FR2835275A1 - Door lock system comprises cover with lock activating button and safety cylinder comprising double stator unit, bit engaging locking means is rotationally connected to rotor by transmission - Google Patents

Abstract

The lock system comprises a cover (G) with a button having an activating part (57) activating the locking means and a safety cylinder (C) comprising a double stator unit (1) defining first and second stators (3a,3b). A bit (6) engages the locking means. A barrel rotor (10) in the first stator, with a key housing (11), operates the stator. A first de-clutchable transmission (31) can rotationally connect the rotor with the bit, and a second transmission (20) in the second stator can engage the button activating part in order to rotationally connect the button with the bit. Independent claims are included for a safety cylinder and a door lock comprising the system.

Description

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 The present invention relates to a door lock system comprising a safety cylinder and an external lining provided with an operating button, a corresponding safety cylinder and a lock comprising said system.

e f carré femelle d'entraînement, ladite tige étant solidaire en rotation d'un fouillot apte à commander le pêne demi-tour. L'autre extrémité de la tige est généralement insérée dans le carré d'entraînement d'une béquille portée par une deuxième garniture qui est fixée sur l'autre face de l'ouvrant. Le bouton de manoeuvre comprend une partie de préhension destinée à être saisie par un utilisateur pour manoeuvrer ledit bouton, une partie de montage permettant son montage sur la garniture, et une partie d'actionnement destinée à actionner les moyens de condamnation de la serrure montée sur ledit ouvrant. Généralement, le bouton de manoeuvre est accouplé à une deuxième tige de section carrée par insertion d'une extrémité de la tige dans une partie femelle de section carrée du bouton, appelée également carré femelle d'entraînement, cette deuxième tige étant solidaire en rotation d'un deuxième fouillot, dit de condamnation, apte à commander le pêne dormant. L'autre extrémité de cette deuxième tige est accouplée à un bouton à fente ou présente une fente, apte à coopérer avec une clé standard, qui est accessible par l'autre coté de l'ouvrant par une ouverture ménagée sur la deuxième garniture. There are known sash lock systems comprising a mortise lock which comprises, in a housing, a deadbolt, a latch bolt and means for locking said deadbolt, and a gasket, intended to be fixed on the 'one of the sides of the opening, and provided with a crutch or door handle and an operating button mounted mobile in rotation on the lining. The stand is coupled to a square section rod by inserting one end of the rod into a square section female part of the stand, also called

ef female square drive, said rod being integral in rotation with a follower capable of controlling the latch bolt. The other end of the rod is generally inserted in the drive square of a crutch carried by a second lining which is fixed on the other face of the opening. The operating button comprises a gripping part intended to be grasped by a user to operate said button, a mounting part allowing it to be mounted on the lining, and an actuating part intended to actuate the means for locking the lock mounted on said opening. Generally, the operating button is coupled to a second rod of square section by insertion of one end of the rod into a female part of square section of the button, also called female square drive, this second rod being integral in rotation d 'a second follower, called a condemnation, capable of controlling the deadbolt. The other end of this second rod is coupled to a slotted button or has a slot, capable of cooperating with a standard key, which is accessible from the other side of the opening by an opening made on the second lining.

 Such a known system is, for example, intended to be mounted on a door of a room of the bathroom or toilet type, with the operating button accessible from the inside. The slotted button then allows anyone, if necessary, to control the deadbolt from the outside to open the door, using a standard key or a screwdriver.

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 The invention aims to provide a new lock system using a door trim provided with an operating button while improving the locking of the door.

 For this, the invention provides a system for an opening lock comprising a lining, intended to be fixed on one of the sides of the opening, and an operating button mounted so as to be able to move in rotation on the lining, said operating button. comprising a gripping part intended to be grasped by a user to operate said button, a mounting part allowing it to be mounted through said lining, and an actuating part intended to actuate means for locking a lock mounted in said opening , characterized in that the said system comprises a safety cylinder comprising: - a double stator block intended to be mounted longitudinally through the opening and comprising a central notch, the said stator block defining on either side of the said notch two stators, each stator being pierced with a substantially cylindrical longitudinal bore, each bore emerging, on the one hand, by an integral end re, in said notch and, on the other hand, by an external end, on a longitudinal end face of said stator block; - A bit, intended to cooperate with said means for locking the lock, mounted in said notch and movable in rotation about a longitudinal geometric axis of said stator block; - a barrel rotor arranged coaxially with said bit in a first of said stators, for operating the latter using an associated key, said barrel rotor comprising a key housing intended to receive the body of said associated key; - A first transmission means, disengageable, able to mechanically link in rotation said barrel rotor with said bit, said first means being for example movable in translation relative to said rotor between, on the one hand, a disengaged position, which occupies in the absence of the key in said key housing and in which it releases the rotation of said bit relative to said barrel rotor and, on the other hand, a engaged position, in which it makes a mechanical connection in rotation between said barrel rotor and said bit; and - a second transmission means arranged in the second of said stators, comprising at the outer end of said second stator a

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 drive part, able to cooperate with the actuating part of the operating button to mechanically link the operating button in rotation with said bit.

