An NFC padlock

Abstract

The present invention is applicable to the field of padlocks, and provides an NFC padlock, including a lock housing, a lock ring connected to the lock housing, a lock tongue for locking the lock ring, a toggle for driving the lock tongue, an unlocking shaft that can be switched between a locked state and an unlocked state and is used to drive the toggle, an electric drive component that can drive the unlocking shaft to switch to an unlocked state, an energy storage module connected to the electric drive component, and an NFC component connected to the energy storage module, wherein the lock ring, the lock tongue, the toggle, the unlocking shaft, the electric drive component, and the energy storage module are all arranged in the lock housing, and the unlocking shaft is provided with an anti-knock stop column that limits the toggle to move in the unlocking direction in the locked state. The NFC padlock provided by the present invention can not only realize electronic unlocking and mechanical unlocking, but also meet the requirements of small driving resistance, reliable reset, waterproof and dustproof.

Description

Technical Field

[0001] The invention belongs to the field of padlocks, and in particular relates to an NFC padlock. Background Art

[0002] NFC electronic padlock is a new type of electronic lock. In the prior art, the power in the NFC padlock comes from the NFC unlocking device. Since the NFC transmission power supply capability is relatively weak, in this case, the passive padlock must achieve a reliable unlocking function, and the unlocking mechanism must have low driving resistance and reliable reset. On the other hand, when the unlocking mechanism has low driving resistance, the spring force of the locking mechanism is small, which may cause accidental unlocking by knocking, and the locking reliability is poor. Moreover, NFC padlocks generally need to be designed with a mechanical unlocking structure for backup unlocking to prevent electronic unlocking failure of the padlock. Padlocks are mostly used outdoors, and the structural design must meet the requirements of waterproof and dustproof. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide an NFC padlock, which can not only realize electronic unlocking and mechanical unlocking, but also meet the requirements of small driving resistance, reliable reset, waterproof, dustproof and anti-knock accidental unlocking.

[0004] The technical solution of the present invention is: an NFC padlock, comprising a lock housing, a lock ring connected to the lock housing, a lock tongue for locking the lock ring, a toggle member for driving the lock tongue, an unlocking shaft that can be switched between a locked state and an unlocked state and is used to drive the toggle member, an electric drive component that can drive the unlocking shaft to switch to an unlocked state, an energy storage module connected to the electric drive component, and an NFC component connected to the energy storage module, the lock ring, the lock tongue, the toggle member, the unlocking shaft, the electric drive component and the energy storage module are all arranged in the lock housing, and the unlocking shaft is provided with an anti-knock stop column for limiting the movement of the toggle member in the unlocking direction in the locked state.

[0005] As a further improvement of the present technical solution, the two ends of the toggle member are respectively an unlocking end connected to the lock tongue and a driving end connected to the unlocking shaft, and the side of the unlocking shaft has an unlocking protrusion. When the unlocking shaft rotates, the unlocking protrusion squeezes the driving end and causes the unlocking end to move in the unlocking direction.

[0006] As a further improvement of the technical solution, the upper end of the lock housing is provided with two longitudinal grooves for inserting the two ends of the lock ring, and the lock housing is provided with a transverse groove whose two ends are respectively connected to the two longitudinal grooves and used to install the lock tongue, the lock ring has a lock groove, one end of the lock tongue is an insertion end that can be inserted into the lock groove, two lock tongues are provided, and an elastic member is provided between the two lock tongues, and the two ends of the elastic member respectively abut against the other ends of the two lock tongues.

[0007] As a further improvement of the technical solution, a toggle member bracket is provided in or integrally formed with the lock housing, two toggle members are provided, and the middle portion of each toggle member is connected to the toggle member bracket via a rotating shaft.

[0008] As a further improvement of the present technical solution, the unlocking shaft includes a shaft body and an annular boss connected to the bottom of the shaft body, the unlocking protrusion is integrally formed on the outer periphery of the shaft body and is provided with two, the two unlocking protrusions are symmetrically arranged relative to the axis of the shaft body, the outer periphery of the shaft body corresponds to a reset space between the two unlocking protrusions for the driving end to reset to the locking direction, the anti-knock stop column is connected to the annular boss and is opposite to the reset space, when the unlocking shaft rotates to the locked state, the driving end enters the reset space, and the anti-knock stop column stops at the outer peripheral side of the driving end.

