EP0200577B1 - Electric lock, especially for a motor vehicle - Google Patents

Description

The present invention relates to electrically and mechanically operated locks, in particular intended for the doors of motor vehicles.

More specifically, the invention relates to a lockable electric lock of the type which consists, on the one hand, of a member capable of electrically and mechanically locking and unlocking the bolt / strike assembly associated with a door separating the interior of an enclosure from the outside, said member comprising an operating element movable from one to the other by three positions P _i , P ₂ , P _s , which correspond respectively to the opening, closing without locking and closing with locking of the door, and on the other hand, of a mechanism which can be operated by at least one manual control means ensuring the movement of the operating element from one to the other of these three positions, either electrically or mechanically, the manual control means comprising a rotary barrel.

FR-A 2 452 564 shows a lock of this kind in which an anti-theft protection position is provided. This document indicates that there is usually a lock on the driver's door using the key and the control barrel from which a centrally controlled closing arrangement can be operated at the same time as the driver's door lock , which is however actuated on its side mechanically by means of the key and the control barrel. Such an arrangement allows the interior of the vehicle to remain accessible when, for example after central locking, the central control closure arrangement can no longer be actuated due to a failure of its supply circuit. It is further indicated that the anti-theft protection lever can be actuated mechanically, for example by an operating rod which cooperates directly or indirectly with the control barrel.

The object of the invention is, above all, in a lock of the kind defined above, to establish maximum security in all possible scenarios in the event of a power failure on the vehicle, while retaining a simple and economical construction. , and easy handling.

In particular, in the event of a power failure, if the door is closed with the lock, it must be possible to unlock and open with a selective means such as a key; if the door is closed without being locked, the breakdown being, for example, due to an accident, it must be possible to open from the outside without any selective means.

FR-A 2 534 303 relates to a lock of the kind defined above but in which there is no provision for the possibility of opening the lock from the outside in the event of a power failure on the vehicle.

The lock according to the invention comprises a member capable of electrically and mechanically locking and unlocking the bolt / strike assembly associated with a door separating the interior of an enclosure from the outside; this member can be of any known type as soon as it comprises an operating element movable from one to the other by three positions Pi, P ₂ , P ₃ , which correspond respectively to the opening, the closing without locking and closing with condemnation of the door; in particular, this member may be of the type described in FR-A 2,534,303 cited above. In the lock according to the invention, there is associated with said member a mechanism which can be operated by at least one manual control means comprising a rotary barrel and ensuring the displacement of the operating element from one of these three positions to the other, either electrically or mechanically.

The lock according to the invention is characterized in that the manual control means further comprises a push button which can be operated from the outside, the barrel being able, under the action of a key, to rotate, between two positions, a finger disposed between the two branches, of a fork, said fork constituting one of the ends of a locking lever pivoting about a fixed axis, the other end of which carries a stud sliding in the groove of a opening lever pivoting about a fixed axis, said opening lever cooperating at one of its ends with the operating element, and, at its other end with the pusher, the cooperation between the operating element and the opening lever being made via a window of the opening lever which allows a movement of one relative to the other and allows, without moving the opening lever, to move the operating element from P ₁ to P ₂ or vice versa, the lever that can pivot under the action of the barrel finger between two extreme positions, the first of which corresponds, for the operating element, to position P ₃ , and the second of which allows the operating element to take, thanks at the travel in the window of the opening lever, the Pi or P _{2 positions} , the locking lever being associated with a first electrical contactor, which prevents the electrical supply of the lock by the external pusher (the electrical supply of the lock from the inside is always possible regardless of the position of the locking lever and therefore of the first electrical contactor) or the external paddle when said lever is in its first position and authorizes it otherwise, the push-button being associated with a second electrical contactor, which authorizes the electrical supply of the lock under the action of control of the user in order to bring the operating element dan s position P _i and prohibits it, in the absence of this action.

