RU2461692C2 - Tamper-resistant lock - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: lock comprises a boxy casing, figure plates equipped with an appropriate part, which is suitable for detachable engagement with an appropriate section of a rack, which may carry out reciprocal motion and carries at least one bolt on its free end, besides, plates may execute vertical reciprocal motion by action of a key, at the same time at least one of the plates comprises at least one section equipped with at least one seat, which is aligned relative to at least one nearest ledge, besides, at least one plate equipped with at least one seat may oscillate around a guide finger rigidly joined with a boxy casing, for mutual engagement of at least one seat with an according at least one ledge, differing by the fact that it comprises elastic facilities arranged between a fixed stop and a section, which is located near the seat, for elastic feed of at least one plate into the second configuration for mutual separation and absence of interaction between the seat and the specified ledge. Elastic facilities are formed with an axial spring, which is installed inside an element, which is rigidly joined with a boxy casing, besides, the end of the spring that rests against the section is located near the seat of at least one plate, besides, the element rigidly connected with the boxy casing suitable for location of an axial spring also comprises a ledge.

EFFECT: higher resistance to tampering.

4 cl, 4 dwg

Description

Technical field

The present invention relates to a tamper-resistant lock, in particular of the type that can be manipulated with double-bit keys.

Prior art

The locks associated with the double-barred keys consist of a main box body provided with a socket (which is located essentially in the transverse direction) suitable for inserting the key.

The key, being inserted, is positioned so that its code part is aligned with the set of code plates (usually called suvalres) that can perform partial translational motion along given directions.

The rotation of the key in the well causes the movement of the plates (suvalr), which is consistent with the release of the rack (which in the normal position engages with the plates); such a rail, thus, can carry out translational motion by the rotational movement of the key in the well.

The bolts are firmly connected to the front of the rail: the forward movement of the rail causes the bolts to extend from the end of the lock, followed by stable meshing of the bolts in the slots of the jamb, ensuring the correct closure of the door in which the lock is installed.

This type of lock provides a good level of protection against hacking actions of a destructive type, since the substantial dimensions allow variants of the armored type.

However, this type of lock is prone to tampering with a type commonly known as breaking the lock.

These methods include the use of special tools that are inserted into the hole designed to insert the key: using these tools, by holding the staff with a load in the direction that corresponds to the retraction of the bolts, the cracker can individually lift the plates until the staff is released this is retracted due to the applied mechanical load.

Although these hacking methods are quite complex, they have a clearly high success rate and therefore make all double-beaded key locks essentially unreliable.

A tamper-resistant lock is known, for example, from EP 0903455 A, which discloses a lock corresponding to the restrictive part of claim 1.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a lock resistant to breaking, which is equipped with means adapted to withstand any breaking actions that are known in the field of opening locks.

For this purpose, an object of the present invention is to provide a tamper-resistant double-bit key lock that can be recoded and equipped with a means of counteracting any tampering known in the field of opening locks, as well as obtaining a tamper-resistant lock, which has a low price, is relatively simple to obtain and reliable in use.

This goal and these objects, as well as other objects and goals that will become more apparent in the future, are achieved with the help of a real tamper-resistant lock containing a box-shaped housing for arranging a plurality of figured plates equipped with a corresponding part that is suitable for uncoupling with the corresponding section rail, which can carry forward movement and carries at its free end, at least one deadbolt, which can be retracted as a whole with the specified rail, and the plate able to carry out vertical translational movement through the action of the key and to release, when they are raised, the translational movement of the rack and bolts to retract and extend, while at least one of the plates contains at least one section provided with at least , one socket, which is aligned with at least one proximal protrusion, which is configured essentially in accordance with the configuration of the specified socket, and at least one plate provided with at least e, with one socket, is able to oscillate around a guide pin, rigidly connected to the box-shaped body, from the first configuration for mutual engagement of at least one socket with a corresponding at least one protrusion, as a result of external cracking actions aimed at retracting slats and deadbolts, in which the translational movement of the plates is not allowed, and, thus, the rail is blocked, to the second, inactive configuration, in which the socket and protrusion are separated from each other, and the translational movement of the plates can t can be carried out freely, and thus, the rail can be extended and retracted, and the lock contains elastic means that are located between the fixed stop and the area that is near the socket, for elastic supply of at least one plate into the second configuration for mutual separation and the lack of interaction between the socket and the specified protrusion, while the elastic means are formed by an axial spring, which is located inside the element, which is rigidly connected to the box-shaped body, and the end of the spring, which abuts against the area, is located near the nest of at least one plate, and the element, rigidly connected to the box-shaped housing, adapted to locate the axial spring, also contains a protrusion.

Preferably, the plates comprise at least one corresponding guide slot in which a pin is located which is rigidly connected to the box body.

Preferably, two slots are provided, and each of them is adapted to accommodate a corresponding fixed finger and is oriented so that it allows translational movement of the plates along a substantially vertical direction, freeing the rail.

