Passive smart lock cylinder and smart lock

Abstract

The application provides a passive intelligent lock cylinder and an intelligent lock. The lock cylinder is provided with a lock shell and a lock cylinder, and the lock cylinder is inserted into the lock shell. The lock cylinder is provided with a control circuit board, a motor, a driving block, a driving block reset device, a locking block and a locking bolt. The motor is electrically connected with the control circuit board. The first end of the driving block is installed on the rotating shaft of the motor. The second end of the driving block is connected with the first end of the locking block. The driving block reset device is arranged in cooperation with the driving block. The peripheral wall of the locking block is provided with a locking bolt accommodating hole arranged in correspondence with the locking bolt. The control circuit board is provided with a conductive probe, and a part of the conductive probe extends into the key hole. The lock shell is provided with a locking bolt clamping groove, and the locking bolt clamping groove is arranged in cooperation with the locking bolt. The intelligent lock applies the lock cylinder. The passive intelligent lock cylinder has a simple structure.

Description

Technical Field

[0001] This invention relates to the field of lock technology, and more particularly to a passive intelligent lock cylinder, and also to an intelligent lock that uses the passive intelligent lock cylinder. Background Technology

[0002] Smart locks are currently the fastest-growing type of lock in the industry. Electronic unlocking methods such as fingerprint, card swipe, and password have brought convenience to people and reduced the hassle of using keys.

[0003] Existing smart locks, due to their integrated control circuitry, require a power supply within the lock cylinder to power this circuitry. Since the power supply occupies a significant amount of space, the lock cylinder itself also increases in size. However, in certain applications, such as when the door is thin, a larger lock cylinder cannot be installed. Therefore, it is necessary to consider how to achieve intelligent unlocking and locking without a power supply within the lock cylinder structure. Furthermore, most lock cylinders currently remain mechanical; therefore, when upgrading mechanical lock cylinders to smart locks, it is necessary to consider how to retain the existing structure while implementing intelligent unlocking and locking. Summary of the Invention

[0004] The primary objective of this invention is to provide a simplified passive smart lock cylinder.

[0005] The second objective of this invention is to provide a smart lock with a simplified structure that facilitates intelligent upgrades of mechanical locks.

[0006] To achieve the aforementioned first objective, the passive intelligent lock cylinder provided by the present invention comprises a lock shell and a lock cylinder, with the lock cylinder inserted into the lock shell. The lock cylinder comprises a control circuit board, a motor, a drive block, a drive block reset device, a locking stop bolt, and a locking bolt. The motor is electrically connected to the control circuit board. The first end of the drive block is mounted on the motor's rotating shaft, and the second end of the drive block is connected to the first end of the locking stop bolt. The drive block reset device is configured to cooperate with the drive block. The peripheral wall of the locking stop bolt is provided with a locking bolt receiving hole corresponding to the locking bolt. A conductive probe is provided on the control circuit board, with a portion of the conductive probe extending into the keyhole. The lock shell is provided with a locking bolt slot, which is configured to cooperate with the locking bolt.

[0007] As can be seen from the above scheme, the passive intelligent lock cylinder of the present invention, by setting a conductive probe, can be powered and transmit signals through the inserted key, which can reduce the power supply of the lock cylinder and reduce its size. Furthermore, the lock cylinder is equipped with a control circuit board, a motor, a drive block, a drive block reset device, a locking bolt, and a locking bolt. The control circuit board drives the motor, which in turn drives the locking bolt to rotate via the drive block, allowing the locking bolt receiving hole to accommodate the locking bolt, thus enabling unlocking. The drive block reset device can also drive the drive block, causing the locking bolt to rotate and deviate from its original position, so that the locking bolt receiving hole no longer accommodates the locking bolt when locked. By incorporating the control circuit board, motor, drive block, drive block reset device, locking bolt, and locking bolt all within the lock cylinder, the present invention simplifies the lock cylinder structure and facilitates lock cylinder assembly.

