MODULAR CYLINDER LOCK

Description

[0001] The present invention refers to a modular cylinder lock.

[0002] In this type of cylinder lock, the stator body is made up of two structurally independent modules joined by a connection bar.

[0003] Each module of the stator body comprises a primary cylindrical channel for housing one end of the connection bar and a series of secondary channels that lead into the primary channel.

[0004] Coding elements are located in the secondary channels and they are provided to cooperate with a rotor body so as to stop the rotation thereof when the key is removed from a special slot in the rotor body and to enable the rotation thereof when the key is inserted in this slot.

[0005] Assembly of the coding elements in the secondary channels can be carried out from the inside or the outside of the stator body.

[0006] In the first case, the coding elements are assembled before the rotor body. The coding elements are inserted from the cylindrical seat for housing the rotor body and slid into the secondary channels, the end of which connecting with the primary channel is suitably plugged by the connection bar.

[0007] In the second case, the coding elements are assembled after the rotor body. There is comprised a series of tertiary channels diametrically opposed to and aligned with the secondary channels with respect to the primary channel. The tertiary channels lead into the primary channel on one side and on the other side, the base of the external surface of the stator body. The coding elements are inserted from the tertiary channels and guided so as to slide into the secondary channels prior to insertion of the connection bar into the primary channel.

[0008] As is known, the coding elements comprise a coded pin that is movable in contrast to and by action of a helical spring.

[0009] The complication characterizing the system for assembly from the outside consists in the fact that the springs must prove to have been compression loaded when they are inserted in the secondary channels.

[0010] This is carried out by advancing a bushing into the seat for housing the connection bar, prior to engagement of the connection bar, said bushing being a bushing for plugging the holes connecting the primary channel to the secondary channels. The connection bar is subsequently engaged in the bushing.

[0011] Various design solutions have been proposed for the bushing, based on the system provided for its advancement in the seat for housing the connection bar.

[0012] The drawback common to all the solutions on the market lies in the fact that the bushing is advanced stepwise and stopped at each hole so as to enable insertion of the coding elements and retention of the compression-loaded springs therein, before the hole is plugged.

[0013] The system for assembly from the outside therefore involves a process that is quite long and complex.

[0014] EP 2 628 874 A2 describes a lock cylinder which has two housing portions which are interconnected with variable spacing by an elongated coupling element.

[0015] The technical task of the present invention is therefore to realize a cylinder lock with a modular stator body that makes it possible to eliminate the cited technical cylinder lock with a modular stator body which has a simple and rapid system for assembly of the coding elements from the outside.

[0016] Another aim of the invention is to realize a cylinder lock with a modular stator body which can be assembled in the installation site, adapting it to the specific application at hand.

[0017] Another aim of the invention is to realize a cylinder lock with a modular stator body featuring a length and coding elements that can be customized as desired. Another aim of the invention is to realize a cylinder lock with a modular stator body which simplifies logistics for the manufacturer as regards warehousing and transportation of the components.

[0018] The technical task, as well as the latter and other aims, according to the present invention, are achieved by realizing a modular cylinder lock comprising at least one stator module comprising a seat for housing a rotor, a primary channel for housing a connecting bar of the modular cylinder lock and a series of secondary channels that have homologous ends connecting with respective first access holes of the primary channel, there also being comprised coding elements inserted inside the secondary channels and a cylindrical bushing for plugging said first access holes, said bushing being inserted inside the primary channel, characterized in that said bushing has one or more gaps in the material that are suitably arranged and configured for the assembly thereof in the primary channel following the positioning of the coding elements in the secondary channels, said gaps in the material comprising a slit that extends for the entire extension of an axial generatrix of the bushing, and a notch on the edge of the end of the bushing for insertion in the primary channel, said notch being in a position that is diametrically opposed to said slit and being of a width that is smaller than the diameter of said first access holes.

[0019] In a preferred embodiment of the invention, said bushing is made up of a sheet of resilient metallic material.

[0020] In a preferred embodiment of the invention, said bushing has means for disassembly from the primary channel.

[0021] In a preferred embodiment of the invention, said disassembly means comprises a resilient coupling tooth that radially projects outwards from the bushing and is housed in a coupling housing.

[0022] In a preferred embodiment of the invention, said coupling tooth is made up of a portion of said bushing cut along an open line and bent.

[0023] In a preferred embodiment of the invention, said coupling tooth is positioned along the axial generatrix of the bushing in which said notch is found.

