High security electrically controlled lock

Abstract

The utility model discloses a high safety performance electric control lock, including the lock body box, be provided with the lock body anti -disassembly piece, mechanical unlocking mechanism, safety link, big tongue subassembly, safety tongue subassembly, electric unlocking mechanism and seven micro -switches in the lock body box, big tongue subassembly and safety tongue subassembly can be telescopic and set up in the lock body box, mechanical unlocking mechanism includes lock and unlocking swing lever, electric unlocking mechanism includes motor, pinion, big gear, big tongue unlocking plate and motor control panel, seven micro -switches are safety tongue switch, motor stop switch, big bevel tongue switch, safety link switch, lock body anti -disassembly switch, unlocking swing lever switch and lock removal switch respectively, the rear side of lock body box is provided with the plug -in terminal, and seven micro -switches and motor are electrically connected with the plug -in terminal respectively. The utility model can realize mechanical and electric two completely independent mode control, and the state of main spare is monitored in real time through seven micro -switches, and electric control lock safety performance is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically to a high-security electronically controlled lock. Background Technology

[0002] Currently, the storage of valuables and confidential documents with high security requirements necessitates high-security locks. As the actuator, the quality of the lock directly affects the stability of the entire security system.

[0003] In the current door lock industry, traditional mechanical locks rely solely on key mechanical transmission for unlocking, lacking status feedback and anti-tamper protection, making them unsuitable for intelligent scenarios. While ordinary smart door locks have electric unlocking functions, they suffer from several core defects: First, the release of the safety lock and the pulling action of the bolt are not synchronized, easily leading to malfunctions such as "motor freewheeling" and "bolt jamming." Second, they lack a full-action signal feedback mechanism, making it impossible to monitor the status of lock components in real time (such as whether the bolt is in position and whether the safety lock is released). Third, their anti-tampering and cylinder anti-tampering designs are inadequate, posing a risk of unauthorized disassembly. Fourth, the mechanical and electric unlocking logics are disconnected, making repair and debugging difficult and hindering users from quickly locating the fault.

[0004] Meanwhile, the microswitches in existing door locks are generally insufficient or have limited functionality, only able to provide feedback on some key states (such as whether the door is closed), and cannot cover core actions such as cylinder disassembly, safety linkage action, and unlocking lever swing, making it difficult for intelligent systems to accurately determine the working status of the lock body, thus affecting the safety and stability of use. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-security electric lock that can be controlled by both mechanical and electric methods in a completely independent manner. It can also monitor the status of the main components in real time through seven microswitches, which greatly improves the security performance of the electric lock.

[0006] The technical solution to achieve the above objectives is: a high-security electric lock, comprising a lock body box, wherein the lock body box is equipped with a lock body anti-tamper plate, a mechanical unlocking mechanism, a safety linkage, a bolt assembly, a safety bolt assembly, an electric unlocking mechanism, and seven micro switches, wherein:

[0007] The lock body anti-tamper plate is located on one side of the lock body box;

[0008] The mechanical unlocking mechanism, the latch assembly, the electric unlocking mechanism, and the safety latch assembly are arranged sequentially from left to right within the lock body box; the latch assembly and the safety latch assembly are telescopically arranged within the lock body box.

[0009] The mechanical unlocking mechanism includes a lock cylinder and an unlocking lever; the lock cylinder has lock holes on its front and back, and contains a blade assembly and a lock cylinder tail support connected thereto; one end of the unlocking lever is hinged to the lock body box via a pivot, and the other end of the unlocking lever has an L-shaped swing head, which consists of a longitudinal part and a transverse part, and the rear end of the longitudinal part of the L-shaped swing head has an inclined surface; the lock cylinder tail support is engaged with the middle part of the unlocking lever via a slot;

[0010] The safety linkage is telescopically mounted within the lock body via a linkage return spring. The safety linkage includes a left transverse section, a longitudinal section, and a right transverse section. The left transverse section is connected to the front end of the longitudinal section, and the right transverse section is connected to the rear end of the longitudinal section. A linkage pivot is located at the upper end of the connection between the left transverse section and the longitudinal section. When the latch assembly is locked, the linkage pivot contacts the inclined surface of the longitudinal section of the L-shaped swing head. Two square top posts are located at the bottom of the right transverse section, one on the left and one on the right. The safety linkage locks or unlocks the latch assembly via these two square top posts.

[0011] During mechanical unlocking, the key rotates within the keyhole, causing the tail section of the lock cylinder to extend and retract forward and backward via the blade assembly. This extension and retraction of the tail section causes the unlocking lever to swing back and forth around the pivot. As the unlocking lever swings backward, the connecting rod moves along the longitudinal section of the L-shaped swing head, pushing the safety connecting rod to extend to the right, unlocking the latch assembly. Furthermore, the unlocking lever pushes the latch assembly to retract inward, thus achieving mechanical unlocking.

[0012] The electric unlocking mechanism includes a motor, a pinion, a large gear, a latch unlocking plate, and a motor control board. The motor is located between the latch assembly and the safety latch assembly. The pinion is connected to the output end of the motor. The large gear is rotatably mounted inside the lock body box, and the pinion meshes with the upper surface of the large gear. A limiting boss is provided on the outer periphery of the large gear. The latch unlocking plate and the motor control board are respectively located on the left and right sides of the large gear. The middle part of the latch unlocking plate is rotatably mounted inside the lock body box, and the rear end of the latch unlocking plate contacts the right transverse part of the safety linkage. The rear end of the motor control board is rotatably mounted inside the lock body box.

[0013] When the electric unlocking is performed, the motor drives the large gear to rotate through the small gear. The limiting boss on the outer periphery of the large gear pushes the large tongue unlocking plate to swing, causing the safety linkage to extend to the right, unlocking the large tongue assembly. The large gear continues to rotate, and the limiting boss pushes the large tongue assembly to retract inward, thus realizing electric unlocking.

