Electronic full-automatic magnetic lock
By designing an electronic fully automatic magnetic lock, the mechanical structure is simplified. By utilizing a motor drive and transmission gear set, combined with position feedback and a safety structure, the problems of large lock volume, high energy consumption, and slow response are solved, achieving fast unlocking and high security.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU LIUFU INTELLIGENT TECH CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-12
AI Technical Summary
Existing locks rely on complex mechanical structures, resulting in large size, high energy consumption, slow response speed, and insufficient unlocking force, making it difficult to meet the requirements of high security and high efficiency.
It adopts an electronic fully automatic magnetic lock design, which uses a motor to drive a rack and pinion and a transmission gear set to drive the lock tongue, simplifying the mechanical structure. Combined with an auxiliary mechanism, it ensures the lock tongue resets, and introduces position feedback and a safety structure to improve reliability and security.
It achieves a compact size, low energy consumption, fast response, and strong unlocking force, making it suitable for use in situations where energy consumption, response speed, and space are limited, thus improving security and reliability.
Smart Images

Figure CN224228415U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lock technology, specifically to an electronic fully automatic magnetic lock. Background Technology
[0002] Existing locks typically rely on complex internal mechanical structures to extend and retract the bolt during locking. This design not only requires a large lock body to accommodate the components, resulting in a bulky overall size, but also consumes a lot of energy and has low energy efficiency. Furthermore, due to the inertia and frictional resistance of mechanical transmission, the lock's response speed is slow, the opening and closing process is not rapid enough, and the force applied during unlocking is relatively small, making it difficult to meet the needs of scenarios with high security and efficiency requirements. Utility Model Content
[0003] Technical problem to be solved by the utility model
[0004] The technical problem to be solved by this utility model is to provide an electronic fully automatic magnetic lock, which has the characteristics of small lock body, low overall power consumption, fast speed and strong unlocking force.
[0005] Technical solution
[0006] To solve the above problems, the technical solution provided by this utility model is as follows:
[0007] An electronic fully automatic magnetic lock includes a main body and a magnet compartment. The main body is provided with a locking tongue that attracts the magnet compartment. The locking tongue is movably configured and connected to a guide rod. The other end of the guide rod is provided with a drive hole. The drive hole is fitted with a drive protrusion. The drive protrusion is located on a rack. The rack is connected to a motor through a transmission gear set. After the rack is displaced, the drive protrusion is located at the extreme position of the drive hole and drives the guide rod to displace.
[0008] The main body contains a latch that engages with a magnet compartment. This latch is movably mounted and connected to a guide rod. The other end of the guide rod has a drive hole that engages with a drive protrusion. The drive protrusion is located on a rack, which is connected to a motor via a transmission gear set. During operation, the motor rotates in only one direction, driving the rack in a linear motion via the transmission gear set. As the rack moves, the drive protrusion moves to the drive hole, pushing the guide rod and disengaging the latch from the magnet compartment, thus unlocking the lock. When relocking is required, since the motor does not reverse, the system can rely on external force (such as a spring or manual operation by the user) to return the latch to its initial position and re-engage with the magnet compartment, or utilize the magnet compartment's own magnetic force to attract the latch back to the locked position. This design simplifies the complex internal structure of traditional mechanical locks, reduces energy consumption, and improves the lock's speed and unlocking capability. Furthermore, considering the non-reverse nature of the motor, an auxiliary mechanism is incorporated to ensure smooth latch reset, maintaining the overall functionality and reliability of the system. This approach is particularly suitable for applications with strict requirements on energy consumption, response speed, and space.
[0009] Optionally, one gear of the transmission gear set is provided with a square steel structure, a driven block is provided on the guide rod, and a driving block for actuating the driven block is provided on the square steel structure.
