WO1985000190A1

WO1985000190A1 - Remote-controlled electric lock

Info

Publication number: WO1985000190A1
Application number: PCT/FR1984/000144
Authority: WO
Inventors: Jean Arouete
Original assignee: Arouete J
Priority date: 1983-06-22
Filing date: 1984-06-05
Publication date: 1985-01-17
Also published as: EP0130101A1; FR2547851A1; DE3471335D1; ATE34423T1; FR2547851B1; EP0130101B1; AU3018084A

Abstract

Electro-mechanical locking device enabling the remote-controlled closing even if the bolt is not exactly facing the striker, i.e. when the door is incompletely brought back to its closure position. It is comprised of an electro-magnet (20) attracting a movable plate (4) which, by a double obliquity slot (17), mobilizes a ball-bearing (6) which projects a bolt (2) into a striker with two ball-bearings to facilitate the relative bolt-striker positioning. A stud (27) driven by an electro-magnet may block the mechanism of the lock. The invention is particularly intended to the remote-controlled electro-mechanical locking of locks of buildings, of lock-chambers in banks, of emergency exits in public places and of all kinds of doors in general.

Description

ELECTRIC REMOTE CONTROLLED LOCK

The invention relates to an electric lock allowing a remote control for opening and closing the door, comprising one or two electromagnets cooperating with a bolt by means of metallic transmission means and ball bearings.

In traditional electric locks, especially those that require a high rate of use (bank airlock doors), the metal parts rub against each other, causing wear and seizure, therefore requiring frequent maintenance.

Another possible use is that of security locking of emergency exits in public places; in a department store for example, during the presence of the public, the emergency doors must be free of passage, open according to security regulations: "by simple push" but then, they are borrowed for fraud or theft. To avoid this, operators lock and put in danger in the event of a fire. It is therefore necessary to find a remote-controlled electric lock, but which nonetheless respects the legal recommendation: "openable by simple push", that is to say a lock that can be pushed in despite the electromagnet being retained, the force necessary for the door depression remaining to be defined. When in the same department store, closing time comes, in the evening, the emergency doors become ordinary doors that must be locked in an anti-theft situation, mechanically, securely, not forced. The Store Manager must therefore send an employee to go around the doors to make this change in type of locking. This is the possible time for this employee to pass stolen objects through this door. The ideal for this Store Manager is to carry out these maneuvers and change the locking situation by remote control, from his office, without the doors themselves .......... ... cannot open.

The present invention therefore provides a remote-controlled electric lock, with a high rate of operation, closing correctly on its strike even in the event of insufficiency of the door reminder device called "groom", which can make up for an offset of I to 2 cm, whereas a single millimeter is enough for an electric strike to fail. In this use, the lock is kept closed by the presence of current and can be opened by cutting the current. The present invention also provides an electric anti-panic lock, legally conforming, that is to say pushing in despite of the electric locking, the force required to push in being adjustable from 0 to infinity by several means combined, at level of the strike plate, at the level of the mechanical transmission, at the level of the electromagnet, this allowing the operator of a public place to meet any requirement or whim of the safety commissions who remain sole judges beyond the legal texts, for each specific case, in terms of locking emergency exits.

The present invention also provides an electric lock for emergency exits from non-permanent public places, lock transformable by remote control into normal tamper-proof lock except by break-in, instant transformation carried out without opening the door, the lock then becoming a lock either by permanent presence of current but a lock which can be locked and unlocked by impulse, the same lock which can, in the event of a total power failure, be mechanically rescued by a key preventing the door from blocking while waiting for the maintenance service.

The invention is set out below in more detail with the aid of drawings. FIG. I shows an exploded view of the main parts comprising the frame I of the lock, the bolt 2 held between the spacers I0, II and I2 on which is fixed a fixed plate 3. On one side of the bolt are fixed by a screw 7, two ball bearings 5 and 6 with interposed washers allowing the locking of the 2 bearings by their internal wheel, the external wheel remaining free to rotate. These 2 bearings will be the articulation around from which, thanks to the fixed plate 3 and a movable plate 4, an electromagnet will transmit its movement in a movement perpendicular to its axis. The ball bearing 5 will guide the bolt rolling in the oblong slot I3 whose length determines the stroke of the bolt and whose width is 0.2 to 0.3 mm greater than the outside diameter of the bearing so that the latter can roll on either edge of the slot, without friction of metal parts. The ball bearing 6 will roll in an oblique slot I7 of the movable plate 4. The latter is mobilized, guided by the two ball bearings I0 a and II fixed integrally to the fixed plate by the screws of the spacers I0 and II , the bearings being blocked by their internal wheel, the external wheel remaining free to rotate. The movable plate 4. has 2 oblong slots I4. and I5, the length of which determines the stroke of this movable plate and the width of which exceeds the outside diameter of the bearings by 0.2mm, so that, depending on the mechanical movements and stresses printed during the raising and lowering of the bolt, the bearings I0 has and II a will roll on one or the other of the edges of the slots I4. and I5 avoiding any friction on the movable plate.