[0014] The seven microswitches are a safety latch switch, a motor stop switch, a large bevel switch, a safety linkage switch, a lock body anti-disassembly switch, an unlocking lever switch, and a lock cylinder disassembly switch.

[0015] The rear side of the lock body box is provided with a plug-in terminal. The safety latch switch, motor stop switch, large latch switch, safety linkage switch, lock body anti-disassembly switch, unlocking swing arm switch, lock cylinder disassembly switch and motor are respectively electrically connected to the plug-in terminal through connecting wires.

[0016] The aforementioned high-security electronic lock includes the following components: a latch switch located near the latch assembly to sense the latch's extension / retraction state and provide feedback on the door's open / closed status; a motor stop switch located near the motor control board to control the motor's start / stop; a large latch switch located below the longitudinal portion of the safety linkage to sense the large latch's extension / retraction state and provide feedback on the lock body's core locking or unlocking status; a safety linkage switch located at the end of the left transverse portion of the safety linkage to sense the linkage's displacement and provide feedback on whether the safety mechanism is released; an anti-tamper switch located near the lock body's anti-tamper plate to sense the plate's displacement, provide feedback on whether the lock body has been removed from the door, and trigger an anti-tamper alarm signal; an unlocking lever switch located near the unlocking lever to sense its swing state and provide feedback on the unlocking action's execution status; and a lock cylinder removal switch located near the lock cylinder to sense its position, provide feedback on whether the lock cylinder has been removed from the lock body, and trigger an abnormal lock cylinder removal alarm signal.

[0017] The aforementioned high-security electronic lock comprises, from left to right, a cylinder mounting port, a large latch mounting port, and a safety latch mounting port on the front side of the lock body box; the cylinder is mounted in the cylinder mounting port by two cylinder fixing screws; retractable metal corners are provided on both sides of the cylinder, which extend out when the lock body is locked and engage with the corresponding cylinder fixing screws, at which time the cylinder fixing screws cannot be rotated; when the lock body is unlocked, the metal corners retract into the cylinder and disengage from the corresponding cylinder fixing screws, at which time the cylinder fixing screws can be rotated.

[0018] The aforementioned high-security electronic lock, wherein the latch assembly includes a large oblique latch, a large latch return spring, a large latch main body, a large latch auxiliary body, and a large latch locking plate, wherein:

[0019] The large oblique tongue is located inside the large oblique tongue mounting opening; the large oblique tongue is connected to the head end of the large tongue main body, and the tail end of the large tongue main body is provided with two large tongue limiting grooves that are adapted to the two square top posts. In the locked state, the two square top posts are respectively inserted into the two large tongue limiting grooves.

[0020] The large tongue auxiliary drag body is located above the large tongue main drag body. The large tongue auxiliary drag body is provided with a first longitudinal elongated hole, a second longitudinal elongated hole and a third longitudinal elongated hole from front to back. The front part of the large tongue auxiliary drag body is connected to the lock body box through the auxiliary drag body return spring.

[0021] The front of the main body of the large tongue is provided with a large tongue return spring connecting post. The large tongue return spring connecting post passes through the first longitudinal elongated hole and is connected to one end of the large tongue return spring. The other end of the large tongue return spring is fixed to the lock body box.

[0022] A large tongue protrusion is provided in the middle of the main body of the large tongue, and the large tongue protrusion is located behind the lateral part of the L-shaped swing head.

[0023] The large tongue plate has horizontal elongated holes on the left and right sides, and a plate spring connecting post is provided in the middle of the large tongue plate.

[0024] Two locking plate connecting posts are provided on the left and right sides of the rear of the main towing body of the large tongue. The large tongue locking plate is located above the large tongue auxiliary towing body. The locking plate connecting post on the right side passes through the third longitudinal elongated hole and can be moved left and right to be connected to the transverse elongated hole on the right side of the large tongue locking plate. The locking plate connecting post on the left side can be moved left and right to be connected to the transverse elongated hole on the left side of the large tongue locking plate. The locking plate spring connecting post is connected to the locking plate connecting post on the left side through the locking plate spring.

[0025] The main body of the large tongue is provided with a main elongated hole, which is located below the second longitudinal elongated hole;

[0026] In the fully unlocked state, the left side of the large tongue plate engages with the longitudinal part of the safety link, and the large tongue auxiliary tow body and the large tongue main tow body are not linked; in the locked state, the left side of the large tongue plate disengages from the longitudinal part of the safety link, and the right side of the large tongue plate engages with the large tongue auxiliary tow body, and the large tongue auxiliary tow body and the large tongue main tow body are linked.

[0027] The aforementioned high-security electronic lock includes a safety latch assembly comprising a safety latch, a safety latch return spring, and a safety latch body. The safety latch is disposed within the safety latch mounting opening and is connected to the head end of the safety latch body. One end of the safety latch return spring is connected to the lock body housing, and the other end is connected to the safety latch body. The tail end of the safety latch body contacts the right lateral portion of the safety linkage. When the safety latch retracts inward, the safety latch body moves backward, and the end of the safety latch body pushes the safety linkage to retract to the left. The two square top posts are correspondingly engaged in the two large latch limiting grooves, achieving the safety locking of the large oblique latch.

[0028] In the aforementioned high-security electronic lock, during mechanical unlocking, the unlocking lever swings to extend the safety linkage to the right, and the square top post disengages from the corresponding tongue limiting groove to release the safety lock of the large tongue; then the lateral part of the L-shaped swing head pushes the tongue protrusion to move backward, thereby causing the entire tongue assembly to retract inward.

