EP0082761B1 - Vehicle door lock - Google Patents

Vehicle door lock Download PDF

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Publication number
EP0082761B1
EP0082761B1 EP82402273A EP82402273A EP0082761B1 EP 0082761 B1 EP0082761 B1 EP 0082761B1 EP 82402273 A EP82402273 A EP 82402273A EP 82402273 A EP82402273 A EP 82402273A EP 0082761 B1 EP0082761 B1 EP 0082761B1
Authority
EP
European Patent Office
Prior art keywords
bolt
latch
locking element
latch according
operating lever
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82402273A
Other languages
German (de)
French (fr)
Other versions
EP0082761A1 (en
Inventor
Gérard Escaravage
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CAMBIO RAGIONE SOCIALE;ECIA - EQUIPEMENTS ET COMPO
Original Assignee
Aciers et Outillage Peugeot SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aciers et Outillage Peugeot SA filed Critical Aciers et Outillage Peugeot SA
Publication of EP0082761A1 publication Critical patent/EP0082761A1/en
Application granted granted Critical
Publication of EP0082761B1 publication Critical patent/EP0082761B1/en
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/12—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
    • E05B81/14—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on bolt detents, e.g. for unlatching the bolt
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B85/00—Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
    • E05B85/20—Bolts or detents
    • E05B85/24—Bolts rotating about an axis
    • E05B85/26—Cooperation between bolts and detents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/1043—Swinging
    • Y10T292/1044—Multiple head
    • Y10T292/1045—Operating means
    • Y10T292/1047—Closure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/1043—Swinging
    • Y10T292/1075—Operating means
    • Y10T292/1082—Motor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/14—Ball