[0008] In a further embodiment, the lock cylinder is provided with a keyhole and a reset mounting cavity, the reset mounting cavity being connected to the keyhole, and the drive block reset device being installed in the reset mounting cavity; the drive block reset device includes a stationary reset plate, a movable reset plate, and a spring component, the stationary reset plate being provided with a first spring hole, the movable reset plate being provided with a second spring hole, the first spring hole and the second spring hole cooperating to form a spring hole for installing the spring component; in the extension and retraction direction of the spring component, the length of the stationary reset plate is greater than the length of the movable reset plate.

[0009] As can be seen, the drive block reset device consists of a static reset plate, a dynamic reset plate, and a spring. The length of the static reset plate is greater than that of the dynamic reset plate. When unlocking, the dynamic reset plate can make room for the drive block to rotate. When locking, the dynamic reset plate is reset to the unlocked position due to the force of the spring, thereby driving the drive block to reset.

[0010] In a further embodiment, the moving reset plate is also provided with a first protrusion and a second protrusion, which are located on opposite sides of the moving reset plate; the first protrusion abuts against the drive block, and a portion of the second protrusion extends into the keyhole.

[0011] As can be seen, the moving reset piece, by setting the first protrusion and the second protrusion, can push the second protrusion through the key's teeth when unlocking, thereby driving the first protrusion and giving the drive block room to rotate. When locking, the key's teeth no longer press the second protrusion, and under the action of the spring, the first protrusion can be reset, thereby driving the lock bolt to reset.

[0012] In a further embodiment, the drive block is provided with a first inclined surface, which abuts against the first protrusion.

[0013] It can be seen that the surface where the drive block abuts against the first protrusion is an inclined surface, which can reduce mechanical jamming and reduce mechanical wear.

[0014] In a further embodiment, the first end of the locking bolt is provided with a slot, and the second end of the drive block engages with the slot.

[0015] It can be seen that by providing a slot at the first end of the locking bolt to engage with the second end of the drive block, assembly and disassembly can be facilitated.

[0016] In a further embodiment, a limiting protrusion is provided on the locking bolt, and the limiting protrusion is located at the second end of the locking bolt, with the second end of the locking bolt being positioned opposite to the first end of the locking bolt.

[0017] Therefore, by setting a limiting protrusion, excessive rotation amplitude can be prevented when the motor rotates, thereby avoiding misalignment between the locking bolt receiving hole and the locking bolt.

[0018] In a further design, the control circuit board is equipped with a detection probe, and the peripheral wall of the lock cylinder is also equipped with a detection opening, with the detection probe and the detection opening working together.

[0019] Therefore, by setting up detection probes, it is possible to detect whether the lock cylinder is in a locked or unlocked state, thereby recording the opening and closing of the lock and further controlling the lock cylinder.

[0020] In a further design, the lock cylinder also includes a toggle drive device, which is connected in conjunction with the lock cylinder.

[0021] Therefore, by setting up a toggle drive device that is connected to the lock cylinder, the lock cylinder can drive the toggle drive device to complete the locking and unlocking operations.

[0022] To achieve the second objective mentioned above, the smart lock provided by the present invention includes a passive smart lock cylinder and an active key, wherein the active key and the passive smart lock cylinder are pluggable; the passive smart lock cylinder uses the aforementioned passive smart lock cylinder.

[0023] Therefore, the passive intelligent lock cylinder of this invention, by incorporating conductive probes, can be powered and transmit signals via the inserted key, reducing the need for a separate power supply and thus minimizing the size of the lock cylinder. Furthermore, the lock cylinder includes a control circuit board, a motor, a drive block, a drive block reset device, a locking stop, and a locking bolt. The control circuit board drives the motor, which in turn drives the locking stop to rotate via the drive block, allowing the locking bolt to be accommodated in the locking bolt receiving hole, thus enabling unlocking. The drive block reset device drives the drive block, which in turn drives the locking stop to rotate, resetting the locking bolt so that the receiving hole no longer accommodates it when locked. This invention, by integrating the control circuit board, motor, drive block, drive block reset device, locking stop, and locking bolt all within the lock cylinder, simplifies the lock cylinder structure and facilitates assembly. Moreover, by placing the power supply within the key, upgrades to mechanical lock cylinders can be achieved simply by replacing the mechanical lock cylinder with a passive intelligent lock cylinder, improving the convenience of upgrading mechanical locks to intelligent systems.

