RU2279518C1 - Key-hole protection device - Google Patents

Abstract

FIELD: locks, particularly means adapted to block key-holes of cylinder locks to be installed in doors, safes and containers.

SUBSTANCE: device comprises body with matrix having mobile and fixed parts installed in the body. The body is also provided with guiding slot for magnetic key and slot for bar having extension and/or depression receiving. Depression and/or extension are also formed in movable matrix part to cooperate with extension and/or depression of the bar. The device does not structurally associated with lock mechanism and may be equally used to prevent unauthorized access to any separate member or part built in door surface, namely to switch, eyelet, slot, button and so on.

EFFECT: improved use properties and increased resistance to breaking-in.

2 cl, 9 dwg

Description

The invention relates to auxiliary devices for locks and can be used to protect keyholes of cylinder locks mounted on doors, safes, containers, etc.

A device for protecting a keyhole is known, comprising a plug-plate and a lock for locking its position (EP 0367000 A2, 05/09/90). The plug-plate is connected to the lock through a lock formed by external locking pins located in the plate, and internal spring-loaded pins located in front of the lock. When using a pin key, the contact planes of the external and internal pins are combined with the contact plane of the plug and the lock panel, and the plug is moved along the guides, opening or closing the keyhole.

The disadvantages of this device are due to the fact that it contains a doweled key and, accordingly, a hole for its entry, which allows it to be opened by traditional methods without breaking, and also to disable by clogging. In addition, this device is part of the design of the lock and therefore there is the possibility of preliminary selection of the key and its unauthorized opening.

The closest in technical essence with respect to the claimed object is a removable magnetomechanical device for the protection of keyholes described in patent RU 2124615 according to class. E 05 B 17/18. This device contains a removable plug with a spring-loaded clip and a matrix installed in it, having a fixed and movable spring-loaded part, a lock for fixing the position of the plug, a socket key with magnets and magnetically sensitive balls, while the casing has an annular groove and guides and blind grooves, the matrix is equipped with blind grooves, magnetically sensitive balls are placed in cylindrical cavities formed by the bases of the blind holes of the holder and the ends of the inserts with recesses, at least one of which stsentrichno and holder of a socket wrench with magnets is the possibility of autonomous rotation.

This device is extremely inconvenient to use, since it requires great skills when inserting the key into the grooves, especially in poor lighting, in addition, due to the symmetry of the key, it is necessary to constantly determine the position of the "top" "bottom" of the key. The big disadvantage of this locking device is the inconvenience and difficulties that arise when holding the plug after removing it, because in everyday life, a person’s hands are usually occupied with other objects. The same problems arise when the key is separated from the plug to open the main lock, because door keys are usually worn in a bunch. The key proposed in the known device due to its geometry and dimensions is extremely inconvenient in operation and everyday life, especially when worn in a keychain. The design complexity of both the magnetomechanical device itself and the magnetic key, which is not justified for domestic use, is also a significant drawback of the known device.

In addition, the completely open surface of the plug with a very thin outer wall of the cage is not reliable against opening using a cutting tool.

The basis of the invention is the task (technical result) to develop a protective device for keyholes that are not structurally associated with the lock mechanism, providing a technical result consisting in improving consumer properties and resistance to cracking, as well as in facilitating use and operation.

The technical result is achieved by the fact that in the keyhole protection device comprising a housing, inside which a matrix is installed, consisting of a fixed and spring-loaded moving parts, between which there is a cavity, magnetically sensitive blocking elements located in the cavity, and a key with magnets, according to the invention, the device is equipped with a valve that has at least one part protruding from the housing and a depression and / or protrusion, the device housing has a guide groove for the key and at least one a groove for the valve, and the movable part of the matrix is made with a protrusion and / or cavity corresponding to the cavity and / or protrusion on the valve, and has slots for magnetically sensitive blocking elements, the key being a plate in which the nests for magnets corresponding to the nests are made in the moving part of the matrix.

The implementation of the protective device fixed in the home simplifies its use; Simplification of the key design turns it into a keychain and makes it easier to carry, especially in conjunction with several keys. The presence in the device case of a guide groove for the key allows you to easily insert it even in the dark, including children and the elderly. The location of the matrix in the housing of the device significantly increases the resistance against breaking into the device and opening the main lock.

Also according to the invention, at least one of the protruding parts of the valve is removable.

The invention will be further described in detail in the description with reference to the accompanying drawings, in which:

figure 1 depicts a General view of the proposed device in the closed position and the key;

figure 2 is the same as in figure 1, in section;

figure 3 - the same as in figure 2, with the key;

figure 4 - the same as in figure 3, in the open position;

5 is an embodiment of the device, in the context of the key and in the closed position;

6 is the same as in figure 5, in the open position;

Fig.7 is another embodiment of the proposed device, a General view, and a key;

Fig.8 is the same as in Fig.7, with the key entered in the context;

Fig.9 is the same as in Fig.8, in the open position.

