Anti-drilling and anti-chiseling intelligent lock

Abstract

The anti-drilling and anti-chiseling intelligent lock comprises a lock body, a hard reinforcing plate is arranged in the lock body, a containing space is defined by the hard reinforcing plate, a motor clutch driving device, a handle assembly and an encryption circuit board are arranged in the containing space, and a main control board is further arranged in the lock body. The encryption circuit board is electrically connected with the main control board through a wire. According to the scheme, key components such as the interior of the handle assembly, the motor clutch driving device and the encrypted circuit board are protected in a wrapping mode by arranging the hard reinforcing plate, so that a drilling tool is difficult to touch a core assembly, and particularly the drilling tool cannot touch the motor clutch driving device and the encrypted circuit board. In addition, by arranging the encryption circuit board, the situation of illegal wiring unlocking is effectively eradicated, lawbreakers cannot unlock the intelligent lock in an illegal wiring mode even if other parts, not wrapped by the hard reinforcing plate, of the lock body are drilled, and the safety performance is greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of locks, and in particular to a drill-proof and chisel-proof smart lock. Background Art

[0002] With the improvement of people's living standards and the continuous advancement of technology, smart locks, as a new type of security device, are gradually gaining popularity and being widely used in various fields such as homes, offices, and hotels. With their convenience, security, and high level of intelligence, smart locks have gradually replaced traditional mechanical locks and become the mainstream product in the market. The emergence of smart locks not only provides users with more convenient unlocking methods such as fingerprint recognition, password unlocking, card unlocking, and mobile phone remote unlocking, but also realizes real-time monitoring and management of door lock status through advanced electronic and communication technologies, greatly improving the safety and convenience of people's lives and work.

[0003] However, the smart locks currently on the market still have some shortcomings in terms of security. Although smart locks are constantly developing in electronic security technology, their protection capabilities are relatively weak when facing physical damage.

[0004] On the one hand, some criminals resort to violent means like drilling and chiseling to destroy locks. Existing smart locks often lack effective physical protection within their internal structures. Key components like the motor clutch drive and handle assembly are either exposed or protected only by simple plastic casings. These protective structures can easily be breached by specialized drilling or chiseling tools, damaging the lock's core components. This can render the lock inoperable and render it inoperable, effectively failing to protect the user's property and personal safety.

[0005] On the other hand, some criminals attempt to unlock the door by damaging the lock's wiring and making illegal connections. Existing smart lock circuit board designs often fail to fully account for this security risk, often lacking encryption or employing inadequate encryption. Once the lock's casing is damaged, exposing the wiring, criminals could potentially bypass the normal unlocking verification mechanism by wiring it in, easily opening the door and posing a significant security risk to users.

[0006] To improve the drill and chisel resistance of smart locks, some manufacturers have adopted methods such as thickening the outer shell and adding metal protective layers. However, these methods often only reinforce the exterior of the lock without effectively protecting the key internal components. Once the outer shell is breached, the key internal components are still vulnerable to damage.

[0007] In summary, existing smart locks have significant deficiencies in preventing drilling and chiseling, as well as preventing unlocking through illegal wiring. There is an urgent need for a new smart lock that can effectively address these issues. The present invention's drill- and chisel-resistant smart lock is designed to address these existing issues, providing a smart lock product with enhanced security and reliability. Summary of the Invention

[0008] The present invention overcomes the deficiencies of the above-mentioned technologies and provides a drill-proof and chisel-proof smart lock.

[0009] To achieve the above object, the present invention adopts the following technical solutions:

[0010] A drill-proof and chisel-proof smart lock includes a lock body, a hard reinforcing plate is provided in the lock body, and the hard reinforcing plate encloses a accommodating space. A motor clutch drive device, a handle assembly and an encryption circuit board are provided in the accommodating space. A main control board is also provided in the lock body, and the encryption circuit board is electrically connected to the main control board via a wire.

[0011] Furthermore, the rigid reinforcement plate includes a bottom plate and side plates arranged around the bottom plate, and the bottom plate and the side plates together enclose a receiving space.

[0012] Furthermore, connecting ears are connected to the upper and lower side plates, mounting holes are provided on the connecting ears, and connecting columns are provided in the lock body to penetrate into the corresponding mounting holes.