[0029] In the aforementioned high-security electric lock, the left end of the left transverse portion of the safety linkage is connected to the lock body box via a pivot; one end of the linkage return spring is fixed to the lock body box, and the other end of the linkage return spring is connected to the left transverse portion of the safety linkage.

[0030] In the aforementioned high-security electric lock, the large tongue unlocking plate is located between the main large tongue body and the auxiliary large tongue body. During electric unlocking, the motor drives the large gear to rotate via a small gear. The limiting boss on the outer periphery of the large gear pushes the large tongue unlocking plate to swing, causing the safety linkage to extend to the right. The square top post disengages from the corresponding large tongue limiting groove, releasing the safety lock of the large tongue. As the large gear continues to rotate, the limiting boss on the outer periphery of the large gear pushes the auxiliary large tongue body to move backward, thereby causing the entire large tongue assembly to retract inward.

[0031] Compared with the prior art, the high-security electric lock of this utility model has the following advantages:

[0032] (1) Dual-mode unlocking is synchronous and reliable: Mechanical unlocking and electric unlocking share the core logic of "first release the safety and then pull the bolt". Through the linkage design of the safety linkage and the bolt plate, the main bolt body and the auxiliary bolt body of the bolt are accurately engaged and disengaged, which completely solves the problems of "motor running idle" and "bolt jamming" and improves the unlocking success rate.

[0033] (2) Real-time feedback of all action status: Seven micro switches precisely cover core components such as the safety tongue, large oblique tongue, safety linkage, and unlocking swing rod, as well as security scenarios such as anti-disassembly and lock cylinder disassembly. Each action outputs a signal synchronously, which can monitor the working status of the lock body in real time and provide data support for remote monitoring and fault early warning.

[0034] (3) Multiple security protection upgrades: The lock body or lock cylinder is integrated with an anti-tamper switch and a lock cylinder removal switch. An alarm signal is immediately triggered when the lock body or lock cylinder is illegally disassembled. The lock cylinder fixing screws can only be turned after the key is unlocked, which prevents the lock cylinder from being maliciously removed and significantly improves the level of security protection.

[0035] (4) Convenient and efficient maintenance and debugging: The mechanical and electric unlocking logic is unified, and the actions of each component correspond to the signal feedback. Maintenance personnel can quickly locate the faulty component through signal feedback (such as the motor not stopping, which corresponds to the motor stop switch failure), and the debugging efficiency is significantly improved.

[0036] (5) Automatic and stable automatic reset: After the door is opened, the safety tongue will automatically pop out, driving all components back to the lockable state without any additional operation, ensuring that the door lock is always in a reliable lockable / locked cycle, reducing the risk of failure due to components not being reset. Attached Figure Description

[0037] Figure 1 This is a diagram showing the internal structure of the high-security electric lock of this utility model;

[0038] Figure 2 This is an exploded structural diagram of the high-security electric lock of this utility model;

[0039] Figure 3 This is a schematic diagram of the lock cylinder of the high-security electric lock of this utility model;

[0040] Figure 4 This is a schematic diagram of the unlocking lever of the high-security electric lock of this utility model;

[0041] Figure 5 This is a schematic diagram of the safety linkage of the high-security electric lock of this utility model;

[0042] Figure 6 This is an exploded structural diagram of the electric unlocking mechanism of the high-security electric lock of this utility model;

[0043] Figure 7 This is an exploded structural diagram of the latch assembly of the high-security electric lock of this utility model;

[0044] Figure 8 This is a schematic diagram of the safety tongue assembly of the high-security electric lock of this utility model;

[0045] Figure 9 This is a diagram showing the distribution of the seven microswitches in the high-security electric lock of this utility model;

[0046] Figure 10 This is the electrical schematic diagram of the high-security electric lock of this utility model. Detailed Implementation

[0047] To enable those skilled in the art to better understand the technical solution of this utility model, its specific embodiments are described in detail below with reference to the accompanying drawings:

[0048] Please see Figures 1 to 10 The preferred embodiment of this utility model is a high-security electric lock, which includes a lock body box 1. The lock body box 1 is provided with a lock body anti-disassembly plate 4, a mechanical unlocking mechanism, a safety linkage 5, a large tongue assembly, a safety tongue assembly, an electric unlocking mechanism, and seven micro switches.

[0049] The lock body anti-tamper plate 4 is located on one side of the lock body box 1. When the electric lock is installed, one end of the lock body anti-tamper plate 4 is attached to the door mounting surface. When the electric lock is disassembled, the lock body anti-tamper plate 4 will be displaced.

[0050] The mechanical unlocking mechanism, the latch assembly, the electric unlocking mechanism, and the safety latch assembly are arranged sequentially from left to right inside the lock body box 1; the latch assembly and the safety latch assembly are telescopically arranged inside the lock body box 1.

[0051] The front side of the lock body box 1 has, from left to right, a lock cylinder mounting port 11, a large latch bolt mounting port 12, and a safety latch mounting port 13. A cover plate 15 is provided at the upper end of the lock body box 1.

[0052] The mechanical unlocking mechanism includes a lock cylinder 2 and an unlocking lever 3. A liner 16 is provided between the lock cylinder 2 and the lock body box 1.

[0053] Please see again Figure 3 The cylinder 2 has lock holes on its front and back. Inside the cylinder 2 is a blade assembly 21 and a cylinder tail support 22 connected to it. The cylinder 2 is installed inside the lock body box 1 by two cylinder fixing screws 23. The cylinder 2 has retractable metal corners 24 on both sides. After the cylinder fixing screws 23 pass through the lock body box 1, the metal corners 24 extend out when the lock body is locked and are engaged with the corresponding cylinder fixing screws 23. At this time, the cylinder fixing screws 23 cannot be rotated, and the cylinder 2 cannot be removed when the lock body is locked. When the lock body is unlocked, the metal corners 24 retract into the cylinder 2 and disengage from the corresponding cylinder fixing screws 23. At this time, the cylinder fixing screws 23 can be rotated. This realizes the rotation control of the cylinder fixing screws 23. The cylinder 2 can only be disassembled when the lock body is unlocked, which prevents the cylinder from being maliciously removed and significantly improves the security level.

