WO2003018937A1

WO2003018937A1 - Safety and control lock

Info

Publication number: WO2003018937A1
Application number: PCT/ES2002/000415
Authority: WO
Inventors: María del Carmen GARCÍA RAMOS
Original assignee: Investigación Y Transferencia De Tecnología, S.L.
Priority date: 2001-08-30
Filing date: 2002-08-30
Publication date: 2003-03-06
Also published as: ES2184635A1; ES2184635B1

Abstract

The invention relates to a safety and control lock comprising a non-powered rotation shaft (3) which passes through the body of the door (1) on which the lock is disposed. Part of the aforementioned shaft (3) is housed in a longitudinal and axial manner inside the tubular body (5) of the latch, bolt, catch or corresponding closure element. Said shaft (3) and tubular body (5) are provided with transverse openings (10 and 11) which face one another when the shaft (3) is in a determined position established by a lateral pressure device. In this way, a pin (9), which locks the shaft and the body (5), can be positioned such that when the shaft (3) is in said determined position and is actuated from inside, the body (5) is driven in rotation and, as a result, the door opens. The pin (9) is moved by activating an electromagnet (7) through the emission of a signal which is encoded by the person authorised to open the door.

Description

SECURITY AND CONTROL LOCK

OBJECT OF THE INVENTION The present invention, as expressed in the statement of this specification, refers to a security and control lock applicable to any type of door, such as that of cabinets located on public roads, and more specifically at the door of certain cabinets in whose interior equipment and / or means are destined to serve communities, individual homes, etc., being able to cite as more significant the classic telephone distribution cabinets installed on sidewalks or building facades, as well as in other cabinets for location and protection of water meters, electrical connections, gas, telephone access, etc.

The object of the invention is none other than to provide a lock applicable to the type of cabinets referred to, which in addition to ensuring the closure of the cabinet prevents opening by any person not authorized to do so, being equally applicable to any other practical case in the that its use is required.

BACKGROUND OF THE INVENTION Cabinets mounted on public roads for the manufacture and protection of certain service equipment, such as telephone distribution, water meters, electricity, gas, etc., are closed with a gate whose lock usually be constituted by an axis of square or triangular section, where the opening and closing is carried out by means of a crank whose end has the appropriate configuration and complementary to the section of the referred axis, so that the mutual coupling between the crank and the axis allows , by turning it, open the corresponding door. This type of lock and its corresponding Crank handles are widely known and widely used, so that the crank in question can be easily acquired by anyone, so that the door of said type of cabinets can be opened without any difficulty, allowing any user or person to manipulate the devices , equipment or media located inside the cabinet in question.

Therefore, in practice, the type of lock referred to does not effectively protect the equipment and means located inside the cabinets, which can cause great problems and disturbances to the users in the event that any malicious person carries out a manipulation not allowed of the equipment or means located in said cabinets. Obviously, this problem could be solved by applying a normal key lock in each cabinet. Now, this possible solution would be practically unfeasible because of the problems that it caused - they would narrate the large number of keys that the operators would have to carry, as well as the transfer that would originate in the shift changes, etc.

DESCRIPTION OF THE INVENTION The security and control lock object of the invention, applicable in the type of cabinets referred to above and in others where its implementation is feasible, has the peculiarity that it can only be opened by the authorized person.

In this sense, the lock of the invention is constituted from an axis of crazy rotation which, being passed through the body of the door, is housed, with free rotation, in a cylindrical body to which the bolt, latch or the corresponding opening and closing failed, and whose body is laterally supported by an electromagnet that when activated acts on a pin that travels transversely with respect to the body of the bolt, so that in this displacement the pin is through a transverse hole established for the purpose in the axis of crazy rotation, causing the latter to lock with the body of the bolt, all this so that by an appropriate and applicable tool on the head or external part of the aforementioned axis, the rotation of this one takes place and with it the action on the bolt, carrying out the corresponding opening. The referred drive tool could be the current one used in this type of cabinets, that is, the square or triangle key, allowing to take advantage of what exists.

The activation of the electromagnet is based on the signal received from a local control center established inside the cabinet itself, and whose control center can be activated by any appropriate system, such as a proximity transmitter, a key or magnetic card , or from a remote control that after receiving the appropriate coded signals from the authorized person and who intends to open the cabinet, sends the corresponding coded signal to the said local control center so that it sends the signal to the electromagnet, which is will activate producing the displacement of the pin that locks and unlocks the crazy axis of rotation and the body of the bolt. Likewise, it is envisaged that the local control center will be associated with a series of sensors through which it receives information related to the opening or closing situation of the door, as well as the situation of the power supply, breakdown alarm, etc. whose information is useful and is sent to the remote control center.