[0024] In a preferred embodiment of the invention, said coupling tooth is positioned at the end of the bushing opposite the end for insertion in the primary channel.

[0025] In a preferred embodiment of the invention, said coupling housing comprises a groove along an arc of the circumference of the internal perimeter of the primary channel.

[0026] In a preferred embodiment of the invention, said groove is of a depth that gradually increases from a null value.

[0027] In a preferred embodiment of the invention, said disassembly means further comprises at least two notches for gripping the bushing and fashioned along longitudinal edges of the slit.

[0028] In a preferred embodiment of the invention, said gripping notches are at the same distance from the ends of the bushing.

[0029] In a preferred embodiment of the invention, said bushing has through holes for fastening pins for securing the connection bar to the module.

[0030] In a preferred embodiment of the invention, said module comprises a series of parallel tertiary channels that have homologous ends connecting with respective second access holes of the primary channel, said bushing having said slit overlying said series of tertiary channels.

[0031] The present invention also discloses a cylindrical bushing that is insertable in a primary channel of a modular stator body of a modular cylinder lock according to claim 1 for plugging access holes with access to secondary channels housing coding elements, characterized in that it has a slit extending for the entire extension of an axial generatrix thereof, and a notch on the edge of the end for insertion in the primary channel, said notch being in a position that is diametrically opposed to said slit and being of a width that is smaller than the diameter of said access holes.

[0032] Further characteristics and advantages of the invention will become more apparent from the description of a preferred, but not exclusive, embodiment of the cylinder lock according to the invention, and which is illustrated by way of approximate and non-limiting example in the attached drawings, of which:

Figure 1 is a front view of the lock;

Figure 2 is a side elevation of the lock sectioned in a centre plane along line 2-2 of Figure 1;

Figure 3 is a detail from Figure 2;

Figures 4 to 8 are various axonometric views of the bushing;

Figure 9 shows the device for assembly of the coding elements, in a disassembled state;

Figures 10 and 11 show two operational sequences of the assembly device.

[0033] With reference to the figures, a modular cylinder lock is shown and generally indicated by reference number "1".

[0034] The lock 1 comprises a longitudinal stator body made up of two stator modules 3, each having a cylindrical seat 4 for housing a respective rotor 2.

[0035] The seats 4 for housing the rotors 2 extend along a longitudinal axis parallel to the longitudinal direction L of the stator body.

[0036] Each rotor 2 is provided with a slot 5 for insertion of a key 6 for actuating a control cam 7 controlling a bolt of the lock 1.

[0037] The two stator modules 3 are structurally independent and they are joined by a connection bar 8 with possible interposition of suitable extensions 9 provided to adapt the axial length of the stator body to the specific installation at hand.

[0038] The connection bar 8 has cylindrical ends 8a and a central enlargement 8b.

[0039] Each stator module 3 comprises a primary cylindrical channel 10 for housing one end 8a of the connection bar 8, a series of secondary channels 11 and a series of tertiary channels 12.

[0040] The primary channel 10 extends parallel to the longitudinal axis L of the stator body and it has one open end 15 for insertion of the homologous end 8a of the connection bar 8, whereas the opposite end 16 of the primary channel 10 is closed. The secondary channels 11 are parallel to each other and coplanar and they are arranged perpendicularly to the longitudinal axis L of the stator body.

[0041] The secondary channels 11 have homologous ends connecting with respective first access holes 13 of the primary channel 10 that are aligned along a first axial generatrix G of the primary channel 10.

[0042] The tertiary channels 12 are parallel to each other and coplanar and they are arranged perpendicularly to the longitudinal axis L of the lock 1.

[0043] The tertiary channels 12 have homologous ends connecting with respective second access holes 14 of the primary channel 10 that are aligned along a second axial generatrix H of the primary channel 10, said axial generatrix H being diametrically opposed to the first axial generatrix G of the primary channel 10.

[0044] Each rotor 2 has parallel and coplanar radial channels 17, which on one side connect with the slot 5 for the key 6 and on the other side, open onto the seat 4 for housing the rotor 2, into which the secondary channels 11 of the stator module 3 lead.

[0045] Each channel 17 afforded in the rotor 2 is coplanar with a corresponding secondary channel 11 of the stator module 3, to which it can be joined as a result of rotation of the rotor 2.