Definitions

  • the present invention relates to a lock, in particular for the door of a motor vehicle, of the type comprising on the one hand a housing for the lock mechanism and on the other hand a keeper movable relative to this housing, the lock mechanism being provided a bolt oscillating around an axis which is perpendicular to the direction of movement of the keeper with which this bolt cooperates by a fork-shaped portion as well as a movable lever for operating the lock which is intended to authorize the rotation of the bolt in the direction of release of the striker by means of a blocking member interposed between the bolt and the maneuvering lever, the blocking member being movably mounted in one of the two parts formed by the bolt and the maneuvering lever between a projecting position to secure the parts and a retracted position to allow the free movement of rotation of the bolt relative to the lever, for securing the second of the two parts comprises ant at least one notch into which the blocking member is intended to penetrate and the two parts being mounted so as to be able to move apart from one another in order to bring the
  • Such a lock is known from French patent 2472651.
  • the operating lever of this lock is formed by an oscillating arm carrying as a locking member a grooved roller which by its edge is engaged against a profiled surface of the bolt so that the roller "rolls" on this surface during the operation of the lock, both in the locking direction and in that of unlocking.
  • the operating lever is elastically urged in order to press the roller on the cam of the bolt with a certain force.
  • This roller is secured to the swinging arm by a hairpin spring, one branch of which passes through the groove of the roller.
  • the grooved roller described in this patent is certainly capable of reducing the friction between the bolt and the operating lever and in this sense provides an improvement compared to the conventional technique which generally recommends direct contact between the cam and the operating lever.
  • the roller in this known lock, the roller must be resiliently pressed against the profiled surface or cam of the bolt with a certain force under pain of creating instabilities in the positioning of the bolt.
  • the cam also includes high areas defining stops which abut against the grooved roller for blocking the bolt. These high areas are necessarily with fairly steep slopes and must be crossed by the roller during each opening and closing operation of the lock. Thus, this arrangement despite the reduction of friction by a "rolling" roller is subject to premature wear.
  • the force with which the lock must be closed or opened is a direct function of the elastic force with which the roller is pressed on the cam.
  • this force must be relatively large. This may cause some discomfort for the user or, if necessary, require automatic control mechanisms of comparatively large power.
  • the invention aims to provide an improved lock devoid of the aforementioned drawbacks.
  • a lock of the type defined above characterized in that said blocking member is mounted in a housing formed in the first of said parts being delimited by a profiled edge thereof, housing which in the unlocked position of the lock is closed by a portion of a profiled edge of the second of said parts, located opposite the profiled edge of the first part and having said notch.
  • Figs. 1 to 8 We will first refer to Figs. 1 to 8 to examine the construction of the lock according to the preferred embodiment of the invention.
  • This lock firstly comprises a box 1 of rectangular shape closed by a cover 2. If the lock is used for a vehicle door, which is a preferred application, this box is pressed by its bottom against the edge of the door or optionally incorporated therein.
  • the housing 1 comprises a transverse blind passage 3 with a flared inlet 4 in which is intended to penetrate a keeper 5 movable in translation relative to the housing.
  • this keeper 5 which is a simple piece of metal round is fixed in the amount associated with the door fitted with the housing 1.
  • the articulation pin 8 is riveted on the cover 2 as shown at 13 in FIG. 2 and positioned axially and transversely relative to the bottom of the housing 1 by positioning lugs 14a and 14b projecting from this bottom of the housing.
  • the barrel of this spindle constitutes the axis of oscillation of two parallel plates 15 and 16 which are integral in rotation with one another by a spacer 17 by means of pins 18 obtained by deformation in opposite directions of this spacer and engaged in axial holes 19 provided in the respective plate 15 or 16.
  • the plate 15 has a first notch 20 to be described in detail later, a second notch 21 for hooking one of the branches of a helical return spring 22 and a heel 23 forming a stop.
  • the return spring 22 is engaged on the positioning lug 14a of the casing 1 (coaxial with the spindle 8) and its opposite branch bears against the positioning lug 14b which occupies an eccentric position relative to this spindle like this is shown clearly in FIG. 3.
  • the bolt assembly 7 is biased by the spring 22 to rotate clockwise, considering FIG. 1 (arrow F 2 ).
  • the plate 16 has a fork-shaped portion 24 which is intended to overlap the keeper 5 when the lock is locked as shown in FIG. 1.
  • the operating lever 9 (Fig. 1, 6 and 7) is formed by a slightly arched plate which is rotatably mounted around the spindle 10 by one of these ends.
  • This pin 10 is surrounded by a helical spring 25, one of the branches of which is hooked on a stop lug 26 of the cover 2 and the opposite branch of which is engaged in a hole 27 in the lever 9 to urge the latter in the opposite direction. clockwise (seen in Fig. 1).
  • the operating lever 9 has a concave curved edge 28 opposite the plate 15 which has a curved conjugate edge 29 of convex shape in which the notch 20 is cut.
  • the curved edge 29 of the lever 9 has two adjacent notches 30 and 31
  • the edges 28 and 29 have an arc shape.
  • the operating lever 9 On the side opposite to the plate 15, the operating lever 9 has a curved edge 32 forming a cam follower.
  • the actuation assembly 11 comprises an electric drive motor 33, the output shaft of which is provided with an endless screw 34.
  • the latter meshes with a toothed wheel 35 rotatably mounted around a fixed spindle 36 (Fig. 4 and 6).
  • the toothed wheel 35 carries a cam ring 37, a first cam 38 of which is oriented radially in order to cooperate with the outer curved edge 32 of the operating lever 9.
  • the other cam 39 is oriented axially and cooperates with the pusher 41 of a electrical contact 42.
  • the locking member 12 is a roller of circular section whose radius is equal to that of the notches in a circular arc 30 and 31 provided in the operating lever 9. This is mounted between the lateral flanges of a retaining bracket 43 whose extent is such that the roller 12 is held in place in the notch 20 formed in the wafer 15 whatever the operating phase of the lock.
  • the stirrup 43 is mounted oscillating on the spindle 10 and oscillates in concert with the operating lever 9.
  • Fig. 1A shows by a view on a larger scale, the shape of the notch 20 formed in the edge 29 of the plate 15. If we consider the pivoting movement of the bolt assembly 7 in the direction of opening of the lock (arrow F 2 ), the notch 20 is delimited by an upstream rounded 20a forming a pusee beak for the locking member 12 and this rounded is connected to a portion of surface 20b roughly in arc of circle and concave, in turn connected to a flat sliding surface 20c which ends on a spout 20d for holding the blocking member 12.
  • connection surface 20b in an arc of a circle has a radius which is less than that of the roller or locking member 12.
  • the volume of the notch 20 is chosen in such a way that the roller 12 can completely s 'retract within the limits of the periphery of the plate 15 which is defined, in the region of the notch 20 by the fictitious line connecting the two sections of the curved edge 29 of the plate 15. In other words to retract , the roller 12 can slide on the flat surface 20c to be housed in the part of the notch 20 which is defined by the connection surface 20b.
  • a damper 44 is housed at the bottom of the passage 3, this damper being crushed by the keeper 5 when the lock is completely locked.
  • Fig. 9A the lock is at rest in the open position (door open).
  • the bolt 7 is tilted to its extreme unlocking position in which it is placed under the action of the spring 22, the position being fixed by the heel 23 which, serving as a stop abuts against the rear edge of the operating lever 9.
  • the conjugate edges 28 and 29 are offset with respect to each other, the notch 20 being located opposite the end of the edge 28 which is distant from the articulation pin 10.
  • the member blocking or roller 12 is placed in the “upstream” part of the notch 20 seen in the direction F 2 of bias towards the opening of the bolt 7.
  • the cam 38 is in contact with the outer convex edge 32 of the operating lever 9
  • the electric motor is de-energized.
  • the keeper 5 comes to meet the forked part of the plate 16 of the bolt 7 by exerting a force f 1 on it.
  • This force acts against the spring 22 and if it is sufficient, initiates the rotation movement of the bolt 7 in the opposite direction to that of the needles of a watch, the spring 22 being progressively tensioned (arrow Fra; Fig. 9B ).
  • the roller 12 is first of all simply transported with the bolt 7 by following the edge 28 of the maneuvering lever. The movement of the keeper continuing, there comes a time when the roller 12 is located opposite the notch 31 hereinafter called "first notch".
  • the lock will be locked in a closing position called "first notch” by a slight backward movement of the bolt in the opposite direction (arrow Fg-b) under the impulse of the spring 22 which can possibly be assisted by the elastic force generated by the damper 44 assumed to be slightly compressed at this time by the keeper.
  • Fig. 9B therefore shows the lock in this particular “first notch” locking condition.
  • the roller 12 To move from this position to the next ("second notch"), the roller 12 should be transferred from the position of FIG. 9B to that of FIG. 9C.
  • the keeper again exerting a force on the bolt 7, the latter continues its movement in the direction Fra which causes the planar surface 20c (Fig. 1A) to move away from the concave edge 28 of the operating lever 9.
  • the available volume for the roller 12 increases and the latter can therefore come out of the notch 31 in which it was previously engaged.
  • the bolt still continuing its movement, it pushes the roller 12 forward so that the latter crosses the ridge between the two notches 30 and 31.
  • the motor 33 To unlock the lock, the motor 33 must be excited to cause the gear 35 to rotate in the direction of arrow F 4 .
  • the cam 38 leaves the convex edge 32 of the operating lever 9 which makes it rotate about its axis in the direction of the arrow F 5 while being driven by the force of the spring 25. This results in an enlargement of the volume available to the roller 12 from which the notch is released.
  • the bolt 7 is immediately brought back on the one hand by the spring 22 and on the other hand (if necessary) by the keeper which is pushed back by the damper 44 and possibly the door seals.
  • the roller 12 is then caused to fall by gravity into the bottom of the notch 20 to find itself again in its retracted position. If the lock occupies a different position, this movement can be caused by a spring similar to spring 55 (then absent) but acting in the opposite direction. However, in any event and regardless of the position of the lock, the roller 12 is returned to its retracted position as soon as the lever 9 has returned to its initial position, which occurs very quickly. after a complete revolution of the cam 38, that is to say before the bolt has found its own (Fig. 9F).
  • Fig. 11 shows an electrical diagram of an example of a motor control circuit 33.
  • the lock can be controlled by a simple push button 45 which is mounted between one of the poles of a source supply and an assembly 46 for instantaneous stop of the motor 33.
  • the push-button 45 is mounted in parallel on the switch 42 acting as a holding contact.
  • the assembly 46 comprises a short-circuit transistor 47 of the armature of the motor 33. Its collector is connected with one of the motor terminals to the opposite pole of the power source, while by its emitter is connected between the cathode of a diode 48 and the opposite terminal of the motor armature.
  • the base of the transistor is connected by a resistor R1 to the anode of the diode 48 and to the parallel mounting of the push button 45 and of the switch 42.
  • a resistor R2 connects the collector of the transistor 47 to the anode of the diode 48.
  • the opening of the lock requires a force which is none other than the friction force between the cam 38 and the convex outer surface 32 of the lever.
  • the roller 12 does not have to cross any obstacle either during locking or during unlocking.
  • the electric motor 33 can therefore be of very low power allowing it to be inserted into the lock housing.
  • the roller 12 is under stress only in the locking position of the lock which is static. During its movements, it moves without being pressed against any surface which reduces wear to a minimum value. It is the same with the profiled surfaces of the bolt on the one hand and of the operating lever on the other hand.
  • Figs. 12 and 13 show a variant of the lock in which the two plates 15 and 16 are integral with one another with the possibility of a slight angular movement. To this end, they are connected to each other by a spacer 49 which by a first deformation 50 is rigidly fixed to the plate 16, while a second deformation 51 is engaged with a slight play in a slot 52 in bean shape provided in the other plate 15. The spacer is mounted to oscillate on the spindle 8.
  • a helical spring 53 is mounted around the spindle while being hooked by its ends respectively in the plates 15 and 16 in order to urge them around the spindle 8 in the direction of the arrows F 6 .
  • Fig. 12A shows another variant in which there is provided a roller 12A with a circular groove 54 into which a spring 55 of wire can penetrate urging it towards the bottom of the notch 20.
  • This spring 55 is fixed in the plate 16 extending roughly perpendicular to the flat surface - 20c of the notch 20, and is tensioned when the roller 12A is in its "second notch" locking position.
  • Figs. 14 and 15 illustrate another variant in which the lock according to the invention comprises a bolt 7A produced in one piece from a single plate with two plates 56 and 57 arranged in parallel and joined together by a joining part 58 perpendicular to these trays.
  • the assembly is mounted oscillating on the spindle 8 which crosses the plate 56.
  • the latter has the forked portion intended to overlap the keeper 5 for locking, while the plate 57 comprises the notch 20.
  • the variant also includes a blocking member 12B which is here formed by a spherical ball.
  • Fig. 16 shows another variant in which the lock comprises a blocking member 12 constituted by a block in the form of a rectangular parallelepiped.
  • the operating lever 9 has notches 30A and 31A in the form of a V, while the notch 20A is delimited by two mutually perpendicular surfaces 20A-a and 20A-b.
  • the blocking member 12D is in the form of a shouldered cylindrical pin which is mounted in a housing 20B provided in the plate 16. This pin is biased towards the outside by a spring 59.
  • the operating lever 9 has a single notch 60 mounted, preferably mobile in translation instead of being pivoting (see arrows F 7 ).

