EP3584393B1 - Rotor for disc lock and disc lock - Google Patents

Description

The present invention relates to a rotor (1) for a lock comprising (a) a stator (31) with an open chamber (30) with a longitudinal central axis (A), intended to receive said rotor (1), said rotor (1). ) having an open chamber (1A) with a central axis (B) in which is located an assembly (100) comprising a series of straws or locking discs (3) intended to undergo at least one relative rotational movement with respect to the 'central axis (B) of the open chamber (1A) of the rotor (1) during the introduction of a key (10) in an open central passage (15) of the series of straws or discs (3), said sequins or locking discs (3) each having at least one finger or one protuberance (3A) directed towards the open central passage,
for which said key (10) is a key for unlocking the rotor (1) which comprises a substantially cylindrical rod or part of a rod (10A) with a central axis (10X) and having on its substantially cylindrical outer face (10B) at least two sinuous guide grooves (10C, 10D) adapted to receive at least one finger or protuberance of sequins or locking discs (3), and a free end (10E) with a guide means for guiding each finger or protuberance (3A) in one of said at least two sinuous guide grooves (10C, 10D), said substantially cylindrical rod (10A) further having a planar portion (10M) adapted to be inserted at least partially into the open central passage (15) after the introduction of the free end into the open central passage (15) of the series of straws or locking discs (3) by translation in the direction of the central axis (B) of the open chamber (1A),
wherein said rotor (1) comprises at least two longitudinal slots (1D) each adapted to receive a locking pin (4) movable between a first position in which the considered pin (4) extends only partially in a longitudinal slot ( 1D) and partially outside said rotor (1) outside of the considered longitudinal slot (1D), and a second position in which has a first part extending into the considered pin (4) extends only partially in a longitudinal slit (1D) and partially to the chamber (1A) of the rotor the exterior of said rotor (1) outside the considered longitudinal slot (1D), the movement of each pin (4) from its first position to its second position being against the action of an elastic means,
each longitudinal slot (1D) extending between a first window (1D1) facing the open chamber (1A) of the rotor (1), and a second window (1D2) extending along the outer cylindrical face of the rotor ( 1).

Rotors are known substantially of this type, for example from the document US4,062,211 which teaches a lock with a single cylindrical latch pin adapted to move between a latch position where the latch rod partially extends into a groove of the stator and the slot of the rotor (so as to prevent any movement of the rotor by relative to the stator), and an unlocking position for which the rod extends into the slot of the rotor and a groove formed by the alignment of notches of the discs. The unlocking discs with notches are separated by spacer discs each having a lug extending in a longitudinal channel of the rotor. The spacer discs are thus integral with the rotor. Each spacer disc has a notch located opposite the slot in the rotor cooperating with the lock rod. By turning the key, the release discs are moved so that the notches of the release discs are aligned with the slot in the rotor. By further rotation of the key, a torque is exerted on the lock rod to move it out of the groove of the stator to its unlocked position, thus allowing rotation of the rotor.

By document EP1279788 , there is known a rotor having an open chamber with a central axis in which is located an assembly comprising a series of locking discs intended to undergo at least one relative rotational movement with respect to the central axis of the open chamber of the rotor. The locking discs each have at least one finger or protuberance directed towards the open central passage. The locking discs each have a surface circular locking with one or more peripheral notches. The rotor includes a longitudinal slot which extends between a first window facing the open chamber of the rotor and a second window extending along the outer cylindrical face of the rotor. The rotor includes at least one rotational torque transmission disc, said transmission disc having a partially circular central opening with a flat edge. The transmission disc has a means cooperating with an element of the rotor so that a rotation of the transmission disc causes a rotation of the rotor on a first angular sector of rotation and in that the locking discs are arranged in the chamber open rotor so as not to exert torque on the rotor during the first angular sector of rotation of the transmission disc.

With such a type of lock, the use of the wrong key by the owner of the lock attempting to force the opening anyway will generate one or more deformations of a disc or discs, which will then completely block the lock. Likewise, an experienced burglar will be able to force the rotation of the rotor relative to the stator while being able to vary the position of the locking discs. Some will even be able to break the lock by exerting a force or a significant torque.

The document US2014 / 0373581 describes a key controlling the rotation of notched discs during the engagement of the key by the displacement of a finger of each disc in a groove of the shank of the key. Once the key is engaged, the notches of the notched discs and the notches of the spacer discs (fixed relative to the rotor) are aligned opposite the bars for securing all the discs to one another. The spacer discs have tabs located between the distinct parts of the rotor, and constitute a part of the rotor. Once all the notched discs and the spacer discs secured together, each notched disc and each spacer disc cooperate with the rotation of the rotor relative to the stator to move the single lock bar, during a rotation of the rotor by the rotation of the key. Notched discs do not have a sufficient circular edge sector to prevent relative movement of the toothed discs in the chamber defined by the rotor. Here also the spacer discs can serve as a support for an inappropriate key of the user, with a risk of deformation at least of the spacer discs, this then making it impossible to open the lock by the appropriate key. The tie bars are not lock bars, since they do not prevent the rotation of the rotor in case of forced rotation of the rotor relative to the stator, some experienced burglars will be able to force a rotation of the rotor with the discs spacers, to generate a distortion, or even a breakage of the rotor which comprises two distinct parts separated from one another by open slots receiving the ears of the spacer discs. These slots therefore remain partially open, which makes them suitable for receiving dust and other debris. The presence of such debris or possessions is a cause of unwanted blocking of the lock, thus preventing the opening of the lock impossible with the adequate key.

The document FR2752863 describes a lock comprising discs each with a peripheral notch. When the shank of a key is inserted, the discs undergo rotational movements to align the notches in front of a slot in the rotor, a position in which the lock bar is then moved out of the groove of the stator, allowing then a rotational movement of the rotor. In the embodiment shown, the rotor comprises a sleeve serving as an intermediate piece with the peripheral edge of the discs each having a notch. Experienced burglars have no problem finding the correct position of the discs to unlock the lock and therefore open the lock.

The document CA1227351 (see in particular the embodiment of Figures 22 and following) describes a lock comprising a stator and a rotor in the chamber in which a series of discs are housed. The rotor has a slot for the passage of a lock bar, while the locking discs each have a peripheral notch. The notches of the discs are intended to be aligned when inserting the key. Then a rotation of the discs will generate a rotation of the rotor, which will cause the lock bar to move in the rotor and the notch of the discs. In this version, a skilled burglar can find the position of the discs to align them in front of the latch bar, then allowing this bar to move in the notches of the discs and thus allowing rotation of the rotor.

The document EP 1 350 909 A1 discloses a rotor with an open chamber with a central axis in which is located an assembly comprising a series of locking discs with a protrusion directed towards the open central passage. The rotor includes a longitudinal slot and torque transmission discs.

