board, and the 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 arranged on the inner side wall of the lock beam, and the locking mechanism includes a toggle member abutting against the driving member and rotating along with the driving member, a rotating column fixedly connected to the upper end of the toggle member and rotating along with the toggle member, and a ball symmetrically arranged on the left and right sides of the rotating column and partially accommodated in the recessed portion, the rotating column includes a protruding portion for pushing the ball into the recessed portion when the rotating column rotates, and the protruding portion is symmetrically arranged front and back, and 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, and 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 detaches 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, the lock shell is provided with a receiving cavity for accommodating the ball and allowing it to move, and the outer wall of the receiving cavity is provided with a limiting surface for limiting the ball from completely escaping from the receiving cavity. The lock shell is also provided with 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 formed on the side wall of the lock housing, and a second drain hole communicating with the second channel is formed on the side wall of the lock housing.

[0018] Furthermore, the lock housing includes a bottom plate, the bottom plate 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 opened on the sensing circuit board, the sensing circuit board is embedded in the mounting groove, a waterproof gasket is sleeved 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 housing.

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

[0020] 1. In this case, a position detection switch is set to cooperate with the teeth of the driving part. In the locked state, one tooth is located in the non-detection area on the left side of the position detection switch. When the sensing circuit board receives the unlocking command, the motor starts and drives the driving part to rotate. Since the four teeth are equidistantly distributed and the angle formed between two adjacent teeth is 90 degrees, each rotation just covers the angle required for unlocking, effectively ensuring the consistency and accuracy of each unlocking action, and eliminating the uncertainty caused by mechanical wear or limit failure in the prior art. Users can rely on the same unlocking experience every time, which improves the reliability of the electronic padlock in this case.

[0021] 2. When the next tooth adjacent to the current tooth 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 of the motor, avoiding excessive operation of the motor, preventing damage to the motor and locking mechanism due to excessive rotation, preventing the motor from overheating and being damaged due to long-term operation, and protecting the safety of the system hardware.

[0022] 3. The electronic padlock with this structure effectively reduces the friction and wear between the internal parts of the electronic padlock, improves the durability of the system, and reduces maintenance costs and failure rates. Since the motor only needs to rotate 0.5 degrees to complete a complete unlocking action, the whole process is very fast and the user can complete the operation in a short time. The fast response time improves the user experience, especially in emergency situations, and can provide faster security protection.

[0023] 4. In this case, there are four teeth that are equidistantly arranged around the circumference, and the angle formed by the two adjacent teeth extending to the axis of the driving member is 90 degrees. When the unlocking action is completed, the locking mechanism automatically resets and the motor stops at the position where the next tooth is ready. That is, after the motor completes the unlocking action and cuts off the power, the next tooth continues to be connected to the non-detection area on the left side of the position detection switch, which facilitates the next unlocking operation and ensures stability. This design simplifies the process of continuous unlocking, reduces the waiting time for users, 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 It is a structural schematic diagram of the locking mechanism, motor, lock beam, drive member and position detection switch of this case in the coordinated state.

[0026] Figure 3 It is a structural schematic diagram of the limit mechanism, rotating column, toggle member and torsion spring of 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 features of the present invention and other related features are further described in detail below through embodiments to facilitate understanding by those skilled in the art:

