EP0953094B1 - Mortise lock - Google Patents

Abstract

The invention concerns a multipoint electric lock, comprising at least two mutually spaced locking devices, a rod assembly directly connecting the locking devices together, integral with a housing, which slides in the housing, guided thereon by means of the locking devices, an electric motor constituting an actuating device, integral with the housing, and a transmission mechanism which ensures the transmission of movement between the actuating device and the rod assembly.

Description

Technical area

The subject of the present invention is a lock built-in type with a housing shaped chute closed by a cover and receiving the entire mechanism for actuating and locking the lock, this mechanism consisting of a device actuation, control linkage, mobile longitudinally in the housing, and at least one bolt or similar locking device, arranged away of the actuation device and likely to make projection of the housing in the closed position of the lock, the linkage ensuring the connection between the assemblies constituted by the actuating device and the locking device.

Prior art

A device of this kind is particularly known for production of multi-point locks actuated by a mechanical device, and is generally designed to apply on the inside of the door.

In such a device, the drive mechanism of the lock consists of a complete set, operating independently of the housing and inserted in this one, the linkage simply providing the link between the actuating members projecting from the drive mechanism and devices locking.

We also know lock mechanisms intended to be built into the door, generally in the amount of the door; this amount is either a coin in wood, or even a rectangular metal profile in the case of a metal door. In this case, these are complete sets: complete lock with integrated latch in a box, or, in the case of multi-point locks, integrated lock in a case and diverter, which are embedded in the door, usually by mortising at the location of the lock and the deflectors, these elements then being connected by a linkage introduced longitudinally in the door jamb.

When an electric lock is used, to obvious security reasons we usually install such a lock comprising a mechanical device opening the lock in the event of a power failure. In this case we are required, due to the system of embedding the lock in a mortise formed in the amount (usually a metal profile in the case an armored door), to embed in the so-called mortise a complete lock comprising, in a single housing built-in, electric lock, mechanical system opening and the bolt or locking device.

Document DE 44 01 971 A discloses a lock comprising a housing in the form of a chute which receives the locking mechanism, the lock comprising an actuating device which is an electric motor and a control linkage, movable longitudinally in the housing. In this prior document, the lock is a multi-point electric lock, comprising at least two locking devices spaced from one another,
the linkage directly connects the locking devices, integral with the housing, and slides in the housing while being guided on the latter by means of said locking devices,
the actuating device is an electric motor, a transmission mechanism ensures the transmission of movement between the actuating device and the linkage, the electric motor constituting the actuating device controls the linkage both in the direction of closing and of the opening, via the transmission, and an auxiliary mechanical actuation device is also provided for controlling the linkage in the opening direction.

In this embodiment the lock consists of several separate sets, namely a shaped housing trunking containing the linkage and the bolts, a actuator assembly comprising the device actuation and transmission, and a mechanical lock acting on the actuation assembly.

Statement of the invention

The present invention applies generally to the built-in electric door locks which have metal studs. It no longer applies particularly locks for such doors which have metal studs as part of the frame either of the sash or of the door frame.

An object of the present invention is to rationalize the production of both locks doors and doors with such locks.

This objective is achieved by providing that, in a lock of the type described in the introductory part of the claim 1, the housing receives in addition to the linkage, the actuator as well as the mechanical device auxiliary actuation, and that the device actuator and the auxiliary mechanical device are separate from each other and arranged in locations separate from the accommodation, along the linkage.

Such a provision, in which the various elements of the lock mechanism are distributed along the linkage and are directly accessible on the whole housing, not only simplifies mounting the lock and any accessories, but also to include it easily and effectively, in the form of mechanisms acting at the level of linkage and distributed along the latter, a series additional elements allowing, in a simple and inexpensive, making reliable devices increasing the number of functions that can be performed by the lock.

Such advantageous embodiments of the lock of the invention are the subject of the claims subsidiary.

In addition, the fact that the housing of the lock constitutes door jamb greatly simplifies integration of the lock on the door during the manufacture of the latter, thereby greatly reducing the cost of mounting the lock on the door.

