EP0268517A1 - Protection for a door cylinder lock, and lock equipped therewith - Google Patents

Protection for a door cylinder lock, and lock equipped therewith Download PDF

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Publication number
EP0268517A1
EP0268517A1 EP87402394A EP87402394A EP0268517A1 EP 0268517 A1 EP0268517 A1 EP 0268517A1 EP 87402394 A EP87402394 A EP 87402394A EP 87402394 A EP87402394 A EP 87402394A EP 0268517 A1 EP0268517 A1 EP 0268517A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
door
plate
protective member
lock
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87402394A
Other languages
German (de)
French (fr)
Other versions
EP0268517B1 (en
Inventor
Robert Mangin
Jean-Claude Lefranc
Hervé Habert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Assa Abloy France SAS
Original Assignee
Vachette SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vachette SA filed Critical Vachette SA
Publication of EP0268517A1 publication Critical patent/EP0268517A1/en
Application granted granted Critical
Publication of EP0268517B1 publication Critical patent/EP0268517B1/en
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B63/00—Locks or fastenings with special structural characteristics
    • E05B63/0056—Locks with adjustable or exchangeable lock parts
    • E05B63/006—Locks with adjustable or exchangeable lock parts for different door thicknesses
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/02—Striking-plates; Keepers; Bolt staples; Escutcheons
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/20—Means independent of the locking mechanism for preventing unauthorised opening, e.g. for securing the bolt in the fastening position
    • E05B17/2084—Means to prevent forced opening by attack, tampering or jimmying

Definitions

  • the present invention relates to a device for protecting a profiled cylinder for a door lock, this lock possibly being a mortise lock or a surface-mounted lock.
  • cylinder locks are mounted in doors, in particular pivoting doors with a single leaf, so that the cylinder passes through the door in its thickness and has, projecting outwards relative to the external face of the door, a cylinder head, in which is formed a key insertion opening.
  • the cylinder also has, in the part of its lateral face located, either in the thickness of the door, if it is a mortise lock, or projecting inwards relative to the internal face of the door, in the case of a surface-mounted lock, a recess in which passes an actuating bit of the lock mechanism operating the bolt and allowing its locking in the keeper, mounted, for example, in the door frame the door, this lock mechanism being respectively housed in a mortise of the door (mortise lock) or fixed against the internal face of the door (applied lock).
  • the applicant company has already proposed a solution in its French Patent Application No. 85-09087 filed June 14, 1985 to achieve a protection device that protects not only the cylinder against burglary attempts by tearing and / or torsion, but also the lock mechanism against attempts to break in by drilling through the door, and this, although the projection of the cylinder relative to the door may be different from one door to another, and in taking into account that the cylinder of the lock can be chosen from a range of cylinders of standard lengths staggered with a constant pitch which, according to European standards, is 5 mm.
  • the protection device comprises an outer recess plate with a recess fixed against the door, said recess containing a member for protecting the head of the cylinder and shims for adjusting the thickness, which are arranged one side and / or the other of a flange of the member in order to compensate, on the value of an elongation step of the cylinders chosen in a range, any variation in the distance over which the cylinder head is protruding outward from the door.
  • the subject of the present invention is the new industrial product which constitutes a device for protecting a profiled cylinder, for a door lock, this cylinder comprising a head intended to protrude from the external face of the door along a length which may vary, in particular according to the length of the cylinder, the thickness of the door, or the position of the cylinder relative to the door, this protective device comprising: - an outer counter plate, intended to be kept applied by a bearing face against at least one zone of the outer face of the door, which extends opposite the lock and around the cylinder head, this against -plate being crossed by an orifice which opens into the external face of said counter-plate, a cylinder protection member comprising a tubular body intended to surround the cylinder head and to be engaged, with reduced clearance, in the orifice of the counterplate, the tubular body being partially closed, at its axial end intended to protrude outside the counter plate, by a radial disc pierced with an orifice limiting access to the opening for introducing the key, this protective
  • the elastic means are formed in particular by means suitable for working in compression, bearing, at one end, against the internal face of the counter-plate and, at another end, against a stop member linked to the protection member .
  • this stop member is constituted by a support plate made integral with the protection member.
  • the protective member comprises a head of larger diameter capable of projecting from the external face of the counterplate, followed by a sleeve of smaller diameter suitable for protrude beyond the internal face of the counterplate, in a housing formed in the door, the shoulder formed at the transition of the head of the protection member and of the sleeve being adapted to come into abutment against a corresponding shoulder provided in the orifice of the counter-plate, under the effect of the elastic means, when the protection member is not subjected to other stresses.
  • the elastic means can be constituted by a helical spring surrounding the protection member.
  • the support plate fixed against the face of the protective member adjacent to the door, is located in a housing of the counter-plate, connection means being provided between the plate. support and counter plate to allow sliding of the plate and the protective assembly in a direction parallel to the generatrices of the profiled cylinder, the connecting means further comprising stop means for limiting the movement of the plate support.
  • the elastic means can be formed by pressure springs regularly distributed around the protection member.
  • the contour of the support plate or, in the case of the first embodiment, the contour of the protection member may have at least one flat suitable for cooperating with a corresponding flat provided in the housing of the counter-plate. .
  • the protection member comprises a clean protection washer to be applied to the key entry provided in the cylinder
  • a sheath may be disposed at the inside of the protective member for retaining the washer, this sheath surrounding the profiled cylinder of the lock.
  • the invention also relates to a lock equipped with a protection device as defined above.
  • a door having a mortise 2 intended to receive a mortise lock the overall mechanism of which is not shown, and which includes, at its lower part, a cylinder 3, which is a double profiled cylinder, chosen, depending on the thickness of the door to be fitted, in a range of cylinders whose standard lengths range from 5 to 5 mm.
  • the cylinder 3 comprises, if one considers it in its mounting position, an upper part 3 a , of cylindrical shape of revolution with an axis perpendicular to the mean plane of the door 1, and a lower part 3 b , having a form of set of flattened rectangular parallelepiped, connecting radially to part 3 a by one of its elongated walls of smaller width, the opposite elongated wall being rounded.
  • the cylinder 3 is mounted in a bore 1 a which passes through the door 1 in its thickness, and its central part has a transverse notch 4 formed over the entire section of the upper part 3 a and extending into the lower part 3 b .
  • the notch opens in the mortise of the door 1, in which are housed the so-called "half-turn" lock mechanism, for controlling the bolt, and the associated lock mechanism for locking the bolt in a keeper mounted in the frame, mechanisms which are not shown.
  • the cylinder head 5 which has an opening for introducing the key in its end face, protrudes over a certain distance l 1 (FIG. 1) outside the face external 9 of door 1.
  • the mechanisms of the lock, the bolt and the strike are well known organs, it does not appear useful to describe them further, nor to represent them.
  • the protection device comprises an outer counter plate 7, of rectangular shape with rounded tops, which is joined by a bearing or internal face 8 against the external face 9, and which covers an area of this face 9 which extends not only facing the lock and the cylinder 3, but also beyond the horizontal projection of the silhouette of the lock on the external face 9 of the door, upwards and downwards, as can be seen on the Figure 1.
  • the width of the counter plate 7 is such that the long side closest to the edge of the door 1 is as close as possible to the edge of the zone of overlap of the external face of the door by an external part of the jamb and directly adjacent to the door frame, in order to prevent the introduction of a crowbar between door 1 and the door frame.
  • an orifice 10 is made which passes right through it and which opens into its external face 11.
  • This orifice is delimited by a cylindrical wall of revolution 12 adjacent to said external face 11 and of axis perpendicular to the mean plane of the counterplate 7, and by a wall 13 adjacent to the bearing face 8.
  • the wall 13 has a form of cylindrical assembly with an axis coincident with that of the wall 12 but of diameter smaller than that of the latter and further comprising two flats, diametrically opposite, arranged parallel to the vertical edges of the counter plate 7, the two walls 12 and 13 being joined by a shoulder 14.
  • the bore 1a in the door 1 for the passage of the cylinder 3 comprises, in its region adjacent to the outer face 9 of the door, a cylindrical recess of revolution 1b.
  • the bearing face 8 of the counter plate 7 has a small circular counterbore 15, and a cylindrical terminal 16 is welded to the counter plate 7, at the bottom of each counterbore 15, of so that the terminals 16 extend perpendicularly to the support face 8 and projecting therefrom.
  • the terminals 16 each have a threaded bore 17 which opens in their free end face, and they end in a frustoconical end piece 18 facilitating their engagement in holes 19 passing through the door 1 in its thickness and housing said terminals 16.
  • the counterplate 7 and the terminals 16 are made of a steel which has undergone a treatment of the carbonitriding or similar type, in order to have a high surface hardness.
  • the counter plate 7 is anchored to the door 1 using an inner plate 20 and four countersunk screws 21.
  • the inner plate 20 has a rectangular shape of the same dimensions as the counter plate 7, and it is pierced with an orifice 22 for passage of the cylinder 3 (the end face of the internal side of the door also has an opening for introducing the key for locking from the inside), an orifice 23 for the passage of an axis of the handle for operating the lock 2 from the inside, and four holes for the passage of the screws 21, serving as housings for the heads of these screws, when their threaded bodies are screwed into the bores threaded terminals 16, and ensure the retention of the counter plate 7.
  • the inner plate 20 carries, projecting from its support face by which is applied against the internal face 24 of the door 1, two nuts, such as 25 (FIG. 1) which are housed each in a small recess dug in the internal face 24 of the door 1, and in which are screwed screws 26 for fixing an inner crutch support plate 27, whose crutch handle 28 has its axis which passes through the orifice 23 to enter the lock.
  • the device for protecting said lock also comprises a member 29 for protecting the cylinder 3.
  • This member 29, made of steel treated to resist impact and drilling, comprises a tubular body 30, one axial end of which is closed by a radial disc 31 d 'a thickness substantially greater than that of the body 30.
  • the internal wall of the body 30 is parallel to the external surface of the profiled cylinder 3; as for its external wall, it is cylindrical of revolution in its part 30 a (or head) adjacent to the disc 31 (in correspondence with the cylindrical wall 12) and of cylindrical shape of smaller diameter with two diametrically opposed flats, in the part restance 30 b (or sleeve), in correspondence with the wall 13.
  • These two parts 30 a , 30 b are joined by a shoulder 29 a , which can come into abutment against the shoulder 14 described above.
  • the body 30 is engaged with a reduced clearance in the orifice 10 of the counter plate 7 and it projects out of the bearing face 8 of the latter, the radial disc 31 projecting out of the external face 11 of said against the plate 7 in order to protect the head 5 of the cylinder 3.
  • the outer side wall 31a of the radial disk 31 is slightly chamfered.
  • the sleeve 30 b of smaller diameter than the head 30a protrudes into the recess 1b of the door 1.
  • the radial disc 31 is pierced with an eccentric circular opening 32, forming an opening for the passage of the key towards the opening for introduction into the cylinder 3, when the protective member 29 is mounted on the head 5 of said cylinder 3.
  • the lock protection device also comprises a washer 33, made of special steel like the protection member 29, and which is mounted to rotate freely in the circular opening of the disc 31.
  • This washer 33 is a shouldered washer retained axially outwardly by its shoulder 34 against a shoulder of complementary shape presented by the disc 31 and delimiting the eccentric opening of the latter.
  • the washer 33 reveals the opening for introducing the key in the head 5 of the cylinder 3 only when it occupies a particular position in rotation in the tubular body 30.
  • the washer 33 has, on its internal face when considered in its mounting position, a short peripheral skirt 35 intended to be placed around the projection 36 out of the part 3a of the cylinder 3 itself, projection that constitutes a barrel carrying the blade 6 and rotatably mounted in this part 3a of the cylinder 3.
  • the protective member 29 is completed by a sheath 37 whose internal cross section follows the contour of the profiled cylinder 3, and which is housed in the interior space of the body 30 by being applied against the internal wall of the latter; its interior and exterior surfaces are of such dimensions that they surround the cylinder 3 and maintain it in the correct position relative to the member 29 and to the associated washer 33 when the protection device is assembled. In addition, it ensures the retention of the aforementioned washer 33 by coming to bear against the skirt 35 of this washer. Its length is such that in the mounting position, its edge located opposite the washer 33 is in the same plane as the corresponding edge of the body 30.
  • the lock protection device finally comprises a plate 38 having the shape of a disc having a central perforation for the passage of the cylinder 3 and comes to bear against the two edges situated in the same plane of the sleeve 37 and of the body 30, said plate 38 being fixed to the latter by four screws 39.
  • the plate 38 serves to support one end of a helical spring 40 which surrounds the body 30 and the other end of which comes, in the mounting position of the protection device, bearing against the internal wall of the counter-plate 7 bordering the orifice 10.
  • the plate 38 extends, at its periphery, beyond the body 30.
  • the assembly of the protection device which has just been described can be carried out very simply.
  • the member 29 is engaged in the orifice 10 of the counter-plate 7 until the shoulders 14 and 29 a come to bear against one another.
  • the washer 33 is engaged in the opening 32 of the radial disc 31 of the member 29, then the sheath 37 is introduced, the helical spring 40 is placed around the body 30 of the member 29 and the plate is affixed. support 38, which is fixed using the screws 39 on the aforementioned body 30.
  • a cylinder 3 is chosen from a range of cylinders of standard lengths staggered with a pitch of 5 mm, this choice being made taking into account the thickness of door 1 to be fitted and of the position of the median plane of the lock, and therefore of the mortise 2, with respect to the external face 9 of this door.
  • the cylinder 3 is placed in the door, through the bore 1 a , in cooperation with the lock. According to the configuration shown in Figure 1, the head 5 of the cylinder 3 protrudes over a distance l 1 relative to the outer face 9 of the door.
  • the support plate 38 and the sheath 37 are engaged on the head 5.
  • the protective device is made to colisse on the cylinder 3, parallel to the generatrices of the cylinder until the skirt 35 comes into axial abutment against the head 5.
  • the sleeve 30b is then engaged in the recess 1b and the plate 38, while being in the vicinity of the bottom of the recess, remains slightly apart in the axial direction.
  • the spring 40 will be more or less compressed because the shoulder 14 will more or less move away from the shoulder 29 a , depending on the projection of the head 5, relative to the face 9
  • This compression of the spring 40 and the sliding of the counter-plate 7 relative to the member 29 make it possible to absorb variations in the length l 1 of projection less than one step.
  • FIG. 1 a configuration is shown according to which, in the mounted position, the shoulder 14 of the counterplate 7 and the shoulder 29 a of the body 30 are practically in abutment against one another, the compression of the spring 40 which has not been substantially modified during assembly.
  • FIG. 2 a configuration is shown in which the length l 2 of the projection formed by the cylinder 3 outside the door 1 is greater than the corresponding length l 1 of the configuration of the fugre 1; under these conditions, the spring 40 is more compressed than in the previous case.
  • FIG. 3 a configuration is shown for which the length of the projection l 3 is greater than l 2, which leads to maximum compression of the spring 40. If the projection should have a length still greater than l 3, it the editor should choose a cylinder 3 with a shorter length of one step (5 mm in the example considered).
  • the outer face 9 of the door 1 does not include any recess or recess around the external opening of the bore 1 has provided for the passage of the cylinder 3.
  • the protection member 129 made of treated steel, is essentially constituted by the cylindrical part of revolution 130 a (or head) adjacent to the disc 31. This protection member 129 does not have, on the door side, an extension of more small diameter similar to the extension 30b of Figures 1 to 3, and does not protrude beyond the bearing face 8 of the counter plate.
  • the support plate 138 is fixed, against the face of the protective member 129 adjacent to the door 1, by means of the screws 39, for example four in number evenly distributed along the circumference.
  • This retaining plate 138 has a circular contour with two flats, preferably diametrically opposite, adapted to cooperate with corresponding flats provided in a housing 41 formed in the counter plate 7 and opening on the side of the door.
  • the internal contour of this housing 41 matches that of the plate 138; the cooperation of the flats ensures a blocking in rotation of the plate 138 relative to the counter plate 7, while allowing a displacement in translation of this plate in a direction orthogonal to the mean plane of the counter plate 7.
  • the orifice opens into the housing 41.
  • the protective member 129 and the plate 138 can thus slide, relative to the counter plate 7, in the above-mentioned direction orthogonal to the mean plane of the counter plate.
  • connection means 42 in particular formed by screws or nails.
  • connection means 42 comprise stop means 43, in particular formed by a head, capable of limiting the movement of the plate 138 on the side opposite to the washer 33.
  • the connection means 42 and their stop means 43 are arranged in such a way that the external face of the plate 138, when the latter is in abutment against 43 and at the most distant from the washer 33, lies in the plane of the internal face 8 of the counter plate 7, this internal face being intended to come into abutment against the face 9 of the door 1.
  • a clearance j (FIG. 4), making it possible to compensate for possible length variations of the projection of the cylinder 3, relative to the face 9, exists between the bottom of the housing 41 and the opposite face of the plate 138.
  • the connecting means 42 for example four regularly distributed, are provided to allow sliding of the plate 138, and of the protective assembly comprising the member 129, in a direction parallel to the generatrices of the profiled cylinder 3.
  • Pressure springs 44 are provided between the internal face of the plate 138 and the counter plate 7 which preferably comprises a blind hole 45, in correspondence with each spring 44, to serve as housing for part of this spring.
  • the compression springs 44 trapped between the retaining plate and the counterplate, make it possible to recall the protection 129 against the end of the cylinder 3.
  • the length of the cylinder 3 is chosen which is suitable in the staggered range from 5 to 5 mm.
  • This protection assembly includes the member 129, the washer 33, the sleeve 137 and the support plate 138.
  • Figure 5 illustrates a configuration in which the length l 2 of projection is greater than the length l 1 of Figure 4.
  • the springs 44 are more compressed and the plate 138 is slightly spaced from the outer face 9 of the door.
  • FIG. 6 illustrates a configuration for which the length of the projection l 3 is greater than l 2 (FIG. 5) and corresponds to maximum compression of the spring 44.
  • the plate 138 is in abutment against the bottom of the housing 41. If the projection should have a length greater than l 3, the editor should then choose a cylinder 3 with a length less than one step (5 mm in the example considered).
  • the protection device according to the invention is particularly advantageous in terms of manufacturing, storage, marketing and installation, since a single model makes it possible to ensure almost all cases of installation.
  • the variant embodiment of FIGS. 4 to 6 makes it possible to install the protection device without recess or recess in the door 1.
  • the protective device of the invention also has the advantage of not having a hand, and can be mounted on a door opening to the left or to the right. This completes the advantage of applying such a protection device to a lock of a kind which makes it possible to secure left and right by simply reversing the 1/2 turn.
  • the protection device according to the invention constitutes a ready-to-assemble assembly that is extremely simple and quick to install.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Lock And Its Accessories (AREA)

