RU2437993C2 - Double-sided code lock - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: code lock comprises a body, a crossbar, code elements made in the form of discs that rotate around their axes and fixed by spring-loaded balls, combs, a rotary disc, a sprocket, code handles, crossbar handles, fastening screws that ensure code replacement. Code elements made in the form of discs, together with deepened slots, providing for unlocking of the crossbar, are equipped with false slots, being a facility of protection against unauthorised code guessing. The rotary disc and the sprocket rigidly connected to it are made with the possibility of simultaneous vertical movement of combs and reciprocal displacement of the crossbar as all comb teeth match deepened slots of code elements. Holes in axes of internal code handles are displaced relative to each other by 36°, which makes it possible to easily change the code, having turned one or several handles by 180° or switched places of one or more handles. If fastening screws are in vertical position coaxially with deepened slots and the screw head is in the upper position, the crossbar is unlocked. The lock is made as capable of closing doors both from outside and inside.

EFFECT: high extent of secrecy, simple design, recoding without lock disassembly, and elimination of the possibility of unauthorised code guessing.

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Description

The invention relates to the field of hardware and relates to a combination lock, which can be used to lock the doors of rooms and safes with secret documentation by setting a code that must change from time to time. Known inventions are RU 2193643 C1, 11.27.2002, RU 2193087 C1, 11.20.2002, RU 2194141 C2, 12/10/2002, RU 2161684 C1, 01/10/2001, SU 1030523 A, 07/23/1983, US 3906761 A, 09/23/1975.

The most widespread are locks containing a housing, a bolt, rotatable code elements in the form of glasses with marks evenly spaced around the perimeter, and a means of protection against unauthorized selection of the code, which is made in the form of separate glasses with holes and grooves installed coaxially in the internal cavities of the code elements and fastened with the latter (RU 2193643 C1, 11.27.2002), as well as locks containing code marks on their outer surface, a handle, a body, in the axial opening of which a rotatable shaft with a flange at one end and a bolt at the other, and a radial hole has a pin for locking the shaft and code rings mounted on the housing and having recesses on the inner surface with the possibility of placing a pin in them (RU 2194141 C2, 10.12 .2002). The types of combination locks noted above are quite difficult to manufacture, changing the code (transcoding) is technically laborious, because It requires disassembling the lock, or impossible at all, such locks lock and unlock the doors only from the outside, it is possible that you can hear clicks when the code element is in the correct position using technical means (stethoscope, etc.).

Currently, the improvement of locks is in the direction of increasing the degree of their secrecy and ease of use. Secrecy can be increased by increasing the number of simple operations when selecting a code to open a lock, which reduces the likelihood of declassification of the code by unauthorized persons. Improving the usability is possible due to the development of a device with optimally convenient and easily controlled means of dialing a code when opening doors and changing it (recoding). The objective of the invention is the creation of a mechanical combination lock, providing the following technical result:

- a high degree of secrecy (up to 1,000,000 code combinations);

- simplicity of design;

- affordable and easy recoding without disassembling the lock;

- the ability to use a lock to lock the door from the inside of the room;

- elimination of the possibility of unauthorized selection of code using any technical means.

The technical solution of the claimed device meets the criterion of "novelty", because it is not known from the level of technical means at the date of filing the application, as well as the criterion of "inventive step", because not identified solutions with signs that match and affect the resulting technical result.

In figure 1. shows a General view of the lock code double-sided, figure 2. - structural elements. The code lock contains a crossbar 1, code elements 2, spring-loaded balls 3, combs 4, a rotary disk 5, an asterisk 6, code handles internal 7, fasteners 8, case 9, screws for fastening the internal code handles 10, code handles external 11, plates connecting the internal and external handles 12, the handles of the crossbar 13, the digital plate 14. The crossbar 1 is made of sheet material and installed with the possibility of authorized reciprocating movement. The lateral surface of the crossbar is made in the form of a gear rack interacting with an asterisk 6. A rotary disk 5 lifting the combs 4 is rigidly fixed on the same axis with the asterisk. Code elements 2, made in the form of disks, have one recessed groove “b” and nine “false” grooves "" a "blocking the bolt during unauthorized selection of the code. The code elements 2 are connected to the internal code handles 7 by fixing screws 10. Between themselves, the internal and external code handles, as well as the bolt handles, are connected by plates 12. The dialed code is fixed on a digital plate 14 fixed to the outside of the door.

