Technical opening prevention lock cylinder of mechanical lock
By introducing a push flange and an avoidance annular groove structure into the mechanical lock, the problem of poor anti-theft performance of traditional mechanical locks is solved, and a lock design with high anti-theft performance is realized with a simple process.
Patent Information
- Application Number
- CN202520425944.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Traditional mechanical pin tumbler locks have poor anti-opening performance and complex processes that increase costs, making them unsuitable for widespread adoption.
Design a mechanical lock cylinder to prevent technical unlocking. By setting a push flange on the key, a limiting flange is pushed into an avoidance ring groove, so that the rotation of the lock cylinder depends on the position of the limiting flange. Combined with traditional pin tumbler components, this increases the difficulty of unlocking.
It maintains the simple manufacturing process of traditional pin tumbler locks, improves anti-theft performance, prevents technical picking, and enhances lock security.
Smart Images
Figure CN223854007U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of lockset, especially relates to a mechanical lock's anti-technical opening lock cylinder. BACKGROUND
[0002] In the lockset aspect, mechanical pin tumbler lock has been the most widely used product. The traditional pin tumbler lock is simple in structure, and the anti-theft performance, especially the performance of anti-technical opening, is very poor. In order to improve the anti-theft performance of the lockset and increase the difficulty of technical opening, people have designed various anti-theft pin tumbler lock heads. But these mechanical locks have design defects to varying degrees, some only increase the difficulty of technical opening to a certain extent and cannot achieve the purpose of anti-technical opening; although some can achieve the purpose of anti-technical opening, the complex manufacturing process increases the manufacturing cost, so they cannot be widely used. CONTENT OF THE UTILITY MODEL
[0003] The utility model aims at at least in a certain extent solve one of the problems existing in prior art related, and for this purpose, the utility model provides a mechanical lock's anti-technical opening lock cylinder.
[0004] In order to achieve the above object, the utility model provides the following technical scheme:
[0005] A mechanical lock's anti-technical opening lock cylinder, including lock shell, lock cylinder, pin tumbler assembly and lock key, the lock shell front end is provided with the lock cylinder installation hole for the lock cylinder rotation installation, the pin tumbler assembly is located in the lower end of the lock cylinder installation hole, the front end of the lock cylinder is provided with the lock key insertion of lock key insertion, the upper end of the lock cylinder is provided with the first communication groove that communicates with the lock key insertion, the second communication groove that communicates with the lock cylinder installation hole is arranged in the upper end of the lock shell, the elastic sliding assembly is slid in the second communication groove, the lower end of the elastic sliding assembly is provided with the limiting flange, the limiting flange extends to the first communication groove, the circumferential outer wall of the lock cylinder is provided with the avoidance circular ring groove that communicates with the first communication groove, the upper end of the lock key is provided with the push flange, when the lock key is inserted into the lock key insertion, the push flange can be inwards and the limiting flange is jacked, makes its limiting flange move to the side of avoidance circular ring groove, so that the lock cylinder rotates, and the limiting flange enters the avoidance circular ring groove.
[0006] In some embodiments, the elastic sliding assembly includes a sliding seat that slides in the second communication groove and a spring that is disposed at the rear end of the sliding seat, and the limiting flange is disposed on the sliding seat.
[0007] In some embodiments, a dial mounting slot for mounting a dial is further arranged on the lock shell, the rear end of the second communication groove is communicated with the dial mounting slot, a sliding groove is arranged on the left and right sides of the second communication groove, a sliding member is arranged on the left and right sides of the sliding seat and slides in the sliding groove, and a plug is further arranged at the rear end of the second communication groove.
[0008] In some embodiments, a circular groove is arranged at the rear end of the sliding seat, and one end of the spring is arranged in the circular groove.
[0009] In some embodiments, a first bevel is arranged at the opening corner where the avoidance circular ring groove is communicated with the first communication groove.
[0010] In some embodiments, a second bevel is arranged at the corner of the limiting flange.
[0011] In some embodiments, the pushing flange is integrally formed with the lock pick.
