LU85803A1 - TIME LOCK - Google Patents

Description

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TIME LOCK

The present invention relates to a time lock | re which allows to put in the open or closed position a locking mechanism of a lock of a safe for example 05.

The object of the present invention is to provide additional security for locks

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Another object of the present invention aims to; „10 provide a device that prevents or allows the opening; ture of a safe using conventional mechanical locks, during certain periods of the day and / or week.

According to the present invention, said time lock consists of a mechanical locking means controlled by logic circuits.

According to a preferred embodiment of the present invention, the logic circuits are constituted by electronic circuits which perform the counting and clock functions with the necessary resets.

Advantageously, the electronic circuits allow programming of the opening and / or closing hours repeatedly. They can however also allow temporary interventions, during which the so-called repetitive program is interrupted to make way for a so-called temporary program such as a modification of the activation times, that is to say of opening or of. closure, over a completed period, such as a week, a weekend, a few hours or a fraction of an hour.

The electronic circuits can also have safety functions which control the locking position when the circuits are activated by manual intervention, for example by pressing one or more times on a contactor, integrated in the apparatus or in the outside of it for example a

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, -vr 2 w contactor housed in the lock proper of the safe and which is actuated when an operator introduces a key in it or an alarm actuated in the event of danger.

05 The electronic circuits are preferably supplied by an independent energy source, advantageously split for safety reasons, the circuits being designed so as to switch from one supply to another, in the event of a fault.

According to a particular embodiment, the time lock according to the present invention has a means of reading, for example optical, the position of the bar of the safe, which allows a reset · of the electronic circuits and the mechanical locking means.

According to the present invention, the locking means consists of a sliding blocking element controlled in its reciprocating movement by a motor actuated by the logic circuits.

According to a particular embodiment of the present invention, the sliding blocking element is articulated on a lever arm whose tilting is controlled by a cam and which is optionally provided with a counterweight and / or a return spring. The cam 25 is advantageously driven in rotation by an electric motor connected in such a way that the sliding element can remain either in the blocking position or in the open position, the connection circuit of the electric motor comprising for this purpose contactors (mid 30 cro-switch).

Preferably, the sliding element can be controlled by a second motor which comes into action when the first is faulty, said second motor controlling a second cam which actuates the reciprocating movement of said lever arm, at the opposite end from that comprising the first cam, relatively Γ; at the point of tilting of said lever.

9 i ‘3 I It can be seen that the electronic circuits i and the mechanical locking can easily be arranged in a small box which can be suitably placed inside the safe. In this way, an opening of the trunk, by means of the key, outside of the preprogrammed opening hours is no longer possible and, on the other hand, the additional locking device is made inaccessible. It is also possible to separate the mechanical part and the circuits according to the application envisaged by separating the control members j from the closure members. Likewise, i · programming can be executed remotely, by direct link or j by air.

! The invention will be better understood using the detailed description given in support of the appended figures in which: - Figure 1 shows a schematic view of the locking mechanism y and - Figure 2 shows a schematic view similar to 20 that of FIG. 1, of another embodiment of the lock according to the invention.

The time lock of the present invention consists of an electronic part and a mechanical part 1. As described above, the electronic part which comprises a series of functions which allow fixed and / or temporary programming of the clock which controls, according to the desired hours, the opening or closing of the lock according to the invention. The circuits which constitute the electronic part can also comprise a series of additional functions, such as safety functions which engage the mechanical part under certain conditions.

The electronic part is advantageously supplied by an independent energy source, such as a cell or battery which is preferably split, the reserve cell coming into action when the main cell is exhausted or defective or when, / v *; * 4 I the supply lines are interrupted, for example! pie.

It has been found to be particularly advantageous to provide the lock according to the present invention with means 05 for reading, for example optical, the position of the closing bar of the safe; which makes it possible to carry out a reset to zero of the entire device.

Conventional electronic circuits are intended to control the mechanical locking means (1) 10 shown in the figures. This consists of a sliding blocking element 3 (shown in axis lines) which is articulated at 5 via an oblong hole 7 on a lever arm 9 which can tilt at 11 at a fixed point, preferably integral of the housing which contains the electronic part and the mechanical part of the device according to; The invention.

! The reciprocating movement of the lever arm 9 is controlled by a cam 13 which is actuated by a motor, for example by a direct current motor controlled by the electronic circuits described above, j of mannered to rotate only 180 ° for example.

