Anti-drilling lock cylinder structure of mechanical lock
By setting an anti-drilling ring cover and an anti-drilling plate on the lock cylinder, and adding first and second anti-drilling pins, a multi-layer protection is formed, which solves the problem of insufficient anti-drilling performance of the lock cylinder and achieves high anti-drilling strength of the lock cylinder.
Patent Information
- Application Number
- CN202520425938.1
- 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
Existing lock cylinders are not sufficiently drill-resistant when faced with equipment such as electric drills, and the end cap structure is easily damaged under strong destructive forces.
The lock cylinder employs a combination structure of anti-drill ring cover and anti-drill plate, and is equipped with first and second anti-drill pins to form multi-layer protection, thereby enhancing the lock cylinder's anti-drill capability.
It significantly improves the lock cylinder's drill resistance, provides multiple layers of protection, and enhances the lock cylinder's drill resistance.
Smart Images
Figure CN223854006U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of lockset, especially relates to a mechanical lock's anti-drilling lock cylinder structure. BACKGROUND
[0002] The lock cylinder is the heart of the lockset, and is the main part for controlling the opening of the lock. The main function of the lock cylinder is to rotate the dial, thereby driving other components of the lock body, to achieve the purpose of opening and closing. The lock cylinder is widely used in various types of door locks, fireproof locks and other lock products. Although the head structures are not the same, the functions are the same. Most of the existing lock cylinders are made of copper or aluminum alloy and other soft materials, which cannot resist the violent destruction of the lock cylinder by the thief using a drill bit and other equipment.
[0003] Therefore, in order to improve the anti-drilling function of the lock cylinder, one of the anti-drilling means of the prior art is to increase an end cover at the end of the lock cylinder. The end cover is installed at the end of the lock cylinder, and the end cover is generally made of high-strength alloy material. When drilling with a drill bit, the end cover must be destroyed first, thereby improving the anti-drilling performance. However, the end cover of this structure can still be destroyed under strong force. SUMMARY
[0004] The utility model aims at solving one of the problems in the prior art to some extent. Therefore, the utility model provides a mechanical lock's anti-drilling lock cylinder structure.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0006] A mechanical lock's anti-drilling lock cylinder structure, comprising a lock shell and a lock cylinder, the lock shell comprising a lock cylinder mounting portion for mounting the lock cylinder and a plug mounting portion for mounting a plug assembly, the front end of the lock cylinder being provided with a lock hole for inserting a lock key, first anti-drilling pins being inserted on the lock cylinder and located on both sides of the lock hole, an anti-drilling circular ring cover being provided at the front end of the lock cylinder mounting portion, an anti-drilling plate being rotatably provided in the anti-drilling circular ring cover, and a through hole corresponding to the lock hole being provided on the anti-drilling plate.
[0007] In some embodiments, a fixing seat is provided at the lower end of the anti-drilling circular ring cover, a positioning flange is provided on the inner side of the fixing seat, a clamping groove and an extension portion extending forward are provided at the front end of the plug mounting portion, the fixing seat is arranged on the extension portion, and the positioning flange is clamped into the clamping groove.
[0008] In some embodiments, a second anti-drilling pin vertically arranged is inserted on the extension portion.
[0009] In some embodiments, a fixing hole is provided at the lower end of the fixing seat, and when the second anti-drilling pin is inserted into the extension portion from bottom to top, the upper end of the second anti-drilling pin is inserted into the fixing hole.
[0010] In some embodiments, the inner wall of the anti-drilling ring cover is provided with a limiting ring, and the anti-drilling plate is disposed between the limiting ring and the lock cylinder.
[0011] In some embodiments, a recessed hole is provided at the front end of the lock cylinder, and a positioning post is provided on the inner side of the anti-drill plate, the positioning post being inserted into the recessed hole.
[0012] Compared with the prior art, the beneficial effects of this utility model are: the anti-drilling ring cover and anti-drilling plate form the first line of defense for the lock cylinder, and the first anti-drilling pins are provided on the upper side of the lock cylinder above the key hole, which forms the second line of defense for the lock cylinder, thereby greatly improving the anti-drilling strength of the lock cylinder. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0014] Figure 2 This is a cross-sectional structural diagram of the present invention;
[0015] Figure 3 This utility model Figure 2 Enlarged view of point A;
[0016] Figure 4 This is an exploded structural diagram of the present invention. Detailed Implementation
[0017] The following detailed description provides various embodiments or examples for implementing this utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of this utility model and do not represent a specific relationship between the different embodiments and / or structures discussed.
[0018] like Figures 1-4 The diagram shows an anti-drilling lock cylinder structure for a mechanical lock, comprising a lock shell 1 and a lock cylinder 2. The lock shell 1 includes a lock cylinder mounting part 3 for mounting the lock cylinder 2 and a pin mounting part 4 for mounting the pin tumbler assembly. The front end of the lock cylinder 2 is provided with a key hole 5 for key insertion. First anti-drilling pins 6 are inserted into the lock cylinder 2 on both sides of the key hole 5. An anti-drilling ring cover 7 is provided at the front end of the lock cylinder mounting part 3. An anti-drilling plate 8 is rotatably disposed inside the anti-drilling ring cover 7. The anti-drilling plate 8 is provided with through holes 9 corresponding to the key hole 5.
