Bluetooth intelligent padlock

Abstract

The invention relates to the technical field of padlocks, in particular to a Bluetooth intelligent padlock which comprises a lock body, a lock beam, a circuit board and a movable electromagnetic lock cylinder, a containing cavity is formed in the lock body, and a power supply unit is arranged in the containing cavity; the lock beam is provided with a movable end and a fixed end, the movable end is provided with a locking groove and is integrated with a Bluetooth module and a control module, the movable electromagnetic lock cylinder is arranged in the containing cavity in a sliding mode and comprises a first connecting part and a second connecting part, the first connecting part is matched with the movable end in a clamped mode, and the second connecting part is matched with the movable end in a clamped mode. The fixed end is telescopically inserted into the second connecting part and rotationally connected with the second connecting part, a displacement area is reserved in the containing cavity so that the movable electromagnetic lock cylinder can linearly move up and down, and a displacement driving assembly is further arranged in the containing cavity. The lock can support a user to select locking or unlocking on a mobile phone APP, and the length of the lock beam can be adjusted, so that the lock is suitable for different use scenes.

Description

Technical Field

[0001] The present invention relates to the technical field of padlocks, and particularly to a Bluetooth intelligent padlock. Background Art

[0002] With the rapid development of smart home and Internet of Things technologies, intelligent padlocks, as a new type of security protection device, have gradually been widely used. Through the Bluetooth function, intelligent padlocks can be connected to external devices such as smartphones, providing functions such as remote control, thus significantly improving the convenience and security of traditional padlocks.

[0003] However, traditional intelligent padlocks usually adopt a lock beam design with a fixed length. Although this design can meet certain specific requirements, it may lack sufficient flexibility and adaptability in different usage environments. Especially in some application scenarios with high requirements for security and stability, the limitations of existing intelligent padlocks in terms of structure and function are particularly obvious, resulting in low versatility. Summary of the Invention

[0004] In order to solve the problems in the above background art, the present invention provides a Bluetooth intelligent padlock, aiming to provide a dynamic adjustment function for the length of the lock beam.

[0005] The solution adopted by the present invention to solve its technical problems is: A Bluetooth intelligent padlock for use in conjunction with the APP of an external device, comprising:

[0006] A lock body, the interior of the lock body has a receiving cavity, and a power supply unit is provided in the receiving cavity;

[0007] A lock beam, the lock beam has a movable end and a fixed end, and the movable end has a locking groove;

[0008] A circuit board, the circuit board is fixedly arranged inside the receiving cavity and electrically connected to the power supply unit, and is integrated with a Bluetooth module and a control module; the Bluetooth module is used to receive the Bluetooth signal of the external device, and the control module is used to analyze the Bluetooth signal and generate a control instruction;

[0009] A movable electromagnetic lock core, the movable electromagnetic lock core is slidably arranged inside the receiving cavity and electrically connected to the circuit board, and includes a first connecting portion and a second connecting portion. Among them, the first connecting portion is in clamping cooperation with the movable end, and is used to be driven by the control module to lock or release the movable end. The fixed end is telescopically inserted into the second connecting portion and rotatably connected thereto, and a first return spring is built in the second connecting portion, so that the fixed end can rotate around the axis in the unlocked state;

[0010] Among them, a displacement area is left inside the accommodation cavity for the up-and-down linear displacement of the movable electromagnetic lock core, and a displacement driving assembly is also provided in the accommodation cavity. The displacement driving assembly is electrically connected to the control module and is used to receive the lock beam length adjustment instruction sent by the external APP to drive the movable electromagnetic lock core to displace along the displacement area, so as to adjust the exposed length of the lock beam.

[0011] In a possible implementation manner, the displacement driving assembly includes:

[0012] A micro motor, which is fixedly arranged inside the accommodation cavity;

[0013] A lead screw, which is in transmission connection with the output end of the micro motor; and

[0014] A sliding seat, which is in threaded cooperation with the lead screw, and the first connecting part and the second connecting part are respectively fixed on both sides of the sliding seat;

[0015] Among them, the control module can drive the first connecting part and the second connecting part to move along the displacement area simultaneously by adjusting the forward and reverse rotation of the micro motor.

