EP3498944B1 - Key and cylinder for security lock - Google Patents

Key and cylinder for security lock Download PDF

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Publication number
EP3498944B1
EP3498944B1 EP18212442.0A EP18212442A EP3498944B1 EP 3498944 B1 EP3498944 B1 EP 3498944B1 EP 18212442 A EP18212442 A EP 18212442A EP 3498944 B1 EP3498944 B1 EP 3498944B1
Authority
EP
European Patent Office
Prior art keywords
rotor
key
stator
housing
movable element
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.)
Active
Application number
EP18212442.0A
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German (de)
French (fr)
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EP3498944A1 (en
Inventor
Stéphane CHOQUET
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thirard SAS
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Thirard SAS
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Publication of EP3498944A1 publication Critical patent/EP3498944A1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
    • E05B27/0057—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with increased picking resistance
    • E05B27/006—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with increased picking resistance whereby a small rotation without the correct key blocks further rotation of the rotor
    • E05B27/0064—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with increased picking resistance whereby a small rotation without the correct key blocks further rotation of the rotor whereby the rotor is irreversibly blocked or can only be moved back with an authorized tool or key
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • E05B19/0017—Key profiles
    • E05B19/0041—Key profiles characterized by the cross-section of the key blade in a plane perpendicular to the longitudinal axis of the key
    • E05B19/0052—Rectangular flat keys
    • E05B19/0058—Rectangular flat keys with key bits on at least one wide side surface of the key
    • E05B19/0064—Rectangular flat keys with key bits on at least one wide side surface of the key and with additional key bits on at least one narrow side edge of the key
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
    • E05B27/0042—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with additional key identifying function, e.g. with use of additional key operated rotor-blocking elements, not of split pin tumbler type
    • 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
    • E05B17/0062—Fraction or shear lines; Slip-clutches, resilient parts or the like for preventing damage when forced or slammed with destructive disengagement

Definitions

  • the invention relates to the field of security cylinders and associated keys aimed at improving the security of locks.
  • Safety cylinders or barrels are made up of a stator, which constitutes the fixed part, and a mobile cylindrical rotor.
  • the stator conventionally contains pins mounted on springs, which in the absence of a key can protrude into the rotor and block its rotation.
  • the rotor contains a slot adapted to receive the key body, to the right of which are arranged rotor pins which rest on the stator pins. When the corresponding key is inserted, the teeth of the key body push back the rotor pins so that the junction between the rotor pins and the stator pins coincides with the junction between the rotor and the stator: the rotor can then rotate and operate a locking or unlocking mechanism.
  • This tumbler lock system is subject to several weaknesses.
  • the pinned cylinder system can be picked by an individual managing to align the pins with the rotor-stator junction using basic picking means.
  • the document US5050412 presents a device where balls are held by as many pins in housings extending both in the rotor and in the stator, the balls thus blocking the rotation of the rotor. Inserting a suitably shaped key pushes the pins back, which changes the position of the balls which then become tangent to the rotor-stator junction, allowing the rotor to turn.
  • the key used by this invention is not particularly complex to reproduce. By elsewhere, a key with the right profile thickness will be able to enter the key slot and push back the pins, picking therefore not being sufficiently complex because of the system.
  • the document FR2492872 provides a key having a groove at the bottom of which a bore is made. A ball is retained inside the housing formed by the bore. When the key is inserted, the ball is pushed transversely by a positioning device, and pushes back a pin to position it at the roto-stator interface and thus unlock the rotation of the rotor. Such a device provides access to satisfactory levels of key reproduction and picking difficulty. Nevertheless, the key is then complex and expensive because its body has a groove ending in a bore opening on the other side of the key body, a ball placed in the housing of the key body, means for retaining this ball at the inside its housing and sometimes even the positioning member itself.
  • the document US 4,213,316 discloses a lock device comprising a stator, a rotor and a key.
  • the rotor comprising a slot as well as two housings located on each side of the slot, each housing accommodating a movable element.
  • the present invention makes it possible to respond at least partially to the problems raised in the preceding paragraphs.
  • One of the aims of the invention is to describe a key having a high level of reproduction difficulty.
  • Another object of the invention is to propose a device making it possible to greatly complicate the picking of the lock that it equips.
  • Another object of the invention is that this device be simple and inexpensive.
  • the key to such a device has a high level of difficulty in reproduction. Indeed, the exact reproduction of the groove of the key body, its position and its extent over several dimensions, is extremely complex and would require much more specific equipment than the key cutting machines with which craftsmen are equipped.
  • the rotor comprises a slot for receiving a key body, and at least one housing accommodating at least one movable element, said movable element being moved within the housing when inserting the key so as to reach a position at the interface between the rotor and the stator.
  • the rotor may comprise two housings located on each side of the key body receiving slot, each housing accommodating a movable element.
  • the lock stator comprises at least one locking part adapted so that when the corresponding key is completely inserted into the cylinder, the junction between the movable element and the locking part corresponds to the interface between the rotor and the stator, the movable element then preventing the locking part from descending into its housing during rotation of the rotor.
  • a key for a safety lock may comprise a key body and a key head.
  • the key comprises at least one guide groove extending over at least a part of the key body, in its length and in its height, groove in which the movable element engages during insertion of the key in the cylinder and with which it then cooperates to be moved within its housing until it reaches a position at the interface between the rotor and the stator and thus allows rotation of the rotor.
  • the guide grooves of this key can be two in number, located on each side of the key body.
  • the key is dimensioned such that when it is introduced to its stop, the movable element guided by the grooves is positioned at the interface between the rotor and the stator.
  • the device for safety lock represented on the figures 1a, 1b , 2 and 3 comprises a cylindrical rotor 1, a stator 11 and a key 18.
  • the rotor 1 is preferably a substantially cylindrical body.
  • the rotor 1 can be a substantially cylindrical body of revolution around a longitudinal axis.
  • a radial direction is a direction perpendicular to the longitudinal axis and passing through it.
  • the terms internal and external, respectively, are used with reference to a radial direction so that the internal part or face of an element is closer to the longitudinal axis than the internal part or face. external of the same element.
  • the rotor 1 includes a slot 2 for receiving a key body. Slot 2 is adapted to receive a key 18. Rotor 1 may also include rotor pins 3, an embrittlement groove 4a which constitutes anti-burglary protection, as well as a part 4b surmounted by the cylinder bit 9.
  • the rotor 1 also comprises at least one housing 5 receiving at least one movable element 8, which is for example a spherical ball.
  • the housing 5 is in this embodiment positioned opposite the rotor pin 3 closest to the cylinder bit 9.
  • the housing 5 present in the example illustrated in figure 1b a position on the longitudinal axis substantially similar to the position on the longitudinal axis of the rotor pin 3.
  • the spherical bottom 6 and the guide part 7 extend transversely, that is to say radially, with respect to the main direction of the cylinder of the rotor 1, in this case parallel to the plane of the receiving slot 2.
  • the bottom 6 and the guide part 7 are obtained respectively by drilling and milling the rotor 1 according to dimensions allowing them to ensure the reception and the guiding of the mobile element 8.
  • the movable element 8 can pass from one retracted or flush position to the other by a translation in the radial direction.
  • the diameter of the spherical bottom 6 is substantially equal to that of the ball 8; the guide part 7 can itself be a housing of parallelepiped shape and of width substantially equal to the diameter of the ball 8.
  • the housings 5 are two in number, are located on each side of the key slot 2 and each accommodate a spherical ball 8.
  • the cylindrical body 11b preferably has the same axis of revolution as the rotor 1, namely the longitudinal axis, and is preferably in the shape of a hollow cylinder defining a substantially cylindrical cavity.
  • the rotor 1 is intended to be placed inside the cavity delimited by the cylindrical body 11a of the stator 11.
  • Said part 11b is provided with a notch 12 to allow rotation of the cylinder bit 9.
  • the part 11b can comprise one or more housings 15.
  • a housing 15 of the stator 11 can in particular extend radially with respect to the longitudinal axis and emerge at the interface 10 between the rotor 1 and the stator 11.
  • the stator pins 13 are received in the cylindrical housings 15 which extend in the said part 11b, radially with respect to the axis of the rotor 1. More particularly, these housings 15 extend from the bottom of the said part 11b (bottom opposite the rotor 1), over the entire height thereof, to emerge from said part 11b and from the stator 11 at the interface 10 between the rotor 1 and the stator 11.
  • the housings 15 extend from the bottom of said part 11b, over the entire height thereof, to emerge from said part 11b, through the body cylindrical 11a of stator 11 until it emerges at interface 10 between rotor 1 and stator 11.
  • housings 15 also receive springs 14a which exert thrust forces on the pins 13. These springs 14a rest on fasteners 14b which close the housings 15 at the bottom of the part 11b.
  • a housing 5 of rotor 1 is arranged so as to be located opposite housing 15 of stator 11 on the longitudinal axis.
  • the housing 5 of rotor 1 arrives opposite the housing 15 of stator 11.
  • a housing 5 of rotor 1 can be substantially radially opposed to a housing 15 of stator 11.
  • housing 5 of rotor 1 arrives opposite the housing 15 of stator 11 for an angle substantially equal to 180 °.
  • housing 5 of rotor 1 adjoins housing 15 of stator 11 at interface 10 between rotor 1 and stator 11.
  • one of the stator pins 13 is the locking piece 16.
  • the stator pin 13 which is closest to the cylinder bit 9 has been referenced by 16 and constitutes a locking part intended to cooperate with the ball or balls 5 or other movable elements 8, as presented later in the following. of the description.
  • locking piece 16 may be another stator pin 13, or a separate piece added to stator 11.
  • the device also comprises a key 18 composed of a key head 19, a key body 21 and a key stop 20.
  • the key body 21 may according to a preferred embodiment have indentations 22.
  • the key has at least one guide groove 23 along which the movable element(s) 8 can move.
  • the indentations 22 are preferably adapted to push back the rotor pins 3 when inserting the key 18 into the slot 2, so that once the key 18 is fully inserted, the junction between the rotor pins 3 and the stator pins 13 coincide with the junction 10 between the rotor 1 and the stator 11.
  • a mobile element 8 can in particular slide along a guide groove 23.
  • the sliding of the mobile element 8 in the groove 23 can take place by a translation of the mobile element 8, by a rotation of the element mobile 8, or by a movement having both a component of translation and rotation.
  • the guide groove 23 extends over at least a part of the key body 21, in its length and in its height.
  • the guide groove 23 has a longitudinal component and a radial component.
  • the longitudinal and radial components are adapted to move the movable element 8 from the retracted position to the flush position as the key 18 is inserted into the slot 2 of the rotor 1, the movable element 8 being, when the key 18 is fully inserted, held in the flush position by the guide groove 23.
  • the groove 23 preferably extends over all or part of the key body 21, and has a first end and a second end. Preferably, the second end of the groove 23 opens outside the key body 21.
  • the radial component of the groove 23, or height, can be such that the second end of the groove 23 is located in a radially more internal position than its first end. In this way, as the key 18 is inserted into the slot 2, the movable element 8 is moved from the radially more internal retracted position to the radially more external flush position.
  • a slope of the guide groove 23 can be defined as a ratio between the radial component of the groove 23 and the component longitudinal of the groove 23.
  • the slope may vary as a function of a position along the longitudinal axis, continuously, monotonically or not monotonously, or discontinuously.
  • the slope of the groove 23 makes it possible to move the mobile element 8 radially towards the outside of the rotor 1 during the insertion of the key 17.
  • the guide groove 23 can consist of a recess which can be milled in the key body 21.
  • the device comprises two movable elements 8 in the form of spherical balls and the key 18 comprises two guide grooves 23, milled on each side of the key body 21.
  • the grooves 23 may extend over a more or less large part of the key body 21, depending in particular on the position on the axis of the cylinder of the housing or housings 5 of rotor 1.
  • the grooves 23 open out at the end of the key body 21 so that the balls 8 present do not interfere with the introduction of the key 18.
  • the grooves 23 extend both in the length and in the height of the key body 21, according to dimensions capable of positioning the balls 8 along the rotor-stator junction 10.
  • the distance between the center of the ball 8 and the edge of the key body 21 opposite the indentations 22 can be of the order of 1 to 5 mm, and more particularly can about 2.8 mm.
  • the distance between the center of the ball 8 and the edge of the key body 21 opposite the indentations 22 can be of the order of 1 to 3 mm, and more particularly can be around 1.9 mm.
  • geometries other than those of a flat key with indentations could be envisaged.
  • the movable element 8 is located inside the housing 5 of the rotor 1, in the retracted position.
  • the movable element 8 may in particular be in contact with the spherical bottom 6 of the housing 5 of the rotor 1.
  • the movable element 8 engages on the guide groove 23.
  • the movable element 8 then cooperates with the groove 23 to be moved inside the housing 5 of the rotor 1.
  • the movable element 8 can be moved according to a radial translation towards the outside of the rotor 1, from the retracted position to the flush position.
  • the movable element 8 When the key 18 is fully inserted into the slot 2, the movable element 8 is in the flush position. Furthermore, the indentations 22 present on the key body 21 allow the junction between the rotor pins 3 and the stator pins 13 to coincide with the junction 10 between the rotor 1 and the stator 11. The rotation of the rotor 1 can then be initiated. by operating key 18.
  • Such a device allows a blocking of the rotation of the rotor 1 in the event of insertion of a wrong key without requiring other elements than the movable element 8.
  • the mobile elements 8 are two in number and contained inside the housings 5 of the rotor 1, which can be balls according to a preferred embodiment of the invention, rest in the absence of key 18 in the spherical bottoms 6 of their housings 5.
  • the balls 8 are also moved transversely, i.e. radially, in their seats 5 along the component of the guide groove 23 which is perpendicular to the axis of the rotor cylinder 1.
  • the operation of the key 18 can then actuate the rotation of the rotor 1 until the locking part 16 located in the stator 11 reaches, according to the direction of rotation and as illustrated in figure 6 , opposite one or other of the rotor housings 5 containing the moving elements 8.
  • the ball 8 is then free in its housing 5, its position not being blocked by the guide groove 23.
  • the housing 5 of the rotor 1 arrives opposite the housing 15 of the stator 11, the locking part 16 pushed back by its spring 14a will then descend into the housing 5 of the ball 8, pushing it into the bottom of the housing 5, and will therefore protrude into the rotor 1.
  • the locking part 16 will then be in the locking position. The rotation of the cylinder will be blocked.