Preferably, one of the slots is wider than the width of the finger that is located in it, while the other slot has a shape and dimensions that correspond to the shape and dimensions of the corresponding finger, while retracting the rail is consistent with the rotation of the plate around the finger, tightly inserted into the slot, and subsequent movement of the wider slot until interaction with the corresponding finger takes place, moreover, the rotation of the plate until the edge of the wider slot abuts against the corresponding finger corresponds to the first configuration for mutual engagement of at least one socket with the corresponding at least one protrusion.

Preferably, each of said plates is constituted by a main plate, which is provided with at least one socket for a protrusion, and a strip, the plate and strip facing each other and provided with teeth for mutual engagement according to a variety of configurations to enable recoding of the lock.

Brief Description of the Drawings

Other characteristics and advantages of the invention will become more apparent from the following detailed description of a preferred but not exclusive embodiment of a tamper-resistant lock, shown for a non-limiting example in the accompanying drawings, in which:

figure 1 is a perspective view with a partial cross-section of the castle according to the invention in an inactive configuration;

figure 2 is an enlarged view of a detail of a perspective view shown in figure 1;

figure 3 is a perspective view with a partial cross-section of the lock according to the invention in a burglar resistant locked configuration;

figure 4 is an enlarged view of a detail of a perspective view shown in figure 3.

MODES FOR CARRYING OUT THE INVENTION

In the drawings, reference numeral 1 denotes a generally tamper-resistant lock.

The lock 1 comprises a box-shaped housing 2 for arranging a plurality of figured plates 3 provided with a corresponding part (not shown in the figure), which is adapted for disengaging engagement with the corresponding section of the rack 4, which can translate and carries at least 5 at its free end , one bolt 6, which can be retracted as a unit with rail 4.

As shown in the embodiment shown in the accompanying drawings, rail 4 carries (at its end 5) four mutually parallel bolts 6.

The plates 3 can carry out vertical translational motion due to the action of the key (not shown in the drawings) and are adapted when they are raised to stop the translational movement of the rack 4 and, accordingly, the bolts 6 for their retraction and extension.

At least one of the plates 3 contains at least one deadbolt 7, provided with at least one socket 8, which is aligned with at least one protrusion 9, which is formed essentially in accordance with the socket 8.

At least one plate 3, provided with at least one socket 8, can oscillate around a guide pin 10, rigidly connected to the box-shaped body 2.

In practice, oscillatory movement is possible between two extreme positions determined by the geometry of the design of the lock 1. This movement is actually possible from the first configuration for mutual engagement of at least one socket 8 with the corresponding at least one protrusion 9, as a result of external actions hacking with the intention of forcing the retraction of the rack 4 and retraction of the tongues 6 (the situation shown in figure 4), to a second, inactive configuration, in which the socket 8 and the protrusion 9 are separated from each other, and The positive movement of the plates 3 is carried out freely, and thus, the rail 4 can be extended and retracted (the situation shown in FIG. 2).

For the first configuration (the situation shown in Fig. 4), it should be noted that the translational movement of the plates 3 is not possible, and therefore the rail 4 is locked: in reality, this situation is that it provides protection against tampering, such as breaking the castle.

Using an appropriate tool, the cracker actually holds the rail 4 under load in such a way as to cause it to be retracted, and with the help of a second tool it lifts the plates 3 stacked on top of one another until the rail 4 is completely released and thus free for the implementation of the reverse translational movement, causing the retraction of the bolts 6.

The locking of at least one plate 3, produced by stable engagement of the socket 8 of part 7 with a fixed protrusion 9 (which occurs in fact in the case of external forces that correspond to the movements of the rack 4 in the direction of its retraction), makes it impossible to translate the plates 3 by the action of the second cracking tool. Thus, in practice, any translational movement of the plates 3 is impossible whenever the retraction of the bolts 6 (and thus the rails 4) is forced, since this action causes the protrusion 9 to engage in the corresponding socket 8.

The plates 3 contain at least one corresponding guide slot 11, into which a finger 10 is inserted, which is rigidly connected to the box-shaped body 2: in practice, the finger 10 constitutes the center of rotation of each plate 3 for each break-in attempt corresponding to an attempt to force the rail 4 to be retracted Hasp 6.

According to an embodiment, for achieving practical and purpose-related purposes, there are two slots (slot 11, which has already been mentioned, and a second, upper slot 12), each of which is adapted to position a corresponding fixed finger (first finger 10, already mentioned, and second finger 13) and is oriented so as to allow translational movement of the plates 3 along a substantially vertical direction to release the rack 4.

The slot 12 is wider than the finger 13, which is inserted into it.

The slot 11, in contrast, has shapes and sizes that correspond to the shapes and sizes of the corresponding finger 10.

The retraction of the rail 4 (caused, for example, by an attempt to break the lock) is consistent with the rotation of the plate 3 (or plates 3) around the finger 10, tightly inserted into the slot 11, and the subsequent movement of the wider slot 12, until there is an interaction with the corresponding finger 13 .

The rotation of the plate 3 (or plates 3) until it stops against the edge of the wider slot 12 in the corresponding pin 13 corresponds to the first configuration for mutual engagement of at least one socket 8 with the corresponding protrusion 9.