In a preferred embodiment, the manual control means also comprises a frieze zipper connected to the locking lever and maneuverable from inside the enclosure; of the sprtte, and independently of the power supply of the lock, the lock which corresponds to the frieze zipper on which one acts can be manually locked or unlocked. In addition, it can advantageously be provided that the manual control means also comprises an emergency pull cord connected to the opening lever and which can be operated from inside the enclosure; in this way, and independently of the power supply of the lock, we can always ensure the opening of the door from the inside.

As will be explained below, in the detailed description of the exemplary embodiments, the structure of the electric lock which has been defined above makes it possible, in the event of a power failure, in a manner known per se, to ensure that the door closed with a lock can be opened from the outside by means of the key associated with the barrel and that, on the other hand, the door closed without a lock can be opened from the outside; according to the invention, this opening from the outside is obtained by simple action on the pusher. Indeed, in the first case, the key makes it possible to turn the barrel rotor and to drive, thanks to the barrel finger, the pivoting of the locking lever to bring the latter into the unlocked position. In this position, the opening lever can cooperate with the pusher, and, therefore, an action of the user on the pusher makes it possible to bring the operating element into the position P ₁ corresponding to the opening. In the second case, the operation is carried out as indicated above, except that, at the start, the lock not being locked, the pusher is already in the position of cooperation with the opening lever, so that no action on the barrel is necessary.

It should be noted that, in the case where the electrical supply is not ensured, any mechanical action tending to ensure manually, from the inside or from the outside, the locking, unlocking or opening of the lock only results in the lock directly interested in the action of the user without the position of the other vehicle locks being affected.

In the case where the electrical supply to the lock is normally ensured, it is possible, with the structure of the lock according to the invention, to perform all the functions from the outside or from the inside of the vehicle, namely setting up place the operating element in the positions Pi, P ₂ or P ₃ , both from the outside and from the inside; but in this case, it is possible electrically, from the action carried out on a given lock, to command the same action on one or more other locks of the vehicle: it suffices, in a known manner, to connect the lock contactors to an electronic central unit which transmits information from one lock to the others. This is how we can lock all the vehicle locks from the outside by acting only on the barrel of one of them; if the vehicle has frieze pulls, it will likewise be possible, by acting on a single frieze pull, to lock all the vehicle locks. Likewise, whether starting from the closed condemned position or closed without condemnation, it will be possible to ensure, from the outside or from the inside, the opening position. Indeed, if the lock is in the closed position with locking, the locking lever is in its first position and, in this case, the first contactor prevents the power supply to the lock so that an action on the pusher cannot cause the electric control of the lock. If one acts on the barrel to bring the locking lever by its finger into its second position, the prohibition on supplying the first contactor disappears, and, in this case, an action on the pusher causes the electrical supply to the lock by action on the second electrical contactor. The opening from the outside, from a closed lock without condemnation, is carried out as indicated above, except that there is no need to act on the barrel and that the simple action on the pusher is sufficient. The unlocking of the interior is carried out by means of the frieze zipper by passing the locking lever from its first to its second position, which for the first contactor has the same result as an action from the barrel; unlocking can therefore affect several vehicle locks. To bring the lock to the open position, it suffices to press the open button which powers the lock motor and brings the operating element to the Pi position without the opening lever having to move, relative movement being authorized due to the existence of the window of the opening lever.

Advantageously, it is possible to provide for the barrel finger to be carried by a disc mounted idly in rotation on the barrel axis, the pivoting of said disc being controlled by a stud fixed to the barrel rotor, said stud moving in an arcuate opening of circle extending over an angular sector equal to the movement of the rotor in the direction of locking or unlocking. However, the aforementioned disc can also be mounted fixed on the barrel rotor.

According to a preferred embodiment, the movement of the operating element is a translation; the operating element is a rack which cooperates with an electrically driven pinion.