 Thus, according to the invention, a special safety cylinder with a double stator block is combined with a lining provided with a button. Such a system guarantees secure locking on the side of the opening opposite the operating button, unlike other systems using a simple trim provided with a button. The exclusive use so far of such a fitting for rooms of the bathroom and toilet type did not encourage them to be combined with a safety cylinder of the double blockstator type because, in such uses, a secure locking of the outside the room is not necessary. On the contrary, for safety reasons, it is preferable that the locked door can be opened easily by anyone.

 Advantageously, the second transmission means is movable in translation relative to said stator block between, on the one hand, a engaged position, which it occupies in the absence of the key in said barrel rotor and in which its part d drive is directly or indirectly mechanically linked in rotation with said bit and, on the other hand, a disengaged position in which its drive part is free to rotate relative to said bit, said first transmission means being moved to its position engaged by means of said key when the latter is inserted into said key housing, said first transmission means in its engaged position cooperating with said second transmission means to move the latter to its disengaged position, so that said operating button is then inoperative with respect to said bit.

 In one embodiment, the drive part of the second transmission means comprises a male part, of non-circular cross section, which projects out of the bore of the second stator, the actuating part of the operating button comprising a female part provided with a housing of cross section complementary to that of the protruding male part, so that the male driving part is able to cooperate by interlocking with said female actuating part of the operating button for mechanically linking in rotation the operating button with said bit.

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r d'entraînement femelle est apte à coopérer par emboîtement avec la partie d'actionnement mâle du bouton de manceuvre pour lier mécaniquement en rotation le bouton de manoeuvre avec ledit panneton. In another embodiment, the drive part of the second transmission means comprises a female part provided with a housing, of non-circular cross section, the actuating part of the maneuver button comprising a male part of section complementary to that of said housing, so that the part

r female drive is able to cooperate by interlocking with the male actuating part of the maneuvering button to mechanically link in rotation the operating button with said bit.

 It is thus possible according to the invention to combine a special safety cylinder with different linings having buttons having male or female parts.

 In the case of a second disengageable transmission means, this may advantageously comprise a declutching rod carrying said actuating part and intended to be pushed back by its free end oriented towards said barrel rotor towards its position engaged by said first transmission means against an elastic return means in the direction of its engaged position, said system comprising a generally cylindrical false-rotor, arranged coaxially with said blade in the bore of said internal stator, integral in rotation with the blade by a first internal end part and having at its other external end a transverse wall provided with a bore, in which said disengaging rod is inserted to guide the latter in translation, and the actuating part carrying a first means dog clutch capable of engaging with a second clutch means complementary to said first clutch means, worn by the transverse wall of the false-rotor, in the engaged position of the declutching rod and in disengaging from said second clutch means in the disengaged position of the declutching rod.

 Advantageously, said elastic return means is disposed in the aforementioned housing between said male and female parts to exert on the disengaging rod a return force in the direction of its engaged position.

 In embodiments in which the second transmission means is not disengageable, the second transmission means may advantageously comprise a generally cylindrical false-rotor, arranged coaxially with said bit in

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 the bore of said internal stator, integral in rotation with the bit by a first internal end part and having at its other external end a transverse wall, said transverse wall carrying a projecting rod forming said male actuating part or being provided with said housing forming said female actuating part.

 When the actuating part comprises a female part, the mounting part and the female part of the operating button are advantageously formed by a generally cylindrical ring provided with a housing for the interlocking of the male driving part of the second means of transmission.

 When the actuating part comprises a male part, the projecting rod forming said male actuating part of the operating button extends from a substantially solid cylindrical part forming the mounting part of said operating button.

 The lining may comprise a plate intended to be arranged parallel to the faces of the opening, said plate comprising a through opening in which the mounting part is inserted, at least one circlip being engaged elastically in a peripheral annular groove formed on the outside. of said mounting part for retaining axially, with rotational mobility, said operating button on the packing plate.

 The system according to the invention may also comprise a second lining, intended to be fixed to the other face of the opening, and provided with an opening making part of the end face of the block accessible from the outside. stator, or all of it intended to allow the insertion of an associated key in the key housing of the rotor, one of the two linings carrying protruding screw wells intended to be inserted in bores passing through the opening to allow the assembly of the two linings to one another on the opening by means of assembly screws, passing through two holes in the other lining and screwed into said screwing wells. Furthermore, the linings can each carry a crutch actuating a bolt follower half the turn of the lock.

 The present invention also relates to a safety cylinder as defined in the system described above, the drive part of which is intended to cooperate with the actuation part of a

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 operating button mounted mobile in rotation on an opening trim.

 The invention also provides a door lock comprising the system defined above and locking means capable of cooperating with the bit of said system.

sûreté et de la garniture extérieure formant le système de l'invention, sure selon un premier mode de réalisation, monté à travers un ouvrant ; - la figure 2 est une vue analogue à la figure 1 sur laquelle seul le faux-rotor du cylindre est représenté, dans une position décalée d'un quart de tour par rapport à celle de la figure 1 ; - la figure 3 est une vue en coupe axiale partielle du cylindre de sûreté et de la garniture extérieure formant le système de l'invention, selon un deuxième mode de réalisation ; - la figure 4 est une vue analogue à la figure 3 illustrant un troisième mode de réalisation ; et, - la figure 5 est une vue analogue à la figure 3 illustrant un quatrième mode de réalisation avec un bouton de manoeuvre débrayable. The invention will be better understood, and other objects, details, characteristics and advantages will appear more clearly during the detailed explanatory description which will follow of four particular presently preferred embodiments of the invention, with reference to the appended schematic drawing. . In this drawing: - Figure 1 is an axial sectional view of the cylinder of

safety and of the external lining forming the system of the invention, safe according to a first embodiment, mounted through an opening; - Figure 2 is a view similar to Figure 1 in which only the false rotor of the cylinder is shown, in a position offset by a quarter of a turn relative to that of Figure 1; - Figure 3 is a partial axial sectional view of the safety cylinder and the outer lining forming the system of the invention, according to a second embodiment; - Figure 4 is a view similar to Figure 3 illustrating a third embodiment; and, - Figure 5 is a view similar to Figure 3 illustrating a fourth embodiment with a disengageable operating button.

