EP3882418A1 - Modular cylinder for security lock - Google Patents

Abstract

Modular cylinder for security lock characterized in that it comprises a central base (1) and two independent stators (7), the base (1) comprises an outer side arm (2) and an inner side arm (3), each provided with several holes (4), each stator (7) has in its foot (8) a longitudinal cavity (9) to receive a lateral arm (2, 3) of the base, and each stator (7) has a pin (5) biased by spring (17) to fit into one of the holes (4) of a side arm (2, 3)

Description

The invention relates to a modular cylinder for a security lock.

A modular cylinder is provided to have a length that can be adapted to the thickness of the door which it closes.

The document EP 2,525,022 describes a modular lock cylinder comprising cylinder modules and at least one intermediate module. On the surfaces in contact of a cylinder module and an intermediate module is provided a mechanical connection means consisting of on one side a connecting member in relief, and on the other side a groove for receiving the liaison body. To allow insertion of the connecting member into the groove, the groove is elastically deformable. In practice, the elasticity of the groove is difficult to implement.

The document WO 2004/099535 describes a modular cylinder for a security lock, comprising a central base and two independent stators. The base has two side arms with several holes. Each stator comprises, in the lower part of its foot, a longitudinal cavity for receiving a lateral arm of the base. Each stator comprises, in its foot, a housing for a pin to be inserted into one of the holes of the lateral arm present in the longitudinal cavity.

The document FROM 197 53 013 describes a modular cylinder for a security lock, comprising a central base and two independent stators. The side arms of the base are fixed to the stators by pins urged by springs. The side arms have two T-shaped notches for tangential cooperation with notches in the stators.

Another problem arises in the case of a modular stator cylinder with a rotor controlled by safety pins. The pins are housed in the foot of the stator. In the event of insertion of an intermediate module, it is necessary to ensure the maintenance of the rotor pins, which requires a complex adapted structure, special tools and great skill in checking pin springs.

One of the aims of the invention is to provide a modular cylinder for a security lock, the length of which can be easily adapted to the thickness of the door.

Another object of the invention is to provide a modular cylinder for a safety lock, the length of which can be changed quickly and without intervention on the safety pins of the rotor.

The subject of the invention is a modular cylinder for a security lock, comprising a central base and two independent stators, the base comprising an external lateral arm and an internal lateral arm, each provided with several holes, each stator comprising in the lower part of its foot a longitudinal cavity to receive a lateral arm of the base, characterized in that each stator comprises in its foot, above the longitudinal cavity, a cylindrical housing accommodating a pin urged towards the arm of the base, by a spring to fit into one of the holes of the lateral arm present in the longitudinal cavity.

According to one embodiment, the stator comprising a rotor with safety pins housed in channels in the foot of the stator, the cylindrical housing housing the pin is placed between the channels of the safety pins of the rotor and the face of the stator located opposite of the central base.

According to one embodiment, the foot of the stator comprises a window opening into the cylindrical housing for the passage of a tool, for the lifting of the pin with compression of the spring, and for the release of the pin for its insertion, under the 'spring action, in one of the holes in the side arm of the base.

According to one embodiment, the longitudinal cavity comprises at its upper part a housing receiving a plate for retaining the rotor safety pins, and separated from the longitudinal cavity by a dovetail slide.

According to one embodiment, the plate has, near its end facing the base, an orifice through which the pin passes towards the lateral arm present in the longitudinal cavity.

According to one embodiment, the cylindrical housing of the pin opens, at its upper part, into the cavity of the stator receiving the rotor, and the rotor comprises a socket for receiving the pin raised by the lifting tool.

According to one embodiment, the cell, in the closed position of the lock, is angularly offset from the cylindrical housing of the pin.

According to one embodiment, the cell is aligned with the cylindrical housing of the pin after a limited rotation of the rotor provided by the key.

According to one embodiment, the cell has a depth at least equal to the length of the pin inserted into a hole in one of the lateral arms of the base.

According to one embodiment, the lateral arms of the base are cylindrical in shape and have at their upper part a flat receiving the holes.

According to one embodiment, the longitudinal cavity of each stator houses a molded sleeve comprising an axial cylindrical cavity, the section of which corresponds to the section of the arm of the base.

According to one embodiment, the molded jacket carries at its lower part an orientation rod, guided by a longitudinal groove in the foot of the stator.

According to one embodiment, the molded liner has at its upper part a longitudinal slot for maintaining the safety pins of the cylinder rotor.

According to one embodiment, the molded liner has, at its end close to the base, an orifice for passing the pin to secure the molded liner and the stator.

According to one embodiment, the length of the lateral arms of the base is adapted to the thickness of the door receiving the security lock.

