A theftproof intelligent lock shell
By introducing a protective outer and inner layer design into the smart lock casing, and utilizing a combination of stainless steel reinforcing ribs and nylon wire-wound cutting discs, the problem of existing smart lock casings being easily broken and dismantled has been solved, achieving higher protection and emergency door opening functions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN BLYC TECH DEV CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-06-26
AI Technical Summary
Existing smart lock shells have limited protection against demolition tools such as angle grinders, electric drills, and pry bars, making them easy to cut or pry open quickly, resulting in the exposure of the internal lock body and electronic components, thus compromising security.
It adopts a protective outer layer and a protective inner layer design. The outer layer is made of stainless steel and reinforced with ribs, while the inner layer is made of nylon wire wrapped around the cutting blade to prevent cutting. The outer and inner layers are connected by the nylon layer and the reinforcing ribs to form a double layer of protection, which enhances the impact resistance and cutting ability. The sub-shell works with the positioning pin to realize emergency opening.
It slows down the dismantling time, improves the overall strength and impact resistance of the smart lock shell, ensures that the door can still be opened safely in emergency situations, and takes into account daily protection and ease of operation.
Smart Images

Figure CN224413342U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of smart lock housing technology, specifically a housing for an anti-theft smart lock. Background Technology
[0002] Smart locks are widely used in homes and shopping malls due to their convenience and intelligence. Currently, most smart lock shells on the market are made of a single metal material or a simple metal and plastic composite structure, formed by bolt fixing or welding. Some products even use thin metal sheets or ordinary engineering plastics to control costs. However, these shells have limited protection against demolition tools such as angle grinders, electric drills, and pry bars. They are easily cut, pried, and deformed, resulting in the exposure of the internal lock body and electronic components, and insufficient security.
[0003] Therefore, a new type of anti-theft smart lock shell is proposed to solve the problems mentioned above. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides an outer shell for an anti-theft smart lock. By using a protective outer layer and reinforcing ribs, the overall strength and impact resistance of the shell are improved, increasing its ability to resist prying by tools such as crowbars. At the same time, the protective inner layer increases its ability to resist cutting tools such as angle grinders. The nylon wire wrapped around the cutting blade in the protective inner layer hinders cutting, making up for the lack of a structure to hinder high-speed cutting tools in a single metal shell, delaying the time of dismantling, and solving the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a protective outer layer, a protective inner layer, and a sub-shell. The two opposite sides of the outer surface of the protective inner layer are fixedly bonded to the inner surface of the protective inner layer. The protective inner layer includes an outer covering layer and a nylon layer. The nylon layer is composed of warp and weft layers. The warp layer is formed by winding nylon filaments parallel to the inner bottom surface of the protective outer layer, and the weft layer is formed by laying nylon filaments perpendicular to the warp layer. The sub-shell is rotatably connected to the end of the protective outer layer away from the protective inner layer.
[0006] Preferably, a plurality of reinforcing ribs are fixedly connected at the connection between the inner side surface and the inner bottom surface of the protective outer layer, and a plurality of fixing grooves adapted to the reinforcing ribs are opened on the inner bottom surface of the protective inner layer.
[0007] Preferably, a connecting plate is fixedly connected to the end of the outer protective layer away from the inner protective layer, and a rotating shaft is fixedly connected to the end of the sub-shell near the connecting plate, the rotating shaft passing through the connecting plate.
[0008] Preferably, the connecting plate has a second positioning hole on its surface, and the sub-shell has a first positioning hole on its surface away from the connecting plate. A positioning pin is slidably connected in the first positioning hole, and the other end of the positioning pin is inserted into the second positioning hole.
[0009] Preferably, the inner surface of the second positioning hole is threaded, and the positioning pin is screwed into the second positioning hole through the thread. The end of the positioning pin away from the second positioning hole is provided with an insertion groove, which is in the shape of a straight line.
[0010] Preferably, the bottom surface of the protective outer layer has multiple threaded connection holes, and a silicone pad is fixedly connected to the bottom surface of the outer side of the protective outer layer.
[0011] Preferably, the two opposite sides of the inner side of the protective outer layer are fixedly connected to a cover plate by a snap fastener, and the end of the cover plate away from the sub-shell has a raised opening.
[0012] Compared with the prior art, this utility model provides a shell for an anti-theft smart lock, which has the following beneficial effects:
[0013] 1. By using a protective outer layer and reinforcing ribs, the overall strength and impact resistance of the outer shell are improved, increasing its ability to resist prying by tools such as crowbars. At the same time, the protective inner layer increases its ability to resist cutting tools such as angle grinders. The nylon wire wrapped around the cutting disc in the protective inner layer hinders cutting, making up for the lack of a structure that hinders high-speed cutting tools in a single metal shell, thus delaying the demolition time.