[0019] According to the above structure, the first single line of protection for the lock cylinder 2 is provided by the anti-drilling ring cover 7 and the anti-drilling plate 8, and the second line of protection for the lock cylinder 2 is provided by the first anti-drilling pin 6 located on the upper side of the lock hole 5, thereby greatly improving the anti-drilling strength of the lock cylinder.
[0020] Referring to Figure 1 , Figure 3 , Figure 4 As shown in the drawings, the lower end of the anti-drilling ring cover 7 is provided with a fixing seat 21, the inner side of the fixing seat 21 is provided with a positioning flange 22, the front end of the pin installation part 4 is provided with a clamping groove 23 and an extension part 24 extending forward, the fixing seat 21 is arranged on the extension part 24, and the positioning flange 22 is clamped into the clamping groove 23; after the anti-drilling ring cover 7 and the fixing seat 21 are installed, the front end of the anti-drilling ring cover 7 is flush with the end of the extension part 24.
[0021] Further, the second anti-drilling pin 31 vertically arranged on the extension part 24, so that the second anti-drilling pin 31 can prevent the drill from drilling into the pin installation part 4, thereby protecting the pin assembly and further improving the anti-drilling strength of the lock cylinder.
[0022] Further, the lower end of the fixing seat 21 is provided with a fixing hole 41, and when the second anti-drilling pin 31 is inserted into the extension part 24 from bottom to top, the upper end of the second anti-drilling pin 31 is inserted into the fixing hole 41.
[0023] The inner wall of the anti-drilling ring cover 7 is provided with a limiting ring 51, and the anti-drilling plate 8 is arranged between the limiting ring 51 and the lock cylinder 2.
[0024] The front end of the lock cylinder 2 is provided with a recess hole 61, and the inner side of the anti-drilling plate 8 is provided with a positioning column 62, which is inserted into the recess hole 61.
[0025] When the anti-drilling ring cover 7 and the anti-drilling plate 8 are installed, the positioning column 62 on the anti-drilling plate 8 is first inserted into the recess hole 61 at the front end of the lock cylinder 2, at this time the through hole 9 and the lock hole 5 are in communication, and the lock key can be inserted into the lock hole 5, then the anti-drilling ring cover 7 is covered on the front end of the anti-drilling plate 8 and the lock cylinder 2, the positioning flange 22 is clamped into the clamping groove 23, the front end of the anti-drilling ring cover 7 is flush with the end of the extension part 24, finally, when the second anti-drilling pin 31 is inserted into the extension part 24 from bottom to top, the upper end of the second anti-drilling pin 31 is inserted into the fixing hole 41, thereby fixing the anti-drilling ring cover 7, which is simple in structure and convenient to install.
[0026] The person skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and all the changes and improvements fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.
Claims
1. A drill-proof lock cylinder structure for a mechanical lock, comprising a lock shell (1) and a lock cylinder (2), wherein the lock shell (1) includes a lock cylinder mounting part (3) for mounting the lock cylinder (2) and a pin mounting part (4) for mounting a pin assembly, and the front end of the lock cylinder (2) is provided with a key hole (5) for inserting a key, characterized in that: First anti-drilling pins (6) are arranged on the lock cylinder (2) and on both sides of the lock hole (5), an anti-drilling ring cover (7) is arranged at the front end of the lock cylinder mounting portion (3), an anti-drilling plate (8) is rotatably arranged in the anti-drilling ring cover (7), and a through hole (9) corresponding to the lock hole (5) is arranged on the anti-drilling plate (8).
2. The anti-drilling lock cylinder structure of a mechanical lock according to claim 1, characterized in that: A fixing seat (21) is arranged at the lower end of the anti-drilling ring cover (7), a positioning flange (22) is arranged on the inner side of the fixing seat (21), a clamping groove (23) and an extension portion (24) extending forward are arranged at the front end of the pin mounting portion (4), the fixing seat (21) is arranged on the extension portion (24), and the positioning flange (22) is clamped into the clamping groove (23).
3. A drill resistant lock core structure for a mechanical lock according to claim 2, wherein: A second anti-drilling pin (31) vertically arranged is arranged on the extension portion (24).
4. The anti-drilling lock cylinder structure of a mechanical lock according to claim 3, characterized in that: A fixing hole (41) is arranged at the lower end of the fixing seat (21), and when the second anti-drilling pin (31) is inserted into the extension portion (24) from bottom to top, the upper end of the second anti-drilling pin (31) is inserted into the fixing hole (41).
5. The anti-drill cylinder structure of a mechanical lock according to claim 1, characterized in that: A limiting ring (51) is arranged on the inner wall of the anti-drilling ring cover (7), and the anti-drilling plate (8) is arranged between the limiting ring (51) and the lock cylinder (2).
6. A drill resistant lock core structure for a mechanical lock according to claim 5, wherein: A recess hole (61) is arranged at the front end of the lock cylinder (2), and a positioning column (62) is arranged on the inner side of the anti-drilling plate (8), and the positioning column (62) is inserted into the recess hole (61).