EP0528863B1 - Mit verzögerung arbeitendes elektronisches zeitschloss mit automatisch arbeitenden rückstellnocken - Google Patents

Mit verzögerung arbeitendes elektronisches zeitschloss mit automatisch arbeitenden rückstellnocken Download PDF

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Publication number
EP0528863B1
EP0528863B1 EP91908894A EP91908894A EP0528863B1 EP 0528863 B1 EP0528863 B1 EP 0528863B1 EP 91908894 A EP91908894 A EP 91908894A EP 91908894 A EP91908894 A EP 91908894A EP 0528863 B1 EP0528863 B1 EP 0528863B1
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EP
European Patent Office
Prior art keywords
retracting
cam
bolt
lever
lock
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Expired - Lifetime
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EP91908894A
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English (en)
French (fr)
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EP0528863A1 (de
Inventor
Claude Legault
Pierre Deguire
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Individual
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B43/00—Time locks
    • E05B43/005—Timer devices controlling electrically operated locks

Definitions

  • the present invention relates to an improved delay action time lock and wherein an electronic timer is provided having adjustable features whereby to preset two time delay periods, the first one being actuated by turning a key cylinder or combination lock cylinder to an open position, and the second being effectuated immediately after the first time delay period is terminated or as soon as a bolt retracting lever is retracted to pull the lock bolt within the lock housing.
  • Another feature of the present invention is to provide an improved delay action time lock which is easy to operate by the user and easy to service due to its modular construction.
  • the present invention provides a delay action time lock comprising a lock housing having a spring action bolt.
  • a retracting cam is also provided and has a retracting means for engagement with a bolt retracting lever for retracting a locking end of the bolt in the housing.
  • Retracting cam actuating means is disposed outside the housing for turning the cam.
  • a motor actuated support cam is provided for normally supporting the bolt retracting lever in a disengaged position with the retracting cam.
  • Switch means is associated with the retracting cam for enabling a timer circuit to initiate a first preset time delay count.
  • An electric motor is connected to the retracting lever support cam.
  • the timer causes the motor to be energized after the preset time delay whereby the motor will turn the support cam in a first direction to cause the retracting lever to move to an engageable position for engagement by the retracting cam.
  • the timer circuit initiates a second preset time delay count after terminating the first count after which the motor is energized to cause the support cam to turn in a reverse direction to support the retracting lever at its disengaged position whether the retracting lever is retracted or not by the retracting cam.
  • FIG. 1 illustrates the delay action time lock of the present invention.
  • This Figure illustrates the modular construction of the lock and it comprises a lock housing 10 in which is housed the locking mechanism to retract the locking end 11′ of the lock bolt 11 into the housing 10 whereby to open a door (not shown) to which the lock housing is secured.
  • the bolt end 11′ is retracted by turning the key 12 which is inserted in the keyhole 13 of the lock cylinder 14.
  • a timer housing 15 is secured to the lock housing at a convenient location and is provided with a window opening 16 in which are disposed a plurality of dip switches 17 to provide adjustment of preset time delays of the timer modules, which will be described later, provided in the electronic timer circuit.
  • the key 12 is inserted in the keyhole 13 and the key cylinder 14 is turned clockwise, until the key is arrested.
  • This initiates a first preset time delay count by the timer circuit and after which time a signal, either audible or visual, is generated to indicate to the operator that the key can now be positioned to retract the bolt end 11′ into the housing.
  • the timer circuit initiates a second time delay count and the lock bolt must be retracted by the key within that period. If not, rotation of the key 12 will not engage the necessary levers to retract the locking end 11′ of the bolt within the housing. If the lock bolt is retracted, then the second count is automatically cancelled and as soon as the lock bolt is released, the key or the key cylinder is disengaged from the bolt retracting mechanism.
  • the lock cylinder 14 is connected to a shaft 18 on which is secured a bolt retracting cam 19.
  • the cam is provided with a hook member 20, formed integral therewith, and having an engaging end 21 whereby to engage with a retracting notch 22 provided in a bolt retracting lever 23 which is connected to the lock bolt 11.
  • the lock bolt is a spring action lock bolt and the bolt is biased outwardly by a helical spring 24, in a manner well known in the art.
  • the bolt retracting lever 23 is connected to the bolt 11 on a pivot pin 25.
  • the bolt retracting lever 23 is biased downwardly by means of helical spring 26.
  • the free end portion 27 of the retracting lever 23 is provided with a support pin 28 extending transversely thereto (see Fig. 6) and on which a peripheral edge portion 29 of the motor actuated support cam 30 abuts whereby to displace and support the bolt retracting lever 23 at a disengaged position as shown in Figure 2.
  • the cam engageable pin 28 has a free end 31 which is disposed in close proximity to a switch contact arm 32 of a timer cancellation switch 34 constituted by a microswitch.
  • the free end 31 of the pin 28 is engaged in frictional contact with the switch contact arm 32 when the retracting lever 23 is retracted in the direction of arrow 33 when the lock bolt end 11′ is retracted within the housing. Disengagement causes the switch contact arm 32 to effect a switch closure to cancel the second preset count of the timer.
  • the key 12 is inserted into the key slot 13 and the lock cylinder 14 is rotated causing the bolt retracting cam 19 to turn in the direction of arrow 35 as shown in Figure 3.
  • the cylinder or key 12 is turned until it is arrested when the hook arm 20 of the cam 19 abuts with the switch contact post 36.
  • the switch contact post 36 as shown in Figure 6, is provided in an electrically insulating casing 37 and an insulated wire 38′ is connected thereto and to the appropriate connection in the timer circuit.
