Intelligent control mechanism of the lock tongue

Abstract

This invention discloses an intelligent control mechanism for the lock tongue of a lock body. The main lock tongue, auxiliary lock tongue, sensing tongue, and mechanical unlocking device are respectively equipped with position sensors for the main lock tongue, auxiliary lock tongue, sensing tongue, and mechanical unlocking device. The main lock tongue position sensor, auxiliary lock tongue position sensor, sensing tongue position sensor, key unlocking sensor, and alarm device, all fixedly installed inside the lock body shell, can sense when they reach designated positions and transmit the sensing signals to the control circuit board. The control circuit board controls the motor's start / stop, direction, and alarm device's activation / deactivation by determining the lock body's unlocked state, open / closed state, door's open / closed state, and key unlocking state. This invention can monitor the real-time status of the lock body and door, achieving intelligent control of the lock tongue and ensuring the safety of the user's personal property.

Description

Technical Field

[0001] This invention relates to a combination lock, and more particularly to an intelligent control mechanism for the lock tongue of the lock body. Background Technology

[0002] Currently, smart door locks have become the mainstream of entry door locks and are loved by many users. However, the unlocking and locking of current smart door locks rely entirely on program code control. Once the program malfunctions, it will lead to locking failure or unlocking failure. Furthermore, if the lock bolt malfunctions during the locking process, existing smart door locks will not be able to detect it, resulting in locking failure, which may cause losses to the user's personal property. In addition, users cannot obtain real-time information on the door lock status, whether the lock is open or closed, or the door's status. Summary of the Invention

[0003] To overcome the above-mentioned defects, the present invention provides an intelligent control mechanism for the lock tongue of the lock body. This intelligent control mechanism facilitates the monitoring of the real-time status of the lock body and the door, ensuring the safety of the user's personal property.

[0004] The technical solution adopted by this invention to solve its technical problem is: an intelligent control mechanism for the lock tongue of a lock body, including a lock shell, a main lock tongue, a secondary lock tongue, a sensor tongue, a mechanical unlocking device, a secondary lock tongue locking device, a motor, and a control circuit board. The main lock tongue, secondary lock tongue, and sensor tongue can reciprocate linearly by extending or retracting from the surface of the lock shell. The main lock tongue and secondary lock tongue extending from the surface of the lock shell can lock the lock body. The sensor tongue can elastically retract to avoid obstruction when the door is closed. The secondary lock tongue locking device prevents the secondary lock tongue from elastically sliding into the lock shell when locked, and allows the secondary lock tongue to elastically slide into the lock tongue when unlocked. The motor and the mechanical unlocking device can both drive the main lock tongue to extend and retract through the main lock tongue transmission mechanism. The motor and the mechanical unlocking device can also drive the secondary lock tongue locking device through the secondary lock tongue transmission mechanism to block and disengage the secondary lock tongue. The main lock tongue, secondary lock tongue, and sensor tongue are respectively fixedly installed inside the lock shell. The device includes a main bolt position sensor, a secondary bolt position sensor, a sensing bolt position sensor, a key unlocking sensor, and an alarm device. The main bolt is equipped with a main bolt position sensor, the secondary bolt with a secondary bolt position sensor, the sensing bolt with a sensing bolt position sensor, and the mechanical unlocking device with a mechanical unlocking device position sensor. These sensors can sense when the main bolt, secondary bolt, sensing bolt, and key unlocking sensor reach their respective positions and transmit the signals to a control circuit board. The control circuit board then determines whether the lock is in an unlocked state, an open state, the door's open / closed state, and the key unlocking state based on these signals. The control circuit board also controls the motor's start / stop, direction, and the alarm device's activation / deactivation.

[0005] As a further improvement of the present invention, both the secondary latch position sensor and the primary latch position sensor are optocouplers. The secondary latch position sensor and the primary latch position sensor can receive the optical signal emitted by the optocoupler sensor facing them and convert it into a corresponding electrical signal. The secondary latch position sensor and the primary latch position sensor are electrically connected to the control circuit board for communication.

[0006] As a further improvement of the present invention, the secondary latch fixing plate and the sensing latch rod are provided inside the lock housing, which can slide linearly a set distance. The secondary latch and the sensing latch are respectively installed on the secondary latch fixing plate and the sensing latch rod. The lock housing is also provided with a secondary latch elastic element and a sensing latch elastic element. The secondary latch elastic element and the sensing latch elastic element provide elastic holding force for the secondary latch fixing plate and the sensing latch rod to slide in the direction of sliding outward of the lock housing. The secondary latch position sensing plate and the sensing latch position sensing plate are distributed and fixedly installed on the side wall of the secondary latch fixing plate and the sensing latch rod, and the secondary latch position sensing plate and the sensing latch position sensing plate can be directly opposite the secondary latch position sensor and the sensing latch position sensor as the secondary latch fixing plate and the sensing latch rod slide.