[0009] As a further improvement of the technical solution, the sleeve of the unlocking shaft is provided with a reset member for resetting the unlocking shaft.

[0010] As a further improvement of the present technical solution, the NFC padlock further includes a mechanical lock core and an unlocking rod connected to the mechanical lock core and capable of driving the unlocking shaft.

[0011] As a further improvement of the technical solution, the electric drive assembly has a motor drive unit electrically connected to the energy storage module, the NFC assembly includes an NFC shell and an NFC coil arranged on the outer wall of the shell, the NFC coil is arranged in the NFC shell, and the NFC coil can supply power to the energy storage module to rotate the motor drive unit;

[0012] The unlocking shaft has an unlocking boss, and the motor driving unit can drive the unlocking boss to rotate.

[0013] As a further improvement of the present technical solution, the NFC padlock also includes a main PCB board connected to the electric drive assembly and a lock ring PCB assembly for detecting whether the lock ring is in a locked state or an unlocked state, and the lock ring PCB assembly is located below one end of the lock ring.

[0014] As a further improvement of the present technical solution, the NFC padlock also includes a sensing component installed in the lock ring, and the lock ring PCB assembly includes a lock ring PCB board vertically arranged with the main PCB board, and a detection component arranged on the lock ring PCB board.

[0015] The NFC padlock provided by the present invention is provided with an anti-knock stop column to avoid the problem of the NFC padlock being unlocked due to accidental knocking, and the locking is reliable and safe. The NFC padlock can not only realize electronic unlocking and mechanical unlocking, but also meet the requirements of small driving resistance, reliable resetting, and waterproof and dustproof. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a three-dimensional assembly diagram of an NFC padlock provided by an embodiment of the present invention;

[0018] Figure 2 is a side view of an NFC padlock provided by an embodiment of the present invention;

[0019] Figure 3 yes Figure 2 Schematic cross-sectional view of the AA section;

[0020] Figure 4 It is a three-dimensional exploded schematic diagram of an NFC padlock provided by an embodiment of the present invention;

[0021] Figure 5 It is a schematic structural diagram of an unlocking shaft in an NFC padlock provided by an embodiment of the present invention;

[0022] Figure 6 This is a front view of an NFC padlock provided by an embodiment of the present invention;

[0023] Figure 7 yes Figure 6 Schematic cross-sectional view of the BB section.

[0024] Numbers in the figure:

[0025] 1-lock ring, 101-lock groove; 2-lock housing includes 21-lock housing, 22-lock body; 211-longitudinal groove, 212-transverse groove; 3-lock tongue; 4-sliding piece, 41-unlocking end, 42-driving end; 5-unlocking shaft, 51-unlocking protrusion, 52-shaft body, 53-annular boss, 54-reset space, 55-anti-knock block column, 56-unlocking boss; 6-electric drive assembly, 61-motor drive unit; 7-sliding piece bracket; 8-shaft; 9-reset piece; 10-sensing piece; 11-detection piece; 12-lock ring PCB board; 13-mechanical lock core; 14-unlocking rod; 15-NFC assembly; 16-elastic piece; 17-energy storage module; 18-lock ring elastic piece; 19-seal; 20-dust cover. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] It should be noted that the terms “setting” and “connection” should be understood in a broad sense. For example, it can be directly setting or connecting, or it can be indirectly setting or connecting through a central component or a central structure.

[0028] In addition, in the embodiments of the present invention, if there are terms indicating orientation or positional relationships such as "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., they are based on the orientation or positional relationships or conventional placement states or usage states shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure, feature, device or element referred to must have a specific orientation or positional relationship, nor must it be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0029] The various specific technical features and embodiments described in the specific implementation methods can be combined in any suitable manner unless there is any contradiction. For example, different implementation methods can be formed by combining different specific technical features / embodiments. In order to avoid unnecessary repetition, the various possible combinations of the specific technical features / embodiments in the present invention will not be described separately.