[0046] Coding elements 18, 19, 20 are positioned inside the secondary channels 11 of the stator module 3 and inside the radial channels 17 of the rotor 2.

[0047] The coding elements 18, 19, 20 comprise a compression-loaded helical spring 18 and a neutral pin 19, both positioned entirely within each secondary channel 11 of the stator module 3, and a coded pin 20 that is movable in contrast to and by action of a helical spring 18 between a position for stopping rotation of the rotor 2 in which it is arranged in between a secondary channel 11 of the stator module 3 and the corresponding radial channel 17 of the rotor 2 when the key 6 is not inserted in the slot 5, and a position for enabling rotation of the rotor 2 in which it is arranged entirely within the radial channel 17 of the rotor 2 so as to enable rotation of the rotor 2 when the key 6 is inserted in the slot 5.

[0048] A cylindrical bushing 21 for plugging the first access holes 13 is positioned inside the primary channel 10.

[0049] The bushing 21 is fitted on one end 8a of the connection bar 8.

[0050] In particular, the bushing 21 is externally mated to the primary channel 10 and internally mated to one end 8a of the connection bar 8.

[0051] Advantageously, the bushing 21 has one or more suitable gaps in the material, for its assembly in the primary channel 10 following the positioning of the coding elements 18, 19, 20 in the secondary channels 11.

[0052] More specifically, these gaps in the material comprise a slit 22 that extends for the entire extension of an axial generatrix of the bushing 21, and a notch 23 on the edge of the end 21a of the bushing 21 for insertion in the primary channel 10.

[0053] The slit 22 overlies the tertiary channels 12.

[0054] The notch 23 is found in a position that is diametrically opposed to the slit 22 and it is of a width that is smaller than the diameter of the first access holes 13.

[0055] The bushing 21 is made up of a sheet of resilient metallic material. In this manner, it can be easily shaped from a flat sheet and once it has been shaped, it is perfectly adaptable to the hollow space between the end 8a of the connection bar 8 and the primary channel 10.

[0056] The bushing 21 also has means for disassembly from the primary channel 10.

[0057] The disassembly means comprises a resilient coupling tooth 24 that radially projects outwards from the bushing 21 and is housed in a coupling housing.

[0058] The coupling tooth 24 is made up of a portion of the bushing 21 cut along an open line and bent, for example a V-shaped line.

[0059] The coupling tooth 24 is positioned along the same axial generatrix of the bushing 21 in which the notch 23 is found and at the end 21b of the bushing 21 opposite the end for insertion in the primary channel 10.

[0060] The coupling housing comprises a groove 25 along an arc of the circumference of the internal perimeter of the primary channel.

[0061] The groove 25 is of a depth that gradually increases from a null value to a maximum value.

[0062] The disassembly means further comprises at least two notches 26 for gripping the bushing 21 and fashioned along longitudinal edges 22a, 22b of the slit 22.

[0063] The gripping notches 26 are at the same distance from the ends of the bushing 21. Lastly, the bushing 21 has the through holes 27 in which fastening pins 28 are inserted for securing the connection bar 8 to the stator module 3.

[0064] For assembly of the lock, a specific device is provided for loading the coding elements 18, 19, 20 from the outside.

[0065] The loading device comprises a support block 30 with a fixed orientation for the stator module 3, a slidable support rod 31 for the bushing 21, a drive sleeve 32 for driving movement of the bushing 21, said sleeve being slidably fitted onto the support rod 31, and a turning pin 33.

[0066] The support block 30 has a track 29 that is complementarily shaped to the stator module 3 where the latter can be engaged by sliding.

[0067] The support rod 31 has a grip 35 at one end and a plurality of through holes 36 aligned in succession along the end section of the rod 31, opposite the grip 35. The support rod 31 is a cylinder of a diameter equal to the inner diameter of the bushing 21.

[0068] The pitch, size and shape of the holes 36 in the support rod 31 are the same as those of the first holes 13 and the second holes 14.

[0069] The turning pin 33 has a plurality of retractable thrust pins 37 that are aligned in a succession that is the same as the succession of the first holes 13, of the second holes 14 and of the holes 36 in the support rod 31.

[0070] Each thrust pin 37 has a grooved tip 37a that is cone-shaped.

[0071] The coding elements 18, 19, 20 are loaded after the rotor 2 is assembled, but before the connection bar 8 is assembled.

[0072] For this purpose, the stator module 3 is positioned on the support block 30 and the bushing 21 is fitted onto the support rod 31 in a retracted position that leaves the holes 36 uncovered.

