Electronic lock

Abstract

The application provides an electronic lock, and relates to the technical field of locks, which comprises a first base, a first handle, a clutch mechanism and a latch mechanism. The clutch mechanism comprises a movable piece, an electric drive device, a clutch pin, a first buffer piece and a second buffer piece. The electric drive device is in transmission connection with the movable piece to drive the movable piece to move. The clutch pin is movably connected to the movable piece to move with the movable piece to correspond to the insertion or disengagement of the latch mechanism. The first buffer piece is elastically connected between the transmission assembly and the movable piece. The second buffer piece is elastically connected between the movable piece and the clutch pin. The electronic lock has the beneficial effects that the clutch mechanism can convert the driving force output by the electric drive device into the first buffer force of the first buffer piece and the second buffer force of the second buffer piece, effectively avoids the problem of motor lock caused by the blockage of the movement of the movable piece or the clutch pin, reduces the failure rate of the electric drive device and the hard damage of the transmission structure, and significantly improves the operation stability, reliability and service life of the electronic lock.

Description

Technical Field

[0001] This application relates to the field of lock technology, and in particular to an electronic lock with a two-stage buffer structure. Background Technology

[0002] In electronic locks, the clutch mechanism enables the switching between mechanical linkage and non-linkage states between the handle and the latch mechanism. It is a key component for electronic lock control. All types of electronic locks, regardless of whether they are used in residential or commercial settings, for entrance doors or interior doors, and regardless of whether they use a lever, handle, or push-pull unlocking method, employ a clutch mechanism. For example, the electronic lock and its clutch mechanism disclosed in Chinese Patent Publication No. CN108798236B use a motor to drive a drive component to rotate, which in turn causes the clutch component to reciprocate relative to the base, thus switching the linkage state between the clutch component and the latch mechanism to establish or disengage the transmission connection between the handle and the latch mechanism.

[0003] The clutch mechanisms used in existing electronic locks typically employ a direct-drive motor to drive the transmission components, which in turn act on the corresponding clutch element to achieve clutch engagement / disengagement switching. For example, in the aforementioned patent, the motor drives a gear to rotate relative to the base via a first and second transmission component. The gear transmission pair formed by the first and second transmission components has a rigid transmission connection with the drive gear. In actual use, if the rotation of the drive gear relative to the gear transmission pair is obstructed, and the motor cannot disengage or stop, it will inevitably cause motor overload, high temperature, and malfunctions due to motor stalling. This will prevent the electronic lock from functioning properly and will also cause physical damage to the transmission structure between the motor and the clutch element, severely affecting the operational stability, reliability, and service life of the electronic lock. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides an improved electronic lock, resolving the issues of motor stalling, overload, and high-temperature failures caused by the rigid transmission connection between the motor and clutch in existing electronic locks, which also leads to hard damage to the transmission structure. The electronic lock provided in this application features a two-stage buffer structure in its clutch mechanism. The first buffer alleviates the resistance between the transmission assembly and the moving parts, while the second buffer alleviates the resistance between the clutch pin and the moving parts. Within the buffer limits of the first and second buffers, the driving force output by the electric drive device is converted into the first buffer storage force of the first buffer and the second buffer storage force of the second buffer. This effectively avoids motor stalling caused by obstructed movement of the moving parts or clutch pin, reduces the failure rate of the electric drive device and hard damage to the transmission structure, and significantly improves the operational stability, reliability, and service life of the electronic lock.

[0005] The technical solution adopted by this application to solve its technical problem is as follows: An electronic lock is provided, including a first base, a first handle movably connected to the outside of the first base, a clutch mechanism disposed in the first handle, and a latch mechanism linked to the clutch mechanism. The first handle can drive the clutch mechanism to rotate around a central axis relative to the first base; wherein, the clutch mechanism has a disengaged position and an engaged position correspondingly disposed along a preset direction, and the clutch mechanism includes:

[0006] The movable component moves back and forth between the clutch position and the engagement position in a preset direction relative to the first handle;

[0007] An electric drive device is connected to the moving part via a transmission assembly to drive the moving part to move;

[0008] The clutch pin is movably connected to the movable part in the preset direction and can move with the movable part to engage or disengage from the latch mechanism.

[0009] A first buffer is elastically connected between the transmission assembly and the movable component to form a first buffer force storage between the transmission assembly and the movable component when the movement of the movable component is obstructed relative to the transmission assembly.

[0010] The second buffer is elastically connected between the movable member and the clutch pin to form a second buffer force between the movable member and the clutch pin when the movement of the clutch pin relative to the movable member is obstructed.

[0011] In some embodiments, the transmission assembly includes a drive shaft, which is rotatably connected to the first handle along the preset direction and is connected to the electric drive device via a transmission pair, and at least a portion of the drive shaft is provided with a helical guide structure.

[0012] The movable component is at least partially movably connected to the drive shaft and reciprocates along the axial direction of the drive shaft; the helical guide structure is located in the movable component;

[0013] The first buffer includes a first helical spring, which is elastically housed in the movable member and movably sleeved on the drive shaft, and the first helical spring is threadedly connected to the helical guide structure.

[0014] In some embodiments, the device further includes a push-receiving structure and a mechanical lock cylinder. The push-receiving structure is fixedly connected to the movable member. The mechanical lock cylinder is fixedly disposed in the first handle and perpendicular to the central axis. The actuating end of the mechanical lock cylinder is connected to an eccentric lever that abuts against the push-receiving structure. By rotating the eccentric lever against the push-receiving structure, the movable member is moved to the engagement position through the push-receiving structure, and the first buffer member is compressed during the movement to form a first buffer force.

[0015] In some embodiments, the latch mechanism includes a latch and a latch drive assembly. The latch is disposed inside the first base and perpendicular to the central axis. The latch drive assembly is rotatably disposed between the first base and the first handle about the central axis, and one end of the latch drive assembly is connected to the latch so as to drive the latch to extend and retract by rotation.

[0016] In some embodiments, the latch actuation assembly includes a transmission rod and a drive unit, wherein:

[0017] The transmission rod is arranged along the central axis and is at least partially connected to the latch;

[0018] One end of the drive unit is fixedly connected to the transmission rod, and the other end corresponds to the clutch mechanism. It is provided with at least one clutch hole that engages with the clutch pin. The drive unit can rotate relative to the first handle.

[0019] In some embodiments, the latch includes a latch body, a latch tongue movably connected to the latch body, and a telescopic mechanism connected between the latch body and the latch tongue, wherein the transmission rod is inserted into the latch body and is throttle-connected to the telescopic mechanism.

[0020] In some embodiments, the system further includes a second base and a second handle movably connected to the outside of the second base. The second handle is linked to the latch mechanism and can rotate relative to the second base about the central axis. The second handle is provided with a power supply module for power supply.