Abstract

1. A device for protecting a shaped cylinder (3) for a door lock, this cylinder (3) comprising a head (5) intended to project on the external side (9) of the door (1) over a length (11, 12, 13) which can vary, in particular according to the length of the cylinder (3), the thickness of the door (1), or the position of the cylinder (3) in relation to the door (1), this protective device comprising : - an external escutcheon (7), intended to be kept applied with a contact face (8) to as least one zone of the external side (9) of the door (1), which extends opposite the lock (2) and around the head (5) of the cylinder (3), this escutcheon (7) being traversed by an opening (10) which issues in the external face (11) of the said escutcheon (7) ; - a protective element (29, 129) for the cylinder (3) comprising a tubular body (30, 130_a) intended to surround the head (5) of the cylinder (3) and to be engaged with slight clearance in the opening (10) of the escutcheon (7), the tubular body (30, 130_a) being partly closed, at its axial end intended to project outside the escutcheon (7), by a radial disc (31) pierced by an opening (32) limiting the access towards the opening for insertion of the key, this protective element (29, 129) being slidably mounted in the said escutcheon (7), characterized in that provision is made for elastic means (40, 44) between the escutcheon (7) and the protective element (29, 129) these elastic means having the tendency to restore the protective element (29, 129) towards the door (1), the assembly being such that the sliding permitted by the elastic means (40, 44) between the protective element (29, 129) and the escutcheon (7) makes it possible to absorb variations in the projection of the head (5) of the cylinder (3) in relation to the (door 1).

Description

La présente invention se rapporte à un dispositif de protection d'un cylindre profilé pour une serrure de porte, cette serrure pouvant être une serrure à larder ou une serrure en applique.The present invention relates to a device for protecting a profiled cylinder for a door lock, this lock possibly being a mortise lock or a surface-mounted lock.