[0073] The support rod 31 is inserted into the primary channel 10, in which it is advanced until the holes 36 are aligned with the first holes 13 and the second holes 14, so as to reconstruct an entirely guided path for insertion of the coding elements 18, 19, 20 in the secondary channels 11.

[0074] At this point, the coding elements 18, 19, 20 are inserted from the tertiary channels 12, and simply by gravitational fall they are arranged in the secondary channels 11, leaving the springs 18 partially protracted in the primary channel 10.

[0075] At this point, by means of the turning pin 33, the thrust pins 37 are inserted from the tertiary channels 12.

[0076] As the thrust pins 37 advance, they intercept the springs 18 and compress them until the springs 18 retract entirely inside the secondary channels 11. The thrust pins 37 can be activated in contrast to and by action of elastic elements inside the turning pin 33.

[0077] While the springs 18 are kept in the retracted position in the secondary channels 11, the sleeve 32 that brings the bushing 21 towards the inside of the primary channel 10 is activated.

[0078] The bushing 21 to be inserted is angularly oriented in such a manner that the slit 22 is aligned with the second holes 14.

[0079] Insertion of the bushing 21 in the primary channel 10 for plugging the first holes 13 proceeds gradually without any need to stop, in that during the insertion process, the notch 23 engages onto the grooved tip 40 of the thrust pin 37 until it overlies and partially closes the hole 13, thereby retaining the spring 18 before the bottom of the notch 23 - by intercepting the cone shape of the grooved tip 40 of the thrust pin 37 - lifts it, causing disengagement from the spring 18.

[0080] Inserting a tool (not shown) in the primary channel 10 until it engages with the gripping notches 26 is all that it is needed for disassembly of the bushing 21 after extraction of the connection bar 8.

[0081] Once it is engaged with the gripping notches 26, the tool is turned rotationally so as to set the bushing 21 into rotation about its own axis.

[0082] By virtue of the rotation, the coupling tooth 24 slides in the groove 25, bending towards the inside of the bushing 21 until it emerges from the groove 25 so as to enable extraction of the bushing 21.

[0083] Thus conceived, the modular cylinder lock is susceptible to numerous modifications and variants, all of which falling within the scope of the inventive concept, as defined by the appended claims.

[0084] The materials used, as well as the dimensions, may in practice be of any type, according to needs and the state of the art.

Claims

1. A modular cylinder lock (1) comprising at least one stator module (3) comprising a seat (4) for housing a rotor (2), a primary channel (10) for housing a connecting bar (8) of the modular cylinder lock (1) and a series of secondary channels (11) that have homologous ends connecting with respective first access holes (13) of the primary channel (10), there also being comprised coding elements (18, 19, 20) inserted inside the secondary channels (11) and a cylindrical bushing (21) for plugging said first access holes (13), said bushing (21) being inserted inside said primary channel (10), characterized in that said bushing (21) has one or more gaps in the material that are suitably arranged and configured for the assembly thereof in said primary channel (10) following the positioning of the coding elements (18, 19, 20) in the secondary channels (11), said gaps in the material comprising a slit (22) that extends for the entire extension of an axial generatrix of said bushing (21), and a notch (23) on the edge of the end of the bushing (21) for insertion in said primary channel (10), said notch (23) being in a position that is diametrically opposed to said slit (22) and being of a width that is smaller than the diameter of said first access holes (13).

2. The modular cylinder lock (1) according to claim 1, characterized in that said bushing (21) is made up of a sheet of resilient metallic material.

3. The modular cylinder lock (1) according to claim 1, characterized in that said bushing (21) has means for disassembly from the primary channel (10).

4. The modular cylinder lock (1) according to the preceding claim, characterized in that said disassembly means comprises a resilient coupling tooth (24) that radially projects outwards from the bushing (21) and is housed in a coupling housing.

5. The modular cylinder lock (1) according to the preceding claim, characterized in that said coupling tooth (24) is made up of a portion of said bushing (21) cut along an open line and bent.

6. The modular cylinder lock (1) according to either one of claims 5 and 6, characterized in that said coupling tooth (24) is positioned along the axial generatrix of the bushing (21) wherein said notch (23) is found and at the end of the bushing (21) opposite the end for insertion in the primary channel (10).

