(19)
(11) EP 1 084 323 B1

(12) EUROPEAN PATENT SPECIFICATION

(45) Mention of the grant of the patent:
15.01.2003 Bulletin 2003/03

(21) Application number: 99919442.6

(22) Date of filing: 06.05.1999
(51) International Patent Classification (IPC)7E05B 65/20
(86) International application number:
PCT/GB9901/411
(87) International publication number:
WO 9905/7397 (11.11.1999 Gazette 1999/45)

(54)

LATCH MECHANISM

VERRIEGELUNGSVORRICHTUNG

MECANISME DE VERROUILLAGE


(84) Designated Contracting States:
DE FR

(30) Priority: 06.05.1998 GB 9809640

(43) Date of publication of application:
21.03.2001 Bulletin 2001/12

(60) Divisional application:
02017999.0
02018000.6

(73) Proprietor: ArvinMeritor Light Vehicle Systems (UK) Ltd
Birmingham, West Midlands, B30 3BW (GB)

(72) Inventor:
  • KALSI, Gurbinder Singh
    Warley, West Midlands B68 0NF (GB)

(74) Representative: Jones, John Bryn et al
Withers & Rogers, Goldings House, 2 Hays Lane
London SE1 2HW
London SE1 2HW (GB)


(56) References cited: : 
DE-A- 19 530 726
US-A- 5 676 003
US-A- 5 309 745
   
       
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description


    [0001] The present invention relates to latch mechanisms for doors of vehicles.

    [0002] It is known to provide latch mechanisms on doors of vehicles to allow opening and closing of the door. Such latch mechanisms have various modes of operation eg

    a) Lock mode, wherein operation of an outside door handle does not open the latch mechanism

    b) Superlocked mode, when in operation of an outside or an inside release lever does not operate the latch mechanism.

    c) Child safety mode, wherein operation of an inside release lever does not open the latch mechanism, whether or not the latch mechanism is locked, and

    d) Release mode, wherein the latch mechanism is released via means other than operation of the inside or outside release levers.



    [0003] Each mode has alternate states eg locked/unlocked, superlocked/not superlocked, child safety on/off and release/not released.

    [0004] Typically each mode requires an individual mechanism to effect the alternative states, with operation of each mechanism being affected either manually or with an individual power actuator.

    [0005] In the case of a latch mechanism operated entirely by power actuators, such as DC motors, it is also necessary to be able to open a locked door which has the child safety feature on in an emergency situation when actuation of the power actuators is not possible, such as when the keys to the vehicle are not available.

    [0006] Examples of latch mechanisms are disclosed in US 5676003 (Ursel et al) and DE 19530726 A1 (Kiekert AG).

    [0007] Thus according to the present invention there is provided a latch mechanism including a housing, a pawl movably mounted in the housing to release the latch mechanism, at least one of an inside and outside lock link mounted so as to be moveable between a first position at which operation of an associated release means causes movement of the pawl to release the latch, and a second position at which operation of the associated release means does not cause movement of the pawl characterised in that the at least one lock link is mounted for movement with the pawl such that movement of the pawl is necessarily accompanied by movement of the link.

    [0008] Preferably movement of the at least one lock link between its first and second position is effected by a power actuator.

    [0009] According to a further aspect of the invention there is also provided a latch mechanism having a set of operating modes, each mode having alternate states, the set including at least one of a lock mode and, a super lock mode, and at least one of a child safety mode and a release mode, changing of the latch mechanism between alternate states of each of the at least two modes of the set being effected by a single power actuator.

    [0010] According to a further aspect of the invention there is provided a latch mechanism having a set of operating modes, each mode having alternate states, the set including a child safety mode and a release mode, changing of the latch mechanism between alternate states of each of the modes being effected by a single power actuator.

    [0011] According to a further aspect of the invention there is provided a vehicle including a first and second door, each door including respective first and second latch mechanisms, the first and second latch mechanisms being substantially the same, and being operable by respective first and second power actuators to give respective first and second sets of operating modes each mode having alternate states, control of the power actuators being different to provide for different first and second sets of operating modes.