Description

DOMAINE TECHNIQUE GÉNÉRAL ET ART ANTÉRIEURGENERAL TECHNICAL FIELD AND PRIOR ART

L'invention concerne le domaine des cylindres de sûreté et des clés associées visant à améliorer la sûreté des serrures.The invention relates to the field of security cylinders and associated keys aimed at improving the security of locks.

Les cylindres ou barillets de sûreté sont composés d'un stator, qui constitue la partie fixe, et d'un rotor cylindrique mobile. Le stator contient classiquement des goupilles montées sur des ressorts, qui en l'absence de clé peuvent dépasser dans le rotor et en bloquer la rotation. Le rotor contient une fente adaptée à la réception du corps de clé, au droit de laquelle sont disposées des goupilles de rotor qui reposent sur les goupilles de stator. A l'introduction de la clé correspondante, les dents du corps de clé repoussent les goupilles de rotor de sorte à ce que la jonction entre les goupilles de rotor et les goupilles de stator coïncide avec la jonction entre le rotor et le stator : le rotor peut alors tourner et actionner un mécanisme de verrouillage ou de déverrouillage.Safety cylinders or barrels are made up of a stator, which constitutes the fixed part, and a mobile cylindrical rotor. The stator conventionally contains pins mounted on springs, which in the absence of a key can protrude into the rotor and block its rotation. The rotor contains a slot adapted to receive the key body, to the right of which are arranged rotor pins which rest on the stator pins. When the corresponding key is inserted, the teeth of the key body push back the rotor pins so that the junction between the rotor pins and the stator pins coincides with the junction between the rotor and the stator: the rotor can then rotate and operate a locking or unlocking mechanism.

Ce système de serrures à goupilles est soumis à plusieurs faiblesses.This tumbler lock system is subject to several weaknesses.

D'une part, il est facile à un artisan équipé de machines à tailler les clés de reproduire le profil des dents du corps de clé.On the one hand, it is easy for a craftsman equipped with key cutting machines to reproduce the profile of the teeth of the key body.

D'autre part, le système de cylindres à goupilles peut être crocheté par un individu parvenant à aligner les goupilles avec la jonction rotor-stator à l'aide de moyens de crochetage basiques.On the other hand, the pinned cylinder system can be picked by an individual managing to align the pins with the rotor-stator junction using basic picking means.

L'invention présentée ci-dessous permet de résoudre ces deux problématiques.The invention presented below makes it possible to solve these two problems.

Le document US5050412 présente un dispositif où des billes sont maintenues par autant de goupilles dans des logements s'étendant à la fois dans le rotor et dans le stator, les billes bloquant ainsi la rotation du rotor. L'introduction d'une clé de forme appropriée repousse les goupilles, ce qui modifie la position des billes qui deviennent alors tangentes à la jonction rotor-stator, permettant au rotor de tourner. Cependant, la clé utilisée par cette invention n'est pas particulièrement complexe à reproduire. Par ailleurs, une clé présentant la bonne épaisseur de profil pourra entrer dans la fente à clé et repousser les goupilles, le crochetage n'étant donc pas suffisamment complexifié parce système.The document US5050412 presents a device where balls are held by as many pins in housings extending both in the rotor and in the stator, the balls thus blocking the rotation of the rotor. Inserting a suitably shaped key pushes the pins back, which changes the position of the balls which then become tangent to the rotor-stator junction, allowing the rotor to turn. However, the key used by this invention is not particularly complex to reproduce. By elsewhere, a key with the right profile thickness will be able to enter the key slot and push back the pins, picking therefore not being sufficiently complex because of the system.