[0010] In the event of an electronic system failure, the lock can be unlocked mechanically. Specifically, a square steel structure is mounted on one of the gears in the transmission gear set. This square steel structure not only participates in the normal driving process but also has a drive block on it to actuate the driven block on the guide rod. In the event of an electronic system failure, the user can mechanically unlock the lock using the following steps: Manual operation: Insert the square steel into the square steel hole of the square steel structure and directly apply force to the square steel structure by rotating or pushing. Due to the unique non-circular cross-section of the square steel structure, it can effectively transmit linear or rotational force to the drive block during rotation. As the square steel structure rotates, the drive block on it contacts and actuates the driven block on the guide rod, thereby pushing the guide rod to move and causing the bolt to retract from the locked position, completing the unlocking action.
[0011] Optionally, the rack is provided with a measuring protrusion, and a measuring micro-motion is fixedly connected to the guide rod. The measuring micro-motion and the measuring protrusion are located on the same displacement trajectory and are triggered in coordination.
[0012] The positioning protrusion, located on the rack, serves as the source of the trigger signal. When it contacts the positioning micro-motion, it triggers a specific action or state change. The positioning micro-motion, fixed to the guide rod, is a small switching device that generates an electrical signal change when subjected to external physical stimuli (such as contact with the positioning protrusion), thereby informing the control system of the current position information. This allows the system to more accurately determine the actual position of the bolt, improving the overall operational precision of the lock and reducing errors. Precise position feedback effectively avoids locking or unlocking failures due to inaccurate position judgment, improving system reliability. In case of abnormalities, the recorded position information helps to quickly locate the problem, facilitating maintenance and repair.
[0013] Optionally, the main body is provided with a safety structure, which includes a rotatable safety block. The safety block is provided with a limiting slot, and the lock tongue is provided with a limiting protrusion that cooperates with the limiting slot. After the safety block rotates, it locks the lock tongue.
[0014] During use, when the user wishes to enter the deadbolt state, the safety block can be rotated to the designated position via a dedicated operation (such as a knob, button, or remote control). At this point, the safety block completely locks the bolt, preventing it from shifting under any external force. Therefore, even if the motor starts or an external unlocking command is applied, the bolt cannot disengage from the locked position, effectively preventing unauthorized opening. When it is necessary to unlock, the safety block is operated again to reset it. The limit slot separates from the limit protrusion, restoring the bolt's freedom of movement, allowing for normal electronic unlocking. This safety structure not only enhances the lock's security performance but also offers advantages such as ease of operation, rapid response, and high reliability. It is particularly suitable for applications with high security requirements, such as smart home security systems, bank vaults, server room equipment cabinets, and high-end office furniture.
[0015] Optionally, the main body is fixed with a safety micro-switch, and the safety block is provided with a mating groove, which is mated and accommodated with the lever of the safety micro-switch.
[0016] The locking groove engages with the lever of the safety microswitch. When the safety block is in the unlocked state, the lever is embedded in the locking groove, maintaining a stable physical contact that neither hinders the normal rotation of the safety block nor causes false triggering. When the safety block is rotated to the deadbolt position, the locking groove disengages from the lever or changes its relative position, causing the lever to move and trigger the safety microswitch, which outputs a corresponding electrical signal indicating that the lock has entered the deadbolt state. This structural design enables real-time monitoring and feedback of the safety block's status, allowing the control system to accurately determine the lock's security level and implement corresponding control strategies (such as disabling remote unlocking or activating the alarm), thereby significantly improving the lock's security and intelligence.
[0017] Optionally, the rack may also be provided with a detection micro-motion, which engages with the end of the guide rod.
[0018] The rack is equipped with a detection micro-switch: This detection micro-switch is a small sensor or switch mounted at a specific position on the rack. Its main function is to detect whether the rack (and the latch, indirectly linked via the transmission gear set) has reached a predetermined position. The detection micro-switch engages with the end of the guide rod: The end of the guide rod is designed to trigger the detection micro-switch. When the guide rod moves to a specific position, it touches or disengages from the detection micro-switch. This mechanical contact causes a change in the state of the detection micro-switch (e.g., from open to closed or vice versa), thereby generating an electrical signal for the control system to determine the specific position of the latch.
[0019] Optionally, the rack is provided with a guide hole and slidably fitted to a fixed guide protrusion.