    [0012] The invention will now be described by way of example only with reference to the accompanying drawings in which;

    Fig.1 is a latch mechanism according to the present invention in a super-locked condition;

    Fig.1a is an enlarged view of part of Fig.1;

    Fig.1b is a schematic view in the direction of arrow A of Fig.1;

    Fig.2 is the latch mechanism of Fig.1 in a locked position with child safety on;

    Fig.3 is the latch mechanism of Fig. I in an unlocked condition with the child safety on;

    Fig.4 is the latch mechanism of Fig.1 in a locked condition with the child safety off;

    Fig.5 is the latch mechanism of Fig. 1 in an unlocked position with the child safety off; and

    Fig.6 is a latch mechanism of Fig.1 in a release position.



    [0013] With reference to Figs 1-6 there is shown a latch mechanism 10 including a body 11 which supports various components of the latch mechanism 10 as indicated below.

    [0014] Latch mechanism 10 further includes a claw 12 pivotally mounted about axis 13 on the body 11. Claw 12 acts to secure an associated door (not shown) in a closed position via a striker pin 14 attached to the door aperture. Rotation of the claw 12 in an anticlockwise direction about axis 13 when viewing Fig. allows release of the striker pin 14, thus enabling opening of the associated door.

    [0015] The claw 12 is held in a closed position by a pawl 15, only part of which is shown in dotted profile in Fig.1 for clarity. Pawl 15 is pivotally mounted on body 11 and can rotate about axis 16. Claw 12 can be held in a first safety position (not shown) when pawl 15 engages first safety abutment 17.

    [0016] Pawl lifter 20 is generally flat and lies in a plane parallel to pawl 15, to which it is rotationally secured. When viewing Fig.1 pawl 15 is obscured by pawl lifter 20. Clearly, pawl lifter 20 also rotates about axis 16.

    [0017] Inside lock link 21 and outside lock link 22 are mounted for movement with the pawl, in this case they are each individually pivoted about respective axes 21a and 22a on pawl lifter 20. In this case inside lock link 21 and outside lock link 22 are identical and each have respective cam followers 21b and 22b and release abutments 21c and 22c. Inside lock link 21 and outside lock link 22 are each biased in a clockwise direction when viewing Fig. 1 such that the respective cam followers 21b and 22b contact cam 30.

    [0018] Cam 30 is capable of rotating independently from pawl lifter 20 about axis 16. Cam 30 has three lobes 31, 32 and 33 and two levers 34, and 35 shown diagrammatically for clarity. Lobes 31, 32, 33 and levers 34 and 35 are all rotationally fast with cam 30. Preferably cam 30 can at least be rotated to the various positions as described below by a power actuator (not shown) such as a DC motor or preferably a stepper motor.

    [0019] Outside release lever 40 is pivotedly mounted about axis 41. Inside release lever 43 (shown diagrammatically in Fig.lb) is pivotedly mounted about axis 44.

    [0020] Operation of a door latch mechanism is as follows.

    [0021] Fig. 1 shows the door latch mechanism in a super lock condition, that is to say operation of the outside release lever 40 or inside release lever 43 does not allow unlatching of the mechanism. In particular it can be seen that if outside release lever 40 were to be operated by being rotated in a clockwise direction about axis 41, abutment 42 would pass release abutment 22c of outside lock link 22 without contact (note that outside release lever 40 is in the same plane as outside lock link 22). Similarly inside release lever 43 when operated by being rotated in an anticlockwise direction about axis 44 when viewing Fig.1b, would cause abutment 45 to pass release abutment 21c of inside lock link 21 (see especially Fig.1).

    [0022] Fig.2 shows the door latch mechanism 10 in a locked position with the child safety feature on. It will be noted that cam 30 has been rotated 30 degrees in an anticlockwise direction when compared to Fig. 1. However, the inside lock link 21 and outside lock link 22 are in the same position when compared with Fig.1 since neither of the cam followers 21b or 22b have, at this stage, ridden up any of the lobes 31, 32 or 33 of the cam 30. However, lever 34 has been rotated to a position whereby operation of the inside release lever 43 in an anticlockwise direction when viewing Fig.1b would cause abutment 46 to contact lever 34 and rotate cam 30 to the position shown in Fig.3. Note this initial operation of inside release lever 43 does not unlatch the mechanism but only operates to unlock the door (see below). This method of being able to override and open a locked door which has the child safety on is especially important in an emergency situation whereby a passer-by can effect access to the inside door handle (eg by breaking the door window glass), operate the inside door handle to unlock the door, then operate the outside door handle to open the door and then remove the child from the car.