Le document FR2492872 prévoit une clé comportant une rainure au fond de laquelle un alésage est effectué. Une bille est retenue à l'intérieur du logement formé par l'alésage. À l'introduction de la clé, la bille est poussée transversalement par un organe de positionnement, et repousse une goupille pour la positionner à l'interface roto-stator et ainsi débloquer la rotation du rotor. Un tel dispositif permet d'accéder à des niveaux de difficulté de reproduction de la clé et de crochetage satisfaisants. Néanmoins, la clé est alors complexe et coûteuse car son corps comporte une rainure terminée par un alésage débouchant de l'autre côté du corps de clé, une bille placée dans le logement du corps de clé, des moyens de retenue de cette bille à l'intérieur de son logement et parfois même l'organe de positionnement lui-même.The document FR2492872 provides a key having a groove at the bottom of which a bore is made. A ball is retained inside the housing formed by the bore. When the key is inserted, the ball is pushed transversely by a positioning device, and pushes back a pin to position it at the roto-stator interface and thus unlock the rotation of the rotor. Such a device provides access to satisfactory levels of key reproduction and picking difficulty. Nevertheless, the key is then complex and expensive because its body has a groove ending in a bore opening on the other side of the key body, a ball placed in the housing of the key body, means for retaining this ball at the inside its housing and sometimes even the positioning member itself.

Le document US 5 964 112 prévoit un élément trapézoïdal situé dans un logement s'étendant à la fois dans le rotor et dans le stator.The document US 5,964,112 provides a trapezoidal element located in a housing extending both in the rotor and in the stator.

Le document US 4 213 316 divulgue un dispositif pour serrure comprenant un stator, un rotor et une clé. Le rotor comportant une fente ainsi que deux logements situés de chaque côté de la fente, chaque logement accueillant un élément mobile.The document US 4,213,316 discloses a lock device comprising a stator, a rotor and a key. The rotor comprising a slot as well as two housings located on each side of the slot, each housing accommodating a movable element.

PRÉSENTATION GÉNÉRALE DE L'INVENTIONGENERAL PRESENTATION OF THE INVENTION

La présente invention permet de répondre au moins partiellement aux problématiques soulevées dans les paragraphes précédents.The present invention makes it possible to respond at least partially to the problems raised in the preceding paragraphs.

L'un des buts de l'invention est de décrire une clé présentant un niveau élevé de difficulté de reproduction.One of the aims of the invention is to describe a key having a high level of reproduction difficulty.

Un autre but de l'invention est de proposer un dispositif permettant de complexifier grandement le crochetage de la serrure qu'il équipe.Another object of the invention is to propose a device making it possible to greatly complicate the picking of the lock that it equips.

Un autre but de l'invention est que ce dispositif soit simple et peu coûteux.Another object of the invention is that this device be simple and inexpensive.

Selon un premier aspect, l'invention décrit un dispositif pour serrure de sûreté composé :

  • d'un rotor comportant une fente pour la réception d'un corps de clé et au moins un logement capable d'accueillir au moins un élément mobile,
  • d'une clé comportant au moins une rainure de guidage le long de laquelle l'élément mobile peut se déplacer, et
  • d'un stator comportant au moins une pièce de verrouillage coopérant avec ledit élément mobile dans certaines positions de la clé, tel que la rainure de guidage s'étend sur au moins une partie du corps de clé, dans sa longueur et dans sa hauteur, tel qu'en l'absence de clé, l'élément mobile est contenu à l'intérieur du logement présent dans le rotor, tel que cet élément mobile s'engage sur la rainure de guidage présente sur la clé lors de l'insertion de celle-ci dans le cylindre et tel qu'il coopère ensuite avec la rainure pour être déplacé au sein du logement, jusqu'à une position où la jonction entre l'élément mobile et la pièce de verrouillage correspond à l'interface entre le rotor et le stator, l'élément mobile empêchant alors la pièce de verrouillage de descendre dans son logement lors de la rotation du rotor.
According to a first aspect, the invention describes a device for a safety lock consisting of:
  • a rotor comprising a slot for receiving a key body and at least one housing capable of receiving at least one movable element,
  • a key having at least one guide groove along which the movable element can move, and
  • a stator comprising at least one locking part cooperating with said movable element in certain positions of the key, such that the guide groove extends over at least part of the key body, in its length and in its height, such that, in the absence of a key, the movable element is contained inside the housing present in the rotor, such that this movable element engages on the guide groove present on the key during the insertion of the latter in the cylinder and such that it then cooperates with the groove to be moved within the housing, to a position where the junction between the movable element and the locking part corresponds to the interface between the rotor and the stator, the movable element then preventing the locking part from descending into its housing during rotation of the rotor.

La clé d'un tel dispositif présente un niveau élevé de difficulté de reproduction. En effet, la reproduction exacte de la rainure du corps de clé, de sa position et de son étendue sur plusieurs dimensions, est extrêmement complexe et requerrait des équipements bien plus spécifiques que les machines à tailler les clés dont les artisans sont équipés.The key to such a device has a high level of difficulty in reproduction. Indeed, the exact reproduction of the groove of the key body, its position and its extent over several dimensions, is extremely complex and would require much more specific equipment than the key cutting machines with which craftsmen are equipped.

Par ailleurs, le crochetage d'un tel dispositif est très complexifié. En effet, une clé dont le corps ne comporte pas de rainure sera bloquée dans son introduction par l'éléments mobile. En l'absence de clé, ou avec une clé dont la rainure ne respecte pas tous les critères mentionnés, même si un individu parvient à aligner toutes les goupilles et que le rotor amorce sa rotation, la position de l'élément mobile dans son logement ne sera pas contrainte et lorsque la pièce de verrouillage se retrouvera en face du logement, elle y pénètrera et la rotation s'en retrouvera bloquée.Furthermore, the picking of such a device is very complex. Indeed, a key whose body does not include a groove will be blocked in its introduction by the moving elements. In the absence of a key, or with a key whose groove does not meet all the criteria mentioned, even if an individual manages to align all the pins and the rotor begins to rotate, the position of the mobile element in its housing will not be constrained and when the locking part finds itself in front of the housing, it will enter it and the rotation will be blocked.

Enfin, ce système est simple et peu coûteux en comparaison à l'art antérieur évoqué dans la section précédente.Finally, this system is simple and inexpensive compared to the prior art mentioned in the previous section.

Selon un mode de réalisation préféré, un tel dispositif peut être avantageusement complété par les caractéristiques suivantes, prises seules ou en combinaison :

  • Le rotor comprend deux logements situés de chaque côté de la fente de réception du corps de clé, ces deux logements recevant deux éléments mobiles coopérant avec deux rainures de guidage situées de chaque côté du corps de clé. Ainsi, les éléments mobiles n'étant pas situés dans l'axe de la fente d'introduction du corps de clé comme le sont les goupilles mais de chaque côté de cette fente, l'accès en est complexifié et le crochetage est rendu plus difficile. Par ailleurs, avoir deux rainures de chaque côté du corps de clé permet aux éléments mobiles de coulisser le long des rainures pour permettre l'enfoncement de la clé, et d'être déplacés vers le haut jusqu'à être tangents à la jonction entre le rotor et le stator.
  • Un élément mobile est une bille sphérique. Une bille sphérique est une pièce standard, facile à fabriquer et mécaniquement simple, ce qui permet de minimiser les coûts de fabrication du dispositif.
  • La pièce de verrouillage est une goupille de stator cylindrique montée sur un ressort. Cela permet d'avoir un dispositif simple, qui utilise avantageusement les goupilles de stator déjà existantes. Par ailleurs, en l'absence de clé appropriée, le ressort repoussera la goupille dans le logement de rotor, ce qui bloquera la rotation de ce dernier.
  • La pièce de verrouillage est située dans le plan orthogonal à l'axe du cylindre et passant par le centre du ou des éléments mobiles. Cela permettra aux logements accueillant les éléments mobiles de se retrouver, lors de la rotation du rotor, en face de la pièce de verrouillage et donc d'autoriser la rotation uniquement si la clé a précisément les caractéristiques correspondant au dispositif.
According to a preferred embodiment, such a device can be advantageously supplemented by the following characteristics, taken alone or in combination:
  • The rotor comprises two housings located on each side of the slot for receiving the key body, these two housings receiving two movable elements cooperating with two guide grooves located on each side of the key body. Thus, the movable elements not being located in the axis of the key body insertion slot as are the pins but on each side of this slot, access is made more complex and picking is made more difficult. . Furthermore, having two grooves on each side of the key body allows the movable elements to slide along the grooves to allow the key to be driven in, and to be moved upwards until they are tangent to the junction between the rotor and stator.
  • A moving element is a spherical ball. A spherical ball is a standard part, easy to manufacture and mechanically simple, which makes it possible to minimize the manufacturing costs of the device.
  • The locking part is a cylindrical stator pin mounted on a spring. This makes it possible to have a simple device, which advantageously uses the already existing stator pins. Furthermore, in the absence of a suitable key, the spring will push the pin back into the rotor housing, which will block the rotation of the latter.
  • The locking part is located in the plane orthogonal to the axis of the cylinder and passing through the center of the movable element(s). This will allow the housings accommodating the moving elements to find themselves, during the rotation of the rotor, opposite the locking part and therefore to authorize rotation only if the key has precisely the characteristics corresponding to the device.