[0016] In a possible implementation manner, a sensor module for real-time feedback of the position data of the movable electromagnetic lock core is embedded in the movable electromagnetic lock core.

[0017] In a possible implementation manner, the first connecting part includes:

[0018] A housing;

[0019] An electromagnetic coil, which is fixed inside the housing;

[0020] An electromagnetic lock tongue, which is connected to the armature of the electromagnetic coil; and

[0021] A second return spring for pushing the electromagnetic lock tongue into the locking groove;

[0022] Among them, when the electromagnetic coil is energized, the electromagnetic lock tongue retracts against the spring force, thereby releasing the movable end.

[0023] In a possible implementation manner, the electromagnetic lock tongue has a wedge-shaped end, and the movable end has a stepped locking groove, and the wedge-shaped end forms a locking fit with the stepped locking groove.

[0024] In a possible implementation manner, the power supply unit includes:

[0025] A power supply battery, which is electrically connected to the circuit board and is used to supply power to the movable electromagnetic lock core, the displacement driving assembly and the circuit board; and

[0026] Charging structure, which is one of the USB interface and the type-c interface, and is used to connect to an external power source for charging the power supply unit.

[0027] In a possible implementation manner, the circuit board is also integrated with a BMS module, and the control module can send real-time power data and charging status information to an external APP through the Bluetooth module.

[0028] In a possible implementation manner, the control module is built-in with an operation log recording unit for generating lock / unlock operation records in real time.

[0029] In a possible implementation manner, a control button group is provided at the bottom of the lock body, which is used to trigger the Bluetooth module after being pressed, so as to allow an external device APP to search and establish a connection.

[0030] In summary, the beneficial effects of the present invention are as follows:

[0031] This application provides a padlock structure integrating lock beam length adjustment and intelligent unlocking through the collaborative design of a movable electromagnetic lock core and a displacement driving component. The movable electromagnetic lock core includes a first connection part and a second connection part, wherein the first connection part can control the movable end to perform locking or unlocking operations through an external APP. The fixed end is installed in the second connection structure in a rotating manner. After the locking of the movable end by the first connection structure is released, the movable end can automatically disengage from the lock body. In addition, the displacement driving component includes a lead screw, a micro motor and a sliding seat, and the first connection part and the second connection part are respectively fixed on both sides of the sliding seat. Through this design, the movable electromagnetic lock core can be controlled by an external APP to move up and down along the displacement area inside the lock body, so as to adjust the positions of the first connection part and the second connection part, and further change the exposed length of the lock beam. This application can realize the dual functions of lock beam length adjustment and intelligent unlocking, providing a more flexible, intelligent and safe use experience for users.

[0032] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, the following specific preferred embodiments are given and described in detail in conjunction with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic structural diagram of this embodiment;

[0034] Figure 2 It is an internal exploded view of this embodiment.

[0035] In the figure: 1. Lock body; 11. Accommodation cavity; 12. Displacement area; 2. Lock beam; 21. Movable end; 211. Stepped locking groove; 22. Fixed end; 3. Circuit board; 4. Movable electromagnetic lock core; 41. First connection part; 411. Housing; 412. Electromagnetic coil; 413. Electromagnetic lock tongue; 414. Second return spring; 415. Wedge-shaped end; 42. Second connection part; 5. Displacement drive assembly; 51. Micro motor; 52. Lead screw; 53. Sliding seat; 6. Power supply unit; 61. Power supply battery; 62. Charging structure; 7. Control button group. Detailed implementation manners

[0036] In order to make the content of the present invention easier to be clearly understood, the present invention will be further described below according to specific embodiments in conjunction with the accompanying drawings.

