RU2049895C1 - Lock cylinder mechanism - Google Patents

Abstract

FIELD: locking devices. SUBSTANCE: lock cylinder mechanism has body with axial channel, spring-loaded pushers radially arranged in body, turning core located in body channel and provided with radially installed pins of nonmagnetic material contacting pushers, and channel for key. Key bits have security part. Spring-loaded pushers with respective pins are installed in one part of channel, and the other part of channel accommodates pins of two type-sizes for motion in channel. Key sections with steel pins have inserts of magnetic material. EFFECT: higher degree of security. 6 dwg

Description

 The invention relates to locking devices, namely to cylinder mechanisms of door locks, unlocked on both sides of the door.

 A cylinder mechanism is known, comprising a housing with spring-loaded pushers radially mounted in it, a rotary core located in the housing with pins installed therein, in contact with the pushers, and a keyway, a locking assembly connected to the core by means of spring-loaded elements, the mechanism being provided with an additional key and a washer for switching to this key (author's certificate. USSR N 1059108, class E 05 B 13/00, 1982).

 However, the known mechanism has a complex structure that complicates their manufacture and operation.

 The closest known among the known invention to the technical essence is a cylinder lock mechanism comprising a housing with an axial channel, spring-loaded pushers radially mounted in the housing, rotary cores of the external and internal parts of the mechanism located in the housing channel, each of which is equipped with pins radially mounted in it in contact with the pushers and the keyway, a leash located between the cores and rigidly connected with them, as well as an additional key for locking lock ki (auth. svid. USSR N 1209811, Cl. E 05 B 27/02, 1983).

 The disadvantage of this lock is its low secrecy and low reliability against opening using a master key or other key.

 The aim of the invention is to create a lock design that combines reliable protection against tampering with a master key or other key with its small dimensions.

 Figure 1 shows a cylinder mechanism, a General view in a closed state with a longitudinal section; figure 2 section aa in figure 1; figure 3 cylinder mechanism in the open state with a longitudinal section with a key, General view; in FIG. 4 section BB in figure 3; figure 5 diagram of the locking mechanism; Fig.6 protection scheme of the mechanism from opening with a master key.

 The cylinder lock mechanism comprises a housing 1 with an axial channel 2, in which a rotary core 3 is located. Coaxial radial channels 4 and 5 are made in the housing 1 and the core 3, in part of which brass code pins 7 and housing blocking pins 8 are spring-loaded in pairs 6, and in the rest, the fixed pins 9 and the movable steel pins 10 and 11, respectively, of two sizes (small and long).

 The core 3 has a turnkey profile channel 12, on which a mechanical thread 14 is made for the code pins 7, and in accordance with the length of the pins 10 and 11, the magnetic inserts 15 interacting with the indicated pins are installed in the key.

 The cylinder mechanism operates as follows.

 In the closed state, the core 3 is blocked by pins 8, 10 and 11 from turning in the housing 1. After inserting the key 13 into the channel 12 of the core 3, the pins 7 and 8 are inserted according to the mechanical thread 14 so that their section plane coincides with the section plane of the body 1 and the core 3. The movable steel pins 10 and 11 are attracted to the permanent magnets 15 mounted at an appropriate height. The upper plane of the pins 10 and 11 coincides with the separation plane of the core 3 and the housing 1. The core 3 is unlocked and can rotate when the key 13 is rotated.

 The proposed design of the cylinder mechanism increases its secrecy and reliability against tampering by selecting a key or master keys.

 The level of secrecy is enhanced by the use of two types of code elements in one mechanism. The first type is a spring-loaded pair of brass pins 7 and 8 having different lengths. The second type is movable steel pins 10 and 11 of two sizes in length. Two different heights of the location of the permanent magnet 15 correspond to them on the key 13. If, under the small pin 10 on the key 13, the magnet 15 is installed at a low height, then due to the increased distance between the pin 10 and the magnet 15, the force of the latter will not be enough to lift the pin 10 to the required height . When installing the magnet 15 on the key 13 at a high height, the longer pin 11 will abut against it, however, due to the increased length, it will not come out with its upper plane on the separation plane of the housing 1 and core 3.

 Reliability against tampering is enhanced by the following factor. Since the steel pin 10 or 11, abutting against the fixed pin 9, can only be lifted using a permanent magnet 16 after inserting the latter into the key channel 12, it completely covers the free zone of the channel and restricts the access of the master key 17 to the code pins 7 behind it.

Claims (1)

 A LOCK CYLINDER MECHANISM, comprising a housing with an axial channel, spring-loaded pushers radially mounted in the housing, a rotary core located in the housing channel, which is provided with pins made of non-magnetic material radially mounted therein, in contact with the pushers and the key channel, the barbs of which have a secret part that differs the fact that the spring-loaded pushers with the corresponding pins are installed in one part of the channels, and in the other there are steel pins of two standard sizes with the ability to change The openings in the channel, and in the areas of the key interacting with the steel pins, inserts of magnetic material are made.

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