[0024] In a further embodiment, the active key includes a battery, a key control circuit board, and electrical contacts. The battery is electrically connected to the key control circuit board, and the electrical contacts are also electrically connected to the key control circuit board. The electrical contacts are configured in conjunction with conductive probes.

[0025] As can be seen, an active key, by setting up a battery, a key control circuit board, and electrical contacts, allows the battery to form a circuit with the passive smart lock cylinder through the electrical contacts, thereby providing power to the passive smart lock cylinder. At the same time, the key control circuit board can control the circuit of the passive smart lock cylinder to unlock it through the electrical contacts. Attached Figure Description

[0026] Figure 1 This is a structural diagram of an embodiment of the smart lock of the present invention.

[0027] Figure 2 This is an exploded view of the passive smart lock cylinder in an embodiment of the smart lock of the present invention.

[0028] Figure 3 This is a cross-sectional view of the passive smart lock cylinder in an embodiment of the smart lock of the present invention.

[0029] Figure 4 This is an exploded view of the lock cylinder in an embodiment of the smart lock of the present invention.

[0030] Figure 5 This is a structural diagram of the lock cylinder seat in an embodiment of the smart lock of the present invention.

[0031] Figure 6 This is a structural installation diagram of the control circuit board, motor, drive block, drive block reset device, locking bolt, and locking bolt in the embodiment of the smart lock of the present invention.

[0032] Figure 7 This is a circuit diagram of the lock cylinder in an embodiment of the smart lock of the present invention.

[0033] Figure 8 This is an exploded view of the drive block reset device in an embodiment of the smart lock of the present invention.

[0034] Figure 9 This is a cross-sectional view of the drive block reset device in an embodiment of the smart lock of the present invention.

[0035] Figure 10 This is a structural diagram of the drive block in an embodiment of the smart lock of the present invention.

[0036] Figure 11 This is a structural diagram of the locking bolt in an embodiment of the smart lock of the present invention.

[0037] Figure 12 This is a structural diagram of the active key in an embodiment of the smart lock of the present invention.

[0038] Figure 13 This is a cross-sectional view of the active key in an embodiment of the smart lock of the present invention.

[0039] Figure 14 This is an exploded view of the active key structure in an embodiment of the smart lock of the present invention.

[0040] Figure 15 This is a structural diagram of the key body in an embodiment of the smart lock of the present invention.

[0041] Figure 16 This is a circuit block diagram of the active key in an embodiment of the smart lock of the present invention.

[0042] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0043] like Figure 1 As shown, the smart lock of the present invention includes a passive smart lock cylinder 1 and an active key 2. The active key 2 is pluggable to the passive smart lock cylinder 1, and the active key 2 provides power to the circuit module of the passive smart lock cylinder 1.

[0044] See Figure 2 and Figure 3 The passive intelligent lock cylinder 1 includes a lock shell 3, a lock cylinder 4, a toggle drive device 5, and a rear lock cylinder 6. The lock cylinder 4 is inserted into the lock cylinder hole 31 of the lock shell 3. The toggle drive device 5 is connected to the lock cylinder 4. The toggle drive device 5 includes a toggle head or a toggle plate. The connection method between the toggle head or toggle plate and the lock cylinder is a technique known to those skilled in the art and will not be described in detail here. In this embodiment, the toggle drive device 5 is a toggle head, and the toggle drive device 5 is disposed in the toggle drive device slot 32 of the lock shell 3. The rear lock cylinder 6 is inserted into the rear lock cylinder hole 33 of the lock shell 3.