In a first variant, the barrel is mounted in the pusher, the action of the pusher on the opening lever being effected by the finger for that of the two positions thereof which corresponds to the first position of the lever conviction, and not carried out in the other position; in this embodiment, the movement of the pusher first causes the operation of the second contactor then, at the end of the stroke, the mechanical action on the opening lever. Provision may be made for the action of the push button on the second contactor to disappear before the push button comes to cooperate with the opening lever; in this way, in case the door presents opening difficulties due, for example, to a bonding of the door seals by freezing in winter, it suffices to bring the pusher to the bottom of the travel for the lock to be brought in the open position by mechanical action on the opening lever without the second contactor remaining closed, which avoids long-term power supply to the electric lock motor in the locked position and which therefore eliminates a risk of deterioration.

In another variant, the pusher is independent of the barrel; it comprises a hooking means which mechanically drives the opening lever when the user acts on said pusher, but which is disconnected from the opening lever when the latter is in the position corresponding to the position P ₃ of the operating element; in this variant, the pusher can be a pivoting lever subjected to the action of a return spring.

To clearly understand the object of the invention, we will now describe, by way of purely illustrative and nonlimiting examples, two embodiments shown in the accompanying drawing.

• - la figure 1 représente schématiquement une serrure selon la première variante de l'invention, cette serrure étant en position condamnée ;
• - la figure 2 représente schématiquement une coupe selon II-II de la figure 1 ;
• - la figure 3 représente la serrure de la figure 1 en position décondamnée ;
• - la figure 4 représente schématiquement une coupe selon IV-IV de la figure 3 ;
• - la figure 5 représente schématiquement la serrure de la figure 1 dans la position où l'ouverture est commandée électriquement ;
• - la figure 6 représente schématiquement la serrure de la figure 1 dans la position dans laquelle l'ouverture est commandée manuellement ;
• - la figure 7 représente schématiquement une deuxième variante de réalisation de la serrure selon l'invention, cette serrure étant représentée en position fermée avec condamnation;
• - la figure 8 représente schématiquement une coupe selon VIII-VIII de la figure 7 ;
• - la figure 9 représente schématiquement la serrure de la figure 7 dans la position de fermeture sans condamnation ;
• - la figure 10 représente schématiquement la serrure de la figure 7 dans la position correspondant à une ouverture électrique ;
• - la figure 11 représente schématiquement la serrure de la figure 7 dans la position correspondant à une ouverture manuelle.

On this drawing :

• - Figure 1 schematically shows a lock according to the first variant of the invention, this lock being in the locked position;
• - Figure 2 schematically shows a section along II-II of Figure 1;
• - Figure 3 shows the lock of Figure 1 in the unlocked position;
• - Figure 4 schematically shows a section on IV-IV of Figure 3;
• - Figure 5 schematically shows the lock of Figure 1 in the position where the opening is electrically controlled;
• - Figure 6 schematically shows the lock of Figure 1 in the position in which the opening is controlled manually;
• - Figure 7 shows schematically a second alternative embodiment of the lock according to the invention, this lock being shown in the closed position with locking;
• - Figure 8 schematically shows a section along VIII-VIII of Figure 7;
• - Figure 9 schematically shows the lock of Figure 7 in the closed position without locking;
• - Figure 10 shows schematically the lock of Figure 7 in the position corresponding to an electric opening;
• - Figure 11 shows schematically the lock of Figure 7 in the position corresponding to manual opening.

Referring to Figures 1 to 6, it can be seen that the entire locking and unlocking member of the lock according to the invention has been designated by 1 in its entirety. The member 1 will not be described in detail since it is of the type described in the example given in FR-A 2 534 303. It will be recalled that, according to this example, the locking and unlocking member 1 has internally an electric motor which, by means of a gear train and a clutch, controls the translation of a rectilinear rack constituting the operating element of the lock according to the invention. This operating element ends with an axis 2 constituting, in the drawing, the only visible part of the operating element. According to the invention, the lower stop of the operating rack has been moved away, so that said rack, and therefore the axis 2, can take three distinct positions: a position P _i corresponding to the opening, a position P ₂ corresponding to closing without locking and a Ps position corresponding to closing with locking. In the drawing, the axis 2 has been represented in the three different positions: in FIGS. 5 and 6, the axis 2 is in the high position, which corresponds to the position P _i of opening of the operating element - see; that is to say in the position in which the rack has pulled up the pawl, which blocks the bolt of the lock. In the drawing, there is shown in dotted lines the opening 3 which allows the penetration of the keeper 4 cooperating with the bolt. In Figure 3, the axis 2 has the position corresponding to the position P ₂ of the operating element, that is to say corresponding to the closure without locking. In Figure 1, the axis 2 has the lowest position, that is to say that which corresponds to the position P ₃ of the operating element relating to the closure with locking.

