EP0528863B1 - Serrure a minuterie electronique et a action retardee, pourvue d'une came d'annulation automatique - Google Patents
Serrure a minuterie electronique et a action retardee, pourvue d'une came d'annulation automatique Download PDFInfo
- 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
- Authority
- EP
- European Patent Office
- Prior art keywords
- retracting
- cam
- bolt
- lever
- lock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Images
Classifications
-
- 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.
Landscapes
- Lock And Its Accessories (AREA)
- Measurement Of Predetermined Time Intervals (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
Claims (12)
- Serrure à action retardée dans le temps comprenant un boîtier de serrure (10) ayant un pêne (11) à ressort, une came de rétraction (19) ayant des moyens de rétraction (21) pour entrer en contact avec un levier de rétraction de pêne (23) pour rétracter une extrémité de verrouillage (11′) dudit pêne dans ledit boîtier, des moyens d'actionnement de came de rétraction (14) disposés à l'extérieur dudit boîtier pour faire tourner ladite came, caractérisé par la combinaison d'une came de support actionnée par moteur (30) pour supporter normalement ledit levier de rétraction de pêne dans une position débrayée par rapport à ladite came de rétraction, des moyens de commutation (32) associés à ladite came de rétraction pour activer un circuit temporisateur (50) pour déclencher un premier comptage d'un délai de temps prédéterminé, un moteur électrique (38) relié à ladite came de support (30) de levier de rétraction, ledit temporisateur (50) amenant ledit moteur à être alimenté après ledit délai de temps prédéterminé, en conséquence de quoi ledit moteur (38) fait tourner ladite came de support dans un premier sens pour amener ledit levier de rétraction (23) à se déplacer dans une position de mise en contact pour une entrée en contact avec ladite came de rétraction (19), ledit circuit temporisateur (50) déclenchant un deuxième comptage d'un délai de temps prédéterminé après avoir terminé ledit premier comptage, après quoi ledit moteur (38) est alimenté pour amener ladite came de support (30) à tourner dans un sens inverse pour supporter ledit levier de rétraction dans sa position débrayée, que ledit levier de rétraction soit rétracté ou non par ladite came de rétraction (19).
- Serrure à action retardée dans le temps selon la revendication 1, dans laquelle il en outre prévu un interrupteur d'annulation de temporisateur (34) qui est actionné par la rétraction dudit pêne de serrure (11) par ledit levier de rétraction de pêne (23) afin d'annuler ainsi automatiquement ledit deuxième comptage de délai de temps prédéterminé et pour amener ledit moteur (38) à être alimenté et à faire tourner la dite came de support (30) dans ledit sens inverse afin de la placer dans une position pour supporter ledit levier de rétraction de pêne (23) dans ladite position débrayée une fois que ladite came de retraction (19) a été libérée.
- Serrure à action retardée dans le temps selon la revendication 2, dans laquelle lesdits moyens de rétraction sont une pièce en forme de crochet (20) formée avec ladite came de rétraction (19), ledit crochet entrant en contact avec une encoche de rétraction (22) formée avec ledit levier de rétraction de pêne (23).
- Serrure à action retardée dans le temps selon la revendication 3, dans laquelle lesdits moyens de commutation (32) comprennent un contact d'interrupteur (36) positionné dans le trajet de ladite pièce en forme de crochet de la came de rétraction, de sorte que ladite pièce en forme de crochet s'appuie sur ledit contact quand elle tourne sous l'effet desdits moyens d'actionnement dans une position d'activation de temporisateur.
- Serrure à action retardée dans le temps selon la revendication 4, dans laquelle lesdits moyens d'actionnement de came de rétraction (14) comprennent des moyens manoeuvrables à la main (12) pouvant être reliés audit arbre (18).
- Serrure à action retardée dans le temps selon la revendication 5, dans laquelle lesdits moyens d'actionnement sont un cylindre à clé (14), ledit cylindre (14) étant mis en rotation par une clé correspondante (12) insérée dans une fente pour clé (13) dudit cylindre, ladite clé constituant lesdits moyens manoeuvrables à la main.
- Serrure à action retardée dans le temps selon la revendication 3, dans laquelle ladite came de rétraction de pêne (19) a une extrémité libre munie d'un bord de guidage (41) qui est en contact de coulissement à friction avec une portion d'extrémité dudit levier de rétraction (23) quand elle est déplacée contre elle en faisant tourner ladite came de rétraction (19), lesdits levier de rétraction (23) et came de rétraction (19) étant fixés dans un plan commun.