It should be noted that to ensure the optimal location of all the components that make it up, the lock 1 contains elastic means 14, which are located between the fixed stop and the section 15, which is closest to the socket 8, for elastic supply of at least one plate 3 in the second configuration for mutual separation and elimination of interaction between the socket 8 and the protrusion 9 and for the stable preservation of the specified configuration, until there is an external mechanical interaction.

According to the invention, the elastic means 14 are formed by an axial spring, which is located inside the element 16, which is rigidly connected to the box-shaped body 2.

The free end of the spring abuts against a portion 15, which is located near the socket 8 of at least one plate 3.

In the case shown in the attached figures, a plurality of sockets 8 are used, and they are mutually sequential, making up a kind of set of teeth.

To simplify the design and assembly of the lock 1, corresponding to the invention, the element 16, rigidly connected to the box-shaped body 2 and adapted to accommodate the axial spring (elastic means 14), also contains a protrusion 9: it is simply a wedge-shaped protrusion that departs from the lower end of the element to part 7 of the plate 3, which is facing him.

Immediately each plate 3 is composed of a main plate, which is provided with at least one socket 8 for the location of the protrusion 9, and a strip.

The main plate and the strip facing each other and provided with teeth for mutual engagement according to many configurations to enable recoding of the lock 1.

This constructive choice allows even double-bitlock type locks to be obtained that can be re-encoded and equipped with means to prevent breaking the lock.

Thus, it is shown that the invention achieves the proposed goals and objects.

The invention conceived in this way allows many modifications and changes that are included in the scope of the attached claims.

All parts can also be replaced with other technically equivalent parts.

In the exemplary embodiments shown, the individual characteristics given for specific examples may in fact be replaced by other characteristics that exist in other exemplary embodiments.

In practice, the materials used, as well as the shapes and sizes, can be any according to the needs, thus, without giving up the scope of protection, which is determined by the attached claims.

Claims (5)

1. A burglar-resistant lock comprising a box-shaped case (2) for arranging a plurality of figured plates (3) provided with a corresponding part that is suitable for disengaged engagement with a corresponding portion of the rail (4), which can translate and carries on its free end (5) at least one deadbolt (6), which can be retracted as a unit with said rail (4), and the plates (3) are capable of vertical translational movement by means of a key and release when they are under yaty, translational movement of the rails (4) and bolts (6) for their retraction and extension, while at least one of the plates (3) contains at least one section (7), provided with at least one socket (8), which is aligned with at least one proximal protrusion (9), which is configured essentially in accordance with the configuration of the specified socket (8), and at least one plate (3) provided at least one socket (8), is able to oscillate around a guide pin (10), rigidly connected to the cor casing (2), from the first configuration for mutual engagement of at least one socket (8) with the corresponding at least one protrusion (9), as a result of external cracking actions aimed at retracting the rail (4) and deadbolt (6), in which the translational movement of the plates (3) is not allowed, and thus the rail (4) is blocked, to a second, inactive configuration, in which the socket (8) and the protrusion (9) are separated from each other, and the translational movement plates (3) can be carried out freely, and thus the rail (4) can be extended beyond move, characterized in that it contains elastic means (14), which are located between the fixed stop and the section (15), which is located near the socket (8), for elastic supply of at least one plate (3) in the second configuration for mutual separation and lack of interaction between the socket (8) and the specified protrusion (9), while the elastic means (14) are formed by an axial spring, which is located inside the element (16), which is rigidly connected to the box-shaped housing (2), and the end of the spring, which abuts against section (7), is near the slot (8), at least one plate (3), wherein the element (16) rigidly coupled to the box body (2) adapted for axial spring arrangement, also comprises a projection (9). 2. The lock according to claim 1, characterized in that the plates (3) contain at least one corresponding guide slot (11), in which a finger (10) is located, rigidly connected to the box-shaped body (3). 3. The lock according to claim 2, characterized in that the slots (11, 12) are two, and each is adapted to accommodate a corresponding fixed finger (10, 13) and is oriented so that it allows translational movement of the plates (3) along essentially , vertical direction, freeing the rail (4). 4. The lock according to claim 3, characterized in that one of the slots (12) is wider than the width of the finger (13), which is located in it, while the other slot (11) has a shape and dimensions that correspond to the shape and dimensions of the corresponding finger (10), while retracting the rail (4) is consistent with the rotation of the plate (3) around the finger (10), firmly inserted into the slot (11), and the subsequent movement of the wider slot (12), until there is an interaction with the corresponding finger (13), moreover, the rotation of the plate (3), until the edge of the wider slot (12) abuts against the finger (13) corresponds to the first configuration for mutual engagement of at least one socket (8) with the corresponding at least one protrusion (9). 5. The lock according to any one of the preceding paragraphs, characterized in that each of these plates (3) is composed of a main plate, which is provided with at least one socket (8) for the protrusion (9), and a strip, the plate and strip facing to each other and equipped with teeth for mutual engagement according to a variety of configurations to enable recoding of the lock (1).

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