On sait que les serrures à cylindre se montent dans des portes, en particulier des portes pivotantes à un seul battant, de sorte que le cylindre traverse la porte dans son épaisseur et présente, en saillie vers l'extérieur par rapport à la face externe de la porte, une tête de cylindre, dans laquelle est formée une ouverture d'introduction d'une clé. Le cylindre présente également, dans la partie de sa face latérale située, soit dans l'épaisseur de la porte, s'il s'agit d'une serrure à larder, soit en sailllie vers l'intérieur par rapport à la face interne de la porte, s'il s'agit d'une serrure en applique, un évidement dans lequel passe un panneton d'actionnement du mécanisme de serrure manoeuvrant le pêne et permettant son verrouillage dans la gâche, montée, par exemple, dans le chambranle de la porte, ce mécanisme de serrure étant respectivement logé dans une mortaise de la porte (serrure à larder) ou fixé contre la face interne de la porte (serrure en applique).It is known that cylinder locks are mounted in doors, in particular pivoting doors with a single leaf, so that the cylinder passes through the door in its thickness and has, projecting outwards relative to the external face of the door, a cylinder head, in which is formed a key insertion opening. The cylinder also has, in the part of its lateral face located, either in the thickness of the door, if it is a mortise lock, or projecting inwards relative to the internal face of the door, in the case of a surface-mounted lock, a recess in which passes an actuating bit of the lock mechanism operating the bolt and allowing its locking in the keeper, mounted, for example, in the door frame the door, this lock mechanism being respectively housed in a mortise of the door (mortise lock) or fixed against the internal face of the door (applied lock).

La protection des têtes de cylindre de telles serrures pose un problème, dans la mesure où l'épaisseur des portes peut varier d'une porte à l'autre, ainsi d'ailleurs que la position de la mortaise de logement du mécanisme de serrure, dans le cas des serrures à larder. Il en résulte que l'installateur de la serrure et/ou d'un dispositif de protection ne connaît pas à l'avance la distance sur laquelle la tête de cylindre est en saillie vers l'extérieur de la porte.The protection of the cylinder heads of such locks poses a problem, since the thickness of the doors can vary from one door to another, as well as the position of the housing mortise of the lock mechanism, in the case of mortise locks. As a result, the installer of the lock and / or of a protection device does not know in advance the distance over which the cylinder head projects outwards from the door.

Actuellement, après avoir monté la serrure, l'installateur mesure cette distance de saillie et choisit, dans un jeu de rosaces d'épaisseurs différentes, celle dont l'épaisseur s'approche le plus de la distance mesurée, et il la dispose ensuite autour de la tête du cylindre et la fixe contre la face externe de la porte. La protection ainsi assurée n'est que très imparfaite, car il est possible de faire sauter la rosace de la porte à l'aide d'un burin, et d'avoir ensuite accès à la tête du cylindre pour l'arracher ou la forcer par torsion. De plus, une telle rosace ne protège pratiquement pas le mécanisme de serrure contre les perçages pratiqués au travers de la porte et dans le mécanisme, afin de forcer ce dernier.Currently, after having mounted the lock, the installer measures this projection distance and chooses, from a set of rosettes of different thicknesses, that of which the thickness comes closest to the measured distance, and he then places it around the cylinder head and fixes it against the external face of the door. The protection thus provided is only very imperfect, because it is possible to blow up the rosette of the door using a chisel, and then to have access to the head of the cylinder to tear it off or force it by twisting. In addition, such a rose practically does not protect the lock mechanism against the holes made through the door and in the mechanism, in order to force the latter.

La société déposante a déjà proposé une solution, dans sa demande de brevet français n o 85-09087 déposée le 14 juin 1985 pour réaliser un dispositif de protection qui permette de protéger non seulement le cylindre contre les tentatives d'effractions par arrachement et/ou torsion, mais également le mécanisme de serrure contre les tentatives d'effraction par perçage au travers de la porte, et cela, bien que la saillie du cylindre par rapport à la porte puisse être différente d'une porte à l'autre , et en tenant compte de ce que le cylindre de la serrure peut être choisi dans une gamme de cylindres de longueurs standard échelonnées d'un pas constant qui, aux normes européennes, est de 5 mm. Conformément à cette demande de brevet, le dispositif de protection comprend une contre-plaque extérieure à évidement fixée contre la porte, ledit évidement contenant un organe de protection de la tête du cylindre et des cales de réglage d'épaisseur, qui sont disposées d'un côté et/ou de l'autre d'une collerette de l'organe afin de compenser, sur la valeur d'un pas d'allongement des cylindres choisis dans une gamme, toute variation de la distance sur laquelle la tête de cylindre est en saillie vers l'extérieur de la porte.The applicant company has already proposed a solution in its French Patent Application No. 85-09087 filed June 14, 1985 to achieve a protection device that protects not only the cylinder against burglary attempts by tearing and / or torsion, but also the lock mechanism against attempts to break in by drilling through the door, and this, although the projection of the cylinder relative to the door may be different from one door to another, and in taking into account that the cylinder of the lock can be chosen from a range of cylinders of standard lengths staggered with a constant pitch which, according to European standards, is 5 mm. In accordance with this patent application, the protection device comprises an outer recess plate with a recess fixed against the door, said recess containing a member for protecting the head of the cylinder and shims for adjusting the thickness, which are arranged one side and / or the other of a flange of the member in order to compensate, on the value of an elongation step of the cylinders chosen in a range, any variation in the distance over which the cylinder head is protruding outward from the door.

Ce dispositif donne satisfaction du point de vue de la résistance à l'agression. Toutefois, la société déposante a souhaité trouver une autre solution, qui soit encore plus facile à mettre en oeuvre et qui présente un prix de revient plus réduit. Conformément à cette seconde solution, on prévoit de monter des moyens élastiques entre la contre-plaque et l'organe de protection, ces moyens élastiques absorbant les variations de saillie de la tête de cylindre par rapport à la porte.This device is satisfactory from the point of view of resistance to aggression. However, the applicant company wished to find another solution, which is even easier to implement and which presents a lower cost price. In accordance with this second solution, provision is made to mount elastic means between the counterplate and the protection member, these elastic means absorbing the variations in projection of the cylinder head relative to the door.

La présente invention a pour objet le produit industriel nouveau que constitue un dispositif de protection d'un cylindre profilé, pour serrure de porte, ce cylindre comportant une tête destinée à faire saillie sur la face externe de la porte suivant une longueur qui peut varier, notamment selon la longueur du cylindre, l'épaisseur de la porte, ou la position du cylindre par rapport à la porte, ce dispositif de protection comprenant :
- une contre-plaque extérieure, destinée à être maintenue appliquée par une face d'appui contre au moins une zone de la face externe de la porte , qui s'étend en regard de la serrure et autour de la tête du cylindre, cette contre-plaque étant traversée par un orifice qui débouche dans la face externe de ladite contre-plaque,
- un organe de protection du cylindre comportant un corps tubulaire destiné à entourer la tête du cylindre et à être engagé, avec un jeu réduit, dans l'orifice de la contre-plaque, le corps tubulaire étant partiellement fermé, à son extrémité axiale destinée à faire saillie à l'extérieur de la contre-plaque, par un disque radial percé d'un orifice limitant l'accès vers l'ouverture d'introduction de la clé, cet organe de protection étant monté coulissant dans ladite contre-plaque, caractérisé par le fait que des moyens élastiques sont prévus entre la contre-plaque et l'organe de protection, ces moyens élastiques ayant tendance à rappeler l'organe de protection vers la porte, l'ensemble étant tel que le coulissement autorisé par les moyens élastiques entre l'organe de protection et la contre-plaque permet d'absorber des variations de saillie de la tête de cylindre par rapport à la porte.The subject of the present invention is the new industrial product which constitutes a device for protecting a profiled cylinder, for a door lock, this cylinder comprising a head intended to protrude from the external face of the door along a length which may vary, in particular according to the length of the cylinder, the thickness of the door, or the position of the cylinder relative to the door, this protective device comprising:
- an outer counter plate, intended to be kept applied by a bearing face against at least one zone of the outer face of the door, which extends opposite the lock and around the cylinder head, this against -plate being crossed by an orifice which opens into the external face of said counter-plate,
a cylinder protection member comprising a tubular body intended to surround the cylinder head and to be engaged, with reduced clearance, in the orifice of the counterplate, the tubular body being partially closed, at its axial end intended to protrude outside the counter plate, by a radial disc pierced with an orifice limiting access to the opening for introducing the key, this protective member being slidably mounted in said counter plate, characterized by the fact that elastic means are provided between the counterplate and the protection member, these elastic means tending to return the protection member towards the door, the assembly being such that the sliding authorized by the means elastic between the protection member and the counter plate allows variations in the projection of the cylinder head relative to the door to be absorbed.

On peut avantageusement faire en sorte que les moyens élastiques et le montage de l'organe de protection sur la contre-plaque soient tels que la course possible entre l'organe de protection et la contre-plaque ait une amplitude au moins égale à la différence de longueur entre deux cylindres de tailles immédiatement voisines.We can advantageously make sure that the elastic means and the mounting of the protective member on the counterplate are such that the possible stroke between the protective member and the counterplate has an amplitude at least equal to the difference in length between two cylinders of sizes immediately neighbors.

Les moyens élastiques sont formés notamment par des moyens propres à travailler en compression, prenant appui, à une extrémité, contre la face interne de la contre-plaque et, à une autre extrémité, contre un organe de butée lié à l'organe de protection. En particulier, cet organe de butée est constitué par une plaque d'appui rendue solidaire de l'organe de protection.The elastic means are formed in particular by means suitable for working in compression, bearing, at one end, against the internal face of the counter-plate and, at another end, against a stop member linked to the protection member . In particular, this stop member is constituted by a support plate made integral with the protection member.

Conformément à un premier mode de réalisation particulier de la présente invention, l'organe de protection comporte une tête de plus fort diamètre propre à faire saillie sur la face externe de la contre-plaque, suivie d'un manchon de plus faible diamètre propre à faire saillie au-delà de la face interne de la contre-plaque, dans un logement ménagé dans la porte, l'épaulement formé à la transition de la tête de l'organe de protection et du manchon étant propre à venir en appui contre un épaulement correspondant prévu dans l'orifice de la contre-plaque, sous l'effet des moyens élastiques, lorsque l'organe de protection ne subit pas d'autres sollicitations.In accordance with a first particular embodiment of the present invention, the protective member comprises a head of larger diameter capable of projecting from the external face of the counterplate, followed by a sleeve of smaller diameter suitable for protrude beyond the internal face of the counterplate, in a housing formed in the door, the shoulder formed at the transition of the head of the protection member and of the sleeve being adapted to come into abutment against a corresponding shoulder provided in the orifice of the counter-plate, under the effect of the elastic means, when the protection member is not subjected to other stresses.