The oblique slot 17 of the movable plate has a width of 0.2 to 0.3mm greater than the outside diameter of the bearing 6. The obliquity of this slot is such that during the movement of the movable plate in one direction or in the other, it causes the ascent and descent or rather the re-entry and exit of the bolt 2 out of the lock. The bearing 6 rolling on one or other of the edges of the slot. The mechanical assembly using the ball bearings therefore differentiates the present invention from the art described in the USAN patent I.736.76I.

The oblique slot 17 has 2 slopes. The long one 17 has, at about 45 degrees of angle with the edge I8, the second slope I7 b, short, of end of travel, makes with the same edge an angle of 10 to 15 degrees, angle of the same sign, that is to say that during the movement of the bearing in the slot I7 with double slope, crossing from one slope to another does not change the direction of movement of the bolt which differentiates the present invention from the art earlier, in USAN patent 1,946,384. in which not only is there no use of ball bearings, but also a similar oblique slot has a change of angle at the end of the stroke but this change of angle changes the direction of travel of the bolt and makes this lock totally unbreakable unlike the lock of the present invention.

According to another embodiment of this device, the spacers IO, II and I2 each comprise one or two ball bearings IO b, IO c, II b, II c, I2 b, I2 c, facilitating the movements of the bolt 2, rolling on the outer wheels of these bearings.

According to Figure 2, the movable plate 4. is attached to the plunger core 2I of an electromagnet 20. In this figure, the lock is in the locked position. The core 21 came to bonding? THE SPRING 22 is compressed and the movable plate has been attracted towards the electromagnet, the bearing 6 rolling in the slot 17 has caused the bolt 2 to protrude out of the lock. FIG. 3 shows the unlocked lock, electromagnet 20 not supplied, the spring 22 has driven the movable plate-core 2I assembly. The ball bearing 6 has rolled on the corresponding side of the slot I7 and has caused the retraction of the bolt 2 (dotted line in the figure). During all these bolt movements, all of the ball bearings are in action, eliminating any friction that causes seizure. According to an embodiment of the invention, Figure 4 shows a mode of cooperation of the bolt in the strike. The bolt 2 has its tapered end like a double bevel chisel 8 and 9. It will be introduced into a keeper 24 at the orifice of which are 2 small ball bearings 25 and 26 sufficiently spaced so that the bolt does not locks between the 2 bearings only at the end of its stroke. By this fact, the bolt which begins its projecting movement does not need to be rigorously in front of the keeper. Indeed, one of the bevels comes to roll on one of the corresponding bearings and corrects the position of the door, obviating a possible insufficiency of the door reminder device called "groom". The oblique bolt and the keeper with roulette exist in the prior art: Swiss patent N ° 206.I43. The present invention is differentiated by the ball bearing on the one hand and the complete set of electric lock on the other.

According to another embodiment of the invention, FIG. 5 shows another mode of latch-strike cooperation. The bolt is bevelled and notched and has a ball bearing 31 at its end, locked on its internal wheel on the bolt, the external wheel free to rotate, cooperating with a keeper made of a set of metal parts fixed by a bracket to the door. This mechanical assembly consists of a sort of double-sloping groove that flares at the inlet orifice and tightens in depth. Each groove wall is a folded or arched plate 24 with a surface slope 24 a and a deep slope 24 b longer. Each arched or folded piece 24, at the end of 24 b, is linked to a rectangular piece 34 by a hinge pin 33, the 2 pieces 34 joined by a screw 36 with double reverse thread, allowing the distance and the bringing together of the parts 34, therefore of the lower ends of the slopes 24 b. The 2 pieces 34 once adjusted to their correct spacing are locked on the bracket 37. The 2 cambered pieces 24 can deviate from one another rotating around the 2 axes 33. This spacing can be adjusted by another screw 35 with double reverse thread, allowing the cambered pieces 24 to be moved away and closer. By acting on the screws 35 and 36, it is possible to bring the 2 planes 24 b parallel to the axis of the bolt and separated from the value of the diameter of the ball bearing. At this time, the plans 24. a make a small flare, facilitating the introduction of the bolt into the strike; the planes 24 b, parallel to each other, provide a strike plate, the walls of which are perpendicular to any driving force. In this condition, the electromagnet 20 being supplied, the bolt is out, the lock is non-fungible, and can then be used as a lock for airlocks of banks or entry of buildings.