[0007] As a further improvement of the present invention, the main bolt position sensor and the key unlocking sensor are both Hall sensors, and the main bolt position sensing plate and the mechanical unlocking device position sensing plate are both strong magnets. The strong magnets can activate the Hall sensors that enter their magnetic fields, and the Hall sensors are electrically connected and communicate with the control circuit board.

[0008] As a further improvement of the present invention, the lock housing is provided with a top and bottom rod that is synchronously linked with the main bolt. The main bolt position sensing plate is fixedly installed on the top and bottom rod. The mechanical unlocking device includes a lock cylinder wheel and a transmission baffle. The lock cylinder wheel is provided with a lock cylinder for key unlocking. The outer circumference of the lock cylinder wheel is provided with an eccentric actuating protrusion. The actuating protrusion can actuate the main bolt transmission mechanism and the auxiliary bolt transmission mechanism to move synchronously to unlock, and drive the transmission baffle to move synchronously. The mechanical unlocking device position sensing plate is fixedly installed on the transmission baffle. The main bolt position sensing plate and the mechanical unlocking device position sensing plate can enter the sensing range of the main bolt position sensor and the key unlocking sensor respectively as the top and bottom rods and the transmission baffle move.

[0009] As a further improvement of the present invention, two main bolt position sensors are provided at intervals along the movement direction of the top and bottom rods inside the lock housing. The main bolt position sensing plate on the top and bottom rods senses one main bolt position sensor directly when the main bolt is in the unlocked state and the locked state, respectively.

[0010] As a further improvement of the present invention, the power output shaft of the motor transmits power to the main lock tongue transmission mechanism and the auxiliary lock tongue transmission mechanism through a clutch. The lock housing is also hinged with a lever. One end of the lever rotates around the hinge axis to engage the clutch with the main lock tongue transmission mechanism and the auxiliary lock tongue transmission mechanism. When the transmission baffle moves synchronously with the lock head dial, it can move the other end of the lever to rotate around the hinge axis.

[0011] As a further improvement of the present invention, the lock housing is further provided with a clutch reset elastic element, which provides an elastic holding force to at least one of the transmission baffle, the actuating lever and the clutch to maintain the engagement of the actuating clutch with the main lock tongue transmission mechanism and the auxiliary lock tongue transmission mechanism.

[0012] As a further improvement of the present invention, a sensor mounting plate is fixedly installed on the inner wall of the lock body shell, the secondary bolt position sensor and the primary bolt position sensor are fixedly installed on one side wall of the sensor mounting plate, and the main bolt position sensor and the key unlocking sensor are fixedly installed on the other side wall of the sensor mounting plate.

[0013] As a further improvement of the present invention, a lock body control APP is also provided. The lock body control APP communicates with the control circuit board via a wireless network. The lock body control APP can display the lock body status, the lock body open status, the door open / closed status, and the key unlocking status. The lock body control APP can also send unlocking signals and alarm cancellation signals to the control circuit board.

[0014] The beneficial effects of this invention are as follows: This invention uses a main latch position sensor, a secondary latch position sensor, a sensing tongue position sensor, and a key unlocking sensor fixedly installed inside the lock housing to sense the position of the main latch position sensor, the secondary latch position sensor, the sensing tongue position sensor, and the mechanical unlocking device position sensor on the mechanical unlocking device. This facilitates the control system on the control circuit board to obtain information such as whether the lock body is unlocked or locked, whether the lock is open, the instantaneous opening and closing status of the door, and the status of mechanical unlocking using the key. This facilitates accurate control of the motor by the control system on the control circuit board, preventing mis-locking due to command errors during the smart lock control process, and preventing situations where the lock is not locked in time. This improves the security of smart locks. Furthermore, by setting up an alarm device, it prevents unauthorized mechanical unlocking after the user loses their key. This invention also allows real-time monitoring of the smart lock's status via a mobile app, allowing users to check the status of their home lock while working or traveling, preventing unauthorized opening of the smart lock and subsequent loss of items. This invention significantly improves the security of smart locks. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of the present invention;

