Prying-resistant and drilling-resistant mechanical lock cylinder
By introducing rotary anti-drilling assembly and buffer support mechanism into the mechanical lock core, the problem of insufficient protection of the traditional anti-drilling piece for small-diameter drill bits is solved, and comprehensive protection of the lock core is achieved, which enhances the safety and durability of the lock core.
Patent Information
- Application Number
- CN202521288722.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-23
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2035-06-23
AI Technical Summary
The traditional anti-drilling piece has a fixed size. When encountering a drill bit with a smaller diameter, it is difficult to form effective contact and friction with the drill bit, resulting in the inability to drive the anti-drilling piece to rotate simultaneously. The small-diameter drill bit can easily break through the anti-drilling piece protection and destroy the internal structure of the lock core, posing safety hazards.
A mechanical lock core including a rotating anti-drilling assembly is designed. The rotating anti-drilling assembly includes a protective outer ring, an anti-drilling seat, a hexagonal pyramid groove, a connection block, a buffer support mechanism and an anti-drilling steel column. The hexagonal pyramid groove is adapted to a small drill bit of different diameters. The bump increases the biting force with the outer wall of the drill rod, so that the drill bit drives the anti-drilling seat to rotate simultaneously, the telescopic spring absorbs impact force, the oil-absorbing layer reduces friction, the anti-drilling steel column guides the drill bit to offset, and protects the internal structure of the lock core.
It effectively improves the protection capability of small diameter drill bits, ensures the safety and reliability of the lock core, prevents the drill bit from damaging the key structure of the lock core in depth, and extends the service life of the lock core.
Smart Images
Figure CN223190213U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical lock cores, in particular to a mechanical lock core which is pry-proof and drill-proof. Background Art
[0002] A mechanical lock cylinder that is tamper-resistant and drill-resistant is a lock cylinder that is specially designed to resist violent vandalism. As a key component for ensuring safety, the mechanical lock cylinder's drill-resistant performance is crucial. It is usually made of high-strength materials and has a complex and sophisticated internal structure.
[0003] Existing mechanical lock cylinders resist violent damage by installing anti-drilling plates and thickened shells. The anti-drilling plates, as key anti-drilling components, can increase the difficulty of drill attacks to a certain extent, but they have obvious technical defects.
[0004] However, due to the fixed size of traditional anti-drill plates, when encountering a drill bit with a smaller diameter, it is difficult to form effective contact and friction with the drill bit, resulting in the inability to drive the anti-drill plates to rotate synchronously. In this case, the small diameter drill bit can easily break through the protection of the anti-drill plate and damage the internal structure of the lock core, causing the lock core to lose its anti-drill function and then be illegally opened, posing a safety hazard. Therefore, to address the above problems, a mechanical lock core with anti-pry and anti-drilling properties is proposed. Utility Model Content
[0005] The purpose of the utility model is to provide a mechanical lock core that is anti-pry and anti-drilling, so as to solve the problem that due to the fixed size of the traditional anti-drill plate, when encountering a drill bit with a smaller diameter, it is difficult to form effective contact and friction with the drill bit, resulting in the inability to drive the anti-drill plate to rotate synchronously. In this case, the small diameter drill bit can easily break through the protection of the anti-drill plate and damage the internal structure of the lock core, causing the lock core to lose its anti-drilling function and then be illegally opened, posing a safety hazard.
[0006] To achieve the above objectives, the present invention provides the following technical solutions:
[0007] A mechanical lock core that is anti-pry and anti-drill, comprises a lock core body, wherein the bottoms of both ends of the lock core body are fixedly connected to protective plates, and both ends of the inner side of the lock core body are installed with rotating anti-drill components; the rotating anti-drill component comprises a protective outer ring, which is rotatably arranged on the inner side of the lock core body, and the rear end of the protective outer ring is fixedly connected to an anti-drill seat, the inner side of the anti-drill seat is provided with a hexagonal pyramid groove, and the corner area inside the hexagonal pyramid groove is fixedly connected to a connecting block, the rear end of the anti-drill seat is fixedly connected to a connecting block, and the rear end of the connecting block is installed with a buffer support mechanism, and an anti-drill steel column is inserted into the inner side of the buffer support mechanism; the protective outer ring is located behind the protective plate.
