A lock for an intelligent cabinet

Abstract

The application discloses a lock for an intelligent cabinet, which comprises a cabinet door, a lock catch, a lock hook unit, an escapement unit and an escapement unit driving device; the lock hook unit rotates around an A axis; the escapement unit driving device drives the escapement unit to perform an escapement action; the lock hook unit comprises a lock tongue and an escapement arm; in a locking state, the lock tongue is sleeved into the lock catch, and the escapement unit catches the escapement arm, so that the escapement arm moves in a swing range; a lock catch beam is arranged on the cabinet door, and the lock catch is fixed on the lock catch beam; the lock further comprises a top door unit, which applies an elastic pushing force to the lock catch beam, so that the cabinet door has a tendency to be opened; the elastic pushing force is transmitted to the lock tongue through the lock catch, so that the lock hook unit has a tendency to rotate positively around the A axis, and thus the end of the escapement arm is hooked with the escapement unit; the stability of the cabinet door in the locking state is improved, and meanwhile, the cabinet door can be stably and quickly closed in the closing process; the end of the escapement arm generates a pressing force on the escapement groove of the escapement unit, so that the cabinet door avoids the problem of being easily opened when being knocked from the front.

Description

Technical Field

[0001] This invention relates to the field of locks, and more particularly to a lock for a smart cabinet. Background Technology

[0002] Existing battery swapping lockers and parcel lockers are widely used in daily life. During operation, they require an opening command to open the door. However, existing lock structures are too simple and do not consider the usage scenarios of outdoor public and shared spaces, making them prone to various malfunctions and potential asset losses. When there are many people in front of the locker, a sudden opening of the door may injure someone. The door may also hit staff or objects and bounce back, causing the door to close and become impossible to open. Repeated pulling and damaging by non-staff members can damage the door. There is also the possibility of being misled by information to steal valuables from inside the locker. When the door closes quickly, it may bounce back, preventing it from closing stably and quickly. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a lock for a smart cabinet, which increases the stability of the cabinet door in the locked state, and enables the cabinet door to close stably and quickly during the closing process.

[0004] Technical Solution: To achieve the above objectives, the present invention provides a smart cabinet lock, comprising a cabinet door, a latch, a hook unit, an escapement unit, and an escapement unit drive device; the hook unit rotates around axis A, and the escapement unit drive device drives the escapement unit to perform an escapement action; the hook unit includes a bolt and an escapement arm; in the locked state, the bolt engages with the latch, and the escapement unit holds the escapement arm, restricting the escapement arm to move within a swing range; a latch beam is provided on the cabinet door, and the latch is fixed to the latch beam; it also includes a door-top unit, which applies an elastic pushing force to the latch beam, causing the cabinet door to tend to open; the elastic pushing force is transmitted to the bolt through the latch, thereby causing the hook unit to tend to rotate in the positive direction around axis A, thus causing the end of the escapement arm to hook with the escapement unit;

[0005] When the latch moves in the closing direction, it pushes the escape arm, causing the latch unit to rotate in the opposite direction around axis A, and the end of the escape arm disengages from the escape unit. When the escape unit drive is energized while the end of the escape arm is disengaged from the escape unit, the escape unit drive can drive the escape unit to release the escape arm.

[0006] Furthermore, the latch has a U-shaped structure, and the front opening of the latch is fixedly installed on the latch beam, forming a closed structure with the latch beam. In the locked state, the end of the latch is located between the latch bolt and the escape arm. When the latch pushes the escape arm in the closing direction, the latch hook unit rotates in the opposite direction around axis A. When the latch pulls the latch bolt in the opening direction, the latch hook unit rotates in the forward direction around axis A.

[0007] Furthermore, the escapement unit has an escapement groove on the side near the locking hook unit. In the locked state, the end of the escapement arm is in the escapement groove, and the movement of the end of the escapement arm is restricted within the range of the escapement groove, thereby restricting the escapement arm to move within a swing range. When the end of the escapement arm of the locking hook unit moves in the direction of closing the door within the escapement groove, the end of the escapement arm exerts a pressing force on the escapement groove, preventing the escapement arm from escaping the constraint of the escapement groove.

[0008] Furthermore, one end of the escapement groove is provided with a hook, and the other end is provided with a blocking structure; the end of the escapement arm is provided with a latch, the hook corresponds to the latch, and the tendency of the locking hook unit to rotate around the A-axis in the positive direction causes the latch to engage with the hook.

[0009] Furthermore, the escapement unit rotates about axis B.

[0010] Furthermore, the escapement unit is provided with a trigger pressure table, the B-axis is located between the catch hook and the trigger pressure table, and also includes a first micro-switching signal switch, which corresponds to the trigger pressure table. When the escapement unit rotates in the opposite direction around the B-axis, the trigger pressure table presses the rocker arm of the first micro-switching signal switch to close.