According to one embodiment, between the central part of the base and a stator, each lateral arm of the base is able to receive at least one intermediate module consisting of a stator extension, carrying a rotor extension and an extension. key.

According to one embodiment, the stator is provided, in a transverse plane, with a circumferential slot constituting a line of weakness.

Brief description of the drawings

• [Fig. 1] est une vue éclatée en perspective d'un cylindre de serrure de sécurité de longueur adaptable, en représentation symbolique ;
• [Fig. 2] est une vue en coupe axiale du cylindre de la Fig. 1 dans une situation de longueur minimale ;
• [Fig. 3] est une vue d'un exemple de réalisation d'une embase pour cylindre modulaire à 9 positions possibles ;
• [Fig. 4] est une vue d'un exemple de réalisation d'une embase de grande longueur;
• [Fig. 5] est une vue symbolique éclatée en perspective d'un cylindre de serrure de sécurité avec des extensions de stator et de rotor ;
• [Fig. 6] est une vue en coupe axiale du cylindre de la Fig. 5 dans une situation de longueur maximale ;
• [Fig. 7] est une vue en perspective d'un exemple de réalisation de chemise moulée.
• [Fig. 8] est une vue transversale d'un exemple de réalisation d'une serrure à rotor comportant une alvéole, en position de fermeture ;
• [Fig. 9] est une vue analogue à celle de la Fig. 8, après rotation du rotor au moyen de la clé ;
• [Fig. 10] est une vue en coupe axiale de la serrure de la Fig. 9 ;
• [Fig. 11] est une vue d'un stator dont la partie inférieure ne comporte pas de rainure longitudinale ;
• [Fig. 12] est une vue axiale du stator de la Fig. 11 avec embase ;
• [Fig. 13] est une vue analogue à la Fig. 1, avec plaquettes au lieu de chemises ;
• [Fig. 14] est une vue d'un stator avec plaquette selon la Fig. 13.

The invention is described with reference to the accompanying drawing in which:

• [ Fig. 1 ] is an exploded perspective view of a security lock cylinder of adaptable length, in symbolic representation;
• [ Fig. 2 ] is an axial sectional view of the cylinder of the Fig. 1 in a minimum length situation;
• [ Fig. 3 ] is a view of an exemplary embodiment of a base for a modular cylinder with 9 possible positions;
• [ Fig. 4 ] is a view of an exemplary embodiment of a very long base;
• [ Fig. 5 ] is a symbolic exploded perspective view of a security lock cylinder with stator and rotor extensions;
• [ Fig. 6 ] is an axial sectional view of the cylinder of the Fig. 5 in a maximum length situation;
• [ Fig. 7 ] is a perspective view of an exemplary embodiment of a molded liner.
• [ Fig. 8 ] is a transverse view of an exemplary embodiment of a rotor lock comprising a cell, in the closed position;
• [ Fig. 9 ] is a view analogous to that of the Fig. 8 , after rotation of the rotor by means of the key;
• [ Fig. 10 ] is an axial sectional view of the lock of the Fig. 9 ;
• [ Fig. 11 ] is a view of a stator, the lower part of which does not have a longitudinal groove;
• [ Fig. 12 ] is an axial view of the stator of the Fig. 11 with base;
• [ Fig. 13 ] is a view analogous to Fig. 1 , with pads instead of shirts;
• [ Fig. 14 ] is a view of a stator with a plate according to Fig. 13 .

Description of embodiment (s)

The security lock cylinder according to the invention comprises a base 1 carrying two lateral arms, one 2 oriented towards the outside of the place protected by the lock, the other 3 oriented towards the inside. Each of the arms 2, 3 is cylindrical and has at its upper part a flat orientation 6, and it is provided on this flat 6 with several holes 4 suitable for receiving a fixing pin 5. Each arm of the base receives a stator such as 7, the foot 8 of which accommodates the safety pins of the rotor 25 in channels 24. To retain the safety pins of the rotor and ensure the mechanical connection of the stator 7 and the base 1, the foot 8 of the stator 7 comprises a longitudinal cavity 9 capable of receiving a molded sleeve 10. The sleeve 10 comprises an axial cylindrical cavity 11, the section of which corresponds exactly to the section of the arm 2 of the base 1, the flat 6 ensuring its orientation. On the outside, the sleeve 10 is substantially cylindrical, subject to the following points: at the lower part, it carries an orientation rod 12, guided by a longitudinal groove 13 of the foot 8 of the stator 7; at the upper part it has a longitudinal slot 14 to ensure the maintenance of the safety pins of the rotor; at its end close to the base 1, it has an orifice 15 intended for the passage of the pin 5 for insertion into one of the holes 4 in order to ensure the locking in position of the stator 7 relative to the base 1.

