Electronic lock capable of being unlocked in emergency

Abstract

The utility model provides an electronic lock capable of being unlocked in emergency, and relates to the technical field of lock structures. The system comprises a motor driving module, an emergency unlocking device, a door state sensing module and a transmission protection design. A motor drives a gear set to be matched with a torsional spring to achieve unlocking and locking, an emergency wrench mechanical emergency unlocking mode is provided, and emergency unlocking is achieved when electric control faults occur. The structure can be simplified, the cost is reduced, the knocking unlocking risk is avoided, the safety and reliability of the lock are improved, and the lock is suitable for various installation environments and has high practical value and market prospects.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of lock structure, specifically, relates to an electronic lock of emergency unlocking. BACKGROUND

[0002] In the field of opening door cabinet lock, the emergency unlocking function is usually realized by using pull rod form or adding a mechanical lock core. The pull rod form is often used for the cabinet lock matched with the electromagnet, and the structure is simple and the cost is low. However, the stroke of the lock bar and other moving parts is limited, which may easily lead to the problem of knocking to unlock in actual use. Adding a mechanical lock core can better ensure the safety of the lock. However, the structure is complex, and there are many parts, which may easily lead to poor overall reliability of the lock and high cost. The above two common emergency unlocking realization modes are difficult to simultaneously consider the structure simplicity, low cost and safety of the lock. CONTENT OF THE UTILITY MODEL

[0003] The utility model discloses an electronic lock of emergency unlocking, aims at solving the above-mentioned problem.

[0004] The utility model adopts the following scheme:

[0005] An electronic lock of emergency unlocking, including the shell and the motor drive module, gear transmission module, emergency unlocking device and locking module set in the shell, the motor drive module is used for receiving the unlocking signal of central control system and completes the lock and unlock action through the motor drive gear group, the gear transmission module includes primary gear, torsional spring gear, the primary gear is connected to the motor drive module, the torsional spring gear is connected the locking module through torsional spring, the primary gear is suitable for driving the torsional spring gear positive rotation or reverse rotation under the drive of the motor drive module, to drive the locking module realizes the locking or unlocking, the emergency unlocking device includes emergency wrench, the emergency wrench is suitable for inserting in the shell from the shell exterior to drive the gear transmission module rotates and unlocks.

[0006] Further, the emergency wrench is suitable for matching connection with the torsional spring gear to drive the torsional spring gear to rotate from the shell exterior.

[0007] Further, the primary gear is connected in the shell through the gear spring, and the primary gear is suitable for moving in the shell to be coupled to the motor drive module or decoupled from the motor drive module, when the primary gear is decoupled from the motor drive module, it is suitable for driving the torsional spring gear to rotate through the emergency wrench.

[0008] Further, the shell is provided with a first opening corresponding to the rotating shaft of the primary gear, through which the primary gear compresses the gear spring, thereby driving the primary gear to decouple from the motor drive module; the shell is also provided with a second opening suitable for the insertion of the emergency wrench.

[0009] Further, the primary gear and the torsion spring gear are provided with a driven gear; the driven gear is connected with a feedback module to detect the on-off state of the electronic lock.

[0010] Further, the feedback module includes a magnet provided on the driven gear and a Hall sensor provided in the shell, the driven gear is adapted to move the magnet when the primary gear rotates, and the position of the magnet is sensed by the Hall sensor to feedback the on-off state of the electronic lock.

[0011] Further, the locking module includes a driving block and a lock bar connected to the driving block, and one end of the torsion spring is connected to the driving block.

[0012] Further, the emergency unlocking device further includes an emergency pull rod connected to the driving block, and one end of the emergency pull rod extends out of the shell; by pulling the emergency pull rod from outside the shell, the driving block can be driven to move, thereby driving the lock bar to unlock; the emergency pull rod is provided with a return spring to facilitate the return of the emergency pull rod.

[0013] Further, it further includes a door state sensing module, the door state sensing module includes a sensing piece provided on the lock catch and a sensing module provided in the shell and matched with the sensing piece.

[0014] Further, when the lock is in the closed state, the primary gear is coupled with the motor drive module and is in the self-locking state, and there is a pre-tightening force between the torsion spring and the locking module.

[0015] Advantages:

[0016] The utility model realizes the following technical effects by optimizing the transmission design and multiple safety protection mechanisms:

[0017] 1. The gear transmission module is driven to rotate by the emergency wrench to achieve emergency unlocking, ensuring reliable unlocking in the event of electronic control failure; the risk of knocking to unlock is avoided by the compression force of the torsion spring and the self-locking of the primary gear and the motor drive module, significantly improving the safety of the lock.

[0018] 2. The electronic lock avoids the complexity and high cost problems caused by the traditional pull rod form or the addition of a mechanical lock core by simplifying the transmission structure, making the overall structure more compact and easy to manufacture.