Brief description of the drawings

• la fig 1 montre un mode de réalisation extrêmement simplifié d'une serrure suivant l'invention,
• la fig 2 est une vue en plan du dispositif d'actionnement, d'une partie de la tringle, et d'un mode de réalisation préféré du dispositif de transmission entre le dispositif d'actionnement et la tringle,
• la fig 3 est une vue schématique de profil du mécanisme de transmission de la fig 2,
• la fig 4 est une vue schématique en plan d'un premier mode de réalisation préféré d'une serrure suivant l'invention,
• la fig 5 est une vue schématique en plan montrant la coopération des divers éléments d'un mode de réalisation préféré d'un dispositif mécanique auxiliaire d'actionnement de la tringlerie suivant l'invention,
• la fig 6 est une vue schématique d'un mode de réalisation préféré d'un mécanisme de verrouillage de la tringlerie suivant l'invention,
• la fig 7 est une vue schématique en plan d'un mode de réalisation particulièrement préféré d'une serrure suivant l'invention,
• la fig 8 est une vue schématique en perspective d'une partie de la tringlerie et des différents moyens de commande qui y sont associés,
• les figs. 9a, 9b, 9c représentent schématiquement diverses étapes de l'ouverture de la porte illustrée à la fig 7, sous l'effet d'une commande électrique de la serrure,
• les figs 10, 10b, 10c représentent les étapes correspondantes d'ouverture de la porte illustrée à la fig 7, lorsqu'il est fait usage du dispositif mécanique auxiliaire d'actionnement, et
• les figs 11a, 11b et 11c représentent les étapes correspondantes d'ouverture de la porte illustrée à la fig 7, lorsqu'il est en outre fait usage d'une serrure quart de tour.

The invention will be better understood by referring to the description at the same time as to the appended drawing which schematically represents, only by way of example, various embodiments of the invention, and in which:

• FIG. 1 shows an extremely simplified embodiment of a lock according to the invention,
• FIG. 2 is a plan view of the actuating device, of a part of the rod, and of a preferred embodiment of the transmission device between the actuating device and the rod,
• FIG. 3 is a schematic profile view of the transmission mechanism of FIG. 2,
• FIG. 4 is a schematic plan view of a first preferred embodiment of a lock according to the invention,
• FIG. 5 is a schematic plan view showing the cooperation of the various elements of a preferred embodiment of an auxiliary mechanical device for actuating the linkage according to the invention,
• FIG. 6 is a schematic view of a preferred embodiment of a locking mechanism for the linkage according to the invention,
• FIG. 7 is a schematic plan view of a particularly preferred embodiment of a lock according to the invention,
• FIG. 8 is a schematic perspective view of part of the linkage and of the various control means associated therewith,
• figs. 9a, 9b, 9c schematically represent various stages of the opening of the door illustrated in FIG. 7, under the effect of an electrical control of the lock,
• FIGS. 10, 10b, 10c represent the corresponding steps for opening the door illustrated in FIG. 7, when use is made of the auxiliary mechanical actuation device, and
• FIGS. 11a, 11b and 11c represent the corresponding stages of opening the door illustrated in FIG. 7, when use is also made of a quarter-turn lock.

In the various embodiments described herein patent, the same reference numbers denote the same elements.

Referring to the simplified embodiment of the fig 1, a lock according to the invention comprises a housing 1 in the form of a chute, of which two are integral locking devices 2, 2 ′ separated from each other, in this case deviators controlling the exit of bolts 3. A rod 4 extends between the deflectors 2, 2 ' and slides in the housing 1 on which it is guided through the so-called deviators 2, 2 '. A motor electric 5, integral with the housing 1 on which it is mounted, actuates the linkage 4 via a transmission mechanism 6 constituted, in the example represented, by a rack and pinion system. A cover, not shown, which is not part of the invention is intended to close the chute by any known means.

The advantage of such a provision is on the one hand constitute the linkage as a receiving element of the movement initiated by the actuating device, and so allow to multiply along the linkage the number different actuation devices while decoupling more easily the linkage of these various devices actuation, and secondly to rationalize and thus simplify the manufacture and assembly of the various actuators, which should not be integrated with each other. This provision allows also, as we can see below, to increase notably and in a simple and reliable way the number of functions that can be performed by the lock.

A first preferred embodiment of the invention is illustrated in figure 4.