[0045] See Figure 4 The lock cylinder 4 includes a lock cylinder seat 41, a lock cylinder cover 42, a control circuit board 43, a motor 44, a drive block 45, a drive block reset device 46, a locking bolt 47, and a locking bolt 48 (see...). Figure 3 The lock cylinder seat 41 and lock cylinder cover 42 are detachably installed. In this embodiment, the lock cylinder seat 41 and lock cylinder cover 42 are detachably installed by bolts. The lock cylinder rear seat 49 is installed on the lock cylinder seat 41 and is connected to the actuating drive device 5. Figure 3 It is known that the lock housing 3 is also provided with a locking bolt slot 34, which is configured to cooperate with the locking bolt 48. The locking bolt 48 can be inserted into the locking bolt slot 34 when locked.

[0046] See Figure 5 and Figure 6 The lock cylinder seat 41 is provided with a keyhole 411, a circuit board cavity 412, a motor mounting position 413, a reset mounting cavity 414, and a locking bolt groove 415. The circuit board cavity 412, motor mounting position 413, reset mounting cavity 414, and locking bolt groove 415 are arranged sequentially along the direction extending inward from the opening of the keyhole 411. A control circuit board 43 is installed in the circuit board cavity 412, a motor 44 is installed in the motor mounting position 413, and a drive block reset device 46 is installed in the reset mounting cavity 414. The reset mounting cavity 414 communicates with the keyhole 411. A locking bolt 47 is installed in the locking bolt groove 415. The lock cylinder seat 41 also has a locking bolt hole 416, which extends from the bottom of the locking bolt groove 415 towards the outer peripheral wall of the lock cylinder seat 41. A locking bolt 48 is inserted into the locking bolt hole 416. (See also...) Figure 7 The control circuit board 43 is equipped with a conductive probe 431, a detection probe 432, and a lock cylinder control chip 433. Both the conductive probe 431 and the detection probe 432 are electrically connected to the lock cylinder control chip 433. The lock cylinder seat 41 is also equipped with a conductive probe hole 417 and a detection opening 418. The conductive probe hole 417 communicates with the keyhole 411, and the conductive probe 431 is inserted into the conductive probe hole 417, with a portion of the conductive probe 431 extending into the keyhole 411. The detection opening 418 is located on the peripheral wall of the lock cylinder 41 and communicates with the circuit board cavity 412. The detection probe 432 is configured to cooperate with the detection opening 418. The conductive probe 431 is used for electrical contact with the active key 1, and can be used for electrical conduction and communication. The number of conductive probes 431 can be set according to the communication method between the control circuit in the control circuit board 43 and the active key 1. In this embodiment, there are two conductive probes 431. The detection probe 432 is a conductive elastic metal conductor. When the lock cylinder 4 rotates, it is used to contact the lock shell 3, thereby detecting voltage changes and determining the position of the lock cylinder 4.

[0047] The motor 44 is electrically connected to the lock cylinder control chip 433 of the control circuit board 43. The first end of the drive block 45 is mounted on the rotating shaft of the motor 44, and the second end of the drive block 45 is connected to the first end of the locking bolt 47. The drive block reset device 46 is configured to cooperate with the drive block 45. The motor 44 drives the drive block 45 to rotate when unlocking, and the drive block 45 drives the locking bolt 47 to rotate. The drive block reset device 46 pushes the drive block 45 to rotate and reset when locking.

[0048] See 8 and Figure 9 In this embodiment, the drive block reset device 46 includes a stationary reset plate 461, a movable reset plate 462, and a spring member 463. The stationary reset plate 461 is provided with a first spring hole 4611, and the movable reset plate 462 is provided with a second spring hole 4621. The first spring hole 4611 and the second spring hole 4621 cooperate to form the spring hole 463 for mounting the spring member. In the extension and retraction direction of the spring member 463, the length of the stationary reset plate 461 is greater than the length of the movable reset plate 462. The movable reset plate 462 is also provided with a first protrusion 4622 and a second protrusion 4623, which are located on opposite sides of the movable reset plate 462. The first protrusion 4622 abuts against the drive block 45, and a portion of the second protrusion 4623 extends into the keyhole 411.

[0049] See Figure 10 The drive block 45 is provided with a first inclined surface 451, which abuts against the first protrusion 4622. The first end of the drive block 45 is also provided with a mounting hole 452, in which the shaft of the motor 44 is inserted.