Selon l'invention, le rotor comporte une fente pour la réception d'un corps de clé, et au moins un logement accueillant au moins un élément mobile, ledit élément mobile étant déplacé au sein du logement lors de l'insertion de la clé de façon à atteindre une position à l'interface entre le rotor et le stator.According to the invention, the rotor comprises a slot for receiving a key body, and at least one housing accommodating at least one movable element, said movable element being moved within the housing when inserting the key so as to reach a position at the interface between the rotor and the stator.

Le rotor peut comprendre deux logements situés de chaque côté de la fente de réception du corps de clé, chaque logement accueillant un élément mobile.The rotor may comprise two housings located on each side of the key body receiving slot, each housing accommodating a movable element.

Selon l'invention le stator de serrure comporte au moins une pièce de verrouillage adaptée de façon à ce que lorsque la clé correspondante est complètement insérée dans le cylindre, la jonction entre l'élément mobile et la pièce de verrouillage corresponde à l'interface entre le rotor et le stator, l'élément mobile empêchant alors la pièce de verrouillage de descendre dans son logement lors de la rotation du rotor.According to the invention, the lock stator comprises at least one locking part adapted so that when the corresponding key is completely inserted into the cylinder, the junction between the movable element and the locking part corresponds to the interface between the rotor and the stator, the movable element then preventing the locking part from descending into its housing during rotation of the rotor.

Ledit stator peut être avantageusement complété par les caractéristiques suivantes, prises seules ou en combinaison :

  • La pièce de verrouillage est située dans le plan orthogonal à l'axe du cylindre et passant par le centre du ou des éléments mobiles.
  • La pièce de verrouillage est une goupille de stator cylindrique montée sur un ressort.
Said stator can advantageously be supplemented by the following characteristics, taken alone or in combination:
  • The locking part is located in the plane orthogonal to the axis of the cylinder and passing through the center of the movable element(s).
  • The locking part is a cylindrical stator pin mounted on a spring.

Selon un mode de réalisation, une clé pour serrure de sûreté peut comporter un corps de clé et une tête de clé. Selon l'invention, la clé comporte au moins une rainure de guidage s'étendant sur au moins une partie du corps de clé, dans sa longueur et dans sa hauteur, rainure dans laquelle l'élément mobile s'engage lors de l'insertion de la clé dans le cylindre et avec laquelle il coopère ensuite pour être déplacé au sein de son logement jusqu'à atteindre une position à l'interface entre le rotor et le stator et ainsi permettre la rotation du rotor.According to one embodiment, a key for a safety lock may comprise a key body and a key head. According to the invention, the key comprises at least one guide groove extending over at least a part of the key body, in its length and in its height, groove in which the movable element engages during insertion of the key in the cylinder and with which it then cooperates to be moved within its housing until it reaches a position at the interface between the rotor and the stator and thus allows rotation of the rotor.

Les rainures de guidage de cette clé peuvent être au nombre de deux, situées de chaque côté du corps de clé. La clé est dimensionnée de telle sorte à ce que lorsqu'elle est introduite jusqu'à sa butée, l'élément mobile guidé par les rainures soit positionné à l'interface entre le rotor et le stator.The guide grooves of this key can be two in number, located on each side of the key body. The key is dimensioned such that when it is introduced to its stop, the movable element guided by the grooves is positioned at the interface between the rotor and the stator.

D'autres aspects, buts et avantages de l'invention apparaîtront à la lecture de la description qui suit de ses modes de réalisation, donnée à titre purement illustratif et non limitatif, qui sera illustrée par les figures suivantes :

  • Les figures 1a et 1b sont des vues schématiques d'un rotor comportant deux logements de chaque côté de la fente d'insertion de la clé, ainsi que de deux éléments mobiles sous la forme de billes, qui seront placées dans ces logements.
  • La figure 2 est une vue schématique d'un stator comprenant un logement contenant une pièce de verrouillage sous la forme d'une goupille cylindrique montée sur un ressort.
  • La figure 3 illustre l'invention à partir de l'exemple d'une clé plate crantée, dont le corps comporte deux rainures de guidage. Deux éléments mobiles sont également représentés à l'extrémité des rainures.
  • La figure 4 est une vue schématique d'un cylindre de sûreté et de la clé correspondante au début de son insertion, illustrant la position initiale des éléments mobiles dans leurs logements de rotor.
  • La figure 5 est une vue schématique d'un rotor et de la clé correspondante une fois insérée, illustrant que dans sa position finale, l'élément mobile est tangent à l'interface entre le rotor et le stator.
  • La figure 6 est une vue schématique d'un cylindre une fois la clé pleinement insérée et la rotation du rotor amorcée, l'élément mobile étant alors positionné en face de la pièce de verrouillage.
  • La figure 7a est une coupe transversale d'un cylindre au niveau des logements de rotor lors de conditions d'effraction, la rotation étant amorcée, l'élément mobile libre dans son logement étant alors repoussé par la pièce de verrouillage qui pénètre dans son logement. La figure 7b est une coupe transversale d'un cylindre au niveau des logements de rotor, la clé correspondante étant insérée et la rotation étant amorcée, l'élément mobile tangent à l'interface entre le rotor et le stator empêchant alors la pièce de verrouillage de pénétrer à l'intérieur de son logement.
Other aspects, aims and advantages of the invention will appear on reading the following description of its embodiments, given purely by way of illustration and not limitation, which will be illustrated by the following figures:
  • The figures 1a and 1b are schematic views of a rotor comprising two housings on each side of the key insertion slot, as well as two movable elements in the form of balls, which will be placed in these housings.
  • The figure 2 is a schematic view of a stator comprising a housing containing a locking part in the form of a cylindrical pin mounted on a spring.
  • The picture 3 illustrates the invention from the example of a notched flat key, the body of which comprises two guide grooves. Two movable elements are also shown at the end of the grooves.
  • The figure 4 is a schematic view of a safety cylinder and the corresponding key at the start of its insertion, illustrating the initial position of the movable elements in their rotor housings.
  • The figure 5 is a schematic view of a rotor and the corresponding key once inserted, illustrating that in its final position, the movable element is tangent to the interface between the rotor and the stator.
  • The figure 6 is a schematic view of a cylinder once the key has been fully inserted and the rotation of the rotor has begun, the movable element then being positioned opposite the locking part.
  • The figure 7a is a cross section of a cylinder at the level of the rotor housings during break-in conditions, the rotation being initiated, the mobile element free in its housing then being pushed back by the locking part which penetrates into its housing. The figure 7b is a transverse section of a cylinder at the level of the rotor housings, the corresponding key being inserted and the rotation being initiated, the movable element tangent to the interface between the rotor and the stator then preventing the locking part from penetrating inside its housing.

DESCRIPTION D'UN MODE DE MISE EN ŒUVRE ET DE RÉALISATIONDESCRIPTION OF A MODE OF IMPLEMENTATION AND REALIZATION GénéralitésGeneral

Le dispositif pour serrure de sûreté représenté sur les figures 1a, 1b, 2 et 3 comprend un rotor cylindrique 1, un stator 11 et une clé 18.The device for safety lock represented on the figures 1a, 1b , 2 and 3 comprises a cylindrical rotor 1, a stator 11 and a key 18.

Le rotor 1 est de préférence un corps sensiblement cylindrique. Notamment, le rotor 1 peut être un corps sensiblement cylindrique de révolution autour d'un axe longitudinal. Une direction radiale est une direction perpendiculaire à l'axe longitudinal et passant par lui. Dans la suite de la demande, les termes interne et externe, respectivement, sont utilisés en référence à une direction radiale de sorte que la partie ou la face interne d'un élément est plus proche de l'axe longitudinal que la partie ou la face externe du même élément.The rotor 1 is preferably a substantially cylindrical body. In particular, the rotor 1 can be a substantially cylindrical body of revolution around a longitudinal axis. A radial direction is a direction perpendicular to the longitudinal axis and passing through it. In the rest of the application, the terms internal and external, respectively, are used with reference to a radial direction so that the internal part or face of an element is closer to the longitudinal axis than the internal part or face. external of the same element.

Le rotor 1 comprend une fente de réception 2 d'un corps de clé. La fente 2 est adaptée pour recevoir une clé 18. Le rotor 1 peut également comprendre des goupilles de rotor 3, une rainure de fragilisation 4a qui constitue une protection anti effraction, ainsi qu'une partie 4b surmontée du panneton de cylindre 9.The rotor 1 includes a slot 2 for receiving a key body. Slot 2 is adapted to receive a key 18. Rotor 1 may also include rotor pins 3, an embrittlement groove 4a which constitutes anti-burglary protection, as well as a part 4b surmounted by the cylinder bit 9.

