EP0151081B1 - Safety lock, fitted to prevent its fraudulent opening - Google Patents

Safety lock, fitted to prevent its fraudulent opening Download PDF

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Publication number
EP0151081B1
EP0151081B1 EP85400150A EP85400150A EP0151081B1 EP 0151081 B1 EP0151081 B1 EP 0151081B1 EP 85400150 A EP85400150 A EP 85400150A EP 85400150 A EP85400150 A EP 85400150A EP 0151081 B1 EP0151081 B1 EP 0151081B1
Authority
EP
European Patent Office
Prior art keywords
finger
rotor
stator
fixed
bolt
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
EP85400150A
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German (de)
French (fr)
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EP0151081A3 (en
EP0151081A2 (en
Inventor
Jean Dupart
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to AT85400150T priority Critical patent/ATE38536T1/en
Publication of EP0151081A2 publication Critical patent/EP0151081A2/en
Publication of EP0151081A3 publication Critical patent/EP0151081A3/en
Application granted granted Critical
Publication of EP0151081B1 publication Critical patent/EP0151081B1/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
    • E05B17/00—Accessories in connection with locks
    • E05B17/04—Devices for coupling the turning cylinder of a single or a double cylinder lock with the bolt operating member
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/0054—Fraction or shear lines; Slip-clutches, resilient parts or the like for preventing damage when forced or slammed
    • E05B17/0058—Fraction or shear lines; Slip-clutches, resilient parts or the like for preventing damage when forced or slammed with non-destructive disengagement

Definitions

  • the subject of the present invention is a lock with an added safety block, arranged to prevent its fraudulent use.
  • the lock targeted by the invention is of the type with barrel comprising a rotor mounted in a stator housed in a cover fixed to a catch, the rotor having a housing capable of receiving a key and being provided at its end opposite to the opening d entry of the key, of a part integral with the rotor and provided with a finger intended to drive a bolt when the rotor and said part are rotated by the key.
  • a lock corresponding to the preamble of claim 1 is known from FR-A-1 046 542.
  • the invention therefore applies to cylinder safety blocks comprising an inner rotor or cylinder and an outer stator or cylinder.
  • the two cylinders can be concentric or non-concentric.
  • the invention is also applicable to pump safety blocks.
  • the rotor and the stator of the safety blocks are, as a general rule, made integral by means of a set of pins or flakes placed perpendicular to the axis of rotation of the rotor and bearing on both the rotor and the stator.
  • the introduction of the right key moves the pins and the flakes according to the right combination, so as to allow the rotation of the rotor inside the stator.
  • springs return the pins or the glitter to the locked position.
  • the rear end of the rotor carries a transmission part provided with an eccentric finger relative to the axis of rotation of the rotor. This finger enters notches made in the bolt of the lock to transform the rotational movement of the rotor into a translational movement of the bolt, in known manner.
  • Fraudulent opening of the reported safety block locks can be obtained by non-destructive or destructive means.
  • Non-destructive means require, among other things, the application of a torque to the rotor by means of an appropriate hook, also called a driver, introduced in place of the key while another suitable tool tries to place the pins in position for passage by feel.
  • an appropriate hook also called a driver
  • the size of a dummy key necessitates exerting a torque on the rotor by manipulating a key blank in safety, and gradually cutting it thanks to the fingerprints left by the pins.
  • the patent FR-A-1 046 542 proposed to make the stator in two end-to-end parts and enjoying a certain relative play in rotation so that, after shearing of the locking pins, the torque transmitted to the one of the parts produces a weak pivoting and uncoupling with the active organs of the lock. The lock is still destroyed but cannot be opened.
  • the invention aims to prevent any possibility of fraudulent opening of the lock using one of the above means.
  • the safety lock of the type according to the preamble of claim 1 comprises means for rotating the stator integrally with the rotor under the action of a false key or another tool in the case an attempt to fraudulently open the lock, this separation thereby triggering a displacement of the axis of rotation of the finger secured to the rotor, or a withdrawal in axial translation of this finger relative to the bolt in order to prevent any actuation of the bolt by introduction of the false key or other tool, the stator being connected to the cover by an elastic coupling member erasable under the effect of a torque between said stator and said cover.
  • the invention allows on the one hand to disengage the stator under the action of an abnormal torque, and on the other hand to modify the trajectory of the bolt drive finger, in order to prevent it from s '' Engage in the notches of the latch in the event of fraudulent manipulation.
  • This trajectory can be modified either by reducing the angular amplitude of the movement of the finger by transverse movement of the axis of rotation of the finger, or by axial translation of the finger to position it outside the plane of movement of the bolt.
  • this lock comprises a barrel consisting of a rotor 1 of axis XX and a stator 2 offset from to the rotor 1, the stator 2 being housed in a cover 3 fixed to a lock 6 closing the lock housing, by means of screws such as 7.
  • the rotor 1 has a cylindrical internal housing 16 capable of receiving a key 8, and is provided, at its end opposite to the entry opening of the key 8 with a part 9 made integral with the rotor 1 by means of an axial screw 9a, this part 9 being provided with a longitudinal finger 10, parallel at axis XX.
  • the finger 10 is intended to drive a bolt 11 in translation by introduction into the notches 11 'of the latter, in a manner known per se, and this in order to open or close the lock according to the direction of rotation of the rotor 1, piece 9 and finger 10.
  • the lock comprises means for rotating the stator 2 integrally with the rotor 1, under the action of a false key or another tool in order to fraudulently open the lock, and to trigger thereby a displacement of the axis of rotation of the finger 10, in order to prevent any actuation of the bolt 11 by introduction of the false key or other tool.
  • these safety means are constituted as follows: the stator 2 is normally kept fixed in rotation when the rotor 1 is itself driven in rotation by the normal key 8, at by means of a ball 4 housed in the wall of the cover 3, and held in abutment in a lateral notch 4a of the stator 2 by a spring 5 disposed in a transverse tubular projection 3a of the cover 3, contiguous to the plug 6.
  • the spring 5 takes support on a screw 15 screwed into the sleeve 3a in an adjustable manner, so that the ball 4 pushed by the spring 5 normally keeps the stator 2 fixed relative to the rotor 1, by clutching the stator 2 with the ball 4 engaged in the notch 4a.
  • the rotor 1 and the stator 2 are made integral by means of pins 12, 13 capable of sliding in corresponding transverse housings of the stator 2, under the action of springs thrust 14 arranged in these housings, in a manner known per se.
  • the rotor 1 and the stator 2 are not concentric, the axis of rotation Y-Y of the stator 2, parallel to X-X, being offset transversely relative to the latter.
  • the rotor 1 and the stator 2 are made integral by means of the pins 12, 13 pushed by the springs 14, the external pins 12 being stopped by a longitudinal projection (not shown), formed internally to the housing 16 of the rotor 1.
  • the correct key 8 is introduced into the rotor 1, it comes into the position illustrated in FIG. 1, in which its notches respectively control the position of the pins 12, 13; the junction between each pair of pins 12, 13 is made exactly at the junction surface of the rotor 1 and the stator 2, so that the rotor 1 can rotate inside the stator 2.
  • the finger 10 no longer rotates around the axis XX, but around the axis YY of the stator 2, so that its radius of rotation r around YY is markedly reduced compared to its normal radius of rotation, the axis of rotation YY of the stator 2 being by construction further from the bolt 11 than the axis XX.
  • the axis of the finger 10 could even at the limit be confused with the axis of rotation Y-Y.
  • the positioning of the stator 2 can be obtained by means other than the ball 4 and the spring 5, for example by a safety pin determined to break in the event of forced rotation.
  • a safety pin determined to break in the event of forced rotation.
  • the pawl 17 is provided with a boss 19 suitable for come and engage in a complementary notch 21 formed in a disc 23 and pressing on the top of a plate 22 capable of sliding on the disc 23 fixed to the stator 2 coaxially with the latter, on the side of the bolt 6 facing the bolt 11
  • the plate 22 is guided in its sliding by four feet or pins 24 fixed on the disc 23, under the action of a tension spring 25 attached to the disc 23 at 26, when the boss 19 has come out of the notch 21 , in which it tends to be normally held by a spring 27 for returning the pawl 17, attached to one end of the latter opposite its axis of rotation 16.
  • the sliding plate 22 has a central recess 22a for accommodating a member there 28 fixed to rotor 1 by screws 29.
  • the member 28 and the edge in rega rd of the recess 22a are provided with means for securing the member 28 and the plate 22 in rotation in one piece with the rotor 1, capable of coming into action when the plate 22 slides between the pins 24 under the action of the spring 25 from its position in Figure 6, when the boss 19 comes out of the notch 21.
  • these securing means consist of a stud 31 arranged on the edge of the recess 22a, and a conjugate mortise 32 of the member 28 (or vice versa).
  • the screws 29 also serve to fix the part 9 supporting the finger 10, to the member 28 and to the rotor 1 ( Figure 5).
  • the pawl 17 determines the position of the disc 23 by its boss 19 pressed into the notch 21 ( Figure 6), and at the same time the depression of the plate 22 by its top 22b with which this boss is in contact, so that the pin 31 is distant from the mortise 32.
  • the use of the correct key allows under these conditions, the rotation of the rotor 1 only and the actuation of the bolt.
  • a disc 23 carrying a notch 21 is secured to the stator 2 by means of the screws 30, and the pawl 17 recalled by the spring 27 maintains the stator 2 in the normal position, disengageably.
  • a circular plate 60 is housed inside the guide 40 coaxially with the rotor 1, which is accessible through a hole 33 of the disc 23.
  • An assembly consisting of a washer 34, a spacer 35, a slide is fixed on the rotor 1 circular 36 sized to be able to slide inside the guide 40, and the plate 60, and this by means of an axial screw 37 passing through the washer 34, the spacer 35, an elongated diametrical lumen 38 of the slide 36, a hole central of the plate 60, the screw 37 being introduced into the hole 33 of the rotor 1.
  • the plate 60 is provided with a lug 39 for guiding which can penetrate into a hole 41 of the rotor 1, to ensure the positioning of the assembly .
  • the plate 60 is equipped with two feet 42 projecting towards the slide 36 in the elongated opening 38 from which they are introduced as well as, placed on either side of the feet 42, stops 43 which engage in corresponding housings 44 formed in the slide 36 parallel to its lumen 38 on each side of the latter.
  • Two springs 45 are placed in the lateral housings 44 of the slide 36, bearing on the feet 43, and elastically urge the slide 36 towards the position of the latter where it is stopped by one of the stops 42 (FIG. 10), when the pawl 17 is released from the notch 21.
  • the plate 9 for supporting the finger 10 is fixed to the slide 36 by means of spacers 46 making it possible to compensate for the thickness of the washer 34 and that of the head of the screw 37, these spacers 46 receiving screws 47 for fixing the plate 9 to the slide 36.
  • the rotor 1 In the case where the key is correctly inserted only after having started to rotate the stator 2, the rotor 1 remains integral with the stator 2 which cannot rotate between the lateral branches of the guide 40 (FIG. 10).
  • the fourth embodiment of the lock illustrated in Figures 11 and 12, applicable to all securities to thwart fraudulent operations, allows to cause the longitudinal movement on its axis of the plate 9 supporting the finger 10 so as to move the finger 10 away from the movement plan of the bolt.
  • the disc 48 integral with the stator 2 has a central recess traversed by a guide 49 fixed concentrically with the rotor 1, and in which longitudinal grooves 51 are arranged.
  • the guide 49 internally receives a part 52 provided with lateral lugs 53 engaged inside the grooves 51, so that the part 52 can slide axially in the guide 49.
  • To the part 52 is fixed a plate 54 constituting a pulley of axis XX, and which carries the control finger 10 of the bolt .
  • the part 52 can slide in the guide 49 longitudinally without the possibility of angular offset.
  • the invention provides means for automatically moving in axial translation the part 52 and consequently the finger 10 in the direction of the rotor 1, when as a result of an irregular attempt to open the lock, the stator 2 and the disc 48 are rotated with the rotor 1, and that the boss 19 of the pawl 17 comes out of its notch of the disc 48.
  • these means consist of a plate 55 articulated on a support 56 fixed to the pin 6, for example by means of a screw 50 engaged in this support 56 and passing through the plate 55.
  • the latter has in its middle part a recess 57 corresponding to the diameter of the pulley 54 measured at the bottom of the groove, the pulley 54 being inserted in this obviously.
  • the plate 55 is cut out in an appropriate manner, as illustrated in Figure 13, where sees that it has the recess 57 communicating with the outside of the plate by a cutout 58 for passage of the pulley 54.
  • the pulley 54 can be moved in translation by an angular movement of the plate 55.
  • the latter is provided with a boss 59 capable of coming to bear on an associated lug 61 projecting from the disc 48 ( Figure 11), when the boss 19 of the pawl 17 is engaged in its notch 21.
  • the rotor can rotate indefinitely without the finger 10 can ever reach the notch of the bolt. It then suffices to remove the key in part and to rotate the rotor-stator assembly until the pawl 17 engages in the notch 21 of the disc 48, then to insert the key correctly to regain operation normal.
  • the lock is provided with a disc 63 fixed coaxially to the stator 2 on the side of the bolt 6 facing the bolt, and with a hollow cylindrical cam 64 integral with the disc 63, in which several notches 65 are formed, the cam 64 being concentric to the rotor 1.
  • a part 66 is slidably mounted axially in a guide 67 fixed to the end of the rotor 1 by screws such as 68, and is secured to a cam follower 69 carrying as many teeth 71 as the cam 64 has d 'notches 65.
  • the number of teeth 71 and notches 65, as well as their position are such that there is penetration of teeth 71 in the notches 65 only for a single determined angular position corresponding to the waiting position of safety.
  • the plate 72 supporting the latch drive finger 10 is integral with the cam follower 69, forming with the latter and the part 66, which can slide in the grooves 51 of the guide 67 by guide pins 53, a set monobloc movable in axial translation along the axis XX, when it rotates relative to the cam 64.
  • a plate 73 parallel to the plug 6, is pierced with a central orifice 74 allowing the passage of the support plate 72 of the finger 10, and is elastically returned to the plug 6 by tension springs 75.
  • a pawl 17 carries a boss 19 which can fit into a notch 21 in the disc 63.
  • the cam 64 and the cam follower 71 are nested one inside the other under the action of the plate 73 (FIG. 15), the teeth 71 being driven into the complementary notches 65.
  • the rotation of the rotor 1 under the action of the right key causes the rotation of the cam follower 69 relative to the cam 64 immobilized by the pawl 17.
  • the cam follower 69 can only rotate after having passed the notches 65, which causes its longitudinal displacement at the same time as that of the support plate 72 and therefore of the finger 10, which is thus advanced towards the bolt in which it can mesh.
  • the angular position of the teeth 71 of the cam follower 69 is such that, apart from the initial position where the cam 64 and the cam follower 69 are nested, during the rotation there are always at least two teeth 71 in contact with the periphery of the cam 64.
  • these two teeth 71 must be substantially diametrically opposite, so as to favor the guiding of the part 66 in axial translation without rotation, in the guide 67, the insertion of which is relatively short to reduce the size of the lock.
  • the sixth embodiment of the lock according to the invention is applicable to collateral whose rotor 1 and stator 2 are eccentric, the pin 10 for driving the bolt moving longitudinally.
  • the disc 76 in which is formed the notch 21 cooperating with the pawl 17, is fixed to a cylindrical part 77 extending in the cover 3, and secured in rotation with the stator 2 by screws 83.
  • a axis 78 passes through the disc 76 as well as a housing of the part 77, this axis 78 being coaxial with the axis XX of the rotor 1 and comprising an end portion 78a mounted sliding inside the rotor 1.
  • This part 78a therefore constitutes a slide saying the profile 78b of the key 8, and therefore can only move longitudinally in the rotor 1, without angular displacement relative to the latter.
  • the end of the axis 78 opposite the slide 78a carries the support plate 79 ′ of the control finger 10.
  • the rotor 1 is retained inside the stator 2 by a flange 81 at the inlet end, and by a circlip 82 at its other end.
  • a helical compression spring 84 mounted coaxially with the axis 78, bears on the disc 76 and exerts a thrust on a flange 85 secured to the axis 78. Therefore, under the thrust of the spring 84, the end 78a is slidably engaged in the rotor 1 until the flange 85 abuts against the end of the rotor, the support plate 79 then occupying position 79a, retracted with respect to the bolt, and shown in broken lines.
  • the plate 79 is provided with a flange 86 coaxial with the axis XX, for example of circular shape, and a screen 87 is kept fixed and parallel to the block 6, at a determined spacing from the latter, by spacers of support 88.
  • the screen 87 is pierced with a hole 89, circular if the flange 86 is circular, and of a diameter allowing the passage of the latter on either side of the screen 87.
  • the correct key 8 pushes the assembly formed by the slide 78a, the axis 78, the plate 79 and the finger 10, by compressing the spring 84, and this from the rest position of the plate 79a, to the position in solid lines, in which the finger 10 is placed on the path of the bolt and can actuate it.
  • the spring 84 brings the assembly back, and the finger 10 is found out of reach of the bolt.
  • stator 2 In the event of stator 2 starting to rotate due to insufficient insertion of the key 8, then insertion during rotation, there would be a risk of blocking the mechanism by faulty engagement of the finger 10 in a notch 11 ′ of the bolt. This risk is precisely eliminated thanks to the collar 86 and the screen 87. In fact, in normal use with the correct key 8, the collar 86 crosses the screen 87 through the hole 89 during its translational movement ( Figure 18 ). On the other hand, in the event of rotation of the stator 2, the flange 86 rotates around the axis YY, and is therefore first off-center, while remaining in its initial retracted position (corresponding to the position 79a of the plate), and this until the key has been fully pressed.
  • the flange 86 is therefore in the position shown in FIG. 19, offset from the opening 89, so that when the key is fully depressed, the axis 78 pushes the flange 86 into abutment against the screen 87, the axis XX of the rotor 1 and of the flange 86 having described an arc of the circle 90.
  • the screen 87 therefore prevents the key from being fully depressed, which makes it possible to complete the turn at the end of which the key 8 can be pressed, the safety can then operate normally.