According to this embodiment, the lock of the invention comprises, as in the mode of embodiment of Figure 1, a housing 1 in the form of chute attached to two deflectors 2, 2 'controlling the movement of bolts 3 between a projecting position such as shown in Figure 4, corresponding to the closure of the lock, and a recessed position such that shown in Figure 1, corresponding to the opening of the lock. A linkage 4 slides in the housing 1 in based on the deflectors 2, 2 'by which it is guided in said housing 1.

An electric motor 5 drives the linkage by via a 6 'transmission.

In addition, an auxiliary mechanical device actuator 7 is provided to act at a location of the linkage separate from the 6 'transmission, with a view to allow the opening of the lock by the action of a key in case of power failure.

According to the preferred embodiment of the invention illustrated in fig 4, the auxiliary mechanical device actuator 7 also includes a device for locking the linkage 8 in the closed position of the lock. In the absence of such a locking device in effect, any action exerted on the linkage 4 in the direction of opening the lock would cause actually the opening of the latter. Furthermore, this auxiliary mechanical actuation device 7 is provided to order linkage 4 only in the direction of the opening.

The various elements mentioned above, and in particular the 6 'transmission, the auxiliary mechanical device actuator 7 and the locking device 8 of the linkage, will be described in more detail below in connection respectively with Figures 2 and 3, 5, and 6.

Figures 2 and 3 show an embodiment preferred transmission 6 'between electric motor 5 and linkage 4, particularly suitable for cooperation with an auxiliary mechanical device actuation 7 of the linkage 4. Indeed, so general use is made of electric motors 5 with a high rotational speed, which therefore require the use of a speed reducer 9. In such cases, driving the engine from the output shaft 9 ′ of the speed reducer 9, training which, for lack of an appropriate device, produced when the linkage is actuated to the opening position by the auxiliary mechanical device actuation, requires a significant torque, and therefore a significant effort on the key activating the device auxiliary mechanical actuation.

In this perspective, the 6 'transmission provides a disengaging of the motor in the event of a power failure. In the embodiment illustrated in the patent, this clutch is performed as follows. The 6 'transmission is consisting on the one hand of a motor pinion 10 arranged at the end of the output shaft 9 'of the speed reducer 9, and on the other hand a toothed belt 11 winding on two pulleys 12, 12 'which pivot on an integral axis of the linkage 4, the cooperation of the pinion 10 with the toothed belt 11 being provided by rollers tension 10 ', 10 ". Pulley 12' is fixed to a pinion 13 coming into engagement with a pinion 14 controlled by a electromagnetic clutch 15 fixedly mounted on the linkage 4.

When the electromagnetic clutch 15 is energized in current, and that therefore the electrical control of the lock can operate normally, pinion 14 is immobilized in rotation, thereby blocking the pulley 12 ', and therefore the winding of the toothed belt 11 on the pulleys 12, 12 '. The toothed belt 11 then remains stationary with respect to the linkage 4. In this case, the rotation of the motor 5 causes the movement of the belt notched 11 relative to the pinion 10, without winding the toothed belt 11 on the pulleys 12, 12 ', and therefore the displacement of the linkage 4 relative to the pinion 10.

When the power supply to the lock, and therefore the electromagnetic clutch is interrupted, the pinion 14 can pivot freely. Therefore a displacement the linkage 4 relative to the pinion 10 drives the winding of the toothed belt 11 on the pulleys 12, 12 'without causing the pinion 10 to pivot. The actuation of the linkage by the mechanical device auxiliary actuation is thereby facilitated.

Fig. 5 schematically shows the operation of the essential parts of an auxiliary mechanical device actuation of the linkage as shown in 7 to fig. 4. This device essentially comprises, as movable element, a control arm 16 whose face lower 16 'is intended to cooperate with a projection 17 formed on the linkage 4 to act on said linkage only in the direction of opening the lock.

The control arm 16 moves on a support 18, secured to housing 1, through buttonholes 19, 19 ′ formed in said control arm, buttonholes which cooperate with studs 20, 20 ' integral with the support 18. The support 18 is arranged in the housing 1 so that this movement of the arm on the support takes place, at least substantially, according to a movement parallel to the direction of movement of the linkage.

The control arm 16 comprises two series of notches, respectively a series of locking notches 21 and a series of actuation notches 22.

The locking notches 21 cooperate successively with a lug 23 carried by a lever 24 oscillating on the support and constantly pressed in the direction of arrow 25 by a spring, not shown, tending to bring the lug 23 into cooperation with a blocking notch 21. In the example shown, the lever 24 oscillates around the stud 20.

