Lock and switching method

Abstract

The present invention discloses a lock and a switching method. The lock includes: a bottom plate, a lock shaft mechanism, a limiting mechanism, and an induction switch. A limiting portion is provided on the lock shaft mechanism, and the lock shaft mechanism includes an unlocking state and a locking state; the limiting mechanism cooperates with the limiting portion and is used to limit the locking state of the lock shaft mechanism; the induction switch is used to sense the position of the limiting mechanism and send out a signal of the unlocking and locking states. When the lock of the present invention is in use, it ensures that the induction switch is triggered while the limiting portion is engaged with the limiting mechanism, solving the problem that the traditional induction switch is triggered prematurely or delayed.

Description

Technical Field

[0001] The present invention relates to the field of electromechanics, and particularly to a lock and a switching method thereof. Background Art

[0002] With the development of Internet technology, shared economy such as shared bicycles and shared power-assisted bicycles emerging in various cities across the country can be seen almost everywhere. Compared with the traditional "stationed" public bicycles, this kind of "dockless" shared bicycle that can be picked up and parked at will brings greater convenience to users.

[0003] Currently, there are various types of locks applied to shared bicycles and shared power-assisted bicycles in the market, including mechanical locks and electronic locks. Among them, due to the higher compatibility and cooperation with the Internet, electronic locks have been more widely used. However, when the traditional manually pressed electronic lock is pressed, the internal induction switch will be triggered prematurely or delayed, resulting in a false lock phenomenon where the locking signal sent does not match the locking state, leading to battery theft; at the same time, the poor reliability of the lock itself will also cause battery theft. Summary of the Invention

[0004] Based on this, the present invention aims to overcome the defects that when the traditional manually pressed electronic lock is pressed, the internal induction switch will be triggered prematurely or delayed, resulting in a false lock phenomenon where the locking signal sent does not match the locking state, leading to battery theft; at the same time, the poor reliability of the lock itself will also cause battery theft, and provides a lock and its switching method.

[0005] The technical solution is as follows:

[0006] A lock, comprising:

[0007] A bottom plate;

[0008] A lock shaft mechanism, movably arranged on the bottom plate, including a lock tongue. In the locked state, the lock shaft mechanism can extend the lock tongue along the locking direction; in the unlocked state, the lock shaft mechanism retracts the lock tongue along the unlocking direction; a limiting portion is provided on the lock shaft mechanism;

[0009] A limiting mechanism, rotatably arranged on the bottom plate, cooperating with the limiting portion and used for limiting the locked state of the lock shaft mechanism;

[0010] An induction switch, arranged on the bottom plate and used for sensing the position of the limiting mechanism and sending a signal of the locked and unlocked states.

[0011] When the lock of this technical solution is in use, it ensures that the induction switch is triggered simultaneously while the limiting portion cooperates with the limiting mechanism, solving the problem that the traditional induction switch is triggered prematurely or delayed.

[0012] Specifically, the locked state of the shaft locking mechanism is the initial state, at which the lock tongue of the shaft locking mechanism extends out of the bottom plate, and the limit mechanism cooperates with the limit part of the shaft locking mechanism. When the system recognizes an external unlocking signal, the position of the limit mechanism changes and disengages from the limit part; the induction switch senses the position change of the limit mechanism, and the induction switch sends a signal of unlocking state; at the same time, the shaft locking mechanism loses the limit constraint of the limit mechanism and resets, and the lock tongue retracts, and the shaft locking mechanism is in unlocking state.

[0013] When the lock is closed, an external force pushes the lock shaft mechanism to make the lock tongue extend out of the bottom plate; at this time, the position of the limit mechanism changes and cooperates with the limit part; when the limit part and the limit mechanism complete the cooperation, the sensor switch senses the position change of the limit mechanism, and the sensor switch sends a signal of the locked state, and the lock returns to the initial state.

[0014] In one embodiment, the lock further comprises a safety mechanism, which is disposed on the bottom plate and electrically connected to the induction switch, and is used to provide insurance for the limiting effect of the limiting mechanism.