[0012] Compared with the prior art, the utility model has the beneficial effects that: when the lock is opened, the lock pick is inserted into the lock pick port of the lock cylinder, the pushing flange at the upper end of the lock pick pushes the limiting flange to move at the same time, when the lock pick is inserted, the lower end of the lock pick is in the unlocking state, and the limiting flange moves to one side of the avoidance circular ring groove, so that the lock pick can drive the lock cylinder to rotate, the unlocking purpose is achieved, and the rotation of the lock cylinder depends on not only the traditional pin assembly but also the limiting flange, as long as the limiting flange is at one side of the avoidance circular ring groove, the lock cylinder can rotate, and the traditional pin lock manufacturing process is simple, technical opening is prevented, and the anti-theft performance of the lock is greatly improved. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;
[0014] Figure 2 It is a half-cut structure schematic diagram of the utility model;
[0015] Figure 3 It is a local cut structure schematic diagram of the utility model;
[0016] Figure 4 It is an exploded structure schematic diagram of the utility model;
[0017] Figure 5 It is a local exploded schematic diagram of the utility model. DETAILED DESCRIPTION
[0018] The following detailed description provides various different embodiments or examples for implementing the present application. Of course, these are merely examples and are not intended to be limiting. Also, like reference numerals are used to designate like parts throughout the various examples and embodiments. These are used for a simpler and clearer description of the present application and do not represent a particular relationship between the various examples and / or structures being discussed.
[0019] As shown in Figures 1-5 A mechanical lock anti-technical opening lock cylinder, comprising a lock shell 1, a lock cylinder 2, a plug assembly 11 and a lock key 3, the front end of the lock shell 1 is provided with a lock cylinder mounting hole 4 for rotatingly mounting the lock cylinder 2, the plug assembly 11 is arranged at the lower end of the lock cylinder mounting hole 4, the front end of the lock cylinder 2 is provided with a lock key insertion port 5 for inserting the lock key 3, the upper end of the lock cylinder 2 is provided with a first communication groove 6 in communication with the lock key insertion port 5, the upper end of the lock shell 1 is provided with a second communication groove 7 in communication with the lock cylinder mounting hole 4, a resilient sliding assembly is slidably arranged in the second communication groove 7, the lower end of the resilient sliding assembly is provided with a limiting flange 8, the limiting flange 8 extends into the first communication groove 6, an avoiding circular groove 9 in communication with the first communication groove 6 is arranged on the circumferential outer wall of the lock cylinder 2, a pushing flange 10 is arranged on the upper end of the lock key 3, when the lock key 3 is inserted into the lock key insertion port 5, the pushing flange 10 can inwardly push the limiting flange 8 to move to one side of the avoiding circular groove 9, so that when the lock cylinder 2 rotates, the limiting flange 8 enters the avoiding circular groove 9.
[0020] According to the above structure, when the lock is opened, the lock key 3 is inserted into the lock key insertion port 5 of the lock cylinder 2, the pushing flange 10 at the upper end of the lock key 3 pushes the limiting flange 8 to move at the same time of insertion, and when the lock key 3 is completely inserted, the plug assembly 11 at the lower end is in an unlocking state, and at the same time, the limiting flange 8 moves to one side of the avoiding circular groove 9, so that the lock key 3 can drive the lock cylinder 2 to rotate to achieve the purpose of unlocking, and further, the rotation of the lock cylinder 2 not only depends on the traditional plug assembly 11, but also is limited by the limiting flange 8, as long as the limiting flange 8 is at one side of the avoiding circular groove 9, the lock cylinder 2 can rotate, and further, the traditional plug assembly 11 not only maintains the simple feature of the manufacturing process, but also can prevent technical opening, and greatly improves the anti-theft performance of the lock.
[0021] It should be noted that the plug assembly 11 is a conventional setting, which will not be described in detail here.
[0022] As shown in Figure 1 , Figure 2 , Figure 5 The resilient sliding assembly comprises a sliding seat 21 slidably arranged in the second communication groove 7 and a spring 22 arranged at the rear end of the sliding seat 21, and the limiting flange 8 is arranged on the sliding seat 21.
[0023] Further, a dial mounting slot 31 for mounting the unlocking dial 30 is arranged on the lock shell 1, the rear end of the second communication groove 7 is communicated with the dial mounting slot 31, a sliding groove 32 is arranged on the left and right sides of the second communication groove 7, a sliding piece 33 sliding in the sliding groove 32 is arranged on the left and right sides of the sliding seat 21, and a plug 34 is arranged at the rear end of the second communication groove 7, and the spring 22 is arranged between the sliding seat 21 and the plug 34.
[0024] A circular groove 41 is arranged at the rear end of the sliding seat 21, and one end of the spring 22 is arranged in the circular groove 41.