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  • Lock And Its Accessories (AREA)
  • Dowels (AREA)
  • Emergency Lowering Means (AREA)

Abstract

1. A safety lock comprising a rotor (1) in a stator (2) housed in a hood (3) fixed to a capping plate (6), the rotor (1) having a housing (16) able to receive a key (8) and being provided, at its end opposite to the opening for the entry of the key, with a part (9, 54, 72, 79) fixed to the rotor (1) and equipped with a finger (10) designed to move a bolt (11) when the rotor (1) and the said part are rotated by the key, characterized in that it comprises means to entrain the stator (2) integrally in rotation with the rotor (1) as a result of the action of an incorrect key or of another tool in the case of an attempted fraudulent opening of the lock, this disruption as a result initiating a displacement of the axis of rotation of the finger (10) fixed to the rotor (1), or a withdrawal in axial translation of this finger relative to the bolt (11), in order to prevent any operation of the bolt (11) through the introduction of the incorrect key or other tool, the stator (2) being connected to the hood (3) by an elastic coupling element (4, 17) which can be overcome by the action of a torque between the said stator (2) and the said hood (3).

Description

La présente invention a pour objet une serrure à bloc de sûreté rapporté, agencée pour empêcher son utilisation frauduleuse.The subject of the present invention is a lock with an added safety block, arranged to prevent its fraudulent use.

La serrure visée par l'invention est du type avec barillet comportant un rotor monté dans un stator logé dans un capot fixé à un foncet, le rotor présentant un logement susceptible de recevoir une clé et étant pourvu à son extrémité opposée à l'ouverture d'entrée de la clé, d'une pièce solidaire du rotor et munie d'un doigt destiné à entraîner un pêne lorsque le rotor et ladite pièce sont mis en rotation par la clé. Une telle serrure correspondant au préambule de la revendication 1 est connue de FR-A-1 046 542.The lock targeted by the invention is of the type with barrel comprising a rotor mounted in a stator housed in a cover fixed to a catch, the rotor having a housing capable of receiving a key and being provided at its end opposite to the opening d entry of the key, of a part integral with the rotor and provided with a finger intended to drive a bolt when the rotor and said part are rotated by the key. Such a lock corresponding to the preamble of claim 1 is known from FR-A-1 046 542.

L'invention s'applique donc aux blocs de sûreté à cylindre comportant un rotor ou cylindre intérieur et un stator ou cylindre extérieur. Les deux cylindres peuvent être concentriques ou non concentriques. L'invention est également applicable aux blocs de sûreté à pompe.The invention therefore applies to cylinder safety blocks comprising an inner rotor or cylinder and an outer stator or cylinder. The two cylinders can be concentric or non-concentric. The invention is also applicable to pump safety blocks.

Dans tous les cas, sous l'action de la bonne clé, le rotor tourne dans le stator, ce qui permet d'actionner l'organe de manoeuvre du pêne.In all cases, under the action of the correct key, the rotor turns in the stator, which makes it possible to actuate the maneuver of the bolt.

On sait que dans les serrures du type en cause, le rotor et le stator des blocs de sûreté sont, en règle générale, rendus solidaires au moyen d'un ensemble de goupilles ou de paillettes placées perpendiculairement à l'axe de rotation du rotor et prenant appui à la fois sur le rotor et le stator. L'introduction.de la bonne clé déplace les goupilles et les paillettes selon la bonne combinaison, de manière à permettre la rotation du rotor à l'intérieur du stator. Au retrait de la clé, des ressorts replacent les goupilles ou les paillettes .en position de verrouillage.It is known that in locks of the type in question, the rotor and the stator of the safety blocks are, as a general rule, made integral by means of a set of pins or flakes placed perpendicular to the axis of rotation of the rotor and bearing on both the rotor and the stator. The introduction of the right key moves the pins and the flakes according to the right combination, so as to allow the rotation of the rotor inside the stator. When the key is removed, springs return the pins or the glitter to the locked position.

L'extrémité arrière du rotor porte une pièce de transmission munie d'un doigt excentré par rapport à l'axe de rotation du rotor. Ce doigt pénètre dans des encoches pratiquées dans le pêne de la serrure pour transformer le mouvement de rotation du rotor en un mouvement de translation du pêne, de façon connue.The rear end of the rotor carries a transmission part provided with an eccentric finger relative to the axis of rotation of the rotor. This finger enters notches made in the bolt of the lock to transform the rotational movement of the rotor into a translational movement of the bolt, in known manner.

L'ouverture frauduleuse des serrures à bloc de sûreté rapportés peut être obtenue par des moyens non destructifs ou destructifs.Fraudulent opening of the reported safety block locks can be obtained by non-destructive or destructive means.

Les moyens non destructifs nécessitent entre autres, l'application d'un couple de rotation sur le rotor au moyen d'un crochet approprié, également appelé entraîneur, introduit à la place de la clé pendant qu'un autre outil approprié essaie de placer les goupilles en position de passage par tâtage. De même, la taille d'une fausse clé nécessite d'exercer un couple de rotation sur le rotor en manipulant une ébauche de clé dans la sûreté, et à la tailler progressivement grâce aux empreintes laissées par les goupilles.Non-destructive means require, among other things, the application of a torque to the rotor by means of an appropriate hook, also called a driver, introduced in place of the key while another suitable tool tries to place the pins in position for passage by feel. Likewise, the size of a dummy key necessitates exerting a torque on the rotor by manipulating a key blank in safety, and gradually cutting it thanks to the fingerprints left by the pins.