[0013] Furthermore, the rigid reinforcing plate is made of a metal alloy material.

[0014] Furthermore, the hard reinforcing plate is made of titanium alloy material.

[0015] Furthermore, the hardness of the hard reinforcement plate is greater than or equal to HRC65, and the carburized thickness is greater than or equal to 0.3 mm.

[0016] Furthermore, the rigid reinforcing plate is manufactured by integral molding.

[0017] Furthermore, an anti-drilling layer is provided on the outer wall surface of the lock body, and the thickness of the anti-drilling layer is 0.5-2 mm.

[0018] Furthermore, the anti-drilling layer is made of diamond material.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] In this case, a rigid reinforcement plate is installed to protect key components such as the interior of the handle assembly, the motor clutch drive mechanism, and the encryption circuit board. This makes it difficult for drilling tools to reach core components, especially the motor clutch drive mechanism and the encryption circuit board. Furthermore, the encryption circuit board effectively prevents unauthorized wiring to unlock the smart lock. Even if criminals drill into other parts of the lock body not covered by the rigid reinforcement plate, they cannot access the smart lock through illegal wiring, significantly improving security. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is one of the structural diagrams of the smart lock in this case.

[0022] Figure 2 It is a structural diagram of the rigid reinforcement plate in this case.

[0023] Figure 3 This is the second structural diagram of the smart lock in this case. DETAILED DESCRIPTION

[0024] The features of the present invention and other related features are further described in detail below through examples to facilitate understanding by those skilled in the art:

[0025] like Figures 1 to 3As shown, this case provides a drill-proof and chisel-proof smart lock, including a lock body 100. The lock body 100 is the main frame of the smart lock and the basic carrier of the entire smart lock. The outer shell material of the lock body 100 is usually metal or composite material. In specific implementation, the metal material used for the lock body 100 can be selected from stainless steel, aluminum alloy and other materials. The composite material used for the lock body 100 can be selected from stainless steel / aluminum alloy skeleton for internal strength and engineering plastic or resin material for external wrapping. This composite material uses both protection and lightness, reducing costs; the plastic shell can achieve colorful color matching or texture design, and the metal skeleton ensures the impact resistance of key parts. A hard reinforcement plate 1 is provided in the lock body 100, and the hard reinforcement plate 1 encloses a storage space 200, and the storage space 200 is provided with a motor clutch drive device 2, a handle assembly 3 and an encryption circuit board 4. The motor clutch drive device 2, the handle assembly 3, the encryption circuit board 4 and other key components are completely wrapped by the hard reinforcement plate 1. In this way, it can effectively resist violent acts of destruction such as drilling and chiseling, and provide reliable physical protection for key internal components. The hard reinforcing plate 1 forms protection from a mechanical level through its metal material and closed structure, which can prevent drilling tools such as electric drills and chisels from directly contacting core components. The encryption circuit board 4 plays a role from an electronic level, and through signal encryption and anomaly detection functions, it prevents criminals from bypassing the normal authentication process, such as directly short-circuiting the circuit after destroying the outer shell. Through the synergistic effect of the encryption circuit board 4 and the hard reinforcing plate 1, a double layer of mechanical and electronic protection is formed. The motor clutch drive device 2 described in the present invention is a well-known technology in the field of locks, and it is not the focus of protection of the present invention, so it will not be elaborated on. Those who are familiar with this technology can select a suitable motor clutch drive device 2 in the prior art according to actual use requirements, such as the utility model patent with application number 201820035963.9, the utility model patent with application number 201420610256.X, the utility model patent with application number 201520126554.6, etc. The handle assembly 3 mentioned in the present invention is also a well-known technology in the field of locks, and it is not the focus of protection of the present invention, so it will not be described in detail. Those who are familiar with this technology can select a suitable handle assembly 3 in the prior art according to actual use requirements. The handle assembly 3 generally includes components such as door handles, handle mounting holes, and handle dials. It should be noted that the encryption circuit board 4 includes an encryption chip using algorithms such as AES-128 / 256, RSA-2048 or SM1 / SM4, which is used to realize data encryption, key storage and identity authentication, and supports dynamic key generation technology; it is provided with SPI, I 2The system features communication interfaces such as C and UART, and uses an encrypted bus protocol for data exchange. It also has a power management module with a low-power design, supports hardware / software power-down modes, and includes a voltage stabilization circuit and power isolation. It also includes a non-volatile storage unit for storing keys, logs, and other data, employing a tamper-proof design with block storage and a physical encryption identification layer. The encryption circuit board has an anti-tamper mechanism, equipped with a physical encryption identification and anomaly detection function. The anomaly detection function includes a voltage fluctuation sensor and cable impedance monitoring, which triggers a self-locking state or erases the key storage area when an anomaly is detected. Its PCB substrate is made of polyimide or metal, encapsulated with potting compound or a metal shield, and has a multi-layer board structure. It integrates sensors such as door magnets, vibration, and current surge monitoring, and employs a two-way authentication and replay attack protection security authentication protocol. Its primary function is to encrypt communication signals between the main control board 5 and external devices such as the fingerprint module and password keypad, while also detecting illegal wiring, such as exposed wires that could be attacked by external devices, thereby preventing unauthorized unlocking. The lock body 100 is also provided with a main control board 5, and the encryption circuit board 4 is electrically connected to the main control board 5 via a wire. In specific implementation, the main control board 5 integrates a microprocessor MCU, a storage unit, a power management module, etc., and is the control center of the smart lock. It is connected to the encryption circuit board 4, sensors, and input modules such as a fingerprint recognition module and a password input module. The function of the main control board 5 is to process the unlocking signal input by the user, for example, to determine whether the fingerprint authentication is passed, and then send an unlocking instruction to the motor clutch drive device 2, while receiving the status information fed back by the encryption circuit board 4, and can trigger an alarm when illegal wiring is detected. As the main control system of the smart lock, it coordinates the various components to work together, and will only perform the unlocking action after passing the security authentication of the encryption circuit board 4, thereby ensuring the legitimacy of the source of the instruction.

