EP0300840B1 - Thief- and tamper-proof device to prevent operation of a door-lock and lock used therewith - Google Patents

Description

The subject of the present invention is a set of door locks and a device for locking this lock, in particular for the door of a motor vehicle, as well as the lock forming part of this set.

More generally, the invention is applicable to any lock or closure of a sash of the type below, the term "door" being used below as a synonym for sash for the convenience of the description.

The lock covered by the invention is of the type in accordance with the preamble of claim 1. Such a lock is described in US-A 3,279,227. In this lock, the driver directly puts all the locks in the non-activatable position, which has the effect of not transmitting any effort - control or break-in - to the lock, and this by disengaging an electromechanical mechanism.

In known locks, there is more and more often a centralized electromechanical control from a key lock, equipped with electrical contacts making it possible to lock or unlock all the doors from the outside, in particular the outside. of a vehicle.

One can add to this key lock (or even replace it) a coded remote control, infrared or radio waves fulfilling the same function. In both cases, access to the vehicle is validated by coincidence of a code (key or remote control).

These known locks are also equipped with a switch located inside the vehicle, which makes it possible to control the locking of the exterior controls of the vehicle to prevent assault on the occupants. In general, the rear doors of motor vehicles also have a so-called "child safety" device, which also makes the interior controls for these doors inoperative.

It should be noted that in known locks, the unlocking of at least one door of the vehicle from the outside must be able to be easily obtained in order to enable the occupants to be helped in the event of an accident, and this after breaking a window and unlocking actuation. This imperative also makes it easier to rape the conviction system.

We have therefore imagined improved devices in which the anti-aggression locking is carried out as above by locking the exterior controls only, but where the anti-theft locking of the vehicle renders inoperative either the interior unlocking control or the controls opening times, both.

It is understood that in these improved devices there is a risk of major failure in the event of a failure of the supply battery, or of the electronic control device of the electromechanical control system. This risk must be taken into account all the more since in these devices, special care is given to the locks themselves, to prevent their picking.

Various palliatives have therefore been proposed, such as for example a mechanical emergency lock on one of the doors, a backup battery, a manual linkage for controlling the faulty electromechanical mechanism (US-A 3,279,227). But besides the fact that these palliatives represent an additional cost of equipment, none of them has really given satisfaction.

The object of the invention is therefore to produce a set of locks and locking devices providing a solution to this problem, in the event of a failure of the supply battery.

According to the invention, this objective is achieved by the characteristics of the characterizing part of claim 1.

It is understood that in the absence of current in the electromechanism, the lock is predisposed for opening, either from the outside, or from the inside in the case of a vehicle door equipped with two control systems. manual opening.

If, via the central control device, the switch associated with the exterior opening control system is activated (anti-aggression switch) by switching on, and if the exterior opening command is requested, this request results in the automatic closing of the switch and consequently) 'aiimentatic3 of the electromechanism, which automatically disengages the lever relative to the pawl, thus rendering ineffective the attempt to operate said pawl. The attempt to assault the occupant of the vehicle by opening the doors is therefore foiled, the lock remaining locked.

In a second possible mode of use of the assembly covered by the invention, the second switch, associated with the interior opening control, operates in the same way when it is activated by manual powering of a switch anti-theft of the central control device.

According to one embodiment, the assembly targeted by the invention comprises two systems for manual control of the lever, exterior and interior with respect to the door, each provided with a slide in which an elongated lumen is formed through which one end of the ratchet control lever, and each end of the slides cooperates with a respective switch for external control and internal control, arranged so that in the rest position of the slides the switches are open and that no current flows thereby the electromechanism which then keeps the control lever coupled in rotation with the pawl, and that the actuation of one of the sliders causes the closing of the corresponding switch and consequently, if this switch is activated, the automatic disengagement by the electromechanism of the control lever relative to the pawl , the lock can no longer be opened.

According to another particular feature of the invention, the electrical circuit of the locking device comprises, connected to a direct current source: a first anti-theft reversing switch capable of being closed by a control means such as a manual key coded or a remote control, an anti-theft locking relay, a second anti-aggression switch and an anti-aggression relay, the external control switch, the electromechanism, all these elements being connected in series and the electromechanism being connected on the one hand to the external control switch and on the other hand with the anti-aggression relay, which can be supplied with current via the anti-voi relay when a coil of the latter is not powered and the anti-aggression switch is activated.