[0030] like Figures 1 to 4As shown, an NFC padlock provided by an embodiment of the present invention includes a lock housing 2, a lock ring 1 connected to the lock housing 2, a lock tongue 3 for locking the lock ring 1, a toggle member 4 for driving the lock tongue 3, an unlocking shaft 5 that can be switched between a locked state and an unlocked state and is used to drive the toggle member 4, an electric drive component 6 that can drive the unlocking shaft 5 to switch to an unlocked state, an energy storage module 17 connected to the electric drive component 6, and an NFC component 15 connected to the energy storage module 17, the lock ring 1, the lock tongue 3, the toggle member 4, the unlocking shaft 5, the electric drive component 6 and the energy storage module 17 are all arranged in the lock housing 2, and the unlocking shaft 5 is provided with an anti-knock stop column 55 (such as ) that limits the movement of the toggle member 4 in the unlocking direction in the locked state. Figure 5 As shown in the figure, when the unlocking shaft 5 rotates the set angle to switch to the unlocking state, the anti-knock stop column 55 rotates the set angle (33 degrees in this embodiment), thereby releasing the restriction on the toggle member 4, and the toggle member 4 can move in the unlocking direction. In the NFC padlock provided by the present invention, the unlocking shaft 5 is provided with the anti-knock stop column 55, which can avoid the problem of the NFC padlock being accidentally knocked and unlocked, and has reliable locking and good safety. The electric drive component 6 can realize electronic unlocking, and the unlocking shaft 5 is used as a component of the unlocking mechanism, which has the advantages of small driving resistance and reliable unlocking.

[0031] Furthermore, the two ends of the toggle member 4 are respectively an unlocking end 41 connected to the lock tongue 3 and a driving end 42 connected to the unlocking shaft 5. The side of the unlocking shaft 5 has an unlocking protrusion 51. When the NFC padlock is in a locked state, when the unlocking shaft 5 rotates, the unlocking protrusion 51 squeezes the driving end 42 and causes the unlocking end 41 to move in the unlocking direction. In an embodiment of the present invention, the driving end 42 and the unlocking end 41 can be connected to both sides of the rotating shaft 8, and the angle between the driving end 42 and the unlocking end 41 can be an obtuse angle or a right angle; the unlocking protrusion 51 is an arc-shaped protrusion arranged on the outer peripheral side of the unlocking rotating shaft 5, and the arc surface of the unlocking protrusion 51 can squeeze the driving end 42 and make the unlocking end 41 move in the unlocking direction, with small driving resistance and reliable unlocking; in other embodiments, the unlocking protrusion 51 can also be an inclined surface or a curved surface arranged on the outer peripheral side of the unlocking rotating shaft 5, which can also effectively squeeze the driving end 42 and make the unlocking end 41 move in the unlocking direction.

[0032] Furthermore, the upper end of the lock housing 2 is provided with two longitudinal grooves 211 for inserting the two ends of the lock ring 1, and the lock housing 2 is provided with a transverse groove 212 for installing the lock tongue 3, and the two ends of the transverse groove 212 are respectively connected to the two longitudinal grooves 211, and the lock ring 1 has two ends that can be inserted into the two longitudinal grooves 211 respectively, and the opposite sides of the two ends are provided with lock grooves 101, one end of the lock tongue 3 is an insertion end that can be inserted into the lock groove 101, and two lock tongues 3 are provided, and an elastic member 16 is provided between the two lock tongues 3, and the two ends of the elastic member 16 respectively abut against the other ends of the two lock tongues 3. In an embodiment provided by the present invention, a lock ring elastic member 18 is further provided at one end of the lock ring 1. When unlocking, the unlocking protrusion 51 squeezes the driving end 42, and makes the unlocking ends 41 of the two lock tongues 3 squeeze the elastic member 16. The lock tongue 3 close to the lock groove 101 side slides in the direction of compressing the elastic member 16, so that one end of the lock tongue 3 exits the lock groove 101. The lock ring 1 pops up upward due to the action of the lock ring elastic member 18, and unlocking is reliable. The lock housing 2 in this embodiment includes a lock housing 21 and a lock body 22, and the transverse groove 212 and the longitudinal groove 211 are both arranged on the lock housing 21.