[0050] See Figure 11 The locking bolt 47 has a locking bolt receiving hole 471 on its peripheral wall, corresponding to the locking bolt 48. The locking bolt receiving hole 471 can accommodate a portion of the locking bolt 48 when unlocking. A slot 472 is provided at the first end of the locking bolt 47, and the second end of the driving block 45 engages with the slot 472. The locking bolt 47 also has a limiting protrusion 473 located at the second end of the locking bolt 47, which is opposite to the first end of the locking bolt 47. Figure 5 It can be seen that the locking seat 41 is also provided with a limiting groove 419, and the limiting protrusion 473 is configured to cooperate with the limiting groove 419.

[0051] Depend on Figure 6 It is known that the locking bolt 48 includes a spring 481 and a bolt body 482, with the spring 481 fitted onto the bolt body 482. The end of the bolt body 482 facing away from the locking bolt 47 has a hemispherical surface, which reduces mechanical friction during the rotation of the lock cylinder. During unlocking, the bolt body 482 moves in the direction of compressing the spring 481; during locking, the bolt body 482 moves into the locking bolt groove 34 under the elastic force of the spring 481.

[0052] See Figure 12 The active key 2 includes a circuit box 20 and a key body 25, with the key body 25 mounted on the circuit box 20. See also Figure 13 and Figure 14 The circuit box 20 includes an upper cover 21 and a lower cover 22. The upper cover 21 and the lower cover 22 are detachably connected and cooperate to form a circuit cavity 23.

[0053] The circuit box cover 21 has a panel recess 211, a spring-loaded pressing part 212, and an indicator light hole 213, both of which are located within the panel recess 211. A spring-loaded panel 26 is installed within the panel recess 211, pressing down on the spring-loaded pressing part 212 and the indicator light hole 213. The spring-loaded panel 26 also has a light-transmitting part 261, which is positioned opposite to the indicator light hole 213.

[0054] The circuit cavity 23 of the circuit box 20 houses a key control circuit board 24 and a battery 27, which are electrically connected to the key control circuit board 24. In this embodiment, the battery 27 is a rechargeable battery. The key control circuit board 24 includes a switch button 241, an indicator light 242, and a charging communication interface 243. The switch button 241 is positioned opposite to the elastic pressing part 212, and the indicator light 242 is positioned opposite to the indicator light hole 213. The lower cover 22 of the circuit box has an interface hole 221, and the charging communication interface 243 is configured to cooperate with the interface hole 221. The switch button 241 is used to control the activation and deactivation of the active key 2, and the indicator light 242 is used to indicate the power supply status.

[0055] See Figure 15 The key body 25 is provided with a contact circuit board 251, electrical contacts 252, and teeth 253. The contact circuit board 251 is embedded in the key body 25, and the electrical contacts 252 are disposed on the contact circuit board 251. The contact circuit board 251 is electrically connected to the key control circuit board 24. The electrical contacts 252 and teeth 253 are disposed on the same side of the key body 25, and the electrical contacts 252 are electrically connected to the key control circuit board 24. The teeth 253 are configured to cooperate with the second protrusion 4623 of the movable reset piece 462, and the electrical contacts 252 are configured to cooperate with the conductive probes 431. The number of electrical contacts 252 is the same as the number of conductive probes 431. In this embodiment, there are two electrical contacts 252 and two conductive probes 431.

[0056] Depend on Figure 14 and Figure 15It is known that the key control circuit board 24 is also provided with a first fixing hole 244, the key body 25 is also provided with a second fixing hole 254, and the circuit box lower cover 22 is also provided with a fixing post 222, which is inserted into the first fixing hole 244 and the second fixing hole 254.

