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EP0370893B1 - Schutzvorrichtung für Zylinderschlösser - Google Patents

Schutzvorrichtung für Zylinderschlösser Download PDF

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Publication number
EP0370893B1
EP0370893B1 EP89403204A EP89403204A EP0370893B1 EP 0370893 B1 EP0370893 B1 EP 0370893B1 EP 89403204 A EP89403204 A EP 89403204A EP 89403204 A EP89403204 A EP 89403204A EP 0370893 B1 EP0370893 B1 EP 0370893B1
Authority
EP
European Patent Office
Prior art keywords
door
plate
cylinder
disc
housing
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.)
Expired - Lifetime
Application number
EP89403204A
Other languages
English (en)
French (fr)
Other versions
EP0370893A1 (de
Inventor
Pierre Robert Paul Fredon
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.)
CAVERS Ets
Original Assignee
CAVERS Ets
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 CAVERS Ets filed Critical CAVERS Ets
Priority to AT89403204T priority Critical patent/ATE103030T1/de
Publication of EP0370893A1 publication Critical patent/EP0370893A1/de
Application granted granted Critical
Publication of EP0370893B1 publication Critical patent/EP0370893B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/16—Use of special materials for parts of locks
    • E05B15/1614—Use of special materials for parts of locks of hard materials, to prevent drilling
    • 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
    • E05B15/16—Use of special materials for parts of locks
    • E05B15/1614—Use of special materials for parts of locks of hard materials, to prevent drilling
    • E05B2015/1628—Free-rotating protecting covers or discs