[0033] Further, a toggle bracket 7 is provided in or integrally formed with the lock housing 2, two toggle members 4 are provided, and the middle part of each toggle member 4 is connected to the toggle bracket 7 through a rotating shaft 8. In an embodiment provided by the present invention, a transverse groove is provided at the upper end of the toggle bracket 7 for installing the lock tongue 3 and the elastic member 16, and the toggle bracket 7 is provided in the lock housing 2 and inserted into the transverse groove 212, so that the structure of the NFC padlock is more stable and easy to assemble.

[0034] Furthermore, if Figures 3 to 5As shown, the unlocking shaft 5 includes a shaft body 52 and an annular boss 53 connected to the bottom of the shaft body 52, the unlocking protrusion 51 is integrally formed on the outer periphery of the shaft body 52 and is provided with two, the two unlocking protrusions 51 are symmetrically arranged relative to the axis of the shaft body 52, that is, the two unlocking protrusions 51 are arranged 180 degrees apart along the circumference of the shaft body 52, the outer periphery of the shaft body 52 corresponds to the reset space 54 between the two unlocking protrusions 51 for the driving end 42 to reset to the locking direction, the anti-knock stop column 55 is connected to the annular boss 53 and is opposite to the reset space 54, when the unlocking shaft 5 is rotated to the locked state, the driving end 42 enters the reset space 54, at this time, the anti-knock stop column 55 stops at the outer peripheral side of the driving end 42, so that the toggle member 4 is reliably limited. Along the circumferential direction of the shaft body 52, the interval between the anti-knock stop column 55 and the unlocking protrusion 51 is 90 degrees. In an embodiment provided by the present invention, the anti-knock baffle column 55 has a stop bevel, the reset space 54 is the outer periphery of the shaft body 52 corresponding to the unlocking bevel arranged between the two unlocking protrusions 51, and the driving end 42 has a spherical surface. When unlocking, the spherical surface slides along the unlocking bevel in the locking direction, the driving resistance is small, and the unlocking is smooth without jamming; the anti-knock baffle column 55 has a stop bevel, and the toggle member 4 has a side surface that can be pressed against the stop bevel. When locking, when the lock body is knocked, due to the limiting effect of the stop bevel, the lock tongue 3 cannot retract in the unlocking direction, which can effectively prevent unlocking due to accidental knocking, and the locking is more reliable.

[0035] For further information, please refer to Figure 3 The unlocking shaft 5 is sleeved with a reset member 9 for resetting the unlocking shaft 5. As an optional embodiment, the reset member 9 is a torsion spring, and the unlocking shaft 5 is rotated and reset under the action of the torsion spring force, and the reset is reliable; the outer periphery of the shaft body 52 of the unlocking shaft 5 is provided with a hook groove, and the end of the torsion spring has a hook part, which can extend into the hook groove to hook the inner side of the shaft body 52 to prevent the torsion spring from moving, and the connection is reliable.

[0036] Furthermore, the NFC padlock also includes a mechanical lock core 13 disposed in the lock housing 2 and an unlocking rod 14 connected to the mechanical lock core 13 and capable of driving the unlocking shaft 5. In the embodiment provided by the present invention, the bottom surface of the unlocking shaft 5 is provided with an arc groove for the unlocking rod 14 to rotate, the top of the mechanical lock core 13 is provided with an eccentric blind hole, and the two ends of the unlocking rod 14 extend into the arc groove and the eccentric blind hole respectively; the NFC padlock is provided with a mechanical lock core 13 structure for mechanical unlocking, which can be used for backup unlocking when the electronic unlocking of the padlock fails; the bottom of the mechanical lock core 13 is provided with a dust cover 20 and a seal 19, which can be dustproof and waterproof, and is suitable for outdoor use.