[0017] Figure 3 This is a front view of the sensor mounting plate of the present invention;

[0018] Figure 4This is a right view of the sensor mounting plate of the present invention;

[0019] Figure 5 This is a rear view of the sensor mounting plate of the present invention. Detailed Implementation

[0020] Example: A lock body's intelligent control mechanism for the bolt includes a lock shell 1, a main bolt 2, a secondary bolt 3, a sensor bolt 4, a mechanical unlocking device, a secondary bolt locking device 5, a motor 6, and a control circuit board 7. The main bolt 2, secondary bolt 3, and sensor bolt 4 can reciprocate linearly by extending or retracting from the surface of the lock shell 1. The main bolt 2 and secondary bolt 3 extending from the surface of the lock shell 1 lock the lock body. The sensor bolt 4 can elastically retract to avoid obstruction when the door is closed. The secondary bolt locking device 5 prevents the secondary bolt 3 from elastically sliding into the lock shell 1 when locked, and allows the secondary bolt 3 to elastically slide into the bolt when unlocked. The motor 6 and the mechanical unlocking device can both drive the main bolt 2 to extend and retract via the main bolt 2 transmission mechanism. The motor 6 and the mechanical unlocking device can also drive the secondary bolt locking device 5 via the secondary bolt 3 transmission mechanism to block and disengage the secondary bolt 3. A main bolt position sensor 8 and a secondary bolt position sensor 9 are fixedly installed inside the lock shell 1. The system includes a bolt position sensor 9, a sensing bolt position sensor 10, a key unlocking sensor 11, and an alarm device. A main bolt position sensor 12 is installed on the main bolt 2, a secondary bolt position sensor 13 is installed on the secondary bolt 3, a sensing bolt position sensor 14 is installed on the sensing bolt 4, and a mechanical unlocking device position sensor 15 is installed on the mechanical unlocking device. The main bolt position sensor 8, secondary bolt position sensor 9, sensing bolt position sensor 10, and key unlocking sensor 11 can respectively sense the main bolt position sensor 12, secondary bolt position sensor 13, sensing bolt position sensor 14, and mechanical unlocking device position sensor 15 when they reach designated positions, and transmit the sensing signals to the control circuit board 7. The control circuit board 7 determines whether the lock body is in an unlocked state, whether the lock body is in an open state, the door's open / closed state, and the key unlocking state based on the aforementioned sensing signals. The control circuit board 7 controls the motor 6 to start / stop, rotate, and control the alarm device to start / stop.

[0021] When the smart lock recognizes the correct password, the control circuit board 7 controls the motor 6 to start. The motor 6 drives the main bolt 2 to retract through the main bolt 2 transmission mechanism. At the same time, it drives the secondary bolt locking device 5 to move and disengage from the secondary bolt 3 through the secondary bolt 3 transmission mechanism. At this time, the main bolt position sensor 8 senses the position information of the main bolt position sensing piece 12. The control circuit board 7 obtains a signal that the lock body has entered the unlocking state through the sensing information. The control circuit board 7 can also control the generator to play the lock body unlocking information. At this time, turning the door handle can retract the secondary bolt 3 to open the door. At the same time as the secondary bolt 3 retracts, the secondary bolt position sensor 9 senses the secondary bolt position sensing piece 13 and transmits the sensing information to the control system of the control circuit board 7. The control system determines that the user is in the open state based on the secondary bolt 3 retraction information. The control system stops the motor 6 to maintain the unlocking action. When the secondary bolt 3 is open, the user pushes the door to open it and enter the house. When the door is closed again, the sensing bolt position sensor... When the latch plate 14 is sensed by the latch position sensor 10, the control system outputs a generator 6 rotation signal to lock the main latch 2. The control system senses the position information of the main latch position sensor plate 12 being in the locked state through the main latch position sensor 8, and the control system determines that the lock body is in the locked state. At this time, the motor 6 remains in a stopped state. When someone uses a key to mechanically open the door, the key unlocking sensor 11 senses that the mechanical unlocking device position sensor plate 15 has entered the unlocking position. Then, the control system controls the alarm device to start the alarm to prevent others from using a found key or a master key to mechanically unlock the door and enter the house. If the user is unable to unlock the door electrically due to a malfunction of the electric unlocking device or other reasons, and uses a key to mechanically open the door, the alarm will sound and can be deactivated by entering a password. The above-mentioned intelligent latch control mechanism realizes the real-time active acquisition of various status information of the smart lock, ensuring the safety of the smart lock and preventing misunderstandings or failure to lock in time.