7. The modular cylinder lock (1) according to any one of claims 5 to 7, characterized in that said coupling housing comprises a groove (25) along an arc of the circumference of the internal perimeter of the primary channel (10), said groove (25) being of a depth that gradually increases from a null value.

8. The modular cylinder lock (1) according to any one of claims 5 to 8, characterized in that said disassembly means further comprises at least two notches (26) for gripping the bushing (21) and fashioned along longitudinal edges of the slit (22).

9. A cylindrical bushing (21) that is insertable in a primary channel (10) of a stator module (3) of a modular cylinder lock (1) according to claim 1 for plugging access holes (13) with access to secondary channels (11) housing coding elements (18, 19, 20), characterized in that it has a slit (22) extending for the entire extension of an axial generatrix thereof, and a notch (23) on the edge of the end for insertion in the primary channel (10), said notch (23) being in a position that is diametrically opposed to said slit (22) and being of a width that is smaller than the diameter of said access holes (13).

Ansprüche

1. Modulares Zylinderschloss (1) umfassend mindestens ein Statormodul (3), umfassend einen Sitz (4) zum Unterbringen eines Rotors (2), einen Primärkanal (10) zum Unterbringen einer Verbindungsstange (8) des modularen Zylinderschlosses (1) und eine Reihe von Sekundärkanälen (11), deren homologe Enden sich mit den jeweiligen ersten Zugangslöchern (13) des Primärkanals (10) verbinden, wobei auch Codierungselemente (18, 19, 20), die in den Sekundärkanälen (11) eingesetzt sind, und eine zylindrische Buchse (21) zum Verschließen der ersten Zugangslöcher (13) enthalten sind, wobei die Buchse (21) in den Primärkanal (10) eingesetzt ist, dadurch gekennzeichnet, dass die Buchse (21) eine oder mehrere Lücken im Material aufweist, die für deren Montage in dem Primärkanal (10) nach der Positionierung der Codierungselemente (18, 19, 20) in den Sekundärkanälen (11) geeignet angeordnet und konfiguriert sind, wobei die Lücken in dem Material einen Schlitz (22), der sich über die gesamte Ausdehnung einer axialen Generatrix der Buchse (21) erstreckt, und eine Kerbe (23) am Rand des Endes der Buchse (21) zum Einsetzen in den Primärkanal (10) umfassen, wobei sich die Kerbe (23) in einer Position befindet, die dem Schlitz (22) diametral gegenüberliegt und eine Breite aufweist, die kleiner als der Durchmesser der ersten Zugangslöcher (13) ist.

2. Modulares Zylinderschloss (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Buchse (21) aus einer Folie aus elastischem Metallmaterial besteht.

3. Modulares Zylinderschloss (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Buchse (21) Mittel zur Demontage vom Primärkanal (10) aufweist.

4. Modulares Zylinderschloss (1) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Demontagemittel einen elastischen Kupplungszahn (24) umfassen, der radial von der Buchse (21) nach außen vorsteht und in einem Kupplungsgehäuse untergebracht ist.

5. Modulares Zylinderschloss (1) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Kupplungszahn (24) aus einem Abschnitt der Buchse (21) besteht, der entlang einer offenen Linie geschnitten und gebogen ist.

6. Modulares Zylinderschloss (1) nach einem der Ansprüche 5 und 6, dadurch gekennzeichnet, dass der Kupplungszahn (24) entlang der axialen Generatrix der Buchse (21), in der sich die Kerbe (23) befindet, und am Ende der Buchse (21) gegenüber dem Ende zum Einsetzen in den Primärkanal (10) positioniert ist.

7. Modulares Zylinderschloss (1) nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass das Kupplungsgehäuse eine Nut (25) entlang eines Bogens des Umfangs des Innenumfangs des Primärkanals (10) umfasst, wobei die Nut (25) eine Tiefe aufweist, die allmählich von einem Nullwert zunimmt.

8. Modulares Zylinderschloss (1) nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass die Demontagemittel ferner mindestens zwei Kerben (26) zum Greifen der Buchse (21) umfassen, die entlang der Längskanten des Schlitzes (22) ausgebildet sind.