[0026] like Figure 1 、 Figure 2 As shown, the rigid reinforcement plate 1 includes a base plate 11 and side plates 12 surrounding the base plate 11. The base plate 11 and the side plates 12 together enclose a receiving space 200. The side plates 12 surround the base plate 11 and are connected to the base plate 11, forming the receiving space 200. This effectively prevents external damage such as drilling and chiseling on the front and sides of the lock body 100, protecting the internal components and forming a comprehensive protection system that enhances the protection of key internal components.

[0027] like Figure 1 、 Figure 2As shown, connecting ears 13 are connected to the upper and lower side plates 12, and mounting holes 131 are provided on the connecting ears 13. A connecting column 101 is provided in the lock body 100 to penetrate the corresponding mounting hole 131. In a specific implementation, the connecting column 101 is a hollow connecting column with an internal thread provided therein, and the mounting hole 131 is fixed to the connecting column 101 by screws. Through the cooperation of the connecting ears 13, the mounting hole 131 and the connecting column 101, the hard reinforcing plate 1 is firmly fixed in the lock body 100, so that the two form a whole. In this way, when subjected to external damage, the hard reinforcing plate 1 can better cooperate with the lock body 100 to prevent impact and jointly resist violent acts such as drilling and chiseling, further improving the anti-drilling and anti-chisel performance of the smart lock and the stability of the overall structure.

[0028] Specifically, the rigid reinforcing plate 1 is made of a metal alloy. Using a metal alloy provides the rigid reinforcing plate 1 with improved strength, hardness, and toughness, making it more resistant to external damage such as drilling. Preferably, the rigid reinforcing plate 1 is made of a titanium alloy. Titanium alloys offer low density, high strength, and excellent corrosion resistance, effectively resisting damage such as drilling and chiseling. They also make the smart lock lighter and easier to install and use.

[0029] Preferably, in this case, the hardness of the hard reinforcing plate (1) is greater than or equal to HRC65, the carburizing thickness is greater than or equal to 0.3mm, and the thickness of the hard reinforcing plate 1 is greater than 3mm. During the research and development process, the applicant has found through continuous experiments that when the smart lock is damaged by drilling or the like, the 3mm hard reinforcing plate 1 can provide greater resistance, slow down the penetration speed of the drilling tool, and disperse and absorb the impact force generated by the drilling, thereby protecting the key components inside from damage and ensuring the normal use of the smart lock. If the thickness is less than 3mm, it is easy to be drilled, and if the thickness is greater than 3mm, it is not convenient to install, takes up too much space in the smart lock, and has a high production material cost.

