RU133553U1 - CYLINDER MECHANISM PROTECTED FROM OPENING BY BUMP KEY - Google Patents

Abstract

A cylinder mechanism comprising a housing in which there are two symmetrical coaxial holes for the cores and a groove between the holes for installing the cam, in these holes there are cores that are connected to the cam by means of a kupung, in the lower part of the housing there are holes for supporting pins, holes for the code pins are made in the core, while the holes for the code pins are aligned with the holes for the support pins, the support pins and spring, and in the holes of the core are located code pins, characterized in that at least one of the holes for the code pins is made to a depth of 1.6-2.5 mm less than the depth of the other holes for the code pins in the core, moreover, the pin installed in this hole is 0.5-1.0 mm shorter than the depth of this hole.

Description

The technical field to which the utility model relates.

This utility model relates to a cylinder mechanism that is protected from being opened by a bump key. The cylinder mechanism consists of a housing, cores, cam, made in the housing of coaxial holes, in which support pins and return springs are installed, and also made in the core of coaxial holes, one of which is protected from opening by a bump key, and code holes are installed in the core holes the pins.

State of the art

Pin cylinder mechanisms have been around for more than 160 years and are popular today. Cores and a cam are installed in the cylinder housing; the cores work with the housing by means of a locking device - code pins, support pins and return springs. When the lock is opened, the key is inserted into the cylinder mechanism, which unlocks the cylinder mechanism, the key is rotated together with the core, the core works with the cam through the coulung, the cam raises the bolt plate in the lock, and the lock opens. A large number of cylinder mechanisms can be opened with both the original key and the bump key. There are different types of cylinder mechanisms, including those with a large number of combinations (secrets) that can be similarly opened with a bump key.

Utility Model Disclosure

The objective of this utility model is to propose a cylinder mechanism with protection against a bump key. The cylinder mechanism consists of a housing, cores, a cam, made in the housing of coaxial holes, in which support pins and return springs are installed, as well as coaxial holes made in the core, in which code pins are installed. This design solution for bump protection is not complicated and very convenient for mass production.

The above problem is solved by the design of the cylinder mechanism, consisting of a housing, two cylindrical cores and a cam. Both cores are connected by a kuplung and work together with a cam. Coaxial cylindrical holes are made in the housing and cores, in which the code pins and support pins, as well as the springs, are placed. In the holes of the core there is at least one hole that has protection against opening with a bump key. The specificity of this hole is that the depth of this hole is less than the depth of other holes by 1.6-2.5 mm. Accordingly, a code pin is installed in this hole, the length of which is 0.5-1.0 mm less than the depth of this hole.

This utility model has the following advantages:

- A simple design, very convenient for mass production, has protection against tampering with bumping and increases safety;

- easily integrates into the assembly process, which increases the efficiency of the process;

- new parts are not used, there is no additional processing process, which allows to reduce production costs.

Brief Description of the Drawings

The utility model is illustrated by drawings:

figure 1 - pin cylinder mechanism;

figure 2 - pin cylinder mechanism with a bump key;

figure 3 - pin cylinder mechanism with protection from bumping;

figure 4 - the housing of the cylinder mechanism;

figure 5 - the core of the cylinder mechanism with protection against bumping;

6 - opening with a bump key cylinder mechanism with protection against bumping;

7 is a lock with a mounted pin cylinder mechanism.

Utility Model Implementation

As shown in figure 1, the cylinder mechanism consists of a housing (1), two cylindrical cores (2) and a cam (3). Both cores are connected by a kupung (8) and work together with a cam. Coaxial cylindrical holes are made in the housing and cores, in which the code pins (4) and support pins (5), as well as the springs (6), are placed. When the original key is inserted into the cylinder mechanism, then all the code pins (4) are placed on the line of the core and cylinder connectors so that all the support pins (5) are in the cylinder body (1). Thus, when turning the key, the core has the ability to rotate. The key (7), which engages with the kupung (8), can rotate the cam, which drives the actuator (lock).

What is a bump key. The illegal lock tool is called a universal key. In the lock industry, this autopsy method refers to key selection methods. The bump key (9) has a cutting pitch identical to the cylinder being opened and has the same cutting depth on the key (see figure 2).

