RU2414572C2 - Cylindrical lock - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: cylindrical lock comprises body (1) and cylindrical core (2), installed with the possibility of rotation in body, having vertical channel of key. In body (1) and core (2) there are coaxial cylindrical holes (3) provided in body and holes (4) in core, where locking pins (5), springs (9) and combinations of cylindrical pairs of body pins (6) - pins (7) and (8) of core are located. Travel of specified pins is limited by means of fixators (10) and at least one pin (8) of core is arranged so that depth of its entry into channel of key of cylindrical core (2) is reduced relative to depth of entry of remaining pins (7) of core. Cylindrical lock, in compliance with this invention, has a row of advantages, such as: mode of core pins fixation does not require a certain shape of pin and hole in body; in cases when cylindrical lock is installed with a turn of 180°, a pair of pins has smaller depth of entry into key channel as they interact.

EFFECT: there is no necessity to use additional elements for pins.

Description

Field of Invention

The present invention relates to cylindrical locks that are used in the field of light industry, in particular, as locking devices for residential buildings, public buildings, etc.

State of the art

Known cylindrical locks consisting of a housing and a cylindrical core placed inside the housing with the possibility of rotation and having a vertical channel for the key, while in these housing and the core are made coaxial holes in which springs and pairs of pins consisting of a housing pin and a core pin are placed . The depth of entry of at least one core pin into the key channel is less than the depth of entry of other core pins. Thus, a gap is formed between the (protective) core pin and the key profile line when using the emergency key. In the event of a break-in attempt, this gap prevents the kinematic movement from being transmitted to the (protective) core pin and accordingly makes unlocking impossible. A cylindrical lock is also known in which anti-hacking is achieved by means of the complex shape of the pin of the body of the pin pair, which has a limited depth of entry in the key channel, namely, the cross section of the specified pin of the body is made in the form of a regular polygon with an outer diameter corresponding to the diameter of the hole in the body, limiting thus, the depth of approach of the specified pin housing a smaller diameter of the corresponding holes in the core [EP 1418294 Int. Cl. ЕВВ 27/00]. In addition, to prevent hacking when installing the lock with its rotation through 180 °, at least one magnet is installed in one of the pins of the pin pair having a limited depth of entry in the key channel, while the other pin is made of ferromagnetic material. The disadvantage of this cylindrical lock is the complexity of its design. Also, the disadvantage is that the restriction of the stroke of the polygonal pin of the housing can lead to a violation of the connection of the pins in the pin pair with a reduced depth of entry in the key channel when the cylindrical lock is mounted rotated 180 °, which leads to the need to use an additional element (magnet) in one pin and the need to manufacture another pin from a ferromagnetic material.

SUMMARY OF THE INVENTION

The aim of the present invention is to provide a cylindrical lock with increased anti-tampering by means of simplified technology and inexpensive materials and without reducing the number of possible combinations of locking the lock.

In accordance with the present invention, this goal is achieved by means of a cylindrical lock, consisting of a housing and rotatably housed in a cylindrical core having a vertical channel for the key, with coaxial holes made in said housing and core. A locking pin and a pair of cylindrical pins including a housing pin and a core pin, compressed by a spring, are installed in each hole. The depth of entry of the core pins into the key channel is limited by means of clamps. The latches that limit the travel of the core pins are formed in the holes in the form of transitions in the holes having a larger diameter in the lower part of the core openings and a smaller diameter in the upper part of the core openings. Thus, all the latches are made in one plane, perpendicular to the axis of the holes of the core. The core pins mounted coaxially in the holes of the core have, respectively, an upper part with a smaller diameter relative to the diameter of the lower part, and the diameters of a certain part of the core pins correspond to the diameters of the corresponding part of the holes in the core. The depth of entry of at least one core pin into the key channel is reduced relative to the depth of entry of the remaining core pins. To this end, the specified core pin is made in such a way that the plane passing along its upper part perpendicular to its axis lies between the plane forming the latches and the plane passing along the top of the unmodified (standard) core pins perpendicular to their axes. Parts of standard pins with a smaller diameter have the same length.