[0037] It should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. used herein is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0038] Unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0039] Aiming at the problems in the background technology, the Bluetooth intelligent padlock proposed by the present invention is used in cooperation with the APP of an external device, and includes:

[0040] A lock body 1, the interior of the lock body 1 has an accommodation cavity 11, and a power supply unit 6 is arranged in the accommodation cavity 11;

[0041] A lock beam 2, the lock beam 2 has a movable end 21 and a fixed end 22, and the movable end 21 has a locking groove;

[0042] A circuit board 3, the circuit board 3 is fixedly arranged inside the accommodation cavity 11 and is electrically connected to the power supply unit 6, and is integrated with a Bluetooth module and a control module; the Bluetooth module is used for receiving the Bluetooth signal of an external device, and the control module is used for analyzing the Bluetooth signal and generating a control instruction;

[0043] A movable electromagnetic lock core 4 is slidably disposed inside the accommodation cavity 11 and electrically connected to the circuit board 3. It includes a first connection portion 41 and a second connection portion 42. Among them, the first connection portion 41 is in snap-fit connection with the movable end 21 and is used to be driven by the control module to lock or release the movable end 21. The fixed end 22 is telescopically inserted into the second connection portion 42 and rotatably connected thereto. And a first return spring is built in the second connection portion 42, so that the fixed end 22 can rotate around the axis in the unlocked state;

[0044] Among them, a displacement area 12 is left inside the accommodation cavity 11 for the up-and-down linear displacement of the movable electromagnetic lock core 4. And a displacement driving assembly 5 is also provided inside the accommodation cavity 11. The displacement driving assembly 5 is electrically connected to the control module and is used to receive the lock beam 2 length adjustment instruction sent by the external APP to drive the movable electromagnetic lock core 4 to displace along the displacement area 12, so as to adjust the exposed length of the lock beam 2.

[0045] With reference to Figures 1 through 2 As shown, in this embodiment, the external device can be an electronic device with a Bluetooth connection function such as a smart phone or a smart watch, and is installed with an APP specifically used to control the padlock of the present application to achieve convenient remote control and adjustment.

[0046] The lock body 1, as the basic support structure of the padlock, is made of a high-strength alloy material to ensure its excellent impact resistance and durability. The internal structure is designed as a multi-layer sealed accommodation cavity 11, and a waterproof and dustproof structure is integrated to ensure that the padlock can maintain good performance and stability in harsh outdoor environments. The space of the accommodation cavity 11 is divided into two main areas: the main control cavity and the power cavity. A circuit board 3 and a power supply unit 6 are fixedly installed inside the main control cavity. The power supply unit 6 provides stable power support to ensure the normal operation of the circuit board 3 and other electronic components. And a Bluetooth communication module, a control chip (such as the ESP32 series) and a driving circuit are integrated on the circuit board 3. The Bluetooth module can receive the Bluetooth signal sent by the external device (mobile phone APP). The control module generates corresponding pulse signals to drive the electromagnetic lock core and the displacement assembly to act by analyzing the Bluetooth signal sent by the APP (including unlocking, locking and length adjustment instructions).

[0047] The lock beam 2 is a U-shaped structure, made of high-hardness boron steel, and is divided into a movable end 21 and a fixed end 22: a locking groove is provided at the end of the movable end 21, and a mechanical clamping is realized through the first connecting portion 41 of the movable electromagnetic lock core 4; the fixed end 22 is connected to the second connecting portion 42 of the electromagnetic lock core through a telescopic latch, the surface of the latch is coated with a wear-resistant ceramic coating, and a first reset spring of fatigue-resistant alloy material is embedded inside, so that the fixed end 22 can rotate around the axis and automatically reset when unlocked. The lock beam 2 of this application has a length adjustable function-when the user sends an adjustment instruction through the APP, the displacement drive component 5 (composed of a micro-stepping motor, a precision screw or an external guide rail) at the bottom of the accommodating cavity 11 is started, and the motor drives the screw to rotate after receiving the pulse signal of the control module, driving the electromagnetic lock core to move linearly up and down along the guide rail in the displacement area 12, thereby changing the telescopic length of the fixed end 22 in the lock body 1, and realizing the stepless adjustment of the overall exposed part of the lock beam 2 from 40mm to 120mm.

