FR2538837A1 - SYSTEM FORMING COMBINATION LOCK WITH DELAYED OPENING - Google Patents

Abstract

THE PRESENT INVENTION CONCERNS A SYSTEM FORMING A DELAYED OPENING COMBINATION LOCK. SUCH A SYSTEM IS CHARACTERIZED IN THAT IT INCLUDES AN ELECTRONIC DEVICE 2 FOR DISPLAYING THE BLOCKING TIME REMAINING BEFORE THE OPENING OF LOCK 1 AND TRIGGERED BY A CONTACTS BODY 10 ACTIVATED AT THE TIME WHEN THE OPENING COMBINATION IS COMPOSED . THE PRESENT INVENTION FOUND APPLICATION IN PROTECTED, SAFE OR SIMILAR SPACES WHOSE OPENING MUST BE DELAYED FOR SAFETY MEASURES.

Description

The present invention relates to a combination lock system for

delayed opening for rooms

  banks, safes or similar devices.

  Such locks are known, described, for example, in the French patent application No. 79 22477 filed

  September 7, 1979 on behalf of SARGENT & GREENLEAF,

  a mechanical timer put into operation at the moment when the combination of opening of the lock and

  defining a period during which the safe door

  This is only at the end of this period.

  that the door of the safe can be opened.

  Such a mechanism for delaying the opening of safes doors is in fact a security measure in that the time of action of any perpetrators of armed robbery of the bank is further delayed. the opening hours of it, such

  authors to operate normally in a very short time.

  Only these perpetrators of armed robbery,

  by summoning the employee (s) to open the safe door

  are not supposed to believe these employees' claims about the delayed opening of this door, which could expose employees to serious

  The present invention aims to improve

  drastically the disuasion effect that locks provide

? 5 with delayed opening.

  Ftrcela, the present invention provides a delayed opening combination lock system for locking doors of safes or the like during a

  predetermined period of time triggered when composing

  the combination of opening the lock, the system

  characterized by comprising an electronic device

  display of the blocking time remaining before the

  lock and triggered by a control device

  operated at the instant o is composed the combination

opening.

  According to another characteristic of the invention, the display device comprises a circuit to count down

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  counting the locking time of the lock determined by the predetermined period of time, displaying elements being connected at the output of the downward circuit and displaying

the remaining blocking time.

  The invention will be better understood, and other purposes,

  characteristics, details and advantages of it appear

  more clearly in the explanatory description

  which will follow made with reference to the accompanying schematic drawings given solely by way of example illustrating an embodiment of the invention, and in which: Figure 1 shows the display device according to the invention being connected to the lock to delayed opening suit; FIG. 2 represents the electronic diagram of the display device according to the invention; FIG. 3 represents a mobile terminal block for the electrical connection of the electronic display circuit.

according to the invention.

  Referring to FIG. 1, there is shown a combination lock 1 for vaults of banks,

  safes or similar devices incorporating

  (not shown) for setting periods of blocking of the safe door, these timers being

  put into service when the combination of

  key lock The structure and operation of such delayed opening combination locks are

  particularly described in the French patent application

NI 79 22477.

  An electronic display device 2 is also shown in this figure and is coupled with the lock 1 via a connecting cord 3 This display device, mounted conspicuously on the safe door, serves to display different information relating to the state of the lock 1 and is controlled from a control member 10 housed in the

  box of the lock 1 and comprising, for example, micro-

  mechanically operated contacts by the lock timer. The front face of the display device comprises an indicator 21, for example of green color, indicating the

  open position of the lock 1, an indicator 22, for example

  in red color, indicating the closed position of the lock, four displays 23 ad, each with seven segments, and intended to display a period of time remaining before the opening of the lock, the two displays 23 a, 23 b indicating the minutes while the displays 23c, 23d indicate the seconds The display can be completed by viewing means 24 adjacent to the displays 23 and indicating by a text silk screen "opening"

  of the lock 1 It should be noted that the means of visualization

  21 and 22, instead of being mere clairvoyants

  light indicating the open or closed position of the

  In addition, it is also possible to indicate by a silkscreen text the "open" and "closed" position of the lock 1. Lastly, a sound indicator 25 may also be mounted in the housing.

  display device for emitting an audible signal indicative of

  when the locking period of the lock has ended and the opening period begins Before entering the structure in more detail

  the electronic circuit of the display device, the system

  forming a delayed opening lock as shown

  Figure 1 works as follows.