The lock according to the invention comprises a mechanism consisting of a locking lever 5 and an opening lever 6. The lever 5 can pivot freely around an axis 7 carried by the housing of the member 1; the lever 6 can pivot freely around an axis 8 carried by the housing of the member 1. The lever 5 and the lever 6 are substantially bent at right angles.

The lever 5 comprises, at one of its ends, a fork made up of two arms 9a, 9. At the other end, of the lever 5 is arranged a stud 10, which slides inside a groove 1 made in the opening lever 6. On the end of the opening lever 6 where the groove 11 is located, a window 12 has been made inside which the axis 2 can move freely. The end of the lever 6 , which does not carry the window 7, is constituted by an arm situated at the level of the zone which separates the arms 9a and 9_b from the locking lever 5. The levers 5 and 6 consist of metallic dishes arranged in planes parallel to the housing of the member 1, the axes 7 and 8 being perpendicular to said housing.

The lock according to the invention also comprises a frieze pull tab 3 connected to the end of the arm 9a of the fork of the locking lever 5 and an emergency pull pull 14 connected to the opening lever 6 in the area between the window 12 and groove 11.

The lock according to the invention finally comprises a safety barrel which is controlled by a key 15. This barrel is mounted inside a cylindrical plunger 16 capable of sliding in a control cylinder 17. The pusher 16 is capable of 'a displacement in translation along the axis of the cylinder 17 and in such a displacement, it cooperates with a second electrical contactor 18. The pusher 16 has at its end a disc 19 on the edge of which an opening 20 is made; the disc 19 is crazy in rotation on the axis of the barrel but the barrel rotor carries at its end a stud 21 which cooperates with the opening 20. The angle over which the opening 20 extends, which forms a notch on the edge of the disc 19, is equal to the angle of movement of the rotor in the barrel stator. In this way, from the rest position in which the key 15 can enter inside the rotor, a position which corresponds to that shown for the stud 21 in FIGS. 2 and 4, the stud 21 can be turned in clockwise or counterclockwise, then return the stud 21 to its initial position to be able to take out the key while the disc 19 remains in the end position. Thus, from FIG. 2, if the barrel is rotated so that the stud 21 moves clockwise, the disc 19 is brought into the position shown in FIG. 4 and we can then return the stud 21 to its initial position in order to be able to remove the key 15 from the barrel. The disc 19 is integral with a barrel finger 22. When the disc 19 occupies the position shown in FIG. 2, the barrel finger 22 is arranged obliquely between the two branches 9a and 9b of the fork of the locking lever 5 and the finger 22 does not cut the plane of the opening lever 6. On the contrary, in the position shown in FIG. 4, the barrel finger 22 is perpendicular to the plane of the two levers 5 and 6 and it is located between the branches 9a and 9b of the locking lever 5 and in line with the edge of the opening lever 6.

In the absence of any action by the user, the pusher 16 projects very little outside of the cylinder 17 inside which it is brought back elastically by a spring. On the other hand, if the user presses the plunger 16, the latter comes, in translation, to act on the second contactor 18 to authorize the electrical supply of the electric motor of the member 1.

The housing of the member 1 also carries a first contactor 23 which cooperates with that of the branches of the locking lever 5, which is between the axis 7 and the axis 10. When the locking lever 5 is in the position shown in FIG. 1, the contactor 23 prevents the electrical supply to the motor of the member 1 by the external pusher 16; on the contrary, in the positions represented in FIGS. 3, 5 and 6, the locking lever 5 does not press on the contactor 23 and, in this case, the electrical supply of the motor of the member 1 is authorized. contactors 18 and 23 are in practice micro-contacts which are connected to an electronic unit (not shown), said housing being itself connected on the one hand to the electric motor of member 1 of the lock, and, on the other hand , to the motors and contactors of the other vehicle locks.