The rotor according to the invention is a rotor as described in claim 1. This rotor is a rotor of simple design, making it possible to avoid fouling problems by using a rotor consisting of a single piece and having two longitudinal slots. , but also making it possible to avoid that the only placement of the locking discs in position with the notches aligned allows a displacement of the latch pins towards their unlocked position. To ensure the movement of the lock pins in their unlocked position, it is necessary to rotate a transmission disc capable of transmitting sufficient torque to the rotor to ensure the lock pins to move in the grooves formed by the notches.

By keeping the locking pins in the locked position, as long as sufficient torque is not exerted on the rotor, it is possible to make it more difficult for the burglar to find the correct position of the locking discs. Likewise, should a burglar attempt to force the rotor to rotate with an inappropriate tool, they will break the key, tool or transmission disc, leaving the lock in the locked position.

A key suitable for controlling the opening of a rotor according to the invention with respect to a stator comprises a rod that is substantially cylindrical or having the shape of a part of a cylinder or of a rod. We know such keys.

The document DE4314208 describes a substantially cylindrical key shank, part of which has been removed to form a series of teeth. The rod also has a longitudinal groove (parallel to the longitudinal axis of the rod).

The document EP1350909 describes a key comprising a shank having on its cylindrical outer face two sinusoidal grooves. The free end part of the rod has a reduced section compared to the section of the rest of the rod.

The document DE1919979 describes a key having a shank with an outer surface following a longitudinal section of a cylinder, the section having a sinusoidal groove terminating in a mouth.

The document FR3032218 describes a key of a type similar to that described in DE19199979 .

The document US 2014/0373581 describes a substantially cylindrical key having a central cylindrical hollow and a longitudinal slot extending through the wall, said slot and said hollow being adapted to receive the inner protrusion of each spacer disc.

Such keys allow control of the position of discs allowing unlocking of a cylinder. If the use of enlarged mouthpieces facilitates the movement of the control fingers of the discs, these mouthpieces also facilitate the supply of debris or other matter in the grooves, thus making it difficult to use the key, or even damaging one or more fingers. one or more rotating discs.

In addition, it turned out that the substantially cylindrical passage formed by the discs controlled by a known key which can be the object of an attack by drill or allows the passage of a tool to force a rotation of the rotor relative to the stator.

The object of the invention is to make more complicated an attack or an attempt to open a lock by using a rotor according to the invention, in particular in combination with a key having a particular shape.

The object of the invention is a rotor (1) for a lock comprising (a) a stator (31) with an open chamber (30) with a longitudinal central axis (A), intended to receive said rotor (1), said rotor ( 1) having an open chamber (1A) with a central axis (B) in which is located an assembly (100) comprising a series of locking discs (3) intended to undergo at least one relative rotational movement with respect to the central axis (B) of the open chamber (1A) of the rotor (1) when inserting a key (10) in an open central passage (15) of the series of discs (3), said discs of locking (3) each having at least one finger or one protrusion (3A) directed towards the open central passage, the locking discs (3) each having a circular locking surface (3C) with one or more peripheral notches (3B),
wherein said rotor (1) comprises at least two longitudinal slots (1D) each adapted to receive a latch pin (4) movable between a first position in which the considered latch pin (4) extends only partially in a slot longitudinal (1D) and partially outside said rotor (1) out of the considered longitudinal slot (1D), and a second position in which the considered latch pin (4) extends only partially in a longitudinal slot (1D ) and partially in the chamber (1A) of the rotor (1), the movement of each latch pin (4) from its first position to its second position being effected by a rotational movement of the rotor when the latter is placed in a stator 31,
for which the locking discs (3) are each rotatably mounted in the open chamber (1A) of the rotor (1) so that the translational movement of the unlocking key of the rotor (1) in the direction of central axis (B) of the open chamber (1A) of the rotor (1) operates a rotation of the locking discs between them and with respect to the rotor (1), so that, after a rotation of the discs between them, peripheral notches 3B of the locking (3) are aligned with each other to form at least one or two recesses suitable for receiving the locking pins (4),
wherein each longitudinal slot (1D) extends between a first window (1D1) facing the open chamber (1A) of the rotor (1), and a second window (1D2) extending along the outer cylindrical face of the rotor (1).

In the rotor according to the invention, the lock pins (4) each have the shape of a cylindrical rod with a diameter (D) of 2 to 5 mm made of steel.

The rotor comprises at least one transmission disc (8D) of the rotational torque to the rotor during a rotation of the unlocking key (10), after introduction of the substantially cylindrical rod into the open central passage (15) of the series straws or locking discs (3) by translational movement of the rod of the unlocking key (10) in the direction of the central axis (B) of the open chamber of the rotor (1), said transmission disc ( 8D) having a central opening (8E) partially circular with a flat edge (8E1) adapted to at least partially match the flat part (10M) of the rod (10A) of the unlocking key (10) after the introduction of the 'free end of the rod (10A) in the open central passage (15) of the series of locking discs (3) by translation in the direction of the central axis (B) of the open chamber (1A), said disc transmission (8D) having a means (8D1) cooperating directly with an element (1 M) of the rotor (1) so that a rotation of the transmission disc (8D) causes the rotor (1) to rotate over a first angular sector of rotation,
while the locking discs (3) are arranged in the open chamber (1A) of the rotor so as not to exert torque on the rotor at least during said first angular sector of rotation of the transmission disc (8D).

In the locked position, the lock pins (4) are each slightly blocked in the outer window 1D2 of a slot 1D of the rotor 1, the torque transmitted by the rotation of the transmission disc must then be sufficient to release the pins lock from the exterior windows of the slots.

The element 1M is for example a finger or a longitudinal bead 1M (see figure 11B ) extending along the inner face of the rotor, this bead then also serving as a means for limiting the failure of the locking discs 3. The means 8D1 of the transmission disc 8D is then for example a peripheral recess.

The rotor 1 has for example two diametrically opposed longitudinal beads 1M, so as to ensure better transmission of the torque from the transmission disc to the rotor 1, and so as to limit the rotation of the locking discs 3 in both directions.

Locking disc or discs 3 have a flat or curved edge 3E between its peripheral edge 3C (opposing the movement of a pin towards its unlocking position) and the bottom of its notch (3B), so that 'after the latch pins (4) extend into the recess (s) formed by the alignment of notches (3B) of the locking discs (3), the rotation of one or more locking discs 3 generated by a movement of withdrawal of the locking key (translational movement) at least two plates of one or more locking discs act respectively on one of the lock pins to move it to its first position.

Such a rotor according to the invention thus dissociates the movement of the lock disks which do not allow unlocking of the lock pins, from the movement of the lock pins 4, during an unlocking operation. The movement of the pins 4 in their second position is effected by a rotation of the transmission disc 8D of torque of the rotor 1 on the pins 4. Such a rotor provides double protection, because in the absence of an adequate key to ensure a minimum torque via the 8D transmission disc, the lock pins 4 will remain in their locked position. As long as the locking discs are not in a position suitable for receiving the lock pins 4, the rotation of the Transmission disc and rotor 1 will not be allowed to ensure the opening of the lock.