The stator 7 is of conventional structure as well as its rotor. The foot 8 of the stator 7, in addition to the longitudinal cavity 9 receiving the sleeve 10, has laterally and near its face facing the base 1, a window 16 opening into the cylindrical housing 23 receiving the pin 5, in order to allow the passage of a pin lifting tool 5.

The pin 5 is housed in the cylindrical housing 23 of the stator 7 placed closest to the central part of the base 1. The pin 5 is biased towards the arm of the base 1 by a spring 17. When the sleeve 10 is inserted in the longitudinal cavity 9 of the foot 8 of the stator 7, the pin 5 is applied by the spring 17 in the orifice 15 and it secures the sleeve 10 and the stator 7. When the arm 2, or 3, of the base is introduced into the axial cylindrical cavity 11 of the sleeve 10, the pin 5 is raised by the cutaway 18 of the free end of the arm 2, or 3, then it is inserted into the first hole 4 of the arm 2, or 3. It then performs its second function: the securing of the stator 7 and the base 1. A lifting tool passing through the window 16 allows the pin 5 to be lifted by compressing the spring 17 to release the stator 8 and allow it to be moved. , either towards another hole 4 of the arm 2, or 3, or towards the outside, outside the arm.

The modular cylinder may comprise on each arm of the base, 0, 1 or 2, intermediate modules each consisting of a stator extension 19, itself carrying a rotor extension 20 and a key extension (not shown). Each rotor extension has on its rear face two diametrically opposed bosses, for example in the form of a cylindrical sector. On its front face, each rotor extension carries two arcs in relief, separated by two diametrically opposed interruptions, of shape corresponding to that of said bosses. Thus the connection between rotor extensions is ensured by interlocking, by cooperation of rigid means, resulting in operational safety.

To ensure the installation of these intermediate modules on the base, the stator extensions 19 have at their base a slot 21 of dimensions corresponding to those of a straight section of arms 2 or 3. The intermediate modules are put in place. resting towards the central part of the base 1, and are held by the stator 7, which is placed on the arm 2 or 3, and resting against an intermediate module. The stator 7 is then blocked by the pin 5 which fits into a hole 4. Each side arm 2, 3 of the base 1 is able to receive at least one intermediate module.

In the embodiment shown Fig. 3 , each arm has three holes 4, which allows three stator positions on each side of the base 1, and nine possible relative positions of the stators, corresponding to the different arrangements in the thickness of the door equipped with the modular cylinder. Each arm 2, 3 of the base can receive up to two intermediate modules, as shown Fig. 6 .

For particularly thick doors, a base 1 equipped with long arms ( Fig. 4 ) which can accommodate more intermediate modules. The length of the side arms 2, 3 of the base 1 is adapted to the thickness of the door receiving the security lock. Finally, on its lower strip 12, the sleeve 10 may include a notch 22 for a crimping point on the stator, as a security.

According to one embodiment, ( Fig. 8 , Fig. 9 ), the cylindrical housing 23 of the pin 5 opens at its upper part into the cavity of the stator 7 receiving the rotor 25. The rotor 25 comprises a cell 26 which, in the closed position of the lock, is angularly offset from the cylindrical housing 23 of the pin 5. This socket 26 has a depth A at least equal to the length B of the pin 5 inserted in a hole 4 of one of the side arms 2, 3 of the base 1. In the closed position of the lock, the pin 5 has its tip inserted into a hole 4 of an arm of the base, and it occupies the entire length of the cylindrical housing 23. It is flush with the cavity of the stator receiving the rotor. In the event of an attempt to lift the pin 5 by a lifting tool, the pin 5 abuts on the rotor 25 and cannot come out of the hole 4. The pin 5 ensures the connection between the stator 7 and the base 1.

When the key is put in place in the lock, it can drive the rotor 25 in limited rotation until the cell 26 is placed in the axis of the cylindrical housing 23. The pin 5 can then be raised to the bottom of the socket. 'cell 26, thus emerging from hole 4, freeing stator 7 from base 1, and allowing relative movement of the stator and of the base. The depth A of the cell 26 ( Fig. 10 ) is at least equal to the length B of the pin 5 inserted in the hole 4 of the lateral arm of the base 1. This arrangement involving the presence of the key of the lock adds a safety criterion to the adjustment operation in lock position.

According to an alternative embodiment, ( Fig. 11, Fig. 12 ), the stator 7 does not have, at the lower part of its foot 8, the groove 13. It has passage holes 27 for the installation of the safety pins of the rotor 25, and between these holes, a continuous structure which corresponds to better mechanical resistance.

According to an alternative embodiment, ( Fig. 13, Fig. 14 ), the retention of the safety pins of the rotor 25 is ensured by means of a plate 28. The longitudinal cavity 9 of the foot 8 of the stator 7 comprises, at its upper part, a housing 29 separated from the longitudinal cavity 9 by a slide dovetail 30.