    [0023] Fig.3 shows the door latch mechanism 10 in an unlocked condition with the child safety feature on. In this case the cam 30 has been rotated sufficiently (either by operating the inside release lever when the cam was in the position shown in Fig.2 or by independent rotation of the cam directly eg by a power actuator) such that cam follower 22b has ridden up cam lobe 32 resulting in anticlockwise rotation of outside lock link 22. Thus when outside release lever 40 is operated, abutment 42 contacts release abutment 22c causing the pawl lifter 20 as a whole to rotate anticlockwise when viewing Fig.3 and releasing the pawl 15 and allowing the claw 12 to open. Stop 22d limits the anticlockwise rotation of outside lock link 22. Upon release of the outside release lever 40 the pawl lifter 20 is biased back to the position as shown in Fig.3 by a spring (not shown). It should also be noted that the inside lock link 21 is in the same position as that shown in Fig.1, thus operation of the inside release lever 43 does not allow opening of the door.

    [0024] Fig.4 shows the door latch mechanism 10 in a locked condition with the child safety feature off. It should be noted that the cam 30 has been rotated 90 degrees in an anticlockwise direction when compared with Fig.1. This results in cam follower 22b being situated between cam lobes 32 and 33 thus ensuring that operation of outside release lever 40 does not release the latch mechanism. Furthermore, the rotation of the cam 30 has caused cam follower 21b to ride up cam lobe 31 causing inside lock link 21 to rotate anticlockwise about axis 21a. Thus abutment 21c of inside lock link 21 is contacted by abutment 45 of inside release lever 43 when it is operated. This causes anticlockwise rotation of the pall lifter 20 about axis 16 resulting in unlatching of the door mechanism and allowing the door to be subsequently opened. Stop 21d limits the anticlockwise rotation of inside lock link 21. It should be noted that the operation of the inside release lever 43 also causes abutment 46 to contact lever 35 causing rotation of cam 30 to the position shown in Fig.5. This prevents a vehicle occupant inadvertedly locking himself out of the vehicle since opening of the door from the inside automatically unlocks the door, allowing subsequent opening from the outside.

    [0025] Fig.5 shows the door latch mechanism 10 in an unlocked position with the child safety feature off. It can be seen that the cam has been rotated (either by operating the inside release lever when the cam was in the position shown in Fig.4 or by independent rotation of the cam directly eg by a power actuator) such that abutment 22b now rests on lobe 33 allowing operation of the outside release lever 40 to unlatch the latch mechanism as described above. Furthermore abutment 21b remains in contact with lobe 31 thus ensuring that operation of the inside release lever also unlatches the door mechanism.

    [0026] Fig.6 shows the door latch mechanism 10 in a released position. This is achieved by rotation of cam 30 in a anticlockwise direction which allows contact between corresponding lost motion abutments (not shown) on the pawl lifter 20 and cam 30. Such lost motion abutments allow the cam 30 to rotate the pawl lifter 20 to release the door latch mechanism independently of the operation of the outside release lever 40 or the inside release lever 43.

    [0027] Note that only a single cam is required to effect the various modes of operation.

    [0028] In further embodiments the inside and outside lock links can be mounted directly on the pawl.


    Claims

    1. A latch mechanism (10) including a housing (11), a pawl (15) movably mounted in the housing to release the latch mechanism, at least one of an inside and outside lock link (21, 22) mounted so as to be moveable between a first position at which operation of an associated release means (43, 40) causes movement of the pawl to release the latch, and a second position at which operation of the associated release means does not cause movement of the pawl characterised in that the at least one lock link is mounted for movement with the pawl such that movement of the pawl is necessarily accompanied by movement of the link.
     
    2. A latch mechanism as defined in claim 1 in which the pawl is rotatably mounted in the housing.
     
    3. A latch mechanism as defined in claim 1 or 2 in which a pawl lifter (20) is connected to a pawl and the at least one lock link is mounted on the pawl lifter.
     
    4. A latch mechanism as defined in any preceding claim wherein the at least one lock link is mounted for rotation about a common first axis (16) with the pawl (15).
     
    5. A latch mechanism as defined in any preceding claim in which the at least one lock link is pivotally mounted about a second axis for rotational movement between its first and second positions.
     
    6. A latch mechanism as defined in claim 5 when dependent upon claim 3 wherein the rotation of the at least one lock link about the second axis occurs relative to the pawl lifter.
     