[0019] 3. The door state is inducted by the IC tag, and the false closing information is effectively prevented.

[0020] 4. Further, two mechanical emergency unlocking modes (emergency pull rod and emergency wrench) are provided, which are suitable for different installation environments and ensure that the lock can be reliably unlocked when the electric control fails. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic diagram of the appearance structure of an electronic lock with emergency unlocking according to an embodiment of the present application;

[0022] Figure 2 is a schematic diagram of the exploded structure of an electronic lock with emergency unlocking according to an embodiment of the present application;

[0023] Figure 3 is a schematic diagram of the structure of an electronic lock with emergency unlocking when the electronic lock is locked according to an embodiment of the present application;

[0024] Figure 4 is a schematic diagram of the structure of an electronic lock with emergency unlocking when the electronic lock is unlocked according to an embodiment of the present application; Figure 3 is a schematic diagram of the cross-sectional structure at A-A in the electronic lock with emergency unlocking according to an embodiment of the present application;

[0025] Figure 5 is a schematic diagram of the structure of an electronic lock with emergency unlocking when the electronic lock is unlocked according to an embodiment of the present application;

[0026] Figure 6 is a schematic diagram of the structure of an electronic lock with emergency unlocking when the emergency pull rod is unlocked according to an embodiment of the present application;

[0027] Figure 7 is a schematic diagram of the structure of an electronic lock with emergency unlocking when the emergency wrench is unlocked according to an embodiment of the present application;

[0028] Figure 8 is a schematic diagram of the cross-sectional structure at B-B in the electronic lock with emergency unlocking according to an embodiment of the present application; Figure 7

[0029] Reference signs: shell 1, first opening 11, second opening 12, lock catch 2, motor drive module 3, motor 31, worm 32, gear set 4, primary gear 41, torsional spring gear 42, driven gear 43, gear spring 44, emergency pull rod 51, return spring 52, emergency wrench 53, locking module 6, locking beam 61, driving block 62, torsional spring 63, door state induction module 7, IC tag 71, card swiping plate 72, feedback module 8, Hall sensor 81, magnet 82, control panel 9. DETAILED DESCRIPTION

[0030] Embodiment 1

[0031] In combination with Figures 1 to 8 ​As shown, the embodiment discloses an emergency unlocking electronic lock, which comprises a shell 1, a motor driving module 3, a gear transmission module, an emergency unlocking device and a locking module 6 arranged in the shell 1; the motor driving module 3 is used for receiving an unlocking signal of a central control system and driving a gear set 4 through a motor 31 to complete a locking and unlocking action; the gear transmission module comprises a primary gear 41 and a torsional spring gear 42; the primary gear 41 is connected to the motor driving module 3, and the torsional spring gear 42 is connected to the locking module 6 through a torsional spring 63; the primary gear 41 is adapted to drive the torsional spring gear 42 to rotate forward or reversely under the driving of the motor driving module 3, so as to drive the locking module 6 to realize locking or unlocking; the emergency unlocking device comprises an emergency wrench 53, which is adapted to be inserted into the shell 1 from outside of the shell 1 to drive the gear transmission module to rotate and unlock.

[0032] By setting the torsional spring 63 to provide a pre-tightening force, the risk of abnormal unlocking of the lock due to knocking and vibration can be effectively avoided; by setting the emergency wrench 53 to drive the gear transmission module to rotate, emergency unlocking can be realized, and at the same time, a lock state signal can be synchronously fed back.

[0033] Embodiment 2

[0034] In combination with the drawings, the embodiment provides an emergency unlocking electronic lock, which solves the technical problem that the prior art is difficult to balance the structure simplicity, low cost and lock safety by combining electronic control unlocking, two kinds of mechanical emergency unlocking modes and a door state sensing module.

[0035] In combination with Figures 1 to 3As shown, specifically, the electronic lock includes a motor drive module 3, an emergency unlocking device, a door state sensing module 7, and a feedback module 8. The motor drive module 3 includes a rotating motor 31, a worm 32 connected to the rotating shaft of the rotating motor 31, and a gear set 4. When the lock receives an unlocking signal from the central control system, the motor 31 starts and drives the gear set 4 to rotate. The gear set 4 drives the driving block 62 and the lock bar 61 to complete the locking and unlocking action through the torsional spring 63. During the locking process, the gear set 4 first pushes the driving block 62 and the lock bar 61 into place, and then continues to rotate for a short distance to compress the torsional spring 63. The compression of the torsional spring 63 eliminates the impact on the motor 31 and the gear set 4 due to rigid collision, and provides a buffer force for subsequent actions. The gear set 4 includes a primary gear 41, a torsional spring gear 42, and at least one driven gear 43 connecting the primary gear 41 and the torsional spring gear 42. When the motor 31 stops rotating, the worm 32 and the primary gear 41 complete self-locking, and the lock bar 61 moves against the compression force of the torsional spring 63, thereby effectively avoiding the risk of abnormal unlocking caused by knocking and vibration. In addition, the feedback module 8 is also included, the driven gear 43 is provided with a magnet 82, and the magnet 82 transmits signals to the Hall sensor 81 arranged in the housing 1 through displacement, and then feeds back the locking and unlocking information to the central control system. The above process ensures the reliability and safety of the lock in normal working state through precise transmission design. It should be noted that the existing central control system is arranged in the electronic lock, for example, a control board 9 is used for control, and the central control system of the electronic lock is prior art, which will not be described here.