[0020] One or more guide holes are provided on one or both sides of the rack, depending on specific needs. These guide holes not only help guide the linear movement of the rack but also effectively distribute the pressure on the rack during movement, extending its service life. The guide protrusions are securely mounted on the lock body and are usually made of a rigid metal to ensure that they maintain their shape even after prolonged use. The guide protrusions and the guide holes on the rack form a precise fit, allowing the rack to maintain extremely high positional accuracy during start-up and stop, avoiding any lateral deviation that could cause operational errors.
[0021] Optionally, the main body also includes a bottom shell, a panel, a controller, and a lock body line, wherein the controller is connected to the motor.
[0022] Base case: Provides basic support and protection for the entire lock, and is usually made of strong and durable materials such as metal or high-strength plastic.
[0023] Panel: Installed on the outside of the lock, it not only has an aesthetic and decorative function, but may also integrate a user interface (such as a touch screen, buttons, etc.) to facilitate user operation.
[0024] Controller: As the core control unit of the lock, it is responsible for processing various input signals and controlling the working status of the motor and other components.
[0025] Lock body wire: Used to connect various electrical components (such as motors, sensors, controllers, etc.) to ensure that electrical signals can be transmitted accurately.
[0026] Beneficial effects
[0027] Compared with the prior art, the technical solution provided by this utility model has the following advantages:
[0028] The technical solution provided by this utility model simplifies the complex internal structure of traditional mechanical locks, reduces energy consumption, and improves the speed and unlocking capability of the lock. Simultaneously, considering the non-reverse characteristic of the motor, an auxiliary mechanism is introduced to ensure the bolt can smoothly reset, maintaining the overall functionality and reliability of the system. This approach is particularly suitable for applications with strict requirements on energy consumption, response speed, and space. Attached Figure Description
[0029] Figure 1 A schematic diagram of the external structure of an electronic fully automatic magnetic lock proposed for an embodiment of this utility model;
[0030] Figure 2 A schematic diagram of the internal structure of an electronic fully automatic magnetic lock proposed for an embodiment of this utility model;
[0031] Figure 3 A partial internal structure diagram of an electronic fully automatic magnetic lock proposed as an embodiment of this utility model;
[0032] 1. Bottom shell; 2. Cover plate; 3. Square steel structure; 301. Drive block; 4. Safety structure; 401. Limiting slot; 402. Mating slot; 5. Lock body line; 6. Lock tongue; 601. Limiting protrusion; 7. Panel; 8. Magnet compartment; 9. Motor; 10. Transmission gear set; 11. Rack; 1101. Guide hole; 1102. Drive protrusion; 1103. Positioning protrusion; 12. Guide rod; 1201. Drive hole; 1202. Positioning micro-motion; 1203. Passive block; 13. Guide protrusion; 14. Safety micro-motion; 15. Detection micro-motion. Detailed Implementation
[0033] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.
[0034] Example 1
[0035] Combined with appendix Figure 1 An electronic fully automatic magnetic lock includes a main body and a magnet compartment 8. The main body has a latch 6 that attracts the magnet compartment 8. The main body also includes a bottom shell 1, a panel 7, a controller, and a lock body wire 5. The controller is connected to a motor 9. The motor 9 is a geared motor 9. The panel 7 is located at the latch 6. The bottom shell 1, panel 7, and cover plate 2 form the outer shell, and the lock body wire 5 extends from the outer shell. The cover plate 2 has a rotation hole for the safety structure 4 and a limiting arc groove. The limiting arc groove cooperates with the round protrusion of the safety block to limit the rotation angle of the safety block. It also has a square steel hole for the square steel structure 3. The latch 6 is made of a magnetizable material. The magnet compartment 8 attracts the latch 6 to move to the left to lock.
[0036] Combined with appendix Figure 2 , 3The locking tongue 6 is movable, meaning it can move left and right, and is connected to a guide rod 12. The other end of the guide rod 12 has a drive hole 1201, which is fitted with a drive protrusion 1102. The drive protrusion 1102 is located on a rack 11, which is connected to a motor 9 via a transmission gear set 10. After the rack 11 is displaced, the drive protrusion 1102 reaches the extreme position of the drive hole 1201 and drives the guide rod 12 to move. The drive protrusion 1102 moves with the rack 11, causing the guide rod 12 to move to the right at the right end of the drive hole 1201, thus dragging the locking tongue 6 to the right to unlock.