    7. A latch mechanism as defined in any preceding claim in which the inside and outside lock link are both mounted such that movement of the pawl is necessarily accompanied by movement of both lock links.
     
    8. A latch mechanism as defined in claim 7 wherein the inside and outside lock links are both mounted for rotation about a common first axis with the pawl.
     
    9. A latch mechanism as defined in claim 8 wherein rotation of one of the inside and outside lock links about the common first axis is necessarily accompanied by a corresponding rotation of the other of the lock links about the first axis.
     
    10. A latch mechanism as defined in any preceding claim in which indexing of a cam (30) effects movement of the at least one lock link between its first and second positions.
     
    11. A latch mechanism as defined in claim 10 in which the cam is rotationally mounted for indexing.
     
    12. A latch mechanism as defined in claim 11 when dependent upon claim 2 in which the cam is rotationally mounted co-axially with the pawl.
     
    13. A latch mechanism as defined in any one of claims 10 to 12 in which the cam includes at least two cam lobes (31, 32, 33) which position the at least one lock link in one of the first and second positions, with the at least two cam lobes being separated by a cam valley which positions the at least one lock link in the other of the first and second positions.
     
    14. A latch mechanism as defined in any one of claims 10 to 13 in which indexing of the cam effects movement of both the inside and outside lock links.
     
    15. A latch mechanism as defined in any one of claims 10 to 14 in which the cam has a plurality of lobes.
     
    16. A latch mechanism as defined in any one of claims 10 to 15 in which the release means is capable of indexing the cam to move at least one of the lock links between the first and second positions.
     
    17. A latch mechanism as defined in claim 16 in which the release means is capable of indexing the cam to move at least one of the lock links from its second position to its first position.
     
    18. A latch mechanism as defined in any preceding claim in which movement of the at least one lock link between its first and second position is effected by a power actuator.
     
    19. A latch mechanism as defined in any previous claim in which the pawl is capable of being moved to release the latch by a power actuator.
     
    20. A latch mechanism as defined in claim 19 when dependent upon claim 18 in which the power actuator which indexes the cam is the same power actuator which moves the pawl.
     
    21. A latch mechanism as defined in claim 20 in which the power actuator drives the cam such that an abutment on the cam operatively co-acts with an abutment fast with the pawl to release the latch mechanism.
     
    22. A latch mechanism as defined in any preceding claim having a set of operating modes, each mode having alternate states, the set including at least one of a lock mode and a super lock mode, and at least one of a child safety mode and a release mode, changing of the latch mechanism between alternate states of each of the at least two modes of the set being effected by a single power actuator.
     
    23. A latch mechanism as defined in claim 22 in which the set includes the lock mode and the super lock mode and at least one of the child safety mode and release mode.
     
    24. A latch mechanism as defined in claim 22 or 23 in which the set includes at least one of the lock mode and super lock mode and both of the child safety mode and the release mode.
     
    25. A latch mechanism as defined in any preceding claim having a set of operating modes, each mode having alternate states, the set including a child safety mode and a release mode, changing of the latch mechanism between alternate states of each of the modes being effected by a single power actuator.
     


    Ansprüche

    1. Schließmechanismus (10) mit einem Gehäuse (11), einer Klinke (15), die beweglich in dem Gehäuse angebracht ist, um einen Riegel (12) freizugeben, wobei wenigstens ein inneres oder ein äußeres Verriegelungselement (21, 22) so angebracht ist, daß es zwischen einer ersten Stellung, in der die Betätigung einer zugehörigen Freigabeeinrichtung (43, 40) die Bewegung der Klinke verursacht, um den Riegel freizugeben, und einer zweiten Stellung, in der die Betätigung der zugehörigen Freigabeeinrichtung keine Bewegung der Klinke verursacht, bewegt werden kann, dadurch gekennzeichnet, daß das wenigstens eine Verriegelungselement für eine Bewegung mit der Klinke so angebracht ist, daß die Bewegung der Klinke zwangsläufig mit einer Bewegung des Verriegelungselements einhergeht.
     
    2. Schließmechanismus nach Anspruch 1, bei dem die Klinke drehbar in dem Gehäuse angebracht ist.
     
    3. Schließmechanismus nach Anspruch 1 oder 2, bei dem ein Klinkenheber (20) mit einer Klinke verbunden ist und das wenigstens eine Verriegelungselement auf dem Klinkenheber angebracht ist.
     