[0036] In combination Figures 1 to 3 As shown, the door state sensing module 7 includes a sensing element arranged on the lock catch and a sensing module arranged in the housing and matched with the sensing element. Specifically, the door state sensing module 7 includes an IC tag 71 attached to the lock catch 2 and a card swiping plate 72 arranged inside the lock. The door signal sensing function is realized through the cooperation of the two. Specifically, the lock catch 2 is installed on the cabinet door panel, when the user opens the door, the lock catch 2 moves away with the door panel, and the card swiping plate 72 judges that the door is opened when the IC tag 71 moves away. The IC tag 71 can use high-frequency radio frequency identification technology, and the card swiping plate 72 can be built-in radio frequency reading module, which judges the state of the door by detecting the existence or nonexistence of the IC tag 71. This design effectively avoids the problem that the traditional magnet 82 or mechanical structure is easy to be cheated when sensing the door signal, and significantly improves the safety of the lock. For example, in actual application, if someone tries to fake the door closing information, since the IC tag 71 has uniqueness and cannot be replaced by ordinary magnet 82, the card swiping plate 72 can accurately judge the true state of the door, thereby eliminating the possibility of cheating. It should be noted that the door state sensing module is not limited to using IC tags, but can also be cards, IC chips, or ID chips, etc.

[0037] The emergency unlocking device includes two mechanical emergency unlocking modes, i.e., an emergency pull rod 51 and an emergency wrench 53, which are suitable for different installation environment requirements. Specifically,

[0038] In combination Figure 6 As shown in the figure, when the electric control unlocking of the lock fails, the unlocking operation can be completed by pulling the emergency pull rod 51. When the emergency pull rod 51 is pulled, the driving block 62 and the lock bar 61 are moved to complete the unlocking by overcoming the torsional force of the torsional spring 63. When the emergency pull rod 51 is used to unlock, the gear set 4 does not rotate, so it cannot provide a lock state signal switching. When the emergency pull rod 51 is released, the driving block 62 and the lock bar 61 are automatically reset to restore the locking state under the action of the torsional force of the torsional spring 63 and the elastic force of the return spring 52. The emergency pull rod 51 will not follow the movement when the electric control unlocking and the emergency wrench 53 unlocking are used. This design realizes reliable emergency unlocking function through simple mechanical structure, while ensuring the stability of the lock in a non-emergency state. For example, in some emergency situations, the user can directly pull the emergency pull rod 51 to complete the unlocking operation without the help of any tool, greatly improving the convenience of use.

[0039] In combination Figures 7 to 8As shown, for the implementation mode of the emergency wrench 53 unlocking, when the electrically controlled unlocking of the lock fails, the unlocking operation can also be completed through the emergency wrench 53. The primary gear 41 is connected in the housing 1 through the gear spring 44, and the primary gear 41 is adapted to move in the housing 1 to be coupled to or decoupled from the motor drive module 3; when the primary gear 41 presses down the gear spring 44, the primary gear 41 is decoupled from the worm 32 to achieve decoupling from the motor drive module 3, and when the pressing force on the primary gear 41 is released, the gear spring 44 drives the primary gear 41 to reset to couple the primary gear 41 with the worm 32. Here, the rotating shaft of the torsion spring gear 42 is provided with a structure matched with the emergency wrench 53, for example, a tooth groove structure can be used to realize the cooperation of the emergency wrench 53 and the torsion spring gear 42. The housing 1 is provided with a first opening 11 corresponding to the rotating shaft of the primary gear 41 and a second opening 12 adapted to the rotating shaft of the torsion spring gear 42. When the emergency wrench 53 is used to unlock, the lever can be used to press down the primary gear 41 to complete the decoupling between the gear set 4 and the worm 32. Then the emergency wrench 53 is inserted into the torsion spring gear 42 and rotated to complete the unlocking operation. When the emergency wrench 53 is used to unlock, the gear set 4 will rotate synchronously, and the lock state signal can be fed back. The emergency unlocking wrench does not have an automatic reset function, and both unlocking and locking need to be realized by rotating the wrench. The primary gear 41 cooperates with the gear spring 44, and the gear spring 44 pushes the primary gear 41 to ensure that the primary gear 41 is reliably engaged with the worm 32 on the motor 31 when it is not pressed down. The above design provides another convenient emergency unlocking mode through reasonable mechanical structure design, which is suitable for different installation environments. For example, in some space-limited environments, the user can quickly complete the unlocking operation through the emergency wrench 53, and the synchronous rotation of the gear set 4 can realize real-time feedback of the lock state information to the central control system, so that the management personnel can master the use of the lock.