  • This contact closure initiates a first preset time delay count and after this count, an appropriate indication, either an audible or visual indication, is transmitted so that the user is now aware of the expiration of the first preset time delay count.
  • the key 12 is turned to its initial position placing the bolt retracting cam 19 to its position as shown in Figure 2. This retraction could have been done also immediately after the hook arm 20 has made contact with the contact pin 36.
  • the timer circuit connects a six-volt supply to the motor 38, which is connected to the motor actuated support cam 30, causing the cam to rotate a predetermined distance in the direction of arrow 39 (as shown in Fig.
  • the hook member 20 can still be positioned back at its original position as shown in Figure 2 by simply rotating it in a counterclockwise manner. Because the bolt retracting cam 19 is disposed in a common plane with the bolt retracting lever 23, when rotating the bolt retracting cam in a counter direction, the rear top edge 41 of the hook member 20 will abut against the sloped wall 42 formed on the lower edge of the free end portion 27 of the retracting lever to push the bolt slightly upwardly so that the hook member 20 can be positioned to engage the notch 22.
  • the support cam 30 is automatically actuated by the motor 38 and this engages with the support pin 28 and pushes the bolt retracting lever 23 back to its initial disengaged position as shown in Figure 2. It is therefore necessary to again reactivate the first preset time count of the electronic timer and wait for the delay period before the retracting lever can again be engaged.
  • the motor actuated support cam 30 is a disc-shaped cam which has a circular support cam portion 29 for engagement with the support pin 28 and a cut-out portion 43 to liberate the bolt retracting lever 23.
  • the disc is also provided with a slot 44 not to interfere with the contact pin 36.
  • a disc support cam is also offset from the plane of the bolt retracting lever 23.
  • the timer 50 consists of a small electronic circuit connected to the servo-motor 38 and a six-volt battery 51. It is in fact a double timer; the first one 52 controls the time until the lock is permitted to open, and the second timer 53, the time during which the lock can be opened.
  • the timer circuit 50 is turned on by rotating the lock key 12 clockwise and returning it to its initial position.
  • the timer 52 starts and, at the expiration of its preset time, the motor's shaft 38′ rotates by 90 degrees. This allows a door to be opened by the lock.
  • the second timer 53 starts and, at the expiration of the second preset time, the motor returns to its initial position, and the timer circuit turns itself off. If, during the second preset time the door is opened by the lock, the motor 38 immediately returns to its original position and the circuit turns itself off. The timer is then ready for another cycle.
  • the timers 52 and 53 are fully adjustable, anywhere from seconds to days. The accuracy of the timer is excellent, with less than 10 seconds of error per day.
  • the timer circuit 50 has two sections: the first section consisting of the supply and protection diode 54 and a flip-flop circuit 55 which is continuously powered from the six-volt battery.
  • the second one, the timer per se, is powered from the circuit 55.
  • the drain from the battery is in the order of 10 micro-amperes and represents only a fifth of the battery capacity over a one-year period.
  • Flip-flop circuit 55 acts as an electronic switch which is turned on by a contact closure with pin 36 operated by the lock key, and turned off by the timer circuit itself at the end of a timing cycle.
  • An oscillator/counter integrated circuit 56 is also provided and is controlled by a very stable crystal 57.
  • the counter 56 has fifteen divide-by-two stages and provides outputs at 60, 10 and 1 Hz.
  • the 1 Hz output 58 is used as a clock for the entire circuit and is distributed to integrated circuits U2, U4, U5 and U6.
  • U2 and U3 form an 18- stage counter operated at 1 Hz.
  • U7A clears U2, U3, U4B, U5A and U5B, and sets U4A.
  • U8 and U9 decode specific times by adding the outputs selected by the dip switches.
  • Timer 53 can thus be adjusted from 1 to 255 seconds in steps of one second, and timer 52 from 32 to 262, 143 seconds (72.8 hours) in steps of 32 seconds. Any gate input not connected to the counter while a switch is open is pulled up to +V by the resistor network 59.
  • U9-9 drops low and sets U4B and U5A thus enabling U8 in preparation for the timing operation of timer 53.
  • U4A is reset. This signals the motor to turn by providing a low on the drive signal to U10.
  • the counters U2 and U3 are cleared via U7C.
  • U9-9 returns to a high and 0.5 seconds later, U4A is set. This releases the counters which are now timing the preset time of timer 53.
  • the setting of U4A would normally force the motor back to its original position but U7D and transistors Q1, Q2 insure that the power is only applied to the motor for the duration of the drive signal.
  • U4B is reset. This disables T2 and resets U5A on the next positive clock edge, enabling U7B. This causes the power to be reapplied to the motor via U7D, Q1 and Q2 returning it to its original position. A second later, U6A toggles and removes the power from the timer circuit.
  • U4B If, during the preset time period of timer 53, the "Open" line is pulled low by the opening of the lock door, U4B is cleared. Again, this disables timer 53 and resets U5A on the next positive clock edge, thus enabling U7B. This causes the power to be applied to the motor via U7D, Q1 and Q2 which returns it to its original position. A second later, U6A toggles and removes the power from the timer circuit.
  • U10A and U10B are both power amplifiers designed to drive the servo-motor.
  • the feedback potentiometer VR1 is mechanically linked to the output shaft of the motor. It drives the amplifier with a voltage proportional to the shaft's position.
  • U10A forces some current to the motor which rotates until the voltage at VR1 reaches a point corresponding to a 90 degree rotation.
  • U10B forces current in the opposite direction until the voltage at VR1 has returned to its original value. In any event, the power is only applied to the motor and to U10 and VR1 for the duration of half a clock period or 0.5 seconds.
  • lock cylinder is hereinshown as a key operated cylinder, it is also obvious to a person skilled in the art that this cylinder could be operated by a combination lock using tumblers whereby after a combination is preset, the knob can be positioned in engagement with the shaft 18 of the bolt retracting cam 19.