[0022] Both the secondary latch position sensor 9 and the primary latch position sensor 10 are optocoupler sensors. The secondary latch position sensing element 13 and the primary latch position sensing element 14 can receive the optical signals emitted by the optocoupler sensors facing them and convert them into corresponding electrical signals. The secondary latch position sensing element 13 and the primary latch position sensing element 14 are electrically connected to the control circuit board 7 for communication. In addition to using optocoupler sensors and sensing elements for receiving and converting optical signals and transmitting information, other sensing devices, such as proximity switches, can also be used. This is an equivalent replacement structure that is easily conceived by those skilled in the art based on this patent.

[0023] The lock housing 1 is equipped with a secondary latch fixing plate 16 and a sensor latch rod 17 that can slide linearly a set distance. The secondary latch 3 and the sensor latch 4 are respectively installed on the secondary latch fixing plate 16 and the sensor latch rod 17. The lock housing 1 is also equipped with a secondary latch elastic element and a sensor latch elastic element 18. The secondary latch elastic element and the sensor latch elastic element 18 provide elastic holding force for the secondary latch fixing plate 16 and the sensor latch rod 17 to slide in the direction of sliding outward of the lock housing 1. The secondary latch position sensing plate 13 and the sensor latch position sensing plate 14 are distributed and fixedly installed on the side wall of the secondary latch fixing plate 16 and the sensor latch rod 17, and the secondary latch position sensing plate 13 and the sensor latch position sensing plate 14 can slide with the secondary latch fixing plate 16 and the sensor latch rod 17 and be directly opposite the secondary latch position sensor 9 and the sensor latch position sensor 10. The secondary latch position sensor 13 and the sensor tongue position sensor 14 are respectively mounted on the secondary latch fixing plate 16 and the sensor tongue pull rod 17, which facilitates the installation of the secondary latch position sensor 13 and the sensor tongue position sensor 14, and also facilitates the installation of the secondary latch position sensor 9 and the sensor tongue position sensor 10. The two can avoid other mechanisms in the lock body to prevent signal errors.

[0024] Both the main bolt position sensor 8 and the key unlocking sensor 11 are Hall sensors. Both the main bolt position sensing plate 12 and the mechanical unlocking device position sensing plate 15 are strong magnets. The strong magnets can activate the Hall sensors that enter their magnetic fields. The Hall sensors are electrically connected and communicate with the control circuit board 7.

[0025] The lock housing 1 is equipped with a top and bottom rod 19 that is synchronously linked with the main bolt 2. The main bolt position sensing plate 12 is fixedly installed on the top and bottom rod 19. The mechanical unlocking device includes a lock head dial 20 and a transmission baffle 21. The lock head dial 20 is equipped with a lock cylinder for key unlocking. The outer circumference of the lock head dial 20 is provided with an eccentric actuating protrusion. The actuating protrusion can actuate the transmission mechanism of the main bolt 2 and the transmission mechanism of the auxiliary bolt 3 to move synchronously to unlock, and drive the transmission baffle 21 to move synchronously. The mechanical unlocking device position sensing plate 15 is fixedly installed on the transmission baffle 21. The main bolt position sensing plate 12 and the mechanical unlocking device position sensing plate 15 can enter the sensing range of the main bolt position sensor 8 and the key unlocking sensor 11 respectively as the top and bottom rod 19 and the transmission baffle 21 move. Since the top and bottom rods 19 are linked with the main bolt 2, the movement position of the main bolt position sensor 12 on the top and bottom rods 19 is the same as the movement position of the main bolt 2. Since the lock head dial 20 will move the transmission baffle 21 when the key is unlocked, the movement position of the mechanical unlocking device position sensor 15 on the transmission baffle 21 is the same as the rotation position of the lock cylinder when the key is unlocked.

[0026] Two main bolt position sensors 8 are spaced apart inside the lock housing 1 along the movement direction of the top and bottom bolts 19. The main bolt position sensing plate 12 on the top and bottom bolts 19 senses one of the main bolt position sensors 8 when the main bolt 2 is in the unlocked or locked state. With two main bolt position sensors 8 spaced apart along the movement direction of the top and bottom bolts 19, when the upper main bolt position sensor 8 senses the main bolt position sensing plate 12, the control system knows the lock is unlocked; when the lower main bolt position sensor 8 senses the main bolt position sensing plate 12, the control system knows the lock is locked.