It has also been provided that the idle axis of rotation is capable of being complemented with a positioning device, formed by a spring housed in a transverse hole of said axis and that constantly pushes mind outward to a sphere, pressing it against the internal lateral surface of the body of which the bolt is a part, providing for a concave and internal depression in that body of the bolt in which the shaft is housed, said device constituting an indicator of the correct position of the shaft, that is, suitable for the transverse hole thereof to face the locking pin to allow it to move.

In a variant embodiment, it is provided that the lock assembly, with the exception of the inner end of the tubular body of which the bolt is part, failed or opening and closing latch, is mounted in front of the door, that is, in the outside, to avoid. _' that could bump into mounted devices or equipment inside the cabinet.

All the lock assembly that remains in: the outside, is protected and located in a housing that is fixed on the front of the door, housing that has a front opening to be able to access, through the appropriate tool, the axis of rotation crazy, whose end or front will have the appropriate configuration (the classic square, triangular prism, groove, etc.) to be able to act on it by means of said tool, which will present its shaped end complementary to that of the front end of said axis.

The front of the housing will in this case be affected by a location hole of a pilot light indicating the activation of the electromagnet, as well as a pair of contacts through which the electromagnet can be activated in case of lack of power, and whose activation will be carried out by an emergency team.

BRIEF DESCRIPTION OF THE DRAWINGS To complement the description that will then be made and in order to help a better Understanding the features of the invention, a set of drawings is attached to the present specification based on which innovations and advantages of the security lock object of the invention will be more readily understood.

Figure 1.- It shows a sectional view of the lock object of the invention, with the pin actuated, that is to say in the position in which it performs the lock between the free rotation axis and the body of the opening and closing bolt of the door.

Figure 2. - Shows a perspective view of the crazy axis with the transverse hole thereto and facing the corresponding pin. In this position, the shaft can rotate freely since the pin is outside the aforementioned shaft hole.

Figure 3. - It shows a general perspective view of the lock assembly without the door in which it is applicable, in a blocking situation between the body of the bolt and the axis of crazy rotation, the electromagnet being seen laterally supported on the body of the bolt and the pin in the actuated position, that is, blocking the axis of crazy rotation with the body of the bolt.

Figure 4.- Shows a schematic representation corresponding to a form of operation of the lock.

Figure 5.- Shows a representation corresponding to the block diagram of the general operation of the lock.

Figure 6. - Shows the electrical scheme in a developed and complete form thereof, for the operation of the lock.

Figure 7. - Shows a sectional view of the lock of the invention, in the variant embodiment in which most of the assembly of said lock is located outside the door, protected by a housing fixed on the front of said door.

Figure 8. - It shows a front view of the outer shell shown in the previous figure, the two extreme positions (opening and closing) that the electromagnet can occupy when acting on the axis of crazy rotation are seen in a broken line. This figure also shows the electromagnet activation signaling pilot and the two contacts for emergency equipment connection. DESCRIPTION OF THE PREFERRED EMBODIMENT

In view of the aforementioned figures, the safety and control lock object of the invention, applicable to the door 1 of a cabinet 2 of which are mounted on sidewalks, facades, etc., of the public thoroughfare and intended for locate and protect equipment from, for example, telephone distribution, water meters, etc. , or any other type of cabinet, box or body in which its use is feasible, is constituted from a free-turning axis 3 that has an appropriate conformation 4 on its front face or head, through which and by means of the appropriate tool, the drive of said shaft 3 can be carried out, which is mostly housed axially in a tubular body 5 belonging to the bolt 6, latch, lever or any other element by means of which the closing of the the aforementioned door 2.

On the tubular body 5 in which the axis 3 is housed with free rotation, an electromagnet 7 is laterally connected with power cables 8 so that by means of the corresponding signal it can activate said electromagnet 7, which is associated to a pin 9 capable of moving in the forward and reverse direction with respect to the electromagnet 7 to effect the blocking and / or unblocking between the axis 3 and the tubular body 5 of the bolt 6 or closing element corresponding, for which the aforementioned axis 3 has a transverse and through hole 10, the tubular body 5 having another hole 11 capable of facing said hole 10 to allow the movement of the pin 9, so that the confrontation or correct position to allow the displacement of the pin 9, it is indicated by a positioning device consisting of a spring 12 housed in a blind hole 13 and radial of the axis 3, whose spring constantly pushes out a sphere or ball 14 capable of being positioned in a recess or complementary depression 15 established inside the tubular body 5 of the closure or bolt element, which may be a failure, latch or the like. That is, when the axis 3 is located in the correct position, logically the sphere 14 is positioned in the depression 15, which indicates that in that position the hole 10 of the axis 3 and hole 11 of the tubular body 5 are facing and therefore The displacement of the pin 9 can be carried out. In Figure 1, two depressions 15, in diametral opposition, are represented, any of which is valid to establish the correct position of the axis 3 and therefore of the lock, to allow carry out the operation of the latter and consequently the opening of the door in which it is applied.

