Intelligent door lock with prying-resistant function

By introducing a self-lubricating design of an oil reservoir and slide system into the smart lock, combined with the alarm function of the pressure-sensitive conductive line and magnetic battery, the problem of lock body wear is solved, achieving a longer lifespan and improved security for the lock body.

CN224120067UActive Publication Date: 2026-04-14DONGGUAN ZHENMING MOLD PLASTIC
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN ZHENMING MOLD PLASTIC
Filing Date
2025-02-11
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

Existing smart door locks suffer from insufficient lubrication, leading to wear and tear on the internal structure of the lock body due to prolonged rotation, which affects their service life and convenience.

Method used

A smart door lock was designed. By incorporating an oil reservoir and a sliding system within the lock body, the rotation of the door handle drives a sliding plate to allow lubricating oil to drip into the lock body, achieving self-lubrication. Combined with a pressure-sensitive conductive line and a magnetic battery, the lock enables real-time monitoring and alarm functions to prevent unauthorized intrusion.

Benefits of technology

It effectively prevents lock body wear and extends service life, while improving security through real-time monitoring and alarm functions, preventing unauthorized intrusion, and enhancing user experience.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224120067U_ABST
    Figure CN224120067U_ABST
Patent Text Reader

Abstract

The utility model relates to the field of Internet of Things smart home, and discloses an intelligent door lock with an anti-prying function, which comprises an intelligent lock, the outer wall of the intelligent lock is fixedly connected with a lock body, the inner wall of the lock body is fixedly connected with an oil storage tank, the bottom of the oil storage tank is fixedly connected with a bottom plate, the bottom plate is internally provided with a sliding chute, and the sliding chute is fixedly connected with the oil storage tank. The inner wall of the bottom plate is fixedly connected with two telescopic connecting rods, the outer walls of the two telescopic connecting rods are sleeved with telescopic springs, one end of each telescopic connecting rod is fixedly connected with a sliding plate, the bottom of each sliding plate is fixedly connected with a clamping plate, and the inner wall of the lock body is slidably connected with a lock block. According to the intelligent lock, the automatic oil injection device is additionally arranged in the lock body, so that lubricating oil is automatically dripped into the lock body, the problem that a door is difficult to open and close due to abrasion of the whole intelligent lock caused by long-time rotation of the internal structure of the lock body is solved, the service life of the door lock is prolonged, and a householder can open and close the door more easily.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of IoT smart home, and in particular to a smart door lock with anti-pry function. Background Technology

[0002] Anti-pry smart locks utilize high-tech methods to enhance security. Through multiple detection and alarm systems, they effectively prevent unauthorized intrusion and lock-picking. The main benefits of anti-pry smart locks lie in enhancing home security, improving access control convenience, and integrating into smart home systems. Through various advanced technologies and functions, they effectively prevent illegal intrusion, improving users' quality of life and convenience. Anti-pry smart locks are primarily used in residential homes, offices and apartments, hotels and guesthouses, special locations, and smart home systems.

[0003] Smart locks with anti-pry features not only possess high anti-pry performance in their physical structure, but also utilize electronic technology to achieve real-time monitoring and instant alarms, greatly enhancing the security and convenience of these locations. However, existing technologies sometimes suffer from insufficient lubrication of the lock body due to inadequate lubrication, leading to wear and tear on the internal structure from prolonged rotation. This results in sluggish operation and a reduced lifespan, leading to a poor user experience and even requiring lock replacement. Therefore, smart locks with anti-pry features are proposed to address these issues. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an intelligent door lock with anti-pry function, which aims to improve the problem that insufficient lubrication of the lock body caused by the lubrication method of some existing intelligent door locks leads to wear and tear on the internal structure of the lock body due to long-term rotation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A smart door lock with anti-pry function includes a smart lock, a lock body fixedly connected to the outer wall of the smart lock, an oil tank fixedly connected to the inner wall of the lock body, a base plate fixedly connected to the bottom of the oil tank, a sliding groove opened inside the base plate, two telescopic connecting rods fixedly connected to the inner wall of the base plate, a telescopic spring sleeved on the outer wall of the two telescopic connecting rods, a sliding plate fixedly connected to one end of the two telescopic connecting rods, a locking plate fixedly connected to the bottom of the sliding plate, a lock block slidably connected to the inner wall of the lock body, a fixing plate fixedly connected to the top of the lock block, and a locking pin fixedly connected to the outer wall of the fixing plate.