The actuation notches 22 cooperate with the bolt 26 of a lock cylinder 27, within the scope of which bolt 26 also penetrates lever 24. The rotation of the bolt therefore causes on the one hand the pivoting of the lever 24 and its lug 23 to a position away from the notches of blocking 21, and on the other hand the displacement, on a distance of a notch from the actuating arm 16 by action of the bolt 26 on the wall of the actuation notch 22 corresponding. Continued rotation of the bolt until its release from the actuation notch 22 allows the return lever 24 in the direction of arrow 25, for a engagement of lug 23 in the following blocking notch 21. The total stroke of the actuating arm 16, and therefore the number of turns of the bolt, is thus provided to ensure, by an action on the projection 17, a displacement of the linkage 4 corresponding to a total opening of the door.

According to a preferred embodiment of this device auxiliary mechanical actuation 7, the control arm 16 consists of two plates of identical profile, parallel, spaced apart, and lever 24 carrying the locking pin 23 is arranged between the plates constituting the control arm 16.

According to the embodiment of the invention illustrated in fig. 4, the electric control of the door, as well as the auxiliary mechanical actuation device, control a locking device 8 of the linkage. As shown in fig. 6, this device locking consists of a stop 28 formed on the linkage and a latch 29 oscillating on the housing 1. More particularly, in the example shown, the latch 29 oscillates on the support 18 integral with the housing 1. The latch 29 is constantly pressed in the direction of arrow 30 by a spring, not shown, towards a position engagement with the stopper 28. This engagement, as illustrated in fig 6, is ensured in the closed position of the lock. Thus, any movement of the rod 4 allowing a retraction of the bolts 3 is prevented as long as the unlocking of the rod 4 is not ensured.

The electrical control of the latch 29 is provided by a electromagnet 31, the plunger of which instantly brings the latch 29 away from the stop 28, prior to actuation of the electric motor 5.

In the event of a power failure, and control of the opening device by mechanical device auxiliary actuation, the latch control 29 is ensured by the cooperation of a ramp 32, formed in the latch 29, and a finger 33 worn at the upper part 34 of the actuating arm 16. Lowering the arm actuation, in the first part of its stroke, causes the finger 33 to descend along the ramp 32, and thus the pivoting of the latch 29 to its position 29 ' illustrated in dotted lines. It is only after this pivoting that the underside 16 'of the actuating arm 16 comes in contact with the projection 17 on the linkage 4. The continuation of the stroke of the actuating arm 16 ensures the lowering of the linkage 4 and the opening of the lock, the finger 33 continuing its downhill course along the ramp 32.

According to this embodiment, once the opening of the lock produced by the mechanical device actuation auxiliary 7, this is brought back, by a suitable action on the key actuating the cylinder 27, high closing position as shown in lines full in fig. 4. When the power returns, this allows the electric motor 5 to actuate the linkage 4 until closed position of the lock, the latch 29 being then pushed back by the stop 28 against the action of the spring (arrow 30), until it rebounds under said stop 28 and move to the locked position. This movement of latch 29 is also obtained on each closure by the electric control of the door, following a opening by the same electric control.

A particularly preferred embodiment of the invention is finally illustrated diagrammatically in FIG. 7.

This embodiment comprises, in addition to the elements already described in connection with fig. 4, a quarter lock lathe 35 whose lance 36 cooperates with a keeper electric 37. This electric strike 37 is, of course, normally controlled by the opening command door.

The mechanical actuation device 38 of the lock quarter turn 35 is secured to a lever 39 coming in cooperation with linkage 4 via a buttonhole 40. Furthermore, an L-shaped element 41 slides on the linkage 4 by the cooperation of studs 42, 42 ', integral with the linkage, with buttonholes 43, 43 ' formed in the large arm 44 of said L-shaped element 41. This L-shaped element 41 constitutes, by its small arm 45, the projection on the linkage intended to cooperate with the arm 16 of the auxiliary mechanical device actuation 7.