[0011] Furthermore, the escapement unit drive device includes an electromagnetic telescoping device, the telescoping part of which is linked to the escapement unit via a linkage rod; when the telescoping part of the electromagnetic telescoping device extends, the escapement unit rotates in the forward direction around the B-axis under the linkage of the linkage rod; when the telescoping part of the electromagnetic telescoping device retracts, the escapement unit rotates in the reverse direction around the B-axis under the linkage of the linkage rod.

[0012] Furthermore, the telescopic part is provided with a guide hole, one end of the linkage rod moves through the guide hole, and the other end of the linkage rod is fixedly connected to the escapement unit.

[0013] Furthermore, the top door unit includes a top rod and a spring, the top rod being parallel to the latch; the top rod has an inner end and an outer end; under the action of the spring, the outer end of the top rod elastically presses against the latch beam, and also includes a second micro-motion signal switch, the inner end of the top rod corresponding to the rocker arm of the second micro-motion signal switch; in the retracted state, the inner end of the top rod presses the rocker arm of the second micro-motion signal switch, causing the second micro-motion signal switch to close; in the extended state, the inner end of the top rod releases the rocker arm of the second micro-motion signal switch, causing the second micro-motion signal switch to open.

[0014] Furthermore, the cabinet door is normally locked. There are two opening states when the door is opened: the first is during peak cabinet usage and the second is during off-peak cabinet usage.

[0015] In the first open state, the electromagnetic expansion joint of the escapement unit drive device is in a weak magnetic force state; the unlocking signal is transmitted to the escapement unit drive device through the transmission line, the escapement unit drive device is energized, and the telescopic part of the electromagnetic expansion joint retracts; under the action of the linkage rod, the escapement unit tends to rotate in the opposite direction around the B axis; in the weak magnetic force state, the driving force of the electromagnetic expansion joint on the escapement unit to rotate in the opposite direction around the B axis through the linkage rod is insufficient to overcome the rotational resistance of the escapement unit to the latch and hook engagement, so the escapement unit does not rotate; at this time, the user pushes the cabinet door, causing the latch to apply a closing force to the escapement arm, causing the latch unit to rotate in the opposite direction around the A axis, and the end of the escapement arm moves in the escapement slot towards the blocking structure, and the latch at the end of the escapement arm disengages from the hook of the escapement unit;

[0016] At this point, the rotational resistance of the escapement unit to the latch and hook engagement disappears. Under weak magnetic force, the electromagnetic expansion joint applies a reverse rotational driving force to the escapement unit around axis B through the linkage rod, causing the escapement unit to rotate in the reverse direction around axis B, thus disengaging the end of the escape arm from the constraint of the escape slot. With the escapement unit releasing the escape arm, the door-opening unit pushes the latch beam to move in the opening direction. The latch beam drives the latch to move in the opening direction, and the latch pulls the bolt, causing the hook unit to rotate in the forward direction around axis A. As a result, the bolt disengages from the latch, and the latch moves away from the hook unit, thus opening the door.

[0017] In the second open state, the electromagnetic expansion joint of the escapement unit drive device is in a strong magnetic force state; the unlocking signal is transmitted to the escapement unit drive device through the transmission line, the escapement unit drive device is energized, and the telescopic part of the electromagnetic expansion joint retracts; under the action of the linkage rod, the escapement unit tends to rotate in the opposite direction around the B axis; under the strong magnetic force state, the driving force of the electromagnetic expansion joint on the escapement unit to rotate in the opposite direction around the B axis through the linkage rod is sufficient to overcome the rotational resistance of the escapement unit to the latch and hook engagement;

[0018] When the escapement unit is under strong magnetic force, the electromagnetic expansion joint applies a driving force to the escapement unit through the linkage rod to rotate it in the opposite direction around the B axis. This causes the escapement unit to rotate in the opposite direction around the B axis, causing the end of the escape arm to disengage from the escape slot. When the escapement unit releases the escape arm, the door-opening unit pushes the latch beam to move in the door-opening direction. The latch beam drives the latch to move in the door-opening direction, and the latch pulls the bolt, causing the hook unit to rotate in the forward direction around the A axis. This causes the bolt to disengage from the latch, and the latch to move away from the hook unit, thus opening the door.

[0019] When closing the cabinet door, pushing the door in the closing direction moves the latch on the door in the closing direction, pushing the escape arm in the closing direction, causing the latch hook unit to rotate in the opposite direction around axis A. The latch tongue engages with the latch as the latch hook unit rotates, so that the end of the latch is between the latch tongue and the escape arm. Simultaneously, the latch beam pushes the push rod of the top door unit in the closing direction, returning the push rod to its retracted state. The inner end of the push rod presses the rocker arm of the second micro-signal switch, closing the second micro-signal switch. The closing of the second micro-signal switch sends a closing signal to the escape unit drive device, energizing it. The telescopic part of the electromagnetic telescoping device extends, and under the action of the linkage rod, the escape unit rotates in the forward direction around axis B, putting the escape unit in the locked state. When the escape unit is in the locked state, the end of the escape arm enters the escape groove, restricting the movement of the end of the escape arm within the range of the escape groove.