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  • Lock And Its Accessories (AREA)
  • Measurement Of Predetermined Time Intervals (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Claims (12)

  1. Mit Verzögerung arbeitendes Zeitschloß mit einem Schloß-Gehäuse (10), das einen federbelasteten Bolzen (11) aufweist, einem Rückstellnocken (19) mit Rückzugsmitteln (21) für den Eingriff mit einem Bolzen-Rückzugshebel (23) zum Zurückziehen eines Verriegelungsendes (11′) des Bolzens in das Gehäuse, außerhalb des Gehäuses angeordneten Rückstellnocken-Betätigungsmitteln (14) zum Drehen des Nockens, gekennzeichnet durch die Kombination aus einem motorbetätigten Stütznocken (30), der dazu dient, den Bolzen-Rückzugshebel normalerweise in einer von dem Rückstellnocken gelösten Position abzustützen, dem Rückstellnocken (19) zugeordneten Schaltmitteln (32) zum Aktivieren einer Zeitgeberschaltung (50) zum Beginnen einer ersten voreingestellten Verzögerungszeitzählung, einem mit dem Rückzugshebel-Stütznocken (30) verbundenen Elektromotor (38), wobei der Zeitgeber (50) den Motor nach der voreingestellten Verzögerungszeit einschaltet, wodurch der Motor (38) den Stütznocken in einer ersten Richtung dreht, um den Rückzugshebel (23) zu veranlassen, sich in eine Eingriffsbereitschaftsposition für den Eingriff des Rückstellnockens (19) zu bewegen, wobei die Zeitgeberschaltung (50) nach Beendigung der ersten Zählung eine zweite voreingestellte Verzögerungszeitzählung beginnt, nach der der Motor (38) eingeschaltet wird, um den Stütznocken (30) in einer Rückwärtsrichtung zu drehen, um den Rückzugshebel unabhängig davon, ob er durch den Rückstellnocken (19) zurückgezogen wird oder nicht, in seiner gelösten Stellung abzustützen.
  2. Mit Verzögerung arbeitendes Zeitschloß nach Anspruch 1, bei dem weiterhin ein Zeitgeber-Lösch-Schalter (34) vorgesehen ist, der durch das Zurückziehen des Verriegelungsbolzens (11) durch den Bolzen-Rückzugshebel (23) betätigt wird, um dadurch automatisch die zweite voreingestellte Verzögerungszeitzählung zu beenden und den Motor (38) einzuschalten, um den Stütznocken (30) in der Rückwärtsrichtung zu drehen, um ihn in eine Position zur Abstützung des Bolzen-Rückzugshebels (23) in der gelösten Stellung zu bringen, nachdem der Rückstellnocken (19) einmal freigegeben wurde.
  3. Mit Verzögerung arbeitendes Zeitschloß nach Anspruch 2, bei dem das Rückzugsmittel ein an dem Rückstellnocken (19) ausgebildetes Hakenelement (20) ist, welcher Haken in eine an dem Bolzen-Rückzugshebel (23) ausgebildete Rückzugskerbe (22) eingreift.
  4. Mit Verzögerung arbeitendes Zeitschloß nach Anspruch 3, bei dem das Schaltmittel (32) einen im Weg des Hakenelements des Rückstellnockens angeordneten Schaltkontakt (36) aufweist, so daß das Hakenelement an dem Kontakt anschlägt, wenn es durch die Betätigungsmittel in eine Zeitgeber-Aktivierungsstellung gedreht wird.
  5. Mit Verzögerung arbeitendes Zeitschloß nach Anspruch 4, bei dem die Rückstellnocken-Betätigungsmittel (14) ein mit der Welle (18) verbindbares handbetätigbares Mittel (12) aufweisen.