[0031] like Figures 1 to 6As shown, the present invention provides an electronic padlock, including a lock shell 100, which is used to protect internal components and provide an installation platform, providing a solid and closed environment, protecting internal components from external influences, and enhancing the overall stability and security of the system. In specific implementation, the lock shell 100 is made of metal material, preferably copper and zinc alloy. A lock beam 1, a locking mechanism 2 connected to the lock beam 1 for driving the lock beam 1 to move relative to the lock shell to unlock, a motor 3 for driving the locking mechanism 2 to move, and a control circuit board 4 are installed in the lock shell 100. The lock beam 1 is connected to the lock shell 100 through the locking mechanism 2 to achieve relative movement to complete the unlocking or locking action. An induction circuit board 5 is also installed at the bottom of the lock shell 100, and the induction circuit board 5 is electrically connected to the control circuit board 4 and the motor 3. According to the instructions issued by the induction circuit board 5, the motor 3 rotates to drive the action of the locking mechanism 2 to unlock or close the lock. In specific implementation, the induction circuit board 5 is used to receive an external unlocking instruction and send a control signal to the motor 3; at the same time, the state of the position detection switch 6 is monitored to control the motor 3 to power off. The sensing circuit board 5 realizes the intelligent control of the electronic padlock in this case and improves the user experience. In specific implementation, the sensing circuit board 5 supports the mobile phone NFC near-field communication technology, and provides power in reverse through the mobile phone NFC. No built-in power supply is required, 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. A driving member 7 that rotates with the motor 3 is connected to the upper end of 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 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 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 case, the position detection switch 6 is arranged to cooperate with the shifting tooth 71 of the driving member 7. When the motor drives the driving member 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. After receiving the signal, the sensing circuit board 5 transmits the signal to the control circuit board 4 to control the motor 3 to power off. In this way, the design of this structure and control method provides accurate position feedback for the electronic padlock of this case, avoids the excessive operation of the motor 3, prevents the motor 3 and the locking mechanism 2 from being damaged due to excessive rotation, prevents the motor 3 from being damaged due to overheating due to long-term operation, and protects the motor 3 and other key components from damage.Compared with the prior art that sets 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 to touch the position detection switch 6 after unlocking, and prevents the locking mechanism 2 and the motor 3 from being damaged due to long-term such operation, 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 the present invention are equidistantly arranged in four directions, and the angle formed by the extension of two adjacent teeth to the axis of the driving member is 90 degrees, which means that the unlocking rotation angle of the electronic padlock of the present invention 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 with 45 and 60 degrees, the 90-degree rotation angle provides enough 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 to complicate the mechanical structure.

[0035] In contrast, an unlocking angle of 45 or 60 degrees, although it can reduce the rotation time, may not be enough to ensure the full release of the locking mechanism, especially in some application scenarios that require a larger action space. In addition, a smaller angle may increase the requirements for motor torque, thereby increasing the design difficulty. Smaller angles require higher manufacturing and assembly accuracy to ensure that each rotation is accurate. This not only increases production and maintenance costs, but may also affect long-term reliability.

[0036] Compared with 120 degrees and 180 degrees, a larger rotation angle means more energy consumption and wear of the internal structure and mechanical transmission, especially in the case of frequent use. In addition, a larger rotation angle may cause the motor 3 and the locking mechanism 2 to bear greater stress, increasing the risk of wear and failure. And a longer rotation time may increase the user's waiting time, reduce the user experience, and may not be able to respond quickly 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 seat 200 is also fixedly arranged in the lock shell 100, and the motor 3, the control circuit board 4, and the position detection switch 6 are all connected and fixed on the fixing seat 200. The setting of the fixing seat 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 caused by vibration or impact. In specific implementation, a limit structure for limiting the power supply machine 3, the control circuit board 4, and the position detection switch 6 is provided on the fixing seat 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 seat 200 and the lock shell 100, and the waterproof rubber pad can effectively prevent water vapor from intruding, 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 of 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 setting 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, so that the high-speed rotation of the motor 3 is converted into a low-speed and high-torque movement suitable for driving the locking mechanism 2, and the torque required for driving the locking mechanism 2 is increased, ensuring sufficient power to complete the unlocking and locking actions, reducing the operating speed of the motor 3, reducing the wear of mechanical parts, and extending 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, a recessed portion 11 cooperating with the locking mechanism 2 is symmetrically arranged on the inner side wall of the lock beam 1. In specific implementation, the lock beam 1 is a common U-shaped structure, and the recessed portion 11 is symmetrically arranged on the inner side walls of the two ends of the U-shaped lock beam. The locking mechanism 2 includes a toggle member 21 that abuts against the driving member 7 and can rotate with the driving member 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 ball 23 symmetrically arranged on the left and right sides of the rotating column 22 and partially accommodated in the recessed portion 11. The toggle member 21 ensures the synchronous movement of the locking mechanism 2 and the driving member 7, thereby improving the coordination of the system. In specific implementation, the shape of the recessed portion 11 matches that of the ball 23. The rotating column 22 includes a protrusion 221 for pushing the ball 23 into the recess 11 when the rotating column 22 rotates. The protrusion 221 is symmetrically arranged front and back. The rotating column 22 also includes a notch 222 for accommodating the ball 23 after the ball 23 escapes from the recess 11. The design of the protrusion 221 and the notch 222 ensures the accurate movement of the ball 23, realizes reliable locking and unlocking actions, reduces additional mechanical parts, and reduces the design complexity and failure rate. The cooperation between the recess 11 and the ball 23 ensures the stability of the lock beam 1 in the locked state and prevents accidental unlocking. When the electronic padlock is in a locked state, the protrusion 221 of the rotating column 22 presses the two side balls 23 so that the two side balls 23 are respectively accommodated in the corresponding recessed portions 11, so that the lock beam 1 is locked; when the motor 3 rotates, the shifting teeth 71 of the driving member 7 drives 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 correspondingly inserted into the notched portions 222 of the rotating column 22, and the lock beam 1 pops up to complete the unlocking.