Selon ce premier mode de réalisation, les moyens élastiques peuvent être constitués par un ressort hélicoïdal entourant l'organe de protection.According to this first embodiment, the elastic means can be constituted by a helical spring surrounding the protection member.

Selon une variante de réalisation avantageuse, la plaque d'appui, fixée contre la face de l'organe de protection voisine de la porte, est située dans un logement de la contre-plaque, des moyens de liaison étant prévus entre la plaque d'appui et la contre-plaque pour autoriser un coulissement de la plaque et de l'ensemble de protection suivant une direction parallèle aux génératrices du cylindre profilé, les moyens de liaison comportant en outre des moyens de butée pour limiter le mouvement de la plaque d'appui.According to an advantageous alternative embodiment, the support plate, fixed against the face of the protective member adjacent to the door, is located in a housing of the counter-plate, connection means being provided between the plate. support and counter plate to allow sliding of the plate and the protective assembly in a direction parallel to the generatrices of the profiled cylinder, the connecting means further comprising stop means for limiting the movement of the plate support.

Les moyens élastiques peuvent être formés par des ressorts de pression régulièrement répartis autour de l'organe de protection.The elastic means can be formed by pressure springs regularly distributed around the protection member.

Le contour de la plaque d'appui ou, dans le cas du premier mode de réalisation, le contour de l'organe de protection, peut présenter au moins un méplat propre à coopérer avec un méplat correspondant prévu dans le logement de la contre-plaque.The contour of the support plate or, in the case of the first embodiment, the contour of the protection member, may have at least one flat suitable for cooperating with a corresponding flat provided in the housing of the counter-plate. .

Dans le cas d'un dispositif de protection dans lequel l'organe de protection comprend une rondelle de protection propre à venir s'appliquer sur l'entrée de clé prévue dans le cylindre, on peut prévoir qu'un fourreau soit disposé à l'intérieur de l'organe de protection pour retenir la rondelle, ce fourreau venant entourer le cylindre profilé de la serrure.In the case of a protection device in which the protection member comprises a clean protection washer to be applied to the key entry provided in the cylinder, provision may be made for a sheath to be disposed at the inside of the protective member for retaining the washer, this sheath surrounding the profiled cylinder of the lock.

L'invention est également relative à une serrure équipée d'un dispositif de protection tel que défini précédemment.The invention also relates to a lock equipped with a protection device as defined above.

Pour mieux faire comprendre l'objet de la présente invention, on va décrire maintenant, à titre d'exemple purement illustratif et non limitatif, un mode de réalisation représenté sur les dessins annexés.To better understand the object of the present invention, there will now be described, by way of purely illustrative and nonlimiting example, an embodiment shown in the accompanying drawings.

Sur ces dessins :

  • - la figure 1 est une vue en coupe verticale et transversale d'un dispositif de protection selon l'invention, monté sur une porte équipée d'une serrure à larder, le cylindre étant représenté en élévation dans un but de simplification du dessin ;
  • - les figures 2 et 3 sont des vues analogues à la partie de la figure 1 correspondant à la zone du cylindre, afin d'illustrer le dispositif de la présente invention dans le cas de deux autres distances différentes de la saillie du cylindre par rapport à une porte ;
  • - la figure 4 montre, semblablement à la figure 1, une variante de réalisation avantageuse du dispositif de protection selon l'invention ;
  • - les figures 5 et 6, enfin, sont des vues analogues à la partie de la figure 4 correspondant à la zone du cylindre, destinées à illustrer le cas de deux autres distances différentes de la saillie du cylindre par rapport à une porte.
In these drawings:
  • - Figure 1 is a vertical and cross-sectional view of a protection device according to the invention, mounted on a door equipped with a mortise lock, the cylinder being shown in elevation for the purpose of simplifying the drawing;
  • - Figures 2 and 3 are views similar to the part of Figure 1 corresponding to the cylinder area, to illustrate the device of the present invention in the case of two other different distances from the projection of the cylinder relative to a door ;
  • - Figure 4 shows, similarly to Figure 1, an advantageous alternative embodiment of the protection device according to the invention;
  • - Figures 5 and 6, finally, are views similar to the part of Figure 4 corresponding to the cylinder area, intended to illustrate the case of two other different distances from the projection of the cylinder relative to a door.

Si l'on se réfère à la figure 1, on voit que l'on a désigné par 1, une porte comportant une mortaise 2 destinée à recevoir une serrure à larder, dont le mécanisme d'ensemble n'est pas représenté, et qui comprend, à sa partie inférieure, un cylindre 3, qui est un cylindre double profilé, choisi, en fonction de l'épaisseur de la porte à équiper, dans une gamme de cylindres dont les longueurs standard s'échelonnent de 5 en 5 mm. Le cylindre 3 comporte, si on le considère dans sa position de montage, une partie supérieure 3 a, de forme cylindrique de révolution d'axe perpendiculaire au plan moyen de la porte 1, et une partie inférieure 3 b, présentant une forme d'ensemble de parallépipède rectangle aplati, se raccordant radialement à la partie 3 a par l'une de ses parois allongées de plus petite largeur, la paroi allongée opposée étant arrondie.If we refer to Figure 1, we see that we have designated by 1, a door having a mortise 2 intended to receive a mortise lock, the overall mechanism of which is not shown, and which includes, at its lower part, a cylinder 3, which is a double profiled cylinder, chosen, depending on the thickness of the door to be fitted, in a range of cylinders whose standard lengths range from 5 to 5 mm. The cylinder 3 comprises, if one considers it in its mounting position, an upper part 3 a , of cylindrical shape of revolution with an axis perpendicular to the mean plane of the door 1, and a lower part 3 b , having a form of set of flattened rectangular parallelepiped, connecting radially to part 3 a by one of its elongated walls of smaller width, the opposite elongated wall being rounded.

Le cylindre 3 est monté dans un perçage 1 a qui traverse la porte 1 dans son épaisseur, et sa partie centrale présente une encoche transversale 4 formée sur toute la section de la partie supérieure 3 a et se prolongeant dans la partie inférieure 3 b. Par un positionnement axial convenable du cylindre 3 par rapport à la porte 1, l'encoche s'ouvre dans la mortaise de la porte 1, dans laquelle sont logés le mécanisme de serrure dit "demi-tour", pour la commande du pêne, et le mécanisme de serrure associé pour le verrouillage du pêne dans une gâche montée dans le chambranle, mécanismes qui ne sont pas représentés.The cylinder 3 is mounted in a bore 1 a which passes through the door 1 in its thickness, and its central part has a transverse notch 4 formed over the entire section of the upper part 3 a and extending into the lower part 3 b . By a suitable axial positioning of the cylinder 3 relative to the door 1, the notch opens in the mortise of the door 1, in which are housed the so-called "half-turn" lock mechanism, for controlling the bolt, and the associated lock mechanism for locking the bolt in a keeper mounted in the frame, mechanisms which are not shown.

Dans cette position du cylindre 3, la tête de cylindre 5, qui présente une ouverture d'introduction de la clé dans sa face d'extrémité, est en saillie sur une certaine distance l1 (figure 1) à l'extérieur de la face externe 9 de la porte 1. Un panneton 6, passant dans l'encoche 4 et déplacé en rotation dans celle-ci par la manoeuvre de l a clé dans le cylindre 3, actionne les mécanismes non représentés de la serrure, afin de manoeuvrer le pêne. Comme la structure interne du cylindre 3, les mécanismes de la serrure, le pêne et la gâche sont des organes bien connus, il n'apparaît pas utile de les décrire davantage, ni de les représenter.In this position of the cylinder 3, the cylinder head 5, which has an opening for introducing the key in its end face, protrudes over a certain distance l 1 (FIG. 1) outside the face external 9 of door 1. A bit 6, passing through the notch 4 and moved in rotation therein by the operation of the key in the cylinder 3, actuates the not shown mechanisms of the lock, in order to operate the bolt. As the internal structure of cylinder 3, the mechanisms of the lock, the bolt and the strike are well known organs, it does not appear useful to describe them further, nor to represent them.

Le dispositif de protection comprend une contre-plaque extérieure 7, de forme rectangulaire à sommets arrondis, qui est accolée par une face d'appui ou interne 8 contre la face externe 9, et qui recouvre une zone de cette face 9 qui s'étend non seulement en regard de la serrure et du cylindre 3, mais également au-delà de la projection horizontale de la silhouette de la serrure sur la face externe 9 de la porte, vers le haut et vers le bas, comme cela est visible sur la figure 1. La largeur de la contre-plaque 7 est telle que le grand côté le plus proche du chant de la porte 1 soit au plus près du bord de la zone de recouvrement de la face externe de la porte par une partie externe du chambranle et directement contigu au chambranle, afin d'empêcher l'introduction d'un pied de biche entre la porte 1 et le chambranle.The protection device comprises an outer counter plate 7, of rectangular shape with rounded tops, which is joined by a bearing or internal face 8 against the external face 9, and which covers an area of this face 9 which extends not only facing the lock and the cylinder 3, but also beyond the horizontal projection of the silhouette of the lock on the external face 9 of the door, upwards and downwards, as can be seen on the Figure 1. The width of the counter plate 7 is such that the long side closest to the edge of the door 1 is as close as possible to the edge of the zone of overlap of the external face of the door by an external part of the jamb and directly adjacent to the door frame, in order to prevent the introduction of a crowbar between door 1 and the door frame.

Dans une région de la contre-plaque 7 située au voisinage de sa bordure inférieure, si on la considère en position assemblée sur la porte 1, est pratiqué un orifice 10 qui la traverse de part en part et qui débouche dans sa face externe 11. Cet orifice est délimité par une paroi cylindrique de révolution 12 adjacente à ladite face externe 11 et d'axe perpendiculaire au plan moyen de la contre-plaque 7, et par une paroi 13 adjacente à la face d'appui 8. La paroi 13 présente une forme d'ensemble cylindrique d'axe confondu avec celui de la paroi 12 mais de diamètre inférieur à celui de cette dernière et comportant par ailleurs deux méplats, diamétralement opposés, disposés parallèlement aux bordures verticales de la contre-plaque 7, les deux parois 12 et 13 étant réunies par un épaulement 14.In a region of the counterplate 7 located in the vicinity of its lower edge, if it is considered in the assembled position on the door 1, an orifice 10 is made which passes right through it and which opens into its external face 11. This orifice is delimited by a cylindrical wall of revolution 12 adjacent to said external face 11 and of axis perpendicular to the mean plane of the counterplate 7, and by a wall 13 adjacent to the bearing face 8. The wall 13 has a form of cylindrical assembly with an axis coincident with that of the wall 12 but of diameter smaller than that of the latter and further comprising two flats, diametrically opposite, arranged parallel to the vertical edges of the counter plate 7, the two walls 12 and 13 being joined by a shoulder 14.