9. Zylindrische Buchse (21), die in einen Primärkanal (10) eines Statormoduls (3) eines modularen Zylinderschlosses (1) nach Anspruch 1 zum Verschließen von Zugangslöchern (13) mit Zugang zu Sekundärkanälen (11), die Codierungselemente (18, 19, 20) unterbringen, einsetzbar ist, dadurch gekennzeichnet, dass sie einen Schlitz (22), der sich über die gesamte Ausdehnung einer axialen Generatrix davon erstreckt, und eine Kerbe (23) am Rand des Endes zum Einsetzen in den Primärkanal (10) aufweist, wobei sich die Kerbe (23) in einer Position befindet, die dem Schlitz (22) diametral gegenüberliegt und eine Breite aufweist, die kleiner als der Durchmesser der ersten Zugangslöcher (13) ist.

Revendications

1. Serrure à cylindre modulaire (1) comprenant au moins un module de stator (3) comprenant un siège (4) servant à loger un rotor (2), un canal primaire (10) servant à loger une barre de raccordement (8) de la serrure à cylindre modulaire (1) et une série de canaux secondaires (11) ayant des extrémités homologues se raccordant à des premiers trous d'accès (13) respectifs du canal primaire (10), celle-ci comprenant également des éléments de codage (18, 19, 20) introduits à l'intérieur des canaux secondaires (11) et une douille cylindrique (21) servant à obturer lesdits premiers trous d'accès (13), ladite douille (21) étant introduite à l'intérieur dudit canal primaire (10), caractérisée en ce que ladite douille (21) comporte un ou plusieurs espaces dans le matériau étant disposés et configurés de manière appropriée pour son assemblage dans ledit canal primaire (10) en suivant le positionnement des éléments de codage (18, 19, 20) dans les canaux secondaires (11), lesdits espaces dans le matériau comprenant une fente (22) se prolongeant sur toute l'extension d'une génératrice axiale de ladite douille (21), et une encoche (23) sur le bord de l'extrémité de la douille (21) destinée à l'introduction dans ledit canal primaire (10), ladite encoche (23) étant dans une position étant diamétralement opposée à ladite fente (22) et étant d'une largeur étant inférieure au diamètre desdits premiers trous d'accès (13).

2. Serrure à cylindre modulaire (1) selon la revendication 1, caractérisée en ce que ladite douille (21) est constituée d'une feuille de matériau métallique résilient.

3. Serrure à cylindre modulaire (1) selon la revendication 1, caractérisée en ce que ladite douille (21) comporte des moyens pour le démontage du canal primaire (10).

4. Serrure à cylindre modulaire (1) selon la revendication précédente, caractérisée en ce que lesdits moyens de démontage comprennent une dent d'accouplement (24) résiliente dépassant radialement vers l'extérieur de la douille (21) et étant logée dans un logement d'accouplement.

5. Serrure à cylindre modulaire (1) selon la revendication précédente, caractérisée en ce que ladite dent d'accouplement (24) est constituée d'une partie de ladite douille (21) coupée le long d'une ligne ouverte et pliée.

6. Serrure à cylindre modulaire (1) selon l'une quelconque des revendications 5 et 6, caractérisée en ce que ladite dent d'accouplement (24) est positionnée le long de la génératrice axiale de la douille (21), où se trouve ladite encoche (23), et à l'extrémité de la douille (21) opposée à l'extrémité pour l'introduction dans le canal primaire (10).

7. Serrure à cylindre modulaire (1) selon l'une quelconque des revendications 5 à 7, caractérisée en ce que ledit logement d'accouplement comprend une rainure (25) le long d'un arc de la circonférence du périmètre interne du canal primaire (10), ladite rainure (25) étant d'une profondeur augmentant progressivement à partir d'une valeur nulle.

8. Serrure à cylindre modulaire (1) selon l'une quelconque des revendications 5 à 8, caractérisée en ce que lesdits moyens de démontage comprennent de plus au moins deux encoches (26) servant à saisir la douille (21) et façonnées le long des bords longitudinaux de la fente (22).

9. Douille cylindrique (21) pouvant être introduite dans un canal primaire (10) d'un module de stator (3) d'une serrure à cylindre modulaire (1) selon la revendication 1 pour obturer des trous d'accès (13) avec accès à des canaux secondaires (11) logeant des éléments de codage (18, 19, 20), caractérisée en ce qu'elle comporte une fente (22) se prolongeant sur toute l'extension d'une génératrice axiale de celle-ci, et une encoche (23) sur le bord de l'extrémité pour l'introduction dans le canal primaire (10), ladite encoche (23) étant dans une position étant diamétralement opposée à ladite fente (22) et étant d'une largeur étant inférieure au diamètre desdits trous d'accès (13).

Drawing