[0041] Furthermore, 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 equidistantly, 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 recessed portion 11 after the ball 23 is separated from the recessed portion 11 and when the lock beam 1 is pressed down again, thereby completing the locking action. That is, after the user has unlocked the electronic padlock, if the user wants to relock the electronic padlock, he only needs to press the lock beam 1 down again. At this time, the locking mechanism 2 will automatically reset due to the torsion force of the torsion spring 8, that is, the rotating column 22 will reset and rotate under the torsion force of the torsion spring 8, and the protrusion 221 of the rotating column 22 will press the spheres 23 on both sides and make the spheres 23 on both sides move outward. As the lock beam 1 continues to be pressed down, the spheres 23 on both sides are respectively accommodated in the corresponding recessed parts 11, so that the lock beam 1 is locked again, and the electronic padlock reaches the locked state. The function of the cross limit groove 224 is to facilitate the installation of the torsion spring 8 and provide a stable preload for the torsion spring 8. That is to say, because the different torsion springs 8 produced cannot guarantee that the initial preload is consistent, it may affect the rotation angle of the rotating column 22, thereby affecting the unlocking, and also affecting the unlocking accuracy in the long run. However, by fitting one end of the torsion spring 8 in one of the slots 2241, it can be effectively ensured that the preload forces of all torsion springs 8 of the same type 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 groove 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 arranged at the lower end of the rotating column 22 for limiting the rotation angle of the rotating column 22. By setting a limiting mechanism, mechanical wear caused by excessive rotation of the rotating column 22 is avoided, and the service life of the system is extended. It is ensured that the range of motion of the rotating column 22 is within the controllable range, and the unlocking angle is ensured to be 90 degrees, thereby improving the stability and reliability of the system.

[0042] Continue to refer to Figure 1-Figure 5As shown, the limiting mechanism 24 includes a limiting piece 241 fixedly arranged in the lock housing 100, and a special-shaped groove 2411 is provided on the limiting piece 241. 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. Through the cooperation of the above-mentioned limiting structure, the torsion force of the torsion spring 8 is effectively prevented from driving the rotating column 22 to rotate infinitely, and a pre-tightening force is always provided to the torsion spring 8 to facilitate the automatic reset of the rotating column 22, and it is always kept within the range of 90 degrees, which effectively protects the corresponding mechanical parts, avoids the wear of the corresponding parts of the locking mechanism 2 and the damage of the motor 3 due to excessive rotation of the rotating column 22, and prolongs the service life of the system.

[0043] Furthermore, if Figure 1 , Figure 4-Figure 6 As shown, a receiving cavity 101 for receiving and moving the ball 23 is provided in the lock housing 100, and a limiting surface is provided on the outer wall of the receiving cavity 101 for limiting the ball 23 from completely escaping from the receiving cavity 101. In specific implementation, the receiving cavity 101 is opened corresponding to the balls 23 on both sides. The receiving cavity 101 provides a stable activity space for the ball 23, ensures the smooth movement of the ball 23 during the locking and unlocking process, and effectively prevents the ball 23 from interfering with other components or wearing other components. The setting of the limiting surface ensures that the ball 23 will not escape from the receiving cavity 101, thereby ensuring reliability. 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.

