RU2560917C2 - Safety lock with locking plates, in particular, for armoured doors - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: safety lock (1) with locking plates (7), in particular, for armoured doors, comprises a system against break-in, including moving facilities, which may automatically move at least one locking plate (7) into the position of maximum lift, when at least one locking plate (7) is exposed to a blocking force in direction of crossbar (5) retraction.

EFFECT: improved design.

6 cl, 3 dwg

Description

The present invention relates to a security lock with locking strips (in jargon also called levers or hooks) for use in general in doors, gates, safes, etc.

As you know, one of the most important tasks facing manufacturers of security locks is to counteract and make ineffective hacking systems that can be invented to gain illegal access to a protected room.

There is one system for breaking a security lock with locking plates, in which special tools are used: while the force opposite the direction of the bolt exit is applied to the locking plates to block them, the cracker acts on the locking plates to deactivate the locking order.

An object of the present invention is to provide a security lock with locking plates having an extremely effective anti-tamper system.

In particular, in the context of this task, one important objective of the invention is to obtain a security lock with locking plates, equipped with an anti-burglary system, which, being extremely effective, does not entail complications of the lock, leaves its overall dimensions unchanged and does not affect, or has a minimal impact on the method of its manufacture in order to avoid a noticeable increase in production costs. The technical problem is solved, and these and other goals are achieved according to the present invention with a security lock with locking plates, in particular for armored doors, characterized in that it has an anti-burglary system including moving means capable of automatically moving at least one locking plate into maximum lift position when this at least one locking plate is subjected to a blocking force in the direction of retraction of the bolt.

The moving means preferably act to move said at least one locking plate when it is in the lifting position next to said maximum lifting position. The driving means preferably comprise at least one locking element on said at least one locking plate, which stops the movement in the lifting direction of at least one said locking plate, which is capable of interacting with a fixed intercepting element of said lock.

Preferably, in the maximum lift position of said at least one locking plate, the displacement initiating element and said intercepting element are aligned in an inactive configuration in which interaction is ineffective with respect to movement in the lifting direction of said at least one locking plate.

Preferably, in at least one lifting position next to said maximum lifting of said at least one locking plate, the movement initiating element and the intercepting element are partially biased in an active configuration in which the interaction is effective with respect to movement in the lifting direction of said at least one locking plate plates.

In one preferred embodiment of the invention, said locking element comprises at least one cam profile on the profile of at least one slot in said at least one locking plate, and said fixed catch element includes at least one driving pin with which said slot is sliding engages to lift said at least one locking plate. In such a case, preferably, said cam profile is connected to the profile of said drive pin.

Preferably, in particular, said cam profile has an arc shape and said drive pin has a cylinder shape. Other characteristics and advantages of the present invention will become apparent from the description of the preferred, but not exclusive embodiment of the security lock with locking plates, in particular for the armored doors according to the invention, shown as an illustrative and non-restrictive example in the accompanying drawings, in which:

Figure 1 is a vertical side view of a security lock with locking plates in the lowered position;

Figure 2 is a vertical side view of the security lock of Figure 1 with locking plates in a position close to the maximum lift position, in which the element initiating the movement and the intercepting element are in the active configuration in which they are partially offset; and

Figure 3 is a vertical side view of the security lock of Figure 1 with locking plates in the maximum lift position, in which the element initiating movement and the intercepting element are in the inactive configuration in which they are aligned.

With reference to the aforementioned drawings, the security lock with locking plates is shown in its entirety with the designated reference number 1. The lock 1 has a rigid box case 3 (one of the two cover plates has been removed from it for greater clarity), inside of which are shown a bolt 4 and a bolt 5, which are kinematically connected.

The cover plates of the box-shaped case 3 have a key entry hole, by which the lock 1 is actuated.

The bolt 5 is supported by a support plate 6, which moves horizontally between the retracted position of the bolt 5 inside the box-shaped case 3 when the lock is opened and the extended position when the lock is closed 1. The bolt 4 moves horizontally between the retracted position in the box-shaped case 3 when the lock is opened and the extended position when closing the lock. To move the bolt 4 there is a lever 11 for stopping the bolt 4, which rotates at point 12 of the box-shaped case 3; there is also a mechanism for transmitting movement from the key to the stop lever 11.

A set of locking plates or hooks 7 is placed on top of the support plate 6, each of which moves vertically and progressively and has a window 8 with teeth defining cutouts for passage 9 corresponding to the configuration of the lock key 1. Each locking plate 7 has a first vertical slot 14 and a second vertical slot 15 offset in the direction of extension and retraction of the bolt 5. In the first vertical slot 14, the first drive pin 16 is attached to the box body 3, and in the second vertical slot 15, the second drive pin 17 also when attached to the box case 3.

The driving pins 16 and 17, respectively, which connect the slots 14 and 15, respectively, of all the locking plates 7, are, in particular, cylinders, the axis of which is oriented at right angles to the covering plates of the box body 3.

A locking element 10 or Mentonnet located inside the windows 8 is attached to the support plate 6 of the crossbar 5.