Parmi les moyens destructifs, on connait la rotation forcée du barillet au moyen d'une forte pince, lorsque ce dernier est suffisamment en saillie par rapport au plan de la porte, ou au moyen d'une lame terminée par un bras de levier introduite à la place de la clé. Cette rotation forcée entraîne la destruction de la fixation du stator sur la serrure et par conséquent la rotation de l'ensemble du rotor et du stator lié par les goupilles, ce qui permet l'entraînement du pêne. Le perçage du stator au moyen d'un foret à métaux qui permet l'accès du pêne produit également un couple de rotation sur le stator.Among the destructive means, we know the forced rotation of the barrel by means of a strong clamp, when the latter is sufficiently projecting with respect to the plane of the door, or by means of a blade terminated by a lever arm introduced at the place of the key. This forced rotation causes the destruction of the stator attachment on the lock and therefore the rotation of the rotor assembly and the stator linked by the pins, which allows the bolt to be driven. The drilling of the stator by means of a metal drill which allows the access of the bolt also produces a torque on the stator.

Le brevet FR-A-1 046 542 a proposé de réaliser le stator en deux parties bout-à-bout et jouissant d'un certain jeu relatif en rotation de sorte que, après cisaillement des goupilles de verrouillage, le couple transmis à l'une des parties produise un faible pivotement et un désaccouplement d'avec les organes actifs de la serrure. La serrure est encore détruite mais ne peut être ouverte.The patent FR-A-1 046 542 proposed to make the stator in two end-to-end parts and enjoying a certain relative play in rotation so that, after shearing of the locking pins, the torque transmitted to the one of the parts produces a weak pivoting and uncoupling with the active organs of the lock. The lock is still destroyed but cannot be opened.

On voit que dans tous les cas d'ouverture frauduleuse, le stator est soumis à un couple de rotation.We see that in all cases of fraudulent opening, the stator is subjected to a torque.

L'invention a pour but d'empêcher toute possibilité d'ouverture frauduleuse de la serrure à l'aide de l'un des moyens ci-dessus.The invention aims to prevent any possibility of fraudulent opening of the lock using one of the above means.

Conformément à l'invention, la serrure de sûreté du type selon le préambule de la revendication 1 comprend des moyens pour entraîner en rotation le stator solidairement avec le rotor sous l'action d'une fausse clé ou d'un autre outil dans le cas d'une tentative d'ouverture frauduleuse de la serrure, cette désolidarisation déclenchant de ce fait un déplacement de l'axe de rotation du doigt solidaire du rotor, ou un retrait en translation axiale de ce doigt par rapport au pêne afin d'empêcher tout actionnement du pêne par introduction de la fausse clé ou autre outil, le stator étant relié au capot par un organe d'accouplement élastique effaçable sous l'effet d'un couple entre ledit stator et ledit capot.According to the invention, the safety lock of the type according to the preamble of claim 1 comprises means for rotating the stator integrally with the rotor under the action of a false key or another tool in the case an attempt to fraudulently open the lock, this separation thereby triggering a displacement of the axis of rotation of the finger secured to the rotor, or a withdrawal in axial translation of this finger relative to the bolt in order to prevent any actuation of the bolt by introduction of the false key or other tool, the stator being connected to the cover by an elastic coupling member erasable under the effect of a torque between said stator and said cover.

Ainsi, l'invention permet d'une part de débrayer le stator sous l'action d'un couple de rotation anormal, et d'autre part de modifier la trajectoire du doigt d'entraînement du pêne, afin de l'empêcher de s'engager dans les encoches du pêne en cas de manoeuvre frauduleuse. Cette trajectoire peut être modifiée soit par réduction de l'amplitude angulaire du mouvement du doigt par déplacement transversal de l'axe de rotation du doigt, soit par translation axiale du doigt pour le positionner en dehors du plan de déplacement du pêne.Thus, the invention allows on the one hand to disengage the stator under the action of an abnormal torque, and on the other hand to modify the trajectory of the bolt drive finger, in order to prevent it from s '' Engage in the notches of the latch in the event of fraudulent manipulation. This trajectory can be modified either by reducing the angular amplitude of the movement of the finger by transverse movement of the axis of rotation of the finger, or by axial translation of the finger to position it outside the plane of movement of the bolt.

Dans ces conditions, toute tentative d'ouverture irrégulière de la serrure par l'un des moyens rappelés ci-dessus est vouée à l'échec, le doigt d'entraînement du pêne étant automatiquement maintenu hors de portée du pêne.Under these conditions, any attempt to irregularly open the lock by one of the means recalled above is doomed to failure, the bolt drive finger being automatically kept out of the bolt's reach.

D'autres particularités et avantages de l'invention apparaîtront au cours de la description qui va suivre, faite en référence aux dessins annexés qui en illustrent plusieurs formes de réalisation à titre d'exemples non limitatifs :

  • - la Figure 1 est une vue en coupe axiale d'un premier mode de réalisation d'une serrure de sûreté selon l'invention, à goupilles et rotor excentré dont la sécurité est obtenue par réduction de l'amplitude du mouvement de rotation du doigt d'entraînement du pêne ;
  • - les Figures 2, 3 et 4 sont des vues en élévation partielle du pêne et de son doigt d'entraînement, prises dans un plan perpendiculaire à celui de la Figure 1, et représentant les diverses positions relatives possibles entre le doigt d'entraînement et les encoches du pêne dans la serrure de la Figure 1 ;
  • - la Figure 5 est une vue en coupe axiale d'un second mode de réalisation de la serrure selon l'invention, correspondant à une variante perfectionnée de la Figure 1 ;
  • - la Figure 6 est une vue en coupe transversale suivant VI-VI de la Figure 5, montrant des organes de sécurité supplémentaires de la serrure dans leur position normale correspondant à la position embrayée du stator et à la rotation du rotor sans entraînement du stator ;
  • - la Figure 7 est une vue analogue à la Figure 6 montrant la position des organes de sécurité de la serrure en cas d'entraînement anormal du stator en rotation ;
  • - la Figure 8 est une vue en perspective éclatée partielle d'une troisième forme de réalisation de la serrure de sûreté selon l'invention ;
  • - les Figures 9 et 10 sont des vues en élévation transversale des organes de sécurité de la serrure de la Figure 8, dans deux positions différentes de fonctionnement ;
  • - la Figure 11 est une vue en élévation longitudinale d'un quatrième mode de réalisation de la serrure selon t'inventions la pièce portant le doigt d'entraînement étant en position normale d'engrènement avec le pêne ;
  • - la Figure 12 est une vue analogue à la Figure 11, montrant le doigt d'entraînement et sa pièce de support escamotés axialement par rapport au pêne consécutivement à une tentative d'ouverture frauduleuse de la serrure ;
  • - la Figure 13 est une vue en élévation d'une plaque mobile assurant le déplacement du doigt d'entraînement du pêne dans la réalisation des Figures 11 et 12 ;
  • - la Figure 14 est une vue mi-coupe axiale, mi- élévation, avec arrachements, d'un cinquième mode de réalisation de la serrure selon l'invention, montrant la position des différents organes de la serrure lorsque le doigt est en position d'entraînement du pêne ;
  • - les Figures 15 et 16 sont des vues en perspective partielle à échelle agrandie par rapport à la Figure 14, des organes de sûreté de la serrure dans deux positions relatives différentes ;
  • - la Figure 17 est une vue en coupe axiale d'un sixième mode de réalisation de la serrure selon l'invention, le doigt étant en position normale d'entraînement du pêne ;
  • - la Figure 18 est une vue en élévation en bout suivant la flèche F de la Figure 16 ;
  • - la Figure 19 est une vue en coupe transversale analogue à la Figure 18, montrant comment la pièce de support du pêne peut être automatiquement stoppée dans son mouvement de translation axiale en direction du pêne, à la suite d'une fausse manoeuvre de la serrure avec une bonne clé.
Other particularities and advantages of the invention will appear during the description which follows, given with reference to the appended drawings which illustrate several embodiments thereof by way of nonlimiting examples:
  • - Figure 1 is an axial sectional view of a first embodiment of a safety lock according to the invention, with pins and eccentric rotor whose security is obtained by reduction tion of the amplitude of the rotary movement of the bolt drive finger;
  • - Figures 2, 3 and 4 are views in partial elevation of the bolt and its drive finger, taken in a plane perpendicular to that of Figure 1, and representing the various possible relative positions between the drive finger and the notches of the bolt in the lock of Figure 1;
  • - Figure 5 is an axial sectional view of a second embodiment of the lock according to the invention, corresponding to an improved variant of Figure 1;
  • - Figure 6 is a cross-sectional view along VI-VI of Figure 5, showing additional safety members of the lock in their normal position corresponding to the engaged position of the stator and the rotation of the rotor without driving the stator;
  • - Figure 7 is a view similar to Figure 6 showing the position of the safety members of the lock in the event of abnormal driving of the stator in rotation;
  • - Figure 8 is a partial exploded perspective view of a third embodiment of the security lock according to the invention;
  • - Figures 9 and 10 are views in transverse elevation of the safety members of the lock of Figure 8, in two different operating positions;
  • - Figure 11 is a longitudinal elevational view of a fourth embodiment of the lock according to the invention the part carrying the drive finger being in the normal position of engagement with the bolt;
  • - Figure 12 is a view similar to Figure 11, showing the drive finger and its support part retracted axially relative to the bolt following an attempt to fraudulently open the lock;
  • - Figure 13 is an elevational view of a movable plate ensuring the movement of the latch drive finger in the embodiment of Figures 11 and 12;
  • - Figure 14 is an axial mid-sectional view, mid-elevation, with cutaway, of a fifth embodiment of the lock according to the invention, showing the position of the various organs of the lock when the finger is in position d 'bolt drive;
  • - Figures 15 and 16 are partial perspective views on an enlarged scale with respect to Figure 14, of the safety devices of the lock in two different relative positions;
  • - Figure 17 is an axial sectional view of a sixth embodiment of the lock according to the invention, the finger being in the normal position for driving the bolt;
  • - Figure 18 is an end elevational view along arrow F of Figure 16;
  • - Figure 19 is a cross-sectional view similar to Figure 18, showing how the bolt support piece can be automatically stopped in its axial translational movement towards the bolt, following a false operation of the lock with a good key.

En se reportant à la Figure 1, on voit une première forme de réalisation de la serrure visée par l'invention, dans laquelle cette serrure comporte un barillet constitué d'un rotor 1 d'axe X-X et d'un stator 2 décentré par rapport au rotor 1, le stator 2 étant logé dans un capot 3 fixé à un foncet 6 fermant le boîtier de la serrure, au moyen de vis telles que 7. Le rotor 1 présente un logement interne cylindrique 16 susceptible de recevoir une clé 8, et est pourvu, à son extrémité opposée à l'ouverture d'entrée de la clé 8 d'une pièce 9 rendue solidaire du rotor 1 au moyen d'une vis axiale 9a, cette pièce 9 étant munie d'un doigt longitudinal 10, parallèle à l'axe X-X. Le doigt 10 est destiné à entraîner un pêne 11 en translation par introduction dans les encoches 11' de ce dernier, de manière connue en soi, et ce afin d'ouvrir ou de fermer la serrure selon le sens de rotation du rotor 1, de la pièce 9 et du doigt 10.Referring to Figure 1, we see a first embodiment of the lock covered by the invention, in which this lock comprises a barrel consisting of a rotor 1 of axis XX and a stator 2 offset from to the rotor 1, the stator 2 being housed in a cover 3 fixed to a lock 6 closing the lock housing, by means of screws such as 7. The rotor 1 has a cylindrical internal housing 16 capable of receiving a key 8, and is provided, at its end opposite to the entry opening of the key 8 with a part 9 made integral with the rotor 1 by means of an axial screw 9a, this part 9 being provided with a longitudinal finger 10, parallel at axis XX. The finger 10 is intended to drive a bolt 11 in translation by introduction into the notches 11 'of the latter, in a manner known per se, and this in order to open or close the lock according to the direction of rotation of the rotor 1, piece 9 and finger 10.