Definitions

  • the present invention relates to a protection device for a cylinder lock mechanism and, more particularly, to such a device designed to adapt to such existing mechanisms, without modification thereof.
  • Cylinder lock mechanisms such as locks, in particular those fixed on entry doors to residential premises, are frequently subjected to attack by burglars.
  • These locks ordinarily comprise a cylinder or barrel passing through the door and fixed by screws or other fixing means on a support plate inside the housing of the lock mechanism.
  • burglars commonly use the process which consists in blowing up the cylinder by shearing or tearing off the fixing screws, so as to be able to access the latch mechanism.
  • the necessary shearing or tearing is obtained, for example, by applying a torque to the cylinder using pliers. This process can only be used if the cylinder protrudes sufficiently from the surface of the door.
  • a second method consists in forcibly introducing a member screwing into the hole of the cylinder to wedge this member in this hole and then applying an axial tensile force to the cylinder, by means of this member, to break and / or tear off the screws. fixing the cylinder.
  • a third method consists in tearing off the bolt by applying axial percussion on the cylinder.
  • a fourth method of aggression consists in attacking the bolt by drilling the cylinder or the organs of the lock.
  • a lock has been designed, the projecting cylinder of which is covered with a reinforced fixed ring, a washer closing the end of the ring, facing the free end of the cylinder.
  • the washer is pierced with a slot for the passage of the lock key and it is coupled in rotation to the rotating part of the cylinder by a stud so that a key passed through the slot of the washer and into the hole in the cylinder. can turn. If we now try to force the lock by inserting a screw member into the slot in the washer, the torque applied by the screw member shears the stud at the end of its travel of the rotating part of the cylinder.
  • the washer then turns mad in the fixed ring and it is not possible to engage with the cylinder or to apply axial traction to it, like a corkscrew. However, it is still possible to shear the cylinder fixing screws by axial percussion of the latter.
  • Document US-A-3,083,563 also discloses a lock protection device placed behind a door to be protected and comprising a washer which, under the effect of percussion, is applied against the end of a lock cylinder secured to a plate fixed to the door by bolts. The impact forces are thus transmitted to the door by the heads of these bolts, the surface of which is small, which does not allow effective resistance to these impact forces to be ensured.
  • Document CH-A-667 689 is also known, having served as a basis for the preamble of claim 1, a protective assembly for cylinder lock passing through a door, using a rotating part covering the projecting end. of the cylinder. It is possible to block this piece by axial percussion which allows to attack then the lock by drilling.
  • the present invention therefore aims to provide a protection device for cylinder lock mechanism which is adaptable to any existing mechanism, without modification thereof.
  • the present invention also aims to achieve such a device designed to withstand the attacks to which the cylinder lock mechanisms are subjected, and in particular to the four types of attack mentioned above.
  • a protection device for a cylinder lock mechanism arranged to pass through a door on which the mechanism is mounted comprising a plate designed to be fixed. on the door so as to protect the free end of the cylinder which opens from one face of the door, a disc-shaped part pierced with an opening for the passage of a key and rotatably mounted in a housing formed in the thickness of the plate opposite the free end of the cylinder, this housing opening on the face of the plate which rests on the door, the bottom of the housing being pierced to allow the insertion of the key of the mechanism in the cylinder, through the opening of the part, characterized in that the diameter of the disc-shaped part is greater than that of the cylinder and in that this part is freely flush with the surface of the plate which is turn e towards the door, so as to increase the surface according to which percussive forces applied to the workpiece (2) are transmitted to the door.
  • the device comprises at least one counterplate inserted between the plate and the door to fill the projection of the cylinder on the door.
  • this plate is hollowed out with a recess designed to receive a protective plate, the latter being flush with the surface of the plate which faces the door.
  • the device which essentially comprises a plate 1 of generally rectangular shape in the embodiment shown, and a part 2 which, preferably, follows the shape a disc pierced with an opening 15 in the form of a diametrical slot or any other form allowing the insertion of a key.
  • the device consisting of the plate 1 and the disc 2 is designed to be mounted on one face of a door 3 equipped with a cylinder lock mechanism such as a lock, the housing of which is schematically represented in 4, with its bolt 5 and its control button 5 ′, on the other face of the door.
  • a cylinder 6 projects from the housing 4 to pass through the door.
  • the base 7 of the cylinder is fixed by screws or other fixing means on a support plate (not shown) inside the housing of the lock 4. It is these fixing means that must be protected from attack by burglars which act on the cylinder 6 to break them by applying shearing and / or tearing forces to them.
  • the plate 1 made for example of cast iron or of hardened and / or case-hardened steel so as to have a high surface hardness resistant to burglars' tools, has two square holes 8, 9 which cooperate with two bolts 10, 11 to blocking heads complementary to these holes, for fixing the plate to the door 3. Bores 8 ′, 9 ′ hollowed out in the plate 1 concentrically with the holes 8, 9 and in addition to the heads of the bolts prevent the engagement of a tool between the head and the plate.
  • one or more counterplates 12 can be inserted between the plate 1 and the door 3 to catch up with the projection of the cylinder 6, on the face 13 of the door 3 opposite to that which receives the housing of the lock.
  • the hole drilled in the counterplate for the passage of the cylinder may advantageously be of smaller area than that of the disc 2 placed opposite, to reinforce the resistance to sinking by percussion of the cylinder.
  • a housing 14 is formed in the thickness of the plate 1, to receive the disc 2 in rotation.
  • the plate 1 is mounted on the door 3 in a position such that the axis of the disc 2 is substantially collinear with that of the rotating part of the cylinder 6.
  • the housing 14 is circular, of diameter and thickness conforming to those of the disc, so that the latter can rotate freely in this housing. This free rotation is improved if the disc bears on the counterplate 12, as indicated above.
  • the bottom of the housing 14 is pierced with a flared hole 16 which gives access to the slot 15 of the disc 2, from the external surface of the plate 1.
  • a key can be introduced into the cylinder 6, through the hole 16 and the slot 15 of the disc 2.
  • the diameter of the disc 2 is substantially greater than that of the cylinder. Thanks to this arrangement, the resistance to axial percussion forces applied along the axis of arrow F is improved by the fact that these forces are collected by an area equal to that of the disc 2, much greater than that of the cross section of the cylinder 6.
  • the hole 16, circular, is flared outward to facilitate the insertion of the key into the cylinder, through the slot 15 of the disc 2 which is applied to the end of the cylinder where the key is to be inserted.
  • the increased surface of the disc 2 gives the assembly better resistance to axial percussion, and therefore to tearing and / or shearing forces.
  • the disc 2 which turns crazy, prevents the insertion and blocking in the cylinder of a screwing tool.
  • the tool hangs in the slot 15 of the disc and rotates with it without being able to catch on the cylinder. Any axial traction on the cylinder using such a tool is then prohibited.
  • the device according to the invention successfully opposes the four main attacks mentioned in the preamble.
  • this result is achieved with means (plate 1, disc 2, bolts 10, 11) which can be mounted on any commercially available cylinder lock mechanism already installed without any disassembly, adaptation or other modification of it.
  • This protection device thus has a universal character.
  • the device according to the invention can also be incorporated in a lock mechanism provided with means designed to cooperate with this device, such as for example support plates projecting from the mechanism housing and pierced with holes for the passage of bolts 10, 11. Such support plates strengthen the solidity of the structure.
  • the plate 1 can also be pierced with a hole for the passage of a square for the bolt control handle.
  • the manufacture of the slotted disc 2 can be facilitated by making and mounting in the housing 14 two symmetrical half-discs indented on a diameter and reconstituting the disc 2 together, each half-disc conforming to half of the disc 2 which is on one side or the other of the plane of symmetry of the diametral slot drilled in this disc.
  • the plate 1 can be dimensioned so as to have a sufficient surface to fully protect the latch placed to the right of this plate, on the other face of the door. It can be dressed with a hood or other decorative covering.
  • FIG. 3 a variant of the device according to the invention.
  • the same reference numeral designates identical or similar elements or members.
  • the device of FIG. 3 essentially differs from the device of FIGS. 1 and 2 by the presence of a protective plate 17 housed in a recess 18 formed in the face of the plate 1 which comes opposite the door 3.
  • the protective plate is flush with the surface of the plate 1 and comes to bear on the counterplate 12 possibly inserted to absorb the projection of the cylinder 6 on the face 13 of the door.
  • the protective plate 17 can then cooperate itself with the absorption of this projection, as shown in FIG. 3.
  • the protective plate 17 is substantially coextensive with the plate 1. It is made of a very hard special manganese steel, such as a Z 120 M12 steel, so as to protect the attack latch 4 by drilling. It also strengthens the door 3 by increasing the surface thereof which collects a percussion force possibly applied to the disc 2 during an attack. The resistance of the assembly is thereby improved.
  • the plate 1 of the embodiment of Figure 3 has internally threaded sockets 19, 19 'designed to complement each other in holes drilled in the door.
  • the device is then fixed on this using bolts 20, 20 ′ passing through holes 21, 21 ′ respectively, from the inside of the door to be screwed into the sockets 19, 19 ′ of plate 1.
  • the head of the bolts being accessible only from inside the room closed by the door, the security of the device according to the invention is reinforced.
  • the disc 2 could rotate in the housing 14 with a clearance making it possible to adapt the device to errors in centering the holes to be made in the door for fixing the device.
  • such a play causes vibrations of the disc in the event of attack thereof with the drill, vibrations which make the attack more difficult.
  • the lock can be mounted on a support plate which s then applies against the inside of the door.
  • the straight slot 15 of the disc 2 could also be replaced by a hole of different shape, circular for example, to adapt to non-flat keys.
  • the invention is not limited to the embodiments described and shown which have been given only by way of example. On the contrary, it extends to any cylinder lock mechanism equipped with means designed to cooperate with the device according to the invention, the mechanism / device assembly then constituting a whole.

