EP3511496B1 - Lock for automotive vehicle with three positions - Google Patents

Description

The present invention relates to an electric lock for a door leaf of a motor vehicle, in particular for a door, a tailgate, or a trunk of a motor vehicle.

A motor vehicle lock is intended to be fixedly mounted on a motor vehicle opening and typically comprises a bolt intended to pivot, when closed, in one direction around a keeper fixed to the structure of the motor vehicle in order to ensure closing the opening. The opening of the opening is allowed by a rotation of the bolt in opposite direction. The rotation in the opposite direction during the opening of the opening follows the displacement of the external or internal handle which is connected to the lock by a control means which generally acts on an opening lever in order to pivot the latter which in turn releases the bolt via a hooking device in the desired direction.

In the process of electrically opening a lock in normal operation, the pawl which retains the bolt is driven by an electric actuator so as to release the bolt. As soon as it is no longer retained by the pawl, the bolt can pivot to release the strike. Once the electric actuator is no longer engaged with the pawl, the pawl is returned by a spring towards the bolt.

In general, Locks use one motor per function. The functions can be of the locking type, super locking, child safety lock, assisted closing called " cinch-in " or even electric opening. Thus, for the locking, super locking, child safety locking type functions, the motor is generally used on a sequence from stop to stop in order to be able to reset the mechanical state by launching the following sequence by an inverted supply of the motor.

For assisted closing or electric opening type functions, the motor power is generally used in one direction often, on a sequence from stop to stop, with a return mechanism called commonly "back-drive" to reset the system for the next operation. The return movement is either ensured by the motor, or enabled by a declutching associated with a mechanical return when the current is cut. The return operation ends on a stop and generally no reverse motor supply can be used for another function.

Using only one engine, we know the demand US 2015 145265 having an actuator configured to change a locking assembly from a closed state in which an element is locked to an open state in which the article is unlocked. An operational bolt in a first position for engaging a keeper connected to another element of the vehicle when the locking assembly is in the closed state. The bolt in a second position allows the keeper to disengage when the locking assembly is in the open position. The actuator includes a driver and a gear system. The gear system is operational for moving a release element. The release member is configured to be operatively connected to the bolt so that movement of the release member causes the bolt to be moved to the second position. This is a lock limited in functions due to the device and the monostable nature of the actuator. It is a lock for electric opening.

We also know the demand FR 2783551 disclosing an electric lock for the door of a motor vehicle, comprising a lock casing, a first compartment of which contains a bolt and a pawl, and a second compartment of which sealingly contains a locking lever capable of putting the lock in the locked / released position -condemned, and an electric motor for assistance in opening, characterized in that, in the second compartment, the electric motor is capable of driving in rotation, by means of a gear train, a wheel toothed provided with at least one radially eccentric pin, said pin being intended, during the rotation of the wheel, to drive a control lever until a pin radially eccentric on said wheel comes into contact with an elastic stop at the end of the opening stroke, the electric power supply to the motor being delayed for a time sufficient to ensure that said pin reaches the elastic stop, said control lever being integral in rotation d 'an opening lever arranged in the first compartment and able to cooperate with the pawl to move it to the release position of the bolt. This disclosure shows a lock with a motor for electric opening and a motor for locking / unlocking, with a compactness which can be improved. In addition, in order to know the position of the actuator, contactors or buttons are necessary in order to supply the electronic control unit with information.

In addition, we also know the demand EP 1035280 A disclosing an electrically actuated lock for a motor vehicle door, provided with a locking unit, a control unit which can be connected to corresponding manual control members associated with the door and capable of interacting with the locking unit for opening it, first and second deactivation means which can be selectively activated to deactivate the opening of the locking unit from inside and outside of the vehicle respectively, and an electric actuator having an output element movable from a rest position along a first path to cause the opening of the locking unit and along a second path, different from the first path, to selectively activate the first locking means. This request thus discloses a double spring return lock using springs requiring an oversized motor in order to overcome the force of the springs during the functional journeys, the lock uses two motors in all. In addition, at least one of the end-of-travel positions is not stable and finally this lock can become more compact.

Thus the prior art uses several motors to be able to access different functions or is content with an actuator which can adopt two positions limiting the functionality of the associated locks. There are locks with a motor and which are capable of providing several functionalities, however in order to use the same motor for several different operations, these locks must be equipped with micro-switches, and the electronic control unit must stop the supply accordingly, so that another stroke is available for provide another function. The actuator is therefore controlled by sending instructions at each stop in a sequential and not very repeatable manner.

When such sequential management is used, the repeatability of the operation is poor, because it depends on the responsiveness of the system and the inertia of the latter. Usually, such a lock must be provided with an independent electronic management included, so as not to request the central unit of the vehicle to gain in reactivity. All this clogs the lock as a whole and does not facilitate the integration of backup batteries necessary for power-off operation in the event of maintenance or breakdown of the car battery, for example.

• un levier central d'ouverture,
• un actionneur destiné à occuper trois positions de butée et apte à coopérer avec le levier central d'ouverture, ledit actionneur comportant:
• un entraîneur comportant une roue dentée entraînante et une roue entraînée coaxiales, la roue dentée entraînante étant apte à entraîner en rotation la roue entraînée au moyen d'un premier organe d'entraînement et ladite roue entraînée comportant un second organe d'entraînement,
• un moteur prévu pour entraîner en rotation ladite roue dentée entraînante de l'entraîneur au moyen d'une vis sans fin,
• le levier central d'ouverture étant apte à être déplacé par la roue entraînée de l'entraîneur au moyen du second organe d'entraînement.

Finally, EP 1,234,936 discloses an electric lock for a motor vehicle opening comprising:

• a central opening lever,
• an actuator intended to occupy three stop positions and capable of cooperating with the central opening lever, said actuator comprising:
• a driver comprising a driving toothed wheel and a coaxial driven wheel, the driving toothed wheel being capable of driving the driven wheel in rotation by means of a first drive member and said driven wheel comprising a second drive member,
• a motor designed to drive said driving gear wheel in rotation by means of a worm screw,
• the central opening lever being able to be moved by the driven wheel of the driver by means of the second drive member.

One of the wheels of the coach comprises a first oblong light in the form of an arc of a circle and the other wheel comprises the first drive member extending through said first light, the coach being able to perform a rotary stroke of one wheel without rotating the other wheel.

The objective of the invention is therefore to provide a lock making it possible to respond to these disadvantages in terms of compactness, versatility, motorization, and economy of assembly elements.