The operation of the lock which has just been described takes place as indicated below. If we assume first of all that the electrical supply to the lock is ensured in a normal manner and if we start from the closed position with locking which is represented in FIG. 1, we see that any action on the pusher 16 cannot result in power supply to the lock motor since the first contactor 23 prohibits this power supply due to the support of the locking lever 5. The action on the pusher cannot therefore result in an opening Door. If one wishes to open the door from the outside of the vehicle, it suffices to turn the barrel with the key in the direction which brings the locking lever 5 to the position which is shown in FIG. 3; in this movement, the lever 5 rotates the lever 6, which drives, through the lower edge of the window 12, the axis 2; axis 2 is thus found in position P2 corresponding to closing without locking; the first contactor 23 is no longer in contact with the lever 5 and consequently authorizes the supply of the motor to the lock from the outside by acting on the pusher 16 which comes to close the second contactor 18.

By cons, in the closed position with locking as shown in Figure 1, if you want to open from inside the vehicle, simply act on the interior opening control (not shown) because it always allows the power supply of the lock whatever the position of the lever 5 and, consequently, of the contactor 18.

After opening the door, closing is done simply by slamming the door, which engages the keeper 4 in the opening of the bolt. If one wishes to carry out the locking of the lock, the key 15 is introduced into the barrel; the disc 19 is then in the position shown in Figure 4 and the rotor is rotated to move the stud 21 counterclockwise so as to return the disc 19 to the position shown in Figure 2 In this movement, the finger 22 rotates the locking lever 5, which brings the lock back to the position shown in FIG. 1. The locking has thus been carried out from the outside. Locking from the inside can be carried out by pulling up the frieze tab 13, which rotates the locking lever 5 to bring it to bear on the contactor 23, which prohibits subsequent supply of the motor electric lock by the external pusher and, possibly, other vehicle locks.

In the event that the electrical supply to the lock is not ensured, it is possible to obtain the opening of the lock by manual action. If the lock is initially in the locked position, as shown in FIG. 1, in this case, opening the lock from the outside requires prior unlocking by means of the key 15 as indicated above, this unlocking is effected by controlling with finger 22 the pivoting of the locking lever 5, to bring the lock into the state shown in FIG. 3. To ensure the opening of the lock thus unlocked from the outside, the user presses, according to the arrow F1 of FIG. 6, on the pusher 16 and he pushes the pusher fully down so that the finger 22 comes to cooperate with the arm of the opening lever 6 which is opposite the fork 9a, 9b; this cooperation results in a pivoting of the lever 6 and the lower edge of the window 12 raises the axis 2 to bring the operating element into the position Pi, which allows the door to be opened. It should be noted that the stroke of the pusher 16 is, in this manual opening, considerably greater than that which was necessary to ensure the electric opening under the action of the force F ₂ shown in FIG. 5. From the inside , whether the lock is locked or not, to obtain the opening, action is then taken on the emergency pull tab 14 according to arrow F ₃ , which causes the pivoting of the opening lever 6 and therefore drives the axis 2 in the position P ₁ corresponding to the opening. The pivoting of the lever 6, via the groove 11 and the axis 10, simultaneously drives the lever 5 into its unlocked position if the lock was in the locked position. So we can see that in the event of a power failure, we can always open the door from the inside; we can, moreover, always open the door from the outside if it is not locked and we can open it with a key if the lock was initially locked.

In Figures 7 to 11, a second alternative embodiment is shown. In this variant, the barrel has been separated from the pusher; apart from this difference, all the elements of the second variant are substantially the same as those of the first variant. This is the reason why, on the one hand, the second variant will be described more succinctly than the first variant, and on the other hand, the reference numbers used to designate the elements of the second variant, will be those used to designate the corresponding elements of the first variant increased by 100.