    4. Schließmechanismus nach einem der vorhergehenden Ansprüche, bei dem das wenigstens eine Verriegelungselement so angebracht ist, daß es sich mit der Klinke (15) um eine gemeinsame erste Achse (16) drehen kann.
     
    5. Schließmechanismus nach einem der vorhergehenden Ansprüche, bei dem das wenigstens eine Verriegelungselement für eine Drehbewegung zwischen seiner ersten und seiner zweiten Stellung um eine zweite Achse drehbar angebracht ist.
     
    6. Schließmechanismus nach Anspruch 5, wenn dieser von Anspruch 3 abhängt, wobei die Drehung des wenigstens einen Verriegelungselements um die zweite Achse relativ zu dem Klinkenheber erfolgt.
     
    7. Schließmechanismus nach einem der vorhergehenden Ansprüche, bei dem das innere und das äußere Verriegelungselement beide so angebracht sind, daß die Bewegung der Klinke zwangsläufig mit einer Bewegung beider Verriegelungselemente einhergeht.
     
    8. Schließmechanismus nach Anspruch 7, bei dem das innere und das äußere Verriegelungselement beide so angebracht sind, daß sie sich mit der Klinke um eine gemeinsame erste Achse drehen.
     
    9. Schließmechanismus nach Anspruch 8, bei dem die Drehung des inneren oder des äußeren Verriegelungselements um die gemeinsame erste Achse zwangsläufig mit einer entsprechenden Drehung des jeweils anderen Verriegelungselements um die erste Achse einhergeht.
     
    10. Schließmechanismus nach einem der vorhergehenden Ansprüche, bei dem das Weiterschalten eines Nockens (30) eine Bewegung des wenigstens einen Verriegelungselements zwischen seiner ersten und seiner zweiten Stellung bewirkt.
     
    11. Schließmechanismus nach Anspruch 10, bei dem der Nocken zum Weiterschalten drehbar angebracht ist.
     
    12. Schließmechanismus nach Anspruch 11, wenn dieser von Anspruch 2 abhängt, wobei der Nocken koaxial mit der Klinke drehbar angebracht ist.
     
    13. Schließmechanismus nach einem der Ansprüche 10 bis 12, bei dem der Nocken wenigstens zwei Nockenbuckel (31, 32, 33) umfaßt, die das wenigstens eine Verriegelungselement in der ersten oder in der zweiten Stellung positionieren, wobei die wenigstens zwei Nockenbuckel durch ein Nockental getrennt sind, welches das wenigstens eine Verriegelungselement in der jeweils anderen von der ersten und der zweiten Stellung positioniert.
     
    14. Schließmechanismus nach einem der Ansprüche 10 bis 13, bei dem das Weiterschalten des Nockens die Bewegung sowohl des inneren als auch des äußeren Verriegelungselements bewirkt.
     
    15. Schließmechanismus nach einem der Ansprüche 10 bis 14, bei dem der Nocken mehrere Buckel hat.
     
    16. Schließmechanismus nach einem der Ansprüche 10 bis 15, bei dem die Freigabeeinrichtung den Nocken weiterschalten kann, um wenigstens eines der Verriegelungselemente zwischen der ersten und der zweiten Stellung zu bewegen.
     
    17. Schließmechanismus nach Anspruch 16, bei dem die Freigabeeinrichtung den Nocken weiterschalten kann, um wenigstens eines der Verriegelungselemente von seiner zweiten Stellung in seine erste Stellung zu bewegen.
     
    18. Schließmechanismus nach einem der vorhergehenden Ansprüche, bei dem die Bewegung des wenigstens einen Verriegelungselements zwischen seiner ersten und seiner zweiten Stellung durch einen Stellmotor bewirkt wird.
     
    19. Schließmechanismus nach einem der vorhergehenden Ansprüche, bei dem die Klinke durch einen Stellmotor bewegt werden kann, um den Riegel freizugeben.
     
    20. Schließmechanismus nach Anspruch 19, wenn dieser von Anspruch 18 abhängt, wobei der Stellmotor, der den Nocken weiterschaltet, derselbe Stellmotor ist, der die Klinke bewegt.
     