The element in L 41 is placed on the linkage, considered in the closed position, so that, when it rests by the upper end of its buttonholes 43, 43 'on the studs 42, 42' of the linkage, the end of its large arm 44 comes to the contact of lever 39 in rest position, corresponding to the rest position of the actuation mechanism 38 of the quarter-turn lock 35. The length of the buttonholes 43, 43 'corresponds approximately to the length of the stroke of the linkage (4) between the closed position and the position open the lock.

Furthermore, in this same closed position of the lock, the lever 39 is arranged in the buttonhole 40 so that the length of buttonhole 40 arranged above of said lever 39 also corresponds substantially to the length of linkage travel between position closed in the open position of the lock. The buttonhole 40 is further extended by an additional length, of which the role will be explained below, under lever 39.

The lever 39 has an arm 46 suitably connected - in the example schematically represented in fig 7, by via a cable 47 and pulleys 48, 48 '- at latch 29 of the locking device 8 of the linkage 4.

The various operating modes of this lock, from the closed position to the position are schematically illustrated respectively in figs. 9 a, b, c; 10 a, b, c and 11 a, b, c, and are commented below.

Generally in these various figures are only listed, schematically, the elements involved in the operating mode considered.

In each of these figures are represented respectively a housing 1, containing the lock and amount of the door leaf, and the amount correspondent 49 of the frame. In the cooperation of opening it with the frame, only tossing it 36 of the lock quarter turn in the sash, and the electric strike 37 in the frame, are represented. The position of the bolts, not shown in these figures, in their cavity corresponding to the frame, is of course a function, as described above, from the position of the linkage 4.

Each of Figures 9a, 10a, 11a shows the lock in the closed position, i.e. the linkage 4 in high position, the bolts protruding into their cavity of the frame and the electric strike 37 being blocked in rotation (which is schematically represented in the drawing by the action of an electromagnet 50).

Figs 9a, 9b, 9c illustrate the operation of electric control elements of the lock, i.e. its normal operation.

In FIG. 9a, the linkage 4 is in the high position, its locking is ensured by engaging the latch 29 under the stop 28, the keeper 37 is blocked and cooperates with throwing it 36, the bolts are engaged in their cavities respective of the frame 49 and the clutch 15 is supplied, blocking the pinion 14 and, through the pinion 13, blocking the pulley 12 'and therefore the toothed belt 11.

In fig 9b, the door opening command comes to be given. The electromagnet 31 is energized and attracts towards him the latch 29, ensuring the unlocking of the linkage 4. Motor 5 is supplied while the clutch 15 also remains supplied. The rotation of the pinion 10 at the output of the motor shaft, combined with blocking the toothed belt 11, causes displacement from linkage 4 to the open position of the lock, and the progressive withdrawal of the bolts from their cavities. According to a preferred embodiment of the invention, the control of the electric strike 37 is timed to keep strike plate 37 in position closing as long as the total withdrawal of the bolts their cavities is not realized. This provision allows to prevent that, by an untimely push exerted by user on the door when opening, bolts are stuck in their cavities during their withdrawal movement, causing an overload of the motor 5, or even possibly a total blockage of the movement opening. Keeping the keeper closed electric 37, cooperating with the launch 36, allows free the bolts of any effort resulting from such untimely thrust, and therefore ensures in all cases a correct operation of the lock up to position opening.

Once the opening position of the lock is reached (fig 9c), the toothed belt 11, locked on the pulleys 12, 12 ', moved under the action of the motor 5 of a distance d, causing the linkage 4 in its movement downhill. Simultaneously the electric strike 37 is released, its pivoting allowing the release of the thrower 36 and therefore the opening of the door. Note that during of this downward movement of the linkage 4 none action was neither exercised on the element in L 41, nor on the lever 39 actuating the quarter-turn lock 35. This lowering movement of linkage 4 only resulted in a displacement of the studs 42, 42 'in the respective buttonholes 43, 43 'and lever 39 by with buttonhole 40.

When returning the lock to the closed position (not shown), the door is first closed, and the throwing 36 bounces past the strike 37 again blocked. The linkage then rises to the position of closing by the action of motor 5 on the toothed belt Always blocked. This movement continues until that the stop 28 passes beyond the latch 29, which rebounds under the stop 28 under the action of its spring (arrow 30 to fig 6), and the linkage 4 comes to a standstill in the closing, locked.

The door can be opened in the event of a power failure using the auxiliary mechanical actuation device as illustrated in figs 10 a, b and c.