Suivant l'invention, la serrure comprend des moyens pour entraîner en rotation le stator 2 solidairement avec le rotor 1, sous l'action d'une fausse clé ou d'un autre outil en vue d'ouvrir frauduleusement la serrure, et pour déclencher de ce fait un déplacement de l'axe de rotation du doigt 10, afin d'empêcher tout actionnement du pêne 11 par introduction de la fausse clé ou autre outil.According to the invention, the lock comprises means for rotating the stator 2 integrally with the rotor 1, under the action of a false key or another tool in order to fraudulently open the lock, and to trigger thereby a displacement of the axis of rotation of the finger 10, in order to prevent any actuation of the bolt 11 by introduction of the false key or other tool.

Dans la forme de réalisation illustrée aux Figures 1 à 4, ces moyens de sûreté sont constitués de la manière suivante : le stator 2 est normalement maintenu fixe en rotation lorsque le rotor 1 est entraîné lui-même en rotation par la clé normale 8, au moyen d'une bille 4 logée dans la paroi du capot 3, et maintenue en appui dans une encoche latérale 4a du stator 2 par un ressort 5 disposé dans une saillie tubulaire transversale 3a du capot 3, contiguë au foncet 6. Le ressort 5 prend appui sur une vis 15 vissée dans le manchon 3a de manière réglable, de sorte que la bille 4 poussée par le ressort 5 maintient normalement le stator 2 fixe par rapport au rotor 1, par embrayage du stator 2 avec la bille 4 engagée dans l'encoche 4a. Par ailleurs, en l'absence de la clé d'ouverture 8, le rotor 1 et le stator 2 sont rendus solidaires au moyen de goupilles 12, 13 susceptibles de coulisser dans des logements correspondants transversaux du stator 2, sous l'action de ressorts de poussée 14 disposés dans ces logements, de façon connue en soi. Enfin, le rotor 1 et le stator 2 ne sont pas concentriques, l'axe de rotation Y-Y du stator 2, parallèle à X-X, étant décalé transversalement par rapport à celui-ci.In the embodiment illustrated in Figures 1 to 4, these safety means are constituted as follows: the stator 2 is normally kept fixed in rotation when the rotor 1 is itself driven in rotation by the normal key 8, at by means of a ball 4 housed in the wall of the cover 3, and held in abutment in a lateral notch 4a of the stator 2 by a spring 5 disposed in a transverse tubular projection 3a of the cover 3, contiguous to the plug 6. The spring 5 takes support on a screw 15 screwed into the sleeve 3a in an adjustable manner, so that the ball 4 pushed by the spring 5 normally keeps the stator 2 fixed relative to the rotor 1, by clutching the stator 2 with the ball 4 engaged in the notch 4a. Furthermore, in the absence of the opening key 8, the rotor 1 and the stator 2 are made integral by means of pins 12, 13 capable of sliding in corresponding transverse housings of the stator 2, under the action of springs thrust 14 arranged in these housings, in a manner known per se. Finally, the rotor 1 and the stator 2 are not concentric, the axis of rotation Y-Y of the stator 2, parallel to X-X, being offset transversely relative to the latter.

Cette serrure fonctionne de manière suivante :This lock works as follows:

En l'absence de la clé normale 8, le rotor 1 et le stator 2 sont rendus solidaires au moyen des goupilles 12, 13 poussées par les ressorts 14, les goupilles extérieures 12 étant arrêtées par une saillie longitudinale (non représentée), formée intérieurement au logement 16 du rotor 1. Lorsque la bonne clé 8 est introduite dans le rotor 1, elle vient dans la position illustrée à la Figure 1, dans laquelle ses encoches viennent respectivement commander la position des goupilles 12, 13 ; la jonction entre chaque couple de goupilles 12, 13 se fait exactement au niveau de la surface de jonction du rotor 1 et du stator 2, de sorte que le rotor 1 peut tourner à l'intérieur du stator 2. Au fur et à mesure de la rotation de la clé 8 à partir de cette position, la pièce 9 et son doigt 10 tournent autour de l'axe X-X du rotor 1, et le doigt 10 vient engrener avec le pêne 11 dans l'une des encoches 11' de ce dernier (Figure 2), déclenchant l'ouverture ou la fermeture de la serrure selon le sens de rotation autour de l'axe X-X. Après rotation de la clé 8 sur un tour complet, cette clé peut être retirée et les ressorts 14 repoussent les goupilles 12, 13 qui solidarisent à nouveau en rotation le rotor 1 et le stator 2, comme avant l'introduction de la clé 8.In the absence of the normal key 8, the rotor 1 and the stator 2 are made integral by means of the pins 12, 13 pushed by the springs 14, the external pins 12 being stopped by a longitudinal projection (not shown), formed internally to the housing 16 of the rotor 1. When the correct key 8 is introduced into the rotor 1, it comes into the position illustrated in FIG. 1, in which its notches respectively control the position of the pins 12, 13; the junction between each pair of pins 12, 13 is made exactly at the junction surface of the rotor 1 and the stator 2, so that the rotor 1 can rotate inside the stator 2. As and the rotation of the key 8 from this position, the part 9 and its finger 10 rotate around the axis XX of the rotor 1, and the finger 10 comes to mesh with the bolt 11 in one of the notches 11 'of this last (Figure 2), triggering the opening or closing of the lock according to the direction of rotation around the axis XX. After rotation of the key 8 over a full revolution, this key can be removed and the springs 14 push the pins 12, 13 which again in rotation secure the rotor 1 and the stator 2, as before the introduction of the key 8.

En cas de manoeuvre frauduleuse par introduction d'une mauvaise clé ou tentative d'effraction selon les méthodes décrites ci-dessus, le rotor 1 et le stator 2 sont maintenus solidaires en rotation par les goupilles 12, 13 puisque l'absence de la bonne clé ne permet pas d'obtenir le positionnement correct des goupilles 12,13 assurant la libre rotation du rotor 1 à l'intérieur du stator 2. Ces deux organes tournent donc ensemble dans le capot 3 après retrait de la bille 4 à l'intérieur du manchon 3a, à l'encontre de la force de rappel du ressort 5. Dans ces conditions, le doigt 10 tourne, non plus autour de l'axe X-X, mais autour de l'axe Y-Y du stator 2, de sorte que son rayon de rotation r autour de Y-Y est nettement réduit-par rapport à son rayon de rotation normale, l'axe de rotation Y-Y du stator 2 étant par construction plus éloigné du pêne 11 que l'axe X-X. L'axe du doigt 10 pourrait même à la limite être confondu avec l'axe de rotation Y-Y.In the event of fraudulent operation by the introduction of a wrong key or attempted break-in according to the methods described above, the rotor 1 and the stator 2 are held in rotation by the pins 12, 13 since the absence of the correct key does not allow to obtain the correct positioning of the pins 12,13 ensuring the free rotation of the rotor 1 inside the stator 2. These two members therefore rotate together in the cover 3 after removal of the ball 4 inside of the sleeve 3a, against the return force of the spring 5. Under these conditions, the finger 10 no longer rotates around the axis XX, but around the axis YY of the stator 2, so that its radius of rotation r around YY is markedly reduced compared to its normal radius of rotation, the axis of rotation YY of the stator 2 being by construction further from the bolt 11 than the axis XX. The axis of the finger 10 could even at the limit be confused with the axis of rotation Y-Y.

Dans ces conditions, l'amplitude du mouvement de rotation du doigt 10 (Figure 3) est insuffisante pour lui permettre d'atteindre une encoche 11', de sorte que le pêne 11 reste hors de portée du doigt 10 et ne peut être entraîné. Après cessation de la manceuvre frauduleuse, le fonctionnement de la sûreté redevient normal par utilisation de la bonne clé 8.Under these conditions, the amplitude of the rotation movement of the finger 10 (FIG. 3) is insufficient to allow it to reach a notch 11 ′, so that the bolt 11 remains out of the reach of the finger 10 and cannot be driven. After the fraudulent operation has ceased, the operation of the security returns to normal by using the correct key 8.

En variante, le positionnement du stator 2 peut être obtenu par d'autres moyens que la bille 4 et le ressort 5, par exemple par une goupille de sécurité déterminée pour se briser en cas de rotation forcée. Dans ce cas, il y a impossibilité définitive d'actionner le pêne 11, même avec la bonne clé, ce qui peut dans certains cas constituer une sécurité supplémentaire.As a variant, the positioning of the stator 2 can be obtained by means other than the ball 4 and the spring 5, for example by a safety pin determined to break in the event of forced rotation. In this case, there is a final impossibility of operating the bolt 11, even with the right key, which can in some cases constitute additional security.

Toutefois, il peut arriver sans qu'il y ait manceuvre frauduleuse, que l'utilisateur n'enfonce pas suffisamment la clé dans le rotor 1. Dans ce cas, tout se passe comme s'il avait introduit une mauvaise clé, et il n'y a pas déplacement du pêne.However, it can happen without fraudulent operation, that the user does not insert the key sufficiently into the rotor 1. In this case, everything happens as if he had inserted a wrong key, and there n there is no displacement of the bolt.

Il peut également arriver que l'utilisateur après avoir enfoncé insuffisamment la clé 8, commence la rotation de l'ensemble rotor 1-stator 2, puis enfonce la clé 8 en cours de rotation. Il provoque ainsi la disjonction du rotor 1 et du stator 2, ce qui entraîne l'augmentation de l'amplitude du mouvement de rotation du doigt 10, et le déplacement de l'axe de rotation X-X, de sorte que le doigt 10 n'est plus dans les conditions d'un engrènement normal dans une encoche 11' du pêne 11 (Figure 4), et que le mécanisme se bloque.It can also happen that the user, after having pressed the key 8 insufficiently, begins the rotation of the rotor 1-stator 2 assembly, then presses the key 8 during rotation. It thus causes the disjunction of the rotor 1 and the stator 2, which causes the amplitude of the rotation movement of the finger 10 to increase, and the axis of rotation XX to move, so that the finger 10 doesn’t is no longer under the conditions of normal meshing in a notch 11 'of the bolt 11 (Figure 4), and that the mechanism is blocked.