  6. Mit Verzögerung arbeitendes Zeitschloß nach Anspruch 5, bei dem das Betätigungsmittel ein Schließzylinder (14) ist, der durch einen passenden, in einen Schlüsselschlitz (13) dieses Zylinders eingeführten Schlüssel (12) gedreht wird, welcher Schlüssel das handbetätigbare Mittel bildet.
  7. Mit Verzögerung arbeitendes Zeitschloß nach Anspruch 3, bei dem der Bolzen-Rückstellnocken (19) ein freies Ende besitzt, das mit einer Führungskante (41) versehen ist, die mit einem Endabschnitt des Rückzugshebels (23) in gleitender Reibberührung steht, wenn sie durch Drehen des Rückstellnockens (19) dagegen bewegt wird, wobei der Rückzugshebel (23) und der Rückstellnocken (19) in einer gemeinsamen Ebene gehalten sind.
  8. Mit Verzögerung arbeitendes Zeitschloß nach Anspruch 7, bei dem an dem Rückzugshebel (23) ein Nockenfolgerglied (28) befestigt und zur Reibberührung mit dem motorbetätigten Stütznocken (30) angeordnet ist, um den Bolzen-Rückzugshebel (23) in die gelöste Stellung zu bewegen und dort abzustützen.
  9. Mit Verzögerung arbeitendes Zeitschloß nach Anspruch 8, bei dem das Nockenfolgerglied ein an dem Bolzen-Rückzugshebel (23) befestigter Stift (28) ist, der ein freies Ende (31) besitzt, das dicht an einem Schalter-Kontaktarm (32) des Zeitgeber-Lösch-Schalters (34) angeordnet ist und mit diesem in Reibberührung kommt, um den Kontaktarm (32) zu veranlassen, ein Schließen des Schalters zu bewirken, wenn der Bolzen-Rückzugshebel (23) durch den Rückstellnocken (19) zurückgezogen wird.
  10. Mit Verzögerung arbeitendes Zeitschloß nach Anspruch 1, bei dem der motorbetätigte Stütznocken (30) einen Umfangs-Stützabschnitt (29) zum Abstützen des Bolzen-Rückzugshebels (23) in der gelösten Stellung aufweist.
  11. Mit Verzögerung arbeitendes Zeitschloß nach Anspruch 10, bei dem ein Nockenfolger-Stift (28) an dem Bolzen-Rückzugshebel (23) befestigt ist und sich zu einer Seite desselben erstreckt, wobei der Stütznocken (30) scheibenförmig ist und auf einer Seite des Bolzen-Rückzugshebels (23) angeordnet ist, um den Stift (28) stützend zu berühren, wenn der Stützabschnitt (29) durch Drehung desselben mit Hilfe des Elektromotors (38) dagegen bewegt wird.
  12. Mit Verzögerung arbeitendes Zeitschloß nach Anspruch 1, bei dem die Zeitgeberschaltung (50) ein elektronischer Zeitgeber mit zwei Zeitgeber-Modulen (52, 53) zum Ausführen der ersten und zweiten voreingestellten Verzögerungszeitzählungen ist, wobei der elektronische Zeitgeber (50) mit mehreren einstellbaren Schaltern (60) zum Einstellen der Verzögerungszeitzählungen auf gewünschte Verzögerungen versehen ist.
EP91908894A 1990-05-18 1991-05-10 Mit verzögerung arbeitendes elektronisches zeitschloss mit automatisch arbeitenden rückstellnocken Expired - Lifetime EP0528863B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA 2017150 CA2017150C (en) 1990-05-18 1990-05-18 Delay action electronic timer lock with automatic cancellation cam
CA2017150 1990-05-18
PCT/CA1991/000161 WO1991018167A1 (en) 1990-05-18 1991-05-10 Delay action electronic timer lock with automatic cancellation cam