Le rotor 1 comprend également au moins un logement 5 accueillant au moins un élément mobile 8, qui est par exemple une bille sphérique.The rotor 1 also comprises at least one housing 5 receiving at least one movable element 8, which is for example a spherical ball.

Le logement 5 est dans cet exemple de réalisation positionné en face de la goupille de rotor 3 la plus proche du panneton de cylindre 9. En d'autres termes, le logement 5 présente dans l'exemple illustré en figure 1b une position sur l'axe longitudinal sensiblement similaire à la position sur l'axe longitudinal de la goupille de rotor 3.The housing 5 is in this embodiment positioned opposite the rotor pin 3 closest to the cylinder bit 9. In other words, the housing 5 present in the example illustrated in figure 1b a position on the longitudinal axis substantially similar to the position on the longitudinal axis of the rotor pin 3.

Chaque logement 5 comporte :

  • Un fond sphérique 6 destiné à recevoir l'élément mobile 8 en l'absence de clé 18,
  • Une partie de guidage 7 qui s'étend dudit fond 6 jusqu'à l'enveloppe externe du rotor 1, l'enveloppe externe du rotor 1 correspondant à une interface 10 entre le rotor 1 et le stator 11.
Each housing 5 comprises:
  • A spherical bottom 6 intended to receive the movable element 8 in the absence of key 18,
  • A guide part 7 which extends from said bottom 6 to the outer casing of rotor 1, the outer casing of rotor 1 corresponding to an interface 10 between rotor 1 and stator 11.

Le fond sphérique 6 et la partie de guidage 7 s'étendent transversalement, c'est-à-dire radialement, par rapport à la direction principale du cylindre du rotor 1, en l'occurrence parallèlement au plan de la fente de réception 2.The spherical bottom 6 and the guide part 7 extend transversely, that is to say radially, with respect to the main direction of the cylinder of the rotor 1, in this case parallel to the plane of the receiving slot 2.

Le fond 6 et la partie de guidage 7 sont obtenus respectivement par perçage et fraisage du rotor 1 selon des dimensions leur permettant d'assurer la réception et le guidage de l'élément mobile 8.The bottom 6 and the guide part 7 are obtained respectively by drilling and milling the rotor 1 according to dimensions allowing them to ensure the reception and the guiding of the mobile element 8.

L'élément mobile 8 est contenu, en l'absence de clé 18 ainsi que pour toutes les positions de la clé 18, à l'intérieur du logement 5 de rotor 1. L'élément mobile 8 est mobile à l'intérieur du logement 5 de rotor 1 entre :

  • une position de retrait, dans laquelle l'élément mobile 8 est contenu à l'intérieur du logement 5 de rotor 1, l'élément mobile 8 étant situé en retrait par rapport à une interface 10 entre le rotor 1 et le stator 11. En d'autres termes, dans la position de retrait, l'élément mobile 8 est situé en une position radialement plus interne que l'interface 10 entre le rotor 1 et le stator 11, l'élément mobile 8 pouvant par exemple être situé au contact du fond sphérique 6 du logement 5 de rotor 1, et
  • une position affleurante, dans laquelle l'élément mobile 8 affleure au niveau de l'interface entre le rotor 1 et le stator 11. L'élément mobile 8 peut alors être situé dans la partie de guidage 7 du logement 5 de rotor 1 et être tangent à l'interface 10 entre le rotor 1 et le stator 11.
The mobile element 8 is contained, in the absence of key 18 as well as for all the positions of the key 18, inside the housing 5 of rotor 1. The mobile element 8 is mobile inside the housing 5 of rotor 1 between:
  • a retracted position, in which the movable element 8 is contained inside the housing 5 of the rotor 1, the movable element 8 being set back with respect to an interface 10 between the rotor 1 and the stator 11. in other words, in the retracted position, the movable element 8 is located in a position radially more internal than the interface 10 between the rotor 1 and the stator 11, the movable element 8 being able for example to be located in contact of the spherical bottom 6 of the housing 5 of the rotor 1, and
  • a flush position, in which the movable element 8 is flush with the interface between the rotor 1 and the stator 11. The movable element 8 can then be located in the guide part 7 of the housing 5 of the rotor 1 and be tangent to interface 10 between rotor 1 and stator 11.

L'élément mobile 8 peut passer d'une position de retrait ou affleurante à l'autre par une translation selon la direction radiale.The movable element 8 can pass from one retracted or flush position to the other by a translation in the radial direction.

Dans le cas où l'élément mobile 8 est une bille sphérique, le diamètre du fond sphérique 6 est sensiblement égal à celui de la bille 8 ; la partie de guidage 7 peut quant à elle être un logement de forme parallélépipèdique et de largeur sensiblement égale au diamètre de la bille 8.In the case where the movable element 8 is a spherical ball, the diameter of the spherical bottom 6 is substantially equal to that of the ball 8; the guide part 7 can itself be a housing of parallelepiped shape and of width substantially equal to the diameter of the ball 8.

Selon un mode de réalisation préféré, les logements 5 sont au nombre de deux, sont situés de chaque côté de la fente 2 de clé et accueillent chacun une bille sphérique 8.According to a preferred embodiment, the housings 5 are two in number, are located on each side of the key slot 2 and each accommodate a spherical ball 8.

En référence plus particulièrement à la figure 2, le stator 11 représenté est celui d'un cylindre à profil européen et comporte :

  • un corps cylindrique 11a dans lequel le rotor 1 est reçu, ledit rotor 1 étant coaxial par rapport audit stator 11 et étant axialement rotatif dans celui-ci. Ainsi, le rotor 1 est mobile en rotation autour de l'axe longitudinal par rapport au stator 11.
  • une partie 11b qui est destinée à la réception des goupilles 13 de stator ; cette partie 11b s'étend le long dudit corps cylindrique 11a, en le prolongeant radialement le long de l'une de ses génératrices, de part et d'autre de celle-ci, avec une épaisseur inférieure au diamètre de celui-ci.
With particular reference to the picture 2 , the stator 11 represented is that of a cylinder with a European profile and comprises:
  • a cylindrical body 11a in which the rotor 1 is received, said rotor 1 being coaxial with said stator 11 and being axially rotatable therein. Thus, the rotor 1 is rotatable around the longitudinal axis relative to the stator 11.
  • a part 11b which is intended to receive the pins 13 of the stator; this part 11b extends along said cylindrical body 11a, extending it radially along one of its generatrices, on either side of the latter, with a thickness less than the diameter of the latter.

Le corps cylindrique 11b présente de préférence le même axe de révolution que le rotor 1, à savoir l'axe longitudinal, et est de préférence en forme de cylindre creux délimitant une cavité sensiblement cylindrique. Le rotor 1 est destiné à être placé à l'intérieur de la cavité délimitée par le corps cylindrique 11a du stator 11.The cylindrical body 11b preferably has the same axis of revolution as the rotor 1, namely the longitudinal axis, and is preferably in the shape of a hollow cylinder defining a substantially cylindrical cavity. The rotor 1 is intended to be placed inside the cavity delimited by the cylindrical body 11a of the stator 11.

Ladite partie 11b est munie d'une encoche 12 pour permettre la rotation du panneton de cylindre 9.Said part 11b is provided with a notch 12 to allow rotation of the cylinder bit 9.

La partie 11b peut comprendre un ou plusieurs logements 15. Un logement 15 de stator 11 peut notamment s'étendre radialement par rapport à l'axe longitudinal et déboucher à l'interface 10 entre le rotor 1 et le stator 11. Dans l'exemple illustré en figure 2, les goupilles de stator 13 sont reçues dans les logements cylindriques 15 qui s'étendent dans ladite partie 11b, radialement par rapport à l'axe du rotor 1. Plus particulièrement, ces logements 15 s'étendent du fond de ladite partie 11b (fond opposé au rotor 1), sur toute la hauteur de celle-ci, pour déboucher de ladite partie 11b et du stator 11 à l'interface 10 entre le rotor 1 et le stator 11. Ainsi, les logements 15 s'étendent du fond de ladite partie 11b, sur toute la hauteur de celle-ci, pour déboucher de ladite partie 11b, traverser le corps cylindrique 11a du stator 11 jusqu'à déboucher à l'interface 10 entre le rotor 1 et le stator 11.The part 11b can comprise one or more housings 15. A housing 15 of the stator 11 can in particular extend radially with respect to the longitudinal axis and emerge at the interface 10 between the rotor 1 and the stator 11. In the example illustrated in figure 2 , the stator pins 13 are received in the cylindrical housings 15 which extend in the said part 11b, radially with respect to the axis of the rotor 1. More particularly, these housings 15 extend from the bottom of the said part 11b (bottom opposite the rotor 1), over the entire height thereof, to emerge from said part 11b and from the stator 11 at the interface 10 between the rotor 1 and the stator 11. Thus, the housings 15 extend from the bottom of said part 11b, over the entire height thereof, to emerge from said part 11b, through the body cylindrical 11a of stator 11 until it emerges at interface 10 between rotor 1 and stator 11.