[0020] When the force pushing the cabinet door disappears, the top door unit, under the elastic force of the spring, applies an elastic pushing force to the latch beam, which in turn causes the latch beam to exert a pushing force in the opening direction on the latch, and the latch applies a pulling force in the opening direction on the bolt, causing the latch hook unit to rotate in the positive direction around axis A. The end of the escape arm moves to the hook in the escape groove, so that the latch at the end of the escape arm engages with the hook, thus closing the door.

[0021] Beneficial Effects: The lock of the intelligent cabinet of the present invention, in the locked state, restricts the movement of the end of the escape arm of the lock hook unit within the escape groove of the escape unit, providing a buffer area when the cabinet door is closed quickly or violently, preventing rebound and ensuring stable closure; a micro-switching signal switch is provided to detect the opening and closing status of the cabinet door and determine whether the door is opened or closed normally; the escape unit drive device can control the magnetic force of the electromagnetic expander, changing the opening state of the cabinet door by setting the magnetic force state of the electromagnetic expander according to the actual use of the cabinet door; the end of the escape arm is provided with a latch that connects to a hook at one end of the escape groove, making the locking state of the lock more stable, preventing the cabinet door from failing to close, and enabling stable and fast closure; when the end of the escape arm moves in the closing direction within the escape groove, it exerts a pressing force on the escape groove, preventing the cabinet door from being easily opened by frontal impact. Attached Figure Description

[0022] Appendix Figure 1 A schematic diagram of the overall structure of the cabinet door lock;

[0023] Appendix Figure 2 Schematic diagram of the escapement unit;

[0024] Appendix Figure 3 Schematic diagram of the top door unit structure;

[0025] Appendix Figure 4 Schematic diagram of the latch and latch beam;

[0026] Appendix Figure 5 Diagram showing the open / closed state of the cabinet door lock;

[0027] Appendix Figure 6 Diagram showing how to close and open the cabinet door;

[0028] Appendix Figure 7 Schematic diagram of an electromagnetic expansion joint. Detailed Implementation

[0029] The invention will now be further described with reference to the accompanying drawings.

[0030] As attached Figure 1-2 As shown, a smart cabinet lock includes a cabinet door, a latch 32, a hook unit 2, an escapement unit 1, and an escapement unit drive device 4. The hook unit 2 rotates around axis A 23, and the escapement unit drive device 4 drives the escapement unit 1 to perform an escapement action. The hook unit 2 includes a latch 22 and an escapement arm 21. In the locked state, the latch 22 engages with the latch 32, and the escapement unit 1 holds the escapement arm 21, restricting the escapement arm 21 to move within a swing range. A latch beam 31 is provided on the cabinet door, and the latch 32 is fixed to the latch beam 31. It also includes a top door unit 5, which applies an elastic pushing force to the latch beam 31, causing the cabinet door to tend to open. The elastic pushing force is transmitted to the latch 22 via the latch 32, thereby causing the hook unit 2 to tend to rotate in the positive direction around axis A 23, so that the end of the escapement arm 21 hooks with the escapement unit 1.

[0031] The hook unit 2, escape unit 1, escape unit drive device 4 and top door unit 5 are all set inside the lock housing. The lock housing is set on the cabinet of the lock cabinet and corresponds to the latch 32 and latch beam 31 set on the cabinet door. The latch 32 can be accurately fitted into the lock.

[0032] The lock housing is divided into upper and lower housings, which are connected and fixed by pins, screws, studs and shafts; the unlocking signal and power source of the escapement unit drive device 4 are transmitted through the transmission line 9.

[0033] Transmission line 9 is electrically connected to the operation controller of the battery swapping cabinet or express delivery locker in order to receive unlocking signals.

[0034] When the latch 32 moves in the closing direction, it can push the escape arm 21, causing the latch unit 2 to rotate in the opposite direction around axis A 23, and the end of the escape arm 21 disengages from the escape unit 1. When the escape unit drive device 4 is energized while the end of the escape arm 21 is disengaged from the escape unit 1, the escape unit drive device 4 can drive the escape unit 1 to release the escape arm 21.

[0035] When the door is open, the latch 32 pulls the bolt 22 to move in the direction of opening, causing the hook unit 2 to rotate around axis A in the positive direction, causing the bolt 22 to disengage from the latch 32. When the bolt 22 disengages from the latch 32, the hook unit 2 temporarily maintains its current state, so that the gap formed between the bolt 22 and the escape arm 21 opens towards the latch 32.

[0036] The aforementioned reverse rotation and forward rotation are represented in the attached drawings as counterclockwise rotation and clockwise rotation.

[0037] As attached Figure 1-4 As shown, the latch 32 has a U-shaped structure. The front opening of the latch 32 is fixedly installed on the latch beam 31, and the latch 32 and the latch beam 31 form a closed structure. In the locked state, the end of the latch 32 is located between the latch tongue 22 and the escape arm 21. When the latch 32 pushes the escape arm 21 in the closing direction, the latch hook unit 2 rotates in the opposite direction around axis A 23. When the latch 32 pulls the latch tongue 22 in the opening direction, the latch hook unit 2 rotates in the forward direction around axis A 23. The latch beam 31 is provided with screw holes, and the latch beam 31 is fixedly installed on the cabinet door by screws.