    21. Schließmechanismus nach Anspruch 20, bei dem der Stellmotor den Nocken so antreibt, daß ein Anschlag an dem Nocken funktionsmäßig mit einem an der Klinke fest angebrachten Anschlag zusammenwirkt, um den Schließmechanismus freizugeben.
     
    22. Schließmechanismus nach einem der vorhergehenden Ansprüche mit einem Satz von Betriebsarten, wobei jede Betriebsart einander abwechselnde Ein/Aus-Zustände hat, wobei der Satz von Betriebsarten wenigstens einen Verriegelungsmodus oder einen Superverriegelungsmodus und wenigstens einen Kindersicherungsmodus oder einen Freigabemodus hat, und wobei die Änderung des Schließmechanismus zwischen einander abwechselnden Zuständen von jeder der wenigstens zwei Betriebsarten des Satzes von Betriebsarten durch einen einzigen Stellmotor bewirkt wird.
     
    23. Schließmechanismus nach Anspruch 22, bei dem der Satz von Betriebsarten den Verriegelungsmodus und den Superverriegelungsmodus und wenigstens den Kindersicherungsmodus oder den Freigabemodus umfaßt.
     
    24. Schließmechanismus nach Anspruch 22 oder 23, bei dem der Satz von Betriebsarten wenigstens den Verriegelungsmodus oder den Superverriegelungsmodus und sowohl den Kindersicherungsmodus als auch den Freigabemodus umfaßt.
     
    25. Schließmechanismus nach einem der vorhergehenden Ansprüche mit einem Satz von Betriebsarten, wobei jede Betriebsart einander abwechselnde Ein/Aus-Zustände hat, wobei der Satz von Betriebsarten einen Kindersicherungsmodus und einen Freigabemodus umfaßt, und wobei die Änderung des Schließmechanismus zwischen einander abwechselnden Zuständen jeder der Betriebsarten durch einen einzigen Stellmotor bewirkt wird.
     


    Revendications

    1. Un mécanisme de verrouillage (10) comprenant un logement (11), un cliquet (15) monté de manière mobile dans le logement pour libérer un verrou (12), au moins une parmi une bielle de verrouillage intérieure et une bielle de verrouillage extérieure (21, 22) montée de manière à être mobile entre une première position dans laquelle l'actionnement de moyens de libération associés (43, 40) entraîne le mouvement du cliquet pour libérer le verrou, et une seconde position dans laquelle l'actionnement des moyens de libération associés n'entraîne pas le mouvement du cliquet caractérisé en ce que la au moins une bielle de verrouillage est montée pour se déplacer avec le cliquet de sorte que le mouvement du cliquet soit nécessairement accompagné du mouvement de la bielle.
     
    2. Un mécanisme de verrouillage selon la revendication 1, dans lequel le cliquet est monté de manière rotatoire dans le logement.
     
    3. Un mécanisme de verrouillage selon la revendication 1 ou 2, dans lequel un crochet de cliquet (20) est connecté à un cliquet et dans lequel la au moins une bielle de verrouillage est montée sur le crochet de cliquet.
     
    4. Un mécanisme de verrouillage selon l'une quelconque des revendications précédentes, dans lequel la au moins une bielle de verrouillage est montée pour tourner autour d'un premier axe commun (16) avec le cliquet (15).
     
    5. Un mécanisme de verrouillage selon l'une quelconque des revendications précédentes, dans lequel la au moins une bielle de verrouillage est montée de manière pivotante autour d'un second axe pour un mouvement de rotation entre ses première et deuxième positions.
     
    6. Un mécanisme de verrouillage selon la revendication 5 lorsqu'elle dépend de la revendication 3, dans lequel la rotation de la au moins une bielle de verrouillage autour du second axe se produit par rapport au crochet de cliquet.
     
    7. Un mécanisme de verrouillage selon l'une quelconque des revendications précédentes, dans lequel la bielle de verrouillage intérieure et la bielle de verrouillage extérieure sont toutes deux montées de sorte que le mouvement du cliquet soit nécessairement accompagné du mouvement des deux bielles de verrouillage.
     
    8. Un mécanisme de verrouillage selon la revendication 7, dans lequel les bielles de verrouillage intérieure et extérieure sont toutes deux montées pour tourner autour d'un premier axe commun avec le cliquet.
     