When the vehicle user chooses the anti-aggression lock, actuation of the anti-aggression switch causes the external opening control systems of the front and rear doors to be locked. If the user chooses the anti-theft lock, switching on the anti-theft lock switch causes the interior and exterior opening control systems, both the front and rear doors, to be locked.

The locking device and the corresponding lock provided by the invention allow the opening of the vehicle doors in the event of a total breakdown of the supply battery. Indeed in this case the electromechanism is not powered, can not disengage the pawl control lever, and the lock thus remains predisposed to the opening. However, the probability of an attempt to steal the vehicle in such a case is extremely low, as there is no indication that the said system is in a state of total failure.

• - la Figure 1 est une vue en élévation simplifiée d'une première forme de réalisation de la serrure selon l'invention et montrant partiellement ses systèmes de commande d'ouverture extérieure et intérieure, la serrure étant verrouillée et condamnée ;
• - la Figure 2 est une vue en coupe transversale suivant 2-2 de la Figure 1 ;
• - la Figure 3 est une vue en élévation simplifiée d'une seconde forme de réalisation de la serrure selon l'invention, représentée en position verrouillée et condamnée ;
• - la Figure 4 est une vue en élévation latérale partielle et à échelle agrandie de la serrure de la Figure 3;
• - la Figure 5 est une vue en élévation partielle en bout suivant la flèche K de la Figure 4 ;
• - la Figure 6 illustre un mode de réalisation d'un circuit électrique de condamnation anti-vol et anti-agression destiné à coopérer avec une serrure selon l'une des réalisations précédentes ;
• - la Figure 7 est un schéma électrique d'un dispositif de condamnation complétant celui de la Figure 6 pour la condamnation anti-agression et anti-vol d'une porte arrière de véhicule.

Other particularities and advantages of the invention will appear during the description which follows, given with reference to the appended drawings which illustrate two embodiments thereof by way of nonlimiting examples:

• - Figure 1 is a simplified elevational view of a first embodiment of the lock according to the invention and partially showing its exterior and interior opening control systems, the lock being locked and locked;
• - Figure 2 is a cross-sectional view along 2-2 of Figure 1;
• - Figure 3 is a simplified elevational view of a second embodiment of the lock according to the invention, shown in the locked and locked position;
• - Figure 4 is a partial side elevational view on an enlarged scale of the lock of Figure 3;
• - Figure 5 is a partial end elevational view along arrow K of Figure 4;
• - Figure 6 illustrates an embodiment of an electrical anti-theft and anti-aggression locking circuit intended to cooperate with a lock according to one of the preceding embodiments;
• - Figure 7 is an electrical diagram of a locking device supplementing that of Figure 6 for the anti-aggression and anti-theft locking of a rear door of a vehicle.

We see in Figures 1 and 2 a lock 1 which can be used on any door, in particular a motor vehicle door, and more particularly a front door not shown. It will be described below, for the convenience of the disclosure, in its use on a front door of the vehicle.

This lock 1 comprises a keeper 2 fixed on a frame of the door, a fork 3 articulated around an axis 4 on a case 5 of the lock, in which is formed an opening 6 for receiving the keeper 2. The fork 3 is provided with two arms 7, 8 for retaining the keeper 2 between them, as shown in Figure 1 where the lock is locked.

Each branch 7, 8 is provided with an end spout 7a, 8a and, when the lock is locked, the spout 7a cooperates with the corresponding spout 9a with a locking pawl 9 articulated around an axis 11 on the housing 5 The fork 3 is kept locked on the keeper 2 by the pawl 9 as long as the latter is in this position.

This lock device also comprises means for operating the pawl 9, which comprise a lever 12 connected to two manual control systems 13, 14 of said lever 12, respectively for the external control and for the internal control of the door. Each opening control 13, 14 is provided with a rod 16, 17 associated, by means of members not shown, with the exterior and interior handles for opening the door, and a slide 18, 19, one end of which is fixed to a corresponding end of the rod 16, 17.

An elongated opening 21, 22 is formed in the end of the slide 18,19 opposite the rod 16,17. In these two openings 21,22 is engaged one end 12a of the lever 12, and, in its rest position (Figure 1), each end of the slide 18, 19 contiguous to the end portion 12a of the lever 12 is in contact with a lug elastic 23, 24 of a respective switch 25, 26 comprising a fixed stud 27, 28 for contact with a corresponding stud 29, 31 of the elastic tabs 23, 24.