[0021] In some embodiments, the device further includes a controller and an instruction information module electrically connected to the controller for editing and / or storing and / or acquiring and / or identifying unlocking instructions; the controller is electrically connected to the electric drive device to control the operation of the electric drive device based on the unlocking instructions.

[0022] In some embodiments, the instruction information module includes a fingerprint module for fingerprint password acquisition and / or a keyboard module for local password acquisition and / or a wireless communication module for cloud password acquisition and / or an RFID card reader module for radio frequency password acquisition.

[0023] In some embodiments, the keyboard module is disposed on the outer end face of the first handle, and the fingerprint module is disposed on the upper side of the first handle.

[0024] The beneficial effects of this application are as follows: In the electronic lock provided by this application, the movable part of the clutch mechanism is movably set in the first handle, the clutch pin is movably connected to the movable part in a preset direction, the electric drive device is connected to the movable part through the transmission assembly, the first buffer is elastically connected between the transmission assembly and the movable part, and the second buffer is elastically connected between the movable part and the clutch pin. This structural design makes a first-level elastic transmission connection structure formed between the transmission assembly and the movable part, and a second-level elastic transmission connection structure formed between the movable part and the clutch pin.

[0025] Compared to the rigid transmission connection structure between the motor and clutch in existing designs, the electronic lock provided in this application forms a two-stage elastic connection structure between the electric drive unit and the moving parts and clutch pin, providing a two-stage buffering effect. In actual use, whether the movement of the clutch pin is obstructed relative to the moving parts, the movement of the moving parts is obstructed relative to the transmission components, or both the moving parts and the clutch pin are obstructed, the motor of the electric drive unit can operate normally within the buffering limits of the corresponding buffer components. This converts the driving force output by the motor into the buffering and storage force of the corresponding buffer components, effectively avoiding problems such as motor stalling caused by obstructed movement of the moving parts or clutch pin, leading to motor overload, high-temperature failures, etc., thus reducing the failure rate of the electric drive unit. It also avoids the problem of rigid damage to the transmission components caused by motor stalling, reducing the failure rate of the clutch mechanism, and significantly improving the stability and reliability of the electronic clutch control, thereby improving the operational stability, reliability, and service life of the electronic lock. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0027] Figure 1 This is a schematic diagram of the overall structure of the electronic lock of this application. The electronic lock includes a first base, a first handle, a clutch mechanism, a mechanical lock cylinder, a bolt, a bolt drive assembly, a second base, and a second handle.

[0028] Figure 2 This is an exploded structural diagram of the first base, first handle, clutch mechanism, mechanical lock cylinder, latch, and latch drive assembly in the electronic lock of this application;

[0029] Figure 3This is a cross-sectional schematic diagram of the structure of the first base, first handle, clutch mechanism, mechanical lock cylinder, and latch drive assembly in the electronic lock of this application;

[0030] Figure 4 This is a schematic diagram of the assembly structure of the drive unit in the first rotating shaft seat, clutch cover and latch drive assembly of the first handle;

[0031] Figure 5 This is a schematic diagram of the internal structure of the clutch mechanism in the electronic lock of this application;

[0032] Figure 6 This is an exploded view of the clutch mechanism in the electronic lock of this application;

[0033] Figure 7 This is a schematic diagram of the overall structure of the moving parts of the clutch mechanism in the electronic lock of this application;

[0034] Figure 8 This is an exploded view of the structure of the second base and the second handle in the electronic lock of this application;

[0035] Figure 9 This is a schematic diagram of the circuit principle of the electronic lock in this application.

[0036] Wherein: A. Central axis, 1. First base, 11. First retaining ring, 12. First retaining cover, 2. First handle, 21. First rotating shaft seat, 22. First spherical shell, 23. Clutch seal, 231. Pin through hole, 24. Turntable cavity, 25. Lock hole cover plate, 3. Clutch mechanism, 31. Clutch housing, 311. Clutch pin telescopic hole, 312. Guide groove, 32. Moving part, 321. First connecting part, 3211. First cavity, 3212. First through hole, 322. Push structure, 323. Second connecting part, 3231. Second cavity, 3232. Second through hole, 33. Electric drive device, 34. Clutch pin, 341. Limiting part, 35. First buffer, 351. First coil spring, 36. Second buffer, 361. Second coil spring, 37. Drive Shaft, 371. Helical guide structure, 38. Drive gear, 39. Driven gear, 4. Latch, 41. Latch body, 42. Latch tongue, 5. Latch drive assembly, 51. Transmission rod, 52. Drive unit, 521. Drive disc, 522. Clutch hole, 53. Torsion spring assembly, 6. Mechanical lock cylinder, 61. Eccentric lever, 62. Key, 7. Second base, 71. Second retaining ring, 72. Second retaining cover, 8. Second handle, 81. Second rotating shaft seat, 811. Battery compartment, 812. Communication compartment, 82. Second ball shell, 83. Second PCB board, 9. Power supply module, 10. Controller, 100. Command information module, 101. Fingerprint module, 102. Keyboard module, 103. Wireless communication module, 104. RFID card reader module, 105. Data storage module. Detailed Implementation

[0037] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0038] Please see Figures 1 to 2 This application provides an electronic lock, including a first base 1 fixedly mounted on one side of the outer surface of a door panel (not shown), a first handle 2 movably connected to the outside of the first base 1, a clutch mechanism 3 disposed in the first handle 2, and a latch mechanism (not shown) linked to the clutch mechanism 3. The first handle 2 can drive the clutch mechanism 3 to rotate around the central axis A relative to the first base 1, so that when the clutch mechanism 3 is linked to the latch mechanism, the latch mechanism can be unlocked by turning the first handle 2.

[0039] Please see Figures 3 to 7 Specifically, the clutch mechanism 3 has a clutch position and an engagement position (not a solid structure, not shown in the figure) correspondingly arranged along a preset direction, and the preset direction is the same as the extension direction of the central axis A. The clutch mechanism 3 includes a movable member 32, an electric drive device 33, a clutch pin 34, a first buffer member 35, and a second buffer member 36. The movable member 32 is movably disposed in the first handle 2 and can reciprocate between the clutch position and the engagement position relative to the first handle 2 along the preset direction. The electric drive device 33 is fixedly disposed in the first handle 2 and is transmittedly connected to the movable member 32 through a transmission assembly (not shown) to drive the movable member 32 to move. The clutch pin 34 is movably connected to the movable member 32 along the preset direction, so that the clutch pin 34 can extend and retract with the movable member 32 along the preset direction, and the clutch pin 34 can move relative to the movable member 32 in the preset direction. When the clutch pin 34 extends, it can be inserted into the latch mechanism and linked with it. When the clutch pin 34 retracts, it is disengaged from the latch mechanism. The first buffer 35 is elastically connected between the transmission assembly and the movable member 32, so as to form a first buffer force between the transmission assembly and the movable member 32 when the movement of the movable member 32 is obstructed relative to the transmission assembly. The second buffer 36 is elastically connected between the movable member 32 and the clutch pin 34, and can automatically drive the clutch pin 34 to elastically push it out towards the latch mechanism side under normal conditions, so as to form a second buffer force between the movable member 32 and the clutch pin 34 when the movement of the clutch pin 34 is obstructed relative to the movable member 32.