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  • Lock And Its Accessories (AREA)

Description

La présente invention est relative à une serrure, notamment pour portière de véhicule automobile, du type comportant d'une part un boîtier pour le mécanisme de serrure et d'autre part une gâche mobile par rapport à ce boitier, le mécanisme de serrure étant pourvu d'un pêne oscillant autour d'un axe qui est perpendiculaire à la direction de mouvement de la gâche avec laquelle ce pêne coopère par une portion en forme de fourche ainsi que d'un levier mobile de manoeuvre de la serrure qui est destiné à autoriser la rotation du pêne dans le sens de la libération de la gâche par l'intermédiaire d'un organe de blocage interposé entre le pêne et le levier de manceuvre, l'organe de blocage étant monté mobile dans l'une des deux pièces formées par le pêne et le levier de manceuvre entre une position en saillie pour solidariser les pièces et une position rétractée pour autoriser le libre mouvement de rotation du pêne par rapport au levier, pour la solidarisation la seconde des deux pièces comportant au moins une encoche dans laquelle l'organe de blocage est destiné à pénétrer et les deux pièces étant montées de manière à pouvoir s'écarter l'une de l'autre pour faire sortir l'organe de blocage de l'encoche prévue dans ladite seconde pièce.The present invention relates to a lock, in particular for the door of a motor vehicle, of the type comprising on the one hand a housing for the lock mechanism and on the other hand a keeper movable relative to this housing, the lock mechanism being provided a bolt oscillating around an axis which is perpendicular to the direction of movement of the keeper with which this bolt cooperates by a fork-shaped portion as well as a movable lever for operating the lock which is intended to authorize the rotation of the bolt in the direction of release of the striker by means of a blocking member interposed between the bolt and the maneuvering lever, the blocking member being movably mounted in one of the two parts formed by the bolt and the maneuvering lever between a projecting position to secure the parts and a retracted position to allow the free movement of rotation of the bolt relative to the lever, for securing the second of the two parts comprises ant at least one notch into which the blocking member is intended to penetrate and the two parts being mounted so as to be able to move apart from one another in order to bring the blocking member out of the notch provided in said second piece.

Une telle serrure est connue du brevet français 2472651. Le levier de manoeuvre de cette serrure est formé par un bras oscillant portant en tant qu'organe de blocage un galet à gorge qui par sa tranche est engagée contre une surface profilée du pêne de sorte que le galet «roule» sur cette surface au cours de la manceuvre de la serrure, tant dans le sens du verrouillage que dans celui du déverrouillage. Pour assurer l'application constante du galet sur la surface profilée ou came du pêne, le levier de manoeuvre est sollicité élastiquement afin d'appuyer le galet sur la came du pêne avec une certaine force. Ce galet est solidaire du bras oscillant par un ressort en épingle à cheveux dont une branche passe dans la gorge du galet.Such a lock is known from French patent 2472651. The operating lever of this lock is formed by an oscillating arm carrying as a locking member a grooved roller which by its edge is engaged against a profiled surface of the bolt so that the roller "rolls" on this surface during the operation of the lock, both in the locking direction and in that of unlocking. To ensure the constant application of the roller on the profiled surface or cam of the bolt, the operating lever is elastically urged in order to press the roller on the cam of the bolt with a certain force. This roller is secured to the swinging arm by a hairpin spring, one branch of which passes through the groove of the roller.

Le galet à gorge décrit dans ce brevet est, certes, capable de réduire les frottements entre pêne et levier de manoeuvre et apporte en ce sens une amélioration par rapport à la technique classique qui préconise en général un contact direct entre came et levier de manoeuvre.The grooved roller described in this patent is certainly capable of reducing the friction between the bolt and the operating lever and in this sense provides an improvement compared to the conventional technique which generally recommends direct contact between the cam and the operating lever.

Toutefois, il reste que dans cette serrure connue, le galet doit être élastiquement appuyé contre la surface profilée ou came du pêne avec une certaine force sous peine de créer des instabilités dans le positionnement du pêne. La came comporte par ailleurs, des plages hautes définissant des arrêts qui viennent buter contre le galet à gorge pour le blocage du pêne. Ces plages hautes sont nécessairement à pentes assez abruptes et doivent être franchies par le galet au cours de chaque manoeuvre d'ouverture et de fermeture de la serrure. Ainsi, cet agencement malgré la réduction des frottements par un galet «roulant» est sujet à usure prématurée.However, the fact remains that in this known lock, the roller must be resiliently pressed against the profiled surface or cam of the bolt with a certain force under pain of creating instabilities in the positioning of the bolt. The cam also includes high areas defining stops which abut against the grooved roller for blocking the bolt. These high areas are necessarily with fairly steep slopes and must be crossed by the roller during each opening and closing operation of the lock. Thus, this arrangement despite the reduction of friction by a "rolling" roller is subject to premature wear.

Par ailleurs, la force avec laquelle la serrure doit être fermée ou ouverte est directement fonction de la force élastique avec laquelle le galet est appuyé sur la came. Or, pour obtenir un blocage satisfaisant, il faut que cette force soit relativement importante. Ceci risque de provoquer un certain inconfort pour l'utilisateur ou le cas échéant de nécessiter des mécanismes de commande automatiques d'une puissance comparativement importante.Furthermore, the force with which the lock must be closed or opened is a direct function of the elastic force with which the roller is pressed on the cam. However, to obtain a satisfactory blocking, this force must be relatively large. This may cause some discomfort for the user or, if necessary, require automatic control mechanisms of comparatively large power.

L'invention a pour but de fournir une serrure perfectionnée dépourvue des inconvénients précités.The invention aims to provide an improved lock devoid of the aforementioned drawbacks.

Elle a donc pour objet une serrure du type défini ci-dessus caractérisée en ce que ledit organe de blocage est monté dans un logement pratiqué dans la première desdites pièces en étant délimité par un bord profilé de celui-ci, logement qui en position non verrouillée de la serrure est fermé par une portion d'un bord profilé de la seconde desdites pièces, situé en regard du bord profilé de la première pièce et présentant ladite encoche.It therefore relates to a lock of the type defined above characterized in that said blocking member is mounted in a housing formed in the first of said parts being delimited by a profiled edge thereof, housing which in the unlocked position of the lock is closed by a portion of a profiled edge of the second of said parts, located opposite the profiled edge of the first part and having said notch.

Il résulte de ces caractéristiques qu'aucun organe élastique n'est nécessaire pour maintenir ·l'organe de blocage en appui permanent contre une surface de came avec une force qui doit assurer le verrouillage de la serrure. Au contraire, le verrouillage résulte d'un coincement positif de l'organe de blocage entre le pêne et le levier de manoeuvre qui est maintenu pendant le verrouillage de la serrure, tandis que pour déverrouiller celle-ci, l'organe de blocage n'est plus positivement bloqué entre les deux pièces, car celles-ci sont alors ecartées l'une de l'autre en coupant leur liaison de coincement qui était assurée par l'organe de blocage.It follows from these characteristics that no elastic member is necessary to maintain · the locking member in permanent support against a cam surface with a force which must ensure the locking of the lock. On the contrary, the locking results from a positive jamming of the blocking member between the bolt and the operating lever which is maintained during the locking of the lock, while in order to unlock the latter, the blocking member does not is more positively blocked between the two parts, because these are then separated from one another by cutting their wedging connection which was provided by the blocking member.

Au cours des mouvements qui se produisant pendant le verrouillage et le déverrouillage de la serrure, les pièces en contact ne sont pas en appui élastique les unes contre les autres et en particulier l'organe de blocage ne subit aucune sollicitation élastique de valeur importante. Par conséquent, l'usure des surfaces en contact des pièces est extrêmement réduite.During the movements which occur during the locking and unlocking of the lock, the parts in contact are not in elastic abutment against one another and in particular the blocking member does not undergo any elastic stress of significant value. Consequently, the wear of the surfaces in contact with the parts is extremely reduced.

Des modes de réalisation additionnels sont caractérisé dans les revendications dépendantes.Additional embodiments are characterized in the dependent claims.