[0007] As a further description of the above technical solution:

[0008] The smart lock has a control panel fixedly connected to its inner wall, a signal line fixedly connected to the outer wall of the control panel, a motor fixedly connected to one end of the signal line, a connecting line fixedly connected to the outer wall of the motor, a buzzer fixedly connected to one end of the connecting line, another signal line fixedly connected to the outer wall of the buzzer, and two pressure-sensitive conductive lines fixedly connected to the inner wall of the smart lock, with two magnetic batteries fixedly connected to one end of each pressure-sensitive conductive line.

[0009] As a further description of the above technical solution:

[0010] A smart panel is fixedly connected to the outer wall of the smart lock, and a camera is fixedly connected to the inside of the smart panel;

[0011] As a further description of the above technical solution:

[0012] The smart lock has a door handle rotatably connected inside. One end of the door handle is fixedly connected to a rotating rod, and one end of the rotating rod is rotatably connected to a transmission rod. The transmission rod has a lock cylinder detachably connected inside.

[0013] As a further description of the above technical solution:

[0014] The outer wall of the lock head is detachably connected to the interior of the rotating column;

[0015] As a further description of the above technical solution:

[0016] The smart lock has a clutch starter fixedly connected inside, and a sensor wire is fixedly connected to the outer wall of the clutch starter. One end of the sensor wire is fixedly connected to the outer wall of the motor.

[0017] As a further description of the above technical solution:

[0018] The inner wall of the lock body is slidably connected to a lock cylinder;

[0019] As a further description of the above technical solution:

[0020] A telescopic rod is fixedly connected to the outer wall of the lock block, and a locking tongue is fixedly connected to one end of the telescopic rod. A return spring is sleeved on the outer wall of the telescopic rod.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, rotating the door handle drives the rotating rod and the transmission rod to rotate, which in turn causes the lock block to slide. The sliding of the lock block causes the fixing plate and the locking pin to slide inward. Through contact with the locking plate, the sliding plate is driven to slide. The sliding of the sliding plate exposes the groove, and the lubricating oil stored in the oil tank drips down, achieving the purpose of lubricating the entire internal mechanism of the lock body. This prevents the delicate internal structure of the lock body from wearing out during long-term rotation, which would cause difficulty in opening and closing the door. This improves the service life of the door lock and makes it easier for the homeowner to open and close the door.

[0023] 2. In this utility model, when the pressure-sensitive button is pressed, it supplies magnetism to the magnetic battery through the pressure-sensitive transmission line. When the pressure-sensitive button clearly senses a change in pressure, the pressure-sensitive transmission line stops supplying magnetism to the magnetic battery. The magnetic battery falls and contacts the buzzer, triggering the buzzer. The buzzer sends a signal to the control panel, which then controls the motor to cut off power, preventing the door from being opened by the handle. This prevents criminals from prying open the lock and committing theft. Furthermore, the camera sends photos to the homeowner, allowing them to understand the situation, make a judgment, and take action to minimize losses. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the smart door lock with anti-pry function proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the buzzer of the smart door lock with anti-pry function proposed in this utility model.

[0026] Figure 3 This is a schematic diagram of the rotating column of the smart door lock with anti-pry function proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the oil storage tank of the smart door lock with anti-pry function proposed in this utility model.

[0028] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0029] Legend:

[0030] 1. Smart lock; 2. Smart panel; 3. Camera; 4. Door handle; 5. Lock body; 6. Lock tongue; 7. Clutch starter; 8. Lock cylinder; 9. Control panel; 10. Signal line; 11. Motor; 12. Transmission rod; 13. Rotating rod; 14. Connecting line; 15. Buzzer; 16. Sensor line; 17. Pressure-sensitive button; 18. Pressure-sensitive transmission line; 19. Magnetic battery; 20. Rotating column; 21. Return spring; 22. Telescopic rod; 23. Lock block; 24. Oil reservoir; 25. Slide; 26. Base plate; 27. Fixing plate; 28. Locking post; 29. ​​Locking plate; 30. Slide plate; 31. Telescopic spring; 32. Telescopic connecting rod; 33. Lock cylinder. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figure 1 , Figure 4 , Figure 5 This utility model provides an embodiment of an intelligent door lock with anti-pry function, including an intelligent lock 1. A lock body 5 is fixedly connected to the outer wall of the intelligent lock 1, and the lock body 5 is controlled by the intelligent lock 1 to lock the door. An oil tank 24 is fixedly connected to the inner wall of the lock body 5 for storing lubricating oil. A base plate 26 is fixedly connected to the bottom of the oil tank 24. A sliding groove 25 is opened inside the base plate 26 to facilitate the sliding of the sliding plate 30. Two telescopic connecting rods 32 are fixedly connected to the inner wall of the base plate 26 to facilitate the sliding of the sliding plate 30 laterally back and forth in the sliding groove 25. A telescopic spring 31 is sleeved on the outer wall of the two telescopic connecting rods 32 to facilitate the reset of the sliding plate 30. One end of the two telescopic connecting rods 32 is fixedly connected to the sliding plate 30 to facilitate the control of the sliding plate 30.