In the closed position of the door (fig. 10 a), the linkage 4 is in the high closing position of the lock, the actuating arm 16 of the mechanical device auxiliary actuator (see figs 5 and 6) is also in the high position, the latch 29 is engaged under the stop 28 of the linkage locking device, and the finger 33 at the upper part of the actuating arm 16 cooperates with the upper part of the ramp 32 formed in the latch 29.

The lowering of a first notch of the actuating arm 16 by an action of the key in the lock 27 causing the rotation of a turn of the bolt 26 (see fig 5) causes the descent of the actuating arm 16 in its support from a distance d ₁ , and concomitantly the descent of the finger 33 along the ramp 32, and therefore the pivoting of the latch 29 away from the stop 28. The linkage 4 is thus unlocked, while the actuating arm 16 is brought into contact with the small arm 45 of the L-shaped element 41. This is illustrated in FIG. 10 b.

Additional lowering of the actuating arm 16 pushes on the small arm 45 of the element in L 41. This thrust is transmitted on the one hand to the linkage 4 by the end of the buttonholes 43, 43 ' pushing on the studs 42, 42 'of the linkage, and on the other hand to the actuating lever 39 of the lock quarter turn by the end of the arm 44. This movement lowering the actuating arm 16 is continued until the linkage descends to open position, and that simultaneously the pivoting of the lever caused the lance to clear (fig 10 c). The door can then open.

Note, as said above in connection with the description of figs 2 and 3, that in the absence of current the clutch 15 (not shown in figs 10) is released, and that therefore the linkage 4 can move without having to drive the engine, which reduces the effort to be exerted on the actuating arm 16.

Once the door is open, the actuating arm 16 is brought up, which on the one hand frees up rotation the latch 29, and on the other hand releases the arm 45 from the action of the actuating arm 16, and allows the return to normal position of the lever 39, and therefore the return of the lance in the closed position. This step is not shown to the drawing.

Note that throughout the various stages of fig 10, the striker 37 remained locked. Therefore, when the actuating arm 16 has been completely raised further to a suitable action on the mechanical device auxiliary actuator 7, the door can be closed. It will be kept closed, even in the absence of current, by rebounding the thrower 36 beyond the strike 37. When the power returns, suitable detectors, not shown, will detect the state of the linkage in open position and motor 5 will be activated to bring it to the closed position.

Finally, as shown in Figs 11a, b and c, it can also be made use of the quarter turn lock (35 in fig 7) to cause the door to open.

In the closed position of the lock (fig 11 a), the linkage 4 is in the high closed position, the latch 29 cooperates with the stop 28 to ensure the locking of the linkage, and the lever 39 for actuating the lock quarter turn is in the rest position, throwing it 36 protruding from the lock to cooperate with the keeper electric 37 blocked in rotation.

A first action on the actuation device 38 of the quarter-turn lock causes the pivoting of the lever 39 and its arm 46 to the position illustrated in fig 11 b. In this position, the lever 39 comes into contact with the bottom of the buttonhole 40, while the lever 46 exerts traction on the cable 47, causing release of latch 29 out of position for locking the linkage 4, which can thus be move to the open position. This first pivoting lever 39 also causes a first withdrawal of the thrower 36.

Continued action on the device actuation 38 in the same direction causes rotation additional lever 39. The end thereof in contact with the linkage 4, at the bottom of the buttonhole 40, causes said linkage 4 to open position, while the total withdrawal of the thrower. The door can thus open very quickly.

The actuating device 38 is for example activated by a "panic bar", under the effect of a thrust exerted on said bar. Preferably this bar is automatically returned to the rest position when the thrust stops, allowing the return of the throwing 36 projecting from the lock. The door can then close while being kept closed at least by the cooperation of the thrower and the keeper. If, within circumstances that led to the use of the panic, the current has been maintained, nothing prevents this the door is fully locked again, under the action of the electrical controls, once the return of the door in the closed position noted by suitable detectors. If necessary, this allows once the premises have been evacuated, avoid closing them to new, possibly automatically by a appropriate device, and keep them closed so safe against malicious intrusion.

Various means exist to regulate the use of a like "panic bar". This provides a means reliable and extremely fast to provoke in case of need the opening of a door closed by a lock electric multipoint.