L'invention est exposée ci-après plus en détail à l'aide de dessins représentant seulement un mode d'éxécution, sur lesquels:

  • - la Fig. 1 est une vue en élévation et en coupe d'une serrure suivant l'invention;
  • - la Fig. 1A est une vue partielle à plus grande échelle montrant un détail de la serrure de la Fig. 1;
  • - les Fig. 2 à 8 sont des vues en coupe prises respectivement selon les lignes de coupe correspondantes indiquées sur la Fig. 1;
  • - les Fig. 9A à 9F représentent schématiquement toutes les phases de fonctionnement de la serrure;
  • - la Fig. 10 est une vue schématique de la serrure montrant les efforts subis par ses pièces essentielles;
  • - la Fig. 11 est un schéma électrique du circuit de commande du moteur d'actionnement de la serrure;
  • - la Fig. 12 représente par une vue en coupe et en élévation partielle une variante de la serrure suivant l'invention;
  • - la Fig. 12A est une variante de la serrure visant à obtenir d'une autre manière le résultat auquel conduit la variante de la Fig. 12;
  • - la Fig. 13 est une vue en coupe prise suivant la ligne 13-13 de la Fig. 12;
  • - la Fig. 14 représente une autre variante de la serrure;
  • - la Fig. 15 est une vue en coupe prise suivant la ligne 15-15 de la Fig. 14;
  • - les Fig. 16 et 17 représentent deux autres variantes de la serrure suivant l'invention.
The invention is set out below in more detail using drawings representing only one embodiment, in which:
  • - Fig. 1 is an elevational and sectional view of a lock according to the invention;
  • - Fig. 1A is a partial view on a larger scale showing a detail of the lock of FIG. 1;
  • - Figs. 2 to 8 are sectional views taken respectively along the corresponding section lines indicated in FIG. 1;
  • - Figs. 9A to 9F schematically represent all the operating phases of the lock;
  • - Fig. 10 is a schematic view of the lock showing the forces undergone by its essential parts;
  • - Fig. 11 is an electrical diagram of the circuit control of the lock actuation motor;
  • - Fig. 12 shows a sectional view in partial elevation of a variant of the lock according to the invention;
  • - Fig. 12A is a variant of the lock aiming in another way to obtain the result to which the variant of FIG. 12;
  • - Fig. 13 is a sectional view taken along line 13-13 of FIG. 12;
  • - Fig. 14 shows another variant of the lock;
  • - Fig. 15 is a sectional view taken along line 15-15 of FIG. 14;
  • - Figs. 16 and 17 show two other variants of the lock according to the invention.

On va tout d'abord se référer aux Fig. 1 à 8 pour examiner la construction de la serrure conforme au mode de réalisation préféré de l'invention.We will first refer to Figs. 1 to 8 to examine the construction of the lock according to the preferred embodiment of the invention.

Cette serrure comporte tout d'abord un boîtier 1 de forme rectangulaire fermé par un couvercle 2. Si la serrure est utilisée pour une portière de véhicule, qui en est une application préférée, ce boîtier est plaqué par son fond contre le chant de la portière ou éventuellement incorporé dans celui-ci. Le boîtier 1 comporte un passage borgne transversal 3 à entrée évasée 4 dans lequel est destinée à pénétrer une gâche 5 mobile en translation par rapport au boîtier. Dans l'application visée ci-dessus, cette gâche 5 qui est un simple bout de rond métallique est fixée dans le montant associé à la portière équipée du boîtier 1.This lock firstly comprises a box 1 of rectangular shape closed by a cover 2. If the lock is used for a vehicle door, which is a preferred application, this box is pressed by its bottom against the edge of the door or optionally incorporated therein. The housing 1 comprises a transverse blind passage 3 with a flared inlet 4 in which is intended to penetrate a keeper 5 movable in translation relative to the housing. In the application referred to above, this keeper 5 which is a simple piece of metal round is fixed in the amount associated with the door fitted with the housing 1.

Ce dernier sert de logement à un mécanisme de serrure 6 dont les sous-ensembles essentiels sont:

  • - un ensemble 7 formant pêne monté oscillant dans le boîtier 1 autour d'une broche 8 dont l'axe est perpendiculaire à la direction F1 de mouvement de la gâche 5;
  • - un levier de manoeuvre 9 monté oscillant dans le boîtier 1 autour d'une broche 10 dont l'axe est parallèle à celui de la broche 8;
  • - un ensemble d'actionnement 11 de la serrure destiné à autoriser l'oscillation du levier de manoeuvre autour de son axe d'oscillation;
  • - un organe de blocage 12 interposé entre l'ensemble formant pêne 7 et le levier de manœuvre9. Chacun des sous-ensembles ainsi agencé sera maintenant décrit en détail.
The latter serves as a housing for a lock mechanism 6, the essential sub-assemblies of which are:
  • - An assembly 7 forming a bolt mounted oscillating in the housing 1 around a spindle 8 whose axis is perpendicular to the direction F1 of movement of the keeper 5;
  • - An operating lever 9 mounted oscillating in the housing 1 around a spindle 10 whose axis is parallel to that of the spindle 8;
  • - An actuation assembly 11 of the lock intended to authorize the oscillation of the operating lever around its axis of oscillation;
  • - A locking member 12 interposed between the bolt assembly 7 and the operating lever 9. Each of the sub-assemblies thus arranged will now be described in detail.

La broche d'articulation 8 est rivée sur le couvercle 2 comme représenté en 13 sur la Fig. 2 et positionnée axialement et transversalement par rapport au fond du boîtier 1 par des ergots de positionnement 14a et 14b en saillie de ce fond de boîtier. Le fût de cette broche constitue l'axe d'oscillation de deux plaquettes parallèles 15 et 16 qui sont solidaires en rotation l'une de l'autre par une entretoise 17 grâce à des tétons 18 obtenus par déformation dans des sens opposés de cette entretoise et engagés dans des trous axiaux 19 prévus dans la plaquette respective 15 ou 16.The articulation pin 8 is riveted on the cover 2 as shown at 13 in FIG. 2 and positioned axially and transversely relative to the bottom of the housing 1 by positioning lugs 14a and 14b projecting from this bottom of the housing. The barrel of this spindle constitutes the axis of oscillation of two parallel plates 15 and 16 which are integral in rotation with one another by a spacer 17 by means of pins 18 obtained by deformation in opposite directions of this spacer and engaged in axial holes 19 provided in the respective plate 15 or 16.

La plaquette 15 présente une première encoche 20 à décrire en détail ultérieurement, une seconde encoche 21 pour l'accrochage de l'une des branches d'un ressort de rappel hélicoïdal 22 ainsi qu'un talon 23 formant butée. Le ressort de rappel 22 est engagé sur l'ergot de positionnement 14a du boïtier 1 (coaxial à la broche 8) et sa branche opposée s'appuie contre l'ergot de positionnement 14b qui occupe une position excentrée par rapport à cette broche comme cela est représenté clairement sur la Fig. 3. L'ensemble formant pêne 7 est sollicité par le ressort 22 à tourner dans le sens des aiguilles d'une montre en considérant la Fig. 1 (flèche F2).The plate 15 has a first notch 20 to be described in detail later, a second notch 21 for hooking one of the branches of a helical return spring 22 and a heel 23 forming a stop. The return spring 22 is engaged on the positioning lug 14a of the casing 1 (coaxial with the spindle 8) and its opposite branch bears against the positioning lug 14b which occupies an eccentric position relative to this spindle like this is shown clearly in FIG. 3. The bolt assembly 7 is biased by the spring 22 to rotate clockwise, considering FIG. 1 (arrow F 2 ).

La plaque 16 présente une portion en forme de fourche 24 qui est destinée à chevaucher la gâche 5 lorsque la serrure est verrouillée comme représentée sur la Fig. 1.The plate 16 has a fork-shaped portion 24 which is intended to overlap the keeper 5 when the lock is locked as shown in FIG. 1.

Le levier de manoeuvre 9 (Fig. 1, 6 et 7) est formé par une plaquette légèrement arquée qui est montée à rotation autour de la broche 10 par l'une de ces extrémités. Cette broche 10 est entourée d'un ressort hélicoïdal 25 dont l'une des branches est accrochée sur un ergot de butée 26 du couvercle 2 et dont la branche opposée est engagée dans un trou 27 du levier 9 pour solliciter ce dernier dans le sens contraire des aiguilles d'une montre (vu sur la Fig. 1).The operating lever 9 (Fig. 1, 6 and 7) is formed by a slightly arched plate which is rotatably mounted around the spindle 10 by one of these ends. This pin 10 is surrounded by a helical spring 25, one of the branches of which is hooked on a stop lug 26 of the cover 2 and the opposite branch of which is engaged in a hole 27 in the lever 9 to urge the latter in the opposite direction. clockwise (seen in Fig. 1).