[0030] Specifically, the rigid reinforcing plate 1 is manufactured in one piece, and then the hardness of the rigid reinforcing plate 1 is improved by metal heat treatment, and then the rigid reinforcing plate 1 is carburized. There are no traces of splicing or welding on the whole, and it has high structural integrity. It should be noted that metal heat treatment to improve the hardness of metal and carburizing treatment are both well-known technologies in the field of metal processing, and those skilled in the art can refer to them. The one-piece molding production method of this case makes the structure of the rigid reinforcing plate 1 more solid, avoids the weak links that may exist in the splicing or welding parts, and improves its overall strength and anti-drilling ability. At the same time, the one-piece molding production method facilitates production and processing and saves production costs.

[0031] Furthermore, an anti-drill layer 102 is provided on the outer wall surface of the lock body 100, and the thickness of the anti-drill layer 102 is 0.5-2 mm. By providing the anti-drill layer 102 on the outer wall surface of the lock body 100 as the first line of defense for the smart lock, external drilling tools are blocked and direct damage to the lock body 100 is reduced. The anti-drill capability of the smart lock is further improved. The anti-drill layer 102 is set to a suitable thickness of 0.5-2 mm, which can ensure that the anti-drill layer 102 has sufficient strength and protection capability without making the smart lock too thick. The anti-drill layer 102 can be a separate anti-drill plate separately added to the outer wall surface of the lock body 100, or it can be a coating layer provided on the outer wall surface of the lock body 100 through a combination of process and one-piece molding.

[0032] Preferably, the anti-drilling layer 102 is made of diamond material. Diamond has extremely high hardness and wear resistance, which can greatly improve the anti-drilling ability of the smart lock.

[0033] As mentioned above, this case protects a drill-proof and chisel-proof smart lock, and all technical solutions that are the same or similar to this case should be deemed to fall within the scope of protection of this case.

Claims

1. A drill-proof and chisel-proof smart lock, comprising a lock body (100), characterized in that: A hard reinforcing plate (1) is provided in the lock body (100), and the hard reinforcing plate (1) encloses a receiving space (200). A motor clutch drive device (2), a handle assembly (3), and an encryption circuit board (4) are provided in the receiving space (200). A main control board (5) is also provided in the lock body (100), and the encryption circuit board (4) is electrically connected to the main control board (5) via a wire.

2. The anti-drilling and anti-chisel smart lock according to claim 1, characterized in that: The rigid reinforcing plate (1) comprises a bottom plate (11) and side plates (12) arranged around the bottom plate (11), and the bottom plate (11) and the side plates (12) together enclose a receiving space (200).

3. The anti-drilling and anti-chisel smart lock according to claim 2, characterized in that: Connecting ears (13) are connected to the upper and lower side plates (12), and mounting holes (131) are provided on the connecting ears (13). Connecting columns (101) that penetrate into the corresponding mounting holes (131) are provided in the lock body (100).

4. The drill-proof and chisel-proof smart lock according to claim 1, characterized in that: The hard reinforcing plate (1) is made of a metal alloy material.

5. The drill-proof and chisel-proof smart lock according to claim 4, characterized in that: The hard reinforcing plate (1) is made of titanium alloy material.

6. The drill-proof and chisel-proof smart lock according to claim 1, characterized in that: The hardness of the hard reinforcing plate (1) is greater than or equal to HRC65, and the carburized thickness is greater than or equal to 0.3 mm.

7. The drill-proof and chisel-proof smart lock according to claim 1, characterized in that: The hard reinforcing plate (1) is manufactured by integral molding.

8. The drill-proof and chisel-proof smart lock according to any one of claims 1 to 7, characterized in that: An anti-drilling layer (102) is provided on the outer wall surface of the lock body (100), and the thickness of the anti-drilling layer (102) is 0.5-2 mm.

9. The drill-proof and chisel-proof smart lock according to claim 8, characterized in that: The anti-drilling layer (102) is made of diamond material.

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