[0027] The power output shaft of the motor 6 transmits power to the main latch 2 transmission mechanism and the auxiliary latch 3 transmission mechanism via a clutch 22. A lever 23 is also hinged inside the lock housing 1. One end of the lever 23 rotates around the hinge axis, engaging or disengaging the clutch 22 from the main latch 2 and auxiliary latch 3 transmission mechanisms. When the transmission baffle 21 moves synchronously with the lock head dial 20, it can rotate the other end of the lever 23 around the hinge axis. When unlocking with a key, the clutch 22 separates the motor 6 from the main latch 2 and auxiliary latch 3 transmission mechanisms, ensuring smooth mechanical unlocking.

[0028] The lock housing 1 is also equipped with a clutch reset elastic element 24. The clutch reset elastic element 24 provides an elastic holding force to at least one of the transmission baffle 21, the actuating lever 23, and the clutch 22 to maintain the engagement of the actuating clutch 22 with the main lock tongue 2 transmission mechanism and the auxiliary lock tongue 3 transmission mechanism. By using the clutch reset elastic element 24, it can be ensured that after unlocking, the clutch 22 automatically connects the motor 6 with the main lock tongue 2 transmission mechanism and the auxiliary lock tongue 3 transmission mechanism, entering the electric unlocking state.

[0029] A sensor mounting plate 25 is fixedly installed on the inner wall of the lock body shell. The secondary bolt position sensor 9 and the primary bolt position sensor 10 are fixedly installed on one side wall of the sensor mounting plate 25, and the primary bolt position sensor 8 and the key unlocking sensor 11 are fixedly installed on the other side wall of the sensor mounting plate 25. By setting the sensor mounting plate 25 inside the lock shell 1, the various sensors are distributed on both sides, saving space and facilitating the installation and distribution of the sensors.

[0030] The system also includes a lock control app, which communicates wirelessly with the control circuit board 7. The app displays the lock's status, including its open / closed position, the door's open / closed position, and the key's unlocking status. It can also send unlocking and alarm deactivation signals to the control circuit board 7. By connecting the control circuit board 7 wirelessly to the lock control app on the user's phone, users can remotely monitor and control the lock and door status in real time. Remote locking and unlocking are also possible, enhancing both convenience and security.

Claims

1. A lock body's intelligent control mechanism for the bolt, comprising a lock shell (1), a main bolt (2), a secondary bolt (3), a sensor bolt (4), a mechanical unlocking device, a secondary bolt locking device (5), a motor (6), and a control circuit board (7), wherein the main bolt, secondary bolt, and sensor bolt are respectively capable of reciprocating linear sliding to extend or retract from the surface of the lock shell; the main bolt and secondary bolt extending from the surface of the lock shell enable the lock body to be locked; the sensor bolt can elastically retract to avoid obstruction when the door is closed; the secondary bolt locking device prevents the secondary bolt from elastically sliding into the lock shell when the lock is closed, and allows the secondary bolt to elastically slide into the bolt when the lock is unlocked; the motor and the mechanical unlocking device can both drive the main bolt to extend and retract through the main bolt transmission mechanism; the motor and the mechanical unlocking device can also drive the secondary bolt locking device to move through the secondary bolt transmission mechanism to block and disengage the secondary bolt; characterized in that: The lock housing is equipped with a main bolt position sensor (8), a secondary bolt position sensor (9), a sensing bolt position sensor (10), a key unlocking sensor (11), and an alarm device. A main bolt position sensor (12) is mounted on the main bolt, a secondary bolt position sensor (13) on the secondary bolt, a sensing bolt position sensor (14) on the sensing bolt, and a mechanical unlocking device position sensor (15) on the mechanical unlocking device. The main bolt position sensor, secondary bolt position sensor, sensing bolt position sensor, and key unlocking sensor can respectively sense the main bolt position sensor, secondary bolt position sensor, sensing bolt position sensor, and mechanical unlocking device position sensor when they reach designated positions and transmit the sensing signals to the control circuit board. Based on the aforementioned sensing signals, the system determines whether the lock body is in the unlocked state, whether the lock body is in the open state, the door's open / closed state, and the key unlocking state. The control circuit board controls the motor's start / stop, direction, and alarm device's start / stop. The motor's power output shaft transmits power to the main and auxiliary bolt transmission mechanisms via a clutch (22). The lock housing is also hinged with a lever (23). One end of the lever rotates around the hinge axis, which can engage / disengage the clutch with the main and auxiliary bolt transmission mechanisms. When the transmission baffle moves synchronously with the lock head dial, it can engage / disengage the other end of the lever around the hinge axis. When the key is used for unlocking, the clutch (22) separates the motor (6) from the main and auxiliary bolt transmission mechanisms, ensuring smooth mechanical unlocking. The lock housing is also provided with a clutch reset elastic element (24). The clutch reset elastic element provides an elastic holding force to at least one of the transmission baffle, the actuating lever and the clutch to keep the actuating clutch engaged with the main lock tongue transmission mechanism and the auxiliary lock tongue transmission mechanism. The clutch reset elastic element (24) ensures that after the unlocking is completed, the clutch (22) automatically connects the motor (6) with the main lock tongue transmission mechanism and the auxiliary lock tongue transmission mechanism, and enters the electric unlocking state.