Ces logements 15 reçoivent également des ressorts 14a qui exercent des efforts de poussée sur les goupilles 13. Ces ressorts 14a prennent appui sur des fixations 14b qui ferment les logements 15 au niveau du fond de la partie 11b.These housings 15 also receive springs 14a which exert thrust forces on the pins 13. These springs 14a rest on fasteners 14b which close the housings 15 at the bottom of the part 11b.

De préférence, un logement 5 de rotor 1 est disposé de façon à être situé en regard du logement 15 de stator 11 sur l'axe longitudinal. Ainsi, lors de la rotation du rotor 1 par rapport au stator 11 et pour un angle donné de rotation du rotor 1 par rapport au stator 11, le logement 5 de rotor 1 parvient en face du logement 15 de stator 11. Notamment, en l'absence de clé, un logement 5 de rotor 1 peut être sensiblement radialement opposé à un logement 15 de stator 11. Ainsi, lors de la rotation du rotor 1 par rapport au stator 11, le logement 5 de rotor 1 parvient en face du logement 15 de stator 11 pour un angle sensiblement égal à 180°. Alors, pour cet angle de rotation du rotor 1, le logement 5 de rotor 1 jouxte le logement 15 de stator 11 au niveau de l'interface 10 entre le rotor 1 et le stator 11.Preferably, a housing 5 of rotor 1 is arranged so as to be located opposite housing 15 of stator 11 on the longitudinal axis. Thus, during the rotation of the rotor 1 with respect to the stator 11 and for a given angle of rotation of the rotor 1 with respect to the stator 11, the housing 5 of rotor 1 arrives opposite the housing 15 of stator 11. In particular, in l absence of a key, a housing 5 of rotor 1 can be substantially radially opposed to a housing 15 of stator 11. Thus, during the rotation of rotor 1 relative to stator 11, housing 5 of rotor 1 arrives opposite the housing 15 of stator 11 for an angle substantially equal to 180 °. Then, for this angle of rotation of rotor 1, housing 5 of rotor 1 adjoins housing 15 of stator 11 at interface 10 between rotor 1 and stator 11.

Le dispositif comprend également une pièce de verrouillage 16. La pièce de verrouillage 16 est reçue à l'intérieur d'un logement 15 de stator 11. La pièce de verrouillage 16 est mobile entre :

  • Une position de déverrouillage, dans laquelle la pièce de verrouillage 16 est contenue dans le logement 15 de stator 11, la rotation du rotor 1 par rapport au stator 11 étant alors libre. Notamment, dans la position de déverrouillage, la pièce de verrouillage 16 peut affleurer au niveau de l'interface 10 entre le rotor 1 et le stator 11, ou être située en retrait par rapport à cette interface 10.
  • Une position de verrouillage, dans laquelle la pièce de verrouillage 16 fait saillie hors du logement 15 de stator 11 à l'intérieur d'un logement 5 de rotor 1, la rotation du rotor 1 par rapport au stator 11 étant alors bloquée. En d'autres termes, la pièce de verrouillage 16 dans la position de verrouillage peut traverser l'interface 10 entre le rotor 1 et le stator 11, une partie de la pièce de verrouillage 16 étant située dans le logement 5 de rotor 1 et une autre partie de la pièce de verrouillage 16 étant située dans le logement 15 de stator 11.
The device also comprises a locking part 16. The locking part 16 is received inside a housing 15 of the stator 11. The locking part 16 is movable between:
  • An unlocked position, in which the locking piece 16 is contained in the housing 15 of the stator 11, the rotation of the rotor 1 relative to the stator 11 then being free. In particular, in the unlocked position, the locking part 16 can be flush with the level of the interface 10 between the rotor 1 and the stator 11, or be set back with respect to this interface 10.
  • A locking position, in which the locking piece 16 projects out of the housing 15 of the stator 11 inside a housing 5 of the rotor 1, the rotation of the rotor 1 relative to the stator 11 then being blocked. In other words, the locking part 16 in the locking position can pass through the interface 10 between the rotor 1 and the stator 11, a part of the locking part 16 being located in the housing 5 of the rotor 1 and another part of the locking part 16 being located in the housing 15 of the stator 11.

De préférence, l'une des goupilles de stator 13 est la pièce de verrouillage 16. Ainsi, aucune complexité n'est ajoutée au système. En particulier, aucune pièce supplémentaire n'est ajoutée et aucun aménagement du stator 11 n'est nécessaire. Notamment, la goupille de stator 13 qui est la plus proche du panneton de cylindre 9 a été référencée par 16 et constitue une pièce de verrouillage destinée à coopérer avec la ou les billes 5 ou autres éléments mobiles 8, ainsi que présenté ultérieurement dans la suite de la description. En variante, la pièce de verrouillage 16 peut être constituée par une autre goupille de stator 13, ou par une pièce distincte, ajoutée au stator 11.Preferably, one of the stator pins 13 is the locking piece 16. Thus, no complexity is added to the system. In particular, no additional part is added and no development of the stator 11 is necessary. In particular, the stator pin 13 which is closest to the cylinder bit 9 has been referenced by 16 and constitutes a locking part intended to cooperate with the ball or balls 5 or other movable elements 8, as presented later in the following. of the description. Alternatively, locking piece 16 may be another stator pin 13, or a separate piece added to stator 11.

En référence à la figure 3, le dispositif comporte également une clé 18 composée d'une tête de clé 19, d'un corps de clé 21 et d'une butée de clé 20.With reference to the picture 3 , the device also comprises a key 18 composed of a key head 19, a key body 21 and a key stop 20.

La clé 18 présente des dimensions adaptées pour déplacer, au fur et à mesure de son insertion dans la fente 2 du rotor 1, l'élément mobile 8 entre :

  • la position de retrait lorsque la clé 18 n'est pas introduite dans la fente 2 du rotor 1, et
  • la position affleurante lorsque la clé 18 est entièrement introduite dans la fente 2 du rotor 1, la clé 18 maintenant alors l'élément mobile 8 en position affleurante de sorte que, lorsque le logement 5 de rotor 1 parvient en regard du logement 15 de stator 11 lors de la rotation du rotor 1, l'élément mobile 8 maintient la pièce de verrouillage 16 dans la position de déverrouillage et l'empêche de passer dans la position de verrouillage.
The key 18 has dimensions adapted to move, as it is inserted into the slot 2 of the rotor 1, the movable element 8 between:
  • the retracted position when key 18 is not inserted into slot 2 of rotor 1, and
  • the flush position when the key 18 is fully inserted into the slot 2 of the rotor 1, the key 18 then maintaining the movable element 8 in the flush position so that, when the housing 5 of the rotor 1 reaches the housing 15 of the stator 11 during the rotation of the rotor 1, the movable element 8 maintains the locking piece 16 in the unlocked position and prevents it from passing into the locked position.

Le corps de clé 21 peut selon un mode de réalisation préféré présenter des indentations 22. Selon l'invention la clé présente au moins une rainure de guidage 23 le long de laquelle le ou les éléments mobiles 8 peuvent se déplacer.The key body 21 may according to a preferred embodiment have indentations 22. According to the invention the key has at least one guide groove 23 along which the movable element(s) 8 can move.

Les indentations 22 sont de préférence adaptées pour repousser les goupilles de rotor 3 lors de l'insertion de la clé 18 dans la fente 2, de sorte à ce qu'une fois la clé 18 entièrement insérée, la jonction entre les goupilles de rotor 3 et les goupilles de stator 13 coïncide avec la jonction 10 entre le rotor 1 et le stator 11.The indentations 22 are preferably adapted to push back the rotor pins 3 when inserting the key 18 into the slot 2, so that once the key 18 is fully inserted, the junction between the rotor pins 3 and the stator pins 13 coincide with the junction 10 between the rotor 1 and the stator 11.

Un élément mobile 8 peut notamment coulisser le long d'une rainure de guidage 23. Le coulissement de l'élément mobile 8 dans la rainure 23 peut s'effectuer par une translation de l'élément mobile 8, par une rotation de l'élément mobile 8, ou par un mouvement ayant à la fois une composante de translation et de rotation.A mobile element 8 can in particular slide along a guide groove 23. The sliding of the mobile element 8 in the groove 23 can take place by a translation of the mobile element 8, by a rotation of the element mobile 8, or by a movement having both a component of translation and rotation.