[0048] The movable electromagnetic lock core 4 is the core execution component. When it is locked, the control module energizes it, so that it generates magnetic force to attract the lock tongue and insert it into the locking groove of the movable end 21; when unlocking, the electromagnet is powered off, and the lock tongue retracts under the action of the spring. At this time, the user can turn the movable end 21 to complete the unlocking. When the length of the lock beam 2 needs to be adjusted, the electromagnetic lock core moves as a whole under the push of the displacement drive component 5, and the fixed end 22 expands and contracts synchronously with the second connecting part 42, while the movable end 21 always remains in a locked state due to the dynamic bite design of the first connecting part 41, ensuring that the lock body 1 will not be accidentally opened during the adjustment process.

[0049] In a possible implementation, the displacement drive assembly 5 includes:

[0050] A micro motor 51, wherein the micro motor 51 is fixedly disposed in the accommodating cavity 11;

[0051] A screw rod 52, wherein the screw rod 52 is drivingly connected to an output end of the micro motor 51; and

[0052] A sliding seat 53, wherein the sliding seat 53 is threadedly matched with the screw rod 52, and the first connecting portion 41 and the second connecting portion 42 are respectively fixed on two sides of the sliding seat 53;

[0053] The control module can drive the first connection part 41 and the second connection part 42 to move along the displacement area 12 simultaneously by adjusting the forward and reverse rotation of the micro motor 51 .

[0054] Combined with reference Figure 2As shown in the figure, in this embodiment, the micro motor 51 serves as the power core, and a micro stepping motor or a DC reduction motor is selected and fixed to the bottom of the accommodation cavity 11 of the lock body 1 through a high-rigidity bracket. The output shaft of the motor is rigidly connected to the lead screw 52 through a coupling. The lead screw 52 is made of precision-ground stainless steel, with a diameter of 3 mm, and its surface is coated with a Teflon coating to reduce the friction coefficient, so as to maintain low noise and high wear resistance during frequent reciprocating movements. The sliding seat 53 is machined from lightweight and high-strength aluminum alloy. A threaded hole matching the lead screw 52 is provided in the center thereof, and symmetric mounting platforms extend from both sides, and are rigidly connected to the first connecting portion 41 and the second connecting portion 42 of the electromagnetic lock core through high-strength screws, or fixed by welding or other means. At the same time, the back of the sliding seat 53 forms a sliding pair with the precision guide rail on the side wall of the accommodation cavity 11 to ensure the smoothness of the linear displacement. The control module outputs a PWM pulse signal to the micro motor 51 through the driving circuit on the circuit board 3, and precisely controls the rotation speed and direction of the motor by adjusting the pulse frequency and duty cycle. Specifically, when the user sends an instruction to extend the lock beam 2 through the APP, the control module generates a positive pulse sequence to drive the motor to rotate clockwise. The lead screw 52 converts the rotational motion into a linear upward displacement of the sliding seat 53, driving the first connecting portion 41 and the second connecting portion 42 to move upward synchronously; conversely, when receiving a shortening instruction, the motor rotates counterclockwise, and the sliding seat 53 moves downward along the guide rail, and the lock beam 2 gradually retracts.

[0055] In addition, the displacement driving assembly 5 is provided with a limit protection mechanism, including Hall sensors and magnet groups arranged at both ends of the lead screw 52. When the sliding seat 53 moves to the limit position of the displacement area 12, the Hall sensor triggers a position signal, and the control module immediately cuts off the power supply of the micro motor 51 and feeds back a warning of over-limit position through the APP.

[0056] In a possible implementation manner, a sensor module for real-time feedback of the position data of the movable electromagnetic lock core 4 is embedded in the movable electromagnetic lock core 4. Specifically, the sensor module embedded in the movable electromagnetic lock core 4 is composed of a Hall sensor array and a micro magnetic encoder: the Hall sensors are arranged at intervals along the moving path of the lock core, and by detecting the change in the magnetic field intensity of the permanent magnet (neodymium iron boron material) embedded in the side wall of the lock core, position pulse signals are generated in real time; the magnetic encoder is coaxially installed on the bottom rotating shaft of the lock core to convert the linear displacement into a digital signal. And the sensor data is transmitted to the control module to achieve closed-loop position control.

