FR2809441A1 - Lock for security door has lock assembly with circuit to actuate lock via release coupling between lock bolt and shaft - Google Patents

Abstract

The lock for a security door (1) has a lock mechanism (1) with an electrical circuit (7) for actuating the lock and a detector (9) to identify the user. The detachable lock operating handle (3) has an electrical circuit for identification with the lock circuit. An electrical conductor (11) to connect the lock operating shaft and the handle. The lock can have a selectively actuatable connector between the lock bolt and shaft to control operation.

Description

<B> <U> LOCK </ U> </ B> </ b> </ b> </ b> </ b> <b> <b> <b> <b> <b> <b> <b> <b> <b> <b> <b> <b> <b> </ U> </ B> The invention relates to a lock that can be operated using a so-called half-square maneuvering handle.

In particular to limit access to certain premises without however this limitation has a high security character, it is known to remove these locks the operating handle which indirectly actuates the bolt so that only the axis of maneuver remains apparent.

The section this axis of maneuver is chosen to be able to be associated only with a maneuver handle having the footprint complementary to the section of the axis.

These handles are distributed to persons duly authorized access to these premises or cabinets protected by this system.

This precaution proves in general sufficiently dissuasive; however, there is increasingly, loss or theft of these handles and therefore a risk of use by unauthorized third parties.

 Also, it is found that some finger grips can be used for the operation of somewhat different axes, operated, for example, by another department another company.

This therefore has disadvantages.

The invention therefore proposes in particular to remedy.

To this end, the subject of the invention is a lock of the aforementioned type comprising a bolt actuated at least indirectly by a maneuvering spindle of predetermined section, of which only one end remains visible and on which end a momentary engagement of a handle having a section imprint adapted to the section of the axis of maneuver, the imprint of the handle and the section of the axis constituting an access control means, this lock being characterized in that - the lock houses a electrical device comprising an electric means for locking / unlocking the operation of the bolt and means for recognizing an identifier, - the operating handle houses an electronic identification circuit capable of transmitting an identifier and - a transmission means with contact from the identifier to the recognition means consisting of a first driver circuit comprising the maneuvering axis and the operating handle which, in conductive material, thus constitutes the electrical mass and a second conductive circuit comprising. on the one hand, axially traversing the operating axis while being electrically isolated therefrom to open in its front face to provide contact, an electrical conductor connected to the electrical device and,. on the other hand, presented by the bottom of the cavity, an electrical contact with the electronic identification circuit which electrical contact is isolated from the electrical ground.

The invention will be better understood using the following description given by way of non-limiting example, with reference to the accompanying drawing which shows schematically - Figure 1: a sectional view of a lock, - figure 2: means for implementing the invention.

Referring to the drawing, there is shown a lock 1 comprising a bolt actuates at least indirectly by an axis 2 of predetermined section of maneuvering which momentarily fits a handle 3 maneuver having imprint 4 of section adapted to the section of the axis maneuvering.

The fingerprint of the operating handle and the section of the axis constitute a means 5 of access control.

More specifically, the section of the axis is outside the usual manufacturing standards.

In the example shown, it is a truncated pyramid.

To improve this point, the axis is housed coaxially in a liner 6 so that the operating key must be able to engage dimensionally both on the axis 2 maneuver and in the liner 6.

The axis can be of square section but can take different sections, such as a triangle a star or other.

According to the invention - the lock 1 houses an electrical device 7 comprising an electric locking means 8 and unlatching the actuation of the bolt and a means 9 for recognizing an identifier, - the operating handle 3 houses an electronic circuit 10. identification capable of transmitting an identifier and - means 11 for transmission with contact of the identifier to the recognition means consisting of a first conductive circuit 12 comprising the operating axis 2 and the handgrip 3 which, made of conducting material therefore constitutes the electrical mass and a second circuit 13 conductor comprising. an axially traversing the axis 2 maneuver while being electrically insulated thereof to lead into its end face to provide a contact, an electric conductor 14 connected to the electrical device and,. on the other hand, presented by the bottom of the footprint an electrical contact with the electronic identification circuit, which electrical contact is isolated from the electrical ground.

The electrical lock 8 means unlatching the lock lever operation is, in one embodiment, a clutch means interposed between the actuating shaft and bolt.

This solution has the advantage that, even forcing mechanically on the axis, we can not manage to move the bolt.

In another embodiment, the locking means 8 lock / unlock is a lock in the active position, hinders the movement of the bolt so inactive position allows movement.

Advantageously, the electronic identification circuit comprises means 16 limiting the period of validity of the operating handle.

More specifically, the identification circuit comprises a memory 16A with a timing means 16B so that regularly this memory must be reloaded for a given period.

The electronic identification circuit and the electronic device may optionally comprise means limiting the time slots for operating the lock.

Thus, the lock appears identical to traditional locks but requires intelligent recognition through the operating handle so that the handle can then actuate the bolt. It is also understood that it is particularly interesting that the electronic identification circuit must be regularly reactivated because even if the operating handle is stolen or lost, it quickly becomes useless.

Another advantage results from the possibility of choosing, for example, for a local what are the identifiers having access to the local.

For the maintenance of equipment located in this type of room, it is thus possible to entrust to an operator a handle whose maneuvering is limited to the time presumed intervention.

The invention also comprises means 100 for initializing and / or modifying or reactivating the electronic identification circuit housed in the operating key.

A similar means makes it possible to modify the means 9 housed in the lock.

Claims (6)

<B> <U> CLAIMS </ U> </ B> 1. A lock (1) operable using a handle said half square comprising a bolt operated at least indirectly an axis (2) of predetermined section of section on which momentarily fits a handful of maneuver having an imprint (4) of section adapted to the section axis maneuver, this lock being CHARACTERISE what - lock (1) housed a device (7) comprising electric means (8) electric lock unloak unlocks the operation of the bolt and means (9) for recognizing an identifier, - maneuvering handle (3) houses an electronic identification circuit (10) capable of transmitting an identifier and means (11) of transmission with contact of the identifier towards the recognition means consisting of a first conductive circuit (12) comprising the operating axis (2) and the operating handle (3) which, in conductive material, therefore constitutes the electric ground and a second circuit (13). ) con driver including. on the one hand, axially traversing the axis (2) of maneuver while being electrically isolated therefrom to open in its front face to provide a contact, an electric conductor (14) connected to the electrical device and,. on the other hand, presented by the bottom of the cavity an electrical contact (15) with the electronic identification circuit, which electrical contact is isolated from the electrical ground. 2. Lock according to claim 1 <B> characterized </ B> in that the means (8) electric locking / unlocking the yoke of the peg is a clutch means interposed between the operating shaft and the bolt. 3. Lock according to claim 1 <B> characterized </ B> characterized in that the means (8) unlatched lock unlatch is a lock which, in the active position, hinders the movement of the bolt and thus inactive position allows the displacement. 4. Lock according to claim 1 characterized in that the electronic identification circuit comprises means (16) limiting the duration of validity of the operating handle. 5. Lock according to claim 1 characterized in that the electronic identification circuit and the electronic device comprise means limiting the time slots maneuver of the lock. 6. Lock according to claim 1 characterized in that it also comprises means (100) for initializing and / or modifying or reactivating the electronic identification circuit.