[0054] Please see again Figure 4 One end of the unlocking lever 3 is hinged to the lock body box 1 via a pivot 33. The other end of the unlocking lever 3 has an L-shaped swing head 31, which consists of a longitudinal part and a transverse part. The rear end of the longitudinal part of the L-shaped swing head 31 has an inclined surface 32. The tail of the lock cylinder 22 is engaged with the middle part of the unlocking lever 3 via a slot. The lower end of the L-shaped swing head 31 is connected to the lock body box 1 via a lever return spring 34.

[0055] Please see again Figure 5The safety link 5 is telescopically mounted in the lock body box 1 via the link return spring 54. The safety link 5 includes a left transverse part 51, a longitudinal part 52, and a right transverse part 53. The left transverse part 51 is connected to the front end of the longitudinal part 52, and the right transverse part 53 is connected to the rear end of the longitudinal part 52. A link swing post 55 is provided at the upper end of the connection between the left transverse part 51 and the longitudinal part. When the latch assembly is locked, the link swing post 55 contacts the inclined surface 32 of the longitudinal part of the L-shaped swing head 31. Two square top posts 56 are provided on the left and right sides at the bottom end of the right transverse part. The safety link 5 locks or unlocks the latch assembly through the two square top posts 56.

[0056] The left end of the left transverse portion 51 of the safety link 5 is connected to the lock body box 1 via a pivot; one end of the link return spring 54 is fixed to the lock body box 1, and the other end of the link return spring 54 is connected to the left transverse portion of the safety link 51. In this way, when the safety link 5 is not under force, the link return spring 54 can realize the automatic reset of the safety link 5.

[0057] During mechanical unlocking, the key rotates within the keyhole, causing the cylinder tail section 23 to extend and retract back and forth via the blade assembly 21. This extension and retraction of the cylinder tail section 23 causes the unlocking lever 3 to swing back and forth around the pivot 33. When the unlocking lever 3 swings backward, the connecting rod 55 moves along the longitudinal section of the L-shaped swing head 31, pushing the safety connecting rod 5 to extend to the right, unlocking the latch assembly. Simultaneously, the unlocking lever 3 pushes the latch assembly to retract inward, thus achieving mechanical unlocking. The cylinder 2 and the unlocking lever 3 constitute the core transmission path for mechanical unlocking.

[0058] Please see again Figure 6 The electric unlocking mechanism includes a motor 81, a pinion 82, a large gear 83, a large latch unlocking plate 84, and a motor control plate 85. The motor 81 is located between the large latch mounting port 12 and the safety latch mounting port 13. The pinion 82 is connected to the output end of the motor 81. The large gear 83 is rotatably mounted inside the lock body box 1, and the pinion 82 meshes with the upper surface of the large gear 83. A limiting boss 86 is provided on the outer periphery of the large gear 83. The large latch unlocking plate 84 and the motor control plate 85 are located on the left and right sides of the large gear 83, respectively. The middle part of the large latch unlocking plate 84 is rotatably mounted inside the lock body box 1, and the rear end of the large latch unlocking plate 84 contacts the right transverse part 53 of the safety linkage 5. The rear end of the motor control plate 85 is rotatably mounted inside the lock body box 1, and the middle part of the motor control plate 85 is connected to the lock body box 1 through a control plate return spring.

[0059] When the lock is unlocked electrically, the motor 81 drives the large gear 83 to rotate through the small gear 82. The limiting boss 86 on the outer periphery of the large gear 83 pushes the large tongue unlocking plate 84 to swing, causing the safety linkage 5 to extend to the right, unlocking the large tongue assembly. The large gear 83 continues to rotate, and the limiting boss 86 pushes the large tongue assembly to retract inward, realizing electric unlocking.

[0060] Please see again Figure 7 The large tongue assembly includes a large oblique tongue 61, a large tongue return spring 62, a large tongue main body 63, a large tongue auxiliary body 64, and a large tongue locking plate 65. The large oblique tongue 61 is located inside the large oblique tongue mounting port 12; the large oblique tongue 61 is connected to the head end of the large tongue main body 63, and the tail end of the large tongue main body 63 is provided with two large tongue limiting grooves 631 that are adapted to the two square top posts 56. In the locked state, the two square top posts 56 are respectively inserted into the two large tongue limiting grooves 631 to achieve the safety locking of the large oblique tongue.

[0061] The auxiliary tongue support 64 is positioned above the main tongue support 63. From front to back, the auxiliary tongue support 64 has a first longitudinal elongated hole 641, a second longitudinal elongated hole 642, and a third longitudinal elongated hole 643. The front of the auxiliary tongue support 64 is connected to the lock body box 1 via an auxiliary support return spring 644.

[0062] The front of the main body 63 of the large tongue is provided with a large tongue return spring connecting post 632. The large tongue return spring connecting post 632 passes through the first longitudinal elongated hole 641 and is connected to one end of the large tongue return spring 62. The other end of the large tongue return spring 62 is fixed to the lock body box 1. The large tongue return spring 62 is used to realize the automatic reset of the large oblique tongue 61. The middle of the main body 63 of the large tongue is provided with a large tongue protrusion 633. The large tongue protrusion 633 is located behind the lateral part of the L-shaped swing head 31. When the L-shaped swing head 31 swings backward, the lateral part of the L-shaped swing head 31 will push the large tongue protrusion 633 to move backward, thereby causing the large oblique tongue 61 to retract inward.