Le perçage 1 a pratiqué dans la porte 1 pour le passage du cylindre 3 comprend, dans sa région voisine de la face externe 9 de la porte, un évidement cylindrique de révolution 1 b. L'axe de la paroi 12, en position montée de la contre-plaque 7, est confondu avec celui de l'évidement 1 b.The bore 1a in the door 1 for the passage of the cylinder 3 comprises, in its region adjacent to the outer face 9 of the door, a cylindrical recess of revolution 1b. The axis of the wall 12, in the mounted position of the counter plate 7, coincides with that of the recess 1 b .

A proximité de chacun de ses quatre sommets, la face d'appui 8 de la contre-plaque 7 comporte un petit lamage circulaire 15, et une borne cylindrique 16 est soudée à la contre-plaque 7, au fond de chaque lamage 15, de sorte que les bornes 16 s'étendent perpendiculairement à la face d'appui 8 et en saillie par rapport à celle-ci. Les bornes 16 présentent chacune un alésage taraudé 17 qui s'ouvre dans leur face d'extrémité libre, et elles se terminent par un embout tronconique 18 facilitant leur engagement dans des perçages 19 traversant la porte 1 dans son épaisseur et logeant lesdites bornes 16.Near each of its four vertices, the bearing face 8 of the counter plate 7 has a small circular counterbore 15, and a cylindrical terminal 16 is welded to the counter plate 7, at the bottom of each counterbore 15, of so that the terminals 16 extend perpendicularly to the support face 8 and projecting therefrom. The terminals 16 each have a threaded bore 17 which opens in their free end face, and they end in a frustoconical end piece 18 facilitating their engagement in holes 19 passing through the door 1 in its thickness and housing said terminals 16.

La contre-plaque 7 et les bornes 16 sont réalisées en un acier qui a subi un traitement du type carbonitruration ou similaire, afin de présenter une dureté superficielle élevée.The counterplate 7 and the terminals 16 are made of a steel which has undergone a treatment of the carbonitriding or similar type, in order to have a high surface hardness.

L'ancrage de la contre-plaque 7 à la porte 1 est assuré à l'aide d'une plaque intérieure 20 et de quatre vis à tête fraisée 21. La plaque intérieure 20 a une forme rectangulaire de mêmes dimensions que la contre-plaque 7, et elle est percée d'un orifice 22 de passage du cylindre 3 (dont la face d'extrémité du côté interne de la porte présente également une ouverture d'introduction de la clé pour le verrouillage de l'intérieur), d'un orifice 23 de passage d'un axe de poignée de manoeuvre de la serrure 2 depuis l'intérieur, et de quatre trous de passage des vis 21, servant de logements aux têtes de ces vis, lorsque leurs corps filetés sont vissés dans les alésages taraudés des bornes 16, et assurent la retenue de la contre-plaque 7.The counter plate 7 is anchored to the door 1 using an inner plate 20 and four countersunk screws 21. The inner plate 20 has a rectangular shape of the same dimensions as the counter plate 7, and it is pierced with an orifice 22 for passage of the cylinder 3 (the end face of the internal side of the door also has an opening for introducing the key for locking from the inside), an orifice 23 for the passage of an axis of the handle for operating the lock 2 from the inside, and four holes for the passage of the screws 21, serving as housings for the heads of these screws, when their threaded bodies are screwed into the bores threaded terminals 16, and ensure the retention of the counter plate 7.

La plaque intérieure 20 porte, en saillie sur sa face d'appui par laquelle est est appliquée contre la face interne 24 de la porte 1, deux écrous, tels que 25 (figure 1) qui se logent cha cun dans un petit évidement creusé dans la face interne 24 de la porte 1, et dans lesquels sont vissées des vis 26 de fixation d'une plaque porte-béquille intérieure 27, dont la poignée béquille 28 a son axe qui passe par l'orifice 23 pour entrer dans la serrure.The inner plate 20 carries, projecting from its support face by which is applied against the internal face 24 of the door 1, two nuts, such as 25 (FIG. 1) which are housed each in a small recess dug in the internal face 24 of the door 1, and in which are screwed screws 26 for fixing an inner crutch support plate 27, whose crutch handle 28 has its axis which passes through the orifice 23 to enter the lock.

Le dispositif de protection de ladite serrure comprend également un organe de protection 29 du cylindre 3. Cet organe 29, en acier traité pour résister aux chocs et au perçage, comporte un corps tubulaire 30 dont une extrémité axiale est fermée par un disque radial 31 d'une épaisseur sensiblement plus grande que celle du corps 30.The device for protecting said lock also comprises a member 29 for protecting the cylinder 3. This member 29, made of steel treated to resist impact and drilling, comprises a tubular body 30, one axial end of which is closed by a radial disc 31 d 'a thickness substantially greater than that of the body 30.

La paroi interne du corps 30 est parallèle à la surface externe du cylindre profilé 3 ; quant à sa paroi externe, elle est cylindrique de révolution dans sa partie 30 a (ou tête) adjacente au disque 31 (en correspondance avec la paroi cylindrique 12) et de forme cylindrique de plus petit diamêtre avec deux méplats diamétralement opposés, dans la partie restance 30 b (ou manchon), en correspondance avec la paroi 13. Ces deux parties 30 a, 30 b sont réunies par un épaulement 29 a, qui peut venir en butée contre l'épaulement 14 décrit ci-dessus.The internal wall of the body 30 is parallel to the external surface of the profiled cylinder 3; as for its external wall, it is cylindrical of revolution in its part 30 a (or head) adjacent to the disc 31 (in correspondence with the cylindrical wall 12) and of cylindrical shape of smaller diameter with two diametrically opposed flats, in the part restance 30 b (or sleeve), in correspondence with the wall 13. These two parts 30 a , 30 b are joined by a shoulder 29 a , which can come into abutment against the shoulder 14 described above.

Le corps 30 est engagé avec un jeu réduit dans l'orifice 10 de la contre-plaque 7 et il fait saillie hors de la face d'appui 8 de cette dernière, le disque radial 31 faisant saillie hors de la face externe 11 de ladite contre-plaque 7 afin de protéger la tête 5 du cylindre 3. La paroi latérale 31 a externe de ce disque radial 31 est légèrement chanfreinée.The body 30 is engaged with a reduced clearance in the orifice 10 of the counter plate 7 and it projects out of the bearing face 8 of the latter, the radial disc 31 projecting out of the external face 11 of said against the plate 7 in order to protect the head 5 of the cylinder 3. the outer side wall 31a of the radial disk 31 is slightly chamfered.

Le manchon 30 b de plus petit diamètre que la tête 30 a fait saillie dans l'évidement 1 b de la porte 1.The sleeve 30 b of smaller diameter than the head 30a protrudes into the recess 1b of the door 1.

Par ailleurs, le disque radial 31 est percé d'une ouverture circulaire excentrée 32, formant une ouverture de passage de la clé vers l'ouverture d'introduction dans le cylindre 3, lorsque l'organe de protection 29 est monté sur la tête 5 dudit cylindre 3.Furthermore, the radial disc 31 is pierced with an eccentric circular opening 32, forming an opening for the passage of the key towards the opening for introduction into the cylinder 3, when the protective member 29 is mounted on the head 5 of said cylinder 3.

Le dispositif de protection de la serrure comprend également une rondelle 33, réalisée en acier spécial comme l'organe de protection 29, et qui est montée libre en rotation dans l'ouverture circulaire du disque 31. Cette rondelle 33 est une rondelle épaulée retenue axialement vers l'extérieur par son épaulement 34 contre un épaulement de forme complémentaire présenté par le disque 31 et délimitant l'ouverture excentrée de ce dernier. La rondelle 33 ne laisse apparaître l'ouverture d'introduction de la clé dans la tête 5 du cylindre 3 que lorsqu'elle occupe une position particulière en rotation dans le corps tubulaire 30. De plus, la rondelle 33 présente, sur sa face interne lorsqu'elle est considérée dans sa position de montage, une courte jupe périphérique 35 destinée à venir se placer autour de la saillie 36 hors de la partie 3 a du cylindre proprement dit 3, saillie que constitue un barillet portant le panneton 6 et monté rotatif dans cette partie 3 a du cylindre 3.The lock protection device also comprises a washer 33, made of special steel like the protection member 29, and which is mounted to rotate freely in the circular opening of the disc 31. This washer 33 is a shouldered washer retained axially outwardly by its shoulder 34 against a shoulder of complementary shape presented by the disc 31 and delimiting the eccentric opening of the latter. The washer 33 reveals the opening for introducing the key in the head 5 of the cylinder 3 only when it occupies a particular position in rotation in the tubular body 30. In addition, the washer 33 has, on its internal face when considered in its mounting position, a short peripheral skirt 35 intended to be placed around the projection 36 out of the part 3a of the cylinder 3 itself, projection that constitutes a barrel carrying the blade 6 and rotatably mounted in this part 3a of the cylinder 3.

L'organe de protection 29 est complété par un fourreau 37 dont la section transversale interne épouse le contour du cylindre profilé 3, et qui vient se loger dans l'espace intàrieur du corps 30 en étant appliqué contre la paroi interne de celui-ci ; ses surfaces intérieure et extérieure sont de dimensions telles qu'elles viennent entourer le cylindre 3 et le maintenir en position correcte par rapport à l'organe 29 et à la rondelle associée 33 au moment de l'assemblage du dispositif de protection. De plus, il assure la retenue de la rondelle précitée 33 en venant en appui contre la jupe 35 de cette rondelle. Sa longueur est telle qu'en position de montage, sa bordure située à l'opposé de la rondelle 33 se situe dans le même plan que la bordure correspondante du corps 30.The protective member 29 is completed by a sheath 37 whose internal cross section follows the contour of the profiled cylinder 3, and which is housed in the interior space of the body 30 by being applied against the internal wall of the latter; its interior and exterior surfaces are of such dimensions that they surround the cylinder 3 and maintain it in the correct position relative to the member 29 and to the associated washer 33 when the protection device is assembled. In addition, it ensures the retention of the aforementioned washer 33 by coming to bear against the skirt 35 of this washer. Its length is such that in the mounting position, its edge located opposite the washer 33 is in the same plane as the corresponding edge of the body 30.