Pour éviter cet inconvénient, on ajoute (second mode de réalisation illustré aux Figures 5 à 7), un dispositif qui solidarise le rotor 1 et le stator 2 pendant la durée d'un tour complet. Dans cette forme de réalisation, la serrure est ainsi pourvue d'un cliquet 17 articulé en 16 sur le foncet 6, du côté de ce dernier opposé au stator 2 et au rotor 1. Le cliquet 17 est muni d'un bossage 19 apte à venir s'engager dans une encoche complémentaire 21 ménagée dans un disque 23 et appuyant sur le sommet d'une plaque 22 susceptible de coulisser sur le disque 23 fixé au stator 2 coaxialement à ce dernier, du côté du foncet 6 tourné vers le pêne 11. La plaque 22 est guidée dans son coulissement par quatre pieds ou pions 24 fixés sur le disque 23, sous l'action d'un ressort de traction 25 accroché au disque 23 en 26, lorsque le bossage 19 est sorti de l'encoche 21, dans laquelle il tend à être normalement maintenu par un ressort 27 de rappel du cliquet 17, attaché à une extrémité de ce dernier opposée à son axe de rotation 16. La plaque coulissante 22 présente un évidement central 22a permettant d'y loger un organe 28 fixé au rotor 1 par des vis 29. L'organe 28 et le bord en regard de l'évidement 22a sont pourvus de moyens de solidarisation de l'organe 28 et de la plaque 22 en rotation d'un seul bloc avec le rotor 1, susceptibles d'entrer en action lorsque la plaque 22 coulisse entre les pions 24 sous l'action du ressort 25 à partir de sa position de la Figure 6, lorsque le bossage 19 sort de l'encoche 21. Dans l'exemple décrit, ces moyens de solidarisation consistent en un tenon 31 agencé sur le bord de l'évidement 22a, et une mortaise conjuguée 32 de l'organe 28 (ou inversement). Enfin, les vis 29 servent également à fixer la pièce 9 supportant le doigt 10, à l'organe 28 et au rotor 1 (Figure 5).To avoid this drawback, there is added (second embodiment illustrated in Figures 5 to 7), a device which secures the rotor 1 and the stator 2 for the duration of a complete revolution. In this embodiment, the lock is thus provided with a pawl 17 articulated at 16 on the plug 6, on the side of the latter opposite the stator 2 and the rotor 1. The pawl 17 is provided with a boss 19 suitable for come and engage in a complementary notch 21 formed in a disc 23 and pressing on the top of a plate 22 capable of sliding on the disc 23 fixed to the stator 2 coaxially with the latter, on the side of the bolt 6 facing the bolt 11 The plate 22 is guided in its sliding by four feet or pins 24 fixed on the disc 23, under the action of a tension spring 25 attached to the disc 23 at 26, when the boss 19 has come out of the notch 21 , in which it tends to be normally held by a spring 27 for returning the pawl 17, attached to one end of the latter opposite its axis of rotation 16. The sliding plate 22 has a central recess 22a for accommodating a member there 28 fixed to rotor 1 by screws 29. The member 28 and the edge in rega rd of the recess 22a are provided with means for securing the member 28 and the plate 22 in rotation in one piece with the rotor 1, capable of coming into action when the plate 22 slides between the pins 24 under the action of the spring 25 from its position in Figure 6, when the boss 19 comes out of the notch 21. In the example described, these securing means consist of a stud 31 arranged on the edge of the recess 22a, and a conjugate mortise 32 of the member 28 (or vice versa). Finally, the screws 29 also serve to fix the part 9 supporting the finger 10, to the member 28 and to the rotor 1 (Figure 5).

Le fonctionnement de la serrure des Figures 5 à 7 est le suivant :The operation of the lock of Figures 5 to 7 is as follows:

En position d'attente, le cliquet 17 détermine la position du disque 23 par son bossage 19 enfoncé dans l'encoche 21 (Figure 6), et en même temps l'enfoncement de la plaque 22 par son sommet 22b avec lequel ce bossage est en contact, de sorte que le tenon 31 est éloigné de la mortaise 32. L'utilisation de la bonne clé permet dans ces conditions, la rotation du rotor 1 seulement et l'actionnement du pêne.In the standby position, the pawl 17 determines the position of the disc 23 by its boss 19 pressed into the notch 21 (Figure 6), and at the same time the depression of the plate 22 by its top 22b with which this boss is in contact, so that the pin 31 is distant from the mortise 32. The use of the correct key allows under these conditions, the rotation of the rotor 1 only and the actuation of the bolt.

Au contraire, la rotation forcée du stator 2 par une fausse clé ou par un autre outil, entraîne en rotation le disque 23, et par conséquent l'échappement du bossage 19 hors de l'encoche 21 (Figure 7). Le ressort 25 rappelle donc la plaque 22 qui coulisse entre les pieds 24 perpendiculairement à l'axe X-X, de sorte que le tenon 31 s'engage dans l'encoche 32. De ce fait, le rotor 1 et le stator 2 sont solidarisés pendant la durée d'un tour complet jusqu'au moment où le bossage 19 rencontre l'encoche 21 et y pénètre, ce qui lui permet d'enfoncer la plaque 22, laquelle dégage le tenon 31 de l'encoche 32 en libérant le rotor 1. Pendant la rotation d'un seul bloc du rotor 1, du stator 2 et des pièces 22, 23, 28, 9 et 10, le doigt 10 tourne autour de l'axe Y-Y du stator 2, et ne peut donc engrener avec les encoches du pêne.On the contrary, the forced rotation of the stator 2 by a false key or by another tool, causes the disc 23 to rotate, and consequently the boss 19 to escape from the notch 21 (Figure 7). The spring 25 therefore recalls the plate 22 which slides between the feet 24 perpendicular to the axis XX, so that the stud 31 engages in the notch 32. As a result, the rotor 1 and the stator 2 are secured for the duration of a full turn until the boss 19 meets the notch 21 and enters it, which allows the plate 22 to be pushed in, which releases the pin 31 from the notch 32 by releasing the rotor 1. During the rotation of a single block of the rotor 1, the stator 2 and the parts 22, 23, 28, 9 and 10, the finger 10 rotates around the axis YY of the stator 2, and therefore cannot mesh with the notches of the bolt.

On notera que, si la rotation forcée du stator 2 et du rotor 1 provient d'une fausse manoeuvre d'un utilisateur avec la bonne clé (enfoncement partiel, puis rotation de la clé), l'utilisateur peut à nouveau ouvrir normalement la serrure à l'issue d'un tour complet de l'ensemble de ces pièces.It will be noted that, if the forced rotation of the stator 2 and of the rotor 1 comes from a wrong operation of a user with the right key (partial depression, then rotation of the key), the user can again open the lock normally after a full turn of all of these parts.

Dans le troisième mode de réalisation illustré aux Figures 8 à 10,.et applicable aux sûretés à pompes ou à celles dont le rotor et le stator sont concentriques, on diminue ou même on annule l'amplitude du mouvement de rotation du doigt 10 de commande du pêne.In the third embodiment illustrated in FIGS. 8 to 10, and applicable to collateral with pumps or those whose rotor and stator are concentric, the amplitude of the rotation movement of the control finger 10 is reduced or even canceled. of the bolt.

Comme dans la réalisation précédente, un disque 23 portant une encoche 21 est solidaire du stator 2 au moyen des vis 30, et le cliquet 17 rappelé par le ressort 27 maintient le stator 2 en position normale, de façon débrayable. Au disque 23 est fixé un guide 40 profilé en U arrondi et faisant saillie du disque 23 du côté du pêne. Un plateau circulaire 60 est logé à l'intérieur du guide 40 coaxialement au rotor 1, lequel est accessible à travers un trou 33 du disque 23. On fixe sur le rotor 1 un ensemble constitué par une rondelle 34, une entretoise 35, un coulisseau circulaire 36 dimensionné pour pouvoir coulisser à l'intérieur du guide 40, et le plateau 60, et ce au moyen d'une vis axiale 37 traversant la rondelle 34, l'entretoise 35, une lumière diamétrale allongée 38 du coulisseau 36, un trou central du plateau 60, la vis 37 venant s'introduire dans le trou 33 du rotor 1. Le plateau 60 est muni d'un ergot 39 de guidage pouvant pénétrer dans un trou 41 du rotor 1, pour assurer le positionnement de l'ensemble.As in the previous embodiment, a disc 23 carrying a notch 21 is secured to the stator 2 by means of the screws 30, and the pawl 17 recalled by the spring 27 maintains the stator 2 in the normal position, disengageably. To the disc 23 is fixed a guide 40 profiled in a rounded U and projecting from the disc 23 on the side of the bolt. A circular plate 60 is housed inside the guide 40 coaxially with the rotor 1, which is accessible through a hole 33 of the disc 23. An assembly consisting of a washer 34, a spacer 35, a slide is fixed on the rotor 1 circular 36 sized to be able to slide inside the guide 40, and the plate 60, and this by means of an axial screw 37 passing through the washer 34, the spacer 35, an elongated diametrical lumen 38 of the slide 36, a hole central of the plate 60, the screw 37 being introduced into the hole 33 of the rotor 1. The plate 60 is provided with a lug 39 for guiding which can penetrate into a hole 41 of the rotor 1, to ensure the positioning of the assembly .

Le plateau 60 est équipé de deux pieds 42 saillant vers le coulisseau 36 dans la lumière allongée 38 duquel ils viennent s'introduire ainsi que, placés de part et d'autre des pieds 42, de butées 43 qui s'engagent dans des logements correspondants 44 ménagés dans le coulisseau 36 parallèlement à sa lumière 38 de chaque côté de celle-ci.The plate 60 is equipped with two feet 42 projecting towards the slide 36 in the elongated opening 38 from which they are introduced as well as, placed on either side of the feet 42, stops 43 which engage in corresponding housings 44 formed in the slide 36 parallel to its lumen 38 on each side of the latter.

Deux ressorts 45 sont placés dans les logements latéraux 44 du coulisseau 36, en appui sur les pieds 43, et sollicitent élastiquement le coulisseau 36 vers la position de celui-ci où il est arrêté par l'une des butées 42 (Figure 10), lorsque le cliquet 17 est dégagé de l'encoche 21. Le plateau 9 de support du doigt 10 est fixé sur le coulisseau 36 au moyen d'entretoises 46 permettant de compenser l'épaisseur de la rondelle 34 et celle de la tête de la vis 37, ces entretoises 46 recevant des vis 47 de fixation du plateau 9 au coulisseau 36.Two springs 45 are placed in the lateral housings 44 of the slide 36, bearing on the feet 43, and elastically urge the slide 36 towards the position of the latter where it is stopped by one of the stops 42 (FIG. 10), when the pawl 17 is released from the notch 21. The plate 9 for supporting the finger 10 is fixed to the slide 36 by means of spacers 46 making it possible to compensate for the thickness of the washer 34 and that of the head of the screw 37, these spacers 46 receiving screws 47 for fixing the plate 9 to the slide 36.

Le fonctionnement de ce mode de réalisation est le suivant :The operation of this embodiment is as follows:

En position d'attente (Figure 9), le cliquet 17 dont le bossage 19 est élargi latéralement, immobilise le disque 23 par son encoche 21, et en même temps appuie sur le coulisseau 36 en comprimant les ressorts 45, dont les extrémités opposées aux pieds saillants 43 sollicitent les parties terminales des logements 44 opposés auxdites butées 43, de manière que l'axe du coulisseau 36 soit confondu avec l'axe X-X du rotor 1. On voit que, sous l'action de la bonne clé, le mouvement du rotor 1 est transmis à la pièce 9 portant le doigt 10, par l'intermédiaire du pied 39, des butées 43 et des tétons des guidages 42 entraînant en rotation le coulisseau 36, auquel est fixé le plateau 9.In the standby position (Figure 9), the pawl 17, the boss 19 of which is laterally widened, immobilizes the disc 23 by its notch 21, and at the same time presses on the slide 36 by compressing the springs 45, whose ends opposite to the projecting feet 43 urge the end portions of the housings 44 opposite said abutments 43, so that the axis of the slide 36 is coincident with the axis XX of the rotor 1. It can be seen that, under the action of the correct key, the movement of the rotor 1 is transmitted to the part 9 carrying the finger 10, via the foot 39, stops 43 and pins of the guides 42 causing the slide 36 to rotate, to which the plate 9 is fixed.

