RU2029844C1 - Lock - Google Patents

Abstract

FIELD: safe doors locking. SUBSTANCE: body 1 of the lock has bolt 4 with pins 8 installed on bolt end and having two freedoms. Coded apertures, providing pin entering by sliding fit when axial moving bolt 4 in "open" position, are made in key 7 and end of body 1. EFFECT: high reliability. 2 cl, 4 dwg

Description

 The invention relates to hardware, and more particularly to locks for external locking of doors, such as safes, used by the population.

 A known lock adopted by the author as a prototype, comprising a housing, a locking bar located in the bolt housing, having oblique teeth and a longitudinal groove, an abutment mounted in the housing with axial movement to withdraw it from the bolt groove, and a push key with the main and additional rows of code cavities [1].

 However, the design of the known lock does not guarantee against unauthorized unlocking of the door, which does not allow it to be used to lock the safe.

 The aim of the invention is to increase privacy.

 This goal is achieved by the fact that in the well-known lock containing the housing with a deadbolt, a locking bar and a key, according to the invention, at least three cylindrical pins are placed on the end of the deadbolt in an arbitrary combination, code holes are provided coaxially with the holes in the key and the end of the housing, providing the entry of the pins on a sliding fit with the axial movement of the bolt in the "Open" position, and the pins have two degrees of freedom relative to the axes of the code holes, providing a displacement of the axis of the pins from the nominal positions, and the holes in the key from the side of the pins have guide chamfers, the size of which ensures the capture of the pins within their degree of freedom.

 The pins and their corresponding code holes in the key and the end of the housing can be made with different diameters, which further increases the security of the lock.

 In FIG. 1 shows a general view of the lock in the "Open" position; figure 2 - key; figure 3 - lock in the "Closed" position; figure 4 is an attempt to unauthorized opening of the lock without a key.

 The lock contains a housing 1 with a longitudinal groove 2 and a key gap 3, located inside the housing 1 of the bolt 4, equipped with a handle 5, which through the groove 2 goes outside, the locking plate 6, the key 7. At the end of the bolt there are pins 8, in the end of the housing 1 code holes 9 are made, and in key 7, holes 10 with guide chamfers 11.

 The castle operates as follows.

 When the lock is unlocked, the key 7 is inserted into the slot 3 of the housing 1 and the bolt 4 is moved by the bolt 4. In this case, the pins 8 freely located in the space come into contact with the guide chamfers 11 of the holes 10 in the key 7, pass through the holes 10 in the key and enter the holes 9 at the end of the case. The bolt 4 is fully extended from the locking plate 6 - the lock is open.

 When locking with a handle 5, the bolt 4 is moved until it enters the locking strip 6. In this case, the pins 8 are pulled out of the holes 9 at the end of the housing 1, from the holes 10 in the key 7 and take an arbitrary position in space.

 In the event of an unauthorized attempt to open the lock without a key while moving the bolt, 4 pins 8, which occupy an arbitrary position in space, abut against the end of the housing 1 without falling into the code holes 9, which does not allow the bolt 4 to be pulled out of the locking strip 6.

 The proposed lock with a fairly simple and technological design allows for secrecy due to the fact that the arbitrary location of the pins on the end of the bolt gives an unlimited number of combinations and does not allow you to pick up a key or open the lock without it.

Claims (2)

 1. LOCK, comprising a housing with a bolt located therein, having working elements for interacting with key code holes, a locking strip, characterized in that, in order to increase security by increasing code combinations, it additionally contains code holes in the end of the case, this working elements of the bolt are located on its end and made in the form of at least three cylindrical pins located coaxially with the code holes of the housing and the key with the possibility of entering into the latter along a sliding fit with an axis moving the bolt to the "Open" position, and the pins have two degrees of freedom relative to the axes of the code holes of the case and the key to ensure the displacement of the axes of the pins and prevent unauthorized opening of the lock without a key, and the code holes of the key on the side of the pins have guide chamfers to ensure the capture of the pins in the limits of their degree of freedom.  2. The lock according to claim 1, characterized in that the diameters of the pins and the corresponding code holes of the housing and the key are made of different sizes.

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