The castle operates as follows. Figure 1 shows the lock in the "open" position. To lock the lock both on the inside and the outside, it is enough to use the code handles 7 to turn the code elements 2 so that the heads of all the fastening screws 10 are in the upper position, then pull out the bolt 1 by turning the handles 13 by 180 ° and reset the code by turning code pens for an arbitrary number of steps. Unlocking the lock on the inside of the door occurs in a similar way. To unlock the locks on the outside of the door, simply turn the external code knobs 11, which have a mark, to set the code, which is fixed on the digital plate 14, and open the lock by turning the handle 13 through 180 °. With a correctly typed code, as well as with the position of the mounting screws 10 heads up, all the recessed grooves "b" of the code elements 2 are opposite the teeth of the combs, which ensures using the rotary disk 5 the movement of the combs 4 and the bolt stroke. If the code is incorrectly typed, it is enough for one of the teeth of the comb 4 to rest against the “false groove” of the code element 2 and block the movement of the combs and the crossbar during this. When changing the code, it is enough to turn one or several internal code handles 7 through 180 ° or swap them, install all the fixing screws 10 heads up, and then fix the new code on the digital plate 14.

Such a fairly simple conversion is achieved by the fact that the axis of the holes in the code handles 7, in which the fixing screws 10 are fixed, are offset by 36 ° relative to each other (see figure 2). Moreover, all the grooves for fastening the connecting plates 12 with the code handles 7 therein must be strictly fixed in one position, for example, perpendicularly or parallel to the axis of the hole of one of the code handles 7. A similar result can be obtained during the manufacturing process by fixing the position of the holes of all code handles 7, for example, perpendicular or parallel to the axis of the groove of one of the code handles 7, and the axis of the subsequent grooves for fastening the connecting plates 12 with the code handles 7 to move 36 °. Since the internal and external code handles are rigidly connected by the plates 12, with a fixed position of all the axes of the holes, and therefore the mounting screws 10, changing places or turning 180 ° one or more code handles 7, the positions of the axes of the grooves for attaching the connecting plates 12 with the code handles 7 relative to each other, and therefore the position of the outer code handles 11 is a multiple of 36 °. If the axes of all the fixing screws 10 are aligned with the recessed grooves "b" of the code elements 2, and the heads of the fixing screws 10 are in the upper position, which corresponds to the lower position of the recessed groove "b" of the code element 2, then this position of the code handles corresponds to the working code and unlocked lock bolt condition. The design of the lock can be performed with a different number of code elements. Figure 1 shows, by way of example, a lock structure consisting of five code elements. It is also allowed to change the sizes of code elements in the direction of increasing or decreasing and changing the number of discrete divisions, and accordingly the number of grooves on the perimeter of the code element, made in the form of a disk. All this affects the degree of secrecy of the code lock.

The proposed version of the code lock contains 6 code elements with the number of discrete positions of each code element equal to 10, which provides 1,000,000 code combinations.

Claims (1)

Combination lock, comprising a housing, a bolt, code elements made in the form of disks rotating around their axes and fixed by spring-loaded balls, combs, a rotary disk, an asterisk, code handles, bolt handles, fixing screws, providing a code change, characterized in that:
the code elements made in the form of disks, along with the more in-depth grooves that enable the bolt to unlock, are equipped with "false grooves", which are a means of protection against unauthorized selection of the code;
the rotary disk and the sprocket rigidly connected with it are arranged for simultaneous vertical movement of the combs and reciprocating movement of the bolt when all the teeth of the combs coincide with the recessed grooves of the code elements;
the holes in the axes of the internal code handles are offset relative to each other by 36 °, which makes it easy to change the code by turning one or more handles 180 ° or swapping one or more handles, while if the mounting screws are in a vertical position coaxially with the recessed grooves , and the screw head in the upper position - the bolt is unlocked;
the lock is capable of locking doors not only from the outside, but also from the inside.

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