e fi préférence celle orientée vers l'intérieur du local. Une description détaillée du cylindre de sûreté C puis de la garniture intérieure G va à présent être effectuée. As shown in Figures 1 and 2, the system comprises a safety cylinder C mounted longitudinally through the thickness of a door 51 of a room and a gasket G, called interior, carrying an operating button B, and mounted on one 5la of the faces of the door,

e fi preferably that directed towards the interior of the room. A detailed description of the safety cylinder C and then of the interior trim G will now be made.

 The safety cylinder C comprises a double stator block 1 in the form of a substantially rectangular rectangular beam, comprising a rectangular transverse notch 2 formed at substantially half the length of said beam and extending over substantially two thirds of its height. On each side of the rectangular notch 2, the double stator block 1 forms two stators 3a and 3b each having a

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 cylindrical longitudinal bore 4a and 4b respectively. Each bore 4a and 4b opens, on the one hand, by an external end on a longitudinal end face, 5a and 5b respectively, of the stator block 1 and, on the other hand, by an internal end in the notch 2 The bores 4a and 4b are coaxial and of the same diameter, their common geometric axis A defining the axis of rotation of all the moving parts of the safety cylinder. The stator block 1 also comprises, next to the notch 2, in the middle of the beam, a transverse hole 67 for fixing the safety cylinder in a lock (not shown), for example a mortise lock.

 A bit 6 is mounted in the notch 2, movable in rotation about the axis A. The bit 6 has a radially internal cylindrical collar 7 pierced with an axial orifice 8. The bit 6 also has a maneuvering tab 9 s extending radially outside the cylindrical collar 7 in order to cooperate with the means for locking the lock with which the safety cylinder C. is associated

The axial orifice 8 is pierced in two parts of different diameters separated by a shoulder 68; a first part of smaller diameter is oriented towards the first external stator 3a while the second part is oriented towards the second stator 3b. In the bore 4a of the first stator 3a, oriented towards the external face 51b of the door, a barrel rotor 10 is mounted, rotatable around the axis A. An internal end portion 11 of the rotor 10 projects to the interior of the notch 2 and is engaged in the first part of smaller diameter of the orifice 8 of the cylindrical collar 7 to form a half-axis of rotation of the bit 6. A first circlip 12a is mounted in a peripheral groove of the internal end part 11, between the stator 3a and the bit 6, for axially retaining the rotor 10 in the bore 4a. The barrel rotor 10 mounted in the external stator 3a is of conventional design. It includes a key housing 13 open at the external axial end of the rotor 10 for inserting an associated key. Several keyways are provided between the rotor 10 and the stator 3a so as to form a combination which will only allow rotation of the rotor 10 when the appropriate key has been inserted. These keyways are produced by movable stator pins 14, which are each associated with a movable rotor pin 15. The rotor pins 15 are radially movable in housings

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r stator 14 sont repoussées vers le rotor 10 par des ressorts 18 disposés au fond des logements 17. Lorsque le rotor 10 est en position clavetée, les logements 17 sont alignés avec les logements 54 et les goupilles de stator 14 s'engagent partiellement dans ces derniers en repoussant les goupilles de rotor 15 de manière à réaliser les clavetages qui immobilisent en rotation le rotor 10. La clé comporte sur son chant inférieur un profil géométrique (dents taillées) conçu pour repousser les goupilles de stator 14 par l'intermédiaire des goupilles de rotor 15 à l'encontre des ressorts 18 jusqu'à ce que la surface de contact 19 entre les têtes des goupilles de rotor 15 et de stator 14 associées soit alignée sur la surface cylindrique extérieure du rotor 10, de manière à permettre la rotation du rotor 10 dans le stator 3a. 16 opening, on the one hand, to the external surface of the rotor 10, on the other hand, in the key housing 13. The stator pins 14 are housed in radial housings 17 opening in the bore 4a. The pins of

r stator 14 are pushed towards the rotor 10 by springs 18 arranged at the bottom of the housings 17. When the rotor 10 is in the keyed position, the housings 17 are aligned with the housings 54 and the stator pins 14 partially engage in these the latter by pushing the rotor pins 15 so as to make the keyways which immobilize the rotor 10 in rotation. The key has on its lower edge a geometric profile (cut teeth) designed to push the stator pins 14 by means of the pins rotor 15 against the springs 18 until the contact surface 19 between the heads of the associated rotor 15 and stator pins 14 is aligned with the outer cylindrical surface of the rotor 10, so as to allow rotation of the rotor 10 in the stator 3a.