• un pêne apte à pivoter autour de son axe entre une position angulaire d'emprisonnement d'une gâche et une position de libération de gâche,
• un cliquet apte à pivoter autour de son axe entre une position angulaire de verrouillage dans laquelle le cliquet est susceptible de coopérer en butée avec un cran du pêne de manière à retenir ledit pêne en position d'emprisonnement de gâche et une position angulaire escamotée dans laquelle le pêne est libre en rotation autour de son axe,
• un levier central d'ouverture, ledit levier étant en appui sur le cliquet et apte à déplacer ledit cliquet dans sa position angulaire escamotée,
• un actionneur destiné à occuper trois positions de butée et apte à coopérer avec le levier central d'ouverture, ledit actionneur comportant :
  • un entraineur comportant une roue dentée entraînante et une roue entraînée co-axiales, la roue dentée entraînante étant apte à entraîner en rotation la roue entraînée au moyen d'un premier organe d'entrainement et ladite roue entraînée comportant un second organe d'entrainement,
  • un moteur prévu pour entraîner en rotation ladite roue dentée entraînante de l'entraîneur au moyen d'une vis sans fin,
  • Un levier central de transfert apte à être déplacée en translation par la roue entraînée de l'entraîneur au moyen du second organe d'entrainement et dont le mouvement est apte à être transmis au levier central d'ouverture pour déplacer le cliquet dans sa position angulaire escamotée,
  • tel que l'une des roues de l'entraîneur comporte une première lumière oblongue en forme d'arc de cercle et l'autre roue comporte un premier organe d'entrainement s'étendant à travers ladite première lumière, l'entraîneur étant apte à effectuer une course rotative d'une roue sans entraîner en rotation l'autre roue.

To this end, the lock according to the invention provides an electric lock for a motor vehicle opening comprising:

• a bolt capable of pivoting about its axis between an angular position of imprisonment of a keeper and a position of release of keeper,
• a pawl capable of pivoting about its axis between an angular position of locking in which the pawl is capable of cooperating in abutment with a notch of the bolt so as to retain said bolt in the keeper imprisonment position and a retracted angular position in which the bolt is free to rotate about its axis,
• a central opening lever, said lever being in abutment on the pawl and able to move said pawl in its retracted angular position,
• an actuator intended to occupy three stop positions and capable of cooperating with the central opening lever, said actuator comprising:
  • a trainer comprising a driving toothed wheel and a coaxial driven wheel, the driving toothed wheel being able to drive in rotation of the driven wheel by means of a first drive member and said driven wheel comprising a second drive member,
  • a motor designed to drive said driving gear wheel in rotation by means of a worm screw,
  • A central transfer lever capable of being moved in translation by the driven wheel of the coach by means of the second drive member and the movement of which is capable of being transmitted to the central opening lever to move the pawl in its angular position retracted,
  • such that one of the wheels of the coach has a first oblong light in the shape of an arc of a circle and the other wheel has a first drive member extending through said first light, the coach being able to rotate one wheel without rotating the other wheel.

Preferably, the lock according to the invention is such that the first drive member is a crank pin belonging to the driven wheel and extending perpendicularly to one of the two main faces of the wheel driven through the first oblong slot of the driving toothed wheel, said crank pin being radially eccentric and the slot oblong allowing a rotary vacuum stroke of the driving toothed wheel before driving the driven wheel by pressing. This facilitates training and allows a complementarity of light / training element shape, avoiding radial play, especially when the crankpin has the same diameter as the width of the oblong slot.

Still preferably, the lock according to the invention is such that the second drive member of the driven wheel is a crank pin extending perpendicularly through a recess of complementary shape of the central transfer lever to move said central lever by pressing transfer, said pin being radially eccentric. This facilitates the training of the central transfer lever and the more the eccentricity is pushed the more the necessary stroke is reduced in order to move the central transfer lever sufficiently.

Ideally, the lock according to the invention further comprises a housing in which the driver is located and on which is fixed a stop means equipped of two stops, and in that one of the wheels of the coach comprises an axial projection of the stop capable of moving in rotation between the two stops between two positions called first and third stop positions. The seal allows the lock to be isolated from any dust or liquid that can freeze and harm the mechanism. The stops make it possible to stop the rotation of the motor in a given position without using contactors.

Optionally, the lock according to the invention comprises an interface assembly able to cooperate with the central opening lever so as to move the pawl in its retracted angular position and comprising a release lever able to pivot around its axis to move the pawl between an angular position for retaining the bolt and a retracted strike release position, said release lever comprising a connecting means capable of receiving means for moving the release lever of the cable or rod type.

This gives a new functionality to the lock making it possible to move the pawl by a means other than the central transfer lever. In addition, this opens the possibility of carrying out a child safety setting by disengaging the release lever and vice versa.

Preferably, the lock according to the invention is such that: the central transfer lever is able to move by translation in a plane perpendicular to the axis, said lever comprising a second oblong opening extending in the direction of translation of the lever central transfer, the release lever comprises a third oblong opening extending in the direction of translation of the central transfer lever, said lock further comprises an intermediate clutch / release lever between the central transfer lever and the release, said intermediate lever comprising two protrusions extending substantially perpendicular to the plane of the lever, the first protrusion extending through the second oblong lumen and the second protrusion extending through the third oblong lumen, the lever central opening has a contact protuberance capable of being brought into abutment by the second protrusion extending projecting through the third oblong lumen,

so that the translational movement of the central transfer lever is able to move the second protuberance of the intermediate lever between a position where said surface is incapable of rotating the central opening lever and a position where the rotation of the lever release by said displacement means causes the displacement of the central opening lever by abutment contact with the contact projection of the central opening lever.

This improves the new functionality of the lock allowing the pawl to be moved by a means other than the central transfer lever.

In addition, this opens the possibility of carrying out a child safety setting by disengaging the release lever and vice versa. In addition, the possibility of declutching saves on an inertial system.

Ideally, the central transfer lever further comprises an elastic return means of the intermediate lever bearing on the first protuberance, said elastic means being capable of returning the intermediate lever to its initial position of non-solicitation in displacement by the central transfer lever . This resets the actuator mechanically once this function is used.

An improvement of the invention is obtained when the pawl of the lock according to the invention comprises two radial protrusions extending on two distinct planes and perpendicular to the axis of rotation of the pawl, the first protuberance having a surface capable of being driven by the central opening lever and the second protuberance having a surface capable of cooperating in abutment with a notch of the bolt so as to retain the bolt in the strike release position. This allows a gain in compactness because the two arms of the pawl being on two different planes, one can have the central opening lever and the bolt opposite and on two parallel planes.