Each switch 25, 26 is part of a central electric circuit for controlling theft prevention and anti-aggression, shown in Figures 7 and 8 and which will be described below.

The sliders 18, 19 pass through the housing 5 as well as respective coil springs 10, 20 which bear on the housing 5 to return them to a rest position visible in FIG. 1, in which they keep the switches 25, 26 open.

The lever 12 is articulated on the case 5 around the same axis 11 as the pawl 9. The electromechanism 15 comprises a coil 32, connected to the central electrical circuit by connections 32a, 32b, and in which a pin 33 can slide axially. The lever 12 and the pawl 9 are pierced, opposite the axis of the spool 15 and the pin 13, and in line with one another, two openings 34, 35 in which the pin 33 is held engaged by a return spring 36 inside the coil 32 and bearing on a cap 37 covering a support 38 of the coil 32.

When the coil 32 is not supplied, the spring 36 maintains the pin 33 in the openings 34, -35 and consequently the lever 12 coupled in rotation with the pawl 9 around the axis 11. On the other hand, if the coil 32 is energized following the closure of one of the switches 25, 26 (as will be explained in detail with reference to Figure 7), this energization causes the withdrawal of the pin 33 inside the reel 32 and therefore disengaging the lever 12 relative to the pawl 9.

In order to clarify the operation of the lock and locking device assembly targeted by the invention, we will first describe the operation of the device shown in Figures 1 and 2, then later the operation of the corresponding electrical locking circuit of Figures 7 and 8.

Operation of the lock and the locking elements of Figures 1 and 2

The lock 1 being locked by the pawl 9, the sliders 18,19 and the switches 25, 26 are in the rest position shown, in which none of the exterior and interior controls of the door is actuated.

If the user presses a button for closing the anti-aggression switch of the central locking device, the switch 25 is activated by switching on. If a person then tries to open the door by actuating the external control associated with the rod 16 and the slider 18, the latter is driven in the direction of the arrow F by the rod 16, against the return force of the spring 10. This movement of the slider 18 therefore causes the contact 25 to close, the stud 29 of which is applied to the stud 27, and correspondingly the supply of the coil 32, by the direct current source to which the electric locking circuit is connected. . The pin 33 is then automatically retracted from the openings 34, 35 and the lever 12 is disengaged from the pawl 9. The slide 18 continuing its travel, then rotates around the axis 11 the lever 12, which can no longer drive the diquet9 , so that lock 1 remains locked and the assault attempt is thwarted.

When the actuation of the external control of the door ceases, the spring 10 automatically returns the slider 18 to its initial position, and therefore causes the opening of the switch 25. Since the coil 32 is no longer supplied, the spring 36 recalls the pin 33 in the openings 34, 35 and re-couples the pawl 9 in rotation with the lever 12.

If the user chooses the "anti-theft" mode of use of the central locking device, an attempt to open the door by one or other of the exterior and interior controls, therefore pulling on one or the other of the rods 16 and 17, causes the same sequence as that described above, the slider 19 being returned to its initial position by its return spring 20.

Second embodiment of the lock (Figures 3 to 5).

In this embodiment, the lever 39 for controlling the pawl 9 has two branches 41, 42 substantially in L, and is articulated at the junction of these branches on an axis 43 of the housing 5. One end 41a of the branch 41 is engaged in the slots 21, 22 of the slides 18, 19, while the second branch 42 is articulated rotatably at its end, about an axis 44, on the first 45 of two links 45, 46. The second link 46 is articulated on the pawl 9 around an axis 47, at its end opposite the axis 44. The two links 45, 46 are also articulated one on the other about an axis 48. The part of the ends of the links 45, 46 adjacent to the axis 48 and facing the electromechanical mechanism 51 has a rounded 30 intended to allow the articulation of the links 45, 46. It is noted that each link 45, 46 is provided, at its end close to the axis 48 , opposite to the electromechanism 51, of a terminal protuberance 55, 56 , these two protuberances being in mutual abutment when the links 45, 46 are in the extension of one another. The links are held in this position by the magnet 54, which is in fact attracted by the magnetic core 53. The links 45 and 46 thus constitute a toggle capable of opening at the articulation of the two links 45, 46 around axis 48.

The electromechanical mechanism 51 (FIG. 4) comprises a coil 52 containing a magnetic core 53, and a magnet 54 fixed to one of the links 45, 46, namely the link 45 in this example, in line with the core 53 and at low distance from it.