Le levier de manoeuvre 9 présente un bord courbe concave 28 en regard de la plaquette 15 qui présente un bord conjugué courbe 29 de forme convexe dans lequel est découpée l'encoche 20. Le bord courbe 29 du levier 9 comporte deux encoches adjacentes 30 et 31. Les bords 28 et 29 ont une forme en arc de cercle. Du côté opposé à la plaquette 15, le levier de manoeuvre 9 présente un bord courbe 32 formant contre-came.The operating lever 9 has a concave curved edge 28 opposite the plate 15 which has a curved conjugate edge 29 of convex shape in which the notch 20 is cut. The curved edge 29 of the lever 9 has two adjacent notches 30 and 31 The edges 28 and 29 have an arc shape. On the side opposite to the plate 15, the operating lever 9 has a curved edge 32 forming a cam follower.

L'ensemble d'actionnement 11 comprend un moteur électrique d'entraînement 33 dont l'arbre de sortie est pourvu d'une vis sans fin 34. Celle-ci engrène avec une roue dentée 35 montée à rotation autour d'une broche fixe 36 (Fig. 4 et 6). La roue dentée 35 porte un anneau à cames 37 dont une première came 38 est orientée radialement afin de coopérer avec le bord courbe extérieur 32 du levier de manoeuvre 9. L'autre came 39 est orientée axialement et coopère avec le poussoir 41 d'un contact électrique 42.The actuation assembly 11 comprises an electric drive motor 33, the output shaft of which is provided with an endless screw 34. The latter meshes with a toothed wheel 35 rotatably mounted around a fixed spindle 36 (Fig. 4 and 6). The toothed wheel 35 carries a cam ring 37, a first cam 38 of which is oriented radially in order to cooperate with the outer curved edge 32 of the operating lever 9. The other cam 39 is oriented axially and cooperates with the pusher 41 of a electrical contact 42.

Dans le mode de réalisation préféré de la serrure, l'organe de blocage 12 est un galet de section circulaire dont le rayon est égal à celui des encoches en arc de cercle 30 et 31 prévus dans le levier de manoeuvre 9. Celui-ci est monté entre les flasques latéraux d'un étrier de maintien 43 dont l'étendue est telle que le galet 12 soit maintenu en place dans l'encoche 20 formée dans la plaquette 15 quelle que soit la phase de fonctionnement de la serrure. L'étrier 43 est monté oscillant sur la broche 10 et oscille de concert avec le levier de manoeuvre 9.In the preferred embodiment of the lock, the locking member 12 is a roller of circular section whose radius is equal to that of the notches in a circular arc 30 and 31 provided in the operating lever 9. This is mounted between the lateral flanges of a retaining bracket 43 whose extent is such that the roller 12 is held in place in the notch 20 formed in the wafer 15 whatever the operating phase of the lock. The stirrup 43 is mounted oscillating on the spindle 10 and oscillates in concert with the operating lever 9.

La Fig. 1A montre par une vue à plus grande échelle, la forme de l'encoche 20 pratiquée dans le bord 29 de la plaquette 15. Si on considère le mouvement de pivotement de l'ensemble formant pêne 7 dans le sens d'ouverture de la serrure (flèche F2), l'encoche 20 est délimitée par un arrondi amont 20a formant un bec de pussée pour l'organe de blocage 12 et cet arrondi est raccordé à une portion de surface 20b à peu près en arc de cercle et concave, raccordée à son tour à une surface plane de glissement 20c qui se termine sur un bec 20d de maintien de l'organe de blocage 12.Fig. 1A shows by a view on a larger scale, the shape of the notch 20 formed in the edge 29 of the plate 15. If we consider the pivoting movement of the bolt assembly 7 in the direction of opening of the lock (arrow F 2 ), the notch 20 is delimited by an upstream rounded 20a forming a pusee beak for the locking member 12 and this rounded is connected to a portion of surface 20b roughly in arc of circle and concave, in turn connected to a flat sliding surface 20c which ends on a spout 20d for holding the blocking member 12.

On notera que la surface de raccordement 20b en arc de cercle présente un rayon qui est inférieur à celui du galet ou organe de blocage 12. Par ailleurs, le volume de l'encoche 20 est choisi de telle manière que le galet 12 peut totalement s'escamoter dans les limites de la périphérie de la plaquette 15 qui est définie, dans la zone de l'encoche 20 par la ligne fictive raccordant les deux tronçons du bord courbe 29 de la plaquette 15. En d'autres termes pour s'escamoter, le galet 12 peut glisser sur la surface plane 20c pour se loger dans la partie de l'encoche 20 qui est définie par la surface de raccordement 20b.It will be noted that the connection surface 20b in an arc of a circle has a radius which is less than that of the roller or locking member 12. Furthermore, the volume of the notch 20 is chosen in such a way that the roller 12 can completely s 'retract within the limits of the periphery of the plate 15 which is defined, in the region of the notch 20 by the fictitious line connecting the two sections of the curved edge 29 of the plate 15. In other words to retract , the roller 12 can slide on the flat surface 20c to be housed in the part of the notch 20 which is defined by the connection surface 20b.

On remarquera également qu'un amortisseur 44 est logé au fond du passage 3, cet amortisseur étant écrasé par la gâche 5 lorsque la serrure est complètement verrouillée.It will also be noted that a damper 44 is housed at the bottom of the passage 3, this damper being crushed by the keeper 5 when the lock is completely locked.

Le fonctionnement de la serrure que l'on vient de décrire va maintenant être examiné en faisant référence aux Fig. 9A et 9F.The operation of the lock just described will now be examined with reference to Figs. 9A and 9F.

Sur la Fig. 9A, la serrure est au repos dans la position d'ouverture (portière ouverte). Le pêne 7 se trouve basculé vers sa position extrême de déverrouillage dans laquelle il est placé sous l'action du ressort 22, la position étant fixée par le talon 23 qui, servant de butée vient s'appuyer contre le bord arrière du levier de manoeuvre 9. Les bords conjugués 28 et 29 sont décalés l'un par rapport à l'autre, l'encoche 20 se trouvant en regard de l'extrémité du bord 28 qui est éloignée de la broche d'articulation 10. L'organe de blocage ou galet 12 se trouve placé dans la partie «amont» de l'encoche 20 vu dans lé sens F2 de sollicitation vers l'ouverture du pêne 7. La came 38 est en contact du bord convexe extérieur 32 du levier de manoeuvre 9. Le moteur électrique est désexcité.In Fig. 9A, the lock is at rest in the open position (door open). The bolt 7 is tilted to its extreme unlocking position in which it is placed under the action of the spring 22, the position being fixed by the heel 23 which, serving as a stop abuts against the rear edge of the operating lever 9. The conjugate edges 28 and 29 are offset with respect to each other, the notch 20 being located opposite the end of the edge 28 which is distant from the articulation pin 10. The member blocking or roller 12 is placed in the “upstream” part of the notch 20 seen in the direction F 2 of bias towards the opening of the bolt 7. The cam 38 is in contact with the outer convex edge 32 of the operating lever 9 The electric motor is de-energized.

Lorsque la portière est fermée, la gâche 5 vient rencontrer la partie fourchue de la plaquette 16 du pêne 7 en exerçant une force f1 sur celui-ci. Cette force agit à l'encontre du ressort 22 et si elle est suffisante, amorce le mouvement de rotation du pêne 7 dans le sens contraire de celui des aiguilles d'une montre, le ressort 22 étant progressivement tendu (flèche Fra; Fig. 9B). Le galet 12 est tout d'abord simplement transporté avec le pêne 7 en suivant le bord 28 du levier de manceuvre. Le mouvement de la gâche se poursuivant, il arrive un moment où le galet 12 se trouve en regard de l'encoche 31 appelée ci-après «premier cran». Si l'utilisateur cesse le mouvement de fermeture à cet instant, la serrure sera bloquée dans une position de fermeture dite «premier cran» par un léger recul du pêne dans le sens opposé (flèche Fg-b) sous l'impulsion du ressort 22 qui peut éventuellement être assisté par la force élastique engendrée par l'amortisseur 44 supposé être légèrement comprimé à cet instant par la gâche.When the door is closed, the keeper 5 comes to meet the forked part of the plate 16 of the bolt 7 by exerting a force f 1 on it. This force acts against the spring 22 and if it is sufficient, initiates the rotation movement of the bolt 7 in the opposite direction to that of the needles of a watch, the spring 22 being progressively tensioned (arrow Fra; Fig. 9B ). The roller 12 is first of all simply transported with the bolt 7 by following the edge 28 of the maneuvering lever. The movement of the keeper continuing, there comes a time when the roller 12 is located opposite the notch 31 hereinafter called "first notch". If the user stops the closing movement at this instant, the lock will be locked in a closing position called "first notch" by a slight backward movement of the bolt in the opposite direction (arrow Fg-b) under the impulse of the spring 22 which can possibly be assisted by the elastic force generated by the damper 44 assumed to be slightly compressed at this time by the keeper.