[0040] In actual application scenarios, the electronic lock of the present embodiment can be widely used in intelligent storage cabinets, file cabinets and other places requiring high security and convenience. For example, in an intelligent storage cabinet, a user sends an unlocking instruction to the central control system through a mobile phone APP, and the central control system controls the motor 31 to start after receiving the instruction, and drives the gear set 4 to complete the unlocking operation. At the same time, the card swiping plate 72 detects the state of the IC tag 71 in real time and feeds back the door signal information to the central control system to ensure the security of the storage cabinet. If power failure or other failures cause the electrically controlled unlocking to fail, the user can quickly complete the unlocking operation through the emergency pull rod 51 or the emergency wrench 53 to ensure the timely taking out of the items.

[0041] Through the embodiment scheme, the lock uses the emergency wrench 53 tool to complete emergency unlocking, has simple structure, low cost and good convenience; meanwhile, the transmission design of the lock avoids the risk of knocking unlocking, and provides two kinds of emergency unlocking mechanisms which can be suitable for different installation environments; further, the door state sensing uses the IC tag 71 to identify, which can effectively improve the safety of the lock.

[0042] It should be understood that the above is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above examples, and any technical solution belonging to the idea of the present application belongs to the protection scope of the present application.

[0043] The above introduction of the drawings used in the embodiment only shows some embodiments of the present application, and should not be considered as the limitation of the scope, and for ordinary skilled in the art, other related drawings can be obtained without creative labor.

Claims

1. An emergency unlocking electronic lock, comprising a housing, a motor drive module, a gear transmission module, an emergency unlocking device and a locking module arranged in the housing; the motor drive module is used for receiving an unlocking signal of a central control system and completing an unlocking action through a motor driving gear set; characterized in that, The gear transmission module comprises a primary gear and a torsion spring gear; the primary gear is connected to the motor driving module, and the torsion spring gear is connected to the locking module through a torsion spring; the primary gear is adapted to drive the torsion spring gear to drive the locking module to realize locking or unlocking under the driving of the motor driving module; the emergency unlocking device comprises an emergency wrench which is adapted to be inserted into the shell from outside the shell to drive the torsion spring gear to rotate.

2. The emergency override electronic lock of claim 1, wherein, The emergency wrench is adapted to be connected to the torsion spring gear to drive the torsion spring gear to rotate from outside the shell.

3. The emergency override electronic lock of claim 2, wherein, The primary gear is connected to the shell through a gear spring, and the primary gear is adapted to be coupled to or decoupled from the motor driving module in the shell; when the primary gear is decoupled from the motor driving module, the torsion spring gear is driven to rotate by the emergency wrench.

4. The emergency override electronic lock of claim 3, wherein, A first opening corresponding to the rotation shaft of the primary gear is arranged on the shell to facilitate the compression of the gear spring by the primary gear, thereby driving the primary gear to be decoupled from the motor driving module; a second opening for the insertion of the emergency wrench is also arranged on the shell.

5. The emergency override electronic lock of claim 1, wherein, A driven gear is arranged between the primary gear and the torsion spring gear; a feedback module is connected to the driven gear to detect the on-off state of the electronic lock.

6. The emergency override electronic lock of claim 5, wherein, The feedback module comprises a magnet arranged on the driven gear and a Hall sensor arranged in the shell; the driven gear is adapted to drive the magnet to move when the primary gear rotates, and the position of the magnet is sensed by the Hall sensor to feedback the on-off state of the electronic lock.

7. The emergency lock release electronic lock of claim 1, wherein, The locking module comprises a driving block and a lock bar connected to the driving block; one end of the torsion spring is connected to the driving block.

8. The emergency override electronic lock of claim 7, wherein, The emergency unlocking device further comprises an emergency pull rod connected to the driving block, and one end of the emergency pull rod extends out of the shell; the driving block is driven to move by pulling the emergency pull rod from outside the shell, thereby driving the lock bar to unlock; a return spring is arranged on the emergency pull rod to facilitate the return of the emergency pull rod.

9. The emergency lock-openable electronic lock according to claim 1, wherein A door state sensing module is further included, which comprises a sensing element arranged on the lock catch and a sensing module arranged in the shell and matched with the sensing element.

10. The emergency lock-openable electronic lock according to claim 1, wherein In the locked state, the primary gear is coupled to the motor driving module and is in a self-locking state, and a pre-tightening force exists between the torsion spring and the locking module.

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