• Au repos, aucune des commandes d'ouverture de la porte n'étant actionnée, le dispositif est dans la condi- fion représentée aux Figures 3 et 4 : les deux biellettes 45, 46 sont dans le prolongement l'une de l'autre de part et d'autre de leur axe 48 d'articulation, du fait que la bobine 52 n'est pas alimentée et que l'aimant 54 est attiré par le noyau 53.

The operation of this toggle mechanism 45, 46 is as follows:

• At rest, none of the door opening controls being actuated, the device is in the condition shown in FIGS. 3 and 4: the two links 45, 46 are in the extension of one another by on either side of their axis 48 of articulation, owing to the fact that the coil 52 is not supplied and that the magnet 54 is attracted by the core 53.

If now, after activation of the anti-aggression or anti-theft locking device, an attempt to open one of the door controls occurs, the switch 25 or 26 associated with this control closes, the coil 52 is energized, and the magnet 54, pushed back by the core 53, exerts on the link 45 a thrust P. This thrust causes the link 45 to tilt around its articulation 44 and drives the axis 48, around which the two links 45, 46 tilt, the link 46 rotating more around its articulation 47 on the pawl 9. At the end of this tilting, the links 45, 46 come to occupy a V-shaped position symbolized by the lines 45a, 46a, so that the control link (Figure 3) between the arm 42 and the pawl 9 is broken (Figure 4). Therefore, the tilting of the lever 39, driven by the movement of the slide 18 or 19, has no effect on the pawl 9, which remains in the locking position of the fork 3, and the lock can not be opened.

If now due to a battery failure, the electric locking circuit is no longer supplied after the lock has been locked and locked, either in anti-theft or anti-attack mode, no current flows through the coil 52 when the exterior control or interior door opening control is operated. Therefore, the toggle 45, 46 remains in its position of Figure 3, in which the links 45, 46, located in the extension of one another, can transmit to the pawl 9 the rotation of the control lever 39 This allows the fork 3 to be unlocked, thus opening the lock and the door.

Thus, in the two embodiments of the lock and of its maneuvering means described with reference to FIGS. 1 to 5, a complete breakdown of the vehicle battery, occurring after anti-theft or anti-aggression of the doors, nevertheless allows the user to open the vehicle doors. This result therefore constitutes an essential advantage of the invention over known embodiments, by guaranteeing to the user of the vehicle the possibility of entering it after locking the doors and in the event of complete failure of the battery.

Description of the electrical locking circuit (Figures 6 and 7)

The circuit of Figure 6 ensures the anti-theft or anti-aggression locking of a vehicle door, preferably a front door, while the complementary circuit of Figure 8 ensures, in addition to the anti-theft or anti-aggression locking , a "child safety" conviction and is therefore particularly suitable for a vehicle rear door.

The circuit of FIG. 6 comprises, connected to a direct current source S, for example a 12 Volt vehicle battery, a first anti-theft reversing switch 11, a relay R1 for anti-theft locking, a second reversing switch 12 anti-aggression associated with a control button inside the passenger compartment of the vehicle, and an anti-aggression relay R2, the switch associated with the exterior opening control 25, the switch associated with the interior opening control 26 and the coil 32 (or 52) of the electromechanical mechanism. The reversing switch 11 can be operated by a control means such as a coded manual key 57 or a remote control 58 with infrared or radio waves.

The switch 26 is connected, in parallel with the switch 25, on the one hand to the coil 32 (52), on the other hand to the anti-theft relay R1, the other aforementioned elements being connected in series. In its rest position 1, the movable contact C1 of the reversing switch 11 is connected to ground, and in its active position 2, it connects the coil B1 of the relay R1 with the current source S. The relay R1 comprises, in addition to the coil 81, a movable contact C2 which can occupy either a rest position 1 or an active position 2 when the coil B1 is supplied. The pad 1 of the rest position of C2 is connected by a connection 59 to the pad 2 of the switch 12 corresponding to the active position of the contact C3 of the latter, its rest position 1 being connected to ground.

The pad 2 corresponding to the active position of the contact C2 is connected by a connection 61 to the switch 26, and self-supply resistors of the relay R1 provide the connection between, on the one hand the coil B1 and the connection 61 , and on the other hand the coil B1 and the movable contact C1.