As it is evident, the spring 12 will have little force so that the thrust on the sphere 14 is slight, so that the pressure of the latter on the corresponding depression 15 is smooth and does not allow the opening by simple rotation of the axis 3, since that if the pressure were large, the rotation of such an axis 3 would produce the drag and respective rotation of the body 5, and therefore the opening of the door.

From these structural characteristics of the security lock, when the authorized person 16 needs to open the door 1 of the cabinet, for carry out the corresponding manipulation of the equipment or means established inside, said person 16 will place the lock, that is, axis 3 in the correct opening position, and then issue a message via radio 17, with the appropriate information so that A remote control center 19 verifies its conformity and proceeds to send a signal, via telephone 18, to a local control center 20 located inside the cabinet 2, and whose local control center 20 orders the action of the pin 9 by providing to electromagnet 7 adequate energy. The action on that pin 9 carries its displacement from the retraction position represented in Figure 2 to the blocking position represented in Figures 1 and 3, in which second case the axis 3 is integral with the tubular body 5, whereby the person 16, by means of the suitable tool, will be able to carry out, through the conformation 4, the rotation of said axis 3 and therefore the release of the door, by displacement or balancing of the latch or bolt 6 that blocked the door in its closed position.

To make the closure, proceed in the same way as described, checking the person 16 that axis 3 is crazy.

Obviously, the sending of the signals via radio 17 and via telephone 18 referred to above, can be done by any other appropriate means of transmission.

As for the remote control center 19, it can record the opening and closing hours, the identification of the person opening the closet door, the location of said door to the lock, etc. , by placing the appropriate sensors, thus carrying out the security check.

For its part, the local control center 20 can also be used to send information about other parameters, such as temperature, power supply status, fault alarm, receiving information from the sensors 21 located inside the cabinet 2, so that such information and through said local control center 20 are sent to the center remote control 19.

Likewise, the operation of the lock can be carried out in another way, where the person 16 can have any other means such as a proximity transmitter, magnetic card, keyboard or any other element that acts directly on the control center. local 20, through which the order is given, of activation of the electromagnet 7 and therefore of actuation of the pin 9, allowing the opening of the closure of the cabinet in the same way as previously stated.

Figure 8 shows the electrical scheme developed, showing how the signal to drive the electromagnet 7 is carried out through a relay 27, the local control unit 20 being supplied by an electric power source 22, through the relay 23. In the event that the power source 22 did not receive power, the system would cease to function and it would be impossible to open the door 1, until the power is restored.

To solve this circumstance, emergency equipment 24 is used with an outlet 25 that is applied to a connector established for this purpose in the cabinet, said emergency equipment 24 providing the same power as that provided by power source 22 to the local control unit 20, making possible the operation of the system, that is, of the lock, while mains power is lacking. If there is any kind of breakdown in the control unit 20 or power source 22, the door 1 of the cabinet could not be opened either. In this case the emergency equipment 23 may produce an encoded signal and if it is supported by a decoded unit 26, it causes it to act on the relay 27, through which the activation of the electromagnet 7 by the emergency equipment 23 will be established. .

In a variant embodiment shown in Figures 7 and 8, the lock assembly, for the most part, is located outside, that is, in front of the door 1 'of the cabinet, said assembly being housed in a housing 28 fixed on the front of said door 1 '.

In this case, the axis 3 'is topped by its front end in a 4' configuration as a square or similar to be able to be operated by a tool 29 which will have its complementary end to that configuration 4 'as a square or similar. The end of the tool 29 is introduced through a window or opening 30 provided for this purpose in the front of the housing 28, so that the axis 3 'can be rotated. As can be seen in figure 7, most of the portion or tubular body 5 'in which the axis 3' is guided and rotated, is located in front of the door 1 ', leaving behind it an end part carrier of the bolt or closing element 6 '. Likewise, it can be seen how the electromagnet 7 ', in solidarity with the tubular body 5', is located with its pin 9 'in front of the door 1', said electromagnet 7 'being fed through the conductors 8'. It can also be seen in Figure 7, the sphere 14 'pushed by the spring 12' housed in the blind hole 13 'for positioning it in the recess 15' with which the neck 30 'in which it extends towards the inside the hole 30 of the front of the housing 28, as well as the holes 10 'and 11' of the shaft 3 'and the tubular body 5', in which houses the pin 9 '.

In this variant embodiment, arranging most of the lock assembly inside the door 1 'and protected by the housing 28 fixed on the front of the door, prevents the inner end portion from stopping against the devices or equipment that incorporates inside the closet itself.