En cas de manoeuvre frauduleuse, le disque 23 franchit l'obstacle opposé par le bossage 19 et tourne (Figure 10). Le cliquet 17 est maintenu en position relevée en frottant par son bossage 19 sur le disque 23, ce qui libère le coulisseau 36 qui se déplace latéralement sous l'action des ressorts 45 en entraînant le plateau 9, dont le doigt 10 se rapproche de ce fait de l'axe de rotation X-X et échappe aux encoches 11' du pêne (Figure 10).In the event of a fraudulent operation, the disc 23 crosses the obstacle opposed by the boss 19 and rotates (Figure 10). The pawl 17 is held in the raised position by rubbing by its boss 19 on the disc 23, which releases the slider 36 which moves laterally under the action of the springs 45 by driving the plate 9, the finger 10 of which approaches this made of the axis of rotation XX and escapes the notches 11 'of the bolt (Figure 10).

Dans le cas où la clé n'est enfoncée correctement qu'après avoir commencé à faire tourner le stator 2, le rotor 1 reste solidaire du stator 2 qui ne peut tourner entre les branches latérales du guide 40 (Figure 10).In the case where the key is correctly inserted only after having started to rotate the stator 2, the rotor 1 remains integral with the stator 2 which cannot rotate between the lateral branches of the guide 40 (FIG. 10).

Le quatrième mode de réalisation de la serrure illustré aux Figures 11 et 12, applicable à toutes les sûretés pour déjouer les manoeuvres frauduleuses, permet de provoquer le déplacement longitudinal sur son axe du plateau 9 supportant le doigt 10 de manière à éloigner le doigt 10 du plan de déplacement du pêne. Dans cette réalisation, le disque 48 solidaire du stator 2 présente un évidement central traversé par un guide 49 fixé concentriquement au rotor 1, et dans lequel sont agencées des rainures longitudinales 51. Le guide 49 reçoit intérieurement une pièce 52 munie d'ergots latéraux 53 engagés à l'intérieur des rainures 51, de sorte que la pièce 52 peut coulisser axialement dans le guide 49. A la pièce 52 est fixé un plateau 54 constituant une poulie d'axe X-X, et qui porte le doigt de commande 10 du pêne. La pièce 52 peut coulisser dans le guide 49 longitudinalement sans possibilité de décalage angulaire.The fourth embodiment of the lock illustrated in Figures 11 and 12, applicable to all securities to thwart fraudulent operations, allows to cause the longitudinal movement on its axis of the plate 9 supporting the finger 10 so as to move the finger 10 away from the movement plan of the bolt. In this embodiment, the disc 48 integral with the stator 2 has a central recess traversed by a guide 49 fixed concentrically with the rotor 1, and in which longitudinal grooves 51 are arranged. The guide 49 internally receives a part 52 provided with lateral lugs 53 engaged inside the grooves 51, so that the part 52 can slide axially in the guide 49. To the part 52 is fixed a plate 54 constituting a pulley of axis XX, and which carries the control finger 10 of the bolt . The part 52 can slide in the guide 49 longitudinally without the possibility of angular offset.

Suivant une particularité, l'invention prévoit des moyens pour déplacer automatiquement en translation axiale la pièce 52 et par conséquent le doigt 10 en direction du rotor 1, lorsque par suite d'une tentative irrégulière d'ouverture de la serrure, le stator 2 et le disque 48 sont entraînés en rotation avec le rotor 1, et que le bossage 19 du cliquet 17 sort de son encoche du disque 48. Dans cet exemple, ces moyens sont constitués par une plaque 55 articulée sur un support 56 fixé au foncet 6, par exemple au moyen d'une vis 50 engagée dans ce support 56 et traversant la plaque 55. Cette dernière présente dans sa partie médiane un évidement 57 correspondant au diamètre de la poulie 54 mesuré en fond de gorge, la poulie 54 étant insérée dans cet évidement. Pour cela, elle est réalisée en deux parties séparées, ou bien la plaque 55 est découpée d'une manière appropriée, comme illustré à la Figure 13, où l'on voit qu'elle présente l'évidement 57 communiquant avec l'extérieur de la plaque par une découpe 58 de passage de la poulie 54. Ainsi, lorsque la plaque 55 est articulée sur la vis 50, et que la poulie 54 est engagée dans l'évidement central 57, la poulie 54 peut être déplacée en translation par un débattement angulaire de la plaque 55. Enfin, cette dernière est munie d'un bossage 59 susceptible de venir en appui sur un ergot associé 61 faisant saillie du disque 48 (Figure 11), lorsque le bossage 19 du cliquet 17 est engagé dans son encoche 21.According to one feature, the invention provides means for automatically moving in axial translation the part 52 and consequently the finger 10 in the direction of the rotor 1, when as a result of an irregular attempt to open the lock, the stator 2 and the disc 48 are rotated with the rotor 1, and that the boss 19 of the pawl 17 comes out of its notch of the disc 48. In this example, these means consist of a plate 55 articulated on a support 56 fixed to the pin 6, for example by means of a screw 50 engaged in this support 56 and passing through the plate 55. The latter has in its middle part a recess 57 corresponding to the diameter of the pulley 54 measured at the bottom of the groove, the pulley 54 being inserted in this obviously. For this, it is made in two separate parts, or the plate 55 is cut out in an appropriate manner, as illustrated in Figure 13, where sees that it has the recess 57 communicating with the outside of the plate by a cutout 58 for passage of the pulley 54. Thus, when the plate 55 is articulated on the screw 50, and that the pulley 54 is engaged in the 'central recess 57, the pulley 54 can be moved in translation by an angular movement of the plate 55. Finally, the latter is provided with a boss 59 capable of coming to bear on an associated lug 61 projecting from the disc 48 (Figure 11), when the boss 19 of the pawl 17 is engaged in its notch 21.

Lorsque les bossages 59 et 61 sont en contact, la rotation de la bonne clé entraîne, par l'intermédiaire du guide 49 et de la pièce 52, la rotation de la poulie-plateau 54, dont le doigt 10 peut venir s'insérer dans une encoche 11' du pêne 11 et déplacer latéralement ce dernier (Figure 11). Un ressort 62 fixé d'une part au foncet 6 et d'autre part à l'extrémité de la plaque 55 opposée à son articulation tend à rappeler élastiquement la plaque 55 vers le foncet 6. Ainsi, en fonctionnement normal de la serrure, le ressort de rappel 62 reste tendu tandis que les bossages 59 et 61 sont en contact.When the bosses 59 and 61 are in contact, the rotation of the correct key causes, through the guide 49 and the part 52, the rotation of the pulley-plate 54, the finger 10 of which can be inserted into a notch 11 'of the bolt 11 and move the latter laterally (Figure 11). A spring 62 fixed on the one hand to the plug 6 and on the other hand to the end of the plate 55 opposite its articulation tends to resiliently return the plate 55 towards the plug 6. Thus, in normal operation of the lock, the return spring 62 remains tensioned while the bosses 59 and 61 are in contact.

En cas de rotation du stator 2 avec le rotor 1, le disque 48 tourne également, de sorte que son ergot 61 se dégage du bossage 59, et que la plaque 55 est rappelée par le ressort 62 vers le foncet 6 en entraînant axialement la poulie 54 dont le doigt 10 n'est plus alors assez long pour atteindre l'encoche 11' du pêne 11 (Figure 12). En même temps, le bossage 19 du cliquet 17 est sorti de l'encoche 21. Ainsi l'ouverture frauduleuse de la serrure est automatiquement empêchée par retrait longitudinal du doigt 10.In the event of rotation of the stator 2 with the rotor 1, the disc 48 also rotates, so that its lug 61 emerges from the boss 59, and that the plate 55 is returned by the spring 62 towards the bolt 6 by axially driving the pulley 54 whose finger 10 is no longer long enough to reach the notch 11 'of the bolt 11 (Figure 12). At the same time, the boss 19 of the pawl 17 has come out of the notch 21. Thus the fraudulent opening of the lock is automatically prevented by longitudinal withdrawal of the finger 10.

Dans le cas où la clé n'est enfoncée correctement qu'après avoir commencé à faire tourner le stator 2, le rotor peut tourner indéfiniment sans que le doigt 10 puisse jamais atteindre l'encoche du pêne. Il suffit alors de retirer la clé en partie et de faire tourner l'ensemble rotor-stator jusqu'au moment où le cliquet 17 s'enclenche dans l'encoche 21 du disque 48, puis d'enfoncer la clé correctement pour retrouver le fonctionnement normal.In the case where the key is not correctly inserted until after having started to rotate the stator 2, the rotor can rotate indefinitely without the finger 10 can ever reach the notch of the bolt. It then suffices to remove the key in part and to rotate the rotor-stator assembly until the pawl 17 engages in the notch 21 of the disc 48, then to insert the key correctly to regain operation normal.

On décrira maintenant le cinquième mode de réalisation de la serrure selon l'invention, en référence aux Figures 14 à 16.The fifth embodiment of the lock according to the invention will now be described, with reference to Figures 14 to 16.

La serrure est munie d'un disque 63 fixé coaxialement au stator 2 du côté du foncet 6 tourné vers le pêne, et d'une came cylindrique creuse 64 solidaire du disque 63, dans laquelle sont formées plusieurs encoches 65, la came 64 étant concentrique au rotor 1. Une pièce 66 est montée coulissante axialement dans un guide 67 fixé à l'extrémité du rotor 1 par des vis telles que 68, et est solidarisée avec une contre-came 69 portant autant de dents 71 que la came 64 comporte d'encoches 65. Le nombre des dents 71 et des encoches 65, ainsi que leur position sont tels qu'il n'y a pénétration des dents 71 dans les encoches 65 que pour une seule position angulaire déterminée correspondant à la position d'attente de la sûreté.The lock is provided with a disc 63 fixed coaxially to the stator 2 on the side of the bolt 6 facing the bolt, and with a hollow cylindrical cam 64 integral with the disc 63, in which several notches 65 are formed, the cam 64 being concentric to the rotor 1. A part 66 is slidably mounted axially in a guide 67 fixed to the end of the rotor 1 by screws such as 68, and is secured to a cam follower 69 carrying as many teeth 71 as the cam 64 has d 'notches 65. The number of teeth 71 and notches 65, as well as their position are such that there is penetration of teeth 71 in the notches 65 only for a single determined angular position corresponding to the waiting position of safety.

Le plateau 72 supportant le doigt 10 d'entraînement du pêne est solidaire de la contre-came 69, en formant avec cette dernière et la pièce 66, qui peut coulisser dans les rainures 51 du guide 67 par des ergots de guidage 53, un ensemble monobloc déplaçable en translation axiale suivant l'axe X-X, lorsqu'il tourne par rapport à la came 64.The plate 72 supporting the latch drive finger 10 is integral with the cam follower 69, forming with the latter and the part 66, which can slide in the grooves 51 of the guide 67 by guide pins 53, a set monobloc movable in axial translation along the axis XX, when it rotates relative to the cam 64.

Enfin, une plaque 73 parallèle au foncet 6, est percée d'un orifice central 74 permettant le passage du plateau support 72 du doigt 10, et est rappelée élastiquement vers le foncet 6 par des ressorts de traction 75. Comme dans les réalisations précédentes, un cliquet 17 porte un bossage 19 pouvant venir s'emboîter dans une encoche 21 du disque 63.Finally, a plate 73 parallel to the plug 6, is pierced with a central orifice 74 allowing the passage of the support plate 72 of the finger 10, and is elastically returned to the plug 6 by tension springs 75. As in the previous embodiments, a pawl 17 carries a boss 19 which can fit into a notch 21 in the disc 63.