The block 2 of the anti-aggression relay R2 corresponding to the active position of its movable contact C4 is connected by a connection 63 to the switch 25. Two self-supply resistors of the relay R2 establish a connection, on the one hand between coil B2 of relay R2 and connection 63, and on the other hand between coil B2 and contact C3 of switch 12.

A diode D1 placed on the connection 63 lets the current from R2 pass to the switch 25, and a second diode D2 ensures a connection between the connection 61 and a point 64 located between the diode D1 and the switch 25 by opposing when the current flows from point 64 to connection 61. The coil 32 (52) is connected in series with the coil B2 by a connection 65 on which are placed an "open door" safety switch 66 and a diode D3.

The switch 66, associated with the fork 3 in a manner known per se, is open when the door is closed, that is to say in the position of Figures 1 and 3, and closed when the door is open. The diode D3 makes it possible to short-circuit the coil B2 via the switch 66 when it is closed.

A connection 67 connects the relay R1 and the connection 61 to the switch 26.1 associated with the interior opening control of the rear door (Figure 7), this switch and a switch 25.1 associated with the exterior control of the rear door being connected in parallel with a grounded 32.1 (or 52.1) coil. A diode D4 is placed on the connection 62 between the switch 25.1 and the relay R2, so as to allow the passage of current only from R2 to the switch -25.1. A diode D6 is placed on the connection 67 between the switch 26.1 and the relay R1 so as to allow the passage of current from the latter to the switch 26.1, and a diode D5 connects a point 69 of the connection 67, located at upstream of the diode D6, at a point 71 of the connection 62 located between the diode D4 and the switch 25.1. The switches 25.1 and 26.1 are connected in parallel to a coil 32.1 or 52.1 as in Figure 6.

The operation of the electrical locking circuit of Figure 6 is as follows.

a) Conviction "Anti-aggression"

The goal is to condemn only the external door opening control (slide 18, Figures 1 and 3). The user presses the internal anti-aggression button, which places the contact C3 in its active position 2. The anti-theft relay R1 having its contact C2 in position 1, is therefore traversed by the direct current from the source S , which supplies the coil B2. Contact C4 therefore switches to position 2 active.

The safety switch 66 is open when the door is closed.

If under these conditions an attacker tries to open the door from the outside, this attempt causes, as explained with reference to Figures 1 to 5, the closing of the contact 25, therefore the supply of the coil 32 (52) and the automatic disengagement of the control lever 12 or 41 relative to the pawl 9, preventing the door from opening.

b) Anti-theft conviction

The circuit being in its initial position in FIG. 6, the user controls the switching of the switch C1 from its inactive position 1 to its active position 2, by means of the coded key 57 or the remote control 58 The coil B1 being supplied, switches the movable contact C2 to its active position 2. The switch 26 can therefore be supplied, as is the switch 25 by the diode D2, the diode D1 preventing the passage of current to the relay R2.

If an unauthorized attempt to open the door then occurs, either from the outside or from the inside, the corresponding switch 25, 26 closes and energizing of the coil 32 (52) causes, as already explained, the automatic disengagement of the control lever 12, 41 relative to the pawl 9.

As a variant, the two switches 25, 26 can be connected to a control lamp (50) (light-emitting diode) by means of two diodes D7, D8, the lamp 50 being lit when one of the contacts 25, 26 is activated .

c) Security to prevent an untimely assault conviction

If the user leaves his car by forgetting his keys inside it as well as closing a door, an anti-aggression conviction of the doors would prevent him from entering the interior of his car after an inadvertent closing of the door remained open.

In order to prevent this risk, a diode D3 is placed between the coil B2 of the relay R2 and the safety switch 66, this diode D3 authorizing the passage of the current from B2 to the switch 66.

Thus, if the front door controlled by this circuit remains open, the switch 66 is therefore closed, and earths the coil B2 of the relay R2 via the diode D3. If the reversing switch 12 is then placed in position 2 active by actuation of the corresponding button, no current flows through the coil B2, so that the switch C4 cannot come into position 2 active and that the control switch 25 can not be powered.

Operation of the locking circuit in Figure 7 (rear door)

This circuit is provided with a connection 70, supplied by the source S, and equipped with a "children" safety switch 60 and connected to the switch 26.1 for internal control at a point situated between the latter and the diode D6. When the safety switch 60 is closed, the interior control switch 26.1 is supplied, but not the exterior control switch 25.1, due to the interposition of the diode D6, which prevents the flow of current to diode D5. An attempt to open the rear door by its interior control by a child therefore causes the closing of the switch 26.1 and the automatic disengagement of the control lever 12 or 41 relative to the pawl 9, as previously described.