• Elle comprend un levier mémoire possédant 2 bras antagonistes ledit levier mémoire étant apte à pivoter autour de son axe,
• le levier central de transfert comprend un mur d'arrêt apte à s'interfacer avec un premier bras du levier mémoire, ledit levier mémoire étant apte à pivoter entre :
  • une position angulaire dans laquelle le premier bras vient en contact de butée avec une surface active du mur d'arrêt pour bloquer le levier central de transfert dans la position de déplacement du cliquet dans sa position angulaire escamotée,
  • et une position angulaire effacée par rapport à la course du levier central de transfert dans laquelle le premier bras du levier mémoire est hors du mur d'arrêt pour permettre le retour du cliquet dans sa position angulaire de verrouillage.

In a preferred embodiment of the invention, the lock according to the invention is such that:

• It includes a memory lever having 2 opposing arms, said memory lever being able to pivot about its axis,
• the central transfer lever comprises a stop wall capable of interfacing with a first arm of the memory lever, said memory lever being able to pivot between:
  • an angular position in which the first arm comes into abutment contact with an active surface of the stop wall to block the central transfer lever in the position of movement of the pawl in its retracted angular position,
  • and an angular position erased relative to the stroke of the central transfer lever in which the first arm of the memory lever is outside the stop wall to allow the pawl to return to its angular locking position.

This adds to the invention the possibility of immobilizing the pawl in its bolt release position, while allowing, due to the oblong light of the actuator linked to the motor, a return to the intermediate position of the actuator. The actuator is reset and a new stroke is possible by turning the motor in the other direction.

Preferably, the lock according to the invention is such that it comprises an elastic return means of the memory lever capable of returning the memory lever to its angular position for blocking the central transfer lever.

• une position dans laquelle il maintient le levier mémoire dans sa position angulaire de blocage du levier central de transfert dans la position de déplacement du cliquet dans sa position angulaire escamotée, et une position dans laquelle il permet un retour du levier mémoire dans sa position angulaire effacée par rapport à la course du levier central de transfert,
• un moyen de rappel élastique du cliquet de levier mémoire apte à rappeler le cliquet de levier mémoire vers sa position de maintien du levier mémoire dans sa position angulaire de blocage du levier central de transfert
• un palpeur de pêne apte à pivoter autour du même axe que le pêne, le palpeur de pêne, et le pêne étant solidaires en rotation,
• des surfaces radiales appartenant respectivement au cliquet du levier mémoire et au palpeur de pêne et une extrémité du levier mémoire telles que l'extrémité du levier mémoire est apte à reposer successivement sur les surfaces radiales lorsque le pêne est entrainé en rotation vers sa position angulaire de libération de gâche.

An improvement of the invention is obtained when the lock comprises: a ratchet of memory lever able to pivot around the same axis as the bolt between:

• a position in which it maintains the memory lever in its angular position of blocking of the central transfer lever in the position of displacement of the pawl in its angular retracted position, and a position in which it allows a return of the memory lever in its erased angular position relative to the stroke of the central transfer lever,
• an elastic return means of the memory lever pawl capable of returning the memory lever pawl to its position for holding the memory lever in its angular position for blocking the central transfer lever
• a latch feeler capable of pivoting about the same axis as the latch, the latch feeler and the latch being integral in rotation,
• radial surfaces belonging respectively to the ratchet of the memory lever and to the bolt feeler and one end of the memory lever such that the end of the memory lever is able to rest successively on the radial surfaces when the bolt is rotated towards its angular position of door release.

This allows the central transfer lever to be locked in the ratchet movement position in its retracted angular position via a locking of the memory lever, in addition the continuity of the surfaces makes it possible to remain in the locked position even during the door closing process during which the bolt turns so as to trap a strike.

Ideally, the lock according to the invention is such that the latch feeler has a notch of complementary shape at the end of the memory lever in order to maintain the memory lever in its angular position erased relative to the stroke of the central transfer lever.

Preferably, the actuator is able to occupy three stop positions:

the first stop position being defined by the contact of the axial stop protuberance on one of the stops when the motor rotates in one direction,

the second abutment position being an intermediate position of the axial abutment projection on a abutment of the first oblong slot when the motor turns in the other direction,

the third stop position being defined by the contact of the axial stop projection on the other stop.

This allows optimal use of the three stop positions of the lock according to the invention.

In order to gain compactness, preferably, the axes of rotation of the bolt, the pawl, the release lever, and the memory lever are all parallel with respect to each other.

Preferably, the radius of the memory lever pawl is greater than that of the latch feeler.

Ideally, the lock according to the invention comprises a single motor. This makes it possible to carry out numerous functionalities with a single power supply, thus representing a gain in terms of assembly and an optimization of the engine and a simplification of the kinematics.

• Les figures 1a à 1d sont des vues selon plusieurs angles de la serrure selon l'invention en position d'emprisonnement de gâche (non représentée) ;
• La figure 2 est une vue en perspective de la serrure de l'invention ;
• Les figures 3a à 3c sont des vues en perspectives de l'entraîneur selon l'invention illustrant la roue entraînante et la roue entraînée ;
• La figure 3d est une vue en perspective de la roue entraînée selon l'invention ;
• La figure 3e est une vue en perspective de la partie non dentée de la roue entraînante selon l'invention ;
• La figure 4 est une vue en plan avant de l'entraîneur de l'invention avec les butées et le levier central de transfert ;
• La figure 5 est une vue analogue à la figure 4 en plan arrière illustrant la lumière en forme d'arc de cercle ;
• La figure 6 est une vue en plan du cliquet et du pêne selon l'invention en position d'emprisonnement de gâche ;
• La figure 7 est une vue en plan de l'actionneur de la serrure selon l'invention où le levier mémoire est position angulaire effacée par rapport à la course du levier central de transfert ;
• La figure 8 est une vue en plan du levier central d'ouverture et du levier intermédiaire en position débrayée ;
• Les figures 9 et 10 sont des vues en perspectives respectivement avant et arrière de la serrure selon l'invention ;
• La figure 11 illustre la cinématique de l'actionneur de la serrure selon l'invention lors d'une ouverture électrique vers une première position de butée de l'actionneur ;
• La figure 12 illustre la cinématique de l'actionneur de la serrure selon l'invention lors d'un retour de la roue dentée entraînante en position initiale ;
• Les figures 13 et 14 illustrent successivement les cinématiques du cliquet du levier mémoire et du palpeur de pêne selon l'invention vers une libération de gâche ;
• La figure 15 est une vue en plan analogue à la figure 14 centrée sur le levier mémoire, le cliquet du levier mémoire et le palpeur de pêne ;
• La figure 16 est une vue en plan de la cinématique de la serrure selon l'invention lors du processus d'emprisonnement de gâche et mise du levier mémoire en position angulaire effacée ;
• La figure 16a est une vue analogue à la figure 16 centrée sur le levier mémoire, le cliquet du levier mémoire et le palpeur de pêne ;
• La figure 17 illustre la cinématique de retour du cliquet en position de verrouillage vers la position de butée intermédiaire de l'actionneur;
• Les figures 18 et 19 illustrent successivement les cinématiques de la seconde fonction de la serrure selon l'invention, l'actionneur allant vers la troisième position de butée ;
• Les figures 20a et 20b illustrent le levier intermédiaire d'embrayage/débrayage dans lesdites positions respectivement débrayée et embrayée ;
• La figure 21 est une vue en plan de la serrure selon l'invention en position embrayée du levier intermédiaire d'embrayage/débrayage à la troisième position de butée ;
• La figure 22 est un vue en plan du levier mémoire en position maintenue effacée par rapport à la course du levier central de transfert ;
• La figure 23 illustre toutes les fonctions possibles grâce à la serrure selon l'invention ;
• Sur toutes les figures 1 à 23, les éléments identiques portent les mêmes numéros de référence.