[0014] 2. The cooperation between the secondary housing and the positioning pin enables the emergency door opening function, and can only drive the tongue to retract, ensuring safety. The design of the cover plate and the upturned opening makes it easy to expose the lock cylinder, taking into account both emergency operation and daily protection. Attached Figure Description
[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0016] Figure 1 An exploded structural diagram of the outer shell for the anti-theft smart lock of this utility model;
[0017] Figure 2 An isometric structural schematic diagram of the housing for the anti-theft smart lock of this utility model;
[0018] Figure 3 A schematic diagram of the protective outer layer structure provided for the outer shell of the anti-theft smart lock of this utility model;
[0019] Figure 4A schematic diagram of the protective inner layer structure provided for the outer shell of the anti-theft smart lock of this utility model;
[0020] Figure 5 A schematic diagram of the cross-sectional structure of the protective inner layer provided for the outer shell of the anti-theft smart lock of this utility model.
[0021] In the diagram: 1. Outer protective layer; 2. Inner protective layer; 3. Subshell; 4. Warp layer; 5. Weft layer; 6. Reinforcing rib; 7. Fixing groove; 8. Connecting plate; 9. Rotating shaft; 10. Positioning hole No. 2; 11. Positioning hole No. 1; 12. Positioning pin; 13. Insertion groove; 14. Threaded connection hole; 15. Silicone pad; 16. Cover plate; 17. U-shaped opening; 201. Outer covering layer; 202. Nylon layer. Detailed Implementation
[0022] 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. Example
[0023] Please see Figure 1 - Figure 5 This embodiment provides an anti-theft smart lock housing, comprising an outer protective layer 1, an inner protective layer 2, and a sub-shell 3. The two opposite sides of the outer surface of the inner protective layer 2 are fixedly bonded to its inner surface. The inner protective layer 2 includes an outer covering layer 201 and a nylon layer 202. The nylon layer 202 is composed of warp layers 4 and weft layers 5. The warp layers 4 are formed by winding nylon filaments parallel to the inner bottom surface of the outer protective layer 1, and the weft layers 5 are formed by laying nylon filaments perpendicular to the warp layers 4. The sub-shell 3 is attached to the outer protective layer 1 at the end furthest from the inner protective layer 2. The structure features a dynamic connection, with the outer protective layer 1 and reinforcing rib 6 made of stainless steel to enhance overall strength and impact resistance. When pried by tools such as crowbars, it can effectively resist deformation. The inner protective layer 2 has a plastic covering layer 201 that protects and fixes the inner nylon layer 202. The nylon layer 202 is made of nylon filaments. When the outer shell is forcibly broken with an angle grinder, the nylon filaments will wrap around the cutting blade of the angle grinder, thus hindering the cutting action and slowing down the breaking process. Together with the outer protective layer 1, it forms a double layer of protection, improving the anti-cutting effect.
[0024] Multiple reinforcing ribs 6 are fixedly connected at the connection between the inner side and the inner bottom surface of the outer protective layer 1. Multiple fixing grooves 7 that are adapted to the reinforcing ribs 6 are opened on the inner bottom surface of the inner protective layer 2. The reinforcing ribs 6 are embedded in the fixing grooves 7, making the connection between the outer protective layer 1 and the inner protective layer 2 more secure, preventing the two from separating when subjected to violent impact, further enhancing the overall structural stability of the shell, and improving the impact resistance and pry resistance.
[0025] A connecting plate 8 is fixedly connected to the end of the outer protective layer 1 away from the inner protective layer 2. A rotating shaft 9 is fixedly connected to the end of the sub-shell 3 near the connecting plate 8. The rotating shaft 9 passes through the connecting plate 8. A second positioning hole 10 is provided on the surface of the connecting plate 8. A first positioning hole 11 is provided on the surface of the sub-shell 3 away from the connecting plate 8. A positioning pin 12 is slidably connected in the first positioning hole 11. The other end of the positioning pin 12 is inserted into the second positioning hole 10. A thread is provided on the inner surface of the second positioning hole 10. The positioning pin 12 is connected to the second positioning hole 10 through the thread. The hole 10 is threaded and connected. The end of the positioning pin 12 away from the second positioning hole 10 has an insertion groove 13. The insertion groove 13 is in the shape of a straight line. The positioning pin 12 positions the secondary housing 3. The secondary housing 3 is connected to the handle of the lock body and is used to drive the tongue to retract. It can only drive the tongue to retract and cannot drive the main lock tongue. It is suitable for opening the door when there is no power or closing the door by accident. When in use, the positioning pin 12 is rotated by a tool through the insertion groove 13 to disengage the positioning pin 12 from the second positioning hole 10. Then the secondary housing 3 can be rotated to open the door in an emergency.