[0037] One gear of the transmission gear set 10 has a square steel structure 3, and a driven block 1203 is provided on the guide rod 12. The square steel structure 3 has a driving block 301 for actuating the driven block 1203. The transmission gear set 10 includes a bevel gear and a square steel gear. The output end of the motor 9 has a bevel gear that meshes with the transmission bevel gear. The transmission bevel gear has teeth on its circumference that mesh with the square steel gear. The square steel gear meshes with the rack 11. The square steel gear has a square steel shaft and a square steel hole in the middle, and the driving block 301 extends from the square steel shaft. After rotation, it interferes with and actuates the driven block 1203.
[0038] The rack 11 is provided with a measuring protrusion 1103, and the guide rod 12 is fixedly connected with a measuring micro-motion 1202. The measuring micro-motion 1202 and the measuring protrusion 1103 are located on the same displacement trajectory and cooperate to trigger.
[0039] The main body is provided with a safety structure 4, which includes a rotatable safety block. The safety block is provided with a limiting slot 401, and the locking tongue 6 is provided with a limiting protrusion 601 that cooperates with the limiting slot 401. After the safety block rotates, it locks the locking tongue 6.
[0040] The main body is fixed with a safety micro-switch 14. The safety block has a mating groove 402, which is engaged with the lever of the safety micro-switch 14. The safety micro-switch 14 is fixed, and the safety block is triangular. When the safety is not activated, the locking tongue 6 can move to the right. After rotating clockwise, the locking tongue 6 is stuck and cannot move to the right.
[0041] The rack 11 is also provided with a detection micro-motion 15, which is engaged with the end of the guide rod 12.
[0042] The rack 11 is provided with a guide hole 1101 and is slidably fitted to a fixed guide protrusion 13.
[0043] The positioning micro-switch 1202, the safety micro-switch 14, and the detection micro-switch 15 are all connected to the controller.
[0044] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. An electronic fully automatic magnetic lock, characterized in that, The device includes a main body and a magnet compartment. The main body is provided with a locking tongue that attracts the magnet compartment. The locking tongue is movably configured and connected to a guide rod. The other end of the guide rod is provided with a drive hole. The drive hole is fitted with a drive protrusion. The drive protrusion is located on a rack. The rack is connected to a motor through a transmission gear set. After the rack is displaced, the drive protrusion is located at the extreme position of the drive hole and drives the guide rod to displace.
2. The electronic fully automatic magnetic lock according to claim 1, characterized in that, One gear of the transmission gear set is provided with a square steel structure, a passive block is provided on the guide rod, and a driving block for actuating the passive block is provided on the square steel structure.
3. The electronic fully automatic magnetic lock according to claim 2, characterized in that, The rack is provided with a measuring protrusion, and a measuring micro-motion is fixedly connected to the guide rod. The measuring micro-motion and the measuring protrusion are located on the same displacement trajectory and are triggered in coordination.
4. The electronic fully automatic magnetic lock according to claim 1, characterized in that, The main body is provided with a safety structure, which includes a rotatable safety block. The safety block is provided with a limiting slot, and the lock tongue is provided with a limiting protrusion that cooperates with the limiting slot. After the safety block rotates, it locks the lock tongue.
5. The electronic fully automatic magnetic lock according to claim 4, characterized in that, The main body is fixed with a safety micro-motion, and the safety block is provided with a mating groove, which is matched and accommodated with the lever of the safety micro-motion.
6. The electronic fully automatic magnetic lock according to claim 1, characterized in that, The rack is also equipped with a detection micro-motion, which engages with the end of the guide rod.
7. The electronic fully automatic magnetic lock according to claim 1, characterized in that, The rack is provided with a guide hole and slides into a fixed guide protrusion.
8. An electronic fully automatic magnetic lock according to any one of claims 1 to 7, characterized in that, The main body also includes a bottom shell, a panel, a controller, and a lock body line, with the controller connected to the motor.