In this second variant, there is therefore a locking lever 105 pivoting around the axis 107 carried by the housing 101 and an opening lever 106 pivoting around an axis 108, the planes of the two levers 105 and 106 being parallel . One end of the lever 105 consists of a fork 109a, 1091 ₂ while the other end carries an axis 110, which slides in a groove 111 of the lever 106. The lever 106 comprises, in the vicinity of the groove 111 , a window 112 inside which the axis 102 of the operating element of the member 101 can move freely. The fork 109a, 109b cooperates with a barrel finger 122, which is integral with a disc 119 fixedly mounted on the barrel rotor. The rotation of the barrel is controlled by a key 115. The locking lever 105 cooperates with a first contactor 123 carried by the housing of the member 101.

The stator of the barrel, which controls the finger 122 is fixedly mounted inside the cylinder 117. The vehicle door has a handle 116, which constitutes the push-button of the lock. The handle 116 is a lever pivoting around the axis 150; the pivoting lever 116 is subjected to the action of a return spring 151 which pushes it so as to come to press the second contactor 118. In this embodiment when the second contactor 118 supports the action of the lever 116, it prohibits the 'power supply to the lock's electric motor; on the contrary, when the lever 116 is actuated in the direction of the arrow F ₄ by the user, the switch 118 authorizes the supply of the electric motor of the lock.

The opening lever 106 has at its end, which is opposite to that where the window 112 is located, an extension 152 articulated on the lever 106 by means of the axis 153. The extension 152 can be hooked on the handle 116 (see Figures 9 and 10) when the lever 106 is in the position corresponding to closing without locking. On the other hand, the attachment cannot be ensured when the lock is in the position corresponding to a closure with a lock, as is the case in FIG. 7.

If the lock is locked and locked, the lever 105 takes the position shown in FIG. 7 and presses the switch 123, which prevents the electric motor from being supplied to the lock by the external handle. Simultaneously, the lever 106 pivots so that its extension 152 no longer comes into cooperation with the handle 116. An action on the handle 116 therefore has no effect. In order for the action on the handle 116 to be able to have a result, it is necessary to make a prior unlocking; such an unlocking can be operated from the outside by means of the key 115, which drives the finger 122 and makes the locking lever 105 pivot to bring it into the position shown in FIG. 9; the lever 106 then hooks onto the handle 116. In normal operation, any action on the handle will cause an action on the second contactor 118 and, since the prohibition initially provided by the first contactor 123 is removed , such action on the handle 116 will result in an electrical control of the opening of the lock. In the event of a power failure, the user simply has to pull the handle 116 at the bottom of the travel so that the lever 106 is mechanically driven as indicated in FIG. 11, which brings the axis 2 to the corresponding position P ₁ at the opening.

Of course, as in the first variant, unlocking or locking can be carried out by means of the frieze zipper 113, which is connected to the branch 109a of the fork of the locking lever 105. In addition, the opening can also be perform from the inside, either by power supply to the lock motor, or in the event of a power failure, by action on the emergency pull rod 114 according to the arrow Fs in FIG. 11, whether the lock is locked or not.

It is understood that the embodiments described above are in no way limiting and may give rise to any desirable modification, without thereby departing from the scope of the invention as defined by the claims.

Claims (12)