  When the lock is in the closed state and its combination is not composed, only the red indicator

  22 is constantly lit. In this case, it may be desirable to

  table that the displays-23 permanently indicate a period of time set for example at 10 minutes When the staff of the bank must obtain the opening of the safe door, he must first dial the secret combination of the lock 1 At this moment, the

0 2 53883? 1

  delay mechanism of the lock 1 is put into service and simultaneously actuates a micro-contact of the organ of

  command 10 so as to start a decommissioning process.

  time previously displayed (from 10 minutes to

  23) Thus, the countdown is automatically

  latched and is displayed, second by second, to the displays.

  It should be noted that when the decommissioning process starts

  during the whole of the latter, the

  red 22 or the silkscreen text remains lit More

  triggering the countdown turns on the silkscreened text-

  display means 24 indicating that the opening of the lock will oppose in a time x When ends

  the counting process, that is to say when

  The indicators 22 will display zero minutes and zero seconds, the red LED 22 goes off and the visualization means 24 while the green LED 21 or the "open" screen printing text lights up. such a system, so we constantly visualize

  the remaining blocking time of the lock 1 before its opening.

  ture, the bright silk screen text "opening in" does not

  leaving no doubt as to the time remaining for the opening

  definitive note It should be noted that it is possible to turn off the display of the maximum time corresponding to the locking period of the lock out of the counting process, the display of this time then taking place at the moment of triggering the counting process It is also possible to associate the screen-printed texts appearing on the display means 21 and 22 with simple means

  green and red display external to the device

FILING.

  Figure 2 shows the electronic schematic of which the components can be mounted and wired on a

  circuit board located in the housing of the device

file 2.

  This electronic circuit is powered from a regulated continuous supply source 40, for example 12 volts As shown in this figure,

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  the display means 22 indicating the "closed" state of the lock is constituted by two parallel branches of

  electroluminescent diodes in series,

  carrying for example four diodes in series), the fourth diodes of each of the branches having their cathode connected

  at a point common to the collector of a transistor

  mutation T 1 whose emitter is connected to ground The anodes of the first diodes of each of the branches are connected to the positive potential respectively via

  of two resistors R1 and R2. Similarly, the visualization means

  21, indicating the open position of the sen urcompter two parallel branches of light emitting diodes in series (each branch comprising for example four diodes in series), the fourth diodes of these two branches being

  connected by their cathode, while the ano-

  of each of the first diodes of each branch are

  connected to the positive potential through resistance

  R 3 and R 4 It is understood that the particular configuration

  electroluminescent diodes located in each

  two display means 21 and 22 as shown in FIG.

  is shown in the figure is only symbolic and that this configuration is arranged to form the "open" screen printing text for the diodes of the display means 21 and "closed" for the display diodes of the medium 22.

  switching transistor T 1 has its base connected to two re-

  polarization sistances R 5 and R 6, the resistor R 5 being connected to the ground while the resistor R 6 is connected to the common point of the cathodes of the diodes of the medium

  The transistor T 1 is made normal

  the display means 22 corresponding to the "closed" position of the lock. The resistance R 6 is also

  connected to the collector of a second switching transistor

  T 2 whose transmitter is connected in series with a contact C 2 normally open The collector of the transistor T 2 is

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  also connected to a terminal of a sound indicator such

  a speaker 25 from the other terminal is connected to the

  The loudspeaker 25 may also be connected in parallel via contacts of the terminal block shown in FIG. 3 to a series arrangement of a resistor R 7 and a diode D 1. in series with a resistor R 8 connected to the positive potential at its cathode connected to the collector of the switching transistor T 1,

  this diode D 2 being connected to the resistor R 8 and to the

  transistor of this transistor by means of the terminal block of FIG. 3 It is understood that the diode D 1 makes it possible to postpone the "open" display of the lock simultaneously with the display means 21 while the diode D 2 makes it possible to

  postpone the "closed" visualization of the simultaneous lock.

  with the display means 22.

  The base of the switching transistor T 2 is connected

  at the exit of a flip-flop 50 via the

  R 9 latch 50 being made from two porb Is'INET "t 51 and 52 in a manner known per se The input of the port" NAND "51 is connected to the common point of connection of a capacitor C 3 and a resistance R 10 connected to the potential

  positive The capacitor C 3 is also connected parscna to re ex-

  at a resistor R11 connected to the positive potential, the common point of the resistor R 11 and the capacitor C 3 being connected to ground via a contact C 1

  normally open, the connection between this contact and the

  the common resistance and capacitor

  from the mobile terminal block of FIG.

  mune between the capacitor C 3 and the resistor R 10 is also

  connected to the two inputs of an "NI" 61 door whose

  output is connected to an input of a second "NI" gate 62.