[0057] In a possible implementation manner, the first connecting portion 41 includes:

[0058] A housing 411;

[0059] An electromagnetic coil 412, and the electromagnetic coil 412 is fixed inside the housing 411;

[0060] The electromagnetic locking tongue 413, and the electromagnetic locking tongue 413 is connected to the armature of the electromagnetic coil 412; and

[0061] A second return spring 414 for pushing the electromagnetic locking tongue 413 into the locking groove;

[0062] Wherein, when the electromagnetic coil 412 is energized, the electromagnetic locking tongue 413 retracts against the spring force, thereby releasing the movable end 21.

[0063] In a possible implementation, the electromagnetic locking tongue 413 has a wedge-shaped end 415, and the movable end 21 correspondingly has a stepped locking groove 211, and the wedge-shaped end 415 forms a locking fit with the stepped locking groove 211.

[0064] With reference to Figure 2 As shown, in this embodiment, the housing 411 of the first connecting portion 41 is made of high-strength aluminum alloy and is precision machined by CNC. A stepped cavity is designed inside it for accommodating the electromagnetic component. The electromagnetic coil 412 is wound around a ferrite magnetic core with high-temperature enameled copper wire (wire diameter about 0.15 mm), and the electromagnetic locking tongue 413 is made of high-hardness stainless steel through a precision grinding process. The front end of the locking tongue is designed as a bidirectional symmetric wedge-shaped structure, and self-aligning engagement is achieved with the V-shaped stepped concave surface of the locking groove of the movable end 21.

[0065] In the locked state, when the electromagnetic coil 412 is de-energized, the second return spring 414 will push the locking tongue to fully extend, and its wedge-shaped head is tightly embedded in the locking groove of the movable end 21. Combining with the radial constraint of the guiding sleeve of the housing 411, a two-way mechanical locking effect against shear and tensile pulling is formed. When unlocking, the control module applies a pulsed current to the electromagnetic coil 412, and the generated electromagnetic field drives the armature to drive the locking tongue to quickly retract, so that the locking groove and the locking tongue are disengaged from the engagement, realizing unlocking.

[0066] In a possible implementation, the power supply unit 6 includes:

[0067] A power supply battery 61, the power supply battery 61 is electrically connected to the circuit board 3 and is used to supply power to the movable electromagnetic lock core 4, the displacement driving assembly 5 and the circuit board 3; and

[0068] A charging structure 62, the charging structure 62 is one of a USB interface and a type-c interface, and is used to connect to an external power supply for charging the power supply unit 6.

[0069] In a possible implementation, the circuit board 3 is also integrated with a BMS module, and the control module can send real-time power data and charging status information to an external APP through a Bluetooth module.

[0070] Refer to the attached drawing Figure 2 As shown, in this embodiment, the power supply battery 61 is a rechargeable lithium polymer battery, which is connected to the power management module (BMS) of the circuit board 3 by spot welding with nickel sheets, and supports hierarchical power supply for the movable electromagnetic lock core 4, the displacement driving assembly 5 and the Bluetooth control circuit at the same time. The charging structure 62 is a Type-C interface, which is hidden in the bottom groove of the lock body 1 and the charging management chip

[0071] In a possible implementation manner, the control module is built with an operation log recording unit for generating on / off lock operation records in real time, including operation time, operation type, user identity and execution result; after the Bluetooth module establishes a connection with an external APP, it automatically encrypts and transmits the operation records to the APP, and the APP synchronously uploads them to the cloud background for storage; the cloud background supports retrieving historical records through timestamps or user IDs and generating visual statistical reports.

[0072] In a possible implementation manner, a control button group 7 is provided at the bottom of the lock body 1, which is used to trigger the Bluetooth module after being pressed, so as to allow an external device APP to search and establish a connection. Specifically, pressing the red power button at the bottom of the password padlock can wake up the Bluetooth broadcast function of the lock, and at this time the blue indicator light starts to flash. At this time, the user can search for the Bluetooth signal of the lock through the mobile phone APP and establish a connection with it. After the lock is successfully connected to the mobile phone APP, if the APP does not actively send an instruction to the lock within 1 minute, the lock will automatically disconnect the Bluetooth connection (regardless of whether the user is performing an unlocking or locking operation). In addition, if the connection between the APP and the lock is an accidental operation and the connection duration exceeds 10 seconds, the lock will also automatically disconnect the connection with the APP.