[0063] The large tongue plate 65 has horizontal elongated holes 651 and 652 on its left and right sides, respectively, and a plate spring connecting post 653 is provided in the middle of the large tongue plate 65. The left end of the large tongue plate 65 is a flange that is folded upwards, and the right end of the large tongue plate 65 is a flange that is folded downwards.

[0064] Two locking plate connecting posts 634 and 635 are provided on the left and right sides of the rear of the main body 63 of the large tongue. The large tongue locking plate 65 is located above the large tongue auxiliary body 64. The locking plate connecting post 635 on the right side passes through the third longitudinal elongated hole 643 and can move left and right to connect to the transverse elongated hole 652 on the right side of the large tongue locking plate. The locking plate connecting post 634 on the left side can move left and right to connect to the transverse elongated hole 651 on the left side of the large tongue locking plate. The locking plate spring connecting post 653 is connected to the locking plate connecting post 634 on the left side through the locking plate spring 654.

[0065] The main body 63 of the large tongue is provided with a main elongated hole 636, which is located below the second longitudinal elongated hole 642. A guide post is provided between the main elongated hole 636 and the second longitudinal elongated hole 642, and the bottom end of the guide post is fixed to the lock body box.

[0066] In the fully unlocked state, the left side of the large tongue plate 65 engages with the longitudinal part 52 of the safety linkage 5, while the right side of the large tongue plate 65 does not engage with the large tongue auxiliary tow body 64. The large tongue auxiliary tow body 64 and the large tongue main tow body 65 are two independent components and do not move together. In the locked state, due to the action of the safety linkage 5, the left side of the large tongue plate 65 disengages from the longitudinal part 52 of the safety linkage 5, and the large tongue plate 65 pops out to the right. The right side of the large tongue plate 65 engages with the large tongue auxiliary tow body 64, connecting the large tongue auxiliary tow body 64 and the large tongue main tow body 63 together to form a linkage component. The large tongue auxiliary tow body 64 and the large tongue main tow body 63 move together.

[0067] Please see again Figure 8 The safety latch assembly includes a safety latch 71, a safety latch return spring 72, and a safety latch body 73. The safety latch 71 is disposed in the safety latch mounting opening 13 and is connected to the head end of the safety latch body 73. One end of the safety latch return spring 71 is connected to the lock body box 1, and the other end is connected to the safety latch body 73. The tail end of the safety latch body 73 contacts the right transverse portion 53 of the safety linkage 5. When the safety latch 71 retracts inward, the safety latch body 73 moves backward, and the end of the safety latch body 73 pushes the safety linkage 5 to retract to the left. The two square top posts 56 are correspondingly engaged in the two large latch limit grooves 631 to achieve the safety locking of the large oblique latch 61.

[0068] When the mechanical unlocking is performed, the unlocking lever 3 swings, causing the safety link 5 to extend to the right, and the square top post 56 disengages from the corresponding tongue limit groove 631 to release the safety lock of the large tongue; then the lateral part of the L-shaped swing head 31 pushes the tongue protrusion 633 to move backward, thereby driving the entire tongue assembly to retract inward.

[0069] The large tongue unlocking plate 84 is located between the main large tongue body 63 and the auxiliary large tongue body 64. When unlocking electrically, the motor 81 drives the large gear 83 to rotate through the small gear 82. The limiting boss 86 on the outer periphery of the large gear 83 pushes the large tongue unlocking plate 84 to swing, causing the safety linkage 5 to extend to the right. The square top post 56 disengages from the corresponding large tongue limiting groove 631 to release the safety lock of the large tongue. The large gear 83 continues to rotate, and the limiting boss 86 on the outer periphery of the large gear pushes the auxiliary large tongue body 64 to move backward. Since the large tongue locking plate 65 connects the auxiliary large tongue body 64 and the main large tongue body 63 together to form a linkage component, it will drive the entire large tongue assembly to retract inward, realizing electric unlocking.

[0070] When the door is fully unlocked (i.e., not closed) and both the large latch 61 and the safety latch 71 are extended outwards, the safety linkage 6 is not under force, and the left side of the large latch plate 65 engages with the longitudinal part 52 of the safety linkage 5. The large latch auxiliary body 64 and the large latch main body 65 are two independent components. At this time, if the motor 81 rotates, the limiting boss 86 on the outer periphery of the large gear pushes the large latch auxiliary body 64 to move backward. Then, the large latch auxiliary body 64 moves forward under the pull of the auxiliary body return spring 644. In this way, only the large latch auxiliary body 64 moves back and forth, and the other components of the large latch assembly do not move.

[0071] Please see again Figure 1 and Figure 9 This utility model of a high-security electric lock features seven micro switches: a safety latch switch 91, a motor stop switch 92, a large latch switch 93, a safety linkage switch 94, a lock body anti-disassembly switch 95, an unlocking lever switch 96, and a lock cylinder removal switch 97. A plug-in terminal 14 is located on the rear side of the lock body box 1. The safety latch switch 91, motor stop switch 92, large latch switch 93, safety linkage switch 94, lock body anti-disassembly switch 95, unlocking lever switch 96, lock cylinder removal switch 97, and motor 81 are electrically connected to the plug-in terminal 14 via connecting wires. The plug-in terminal 14 can be connected to an external controller 100. A dust cover 17 is provided on the outside of the plug-in terminal 14.

[0072] The safety latch switch 91 is located near the safety latch assembly and is used to sense the extension and retraction state of the safety latch 71, thereby providing feedback on the door's open / closed state. When the door is closed, the safety latch retracts inward; when the door is open, the safety latch extends outward. The spring of the safety latch switch 91 can fit against the tail of the safety latch 71, and the safety latch switch 91 is triggered as the safety latch 71 extends or retracts.