[0008] As a further optimization of the present invention, the buffer support mechanism includes a seat body, which is fixedly arranged on the inner side of the lock core body, and a rotating seat is rotatably connected to the center of the rear end of the seat body, and the front end of the rotating seat is fixedly connected to a telescopic spring, and the telescopic spring is embedded in the inner side of the seat body, and the front end of the telescopic spring fits with the rear end of the connecting block. The front end surface of the seat body is fixedly connected with reinforcing ribs in a circular array, and the inner side of the reinforcing ribs fits with the outer side of the telescopic spring. The front end of the reinforcing ribs is fixedly connected with a connecting sleeve, and the outer sleeve of the rotating seat is provided with an oil absorption layer.
[0009] As a further optimized content of the present invention, the rear end of the anti-drill seat is located on the inner side of the connecting sleeve, the anti-drill seat and the connecting sleeve are magnetically attracted to each other, and the anti-drill seat and the connecting sleeve are located on the same central axis.
[0010] As a further optimization of the present invention, the shape of the reinforcing rib is a triangular prism, there are multiple reinforcing ribs, and there are gaps between the multiple reinforcing ribs.
[0011] As a further optimization of this utility model, the anti-drill steel column is inserted in the middle of the inner side of the seat body, the bottom end of the anti-drill steel column extends to the bottom end of the lock core body, and the position of the anti-drill steel column corresponds to the position of the rotating seat.
[0012] As a further optimization of the present invention, the outer side of the connecting block is an arc-shaped structure, the front end of the telescopic spring extends to the middle of the inner side of the connecting block, the connecting block and the anti-drill seat are located on the same central axis, and the connecting block is located in front of the oil absorption layer.
[0013] As a further optimization of the present invention, the protective outer ring and the protective sheet are fitted together, a protrusion is fixedly connected to the inner side of the protective outer ring, the protrusion is located in front of the connecting block, and the protrusion corresponds to the connecting block one by one.
[0014] Compared with the prior art, the beneficial effects of the present invention are:
[0015] The anti-drilling steel column guides the small drill bit to deviate and prevents it from deeply damaging the key structure inside the lock core. Compared with traditional anti-drilling sheets, the utility model can also form effective protection for small diameter drill bits, significantly enhance the anti-drilling function of the lock core, and ensure the safety and reliability of the lock core. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 This is one of the schematic cross-sectional structures of the entire utility model;
[0018] Figure 3 This is the second schematic cross-sectional structure diagram of the entire utility model;
[0019] Figure 4 This is a schematic diagram of the structure of the protective outer ring of the utility model;
[0020] Figure 5 This is a schematic structural diagram of the anti-drilling seat of the utility model;
[0021] Figure 6 It is a schematic cross-sectional structure diagram of the buffer support mechanism of the present utility model.
[0022] In the figure: 1. Lock cylinder body; 2. Protective plate; 3. Rotating anti-drilling assembly; 31. Protective outer ring; 32. Anti-drilling seat; 33. Hexagonal pyramid groove; 34. Connecting block; 35. Connecting block; 36. Buffer support mechanism;
[0023] 361. seat body; 362. rotating seat; 363. telescopic spring; 364. reinforcing rib; 365. connecting sleeve; 366. oil-absorbing layer;
[0024] 37. Anti-drilling steel column; 38. Bump. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.
[0027] See also Figures 1-6 , the utility model provides a technical solution:
[0028] A mechanical lock core that is anti-pry and anti-drill, includes a lock core body 1, with protective plates 2 fixedly connected to the bottoms of both ends of the lock core body 1, and rotating anti-drill components 3 installed at both ends of the inner side of the lock core body 1; the rotating anti-drill component 3 includes a protective outer ring 31, which is rotatably arranged on the inner side of the lock core body 1, and the rear end of the protective outer ring 31 is fixedly connected to an anti-drill seat 32, the inner side of the anti-drill seat 32 is provided with a hexagonal pyramid groove 33, the corner area inside the hexagonal pyramid groove 33 is fixedly connected to a connecting block 34, the rear end of the anti-drill seat 32 is fixedly connected to a connecting block 35, the rear end of the connecting block 35 is installed with a buffer support mechanism 36, and the inner side of the buffer support mechanism 36 is inserted with an anti-drill steel column 37; the protective outer ring 31 is located behind the protective plate 2.