Au repos, la came 64 et la contre-came 71 sont imbriquées l'une dans l'autre sous l'action de la plaque 73 (Figure 15), les dents 71 étant enfoncées dans les encoches complémentaires 65. La rotation du rotor 1 sous l'action de la bonne clé provoque la rotation de la contre-came 69 par rapport à la came 64 immobilisée par le cliquet 17. La contre-came 69 ne peut tourner qu'après avoir franchi les encoches 65, ce qui provoque son déplacement longitudinal en même temps que celui du plateau support 72 et donc du doigt 10, qui est ainsi avancé vers le pêne dans lequel il peut engrener. La position angulaire des dents 71 de la contre-came 69 est telle, qu'en dehors de la position initiale où la came 64 et la contre-came 69 sont imbriquées, il y a toujours au cours de la rotation au moins deux dents 71 en contact avec' la périphérie de la came 64. De plus, ces deux dents 71 doivent être sensiblement diamétralement opposées, de manière à favoriser le guidage de la pièce 66 en translation axiale sans rotation, dans le guide 67 dont l'enfoncement est relativement court pour diminuer l'encombrement de la serrure.At rest, the cam 64 and the cam follower 71 are nested one inside the other under the action of the plate 73 (FIG. 15), the teeth 71 being driven into the complementary notches 65. The rotation of the rotor 1 under the action of the right key causes the rotation of the cam follower 69 relative to the cam 64 immobilized by the pawl 17. The cam follower 69 can only rotate after having passed the notches 65, which causes its longitudinal displacement at the same time as that of the support plate 72 and therefore of the finger 10, which is thus advanced towards the bolt in which it can mesh. The angular position of the teeth 71 of the cam follower 69 is such that, apart from the initial position where the cam 64 and the cam follower 69 are nested, during the rotation there are always at least two teeth 71 in contact with the periphery of the cam 64. In addition, these two teeth 71 must be substantially diametrically opposite, so as to favor the guiding of the part 66 in axial translation without rotation, in the guide 67, the insertion of which is relatively short to reduce the size of the lock.

En cas de manoeuvre frauduleuse, la rotation du stator entraîne celle de la came 64 et de la contre-came 69 qui restent imbriquées, de sorte que le doigt 10 conserve sa position en retrait, escamotée par rapport au pêne, qu'il ne peut actionner. Dans le cas où la clé n'est enfoncée correctement qu'après avoir commencé à faire tourner le stator, les deux cames restent imbriquées l'une dans l'autre, étant maintenues ensemble par la force de rappel des ressorts 75, sans provoquer l'entraînement du pêne, ni aucun blocage du mécanisme.In the event of fraudulent operation, the rotation of the stator causes that of the cam 64 and of the cam follower 69 which remain nested, so that the finger 10 retains its position in withdrawal, retracted with respect to the bolt, which it cannot operate. In the case where the key is not correctly inserted until after having started to rotate the stator, the two cams remain nested one inside the other, being held together by the restoring force of the springs 75, without causing the 'bolt drive, nor any blocking of the mechanism.

Le sixième mode de réalisation de la serrure selon l'invention, illustré aux Figures 17 à 19, est applicable aux sûretés dont le rotor 1 et le stator 2 sont excentrés, le doigt 10 d'entraînement du pêne se déplaçant longitudinalement.The sixth embodiment of the lock according to the invention, illustrated in Figures 17 to 19, is applicable to collateral whose rotor 1 and stator 2 are eccentric, the pin 10 for driving the bolt moving longitudinally.

Dans cette serrure, le disque 76 dans lequel est ménagée l'encoche 21 coopérant avec le cliquet 17, est fixé à une pièce cylindrique 77 s'étendant dans le capot 3, et solidarisée en rotation avec le stator 2 par des vis 83. Un axe 78 traverse le disque 76 ainsi qu'un logement de la pièce 77, cet axe 78 étant coaxial à l'axe X-X du rotor 1 et comportant une partie terminale 78a montée coulissante à l'intérieur du rotor 1. Cette partie 78a constitue donc une coulisse sayant le profil 78b de la clé 8, et de ce fait ne peut que se déplacer longitudinalement dans le rotor 1, sans déplacement angulaire par rapport à celui-ci. L'extrémité de l'axe 78 opposée à la coulisse 78a porte le plateau-support 79' du doigt de commande 10. Le rotor 1 est retenu à l'intérieur du sttator 2 par une collerette 81 à l'extrémité d'entrée, et par un circlip 82 à son autre extrémité. Un ressort hélicoïdal 84 de compression, monté coaxialement à l'axe 78, prend appui sur le disque 76 et exerce une poussée sur une collerette 85 solidaire de l'axe 78. De ce fait, sous la poussée du ressort 84, l'extrémité 78a est engagée à coulisse dans le rotor 1 jusqu'à ce que la collerette 85 vienne en butée contre l'extrémité du rotor, le plateau-support 79 occupant alors la position 79a, escamotée par rapport au pêne, et représentée en traits interrompus. Enfin, le plateau 79 est muni d'une collerette 86 coaxiale à l'axe X-X, par exemple de forme circulaire, et un écran 87 est maintenu fixe et parallèle au foncet 6, à un écartement déterminé de ce dernier, par des entretoises de support 88. L'écran 87 est percé d'un trou 89, circulaire si la collerette 86 est circulaire, et d'un diamètre autorisant le passage de cette dernière de part et d'autre de l'écran 87.In this lock, the disc 76 in which is formed the notch 21 cooperating with the pawl 17, is fixed to a cylindrical part 77 extending in the cover 3, and secured in rotation with the stator 2 by screws 83. A axis 78 passes through the disc 76 as well as a housing of the part 77, this axis 78 being coaxial with the axis XX of the rotor 1 and comprising an end portion 78a mounted sliding inside the rotor 1. This part 78a therefore constitutes a slide saying the profile 78b of the key 8, and therefore can only move longitudinally in the rotor 1, without angular displacement relative to the latter. The end of the axis 78 opposite the slide 78a carries the support plate 79 ′ of the control finger 10. The rotor 1 is retained inside the stator 2 by a flange 81 at the inlet end, and by a circlip 82 at its other end. A helical compression spring 84, mounted coaxially with the axis 78, bears on the disc 76 and exerts a thrust on a flange 85 secured to the axis 78. Therefore, under the thrust of the spring 84, the end 78a is slidably engaged in the rotor 1 until the flange 85 abuts against the end of the rotor, the support plate 79 then occupying position 79a, retracted with respect to the bolt, and shown in broken lines. Finally, the plate 79 is provided with a flange 86 coaxial with the axis XX, for example of circular shape, and a screen 87 is kept fixed and parallel to the block 6, at a determined spacing from the latter, by spacers of support 88. The screen 87 is pierced with a hole 89, circular if the flange 86 is circular, and of a diameter allowing the passage of the latter on either side of the screen 87.

En fonctionnement normal, la bonne clé 8 pousse l'ensemble formé par la coulisse 78a, l'axe 78, le plateau 79 et le doigt 10, en comprimant le ressort 84, et ce à partir de la position de repos du plateau 79a, jusqu'à la position en traits continus, dans laquelle le doigt 10 se trouve placé sur la trajectoire du pêne et peut l'actionner. En l'absence de clé, le ressort 84 ramène l'ensemble vers l'arrière, et le doigt 10 se retrouve hors de portée du pêne.In normal operation, the correct key 8 pushes the assembly formed by the slide 78a, the axis 78, the plate 79 and the finger 10, by compressing the spring 84, and this from the rest position of the plate 79a, to the position in solid lines, in which the finger 10 is placed on the path of the bolt and can actuate it. In the absence of a key, the spring 84 brings the assembly back, and the finger 10 is found out of reach of the bolt.

En cas de rotation forcée du stator 2, la coulisse 78a n'est pas poussée, de sorte que le doigt 10 est maintenu hors de portée du pêne. En cas d'utilisation d'une ébauche de clé non taillée, mais au profil de la bonne clé 8, la coulisse 78a est poussée, ainsi que le plateau 79 et le doigt 10. Mais le rotor 1 et le stator 2 étant restés solidaires puisque la fausse clé n'est pas taillée, tournent ensemble, de sorte que le plateau 79 tourne autour de l'axe Y-Y du stator (qui est décentré par rapport au rotor 1), et non autour de l'axe X-X du rotor. Ceci diminue par conséquent l'amplitude du mouvement rotatif du doigt 10, qui est insuffisante pour permettre à ce dernier d'atteindre une encoche 11' du pêne, comme dans le cas de la Figure 1.In the event of forced rotation of the stator 2, the slide 78a is not pushed, so that the finger 10 is kept out of the reach of the bolt. When using a blank key not cut, but the profile of the correct key 8, the slide 78a is pushed, as well as the plate 79 and the finger 10. But the rotor 1 and the stator 2 having remained integral since the dummy key is not cut, rotate together, so that the plate 79 rotates around the axis YY of the stator (which is off-center with respect to the rotor 1), and not around the axis XX of the rotor. This consequently reduces the amplitude of the rotary movement of the finger 10, which is insufficient to allow the latter to reach a notch 11 'of the bolt, as in the case of FIG. 1.

En cas de commencement de rotation du stator 2 par insuffisance d'enfoncement de la clé 8, puis enfoncement en cours de rotation, il y aurait risque de blocage du mécanisme par engrènement défectueux du doigt 10 dans une encoche 11' du pêne. Ce risque est précisément écarté grâce à la collerette 86 et à l'écran 87. En effet, en utilisation normale avec la bonne clé 8, la collerette 86 traverse l'écran 87 à travers le trou 89 durant son mouvement de translation (Figure 18). En revanche, en cas de rotation du stator 2, la collerette 86 tourne autour de l'axe Y-Y, et est donc tout d'abord décentrée, tout en restant dans sa position initiale escamotée (correspondant à la position 79a du plateau), et ce tant que la clé n'a pas été complètement enfoncée. La collerette 86 se trouve donc dans la position représentée à la Figure 19, décentrée par rapport à l'ouverture 89, de sorte que lorsque la clé est complètement enfoncée, l'axe 78 pousse la collerette 86 en butée contre l'écran 87, l'axe X-X du rotor 1 et de la collerette 86 ayant décrit un arc du cercle 90. L'écran 87 s'oppose donc à l'enfoncement complet de la clé, ce qui permet d'achever le tour à la fin duquel la clé 8 peut être enfoncée, la sûreté pouvant alors fonctionner normalement.In the event of stator 2 starting to rotate due to insufficient insertion of the key 8, then insertion during rotation, there would be a risk of blocking the mechanism by faulty engagement of the finger 10 in a notch 11 ′ of the bolt. This risk is precisely eliminated thanks to the collar 86 and the screen 87. In fact, in normal use with the correct key 8, the collar 86 crosses the screen 87 through the hole 89 during its translational movement (Figure 18 ). On the other hand, in the event of rotation of the stator 2, the flange 86 rotates around the axis YY, and is therefore first off-center, while remaining in its initial retracted position (corresponding to the position 79a of the plate), and this until the key has been fully pressed. The flange 86 is therefore in the position shown in FIG. 19, offset from the opening 89, so that when the key is fully depressed, the axis 78 pushes the flange 86 into abutment against the screen 87, the axis XX of the rotor 1 and of the flange 86 having described an arc of the circle 90. The screen 87 therefore prevents the key from being fully depressed, which makes it possible to complete the turn at the end of which the key 8 can be pressed, the safety can then operate normally.