Other advantages and characteristics will appear on reading the description of the invention given by way of example below, as well as in the appended figures in which:

• The Figures 1a to 1d are views from several angles of the lock according to the invention in the striker imprisonment position (not shown);
• The figure 2 is a perspective view of the lock of the invention;
• The figures 3a to 3c are perspective views of the coach according to the invention illustrating the driving wheel and the driven wheel;
• The 3d figure is a perspective view of the driven wheel according to the invention;
• The figure 3e is a perspective view of the non-toothed part of the driving wheel according to the invention;
• The figure 4 is a front plan view of the coach of the invention with the stops and the central transfer lever;
• The figure 5 is a view analogous to the figure 4 in the back showing the light in the shape of an arc of a circle;
• The figure 6 is a plan view of the pawl and the bolt according to the invention in the striker imprisonment position;
• The figure 7 is a plan view of the actuator of the lock according to the invention where the memory lever is angular position erased relative to the stroke of the central transfer lever;
• The figure 8 is a plan view of the central opening lever and the intermediate lever in the disengaged position;
• The Figures 9 and 10 are perspective views respectively front and rear of the lock according to the invention;
• The figure 11 illustrates the kinematics of the actuator of the lock according to the invention during an electric opening towards a first stop position of the actuator;
• The figure 12 illustrates the kinematics of the lock actuator according to the invention when the driving toothed wheel returns to the initial position;
• The Figures 13 and 14 successively illustrate the kinematics of the ratchet of the memory lever and of the bolt feeler according to the invention towards a release of a strike;
• The figure 15 is a plan view similar to the figure 14 centered on the memory lever, the ratchet of the memory lever and the latch feeler;
• The figure 16 is a plan view of the kinematics of the lock according to the invention during the stripping imprisonment process and placing the memory lever in the erased angular position;
• The figure 16a is a view analogous to the figure 16 centered on the memory lever, the ratchet of the memory lever and the latch feeler;
• The figure 17 illustrates the kinematics of return of the pawl in the locked position towards the intermediate stop position of the actuator;
• The Figures 18 and 19 successively illustrate the kinematics of the second function of the lock according to the invention, the actuator going towards the third stop position;
• The figures 20a and 20b illustrate the intermediate clutch / disengage lever in said positions respectively disengaged and engaged;
• The figure 21 is a plan view of the lock according to the invention in the engaged position of the intermediate clutch / disengage lever in the third stop position;
• The figure 22 is a plan view of the memory lever in the position held erased relative to the travel of the central transfer lever;
• The figure 23 illustrates all the possible functions thanks to the lock according to the invention;
• On all Figures 1 to 23 , identical items have the same reference numbers.

We will now through the following lines describe the different elements of the lock according to the invention through a non-limiting example in terms of scope of the invention.

The Figures 1a to 1d represent different elements of the same electric lock according to the invention for a motor vehicle opening from different angles of view.

In these figures, the electric lock S comprises a pivoting bolt 10 intended to cooperate with a keeper (not shown) and not forming in itself part of the invention. The bolt 10 preferably has the form of a fork delimiting a notch 20 capable of receiving a keeper 19. In the closed position of the lock S, the bolt 10 is locked in rotation by a pivoting pawl 9, preventing the bolt 10 from rotating. The pawl 9 is integral in rotation with a central opening lever 7, the pivoting of which is driven by an actuator A1 for opening the lock. It should be noted that, in the lock according to the invention, the pawl 9 is preferably associated with a spring-type return means 9s (not shown) for returning the pawl 9 to the angular locking position.

In addition, the bolt 10 is able to rotate about an axis of rotation R1 parallel to the axis of rotation R2 of the pawl 9. The central opening lever 7 is also able to rotate around an axis of rotation R3 parallel to R1 and R2. This improves the compactness of the lock according to the invention. This compactness is improved by the possibility of assembling the parts on different planes thanks to the pawl 9 having two radial protuberances 91 and 92 extending on two distinct planes and perpendicular to the axis R2 of rotation of the pawl 9, the first protuberance 91 having a surface capable of being driven by the central opening lever 7 and the second protuberance 92 having a surface capable of cooperating in abutment with the bolt 10 so as to retain the bolt 10 in an angular position for locking the keeper (not shown) and not part of the invention).

The driver E of the lock according to the invention is rotated by a motor assembly 1 and worm screw 3 known per se. The motor is capable of turning the auger in the two possible directions of rotation. The rotation of the endless screw is such as to rotate the driving toothed wheel 2. Which wheel is able to rotate the driven wheel 5 which comprises the crank pins 5c and 5b. The crank pin 5b in rotation is able to move in translation the central transfer lever and the crank pin 5c diametrically opposite to the crank pin 5b on the same face of the driven wheel 5 is able to move angularly between two stops being in a means of stop 18 fixed to the lock housing according to the invention.