[0038] As attached Figure 2 As shown, the escapement unit 1 has an escapement groove 15 on the side near the locking hook unit 2. In the locked state, the end of the escapement arm 21 is in the escapement groove 15, and the movement of the end of the escapement arm 21 is restricted within the range of the escapement groove 15, thereby restricting the escapement arm 21 to move within a swing range. When the end of the escapement arm 21 of the locking hook unit 2 moves in the closing direction within the escapement groove 15, the end of the escapement arm 21 exerts a pressing force on the escapement groove 15, preventing the escapement arm 21 from escaping the constraint of the escapement groove 15.

[0039] When someone violently strikes or pushes the cabinet door, the latch 32 on the cabinet door vibrates. The latch 32 pushes the hook unit 2 to rotate in the opposite direction around axis A 23, causing the end of the escape arm 21 to move in the escape groove towards the closing direction. The end of the escape arm 21 gradually exerts a clamping force on the escape groove 15. The clamping force prevents the escape unit 1 from rotating in the opposite direction around axis B 14, preventing the escape arm 21 from escaping the constraint of the escape groove 15. The escape unit 1 will not release the escape arm 21, thus preventing the cabinet door from opening.

[0040] Meanwhile, the escapement groove 15 provides a buffer zone for the escapement arm 21 to close, so even if the cabinet door is closed forcefully and quickly, it will not damage the lock; during the rapid movement of the escapement arm 21, it will touch the blocking structure 12, which provides a buffer for the escapement arm 21; when unauthorized personnel forcefully push or pull the cabinet door, it will not be easy to open the cabinet door.

[0041] As attached Figure 2As shown, one end of the escapement groove 15 is provided with a hook 11, and the other end is provided with a blocking structure 12; the end of the escapement arm 21 is provided with a latch 24, the hook 11 corresponds to the latch 24, and the locking hook unit 2 rotates around the A-axis 23 in the positive direction, so that the latch 24 hooks with the hook 11.

[0042] During vibration, the engagement between the latch 24 and the hook 11 provides a locking force to counteract the abnormal door opening caused by vibration.

[0043] As attached Figure 2 As shown, the escapement unit 1 rotates around axis B 14.

[0044] As attached Figure 2 As shown, the escapement unit 1 is provided with a trigger pressure table 13, the B-axis 14 is located between the hook 11 and the trigger pressure table 13, and also includes a first micro-switching signal switch 7, which corresponds to the trigger pressure table 13. The escapement unit 1 rotates in the opposite direction around the B-axis 14, and the trigger pressure table 13 presses the rocker arm of the first micro-switching signal switch 7 to close.

[0045] As attached Figure 1 As shown, the escapement unit drive device 4 includes an electromagnetic telescoping device 30. The telescoping part 20 of the electromagnetic telescoping device 30 is linked to the escapement unit 1 via a linkage rod 10. When the telescoping part 20 of the electromagnetic telescoping device 30 extends, the escapement unit 1 rotates in the forward direction around the B-axis 14 under the linkage of the linkage rod 10. When the telescoping part 20 of the electromagnetic telescoping device 30 retracts, the escapement unit 1 rotates in the reverse direction around the B-axis 14 under the linkage of the linkage rod 10.

[0046] As attached Figure 6-7 As shown, the telescopic part 20 is provided with a guide hole 201, one end of the linkage rod 10 moves through the guide hole 201, and the other end of the linkage rod 10 is fixedly connected to the escapement unit 1.

[0047] A limit structure 8 is provided at the fixed connection between the escapement unit 1 and the linkage rod 10. When the escapement unit 1 rotates around the B axis 14 and presses against the limit structure 8, the escapement unit 1 is in a locked state.

[0048] As attached Figure 3As shown, the top door unit 5 includes a top rod 51 and a spring 52. The top rod 51 is parallel to the latch 32. The top rod 51 has an outer end 511 and an inner end 512. Under the action of the spring 52, the outer end 511 of the top rod 51 elastically presses against the latch beam 31. It also includes a second micro-motion signal switch 6. The inner end 512 of the top rod 51 corresponds to the rocker arm of the second micro-motion signal switch 6. When the top rod 51 is retracted, the inner end 512 of the top rod 51 presses the rocker arm of the second micro-motion signal switch 6, causing the second micro-motion signal switch 6 to close. When the top rod 51 is extended, the inner end 512 of the top rod 51 releases the rocker arm of the second micro-motion signal switch 6, causing the second micro-motion signal switch 6 to open.