[0037] Furthermore, if Figure 6 and Figure 7 As shown, the electric drive assembly 6 is a DC reduction motor, and the output shaft of the DC reduction motor is connected to a motor drive unit 61 electrically connected to the energy storage module 17. The NFC assembly includes an NFC shell and an NFC coil arranged on the outer wall of the shell, and the NFC coil is arranged in the NFC shell. The NFC coil can supply power to the energy storage module 17 to rotate the motor drive unit 61; the unlocking shaft 5 has an unlocking boss 56, and the motor drive unit 61 can drive the unlocking boss 56 to rotate. Specifically, the unlocking boss 56 is arranged on the side of the unlocking shaft 5, and the motor drive unit 61 can push the unlocking boss 56 to rotate, so that the unlocking shaft 5 rotates to drive the driving end 42 to slide along the unlocking inclined surface, and then one end of the lock tongue 3 can exit the lock slot 101. The NFC assembly 15 includes an NFC shell and an NFC coil arranged on the outer wall of the shell, and the NFC coil is arranged in the NFC shell. The NFC coil can supply power to the energy storage module 17, so that the DC reduction motor drives the motor drive unit 61 to rotate. In the embodiment provided by the present invention, the energy storage module 17 is an energy storage capacitor (super capacitor), and of course it can also be other energy storage units as long as it can provide sufficient electrical energy for unlocking the NFC padlock.

[0038] Furthermore, the NFC padlock further includes a main PCB board connected to the electric drive assembly 6 and a lock ring PCB assembly for detecting whether the lock ring 1 is in a locked state or an unlocked state, and the lock ring PCB assembly is located below one end of the lock ring 1; the NFC padlock further includes a sensing member 10 installed on the lock ring 1, and the lock ring PCB assembly includes a lock ring PCB board 12 vertically arranged with the main PCB board, and a detection member 11 arranged on the lock ring PCB board. Specifically, in this embodiment, the sensing member 10 is a magnetic element, and the detection member 11 is a Hall element, which can be used to detect whether the magnetic element is far away or close, so as to sense whether the lock ring 1 pops up, that is, to obtain whether the NFC padlock is in an unlocked state or a locked state.

[0039] The locking process of the NFC padlock in the embodiment provided by the present invention is as follows: when the NFC padlock is in the unlocked state, the lock ring 1 is in the pop-up state; at this time, the lock ring 1 is pressed, and since the upper edge of the end of the lock tongue 3 has a bevel, when the lock ring 1 moves downward, it presses on the bevel of the lock tongue 3 to retract the lock tongue 3 inward; when the lock ring 1 is pressed to the bottom, the lock tongue 3 pops out under the action of the elastic member, that is, the lock tongue 3 slides in the locking direction until one end of the lock tongue 3 is stuck in the lock groove 101, and the unlocking shaft 5 rotates and resets under the action of the torsion spring force to complete the locking operation.

[0040] The unlocking process of the NFC padlock described in the embodiment provided by the present invention is as follows: an electronic unlocking device such as a mobile phone with NFC function is brought close to the NFC antenna housing, and the NFC coil of the mobile phone or other electronic unlocking device is inductively coupled to the NFC coil of the electronic padlock. After circuit identification and software judgment, the NFC coil of the mobile phone or the electronic unlocking device inductively supplies power to the NFC coil in the lock, and the power is stored in the energy storage capacitor through the circuit board. After the energy storage capacitor is full, power is supplied to the electric drive component 6, and the electric drive component 6 drives the motor drive part 61 to turn the unlocking shaft 5, so that the unlocking shaft 5 rotates a certain angle. When the unlocking shaft 5 rotates, the unlocking protrusion 51 squeezes the spherical surface of the driving end 42, so that the toggle member 4 can rotate, and the unlocking end 41 drives the lock tongue 3 to retract, and the lock ring 1 is no longer stuck in the lock groove 101 by the lock tongue 3. The lock ring 1 pops up upward under the action of the lock ring elastic member 18, thereby realizing the unlocking operation.

[0041] After unlocking, since the lock ring 1 pops out, the lock ring 1 detects the induction change of the Hall element of the PCB board to determine that the NFC padlock has been unlocked. At this time, the main PCB board controls the motor to stop rotating, and the unlocking is completed.