 In the bore 4b of the second stator 3b, oriented towards the interior face 5a of the door on which the gasket G is mounted, a fauxrotor 20 is mounted, rotating around the axis A. The faux-rotor 20, generally cylindrical , comprises a body 20a of external diameter substantially equal to the diameter of the bore 4b of the stator, having a cylindrical axial bore 21 opening onto the internal end 22 of the false-rotor. With particular reference to FIG. 2, the dummy rotor 20 has a transverse wall 23, in the form of a disc, which forms the bottom of the bore 21. The internal end 22 of the dummy rotor, which is opposite to the transverse wall, protrudes inside the notch 2 and is engaged in the second orifice part 8 of the cylindrical collar 7, in abutment against the aforementioned shoulder of the bit, to form another half-axis of rotation of the bit 6. Two axial grooves 24 are formed in the wall of the body 20a, at two diametrically opposite positions, to receive two corresponding axial ribs 69 (visible as indicated in dotted lines) carried by the bit 6, in order to achieve a mechanical connection in rotation. between the false-rotor 20 and the bit 6. The axial ribs project radially inwards from the second orifice part of the cylindrical collar 7. The axial grooves 24 are open at the internal end 22 of the false-r otor 20 to allow the mounting of the false rotor 20 in the cylindrical collar 7. A second circlip

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 12b is mounted in a peripheral groove 25 of the internal end part 22, between the stator 3b and the bit 6, for axially retaining the false rotor 20 in the bore 4b. The bit 6 is thus positioned axially between the two circlips 12a and 12b.

 The transverse wall 23 carries on its outer face 23a opposite the bore 21 a rod 26, of square section, centered along the axis A, which projects outside the stator block 1 and intended to fit into a female part of the operating button, as described below.

The outer face 23a of the transverse wall 23 is substantially aligned with the end face 5b of the stator block 1.

 The mechanical connection between the rotor 10 and the bit 6 is made by means of a drive ring 27 and a rotor drive 31. The drive ring 27, generally cylindrical with an outside diameter substantially equal to the diameter inside the axial bore 21 of the false-rotor 20, has a first end part engaged in the bore 21, and a second end part engaged in the cylindrical collar 7 of the bit 6. The first part of the ring 27 carries two pins 28 projecting radially at two diametrically opposite positions and engaged in the grooves 24 of the false-rotor 20. The radial pins 28 provide the mechanical connection in rotation of the false-rotor 20 with the drive ring 27. A first compression spring 29 is inserted into the bore 21 of the false rotor 20 with one end against the transverse wall 23 and one end against the end face of the first part of the ring 27, for s axially apply the ring 27 with the pins 28 abutting in the grooves 24 against the end of the above-mentioned axial ribs of the bit 6.

The internal bore 30 of the drive ring 27 has two parts of different diameters, separated by a shoulder 30a oriented towards the barrel rotor.

 The rotor driver 31 is inserted into the barrel rotor 10 and the drive ring 27, through the bit 6, to make the coupling and uncoupling between the barrel rotor 10 and the bit 6 depending on the presence or absence of an appropriate key in the rotor. The rotor drive 31 comprises a generally cylindrical body comprising a first part 32 engaged in an internal housing 33 of the rotor 10 which opens at its end

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 internal 11 and communicates with the key housing, and a second part 34 having a diameter less than the first part 32, thus forming a shoulder 40 between the two parts 32,34, and substantially equal to the diameter of the part of smaller diameter of the bore 30 of the drive ring, this second part being engaged inside the drive ring 27. The first part 32 of the rotor driver 31 has two axial ribs 35 and 36 which project radially outward at two diametrically opposite locations of the rotor driver 31 and are engaged in two corresponding axial rectangular grooves 37 and 38 formed in the wall of the rotor 10 inside the internal housing 33, to make the mechanical connection in rotation between the rotor 10 and the rotor driver 31. The first rib 35 has a substantially rectangular uniform cross section. The second rib 36 has a substantially rectangular cross section in two parts, with, from the end of the rotor driver 31, a first part similar to the first rib 35 and a second part of width substantially half less, the two parts being connected by an inclined profile (not shown). Thus, in the plane perpendicular to its direction of radial projection, the second rib 36 has a profile substantially in T.

The rotor driver 31 is axially movable between, on the one hand, a passive position, which it occupies when there is no key in the housing 13, and in which it is not linked in rotation with the drive ring 27 and, on the other hand, an active position, which it occupies when a suitable key is inserted in the housing 11, and in which it realizes the connection in rotation between the rotor 10 and the ring drive 27. A second compression spring 39 is threaded on the second part 34 of the rotor driver 31, a first end of the second spring 39 being in abutment against the shoulder 30a of the bore 30 of the ring d drive 27 and a second end in abutment against the shoulder 40 of the rotor drive 31, in order to push the rotor drive 31 to its passive position in the absence of a key in the housing 11. The drive rotor 31 in the passive position abuts against the bottom 41 of the internal housing 33 of the ro tor 10.