The table below summarizes the three possible locking methods described above for the front and rear doors of a vehicle.

The invention is not limited to the embodiments described and may include alternative embodiments. The electrical locking circuit of Figures 6 and 7 can in particular be modified by replacing the means described by any equivalent means, fulfilling the same locking functions. Relays R1 and R2 can be managed either by self-supply by the resistors shown, or by an electronic memory, in a manner known per se.

It will further be appreciated that the housing 5 may include the mechanisms of the fork 3, the pawl 9, the lever 12, 39, the slides 18, 19 and the switches 25, 26, so as to make the assembly hookable mechanically and electrically .

In addition, an alarm can be associated with the electrical control circuit.

The invention is applicable not only to vehicle doors, but also more generally to any opening associated with a lock or with a closure whose structure is of the type described above. This is the case for a number of locks for safes, hoods, glove boxes, sunroofs in vehicles in which the right to open is obtained by the operation of an unlocking lever which can be prohibited by means provided by the invention.

Claims (10)

1. An assembly of a door lock and a device for deactivating this lock, in particular for a vehicle door, with which assembly the lock comprises a keeper (2) fixed on a frame of the door, a fork (3) pivotally mounted in a lock case (5) in which an opening (6) for receiving the keeper (2) is made, this fork (3) being provided with two branches (7, 8) for retaining the keeper (2) therebetween, a catch (9) pivotally mounted on the lock case and being able to be placed in a position for locking the fork (3) on the keeper (2) in order to keep the door closed, means which are for shifting the catch (9) in order to enable the locking and unlocking of the fork (3) and which can be rendered inoperative by the deactivating device ; with which assembly the means for shifting the catch (9) comprise a lever (12, 13) connected to at least one system (13, 14) for manual control of the said lever in order to enable the activation of the catch and the locking of the lock, and an electromechanism (15, 51) capable both of keeping the control lever (12, 39) rotationally coupled with the catch (9) while an electric current is not flowing through this electromechanism and of disengaging the lever relative to the catch when the electromechanism is supplied with current ; and with which assembly the deactivating device comprises an electric circuit with centralized control and associated with the system (13, 14) for manual control of the lever (12, 39), characterized in that at least one switch (25, 26), being able to be closed by an approach travel of the said control system (13, 14), and the electromechanism (15, 51) are placed in the said electric circuit, the electromechanism being provided with means which are for automatically disengaging the lever relative to the catch and which are operated, after activation of the electric circuit, by a switch (25, 26) closure placing the electromechanism under voltage, and means for automatically producing this closure of the switch (25, 26) by a manual attempt to actuate the control system (13, 14) for the lever.

2. An assembly in accordance with Claim 1, intended in particular for a vehicle door, characterized in that it comprises two systems (13,14) for manual control of the leverwhich are exterior (13) and interior (14) relative to the door and are each provided with a slide (18, 19) in which there is made an oblong elongated aperture (21, 27) through which one end (12a) of the control lever for the catch (9) passes, and each end of the slides (18, 19) cooperates with a respective switch for exterior control (25) and interior control (26) which are arranged in such a manner that, on the one hand, when the slides are in the at rest position, the switches (25, 26) are open and because of this no current can flow through the electromechanism (15, 51) which in that case keeps the control lever (12, 39) rotationally coupled with the catch (9) and, on the other hand, the operation of one of the slides (18, 19) brings about the closure of the corresponding switch (25, 26) and consequently, when this switch is fed, the automatic disengaging, by the electromechanism, of the control lever (12, 39) relative to the catch (9), the lock then no longer being able to be opened.

3. An assembly in accordance with Claim 2, characterized in that the control lever (12) and the locking catch (9) are pivotally mounted on the lock case (5) about a common axis of rotation (11), and the electromechanism (15) comprises a coil (32) in which a pin (33) is axially slidable, the lever (12) and the catch (9) being pierced by two openings (34, 35) which are in alignment with each other and in which the pin (33) is kept, by a resilient return element (36), when the coil (32) is not being fed, whereas the placing of the coil under voltage, following upon the closure of a switch (25, 26), causes the retraction of the pin into the interior of the said coil and consequently the disengaging of the lever (12) relative to the catch (9).