• chaque fente longitudinale (1D) adaptée chacune pour recevoir une goupille de verrou (4) en forme de tige cylindrique présente ou est associée à au moins un moyen formant une butée pour limiter le mouvement de la goupille de verrou (4) hors de la fente à travers la deuxième fenêtre (1D2). Ceci facilite le placement d'un rotor dans une chambre d'un stator.
• la deuxième fenêtre de chaque fente longitudinale présente au moins une ou des parties ouvertes avec un écartement inférieur au diamètre de la tige cylindrique de la goupille de verrou (4).
• la deuxième fenêtre (1D2) s'étend entre deux bords longitudinaux écartés l'un de l'autre d'un écartement compris entre 0,5 et 0,95 fois (en particulier entre 0,5 et 0,8 fois) le diamètre de la tige de la goupille (4), tandis que la première fenêtre 1D1 s'étend entre deux bords longitudinaux écartés l'un de l'autre d'un écartement compris entre entre 1,1 et 3 fois (en particulier de 1,2 à 1,5 fois) le diamètre de la tige de la goupille (4), les bords longitudinaux de la deuxième fenêtre (1D2) d'une fente longitudinale étant situés dans un secteur angulaire compris dans le prolongement radial du secteur angulaire des bords longidtudinaux de la première fenêtre (1D1) de la fente longitudinale considérée. La fenêtre 1D2 est avantageusement sensiblement rectangulaire pour assurer qu'en position de verrouillage, les goupilles de verrou 4 soient bien atachées aux bords longitudinaux d'une fenêtre 1D2. Les plats reliant la fenêtre 1D2 à la fenêtre 1D1 forment une sorte de coin pour bloquer la goupille en position de verrouillage.
• les bords longitudinaux de la première fenêtre (1D1) d'une fente longitudinale (1D) sont reliées chacune à un bord longitudinal de la deuxième fenêtre (1D2) par une face de guidage au moins partiellement plane sur laquelle la face cylindrique d'une goupille (4) peut se mouvoir ou rouler.

According to the rotor according to the invention, the rotor according to the invention has the following characteristics:

• each longitudinal slot (1D) each adapted to receive a lock pin (4) in the form of a cylindrical rod present or is associated with at least one means forming a stop for limiting the movement of the lock pin (4) out of the slot through the second window (1D2). This facilitates the placement of a rotor in a chamber of a stator.
• the second window of each longitudinal slot has at least one or more open parts with a spacing less than the diameter of the cylindrical rod of the lock pin (4).
• the second window (1D2) extends between two longitudinal edges spaced apart from each other by a spacing of between 0.5 and 0.95 times (in particular between 0.5 and 0.8 times) the diameter of the shank of the pin (4), while the first window 1D1 extends between two longitudinal edges spaced apart from each other by a spacing of between 1.1 and 3 times (in particular by 1, 2 to 1.5 times) the diameter of the shank of the pin (4), the longitudinal edges of the second window (1D2) of a longitudinal slot being located in an angular sector included in the radial extension of the angular sector of the edges longidtudinals of the first window (1D1) of the considered longitudinal slit. The window 1D2 is advantageously substantially rectangular to ensure that in the locked position, the latch pins 4 are properly attached to the longitudinal edges of a window 1D2. The flats connecting the 1D2 window to the 1D1 window form a kind of wedge to lock the pin in the locked position.
• the longitudinal edges of the first window (1D1) of a longitudinal slot (1D) are each connected to a longitudinal edge of the second window (1D2) by an at least partially planar guide face on which the cylindrical face of a pin (4) can move or roll.

Features of the rotor according to the invention are given in claims 2 to 9.

The subject of the invention is also a lock comprising a stator (31) defining an open chamber (30) receiving a rotor (1) according to the invention, said open chamber (30) at least partially having a cylindrical lower surface (30A). associated with at least two longitudinal grooves (30B) adapted to each receive a part of pin (4) in the locking position of the rotor (1) relative to the stator (31), while the cylindrical lower surface (30A) is adapted to cooperate with the lock pins (4) during a rotation of the rotor (1) controlled by the unlocking key (10), said rotation of the rotor (1) causing the movement of the lock pins (4) out of the longitudinal grooves (30B) of the stator (30) to bring the pins (4) into their second position against the elastic means.

Advantageously, the stator (31) has at its front part a support with a central cylindrical front opening communicating with the open chamber (30), said central opening of the front part and said open chamber (30) having the same central axis (A), the diameter of the front cylindrical opening being greater than the diameter of the open chamber (30) increased by twice the height of the part of a latch pin (4) protruding from a longitudinal slot (1D) rotor (1).

Preferably, it comprises a retaining means (9) to oppose the withdrawal of the rotor (1) from the chamber (30) of the stator (31).

The subject of the invention is also a secure device, in particular a safe, padlock, cabinet, comprising at least one lock according to the invention.

The lock according to the invention advantageously cooperates with a particular unlocking key. This key is then preferably a key (10) for activate at least one unlocking of a rotor (1) of a lock capable of undergoing at least one rotational movement relative to a longitudinal axis (A) of a chamber (30) of a stator (31) in which is placed the rotor (1), said rotor (1) having a chamber (1A) with a central axis (B) in which are located a series of flakes or discs (3) intended to undergo at least one rotational movement relative to to the central axis (B) of the chamber (1A) of the rotor (1) during the introduction of the key (10) in an open central passage (15) of the series of straws or discs (3), said key (10) comprising a cylindrical shank or part of a cylindrical shank (10A) having on its cylindrical or partially cylindrical outer face (10B) at least two sinuous guide grooves (10C, 10D) adapted to receive at least one finger or protuberance (3A) flakes or discs (3) intended to undergo at least one rotational movement relative to the axis (B) of the chamber (1A) of the rotor (1) when the key is introduced into the central passage (15) of the rotor, and a free end (10E) with a means for guiding the fingers or protuberances (3A) in one or the other of said at least two sinuous grooves (10C, 10D).

This key may have the characteristic that the free end (10E) has a recessed part (10F) having a longitudinal hollow (10G) with a central axis (C) at least parallel to the axis of rotation (B) of the straws or discs (3) in the chamber (1A) of the rotor (1), said hollow being adapted to receive a stop (5) in the form of a rod or longitudinal bar attached or associated with the stator (31) or the rotor (1), optionally via a disc (for example a transmission disc) or a sliding means, as well as to allow a rotation of the shank (10A) of the key (10) when said stop (5) is engaged in said hollow (10G) during the introduction of the key rod (10A) into the open central passage (15) of the series of straws or discs (3).

The key advantageously has a free end having a flat adapted to match an edge of the central opening of the transmission disc. In embodiments a flat portion of the rod is distenated to cooperate with a flat edge of a central opening of a transmission disc located between locking discs.

The key advantageously allows, once engaged in the rotor, a rotation of the rotor both in the clockwise direction and in the anti-clockwise direction.