Le dispositif de protection de la serrure comprend enfin une plaque 38 ayant la forme d'un disque présentant une perforation centrale pour le passage du cylindre 3 et vena nt en appui contre les deux bordures situées dans le même plan du fourreau 37 et du corps 30, ladite plaque 38 étant fixée à ce dernier par quatre vis 39.The lock protection device finally comprises a plate 38 having the shape of a disc having a central perforation for the passage of the cylinder 3 and comes to bear against the two edges situated in the same plane of the sleeve 37 and of the body 30, said plate 38 being fixed to the latter by four screws 39.

En plus de sa fonction d'emprisonner le fourreau 37, la plaque 38 sert d'appui à une extrémité d'un ressort 40 hélicoïdal qui entoure le corps 30 et dont l'autre extrémité vient, en position de montage du dispositif de protection, en appui contre la paroi interne de la contre-plaque 7 bordant l'orifice 10. Pour assurer sa fonction d'appui du ressort 40, la plaque 38 s'étend, à sa périphérie, au-delà du corps 30.In addition to its function of trapping the sheath 37, the plate 38 serves to support one end of a helical spring 40 which surrounds the body 30 and the other end of which comes, in the mounting position of the protection device, bearing against the internal wall of the counter-plate 7 bordering the orifice 10. To perform its function of supporting the spring 40, the plate 38 extends, at its periphery, beyond the body 30.

L'assemblage du dispositif de protection qui vient d'être décrit peut être réalisé de façon très simple. On engage l'organe 29 dans l'orifice 10 de la contre-plaque 7 jusqu'à ce que les épaulements 14 et 29 a viennent en appui l'un contre l'autre. On engage la rondelle 33 dans l'ouverture 32 du disque radial 31 de l'organe 29, puis on introduit le fourreau 37, on dispose le ressort hélicoïdal 40 autour du corps 30 de l'organe 29 et on vient apposer la plaque d'appui 38, que l'on fixe à l'aide des vis 39 sur le corps 30 précité.The assembly of the protection device which has just been described can be carried out very simply. The member 29 is engaged in the orifice 10 of the counter-plate 7 until the shoulders 14 and 29 a come to bear against one another. The washer 33 is engaged in the opening 32 of the radial disc 31 of the member 29, then the sheath 37 is introduced, the helical spring 40 is placed around the body 30 of the member 29 and the plate is affixed. support 38, which is fixed using the screws 39 on the aforementioned body 30.

Au moment de la pose du dispositif sur la porte 1, on choisit un cylindre 3 dans une gamme de cylindres de longueurs standard échelonnées d'un pas de 5 mm, ce choix étant effectué compte tenu de l'épaisseur de la porte 1 à équiper et de la position du plan médian de la serrure, et donc de la mortaise 2, par rapport à la face externe 9 de cette porte.When installing the device on door 1, a cylinder 3 is chosen from a range of cylinders of standard lengths staggered with a pitch of 5 mm, this choice being made taking into account the thickness of door 1 to be fitted and of the position of the median plane of the lock, and therefore of the mortise 2, with respect to the external face 9 of this door.

On met en place le cylindre 3 dans la porte, à travers le perçage 1 a, en coopération avec la serrure. Selon la configuration représentée sur la figure 1, la tête 5 du cylindre 3 fait saillie sur une distance l1 par rapport à la face externe 9 de la porte.The cylinder 3 is placed in the door, through the bore 1 a , in cooperation with the lock. According to the configuration shown in Figure 1, the head 5 of the cylinder 3 protrudes over a distance l 1 relative to the outer face 9 of the door.

On procède alors au montage du dispositif de protection constitué par l'ensemble de la contre-plaque 7, de l'organe 29, de la rondelle 33, du fourreau 37, de la plaque d'appui 38 et du ressort 40.We then proceed with the mounting of the protection device constituted by the assembly of the counter-plate 7, of the member 29, of the washer 33, of the sleeve 37, of the plate support 38 and spring 40.

Pour cela, on engage la plaque d'appui 38 et le fourreau 37 sur la tête 5. On fait colisser le dispositif de protection, sur le cylindre 3, parallèlement aux génératrices du cylindre jusqu'à ce que la jupe 35 vienne en butée axiale contre la tête 5. Le manchon 30 b se trouve alors engagé dans l'évidement 1 b et la plaque 38, tout en étant au voisinage du fond de l'évidement, en reste écartée légèrement suivant la direction axiale.To do this, the support plate 38 and the sheath 37 are engaged on the head 5. The protective device is made to colisse on the cylinder 3, parallel to the generatrices of the cylinder until the skirt 35 comes into axial abutment against the head 5. The sleeve 30b is then engaged in the recess 1b and the plate 38, while being in the vicinity of the bottom of the recess, remains slightly apart in the axial direction.

On procède alors à la fixation de la contre-plaque 7, à l'aide des vis 21 de manière à amener la face 8 de la contre-plaque 7 en appui contre la face 9 de la porte.We then proceed to the fixing of the counter-plate 7, using the screws 21 so as to bring the face 8 of the counter-plate 7 to bear against the face 9 of the door.

Au cours du vissage des vis 21, le ressort 40 va être plus ou moins comprimé car l'épaulement 14 va plus ou moins s'écarter de l'épaulement 29 a, selon la saillie de la tête 5, par rapport à la face 9. Cette compression du ressort 40 et le coulissement de la contre-plaque 7 par rapport à l'organe 29 permettent d'absorber les variations de la longueur l1 de saillie inférieures à un pas.During the screwing of the screws 21, the spring 40 will be more or less compressed because the shoulder 14 will more or less move away from the shoulder 29 a , depending on the projection of the head 5, relative to the face 9 This compression of the spring 40 and the sliding of the counter-plate 7 relative to the member 29 make it possible to absorb variations in the length l 1 of projection less than one step.

Sur la figure 1, on a représenté une configuration suivant laquelle, en position montée, l'épaulement 14 de la contre-plaque 7 et l'épaulement 29 a du corps 30 sont pratiquement en appui l'un contre l'autre, la compression du ressort 40 n'ayant pas été modifiée sensiblement lors du montage.In FIG. 1, a configuration is shown according to which, in the mounted position, the shoulder 14 of the counterplate 7 and the shoulder 29 a of the body 30 are practically in abutment against one another, the compression of the spring 40 which has not been substantially modified during assembly.

En revanche, sur la figure 2, on a représenté une configuration dans laquelle la longueur l2 de la saillie que forme le cylindre 3 hors de la porte 1 est supérieure à la longueur correspondante l1 de la configuration de la fiugre 1 ; dans ces conditions, le ressort 40 se trouve davantage comprimé que dans le cas précédent.On the other hand, in FIG. 2, a configuration is shown in which the length l 2 of the projection formed by the cylinder 3 outside the door 1 is greater than the corresponding length l 1 of the configuration of the fugre 1; under these conditions, the spring 40 is more compressed than in the previous case.

Sur la figure 3, on a représenté une configuration pour laquelle la longueur de la saillie l3 est supérieure à l2, ce qui conduit à une compression maximale du ressort 40. Si la saillie devait présenter une longueur encore supérieure à l3, il faudrait que le monteur choisisse un cylindre 3 d'une longueur inférieure d'un pas (5 mm dans l'exemple considéré).In FIG. 3, a configuration is shown for which the length of the projection l 3 is greater than l 2, which leads to maximum compression of the spring 40. If the projection should have a length still greater than l 3, it the editor should choose a cylinder 3 with a shorter length of one step (5 mm in the example considered).

En se reportant aux figures 4 à 6, on peut voir une variante de réalisation avantageuse du dispositif de l'invention. Cette variante permet d'éviter, dans la porte, l'évidement 1 b des figures 1 à 3, évidement qui peut provoquer un affaiblissement de la porte.Referring to Figures 4 to 6, we can see an advantageous alternative embodiment of the device of the invention. This variant makes it possible to avoid, in the door, the recess 1b in FIGS. 1 to 3, a recess which can cause the door to weaken.

Les éléments de la variante des figures 4 à 6 identiques ou jouant des rôles analogues à des éléments déjà décrits à propos des figures 1 à 3 sont désignés ou bien par les mêmes références numériques, ou bien par des références numériques égales à la somme du nombre 100 et de la référence utilisée à propos des figures 1 à 3.The elements of the variant of FIGS. 4 to 6 identical or playing roles analogous to elements already described in connection with FIGS. 1 to 3 are designated either by the same numerical references, or else by numerical references equal to the sum of the number 100 and the reference used in connection with FIGS. 1 to 3.

La face extérieure 9 de la porte 1 ne comporte aucun évidement ou embrèvement autour de l'ouverture extérieure du perçage 1 a prévu pour le passage du cylindre 3.The outer face 9 of the door 1 does not include any recess or recess around the external opening of the bore 1 has provided for the passage of the cylinder 3.

L'organe de protection 129, en acier traité, est essentiellement constitué par la partie cylindrique de révolution 130 a (ou tête) adjacente au disque 31. Cet organe de protection 129 ne comporte pas, du côté de la porte, un prolongement de plus faible diamètre semblable au prolongement 30 b des figures 1 à 3, et ne fait pas saillie au delà de la face d'appui 8 de la contre-plaque.The protection member 129, made of treated steel, is essentially constituted by the cylindrical part of revolution 130 a (or head) adjacent to the disc 31. This protection member 129 does not have, on the door side, an extension of more small diameter similar to the extension 30b of Figures 1 to 3, and does not protrude beyond the bearing face 8 of the counter plate.

La plaque d'appui 138 est fixée, contre la face de l'organe de protection 129 voisine de la porte 1, par l'intermédiaire des vis 39, par exemple au nombre de quatre régulièrement réparties suivant la circonférence. Cette plaque de maintien 138 a un contour circulaire avec deux méplats, de préférence diamètralement opposés, propres à coopérer avec des méplats correspondants prévus dans un logement 41 ménagé dans la contre-plaque 7 et s'ouvrant du côté de la porte. Le contour interne de ce logement 41 épouse celui de la plaque 138 ; la coopération des méplats assure un blocage en rotation de la plaque 138 par rapport à la contre-plaque 7, tout en autorisant un déplacement en translation de cette plaque suivant une direction orthogonale au plan moyen de la contre-plaque 7. L'orifice débouche dans le logement 41.The support plate 138 is fixed, against the face of the protective member 129 adjacent to the door 1, by means of the screws 39, for example four in number evenly distributed along the circumference. This retaining plate 138 has a circular contour with two flats, preferably diametrically opposite, adapted to cooperate with corresponding flats provided in a housing 41 formed in the counter plate 7 and opening on the side of the door. The internal contour of this housing 41 matches that of the plate 138; the cooperation of the flats ensures a blocking in rotation of the plate 138 relative to the counter plate 7, while allowing a displacement in translation of this plate in a direction orthogonal to the mean plane of the counter plate 7. The orifice opens into the housing 41.