The lock according to the invention illustrated in the Figures 1a to 1d also shows an interface assembly A2 able to cooperate with the central opening lever 7 so as to move the pawl 9 in its retracted angular position. The interface assembly A2 is defined by the cable (or rod) associated with the release lever. This interface lever A2 allows a connection with a cable or a rod themselves in connection with an interior or exterior handle. Associated with the interface assembly, there is an elastic return means 7s of the central opening lever 7, one end of which 7s1 rests on said finger 151 of the release lever 15 so as to return said release lever 15 to its position initial after movement of the pawl 9 in its retracted position. The Figures 1b, 1c and 1d show a release lever 15 able to pivot around its axis R3 ( fig. 1a ) to move the pawl 9 between an angular position for retaining the bolt 10 and a retracted position for release of the keeper (not shown) and comprising a finger 151, said release lever 15 comprising a connecting means 152 capable of receiving a means of displacement 21 of the release lever 15 of cable or rod type.

It should be noted that the connecting means 152 can be connected to an interior door handle or an exterior handle. The two handles can be at the front or rear of a vehicle.

We can distinguish figure 1b an elastic return means 7s of the central opening lever 7, one end of which 7s1 ( fig. 1d ) rests on a finger 151 of the release lever 15 in the rest position so as to return said release lever 15 to its initial position after movement of the pawl 9 in its retracted position.

The Figures 1c and 1d illustrate the lock S according to the invention and show an intermediate clutch / release lever 14 which is located between the central transfer lever 6 and the release lever 15. This intermediate lever 14 has two protuberances 141 ( fig. 1a ) and 142 ( fig. 1d ) which extend perpendicularly to the plane of the lever 14 which is the plane of the Figures 1c and 1d .

Referring to the figure 2 , the first protrusion 141 extends through an oblong opening 61 belonging to the central transfer lever 6 and the second protrusion 142 ( fig. 1d and 1b ) protrudes through an oblong opening 153 belonging to the release lever 15.

In this same figure 2 , there is a spring 14s of the intermediate lever 14 bearing on either side of the first protrusion 141, the spring 14s is capable of returning the intermediate lever 14 to its initial position of non-solicitation in displacement by the central transfer lever 6. Indeed, since the two tabs 14s1 and 14s2 are in abutment on both sides of the projection 14 of the intermediate lever 14, following a displacement, the intermediate lever 14 undergoes a restoring force towards its initial position.

Also on the figure 2 , we see the constituent elements of the stop means 18. This stop means comprises two stops 16 and 17 between which the crank pin 5c of the driven wheel 5 can move.

The figures 3a to 3c show the driver E of the lock according to the invention. It should be noted that the driving toothed wheel 2 can be made in one piece comprising on the periphery the teeth and inside a first oblong opening 41 in the form of an arc of a circle or else in several pieces, the second piece 4 comprising the first oblong light 41 in the shape of an arc of a circle ( fig. 3c ). In one piece, you save time during assembly, a process step, in several pieces, you can add sub-functions.

The driven wheel 5 illustrated in the figure 3b is driven in rotation by the driving toothed wheel 2, it comprises a crank pin 5a which extends through the first lumen 41 of the driving toothed wheel 2, the driving wheel 2 is capable of performing a phase shift rotation with the driven wheel 5 We see at the figure 3b the two crank pins 5b and 5c respectively serving to move (5b) the central transfer lever 6 and stop (5c) able to move in rotation between the two stops 16,17 to define the first and third stop positions of the lock according to the invention.

The figure 3c shows the end of the crank pin 5a extending perpendicularly on the face opposite to those of the crank pins 5b and 5c of the driven wheel 5. The first face being visible on the figure 2b and the second to al 3d figure .

This same 3d figure illustrates the side F2 of the driven wheel 5, the side F1 appearing in the figure 3b . We see the crank pin 5a and the crank pin 5c being in diametrically opposite directions. The extension of the crankpin is done through the oblong opening in the form of an arc of a circle 41 of the disc 4 which can be merged with the driven toothed wheel 2 so as to form only one piece.

The figure 4 makes it possible to more clearly distinguish the stops 16 and 17 of the stop means 18 which can be fixed to the housing of the lock according to the invention. We also see the crank pin 5c able to move between the stops 16 and 17, thus defining the movement of the central transfer lever 6 which is integral with the crank pin 5b belonging to the driven wheel 5.

A clockwise or counterclockwise rotation of the driven wheel figure 4 would therefore lower the central transfer lever 6 and a counterclockwise rotation would raise it. The two rotations in opposite directions taking place within the limits imposed by the stops 16 and 17. This defines the first and third stable stop positions. In the figure, the intermediate position is the second stable stop position.

The figure 5 shows the same view as the figure 4 but on the other side. There are the endless screw 3 which rotates the driving toothed wheel 2 as well as the oblong slot in the form of an arc of a circle 41.

The figure 6 shows a bolt 10 having the shape of a fork delimiting a notch 20 adapted to receive a strike 19. There is also a pawl 9 capable of cooperating in abutment with a notch 101 or 102 of the bolt 10 so as to retain the bolt 10 in position d lock keep 19 in the notch 20.

To the figure 7 , is clearly seen a memory lever 11 able to pivot around its axis R4 (cf. fig. 1a ) between an angular position in which the memory lever comes into abutment contact with an active surface of the central transfer lever 6 to lock the latter in the position of movement of the pawl 9 in the retracted angular position, and an angular position erased relative to the stroke of the central transfer lever 6 to allow the pawl 9 to return to its angular locking position when the central transfer lever 6 returns to its initial position.

At this same figure 7 appears a pawl of the memory lever 12 adapted to pivot around its axis R5 ideally slightly offset relative to the axis of R1 between a position in which it maintains the memory lever 11 in its angular position of blocking of the central transfer lever 6 in the position of displacement of the pawl 9 in retracted angular position, and a position in which it allows a return of the memory lever 11 in its angular position erased with respect to the stroke of the central transfer lever 6.

The lock according to the invention also comprises a bolt feeler 13 able to pivot around the same axis R1 as the bolt 10. The bolt feeler 13, and the bolt 10 are integral in rotation. A notch 132 is provided inside the bolt feeler 13 in order to be able to allow a complete rotation of the bolt without interfering with the memory lever 11 in the erased position in the case of a mechanical opening of the lock 1.