[0049] The lock housing is provided with a guide structure for the push rod 51, and the guide structure is provided with a through hole through which the push rod 51 slides. A spring blocking structure is fixedly provided on the push rod 51, and a spring 52 is sleeved on the push rod 51 and is located between the spring blocking structure and the guide structure. When the spring 52 is compressed, the spring 52 applies a spring force in the opening direction to the push rod 51 through the spring blocking structure and the guide structure.

[0050] Both the closing and opening of the first micro-signal switch 7 and the second micro-signal switch 6 can send signals.

[0051] Under normal circumstances, the cabinet door is locked. There are two opening situations when the door is opened: the first opening situation is during peak cabinet usage, and the second opening situation is during off-peak cabinet usage.

[0052] As attached Figure 1-4 As shown, in the first open state, the magnetic force of the electromagnetic telescoping device 30 of the escapement unit drive device 4 is in a weak magnetic force state; the unlocking signal is transmitted to the escapement unit drive device 4 through the transmission line 9, the escapement unit drive device 4 is energized, and the telescoping part 20 of the electromagnetic telescoping device 30 retracts; under the action of the linkage rod 10, the escapement unit 1 tends to rotate in the opposite direction around the B axis 14; in the weak magnetic force state, the driving force of the electromagnetic telescoping device 30 to rotate in the opposite direction around the B axis 14 applied to the escapement unit 1 by the linkage rod 10 is insufficient to overcome the rotational resistance of the escapement unit 1 to the latch 24 and the hook 11, so the escapement unit 1 does not rotate; at this time, the user pushes the cabinet door, so that the latch 32 applies a force in the closing direction to the escapement arm 21, so that the latch hook unit 2 rotates in the opposite direction around the A axis 23, and the end of the escapement arm 21 moves in the direction of the blocking structure 12 in the escapement groove 15, and the latch 24 at the end of the escapement arm 21 disengages from the hook 11 of the escapement unit 1;

[0053] At this time, the rotational resistance of the escapement unit 1 to the latch 24 and hook 11 disappears. Under the weak magnetic force, the electromagnetic expansion joint 30 applies a driving force to the escapement unit 1 to rotate in the opposite direction around the B-axis 14 through the linkage rod 10, thereby causing the escapement unit 1 to rotate in the opposite direction around the B-axis 14, so that the end of the escapement arm 21 is released from the constraint of the escapement slot 15. When the escapement unit 1 releases the escapement arm 21, the top door unit 5 pushes the latch beam 31 to move in the opening direction. The latch beam 31 drives the latch 32 to move in the opening direction. The latch 32 pulls the bolt 22, so that the hook unit 2 rotates in the forward direction around the A-axis 23. Then the bolt 22 disengages from the latch 32, and the latch 32 moves away from the hook unit 2, thus opening the door.

[0054] As attached Figure 1-4 As shown, in the second open state, the electromagnetic telescoping device 30 of the escapement unit drive device 4 is in a strong magnetic state; the unlocking signal is transmitted to the escapement unit drive device 4 through the transmission line 9, the escapement unit drive device 4 is energized, and the telescoping part 20 of the electromagnetic telescoping device 30 retracts; under the action of the linkage rod 10, the escapement unit 1 tends to rotate in the opposite direction around the B-axis 14; under the strong magnetic state, the driving force of the electromagnetic telescoping device 30 to rotate in the opposite direction around the B-axis 14 applied to the escapement unit 1 by the linkage rod 10 is sufficient to overcome the rotational resistance of the escapement unit 1 caused by the engagement of the latch 24 and the hook 11.

[0055] When the escapement unit 1 is under strong magnetic force, the electromagnetic expansion joint 30 applies a driving force to the escapement unit 1 through the linkage rod 10 to rotate it in the opposite direction around the B-axis 14, thereby causing the escapement unit 1 to rotate in the opposite direction around the B-axis 14, and causing the end of the escape arm 21 to disengage from the constraint of the escape groove 15; when the escapement unit 1 releases the escape arm 21, the door-opening unit 5 pushes the latch beam 31 to move in the door-opening direction, the latch beam 31 drives the latch 32 to move in the door-opening direction, the latch 32 pulls the bolt 22, causing the hook unit 2 to rotate in the forward direction around the A-axis 23, thereby disengaging the bolt 22 from the latch 32, and moving the latch 32 away from the hook unit 2, thus opening the door;

[0056] As attached Figure 1-4As shown, when closing the cabinet door, pushing the cabinet door in the closing direction causes the latch 32 on the cabinet door to move in the closing direction, pushing the escape arm 21 in the closing direction, causing the latch unit 2 to rotate in the opposite direction around axis A 23. The latch 22, as the latch unit 2 rotates, engages with the latch 32, so that the end of the latch 32 is between the latch 22 and the escape arm 21. Simultaneously, the latch beam 31 pushes the push rod 51 of the top door unit 5 in the closing direction, causing the push rod 51 to return to the retracted state, and the inner end 512 of the push rod 51 presses down. The rocker arm of the second micro-signal switch 6 closes; the closing of the second micro-signal switch 6 sends a door-closing signal to the escapement unit drive device 4, energizing it. The telescopic part 20 of the electromagnetic telescoping device 30 extends, and under the action of the linkage rod 10, the escapement unit 1 rotates in the forward direction around the B-axis 14, putting the escapement unit 1 in a locked state; when the escapement unit 1 is in a locked state, the end of the escapement arm 21 enters the escapement groove 15, restricting the movement of the end of the escapement arm 21 within the range of the escapement groove 15.