[0040] To facilitate explanation and understanding of the technical solution of this application, the setting direction (i.e., the preset direction) of the central axis A is defined as the X direction, and the two ends of the X direction are defined as front and back. The width direction of the first handle 2 is defined as the Y direction, and the two ends of the Y direction are defined as left and right. The height direction of the first handle 2 is defined as the Z direction, and the two ends of the Z direction are defined as up and down. The clutch pin 34 extends forward along the X direction and retracts backward.

[0041] In actual use, when the movable part 32 moves forward along the X direction (i.e., the preset direction) to the engagement position under the drive of the electric drive device 33 and the transmission assembly, it causes the clutch pin 34 to extend towards the latch mechanism side, so that the clutch pin 34 can engage with the latch mechanism and realize the linkage connection between the clutch mechanism 3 and the latch mechanism. At this time, the user can manually turn the first handle 2 to drive the clutch mechanism 3 to rotate relative to the first base 1, thereby driving the latch mechanism to perform the unlocking action through the clutch pin 34, realizing electronic unlocking.

[0042] When the movable part 32 moves in the opposite direction along the X direction to the clutch position under the drive of the electric drive device 33 and the transmission assembly, it drives the clutch pin 34 to retract, so that the clutch pin 34 disengages from the latch mechanism, releasing the linkage between the clutch mechanism 3 and the latch mechanism. At this time, the latch mechanism automatically locks, and the first handle 2 is released from the linkage between the first handle 2 and the latch mechanism. Even if the user manually turns the first handle 2, the latch mechanism cannot be unlocked through the clutch mechanism 3, so as to ensure the normal locking of the electronic lock.

[0043] The electronic lock provided in this application has a clutch mechanism 3 in which the movable part 32 is movably disposed in the first handle 2, the clutch pin 34 is movably connected to the movable part 32 in a preset direction, the electric drive device 33 is connected to the movable part 32 through a transmission assembly, the first buffer 35 is elastically connected between the transmission assembly and the movable part 32, and the second buffer 36 is elastically connected between the movable part 32 and the clutch pin 34. This structural design forms a first-level elastic transmission connection structure between the transmission assembly and the movable part 32, and a second-level elastic transmission connection structure between the movable part 32 and the clutch pin 34.

[0044] Compared to the rigid transmission connection structure between the motor and clutch in existing designs, the electronic lock provided in this application forms a two-stage elastic connection structure between the electric drive unit 33, the movable part 32, and the clutch pin 34, providing a two-stage buffering effect. During electronic clutch control, the clutch pin 34 may not be properly aligned and engaged with the latch mechanism due to external obstacles caused by the handle not rotating fully. The extension action of the clutch pin 34 is hindered compared to the movable part 32, while the electric drive unit 33 continues to output driving force. During this process, the driving force output by the electric drive unit 33 is transmitted to the second buffer 36 through the transmission component, the first buffer 35, and the movable part 32, and is ultimately converted into the second buffer storage force generated by the compression deformation of the second buffer 36. When the second buffer 36 reaches its buffer limit, external resistance acts directly on the moving part 32 through the clutch pin 34, causing the movement of the moving part 32 to be hindered relative to the transmission assembly. At this time, the driving force output by the electric drive unit 33 is transmitted to the first buffer 35 through the transmission assembly and is ultimately converted into the first buffer storage force generated by the compression deformation of the first buffer 35. Before the first buffer 35 reaches its buffer limit, the electric drive unit 33 can operate normally and continuously output driving force, converting the driving force into two-stage buffer storage force of the first buffer 35 and the second buffer 36.

[0045] Therefore, by adopting the technical solution of this invention, whether the movement of the clutch pin 34 is obstructed relative to the moving part 32, the movement of the moving part 32 is obstructed relative to the transmission component, or the movement of both the moving part 32 and the clutch pin 34 is obstructed, the motor of the electric drive device 33 can operate normally within the buffer limit of the corresponding buffer component, and convert the driving force output by the motor into the buffer storage force of the corresponding buffer component. This effectively avoids problems such as motor stalling caused by obstruction of movement of the moving part 32 or the clutch pin 34, which in turn leads to motor overload, high temperature failure, etc., reducing the failure rate of the electric drive device 33. At the same time, it can also avoid the problem of hard damage to the transmission component caused by motor stalling, reducing the failure rate of the clutch mechanism 3, significantly improving the stability and reliability of the electronic clutch control of the clutch mechanism 3, and thus improving the operational stability, reliability and service life of the electronic lock.

[0046] In addition, after the first handle 2 is rotated into place or the external obstruction is removed, the first and second buffer forces generated by the deformation of the first buffer 35 and the second buffer 36 are released, which can further promote the movement of the moving part 32 and the clutch pin 34, thereby improving the efficiency of the electronic clutch control of the clutch mechanism 3 and ensuring the clutch control effect.

[0047] The electronic lock provided in this application has an electric drive device 33 for its clutch mechanism 3, which can be either a drive motor or an electric push rod. When the electric drive device 33 is a drive motor, the transmission component and the movable part 32 have a rotational-to-linear motion structure, allowing the movable part 32 to move relative to the transmission component along a preset direction, thereby converting the rotational motion of the drive motor into the linear motion of the movable part 32 along the preset direction. When the electric drive device 33 is an electric push rod, the movable part 32 can be driven to move linearly along the preset direction through the transmission component, resulting in a simpler structure, which will not be further illustrated here.

[0048] Please see Figures 2 to 4 In one specific embodiment, the first base 1 includes a first retaining ring 11 and a first retaining cover 12 that are fastened together, and the central axis of both coincides with the central axis A. The first handle 2 includes a first pivot seat 21 and a first spherical shell 22. The first pivot seat 21 is rotatably connected to the first retaining cover 12 and the first retaining ring 11 along the central axis A, and the front part of the first pivot seat 21 extends into the cavity formed between the first retaining ring 11 and the first retaining cover 12. The rear part of the first pivot seat 21 is located outside the first retaining ring 11 and is fixedly connected to the first spherical shell 22. The clutch mechanism 3 is disposed in the cavity formed between the first spherical shell 22 and the rear part of the first pivot seat 21. The clutch pin 34 is disposed facing the first pivot seat 21 and is located outside the central axis A.