On notera qu'en général, les serrures de véhicule automobile présentent deux positions de verrouillage dites «premier» et «deuxième crans», la position «premier cran» correspondant à une fermeture provisoire de la portière. Dans cette position, la portière n'est pas bloquée véritablement et cet état de choses est signalé immédiatement après démarrage du véhicule par un bruit désagréable incitant le conducteur à s'arrêter pour compléter la fermeture de la portière. La Fig. 9B montre donc la serrure dans cette condition particulière de verrouillage «premier cran».It will be noted that in general, motor vehicle locks have two locking positions called "first" and "second notches", the "first notch" position corresponding to a temporary closing of the door. In this position, the door is not really locked and this state of affairs is signaled immediately after starting the vehicle by an unpleasant noise prompting the driver to stop to complete the closing of the door. Fig. 9B therefore shows the lock in this particular “first notch” locking condition.

Pour passer à partir de cette position vers la suivante («deuxième cran»), il convient que le galet 12 soit transféré de la position de la Fig. 9B à celle de la Fig. 9C. La gâche exerçant de nouveau une force sur le pêne 7, celui-ci poursuit son mouvement dans le sens Fra ce qui fait s'éloigner la surface plane 20c (Fig. 1A) du bord concave 28 du levier de manoeuvre 9. Le volume disponible pour le galet 12 s'accroît et ce dernier peut donc sortir de l'encoche 31 dans laquelle il était engagé auparavant. Le pêne poursuivanttou- jours son mouvement, il pousse le galet 12 vers l'avant de sorte que ce dernier franchit la crête entre les deux encoches 30 et 31. Le mouvement continue jusqu'à ce que le galet 12 soit passé devant l'encoche 30, moment où la portière a comprimé ses joints sur le dormant du véhicule et où la gâche a déformé au maximum l'amortisseur 44 (Fig. 1). Il s'ensuit de nouveau un mouvement de recul du pêne 7, ce qui fait s'engager le galet 12 dans l'encoche 30 du levier de manoeuvre 9. L'ensemble est alors bloqué (Fig. 9D), l'équilibre des forces étant celui représenté sur la Fig. 10. On voit que le galet 12 est en saillie du périmètre du pêne 7 défini par le bord courbe 29, alors qu'auparavant il était escamoté à l'intérieur de ce périmètre pour permettre un libre mouvement de rotation du pêne.To move from this position to the next ("second notch"), the roller 12 should be transferred from the position of FIG. 9B to that of FIG. 9C. The keeper again exerting a force on the bolt 7, the latter continues its movement in the direction Fra which causes the planar surface 20c (Fig. 1A) to move away from the concave edge 28 of the operating lever 9. The available volume for the roller 12 increases and the latter can therefore come out of the notch 31 in which it was previously engaged. The bolt still continuing its movement, it pushes the roller 12 forward so that the latter crosses the ridge between the two notches 30 and 31. The movement continues until the roller 12 has passed in front of the notch 30, when the door has compressed its seals on the frame of the vehicle and when the strike has deformed the shock absorber 44 as far as possible (Fig. 1). There follows again a backward movement of the bolt 7, which causes the roller 12 to engage in the notch 30 of the operating lever 9. The assembly is then blocked (FIG. 9D), the balance of forces being that shown in FIG. 10. It can be seen that the roller 12 projects from the perimeter of the bolt 7 defined by the curved edge 29, whereas previously it was retracted inside this perimeter to allow a free rotational movement of the bolt.

Le transfert de la position en retrait du galet 12 vers sa position en saillie est réalisé par un léger mouvement de recul du pêne pendant lequel la surface plane 20c de l'encoche 20 repousse le galet vers l'extérieur.The transfer from the retracted position of the roller 12 to its projecting position is achieved by a slight recoil movement of the bolt during which the planar surface 20c of the notch 20 pushes the roller outwards.

Pour déverrouiller la serrure, il convient d'exciter le moteur 33 pour provoquer la rotation de la roue dentée 35 dans le sens de la flèche F4. De la sorte, la came 38 quitte le bord convexe 32 du levier de manoeuvre 9 ce qui le fait tourner autour de son axe dans le sens de la flèche F5 en étant animé par la force du ressort 25. Il en résulte un agrandissement du volume disponible au galet 12 dont se dégage alors l'encoche 30. Le pêne 7 est immédiatement ramené en arrière d'une part par le ressort 22 et d'autre part (le cas échéant) par la gâche qui est repoussée par l'amortisseur 44 et éventuellement les joints de portière.To unlock the lock, the motor 33 must be excited to cause the gear 35 to rotate in the direction of arrow F 4 . In this way, the cam 38 leaves the convex edge 32 of the operating lever 9 which makes it rotate about its axis in the direction of the arrow F 5 while being driven by the force of the spring 25. This results in an enlargement of the volume available to the roller 12 from which the notch is released. The bolt 7 is immediately brought back on the one hand by the spring 22 and on the other hand (if necessary) by the keeper which is pushed back by the damper 44 and possibly the door seals.

Si la serrure est placée verticalement comme représentée sur la Fig. 1, le galet 12 est alors amené à tomber par gravité dans le fond de l'encoche 20 pour se trouver de nouveau dans sa position escamotée. Si la serrure occupe une position différente, ce mouvement peut être provoqué par un ressort analogue au ressort 55 (alors absent) mais agissant en sens opposé. Mais, en tout état de cause et quelle que soit la position de la serrure, le galet 12 est ramené dans sa position escamotée dès que le levier 9 a retrouvé sa position initiale ce qui se produit très rapidement après un tour complet de la came 38, c'est-à-dire avant que le pêne n'ait retrouvé la sienne (Fig. 9F).If the lock is placed vertically as shown in Fig. 1, the roller 12 is then caused to fall by gravity into the bottom of the notch 20 to find itself again in its retracted position. If the lock occupies a different position, this movement can be caused by a spring similar to spring 55 (then absent) but acting in the opposite direction. However, in any event and regardless of the position of the lock, the roller 12 is returned to its retracted position as soon as the lever 9 has returned to its initial position, which occurs very quickly. after a complete revolution of the cam 38, that is to say before the bolt has found its own (Fig. 9F).

La Fig. 11 montre un schéma électrique d'un exemple de circuit de commande du moteur 33. Sur cette Fig., on voit que la serrure peut être commandée par un simple bouton-poussoir 45 qui est monté entre l'un des pôles d'une source d'alimentation et un montage 46 d'arrêt instantané du moteur 33. Le bouton-poussoir 45 est monté en parallèle sur l'interrupteur 42 faisant office de contact de maintien. Le montage 46 comporte un transistor 47 de court-circuit de l'induit du moteur 33. Son collecteur est relié avec l'une des bornes du moteur au pôle opposé de la source d'alimentation, tandis que par son émetteur est raccordé entre la cathode d'une diode 48 et la borne opposée de l'induit du moteur. La base du transistor est reliée par une résistance R1 à l'anode de la diode 48 et au montage en parallèle du bouton-poussoir 45 et de l'interrupteur 42. Une résistance R2 relie le collecteur du transistor 47 à l'anode de la diode 48.Fig. 11 shows an electrical diagram of an example of a motor control circuit 33. In this FIG., It can be seen that the lock can be controlled by a simple push button 45 which is mounted between one of the poles of a source supply and an assembly 46 for instantaneous stop of the motor 33. The push-button 45 is mounted in parallel on the switch 42 acting as a holding contact. The assembly 46 comprises a short-circuit transistor 47 of the armature of the motor 33. Its collector is connected with one of the motor terminals to the opposite pole of the power source, while by its emitter is connected between the cathode of a diode 48 and the opposite terminal of the motor armature. The base of the transistor is connected by a resistor R1 to the anode of the diode 48 and to the parallel mounting of the push button 45 and of the switch 42. A resistor R2 connects the collector of the transistor 47 to the anode of the diode 48.