The figure 8 illustrates the interface assembly A2 of the lock according to the invention (cf. also fig. 1a-1d ). To the figure 8 , we see a central opening lever 7 which includes a contact protrusion 71 capable of being driven into abutment by the second protrusion 142 of the intermediate clutch / declutch lever 14 projecting through the third oblong light 153 ( fig. 7 ), so that the translational movement of the central transfer lever 6 is able to move the second protuberance 142 of the intermediate lever 14 between a position where said surface 142 is incapable of rotating the central opening lever 7 and a position where the rotation of the release lever 15 by said displacement means 21 ( fig. 1 C and 7 ) causes the central opening lever 7 to move by abutment contact with the contact projection 71 of the central opening lever 7. This point is illustrated in more detail in figures 20a and 20b where we see the link clutch.

The Figures 9 and 10 both illustrate the lock according to the invention by concealing the interface assembly for the sake of clarity. In these figures, it can be seen that this example of the lock according to the invention has a memory lever 11 having 2 opposing arms 111 and 112. The memory lever 11 is able to pivot around its axis R4 (cf. fig. 1a ) and it can be associated with a spring-type return means 11s which returns it to its angular position for blocking the central transfer lever 6 in the position of movement of the pawl 9 in the retracted angular position.

To the figure 9 , the central transfer lever 6 comprises a stop wall 62 capable of receiving a first arm 111 of the memory lever 11. The memory lever 11 is able to pivot between an angular position in which the first arm 111 comes into abutment contact with an active surface of the stop wall 62 for blocking the central transfer lever 6 in the position of movement of the pawl 9 in its angular retracted position, and an angular position erased with respect to the stroke of the central transfer lever 6 in which the first arm 111 of the memory lever 11 is outside the stop wall 62 to allow the pawl 9 to return to its angular locking position.

The 11s spring is optional. It can simply be envisaged that the barrier wall 62 has a ramp of complementary shape at the end of the first arm 111 and of such a nature as to cause a sliding towards the angular position erased with respect to the stroke of the central transfer lever 6.

The figure 10 shows an end 112a capable of being trapped in a complementary notch 132 (cf. fig. 7 ) provided inside the probe bolt 13 in order to allow a complete rotation of the bolt without interfering with the memory lever 11 in the erased position in the case of a mechanical opening of the lock 1. This is illustrated in the figure 22 .

To the figure 10 , the first projection 141 of the intermediate clutch / release lever 14 which clearly extends through the oblong opening 61 belonging to the central transfer lever 6 is clearly distinguished.

The Figures 11 to 19 describe kinematics which will be detailed in the second part of the description of this example of a multifunctional lock according to the invention.

The figures 20a and 20b illustrate the interface assembly A2 of the lock according to the invention (cf. also fig. 8 ). The central opening lever 7 has a contact protrusion 71 capable of being brought into abutment by the second protrusion 142 of the intermediate clutch / disengage lever 14 (not shown) extending projecting through the third oblong slot 153 not shown here but at the fig. 7

This is done so that the translational movement of the central transfer lever 6 (not shown) is able to move the second protrusion 142 of the intermediate lever 14 between a position where said surface 142 is unable to rotate the central lever opening 7 illustrated in fig. 20a , and a position where the rotation of the release lever 15 by said displacement means 21 (not shown here but at fig. 1 C and 7 ) causes the central opening lever 7 to move by abutment contact with the contact protrusion 71 illustrated in the fig. 20b .

The figure 21 shows the positioning of the driver E with the driving toothed wheel 2 and the driven wheel 5. It also shows the actuator A1 and the interface lever 15 in the second intermediate stop position when the central transfer lever 6 has been reassembled by coach E.

It is important to note that this example is not limiting since the lock according to the invention, in the embodiment with the memory lever 11, makes it possible to adopt three positions, the intermediate one of which is a new start, ie again towards the first stop. either towards the second stop offering in fact two functionalities.

Thus, in the intermediate stop state, two functionalities are available, depending on whether the motor turns in one direction or the other. In this case, the two functions that have been chosen are the electric opening (function F +) and mechanical unlocking via a cable / rod - external or internal - linked to the release lever 15 (function F-). In addition, the table of the figure 23 indicates all the options available with the lock according to the invention.

In the lock according to the invention, each time that the function F + is used, in this case the electric opening, the function F-, in this case the mechanical unlocking of the opening via a cable is reset. The return of the memory lever 11 in the angular position erased relative to the stroke of the central transfer lever 6 is obtained when the keeper engages in the bolt when closing the opening comprising the lock according to the invention. We are talking about a "reset" function.

In the following description, reference is made to Figures 11 to 19 .

The Figures 11 and 12 illustrate the kinematics of this motorized opening until the stop and blocking of the central transfer lever in the blocking position of the central transfer lever 6 in the position of movement of the pawl 9 in its retracted angular position. In this case, the F + function is the electric opening. At each stage, the coach is shown on both sides as well as A1 and A2. The arrows show the displacements generated.

So at the figure 11 from left to right, the motor 1 actuates the driving toothed wheel 2 through an endless screw 3. The driving toothed wheel 2 rotates the driven wheel 5 and therefore the crank pin 5b. The latter causes, without any play, a translation of the central transfer lever 6. The translation rotates the central opening lever 7 and transmits the movement to the radial projection 91 of the pawl 9 by reversing its direction. We can also speak of an inverter for the central opening lever 7. We thus obtain a rotation of the pawl towards a strike release position 19 (not shown),

When the translation of the central transfer lever 6 reaches an activation stroke which is that allowing the memory lever 11 to be inserted in the stop wall 62 ( fig. 9 ) under the effect of the return spring 11s. This state stable is maintained by the ratchet of the memory lever 12 which prevents any rotation of return of the memory lever 11. The ratchet 12 of the memory lever 11 moves thanks to its own return spring 12s which recalls it towards its position of holding the memory lever 11 in its angular position for locking the central transfer lever 6. This stop position on the stop 16 is the first stable stop position.

At the kinematics of the figure 12 , from left to right, the crank pin 5c is first stopped on a stop 16 mounted in a stop means 18. After a determined time delay or given sensor information, the actuator, and therefore the motor, is powered in reverse. The central transfer lever 6 cannot return to its initial high position because it is blocked by memory lever 11. The crank pin 5a is also blocked by the absence of possibility of rotation of the driven wheel secured to the central transfer lever 6 However, due to the oblong light in the shape of an arc of a circle 41, the driving toothed wheel 2 continues to rotate, and will subsequently stop on the opposite side of the light where the crank pin 5a was at the start of the figure 11 .

It is now possible to release a keeper 19 (not shown) trapped by the bolt 10 since the pawl 9 is stabilized in the retracted position and therefore erased relative to a rotation of the bolt 10.

The bolt can now pivot under the effect of its own return spring 10s or under the effect of the strike when the door is pulled. It can also remain in its door lock position if the seal reaction is negative, for example when the car is parked at a determined angle or if the door seals are frozen.