[0049] Preferably, the first handle 2 also includes a clutch cover 23, which is located at the front of the first spherical shell 22 and fixedly connected to the rear of the first rotating shaft seat 21. A turntable cavity 24 is formed between the clutch cover 23 and the first rotating shaft seat 21. The clutch cover 23 is provided with a pin through hole 231 for the clutch pin 34 to pass through and extend into the turntable cavity 24.

[0050] Please see Figures 1 to 2 Preferably, the latch mechanism includes a latch 4 and a latch drive assembly 5 (not shown) for driving the latch 4 to extend and retract. The latch 4 is disposed in the door panel inside the first base 1 along the Y direction and perpendicular to the central axis A. Its end has a latch tongue 42 that can extend and retract along the Y direction to lock or unlock by correspondingly inserting into or disengaging from the corresponding keyhole on the door frame (not shown). The latch drive assembly 5 is rotatably disposed between the first base 1 and the first handle 2 with the central axis A as the rotation center line. The front end of the latch drive assembly 5 is connected to the latch 4 so as to drive the latch tongue 42 of the latch 4 to extend and retract by rotation.

[0051] Please see Figures 2 to 4 Preferably, the latch drive assembly 5 includes a drive rod 51 and a drive part 52, wherein the drive rod 51 is arranged along the central axis A and is at least partially connected to the latch 4. The drive rod 51 is a non-cylindrical rod, preferably a quadrangular prism structure, and can rotate about the central axis A to drive the latch tongue 42 at the end of the latch 4 to extend and retract during rotation.

[0052] The front end of the drive unit 52 passes sequentially through the middle of the first rotating shaft seat 21, the first retaining ring 11, and the first retaining cover 12 along the central axis A, and is sleeved on and fixedly connected to the rear end of the transmission rod 51. A drive disk 521 is fixedly provided on the rear part of the drive unit 52 away from the transmission rod 51. The drive disk 521 is rotatably housed in the turntable cavity 24 formed between the first rotating shaft seat 21 and the clutch cover 23, and a plurality of clutch holes 522 are provided through the drive disk 521 to engage with the clutch pin 34.

[0053] The drive unit 52 can rotate within a certain angle range relative to the first handle 2 to ensure that when the clutch mechanism 3 is disengaged from the latch mechanism, rotating the first handle 2 will not drive the drive unit and transmission rod to rotate through the first rotating shaft seat and clutch cover, thus ensuring the normal locking of the electronic lock.

[0054] It should be noted that the clutch hole 522 is located on the outside of the central axis A to ensure that when the first handle 2 rotates, the clutch pin 34 can drive the drive disc 521 to rotate circumferentially, and then drive the transmission rod 51 to rotate around the central axis A through the drive part 52.

[0055] Please see Figures 2 to 4 In one specific embodiment, the latch drive assembly 5 further includes a torsion spring assembly 53. The torsion spring assembly 53 is disposed between the first base 1 and the first handle 2, preferably located in the cavity formed between the first retaining ring 11 and the first cover 12, and elastically engaged with the front end of the first rotating shaft seat 21 extending into the first base 1, so as to form an elastic fit between the first base 1 and the first handle 2, and elastically drive the first handle 2 to rotate to the reset, ensuring that after the user manually screws the first handle 2 and releases it, the first handle 2 can automatically reset under the elastic force of the torsion spring assembly 53.

[0056] Please see Figure 2 Preferably, the latch 4 includes a latch body 41, a latch tongue 42 movably connected to the latch body 41, and a telescopic mechanism (not shown) connected between the latch body 41 and the latch tongue 42. The transmission rod 51 is at least partially inserted into the latch body 41 and is connected to the telescopic mechanism for transmission, so as to drive the telescopic mechanism to move the latch tongue 42 along the Y direction by rotation.

[0057] Preferably, the telescopic mechanism elastically drives the locking tongue 42 to extend under normal conditions, and at the same time can elastically drive the transmission rod 51 and the drive part 52 to rotate to the reset, so as to provide a certain elastic self-holding force for the latch drive assembly 5 during the rotation of the first handle 2, and prevent the first handle 2 from driving the drive part and the transmission rod to rotate together.

[0058] In actual use, when the clutch pin 34 of the clutch mechanism 3 extends through the pin through hole 231 to the turntable cavity 24 under the drive of the movable part 32 and is correspondingly inserted into the corresponding clutch hole 522 of the drive disc 521, the first handle 2 establishes a linkage connection with the latch mechanism through the clutch mechanism 3. At this time, the user can manually turn the first handle 2 to drive the latch tongue 42 of the latch 4 to retract by means of the clutch mechanism 3, the drive part 52 and the transmission rod 51 to achieve unlocking. After unlocking, the first handle 2 can automatically reset under the elastic force of the torsion spring assembly 53, the latch tongue 42 of the latch 4 automatically extends and locks, and the drive part 52 rotates to the reset. At this time, the corresponding clutch hole 522 on the drive disc 521 is aligned with the pin through hole 231 on the clutch cover 23 so that the clutch pin can be accurately inserted into the corresponding clutch hole 522 during electronic clutch control.

[0059] Please see Figures 5 to 6 In one specific embodiment, the clutch mechanism 3 further includes a clutch housing 31, which is fixedly connected to the rear of the clutch cover 23. The electric drive device 33, transmission assembly, moving part 32, and clutch pin 34 are all disposed in the clutch housing 31. The clutch housing 31 has a clutch pin extension hole 311 at the position corresponding to the pin through hole 231 for the front end of the clutch pin 34 to extend. The clutch housing 31 is preferably formed by the snap-fit ​​assembly of a clutch upper cover (not shown) and a clutch lower cover (not shown) to facilitate the assembly of the internal components.

[0060] Preferably, the electric drive device 33 is a drive motor (not shown), which is fixedly connected to the clutch housing 31 along a predetermined direction. The transmission assembly includes a transmission pair (not shown) and a drive shaft 37. The drive shaft 37 is rotatably connected to the clutch housing 31 along the predetermined direction and is connected to the drive motor via the transmission pair. A helical guide structure 371 is provided on at least a portion of the shaft section of the drive shaft 37. The helical guide structure 371 is helical and preferably fixedly disposed at the middle position of the drive shaft 37.

[0061] Please see Figures 6 to 7 In one specific embodiment, the movable component 32 is provided with a first connecting portion 321, which is slidably connected to the drive shaft 37 and reciprocates along the axial direction of the drive shaft 37. The spiral guide structure 371 on the drive shaft 37 is located in the first connecting portion 321. Since the drive shaft 37 is arranged along a preset direction, its axial direction is the preset direction, so as to ensure that the movable component 32 can reciprocate between the engagement position and the clutch position in the clutch housing 31 along the preset direction.