[0057] When the force pushing the cabinet door disappears, the top door unit 5, under the elastic force of the spring 52, applies an elastic pushing force to the latch beam 31, which in turn causes the latch beam 31 to exert a pushing force on the latch 32 in the opening direction. The latch 32 applies a pulling force on the latch tongue 22 in the opening direction, causing the latch hook unit 2 to rotate in the positive direction around the A-axis 23. The end of the escape arm 21 moves to the latch hook 11 in the escape groove 15, so that the latch 24 at the end of the escape arm 21 engages with the latch hook 11, thereby closing the door.

[0058] Example 1

[0059] Self-service lockers such as battery swapping cabinets and parcel lockers are equipped with cameras that monitor the surrounding area. When a large number of users are detected nearby, it indicates peak usage. Due to this, a sudden opening of the locker door could potentially injure a user, causing accidental injury. Furthermore, if the door bounces off an object after opening, it might close completely, preventing it from being reopened. Simultaneous opening of the door could also lead to other users mistakenly taking items from inside. Therefore, electromagnetic expansion joints are used to mitigate this risk. When the magnetic force of the electromagnetic expansion joint 30 is in a weak magnetic state, the driving force applied by the electromagnetic expansion joint 30 to the escapement unit 1 through the linkage rod 10 to rotate in the opposite direction around the B axis 14 is insufficient to overcome the rotational resistance of the escapement unit 1 to the engagement of the latch 24 and the hook 11. The cabinet door cannot be opened directly and the user needs to push the cabinet door to disengage the latch 24 of the escapement arm 21 from the hook 11 of the escapement unit 1, and the escapement unit 1 releases the escapement arm 21. In the state where the escapement unit 1 releases the escapement arm 21, the top door unit 5 pushes the lock beam 31 away from the lock, thereby opening the cabinet door.

[0060] When it is detected that there are few users near the self-service locker, such as fewer than three people; with few users, the locker door will open directly without other people accidentally taking the items inside, indicating that the locker or express delivery locker is in a low-peak usage period; therefore, the electromagnetic expansion joint 30 is in a strong magnetic state, and the driving force applied by the electromagnetic expansion joint 30 to the escapement unit 1 via the linkage rod 10 to rotate in the opposite direction around the B-axis 14 is sufficient to overcome the rotational resistance of the escapement unit 1 to the engagement of the latch 24 and the hook 11, and the locker door will open directly, making it convenient for users to take the items inside.

[0061] When the cabinet door is closed, the user pushes the cabinet door in the closing direction. The latch 32 pushes the escape arm 21 in the closing direction, causing the locking hook unit 2 to rotate in the opposite direction around axis A 23. When the end of the escape arm 21 on the locking hook unit 2 exceeds the latch 11 of the escape unit 1, the push rod 51 of the top door unit 5 reaches the retracted state. The inner end 512 of the push rod 51 presses the second micro-motion signal switch 6 to close and send a closing signal. The closing signal is input to the escape unit drive device 4. The escape unit drive device 4 is energized. The electromagnetic telescopic device 30 applies a driving force to the escape unit 1 through the linkage rod 10 to rotate in the forward direction around axis B 14, causing the escape unit 1 to rotate in the forward direction around axis B to the locked state. After the thrust disappears, the latch 24 at the end of the escape arm 21 engages with the latch 11 again, closing the cabinet door.

[0062] Example 2

[0063] When the cabinet door is opened, the first micro-switch 7 is in the closed state, sending an open signal, and the second micro-switch 6 is in the open state, also sending an open signal. Since both the open and unlock signals from the first and second micro-switches are sent, it is determined that the cabinet door is normally open.

[0064] When the cabinet door is closed, the first micro-switch 7 is in the open state, sending a locking signal, and the second micro-switch 6 is in the closed state, sending a closing signal. Based on the fact that the first micro-switch 7 is in the open state sending a locking signal and the second micro-switch 6 is in the closed state sending a closing signal, it can be determined that the cabinet door is normally locked.

[0065] The above two situations represent normal open and closed states. If the locker door is not in either of these two states, it has been forcibly and illegally opened, and the locker will send an early warning signal to the monitoring center.

[0066] The above are the preferred embodiments described in this invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention.