[0025] When the elastic sliding assembly is mounted, the second communication groove 7 is arranged in the dial mounting slot 31, the sliding piece 33 is correspondingly arranged in the sliding groove 32, then the spring 22 is arranged in the circular groove 41, and finally the plug 34 is arranged at the rear end of the second communication groove 7, so that the sliding seat 21 and the limiting flange 8 are kept in a forward state under the action of the spring 22, when the lock key 3 is inserted, the pushing flange 10 of the lock key 3 pushes the limiting flange 8 to move backward and to move to one side of the avoiding circular groove 9, and when the lock key 3 is pulled out, the sliding seat 21 and the limiting flange 8 are reset under the action of the spring 22.
[0026] In order to facilitate the limiting flange 8 to rotate into the avoiding circular groove 9, a first inclined angle is arranged at the opening edge corner of the avoiding circular groove 9 communicated with the first communication groove 6, and a second inclined angle is arranged at the edge corner of the limiting flange 8.
[0027] In the utility model, the pushing flange 10 is integrally formed with the lock key 3.
[0028] The basic principle and main features of the utility model and the advantages of the utility model are shown and described in combination with the drawings, and the skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only for illustrating the principle of the utility model, and the utility model can have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements all fall into the scope of the utility model claimed for protection. The protection scope of the utility model is defined by the appended claims and equivalents thereof.
Claims
1. A pick-resistant lock cylinder for a mechanical lock, comprising a lock housing (1), a lock barrel (2), a plug assembly (11) and a lock key (3), the lock housing (1) being provided at a front end thereof with a lock barrel mounting hole (4) for rotatably mounting the lock barrel (2), the plug assembly (11) being arranged at a lower end of the lock barrel mounting hole (4), and the lock barrel (2) being provided at a front end thereof with a lock key insertion opening (5) for inserting the lock key (3), characterized in that: The upper end of the lock cylinder (2) is provided with a first communication groove (6) communicated with the lock key insertion port (5), the upper end of the lock shell (1) is provided with a second communication groove (7) communicated with the lock cylinder mounting hole (4), a elastic sliding assembly is slidably arranged in the second communication groove (7), the lower end of the elastic sliding assembly is provided with a limiting flange (8) extending into the first communication groove (6), an avoiding circular groove (9) communicated with the first communication groove (6) is arranged on the circumferential outer wall of the lock cylinder (2), a pushing flange (10) is arranged on the upper end of the lock key (3), when the lock key (3) is inserted into the lock key insertion port (5), the pushing flange (10) can inwardly push the limiting flange (8) to move the limiting flange (8) to one side of the avoiding circular groove (9), so that the limiting flange (8) enters the avoiding circular groove (9) when the lock cylinder (2) rotates.
2. A mechanically locked anti-pick cylinder according to claim 1, characterized in that: The elastic sliding assembly comprises a sliding seat (21) slidably arranged in the second communication groove (7) and a spring (22) arranged at the rear end of the sliding seat (21), and the limiting flange (8) is arranged on the sliding seat (21).
3. A pick-resistant cylinder for a mechanical lock according to claim 2, wherein: A dial wheel mounting slot (31) for mounting the unlocking dial wheel (30) is further arranged on the lock shell (1), the rear end of the second communication groove (7) is communicated with the dial wheel mounting slot (31), a sliding groove (32) is arranged on the left and right sides of the second communication groove (7), a sliding piece (33) slidably arranged in the sliding groove (32) is arranged on the left and right sides of the sliding seat (21), a plug (34) is further arranged at the rear end of the second communication groove (7), and the spring (22) is arranged between the sliding seat (21) and the plug (34).
4. A pick-resistant cylinder for a mechanical lock according to claim 3, characterized in that: A circular groove (41) is arranged at the rear end of the sliding seat (21), and one end of the spring (22) is arranged in the circular groove (41).
5. A pick resistant lock cylinder for a mechanical lock according to claim 1, wherein: A first inclined angle is arranged at the opening edge corner of the avoiding circular groove (9) communicated with the first communication groove (6).
6. A pick resistant lock cylinder for a mechanical lock according to claim 1, characterized in that: A second inclined angle is arranged at the edge corner of the limiting flange (8).
7. A pick resistant lock cylinder for a mechanical lock according to claim 1, wherein: The pushing flange (10) is integrally formed with the lock key (3).