[0073] The motor stop switch 92 is located near the motor control board 85 and is used to control the start and stop of the motor. The spring of the motor stop switch 92 is aligned with the outer edge of the motor control board 85. When the motor 81 drives the large gear 83 to rotate, it will sequentially release the safety and unlock the door. During the rotation, when the large gear 83 rotates to the designated position, the limiting boss 86 on the outer periphery of the large gear 83 contacts the motor control board 85 and pushes the motor control board 85 to swing to the right. The motor control board 85 squeezes the spring of the motor stop switch 92, triggering the motor stop switch 92. The motor stop switch 92 can send a signal to an external controller, which controls the motor 81 to stop running to avoid overload.

[0074] The large latch switch 93 is located below the longitudinal part 52 of the safety link 5. The spring of the large latch switch 93 is in contact with the side of the main body of the large latch and is used to sense the extension and retraction status of the large latch and provide feedback on the locking or unlocking status of the lock core. When the large latch extends or retracts, the extension and retraction action of the main body of the large latch will trigger the spring of the large latch switch 93.

[0075] The safety linkage switch 94 is located at the end of the left horizontal part 51 of the safety linkage 5. It is used to sense the displacement of the safety linkage 5 and provide feedback on whether the safety is released. The spring of the safety linkage switch 94 is in contact with the left side of the left horizontal part 51 of the safety linkage 5. When the safety linkage 5 retracts to the left or extends to the right, the safety linkage switch 94 promptly provides the displacement signal of the safety linkage 5 to the controller. When it retracts to the left, the safety is locked corresponding to the large latch; when it extends to the right, the safety is released corresponding to the large latch.

[0076] The anti-tamper switch 95 is located near the anti-tamper plate 4 of the lock body. It is used to sense the displacement of the anti-tamper plate 4 of the lock body and to provide feedback on whether the lock body has been removed from the door. The spring of the anti-tamper switch 95 is connected to the anti-tamper plate 4 of the lock body. One end of the anti-tamper plate 4 of the lock body is attached to the door mounting surface. When the lock body is removed, the anti-tamper plate 4 of the lock body will be displaced, triggering the spring of the anti-tamper switch 95. The anti-tamper switch 95 sends a lock body removal signal to the controller, triggering the anti-tamper alarm signal.

[0077] The unlocking lever switch 96 is located near the unlocking lever 3 to sense the swing state of the unlocking lever 3 and provide feedback on the unlocking action execution state. The spring of the unlocking lever switch 96 is attached to the side of the unlocking lever 3 and is triggered when the unlocking lever 3 swings. When the unlocking lever 3 swings backward, it is performing a mechanical unlocking action.

[0078] The lock cylinder removal switch 97 is located near the lock cylinder 2 and is used to sense the position of the lock cylinder and provide feedback on whether the lock cylinder has been removed from the lock body. The spring of the lock cylinder removal switch 97 is in contact with the outer wall of the lock cylinder. When the lock cylinder is removed, the spring rebounds and triggers an abnormal removal alarm signal to the controller.

[0079] The high-security electronic lock of this utility model has the following complete mechanical unlocking process (compatible with both front and back keys):

[0080] (1) Initial locking state: The large tongue 61 pops out and locks, and the two square top posts 56 below the safety link 5 are respectively inserted into the two large tongue limit grooves 631 at the tail end of the large tongue main drag body 63. At this time, the large tongue 61 cannot be pushed, the safety tongue 71 is squeezed and stuck inside by the door frame, and the lock cylinder fixing screw 23 is stuck by the metal corner 24 (the lock cylinder fixing screw 23 cannot be rotated). The corresponding micro switches are all in the initial signal state.

[0081] (2) Key insertion and rotation: The key is inserted into the lock hole and rotated, which drives the tail of the lock cylinder 22 to move, triggering the unlocking lever 3 to swing. The unlocking lever switch 96 sends the unlocking lever swing signal to the controller.

[0082] (3) Release the safety: The unlocking lever 3 pushes the safety linkage 4 to extend to the right, and the safety linkage switch 94 sends a signal to the controller that the safety linkage extends. The square top post 56 disengages from the large tongue limit groove 631, and the safety is released.

[0083] (4) Pull the large tongue: The unlocking lever 3 continues to move, and the horizontal part of the L-shaped swing head 31 pushes the large tongue protrusion 633 to move backward, thereby driving the large tongue to retract inward. At this time, the large tongue switch 93 sends a large tongue retraction status signal to the controller.

[0084] (5) Opening and resetting: After the door is pushed open, the safety tongue 71 pops out without being squeezed by the door frame. The safety tongue switch 91 will send a signal to the controller to extend the safety tongue. The safety linkage 5 will spring back, the large oblique tongue 61 will pop out, the metal corner 24 will extend and lock the lock cylinder fixing screw 23, and all parts will return to the lockable state.

[0085] The high-security electric lock of this utility model has the following complete electric unlocking process:

[0086] (1) Initial locking state: consistent with the initial state of mechanical unlocking, the large latch is locked, the safety is activated, and each micro switch maintains the initial signal;

[0087] (2) Motor start drive: After receiving the power signal, the motor 81 drives the large gear 83 to rotate, and the limiting boss 86 on the outer periphery of the large gear 83 pushes the large tongue unlocking plate 84 to swing.

[0088] (3) Release the safety: The large tongue unlocking plate 84 drives the safety linkage 5 to extend to the right, and the square top post 56 disengages from the corresponding large tongue limit groove 631 to release the safety lock of the large tongue; the safety linkage switch 94 sends a safety linkage extension signal to the controller;

[0089] (4) Pull the large tongue: The large gear 83 continues to rotate, and the limiting boss 86 on the outer periphery of the large gear pushes the large tongue auxiliary body 64 to move backward, which in turn drives the entire large tongue assembly to retract inward, realizing electric unlocking. At this time, the large tongue switch 93 sends a large tongue retraction status signal to the controller.