[0029] As a further implementation of this solution, the buffer support mechanism 36 includes a seat body 361, which is fixedly arranged on the inner side of the lock core body 1, and a rotating seat 362 is rotatably connected to the center of the rear end of the seat body 361. The front end of the rotating seat 362 is fixedly connected to a telescopic spring 363 that plays a buffering role, which can absorb the impact force generated by the rotation and ensure smooth rotation. The telescopic spring 363 is embedded in the inner side of the seat body 361, and the front end of the telescopic spring 363 fits with the rear end of the connecting block 35. The front end surface of the seat body 361 is fixedly connected with a reinforcing rib 364 in a circular array. The inner side of the reinforcing rib 364 fits with the outer side of the telescopic spring 363, and the inner side of the reinforcing rib 364 is the telescopic spring 363. 63 provides support to prevent the telescopic spring 363 from being misplaced. The front end of the reinforcing rib 364 is fixedly connected to the connecting sleeve 365. The outer sleeve of the rotating seat 362 is provided with an oil-absorbing layer 366. When the connecting block 35 applies pressure, the oil-absorbing layer 366 squeezes out lubricating oil and fills it into the contact part of the anti-drill seat 32, reducing friction resistance, reducing component wear, and extending the service life of the lock core. The rear end of the anti-drill seat 32 is located on the inner side of the connecting sleeve 365. The anti-drill seat 32 and the connecting sleeve 365 are magnetically attracted. The anti-drill seat 32 and the connecting sleeve 365 are located on the same central axis. The anti-drill seat 32 and the connecting sleeve 365 are magnetically attracted and coaxially arranged, ensuring the precise alignment and stable connection between the two during the rotation process to prevent deviation.
[0030] As a further implementation of this solution, an anti-drilling steel column 37 is inserted into the middle of the inner side of the seat body 361. The bottom end of the anti-drilling steel column 37 extends to the bottom end of the lock core body 1. The position of the anti-drilling steel column 37 corresponds to the position of the rotating seat 362. In this way, when the drill bit attempts to penetrate into the interior of the lock core body 1, the inclined surface can, with its unique geometric shape, guide the forward direction of the small drill bit to both sides, forcing the small drill bit to deviate from the original drilling trajectory and unable to reach the key structure inside the lock core;
[0031] As a further implementation of this solution, the outer side of the connecting block 35 is in an arc-shaped structure, and the front end of the telescopic spring 363 extends to the middle of the inner side of the connecting block 35. The connecting block 35 and the anti-drilling seat 32 are located on the same central axis, ensuring the high efficiency and stability of power transmission. The connecting block 35 is located in front of the oil-absorbing layer 366 and can promptly utilize the lubricating oil squeezed out by the oil-absorbing layer 366 to reduce the friction between itself and the surrounding components and ensure smooth rotation.
[0032] As a further implementation of this solution, the protective outer ring 31 and the protective sheet 2 fit together, and a protrusion 38 is fixedly connected to the inner side of the protective outer ring 31. The protrusion 38 is located in front of the connecting block 34, and the protrusion 38 corresponds one-to-one with the connecting block 34. The setting of the protrusion 38 facilitates increasing the bite force with the outer wall of the drill rod. When the drill bit is inserted, the bite force drives the anti-drill seat 32 to rotate synchronously, thereby dispersing the force of the drill bit, avoiding the drill bit directly acting on the fragile parts of the lock core, and effectively protecting the lock core from being drilled through.
[0033] Working process: First, the drill bit contacts the protective sheets 2 at the bottom of both ends of the lock core body 1. The protective sheets 2 are made of high-strength alloy material, which can effectively resist the impact of the drill bit and significantly delay its drilling process. If the protective sheet 2 is drilled through, the drill bit will be inserted into the rotating anti-drilling component 3. The protective outer ring 31 is rotatably set on the inner side of the lock core body 1, and the rear thereof is fixedly connected to the anti-drilling seat 32. The hexagonal pyramid groove 33 of the anti-drilling seat 32 is designed with an inclined surface, which is convenient for adapting to small drill bits of different diameters. The connecting block 34 and the protrusion 38 on the outer wall of the drill rod form a double bite structure. When the small drill bit is inserted, the bite force drives the anti-drilling seat 32 to rotate synchronously, thereby dispersing the force of the drill bit, avoiding the drill bit directly acting on the vulnerable parts of the lock core, and effectively protecting the lock core from being drilled through. At the same time, the connecting block 35 fixedly connected to the rear end of the anti-drilling seat 32 is stretched The compression spring 363 drives the rotating seat 362 in the seat body 361 to rotate synchronously. During this process, the expansion spring 363 plays a buffering role, which can absorb the impact force generated by the rotation to ensure smooth rotation. The oil-absorbing layer 366 in the seat body 361 will squeeze out lubricating oil to fill the contact part of the anti-drill seat 32 when the connecting block 35 applies pressure, thereby reducing friction resistance. At the same time, the reinforcing rib 364 enhances the structural strength of the buffer support mechanism 36, ensures the stability of the anti-drill seat 32 and the connecting block 35 during rotation, and prevents structural deformation or damage. The anti-drill steel column 37 inserted on the inner side of the seat body 361 has a triangular prism-shaped inclined surface at the front end, which can guide the small drill bit to deviate to both sides, preventing the small drill bit from continuing to penetrate into the key structure inside the lock core body 1, thereby effectively realizing the anti-drill function and protecting the safety of the lock core.