Lorsque le bouton-poussoir 45 est actionné, le moteur 33 est mis sous tension à travers la diode 48, le transistor 47 restant bloqué, car sa base et son émetteur sont au même potentiel. Le bouton-poussoir est aussitôt repris par le contact 42 car la came 39 oppose sa plage haute au poussoir 41 en raison de la rotation de la roue dentée 35. Lorsque celle-ci a presque achevé un tour, le poussoir 41 retrouve la plage basse de la came 39 et l'interrupteur 42 est ouvert. Le moteur 33 continuant à tourner par l'effet d'inertie devient générateur débloquant ainsi le transistor 47 qui devient alors un court-circuit pour ce générateur. Le moteur s'arrête donc en une fraction de seconde calculée de telle manière par le choix des valeurs des composants que la came 38 se trouve exactement à sa position initiale. D'après le diagramme des forces de la Fig. 10, on voit que l'ouverture de la serrure nécessite une force qui n'est autre que la force de frottement entre la came 38 et la surface extérieure convexe 32 du levier de manceuvre. Le galet 12 n'a à franchir aucun obstacle ni pendant le verrouillage, ni pendant le déverrouillage. Le moteur électrique 33 peut donc être d'une puissance très faible lui permettant d'être inséré dans le boîtier de la serrure. En outre, on voit que le galet 12 n'est sous contrainte que dans la position de verrouillage de la serrure qui est statique. Au cours de ses mouvements, il se déplace sans être sollicité contre une surface quelconque ce qui en réduit l'usure à une valeur minimale. Il est de même des surfaces profilées du pêne d'une part et du levier de manoeuvre d'autre part.When the push button 45 is actuated, the motor 33 is energized through the diode 48, the transistor 47 remaining blocked, since its base and its emitter are at the same potential. The push button is immediately taken up by the contact 42 because the cam 39 opposes its high range to the push button 41 due to the rotation of the toothed wheel 35. When the latter has almost completed one revolution, the push button 41 returns to the low range of cam 39 and switch 42 is open. The motor 33 continuing to rotate by the inertia effect becomes a generator thus unlocking the transistor 47 which then becomes a short circuit for this generator. The engine therefore stops in a fraction of a second calculated in such a way by the choice of the values of the components that the cam 38 is exactly in its initial position. According to the force diagram of FIG. 10, it can be seen that the opening of the lock requires a force which is none other than the friction force between the cam 38 and the convex outer surface 32 of the lever. The roller 12 does not have to cross any obstacle either during locking or during unlocking. The electric motor 33 can therefore be of very low power allowing it to be inserted into the lock housing. In addition, it can be seen that the roller 12 is under stress only in the locking position of the lock which is static. During its movements, it moves without being pressed against any surface which reduces wear to a minimum value. It is the same with the profiled surfaces of the bolt on the one hand and of the operating lever on the other hand.

Les Fig. 12 et 13 montrent une variante de la serrure dans laquelle les deux plaquettes 15 et 16 sont solidaires l'une de l'autre avec une possibilité d'un léger débattement angulaire. A cet effet, elles sont reliées l'une à l'autre par une entretoise 49 qui par une première déformation 50 est rigidement fixée à la plaquette 16, tandis qu'une seconde déformation 51 est engagée avec un léger jeu dans une lumière 52 en forme de haricot ménagée dans l'autre plaquette 15. L'entretoise est montée oscillante sur la broche 8.Figs. 12 and 13 show a variant of the lock in which the two plates 15 and 16 are integral with one another with the possibility of a slight angular movement. To this end, they are connected to each other by a spacer 49 which by a first deformation 50 is rigidly fixed to the plate 16, while a second deformation 51 is engaged with a slight play in a slot 52 in bean shape provided in the other plate 15. The spacer is mounted to oscillate on the spindle 8.

Un ressort hélicoïdal 53 est monté autour de la broche en étant accroché par ses extrémités respectivement dans les plaquettes 15 et 16 afin de les solliciter autour de la broche 8 dans le sens des flèches F6.A helical spring 53 is mounted around the spindle while being hooked by its ends respectively in the plates 15 and 16 in order to urge them around the spindle 8 in the direction of the arrows F 6 .

Lorsque la serrure des Fig. 12 et 13 est verrouillée (comme représenté), les plaquettes 15 et 16 sont dans une position angulaire relative telle que la déformation 51 se trouve appuyée contre l'une des extrémités de la lumière 52, le ressort 53 étant tendu. Dès que le levier 9 est écarté de la plaquette 15 pour le déverrouillage, la gâche 5 est libérée et la plaquette 16 est tournée par rapport à la plaquette 15, tandis que le pêne 7 dans son ensemble tourne autour de la broche 8. Il en résulte que le galet 12 reçoit une impulsion de mouvement qui le dégage rapidement de sa position de verrouillage et le précipite dans le fond de l'encoche 20.When the lock of Figs. 12 and 13 is locked (as shown), the plates 15 and 16 are in a relative angular position such that the deformation 51 is pressed against one of the ends of the slot 52, the spring 53 being tensioned. As soon as the lever 9 is moved away from the plate 15 for unlocking, the keeper 5 is released and the plate 16 is turned relative to the plate 15, while the bolt 7 as a whole rotates around the spindle 8. It As a result, the roller 12 receives an impulse of movement which quickly releases it from its locking position and precipitates it into the bottom of the notch 20.

La Fig. 12A montre une autre variante dans laquelle il est prévu un galet 12A à gorge circulaire 54 dans laquelle peut pénétrer un ressort 55 en fil le sollicitant vers le fond de l'encoche 20. Ce ressort 55 est fixé dans la plaquette 16 en s'étendant à peu près perpendiculairement à la surface plane -20c de l'encoche 20, et est tendu lorsque le galet 12A se trouve dans sa position de verrouillage «second cran». Par cette variante, on vise à obtenir le même résultat que dans la variante des Fig. 12 et 13 à savoir de garantir que le galet 12A soit placé au fond de l'encoche 20 dès que le levier 9 a opéré le déverrouillage.Fig. 12A shows another variant in which there is provided a roller 12A with a circular groove 54 into which a spring 55 of wire can penetrate urging it towards the bottom of the notch 20. This spring 55 is fixed in the plate 16 extending roughly perpendicular to the flat surface - 20c of the notch 20, and is tensioned when the roller 12A is in its "second notch" locking position. By this variant, we aim to obtain the same result as in the variant of FIGS. 12 and 13, namely to guarantee that the roller 12A is placed at the bottom of the notch 20 as soon as the lever 9 has operated the unlocking.

Les Fig. 14 et 15 illustrent une autre variante dans laquelle la serrure suivant l'invention comporte un pêne 7A réalisé en une seule pièce à partir d'une plaquette unique à deux plateaux 56 et 57 disposés parallèlement et réunis ensemble par une partie de jonction 58 perpendiculaire à ces plateaux. L'ensemble est monté oscillant sur la broche 8 qui traverse le plateau 56. Ce dernier présente la portion fourchue destinée à chevaucher la gâche 5 pour le verrouillage, tandis que le plateau 57 comporte l'encoche 20.Figs. 14 and 15 illustrate another variant in which the lock according to the invention comprises a bolt 7A produced in one piece from a single plate with two plates 56 and 57 arranged in parallel and joined together by a joining part 58 perpendicular to these trays. The assembly is mounted oscillating on the spindle 8 which crosses the plate 56. The latter has the forked portion intended to overlap the keeper 5 for locking, while the plate 57 comprises the notch 20.

La variante comporte également un organe de blocage 12B qui est ici formé par une bille sphérique.The variant also includes a blocking member 12B which is here formed by a spherical ball.

Le fonctionnement de cette variante est identique à celui du mode de réalisation représenté sur les Fig. 1 à 8.The operation of this variant is identical to that of the embodiment shown in FIGS. 1 to 8.