[0057] In the smart lock of the present invention, the key control circuit board 24 can be configured with circuit modules as needed. In this embodiment, see [reference needed]. Figure 16 The key control circuit board 24 also includes a key control chip 245, a wireless communication module 246, an audible and visual alarm module 247, and a power management module 248. Electrical contacts 252, the wireless communication module 246, and the audible and visual alarm module 247 are all electrically connected to the key control chip 245. The power management module 248 provides power to the key control chip 245, electrical contacts 252, wireless communication module 246, and audible and visual alarm module 247. The key control chip 245 uses a known microcontroller to receive the verification code from the lock cylinder control chip 433, verify the code, and send verification feedback information to the lock cylinder control chip 433. The wireless communication module 246 includes, but is not limited to, a Bluetooth module, an NB-IoT module, a 4G module, a 5G module, or a WiFi module, for communicating with external devices. The audible and visual alarm module 247 uses an audible and visual alarm module known to those skilled in the art for alarm activation. The power management module 248 uses a power management module known to those skilled in the art for power management of the battery 27.

[0058] In addition, the key control circuit board can also be equipped with a fingerprint module, a numeric keypad module, and an OLED display module as needed. The fingerprint module, numeric keypad module, and OLED display module are all electrically connected to the key control chip 245. The fingerprint module, numeric keypad module, and OLED display module all use known circuit modules. The fingerprint module is used for fingerprint verification, the numeric keypad module is used for password input, and the OLED display module is used for display.

[0059] In the locked state, the first protrusion 4622 abuts against the first inclined surface 451, the locking bolt 48 is inserted into the locking bolt slot 34, and the locking bolt receiving hole 471 is offset from the locking bolt hole 416, thereby locking the lock cylinder 4. When unlocking is required, the key body 25 of the active key 2 is inserted into the keyhole 411, so that the electrical contact 252 makes electrical contact with the conductive probe 431. At this time, the battery 27 can provide power to the lock cylinder control chip 433 through the electrical contact 252. After the lock cylinder control chip 433 is activated, it sends a verification code to the key control chip 23. After verifying the verification code, the key control chip 23 sends verification feedback information to the lock cylinder control chip 433. When the verification is successful, the lock cylinder control chip 433 sends an unlocking control signal to the motor 44. After the active key 2 is inserted into the keyhole 411, the teeth 253 exert force on the second protrusion 4623, causing the first protrusion 4622 to move away from the first inclined surface 451 of the drive block 45, giving the drive block 45 room to rotate. At this time, after the lock cylinder control chip 433 sends an unlocking control signal to the motor 44, the motor 44 drives the drive block 45 to move the first inclined surface 451 toward the first protrusion 4622. The locking bolt 47 rotates with the drive block 45, so that the locking bolt receiving hole 471 is aligned with the locking bolt hole 416, thereby allowing the locking bolt 48 to retract into the locking bolt receiving hole 471. At this time, the lock cylinder 4 can be unlocked by rotating the active key 2. When locking is required, the active key 2 is used to turn the lock cylinder 4, so that the locking bolt 48 is inserted into the locking bolt slot 34. After the key is pulled out, the moving reset piece 462 pushes the drive block 45 to rotate under the force of the spring 463, thereby driving the locking bolt 47, so that the locking bolt receiving hole 471 is deviated from the locking bolt hole 416, the locking bolt 48 is locked, and thus the lock cylinder is locked.

[0060] Furthermore, during locking, the rotation position can be detected by the detection probe 432, thereby recording the locking and unlocking process. For example, when it is determined that the lock cylinder 4 has rotated 90 degrees, the key is removed.

[0061] As described above, the passive intelligent lock cylinder of the present invention, by setting a conductive probe, can be powered and transmit signals through the inserted key, reducing the need for a separate power supply and thus reducing the size of the lock cylinder. Furthermore, the lock cylinder includes a control circuit board, a motor, a drive block, a drive block reset device, a locking stop bolt, and a locking bolt. The control circuit board drives the motor, which in turn drives the locking stop bolt through the drive block, allowing the locking bolt to be accommodated in the locking bolt receiving hole, thus enabling unlocking. The drive block reset device drives the drive block, which in turn drives the locking stop bolt, resetting the locking bolt so that the receiving hole no longer accommodates it when locked. By incorporating the control circuit board, motor, drive block, drive block reset device, locking stop bolt, and locking bolt all within the lock cylinder, the present invention simplifies the lock cylinder structure and facilitates assembly. Moreover, by placing the power supply within the key, upgrades to mechanical lock cylinders can be achieved simply by replacing the mechanical lock cylinder with a passive intelligent lock cylinder, improving the convenience of upgrading mechanical locks to intelligent systems.

