RU2629860C1 - Protective pad for lever tumbler lock - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: protective pad for a lever tumbler lock comprises a housing 1 with a keyhole 2 for a lever key, a rotary element 4 located in the housing, with a through opening 5 for the passage of the lever key bits. The housing 1 is provided on the front surface with an additional opening 6 for accommodating a key rod therein, connected to the keyhole 2, the rotary element 4 is made in the form of a drum having the possibility of swinging motion around its own axis, and the opening 5 is arranged in the drum 4 so that in one position it has the ablity to coincide with the keyhole 2 for the lever key, when the drum is swinging, and in another position it has the possibility to provide the key rod accommodation in the additional opening 6.

EFFECT: increased protection.

3 cl, 4 dwg

Description

The invention relates to devices for closing keyholes of level locks and can be widely used to prevent unauthorized probing of the lock code.

A device for closing a keyhole, comprising a base, a shutter with a hole and a groove, means for fixing the shutter against movement during unauthorized unlocking, and a magnetic key carrying code magnets for interacting with blocking elements of the shutter fixation means, RF patent 2093651, E05B 17/18.

Known technical solution has low reliability, because involves the use of a magnetic key and magnets, which are demagnetized over time under the influence of a large number of factors.

Known is a protective pad for a level lock having a body in the cavity of which rollers are mounted spring-loaded in the direction one to the other, the body having means for securing it to the door leaf and a safety strip mounted on the body covering the body cavity, both the body and the safety the bar has coaxial key wells, and the rollers are parallel to at least one key well., see RF patent 2385401. The rollers overlap the key well.

Similar solutions are disclosed in RU 2584668 C1 and 147464 U1.

However, these solutions have such a disadvantage as insufficient security of the secret lock mechanism from probing. Knowing how well-known devices work, you can open the “secret” part by opening the “curtains”.

A protective pad for a level lock is known, comprising a body with a hole for a level key, a rotary element located in the body with a through hole for passing the keys of the level key, see RF patent 2132436 C1. The rotary element is rotated with the key to the keyhole of the lock. Thus, the security of the castle from probing is increased.

However, the known pad is not universal. The pad from one lock cannot be applied on another lock due to its design features. Moreover, it is difficult to manufacture due to the need for accurate positioning of the curved groove in the rotary element and the keyhole, otherwise the key will not get into the lock.

The technical result consists in creating a pad lock, simple in design and universal for most of the known level locks.

This technical result is ensured by the fact that the protective pad for the level lock contains a body with a hole for a level key, a rotary element located in the body with a through hole for the passage of the beard of a level key. The casing from the front surface is provided with an additional hole for placing the key rod in it, connected to the well, the rotary element is made in the form of a possibility of rocking movement around its axis of the drum, and the hole is placed in the drum 4 so that it can coincide when the drum is swinging in one position with a hole for a lever key, and in another position has the ability to ensure the placement of the key rod in an additional hole.

The lining body is located in the body cup.

The drum is spring loaded.

The invention is illustrated by drawings, which depict:

FIG. 1 - a protective pad for a level lock, isometric view;

FIG. 2 - overlay protective for level lock, general view;

FIG. 3 is a section AA in FIG. 2, the first position of the drum;

FIG. 4 is a section AA in FIG. 2, the second position of the drum.

The protective pad for the level lock contains a housing 1 with a hole 2 for a level key. The housing 1 is located in the cup 3 of the housing. In the housing there is a rotary element in the form of a drum 4 with a through hole 5 for the passage of the barbs of a level wrench. The housing 1 from the front surface is equipped with an additional hole 6 for accommodating the key rod in it, connected to the bore 2. The drum 4 is made with the possibility of swinging movement around its axis 7, and the hole 5 is placed in the drum 4 so that it is able to swing the drum in one the position coincides with the borehole 2 under the lever key, and in another position it is possible to ensure the placement of the key rod in the additional hole 6. There is a stop 8, and the drum 4 is spring loaded.

Lining work

The protective cover is installed on the outside of the door on the axis of entry of the key with barbs of a level lock.

The key is inserted into the well 2 of the housing 1 of the protective pad. Then they push the key inside the protective cover and enter the hole 5 of the drum 4 with the key. As soon as the secret part of the key (beard) completely enters the drum 4, the key will rest against the stop 8.

Next, the drum 4 is turned with the key until the key stem enters the additional hole 6. At the same time, the key comes out of contact with the stop 8 and it is possible to push the key with the beards deeper into the door and, thus, enter it into the well of the level lock.

As soon as the key rod enters the additional hole 6, the drum 4 with its body blocks the hole 2 in the housing 1 and it is no longer possible to use the master keys to open the lock.

Open or close the lock.

We take out the key in the reverse order.

As soon as the secret part of the key enters the drum and abuts against the inside of the housing 1, it becomes possible to turn the drum 4 with the key. Turn the drum 4 with the key until the holes 5 in the drum 4 and the holes 2 in the case 1 are aligned, after which the key is removed from the drum 4 and the case one.

Claims (3)

1. A protective pad for a level lock, comprising a housing 1 with a hole 2 for a lever key, a rotary element 4 located in the housing with a through hole 5 for passage of the levers of a lever key, characterized in that the housing 1 with the front surface is provided with an additional rod the key hole 6, connected to the borehole 2, the rotary element 4 is made in the form of having the possibility of rocking movement around its axis of the drum, and the hole 5 is placed in the drum 4 so that it is able to swing the drum and coincide in one position with the well 2 under the key lever and the other position is able to provide key stem placement in an additional opening 6. 2. The protective pad for the level lock according to claim 1, characterized in that the housing 1 is located in the cup 3 of the housing. 3. The protective pad for the level lock according to claim 1 or 2, characterized in that the drum 4 is spring-loaded.

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