Intelligent lock

Abstract

The invention discloses an intelligent lock which comprises a lock seat, a lock plate, a lock hook piece, a lock tongue piece and a spring. The lock plate and the lock seat are fixedly connected in parallel, and a U-shaped lock opening is formed in the edge of one side of an integrated structure formed by the lock plate and the lock seat. A hinge shaft a and a hinge shaft b are vertically and fixedly arranged on an integrated structure formed by the lock seat and the lock plate. A convex hook a, a convex hook b and a convex hook c are sequentially and integrally arranged on the side, close to the spring bolt piece, of the lock hook piece in the length direction. A protruding tongue is integrally arranged on the side, close to the lock hook piece, of the spring bolt piece. The part, between the convex hook a and the convex hook b, of the lock hook sheet is rotationally mounted on the hinge shaft a; one end of the spring bolt piece is rotationally mounted on the hinge shaft b; the unlocking process is automatically completed, meanwhile, a certain outward ejection effect is formed during unlocking, and during locking, the linkage structure in the lock body is driven by means of thrust of a user in the locking process, so that automatic locking is achieved.

Description

Technical Field

[0001] The invention belongs to the field of locks. Background Art

[0002] The unlocking process of the smart lock is completed automatically, and a certain outward ejection effect is formed while unlocking. When locking, the linkage structure in the lock body is driven by the thrust of the user during the locking process to automatically lock the lock. However, in the process of automatically locking the lock by driving the linkage structure in the lock body with the help of the user's thrust, if the user is required to apply a relatively large thrust throughout the whole process, it may affect the user's experience of the locking process and easily cause the lock to fail. The present solution provides a new smart lock body structure, which can not only realize the above functions, but also improve the user experience in the locking stage. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a smart lock and a working method, in which the unlocking process is completed automatically and a certain outward ejection effect is formed while unlocking. When locking, the linkage structure in the lock body is driven by the thrust of the user during the locking process to automatically lock the lock.

[0004] Technical solution: To achieve the above-mentioned purpose, a smart lock of the present invention includes a lock seat, a lock plate, a lock hook piece, a lock tongue piece and a spring; the lock plate is fixedly connected to the lock seat in parallel, and a U-shaped lock port is provided on one side edge of the integrated structure formed by the lock plate and the lock seat.

[0005] A hinge axis a and a hinge axis b are vertically fixed on the integrated structure formed by the lock seat and the lock plate, and a convex hook a, a convex hook b and a convex hook c are integrally arranged in sequence along the length direction on the side of the lock hook piece close to the lock tongue piece; a convex tongue is integrally arranged on the side of the lock tongue piece close to the lock hook piece; the part of the lock hook piece between the convex hook a and the convex hook b is rotatably mounted on the hinge axis a; one end of the lock tongue piece is rotatably mounted on the hinge axis b; the tail a of the other end of the lock tongue piece is elastically pulled and connected with the tail b of the end of the lock hook piece away from the convex hook a by a spring; the end of the convex tongue is stuck between the convex hooks b and c, and the lock hook piece and the lock tongue piece are interlocked under the pulling force of the spring.

[0006] Furthermore, in the interlocking state, a gap is formed between the end of the convex hook b and the outer contour of the lock tongue piece.

[0007] Furthermore, it also includes a buckle arm, at the end of which a locking column is provided, and the locking column can be radially inserted into the U-shaped locking port.

[0008] When the end of the tongue is stuck between the b hook and the c hook, the b hook and the a hook are respectively located at the inner and outer ends of the depth direction of the U-shaped lock, and the lock column inserted into the U-shaped lock is clamped between the b hook and the a hook.

[0009] Furthermore, when the end of the tongue is stuck between the b convex hook and the c convex hook, when the lock tongue piece is forced to deflect clockwise around the b hinge axis, the end of the tongue will push the c convex hook, and then push the lock hook piece to deflect counterclockwise around the a hinge axis, so that the end of the tongue gradually passes over the c convex hook and reaches the side of the c convex hook away from the b convex hook.

[0010] Furthermore, the tail portion a of the bolt piece is vertically fixedly connected with a driving pile, and the driving pile is pushed under the action of an external force.