 The lining G of the system according to the invention comprises a substantially flat plate 50, for example rectangular, the face of which

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 interior 50a, oriented towards the internal face 5 of the door 51, is provided with a peripheral rim 52 whose free edge 53 bears against the internal face 51 a of the door when the lining is mounted on said door. The interior trim G can be assembled on the door in different ways. For example, an exterior trim 54, similar to the interior trim, is disposed on the exterior face 5 lb of the door and the two linings are assembled to one another on the door. The internal face of the plate of the external lining 54 carries protruding screw wells inserted into holes passing through the door, and assembly screws passing through two holes of the internal lining G are screwed into the screw wells. The plate of the external trim 54 has an opening 54a making accessible from the outside a part of the end face 5b of the stator block, or the whole of this as illustrated in FIG. 1, to allow the insertion of 'an associated key in the rotor 10. Depending on the lock associated with the system according to the invention, the linings may each carry a lever for actuating the latch bolt turn of a lock. The plate 50 of the interior trim comprises a cylindrical opening 55 in which the actuator button B is mounted.

 The operating button B comprises a gripping part 56, cylindrical and substantially full, and a mounting part 57 in the form of a cylindrical ring of smaller diameter extending axially from the gripping part 56 and having an internal housing 59 of square section open at the free end 58 of the ring opposite the gripping part 56. The mounting part 57 is inserted into the opening 55 of the plate 50 and the button B is retained axially on the plate 50 by means a tubular circlip 60, of internal diameter substantially equal to the external diameter of the cylindrical ring 57. The internal wall of the circlip 60 has an annular rib 61 projecting inwardly, near a first end 60a of the circlip, engaged in a peripheral groove 62 of the free end portion 58 of the ring, the second end 60b of the circlip being in abutment against the internal face 50a of the plate. An annular seal 64 is disposed between the external face 50b of the plate and the shoulder 65 separating the gripping part 56 and the mounting part 57 of the button B.

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 The external cylindrical wall of the ring 57 provided with the housing 59, forms a female part, in which the male part of the false-rotor 20 constituted by the rod 26 of square section (or other non-circular section) is inserted, to ensure the connection mechanical between the operating button B and the false rotor 20. When the safety cylinder C is inserted into a through housing 66 of the door 51 and assembled with a lock, in a known manner by means of the transverse bore 67 of the cylinder , the gasket G is assembled on the door so that the longitudinal axis of the button B is substantially aligned with the axis A of the cylinder. In the present embodiment, the end face 5b of the stator block is set back in the through housing 66 of the door 51 relative to the internal face 5 la of the door and the free end part 58 of the ring penetrates in said accommodation. The rod 26 is partially fitted into the housing 59. By way of example, the male rod 26 and the complementary housing 59 have a square section, substantially equal, of 6 millimeters on a side.

 The rod 26 of the dummy rotor thus fitted into the housing of the operating button B ensures the mechanical connection in rotation of the button B with the dummy rotor 20. A rotation of the button B, by gripping the grip part accessible from the outside , allows to actuate the bit 6 which is linked in rotation with the false-rotor.

 Furthermore, when a suitable key is inserted in the housing 11, its end projects into the internal housing 33 and pushes the rotor driver 31 towards the internal stator 3b. The ribs 35 and 36 of the rotor driver 31 then engage in two corresponding axial notches 42 and 43 of the drive ring 27. The notches 42 and 43, open on the end face of the ring drive 27 oriented towards the rotor driver 31, have different widths, substantially equal to the width of the first rib 35 and to the width of the second part 36b of the second rib 36 respectively. The rotational connection between the rotor driver 31 and the ring 27 can only be achieved at a predetermined relative angular position of these two members. The safety cylinder is designed so that this predetermined position is that occupied by the rotor driver 31 and the drive ring 27 when the rotor is in the keyed position and the bit 6 is in the open lock position. If this

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 predetermined position is not that occupied by the rotor driver 31 and the drive ring 27 when the key is inserted into the rotor 10, for example because the operating button B has been turned to lock the lock, the ribs 35 and 36 are not opposite the corresponding notches 42 and 43, so that they abut against the end face of the drive ring 27 and push it back into the bore 21 of the false-rotor 20 against the second compression spring 39. When the key is then turned, the rotor drive 31 then turns at the same time as the rotor 10 without acting on the ring 27, until it is found in the predetermined angular position. Arriving at this position, the ring 27 automatically returns to its initial axial position under the action of the spring 39, the notches 42 and 43 engaging on the ribs 35 and 36.

e présent être effectuée en référence à la figure 3. Seuls les éléments qui diffèrent du premier mode de réalisation vont être décrits ici. Dans ce mode de réalisation, l'entraîneur de rotor 131 comporte un corps globalement cylindrique en trois parties : une première partie 135 et une deuxième partie 136, telles que définies précédemment, et une troisième partie 100, s'étendant axialement à partir de la deuxième partie 136, de plus petit diamètre que cette dernière, qui fait saillie depuis la bague d'entraînement 127 vers l'intérieur de l'alésage 21 du faux-rotor 20. Le corps d'entraîneur de rotor présente un épaulement 101 entre ses deuxième et troisième parties 136 et 100. La bague d'entraînement 127 présente quant à elle un alésage intérieur 130 de diamètre uniforme continu, sans épaulement. Le deuxième ressort 39 de compression du premier mode de réalisation est remplacé par un deuxième ressort 139 positionné à l'intérieur du premier ressort 29 et enfilé sur la troisième partie 100 de l'entraîneur de rotor 131. Une première extrémité du deuxième ressort 139 est en appui contre la paroi transversale 23 du faux-rotor 20 et une seconde extrémité en appui contre l'épaulement 101 de l'entraîneur de rotor 131, afin de repousser l'entraîneur de rotor 131 à sa position passive. Afin d'assurer la stabilité de ce deuxième ressort 139 de plus petit diamètre que le premier ressort 29, la paroi transversale 123 du faux-rotor 20 comprend un alésage 102 non débouchant, de diamètre sensiblement égal à celui de la troisième partie 100 de l'entraîneur de A description of a second embodiment goes to