[0015] In one of the embodiments, the bottom plate is provided with a locking shaft through hole for penetrating the locking shaft mechanism, and the locking shaft mechanism can move along the axial direction of the locking shaft through hole to make the locking tongue extend out of or retract into the locking shaft through hole.

[0016] In one embodiment, the locking shaft mechanism includes a locking shaft body inserted into the locking shaft through hole, and a reset elastic member connected to the locking shaft body and providing power for the movement of the locking shaft body, and the limiting portion and the locking tongue are both arranged on the locking shaft body.

[0017] In one embodiment, the lock shaft body is a secondary stepped shaft, and the reset elastic member is a reset spring; the reset spring is sleeved on the small diameter section of the secondary stepped shaft, and the outer diameter of the reset spring is smaller than the outer diameter of the large diameter end of the secondary stepped shaft; the limiting portion is arranged on the small diameter section; the locking tongue is the free end of the small diameter section, or the locking tongue is connected to the free end of the small diameter section; the secondary stepped shaft is slidably connected to the base plate via a pin arranged on the large diameter section; a sliding groove cooperating with the pin is provided on the base plate, and the length direction of the sliding groove is consistent with the movement direction of the lock shaft body.

[0018] In one embodiment, the limiting mechanism includes a clamping shaft provided with a rotating shaft hole and a torsion spring provided at the rotating shaft hole and used to reset the clamping shaft; a rotating shaft that is inserted and matched with the rotating shaft hole is provided on the bottom plate; the limiting portion is a clamping slot, and the clamping shaft includes a clamping portion that cooperates with the clamping slot, a triggering portion that cooperates with the induction switch, and a pushing portion that cooperates with the safety mechanism.

[0019] In one embodiment, the triggering part and the pushing part are respectively located at two opposite ends of the clamping part.

[0020] In one embodiment, the safety mechanism includes a safety limiting component for pushing and limiting the pushing part, a driving part for driving the safety limiting component to act, and a sensing part for sensing the position of the safety limiting component; the driving part is electrically connected to both the sensing switch and the sensing part.

[0021] In one embodiment, the safety limiting component includes a push rod and a triggering part, and both the push rod and the triggering part are connected to the driving part; the push rod is used for pushing and limiting the pushing part, and the triggering part is used for triggering the sensing part.

[0022] In one embodiment, the push rod and the triggering part are coaxially connected.

[0023] In one embodiment, the triggering part is a cam; and / or both the sensing switch and the sensing part are travel switches.

[0024] This technical solution also provides a switching method, including:

[0025] The locking state of the lock shaft mechanism is the initial state. At this time, the lock tongue of the lock shaft mechanism is in the extended state, and the limiting mechanism is in complete cooperation with the limiting part of the lock shaft mechanism;

[0026] When the system recognizes an external unlocking signal, the limiting mechanism is disengaged from the limiting part;

[0027] The sensing switch senses the position change of the limiting mechanism, and the sensing switch emits a signal in the unlocking state;

[0028] At the same time, the lock shaft mechanism loses the limiting constraint of the limiting mechanism and resets, and the lock tongue retracts. At this time, the lock shaft mechanism is in the unlocking state;

[0029] When locking, an external force pushes the lock shaft mechanism to make the lock tongue extend;

[0030] The limiting mechanism is in complete cooperation with the limiting part;

[0031] The sensing switch senses the position change of the limiting mechanism, and the sensing switch emits a signal in the locking state, and the lock returns to the initial state.

[0032] The switching method of this technical solution ensures that the limiting part and the limiting mechanism are in complete cooperation while triggering the sensing switch, solving the problem that the traditional sensing switch is triggered prematurely or delayed. Description of the Drawings

[0033] The accompanying drawings, which form a part of this application, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0035] Figure 1 Schematic diagram of the unlocking state of the lock described in the embodiment of the present invention;

[0036] Figure 2 Schematic diagram of the opening process of the lock described in the embodiment of the present invention;

[0037] Figure 3 Schematic diagram of the locking state of the lock described in the embodiment of the present invention;

[0038] Figure 4 Three-dimensional view of the locking state of the lock described in the embodiment of the present invention;

[0039] Figure 5 Three-dimensional view of the unlocking state of the lock described in the embodiment of the present invention;

[0040] Figure 6 Explosion diagram of the lock described in the embodiment of the present invention.