[0011] Furthermore, it also includes a linear slide, which is movably installed on the linear guide rail on the lock seat along the length direction, and the linear slide is parallel to the spring axis direction in the initial state; a push block is vertically fixed at one end of the linear slide, and the push block is on the side of the driving pile close to the tail of b. The linear slide can drive the push block to push the driving pile to the side away from the tail of b, so that the lock tongue piece rotates clockwise around the hinge axis of b; a linear array transmission tooth body is arranged on one side of the linear slide along the length direction, and a driving motor and a gear group transmission structure are installed on the lock seat, and the output end of the driving motor is transmitted through the gear group transmission structure to cooperate with the linear array transmission tooth body on the linear slide, so that the driving motor drives the linear slide to slide along its own length direction.

[0012] Furthermore, a rotating shaft perpendicular to the lock tongue piece is arranged on one side of the driving pile near the tail of b, and the driver on the lock seat can drive the rotating shaft to rotate; a helical wheel is integrally arranged on the rotating shaft, and the outer contour of the helical wheel is a constant velocity helical contour, and the two ends of the constant velocity helical contour are respectively a proximal end and a distal end, and the vortex center of the constant velocity helical contour coincides with the rotating shaft; the driving pile, the rotating shaft and the helical wheel are all metal conductive structures; in the initial state, and when the end of the tongue is stuck between the convex hook of b and the convex hook of c, an electrically disconnected gap is formed between the proximal end of the constant velocity helical contour and the driving pile; the helical wheel and the rotating shaft are electrically grounded, and the driving pile is connected to the positive pole of the power supply through a wire with a galvanometer and a protective resistor.

[0013] Furthermore, when the lock is closed, the lock post is pushed into the U-shaped lock mouth along the depth direction. When the current detected by the galvanometer disappears, the driver is immediately controlled to drive the spiral wheel to continue to rotate counterclockwise around the shaft, so that the constant speed spiral profile re-electrically contacts and continues to push the driving pile.

[0014] Beneficial effects: The present invention can complete the function of automatic unlocking, and form a certain outward ejection effect when unlocking. When locking, it uses the thrust of the user in the locking process to drive the linkage structure in the lock body to automatically lock. At the same time, in the second embodiment, the comprehensive resistance in the locking process is reduced, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the lock body;

[0016] Figure 2 It is a three-dimensional schematic diagram of the lock body;

[0017] Figure 3 This is a schematic diagram of the lock body disassembly;

[0018] Figure 4 This is a disassembly diagram of the transmission structure inside the lock body;

[0019] Figure 5 It is a schematic diagram of the first embodiment in a locked state;

[0020] Figure 6 It is a schematic diagram of the first embodiment in the unlocked state;

[0021] Figure 7 is a schematic diagram of the second embodiment in a locked state;

[0022] Figure 8 It is a schematic diagram of the second embodiment in the unlocked state;

[0023] Fig. 9 This is a schematic diagram of the second embodiment when it is about to be locked;

[0024] Fig.10 This is a schematic diagram of the identification current of the second implementation. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] As attached Figures 1 to 10 The smart lock shown includes a lock seat 100, a lock plate 1, a lock hook piece 7, a lock tongue piece 8 and a spring 9; the lock plate 1 is fixedly connected to the lock seat 100 in parallel, and a U-shaped lock opening 2 is provided on one side edge of the integrated structure formed by the lock plate 1 and the lock seat 100; it also includes a buckle arm 5, at the end of the buckle arm 5 is provided with a lock buckle column 6 perpendicular to the surface where the lock plate 1 is located, and the lock buckle column 6 can be radially inserted into the U-shaped lock opening 2; in this case, the lock seat 100 and the lock plate 1 are fixed on the cabinet body of the electric bicycle cabinet, and the buckle arm 5 is fixedly connected to the cabinet door of the electric bicycle cabinet.

[0027] like Figure 4 , 56, the integral structure formed by the lock seat 100 and the lock plate 1 is vertically fixed with an a hinge axis 3 and a b hinge axis 4, and the side of the lock hook piece 7 close to the lock tongue piece 8 is integrally provided with a convex hook 20, a convex hook 19 and a c convex hook 18 in sequence along the length direction; the side of the lock tongue piece 8 close to the lock hook piece 7 is integrally provided with a convex tongue 23; the part of the lock hook piece 7 between the a convex hook 20 and the b convex hook 19 is rotatably mounted on the a hinge axis 3; one end of the lock tongue piece 8 is rotatably mounted on the b hinge axis 4; the tail a 12 of the other end of the lock tongue piece 8 is connected to the lock hook piece 7 away from the a convex hook The tail portion 17 at one end b of the hook 20 is elastically pulled and connected by the spring 9; under the elastic pulling of the spring 9, the lock hook piece 7 always tends to swing clockwise around the axis of the a hinge shaft 3, and the lock tongue piece 8 always tends to swing counterclockwise around the b hinge shaft 4; under the elastic pulling of the spring 9, the end of the tongue 23 is stuck between the b convex hook 19 and the c convex hook 18, so that the lock hook piece 7 and the lock tongue piece 8 are interlocked under the pulling force of the spring 9; in the interlocking state, a gap 110 is formed between the end of the b convex hook 19 and the outer contour of the lock tongue piece 8 to prevent travel interference.