Claims

1. A lock for an intelligent cabinet, characterized by: The cabinet door, the lock catch (32), the lock hook unit (2), the escapement unit (1) and the escapement unit driving device (4) are included; the lock hook unit (2) rotates around the A axis (23), the escapement unit driving device (4) drives the escapement unit (1) to make the escapement action, the lock hook unit (2) includes the lock tongue (22) and the escapement arm (21); in the locked state, the lock tongue (22) is sleeved into the lock catch (32), and the escapement unit (1) catches the escapement arm (21), so that the escapement arm (21) is limited to move in a swing interval; the cabinet door is provided with the lock catch beam (31), and the lock catch (32) is fixed on the lock catch beam (31); further comprising a top door unit (5), the top door unit (5) exerts elastic pushing force on the lock catch beam (31), so that the cabinet door has a tendency to open the door, the elastic pushing force is transmitted to the lock tongue (22) through the lock catch (32), so that the lock hook unit (2) has a tendency to rotate around the A axis (23) in the positive direction, so that the end of the escapement arm (21) is hooked with the escapement unit (1); When the lock catch (32) moves towards the door closing direction, the escapement arm (21) can be pushed, so that the lock hook unit (2) rotates around the A axis (23) in the reverse direction, and the end of the escapement arm (21) is disconnected from the escapement unit (1); in the state that the end of the escapement arm (21) is disconnected from the escapement unit (1), when the escapement unit driving device (4) is energized, the escapement unit driving device (4) can drive the escapement unit (1) to release the escapement arm (21); The escapement unit (1) is provided with an escapement groove (15) on the side close to the lock hook unit (2), in the locked state, the end of the escapement arm (21) is in the escapement groove (15), and the movement of the end of the escapement arm (21) is limited in the range of the escapement groove (15), so that the escapement arm (21) is limited to move in a swing interval; One end of the escapement groove (15) is provided with a hook (11), and the other end is provided with a blocking structure (12); the end of the escapement arm (21) is provided with a socket (24), the hook (11) corresponds to the socket (24), and the lock hook unit (2) rotates around the A axis (23) in the positive direction, so that the socket (24) is hooked with the hook (11); The escapement unit (1) rotates around the B axis (14); The escapement unit driving device (4) includes an electromagnetic telescopic device (30), the telescopic part (20) of the electromagnetic telescopic device (30) is connected with the escapement unit (1) through a linkage rod (10); when the telescopic part (20) of the electromagnetic telescopic device (30) is extended, the escapement unit (1) rotates around the B axis (14) in the positive direction under the linkage of the linkage rod (10); when the telescopic part (20) of the electromagnetic telescopic device (30) is retracted, the escapement unit (1) rotates around the B axis (14) in the reverse direction under the linkage of the linkage rod (10); In normal state, the cabinet door is in the locked state, when opening the door, there are two opening conditions, the first opening condition is the cabinet body peak use period, and the second opening condition is the cabinet body low peak use period; In the first open state, the magnetic force of the electromagnetic expander (30) of the escapement unit driving device (4) is in a weak magnetic state; the unlocking signal is transmitted to the escapement unit driving device (4) through the transmission line (9), the escapement unit driving device (4) is powered on, and the telescopic part (20) of the electromagnetic expander (30) is retracted; under the action of the linkage rod (10), the escapement unit (1) has a tendency to rotate reversely around the B-axis (14); in the weak magnetic state, the driving force of the electromagnetic expander (30) on the escapement unit (1) through the linkage rod (10) to rotate reversely around the B-axis (14) is not enough to overcome the rotation resistance of the escapement unit (1) caused by the hooking of the notch (24) and the hook (11); at this time, the user pushes the cabinet door to make the lock catch (32) apply a door closing direction force to the escapement arm (21), so that the lock hook unit (2) rotates reversely around the A-axis (23), the end of the escapement arm (21) moves to the blocking structure (12) in the escapement groove (15), and the notch (24) of the end of the escapement arm (21) is separated from the hook (11) of the escapement unit (1); At this time, the rotation resistance of the escapement unit (1) caused by the hooking of the notch (24) and the hook (11) disappears, the escapement unit (1) is in a weak magnetic state, the driving force of the electromagnetic expander (30) on the escapement unit (1) through the linkage rod (10) to rotate reversely around the B-axis (14), so that the escapement unit (1) rotates reversely around the B-axis (14), and the end of the escapement arm (21) is separated from the constraint of the escapement groove (15); in the state that the escapement unit (1) releases the escapement arm (21), the top door unit (5) pushes the lock catch beam (31) to move to the door opening direction, the lock catch beam (31) drives the lock catch (32) to move to the door opening direction, the lock catch (32) pulls the lock bolt (22), so that the lock hook unit (2) rotates positively around the A-axis (23), and then the lock bolt (22) is separated from the lock catch (32), the lock catch (32) is away from the lock hook unit (2), and the door is opened; In the second open state, the magnetic force of the electromagnetic expander (30) of the escapement unit driving device (4) is in a strong magnetic state; the unlocking signal is transmitted to the escapement unit driving device (4) through the transmission line (9), the escapement unit driving device (4) is powered on, and the telescopic part (20) of the electromagnetic expander (30) is retracted; under the action of the linkage rod (10), the escapement unit (1) has a tendency to rotate reversely around the B-axis (14); in the strong magnetic state, the driving force of the electromagnetic expander (30) on the escapement unit (1) through the linkage rod (10) to rotate reversely around the B-axis (14) is enough to overcome the rotation resistance of the escapement unit (1) caused by the hooking of the notch (24) and the hook (11); The escapement unit (1) is in a state of strong magnetic force, and the electromagnetic expander (30) applies a driving force to the escapement unit (1) through the linkage rod (10) to rotate the escapement unit (1) in the reverse direction around the B-axis (14), so that the end of the escapement arm (21) is released from the constraint of the escapement groove (15); in the state that the escapement unit (1) releases the escapement arm (21), the top door unit (5) pushes the lock catch beam (31) to move in the door opening direction, the lock catch beam (31) drives the lock catch (32) to move in the door opening direction, the lock catch (32) pulls the lock bolt (22), the lock hook unit (2) rotates in the positive direction around the A-axis (23), and then the lock bolt (22) is separated from the lock catch (32), the lock catch (32) is away from the lock hook unit (2), and the door is opened; When closing the door, the cabinet door is pushed to move in the door closing direction, so that the lock catch (32) on the cabinet door moves in the door closing direction, the escapement arm (21) is pushed to move in the door closing direction, the lock hook unit (2) rotates in the reverse direction around the A-axis (23), the lock bolt (22) is sleeved into the lock catch (32) along with the rotation of the lock hook unit (2), and the end of the lock catch (32) is between the lock bolt (22) and the escapement arm (21); at the same time, the lock catch beam (31) pushes the top rod (51) of the top door unit (5) to move in the door closing direction, so that the top rod (51) returns to the retracted state, the inner end (512) of the top rod (51) presses the second micro-signal switch (6), and the second micro-signal switch (6) is closed; the second micro-signal switch (6) sends a door closing signal to the escapement unit driving device (4) to be energized, the telescopic part (20) of the electromagnetic expander (30) is extended, the escapement unit (1) rotates in the positive direction around the B-axis (14) under the action of the linkage rod (10), and the escapement unit (1) is in the locked state; when the escapement unit (1) is in the locked state, the end of the escapement arm (21) enters the escapement groove (15), and the movement of the end of the escapement arm (21) is limited within the range of the escapement groove (15); When the force pushing the cabinet door disappears, the top door unit (5) applies an elastic pushing force to the lock catch beam (31) under the elastic force of the spring (52), so that the lock catch beam (31) has a pushing force in the door opening direction on the lock catch (32), the lock catch (32) applies a pulling force in the door opening direction on the lock bolt (22), the lock hook unit (2) rotates in the positive direction around the A-axis (23), and the end of the escapement arm (21) moves to the hook (11) in the escapement groove (15), so that the hook (24) at the end of the escapement arm (21) is hooked with the hook (11), and the door is closed.