The sequence which will be detailed below describes the kinematics when the rotation of the bolt is delayed by one of the above phenomena. It would have been identical if the bolt 10 was driven in opening as soon as the electric opening was effective, at the end of the sequence of the figure 11 .

Following successively and from left to right the figures 13, 14 and 15 , it can be seen that the pawl 12 of the memory lever 11 prevents the memory lever 11 from leaving the angular position of blocking of the central lever of transfer 6, and this, throughout the duration of rotation of the bolt 10 to the position of total release of the striker 19 (not shown). The radial surfaces 121 and 131 belonging respectively to the pawl 12 of the memory lever 11 and to the bolt feeler 13 serve successively as a bearing surface at the end 112a of the memory lever 11 when the bolt 10 is rotated towards its angular position of door release 19.

At the end of this kinematics visible at the fig. 14 , the memory lever 11 has remained in the angular locking position of the central transfer lever 6 and the pawl 9 is still maintained in the retracted angular position.

With reference to Figures 16 and 16a , when the bolt is rotated inward by a keeper 19 when the leaf is closed, the bolt feeler 13 rotates clockwise and the end 112a of the memory lever 11 prevents the pawl 12 of the lever memory to re-engage on the surface 121 of the pawl 12 ( fig. 16a ).

To obtain this effect, it is important that the radius of the memory lever pawl 12 is greater than that of the bolt feeler 13. The memory lever 11 is thus led to a rest position illustrated at the end of the kinematics of the figure 16 . This frees the translation of the central transfer lever 6 to its initial high position.

With reference to the figure 17 to be read from left to right, the crankpin (5b) returns to its initial position by return to the cascade spring from the central opening lever 7. The central opening lever 7 can also return to its initial position, during this stroke back from the central opening lever 7 the pawl returns to its angular position for retaining the bolt 10.

During this kinematics of the figure 17 , the crank pin (5a) returns to the other end of the oblong slot in the form of an arc of a circle 41, which corresponds exactly to the starting point of the actuator described. This position is stabilized and it finds itself in the second stable intermediate stop position.

At this stage, the central opening lever 7 is free to return to its angular position in which the pawl is able to cooperate in abutment with a notch 101 or 102 of the bolt 10. Due to the pawl spring 9s (not shown), pawl 9 is returned to the angular position for retaining the bolt 10. The angular position of the keeper is locked in place and the electric opening function is again available as well as another type F function - which will be described in the kinematics of Figures 18 and 19 .

The lock according to the invention is thus in the intermediate stop state again. With reference to the figure 18 , the motor 1 rotates in the opposite direction to that of the first electric opening function and the worm 3 turns the driving wheel 2 and the crank pin 5a ends up being driven by stop of the oblong arc-shaped light of circle 41 in order to be able to drive the driven wheel 5. The crank pin 5b of the driven wheel 5 will move the central transfer lever 6 in translation upwards as illustrated at the end of the figure 19 .

Thus, the spring 14s integral in displacement with the central transfer lever 6 will drive with it in the same direction, by its lug 14s1, the intermediate clutch / disengage lever 14. This kinematics ends when the crank pin 5c abuts on the stop 17. This is the third stable abutment position of the lock according to the invention.

At this stage, the intermediate clutch / disengage lever 14 has been moved from a disengaged position to a clutch position (cf. fig 20 a 20b). The axial projection 142 of the intermediate clutch / release lever 14 can now drive the central opening lever 7 by its contact projection 71.

A mechanical opening operation by pulling on a handle linked to the interface assembly A2 will have no mechanical effect on the central transfer lever 6.

Following opening of the leaf and therefore rotation of the bolt 10, when a strike is reset, the memory lever 11 has remained in the erased position relative to the path of the central transfer lever 6. The latter is in the stable stop position high and therefore the keeper is trapped but a mechanical release (function F-) is always possible since the intermediate clutch / release lever 14 is in the engaged position. ( fig. 20b ).

The solution described in this example therefore comprises an electric opening (function F +) as well as a release lever 15 connected to a mechanical unlockable means of engagement (function F-). Note that this makes it possible to do without an inertial system. Indeed, an acceleration created by a shock will not generate an untimely opening by driving the handle.

However, it is possible to engage the exterior handle during a collision (function F-) so that access to the interior from outside - or vice versa or both - of the car is mechanically possible after a possible accident or shock.

It is also possible to add another clutch / disengageable lever similar to the interface lever 15 and connect the latter to the interior handle.

Claims (16)

1. An electric latch (S) for a door leaf of a motor vehicle comprising:

   - a bolt (10) capable of pivoting about its axis (R1) between an angular position for locking up a strike (19) and a position for releasing the strike (19),

   - a pawl (9) capable of pivoting about its axis (R2) between an angular locking position in which the pawl (9) is likely to cooperate in abutment with a notch (101, 102) of the bolt (10) so as to retain said bolt (10) in a position for locked up the strike (19) and a retracted angular position in which the bolt (10) is freely rotatable about its axis (R1),

   - a central opening lever (7), said lever being bearing on the pawl (9) and capable of displacing said pawl (9) into its retracted angular position,

   - an actuator (A1) intended to occupy three abutment positions and capable of cooperating with the central opening lever (7), said actuator including:

   - a driver (E) including a driving toothed wheel (2) and a coaxial driven wheel (5), the driving toothed wheel (2) being capable of rotatably driving the driven wheel (5) by means of a first drive member (5a) and said driven wheel (5) including a second drive member (5b),

   - a motor (1) provided for rotatably driving said driving toothed wheel (2) of the driver (E) by means of a worm screw (3),