Changing this setting, the screw 36 bringing the 2 parts 34 together, the screw 35 tilting the 2 planes 24 b, these deviate and from the parallel position, take an oblique position which can go up to a value such that l pressing on the door transmits a force on the ball bearing 31, the vertical component of which can be large, proportional to the skew of 24 b, and thus makes the door very easy to push in. There is thus a push-in lock, with adjustable push-in force, among others by the adjustable strike, usable for emergency exits of public places. The association of the various ball bearings of the mechanical transmission mode, of the adjustable double slope strike system, differentiates the present invention from the prior art (French patent N ° 2.I66.533 and American patent N ° 3.837.I92 ).

According to a further embodiment of the invention, in FIGS. 2 and 3, a proximity detector 23 is fixed on the fixed plate 3 opposite the end of travel of the movable plate. Coupled with a relay, it has multiple uses: end-of-travel indicator, activation of an economy resistor in series with the electromagnet. According to a variant of use, the bolt can remain projecting out of the lock after the electromagnet 20 has been de-energized, thanks to a sort of key or stud 27 (FIG. I and 2) which can block the movable plate close of the end of its race. This stud is activated by a second electromagnet 29 of the pushing type, making it protrude through a hole in the fixed plate. Figure 6 shows a longitudinal section through the stud 27, non-magnetic metal, brass or dural. This stud is sheathed in its lower half by a magnetic metal tube 28, producing with the coil 29 a solenoid of the pushing type which, energized, attracts the metal tube 28 therefore causes the stud 27 to protrude, compressing the spring 30. The coil 29 is fixed on the fixed plate. The axis or stud 27, when it projects, moved by the electromagnet 29, is spaced from I to 2 mm from the edge of the movable plate when the electromagnet 20 -21 is glued. In this way, when the electromagnet 20 is de-energized while the stud 27 is projecting, the spring 22 pushes the movable plate 4 from I to 2 mm and this is blocked on the stud 27 which itself is blocked by the movable plate. The bolt is then blocked projecting out of the lock. The lock is closed in the absence of current. To open the lock, just a short pulse in the coil 20, the movable plate 4 moves I or 2 mm towards the electromagnet, the pin 27 released is erased brought back by the spring 30, and the movable plate is pushed back by the spring 22. The bolt enters the lock. The lock is open. Instead of an electrical impulse, while the lock is blocked by the stud 27, we supply the coil 20 while maintaining the current permanently: the movable plate moves from I to 2 mm. The nipple 27 disappears. The bolt 2 has hardly moved. We have just made the transition from the lock, from the night locking situation to the push-in anti-panic locking situation. There is interest and sometimes obligation to be able to control the position of the stud 27. For this, the proximity detector 23 or a second proximity detector is placed opposite the end of the stud 27 and detects it in the extended position. This signal is brought back to a control panel. For the night locking mentioned above, a timed power supply can be used: first switching on the electromagnets 20 and 29, then switching off the electromagnet 20 2 or 3 seconds before switching off the electromagnet 29.

In a lock previously described (Australian patent N ° 50I.920), lock which is totally different in its principle of application, not having the particularity of being inserted, and in which an ordinary bolt is mobilized directly by 2 electro -magnets, one acting for the exit, the other for the retraction of the bolt, we describe a stud blocking the bolt. The protrusion of a nipple by an electromagnet is commonplace. In the cited reference, the electromagnet must remain permanently energized to maintain the stud against a shoulder of the bolt. In the present invention, the stud hooks not a shoulder of the bolt, but a complex mechanical transmission and it is the return spring of the bolt which contributes, by means of the movable plate, to block the stud. to retract the nipple, the electromagnet that held it must be de-energized. On the contrary, to unlock the stud in the present invention, it is necessary to feed a coil, that of the bolt, to advance the mechanics of the bolt, before allowing it to reverse. Finally, in the invention described here, the stud has its free end, without vis-à-vis, which makes it possible to place a proximity detector opposite its end to control it. According to a further embodiment, provision should be made for the possibility of a power failure and the possibility of mechanically actuating the lock. ... For this, Figure I shows a key cylinder with a threshing rod, quarter turn. The rod is in the same plane as the movable plate 4. The barrel is fixed on the stationary body of the lock. Performing its I / 4 turn, the threshing rod pushes the movable plate until its complete end of travel. The lock is mechanically locked in this way by a key. Carrying out the I / 4 reverse turn, the rod disappears and leaves the movable plate 4 pushed back by the spring 22: the bolt enters, the lock is open. If the lock was blocked by the pin 27, the threshing rod can unlock it, because it can push the movable plate until the complete end of its stroke. For safety reasons, it is advisable to control the position of the threshing rod, by a micro-contact which sends the information to the control panel.