L'organe de protection 129 et la plaque 138 peuvent ainsi coulisser, par rapport à la contre-plaque 7, suivant la susdite direction orthogonale au plan moyen de la contre-plaque.The protective member 129 and the plate 138 can thus slide, relative to the counter plate 7, in the above-mentioned direction orthogonal to the mean plane of the counter plate.

La plaque 138 est maintenue sur la contre-plaque 7 à l'aide de moyens de liaison 42, notamment formés par des vis ou des clous. Ces moyens de liaison 42 comportent des moyens de butée 43, notamment formés par une tête, propres à limiter le mouvement de la plaque 138 du côté opposé à la rondelle 33. De préférence, les moyens de liaison 42 et leur moyens de butée 43 sont agencés de telle sorte que la face extérieure de la plaque 138, lorsque cette dernière est en butée contre 43 et éloignée au maximum de la rondelle 33, se trouve dans le plan de la face interne 8 de la contre-plaque 7, cette face interne étant destinée à venir en appui contre la face 9 de la porte 1. Lorsque la plaque 138 occupe cette position, un jeu j (figure 4), permettant de compenser des variations de longueur possibles de la saillie du cylindre 3, par rapport à la face 9, existe entre le fond du logement 41 et la face en regard de la plaque 138.The plate 138 is held on the counter plate 7 by means of connection means 42, in particular formed by screws or nails. These connection means 42 comprise stop means 43, in particular formed by a head, capable of limiting the movement of the plate 138 on the side opposite to the washer 33. Preferably, the connection means 42 and their stop means 43 are arranged in such a way that the external face of the plate 138, when the latter is in abutment against 43 and at the most distant from the washer 33, lies in the plane of the internal face 8 of the counter plate 7, this internal face being intended to come into abutment against the face 9 of the door 1. When the plate 138 occupies this position, a clearance j (FIG. 4), making it possible to compensate for possible length variations of the projection of the cylinder 3, relative to the face 9, exists between the bottom of the housing 41 and the opposite face of the plate 138.

Les moyens de liaison 42, par exemple au nombre de quatre régulièrement répartis, sont prévus pour autoriser un coulissement de la plaque 138, et de l'ensemble de protection comprenant l'organe 129, suivant une direction parallèle aux génératrices du cylindre profilé 3.The connecting means 42, for example four regularly distributed, are provided to allow sliding of the plate 138, and of the protective assembly comprising the member 129, in a direction parallel to the generatrices of the profiled cylinder 3.

Des ressorts de pression 44, régulièrement répartis autour de l'organe 129, par exemple au nombre de quatre, sont prévus entre la face interne de la plaque 138 et la contre-plaque 7 qui comporte, de préférence, un trou borgne 45, en correspondance avec chaque ressort 44, pour servir de logement à une partie de ce ressort. Les ressorts de compression 44, prisonniers entre la plaque de maintien et la contre-plaque, permettent de rappeler l'organe de protection 129 contre l'extrémité du cylindre 3.Pressure springs 44, regularly distributed around the member 129, for example four in number, are provided between the internal face of the plate 138 and the counter plate 7 which preferably comprises a blind hole 45, in correspondence with each spring 44, to serve as housing for part of this spring. The compression springs 44, trapped between the retaining plate and the counterplate, make it possible to recall the protection 129 against the end of the cylinder 3.

La pose d'une serrure et d'un dispositif de protection conforme à celui représenté sur la figure 4 s'effectue de la même manière qu'expliqué précédemment.The fitting of a lock and of a protection device in accordance with that shown in FIG. 4 is carried out in the same manner as explained previously.

Compte tenu de l'épaisseur de la porte et de la position du plan médian de la serrure par rapport à la face externe 9 de la porte, on choisit la longueur du cylindre 3 qui convient dans la gamme échelonnée de 5 en 5 mm.Taking into account the thickness of the door and the position of the median plane of the lock with respect to the external face 9 of the door, the length of the cylinder 3 is chosen which is suitable in the staggered range from 5 to 5 mm.

On pose ensuite le cylindre dans la serrure et on effectue le montage de la contre-plaque 7, avec l'ensemble de protection assemblé. Cet ensemble de protection comprend l'organe 129, la rondelle 33, le fourreau 137 et la plaque d'appui 138.The cylinder is then placed in the lock and the counter-plate 7 is assembled, with the protection assembly assembled. This protection assembly includes the member 129, the washer 33, the sleeve 137 and the support plate 138.

Le serrage des vis 21 de contre-plaque 7 va provoquer la compression des ressorts 44 dès que l'organe de protection sera en appui contre la face avant du cylindre 3.The tightening of the screws 21 against the plate 7 will cause the compression of the springs 44 as soon as the protective member bears against the front face of the cylinder 3.

Sur la figure 4, on a représenté une configuration pour laquelle, en position montée, la plaque 138 est en butée contre les têtes 43 des moyens de liaison 42, et est adjacente à la face 9 de la porte. Pour un tel cas de figure, la compression des ressorts 44, existant avant la pose de la ocntre-plaque 7, n'a pas été modifiée lors de la pose et du serrage des vis 21In Figure 4, there is shown a configuration for which, in the mounted position, the plate 138 abuts against the heads 43 of the connecting means 42, and is adjacent to the face 9 of the door. For such a scenario, the compression of the springs 44, existing before the fitting of the plate 7, was not modified during the fitting and tightening of the screws 21

La figure 5 illustre une configuration dans laquelle la longueur l2 de saillie est supérieure à la longueur l1 de la figure 4. Les ressorts 44 se trouvent davantage comprimés et la plaque 138 est légèrement écartée de la face extérieure 9 de la porte.Figure 5 illustrates a configuration in which the length l 2 of projection is greater than the length l 1 of Figure 4. The springs 44 are more compressed and the plate 138 is slightly spaced from the outer face 9 of the door.

La figure 6 illustre une configuration pour laquelle la longueur de la saillie l3 est supérieure à l2 (figure 5) et correspond à une compression maximale du ressort 44. La plaque 138 est en appui contre le fond du logement 41. Si la saillie devait présenter une longueur supérieure à l3, le monteur devrait alors choisir un cylindre 3 d'une longueur inférieure d'un pas (5 mm dans l'exemple considéré).FIG. 6 illustrates a configuration for which the length of the projection l 3 is greater than l 2 (FIG. 5) and corresponds to maximum compression of the spring 44. The plate 138 is in abutment against the bottom of the housing 41. If the projection should have a length greater than l 3, the editor should then choose a cylinder 3 with a length less than one step (5 mm in the example considered).

Le dispositif de protection conforme à l'invention est particulièrement intéressant au niveau de la fabrication, du stockage, de la commercialisation et de la pose, du fait qu'un modèle unique permet d'assurer la quasi-totalité des cas de pose. La variante de réalisation des figures 4 à 6 permet d'assurer la pose du dispositif de protection sans embrèvement ou évidement dans la porte 1.The protection device according to the invention is particularly advantageous in terms of manufacturing, storage, marketing and installation, since a single model makes it possible to ensure almost all cases of installation. The variant embodiment of FIGS. 4 to 6 makes it possible to install the protection device without recess or recess in the door 1.

Le dispositif de protection de l'invention présente, en outre, l'avantage de ne pas comporter de main, et peut être monté sur une porte ouvrant à gauche ou à droite. Ceci complète l'intérêt de l'application d'un tel dispositif de protection à une serrure d'un genre qui permet d'assurer gauche et droite par simple retournement du 1/2 tour.The protective device of the invention also has the advantage of not having a hand, and can be mounted on a door opening to the left or to the right. This completes the advantage of applying such a protection device to a lock of a kind which makes it possible to secure left and right by simply reversing the 1/2 turn.

Il est bien entendu que les exemples de réalisation ci-dessus décrits ne sont pas limitatifs et pourront donner lieu à toute modification désirable, sans sortir pour cela du cadre de l'invention.It is understood that the embodiments described above are not limiting and may give rise to any desirable modification, without departing from the scope of the invention.

Le dispositif de protection conforme à l'invention constitue un ensemble prêt à monter et d'une mise en place extrêmement simple et rapide. The protection device according to the invention constitutes a ready-to-assemble assembly that is extremely simple and quick to install.

Claims (10)