La Fig. 16 représente une autre variante dans laquelle la serrure comporte un organe de blocage 12 constitué par un bloc en forme de parallélépipède rectangle. Dans ce cas, le levier de manoeuvre 9 comporte des crans 30A et 31A en forme de V, tandis que l'encoche 20A est délimitée par deux surfaces 20A-a et 20A-b mutuellement perpendiculaires.Fig. 16 shows another variant in which the lock comprises a blocking member 12 constituted by a block in the form of a rectangular parallelepiped. In this case, the operating lever 9 has notches 30A and 31A in the form of a V, while the notch 20A is delimited by two mutually perpendicular surfaces 20A-a and 20A-b.

Selon la variante de la Fig. 17, l'organe de blocage 12D est en forme de pion cylindrique épaulé qui est monté dans un logement 20B prévu dans la plaquette 16. Ce pion est sollicité vers l'extérieur par un ressort 59. Dans ce cas, le levier de manoeuvre 9 comporte une seule encoche 60 montée, de préférence mobile en translation au lieu d'être pivotant (voir les flèches F7).According to the variant of FIG. 17, the blocking member 12D is in the form of a shouldered cylindrical pin which is mounted in a housing 20B provided in the plate 16. This pin is biased towards the outside by a spring 59. In this case, the operating lever 9 has a single notch 60 mounted, preferably mobile in translation instead of being pivoting (see arrows F 7 ).

Claims (19)

1. A latch, in particular for a motor vehicle door, of the type comprising, on one hand, a case (1, 2) for the latch mechanism (6) and, on the other hand, a keeper (5) movable relative to this case (1, 2), the latch mechanism (6) being provided with a bolt (7, 7A) pivotable about a pin (8) which is perpendicular to the direction of movement of the keeper (5) with which this bolt cooperates by a fork-shaped portion (24), and a movable operating lever (9) of the latch which is adapted to allow the rotation of the bolt in the direction for releasing the keeper through the medium of a locking element (12 to 12D) interposed between the bolt and the operating lever, the locking element (12 to 12D) being movably mounted in one of two members (7; 7A, 9) formed by the bolt and the operating lever between a projecting position for interconnecting the members and a retracted position for allowing the free movement of rotation of the bolt relative to the lever, the second of the members comprising for the interconnection at least one notch (30, 31; 30A, 31A, 60) in which the locking (12 to 12D) is adapted to penetrate and the two members being so mounted as to be movable away from each other for causing the locking element to move out of the notch provided in said second member, characterised in that said locking element (12 to 12D) is mounted in a cavity (20; 20A; 20B) formed in the first (7; 7A) of said members and being defined by a profiled edge (29) of the latter, which cavity is, in an unlocked position of the latch, closed by a portion of a profiled edge (28) of the second (9) of said members in facing relation to the profiled edge of the first member and having said notch (30, 31; 30A, 31A; 60).
2. A latch according to claim 1, characterised in that the profiled edges (28, 29) both have a general arc of a circle shape.
3. A latch according to either claim 1 or 2, characterised in that said locking element (12; 12A) is a roller of cylindrical shape.
4. A latch according to either claim 1 or 2, characterised in that said locking element (12B) is a ball of spherical shape.
5. A latch according to claim 1 or 2, characterised in that said locking element (12C) is a block having a generally polygonal shape and preferably the shape of a rectangular parallelepiped.
6. A latch according to claim 1 or 2, characterised in that said locking element (12D) has the shape of a cylindrical stud.
7. A latch according to claim 3 or 4, characterised in that the portion of the profiled edge (29) of said first member (7; 7A) defining said cavity comprises at the entrance of this cavity projections (20a and 20d) adapted to retain the locking element (12, 12A) in this cavity, and between these projections extends a portion of a rectilinear surface (20C) acting as a sliding surface for the locking element and a concave portion whose radius is less than the radius of the locking element.
8. A latch according to any one of the claims 3, 4 and 7, characterised in that the notch or notches (30, 31 ) of said second member (9) have an arc of a circle shape and preferably immediately adjacent to each other.
9. A latch according to claim 5, characterised in that the portion of the profiled edge of said first member (7) defining said cavity comprises two planar surfaces (20A-a; 20A-b) making a given angle therebetween equal to the angle at the apex of the polygon of the locking element and there is provided at the outer end of one of these surfaces a lug for retaining the locking element.
10. A latch according to any one of the claims 1 to 9, characterised in that the first element is the bolt (7) of the latch and the second member is an operating lever (9) mounted in the case (1, 2) to pivot about a pin parallel to that of the bolt.
11. A latch according to claim 10, characterised in that said operating lever (9) is provided with a spring (25) biasing it in a direction which moves it away from said bolt (7) and it cooperates with a cam operating device (11) temporarily allowing the movement of the lever upon unlocking the latch so as to release said locking element.
12. A latch according to claim 11, characterised in that the cam operating device comprises a gear wheel (37) adapted to be driven by an electric motor (33) and provided with a cam (38) which is adapted to constantly maintain the profiled edge (29) of the operating lever (9) in the vicinity of the conjugate profiled edge (28) of the bolt in opposition to the action of said spring (25) except during the unlocking stage of the latch.
13. A latch according to claim 12, characterised in that said electric motor (11) is supplied with power through a maintaining contact (42) connected in parallel to an unlocking control button (45), this maintaining contact being closed during the rotation of said gear wheel and opened when said cam (38) maintains the operating lever (5) in the vicinity of the bolt (7).
14. A latch according to claim 13, characterised in that the electric motor (11) is supplied with power through a control circuit (46) which short- circuits its armature winding when the latter is not supplied with power.
15. A latch according to any one of the claims 10 to 14, characterised in that said bolt (7) is provided with a spring (22) so mounted as to bias it to its locking position and the bolt comprises a nose portion (23) adapted to limit the travel of the bolt in the opening direction by bearing against a fixed abutment (lever 9).
16. A latch according to any one of the claims 10 to 15, characterised in that the bolt is made from two parallel plates (15, 16) rotatively mounted on the pin (8) of the bolt with interposition of a spacer member (17) and one of the plates has said fork-shaped portion (24) and the other said profiled edge (29).
17. A latch according to claim 16, characterised in that said plates (15, 16) are angularly movable relative to each other in opposition to the action of a spring which biases them in opposite directions, it being understood that the plate carrying the fork-shaped portion (24) is biased in the direction for unlocking the latch.
18. A latch according to claim 6, characterised in that said cylindrical stud (12d) is slidably mounted in the cavity (20B) of said first member (7), it being biased outwardly of the latter by a resiliently yieldable element (59).
19. A latch according to any one of the claims 3 to 5, characterised in that a resiliently yieldable element (55) is provided in said cavity (20) of the first member for biasing said locking element to its position in which it is retracted within said member (7).
EP82402273A 1981-12-22 1982-12-13 Vehicle door lock Expired EP0082761B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8123916A FR2518620A1 (en) 1981-12-22 1981-12-22 PIVOTING LOCK, IN PARTICULAR FOR A MOTOR VEHICLE
FR8123916 1981-12-22

Publications (2)

Publication Number Publication Date
EP0082761A1 EP0082761A1 (en) 1983-06-29
EP0082761B1 true EP0082761B1 (en) 1986-03-12

Family

ID=9265255

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82402273A Expired EP0082761B1 (en) 1981-12-22 1982-12-13 Vehicle door lock

Country Status (6)

Country Link
US (1) US4569544A (en)
EP (1) EP0082761B1 (en)
DE (1) DE3269903D1 (en)
ES (1) ES284384Y (en)
FR (1) FR2518620A1 (en)
YU (1) YU46129B (en)

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Also Published As

Publication number Publication date
YU46129B (en) 1993-05-28
FR2518620A1 (en) 1983-06-24
EP0082761A1 (en) 1983-06-29
YU281682A (en) 1985-03-20
DE3269903D1 (en) 1986-04-17
ES284384Y (en) 1986-08-01
FR2518620B1 (en) 1984-02-24
ES284384U (en) 1986-01-01
US4569544A (en) 1986-02-11

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