[0042] An NFC padlock provided in an embodiment of the present invention is provided with an electric drive component 6 to realize electronic unlocking, and the unlocking mechanism is provided with an unlocking shaft 5, which has small driving resistance and reliable unlocking; the NFC padlock is provided with a mechanical lock core 13 structure for mechanical unlocking, which can be used for backup unlocking when the electronic unlocking of the padlock fails, thereby avoiding damage to the lock body caused by prying; and the unlocking shaft 5 is provided with an anti-knock blocking column 55, which can avoid the NFC padlock being unlocked due to accidental knocking, and the locking is reliable, safe and easy to install, and it can be waterproof and dustproof and has good durability.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An NFC padlock, characterized in that: It comprises a lock housing, a lock ring connected to the lock housing, a lock tongue for locking the lock ring, a toggle member for driving the lock tongue, an unlocking shaft that can be switched between a locked state and an unlocked state and is used to drive the toggle member, an electric drive component that can drive the unlocking shaft to switch to an unlocked state, an energy storage module connected to the electric drive component, and an NFC component connected to the energy storage module, wherein the lock ring, the lock tongue, the toggle member, the unlocking shaft, the electric drive component, and the energy storage module are all arranged in the lock housing, and the unlocking shaft is provided with an anti-knock stop column that limits the toggle member from moving in an unlocking direction in the locked state; The two ends of the toggle member are respectively an unlocking end connected to the lock tongue and a driving end connected to the unlocking shaft, and the side of the unlocking shaft has an unlocking protrusion, and when the unlocking shaft rotates, the unlocking protrusion squeezes the driving end and makes the unlocking end move in the unlocking direction; The unlocking shaft includes a shaft body and an annular boss connected to the bottom of the shaft body, the unlocking protrusion is integrally formed on the outer periphery of the shaft body and is provided with two, the two unlocking protrusions are symmetrically arranged relative to the axis of the shaft body, the outer periphery of the shaft body corresponds to a reset space between the two unlocking protrusions for the driving end to reset to the locking direction, the anti-knock stop column is connected to the annular boss and is opposite to the reset space, when the unlocking shaft rotates to the locked state, the driving end enters the reset space, the anti-knock stop column stops at the outer peripheral side of the driving end, along the circumferential direction of the shaft body, the anti-knock stop column and the unlocking protrusion are spaced 90 degrees apart.

2. The NFC padlock according to claim 1, characterized in that: The upper end of the lock housing is provided with two longitudinal grooves for inserting the two ends of the lock ring, and the lock housing is provided with a transverse groove whose two ends are respectively connected with the two longitudinal grooves and used for installing the lock tongue. The lock ring has a lock groove, and one end of the lock tongue is an insertion end that can be inserted into the lock groove. Two lock tongues are provided, and an elastic member is provided between the two lock tongues. The two ends of the elastic member respectively abut against the other ends of the two lock tongues.

3. The NFC padlock according to claim 2, characterized in that: A toggle member bracket is arranged in or integrally formed with the lock housing, two toggle members are arranged, and the middle part of each toggle member is connected to the toggle member bracket through a rotating shaft.

4. The NFC padlock according to any one of claims 1 to 3, characterized in that: The sleeve of the unlocking rotating shaft is provided with a resetting member for resetting the unlocking rotating shaft.

5. The NFC padlock according to any one of claims 1 to 3, characterized in that: The NFC padlock further includes a mechanical lock core disposed in the lock housing and an unlocking rod connected to the mechanical lock core and capable of driving the unlocking shaft.

6. The NFC padlock according to any one of claims 1 to 3, characterized in that: The electric drive assembly has a motor drive unit electrically connected to the energy storage module, and the NFC assembly includes an NFC shell and an NFC coil disposed on the outer wall of the housing, wherein the NFC coil is disposed in the NFC shell, and the NFC coil can supply power to the energy storage module to enable the motor drive unit to rotate; The unlocking shaft has an unlocking boss, and the motor driving unit can drive the unlocking boss to rotate.

7. The NFC padlock according to claim 6, characterized in that: The NFC padlock also includes a main PCB board connected to the electric drive assembly and a lock ring PCB assembly for detecting whether the lock ring is in a locked state or an unlocked state, and the lock ring PCB assembly is located below one end of the lock ring.

8. The NFC padlock according to claim 7, characterized in that: The NFC padlock further includes a sensing element installed in the lock ring, and the lock ring PCB assembly includes a lock ring PCB board vertically arranged with respect to the main PCB board, and a detection element arranged on the lock ring PCB board.

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