In addition, in the housing 28 there is a light pilot 31, whose ignition will indicate that the electromagnet 7 'is activated and that therefore the axis 5' can be operated or operated to perform the opening. It also incorporates the contacts 32 that determine the connector for the connection of the socket or terminal 25 corresponding to the emergency equipment 24, the cables that form the contacts 32 of the connector being able to be provided with the corresponding insulation, in case the housing 28 is metallic Naturally, through these contacts 32, the electromagnet 7 'is activated by means of emergency equipment 24, as already indicated above.

Claims

CLAIMS 1.- SECURITY AND CONTROL LOCK, which being applicable in cabinet doors, boxes, enclosures, and preferably in cabinet doors of the type that are installed on sidewalks, facades, and other places on public roads , intended to locate and protect equipment such as telephone distributors, water, electricity and gas meters or others, it is characterized in that it is constituted from a crazy axis (3 or 3 ') mounted with the power of free rotation in the housing that determines a tubular body (5 or 5 ') belonging to the latch, bolt or locking element (6 or 6') that carries out the retention of the door (1 or 1 ') with respect to the corresponding cabinet body (2), having provided a electromagnet (7 or 7 ') whose activation involves the displacement of a pin (9 or 9') capable of jointly blocking the free-rotating shaft (3 or 3 ') and the tubular body

(5 or 5 ') of the bolt (6 or 6') for locking or closing the door, with the particularity that both the shaft (3 or 3 ') and the tubular body (5 or 5') have holes ( 10 and 11 or 10 'and 11') likely to face each other to allow the pin to move (9 or 9 ').

2. SECURITY AND CONTROL LOCK, according to claim 1, characterized in that the crazy axis (3 or 3 ') has means that keep the correct position of facing the transverse hole (10 or 10') of said axis (3 or 3) stable. 3 ') and the hole (11 or 11') of the tubular body (5 or 5 ') to allow the movement of the pin (9 or 9') and achieve the corresponding blockage between said axis (3 or 3 ') and body (5 or 5 '); with the particularity that these means of correct positioning of the idle shaft (3 or 3 ') are constituted by a spring (12 or 12') housed in a blind and radial hole (13 or 13 ') of the shaft, whose spring (12 or 12 ') presses a sphere or ball (14 or 14') against the inner surface of the tubular body (5 or 5 '), through which the axis (3 or 3') is positioned, so that the correct position of such axis (3 or 3 ') is determined by the positioning of the sphere (14 or 14') in a of the depressions (15 or 15 ') established for the purpose in diametral opposition on the internal surface of the body (5 or 5') of the door (1 or 1 ') of the cabinet (2).

3.- SECURITY AND CONTROL LOCK, according to claims 1 and 2, characterized in that inside the cabinet (2) a local control center (20) is provided which, in combination with a remote control center (19), provides the electrical signal corresponding to the electromagnet (7 or 7 ') to carry out the action of the pin (9 or 9'), upon receipt by the remote control center (19) of the correct information provided by the person (16 ) responsible for opening the door (1 or 1 ').

4.- SECURITY AND CONTROL LOCK, according to previous claims, characterized in that the information or signals between the person (16) in charge of performing the opening and the remote control center (19) as well as between it and the local control center ( 20), is capable of being carried out via radio (17) and / or by telephone (18), or by any other appropriate transmission system.

5.- SECURITY AND CONTROL LOCK, according to previous claims, characterized in that the information and signals from which the opening of the lock is activated, is capable of being carried out by means of a proximity transmitter, magnetic card, keyboard or other appropriate component which is operated by the person (16), emitting the signals directly to the local control center (20), through which the activation order of the electromagnet (7 or 7 ') is provided for the actuation of the pin (9 or 9 ') to the position that allows the door to open.

6. SECURITY AND CONTROL LOCK, according to previous claims, characterized in that the local control center (20) is associated with a series of sensors (21) located inside the cabinet itself (2), provided for issuing information corresponding to certain situations of opening / closing the door (1 or 1 '), of alarms, or others, said information being received by the local control center (20) and sent to the remote control center (19).

7. SECURITY AND CONTROL LOCK, according to any of the preceding claims, characterized in that a greater part of the shaft (3 '), as well as a greater part of the tubular body (5') and the assembly formed by the electromagnet (7 ' ) in solidarity with the tubular body (5 ') and pin (9'), are arranged frontally on the outside of the door (1 ') of the cabinet, these protruding or external parts being protected by a housing (28) fixed frontally on the door, (1 '); having provided that the rear end of the shaft (3 ') to which the lock is related or failed to block (6') is arranged, together with such a lock or failed (6 '), inside the cabinet, behind the door (1 ').

8. SECURITY AND CONTROL LOCK, according to claim 7, characterized in that the housing (28) incorporates in its front a light pilot (31) for signaling the activation of the electromagnet (7 '); being also provided with a pair of contacts (32) determining a corrector for a terminal (25) belonging to an emergency equipment (24) through which the electromagnet (7 ') can be activated, in case of lack of power supply network