[0062] It should be noted that the above are only preferred embodiments of the present invention, but the design concept of the invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept also fall within the protection scope of the present invention.

Claims

1. A passive intelligent lock cylinder, comprising a lock shell and a lock cylinder, wherein the lock cylinder is inserted into the lock shell; characterized in that: The lock cylinder is equipped with a control circuit board, a motor, a drive block, a drive block reset device, a locking bolt, and a locking bolt. The motor is electrically connected to the control circuit board. The first end of the drive block is mounted on the motor shaft, and the second end of the drive block is connected to the first end of the locking bolt. The drive block reset device is configured to cooperate with the drive block. The peripheral wall of the locking bolt is provided with a locking bolt receiving hole corresponding to the locking bolt. The control circuit board is equipped with a conductive probe, a portion of which extends into the keyhole. The lock housing is provided with a locking bolt slot, and the locking bolt slot is configured to cooperate with the locking bolt. The lock cylinder is provided with a keyhole and a reset mounting cavity, the reset mounting cavity is connected to the keyhole, and the drive block reset device is installed in the reset mounting cavity; The drive block reset device includes a stationary reset plate, a movable reset plate, and a spring component. The stationary reset plate is provided with a first spring hole, and the movable reset plate is provided with a second spring hole. The first spring hole and the second spring hole cooperate to form a spring hole for installing the spring component. In the extension and retraction direction of the spring member, the length of the stationary reset piece is greater than the length of the dynamic reset piece; The movable reset piece is also provided with a first protrusion and a second protrusion, the first protrusion and the second protrusion being located on opposite sides of the movable reset piece; The first protrusion abuts against the drive block, and a portion of the second protrusion extends into the keyhole. The second protrusion is configured to engage with the teeth of the key. The drive block is provided with a first inclined surface, which abuts against the first protrusion. After the key is inserted into the keyhole, the teeth exert a force on the second protrusion, causing the first protrusion to move away from the first inclined surface of the drive block, so that the drive block has room to rotate; after the key is pulled out, the moving reset plate pushes the drive block to rotate under the action of the spring, thereby driving the locking bolt, causing the locking bolt receiving hole to deviate from the locking bolt hole; The control circuit board is equipped with a detection probe, and the peripheral wall of the lock cylinder is also provided with a detection opening, and the detection probe is configured to cooperate with the detection opening; The detection probe is a conductive elastic metal conductor. When the lock cylinder rotates, it contacts the lock shell to detect voltage changes, determine the position of the lock cylinder rotation, and detect whether the lock cylinder is in a locked or unlocked state, thereby recording the opening and closing of the lock and further controlling the lock cylinder.

2. The passive smart lock cylinder according to claim 1, characterized in that: The first end of the locking bolt is provided with a slot, and the second end of the driving block engages with the slot.

3. The passive smart lock cylinder according to claim 1, characterized in that: The locking bolt is provided with a limiting protrusion, which is located at the second end of the locking bolt. The second end of the locking bolt is disposed opposite to the first end of the locking bolt.

4. The passive smart lock cylinder according to claim 1, characterized in that: The lock cylinder also includes a toggle drive device, which is connected in conjunction with the lock cylinder.

5. A smart lock, characterized in that: It includes a passive smart lock cylinder and an active key, wherein the active key is pluggable to the passive smart lock cylinder; The passive smart lock cylinder uses the passive smart lock cylinder described in any one of claims 1 to 4.

6. The smart lock according to claim 5, characterized in that: The active key includes a battery, a key control circuit board, and electrical contacts. The battery is electrically connected to the key control circuit board, and the electrical contacts are also electrically connected to the key control circuit board. The electrical contact is configured to cooperate with the conductive probe.

Images