Publications (2)

Publication Number Publication Date
EP0528863A1 EP0528863A1 (de) 1993-03-03
EP0528863B1 true EP0528863B1 (de) 1994-08-17

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EP91908894A Expired - Lifetime EP0528863B1 (de) 1990-05-18 1991-05-10 Mit verzögerung arbeitendes elektronisches zeitschloss mit automatisch arbeitenden rückstellnocken

Country Status (7)

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EP (1) EP0528863B1 (de)
AU (1) AU653936B2 (de)
BR (1) BR9106471A (de)
CA (1) CA2017150C (de)
DE (1) DE69103523T2 (de)
ES (1) ES2057891T3 (de)
WO (1) WO1991018167A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6741826B2 (en) 2002-06-26 2004-05-25 Xerox Corporation Cam motion design without drivetrain backlash reversal

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9727545D0 (en) * 1997-12-31 1998-03-11 Mmad Limited Improvements in or relating to packaging

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH664794A5 (fr) * 1985-03-29 1988-03-31 Relhor Sa Dispositif de levee d'interdiction conditionnelle de la manoeuvre d'une serrure.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6741826B2 (en) 2002-06-26 2004-05-25 Xerox Corporation Cam motion design without drivetrain backlash reversal

Also Published As

Publication number Publication date
AU7780491A (en) 1991-12-10
ES2057891T3 (es) 1994-10-16
DE69103523D1 (de) 1994-09-22
AU653936B2 (en) 1994-10-20
EP0528863A1 (de) 1993-03-03
DE69103523T2 (de) 1994-12-08
CA2017150A1 (en) 1991-11-18
WO1991018167A1 (en) 1991-11-28
BR9106471A (pt) 1993-05-18
CA2017150C (en) 1993-10-05

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