[0041] Explanation of reference numerals:

[0042] 10, bottom plate; 11, chute; 12, rotating shaft; 13, locking groove; 20, lock shaft mechanism; 21, lock tongue; 22, limiting part; 23, lock shaft body; 24, reset elastic member; 25, bolt; 30, limiting mechanism; 31, clamping shaft; 311, rotating shaft hole; 312, clamping part; 313, triggering part; 314, pushing part; 32, torsion spring; 40, induction switch; 50, insurance mechanism; 51, insurance limiting component; 511, push rod; 512, triggering member; 53, sensing member. Detailed implementation manners

[0043] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following provides a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0045] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium.

[0047] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0048] As Figures 1 - 6 shown, a lock includes:

[0049] a bottom plate 10;

[0050] The lock shaft mechanism 20 is movably arranged on the bottom plate 10 and includes a lock tongue 21. In the locked state, the lock shaft mechanism 20 extends the lock tongue 21 along the locking direction; in the unlocked state, the lock shaft mechanism 20 retracts the lock tongue 21 along the unlocking direction; a limiting portion 22 is provided on the lock shaft mechanism 20;

[0051] The limiting mechanism 30 is rotatably arranged on the bottom plate 10, cooperates with the limiting portion 22 and is used for limiting the locked state of the lock shaft mechanism 20;

[0052] The induction switch 40 is arranged on the bottom plate 10 and is used for sensing the position of the limiting mechanism 30 and sending out signals of the locked and unlocked states.

[0053] When the lock of this embodiment is in use, it is ensured that while the limiting portion 22 cooperates with the limiting mechanism 30, the induction switch 40 is triggered, solving the problem that the traditional induction switch 40 is triggered in advance or delayed.

[0054] Specifically, the locked state of the lock shaft mechanism 20 is the initial state. At this time, the lock tongue 21 of the lock shaft mechanism 20 extends out of the bottom plate 10, and the limiting mechanism 30 cooperates with the limiting portion 22 of the lock shaft mechanism 20. When the system recognizes an external unlocking signal, the position of the limiting mechanism 30 changes and disengages from the limiting portion 22; the induction switch 40 senses the position change of the limiting mechanism 30, and the induction switch 40 sends out a signal of the unlocked state; at the same time, the lock shaft mechanism 20 loses the limiting constraint of the limiting mechanism 30 and resets, and the lock tongue 21 retracts. At this time, the lock shaft mechanism 20 is in the unlocked state, that is, Figure 1 the state shown.

[0055] When locking, an external force pushes the lock shaft mechanism 20 to make the lock tongue 21 extend out of the bottom plate 10; at this time, the position of the limiting mechanism 30 changes and cooperates with the limiting portion 22; when the cooperation between the limiting portion 22 and the limiting mechanism 30 is completed, the induction switch 40 senses the position change of the limiting mechanism 30, and the induction switch 40 sends out a signal of the locked state, and the lock returns to the initial state.

[0056] The lock of this embodiment further includes a safety mechanism 50. The safety mechanism 50 is arranged on the bottom plate 10 and is electrically connected to the induction switch 40, and is used to provide insurance for the limiting function of the limiting mechanism 30. The safety mechanism 50 of this embodiment provides an additional guarantee for the limitation of the limiting mechanism 30, avoiding the phenomenon that the limiting portion 22 and the limiting mechanism 30 are disengaged when the lock is impacted by an external force, affecting the locking reliability.