The subject of the invention is also a secure device, in particular a safe, padlock, cabinet, comprising at least one lock according to the invention.

• La figure 1 est une vue éclatée d'une première forme de réalisation d'une serrure suivant l'invention;
• La figure 2 est une vue de haut du rotor sans la clef et sans les disques montrant une fente longitudinale (1D);
• la figure 3 est une vue de côté du rotor de la figure 2;
• La figure 4 est une vue en coupe du rotor de la figure 3 le long de la ligne C-C montrant les fentes longitudinales (1D) diamétralement opposées et leur section transversale sensiblement trapézoïdale;
• La figure 5 est une vue avant du rotor de la figure 2;
• La figure 6 est une vue en perspective du rotor de la figure 2;
• Les figures 7A,7B,7C et 7D sont des vues de côté de la tige d'une clef de déverrouillage pour la serrure de la forme de réalisation de la figure 1;
• Les figure 8A et 8B sont des vues en perspective de la tige de la clef de la forme de réalisation de la figure 1, tandis que la figure 8C est une vue en coupe de l'extrémité libre (10E) de la tige de la clef ;
• Les figures 9A, 9B, 9C et 9D sont des vues respectivement avant, de côté, en perspective et en coupe (le long de la ligne D-D dans la figure 9B) du stator de la serrure de la figure 1;
• Les figures 10A et 10B sont des vues en coupe du rotor avec un disque en position verrouillée (Fig 10A) et du rotor avec un disque après insertion de la tige de la clef (fig 10B) avec la clef insérée, montrant la position de deux disques de verrou avec les goupilles (4) en position de blocage,
• La figure 11A montre en coupe le rotor et le disque de transmission (8D) avant sa rotation par la clef de deverrouillage, tandis que la figure 11B est une vue du rotor et de son disque de transmission après rotation. La figure 11C montre en coupe le rotor et un disque de verrouillage après rotation de disque de transmission,
• Les figures 12A, 12B, 12C et 12D sont des vues en coupe de la serrure en position verrouillée, en position avec la clef partiellement introduite, en position avec la clef complètement introduite (avant la rotation du rotor 1 par le disque de transmission) et en position déverrouillée.

Features and details of the invention will emerge from the following detailed description in which reference is made to the accompanying drawings.
In these drawings,

• The figure 1 is an exploded view of a first embodiment of a lock according to the invention;
• The figure 2 is a top view of the rotor without the key and without the discs showing a longitudinal slot (1D);
• the figure 3 is a side view of the rotor of the figure 2 ;
• The figure 4 is a sectional view of the rotor of the figure 3 along line CC showing the diametrically opposed longitudinal slits (1D) and their substantially trapezoidal cross section;
• The figure 5 is a front view of the rotor of the figure 2 ;
• The figure 6 is a perspective view of the rotor of the figure 2 ;
• The figures 7A, 7B, 7C and 7D are side views of the stem of an unlocking key for the lock of the embodiment of the figure 1 ;
• The figure 8A and 8B are perspective views of the shank of the key of the embodiment of the figure 1 , while the figure 8C is a sectional view of the free end (10E) of the shank of the key;
• The figures 9A, 9B, 9C and 9D are front, side, perspective and sectional views respectively (along line DD in the figure 9B ) of the lock stator of the figure 1 ;
• The figures 10A and 10B are sectional views of the rotor with a disc in the locked position ( Fig 10A ) and the rotor with a disc after inserting the key shank ( fig 10B ) with the key inserted, showing the position of two lock disks with the pins (4) in the locked position,
• The figure 11A shows in section the rotor and the transmission disc (8D) before its rotation by the unlocking key, while the figure 11B is a view of the rotor and its transmission disc after rotation. The figure 11C section shows the rotor and a locking disc after rotation of the transmission disc,
• The figures 12A , 12B , 12C and 12D are sectional views of the lock in the locked position, in position with the key partially inserted, in position with the key fully inserted (before the rotation of the rotor 1 by the transmission disc) and in the unlocked position.

Description of preferred embodiments

To the figure 1 is shown a lock according to the invention.
The key (10) shown in figures 7A to 7D is an example of a key capable of activating at least one unlocking of a rotor or cylinder (1) of a lock capable of undergoing at least one rotational movement relative to a longitudinal axis (A) of a chamber (30) of a stator (31) in which the rotor (1) is placed, said rotor (1) having a chamber (1A) with a central axis (B) in which are located a series of flakes or discs (3) intended for undergo at least one rotational movement relative to the central axis (B) of the chamber (1A) of the rotor (1) during the introduction of the rod 10A of the key (10) into an open central passage (15) ) of the series of spangles or discs (3).
Said key (10) comprises a cylindrical shank 10A or a part of a cylindrical shank (10A) having on its cylindrical or partially cylindrical outer face (10B) at least two sinuous guide grooves (10C, 10D) adapted to receive at least one finger or protuberance (3A) of the flakes or lock discs (3) intended to undergo at least one rotational movement relative to the axis (B) of the chamber (1A) of the rotor (1) during the introduction of the key in the central passage (15) of the rotor, and a free end (10E) with a for guiding the fingers or protuberances (3A) in one or the other of said at least two sinuous grooves (10C, 10D).
The key 10 has a 10T head (shown in broken lines on the figure 7B ) attached to rod 10A. The head 10T has a passage for receiving an end 10E2 (opposite the end 10E) of the rod 10A. To ensure adequate fixing of the head 10T on the rod 10A, the rod 10A has a flat part 10M extending the along a substantially cylindrical part 10B. This flat part 10M is adapted to cooperate with a flat part 10T1 of the passage of the head 10T. To prevent the head 10T from being withdrawn from the rod 10A, the passage of the head includes one or more stops intended to extend into a groove 10M1 of the rod 10A (for example extending over the cylindrical part 10B substantially diametrically opposite to the flat part 10M).

As shown in figure 8C , the free end (10E) of the key 10 has a recessed part (10F) having a longitudinal hollow (10G) with a central axis (C) at least parallel to the axis of rotation (B) of the flakes or discs of latch (3) in the chamber (1A) of the rotor (1), said hollow (10G) being adapted to optionally receive a stop (5) in the form of a rod or longitudinal bar attached to the stator (31) or to the rotor (1) (in the present case at the bottom of the rotor (1), this stop is for example formed by the rod of a screw screwed on the base of the rotor 1), as well as to allow a rotation of the rod (10A) of the key (10) when said stopper (5) is engaged in said hollow (10G) during the introduction of the key rod (10A) into the open central passage (15) of the series of straws or discs (3).
The recessed part (10F) extends from the free end, with a first substantially frustoconical part 10G1 opening into the substantially cylindrical part 10G. The front part 10G1 then serves as a guide means for the stop (5), which then makes it possible to limit the movement of a key in the passage formed by the openings of the lock discs 3. This free end 10E of the rod (10A ) is associated with two flared outer grooves (101,10J) separated from one another forming a guide means for the fingers of the lock discs 3 during the introduction of the rod 10 of the key, said fingers being then guided in one or the other of the sinuous grooves (10C, 10D) of the shank (10A) of the key. The movement of the fingers 3A of the lock discs 3 in the sinuous grooves 10C, 10D will generate rotational movements of the various discs 3 relative to the axis (B) of the chamber (1A) of the rotor (1).

