EA017821B1 - Selector for locks for reinforced doors and the like - Google Patents

Abstract

A selector (1) for locks for reinforced doors and the like, of the type that comprises a box-like containment body (2) which has suitable lateral openings (7) for the passage of at least one latch' and at least one bolt (8), the box-like body accommodating a plurality of substantially laminar elements which are functionally associated with a cylinder, which is actuated by a respective key, and a rotating element for the engagement of a handle, which is associated with the at least one latch by means of lever systems and is designed to move the latch, and comprising a plate (10) which performs a translational motion and is functionally associated, in an upper region, with the rotatable element and, in a lower region, with a laminar element (11), which is rigidly coupled to the bolts (8) by means of a carousel (12) which is pivoted, in another point, to the box-like body (2). The selector (1) further comprises a translational assembly (13), which can move between two extreme configurations upon selection by the user and is rigidly coupled to a plate (14) for coupling the laminar element (11) to the carousel (12), the plate (14) being functionally associated with the rotating and translatable element as a consequence of rotations of the handle in the rotating element, in the first extreme configuration of the assembly (13) the carousel (12) being pivoted to the plate (14) and being therefore rigidly coupled to the element (11) and in the second extreme configuration the carousel (12) and the plate (14) being separate and independent.

Description

FIELD OF THE INVENTION

The present invention relates to a lock for reinforced doors and the like.

BACKGROUND OF THE INVENTION

A reinforced door, usually used as an entrance door for apartments and offices, has suitable plate reinforcing elements that are designed to provide general rigidity and make it difficult to damage for breaking.

For a door of this type, it is necessary to provide components that have the same degree of protection against burglary as the door itself: the hinges will be larger than usual (to hold the door’s large weight and resist cracking), and the lock will have latches that protrude accordingly and are made with the possibility of engagement inside the corresponding edges of the door jamb, which are particularly deep and rigidly attached to the wall.

Locks of this type usually provide the actuation of the latch by means of a handle (in some cases provided only on the inside of the door, and in other cases on both sides) and latches by turning the key inside the cylinder.

For some types of installation it is not possible to use this type of lock, since the special requirements of the law require that the exit paths must have handles for emergency exit.

Known types of embodiments of the locks for reinforced doors do not provide the ability to retract the gate valves by actuating the handle (or the emergency exit bar): therefore, it should be possible to block the gate valves in the retracted configuration for the entire time that the emergency exit function is required (so far referred to space is occupied by people).

However, the application of this solution is not allowed by many standards, since it is required to constantly maintain the user’s safety condition.

There are embodiments (of a known type) that can retract the valves due to rotation of the handle. However, these embodiments, due to the content of the plurality of interconnected components, entail the use of a box-shaped holding case that is very large (much larger than a standard lock for reinforced doors). For this reason, such locks for reinforced doors, suitable for use with the emergency exit function, are configured to be installed only on doors that are specifically designed to hold them.

The obvious problem with all locks that have an emergency exit function is that this function makes the lock unsafe if it is stolen inside a room separated by the door in which the lock is installed.

If the thief is able to enter the room (for example, through a window), he can exit through the main door (even if the door is closed for several revolutions and, therefore, with the shutters fully extended), since the rotation of the handle with the emergency exit function entails the retraction of the latch and gate valves.

Examples of locks with emergency exit function are given in EP 0688930 A2, which discloses a lock according to the preamble of paragraph 1 of the claims. Another example of a lock containing a selector with emergency exit function is presented in document \ UO 2007/000763 A1.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a lock for reinforced doors and the like, comprising a selector with emergency exit function, which is suitable for controlling the behavior of the lock depending on the type of use that is set by the users themselves.

For this purpose, the subject of the present invention is to provide a lock for reinforced doors and the like, comprising a selector with emergency exit function, which has a low cost, is relatively easy to implement in practice, and safe to use.

This goal and this subject, as well as others, which will be better understood later in this document, are achieved through a lock for reinforced doors and the like, according to the claimed invention, containing the features specified in claim 1.

Brief Description of the Drawings

Additional features and advantages of the invention will be better understood from the following detailed description of a preferred, but not exclusive embodiment of a lock for reinforced doors and the like, illustrated by way of non-limiting example in the accompanying drawings, in which FIG. 1 is a partial sectional perspective view of a lock for reinforced doors and the like provided with a switch according to the present invention in an emergency exit function enable position;

FIG. 2 is a partial sectional perspective view of a lock for reinforced doors and the like provided with a switch according to the present invention in an emergency exit function enable position;

FIG. 3 is a partial sectional perspective view of a lock for reinforced doors and the like, provided

- 1 017821 wounded with a switch according to the present invention in the off position of the emergency exit function;

FIG. 4 is a partial sectional perspective view of a lock for reinforced doors and the like provided with a switch according to the present invention in the off position of the emergency exit function.

Detailed Description of Embodiments of the Present Invention

In the drawings, the number 1 generally indicates a lock for locks for reinforced doors and the like.