[0062] Preferably, the first buffer 35 includes a first helical spring 351, which is elastically housed in the first connecting part 321 and movably sleeved on the drive shaft 37. The first helical spring 351 is threadedly connected to the helical guide structure 371 on the drive shaft 37, thereby realizing the elastic transmission connection between the movable part 32 and the drive shaft 37.

[0063] In actual use, when the electric drive unit 33 drives the drive shaft 37 to rotate through the transmission pair, the first helical spring 351 is driven by the helical guide structure 371, which in turn drives the first connecting part 321 to reciprocate along the axial direction of the drive shaft 37 (i.e., the preset direction), thereby driving the movable part 32 to reciprocate between the clutch position and the engagement position. During this process, if the movement of the movable part 32 is obstructed relative to the drive shaft 37, the helical guide structure 371 and the first connecting part 321 can, to a certain extent, compress the first helical spring 351 along the preset direction, causing it to elastically deform and store force, thereby forming a first buffer force storage between the drive shaft 37 and the first connecting part 321.

[0064] Furthermore, the electronic lock provided in this application has a non-rigid threaded connection between the spiral guide structure 371 on the drive shaft 37 of the clutch mechanism 3 and the first spiral spring 351. This creates an elastic transmission connection structure between the drive shaft 37 and the first connecting part 321, similar to a lead screw transmission mechanism, allowing the drive shaft 37 to have transmission capabilities like a drive screw. This structural design enables the transmission of motion between the drive motor (forward and reverse rotation) and the moving part 32 (moving in a preset direction). When the moving part 32 is moved to the clutch and engagement positions, and the drive motor continuously outputs power, the spiral guide structure 371 and the first spiral spring 351 will slip, thus maintaining the position of the moving part 32. This design is compatible with the control errors of the drive motor, improves the fault tolerance rate, and enhances the stability and reliability of the electronic clutch control of the clutch mechanism 3.

[0065] Furthermore, the non-rigid transmission connection structure between the first helical spring 351 and the drive shaft 37 forces the helical guide structure 371 and the first helical spring 351 to slip freely when the motor of the electric drive device 33 continuously outputs driving force. In this way, the buffer limits of the first buffer 35 and the second buffer 36 can be disregarded, forcing the motor of the electric drive device 33 to directly disengage from the transmission connection between it and the drive shaft 37. This completely solves the problem of motor stalling caused by the long-term obstruction of the moving part 32 or the clutch pin 34, resulting in higher safety and providing the best protection for the electric drive device 33 and the transmission components. It also greatly reduces the failure rate of the clutch mechanism 3, further improves the stability and reliability of the electronic clutch control of the electronic lock, and increases the service life of the electronic lock.

[0066] Please see Figures 5 to 6Preferably, the transmission pair is a gear transmission pair, movably disposed in the clutch housing 31, including a meshing drive gear 38 and a driven gear 39. The drive gear 38 is coaxially and fixedly connected to the motor power output shaft (not shown) of the electric drive device 33, and the driven gear 39 is coaxially and fixedly connected to the drive shaft 37. The pitch circle diameter of the drive gear 38 is smaller than that of the driven gear 39. This structural design forms a reduction gear set between the drive gear 38 and the driven gear 39, which can transform the high-speed, low-torque motion of the drive motor into a relatively low-speed, high-torque motion of the drive shaft 37 through the reduction gear set. This ensures the drive control of the electric drive device 33 and the drive shaft 37 on the moving part 32 and the clutch pin 34, allowing the clutch mechanism 3 to use a small-volume high-speed motor to achieve electronic clutch control. While ensuring sufficient thrust of the clutch mechanism 3, it can significantly reduce the overall size of the clutch mechanism 3, which is beneficial for the compact layout of the internal components of the electronic lock.

[0067] Please see Figures 2 to 3 , Figures 6 to 7 In one specific embodiment, the electronic lock further includes a push-receiving structure 322 and a mechanical lock cylinder 6. The clutch housing 31 is provided with a guide groove 312 arranged in a preset direction. One end of the push-receiving structure 322 is fixedly connected to the movable member 32 inside the clutch housing 31, and the other end is slidably connected to the guide groove 312 and extends out of the clutch housing 31. The mechanical lock cylinder 6 is fixedly arranged in the first handle 2 and is arranged perpendicular to the central axis A. The actuating end of the mechanical lock cylinder 6 is connected to an eccentric paddle 61 that movably abuts against the push-receiving structure 322.

[0068] The electronic lock provided in this application has a push structure 322 fixedly connected to the movable part 32 of the clutch mechanism 3. The push structure 322 extends out of the clutch housing 31 through the guide groove 312, so that the push structure 322 can be connected to the eccentric paddle 61 of the moving end of the mechanical lock cylinder 6. The movable part 32 can move relative to the drive shaft 37 in a preset direction. In this way, in addition to electronic clutch control, the movement of the movable part 32 can be controlled by the key 62 and the mechanical lock cylinder 6, thereby driving the clutch pin 34 to extend and retract in a preset direction, so as to realize the mechanical clutch control of the clutch mechanism 3.

[0069] In actual use, when the user manually turns the lock cylinder with key 62, the eccentric lever 61 can be rotated by the mechanical lock cylinder to push against the push structure 322. This push structure 322 then moves the movable part 32 to the engagement position, pushing the front end of the clutch pin 34 out of the clutch pin telescopic hole 311 and into the corresponding clutch hole 522 via the pin through hole 231, thus establishing a linkage between the clutch mechanism 3 and the latch mechanism. During this process, the movable part 32 is obstructed from moving in the preset direction relative to the drive shaft 37, and the first helical spring 351 is compressed through the first connecting part 321 and the spiral guide structure 371 to form a first buffer force. When the user turns the lock cylinder in the opposite direction with key 62, the eccentric lever 61 releases the pressure force on the push structure 322, the first buffer force is released, and the elasticity drives the movable part 32 back to the clutch position, causing the clutch pin 34 to disengage from the latch mechanism. At this point, even if the user manually rotates the handle, the latch mechanism cannot be unlocked, ensuring the electronic lock remains locked. This achieves mechanical clutch control of the electronic lock's clutch mechanism 3.

[0070] By adopting the above technical solution, this application provides an electronic lock that can achieve electronic and mechanical dual-path drive clutch through only the clutch mechanism 3, without the need to set up a separate mechanical linkage structure in the electronic lock to link with the mechanical lock cylinder 6. This simplifies the internal structure of the electronic lock, reduces the complexity of the structure, facilitates the compact layout of the internal structure of the electronic lock, improves the space utilization rate, and the relatively simple structure can also significantly reduce the failure rate of the electronic lock.

[0071] In addition, the clutch mechanism 3 provided in this application has a simple overall structure, low failure rate, and high stability and reliability of clutch control.