  The other input of the NOR gate 62 is connected to the "NONKt" 52 port also connected to the resistor R 9, the output of this "NI" gate 62 being connected to the two inputs of a third "NI" gate. 63 The output of gate 'I' 63 is connected to a pre-positioning input (input

  "load") of a downcounter circuit 70.

  The second output of the bscule 50 (in fact the srte of the gate ", NAND 5) commands a clock pulse guiding circuit 80 (astable multivibrator circuit) sending clock signals

  at the "clock" input of the down-counter 70 The circuit 80 com-

  carries a "NON-EL'81" door having one of its inputs connected at the exit of the door "NN-ET" 51 and its other connected entrance

  at the common junction of a capacitor C 4 and a resistor

  R 12 connected to the output of the "N-EP" port 81 The other capacitor terminal C 4 is connected to the output of a "NAND" gate

  one of whose inputs is connected to the common junction -

  between the resistor R 13 and the output of the "NAND" gate 81 the other input of the "NAND" gate 82 is connected to the base of a switching transistor T 3 via a E

  resistor R 14 The switching transistor T 3 has its emitter

  connected to ground and its collector connected to cathodes

  of several parallel branches of iodine in

  four of them having their anodes connected to the positive potential respectively via

  four resistors R 15 to R 18 The four parallel branches

  the series of diodes form the medium of visualization

  24 and are therefore arranged in such a way as to

  to make the silkscreen text appear "open in"

  free gate of the "NAND" gate 52 is connected to a

output of the downcounter circuit 70.

  Figure 2 clearly represents the four

  23 to 23 d of the display circuit 23, the segments of E

  even four of these four displays are interconnected and

  Mected at each corresponding output of the down-counter circuit The display circuit 23 also comprises a point

  decimal powered by the resistance R 19 connected to the ground.

  In addition, the common anodes of the seven segments of each of the displays are connected at the output of the circuit of the

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  downward respectively via lines

11 to 14.

  The up-and-down circuit is connected by its four

  binary inputs A, B, C, D respectively at four outputs

  of a programming circuit 90 of the information relating to the desired blocking period defining the delay of the opening of the lock This circuit 90 comprises four resistors R 20 to R 23 connected on the one hand to ground

  and on the other hand at the inputs A, B, C, D of the downward circuit.

  The values of these resistors determine the desired value.

  of the blocking period which is thus programmed in

the downcounter circuit.

  It should be noted that the line 11 is linked to the ano-

  of four diodes D 3, D 4, D 5, D 6 of the programming circuit

  whose cathodes are respectively

  R 23, R 22, R 21 and R 20, while the line 12 is connected to the anodes of four diodes D 7, DS, D 9, D 10 having their cathodes respectively connected to the resistors R 23, R 22, R 21 and R 20 It is thus understood that the displays 23 a

  and 23 b indicate continuously, outside the process of decompo-

  the value of the unlocking period of the lock,

  the value can be for example 10 minutes The downward circuit is fed under a

  appropriate voltage by the device 100 comprising a

  C 5 densifier connected on the one hand with the positive potential of the

  tion and on the other hand to a resistance R 24 connected to the

  mass The common point between the capacitor C 5 and the resistor

  R 24 is connected to the two inputs of a NOR gate

  101 whose output is connected to a terminal of the circuit

down counter 70.

  The operation of the electronic circuit of the dis-

  Positive display results from the detailed description below.

  above and will therefore be explained briefly below.

  In the initial state, that is before the trigger

  During the countdown process, the period during which the lock must be blocked is displayed on the displays 23a.

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  23 b (ie 10 minutes) The transistor T 1 then conductive

  mute the diodes of the display means 22 which are thus lit, the transistor T 1 also bringing the diode D 2 to the conductive state, while the transistors T 2 and T 3 are blocked which implies the off state means of visualized

21, Dl and 24.

  When the combination of opening of the lock is composed, the contact C1 is closed, grounding the common junction of R11 and C3. A signal as represented in FIG. 2 appearing at the common junction of R 10 and C 3 following the load of C 3, the flip-flop 50 then changes state

  for starting the multivibrator 80 sending pulses

  The downward circuit will therefore receive at its input 'clock' up-down pulses of the period

  desired locking of the lock, the process of decompo-

  period of this period being displayed in displays 23 a to

  23 d During this de-counting period, the means of

  sualisation 22 and D 2 remain on while the

  tor T 3 is turned on to switch the diodes

  each of the branches of the visualization means 24

  constituting the silkscreen text "opening in".