The lock 1 for reinforced doors, suitable for installing a switch in it, contains a box-shaped holding case 2, which essentially has a parallelepiped shape, with two mutually opposite front sides 3, which have a large surface and four transverse edges, the upper edge 4, lower edge 5, leading edge 6 and trailing edge (not shown in the drawings). A box-shaped case 2 can be provided that meets the technical requirements of observing the standard size for this type of lock, with the advantage that it can be installed in any reinforced door without requiring any modifications to it.

The box-shaped housing 2 is provided with suitable transverse openings 7 for passing at least one latch (not shown in the drawings) and at least one valve 8. According to the embodiment depicted in the drawings, at least one valve 8 consists of four cylindrical elements, which are parallel to each other and can slide perpendicular to the lock 1. There are options for implementation in which additional valves are used that protrude from the upper edge 4 and from the lower edge 5 for communication with connecting rods, which are made with the possibility of actuating pins that make a rectilinear movement relative to the door and are located at any distance from the lock.

Inside the box-shaped body 2, a plurality of substantially plate-like elements are operatively connected to the cylinder (only the socket 9 of which is visible in the drawings), which is actuated by the corresponding key.

Also inside the body 2 there is a rotating element (not shown in the drawings) for engaging with a handle: said element is connected to at least one latch by means of suitable lever systems of a known type, which are arranged to move said latch.

The lock additionally contains a linearly moving plate 10, which is functionally connected in the upper region with the rotating element and in the lower region with the plate element 11, which is rigidly connected to the gate valves 8 by means of a carousel 12, which is articulated at another point to the box-shaped body 2.

The switch comprises a linearly moving assembly 13, which can be moved between two extreme configurations when switched by the user and is rigidly attached to the plate 14 for attaching the plate element 11 to the carousel 12.

The plate 14 is functionally connected with the rotating element and can carry out linear movement, as a result of the rotations of the handle inside the said element: virtually every rotation of the handle entails a linear movement of the plate 14. When the plate 14 is attached to the carousel 12, its movement leads to the rotation of the carousel 12 and, therefore, to retract the element 11, i.e. retract the valves 8.

In the first extreme position of the assembly 13 (which can be seen in Figs. 1 and 2), the carousel 12 is pivotally attached to the plate 14 and, therefore, rigidly attached to the element 11, and in the second extreme position (which can be seen in Fig. 3 and 4) the carousel 12 and the plate 14 are separate and independent.

The linearly moving assembly 13 comprises a bracket 13 a, which is provided with suitable grooves 15 for accommodating the pins 16, which are rigidly attached to the housing 2.

The slots 15 and the pins 16 are configured to guide the brackets 13a during linear movement between the extreme configurations: thus, as can be clearly seen in the drawings, the plate 14 can move along a given direction (vertically according to the drawings) with a stroke, the maximum value of which is equal to the length 15 grooves.

The node 13 is functionally connected to the control element 17, which can be actuated externally, even directly, and is configured to move it between the extreme configurations.

In particular, according to the embodiment depicted in the drawings, the control element 17 comprises a rotating pin 18, which can be accessed externally through the opening 19 of the box-shaped housing 2 (according to the embodiment shown in the drawings, the opening 19 is in the front edge 6).

The pin 18 has an end 20 directed towards the inside of the housing 2, which has a corresponding shape and is in direct contact with the protrusion 21, which is rigidly attached to the bracket 13 a.

The contour of the end 20 determines the position of the bracket 13a according to the angular position of the pin 18 and, subsequently

- 2 017821 surely, the state of mutual attachment and detachment of the plate 14 and the carousel 12.

According to an alternative embodiment, the control element 17 comprises a sliding block that can be accessed externally through the opening of the box body 2. In said sliding block, an end directed inward of the housing 2 is connected to the bracket 13a, and the linear movement of the block determines the position of the bracket 13a and therefore the state of mutual attachment and detachment of the plate 14 and the carousel 12.

It is also possible to provide an embodiment in which the control element 17 is electromechanical: in this case, it comprises an actuator that is controlled, optionally even remotely, by means of a switch that has an end of the movable element connected to the bracket 13a for linear movement thereof, thereby determining the state of mutual attachment and detachment of the plate 14 and the carousel 12.

Optionally, it is also possible to provide a control element 17, which contains an oscillating unit, which can be accessed externally through the opening of the box-shaped case 2, and the surface of which is directed inside the case 2, is connected with the bracket 13a.

In this case, the rotation of the block relative to the axis of rotation determines the position of the bracket 13a and, therefore, the state of mutual attachment and detachment of the plate 14 and the carousel 12. For the user, the oscillating block has the appearance of a switch, which can be placed in two different configurations (with an appearance that completely similar to the switch of the type used in electrical systems).

The plate 14 for attaching to the carousel 12 contains an open groove 22, which is located opposite and near the pin 23, which is rigidly attached to the carousel 12.

The pin 23 is located inside the groove 22 in one of the aforementioned extreme configurations of the node 13 and, conversely, outside it in another extreme configuration.