4. An assembly in accordance with Claim 2, characterized in that the control lever (39) for the locking catch (9) has two branches (41, 42) substantially in an L configuration, is pivotally mounted, at the junction of these branches, on the lock case (5), one (41) of the branches is engaged in the elongated apertures (21, 22) in the slides (18, 19) while the second branch (42) is rotatably pivotally mounted at one end on the first (45) of two links (45, 46) which are pivotally mounted one on top of the other about an axis (48) while forming a toggle, the second link (46) being moreover pivotally mounted, at its end opposite the said axis (48), on the catch (9), and the electromechanism (51) comprises a coil (52), a magnetic core (53) housed within the latter and a magnet (54) which is fixed on one (45) of the links and opposite the core (53) and the coil (54) in such a way that, when the coil (52) is fed, the magnet (54) is repelled by the magnetic core (53) (the core and the magnet being placed with poles of the same sign facing each other) and causes rotation of the two links (45, 46) about their common axis (48) and consequently the disengaging of the lever (39) relative to the catch (9), whereas when the coil (52) is not fed, the links (45, 46) of this toggle are kept as prolongations of each other by the magnet (54) attracted by the core (53) and couple the lever (39) to the catch (9).

5. An assembly in accordance with any one of Claims 2 to 4, characterized in that the electric deactivating circuit comprises, connected to a source of direct current (S) ; an anti-theft first reversible switch (11) capable of being thrown by a control means such as a coded manual key (57) or a remote control (58), an anti-theft deactivating relay (R1), an anti-attack second reversible switch (12) and an anti-attack relay (R2), the switch associated with the exterior control (25), the electromechanism (15, 51), all these elements being connected in series, and the electromechanism being connected on the one hand to the switch associated with the exterior control (25) and on the other hand with the anti-attack relay (R2) which can be supplied with current via the anti-theft relay (R2) when a movable contact (C2) of the anti-theft relay is in an at rest position and when the anti-attack switch (12) is activated.

6. An assembly according to Claim 5, characterized in that the switch associated with the interior control (26) is connected, in parallel with the exterior control switch (25), on the one hand to the electromechanism (15, 51) on the other hand to the anti-theft relay (R2), and a first diode (D1) is joined up in circuit between the exterior-control switch (25) and the anti-attack relay (R2) so as to allow the passage of the current from the anti-attack relay to the exterior-control switch (25), a second diode (D2) being connected on the one hand to the exit of the first diode (D1) and on the other hand to the interior-control switch (26), in order to prevent the latter being fed from the anti-attack relay (R2) and on the contrary to allow the feeding of the switch associated with the exterior control (25) by the anti-theft relay (R1) when the latter is activated by the closure of the anti-theft switch (11), the first diode (D1) preventing in that case the passage of the current to the anti-attack relay (R2).

7. An assembly in accordance with Claim 6, characterized in that an "open door^* safety switch (66) associated with the fork (3) is joined up in circuit between the electromechanism (15, 51) of the door and the corresponding anti-attack relay (R2), and a diode (D3) is placed between the latter and the said "open door" switch (66) so that when this front door is open, the safety switch is closed and consequently connects a coil (B2) of the anti-attack relay (R2) to earth.

8. An assembly in accordance with any one of Claims 5 to 7, characterized in that the anti-theft (R1) and anti-attack (R2) deactivating relays are also connected to an electric deactivating circuit for a second door, in particular a rearvehicle door, and this circuit comprises an electromechanism (15,51), two switches associated with the exterior (25) and interior (26) controls, and diodes (D4, D5) connected between the latter to enable, as desired, the control of the anti-attack deactivation or anti-theft deactivation of the door.

9. An assembly in accordance with Claim 8, characterized in that the deactivating circuit of the door is provided with "child safety" means which are for deactivating the interior control of this door and which comprise for example on the one hand a "child" safety switch (60) connected to the interior-control switch (26.1) and on the other hand a fourth diode (D6) joined up in circuit between a linkage (70) of the said "child" safety switch (60) to the interior-control switch (26.1) and the second diode (D5) so as to prevent the passage of the current to the second diode and to the exterior-control switch (25.1).

10. An assembly in accordance with any one of Claims 1 to 9, characterized in that the case (5) simultaneously encloses the mechanisms of the fork (3) and of the catch (9), the lever (12, 39), the slides (18,19) and the switches (25, 26), so as to render the assembly mechanically and electrically unpickable.

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