- Serrure à action retardée dans le temps selon la revendication 7, dans laquelle une pièce (28) pouvant entrer en contact avec une came est fixée audit levier de rétraction (23) et disposée de manière à entrer en contact de friction avec ladite came de support actionnée par moteur (30) pour déplacer et supporter ledit levier de rétraction de pêne (23) dans ladite position débrayée.
- Serrure à action retardée dans le temps selon la revendication 8, dans laquelle la pièce pouvant entrer en contact avec une came est une broche (28) fixée audit levier de rétraction de pêne (23), ladite broche (28) ayant une extrémité libre (31) disposée à proximité immédiate d'un bras de contact d'interrupteur (32) dudit interrupteur d'annulation de temporisateur (34) et en contact de friction avec lui afin d'amener ledit bras de contact (32) à effectuer une fermeture d'interrupteur quand ledit levier de rétraction de pêne (23) est rétracté par ladite came de rétraction (19).
- Serrure à action retardée dans le temps selon la revendication 1, dans laquelle ladite came de support actionnée par moteur (30) a une section périphérique de support (29) pour supporter ledit levier de rétraction de pêne (23) dans ladite position débrayée.
- Serrure à action retardée dans le temps selon la revendication 10, dans laquelle une broche (28) pouvant entrer en contact avec une came est fixée audit levier de rétraction de pêne (23) et s'étend vers un de ses côtés, ladite came de support (30) étant en forme de disque et disposée sur un côté dudit levier de rétraction de pêne (23) pour entrer en contact de support avec ladite broche (28) quand ladite section de support (29) est déplacée contre elle par rotation de ladite came au moyen dudit moteur électrique (38).
- Serrure à action retardée dans le temps selon la revendication 1, dans laquelle ledit circuit de temporisation (50) est un temporisateur électronique ayant deux modules de temporisation (52, 53) pour effectuer lesdits premier et deuxième comptages de délais de temps prédéterminés, ledit temporisateur électronique (50) étant muni d'une pluralité d'interrupteurs réglables (60) pour régler lesdits comptages de délais de temps à des délais souhaités.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2017150 CA2017150C (fr) | 1990-05-18 | 1990-05-18 | Verrou a retard a came d'annulation automatique pour minuterie electronique |
CA2017150 | 1990-05-18 | ||
PCT/CA1991/000161 WO1991018167A1 (fr) | 1990-05-18 | 1991-05-10 | Serrure a minuterie electronique et a action retardee, pourvue d'une came d'annulation automatique |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0528863A1 EP0528863A1 (fr) | 1993-03-03 |
EP0528863B1 true EP0528863B1 (fr) | 1994-08-17 |
Family
ID=4145018
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91908894A Expired - Lifetime EP0528863B1 (fr) | 1990-05-18 | 1991-05-10 | Serrure a minuterie electronique et a action retardee, pourvue d'une came d'annulation automatique |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0528863B1 (fr) |
AU (1) | AU653936B2 (fr) |
BR (1) | BR9106471A (fr) |
CA (1) | CA2017150C (fr) |
DE (1) | DE69103523T2 (fr) |
ES (1) | ES2057891T3 (fr) |
WO (1) | WO1991018167A1 (fr) |
Cited By (1)
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)
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)
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. |
-
1990
- 1990-05-18 CA CA 2017150 patent/CA2017150C/fr not_active Expired - Fee Related
-
1991
- 1991-05-10 BR BR919106471A patent/BR9106471A/pt unknown
- 1991-05-10 AU AU77804/91A patent/AU653936B2/en not_active Ceased
- 1991-05-10 ES ES91908894T patent/ES2057891T3/es not_active Expired - Lifetime
- 1991-05-10 EP EP91908894A patent/EP0528863B1/fr not_active Expired - Lifetime
- 1991-05-10 WO PCT/CA1991/000161 patent/WO1991018167A1/fr active IP Right Grant
- 1991-05-10 DE DE69103523T patent/DE69103523T2/de not_active Expired - Fee Related
Cited By (1)
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 (fr) | 1993-03-03 |
DE69103523T2 (de) | 1994-12-08 |
CA2017150A1 (fr) | 1991-11-18 |
WO1991018167A1 (fr) | 1991-11-28 |
BR9106471A (pt) | 1993-05-18 |
CA2017150C (fr) | 1993-10-05 |
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