[0028] like Figure 5 When the end of the protruding tongue 23 is stuck between the b protruding hook 19 and the c protruding hook 18, the b protruding hook 19 and the a protruding hook 20 are respectively located at the inner and outer ends of the depth direction of the U-shaped lock hole 2, and the lock buckle column 6 inserted into the U-shaped lock hole 2 is clamped between the b protruding hook 19 and the a protruding hook 20; when the end of the protruding tongue 23 is stuck between the b protruding hook 19 and the c protruding hook 18, when the lock tongue piece 8 is forced to deflect clockwise around the b hinge axis 4, the end of the protruding tongue 23 will push the c protruding hook 18, and then push the lock hook piece 7 to deflect counterclockwise around the a hinge axis 3, so that the end of the protruding tongue 23 gradually passes over the c protruding hook 18 and reaches the side of the c protruding hook 18 away from the b protruding hook 19; when the end of the protruding tongue 23 passes over the c protruding hook 18 and reaches the side of the c protruding hook 18 away from the b protruding hook 19, the a protruding hook 20 is outwardly separated from the outer end of the U-shaped lock hole 2, thereby achieving unlocking, such as Figure 6 shown.

[0029] The tail portion a 12 of the bolt piece 8 is vertically fixedly connected with a driving pile 10 , and the driving pile 10 is pushed under the action of an external force.

[0030] The first embodiment of the driving structure:

[0031] It also includes a linear slide 13, which is movably mounted on a linear guide rail on the lock seat 100 along the length direction, and the linear slide 13 is parallel to the axial direction of the spring 9 in the initial state; a push block 11 is vertically fixedly arranged at one end of the linear slide 13, and the push block 11 is on the side of the driving pile 10 close to the b tail 17. The linear slide 13 can drive the push block 11 to push the driving pile 10 to the side away from the b tail 17, so that the lock tongue piece 8 rotates clockwise around the b hinge shaft 4; a linear array transmission tooth body 14 is arranged on one side of the linear slide 13 along the length direction, and a driving motor 16 and a gear group transmission structure 15 are installed on the lock seat 100. The output end of the driving motor 16 is transmitted through the gear group transmission structure 15 to cooperate with the linear array transmission tooth body 14 on the linear slide 13, so that the driving motor 16 drives the linear slide 13 to slide along its own length direction.

[0032] The method of the first embodiment:

[0033] The initial state is that the device is in a locked state. Under the elastic pulling of the spring 9, the end of the tongue 23 is stuck between the b convex hook 19 and the c convex hook 18, so that the lock hook piece 7 and the lock tongue piece 8 are interlocked under the pulling force of the spring 9; the lock post 6 inserted into the U-shaped lock 2 is clamped between the b convex hook 19 and the a convex hook 20; in this state, since the a convex hook 20 is located at the outer end of the U-shaped lock 2 in the depth direction, the lock post 6 cannot be separated from the U-shaped lock 2, thereby achieving the purpose of locking the electric bicycle cabinet door and entering the locked state;