2. The intelligent control mechanism for the lock tongue of the lock body according to claim 1, characterized in that: Both the secondary latch position sensor and the primary latch position sensor are optocoupler sensors. The secondary latch position sensor and the primary latch position sensor can receive the optical signal emitted by the optocoupler sensor opposite them and convert it into a corresponding electrical signal. The secondary latch position sensor and the primary latch position sensor are electrically connected to the control circuit board for communication.

3. The intelligent control mechanism for the lock tongue of the lock body according to claim 1 or 2, characterized in that: The lock housing contains a secondary latch fixing plate (16) and a sensor latch rod (17) that can slide linearly a set distance. The secondary latch and the sensor latch are respectively installed on the secondary latch fixing plate and the sensor latch rod. The lock housing also contains a secondary latch elastic element and a sensor latch elastic element (18). The secondary latch elastic element and the sensor latch elastic element provide elastic holding force for the secondary latch fixing plate and the sensor latch rod to slide towards the outside of the lock housing. The secondary latch position sensing plate and the sensor latch position sensing plate are distributed and fixedly installed on the side walls of the secondary latch fixing plate and the sensor latch rod. The secondary latch position sensing plate and the sensor latch position sensing plate can be directly opposite the secondary latch position sensor and the sensor latch position sensor as the secondary latch fixing plate and the sensor latch rod slide.

4. The intelligent control mechanism for the lock tongue of the lock body according to claim 1, characterized in that: Both the main bolt position sensor and the key unlocking sensor are Hall sensors. Both the main bolt position sensing plate and the mechanical unlocking device position sensing plate are strong magnets. The strong magnets can activate the Hall sensors that enter their magnetic fields. The Hall sensors are electrically connected and communicate with the control circuit board.

5. The intelligent control mechanism for the lock tongue of the lock body according to claim 1 or 4, characterized in that: The lock housing is provided with a top and bottom rod (19) that is synchronously linked with the main bolt. The main bolt position sensing plate is fixedly installed on the top and bottom rod. The mechanical unlocking device includes a lock head dial (20) and a transmission baffle (21). The lock head dial is provided with a lock cylinder for key unlocking. The outer circumference of the lock head dial is provided with an eccentric actuating protrusion. The actuating protrusion can actuate the main bolt transmission mechanism and the auxiliary bolt transmission mechanism to move synchronously to unlock, and drive the transmission baffle to move synchronously. The mechanical unlocking device position sensing plate is fixedly installed on the transmission baffle. The main bolt position sensing plate and the mechanical unlocking device position sensing plate can enter the sensing range of the main bolt position sensor and the key unlocking sensor respectively as the top and bottom rod and the transmission baffle move.

6. The intelligent control mechanism for the lock tongue of the lock body according to claim 5, characterized in that: The lock housing is equipped with two main bolt position sensors spaced apart along the direction of movement of the top and bottom rods. The main bolt position sensor on the top and bottom rods is in contact with one of the main bolt position sensors when the main bolt is in the unlocked or locked state.

7. The intelligent control mechanism for the lock tongue of the lock body according to claim 1, characterized in that: A sensor mounting plate (25) is fixedly installed on the inner wall of the lock body shell. The secondary lock tongue position sensor and the primary lock tongue position sensor are fixedly installed on one side wall of the sensor mounting plate, and the main lock tongue position sensor and the key unlocking sensor are fixedly installed on the other side wall of the sensor mounting plate.

8. The intelligent control mechanism for the lock tongue of the lock body according to claim 1, characterized in that: It also includes a lock body control APP, which communicates with the control circuit board via a wireless network. The lock body control APP can display the lock body status, the lock body open status, the door open / closed status, and the key unlocking status. In addition, the lock body control APP can send unlocking signals and alarm cancellation signals to the control circuit board.

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