I Advantageously, the lever arm 9 is provided with a counterweight 15 and / or with a return spring 17.

! According to a preferred embodiment of the present invention, and for safety reasons, the sliding element can be controlled by a second motor which comes into operation inter alia in the event of a failure of the first motor, said second motor controlling a second cam 20 which acts on the end of the lever arm 30 lever 9 opposite to that comprising the first cam 13, relative to the tipping point 11. ij As already mentioned, the electronic device is designed so that signals from the first power source and the first motor 35 are detected continuously or in regular sequence, so that the electronic device, in the event of detection of signals indicating a failure of the system ti • 5 (for example exhaustion of the first battery or short circuit, of the first motor) can put the second source or the second motor into service.

The electronic circuits are nevertheless arranged 05 in such a way that said second cam does not disturb the movement of the lever arm 9 following the rotation of said first cam, and vice versa.

The locking element 3 advantageously consists of a hollow tube which slides perpendicular to the axis of the passage sleeve of the locking bar of the safe itself. In this way, it prevents the opening of the safe during certain preprogrammed periods in the device of the invention which is further mounted inside said safe.

It is obvious that the present description is given by way of example only and does not in any way limit the scope of the present invention which is defined in the appended claims. We can thus replace any element by another equivalent element con-20 naked per se.

As an example, a few functions available on a time lock according to the invention are cited below: - next opening hour, this function has the highest priority and can be programmed seven days in advance; it must be reprogrammed after each * execution; - short closing time: this function has the same priority as the previous one, but can only be programmed for ninety minutes and must be re-programmed after each execution; - daily program: it has the lowest priority and is identical for every day. This function can be interrupted by the previous two or by the next 35; h - weekend program; this program can interrupt the daily program, but can be interrupted by ï Ç S. ___. 6 "the next opening time"; - security function which allows the lock to be opened after 5 days; - momentary stop function which allows the 05 lock to be closed for 15 or 30 minutes when a contactor is actuated; - an alarm function which blocks the lock according to any alarm; display of various hours and real time.

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Claims (13)

1. Time lock characterized in that it consists of a mechanical locking means (1) controlled by logic circuits. 2. Time lock according to claim 1 characterized in that the logic circuits are constituted by electronic circuits which perform the counting and clock functions, including the necessary resets. 3. Time lock according to claims 1 or 2 characterized in that the logic circuits allow programming of opening and / or closing hours repeatedly. 4. Time lock according to any one of the preceding claims, characterized in that the logic circuits allow temporary programming during which the so-called repetitive program is interrupted to make way for a so-called temporary program. 5. Time lock according to any one of the preceding claims, characterized in that the logic circuits have security functions. 6. Time lock according to any one of the preceding claims, characterized in that the logical cooked-currents are supplied by an independent energy source. 7. Time lock according to claim 6 - characterized in that the energy source is split, the logic circuits being designed so as to pass from one supply to another, in the event of a defect. 8. Time lock according to any one of the preceding claims, characterized in that it has means for reading, for example optical, the position of the locking bar of the safe. 9. Time lock according to any one of the preceding claims, characterized in that the mechanical locking means (1) consists of an element of -fC 11 __ i ft * 8 sliding block (3) controlled in its movement of va- back and forth, via a cam (13), by a motor actuated by the logic circuits. 10. Time lock according to any one of the preceding claims, characterized in that the sliding blocking element (3) is articulated (5) on a lever arm (9) whose tilting (11) is controlled by a cam (13) and which is provided with a counterweight (15) and / or a return spring (17). 11. Time lock according to any one of the preceding claims, characterized in that the motor is controlled so as to maintain the element (3) either in the blocking position or in the open position, depending on the angular position of its shaft, for example by means of contactors (micro-switch). 12. Time lock according to any one of the preceding claims, characterized in that the mechanical locking means (1) comprises a second system which comes into action, thanks to the logic circuits, when the first system fails, said second system controlling a second cam (20) which acts similarly to the first on the lever arm (9) at the opposite end from that comprising the first cam (13), relative to the tilting point 25 (11), said second system being arranged and controlled so as not to hinder the movements controlled by the-- said first system. 13. Time lock according to any one of the preceding claims, characterized in that its mechanical part is accessible only inside the safe. __ ^ yr /