In embodiments of the rotor for the lock according to the invention, the rotor is not associated with a stop 5.

In the shape of the stem figures 7 and 8 (see in particular figure 8A ), the outer edge of the frustoconical hollow defines a flat annular zone 10G4 extended by two flat 10G2,10G3, a first flat 10G2 connecting the annular zone 10G4 to the flat part 10M of the rod 10 of the key.

The hollow 10F of the rod 10A is also useful when machining the rod to form the sinuous grooves 10C, 10D.

The lock of the figure 1 (exploded view) comprises: (a) a stator (31) with an open chamber (30) with a longitudinal central axis (A), and (b) a rotor (1) arranged in said open chamber (30) of the stator ( 31), said rotor (1) having an open chamber (1A) with a central axis (B) in which is located an assembly (100) comprising a series of flakes or lock discs (3) intended to undergo at least one movement of rotation relative to the central axis (B) of the chamber (1A) of the rotor (1) during the introduction of the key (10) in an open central passage (15) of the series of straws or discs of lock (3).
Pins 4 in the form of a cylinder with an axis parallel to the axis B serve as a connecting means between the rotor 1 and the stator 31. Each lock pin 4 is able to move between a first (locking) position in which the pin 4 extends partially in a groove 1D and in an internal groove 30B of the stator 31 (see figures 10A and 10B ), and a second position in which the pin 4 extends partially in the groove 1D of the rotor and in an axial groove 3D of the assembly 100 of lock discs 3 (see figure 11C ). According to one possible embodiment, the displacement of the pin from the first position to the second position is done against an elastic means or spring 110. This means 110 is for example a leaf spring comprising a first part integral with a flat inserted in one or two notches of the rotor 1, said flat being extended by a curved part attached to a second flat part. The elastic means 110 therefore rotate with the rotor 1. The second part is adapted to be supported on a pin.

In the simplified embodiment of the lock according to the invention, it does not include such elastic means 110.

The movement of the pins between its first locking position and its second position is advantageously ensured by the rotation of the rotor 1 controlled by the setting in rotation of the transmission disc (8D) (relative to the stator 31), while the movement of the pins 4 between their second position and their first position is controlled by the rotation of the locking discs (3) (relative to the rotor 1) during the withdrawal of the rod 10A of the key 10 out of the passage 15 of the set 100 of discs lock 3.

The locking discs (3) each have a circular locking surface (3C) with one or more peripheral notches (3B),

One or more locking discs (3) have a flat or curvature between its outermost circular peripheral edge 3C and the bottom of its notch 3B, so that after the lock pins (4) extend into the recess or recesses formed by the alignment of notches 3B of the locking discs (3), the rotation of one or more locking discs generated by a movement of withdrawal of the locking key (translational movement) will ensure that 'at least two flats of one or more locking discs 3 act respectively on one of the lock pins to move it to its first position.

The movement of the pins (4) is also guided by the shape of the 1D grooves, in particular its substantially trapezoidal cross section extending between a substantially rectangular outer window of width less than the diameter of the pin (4) to limit its removal from it. a 1D groove, and a substantially rectangular interior window of width greater than the diameter of the pin, advantageously between 1.1 and 3 times (preferably between 1.2 and 2 times) the diameter of the pin (4 ). The outer window is connected to the inner window by flats serving as means for guiding the pins (4) and locking wedges.

The rotor 1 comprises at least one transmission disc (8D) of the rotational torque to the rotor during a rotation of the unlocking key (10), after introduction of the substantially cylindrical rod into the open central passage (15) of the series of straws or locking discs (3) by translational movement of the rod of the unlocking key (10) in the direction of the central axis (B) of the open chamber of the rotor (1). Said transmission disc (8D) (advantageously located at the rear of the series of lock discs 3) has a central opening (8E) partially circular with a flat edge (8E1) adapted to at least partially match the flat part (10M ) of the rod (10A) of the unlocking key (10) after the introduction of the free end of the rod (10A) in the open central passage (15) of the series of straws or locking discs (3) by translation in the direction of the central axis (B) of the open chamber (1A), said transmission disc (8D) having means (8D1) cooperating directly with an element (1M) of the rotor (1) so as to that a rotation of the transmission disc causes a rotation of the rotor (1) over a first angular sector of rotation.

The locking discs (3) are arranged in the open chamber (1A) of the rotor so as not to exert torque on the rotor at least during said first angular sector of rotation of the transmission disc.

Thus when the key is inserted in the central passage 15 the locking discs 3, it is possible to subject in one direction or the other direction a rotation of the assembly 100 relative to the rotor 1, to bring the axial groove 3D of the assembly 100 facing a 1D groove of the rotor. In this position, a rotation of the rotor caused by the drive of the transmission disc 8D will then cause a movement of the pin towards its second position against the action of the return means 110. (see figure 9C ) It will then be possible to rotate the rotor relative to the stator to allow the lock to open.

The figure 10 shows the position of a lock disc 3 in the rotor 1 without the presence of the key 10. The disc in this position prevents any movement of the latch pins 4 out of the groove 30B of the stator 31. Indeed, part of the peripheral surface of the disc 3 closes the groove 1D (which is not found opposite the groove 30B).

The lock may include a rotor 1, the rear part of which is optionally associated with a stop rod 5 with a central axis C (longitudinal axis of the passages 15 of the lock disks 3) corresponding to the axis A or B. This stop rod 5 is intended to fit into the hollow 10F of the free end 10E of the rod 10A, while forming with the rear part of the chamber 1A of the rotor 1 a free space intended to receive the free end of the key 10 When the rotor 1 is associated with such a rod or stopper 5, the rod or stopper 5 can serve as a means to limit the insertion of an inappropriate key shank.

The rear part of the rotor 1 has a threaded part suitable for fixing a closing plate, which during the rotation of the rotor can either be in a closed position or in an open position (then allowing the opening for example of 'a door or a cover).

In the embodiment of figures 1 and 12A , said cylindrical stop (5) is movably or removably mounted on the stator or the rotor or the assembly (100), so that said stop (5) can undergo a rotational movement relative to the axis central (C) of the open central passage of the flakes or discs (3).

Still in the form of the figure 1 , the rotor (1) has a front edge associated with a cover (8) to ensure at least the maintenance of the assembly (100) comprising the flakes or lock discs 3 in the volume of the chamber (1A) of the rotor and / or to ensure the maintenance of the rotor (1) with the assembly (100) in the open chamber (30) of the stator (31), said cover having a (circular) opening (8A) adapted for the passage of the rod or stem part (10A) of the key (10) in the central passage (15) of the spangles or discs (3) of said assembly.