The proposed keyhole protection device comprises a housing 1 (FIGS. 1, 2), inside which a matrix is installed, consisting of a fixed part 2 and a spring-loaded spring 3 of the movable part 4, between which there is a cavity 5, as well as a valve 6 installed in the groove 7, made in the housing 1, and having a protruding from the housing 1 part 8. The valve 6 has a protrusion 9, which is included in the cavity 10, made in the movable part 4 of the matrix. In the housing 1, a turn-key guide groove 11 is made 12, equipped with magnets 13, which serve to control magnetically sensitive blocking elements 14, for example, in the form of balls that are placed in the cavity 5. Part 4 of the matrix has slots 15 into which the blocking elements 14 fall opening the keyhole 16. The magnets 13 of the key 12 are placed in the sockets 15a corresponding to the sockets 15 of the movable part 4 of the matrix. The keyhole is located on a surface that is protected from external influences, and this surface can be either under the window 17 of the housing 1, as shown in figures 1 and 2, or under the entire housing 1, as can be seen in Fig.9.

5 and 6 show an embodiment of the proposed device, in which the valve 6 has both a protrusion 9 and a depression 18, while the movable part 4 of the matrix also has simultaneously a depression 10 and a protrusion 19.

7 and 8 show another embodiment of the proposed device, in which the housing 1 has two grooves 7 and 20 for the valve 6, while the valve has two protruding from the housing 1 of the parts 8 and 21. The protruding part 21 is equipped with a stopper 22.

The device operates as follows.

In working condition, the window 17 is closed by the valve 6 (see Fig. 1, 2), closing the keyhole 16. When the key 12 is inserted along the guide groove 11 of the housing 1 in the direction indicated by arrow A (see Fig. 3), magnetically sensitive to the stop the blocking elements 14 are carried away by magnets 13 from the lower position adopted by them under the action of gravity in the cavity 5, to the position against the nests 15 on the parts of the matrix. When applying force to the protruding part 8 of the valve 6 in the direction indicated by arrow B (see FIG. 4), the protrusion 9 of the valve 6 exits the cavity 10 of the moving part 4 of the matrix, transfers force to this moving part of the matrix, forcing it to compress the spring 3 and move relative to the fixed part 2 of the matrix, allowing the valve 6 to move in the direction of arrow B and open the window 17. After opening the keyhole 16, the necessary manipulations are performed with it, and after the protrusion 9 comes out of the cavity 10, the key 12 can be removed from the groove 11 without affecting mechanism of the protective device.

To close the protected keyhole 16, it is necessary to apply force to the protruding part 8 of the valve 6 in the direction indicated by arrow B until the valve 6 closes the window 17, while the protrusion 9 of the valve 6 will enter the cavity 10 of the movable part 4 of the matrix, which will assume its original position under the action of the spring 3. At this time, the magnetically sensitive blocking elements 14 under the action of gravity will fall out of the nests 15 and will occupy the initial lower position in the cavity 5. In this position, the blocking elements 14 impede the movement of the movable part 4 of the matrix, which in turn blocks the depressions 10 and the movement of the protrusion 9 of the valve 6 in the direction of arrow B and thereby opening the window 17 and keyhole 16.

In the case of using a key with a code different from the key that is embedded in the matrix and corresponds to the location of slots 15 and 15a, at least one of the blocking elements 14 will not occupy a position against the corresponding slot 15, and the movable part 4 of the matrix will abut against it thereby prohibiting the movement of the valve 6, i.e. opening will be impossible.

When performing the device in accordance with the variant depicted in Fig.7 and 8, it works as follows.

When the key 12 is inserted along the guide groove 11 in the direction indicated by arrow A (see Fig. 8), the locking elements 14 are fully installed against the sockets 15 of the matrix part 4, allowing this movable part 4 to move relative to the stationary 2 part. Due to this, when the protruding part 8 of the valve 6 moves in the direction indicated by the arrow "B", the second protruding part 21 of the valve 6 is disengaged from the stopper 22. When the valve 6 moves, its protrusion 9 sets in motion the movable part 4 of the matrix, which compresses the spring 3. After disengagement of the protruding part 21 of the valve 6 with the movement of the protruding part 8 of the valve 6 in the direction indicated by the arrow "G" (see Fig. 9), the keyhole 16 is opened.

To close the keyhole 16, it is necessary to move the protruding part 8 of the valve 6, first in the direction opposite to the arrow "G", until it stops, then in the direction opposite to the arrow "B", until it stops. In this case, the spring 3 will return the movable part 4 of the matrix to its original position, which will allow the blocking elements 14 to return to the initial lower position in the cavity 5 under the action of gravity and block the movement of the movable part 4 of the matrix, which will prevent the valve 6 from moving, i.e. locking the protective mechanism.

The protruding part 8 or 21 of the valve 6 can be made removable.

This invention is equally used to prevent unauthorized access to any individual elements or parts of the surface, including switches, eyes, slots, buttons, and the like.

Claims (2)

1. The keyhole protection device, comprising a housing, inside which a matrix is installed, consisting of a fixed and spring-loaded moving parts, between which there is a cavity, magnetically sensitive blocking elements located in the specified cavity, and a key with magnets, characterized in that the device is equipped with a valve, which has at least one protruding part from the housing and a depression and / or protrusion, the device housing has a guide groove for the key and at least one groove for the valve, and the movable part of the matrices It is made with a protrusion and / or depression corresponding to a depression and / or protrusion on the valve and has sockets for magnetically sensitive blocking elements, the key being a plate in which there are made nests for magnets corresponding to the nests in the moving part of the matrix. 2. The device according to claim 1, characterized in that at least one protruding part of the valve is removable.

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