    9. Un mécanisme de verrouillage selon la revendication 8 dans lequel la rotation de l'une des bielles de verrouillage intérieure et extérieure autour du premier axe commun est nécessairement accompagnée d'une rotation correspondante de l'autre bielle de rotation autour du premier axe.
     
    10. Un mécanisme de verrouillage selon l'une quelconque des revendications précédentes, dans lequel l'indexation d'une came (30) entraîne le mouvement de la au moins une bielle de verrouillage entre ses première et seconde positions.
     
    11. Un mécanisme de verrouillage selon la revendication 10, dans lequel la came est montée de manière rotatoire pour indexation.
     
    12. Un mécanisme de verrouillage selon la revendication 11, lorsqu'elle dépend de la revendication 2 dans lequel la came est montée de manière rotatoire de façon coaxiale avec le cliquet.
     
    13. Un mécanisme de verrouillage selon l'une quelconque des revendications 10 à 12 dans lequel la came comprend au moins deux lobes de came (31, 32, 33) qui positionnent la au moins une bielle de verrouillage dans l'une des première et seconde positions, les au moins deux lobes étant séparés par un creux de came qui positionne la au moins une bielle de verrouillage dans l'autre des première et seconde positions.
     
    14. Un mécanisme de verrouillage selon l'une quelconque des revendications 10 à 13, dans lequel l'indexation de la came entraîne le mouvement des deux bielles de verrouillage intérieure et extérieure.
     
    15. Un mécanisme de verrouillage selon l'une quelconque des revendications 10 à 14, dans lequel la came possède une pluralité de lobes.
     
    16. Un mécanisme de verrouillage selon l'une quelconque des revendications 10 à 15, dans lequel les moyens de libération sont capables d'indexer la came pour déplacer au moins une des bielles de verrouillage entre les première et seconde positions.
     
    17. Un mécanisme de verrouillage selon la revendication 16, dans lequel les moyens de libération sont capables d'indexer la came pour déplacer au moins une des bielles de verrouillage de sa seconde position dans sa première position.
     
    18. Un mécanisme de verrouillage selon l'une quelconque des revendications précédentes dans lequel le mouvement de la au moins une bielle de verrouillage entre sa première position et sa seconde position est réalisé à l'aide d'un dispositif d'actionnement électrique.
     
    19. Un mécanisme de verrouillage selon l'une quelconque des revendications précédentes dans lequel le cliquet est capable d'être déplacé pour libérer le verrou à l'aide d'un dispositif d'actionnement électrique.
     
    20. Un mécanisme de verrouillage selon la revendication 19, lorsqu'elle dépend de la revendication 18 dans lequel le dispositif d'actionnement électrique qui indexe la came est le même dispositif d'actionnement électrique qui déplace le cliquet.
     
    21. Un mécanisme de verrouillage selon la revendication 20, dans lequel le dispositif d'actionnement électrique commande la came de sorte qu'une butée sur la came agit de manière de concert en fonctionnement avec une butée liée au cliquet pour libérer le mécanisme de verrouillage.
     
    22. Un mécanisme de verrouillage selon l'une quelconque des revendications précédentes ayant un ensemble de modes de fonctionnement, chaque mode ayant des états activés/désactivés alternés, l'ensemble comprenant au moins un mode parmi un mode verrouillé et un mode super-verrouillé, et au moins un parmi un mode sécurité enfants et un mode libération, le passage du mécanisme de verrouillage entre des états alternés de chacun des au moins deux modes de l'ensemble étant effectué à l'aide d'un dispositif d'actionnement électrique unique.
     
    23. Un mécanisme de verrouillage selon la revendication 22 dans lequel l'ensemble comprend le mode verrouillé et le mode super-verrouillé et au moins un mode parmi le mode sécurité enfants et le mode libération.
     
    24. Un mécanisme de verrouillage selon la revendication 22 ou 23 dans lequel l'ensemble comprend au moins un mode parmi le mode verrouillé et le mode super-verrouillé et les deux modes sécurité enfants et libération.
     
    25. Un mécanisme de verrouillage selon l'une quelconque des revendications précédentes ayant un ensemble de modes de fonctionnement, chaque mode possédant des états activés/désactivés alternés, l'ensemble comprenant un mode sécurité enfants et un mode libération, le passage du mécanisme de verrouillage entre des états alternés de chacun des modes s'effectuant à l'aide d'un dispositif d'actionnement électrique unique.
     




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