Selon l'invention, la rainure de guidage 23 s'étend sur au moins une partie du corps de clé 21, dans sa longueur et dans sa hauteur. En d'autres termes, en considérant que la clé 18 est insérée dans la fente 2 de rotor 1, le corps de clé 21 s'étendant principalement selon l'axe longitudinal, la rainure de guidage 23 présente une composante longitudinale et une composante radiale. Les composantes longitudinale et radiale sont adaptées pour déplacer l'élément mobile 8 depuis la position de retrait jusqu'à la position affleurante au fur et à mesure de l'insertion de la clé 18 dans la fente 2 de rotor 1, l'élément mobile 8 étant, lorsque la clé 18 est entièrement insérée, maintenu dans la position affleurante par la rainure de guidage 23.According to the invention, the guide groove 23 extends over at least a part of the key body 21, in its length and in its height. In other words, considering that the key 18 is inserted into the slot 2 of the rotor 1, the key body 21 extending mainly along the longitudinal axis, the guide groove 23 has a longitudinal component and a radial component. . The longitudinal and radial components are adapted to move the movable element 8 from the retracted position to the flush position as the key 18 is inserted into the slot 2 of the rotor 1, the movable element 8 being, when the key 18 is fully inserted, held in the flush position by the guide groove 23.

La rainure 23 s'étend de préférence sur tout ou partie du corps de clé 21, et comporte une première extrémité et une deuxième extrémité. De préférence, la deuxième extrémité de la rainure 23 débouche à l'extérieur du corps de clé 21.The groove 23 preferably extends over all or part of the key body 21, and has a first end and a second end. Preferably, the second end of the groove 23 opens outside the key body 21.

La composante radiale de la rainure 23, ou hauteur, peut être telle que la deuxième extrémité de la rainure 23 soit située en une position radialement plus interne que sa première extrémité. De la sorte, au fur et à mesure de l'insertion de la clé 18 dans la fente 2, l'élément mobile 8 est déplacé depuis la position de retrait radialement plus interne, jusqu'à la position affleurante radialement plus externe.The radial component of the groove 23, or height, can be such that the second end of the groove 23 is located in a radially more internal position than its first end. In this way, as the key 18 is inserted into the slot 2, the movable element 8 is moved from the radially more internal retracted position to the radially more external flush position.

Une pente de la rainure de guidage 23 peut être définie comme un rapport entre la composante radiale de la rainure 23 et la composante longitudinale de la rainure 23. La pente peut varier en fonction d'une position le long de l'axe longitudinal, de manière continue, monotone ou non monotone, ou de manière discontinue. De préférence, la pente de la rainure 23 permet de déplacer radialement l'élément mobile 8 vers l'extérieur du rotor 1 lors de l'insertion de la clé 17.A slope of the guide groove 23 can be defined as a ratio between the radial component of the groove 23 and the component longitudinal of the groove 23. The slope may vary as a function of a position along the longitudinal axis, continuously, monotonically or not monotonously, or discontinuously. Preferably, the slope of the groove 23 makes it possible to move the mobile element 8 radially towards the outside of the rotor 1 during the insertion of the key 17.

La rainure de guidage 23 peut consister en un renfoncement qui peut être fraisé dans le corps de clé 21. Selon un mode de réalisation préféré, le dispositif comprend deux éléments mobiles 8 en la forme de billes sphériques et la clé 18 comporte deux rainures de guidage 23, fraisées de chaque côté du corps de clé 21. Les rainures 23 peuvent s'étendre sur une partie plus ou moins vaste du corps de clé 21, en fonction notamment de la position sur l'axe du cylindre du ou des logements 5 de rotor 1. Les rainures 23 débouchent à l'extrémité du corps de clé 21 afin que les billes 8 présentes ne gênent pas l'introduction de la clé 18.The guide groove 23 can consist of a recess which can be milled in the key body 21. According to a preferred embodiment, the device comprises two movable elements 8 in the form of spherical balls and the key 18 comprises two guide grooves 23, milled on each side of the key body 21. The grooves 23 may extend over a more or less large part of the key body 21, depending in particular on the position on the axis of the cylinder of the housing or housings 5 of rotor 1. The grooves 23 open out at the end of the key body 21 so that the balls 8 present do not interfere with the introduction of the key 18.

Les rainures 23 s'étendent à la fois dans la longueur et dans la hauteur du corps de clé 21, selon des dimensions aptes à positionner les billes 8 le long de la jonction rotor-stator 10. Par exemple, au moment de l'entrée en contact de l'élément mobile 8 avec la rainure 23, la distance entre le centre de la bille 8 et le bord du corps de clé 21 opposé aux indentations 22 peut être de l'ordre de 1 à 5 mm, et plus particulièrement peut environner les 2,8 mm. Lorsque la clé 18 est totalement insérée, la distance entre le centre de la bille 8 et le bord du corps de clé 21 opposé aux indentations 22 peut être de l'ordre de 1 à 3 mm, et plus particulièrement peut environner les 1,9 mm. Bien entendu, d'autres géométries que celles d'une clé plate à indentations seraient envisageables.The grooves 23 extend both in the length and in the height of the key body 21, according to dimensions capable of positioning the balls 8 along the rotor-stator junction 10. For example, at the time of entry in contact of the movable element 8 with the groove 23, the distance between the center of the ball 8 and the edge of the key body 21 opposite the indentations 22 can be of the order of 1 to 5 mm, and more particularly can about 2.8 mm. When the key 18 is fully inserted, the distance between the center of the ball 8 and the edge of the key body 21 opposite the indentations 22 can be of the order of 1 to 3 mm, and more particularly can be around 1.9 mm. Of course, geometries other than those of a flat key with indentations could be envisaged.

Principe de fonctionnementPrinciple of operation

En l'absence de clé 18, l'élément mobile 8 est situé à l'intérieur du logement 5 de rotor 1, en position de retrait. L'élément mobile 8 peut notamment être en contact avec le fond sphérique 6 du logement 5 de rotor 1.In the absence of key 18, the movable element 8 is located inside the housing 5 of the rotor 1, in the retracted position. The movable element 8 may in particular be in contact with the spherical bottom 6 of the housing 5 of the rotor 1.

Ainsi qu'illustré en figures 4 et 5, au fur et à mesure de l'introduction de la clé 18 dans la fente 2 de rotor 1, l'élément mobile 8 s'engage sur la rainure de guidage 23. L'élément mobile 8 coopère ensuite avec la rainure 23 pour être déplacé à l'intérieur du logement 5 de rotor 1. Notamment, l'élément mobile 8 peut être déplacé selon une translation radiale vers l'extérieur du rotor 1, depuis la position de retrait vers la position affleurante.As illustrated in figure 4 and 5 , as the key 18 is introduced into the slot 2 of the rotor 1, the movable element 8 engages on the guide groove 23. The movable element 8 then cooperates with the groove 23 to be moved inside the housing 5 of the rotor 1. In particular, the movable element 8 can be moved according to a radial translation towards the outside of the rotor 1, from the retracted position to the flush position.

Lorsque la clé 18 est entièrement introduite dans la fente 2, l'élément mobile 8 est dans la position affleurante. Par ailleurs, les indentations 22 présentes sur le corps de clé 21 permettent la coïncidence de la jonction entre goupilles de rotor 3 et goupilles de stator 13, avec la jonction 10 entre rotor 1 et stator 11. La rotation du rotor 1 peut alors être amorcée par la manœuvre de la clé 18.When the key 18 is fully inserted into the slot 2, the movable element 8 is in the flush position. Furthermore, the indentations 22 present on the key body 21 allow the junction between the rotor pins 3 and the stator pins 13 to coincide with the junction 10 between the rotor 1 and the stator 11. The rotation of the rotor 1 can then be initiated. by operating key 18.

Ainsi qu'illustré en figure 7b, lorsque, lors de la rotation du rotor 1, le logement 5 de rotor 1 parvient en face du logement 15 de stator 11, l'élément mobile 8 empêche la pièce de verrouillage 16 de pénétrer dans le logement 5 de rotor 1 en position de verrouillage et de bloquer ainsi la rotation du rotor 1. La rotation du rotor 1 est alors libre.As illustrated in figure 7b , when, during the rotation of the rotor 1, the housing 5 of the rotor 1 reaches the housing 15 of the stator 11, the movable element 8 prevents the locking part 16 from entering the housing 5 of the rotor 1 in the position of locking and thus blocking the rotation of the rotor 1. The rotation of the rotor 1 is then free.

Un tel dispositif permet un blocage de la rotation du rotor 1 en cas d'insertion d'une mauvaise clé sans nécessiter d'autres éléments que l'élément mobile 8.Such a device allows a blocking of the rotation of the rotor 1 in the event of insertion of a wrong key without requiring other elements than the movable element 8.

Dans un mode de réalisation, les éléments mobiles 8 sont au nombre de deux et contenus à l'intérieur des logements 5 de rotor 1, qui peuvent être des billes selon un mode de réalisation préféré de l'invention, reposent en l'absence de clé 18 dans les fonds sphériques 6 de leurs logements 5.In one embodiment, the mobile elements 8 are two in number and contained inside the housings 5 of the rotor 1, which can be balls according to a preferred embodiment of the invention, rest in the absence of key 18 in the spherical bottoms 6 of their housings 5.

En référence à la figure 4, lors de l'introduction de la clé 18 correspondant au cylindre décrit dans l'invention, les billes 8 entrent en contact avec les rainures de guidage 23 présentes sur le corps de clé 21.With reference to the figure 4 , during the introduction of the key 18 corresponding to the cylinder described in the invention, the balls 8 come into contact with the guide grooves 23 present on the key body 21.