The cover (8) and / or the rotor (1) can be associated with a system for closing the opening of the cover when the stem of the key is not inserted into the central passage (15) of said assembly (100 ) of the rotor (1).

The return means (6) is a helical spring, one end of which rests on the rotor (1) or on the assembly (100) of the rotor, and the other end of which rests on the cover (8).

The rotor (1) has a front end (1B) bearing against a circular groove (32) of the chamber (30) of the stator (31) and a rear end (1C) intended to cooperate with a retaining means (such as a clip ring or a nut which is screwed on the end 1C of the rotor 1 which extends outside the rotor 1) to oppose the withdrawal of the rotor (1) out of the chamber (30) of the stator (31) . The front end forms a sort of ring 1B projecting from the cylindrical face of the rotor 1 which has the windows 1D. This kind of ring 1B then advantageously has a groove 1B1, 1B2 situated in the extension of a window 1D, this to facilitate the placement of the pins 4 during the assembly of the rotor with the assembly 100 of lock discs 3.

Between the lock discs 3, it is possible to add one or more anti-friction discs. The lock discs 3 could also have been provided with a sliding coating. These anti-friction discs 8F are for example washers with a substantially circular central opening of diameter at least equal to the diameter of the rod 10A of the key 10 and whose outer periphery is defined with a diameter smaller than the diameter separating the latch pins. 4 in their second position. Each anti-friction washer 8F may or may not be removably attached to a disk 3, 8D.

• la deuxième fenêtre (1D2) de chaque fente longitudinale présente au moins une ou des parties ouvertes avec un écartement inférieur au diamètre de la tige cylindrique de la goupille de verrou (4) (voir par exemple figure 10A - ceci permettant que moins de 50% de la goupille ne s'étende hors du rotor par la deuxième fenêtre 1D2).
• la deuxième fenêtre (1D2) s'étend entre deux bords longitudinaux écartés l'un de l'autre d'un écartement compris entre 0,5 et 0,95 fois le diamètre de la tige de la goupille (4), tandis que la première fenêtre s'étend entre deux bords longitudinaux écartés l'un de l'autre d'un écartement compris entre entre 1,1 et 3 fois le diamètre de la tige de la goupille (4), les bords longitudinaux de la deuxième fenêtre (1D2) d'une fente longitudinale étant situés dans un secteur angulaire compris dans le prolongement radial du secteur angulaire des bords longidtudinaux de la première fenêtre (1D1) de la fente longitudinale considérée. (voir figure 10A)
• les bords longitudinaux de la première fenêtre (1D1) d'une fente longitudinale (1D) sont reliées chacune à un bord longitudinal de la deuxième fenêtre (1D2) par une face de guidage au moins partiellement plane sur laquelle la face cylindrique d'une goupille (4) peut se mouvoir ou rouler.
• la série de paillettes ou disques de verrouillage (3) présentent chacun au moins un bord présentant une première partie 3C (dans le cas présent sous forme de plusieurs tronçons suivant chacun un secteur circulaire distinct) s'opposant au mouvement d'une goupille 4 vers sa deuxième position, et une deuxième partie 3B (sous forme de plusieurs tronçons distincts s'étendant entre des tronçons de la première partie 3C) permettant éventuellement un mouvement d'une goupille vers sa deuxième position, lors d'un mouvement de rotation du rotor, lorsque les disques de verrou ont chacun un tronçon de leur deuxième partie formant une gorge longitudinale de réception de la goupille 4 considérée.
• le rotor comprend au moins un moyen de protection 9 contre une tentative d'effraction par un foret, ledit moyen étant avantageusement choisi parmi le groupe constitué d'un capot de protection 8 de l'ouverture avant de la chambre ouverte (1A) du rotor (1), un cylindre de protection ou un disque de protection avec une ouverture centrale circulaire adaptée pour recevoir la tige (10A) de la clef de déverouillage, ledit cylindre de protection 9 et/ou disque de protection étant de préférence monté(s) rotatif(s) par rapport à la chambre ouverte (1A) du rotor (1).
• le rotor comprend ou est associé sur sa paroi extérieure cylindrique, au voisinage de son ouverture avant, à une protubérance extérieure annulaire, dont l'épaisseur est au moins égale à la hauteur de la partie des goupilles (4) sortant des fentes longitudinales (1D).
• le rotor (1) est éventuellement associé à une butée (5) sous forme de tige ou barre s'étendant partiellement dans le passage central ouvert de la série de paillettes ou disques de verrouillage (3) et/ou dans un passage de disque de transmission (8D).
• des ou les disques de verrouillage (3A) sont séparées entre eux par un disque anti-friction 8F, tandis qu'avantageusement le disque de transmission (8D) prend appui sur une surface arrière du rotor avec interposition d'un disque anti-friction.
• le rotor présente une paroi d'appui arrière avec une face perpendiculaire à l'axe central (B) de la chambre ouverte du rotor (1),. Il est en outre associé à un ressort hélicoïdal agissant sur un disque de verrouillage (3) avec interposition d'un disque anti - friction.
• le disque de transmission de couple (8D) est par exemple situé à l'arrière de la série de disques de verrouillage (3). Le disque de transmission aurait également pu se trouver entre deux disques de verrouillage.
• le rotor peut également comprendre deux disques de transmission, voire plus. Dans cette forme de réalisation, la tige de la clef peut présenter deux parties planes distinctes, une partie plane servant à commander la rotation d'un disque de transmission (tout en ne commandant pas la rotation de l'autre disque de transmission), tandis que l'autre partie plane de la tige 10A sert à commander la rotation de l'autre disque de transmission. Dans cette version, les goupilles 4 sont avantageusement adaptées pour s'opposer à la rotation du rotor (1) lorsque le plat d'une clef génère un effort ou couple que sur un seul disque de transmission. Par exemple, les goupilles 4 sont chacune composées de deux parties distinctes.

In the embodiment shown, each longitudinal slot (1D) (the slots being diametrically opposed) each adapted to receive a lock pin (4) in the form of a cylindrical rod present or is associated with at least one means forming a stop to limit movement of the latch pin (4) out of the slot through the second window (1D2) (see figure 4 ). This facilitates the placement of a rotor in a chamber of a stator. This embodiment then presents one or more of the following details:

