Intelligent lock anti-picking alarm device

Abstract

This utility model discloses an anti-pry alarm device for a smart lock, relating to the field of smart home security technology. The utility model includes an outer shell and an inner shell, with a lock body positioned between them. A rectangular groove is formed on one side of the outer shell, and an anti-pry device is fixedly installed inside the groove. The anti-pry device includes a base plate, with multiple pins fixedly connected to one side of the base plate. Springs are fitted onto the outer surfaces of each pin. A pressure sensor is fixedly installed on one side of the base plate. A pressure plate is slidably fitted onto the outer surfaces of the multiple pins. A pressure rod is fixedly connected to one side of the pressure plate. This utility model, through the anti-pry device and the smart lock's built-in clamping structure, achieves the effect of forcibly triggering an alarm even if the alarm circuit is maliciously damaged, and provides a convenient and stable anti-pry device.

Description

Technical Field

[0001] This utility model relates to the technical field of smart home security protection, specifically to a smart lock anti-pry alarm device. Background Technology

[0002] Smart locks are composite locks that integrate modern electronic technology, integrated circuit design, mechanical structure, and modern hardware craftsmanship. They replace traditional mechanical keys with electronic identification and unlocking methods, achieving upgrades in security, convenience, and intelligence. In short, smart locks are not only an upgrade of traditional door locks, but also the core entry point of the home security system. Their technological maturity and functional completeness directly affect the user's security experience.

[0003] However, existing technologies still have the following problems:

[0004] Currently, low-end and budget smart locks, in order to reduce costs, usually only retain basic unlocking functions (such as password and fingerprint recognition) and completely omit the anti-pry alarm module. Although some mid-range products are equipped with simple vibration sensors, they lack accurate recognition capabilities and often falsely trigger alarms due to daily door closing vibrations, pet collisions, etc., or fail to report when subjected to forced entry due to insufficient sensitivity. In addition, when installing smart locks on doors of different materials and thicknesses, traditional anti-pry devices cannot balance stability and anti-false triggering functions. For example, on wooden doors, frequent vibrations may cause false alarms, while on iron doors, the alarm may fail due to insecure installation. Utility Model Content

[0005] To address the issues of limited alarm methods and unstable alarm mechanisms, this invention aims to provide an intelligent lock anti-pry alarm device.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: an intelligent lock anti-pry alarm device, comprising an outer shell and an inner shell, wherein a lock body is provided between the outer shell and the inner shell, a rectangular groove is provided on one side of the outer shell, an anti-pry device is fixedly installed inside the rectangular groove, the anti-pry device includes a base plate, a plurality of pins are fixedly connected to one side of the base plate, springs are sleeved on the outer surfaces of the plurality of pins, a pressure sensor is fixedly installed on one side of the base plate, a pressure plate is slidably sleeved on the outer surfaces of the plurality of pins, and a pressure rod is fixedly connected to one side of the pressure plate.

[0007] Preferably, the outer surface of the rectangular groove is provided with a sliding groove, and a bidirectional lead screw is rotatably connected inside the sliding groove. A clamping plate is symmetrically threaded onto the outer surface of the bidirectional lead screw, and a knob is fixedly connected to one side of the bidirectional lead screw through the outer shell.

[0008] Preferably, the end of the pressure rod is positioned opposite to the sensing surface of the pressure sensor, one end of the pressure rod abuts against the door panel, and a normally closed micro switch is provided between the pressure plate and the pressure sensor.

[0009] Preferably, the anti-pry device is fixedly connected to the inner wall of the rectangular groove via a base plate, and the connection method is screw fastening.

[0010] Preferably, the inner surface of the rectangular groove is symmetrically provided with a plurality of mounting holes distributed at equal intervals, and the outer surface of the base plate is provided with a plurality of connecting holes that cooperate with the mounting holes.

[0011] Preferably, a buzzer is fixedly installed inside the outer casing, and the buzzer is electrically connected to the pressure sensor.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention, through the design of an anti-pry device and a lead screw stabilizing structure, ensures that when the lock is pried, the pressure plate displacement causes the micro switch to disconnect, triggering a buzzer alarm. Simultaneously, a pressure sensor detects sudden pressure changes to assist in confirmation. Even if the alarm circuit is maliciously damaged, it can still force an alarm, accurately identifying prying behavior and significantly reducing the false alarm rate, providing reliable security for smart locks. The design of the bidirectional lead screw and clamping plate allows for flexible adjustment of the anti-pry device's installation tightness via a knob, adapting to the installation needs of different door materials such as wooden and iron doors. The shock-absorbing pads on the inner side of the clamping plate absorb vibrations from daily door opening and closing, preventing false alarms, and also stably transmit external force during prying, ensuring stable operation of the alarm device and effectively improving the device's environmental adaptability and versatility. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the anti-pry device structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the internal structure of the rectangular groove of this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of this utility model.

[0019] In the diagram: 11. Outer shell; 12. Inner shell; 13. Lock body; 14. Rectangular groove; 15. Anti-pry device; 16. Base plate; 17. Pin; 18. Spring; 19. Pressure plate; 20. Pressure sensor; 21. Pressure rod; 22. Connecting hole; 23. Slide groove; 24. Two-way lead screw; 25. Clamping plate; 26. Knob; 27. Mounting hole. Detailed Implementation

[0020] 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.