[0034] When the user issues an unlocking command, the door needs to be automatically unlocked. The unlocking process is as follows: the driving motor 16 drives the linear slide bar 13 through the gear transmission structure 15, and then the linear slide bar 13 drives the push block 11 to push the driving pile 10 to the side away from the tail portion b 17, so that the lock tongue piece 8 is forced to rotate clockwise around the hinge axis b 4. When the lock tongue piece 8 is forced to deflect clockwise around the hinge axis b 4, the end of the protruding tongue 23 pushes the protruding hook c 18, and then pushes the lock hook piece 7 to rotate around the hinge axis a 3 The counterclockwise deflection causes the end of the tongue 23 to gradually pass over the c convex hook 18 and reach the side of the c convex hook 18 away from the b convex hook 19; when the end of the tongue 23 passes over the c convex hook 18 and reaches the side of the c convex hook 18 away from the b convex hook 19, the a convex hook 20 is outwardly separated from the outer end of the U-shaped lock 2, and the side of the b convex hook 19 close to the a convex hook 20 generates a certain outward thrust on the lock post 6, the lock post 6 is separated from the U-shaped lock 2, and the cabinet door is opened, thereby realizing unlocking and lifting the door. Figure 6 As shown, the driving motor 16 then drives the linear slide 13 back to the initial state through the gear set transmission structure 15. Since the lock hook piece 7 and the lock tongue piece 8 enter a new interlocking state at this time, even if the linear slide 13 returns to the initial state, the lock body structure is still in the unlocked state.

[0035] After the user takes the item, he closes the door. When the electric bicycle cabinet door is about to be completely closed, the lock column 6 is pushed into the U-shaped lock hole 2 along the depth direction. During the process of pushing the lock column 6 into the U-shaped lock hole 2 along the depth direction, the lock column 6 is forced to press the b convex hook 19 inwardly on the side close to the a convex hook 20, and push the b convex hook 19 inward, so that the lock hook piece 7 is forced to rotate counterclockwise around the a hinge axis 3. At the same time, the c convex hook 18 pushes the convex tongue 23, so that the lock tongue piece 8 rotates clockwise around the b hinge axis 4. Finally, the end of the convex tongue 23 gradually passes over the c convex hook 18, so that the end of the convex tongue 23 is re-stuck between the b convex hook 19 and the c convex hook 18; the locking state at the initial state is restored.

[0036] During the door closing action of the above process, when the lock post 6 is pushed into the U-shaped lock slot 2 along the depth direction, the lock post 6 is forced to press the side of the b convex hook 19 close to the a convex hook 20 inward, so that the lock hook piece 7 is forced to rotate counterclockwise around the a hinge axis 3. In this process, the lock hook piece 7 is not only subjected to resistance from the spring 9, but also to resistance from the convex tongue 23, which results in the lock post 6 being pushed into the U-shaped lock slot 2 along the depth direction. The user needs to use a greater force to push the cabinet door to achieve locking, and the rebound force is relatively large throughout the whole process and gradually increases, affecting the user experience.

[0037] The second embodiment of the driving structure:

[0038] A rotating shaft 25 perpendicular to the lock tongue piece 8 is arranged on one side of the driving pile 10 near the tail portion b 17, and the driver on the lock seat 100 can drive the rotating shaft 25 to rotate; a spiral wheel 27 is integrally arranged on the rotating shaft 25, and the outer contour of the spiral wheel 27 is a constant velocity spiral contour 26, and the two ends of the constant velocity spiral contour 26 are respectively a proximal end 26a and a distal end 26b, and the vortex center of the constant velocity spiral contour 26 coincides with the rotating shaft 25; the driving pile 10, the rotating shaft 25 and the spiral wheel 27 are all metal conductive structures; in the initial state, and when the end of the tongue 23 is stuck between the b convex hook 19 and the c convex hook 18, an electrically disconnected gap 28 is formed between the proximal end 26a of the constant velocity spiral contour 26 and the driving pile 10; the spiral wheel 27 and the rotating shaft 25 are electrically grounded, and the driving pile 10 is connected to the positive pole of the power supply through a wire with a galvanometer 32 and a protective resistor.

[0039] The method of the second embodiment:

[0040] The initial state is that the device is in a locked state. Under the elastic pulling of the spring 9, the end of the tongue 23 is stuck between the b convex hook 19 and the c convex hook 18, so that the lock hook piece 7 and the lock tongue piece 8 are interlocked under the pulling force of the spring 9; the lock post 6 inserted into the U-shaped lock 2 is clamped between the b convex hook 19 and the a convex hook 20; in this state, since the a convex hook 20 is located at the outer end of the U-shaped lock 2 in the depth direction, the lock post 6 cannot be separated from the U-shaped lock 2, thereby achieving the purpose of locking the electric bicycle cabinet door and entering the locked state; and in this state, an electrically disconnected gap 28 is formed between the proximal end 26a of the constant velocity spiral profile 26 and the driving pile 10, and the galvanometer 32 cannot detect the current;