[0026] The bottom surface of the protective outer layer 1 has multiple threaded connection holes 14 for fixing the outer shell to the door body to ensure that the outer shell is installed firmly. A silicone pad 15 is fixedly connected to the bottom surface of the outer side of the protective outer layer 1. The silicone pad 15 can increase the friction between the outer shell and the door body, further improve the stability after installation, and also play a certain buffering role to reduce the impact of vibration on the shell when opening and closing the door.
[0027] Cover plates 16 are fixedly connected to the two opposite sides of the inner protective shell through a bayonet. A slit 17 is opened at the end of the cover plate 16 away from the sub-shell 3. The cover plate 16 is connected by a bayonet, which is convenient for installation and disassembly. It can protect the internal structure of the outer protective layer 1 and prevent dust, moisture and other substances from entering and affecting the internal components. The design of the slit 17 makes it easy for the user to pry open the cover plate 16 from the bayonet. After opening the cover plate 16, the through hole on the surface of the inner protective shell is used to expose the lock cylinder so that the door can be opened through the lock cylinder when needed.
[0028] The working principle of the above embodiment is as follows: When encountering violent demolition, the stainless steel protective outer layer 1 and reinforcing rib 6 first resist the prying of tools such as pry bars to prevent the outer shell from deforming. If it encounters angle grinder cutting, the protective outer layer 1 will first block it. After the cutting breaks through the protective outer layer 1, the nylon wire of the protective inner layer 2 will wrap around the cutting blade to prevent the cutting from continuing. The sub-shell 3 is fixed to the connecting plate 8 by the positioning pin 12 to ensure stability under normal conditions. In an emergency, rotating the positioning pin 12 can open the sub-shell 3 and drive the tongue to retract. The cover plate 16 is fixed to protect the inside by the bayonet. When the lock cylinder needs to be used, the cover plate 16 can be opened through the pry hole 17 to expose the lock cylinder. In use, the outer shell is fixed to the door body through the threaded connection hole 14. The silicone pad 15 enhances stability. It is unlocked in daily use through intelligent means. In an emergency, if there is no power or the door is closed by accident, the positioning pin 12 can be rotated to open the sub-shell 3, or the cover plate 16 can be pried open to use the lock cylinder to open the door.
[0029] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. Therefore, this embodiment will not elaborate on their specific structural composition and working principle.
[0030] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to".
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A housing for an anti-theft smart lock, characterized in that: The protective outer layer (1), the protective inner layer (2), and the sub-shell (3) are included. The two opposite sides of the outer side of the protective inner layer (2) are fixedly bonded to the inner side of the protective inner layer (2). The protective inner layer (2) includes an outer covering layer (201) and a nylon layer (202). The nylon layer (202) is made of a warp layer (4) and a weft layer (5). The warp layer (4) is made of nylon filaments wound parallel to the inner bottom surface of the protective outer layer (1). The weft layer (5) is made of nylon filaments laid perpendicular to the warp layer (4). The sub-shell (3) is rotatably connected to the end of the protective outer layer (1) away from the protective inner layer (2).
2. The housing for an anti-theft smart lock according to claim 1, characterized in that: The outer protective layer (1) has multiple reinforcing ribs (6) fixedly connected at the connection between the inner side and the inner bottom surface, and the inner bottom surface of the inner protective layer (2) has multiple fixing grooves (7) adapted to the reinforcing ribs (6).
3. The housing for an anti-theft smart lock according to claim 1, characterized in that: The outer protective layer (1) is fixedly connected to a connecting plate (8) at one end away from the inner protective layer (2), and the sub-shell (3) is fixedly connected to a rotating shaft (9) at one end near the connecting plate (8), with the rotating shaft (9) penetrating the connecting plate (8).
4. The housing for an anti-theft smart lock according to claim 3, characterized in that: The connecting plate (8) has a second positioning hole (10) on its surface. The sub-shell (3) has a first positioning hole (11) on its side away from the connecting plate (8). A positioning pin (12) is slidably connected in the first positioning hole (11). The other end of the positioning pin (12) is inserted into the second positioning hole (10).
5. The housing for an anti-theft smart lock according to claim 4, characterized in that: The inner surface of the second positioning hole (10) is threaded, and the positioning pin (12) is threadedly connected to the second positioning hole (10) through the thread. The end of the positioning pin (12) away from the second positioning hole (10) is provided with an insertion groove (13), which is in the shape of a straight line.
6. The housing for an anti-theft smart lock according to claim 1, characterized in that: The bottom surface of the protective outer layer (1) is provided with multiple threaded connection holes (14), and a silicone pad (15) is fixedly connected to the bottom surface of the outer side of the protective outer layer (1).
7. The housing for an anti-theft smart lock according to claim 1, characterized in that: The protective outer layer (1) has a cover plate (16) fixedly connected to the two opposite sides inside by a snap fastener. The cover plate (16) has a slit (17) at one end away from the sub-shell (3).