[0090] (5) Motor stops: When the large gear 83 rotates to the designated position, it triggers the motor stop switch 92. The motor stop switch 92 sends a signal to the external controller, and the controller controls the motor 81 to stop running.

[0091] (6) Opening and Resetting: After the door is pushed open, the safety tongue 71 pops out without being squeezed by the door frame. The safety tongue switch 91 will send a signal to the controller to extend the safety tongue. The safety linkage 5 will spring back, the large oblique tongue 61 will pop out, the metal corner 24 will extend and lock the lock cylinder fixing screw 23, and all parts will return to the lockable state.

[0092] This utility model of a high-security electronic lock has the following key linkage logic (the core mechanism in the locked state):

[0093] (1) When fully unlocked, the large tongue auxiliary towing body 64 is separated from the large tongue main towing body 63, and the motor 81 runs idle and cannot pull the large oblique tongue.

[0094] (2) When locked, the large tongue plate 65 connects the large tongue auxiliary body 64 and the large tongue main body 63 together to form a linkage component. When mechanically / electrically unlocking, the safety linkage 5 is first pushed by the unlocking swing rod 3 / large gear to release the safety, and then the large tongue is pulled back.

[0095] (3) All actions, such as displacement of major components, disassembly of lock body, and removal of lock cylinder, trigger the corresponding micro switch in real time and output a synchronous signal to feedback the status, which greatly improves the safety performance of the electric control lock.

[0096] In summary, the high-security electric lock of this invention can achieve both mechanical and electric control, and the status of key components can be monitored in real time through seven microswitches, which greatly improves the security performance of the electric lock.

[0097] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any changes or modifications to the above embodiments within the scope of the essential spirit of the present utility model will fall within the scope of the claims of the present utility model.

Claims

1. A high-security electronically controlled lock, comprising a lock body box, characterized in that, The lock body housing contains a lock body anti-tamper plate, a mechanical unlocking mechanism, a safety lever, a bolt assembly, a safety bolt assembly, an electric unlocking mechanism, and seven micro switches, among which: The lock body anti-tamper plate is located on one side of the lock body box; The mechanical unlocking mechanism, the latch assembly, the electric unlocking mechanism, and the safety latch assembly are arranged sequentially from left to right within the lock body box; the latch assembly and the safety latch assembly are telescopically arranged within the lock body box. The mechanical unlocking mechanism includes a lock cylinder and an unlocking lever; the lock cylinder has lock holes on its front and back, and contains a blade assembly and a lock cylinder tail support connected thereto; one end of the unlocking lever is hinged to the lock body box via a pivot, and the other end of the unlocking lever has an L-shaped swing head, which consists of a longitudinal part and a transverse part, and the rear end of the longitudinal part of the L-shaped swing head has an inclined surface; the lock cylinder tail support is engaged with the middle part of the unlocking lever via a slot; The safety linkage is telescopically mounted within the lock body via a linkage return spring. The safety linkage includes a left transverse section, a longitudinal section, and a right transverse section. The left transverse section is connected to the front end of the longitudinal section, and the right transverse section is connected to the rear end of the longitudinal section. A linkage pivot is located at the upper end of the connection between the left transverse section and the longitudinal section. When the latch assembly is locked, the linkage pivot contacts the inclined surface of the longitudinal section of the L-shaped swing head. Two square top posts are located at the bottom of the right transverse section, one on the left and one on the right. The safety linkage locks or unlocks the latch assembly via these two square top posts. During mechanical unlocking, the key rotates within the keyhole, causing the tail section of the lock cylinder to extend and retract forward and backward via the blade assembly. This extension and retraction of the tail section causes the unlocking lever to swing back and forth around the pivot. As the unlocking lever swings backward, the connecting rod moves along the longitudinal section of the L-shaped swing head, pushing the safety connecting rod to extend to the right, unlocking the latch assembly. Furthermore, the unlocking lever pushes the latch assembly to retract inward, thus achieving mechanical unlocking. The electric unlocking mechanism includes a motor, a pinion, a large gear, a latch unlocking plate, and a motor control board. The motor is located between the latch assembly and the safety latch assembly. The pinion is connected to the output end of the motor. The large gear is rotatably mounted inside the lock body box, and the pinion meshes with the upper surface of the large gear. A limiting boss is provided on the outer periphery of the large gear. The latch unlocking plate and the motor control board are respectively located on the left and right sides of the large gear. The middle part of the latch unlocking plate is rotatably mounted inside the lock body box, and the rear end of the latch unlocking plate contacts the right transverse part of the safety linkage. The rear end of the motor control board is rotatably mounted inside the lock body box. When the electric unlocking is performed, the motor drives the large gear to rotate through the small gear. The limiting boss on the outer periphery of the large gear pushes the large tongue unlocking plate to swing, causing the safety linkage to extend to the right, unlocking the large tongue assembly. The large gear continues to rotate, and the limiting boss pushes the large tongue assembly to retract inward, thus realizing electric unlocking. The seven microswitches are a safety latch switch, a motor stop switch, a large bevel switch, a safety linkage switch, a lock body anti-disassembly switch, an unlocking lever switch, and a lock cylinder disassembly switch. The rear side of the lock body box is provided with a plug-in terminal. The safety latch switch, motor stop switch, large latch switch, safety linkage switch, lock body anti-disassembly switch, unlocking swing arm switch, lock cylinder disassembly switch and motor are respectively electrically connected to the plug-in terminal through connecting wires.