[0073] The above-described embodiments are only the preferred implementation manners of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantive changes and modifications made by those skilled in the art on the basis of the invention shall fall within the protection scope of the present invention.

Claims

1. A Bluetooth smart padlock for use in conjunction with an APP of an external device, characterized in that, include: A lock body, wherein the lock body has an accommodating cavity inside, and a power supply unit is arranged in the accommodating cavity; A locking beam, the locking beam having a movable end and a fixed end, the movable end having a locking groove; A circuit board, which is fixed inside the accommodating cavity and electrically connected to the power supply unit, and is integrated with a Bluetooth module and a control module; the Bluetooth module is used to receive a Bluetooth signal from an external device, and the control module is used to parse the Bluetooth signal and generate a control instruction; A movable electromagnetic lock core, which is slidably disposed inside the accommodating cavity and electrically connected to the circuit board, and comprises a first connecting portion and a second connecting portion, wherein the first connecting portion is engaged with the movable end and is used to be driven by the control module to lock or release the movable end, and the fixed end can be telescopically inserted into the second connecting portion and rotatably connected thereto, and the second connecting portion is provided with a first return spring so that the fixed end can rotate around the axis in an unlocked state; Among them, a displacement area is reserved inside the accommodating cavity for the movable electromagnetic lock core to linearly displace up and down, and a displacement drive component is also provided in the accommodating cavity, which is electrically connected to the control module and is used to receive a lock beam length adjustment instruction sent by an external APP to drive the movable electromagnetic lock core to displace along the displacement area, thereby adjusting the exposed length of the lock beam.

2. The Bluetooth smart padlock according to claim 1, characterized in that, The displacement drive assembly comprises: A micro motor, wherein the micro motor is fixedly arranged in the accommodating cavity; A screw rod, the screw rod is drivingly connected to an output end of the micro motor; and A sliding seat, wherein the sliding seat is threadably matched with the lead screw, and the first connecting portion and the second connecting portion are respectively fixed on two sides of the sliding seat; The control module can drive the first connection part and the second connection part to move along the displacement area simultaneously by adjusting the forward and reverse rotation of the micro motor.

3. The Bluetooth smart padlock according to claim 1, characterized in that, The movable electromagnetic lock core is embedded with a sensor module for feeding back the position data of the movable electromagnetic lock core in real time.

4. The Bluetooth smart padlock according to claim 1, characterized in that, The first connecting portion comprises: case; An electromagnetic coil, wherein the electromagnetic coil is fixed inside the housing; An electromagnetic lock tongue connected to an armature of the electromagnetic coil; and A second return spring, used for pushing the electromagnetic lock tongue into the locking groove; When the electromagnetic coil is energized, the electromagnetic locking tongue overcomes the spring force and retracts, thereby releasing the movable end.

5. The Bluetooth intelligent padlock according to claim 4, wherein, The electromagnetic locking tongue has a wedge-shaped end portion, and the movable end has a stepped locking groove corresponding to the wedge-shaped end portion, and the wedge-shaped end portion and the stepped locking groove form a locking fit.

6. The Bluetooth smart padlock according to claim 1, characterized in that, The power supply unit comprises: A power supply battery, the power supply battery is electrically connected to the circuit board and is used to supply power to the movable electromagnetic lock cylinder, the displacement drive assembly and the circuit board; and A charging structure, which is one of a USB interface and a type-c interface, is used to connect an external power source for charging the power supply unit.

7. A Bluetooth smart padlock according to claim 6, characterized in that, The circuit board is also integrated with a BMS module, and the control module can send real-time power data and charging status information to an external APP via a Bluetooth module.

8. A Bluetooth smart padlock according to claim 1, characterized in that, The control module has a built-in operation log recording unit for generating a real-time open / close lock operation record.

9. The Bluetooth smart padlock according to claim 1, characterized in that, A control button group is provided at the bottom of the lock body, which is used to trigger the Bluetooth module after being pressed, thereby allowing an external device APP to search for and establish a connection.

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