[0034] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A mechanical lock core that is tamper-proof and drill-proof, comprising a lock core body (1), characterized in that: The bottoms of both ends of the lock core body (1) are fixedly connected with protective plates (2), and both ends of the inner side of the lock core body (1) are installed with rotating anti-drilling components (3); The rotary anti-drilling assembly (3) comprises a protective outer ring (31), the protective outer ring (31) is rotatably arranged on the inner side of the lock core body (1), the rear end of the protective outer ring (31) is fixedly connected to an anti-drilling seat (32), the inner side of the anti-drilling seat (32) is provided with a hexagonal pyramid groove (33), the inner corner area of the hexagonal pyramid groove (33) is fixedly connected to a connecting block (34), the rear end of the anti-drilling seat (32) is fixedly connected to a connecting block (35), the rear end of the connecting block (35) is installed with a buffer support mechanism (36), and the inner side of the buffer support mechanism (36) is provided with an anti-drilling steel column (37); The protective outer ring (31) is located behind the protective sheet (2).
2. The anti-pry and anti-drill mechanical lock cylinder according to claim 1, characterized in that: The buffer support mechanism (36) includes a seat body (361), the seat body (361) is fixedly arranged on the inner side of the lock core body (1), a rotating seat (362) is rotatably connected to the center of the rear end of the seat body (361), a telescopic spring (363) is fixedly connected to the front end of the rotating seat (362), the telescopic spring (363) is embedded in the inner side of the seat body (361), the front end of the telescopic spring (363) is in contact with the rear end of the connecting block (35), the front end surface of the seat body (361) is fixedly connected to a reinforcing rib (364) in a circular array, the inner side of the reinforcing rib (364) is in contact with the outer side of the telescopic spring (363), the front end of the reinforcing rib (364) is fixedly connected to a connecting sleeve (365), and the outer side of the rotating seat (362) is provided with an oil-absorbing layer (366).
3. The anti-pry and anti-drill mechanical lock cylinder according to claim 1, characterized in that: The rear end of the anti-drill seat (32) is located inside the connecting sleeve (365), the anti-drill seat (32) and the connecting sleeve (365) are magnetically attracted to each other, and the anti-drill seat (32) and the connecting sleeve (365) are located on the same central axis.
4. The anti-pry and anti-drill mechanical lock cylinder according to claim 2, characterized in that: The reinforcing rib (364) is in the shape of a triangular prism, and a plurality of the reinforcing ribs (364) are provided, with gaps existing between the plurality of the reinforcing ribs (364).
5. The anti-pry and anti-drill mechanical lock cylinder according to claim 1, characterized in that: The anti-drilling steel column (37) is inserted into the middle of the inner side of the seat body (361), and the bottom end of the anti-drilling steel column (37) extends to the bottom end of the lock core body (1). The position of the anti-drilling steel column (37) corresponds to the position of the rotating seat (362).
6. The anti-pry and anti-drill mechanical lock cylinder according to claim 2, characterized in that: The outer side of the connecting block (35) is in an arc-shaped structure, the front end of the telescopic spring (363) extends to the middle of the inner side of the connecting block (35), the connecting block (35) and the anti-drilling seat (32) are located on the same central axis, and the connecting block (35) is located in front of the oil absorption layer (366).
7. The anti-pry and anti-drill mechanical lock cylinder according to claim 1, characterized in that: The protective outer ring (31) and the protective sheet (2) are fitted together, and a protrusion (38) is fixedly connected to the inner side of the protective outer ring (31). The protrusion (38) is located in front of the connecting block (34), and the protrusion (38) corresponds to the connecting block (34) one by one.