[0057] Specifically, the locking state of the lock shaft mechanism 20 is the initial state. At this time, the locking tongue 21 of the lock shaft mechanism 20 extends out of the bottom plate 10, and the limiting mechanism 30 is in complete cooperation with the limiting part 22 of the lock shaft mechanism 20; at the same time, the safety mechanism 50 restricts the limiting mechanism 30; to avoid the phenomenon that the limiting part 22 is disengaged from the limiting mechanism 30 when the lock is impacted by an external force, which affects the locking reliability. When the system recognizes an external unlocking signal, the safety mechanism 50 operates, causing the limiting mechanism 30 to lose the restraint of the safety mechanism 50; the position of the limiting mechanism 30 changes and is disengaged from the limiting part 22; the induction switch 40 senses the change in the position of the limiting mechanism 30, and the induction switch 40 emits a signal indicating the unlocking state; at the same time, the lock shaft mechanism 20 loses the limiting restraint of the limiting mechanism 30 and resets, and the locking tongue 21 retracts. At this time, the lock shaft mechanism 20 is in the unlocking state.

[0058] When locking, an external force pushes the lock shaft mechanism 20, causing the locking tongue 21 to extend out of the bottom plate 10; at this time, the position of the limiting mechanism 30 changes and cooperates with the limiting part 22; when the cooperation between the limiting part 22 and the limiting mechanism 30 is completed, the induction switch 40 senses the change in the position of the limiting mechanism 30, and the induction switch 40 emits a signal indicating the locking state, and the lock returns to the initial state.

[0059] A lock shaft through hole for passing through the lock shaft mechanism 20 is provided on the bottom plate 10 in this embodiment. The lock shaft mechanism 20 can move along the axis direction of the lock shaft through hole, so that the locking tongue 21 extends out of or retracts into the lock shaft through hole to achieve locking and unlocking. Specifically, the bottom plate 10 includes a base plate and a convex portion provided on the base plate. The lock shaft through hole penetrates through the convex portion to form a tunnel-like structure for the lock shaft mechanism 20 to pass through. The limiting mechanism 30, the induction switch 40, and the safety mechanism 50 are all provided on the base plate.

[0060] As Figure 6As shown in the figure, the lock shaft mechanism 20 in this embodiment includes a lock shaft body 23 disposed in the lock shaft through hole, and a reset elastic member 24 connected to the lock shaft body 23 and providing power for the movement of the lock shaft body 23. The limiting portion 22 and the lock tongue 21 are both disposed on the lock shaft body 23. Specifically, the limiting portion 22 is a clamping groove formed in the lock shaft body 23. When the lock is in the locked state, that is, when the limiting portion 22 is in clamping engagement with the limiting mechanism 30, the reset elastic member 24 is in a compressed state. When the limiting portion 22 is disengaged from the limiting mechanism 30, the lock shaft body 23 loses the restraint of the limiting mechanism 30, and the reset elastic member 24 returns from the compressed state to the initial state, providing power for the movement of the lock shaft body 23. The lock shaft body 23 drives the lock tongue 21 to move, so that the lock tongue 21 retracts into the lock shaft through hole, thereby completing the unlocking. On the contrary, when locking is required, an external force is applied to push the lock shaft body 23, so that the lock tongue 21 extends out of the lock shaft through hole, and the limiting portion 22 is in clamping engagement with the limiting mechanism 30, restricting the lock shaft body 23 from retracting. At this time, the reset elastic member 24 returns to the compressed state.