The device according to the invention is particularly intended for remote-controlled electro-mechanical locking of building doors, bank airlock doors, emergency exits from places open to the public and all doors, in all cases where there must be access control or restriction.

Claims

I. Electro-mechanical lock characterized in that it comprises an electromagnet (20-2I), pulling, when it is connected a movable iron plate (4) and compressing at the same time a spring (22) serving to return the mobile assembly, when the electromagnet is disconnected, the movable plate (4) comprising 2 oblong slots (I4 and I5) to cooperate with 2 ball bearings (I0a and lIa) serving as a guide and fixed on the lock, and comprising a third oblique slot (I7), with 2 slopes both descending therefore in the same direction, to cooperate with a ball bearing (6) coaxial with another underlying ball bearing (5), against the bolt, both fixed on the corresponding face of a bolt (2), to move this bolt during the movements of the movable plate, the bearing distant from the bolt (6) rolling in the oblique slot (I7) at the same time as the Underlying ball bearing closest to the bolt (5) rolls in the vertical slot (13) of a plate f ix (3), fixed to the frame (I) of the lock by 3 spacers (I0, II and I2) which enclose the bolt, one on one side, the other 2 on the other side of the bolt, which spacers have ball bearings to cooperate with the bolt and facilitate its sliding, the bolt having at its end projecting 2 bevels (8 and 9) cooperating with 2 ball bearings (25 and 26) fixed to the inlet port of the keeper (24), the said lock further comprising a 2nd push-type electromagnet (29), the extended movable core of which forms a stud (27) passing through the fixed plate, overflowing it to project onto the return path of the movable plate, the said lock further comprising a barrel with a batting stick key, cooperating with the movable plate, the flapping of the cane mobilizing the movable plate-plunger core assembly until bringing the core into contact with the bottom of the electromagnet pulling. claims

2. Lock according to claim I characterized in that the movable plate (4) comprises 2 longitudinal slots (I4 and I5) cooperating with 2 ball bearings (10a and lia) and an oblique slot (I7) with double obliquity both descending , the main one, the longest (I7a) at about 45 degrees from the longitudinal edge of the movable plate (I8), the other shorter (I7b) at the end of the bolt stroke, at I0 or

15 degrees, slot cooperating with a ball bearing (6) integral with the bolt.

3. Lock according to claim I characterized in that the fixed part guiding the bolt, comprises inter alia a fixed plate (3) with a slot (I3) elongated in the direction of movement of the bolt, cooperating with the ball bearing (5 ) closest to the bolt, plate fixed to the chassis by a spacer (IO) on one side of the bolt and 2 spacers (II and I2) on the other side of the bolt, each spacer comprising I or 2 ball bearings cooperating with the faces of the bolt, to guide it as it travels between the fixed plate and the frame.

4. Lock according to claim I characterized in that the bolt is introduced into a keeper by a tapered end in double bevel (8 and 9), the keeper having an opening eomportant at its entry 2 small opposite ball bearings, to cooperate with the 2 bevels of the bolt.

5. Lock according to claims I and 4. characterized in that another pin-strike cooperation requires a small ball bearing at the protruding end of the bolt, cooperating with a strike comprising a bracket for fixing the strike on the door (37 ), 2 rectangular pieces (34) fixed to the square but can be mobilized, secured by a screw (36) with double reverse thread allowing variation .... / ... claims

.... their reciprocal distance, each part supporting a hinged plate on it, the 2 plates secured by a screw (35) with double reverse thread allowing to vary their reciprocal inclination, the 2 plates having at their end a camber accentuating their spacing to make an entry opening for the flared keeper, all 2 plates thus arched making a cavity serving as a keeper cavity, the walls of which are with adjustable inclination.

6. Lock according to claim 1 characterized in that a 2nd electromagnet (29) of the pushing type is subject to the fixed plate, its core (27) facing a hole in this plate, to pass through this plate and be placed when it is projecting on the return path of the movable plate, and characterized in that, opposite the end of travel of the stud (27) is placed an electronic proximity detector making it possible to control the position of the stud protruding or recessed, detector sending a signal to a control panel.

7. Lock according to claim 1 characterized in that a key barrel with cam batteuseois subject to the fixed assembly of the lock, so that the cam cam (38) in a direction of travel comes to push the movable plate and l '' bring it to the extreme position of its stroke, plunger core at the bottom of the pulling electromagnet and in the other direction of its stroke come to actuate a switch allowing to send a signal to the control panel to control the position of the cam thresher. claims

8. Lock according to claim 1 characterized in that it comprises a bolt on one face of which are fixed two ball bearings (5 and 6), one on the other coaxial, to cooperate, one with a parallel slot to the bolt of the fixed plate, the other with a slot with double obliquity of the movable plate.