[0041] When the user issues an unlocking command, the door needs to be automatically unlocked. The unlocking process is as follows: the driver drives the spiral wheel 27 to rotate counterclockwise around the rotating shaft 25, so that the constant speed spiral profile 26 gradually contacts and pushes the driving pile 10 electrically, and the galvanometer 32 detects the current; the lock tongue piece 8 is forced to rotate clockwise around the b hinge axis 4. When the lock tongue piece 8 is forced to deflect clockwise around the b hinge axis 4, the end of the protruding tongue 23 will push the c protruding hook 18, and then push the lock hook piece 7 to deflect counterclockwise around the a hinge axis 3, so that The end of the tongue 23 gradually passes over the c convex hook 18 and reaches the side of the c convex hook 18 away from the b convex hook 19; when the end of the tongue 23 passes over the c convex hook 18 and reaches the side of the c convex hook 18 away from the b convex hook 19, the a convex hook 20 disengages from the outer end of the U-shaped lock 2, and the side of the b convex hook 19 close to the a convex hook 20 generates a certain outward thrust on the lock post 6, the lock post 6 disengages from the U-shaped lock 2, and the cabinet door opens, thereby achieving unlocking, and at this time, the rotation of the spiral wheel 27 is immediately stopped;

[0042] After the user takes the item and closes the door, the electric bicycle cabinet door is about to be completely closed, and the lock column 6 is pushed into the U-shaped lock hole 2 along the depth direction. During the process of pushing the lock column 6 into the U-shaped lock hole 2 along the depth direction, the lock column 6 is forced to press the side of the b convex hook 19 close to the a convex hook 20 inward, and push the b convex hook 19 inward, so that the lock hook piece 7 is forced to rotate counterclockwise around the a hinge axis 3. At the same time, the c convex hook 18 will also push the convex tongue 23, so that the lock tongue piece 8 rotates clockwise around the b hinge axis 4. At the initial stage of the clockwise rotation of the lock tongue piece 8 around the b hinge axis 4, the driving pile 10 automatically and instantly disengages from the constant speed spiral profile 26 of the spiral wheel 27. As a result, the current detected by the galvanometer 32 disappears immediately. When the current detected by the galvanometer 32 disappears, the driver is immediately controlled to drive the spiral wheel 27 to continue to rotate counterclockwise around the rotating shaft 25, so that the constant speed spiral profile 26 is electrically contacted again and continues to push the driving pile 10, so that the lock tongue piece 8 actively continues to rotate clockwise around the hinge axis b 4, thereby eliminating the need for the lock hook piece 7 to drive; in the above process, except for the initial stage, the lock hook piece 7 is only subject to the resistance from the spring 9, and there is no need to drive the lock tongue piece 8 additionally, thereby reducing the comprehensive resistance during the door closing process and improving the user experience; when the lock buckle column 6 is completely pushed into the U-shaped lock port 2 along the depth direction, as shown in FIG. Fig. 9 As shown, the shaft 25 continues to rotate counterclockwise, the driving pile 10 is separated from the distal end 26b of the constant speed spiral profile 26, the driving pile 10 automatically loses the constraint of the constant speed spiral profile 26, and the lock tongue piece 8 automatically returns to its original position under the pulling force of the spring 9, so that the end of the protruding tongue 23 is re-stuck between the b protruding hook 19 and the c protruding hook 18; and the locking state at the initial state is restored.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A smart lock, characterized in that: The invention comprises a lock seat (100), a lock plate (1), a lock hook piece (7), a lock tongue piece (8) and a spring (9); the lock plate (1) is fixedly connected to the lock seat (100) in parallel, and a U-shaped lock opening (2) is arranged on one side edge of the integral structure formed by the lock plate (1) and the lock seat (100); An a hinge shaft (3) and a b hinge shaft (4) are vertically fixedly arranged on the integral structure formed by the lock seat (100) and the lock plate (1); a convex hook (20), a convex hook (19) and a c convex hook (18) are integrally arranged in sequence along the length direction on the side of the lock hook piece (7) close to the lock tongue piece (8); a convex tongue (23) is integrally arranged on the side of the lock tongue piece (8) close to the lock hook piece (7); a portion of the lock hook piece (7) between the a convex hook (20) and the b convex hook (19) is rotatably mounted on the a hinge shaft (3); one end of the lock tongue piece (8) is rotatably mounted on the b hinge shaft (4); a tail portion a (12) at the other end of the lock tongue piece (8) and a tail portion b (17) at one end of the lock hook piece (7) away from the a convex hook (20) are elastically pulled and connected by a spring (9); The end of the protruding tongue (23) is clamped between the protruding hook b (19) and the protruding hook c (18), and the lock hook piece (7) and the lock tongue piece (8) are interlocked under the pulling force of the spring (9).