[0061] The lock shaft body 23 in this embodiment is a two - stage stepped shaft, and the reset elastic member 24 is a reset spring; the reset spring is sleeved on the small - diameter section of the two - stage stepped shaft, and the outer diameter of the reset spring is smaller than the outer diameter of the large - diameter end of the two - stage stepped shaft. The inner diameter of the lock - shaft through - hole matches the outer diameter of the large - diameter section, and the first orifice at one end of the lock - shaft through - hole close to the lock tongue 21 matches the outer diameter of the small - diameter section. The reset spring is sleeved on the small - diameter section of the two - stage stepped shaft and is located inside the lock - shaft through - hole. One end of the reset spring abuts against the shoulder of the two - stage step, and the other end abuts against the inner wall of the first orifice. Specifically, when the lock is in the locked state, the reset spring is compressed, and when the lock is in the unlocked state, the reset spring resets. In other embodiments, one end of the reset spring can also be fixedly connected to the shoulder of the two - stage stepped shaft, and the other end is a free end; or, one end of the reset spring is fixedly connected to the inner wall of the second orifice, and the other end abuts against the shoulder; or, both ends of the reset spring are respectively fixedly connected to the shoulder and the inner wall of the second orifice. By adjusting the distance between the shoulder of the two - stage stepped shaft and the first orifice, the compression of the reset spring can be achieved, for example, when locking, an external force pushes the lock shaft body 23. The two - stage stepped shaft is slidably connected to the bottom plate 10 through a pin 25 provided on the large - diameter section; a chute 11 matching the pin 25 is provided on the bottom plate 10, and the length direction of the chute 11 is consistent with the movement direction of the lock shaft body 23. The pin 25 is fixedly inserted through the lock shaft body 23 and can move along the chute 11. Specifically, the pin 25 is a columnar structure, and the axis of the pin 25 is perpendicular to the axis of the lock shaft body 23, that is, the axis of the pin 25 is perpendicular to the movement direction of the lock shaft body 23. The cooperation between the pin 25 and the chute 11 can not only realize the movable connection between the lock shaft body 23 and the bottom plate 10, but also play a guiding role in the movement direction of the lock shaft body 23.

[0062] The clamping groove in this embodiment is provided on the wall surface of the small - diameter section close to the clamping shaft 31 side, and the clamping groove in this embodiment is a square groove. When in the locked state, the clamping groove does not overlap with the reset spring, avoiding interference of the reset spring with the clamping fit between the clamping groove and the limiting mechanism 30; the lock tongue 21 is the free end of the small - diameter section. In other embodiments, the lock tongue 21 can also be set to be connected to the free end of the small - diameter section.

[0063] Please also refer to Figure 2 and Figure 6, in this embodiment, the limiting mechanism 30 includes a clamping shaft 31 provided with a rotating shaft hole 311 and a torsion spring 32 provided at the rotating shaft hole 311 for resetting the clamping shaft 31; a rotating shaft 12 inserted and matched with the rotating shaft hole 311 is provided on the bottom plate 10, and the torsion spring 32 is sleeved on the rotating shaft 12. In this embodiment, the two ends of the torsion spring 32 are respectively hooked on both sides of the clamping shaft 31. In other embodiments, it can also be set that one end of the torsion spring 32 is hooked on the clamping shaft 31 and the other end of the torsion spring 32 is hooked on the bottom plate 10. The clamping shaft 31 includes a clamping portion 312 matched with the card slot, a triggering portion 313 matched with the induction switch 40, and a pushing portion 314 matched with the insurance mechanism 50. The induction switch 40 is a travel switch; the clamping portion 312 is a square rod matched with the square groove. Specifically, when the lock shaft mechanism 20 is in the locked state, the card slot is clamped and matched with the clamping portion 312, the position of the triggering portion 313 changes and triggers the induction switch 40, the induction switch 40 changes from off to on, the induction switch 40 sends a signal to the insurance mechanism 50, and the insurance mechanism 50 acts to restrict the position of the limiting mechanism 30 to prevent the card slot from disengaging from the clamping portion 312. At this time, the torsion spring 32 is in a stressed and twisted state; when the unlocking signal is received, the insurance mechanism 50 removes the restriction on the limiting mechanism 30, the torsion spring 32 resets, drives the clamping shaft 31 to rotate, so that the card slot disengages from the clamping portion 312, the induction switch 40 disengages from the triggering portion 313 and changes from on to off, the lock shaft mechanism 20 loses the limit of the clamping portion 312, and retracts under the action of the return spring, driving the lock tongue 21 to retract into the lock shaft through hole to achieve unlocking. When in the unlocked state, the clamping portion 312 contacts the lock shaft mechanism 20, and at this time, the torsion spring 32 still has a certain torsional force and has not been fully reset. When an external force is pressed to lock the door, due to the vacancy at the card slot, the remaining elastic margin of the torsion spring 32 is exerted, and the reset torsion of the torsion spring 32 drives the clamping shaft 31 to rotate and makes the clamping portion 312 engage with the card slot.