This will now be done with reference to FIG. 3. Only the elements which differ from the first embodiment will be described here. In this embodiment, the rotor driver 131 comprises a generally cylindrical body in three parts: a first part 135 and a second part 136, as defined above, and a third part 100, extending axially from the second part 136, of smaller diameter than the latter, which projects from the drive ring 127 towards the inside of the bore 21 of the false-rotor 20. The rotor drive body has a shoulder 101 between its second and third parts 136 and 100. The drive ring 127 has an internal bore 130 of continuous uniform diameter, without shoulder. The second compression spring 39 of the first embodiment is replaced by a second spring 139 positioned inside the first spring 29 and threaded on the third part 100 of the rotor driver 131. A first end of the second spring 139 is bearing against the transverse wall 23 of the false-rotor 20 and a second end bearing against the shoulder 101 of the rotor driver 131, in order to push the rotor driver 131 back to its passive position. In order to ensure the stability of this second spring 139 of smaller diameter than the first spring 29, the transverse wall 123 of the false-rotor 20 comprises a bore 102 which does not open out, of diameter substantially equal to that of the third part 100 of the coach

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 rotor, into which the first end of the second spring is inserted. This bore is centered along the axis A and can extend into the male part 26 of the false-rotor 20, constituted by the rod of square section and able to cooperate by interlocking with the housing 59 of the female part 57 of the button.

 FIG. 4 illustrates a third embodiment, which differs from the first embodiment in that the transverse wall 223 of the false rotor 220 does not carry a projecting rod, but is provided with a through opening 200, said wall provided of the opening constituting a female part which cooperates with a corresponding male part of the operating button B. The operating button B comprises a gripping part 56, cylindrical and substantially full, as defined in the first embodiment, a part mounting 257, cylindrical and substantially full, of smaller diameter than the gripping part, extending axially from the latter, and a male part 201 formed of a rod, of square section, extending axially from of the mounting part 257. The button B is retained axially on the plate 50 in a similar manner to that described in the first embodiment, by means of a tubular circlip 60 e of which an annular rib 61 is engaged in a peripheral groove 262 of the cylindrical mounting part, and an annular seal 64 disposed between the external face 50b of the plate and the shoulder 65 separating the gripping part 56 and the part 257 mounting button. The safety cylinder C is mounted longitudinally in a through housing 66 of the door 51, then fixed to a lock. When the exterior trim G is then assembled on the door, the rod 201 is inserted into the opening 200, and the free end 20 1a of the rod is aligned with the internal face of the transverse wall 223 or may protrude slightly in the bore 221 of the false rotor 220.

 According to an embodiment not illustrated, a system corresponding to a combination of the second and third embodiment may be provided in which the false rotor has a female part which cooperates with a male part of the button as in the third embodiment. realization and a trainer in three parts and a ring as in the second mode. In this case, the end of the

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 second spring for pushing the rotor driver back to its passive position in the absence of a key bears against the free end of the male rod of the button inserted in the opening of the transverse wall. To maintain the second spring, the other end of the spring is tightly mounted on the third part of the rotor driver.

 FIG. 5 illustrates a fourth embodiment, in which the button and the false-rotor are disengageably rotated to give the possibility to a holder of an appropriate key to actuate the safety cylinder as desired, independently of the any forces exerted on the operating button from the other side of the door. In this embodiment, the system according to the invention comprises an operating button B similar to that described in the first embodiment, and a safety cylinder C comprising a rotor drive in three parts and a ring as described in the second embodiment.

e 301, 302 sont séparés par un épaulement, par exemple de forme conique. The false rotor 320 has a transverse wall 323, the external face of which carries a cylindrical external end portion 300, of smaller diameter than the body 320a of the false rotor and penetrating into the housing 359 of the ring 357. The part d the external end 300 comprises an axial bore 301 opening onto an axial bore 302 of the transverse wall 323, of diameter substantially double from the preceding one and which opens onto the axial bore 321 of the false-rotor. The two bores

e 301, 302 are separated by a shoulder, for example of conical shape.

A disengageable transmission member, in the form of a button drive 303, is arranged between the false-rotor 320 and the operating button B to link the latter disengageably in rotation. The button driver 303 comprises a cylindrical release rod 304, engaged in the bore 301 of the end portion 300 and substantially of the same diameter as the latter. Outside the outer end part 300, the release rod 304 is terminated by a male part 305 of square cross section, substantially equal to that of the housing 359 of the female part of the button B, in which said male part is inserted. The male part 305 carries a first dog clutch means (not shown) in the form for example of a lug projecting axially with respect to the external face of the male part which is oriented towards the free end