2. The lock for a smart cabinet of claim 1, wherein: The lock catch (32) is in a U-shaped structure, the front end opening of the lock catch (32) is fixedly installed on the lock catch beam (31), and the lock catch (32) and the lock catch beam (31) form a closed structure; in the locked state, the tail end of the lock catch (32) is between the lock tongue (22) and the escapement arm (21); when the lock catch (32) pushes the escapement arm (21) in the door closing direction, the lock hook unit (2) rotates reversely around the A shaft (23); when the lock catch (32) pulls the lock tongue (22) in the door opening direction, the lock hook unit (2) rotates forwardly around the A shaft (23).

3. The lock for a smart cabinet of claim 1, wherein: The escapement unit (1) is provided with a trigger pressure platform (13), the B shaft (14) is located between the clasp (11) and the trigger pressure platform (13), and the escapement unit (1) further comprises a first micro-motion signal switch (7) corresponding to the trigger pressure platform (13), and the trigger pressure platform (13) presses the flap of the first micro-motion signal switch (7) to be closed when the escapement unit (1) rotates reversely around the B shaft (14).

4. The lock for a smart cabinet of claim 1, wherein: The telescopic part (20) is provided with a guide hole (201), one end of the linkage rod (10) is movably arranged through the guide hole (201), and the other end of the linkage rod (10) is fixedly connected with the escapement unit (1).

5. The lock for a smart cabinet of claim 1, wherein: The top door unit (5) comprises a top rod (51) and a spring (52), the top rod (51) is parallel to the lock catch (32); the two ends of the top rod (51) comprise an outer end (511) and an inner end (512); under the action of the spring (52), the outer end (511) of the top rod (51) elastically abuts against the lock catch beam (31), and the top door unit (5) further comprises a second micro-motion signal switch (6), the inner end (512) of the top rod (51) corresponds to the flap of the second micro-motion signal switch (6); in the retracted state of the top rod (51), the inner end (512) of the top rod (51) presses the flap of the second micro-motion signal switch (6), so that the second micro-motion signal switch (6) is closed; in the extended state of the top rod (51), the inner end (512) of the top rod (51) releases the flap of the second micro-motion signal switch (6), so that the second micro-motion signal switch (6) is disconnected.

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