[0064] To avoid affecting the cooperation relationship between the triggering portion 313, the pushing portion 314 and the clamping portion 312 with other components respectively, in this embodiment, the triggering portion 313 and the pushing portion 314 are respectively located at two opposite ends of the clamping portion 312. And, in this embodiment, the triggering portion 313, the pushing portion 314 and the clamping portion 312 are all in the shape of a convex platform or a rod.

[0065] The insurance mechanism 50 described in this embodiment includes an insurance limit component 51 for supporting the pushing part 314, a driving member for driving the insurance limit component 51 to act, and a sensing member 53 for sensing the position of the insurance limit component 51; the driving member is electrically connected to the sensing switch 40 and the sensing member 53. When locking, the card slot 31 cooperates with the clamping part 312, and the triggering part 313 triggers the sensing switch 40. The sensing switch 40 sends a signal to the driving member, and the driving member drives the insurance limit component 51 to act, so that the insurance limit component 51 contacts the pushing part 314 and keeps the card shaft 31 in the current position, ensuring the cooperation between the card slot 31 and the clamping part 312. When the insurance limit component 51 acts in place, the sensing member 53 senses the position of the insurance limit component 51, and the sensing member 53 sends a signal to the driving member, and the driving member stops acting. When unlocking is required, the driving member receives an external unlocking signal and drives the insurance limit component 51 to act, so as to remove the support for the pushing part 314. Thus, the card shaft 31 drives the clamping part 312 to disengage from the card slot under the reset action of the torsion spring 32. When the insurance limit component 51 acts in place, the sensing member 53 senses the position of the insurance limit component 51, and the sensing member 53 sends a signal to the driving member, and the driving member stops acting and returns to the unlocking state.

[0066] Please continue to refer to Figure 3 In this embodiment, the insurance limit component 51 includes a push rod 511 and a triggering member 512. Both the push rod 511 and the triggering member 512 are connected to the driving member; the push rod 511 is used to support the pushing part 314, and the triggering member 512 is used to trigger the sensing member 53. To facilitate the connection between the push rod 511 and the triggering member 512 and the driving member, in this embodiment, the push rod 511 and the triggering member 512 are coaxially connected, and the driving member includes a controller and a motor. The sensing member 53 and the motor are both electrically connected to the controller, and the output shaft of the motor is coaxially connected to the push rod 511 and the triggering member 512. Therefore, the push rod 511 and the triggering member 512 rotate synchronously.

[0067] Specifically, the sensing switch 40, the sensing member 53, and the motor are all connected to the controller. When locking, when the card slot 31 and the clamping part 312 are in place, the triggering part 313 presses the sensing switch 40, and the sensing switch 40 changes from the off state to the on state. The controller receives the signal of the closure of the sensing switch 40 and sends a signal to the motor. The motor drives the triggering member 512 to rotate. When the triggering member 512 rotates to a preset position, it presses the sensing member 53, making the sensing member 53 change from the off state to the on state. The controller receives the signal of the closure of the sensing member 53 and sends a signal to the motor, and the motor stops rotating. At this time, the push rod 511 presses on the card shaft 31, so that the card shaft 31 is maintained in the current position, ensuring the stable cooperation between the card slot 31 and the clamping part 312.

[0068] Specifically, the sensing member 53 is a travel switch, and in order to ensure that the trigger member 512 cooperates with the sensing member 53 during the rotation process to satisfy the two states of contact and non-contact between the trigger member 512 and the sensing member 53, the trigger member 512 in this embodiment is a cam, and the cam is a wear-resistant cam. In addition, the push rod 511 is an L-shaped push rod.

[0069] Taking the figure as an example, the central angle of the convex part of the cam in this embodiment is approximately 240 degrees. When locking, the external force presses the lock shaft body 23, and the clamping part 312 enters the clamping groove through the torque of the torsion spring 32. The induction switch 40 changes from disconnection to closing, and sends a signal to the controller. The controller controls the motor to rotate, and the motor drives the cam and the push rod 511 to rotate counterclockwise until the cam presses the induction member 53. At this time, the cam rotates about 120 degrees, and the induction member 53 changes from disconnection to closing, and sends a signal to the controller. The controller controls the motor to stop rotating, and the locking is completed. At this time, the push rod 511 supports the lower end of the push part 314 to prevent the card shaft 31 from being disengaged under the impact of external force, which plays a safety role.