1. Electrically lockable lock, in particular for a motor vehicle, consisting, on the one hand, of a member (1, 101) capable of ensuring electrically and mechanically the fastening and release of the bolt/keeper assembly associated with a door separating the interior of an enclosure from the exterior, the said member comprising an actuating element (2) displaceable from one to another of three positions Pi, P₂, P₃, which correspond respectively to opening, closure without locking and closure with locking of the door, and, on the other hand, of a mechanism which can be actuated by, at least, one manual operating means (13 to 16, 113 to 116) ensuring displacement of the actuating element from one to another of its three positions, either electrically or mechanically, the manual operating means comprising a rotating barrel, characterized in that the manual operating means comprise moreover a push button (16, 116) which can be actuated from the exterior, the barrel being able, owing to the action of a key (15, 115), to turn, between two positions, a finger (22, 122) arranged between the two arms (9a-9b, 109a-109b) of a fork, the said fork constituting one of the ends of a locking lever (5, 105) pivoting about a fixed axis (7, 107), the other end of which has a stud (10, 110) sliding in the groove (11, 111) of an opening lever (6, 106) pivoting about a fixed axis (8, 108), the said opening lever cooperating via one of its ends with the actuating element and via its other end with the push button (16, 116), cooperation between the actuating element and the opening lever (6, 106) being effected by means of a window (12, 112), which allows displacement of one relative to the other and enables, without moving the opening lever, the actuating element to be displaced from P₁ to P₂ or vice versa, the locking lever (5, 105) being able to pivot owing to the action of the barrel finger (22, 122) between two end positions, the first one of which corresponds, for the actuating element, to the position P₃ and the second one of which allows the actuating element to assume, owing to the displacement inside the window (12, 112) of the opening lever (6, 106), the positions Pi or P₂, the locking lever (5, 105) being associated with a first electrical contactor (23, 123) which prevents electrical energization of the lock by the push button or the external blade (16) when the said lever is in its first position and permits it when this is not the case, the push button (16, 116) being associated with a second electrical contactor (18, 118) which allows energization of the lock when an operating action is performed by the user in order to bring the actuating element into the position Pi and prohibits it when this action is not performed.

2. Lock according to Claim 1, characterized in that the manual operating means also comprises a frieze cord (13, 113) which is connected to the locking lever (5, 105) and can be actuated from the interior of the enclosure.

3. Lock according to one of Claims 1 or 2, characterized in that the manual operating means also comprises a safety cord (14, 114) which is connected to the opening lever (6, 106) and can be actuated from the interior of the enclosure.

4. Lock according to one of Claims 1 to 3, characterized in that the finger (22, 122) of the barrel is carried by a disc (19, 119) mounted rotatably about the axis of the barrel, pivoting of the said disc being controlled by the rotor of the barrel.

5. Lock according to one of Claims 1 to 4, characterized in that the displacement of the actuating element is a translational movement.

6. Lock according to one of Claims 1 to 5, characterized in that the actuating element is a rack, which cooperates with a pinion moved electrically.

7. Lock according to one of Claims 1 to 6, characterized in that the barrel is mounted in the push button (16), the action of the push button (16) on the opening lever (6) being performed by means of the finger (22) for that of the two positions of the latter which corresponds to the first position of the locking lever (5) and not being performed in the other position, the action of the push button (16) on the second contactor (18) being performed, at the start of travel, before the action of the push button (16) on the opening lever (6).

8. Lock according to Claim 7, characterized in that the action of the push button (16) on the second contactor (18) disappears before the push button (16) cooperates with the opening lever (6).

9. Lock according to one of Claims 1 to 6, characterized in that the push button (116) comprises an engaging means, which mechanically entrains the opening lever (106) when the user acts on the push button (116), but which is disconnected from the opening lever (106) when the latter is in the position corresponding to the position P₃ of the actuating element.

10. Lock according to Claim 9, characterized in that the push button is a pivoting lever (116) subject to the action of a return spring (151).

11. Lock according to one of Claims 1 to 10, characterized in that its fastening and release member (101) comprises a rotating bolt and a pawl, the bolt forming a seat for a keeper (4, 104), the bolt being recalled elastically towards an opening position in which the keeper can penetrate into the seat of the bolt or escape from it, and being retained in a fastening position by the pawl, the latter being recalled elastically towards its position in which it retains the bolt in a locking position, an electrical control system comprising an electric motor driving a speed reducer, which is coupled by a clutch to a pinion which meshes with a rack constituting the pawl actuating element, the said rack being connected by the axis (102) to the opening lever (6, 106) and being subject to the action of a recall means which pushes it from the position Pi to the position P₂.

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