Au fur et à mesure de l'introduction de la clé 18, les billes 8 coulissent le long de la composante de la rainure de guidage 23 qui est parallèle à l'axe du cylindre. Ainsi une clé sans rainures sera bloquée dans son introduction par les billes 8.As the key 18 is inserted, the balls 8 slide along the component of the guide groove 23 which is parallel to the axis of the cylinder. Thus a key without grooves will be blocked in its introduction by the balls 8.

Les billes 8 sont également déplacées transversalement, c'est-à-dire radialement, dans leurs logements 5 le long de la composante de la rainure de guidage 23 qui est perpendiculaire à l'axe du cylindre de rotor 1.The balls 8 are also moved transversely, i.e. radially, in their seats 5 along the component of the guide groove 23 which is perpendicular to the axis of the rotor cylinder 1.

Une fois la clé 18 totalement insérée, situation illustrée dans les figures 5 et 6, les jonctions entre les goupilles de rotor 3 et les goupilles de stator 13, y compris la jonction entre la goupille de stator 13 la plus proche du panneton de cylindre 9, qui consiste dans l'exemple en la pièce de verrouillage 16, et la goupille de rotor 3 correspondante, coïncident avec la jonction 10 entre le rotor 1 et le stator 11. Par ailleurs, les billes 8 sont alors situées dans la partie de guidage 7 de leur logement, et sont tangentes à la jonction 10 entre le rotor 1 et le stator 11.Once the key 18 is fully inserted, situation illustrated in the figure 5 and 6 , the junctions between the rotor pins 3 and the stator pins 13, including the junction between the stator pin 13 closest to the cylinder bit 9, which consists in the example of the locking part 16, and the corresponding rotor pin 3, coincide with the junction 10 between the rotor 1 and the stator 11. Furthermore, the balls 8 are then located in the guide part 7 of their housing, and are tangent to the junction 10 between the rotor 1 and the stator 11.

La manœuvre de la clé 18 peut alors actionner la rotation du rotor 1 jusqu'à ce que la pièce de verrouillage 16 située dans le stator 11 parvienne, selon le sens de rotation et comme illustré en figure 6, en face de l'un ou l'autre des logements 5 de rotor contenant les éléments mobiles 8.The operation of the key 18 can then actuate the rotation of the rotor 1 until the locking part 16 located in the stator 11 reaches, according to the direction of rotation and as illustrated in figure 6 , opposite one or other of the rotor housings 5 containing the moving elements 8.

En l'absence de clé ou dans le cas de l'insertion d'une mauvaise clé, comme l'illustre la figure 7a, à supposer qu'un individu soit parvenu à aligner la jonction entre les goupilles de rotor 3 et de stator 13 avec la jonction 10 entre le rotor 1 et le stator 11 et à amorcer la rotation du cylindre, la bille 8 est alors libre dans son logement 5, sa position n'étant pas bloquée par la rainure de guidage 23. Lorsque, lors de la rotation du rotor 1, le logement 5 de rotor 1 parvient en face du logement 15 de stator 11, la pièce de verrouillage 16 repoussée par son ressort 14a descendra alors dans le logement 5 de la bille 8, la repoussant dans le bas du logement 5, et dépassera donc dans le rotor 1. La pièce de verrouillage 16 sera alors en position de verrouillage. La rotation du cylindre s'en retrouvera bloquée.If there is no key or the wrong key is inserted, as shown in the figure 7a , assuming that an individual has succeeded in aligning the junction between the rotor 3 and stator 13 pins with the junction 10 between the rotor 1 and the stator 11 and in initiating the rotation of the cylinder, the ball 8 is then free in its housing 5, its position not being blocked by the guide groove 23. When, during the rotation of the rotor 1, the housing 5 of the rotor 1 arrives opposite the housing 15 of the stator 11, the locking part 16 pushed back by its spring 14a will then descend into the housing 5 of the ball 8, pushing it into the bottom of the housing 5, and will therefore protrude into the rotor 1. The locking part 16 will then be in the locking position. The rotation of the cylinder will be blocked.

De même, une clé dont la rainure 23 ne correspond pas parfaitement au profil souhaité soit soulèvera trop la bille 8, qui bloquera alors la rotation, soit ne la soulèvera pas assez, la rotation étant alors bloquée par la pièce de verrouillage 16 qui pénètrera dans le logement 5 de la bille 8.Similarly, a key whose groove 23 does not correspond perfectly to the desired profile either will raise the ball 8 too much, which will then block the rotation, or will not raise it enough, the rotation then being blocked by the locking part 16 which will penetrate into housing 5 of ball 8.

A l'inverse, comme l'illustre la figure 7b, si la clé correspondante 18 est introduite, la bille 8 est alors positionnée une fois la clé 18 totalement insérée à l'interface 10 entre le rotor 1 et le stator 11, empêchant la pièce de verrouillage 16 de descendre dans son logement 5 lors de la rotation du rotor 1, quel qu'en soit le sens.Conversely, as illustrated by figure 7b , if the corresponding key 18 is inserted, the ball 8 is then positioned once the key 18 is fully inserted at the interface 10 between the rotor 1 and the stator 11, preventing the locking part 16 from descending into its housing 5 during the rotation of the rotor 1, whatever the direction.

Claims (5)

  1. Device for safety lock comprising:
    - a rotor (1) having a slot (2) for receiving a key body (21) and at least one housing (5) capable of receiving at least one movable element (8),
    - a key (18) having at least one guide groove (23) along which the movable element (8) can move, and
    - a stator (11) comprising at least one locking part (16) cooperating with said movable element (8) in certain positions of the key (18), such that the guide groove (23) extends over at least a part of the key body (21), in its length and in its height, such that in the absence of the key (18), the movable element (8) is contained within the housing (5) present in the rotor (1) such that this movable element (8) engages on the guide groove (23) present on the key (18) when inserting the latter into the cylinder and such that it then cooperates with the groove (23) to be moved within the housing (5) to a position where the junction between the movable element (8) and the locking part (16) corresponds to the interface (10) between the rotor (1) and the stator (11), the movable element (8) then preventing the locking part (16) from descending into its housing (5) during rotation of the rotor (1).
  2. Device according to claim 1, wherein the rotor (1) comprises two housings (5) located on each side of the slot (2) for receiving the key body (21), these two housings (5) receiving two movable elements (8) cooperating with two guide grooves (23) located on each side of the key body (21).
  3. Device according to any one of claims 1 or 2, wherein a movable element (8) is a spherical ball.
  4. Device according to any one of claims 1 to 3, wherein the locking part (16) is a cylindrical stator pin (13) mounted on a spring (14a).
  5. Device according to any one of claims 1 to 4, wherein the locking part (16) is located in the plane orthogonal to the cylinder axis and passing through the centre of the movable element or elements (8).
EP18212442.0A 2017-12-13 2018-12-13 Key and cylinder for security lock Active EP3498944B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1762083A FR3074827B1 (en) 2017-12-13 2017-12-13 KEY AND CYLINDER FOR SECURITY LOCK

Publications (2)

Publication Number Publication Date
EP3498944A1 EP3498944A1 (en) 2019-06-19
EP3498944B1 true EP3498944B1 (en) 2022-07-13

Family

ID=61913283

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18212442.0A Active EP3498944B1 (en) 2017-12-13 2018-12-13 Key and cylinder for security lock

Country Status (4)

Country Link
EP (1) EP3498944B1 (en)
ES (1) ES2927667T3 (en)
FR (1) FR3074827B1 (en)
PL (1) PL3498944T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4019717B1 (en) * 2020-12-22 2023-05-10 KALE Kilit ve Kalip Sanayi A.S. Lock cylinder with an improved security

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3286494A (en) * 1964-03-23 1966-11-22 Frank J Wille Pick-proof pin-tumbler lock mechanism
US4213316A (en) * 1978-08-10 1980-07-22 Werner Tietz Cylinder-lock mechanism and key means therefore
DE19654136C2 (en) * 1996-12-23 1999-11-18 Schulte C E Gmbh Locking cylinder
DE102004021580B3 (en) * 2004-05-03 2005-11-10 Wilka Schließtechnik GmbH From key and lock cylinder existing closing device
DE102009037682B4 (en) * 2009-08-14 2012-03-01 Assa Abloy Sicherheitstechnik Gmbh lock cylinder
DE102009050129A1 (en) * 2009-10-21 2011-04-28 Abus Pfaffenhain Gmbh locking system
DE102010012261B4 (en) * 2010-03-22 2015-08-20 Abus Pfaffenhain Gmbh locking system

Also Published As

Publication number Publication date
FR3074827B1 (en) 2021-02-12
ES2927667T3 (en) 2022-11-10
PL3498944T3 (en) 2022-12-12
FR3074827A1 (en) 2019-06-14
EP3498944A1 (en) 2019-06-19

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