Figure 2 shows the method of opening the pin cylinder mechanism (1), then the cylinder, bump key (9). The method consists in the following: a bump key is inserted into the cylinder and a high-frequency shock is applied to the end of the head of the key, which leads to high-frequency vibration and, at the same time, directional pressure is directed towards the cylinder opening. As a result of this action, the teeth of the bump key have an impact on the code pin (4) and the code pin moves, transmitting movement to the support pin (5) and return springs (6). There is a compression and subsequent straightening of the spring, which acts on the support and code pin, which moves until it collides with the bump key. As a result of vibration, all the code and support pins of the cylinder are in motion and, when all the code pins are on the line of the core connector (10), at a constant directional pressure towards the cylinder opening, the bump key rotates with the cylinder core (2), which leads to the opening of the cylinder.

As shown in FIGS. 3-5, the holes for the core (11) are symmetrically located in the cylinder body, and a selection is made for the cam (12). The cores of the cylinder are connected to the cam by means of a kupunung (8), which rotate together with the cam of the cylinder. In the body and core of the cylinder mechanism, 10 coaxial holes are made. Supporting pins (5) and return springs (6) are installed in the openings of the cylinder body. Code pins (1) are installed in the holes of the core (2), among these holes, at least there is one hole that has protection against opening with a bump key. In this embodiment, in the third hole there is protection from the bump key, which consists in the fact that the depth of this hole is less than the depth of other holes by 1.6-2.5 mm. Accordingly, a code pin (15) is installed in this hole, the length of which is 0.5-1.0 mm less than the depth of this hole.

The cylinder body is made in the shape of U. Two holes for the core, which are coaxial, are symmetrically located in the body. Cores are fixed with retaining rings. The manufacture of kuplung and cam is carried out according to the standard scheme, which is set forth, for example, in patent CN 301539140 U.

As shown in FIG. 5, bump protection can be made on any of the five holes of the hole on either side, it is also possible to make several holes with bumper protection. The depth of the protective hole (14) is less than the depth of other holes (10) by 1.6-2.5 mm, that is, the difference between the height of the protective hole and standard holes is 1.6-2.5 mm. In the manufacture of this hole, drilling takes place to a shallower depth, which leads to the fact that the code pin comes out of the hole, but is simultaneously limited in movement by this hole. The pin length in this hole is 0.5-1.0 mm less than the depth of the hole, that is, the distance from the code pin to the end of the hole in the core is 0.5-1 mm. For example: when the depth of the protective hole is 6.2 mm, the standard holes have a depth of 7.8 mm, the length of the protective pin is 5.2 mm, respectively. With a protective hole depth of 5.3 mm, the pin length will be 4.8 mm.

Figure 3. (keyless image). In the absence of a key, all the support pins (5), under the influence of return springs (6), press the code pins (4), and force them to go to the top of the hole, with the upper parts of the support pins in the core, the lower parts in the body, so the core cannot rotate and open the cylinder.

6. When opened with a bump key (9), high-frequency vibration occurs, the teeth of the bump key impact the code pins (4), the code pins move down, and act on the support pins (5) and return springs (6). There is a compression and subsequent straightening of the spring, which acts on the support and code pin, which moves until it collides with the bump key. The code pin (15), the movement of which is limited by the hole, does not come into contact with the teeth of the bump key, as a result, there is no effect on the support pin, which remains stationary and makes rotation of the cylinder core impossible.

7 describes the operation of a cylinder with a lock body. This cylinder is installed in the lock in a special hole for the cylinder mechanism (16). The key is inserted into the well and rotated counterclockwise. The core rotates along with the key, the movement is transmitted through the coulung to the cam. The cam, rotating, catches the tooth of the bolt plate (17), and moves it to the left, which leads to locking the lock one revolution. Repeating this action, a second locking is carried out. To open the lock, the key is turned clockwise, and the cam, rotating, catches the tooth of the bolt plate and moves it to the right. Repeating this action, the second turn of the key is carried out and the lock is opened.

Claims (1)

A cylinder mechanism comprising a housing in which two symmetrical coaxial holes are made for the cores and a groove between the holes for installing the cam, cores are located in these holes, which are connected to the cam by means of a kupung, holes for supporting pins, holes for code pins are made in the core, while holes for code pins are aligned with holes for support pins, support pins and spring, and in the holes of the core are located code pins, characterized in that at least one of the holes for the code pins is made to a depth of 1.6-2.5 mm less than the depth of the other holes for the code pins in the core, moreover, the pin installed in this hole is 0.5-1.0 mm shorter than the depth of this hole.

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