[0044] like Figure 1 , Figure 4-Figure 6 As shown, a first drainage hole 104 is provided on the side wall of the lock shell 100 and is connected to the first channel 102. A second drainage hole 105 is provided on the side wall of the lock shell 100 and is connected to the second channel 103. Since electronic padlocks are generally used outdoors, they need to have good waterproof performance. In the above embodiment, a waterproof rubber pad is sealed between the fixing seat 200 and the lock shell 100. In this case, the waterproof performance of the electronic padlock of this case is further improved by providing the first drainage hole 104 and the second drainage hole 105. Even in an unexpected situation, after the liquid flows into the first channel 102 or the second channel 103, it can be discharged from the lock shell through the first drainage hole 104 and the second drainage hole 105 respectively, preventing the liquid from accumulating inside, achieving a good waterproof effect, effectively protecting the internal mechanical parts and electronic components from the influence of the humid environment, reducing the risk of short circuit or corrosion caused by liquid intrusion, and avoiding the situation that the lock cannot be opened, thereby improving the stability and safety of the electronic padlock of this case and extending the service life.

[0045] like Figure 1 , Figure 4 , Figure 5As shown, the lock housing 100 includes a bottom plate 106, the bottom plate 106 includes an annular connection portion 1061, a mounting groove 1062 formed in the annular connection portion 1061, a pillar 1063 is provided in the middle of the mounting groove 1062, a through hole 51 for the pillar 1063 to be inserted is provided on the induction circuit board 5, and the induction circuit board 5 is embedded in the mounting groove 1062. Through the structural coordination of the pillar 1603 and the mounting groove 1062, it is ensured that the induction circuit board 5 can be accurately positioned and stably installed, and the loosening or displacement of the induction circuit board 5 caused by vibration or impact is reduced to affect the performance of induction unlocking. A waterproof gasket 9 is sleeved on the outer wall surface of the annular connection portion 1061, and an annular groove 107 for the waterproof gasket 9 to be embedded is correspondingly provided at the lower end of the lock housing 100. The design of the waterproof gasket 9 and the annular groove 107 further improves the waterproof performance of the electronic padlock of this case. Under this premise, the bottom plate 106 and the lock housing 100 are in a detachable state. Preferably, in this case, 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 shell (100), wherein a lock beam (1) is installed in the lock shell (100), a locking mechanism (2) connected to the lock beam (1) for driving the lock beam (1) to move relative to the lock shell to unlock the lock, a motor (3) and a control circuit board (4) for driving the locking mechanism (2) to move, and an induction circuit board (5) is also installed at the bottom of the lock shell (100), and the induction 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) comprises a shifting tooth (71) arranged on the outer periphery of the driving member (7); four shifting teeth (71) are arranged equidistantly 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 (6); The non-detection area on the left side of the position detection switch (6) is located. 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 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 (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. An electronic padlock according to claim 1, characterized in that: A fixing seat (200) is also fixedly arranged in the lock housing (100); 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. An electronic padlock according to claim 1, characterized in that: The motor (3) comprises 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 with the driving member (7), a rotating column (22) fixedly connected to the upper end of the toggle member (21) and capable of rotating with the toggle member (21), and a ball (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 ball (23) into the recessed portion (11) when the rotating column (22) rotates, and the protruding portion (221) is symmetrically arranged frontward and rearward. The rotating column (22) also comprises a notch portion (222) for accommodating the ball (23) after the ball (23) escapes from the recessed portion (11).

6. An electronic padlock according to claim 5, characterized in that: A cross limiting protrusion (223) is provided at the upper end of the rotating column (22), 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, 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 sleeved on the outer periphery of the cross limiting protrusion (223), one end of the torsion spring (8) is limited at One end is in a notch (2241) 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 and push the ball (23) into the recessed portion (11) after the ball (23) is separated from the recessed portion (11) and when the lock beam (1) is pressed down again, thereby completing the locking action; the locking mechanism (2) also includes a limiting mechanism (24) arranged at the lower end of the rotating column (22) for limiting the rotation angle of the rotating column (22).

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

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

9. An 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. An electronic padlock according to claim 9, characterized in that: The lock housing (100) comprises a bottom plate (106), the bottom plate (106) comprises an annular connecting portion (1061), a mounting groove (1062) formed in the annular connecting portion (1061), a pillar (1063) is arranged in the middle of the mounting groove (1062), a through hole (51) for inserting the pillar (1063) is opened 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 arranged at the lower end of the lock housing (100).

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