The key of the lock 1 activates the locking plates 7, leading to the coincidence of the teeth of the windows 8 to open the passage into which the locking element 10 may enter. The foregoing relates generally to a conventional security lock with locking plates.

The drawings show other structural details of the castle, which are not described here, since they are well known.

The most important, highly innovative aspect of lock 1 is instead represented by an anti-burglary system that includes moving means capable of automatically moving at least one and, in particular, all of the locking plates to the maximum lift position, when they are subjected to a locking force in the pulling direction crossbar 5.

More specifically, the driving means actively move the locking plates 7 when they are in the lifting position next to the maximum lifting position.

For each locking plate 7, the driving means has a locking element on the locking plate 7, preventing the locking plate 7 from moving in the rising direction, capable of interacting with the fixed locking element of the lock 1.

Preferably, in the maximum lift position of each locking plate 7, the movement initiating element and the interceptor are aligned in an inactive configuration in which the interaction is ineffective with respect to movement in the lift direction of the locking plate 7. In addition, in the lift position next to the maximum lift position of each lock plate 7, the element that starts moving and the intercepting element are partially offset in the active configuration, in which the interaction is effective in relation to movement towards the lifting direction of the locking plate 7 itself.

The locking element, in particular, has a cam profile 18, obtained along the profile of the first slot 14, and a fixed intercepting element is formed by the first driving pin 16.

The cam profile 18 coincides with the profile of the first driving pin 16 and, in particular, has an arc shape with a bending radius corresponding to the radius of the first driving pin 16.

The anti-hacking system of the present invention prevents the encoding of the locking plates 7 from being reproduced, operating as follows. When unauthorized decoding of the locking plates 7 by a rather complicated technique, a special rough key is used that repeatedly touches the locking plates 7 to obtain their exact coding, while the locking plates 7 are appropriately blocked by the force exerted each time in the direction opposite to the extension direction of the bolt 5. When the first attempt is the touch of the locking plates 7, which are in the position of maximum lift. When interacting with a special rough key with the locking plates 7 in the maximum lifting position, this determines the first common coding that does not fully reproduce the coding of the locking plates 7.

The second attempt is made with those locking plates 7 that were previously partially decoded and which no longer occupy the position of maximum lift, but are now in a position next to that position of maximum lift, in which the corresponding cam profile 18 at this point is not aligned, but partially offset from the driving pin 16. When, already during the second attempt, the blocking force acts in the opposite direction to the extension direction of the bolt 5, in an attempt to touch the encoding of the locking plate 7 again, the locking plates 7, already partially decoded, are moved to the maximum lift position, their cam profile 18 being now in the active configuration with respect to the drive pin 16, in which the interaction is effective with respect to movement in the lift direction. Partially decoded locking plates 7 when moving away from a special rough key that cannot touch them to complete their decoding.

The invention may have numerous variations that all fall within the scope of the claims.

In particular, the motive means may be of any suitable type to automatically raise one or more locking plates to the maximum lift position when they are subjected to a blocking force in the direction of retraction of the bolt.

In practice, the materials used, as well as the size, can be of any type in accordance with the need and current level of technology.

Claims (6)

1. Security lock (1) with locking plates (7), in particular for armored doors,
characterized in that it has an anti-burglary system comprising driving means capable of automatically moving at least one locking plate (7) to the maximum lifting position when at least one locking plate (7) is subjected to a blocking force in the direction of retraction of the bolt (5 ),
moreover, the said moving means have at least one locking plate (7) at least one locking element, preventing movement in the direction of rise of the said at least one locking plate (7) and capable of interacting with a fixed intercepting element of the said lock,
said locking element having at least one cam profile (18) along the profile of at least one slot (14) of at least one locking plate (7) and said fixed intercepting element has at least a driving pin (16) with which said slot is in sliding engagement for lifting said at least one locking plate (7). 2. Security lock (1) with locking plates, in particular for armored doors according to claim 1, characterized in that said driving means actively move said at least one locking plate (7) when it is in the lifting position next to said position of maximum lift. 3. A security lock (1) with locking plates, in particular for armored doors according to claim 1, characterized in that in the maximum lifting position of said at least one locking plate (7), said moving element and said intercepting element aligned in an inactive configuration in which the interaction between them is ineffective with respect to movement in the direction of rise of said at least one locking plate (7). 4. Security lock (1) with locking plates, in particular for armored doors according to claim 1, characterized in that said element, at least in the lifting position next to said maximum lifting of said at least one locking plate (7), starting movement, and said intercepting element is partially biased in the active configuration in which the interaction between them is effective with respect to movement in the lifting direction of said at least one locking plate (7). 5. Security lock (1) with locking plates, in particular for armored doors according to claim 1, characterized in that said cam profile (18) coincides with the profile of said driving pin (16). 6. Security lock (1) with locking plates, in particular for armored doors according to any one of paragraphs. 1 or 5, characterized in that said cam profile (18) has an arc shape and said drive pin (16) has a cylinder shape.

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