• the second window (1D2) of each longitudinal slot has at least one or more open parts with a spacing less than the diameter of the cylindrical rod of the lock pin (4) (see for example figure 10A - this allowing less than 50% of the pin to extend out of the rotor through the second window 1D2).
• the second window (1D2) extends between two longitudinal edges spaced from each other by a spacing between 0.5 and 0.95 times the diameter of the shank of the pin (4), while the first window extends between two longitudinal edges spaced from each other by a spacing of between 1.1 and 3 times the diameter of the shank of the pin (4), the longitudinal edges of the second window ( 1D2) of a longitudinal slot being located in an angular sector included in the radial extension of the angular sector of the longidtudinaux edges of the first window (1D1) of the longitudinal slot considered. (see figure 10A )
• the longitudinal edges of the first window (1D1) of a longitudinal slot (1D) are each connected to a longitudinal edge of the second window (1D2) by an at least partially planar guide face on which the cylindrical face of a pin (4) can move or roll.
• the series of sequins or locking discs (3) each have at least one edge having a first part 3C (in this case in the form of several sections each following a distinct circular sector) opposing the movement of a pin 4 towards its second position, and a second part 3B (in the form of several distinct sections extending between sections of the first part 3C) possibly allowing a movement of a pin towards its second position, during a rotational movement of the rotor , when the lock discs each have a section of their second part forming a longitudinal groove for receiving the pin 4 in question.
• the rotor comprises at least one means of protection 9 against an attempted break-in by a drill, said means being advantageously chosen from the group consisting of a protective cover 8 of the front opening of the open chamber (1A) of the rotor (1), a protection cylinder or a protection disc with a circular central opening adapted to receive the rod (10A) of the unlocking key, said protection cylinder 9 and / or protection disc being preferably mounted (s) rotary (s) with respect to the open chamber (1A) of the rotor (1).
• the rotor comprises or is associated on its cylindrical outer wall, in the vicinity of its front opening, with an annular outer protuberance, the thickness of which is at least equal to the height of the part of the pins (4) emerging from the longitudinal slots (1D ).
• the rotor (1) is optionally associated with a stop (5) in the form of a rod or bar extending partially in the open central passage of the series of straws or locking discs (3) and / or in a disc passage of transmission (8D).
• one or more locking discs (3A) are separated from one another by an anti-friction disc 8F, while advantageously the transmission disc (8D) bears on a rear surface of the rotor with the interposition of an anti-friction disc.
• the rotor has a rear bearing wall with a face perpendicular to the central axis (B) of the open chamber of the rotor (1) ,. It is also associated with a helical spring acting on a locking disc (3) with the interposition of an anti - friction disc.
• the torque transmission disc (8D) is for example located at the rear of the series of locking discs (3). The transmission disc could also have been between two locking discs.
• the rotor may also include two transmission disks, or even more. In this embodiment, the shank of the key may have two distinct flat parts, one flat part serving to control the rotation of one transmission disc (while not controlling the rotation of the other transmission disc), while that the other flat part of the rod 10A serves to control the rotation of the other transmission disc. In this version, the pins 4 are advantageously adapted to oppose the rotation of the rotor (1) when the flat of a key generates a force or torque on a single transmission disc. For example, the pins 4 are each made up of two separate parts.

Advantageously, the rotor is composed of two separate cylindrical sleeves, preferably locked by separate pins and each associated with a separate transmission disc.

The subject of the invention is also a lock comprising a stator (31) defining an open chamber (30) receiving a rotor (1) according to the invention, said open chamber (30) at least partially having a cylindrical lower surface (30A). associated with at least two longitudinal grooves (30B) adapted to each receive a part of pin (4) in the locking position of the rotor (1) relative to the stator (31), while the cylindrical lower surface (30A) is adapted to cooperate with the latch pins (4) during a rotation of the rotor (1) controlled by the unlocking key (10), said rotation of the rotor (1) generating the movement of the pins (4) out of the longitudinal grooves (30B) ) of the stator (30) to bring the pins (4) into their second position, possibly against an elastic means.

Advantageously, the stator (31) has at its front part a support with a central cylindrical front opening communicating with the open chamber (30), said central opening of the front part and said open chamber (30) having the same central axis (A), the diameter of the front cylindrical opening being greater than the diameter of the open chamber (30) increased by twice the height of the part of a latch pin (4) protruding from a longitudinal slot (1D) rotor (1).

Preferably, it comprises a retaining means to oppose the withdrawal of the rotor (1) from the chamber (30) of the stator (31).

The figure 12A shows the rotor 1 in the locked position relative to the stator 31, the pins 4 being held in position to each extend partially in a groove 30B of the stator and partially in the window 1D of the rotor 1. In this position, the rotational movements of the 3 discs are possible.

To the figure 12B the shank 10A of the key is partially engaged in the rotor disc assembly 1 (not provided with the stopper 5). The pins 4 then extend further in the window ID of the rotor and partially in a groove 30B of the stator 31, further preventing any rotation of the rotor 1 relative to the stator 31.

To the figure 12C , the rod 10A of the key is fully inserted into the rotor 1, the end of the key bearing against the bottom thereof. The pins 4 are always in the locked position, that is to say partially in the groove 30B of the stator and partially in the window 1D of the rotor, the shape of the window ensuring that the pin is kept in the locked position as long as the disc 8D transmission is rotated relative to the stator 31. In this position, the lock discs have notches forming two longitudinal grooves ready to receive the pins 4, as soon as the 8D transmission disc allows rotation of the rotor with sufficient torque to move the pins 4 out of the grooves 30B of the stator 31.

To the figure 12D , the rotor 1 has undergone a rotation thanks to the disc 8D to exert a sufficient force to push the pins 4 out of the grooves 30B of the stator 31, towards the grooves formed by the notches of the lock discs.

The embodiments of the locks shown can be used in a secure device, in particular a safe, padlock, cabinet, etc.

Claims (12)