1. Dispositif de protection d'un cylindre profilé (3), pour une serrure de porte, ce cylindre (3) comportant une tête (5) destinée à faire saillie sur la face externe (9) de la porte (1) suivant une longueur ( l1, l2, l3) qui peut varier, notamment selon la longueur du cylindre (3), l'épaisseur de la porte (1), ou la position du cylindre (3) par rapport à la porte (1), ce dispositif de protection comprenant :
- une contre-plaque extérieure (7), destinée à être maintenue appliquée par une face d'appui (8) contre au moins une zone de la face externe (9) de la porte (1), qui s'étend en regard de la serrure (2) et autour de la tête (5) du cylindre (3), cette contre-plaque (7) étant traversée par un orifice (10) qui débouche dans la face ex terne (11) de ladite contre-plaque (7) ;
- un organe de protection (29, 129) du cylindre (3) comportant un corps tubulaire (30, 130 a) destiné à entourer la tête (5) du cylindre (3) et à être engagé, avec un jeu réduit, dans l'orifice (10) de la contre-plaque (7), le corps tubulaire (30, 130 a) étant partiellement fermé, à son extrémité axiale destinée à faire saillie à l'extérieur de la contre-plaque (7), par un disque radial (31) percé d'une ouverture (32) limitant l'accès vers l'ouverture d'introduction de la clé, cet organe de protection (29, 129) étant monté coulissant dans ladite contre-plaque (7), caractérisé par le fait que des moyens élastiques (40, 44) sont prévus entre la contre-plaque (7) et l'organe de protection (29,129), ces moyens élastiques ayant tendance à rappeler l'organe de protection (29, 129) vers la porte (1), l'ensemble étant tel que le coulissement autorisé par les moens élastiques (40,44) entre l'organe de protection (29,129) et la contre-plaque (7) permet d'absorber des variations de saillie de la tête (5) du cylindre (3) par rapport à la porte (1).1. Device for protecting a profiled cylinder (3), for a door lock, this cylinder (3) comprising a head (5) intended to protrude from the external face (9) of the door (1) according to a length ( l 1, l 2, l 3) which can vary, in particular according to the length of the cylinder (3), the thickness of the door (1), or the position of the cylinder (3) relative to the door (1 ), this protection device comprising:
- an outer counter plate (7), intended to be kept applied by a bearing face (8) against at least one zone of the outer face (9) of the door (1), which extends opposite the lock (2) and around the head (5) of the cylinder (3), this counter-plate (7) being traversed by an orifice (10) which opens into the external face (11) of said counter-plate ( 7);
- a protective member (29, 129) of the cylinder (3) comprising a tubular body (30, 130 a ) intended to surround the head (5) of the cylinder (3) and to be engaged, with reduced play, in the orifice (10) against the plate (7), the tubular body (30, 130) being partially closed at its axial end intended to project outside against the plate (7), by a radial disc (31) pierced with an opening (32) limiting access to the opening for inserting the key, this protective member (29, 129) being slidably mounted in said counterplate (7), characterized by the fact that elastic means (40, 44) are provided between the counterplate (7) and the protective member (29,129), these elastic means tending to return the protective member (29, 129) towards the door (1), the assembly being such that the sliding authorized by the elastic means (40,44) between the protective member (29,129) and the counterplate (7) makes it possible to absorb variations in projection l a head (5) of the cylinder (3) relative to the door (1). 2. Dispositif selon la revendication 1, pour lequel le cylindre (3) est choisi dans une gamme de cylindres (3) de longueurs standard échelonnées d'un pas constant, caractérisé par le fait que les moyens élastiques (40,44), et le montage de l'organe de protection (29,129) sur la contre-plaque (7) sont tels que la course possible entre l'organe de protection (29,129) et la contre-plaque (7) ait une amplitude au moins égale à la différence de longueur entre deux cylindres (3) de tailles immédiatement voisines.2. Device according to claim 1, for which the cylinder (3) is chosen from a range of cylinders (3) of standard lengths staggered with a constant pitch, characterized in that the elastic means (40,44), and the mounting of the protection member ( 29,129) on the counterplate (7) are such that the possible travel between the protective member (29,129) and the counterplate (7) has an amplitude at least equal to the difference in length between two cylinders (3) of immediately adjacent sizes. 3. Dispositif selon l'une quelconque des revendications précédentes, caractérisé par le fait que les moyens élastiques (40,44) sont formés par des moyens propres à travailler en compression, prenant appui, à une extrémité, contre la face interne (8) de la contre-plaque (7) et, à une autre extrémité, contre un organe de butée (38,138) lié à l'organe de protection (29,129).3. Device according to any one of the preceding claims, characterized in that the elastic means (40,44) are formed by means suitable for working in compression, bearing, at one end, against the internal face (8) against the plate (7) and, at another end, against a stop member (38,138) linked to the protective member (29,129). 4. Dispositif selon la revendication 3, caractérisé par le fait que l'organe de butée est constitué par une plaque d'appui (38,138) rendue solidaire de l'organe de protection (29,129).4. Device according to claim 3, characterized in that the stop member is constituted by a support plate (38,138) made integral with the protective member (29,129). 5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé par le fait que l'organe de protection (29) comporte une tête (30 a) de plus fort diamètre propre à faire saillie sur la face externe (11) de la contre-plaque (7), suivie d'un manchon (30 b) de plus faible diamètre propre à faire saillie au-delà de la face interne (8) de la contre-plaque (7), dans un logement (1 b) ménagé dans la porte (1), l'épaulement (29 a) formé à la transition de la tête (30 a) de l'organe de protection (29) et du manchon (30 b) étant propre à venir en appui contre un épaulement correspondant (14) prévu dans l'orifice (10) de la contre-plaque (7), sous l'effet des moyens élastiques, lorsque l'organe de protection (29) ne subit pas d'autres sollicitations.5. Device according to any one of the preceding claims, characterized in that the protective member (29) has a head (30a) of larger diameter adapted to protrude from the outer face (11) against the -plate (7), followed by a sleeve (30 b ) of smaller diameter suitable for projecting beyond the internal face (8) of the counterplate (7), in a housing (1 b ) provided in the door (1), the shoulder (29 a ) formed at the transition of the head (30 a ) of the protective member (29) and of the sleeve (30 b ) being able to come into abutment against a shoulder corresponding (14) provided in the orifice (10) of the counterplate (7), under the effect of the elastic means, when the protective member (29) is not subjected to other stresses. 6. Dispositif selon la revendication 5, caractérisé par le fait que les moyens élastiques sont constitués par un ressort hélicoïdal (40) entourant l'organe de protection (29).6. Device according to claim 5, characterized in that the elastic means are constituted by a helical spring (40) surrounding the protection member (29). 7. Dispositif selon la revendication 4, caractérisé par le fait que la plaque d'appui (138), fixée contre la face de l'organe de protection (129) voisine de la porte, est située dans un logement (41) de la contre-plaque (7), des moyens de liaison (42) étant prévus entre la plaque d'appui et la contre-plaque pour autoriser un coulissement de la plaque et de l'ensemble de protection suivant une direction parallèle aux génératrices du cylindre profilé, les moyens de liaison (42) comportant en outre des moyens de butée (43) pour limiter le mouvement de la plaque d'appui (138).7. Device according to claim 4, characterized in that the support plate (138), fixed against the face of the protective member (129) adjacent to the door, is located in a housing (41) of the counter-plate (7), connecting means (42) being provided between the support plate and the counter-plate to allow the plate and the protective assembly to slide in a direction parallel to the generatrices of the profiled cylinder , the connecting means (42) further comprising stop means (43) for limiting the movement of the support plate (138). 8. Dispositif selon la revendication 6 ou 7, caractérisé par le fait que le contour de l'organe de protection (29, 30 b) ou de la plaque d'appui (13 8) présente au moins un méplat propre à coopérer avec un méplat correspondant prévu dans le logement (13, 41) de la contre-plaque (7).8. Device according to claim 6 or 7, characterized in that the contour of the protective member (29, 30 b ) or of the support plate (13 8) has at least one suitable flat to cooperate with a corresponding flat provided in the housing (13, 41) of the counterplate (7). 9. Dispositif selon l'une quelconque des revendications précédentes,dans lequel l'organe de protection (29,129) comprend une rondelle de protection (33) propre à venir s'appliquer sur l'entrée de clé prévue dans le cylindre (3), caractérisé par le fait qu'un fourreau (37,137) est prévu à l'intérieur de l'organe de protection pour retenir la rondelle (33), ce fourreau (37,137) venant entourer le cylindre (3) profilé de la serrure.9. Device according to any one of the preceding claims, in which the protective member (29,129) comprises a protective washer (33) suitable for being applied to the key entry provided in the cylinder (3), characterized by the fact that a sheath (37,137) is provided inside the protective member for retaining the washer (33), this sheath (37,137) coming to surround the cylinder (3) profiled with the lock. 10. Serrure à cylindre profilé, caractérisée par le fait qu'elle est équipée d'un dispositif de protection du cylindre selon l'une quelconque des revendications 1 à 9.10. Profile cylinder lock, characterized in that it is equipped with a cylinder protection device according to any one of claims 1 to 9.
EP19870402394 1986-11-07 1987-10-23 Protection for a door cylinder lock, and lock equipped therewith Expired EP0268517B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8615545A FR2606444B1 (en) 1986-11-07 1986-11-07 PROTECTIVE DEVICE OF A PROFILED CYLINDER FOR DOOR LOCK AND LOCK EQUIPPED WITH SUCH A DEVICE
FR8615545 1986-11-07

Publications (2)

Publication Number Publication Date
EP0268517A1 true EP0268517A1 (en) 1988-05-25
EP0268517B1 EP0268517B1 (en) 1989-05-31

Family

ID=9340631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870402394 Expired EP0268517B1 (en) 1986-11-07 1987-10-23 Protection for a door cylinder lock, and lock equipped therewith

Country Status (4)

Country Link
EP (1) EP0268517B1 (en)
DE (1) DE3760204D1 (en)
ES (1) ES2008701B3 (en)
FR (1) FR2606444B1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9002960U1 (en) * 1990-03-15 1990-05-17 Lo, Tsung I, Taipeh/T'ai-pei Bolt lock
GB2287749A (en) * 1994-03-19 1995-09-27 Arnold Spruce Anti-tamper device for cylinder lock
EP0787872A1 (en) * 1996-02-02 1997-08-06 Martin Beznovsky Extension disc for cylinder lock
GB2360546B (en) * 2000-03-23 2004-06-16 Fullex Ltd Improvements relating to cylinder locks
NL2009838C2 (en) * 2012-11-20 2014-05-21 Axa Stenman Nederland B V SHIELD FOR A CYLINDER LOCK.
EP2778320A3 (en) * 2013-03-14 2015-05-27 NoWay Security AB Reinforcement part for lock case

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2022303C (en) * 1990-07-30 1996-07-23 Andrzej Bartczak Bezel
DE9410913U1 (en) * 1994-07-07 1995-11-09 Niemann, Hans Dieter, 50169 Kerpen Security rosette for locking cylinders

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8609633U1 (en) * 1986-04-09 1986-05-28 Peter Metz, Homa-Beschläge GmbH & Co KG, 5620 Velbert Lock cylinder cover for door locks

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8609633U1 (en) * 1986-04-09 1986-05-28 Peter Metz, Homa-Beschläge GmbH & Co KG, 5620 Velbert Lock cylinder cover for door locks

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9002960U1 (en) * 1990-03-15 1990-05-17 Lo, Tsung I, Taipeh/T'ai-pei Bolt lock
GB2287749A (en) * 1994-03-19 1995-09-27 Arnold Spruce Anti-tamper device for cylinder lock
EP0787872A1 (en) * 1996-02-02 1997-08-06 Martin Beznovsky Extension disc for cylinder lock
GB2360546B (en) * 2000-03-23 2004-06-16 Fullex Ltd Improvements relating to cylinder locks
NL2009838C2 (en) * 2012-11-20 2014-05-21 Axa Stenman Nederland B V SHIELD FOR A CYLINDER LOCK.
EP2778320A3 (en) * 2013-03-14 2015-05-27 NoWay Security AB Reinforcement part for lock case

Also Published As

Publication number Publication date
ES2008701B3 (en) 1989-08-01
FR2606444B1 (en) 1989-02-17
EP0268517B1 (en) 1989-05-31
FR2606444A1 (en) 1988-05-13
DE3760204D1 (en) 1989-07-06

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