  When the locking time of the lock is

  countdown, that is to say when the operation of the delay mechanism of the lock 1 ends, the transistor T 2 receives a command at its base and the contact

  C 2 closes, thus making transistor T 2 conductive.

  The conduction of T 2 blocks the transistor T 1 pro-

  thereby expelling the display means 22 and D 2, and making the diodes in series of the two branches of the display means 21 conductive, which is then lit to indicate the open state of the lock.

  visualization means 24 extinguishes as a result of the non-con-

  duction of transistor T conduction of transistor T 2

  also causes the loudspeaker 25 to emit a sound signal

  re indicating that the authorized opening period of the

lock begins.

  It goes without saying that the counting of the blocking time

  ge is related to the mechanism of delay of the lock 1, the rate of the countdown being adjusted adequately

  lock timer 1 by acting on the resistance

  13. In summary, each Say that one wishes to open the

  lock, the very fact of composing the combination (or

  mounting the delay mechanism) automatically and inevitably actuates the delay mechanism, this action also giving the starting impulse (by the contact C1) of the display countdown timer The start of the countdown of the blocking time is also indicated by the text screen printing "open in", leaving no doubt as to

  the remaining time for definitive opening, the other tex-

  you "closed" red light indicating that the lock is still in the closed position during countdown At the end of the programmed delay on the delay mechanism of the lock and on the downward circuit, an audible signal

  sound, the "open" green light indicates that the

  Authorized opening period begins.

  It is thus understood that the electronic display device of the invention makes the information credible

  relating to the delay in opening the trunk lock

  strong, thus having an effect of disuasion vis-à-vis

you aggressors.

  Finally, there is a safety device S

  connected via the terminal block of Figure 3 of

  to connect the display device of Figure 2 to a battery pack when a break in

  the power supply of the sector intervenes.

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Claims (8)

R E V E N D I C A T I 0 N S CLAIMS   1 Opening combination lock system   delayed action for locking safes doors or the like for a predetermined period of time triggered when the combination of the opening of the lock is composed, characterized in that it comprises an electronic device (2) for display of the blocking time remaining before the opening of the lock (1) and triggered by a control member (10) with contacts comprising a first contact actuated at the moment when is composed the opening combination.   System according to claim 1,   characterized in that the display device (2) pre-   quoted comprises a downcounting circuit (70) counting the aforementioned blocking time fixed by the aforementioned predetermined period of time, two display elements 23a to 23d connected at the output of the downward circuit and displaying the time blocking remaining supra.   3 System according to claim I or 2, characterized in that the first contact C 1 cited above of the control member (10) triggers a clock circuit   (80) sending clock signals to the decoding input   of the downward circuit (70) above.   System according to one of the preceding claims   cedeentes, characterized in that the information relating to the predetermined blocking period is programmed in   the downcounter circuit by a programming circuit (90).   System according to one of the preceding claims   cedeentes, characterized in that the first contact C 1   triggers the aforementioned clock circuit (80) through   a flip-flop circuit (50) which determines   also the operation in down counting mode of   above-mentioned displays (23 to 23 d) permanently displaying the aforementioned blocking period.   when the downcounter circuit is out of decompact mode floor.   System according to one of the preceding claims   cedeentes, characterized in that it comprises display means (22, D 2), such as light-emitting diodes, indicating the closed position of the lock (1) before and / or during the countdown period, said means of viewing being switched by a first transistor 1) normally conductive.   System according to one of the preceding claims   cedeentes, characterized in that the aforementioned control member (10) comprises a second contact (C 2) actuated at the end of the countdown period and connected in series with the emitter circuit of a second transistor (T 2) switching means of visualization (21, D 1), such as for example light-emitting diodes, of the open position of the lock   when the base of the transistor (T 2) receives a signal from the   baked rocker (50) supra.   8 System according to claim 7 or 8, characterized in that said second transistor (T 2) blocks said first switching transistor (T 1). when he is a driver.   System according to one of the preceding claims   cedeentes, characterized in that a third transistor (T 3 connected at the output of the flip-flop circuit (50), switches display means (24), such as for example   electroluminescent diodes, indicating the time of   remaining cage of the lock before opening.   System according to one of the preceding claims   cedeentes, characterized in that the control member (10)   mentioned above is housed in the lock (1) and is connected to the cir-   baked display (2) via a cord of link (3).