[0033] A locking plate 29 is fixedly connected to the bottom of the sliding plate 30. The locking plate 29 is moved by the movement of the locking pin 28. A locking block 23 is slidably connected to the inner wall of the lock body 5 to facilitate the control of the locking tongue 6. A fixing plate 27 is fixedly connected to the top of the locking block 23 to fix the locking pin 28. The locking pin 28 is fixedly connected to the outer wall of the fixing plate 27. The movement of the locking block 23 drives the movement of the fixing plate 27 and the locking pin 28. A telescopic rod 22 is fixedly connected to the outer wall of the locking block 23 to fix the return spring 21. The locking tongue 6 is fixedly connected to one end of the telescopic rod 22 to drive the movement of the locking tongue 6. The return spring 21 is sleeved on the outer wall of the telescopic rod 22.

[0034] The smart lock 1 has a door handle 4 internally connected to control the opening and closing of the door. One end of the door handle 4 is fixedly connected to a rotating rod 13. The rotation of the door handle 4 drives the rotating rod 13 to move. One end of the rotating rod 13 is rotatably connected to a transmission rod 12. The rotation of the rotating rod 13 is controlled by the up and down movement of the lock column below the transmission rod 12. The transmission rod 12 has a lock head 8 detachably connected inside. It is used to link the movement of the door handle 4 and the inside of the lock body 5 to achieve the purpose of controlling the opening and closing of the door. The outer wall of the lock head 8 is detachably connected to the inside of the rotating column 20. The rotation of the lock head 8 controls the rotation of the rotating column 20.

[0035] Reference Figure 1 , Figure 2 , Figure 3 The inner wall of the smart lock 1 is fixedly connected to a control panel 9 for controlling smart devices and a motor 11. The outer wall of the control panel 9 is fixedly connected to a signal line 10 for transmitting control signals to the motor 11. One end of the signal line 10 is fixedly connected to the motor 11 for starting the motor 11. The outer wall of the motor 11 is fixedly connected to a connecting line 14 for switching the buzzer 15 on and off. One end of the connecting line 14 is fixedly connected to the buzzer 15 for anti-pry purposes. The outer wall of the buzzer 15 is fixedly connected to another signal line 10 for transmitting signals to the control panel 9.

[0036] A pressure-sensitive button 17 is fixedly connected to the outer wall of the smart lock 1. Two pressure-sensitive conductive wires 18 are fixedly connected inside the pressure-sensitive button 17. When the pressure changes significantly, the magnetic force of the magnetic battery 19 is controlled. Two magnetic batteries 19 are fixedly connected to one end of the two pressure-sensitive conductive wires 18. When the pressure changes, the magnetic force of the magnetic battery 19 disappears and it falls down.

[0037] A smart panel 2 is fixedly connected to the outer wall of the smart lock 1 for inputting passwords and fingerprints. A camera 3 is fixedly connected inside the smart panel 2 for facial recognition. A clutch starter 7 is fixedly connected inside the smart lock 1. When the starter is activated, the top of the clutch moves upward, causing the lock to move upward. A sensor wire 16 is fixedly connected to the outer wall of the clutch starter 7 for controlling the switch of the clutch starter 7. One end of the sensor wire 16 is fixedly connected to the outer wall of the motor 11 for power supply. A lock cylinder 33 is slidably connected to the inner wall of the lock body 5.

