RU2683925C1 - Burglar-resistant lock - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to finish hardware intended for closing doors. Anti-burglar lock comprises a body, a cross-beam arranged in it, arranged on a crossbar plate equipped with a comb and a post, a spring-loaded relative to the body, each of which has stepped slot for arrangement of crossbar post and slots for vertical movement along guides. Said side surface facing the crossbar is provided with protrusion or projections interacting with tail surface of cross bar.

EFFECT: invention is aimed at improving burglar resistance in unauthorized burglary by drilling a crossbar post or beating a latch bolt inside the lock housing.

4 cl, 3 dwg

Description

The invention described in the application relates to hardware intended for closing doors.

A similar lock is known, comprising a housing with working pins fixed on it, an upper and lower link, a bolt with a comb and fingers attached to it, an upper square pin and a lower pin interacting with inclined slots of the upper and lower links, a set of spring-loaded coils mounted on crossbar and interacting with the upper pin of the square cross-section of the crossbar and with the working pins of the housing, and in the housing there is a key slot with a central hole for the key shaft and tangential to it and under the barbs of the key, with the first and second working pins having bases, a thickening is made on the first working pin, guide slots are made in the upper and lower link body interacting with the working pins, the bolt is a body symmetrical with respect to the key slot, with guide slots, interacting with the working pins, (see RF patent 2043713 IPC А01К 29/00, Е05В 19/06, Е05В 21/00, Е05В 63/00 published on September 20, 1995).

The disadvantage of the analogue is weak anti-burglary. A square cross-section pin interacting with spring-loaded tsugalami can be drilled or broken by clogging the bolts of the bolt inside the lock case.

A similar lock is known that contains a crossbar with a guide post fixed on it and levers mounted to interact with the guide post and the key, the guide post being made more hard on the side of the end not connected to the crossbar and has an insert with a convex free surface at this end, made of a material of greater hardness than the material of the guide rack (see RF patent 2117127 IPC EV 05/21, EV 05/16 published on 08/10/1998).

The disadvantage of this device is its weak anti-burglary from drilling guide racks. The presence of a ball of greater hardness than the material of the stand does not protect against drilling. In order not to drill a hard ball, drilling is carried out at an angle to the attachment point of the guide rack with the bolt, or they simply simply hammer the bolt inside the lock case.

A similar lock is known, comprising a casing, a crossbar with a stand located in it, spring-loaded relative to the casing of the levers, each of which has a step groove symmetrical with respect to the horizontal axis to accommodate the crossbar strut and is made of two parts connected by a flat spring, and a key with a beard moreover, the plane of the connector suvald passes along the axis of the groove, each suvald is equipped with an additional flat spring for connecting its parts, while the flat springs are located at the ends of the groove and fastened at their ends at the edges of the parts to be joined, and the compression force of the springs connecting the parts of the suvald is 2 3 times greater than the compression force of the springs of the suvald (see RF patent 2049893 IPC 25/00 published December 10, 1995).

The disadvantage of the analogue is weak burglary. You can of course press the ball from the ball bearing into the end of the crossbar post, but drilling at an angle, bypassing the ball, to the fastening point of the crossbar post with the crossbar itself, makes it easy to open the lock. In addition, you can hammer the bolt inside the lock case, while breaking the bolt rack.

The closest device of the same purpose to the claimed invention in terms of features is a high-security lock containing a case with a key guide, a bolt bracket with bolts and a locking stand, a bolt lock tool comprising a set of spring-loaded levers with code ledges made in two groups with different combinations in height, formed by notches for interaction with the locking rack, and a double-chisel key, moreover, it has additional racks, one of which is rectangular a different shape with two rows of symmetrically arranged slots for spring-loaded levers is perpendicular to the body and rigidly mounted on it, the other is located on the same horizontal axis with a locking stand on the bolt bracket on the bolt side to orient the levers relative to the body, and the bolt bracket on the side of the key guide made in the form of a rack with holes, a set of levers mounted on the other side of the crossbar is symmetrical with the main set, both sets of levers installed with the possibility of uniform movement, and each of the levers is made in the form of a T-shaped plate, the upper part of which is provided on one side with a square protrusion and a rectangular stepped rod, the latter being located above the code protrusion, and the lower part has a figured profile, with a square protrusion and the protrusion at the T-shaped plate is provided with guide grooves for moving the levers, and each stepped shaft of the levers is shifted relative to the other by one code ledge, and the lower the stump of the extreme rods of the suvald has an opposite directional deflection and beetles on their inner surfaces, while the locking stand is equipped with metal balls pressed on both sides, and the levers are spring-loaded using coil springs (see invention of the Russian Federation No. 2155846 MKI E05B 25/02, EB05 9/06 published on 10, 09, 2000 Bulletin No. 25 selected as a prototype).

The disadvantage of the prototype is that the castle has a weak anti-burglary. The crossbar staple stand can be drilled at an angle without touching the pressed balls, or the crossbar can be hammered inside the lock case, while breaking the crossbar staple.

The technical result is an increase in burglar resistance of the device.

The specified technical result is achieved in that the lock containing the housing, the bolt located in it, placed on the bolt plate equipped with a comb and a stand, spring-loaded relative to the body of the levers, each of which has a step groove for accommodating the bolt plate rack and grooves for vertical movement along the guides the peculiarity lies in the fact that the side surface of the suvald facing the crossbar is equipped with a protrusion or protrusions interacting with the crossbar.