[0070] When unlocking, the sensing switch 40 and the sensing member 53 are both in the closed state. When the system recognizes an external unlocking signal (code scanning or other input signal), the controller controls the motor to rotate counterclockwise, so that the motor drives the cam and the push rod 511 to rotate counterclockwise. The push rod 511 rotates about 180 degrees, and the card shaft 31 rotates clockwise under the action of the torsion spring 32. The card connection portion 312 disengages from the card slot. Due to the resetting of the reset elastic member 24, the lock shaft body 23 retracts and drives the lock tongue 21 to retract, and the sensing switch 40 changes from the closed state to the open state. At this time, the lock shaft mechanism 20 returns to the unlocking state, and the controller controls the motor to drive the cam to continue to rotate about 90 degrees. The cam leaves the sensing member 53, and the sensing member 53 changes from the closed state to the open state, and sends a signal to the controller. The controller controls the motor to stop driving and waits for the next locking signal.

[0071] like Figure 1 As shown, in this embodiment, the bottom plate 10 is further provided with a locking groove 13 that cooperates with the locking tongue 21. The locking groove 13 is spaced apart from the first opening of the lock shaft through hole. When the locking tongue 21 is extended, the locking tongue 21 is inserted into the locking groove 13 to complete the locking. When the locking tongue 21 is retracted, the locking tongue 21 is separated from the locking groove 13 to complete the unlocking.

[0072] This embodiment also provides a switching method, including:

[0073] The locked state of the shaft locking mechanism 20 is the initial state, at which the locking tongue 21 of the shaft locking mechanism 20 extends out of the shaft locking through hole, and the limiting mechanism 30 cooperates with the limiting portion 22 of the shaft locking mechanism 20, and the safety mechanism 50 constrains the limiting mechanism 30;

[0074] When the system recognizes an external unlocking signal, the insurance mechanism 50 operates, causing the limiting mechanism 30 to lose the restraint of the insurance mechanism 50;

[0075] The limiting mechanism 30 disengages from the limiting portion 22;

[0076] The induction switch 40 senses the position change of the limiting mechanism 30, and the induction switch 40 emits a signal indicating the unlocking state;

[0077] At the same time, the lock shaft mechanism 20 loses the limiting restraint of the limiting mechanism 30 and resets, and the lock tongue 21 retracts into the lock shaft through hole. At this time, the lock shaft mechanism 20 is in the unlocking state;

[0078] When locking, an external force pushes the lock shaft mechanism 20, causing the lock tongue 21 to extend out of the lock shaft through hole;

[0079] The limiting mechanism 30 completes the cooperation with the limiting portion 22;

[0080] The induction switch 40 senses the position change of the limiting mechanism 30, and the induction switch 40 emits a signal indicating the locking state;

[0081] The insurance mechanism 50 receives the signal indicating the locking state and starts to operate, cooperates with the limiting mechanism 30, provides insurance for the limiting mechanism 30, and the lock returns to the initial state.

[0082] The switching method of this embodiment ensures that the induction switch 40 is triggered while the limiting portion 22 is engaged with the limiting mechanism 30, solving the problem that the traditional induction switch 40 is triggered prematurely or delayed. At the same time, the insurance mechanism 50 of this embodiment provides an additional guarantee for the limitation of the limiting mechanism 30, avoiding the phenomenon that the limiting portion 22 and the limiting mechanism 30 are disengaged when the lock is subjected to external impact, affecting the locking reliability.