All of the devices described above are made from simple elements, generally able be obtained by cutting from sheet metal and bending, which makes their manufacture inexpensive. Their design allows furthermore their realization in modular form, for allow flexible adaptation of manufacturing and assembly with different lock dimensions.

According to a particularly preferred embodiment of the invention, the housing 1 of the lock constitutes also metal door jamb, allowing to further rationalize the manufacturing of the door and mounting the lock in said door, and therefore reduce production costs accordingly.

It goes without saying of course that the housing 1 can constitute an amount, both of the opening and of the frame door.

Claims (16)

1. Electrical mortise lock having a chute-type housing (1), closed by a cover and accommodating said entire locking mechanism, said lock consisting of

   an actuating device (5),

   a control rod assembly (4), movable longitudinally in said housing,

   at least two mutually spaced locking devices (2, 2'), capable of projecting from said housing when said lock is in a closed position,

   said rod assembly (4) directly connecting together said locking devices (2, 2'), integral with said housing (1) and sliding in said housing, guided thereon by means of said locking devices (2, 2'),

   said actuating device being formed by an electric motor (5),

   a transmission mechanism (6, 6') for transmitting the movement between said actuating device (5) and said rod assembly (4),

   said electric motor (5) forming said actuating device controlling said rod assembly (4) both in an opening and closing direction through said transmission mechanism (6, 6'),

   an auxiliary mechanical actuating device (7) being also provided for controlling said rod assembly (4) in an opening direction,

   characterized in that

   said housing (1) accommodates, in addition to said rod assembly (4), said actuating device (5) as well as said auxiliary mechanical actuating device (7), and in that

   said actuating device (5) and said auxiliary mechanical actuating device (7) are separated from each other, and are disposed in stapced-apart locations in said housing (1), over the length of said rod assembly (4).
2. A mortise lock according to claim 1, characterized in that

   said motor (5) is affixed to said housing (1)

   driving (10) and driven (11, 12, 12') members of the transmission mechanism (6') are directly affixed, respectively, to said output shaft (9') of said motor and to said rod assembly (4),