Claims (11)

1. A safety lock comprising a rotor (1) in a stator (2) housed in a hood (3) fixed to a capping plate (6), the rotor (1) having a housing (16) able to receive a key (8) and being provided, at its end opposite to the opening for the entry of the key, with a part (9, 54, 72, 79) fixed to the rotor (1) and equipped with a finger (10) designed to move a bolt (11) when the rotor (1) and the said part are rotated by the key, characterized in that it comprises means to entrain the stator (2) integrally in rotation with the rotor (1) as a result of the action of an incorrect key or of another tool in the case of an attempted fraudulent opening of the lock, this disruption as a result initiating a displacement of the axis of rotation of the finger (10) fixed to the rotor (1), or a withdrawal in axial translation of this finger relative to the bolt (11), in order to prevent any operation of the bolt (11) through the introduction of the incorrect key or other tool, the stator (2) being connected to the hood (3) by an elastic coupling element (4, 17) which can be overcome by the action of a torque between the said stator (2) and the said hood (3).
2. A lock according to Claim 1, characterized in that the coupling element (4) comprises a ball (4) housed in the wall of the hood (3), and held bearing in a notch (4a) in the stator (2) by a spring (5) situated in a tubular transverse projection (3a) of the hood (3).
3. A lock according to Claim 1, characterized in that the coupling element (4) comprises a catch (17), articulated on the capping plate (6) on the side of the latter opposite to the stator (2) and the rotor (1), equipped with a boss (19) adapted to become engaged in a complementary notch (21) formed in a disc (23) fixed to the stator (2), coaxial with the latter, and on which a plate (22) can slide as a result of the action of at least one elastic returning element (25) when the boss (19) of the catch (17) is out of the corresponding notch (21), in which it normally tends to be held by a return spring (27) of the catch (17), and the sliding plate (22) has a central opening (22a) allowing a piece (28) fixed to the rotor (1) to be lodged there, this piece (28) and the facing edge of the opening (22a) being provided with means of fixing together the piece and the plate (22) in rotation in one block with the rotor (1), the stator (2) and the disc (23) when the boss (19) of the catch (17) comes out of the notch (21) following an attempted opening of the lock by an instrument other than the normal key.
4. A lock according to Claim 3, characterized in that the said means to fix together the part (9) carrying the finger (10) and the plate (22) consist of a tenon (31) made in the edge of the opening (22a) of the plate (22) and a complementary mortise (32) in the above mentioned piece (28) or vice-versa.
5. A lock according to Claim 1, characterized in that it comprises a disc (23) fixed to the stator (2) on the same side of the capping plate (6) as the part (9) carrying the finger (10) which operates the bolt (11), a U-shaped guide (40) projecting from the disc (23) to which it is fixed on the same side as the bolt, a circular plate (60) housed in this guide (40) coaxial with the rotor (1) and fixed to the latter, a slide (36) coaxial with the plate (60) and able to slide on the latter perpendicularly to the general axis of the lock as a result of the action of elastic returning elements (45), the slide (36) being fixed to the support (9) of the finger (10) which operates the bolt, and the disc (23) having a peripheral notch (21) which can engage a projecting boss (19) of a catch (17) articulated on the capping plate (6) and driven elastically towards the disc (23) by a return spring (27) in such a way that when the boss (19) is in the notch (21 it holds the assembly formed by the slide (36) and the support (9) of the finger (10) at the bottom of the guide (40), against the antagonistic driving force of the previously mentioned elastic elements (45), and when the boss (19) comes out of its notch (21) as a result of the use of an incorrect key, the said elastic elements (45) displace the slide (36) and the support (9) of the finger (10) until these parts are arrested by a projecting foot (42) of the plate (60), the assembly constituted by the plate (60), the slide (36) and the support (9) of the finger (10) then being fixed in rotation to the disc (23) and the stator (2) around the axis (X-X) of the latter.
6. A lock according to Claim 5, characterized in that the slide (36) has a window (38) perpendicular to the axis (X-X) of the lock, in which two stops formed by the projecting feet (42) of the plate (60) can slide, as well as the housings (44) which take the elastic returning elements (45) of the slide (36) and the bearing stops (43) for these projecting from the plate (60) to which they are fixed.
7. A lock according to Claim 1, characterized in that :
- the stator (2) is fixed to a disc (48), situated on the side of the capping plate (6) towards the bolt (11), which has a notch (21) in which can be caught a boss (19) fixed to a catch (17) articulated on the capping plate (6) and driven elastically against the disc (48) ;
- the disc (48) has a central opening through which a guide (49) fixed to the rotor (1) passes, and this guide receives internally a part (52) sliding axially and carrying the finger (10) which operates the bolt ;
- means are provided to automatically displace the part (52) carrying the finger (10) translationally in the guide (49) towards the rotor (1) when, as a result of an attempted irregular opening of the lock, the stator (2) and the disc (48) are entrained in rotation with the rotor (1) and the boss (19) comes out of its notch (21).
8. A lock according to Claim 7, characterized in that the said means for displacing the part (52) carrying the finger (10) translationally are constituted by a plate (55), articulated on the capping plate (6), in which an opening (57) is made to receive the part (54) supporting the finger (10), formed so as to fix this part (54) during axial translation to the plate (55), the end of which is elastically driven towards the capping plate and bears on a stud (61) fixed to the disc (48) in such a way that if the disc (48) and the stator (2) are entrained in rotation and the boss (19) of the catch (17) escapes from the notch (21), the end of the plate (55) disengages from the stud (61) and moves towards the capping plate (6) as a result of the action of an elastic element (62) fixed to the latter, which entrains the axial sliding in the guide (49) of the part (52) carrying the finger (10) which is then disconnected from the bolt (11).
9. A lock according to Claim 1, characterized in that it comprises :
- a disc (63) fixed coaxially to the stator (2) on the side of the capping plate (6) towards the bolt and a hollow cylindrical cam (64), in which notches (65) are formed, fixed to the disc (63) ;
- a part (66) mounted to slide axially in a guide (67) fixed to the end of the rotor (1) and fixed to a counter-cam (69) equipped with teeth (71) complementary to the notches (65), the support (72) of the finger (10) which operates the bolt also being fixed to this counter-cam (69), forming with the latter and the sliding part (66) a one-piece assembly displaceable in axial translation when it turns relative to the cam (64) ;
- a plate (73) parallel to the capping plate (6) pierced by a central opening (74) to receive the support (72) of the finger (10) and pulled back elastically towards the capping plate (6) by draw- springs (75) ;
- a catch (17) articulated on the side of the capping plate (6) towards the bolt (11), carrying a boss (19) which can be caught in a corresponding notch (21) of the disc (63), and pulled elastically towards the disc (63) by a spring (27) fixed to the capping plate (6) ;
- the cam (64) and the counter-cam (69) being nested in one another at rest as a result of the action of the plate (73), the rotation of the rotor (1) with a normal key causes rotation of the counter-cam (69) which then diverges from the cam (64) and displaces the finger (10) axially towards the bolt up to its position of entraining the latter, whereas in the case of an attempted irregular opening of the lock the rotation of the stator (2) entrains that of the disc (63) and of the cam (64) in such a way that the latter and the counter-cam (69) remain nested and the finger (10) remains in the same axial position, withdrawn relative to the bolt which it cannot entrain.
10. A lock according to Claim 1, characterized in that it comprises :
- a catch (17) articulated on the side of the capping plate (6) towards the bolt (11), carrying a boss (19) which can be caught in a corresponding notch (21) of a disc (76) fixed to a cylindrical part (77) extending in the hood (3) and fixed in rotation to the stator (2) ;
- a shaft (78) passing through the disc and the cylindrical part (77) one end (78a) of which is engaged in a sliding manner in the rotor (1) coaxially with the latter, whilst its opposite end carries the finger (10) which entrains the bolt (11) ;
- means to drive the shaft (78) and the finger (10) elastically towards the rotor (1) constituted, for example, by a flange (85) fixed to the shaft (78) passing through the disc (76) placed inside the cylindrical part (77) fixed to the stator (2) and pushed elastically like the shaft (78) towards the rotor (2) by an elastic element (84) coaxial with the said shaft and bearing on the disc (76) so as normally to keep the finger (10) withdrawn relative to the bolt.
11. A lock according to Claim 10, characterized in that it comprises a screen (87) held fixed and parallel to the capping plate at a set distance from the latter, pierced by a central opening (89) of a size to be slightly larger than a coaxial flange (86) equipping the support (79) of the finger (10) in order to enable, starting from the withdrawn position of the flange (86) and the finger (10), the axial displacement of this flange (86) through the central opening (89) and of the finger (10) towards the bolt in the case of normal opening of the lock, and to oppose this displacement in the case of forced rotation of the stator (2) resulting from an insufficient pushing in of an appropriate key followed by a complete insertion during rotation with blocking, the screen (87) then forming a stop to arrest axial movement of the flange (86) and the finger (10) which turn integrally with the stator (2) around the axis (Y-Y) of the latter, which enables a rotation to be achieved at the end of which the key can be pushed in normally and the lock opened.
EP85400150A 1984-01-31 1985-01-30 Safety lock, fitted to prevent its fraudulent opening Expired EP0151081B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85400150T ATE38536T1 (en) 1984-01-31 1985-01-30 SECURITY LOCK DETECTED AGAINST FRAUDULENT OPENING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8401498 1984-01-31
FR8401498A FR2558883B1 (en) 1984-01-31 1984-01-31 LOCK WITH ADDED SAFETY BLOCK, ARRANGED TO PREVENT ITS FRAUDULENT OPENING

Publications (3)

Publication Number Publication Date
EP0151081A2 EP0151081A2 (en) 1985-08-07
EP0151081A3 EP0151081A3 (en) 1985-12-11
EP0151081B1 true EP0151081B1 (en) 1988-11-09

Family

ID=9300638

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85400150A Expired EP0151081B1 (en) 1984-01-31 1985-01-30 Safety lock, fitted to prevent its fraudulent opening

Country Status (4)

Country Link
EP (1) EP0151081B1 (en)
AT (1) ATE38536T1 (en)
DE (1) DE3566134D1 (en)
FR (1) FR2558883B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4233029A1 (en) * 1992-10-01 1994-04-07 Valeo Deutschland Gmbh & Co Locking cylinder

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2620755A2 (en) * 1984-01-31 1989-03-24 Dupart Jean Lock with an attached safety unit arranged to prevent its fraudulent opening
US4773240A (en) * 1986-10-20 1988-09-27 Best Lock Corporation Lock with force-override assembly
FR2631067B1 (en) * 1988-05-04 1991-02-08 Neiman Sa RELEASABLE ROTOR LOCK
FR2642463B1 (en) * 1989-01-30 1991-03-29 Neiman Sa RELEASABLE LOCK WITH ROTATING STATOR
US5010755A (en) * 1989-11-20 1991-04-30 Best Lock Corporation Lock with torque-release means
DE4330980A1 (en) * 1993-09-13 1995-03-16 Valeo Deutschland Gmbh & Co Device for a locking stop between two parts, in particular for a motor vehicle lock
US5794472A (en) * 1995-05-01 1998-08-18 Best Lock Corporation Disconnecting drive mechanism for cylindrical lockset
DE102007023458A1 (en) * 2007-05-19 2008-11-20 Huf Hülsbeck & Fürst Gmbh & Co. Kg Lock cylinder for executable especially in a vehicle functions

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1046542A (en) * 1951-12-19 1953-12-07 Security device for cylinder locks
GB2005335B (en) * 1977-09-08 1982-02-03 Willenhall Ltd L & F Lock

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4233029A1 (en) * 1992-10-01 1994-04-07 Valeo Deutschland Gmbh & Co Locking cylinder
DE4233029C2 (en) * 1992-10-01 2001-10-04 Valeo Deutschland Gmbh & Co Locking cylinder

Also Published As

Publication number Publication date
FR2558883B1 (en) 1987-02-27
EP0151081A3 (en) 1985-12-11
EP0151081A2 (en) 1985-08-07
FR2558883A1 (en) 1985-08-02
DE3566134D1 (en) 1988-12-15
ATE38536T1 (en) 1988-11-15

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