   - a central transfer lever (6) capable of being displaced in translation by the driven wheel (5) of the driver (E) by means of the second drive member (5b) and whose movement is capable of being transmitted to the central opening lever (7) to displace the pawl (9) to its retracted angular position, such as one of the wheels (2,5) of the driver (E) includes a first oblong aperture (41) in the shape of an arc of a circle and the other wheel (2,5) includes the first drive member (5a) extending through said first aperture (41), the driver (E) being capable of performing a rotary stroke of a wheel (2,5) without rotatably driving the other wheel (2,5).
2. The electric latch (S) according to claim 1 characterized in that the first drive member (5a) is a crank-pin belonging to the driven wheel (5) and extending perpendicularly with respect to one of the two main faces (F1, F2) of the driven wheel (5) through the first oblong aperture (41) of the driving toothed wheel (2), said crank-pin (5a) being radially eccentric and the oblong aperture allowing an idle rotary stroke of the driving toothed wheel (2) before driving by bearing the driven wheel (5).
3. The electric latch (S) according to any of the preceding claims characterized in that the second drive member (5b) of the driven wheel (5) is a crank-pin extending perpendicularly through a recess of a shape complementary to the central transfer lever (6) to displace by bearing said central transfer lever (6), said crank-pin (5b) being radially eccentric.
4. The electric latch (S) according to any one of the preceding claims characterized in that it further comprises a case in which the driver (E) is located and on which a stop means (18) equipped with two abutments (16,17) is fixed, and in that one of the wheels (2,5) of the driver (E) includes an axial abutment protuberance (5c) capable of moving in rotation between the two abutments (16,17) between two positions called first and third abutment positions.
5. The electric latch (S) according to any one of the preceding claims characterized in that it comprises an interface assembly (A2) capable of cooperating with the central opening lever (7) so as to displace the pawl (9) into its retracted angular position and including a release lever (15) capable of pivoting about its axis (R3) to displace the pawl between an angular position for retaining the bolt (10) and a retracted position for releasing the strike (19), said release lever (15) including connecting means (152) capable of receiving a displacement means (21) of the release lever (15) of the cable or rod type.
6. The electric latch (S) according to claim 5, characterized in that:

   - the central transfer lever (6) is capable of displacing by translation in a plane perpendicular to the axis (R3), said lever (6) comprising a second oblong aperture (61) extending in the direction of translation of the central transfer lever (6),

   - the release lever (15) comprises a third oblong aperture (153) extending in the direction of translation of the central transfer lever (6),

   - said latch (S) further comprises an intermediate start/stop lever (14) between the central transfer lever (6) and the release lever (15), said intermediate lever (14) including two protuberances (141, 142) extending substantially perpendicularly with respect to the plane of the lever (14), the first protuberance (141) extending through the second oblong aperture (61) and the second protuberance (142) extending in projection through the third oblong aperture (153),

   - the central opening lever (7) includes a contact protuberance (71) capable of being driven in abutment by the second protuberance (142) extending in projection through the third oblong aperture (153) so that the displacement in translation of the central transfer lever (6) is capable of displacing the second protuberance (142) of the intermediate lever (14) between a position where said surface (142) is unfit to rotatably drive the central opening lever (7) and a position where the rotation of the release lever (15) by said displacement means (21) drives the displacement of the central opening lever (7) by contacting the abutment with the contact protuberance (71) of the central opening lever.
7. The electric latch (S) according to claim 6 characterized in that the central transfer lever (6) further comprises an elastic return means (14s) of the intermediate lever (14) bearing on the first protuberance (141), said elastic means (14s) being capable of returning the intermediate lever (14) to its unsolicited initial position in displacement by the central transfer lever (6).
8. The electric latch (S) according to any one of the preceding claims characterized in that the pawl (9) includes two radial protuberances (91, 92) extending over two planes distinct and perpendicular to the axis (R2) of rotation of the pawl (9), the first protuberance (91) having a surface capable of being driven by the central opening lever (7) and the second protuberance (92) having a surface capable of cooperating in abutment with a notch (101, 102) of the bolt (10) so as to retain the bolt (10) in a strike release position (19).
9. The electric latch (S) according to any one of the preceding claims, characterized in that it comprises:

   - a memory lever (11) having two antagonistic arms (111, 112), said memory lever (11) being capable of pivoting about its axis (R4),

   - the central transfer lever (6) comprising a stop wall (62) capable of interfacing with a first arm (111) of the memory lever (11),

   - said memory lever being capable of pivoting between an angular position in which the first arm (111) contacts an abutment with an active surface of the stop wall (62) to block the central transfer lever (6) in the displacement position of the pawl (9) in its retracted angular position, and an erased angular position with respect to the stroke of the central transfer lever (6) in which the first arm (111) of the memory lever (11) is outside the stop wall (62) to allow the pawl (9) to return to its angular locking position.
10. The electric latch (S) according to claim 9 characterized in that it comprises an elastic return means (11s) of the memory lever (11) capable of returning said memory lever (11) in its angular blocking position of the central transfer lever (6).
11. The electric latch (S) according to any one of claims 9 or 10, characterized in that it comprises:

    - a memory lever pawl (12) capable of pivoting about the same axis (R1) as the bolt (10) between: a position in which it holds the memory lever (11) in its angular blocking position of the central transfer lever (6) in the displacement position of the pawl (9) in its retracted angular position, and a position in which it allows the memory lever (11) to return to its erased angular position with respect to the stroke of the central transfer lever (6),

    - an elastic return means (12s) of the memory lever pawl (12) capable of returning the memory lever pawl (12) to its holding position of the memory lever (11) in its angular blocking position of the central transfer lever (6),

    - a bolt sensor (13) capable of pivoting about the same axis (R1) as the bolt (10), the bolt sensor (13), and the bolt (10) being secured in rotation,

    - radial surfaces (121, 131) respectively belonging to the memory lever pawl (12) and to the bolt sensor (13) and an end (112a) of the memory lever (11) such as the end (112a) of the memory lever (11) is capable of successively resting on the radial surfaces (121, 131) when the bolt (10) is driven in rotation to its angular position for releasing the strike (19).
12. The electric latch (S) according to claim 11 characterized in that the bolt sensor (13) includes a groove (132) of a shape complementary to the end (112a) of the memory lever (11).
13. The electric latch (S) according to any one of claims 9 to 12, characterized in that the actuator (E) is capable of occupying three abutment positions:

    - the first abutment position being defined by the contact of the axial abutment protuberance (5c) on one of the abutments (16, 17) when the motor turns in one direction,

    - the second abutment position being an intermediate position of the axial abutment protuberance (5c) on an abutment of the first oblong aperture (41) when the motor turns in the other direction,

    - the third abutment position being defined by the contact of the axial abutment protuberance (5c) on the other abutment (16, 17).
14. The electric latch (S) according to any one of claims 9 to 13 characterized in that the axes of rotation (R1) of the bolt (10), (R2) of the pawl (9), (R3) of the release lever (15), and (R4) of the memory lever (11) are all parallel with respect to each other.
15. The electric latch (S) according to any one of claims 11 to 14 characterized in that the radius of the memory lever pawl (12) is greater than that of the bolt sensor (13).
16. The electric latch (S) according to any one of the preceding claims characterized in that said latch (S) comprises one single and same motor (1).

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