[0072] Please see Figures 5 to 7 Preferably, the first connecting portion 321 has a first cavity 3211 and a first through hole 3212 arranged in a preset direction and connecting the first cavity 3211 to the outside. The drive shaft 37 passes through the first through hole 3212 at least partially, and the spiral guide structure 371 is located in the first cavity 3211. The first helical spring 351 is elastically housed in the first cavity 3211 along the preset direction and sleeved on the drive shaft 37. It is also threadedly connected to the spiral guide structure 371 in the first cavity 3211, thereby elastically connecting the drive shaft 37 and the movable member 32 together through the first helical spring 351 and the spiral guide structure 371. The two ends of the first helical spring 351 can elastically abut against the inner walls of the two ends of the first cavity 3211 in the preset direction, so that during the rotation of the drive shaft 37, the spiral guide structure 371 can drive the first helical spring 351 to move the movable member 32.

[0073] It should be noted that the outer diameter of the spiral guide structure 371 is preferably larger than the diameter of the first through hole 3212, which can prevent the spiral guide structure 371 from disengaging from the first cavity 3211 during the movement of the movable member 32 in the preset direction. In addition, sufficient space must be provided between the spiral guide structure 371 and the first cavity 3211 in the preset direction to ensure that the movable member 32 can reciprocate between the clutch position and the engagement position along the axial direction of the drive shaft 37.

[0074] Furthermore, to ensure the independence of the electronic clutch control and mechanical clutch control of the clutch mechanism 3, when the movable member 32 moves to the clutch position, the spiral guide structure 371 is preferably located in front of the first spiral spring 351, so that the rear of the first spiral spring 351 has sufficient compression deformation space, ensuring that the movable member 32 can move forward relative to the drive shaft 37 in a preset direction, thereby driving the clutch pin 34 to extend out of the housing. Thus, during mechanical clutch control, when the eccentric paddle 61 at the actuating end of the mechanical lock cylinder 6 pushes the pushed structure 322, the movable member 32 can be moved forward through the first connecting part 321 and the first spiral spring 351 can be compressed, forming a first buffer force storage between the movable member 32 and the drive shaft 37.

[0075] Preferably, when the movable part 32 moves to the engagement position, the spiral guide structure 371 is preferably located at the rear of the first spiral spring 351, so that the front of the first spiral spring 351 has sufficient compression deformation space to ensure that the movable part 32 can move backward relative to the drive shaft 37 in a preset direction, thereby driving the clutch pin 34 to retract into the housing, preventing mechanical damage to the electric drive device 33 and transmission structure of the clutch mechanism 3 when external force acts in the opposite direction on the clutch pin 34 and the movable part 32.

[0076] Please see Figures 5 to 7 In one specific embodiment, the movable member 32 is provided with a second connecting portion 323 arranged along the X direction, and the clutch pin 34 is at least partially slidably connected to the second connecting portion 323, so that the clutch pin 34 can extend and retract relative to the movable member 32 in a preset direction. The second buffer member 36 is elastically accommodated in the second connecting portion 323 and elastically abuts against the clutch pin 34, so as to automatically drive the clutch pin 34 to elastically push out under normal conditions.

[0077] Preferably, the second connecting part 323 is provided with a second cavity 3231, a second through hole 3232 arranged in a preset direction and connecting the second cavity 3231 with the outside, the clutch pin 34 passes through the second through hole 3232 at least partially, and has a limiting part 341 accommodated in the second cavity 3231.

[0078] The second buffer 36 preferably includes a second helical spring 361, which is elastically housed in the second cavity 3231 in a preset direction. The two ends of the second helical spring 361 can respectively abut against the rear bottom surface of the second cavity 3231 and the limiting part 341, thereby automatically driving the clutch pin 34 forward to push out the second connecting part 323 under normal conditions.

[0079] Of course, in some other embodiments, the second buffer 36 may also be other elastic elements that can elastically deform and form a buffer force, such as air springs, shock absorbers, dampers, elastic rubber, etc., which will not be described in detail here.

[0080] The outer diameter of the limiting part 341 is preferably larger than the diameter of the second through hole 3232 and not smaller than the diameter of the second coil spring 361, so as to prevent the clutch pin 34 from disengaging from the second connecting part 323 through the second through hole 3232, while ensuring that the limiting part 341 can apply a compressive force to the second coil spring 361 and cause it to deform elastically.

[0081] During use, when the clutch pin 34 is subjected to external force and retracts relative to the moving part 32, the limiting part 341 can push the second coil spring 361 backward, thereby forming a second buffer force between the clutch pin 34 and the moving part 32. After the external force disappears, the release of the formed second buffer force can promote the extension of the clutch pin 34.

[0082] Please see Figure 1 , Figure 8 and Figure 9 In one specific embodiment, the electronic lock further includes a second base 7 fixedly installed on one side of the inner surface of the door panel and a second handle 8 movably connected to the outside of the second base 7. The second handle 8 is linked to the latch mechanism and can rotate relative to the second base 7 about the central axis A, so as to control the unlocking action of the latch mechanism from the inside of the door. A torsion spring assembly 53 is also provided between the second base 7 and the second handle 8, so as to automatically drive the second handle 8 to rotate relative to the second base 7 to the reset position after the user twists the second handle 8, and then control the latch to automatically lock through the transmission rod. The second handle 8 is provided with a power supply module 9 for supplying power to the electronic lock. Preferably, the power supply module 9 includes a battery (not shown), which can be an AA battery or a lithium-ion rechargeable battery.

[0083] Preferably, the second base 7 includes a second retaining ring 71 and a second retaining cover 72 that are fastened together, and the central axis of both coincides with the central axis A. The second handle 8 includes a second pivot seat 81 and a second spherical shell 82. The rear end of the second pivot seat 81 is rotatably inserted into the second base 7 along the central axis A, sleeved on the front end of the transmission rod 51 and fixedly connected thereto, and the front end is fixedly connected to the second spherical shell 82.

[0084] The torsion spring assembly 53 is elastically connected in the cavity formed between the second retaining ring 71 and the second retaining cover 72, and elastically engaged with the rear end of the second rotating shaft seat 81. This forms an elastic fit between the second base 7 and the second handle 8, and elastically drives the second handle 8 to rotate to its reset position. This ensures that after the user manually twists and releases the second handle 8, it automatically resets under the elastic force of the torsion spring assembly 53. Since the second handle 8 is directly connected to the transmission rod through the second base 7, when the second handle 8 resets under the elastic force of the torsion spring assembly 53, it can drive the transmission rod 51 to rotate until the latch tongue extends through the second rotating shaft seat 81, ensuring normal locking of the electronic lock under normal conditions. Thus, when the clutch mechanism and the latch mechanism are disengaged, and the first handle 2 is twisted, the torsion spring assembly 53 can act on the drive unit through the second rotating shaft seat 81 and the transmission rod, providing sufficient self-holding force to prevent the drive unit from rotating with the first handle, thereby ensuring the locking state of the latch.