A cylinder lock according to the present invention has the following advantages:

- the fixation pattern of the core pins does not require a special shape of the housing pins and a special shape of the holes in the housing;

- in cases when the cylindrical lock is installed with its rotation through 180 °, a pair of pins (core pin - housing pin) have a smaller depth of entry into the key channel during their interaction, while there is no need to use additional elements (magnets and special materials) for the pins .

Brief Description of the Drawings

The invention is described in more detail below by way of example with reference to the attached drawings, where

Figure 1 is a partial longitudinal section of a cylindrical lock;

Figure 2 is a partial cross section through coaxial holes in the housing and core.

DETAILED DESCRIPTION OF THE INVENTION

In accordance with the examples, one of the preferred embodiments of the present invention is shown in figure 1 and figure 2. The cylinder lock consists of a housing 1, a cylindrical core 2, which is rotatably housed in the housing 1 and has a vertical key channel. Cylindrical coaxial holes 3 in the casing and holes 4 in the core are arranged radially relative to the axis of the casing 1 and the core 2 in the housing 1 and the core 2; locking pins 5 and combinations of cylindrical pairs of pins (pin 6 of the casing - pin 7 of the core or housing pin 6 - modified core pin 8), said pairs of pins are compressed by spring 9. In this particular embodiment of the invention, the locking combination is carried out using only one modified pin 8 of ser Dechnik, although other embodiments may be implemented by more than one modified pin. The stroke of the core pins 7 and the modified core pin 8 is limited by latches 10, which are made in the form of transitions in the holes 4 from the holes of a larger diameter in the lower part of the holes of the core to the holes of a smaller diameter in the upper part of the holes of the core. Moreover, all the latches 10 are located in the plane C, perpendicular to the axis of the holes 4 in the core. The upper parts of the core pins 7 and the modified pin 8 have a smaller diameter than the diameter of their lower parts, and the diameters of the corresponding parts of the core pins 7 and the modified core pin 8 correspond to the diameters of the corresponding parts of the core holes 4. The parts of the core pins 7 with a smaller diameter are of equal length, thus, the upper parts of all core pins 7 are located in a plane A extending perpendicular to the axes of the indicated pins 7. The core pin 8 is modified so that the plane B extends along the top of the modified pin 8 perpendicularly its axis and is located between plane A and plane C.

Claims (1)

A cylindrical lock consisting of a housing 1 and a cylindrical core 2 mounted rotatably in the housing 1, having a vertical key channel, coaxial holes are made in the said housing and core, a locking pin, a spring and a pair of pins consisting of a pin are installed in each specified hole case and core pin, while the depth of entry of at least one core pin into the vertical channel of the key is reduced relative to the depth of entry of the remaining core pins by means of clamps, characterized in that the latches (10), restricting the course of the cylindrical pins (7) and (8) of the core, are formed in the form of transitions in the holes (4) of the core, which are made with a large diameter in the lower part of the holes (4) of the core and with a smaller diameter in the upper part of the holes (4) of the core in such a way that all the latches (10) are located in the plane (C), perpendicular to the axis of the holes (4) of the core, and the upper parts of the cylindrical pins (7) and (8) of the core are aligned the holes (4) of the core, and their diameter is smaller the diameter of their lower part, and the diameters of the corresponding parts of the pins (7) and (8) of the core correspond to the diameters of the corresponding parts of the holes (4) of the core, and the parts of the smaller diameter of the pins (7) of the core have an equal length, so that the upper parts of the pins (7) of the core located in a plane (A) perpendicular to the axis of the indicated pins (7), while at least one core pin (8) is modified in such a way that the plane (B) passing along the top of the modified core pin (8) perpendicular to him about si and is located between the plane (A) and the plane (C).

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