The operation of the switch according to the invention is as follows.

While the control element 17 is in a position that corresponds to the first extreme configuration, the bracket 13a is forced to linearly move towards the upper edge 4 of the housing 2. Under these conditions, the plate 14 is also raised and, therefore, the pin 23 is located outside the groove 22: the carousel 12 and the plate 14 are mutually disconnected, and the carousel 12 can move freely; in this configuration, the lock does not carry out the exit function when panic occurs, and the valves 8 can only be retracted by actuating the cylinder with the appropriate key. The movement of the handle instead of entailing the corresponding movement of the plate 14 is not actually transmitted to the carousel 12, since these two elements are not mutually connected.

When the control element is located so as to determine the second extreme configuration, the bracket 13a is forced to linearly move towards the lower edge 5 of the body 2. Under these conditions, the plate 14 is also lowered and, therefore, the pin 23 is inside the groove 22. The carousel 12 and the plate 14 are mutually attached, and the carousel 12 can move rigidly with the plate 14; in this configuration, the lock functions as an emergency exit, and the bolts 8 can be retracted simply by actuating the handle. The movement of the handle actually entails the corresponding movement of the plate 14, which is transmitted to the carousel 12, since these two elements are mutually connected. The carousel 12 causes the retraction of the element 11 and, consequently, the valves 8.

Thus, it was shown that the invention achieves the intended purpose and objects.

The invention, understood in this way, involves numerous modifications and changes, all of which are not beyond the scope of the attached claims.

Claims (8)

CLAIM 1. A lock for reinforced doors and the like, comprising a box-shaped holding body (2), which has suitable transverse holes (7) for passing at least one latch and at least one valve (8), wherein said box-shaped holding body contains many plate elements, which are functionally connected with a cylinder that is actuated by a corresponding key, and a rotating element for engaging with a handle, which is connected with said at least one latch on lever systems and is configured to move the latch, and contains a linearly moving plate (10), which performs linear movement and is functionally connected in the upper region with the said rotating element and in the lower region with a plate element (11), which is rigidly attached to the valve ( 8) by means of the carousel (12), which is pivotally connected at another point to the box-shaped holding body (2), characterized in that it contains a selector including a linearly moving unit (13), which can It does not move between two extreme positions when switched by the user and is rigidly attached to the plate (14) for attachment to the carousel (12), and the said plate (14) is functionally connected with the said rotating element and is linearly movable, as a result of the rotation of the handle in the said rotating element , and in the first extreme position of the mentioned linearly moving - 3 017821 of the host unit (13) the carousel (12) is pivotally attached to said plate (14) and, therefore, is rigidly attached to said plate element (11), and in the second extreme position the carousel (12) and said plate (14) are separate and independent. 2. A lock according to claim 1, characterized in that the linearly moving unit (13) contains a bracket (13a), which contains suitable slots (15) for accommodating pins (16), which are rigidly attached to the body (2), and the said slots (15) and pins (16) are configured to guide the bracket (13a) during linear movement between the mentioned extreme configurations. 3. A lock according to claim 2, characterized in that said linearly moving unit (13) is functionally connected to a control element (17), which can be actuated from the outside, even directly, and configured to move it between the outermost configurations. 4. A lock according to claim 3, characterized in that the control element (17) comprises a rotating pin (18), which can be accessible from the outside through the opening (19) of the box-shaped body (2), the end (20) of which is directed inside the body (2 ) and has the appropriate shape and is in direct contact with the protrusion (21), which is rigidly attached to the bracket (13a), and the contour of the end (20) determines the position of the bracket (13a) according to the angular position of said pin (18) and, therefore, mutual attachment and detachment of the plate (14) and the carousel (12). 5. The lock according to claim 3, characterized in that the control element (17) contains a sliding block, which can be accessed from the outside through the opening of the box-shaped housing (2), in which the end directed inside the housing (2) is connected to the bracket (13a ), and the linear movement of the block determines the position of the bracket (13a) and, therefore, the state of interconnection and detachment of the plate (14) and the carousel (12). 6. The lock according to claim 3, characterized in that the control element (17) contains an actuator that is controlled, optionally even remotely, by means of a switch, while the end of the movable element is connected to the bracket (13a) for its linear movement, thus determining the state of interconnection and detachment of the plate (14) and the carousel (12). 7. A lock according to claim 3, characterized in that the control element (17) comprises an oscillating block, which can be accessed from the outside through the opening of the box-shaped housing (2), while the surface directed inside the housing (2) is connected to the bracket (13a ), and the rotation of the block relative to the axis of rotation determines the position of the bracket (13a) and, therefore, the state of interconnection and detachment of the plate (14) and the carousel (12). 8. Lock according to any one of the preceding paragraphs, characterized in that the plate (14) for attaching to the carousel (12) contains an open groove (22), which is located opposite and near the pin (23), which is rigidly attached to the carousel (12), moreover, the pin (23) is placed inside the groove (22) in one of the said extreme configurations of said node (13) and is located outside it in another extreme configuration.