2. The high-security electronic lock according to claim 1, characterized in that, The latch switch is located near the latch assembly and is used to sense the extension and retraction state of the latch, providing feedback on the door's open / closed status. The motor stop switch is located near the motor control board and is used to control the motor's start and stop. The large latch switch is located below the longitudinal part of the safety linkage and is used to sense the extension and retraction state of the large latch, providing feedback on the lock body core's locked or unlocked status. The safety linkage switch is located at the end of the left transverse part of the safety linkage and is used to sense the displacement of the safety linkage, providing feedback on whether the safety has been released. The anti-tamper switch is located near the lock body anti-tamper plate and is used to sense the displacement of the lock body anti-tamper plate, providing feedback on whether the lock body has been removed from the door and triggering an anti-tamper alarm signal. The unlocking lever switch is located near the unlocking lever and is used to sense the swing state of the unlocking lever, providing feedback on the unlocking action execution status. The lock cylinder removal switch is located near the lock cylinder and is used to sense the position of the lock cylinder, providing feedback on whether the lock cylinder has been removed from the lock body and triggering a lock cylinder abnormal removal alarm signal.

3. The high-security electronic lock according to claim 1, characterized in that, The front side of the lock body box has, from left to right, a cylinder mounting port, a large latch mounting port, and a safety latch mounting port. The cylinder is installed in the cylinder mounting port by two cylinder fixing screws. The cylinder has retractable metal corners on both sides. When the lock body is locked, the metal corners extend and engage with the corresponding cylinder fixing screws, at which time the cylinder fixing screws cannot be rotated. When the lock body is unlocked, the metal corners retract into the cylinder and disengage from the corresponding cylinder fixing screws, at which time the cylinder fixing screws can be rotated.

4. A high-security electronic lock according to claim 3, characterized in that, The large tongue assembly includes a large oblique tongue, a large tongue return spring, a large tongue main body, a large tongue auxiliary body, and a large tongue locking plate, wherein: The large oblique tongue is located inside the large oblique tongue mounting opening; the large oblique tongue is connected to the head end of the large tongue main body, and the tail end of the large tongue main body is provided with two large tongue limiting grooves that are adapted to the two square top posts. In the locked state, the two square top posts are respectively inserted into the two large tongue limiting grooves. The large tongue auxiliary drag body is located above the large tongue main drag body. The large tongue auxiliary drag body is provided with a first longitudinal elongated hole, a second longitudinal elongated hole and a third longitudinal elongated hole from front to back. The front part of the large tongue auxiliary drag body is connected to the lock body box through the auxiliary drag body return spring. The front of the main body of the large tongue is provided with a large tongue return spring connecting post. The large tongue return spring connecting post passes through the first longitudinal elongated hole and is connected to one end of the large tongue return spring. The other end of the large tongue return spring is fixed to the lock body box. A large tongue protrusion is provided in the middle of the main body of the large tongue, and the large tongue protrusion is located behind the lateral part of the L-shaped swing head. The large tongue plate has horizontal elongated holes on the left and right sides, and a plate spring connecting post is provided in the middle of the large tongue plate. Two locking plate connecting posts are provided on the left and right sides of the rear of the main towing body of the large tongue. The large tongue locking plate is located above the large tongue auxiliary towing body. The locking plate connecting post on the right side passes through the third longitudinal elongated hole and can be moved left and right to be connected to the transverse elongated hole on the right side of the large tongue locking plate. The locking plate connecting post on the left side can be moved left and right to be connected to the transverse elongated hole on the left side of the large tongue locking plate. The locking plate spring connecting post is connected to the locking plate connecting post on the left side through the locking plate spring. The main body of the large tongue is provided with a main elongated hole, which is located below the second longitudinal elongated hole; In the fully unlocked state, the left side of the large tongue plate engages with the longitudinal part of the safety link, and the large tongue auxiliary tow body and the large tongue main tow body are not linked; in the locked state, the left side of the large tongue plate disengages from the longitudinal part of the safety link, and the right side of the large tongue plate engages with the large tongue auxiliary tow body, and the large tongue auxiliary tow body and the large tongue main tow body are linked.

5. A high-security electronic lock according to claim 4, characterized in that, The safety latch assembly includes a safety latch, a safety latch return spring, and a safety latch body. The safety latch is disposed within the safety latch mounting opening and is connected to the head end of the safety latch body. One end of the safety latch return spring is connected to the lock body box, and the other end is connected to the safety latch body. The tail end of the safety latch body contacts the right lateral portion of the safety linkage. When the safety latch retracts inward, the safety latch body moves backward, and the end of the safety latch body pushes the safety linkage to retract to the left. The two square top posts are correspondingly engaged in the two large latch limiting grooves to achieve the safety locking of the large oblique latch.

6. A high-security electronic lock according to claim 5, characterized in that, When mechanically unlocking, the unlocking lever swings, causing the safety linkage to extend to the right, and the square top post disengages from the corresponding tongue limiting groove to release the safety lock of the large tongue; then the lateral part of the L-shaped swing head pushes the large tongue protrusion to move backward, thereby driving the entire large tongue assembly to retract inward.

7. A high-security electronic lock according to claim 5, characterized in that, The left end of the left transverse portion of the safety link is connected to the lock body box via a pivot; one end of the link return spring is fixed to the lock body box, and the other end of the link return spring is connected to the left transverse portion of the safety link.

8. A high-security electronic lock according to claim 4, characterized in that, The large tongue unlocking plate is located between the main body and the auxiliary body of the large tongue. When the electric unlocking is performed, the motor drives the large gear to rotate through the small gear. The limiting boss on the outer periphery of the large gear pushes the large tongue unlocking plate to swing, causing the safety linkage to extend to the right. The square top post disengages from the corresponding large tongue limiting groove, releasing the safety lock of the large tongue. The large gear continues to rotate, and the limiting boss on the outer periphery of the large gear pushes the auxiliary body of the large tongue to move backward, thereby causing the entire large tongue assembly to retract inward.

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