[0083] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0084] The above embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A lock, characterized in that, it includes: a bottom plate; a lock shaft mechanism, movably arranged on the bottom plate, including a lock tongue. In the locked state, the lock shaft mechanism can extend the lock tongue along the locking direction; In the unlocked state, the lock shaft mechanism retracts the lock tongue along the unlocking direction; a limiting part is arranged on the lock shaft mechanism; a limiting mechanism, rotatably arranged on the bottom plate, cooperating with the limiting part and used for limiting the locked state of the lock shaft mechanism; an induction switch, arranged on the bottom plate, and used for sensing the position of the limiting mechanism and sending out signals of the locked and unlocked states; a lock shaft through hole for passing through the lock shaft mechanism is arranged on the bottom plate, and the lock shaft mechanism can move along the axis direction of the lock shaft through hole, so that the lock tongue extends out of or retracts into the lock shaft through hole; the limiting mechanism includes a clamping shaft provided with a rotating shaft hole and a torsion spring arranged at the rotating shaft hole and used for resetting the clamping shaft; a rotating shaft inserted and cooperated with the rotating shaft hole is arranged on the bottom plate; the lock further includes a safety mechanism, used for providing safety for the limiting function of the limiting mechanism; the limiting part is a clamping groove, the clamping shaft includes a clamping part cooperating with the clamping groove, a triggering part cooperating with the induction switch, and a pushing part cooperating with the safety mechanism; the triggering part and the pushing part are respectively located at two opposite ends of the clamping part; the torsion spring is sleeved on the rotating shaft, and both ends of the torsion spring are respectively hooked on both sides of the clamping shaft, and one end of the torsion spring is located between the clamping part and the triggering part.

2. The lock according to claim 1, characterized in that, the safety mechanism is arranged on the bottom plate and electrically connected with the induction switch.

3. The lock according to claim 1, characterized in that, the lock shaft mechanism includes a lock shaft body inserted into the lock shaft through hole, and a reset elastic member connected to the lock shaft body and providing power for the movement of the lock shaft body, and the limiting part and the lock tongue are both arranged on the lock shaft body.

4. The lock according to claim 3, characterized in that, the lock shaft body is a two-stage stepped shaft, and the reset elastic member is a reset spring; the reset spring is sleeved on the small-diameter section of the two-stage stepped shaft, and the outer diameter of the reset spring is smaller than the outer diameter of the large-diameter section of the two-stage stepped shaft; the limiting part is arranged on the small-diameter section; the lock tongue is the free end of the small-diameter section, or the lock tongue is connected with the free end of the small-diameter section; the two-stage stepped shaft is slidably connected with the bottom plate through a pin arranged on the large-diameter section; a sliding groove cooperating with the pin is arranged on the bottom plate, and the length direction of the sliding groove is consistent with the movement direction of the lock shaft body.

5. The lock according to claim 1, characterized in that, the safety mechanism includes a safety limiting component for pushing the pushing part and limiting the pushing part, a driving member for driving the safety limiting component to act, and a sensing member for sensing the position of the safety limiting component; the driving member is connected with the induction switch and the sensing member.

6. The lock according to claim 5, characterized in that, The insurance limit component includes a push rod and a trigger member, both the push rod and the trigger member are connected to the driving member; the push rod is used to push the abutting portion and limit the abutting portion, and the trigger member is used to trigger the sensing member.

7. A method for operating a lock according to any one of claims 1-6, characterized in that it includes: The locking state of the lock shaft mechanism is the initial state. At this time, the lock tongue of the lock shaft mechanism is in the extended state, and the limiting mechanism is in complete cooperation with the limiting portion of the lock shaft mechanism; When the system recognizes an external unlocking signal, the limiting mechanism is disengaged from the limiting portion; The proximity switch senses the position change of the limiting mechanism, and the proximity switch emits a signal indicating the unlocking state; At the same time, the lock shaft mechanism loses the limiting restraint of the limiting mechanism and resets, and the lock tongue retracts. At this time, the lock shaft mechanism is in the unlocking state; When locking, an external force pushes the lock shaft mechanism to make the lock tongue extend; The limiting mechanism is in complete cooperation with the limiting portion; The proximity switch senses the position change of the limiting mechanism, and the proximity switch emits a signal indicating the locking state, and the lock returns to the initial state.

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