[0085] Preferably, the portion of the second pivot seat 81 located in the second spherical shell 82 is provided with a battery compartment 811 and a communication compartment 812. The battery compartment 811 is equipped with an AA battery (not shown) for powering the electronic lock, and the communication compartment 812 is fixedly provided with a second PCB board 83.

[0086] The electronic lock provided in this application has the power supply module 9 located in the second handle 8, which makes full use of the internal space of the second spherical shell 82. After the door is closed, the power supply module 9 is located indoors, which can prevent outsiders from damaging the electronic lock by removing the battery or other means, thus improving security.

[0087] Please see Figure 1 , Figure 2 and Figure 9 In one specific embodiment, the electronic lock further includes a controller 10 and an instruction information module 100 electrically connected to the controller 10 for editing and / or storing and / or acquiring and / or identifying unlocking instructions. The controller 10 is electrically connected to the electric drive device 33 via a control circuit to control the operation of the electric drive device 33 based on the unlocking instructions.

[0088] Preferably, the instruction information module 100 includes a fingerprint module 101 for fingerprint password acquisition and / or a keyboard module 102 for local password acquisition and / or a wireless communication module 103 for cloud password acquisition and / or an RFID card reader module 104 for radio frequency password acquisition, as well as a data storage module 105 for storing unlock instruction information.

[0089] The electronic lock provided in this application can be unlocked in multiple ways, including key unlocking, fingerprint unlocking, local password unlocking, cloud password unlocking, and radio frequency password unlocking. It provides more unlocking methods, improves the ease of use of electronic locks, realizes the upgrade and transformation of traditional electronic locks to smart locks, and comprehensively improves user experience and product performance.

[0090] Key unlocking involves using key 62 and mechanical lock cylinder 6 to achieve a linkage between clutch mechanism 3 and latch mechanism for mechanical unlocking.

[0091] Fingerprint unlocking involves the fingerprint module 101 collecting the user's fingerprint data and storing it in the data storage module 105, marking the corresponding fingerprint data as fingerprint unlocking command information. During use, the user presses their finger on the sensing area of ​​the fingerprint module 101 to collect and recognize the fingerprint information. Only when the collected fingerprint information matches the stored fingerprint unlocking command information will the control module control the electric drive device 33 to operate, causing the clutch mechanism 3 to engage with the latch mechanism, allowing the user to unlock the door by rotating the first handle 2. Preferably, the user can collect and record multiple fingerprint unlocking commands through the fingerprint module 101, and each fingerprint unlocking command can achieve electronic unlocking and leave an unlocking record.

[0092] Local password unlocking involves setting and inputting an unlock password via the keyboard module 102, storing it in the data storage module 105, and marking the corresponding unlock password data as password unlocking instruction information. During use, the user manually presses the corresponding button on the keyboard module 102 to edit and input the unlock password. Only when the input unlock password matches the stored password unlocking instruction information will the control module control the electric drive device 33 to operate, causing the clutch mechanism 3 to engage with the latch mechanism, allowing the user to unlock the door by turning the first handle 2. Preferably, a default administrator password is set at the factory. After starting use, the user can change it to a 4-8 digit numeric password. The administrator password has the highest privileges and can add multiple user passwords, each of which can unlock the door and leave a record.

[0093] Cloud-based password unlocking establishes a wireless communication connection between the electronic lock and the user's cloud device via the wireless communication module 103. This allows the user to remotely connect to the electronic lock using a corresponding app on the cloud device, set an unlock password via cloud editing and input, and store it in the data storage module 105. The corresponding unlock password data is then marked as password unlocking command information. During use, the user can remotely edit and input the unlock password via the cloud device. Only when the input unlock password matches the stored password unlocking command information will the control module control the electric drive device 33 to operate, causing the clutch mechanism 3 to engage with the latch mechanism, allowing the user to unlock the lock by turning the first handle 2. Preferably, the user can also add, delete, modify, and search user passwords and fingerprints in the app. Wireless control allows modification of all electronic lock settings and viewing unlocking records containing user information, time, and specific operation information.

[0094] Radio frequency (RF) password unlocking involves the RFID card reader module 104 collecting user card key information and storing it in the data storage module 105, then marking the corresponding user card key information as RF password unlocking command information. During use, the user contacts or approaches the sensing area of ​​the RFID card reader module 104 with their card key to collect and identify the card key information. Only when the card key information matches the recorded RF password unlocking command information will the control module control the electric drive device 33 to operate, causing the clutch mechanism 3 to engage with the latch mechanism, allowing the user to unlock the door by rotating the first handle 2.

[0095] Please see Figure 1 , Figure 2 and Figure 9 In one specific embodiment, a first PCB board (not shown) electrically connected to a second PCB board 83 is fixedly disposed in the first spherical shell 22 of the first handle 2. The wireless communication module 103 is preferably integrated on the second PCB board 83. The controller 10 and the data storage module 105 are preferably integrated on the first PCB board and electrically connected to the power supply module 9 and the wireless communication module 103 through the second PCB board 83.

[0096] Preferably, the keyboard module 102 is located on the outer end face of the first spherical shell 22 and electrically connected to the first PCB board, with the first PCB board located inside the keyboard module 102. The fingerprint module 101 is located on the upper side of the first spherical shell 22 and electrically connected to the first PCB board. This structural design allows the keyboard module 102 to face the user, facilitating password editing and input by pressing the corresponding buttons. Furthermore, since most users are accustomed to using their thumbprint for unlocking, the electronic lock provided in this application places the fingerprint module 101 on the upper side of the first spherical shell 22. This design better matches the position of the thumb when the user holds the first spherical shell 22, allowing for fingerprint collection and recognition while holding the handle, thus improving the convenience of fingerprint unlocking. Additionally, the layout of the keyboard module and fingerprint module 101 on the first handle 2 of the electronic lock provided in this application is more suitable for the spherical shell handle structure of a spherical lock. While ensuring the functionality of the electronic lock, it maximizes the structural compactness of the internal components of the first spherical shell 22, facilitating the compact and miniaturized design of the spherical lock.

[0097] Please see Figure 1 and Figure 2 Preferably, the lower side of the first spherical shell 22 is provided with a keyhole (not shown) corresponding to the mechanical lock cylinder 6, and a keyhole cover plate 25 is preferably provided on the keyhole. This structural design is consistent with the layout structure of the mechanical lock cylinder 6 in the electronic lock of this application, which is perpendicular to the central axis A. In existing electronic locks, the mechanical lock cylinder is almost always designed along the central axis of the handle rotation. This design means that the keyhole must be located on the front of the handle, occupying the main area of ​​the front of the handle, which is not conducive to the layout of the keyboard module and fingerprint module in the spherical lock. In addition, the length of the handle itself along the central axis is limited. If the mechanical lock cylinder is set along the central axis, its clutch mechanism can only be set on one side of the central axis, which is also not conducive to the layout of other internal components of the electronic lock.