[0038] Working principle: When the face, fingerprint or password is confirmed by the smart panel 2, the control panel 9 sends a signal to the motor 11 through the signal line 10. After receiving the signal, the motor 11 supplies power to the clutch starter 7. The push plate above the clutch starter 7 moves upward, pushing the lock into the slot inside the rotating rod 13 and the transmission rod 12. Then, by turning the door handle 4, the rotating rod 13 and the transmission rod are driven to rotate. The rotation of the transmission rod drives the lock head 8 to rotate. The lock head drives the rotating column 20 to rotate. The rotation of the rotating column 20 drives the lock block 23 to slide inward, thereby driving the lock tongue 6 to slide inward. At the same time, it also drives the lock cylinder 33 to retract inward. The sliding of the lock block 23 causes the fixing plate 27 and the locking pin 28 to slide inward. Through contact with the locking plate 29, the sliding plate 30 is driven to slide. The sliding of the sliding plate 30 exposes the sliding groove 25. Then, the lubricating oil stored in the oil tank 24 drips down, thereby lubricating the entire lock body.

[0039] When the smart lock is fixed to the door, the pressure-sensitive button 17 will be pressed down. When the pressure-sensitive button 17 is pressed down, the pressure-sensitive conduction line 18 keeps the magnetic battery 19 magnetically attracted. When the pressure-sensitive button 17 has a significant pressure change, the pressure-sensitive conduction line 18 no longer supplies magnetism to the magnetic battery 19. The magnetic battery 19 falls downward and triggers the buzzer 15. The buzzer sounds an alarm and sends a signal to the control panel 9 through the signal line. The control panel 9 controls the camera 3 to take a picture and send it to the homeowner's mobile phone. It also sends a power-off signal to the motor 11 through another signal line, causing the clutch starter 7 to fail. Thus, the smart lock 1 and lock body 5 cannot be controlled by the door handle 4 to pry open the door.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A smart door lock with anti-pry function, comprising a smart lock (1), characterized in that: The smart lock (1) is fixedly connected to a lock body (5) on its outer wall. An oil tank (24) is fixedly connected to the inner wall of the lock body (5). A base plate (26) is fixedly connected to the bottom of the oil tank (24). A sliding groove (25) is provided inside the base plate (26). Two telescopic connecting rods (32) are fixedly connected to the inner wall of the base plate (26). A telescopic spring (31) is sleeved on the outer wall of the two telescopic connecting rods (32). A sliding plate (30) is fixedly connected to one end of the two telescopic connecting rods (32). A locking plate (29) is fixedly connected to the bottom of the sliding plate (30). A lock block (23) is slidably connected to the inner wall of the lock body (5). A fixing plate (27) is fixedly connected to the top of the lock block (23). A locking post (28) is fixedly connected to the outer wall of the fixing plate (27).

2. The smart door lock with anti-pry function according to claim 1, characterized in that: The smart lock (1) has a control panel (9) fixedly connected to its inner wall. The control panel (9) has a signal line (10) fixedly connected to its outer wall. One end of the signal line (10) is fixedly connected to a motor (11). The outer wall of the motor (11) is fixedly connected to a connecting line (14). One end of the connecting line (14) is fixedly connected to a buzzer (15). The outer wall of the buzzer (15) is fixedly connected to another signal line (10). The smart lock (1) has a pressure-sensitive button (17) fixedly connected to its outer wall. The pressure-sensitive button (17) has two pressure-sensitive conductive lines (18) fixedly connected inside. One end of each of the two pressure-sensitive conductive lines (18) is fixedly connected to two magnetic batteries (19).

3. The smart door lock with anti-pry function according to claim 1, characterized in that: The smart lock (1) has a smart panel (2) fixedly connected to its outer wall, and a camera (3) is fixedly connected to the inside of the smart panel (2).

4. The smart door lock with anti-pry function according to claim 3, characterized in that: The smart lock (1) is internally connected to a door handle (4), one end of which is fixedly connected to a rotating rod (13), and one end of the rotating rod (13) is rotatably connected to a transmission rod (12). The transmission rod (12) is internally detachably connected to a lock head (8).

5. The smart door lock with anti-pry function according to claim 4, characterized in that: The outer wall of the lock head (8) is detachably connected to a rotating column (20).

6. The smart door lock with anti-pry function according to claim 2, characterized in that: The smart lock (1) is internally connected to a clutch starter (7), and the outer wall of the clutch starter (7) is fixedly connected to a sensor wire (16). One end of the sensor wire (16) is fixedly connected to the outer wall of the motor (11).

7. The smart door lock with anti-pry function according to claim 1, characterized in that: The inner wall of the lock body (5) is slidably connected to a lock cylinder (33).

8. The smart door lock with anti-pry function according to claim 1, characterized in that: The outer wall of the locking block (23) is fixedly connected to a telescopic rod (22), one end of which is fixedly connected to a locking tongue (6), and a return spring (21) is sleeved on the outer wall of the telescopic rod (22).