2. A smart lock according to claim 1, characterized in that: In the interlocking state, a gap (110) is formed between the end of the protruding hook (19) and the outer contour of the locking tongue piece (8).

3. A smart lock according to claim 2, characterized in that: It also comprises a buckle arm (5), a locking column (6) is arranged at the end of the buckle arm (5), and the locking column (6) can be radially inserted into the U-shaped locking opening (2); When the tip of the tongue (23) is clamped between the b convex hook (19) and the c convex hook (18), the b convex hook (19) and the a convex hook (20) are respectively located at the inner and outer ends of the U-shaped lock opening (2) in the depth direction, and the lock post (6) clamped in the U-shaped lock opening (2) is clamped between the b convex hook (19) and the a convex hook (20).

4. The smart lock according to claim 2, characterized in that: When the end of the protruding tongue (23) is stuck between the b protruding hook (19) and the c protruding hook (18), when the locking tongue piece (8) is forced to deflect clockwise around the b hinge axis (4), the end of the protruding tongue (23) pushes the c protruding hook (18), thereby pushing the locking hook piece (7) to deflect counterclockwise around the a hinge axis (3), so that the end of the protruding tongue (23) gradually passes over the c protruding hook (18) and reaches the side of the c protruding hook (18) away from the b protruding hook (19).

5. The smart lock according to claim 4, characterized in that: The tail portion a (12) of the locking tongue piece (8) is vertically fixedly connected to a driving pile (10), and the driving pile (10) is pushed under the action of an external force.

6. The smart lock according to claim 5, characterized in that: The invention also includes a linear slide bar (13), which is movably mounted on a linear guide rail on a lock seat (100) along a length direction, and the linear slide bar (13) is parallel to the axial direction of the spring (9) in an initial state; a push block (11) is vertically fixedly arranged at one end of the linear slide bar (13), and the push block (11) is located on a side of the driving pile (10) close to the b tail (17), and the linear slide bar (13) can drive the push block (11) to push the driving pile (10) toward a side away from the b tail (17). 0), so that the lock tongue piece (8) rotates clockwise around the hinge shaft b (4); a linear array transmission tooth body (14) is arranged on one side of the linear slide bar (13) along the length direction, and a driving motor (16) and a gear group transmission structure (15) are installed on the lock seat (100), and the output end of the driving motor (16) is driven by the gear group transmission structure (15) to cooperate with the linear array transmission tooth body (14) on the linear slide bar (13), so that the driving motor (16) drives the linear slide bar (13) to slide along its own length direction.

7. The smart lock according to claim 5, characterized in that: A rotating shaft (25) perpendicular to the lock tongue piece (8) is arranged on one side of the driving pile (10) close to the tail portion (17), and the driver on the lock seat (100) can drive the rotating shaft (25) to rotate; a spiral wheel (27) is integrally arranged on the rotating shaft (25), and the outer contour of the spiral wheel (27) is a constant velocity spiral contour (26), and the two ends of the constant velocity spiral contour (26) are respectively a proximal end (26a) and a distal end (26b), and the vortex center of the constant velocity spiral contour (26) overlaps with the rotating shaft (25). The driving pile (10), the rotating shaft (25) and the helical wheel (27) are all metal conductive structures; in the initial state, when the end of the tongue (23) is stuck between the b convex hook (19) and the c convex hook (18), an electrically disconnected gap (28) is formed between the proximal end (26a) of the constant velocity helical profile (26) and the driving pile (10); the helical wheel (27) and the rotating shaft (25) are electrically grounded, and the driving pile (10) is connected to the positive pole of the power supply through a wire with a galvanometer (32) and a protective resistor.

8. A smart lock working method according to claim 7, characterized in that: When locking, the lock post (6) is pushed into the U-shaped lock opening (2) along the depth direction. When the current detected by the galvanometer (32) disappears, the driver is immediately controlled to drive the spiral wheel (27) to continue to rotate counterclockwise around the rotating shaft (25), so that the constant speed spiral profile (26) is electrically contacted again and continues to push the driving pile (10).

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