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1 r d'une encoche axiale ménagée dans la surface extérieure de la partie d'extrémité 300 du corps 320a du faux-rotor 320. L'entraîneur de bouton 303 est mobile axialement entre, d'une part, une position embrayée, dans laquelle l'ergot est engagé dans l'encoche axiale pour réaliser une liaison mécanique en rotation entre l'entraîneur de bouton 303 et le faux-rotor 320, et, d'autre part, une position débrayée, dans laquelle l'ergot est complètement sorti de l'encoche pour désolidariser l'entraîneur de bouton 303 du faux-rotor 320 en rotation autour de l'axe A. 304a of the declutching rod 304. The false-rotor 320 carries a second clutch means complementary to said first means, in the form

1 r of an axial notch formed in the outer surface of the end portion 300 of the body 320a of the false rotor 320. The button drive 303 is axially movable between, on the one hand, a engaged position, in which the lug is engaged in the axial notch to make a mechanical connection in rotation between the button driver 303 and the false-rotor 320, and, on the other hand, a disengaged position, in which the lug is completely extended of the notch to separate the button driver 303 from the false rotor 320 in rotation about the axis A.

 A third compression spring 306, inserted in the housing 359 of the ring 357 between the male part 305 of the button driver 303 and the bottom 359a of the housing, exerts on the button driver an elastic return force towards its position engaged. The housing 359 is deeper than the housing 59 of the ring 57 of the first and second embodiments in order to allow the positioning of the third spring 306 and the translational movement of the button driver towards its disengaged position. The rotor drive 131 comprises a generally cylindrical body in three parts, as described previously in the second embodiment, the third part 100 cooperating with the declutching rod 304 of the button drive 303. The second compression spring 139 is threaded on the declutching rod 304 inside the first spring 29 and on the third part 100 of the rotor driver 131, a first end of the third spring 306 being in abutment against the conical shoulder connecting the bores 301 and 302 and a second end bearing against the shoulder 101 of the rotor driver 131, in order to push the rotor driver 131 back to its passive position in the absence of a key in the rotor housing.

 At rest, as visible in FIG. 5, the safety cylinder C has the rotor driver 131 in the passive position and the button driver 303 in the engaged position. The safety cylinder can then be actuated by means of the button B which is linked in rotation to the false-rotor 320 by means of the male part 305 engaged in the housing 359 constituting the female part of the button B, the lug of the male part being engaged in the notch of the external end part

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 300 of the false rotor. When the key is inserted into the key housing, the rotor driver 131 is pushed into the active position against the first spring 29, and the end of its third part 100 comes into frontal contact with the free end 304a of the declutching rod 304 of the button driver 303, so as to push said button driver to its disengaged position, by compressing the spring 306. The displacement of the rotor driver 131 in the active position therefore jointly produces the mechanical coupling in rotation between the rotor 10 and the bit 6, which makes it possible to maneuver said bit 6 using the key, and the mechanical uncoupling in rotation between the false rotor 320 and the button driver 303, this which makes button B inactive with bit 6.

 Of course, this variant with a disengageable button also applies to the embodiment illustrated in FIG. 4, that is to say with a button provided with a male part.

 Although the invention has been described in connection with different particular embodiments, it is obvious that it is in no way limited thereto and that it includes all the technical equivalents of the means described as well as their combinations if these fall within the scope of the invention.

Claims (13)