Additionally, the anti-burglary lock is characterized by the fact that a permanent magnet is located in the housing, which interacts with the bolt plate in the open state of the lock.

Additionally, the anti-burglary lock is characterized in that the height of the grooves for vertical movement of the levers is greater than the height of the groove to accommodate the crossbar.

Additionally, the anti-burglary lock is characterized in that the grooves for vertical movement of the levers in its upper part are wider than in the lower. The drawing is shown.

FIG. 1 - burglar-proof lock with removed housing cover and removed levers except one. The lock is equipped with a permanent magnet (according to paragraph 2 of the claims).

FIG. 2 - the position of the suvald is shown after the crossbar is drilled.

FIG. 3 is a view along AA.

The burglar-proof lock contains, a housing 1. located in it, a bolt plate 2 with a horizontal groove 3, in which a guide 4 is placed in the form of a cylinder fixed to the housing 1. In the lower part, the bolt plate 2 has a comb 5 interacting with the key bar and the strut 6, spring-loaded springs 7 relative to the casing 1 of the levers 8. The springs 7 are placed on the holders 9 of the levers 8. Moreover, the shanks of the holders 9 are placed in the rectangular holes (not shown) of the strap 10, mounted on the housing 1. Each levers 8 has a step the groove 11, which is symmetrical with respect to the horizontal axis, in which the stand 6 is placed. In addition, each levers 8 contains grooves 12 and 13 for vertical movement along the guides 4 and 14. Moreover, the height of the vertical grooves 12 and 13 is greater than the height of the groove 11 for accommodating the rack 6 of the crossbar 2 , and the grooves 12 and 13 themselves in their upper part 15 are wider than in the lower.

Each crossbar 16, 17, 18 and 19 in its tail part 20 and 21 is made with a hole 22, which is welded, forming electric rivets 23, which securely fasten the crossbar 16, 17, 18 and 19 on the crossbar 2. The lateral surface of the level 8 facing the crossbar equipped with protrusions 24, 25 interacting with the shanks 20 and 21 of the crossbar 16, 17, 18 and 19, in the last half-turn of the key in the well 26, body 2.

In order to keep the bolt plate 2 in the extreme right position, a permanent magnet 27 is fixed in the lock case, which will interact with the bolt plate 2, holding it in the far right position (see figure 1).

The device operates as follows.

The lock opens and closes with two full turns of the key. The extension of the crossbars occurs at 44 mm in increments of 11 mm, which corresponds to a turn of the key 180 °. The movement of the crossbar plate 2 is carried out by the direct engagement of the key with the comb 5. When turning the key inserted into the keyhole 26 in a certain position, it acts with a beard with cut secrets on the figured profile of a set of spring-loaded levers 8, moving them perpendicular to the crossbar. The levers 8 release the stand 6, and it moves along the stepped groove 11. The lock closes. Unlocking the lock is similar to locking, but in the reverse order. In the last half-turn of the key, the stops 24, 25 will be placed clearly between the shanks 20, 21 of the crossbars 16, 17, 18 and 19, the lock will open. The design of the lock requires unlocking and locking the door from both the inside and the outside with a key (which eliminates unauthorized exit from the apartment).

The operation of the lock in case of unauthorized breaking, for example, by driving a deadbolt inside the lock, leading to breaking of the rack 6.

Since all the leveling plates are kept on the stand 6, in the absence of the leveling plates 8 under the influence of their weight and springs 7, they will go down to the upper edge of the guides 4, 14. At the same time, the keyhole 26 is blocked by the leveling plates 8. In addition, the shanks of the holders 9 will fall out of the holes of the bar 10. Since the grooves 12 and 13 are wider in their upper part than in the lower part, it will be extremely difficult to push the shanks of the holders 9 into the holes of the bar 10 through the keyhole 27. The stops 24, 25 will be placed clearly against the shanks 20, 21 of the crossbars 16, 17, 18 and 19 (see Figure 2). It becomes impossible to hammer the bolt inside the lock on the last 11 mm. The crossbar rests on the stops 24, 25, the level plates 8, which in turn abut against the reinforced guides 4, 14. If the guides 4 and 14 are broken, the level plates will abut against the rear wall of the housing 1.

Thus, the above information indicates the fulfillment of the following set of conditions when using the claimed invention:

- the tool embodying the claimed invention in its implementation relates to hardware intended for closing doors.

- a tool embodying the claimed invention in its implementation, is able to ensure the achievement of the perceived by the applicant technical result.

An advantage of the invention is that the device has increased burglar resistance in case of unauthorized breaking by drilling a bolt of a bolt plate or driving a bolt into the lock case.

Therefore, the claimed invention meets the condition of "industrial applicability".

Claims (4)

1. An anti-burglar lock, comprising a housing, a bolt located therein, mounted on a bolt plate equipped with a comb and a stand, spring-loaded relative to the levers body, each of which has a stepped groove for accommodating the bolt plate rack and grooves for vertical movement along the guides, characterized in that the side surface of the suvald facing the crossbar is provided with a protrusion or protrusions interacting with the crossbar. 2. An anti-burglary lock according to claim 1, characterized in that a permanent magnet is placed in the housing, interacting with the bolt plate in the open state of the lock. 3. Burglar-proof lock according to claim 1, characterized in that the height of the grooves for vertical movement of the levers is greater than the height of the groove to accommodate the crossbar. 4. Burglar-proof lock according to claim 3, characterized in that the grooves for vertical movement of the levers in its upper part are wider than in the lower.

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