1. Rotor (1) for a lock comprising (a) a stator (31) with an open chamber (30) with a longitudinal central axis (A), intended to receive said rotor (1), said rotor (1) having an open chamber (1A) with a central axis (B) in which is located an assembly (100) comprising a series of locking discs (3) intended to undergo at least one relative rotational movement with respect to the central axis (B) of the open chamber (1A) of the rotor (1) when inserting a locking key (10) into an open central passage (15) of the series of discs (3), said locking discs (3) each having at least one finger or a protuberance (3A) directed towards the open central passage (15), the locking discs (3) each having a circular locking surface (3C) with one or more peripheral notches (3B),
   for which said key (10) is a key for unlocking the rotor (1) which comprises a substantially cylindrical rod or part of a rod (10A) with a central axis (10X) and having on its substantially cylindrical outer face (10B) at least two sinuous guiding grooves (10C, 10D) adapted to receive at least one finger or protuberance of locking tumblers or discs (3), and a free end (10E) with a guiding means for guiding each finger or protuberance (3A) in one of said at least two sinuous guiding grooves (10C, 10D), said substantially cylindrical rod (10A) further having a planar portion (10M) adapted to be inserted at least partially into the open central passage (15) after the introduction of the free end into the open central passage (15) of the series of locking tumblers or discs (3) by translation in the direction of the central axis (B) of the open chamber (1A),
   wherein said rotor (1) comprises at least two longitudinal slots (1D) each adapted to receive a latch pin (4) movable between a first position in which the considered latch pin (4) extends only partially in a longitudinal slot (1D) and partially outside said rotor (1) out of the considered longitudinal slot (1D), and a second position in which the considered latch pin (4) extends only partially in a longitudinal slot (1D) and partially in the chamber (1A) of the rotor (1) outside the considered longitudinal slot (1D), the movement of each latch pin (4) from its first position to its second position being effected by a rotational movement of the rotor (1) when the latter is placed in a stator,
   for which the locking discs (3) are each rotatably mounted in the open chamber (1A) of the rotor (1) so that the translational movement of the unlocking key (10) of the rotor (1) in the direction of the central axis (B) of the open chamber (1A) of the rotor (1) rotates the locking discs (3) between themselves and with respect to the rotor (1), so that, after one rotation of the discs between them, peripheral notches (3B) of the locking discs (3) are aligned with each other to form at least one or two recesses suitable for receiving the latch pins (4),
   wherein each longitudinal slot (1D) extends between a first window (1D1) facing the open chamber (1A) of the rotor (1), and a second window (1D2) extending along the outer cylindrical face of the rotor (1),
   wherein the latch pins (4) each have the shape of a cylindrical rod wit a diameter (D) of 2 to 5mm made of steel;
   in which the rotor (1) comprises at least one transmission disc (8D) of torque to the rotor during a rotation of the unlocking key (10), after introduction of the substantially cylindrical rod (10A) in the passage open central (15) of the series of locking discs (3) by translational movement of the rod (10A) of the unlocking key (10) in the direction of the central axis (B) of the open chamber of the rotor (1), said transmission disc (8D) having a central opening (8E) partially circular with a flat edge (8E1) adapted to at least partially match the flat part (10M) of the rod (10A) of the unlocking key (10) after the introduction of the free end of the rod (10A) in the open central passage (15) of the series of locking discs (3) by translation in the direction of the central axis (B) of the open chamber (1A), said transmission disc (8D) having means (8D1) cooperating directly with an element (1M) of the rotor (1) so that a rotation of the transmission disc (8D) causes a rotation of the rotor (1) over a first angular sector of rotation, and
   wherein the locking discs (3) are arranged in the open chamber (1A) of the rotor so as not to exert torque on the rotor (1) at least during said first angular sector of rotation of the transmission disc (8D),
   in which each longitudinal slot (1D) each adapted to receive a latch pin (4) in the form of a cylindrical rod has or is associated with at least one means forming a stop for limiting the movement of the latch pin (4) out of the slot through the second window (1D2), the second window (1D2) of each longitudinal slot (1D) advantageously having at least one or more open parts with a spacing less than the diameter of the cylindrical rod of the latch pin (4)
   in which the second window (1D2) extends between two longitudinal edges spaced from each other by a spacing of between 0.5 and 0.95 times the diameter of the rod of the pin (4), while that the first window (1D1) extends between two longitudinal edges spaced from each other by a spacing between 1.1 and 3 times, preferably 1.2 to 2 times the diameter of the rod the pin (4),
   in which the longitudinal edges of the second window (1D2) of a longitudinal slot (1D) are located in an angular sector included in the radial extension of the angular sector of the longitudinal edges of the first window (1D1) of the considered longitudinal slot (1D), and wherein the longitudinal edges of the first window (1D1) of a longitudinal slot (1D) are each connected to a longitudinal edge of the second window (1D2) by an at least partially planar guiding face on which the cylindrical face of a pin (4) can move.
2. Rotor according to claim 1, characterized in that one or more locking discs (3) have a flat part between its peripheral edge and the bottom of its notch (3B), so that after the latch pins (4) extend into the recess or recesses formed by the alignment of notches (3B) of the locking discs (3), the rotation of one or more locking discs (3) generated by a movement of withdrawal of the locking key (10) (translational movement parallel to the central axis (B) of the open chamber (1A)) at least two flat parts of one or more locking discs (3) act respectively on one of the latch pins (4) to move it to its first position.
3. Rotor according to any one of the preceding claims, characterized in that the series of locking discs (3) each have at least one edge having a first part (3C) opposing the movement of a pin (4) towards its second position, and a second part (3B) allowing movement of a pin (4) towards its second position, during a rotational movement of the rotor (1).
4. Rotor according to any one of the preceding claims, characterized in that it comprises at least one means of protection (8,9) against an attempted break-in by a drill, said means (8,9) being advantageously selected from the group consisting of a protective cover (8) of the front opening of the open chamber (1A) of the rotor (1), a protective cylinder or a protective disc (9) with a circular central opening suitable for receiving the rod (10A) of the unlocking key (10), said protection cylinder and/or protection disc (9) preferably being mounted to rotate relative to the open chamber (1A) of the rotor (1).
5. Rotor according to any one of the preceding claims, characterized in that it comprises or is associated on its cylindrical outer wall, in the vicinity of its front opening, with an annular outer protuberance, the thickness of which is at least equal to the height of the part of the pins (4) coming out of the longitudinal slots (1D).
6. Rotor according to any one of the preceding claims, characterized in that it is associated with a stop (5) in the form of a rod or bar extending partially in the open central passage (15) of the series of locking discs (3) and/or in a passage of a transmission disc (8D).
7. Rotor according to any one of the preceding claims, characterized in that one or more locking discs (3A) are separated from each other by an anti-friction disc, and in that advantageously the transmission disc (8D) takes support on a rear surface of the rotor with the interposition of an anti-friction disc.
8. Rotor according to any one of the preceding claims,
   wherein the rotor (1) has a rear bearing wall with a face perpendicular to the central axis (B) of the open chamber of the rotor (1), characterized in that it is associated with a helical spring acting on a locking disc (3) with the interposition of an anti-friction disc.
9. Rotor according to any one of the preceding claims, characterized in that it is associated with one or more elastic means (110) acting on one or more latch pins (4), so that the movement of a latch pin (4) from its first position to its second position is carried out against the action of at least one elastic means (110).
10. Lock comprising a stator (31) defining an open chamber (30) receiving a rotor (1) according to any one of the preceding claims, said open chamber (30) having at least partially a cylindrical lower surface (30A) associated with at least two longitudinal grooves (30B) adapted to each receive a pin part (4) in the locking position of the rotor (1) relative to the stator (31), while the cylindrical lower surface (30A) is adapted to cooperate with the latch pins (4) during a rotation of the rotor (1) controlled by the unlocking key (10), said rotation of the rotor (1) causing the movement of the pins (4) out of the longitudinal grooves (30B) of the stator (30) to bring the pins (4) into their second position against the elastic means (110).
11. Lock according to the preceding claim, characterized in that the stator (31) has at its front part a support with a central cylindrical front opening communicating with the open chamber (30), said central opening of the front part and said open chamber (30) having the same central axis (A), the diameter of the front cylindrical opening being greater than the diameter of the open chamber (30) increased by twice the height of the part of a latch pin (4) protruding outside a longitudinal slot (1D) of the rotor (1), and in that it advantageously comprises a retaining means (9) to oppose the withdrawal of the rotor (1) of the chamber (30) of the stator (31).
12. Secure device, in particular safe, padlock, cabinet, comprising at least one lock according to one of the claims 10 and 11.

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