CLAIMS P-L. SELLS 1. System for an opening lock comprising a gasket (G), intended to be fixed on one of the faces (51a) of the opening (51), and an operating button (B) mounted so as to be able to rotate on the gasket, said operating button comprising a gripping part (56) intended to be grasped by a user to operate said button, a mounting part allowing its mounting through said packing, and an actuating part intended to actuate means of locking a lock mounted in said opening, characterized in that said system comprises a safety cylinder (C) comprising: a double stator block (1) intended to be mounted longitudinally through the opening and comprising a central notch (2), said stator block (1) defining on either side of said notch (2) two stators (3a, 3b), each stator being pierced with a bore (4a, 4b) substantially cylindrical longitudinal, each through bore, from a art, by an internal end, in said notch (2) and, on the other hand, by an external end, on a longitudinal end face (5a, 5b) of said stator block (1); - A bit (6), intended to cooperate with said means for locking the lock, mounted in said notch (2) and movable in rotation about a longitudinal geometric axis (A) of said blocstator (1); a barrel rotor (10) arranged coaxially with said bit (6) in a first (3a) of said stators, for operating the latter using an associated key, said barrel rotor (10) comprising a key housing ( 11) intended to receive the body of said associated key; a first, disengageable means of transmission (31, 131), able to mechanically link said barrel rotor (10) in rotation with said bit (6); and a second transmission means (20,220, 303) arranged in the second (3a) of said stators, comprising at the external end of said second stator a drive part (26,223, 305), capable of cooperating with the actuation part (57,201, 357) of the button <Desc / Clms Page number 19>  maneuver (B) for mechanically linking in rotation the operating button with said bit (6).  2. System according to claim 1, characterized in that the second transmission means (303) is movable in translation relative to said stator block (1) between, on the one hand, a engaged position, which it occupies in the absence of the key in said barrel rotor (10) and in which its drive part (305) is directly or indirectly, mechanically linked in rotation with said bit (6) and, on the other hand, a disengaged position in which its drive part is free to rotate relative to said bit (6), said first transmission means (131) being moved to its engaged position by means of said key when the latter is inserted in said key housing ( 13), said first transmission means (131) in its engaged position cooperating with said second transmission means (303) to move the latter to its disengaged position, so that said operating button (B) is then inoperative vis-à-vis -vis said bit (6).  3. System according to claim 1 or 2, characterized in that the drive part of the second transmission means (20, 303) comprises a male part (26,305), of non-circular cross section, which protrudes out of the the bore (4b) of the second stator (3b), the actuating part of the operating button (B) comprising a female part (57,357) provided with a housing (59,359) of cross section complementary to that of the projecting male part, so that the male drive part is able to cooperate by interlocking with said female actuating part (57, 357) of the operating button (B) to mechanically link the operating button in rotation with said bit (6).  4. System according to claim 1 or 2, characterized in that the drive part of the second transmission means (220) comprises a female part (223) provided with a housing (200), of non-circular cross section, the actuating part of the operating button (B) comprising a male part (201) of cross section complementary to that of said housing, so that the female driving part is able to cooperate by interlocking with the male actuating part of the operating button (B) to link <Desc / Clms Page number 20>  mechanically rotating the operating button with said bit (6).  5. System according to one of claims 2 to 4, characterized in that the second transmission means (303) comprises a declutching rod (304) carrying said actuating part (305) and intended to be pushed back by its free end (304a) oriented towards said barrel rotor (10) towards its engaged position by said first transmission means (131) against an elastic return means (306) in the direction of its engaged position, said system comprising a generally cylindrical fauxrotor (15), arranged coaxially with said bit (6) in the bore (4b) of said internal stator (3b), integral in rotation with the bit (6) by a first internal end part and having at its other external end a transverse wall (323) provided with a bore (301,302), in which is inserted said declutching rod (304) to guide the latter in translation, and the actuation part (305) carrying a first means dog clutch fit engage with a second clutch means complementary to said first clutch means, carried by the transverse wall (323) of the false rotor, in the engaged position of the declutching rod (304) and to disengage from said second means dog clutch in the disengaged position of the declutching rod.  6. System according to claim 5 taken in combination with claim 3 or 4, characterized in that said elastic return means (306) is disposed in the aforementioned housing (359) between said male and female parts to exert on the rod clutch (304) a return force towards its engaged position.  7. System according to claim 3 or 4, characterized in that the second transmission means comprises a false-rotor (20, 220) generally cylindrical, arranged coaxially with said bit (6) in the bore (4b) of said internal stator (3b), integral in rotation with the bit by a first internal end part and having at its other external end a transverse wall (23, 223), said transverse wall carrying a projecting rod (26) forming said male actuating part or being provided with said housing (200) forming said female actuating part. <Desc / Clms Page number 21>

8. System according to one of claims 5 to 7 taken in combination with claim 3, characterized in that the mounting part and the female part of the operating button are formed by a ring (57, 357) generally cylindrical provided a housing (59, 359) for fitting the male drive part of the second transmission means. 9. System according to claims 4 and 7 taken in combination, characterized in that the projecting rod (201) forming the male actuating part of the operating button (B) extends from a cylindrical part (257 ) substantially full forming the mounting part of said operating button. 10. System according to claim 8 or 9, characterized in that the lining (G) comprises a plate (50) intended to be disposed parallel to the faces (51a, 51b) of the opening (51), said plate comprising a through opening (55) into which the mounting part is inserted (57, 257, 357), at least one circlip (60) being engaged elastically in a peripheral annular groove (62) formed on the outside of said part of mounting for retaining axially, with rotational mobility, said operating button (B) on the packing plate. 11. System according to one of the preceding claims, characterized in that it comprises a second lining (54), intended to be fixed on the other face (51b) of the opening (51), and provided with an opening (54a) intended to allow the insertion of an associated key into the key housing (11) of the rotor (10), one of the two linings (G, 54) carrying protruding screw holes intended to be inserted into holes passing through the opening to allow the assembly of the two linings to one another on the opening by means of assembly screws, passing through two holes of the other lining and screwed into said wells screwing. 12. Safety cylinder (C) for the door lock system according to one of claims 1 to 7, characterized in that it comprises a double stator block (1) intended to be mounted longitudinally through the opening and comprising a central notch (2), said stator block (1) defining on either side of said notch (2) <Desc / Clms Page number 22>  two stators (3a, 3b), each stator being pierced with a bore (4a, 4b) substantially cylindrical longitudinal, each bore opening, on the one hand, by an internal end, into said notch (2) and, on the other part, by an external end, on a longitudinal end face (5a, 5b) of said stator block (1); a bit (6), intended to cooperate with said means for locking the lock, mounted in said notch (2) and movable in rotation about a longitudinal geometric axis (A) of said blocstator (1); a barrel rotor (10) arranged coaxially with said bit (6) in a first (3a) of said stators, for operating the latter using an associated key, said barrel rotor (10) comprising a key housing ( 11) intended to receive the body of said associated key; a first transmission means, disengageable (31, 131), capable of mechanically linking in rotation said barrel rotor (10) with said bit (6); and - a second transmission means (20,220, 303) arranged in the second (3a) of said stators, comprising at the external end of said second stator a drive part (26,223, 305) intended to cooperate with the actuation part (57,201, 357) of an operating button (B) mounted mobile in rotation on a gasket (G) opening to mechanically link in rotation the operating button with said bit (6).  13. Door lock comprising the system according to one of claims 1 to 11 and locking means capable of cooperating with the bit (6) of said system.