The plate 28 is inserted into the housing 29 and it has, near its end facing the base 1, an orifice (31) for the passage of the pin 5.

Advantageously, the plate 28 is crimped at the bottom of the stator. With this plate 28 in the housing 29, the entire interior space of the longitudinal cavity 9 is occupied by the lateral arm 2, 3 of the base, the diameter of which is larger, and which is therefore more resistant.

According to an alternative embodiment, the stator 7 is provided, in a transverse plane, with a circumferential slot 32, constituting a line of weakness, favorable to rupture of the stator in the event of whipping. This slot 32 having played its role in the event of whipping, the outer part 34 of the stator 7 is lost, but the inner part 33 remains in its position and cannot be grasped from the outside.

Claims (17)

Modular cylinder for security lock comprising a central base (1) and two independent stators (7), the base (1) comprising an outer side arm (2) and an inner side arm (3), each provided with several holes ( 4), each stator (7) comprising in the lower part of its foot (8) a longitudinal cavity (9) for receiving a lateral arm (2, 3) of the base, characterized in that each stator (7) comprises in its foot (8), above the longitudinal cavity (9), a cylindrical housing (23) accommodating a pin (5) urged towards the arm of the base (1), by a spring (17) for s 'insert into one of the holes (4) of the side arm (2, 3) present in the longitudinal cavity (9). Cylinder according to Claim 1, characterized in that the stator (7) comprising a rotor (25) with safety pins housed in channels (24) in the foot (8) of the stator (7), the cylindrical housing (23) accommodating the pin (5) is placed between the channels (24) of the safety pins of the rotor (25) and the face of the stator (7) located opposite the central base (1). Cylinder according to Claim 1, characterized in that the foot (8) of the stator (7) comprises a window (16) opening into the cylindrical housing (23) for the passage of a tool, for lifting the pin (5) with compression of the spring (17), and for the release of the pin (5) for its insertion, under the action of the spring (17), in one of the holes (4) of the side arm (2, 3) of the base (1). Cylinder according to Claim 1, characterized in that the longitudinal cavity (9) comprises at its upper part a housing (29) receiving a plate (28) for retaining the safety pins of the rotor (25), and separated from the longitudinal cavity ( 9) by a dovetail slide (30). Cylinder according to Claim 4, characterized in that the plate (28) has, near its end facing the base (1), a passage opening (31) from the pin (5) to the lateral arm (2, 3) present in the longitudinal cavity (9). Cylinder according to Claim 1, characterized in that the cylindrical housing (23) of the pin (5) opens, at its upper part, in the cavity of the stator (7) receiving the rotor (25), and the rotor (25) comprises a recess (26) for receiving the pin (5) raised by the lifting tool. Cylinder according to Claim 1, characterized in that the cell (26), in the closed position of the lock, is angularly offset from the cylindrical housing (23) of the pin (5). Cylinder according to Claim 1, characterized in that the cell (26) is aligned with the cylindrical housing (23) of the pin (5) after a limited rotation of the rotor (25) provided by the key. Cylinder according to Claim 1, characterized in that the cell (26) has a depth (A) at least equal to the length (B) of the pin (5) inserted in a hole (4) of one of the lateral arms (2, 3) of the base (1). Cylinder according to Claim 1, characterized in that the lateral arms (2, 3) of the base are cylindrical in shape and have at their upper part a flat (6) receiving the holes (4). Cylinder according to Claim 1, characterized in that the longitudinal cavity (9) of each stator (7) accommodates a molded sleeve (10) comprising an axial cylindrical cavity (11) whose section corresponds to the section of the arm (2, 3) of the base (1). Cylinder according to Claim 11, characterized in that the molded jacket (10) carries at its lower part an orientation rod (12), guided by a longitudinal groove (13) of the foot (8) of the stator (7). Cylinder according to Claim 11, characterized in that the molded liner (10) has at its upper part a longitudinal slot (14) to ensure the retention of the safety pins of the rotor of the cylinder. Cylinder according to Claim 11, characterized in that the molded liner (10) has, at its end close to the base (1), an orifice (15) for the passage of the pin (5) to secure the molded liner (10). and the stator (7). Cylinder according to Claim 1, characterized in that the length of the lateral arms (2, 3) of the base is adapted to the thickness of the door receiving the security lock. Cylinder according to Claim 1, characterized in that between the central part of the base (1) and a stator (7), each lateral arm (2, 3) of the base (1) is able to receive at least one intermediate module consisting of a stator extension (19) carrying a rotor extension (20) and a key extension. Cylinder according to Claim 1, characterized in that the stator (7) is provided in a transverse plane with a circumferential slot (32) constituting a line of weakness.

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