[0021] Example: Figure 1-4 As shown, this utility model provides an intelligent lock anti-pry alarm device, including an outer shell 11, an inner shell 12, and a lock body 13 disposed between the two. A rectangular groove 14 is opened on one side of the outer shell 11, and an anti-pry device 15 is fixed in the groove by a screw passing through the mounting hole 27 and the connecting hole 22. In this device, the base plate 16 is elastically connected to the pressure plate 19 by a spring 18. The pressure plate 19 is slidably engaged with the base plate 16 via a pin shaft 17. A normally closed micro switch (Omron D2F-01F-T) and a pressure sensor 20 (Dewey Intelligent DWPT) are provided on the side of the pressure plate 19 facing the base plate 16. The micro switch is in contact with the sensing surface of the pressure sensor 20 and is used to convert the door displacement into a circuit on / off signal.

[0022] A sliding groove 23 is opened on the outer surface of the rectangular groove 14. A two-way lead screw 24 is rotatably connected inside the groove. The two ends of the two-way lead screw 24 are symmetrically threaded to clamping plates 25. The clamping plates 25 are driven by the knob 26 to slide along the sliding groove 23 and clamp the anti-pry device 15. The shock-absorbing pad installed on its inner side can absorb the vibration of normal door opening and closing, avoid accidental triggering, and enhance the impact resistance of the device.

[0023] A buzzer (Sida FMQ-12065) is fixedly installed inside the outer casing 11. The buzzer and the micro switch are connected in series to form an alarm circuit. Under normal conditions, the pressure rod 21 presses against the door panel, the spring 18 keeps the pressure plate 19 in its initial position, the micro switch is closed, and the alarm circuit is on standby.

[0024] When the door lock is pried open, the door panel deforms, causing the pressure rod 21 to shift. The pressure plate 19 compresses the spring 18 and disengages from the micro switch, breaking the circuit and triggering the buzzer alarm. At the same time, the pressure sensor 20 detects a sudden change in pressure value that is lower than 70% of the reference threshold, further verifying the alarm signal.

[0025] Working principle: Under normal operating conditions, one end of the pressure rod 21 presses against the door panel. Under the preload of the spring 18, a normally closed micro switch is kept closed between the pressure plate 19 and the sensing surface of the pressure sensor 20, and the alarm circuit is in a conductive state but no alarm signal is triggered. When the door lock is pried, the door panel is displaced, causing the pressure rod 21 to move, which in turn causes the pressure plate 19 to slide along the pin 17 against the elastic force of the spring 18. Once the displacement of the pressure plate 19 exceeds the preset threshold, the micro switch is opened, the state of the alarm circuit changes, and after receiving the circuit disconnection signal, the main control module immediately triggers the buzzer in the housing 11 to emit a high-decibel alarm sound. At the same time, the pressure sensor 20 detects a sudden change in pressure value below the reference pressure threshold, further verifying the prying behavior.

[0026] In addition, by rotating the knob 26 to drive the bidirectional lead screw 24 to rotate, the clamping plate 25 with symmetrical threaded connection slides along the slide groove 23, and the anti-pry device 15 is firmly clamped in the rectangular groove 14. The shock-absorbing pad on its surface can absorb vibration and prevent accidental triggering when the door is opened and closed normally. Furthermore, the anti-pry device 15 can be easily replaced or maintained by the cooperation of the connecting hole 22 and the mounting hole 27.

[0027] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A smart lock anti-pry alarm device, comprising an outer shell (11) and an inner shell (12), characterized in that: A lock body (13) is provided between the outer shell (11) and the inner shell (12). A rectangular groove (14) is provided on one side of the outer shell (11). An anti-pry device (15) is fixedly installed inside the rectangular groove (14). The anti-pry device (15) includes a base plate (16), a plurality of pins (17) are fixedly connected to one side of the base plate (16), springs (18) are sleeved on the outer surface of the plurality of pins (17), a pressure sensor (20) is fixedly installed on one side of the base plate (16), a pressure plate (19) is slidably sleeved on the outer surface of the plurality of pins (17), and a pressure rod (21) is fixedly connected to one side of the pressure plate (19).

2. The intelligent lock anti-pry alarm device as described in claim 1, characterized in that, The outer surface of the rectangular groove (14) is provided with a sliding groove (23), and a two-way screw (24) is rotatably connected inside the sliding groove (23). A clamping plate (25) is symmetrically threaded on the outer surface of the two-way screw (24). One side of the two-way screw (24) passes through the outer shell (11) and is fixedly connected to a knob (26).

3. The intelligent lock anti-pry alarm device as described in claim 1, characterized in that, The end of the pressure rod (21) is positioned opposite to the sensing surface of the pressure sensor (20), one end of the pressure rod (21) abuts against the door panel, and a normally closed micro switch is provided between the pressure plate (19) and the pressure sensor (20).

4. The intelligent lock anti-pry alarm device as described in claim 1, characterized in that, One end of the spring (18) is fixedly connected to the base plate (16), and the other end is fixedly connected to the pressure plate (19), which is used to provide a restoring force for the pressure plate (19).

5. The intelligent lock anti-pry alarm device as described in claim 1, characterized in that, The anti-pry device (15) is fixedly connected to the inner wall of the rectangular groove (14) through the base plate (16) and the connection method is screw fastening.

6. The intelligent lock anti-pry alarm device as described in claim 2, characterized in that, The outer surfaces of the sliding groove (23) and the rectangular groove (14) are slidably attached to the outer surface of the clamping plate (25), and a shock-absorbing pad is fixedly installed on one side of the clamping plate (25).

7. The intelligent lock anti-pry alarm device as described in claim 2, characterized in that, The inner surface of the rectangular groove (14) is symmetrically provided with a plurality of mounting holes (27) distributed at equal intervals, and the outer surface of the base plate (16) is provided with a plurality of connecting holes (22) that cooperate with the mounting holes (27).

8. The intelligent lock anti-pry alarm device as described in claim 1, characterized in that, A buzzer is fixedly installed inside the outer casing (11), and the buzzer is electrically connected to the pressure sensor (20).

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