[0098] This application provides an optimized electronic lock with respect to the position of the mechanical lock cylinder 6. Compared to the existing arrangement along the central axis A, the mechanical lock cylinder 6 is positioned perpendicular to the central axis A, freeing up space in the middle of the handle for the clutch mechanism 3. This minimizes the length of the handle itself along the central axis A, facilitating a smaller handle design, improving the compactness of the handle structure, and simplifying the layout of internal components. Furthermore, the layout of the mechanical lock cylinder 6 is more user-friendly. With the battery powered and the electronic unlocking system functioning normally, users typically unlock the lock using fingerprint, password, or card key, rarely using the mechanical key. Therefore, placing the keyhole on the lower side wall of the first spherical shell 22 does not affect the user's frequent electronic unlocking experience and effectively conceals the keyhole, enhancing the overall aesthetic design of the first handle. Additionally, the relative placement of the keyhole and fingerprint module 101 also facilitates a compact layout of the internal structure of the first handle 2 on both sides of the central axis.

[0099] It should also be noted that the electronic lock provided in this application does not have a mandatory requirement for the coordination between the forward or reverse rotation of the motor of the electric drive device 33 and the extension and retraction direction of the clutch pin 34. It can control the extension of the clutch pin 34 to be controlled by forward rotation or reverse rotation. In actual manufacturing, it can be adjusted accordingly as needed.

[0100] The clutch mechanism 3 of the electronic lock provided in this application, whether using electronic clutch control or mechanical clutch control to switch the clutch state, has consistent control over the extension and retraction of the clutch pin 34 by the moving part 32. This allows for the use of a unified external clutch matching structure to achieve consistent control and ensures the electronic and mechanical dual-path drive clutch effect of the clutch mechanism 3.

[0101] The above are merely preferred embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. An electronic lock, comprising a first base (1), a first handle (2) movably connected to the outside of the first base (1), a clutch mechanism (3) disposed in the first handle (2), and a latch mechanism linked to the clutch mechanism (3), wherein the first handle (2) can drive the clutch mechanism (3) to rotate about a central axis (A) relative to the first base (1); characterized in that, The clutch mechanism (3) has a clutch position and an engagement position correspondingly arranged along a preset direction, and the clutch mechanism (3) includes: The movable part (32) moves back and forth between the clutch position and the engagement position in a preset direction relative to the first handle (2); An electric drive unit (33) is connected to the movable part (32) via a transmission assembly to drive the movable part (32) to move; The clutch pin (34) is movably connected to the movable part (32) along the preset direction and can move with the movable part (32) to be inserted into or disengaged from the latch mechanism. The first buffer (35) is elastically connected between the transmission assembly and the movable part (32) to form a first buffer force between the transmission assembly and the movable part (32) when the movement of the movable part (32) relative to the transmission assembly is obstructed. The second buffer (36) is elastically connected between the movable part (32) and the clutch pin (34) to form a second buffer force between the movable part (32) and the clutch pin (34) when the movement of the clutch pin (34) relative to the movable part (32) is obstructed. The electronic lock further includes a push structure (322) and a mechanical lock cylinder (6). The push structure (322) is fixedly connected to the movable part (32). The mechanical lock cylinder (6) is fixedly disposed in the first handle (2) and perpendicular to the central axis (A). The moving end of the mechanical lock cylinder (6) is connected to an eccentric paddle (61) that moves against the push structure (322) so that the push structure (322) can be pushed by rotating the eccentric paddle (61).

2. The electronic lock according to claim 1, characterized in that, The transmission assembly includes a drive shaft (37), which is rotatably connected to the first handle (2) along the preset direction and is connected to the electric drive device (33) via a transmission pair. At least a portion of the shaft section of the drive shaft (37) is provided with a spiral guide structure (371). The movable component (32) is at least partially movably connected to the drive shaft (37) and reciprocates along the axial direction of the drive shaft (37); the spiral guide structure (371) is located in the movable component (32); The first buffer (35) includes a first helical spring (351), which is elastically housed in the movable member and movably sleeved on the drive shaft (37), and the first helical spring (351) is threadedly connected to the helical guide structure (371).

3. The electronic lock according to claim 1, characterized in that, The latch mechanism includes a latch (4) and a latch drive assembly (5). The latch (4) is disposed inside the first base (1) and perpendicular to the central axis (A). The latch drive assembly (5) is rotatably disposed between the first base (1) and the first handle (2) about the central axis (A), and one end of the latch drive assembly (5) is connected to the latch (4) so ​​as to drive the latch (4) to extend and retract by rotation.

4. The electronic lock according to claim 3, characterized in that, The latch drive assembly (5) includes a transmission rod (51) and a drive unit (52), wherein: The transmission rod (51) is arranged along the central axis (A) and is at least partially connected to the latch (4). One end of the drive unit (52) is fixedly connected to the transmission rod (51), and the other end corresponds to the clutch mechanism (3), and is provided with at least one clutch hole (522) that engages with the clutch pin (34); the drive unit (52) can rotate relative to the first handle (2).

5. The electronic lock according to claim 4, characterized in that, The latch (4) includes a latch body (41), a latch tongue (42) movably connected to the latch body (41), and a telescopic mechanism connected between the latch body (41) and the latch tongue (42). The transmission rod (51) is inserted into the latch body (41) and is connected to the telescopic mechanism.

6. The electronic lock according to claim 1, characterized in that, It also includes a second base (7) and a second handle (8) movably connected to the outside of the second base (7). The second handle (8) is linked to the latch mechanism and can rotate relative to the second base (7) around the central axis (A). The second handle (8) is provided with a power supply module (9) for power supply.

7. The electronic lock according to any one of claims 1-6, characterized in that, It also includes a controller (10) and an instruction information module (100) electrically connected to the controller (10) for editing and / or storing and / or acquiring and / or identifying unlocking instructions; the controller (10) is electrically connected to the electric drive device (33) to control the operation of the electric drive device (33) based on the unlocking instructions.

8. The electronic lock according to claim 7, characterized in that, The instruction information module (100) includes a fingerprint module (101) for fingerprint password acquisition and / or a keyboard module (102) for local password acquisition and / or a wireless communication module (103) for cloud password acquisition and / or an RFID card reader module (104) for radio frequency password acquisition.

9. The electronic lock according to claim 8, characterized in that, The keyboard module (102) is located on the outer end face of the first handle (2), and the fingerprint module (101) is located on the upper side of the first handle (2).

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