   said auxiliary mechanical actuating device (7) directly controls said rod assembly (4) without interfering with movement of said rod assembly (4) by said electric motor (5).
3. A lock according to claim 2, characterized in that the transmission member (6') connecting said electric motor (5) and said rod assembly (4) can be disengaged at least in the opening direction, and in that said auxiliary mechanical actuating device (7) controls said rod assembly (4) only in the opening direction, said movement of said rod assembly (4) being completely released from the action of said auxiliary mechanical actuating device (7) when the latter is in a rest position, corresponding to said closed position.
4. A lock according to claim 3, characterized in that said transmission member (6') connecting said electric motor (5) and said rod assembly (4) consists, on the one hand, of a drive pin (10) mounted at the outlet of a speed reducer (9) assembled with said motor (5), and, on the other hand, with a notched belt (11) kept engaged with said drive pin (10) and held between two return pulleys (12, 12') rotatably mounted on said rod assembly (4), an electromagnetic coupling (15) acting on at least one (12') of the return pulleys to block it in rotation, wherein said coupling can be disengaged in case of a power failure, to release the pulley (12') and thus make it possible to wind said notched belt (11) on said pulley (12'), at least in the direction corresponding to the winding direction required to enable said rod assembly (4) to be opened.
5. A lock according to claim 3 or 4, characterized in that said auxiliary mechanical actuating device (7), actuated by a key, is a mechanical lock actuating a control arm (16) driven by a movement parallel to a direction of displacement of said rod assembly (4), and in that said rod assembly (4) has a projection (17) situated in said path of said arm (16), considered in the direction of displacement of said rod assembly (4) toward the open position, to interact with said arm (16) when said arm is moved in said direction of opening of said rod assembly (4).
6. A lock according to any one of the preceding claims 2 to 4, characterized in that said rod assembly (4) further comprises a locking device (8) controlled both electrically and by said auxiliary mechanical actuating device (7).
7. A lock according to claim 6, characterized in that said locking device (8) consists of a latch (29) pivoting on said housing (1), constantly urged by a spring to a position of engagement with a stop (28) provided on said rod assembly (4), and actuated apart from this engaged position, simultaneously by the piston of an electromagnet (31) controlled by the electric device and by a pawl (33), assembled with said control arm (16) of said auxiliary mechanically actuating device (7), interacting with a ramp (32) formed in said latch (29).
8. A lock according to claim 6 or 7, characterized in that a quarter-turn lock (35), comprising a tongue (36) provided to interact with an electric catch (37), normally controlled concurrently with said electric lock, is integrated in the mechanism of the mortise lock, and in that the movement of said tongue (36) of said quarter-turn lock (35) at a distance from said catch (37) is controlled, via said actuating member (38) of said quarter-turn lock (35), by said auxiliary mechanical actuating device (7).
9. A lock according to claim 8, characterized in that said actuating member (38) of said quarter-turn lock (35) also controls said rod assembly (4), only in the direction of opening, as well as the rocking of said locking latch (29) of said rod assembly (4).
10. A lock according to claim 9, characterized in that the projection (17) on said rod assembly, subjected to the action of said control arm (16) of said auxiliary mechanical actuating device (7), consists of a small arm (45) situated at an upper part of a reversed L-shaped member (41); the long arm (44) of which lies parallel to said rod assembly (4) and rests, with its lower end, on an actuating lever (39) of said quarter-turn lock (35), in that said long arm (44) of said L-shaped member (41) is connected to said rod assembly via slots (43, 43'), the length of which corresponds, at least approximately, to an opening path of said rod assembly (4), and pins (42, 42'), and in that the end of said actuating lever (39) of said quarter-turn lock (35) engages in a slot (40) of said rod assembly, the length of said slot (40) being such as to provide said lever (39), in said slot, with a course corresponding to the opening course of said rod assembly (4) augmented by a preliminary unlocking course of said latch (29), and in that said actuating device (38) of said quarter-turn lock (35) is connected to said latch (29) of said locking device (8) of said rod assembly (4) in such a way that start of the course of said actuating lever (39) of said quarter-turn lock (35), in the corresponding slot (40) of said rod assembly (4), results in the withdrawal of said locking latch (29) in an unlocked position.
11. A lock according to any of claims 1 to 10, characterized in that said housing (1) of said lock forms simultaneously a single casing accommodating all of said locking devices (2, 2'), said rod assembly (4), said actuating device (5, 7, 35) and said transmission (6, 6') between said actuating device (5) and said rod assembly (4), and door stile.
12. A lock according to claim 11, characterized in that said lock housing forms a stile of a casement of an metal door.
13. A lock according to claim 11, characterized in that said lock housing forms said stile of said casing of a metal door.
14. A lock according to claim 5, characterized in that said auxiliary mechanical actuating device (7) consists of a support (18), affixed to said housing (1), of an actuating cylinder (27) for said lock, carried by said support (18), and of said control arm (16), sliding on said support (18) via said slots (19, 19') in which guides (20, 20') carried by said support (18) engage, said control arm (16) comprising two series of notches, namely a first series of notches, called actuating notches (22) provided for interacting with a bolt (26) of said actuating cylinder (27) for moving said control arm (16), and a second series of notches, called blocking notches (21), provided for interacting with a blocking pin (23) resiliently and permanently urged toward a position in engagement with said blocking notches, said blocking pin (23) being carried by a lever (24) pivotally mounted on said support (18) and controlled so as to pivot by the bolt (26) of said cylinder (27) to move said blocking pin (23) away from said notch (21) in which it is engaged, when said bolt (26) of said cylinder (27) engages with said corresponding actuating notch (22), so as to actuate said arm (16), this action of said bolt (26) on said pivoting lever (24) being interrupted as soon as said control arm (16) has started movement, so that said pin (23) is again resiliently urged toward an engaged position and can thus fall into the next blocking notch (21), the position of which corresponds to the end of the travel cycle of said control arm (16) resulting from the action of said bolt (26) on said corresponding actuating notch (22).
15. A lock according to claim 14, characterized in that said control arm (16) consists of two parallel plates having an identical profiled section and assembled so as to be mutually spaced, and in that said lever (24) carrying said blocking pin (23) is pivotally mounted on one of the guides (20) engaging in the guiding slots (19) for the control arm (24) and lies between said two plates forming said control arm.
16. A lock according to claim 8, characterized in that said electric catch (37) is opened via a timer in order to allow the release of said tongue (36) only after said locking bolts (3) have been completely withdrawn from their respective housings.

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