Landscapes

  • Lock And Its Accessories (AREA)
  • Fluid-Damping Devices (AREA)
  • Soil Working Implements (AREA)
  • Actuator (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Claims (11)

  1. Schutzvorrichtung für Schließzylindermechanismen zum Hindurchgehen durch eine Tür, auf der der Mechanismus befestigt wird, wobei die Vorrichtung folgendes aufweist: eine Platte (1), die so auf der Tür befestigt werden kann, daß die das freie äußere Ende des Zylinders schützt, das von einer Seite der Tür vorsteht, ein Stück (2) in Form einer Scheibe mit einer Öffnung (15) zum Durchlaß eines Schlüssels und zur Drehung in einer Aufnahme (14) angebracht, welche in der Dicke der Platte (1) gebildet ist, und zwar gegenüber dem freien äußeren Ende des Zylinders (6), wobei diese Aufnahme zu der Seite der Platte (1) hin offen ist, die an der Tür anliegt, wobei der Boden der Aufnahme durchbohrt ist, um das Einführen des Schlüssels des Mechanismus in den Zylinder durch die Öffnung (15) des Stücks (2) zu ermöglichen, dadurch gekennzeichnet, daß der Durchmesser des Stücks (2) in Form einer Scheibe größer ist als der des Zylinders und daß dieses Stück mit der Oberfläche des Platte, die zur Tür gewandt ist, frei ausfluchtet bzw. glatt abschließt, um die Oberfläche zu vergrößern, über die die Auswirkungen der Stöße, die auf das Stück (2) angewendet werden, auf die Tür übertragen werden.
  2. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß die Vorrichtung mindestens eine Gegenplatte (12) aufweist, die zwischen der Platte (1) und der Tür (3) eingesetzt ist, um den Vorsprung des Zylinders auf der Tür auszugleichen.
  3. Vorrichtung gemäß Anspruch 2, dadurch gekennzeichnet, daß die Gegenplatte (12) mit einer Öffnung durchbohrt ist, die eine Oberfläche aufweist, die kleiner ist als die Oberfläche des Stücks (2) liegt, und zwar gegenüber von dieser.
  4. Vorrichtung gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Boden der Aufnahme (14) mit einem Loch (16) durchbohrt ist, das zur Außenoberfläche der Platte (1) abgeschrägt ist.
  5. Vorrichtung gemäß einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Vorrichtung eine Schutzplatte (17) aufweist, die in einer Ausnehmung (18) der Platte (1) liegt, wobei diese Schutzplatte (17) mit der Oberfläche der Platte (1) ausfluchtet, die der Tür zugewandt ist.
  6. Vorrichtung gemäß einem der vorhergehenden Anspüche, dadurch gekennzeichnet, daß Schrauben (10, 11) mit blockierenden Köpfen die Platte (1) auf der Tür (3) befestigen.
  7. Vorrichtung gemäß einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Platte (1) mit Steckbuchsen (19, 19') ausgestattet ist zum Eindringen in komplementäre Löcher in der Tür, wobei Schrauben (20, 20') von der Innenseite der Tür aus durch diese hindurchgehen, um in die Stechbuchsen geschraubt zu werden, so daß die Vorrichtung an der Tür befestigt wird.
  8. Vorrichtung gemäß Anspruch 7, dadurch gekennzeichnet, daß Verstärkungsstücke an den Böden der Steckbuchsen plaziert werden.
  9. Vorrichtung gemäß einem der vorhergehenden Anspüche, dadurch gekennzeichnet, daß das Stück (2) in Form einer Scheibe sich in der Aufnahme (14) mit einem vorbestimmten Spiel dreht.
  10. Vorrichtung gemäß einem der vorhergehenden Anspüche, dadurch gekennzeichnet, daß die Öffnung (15), die in die Scheibe (2) gebohrt ist, hinsichtlich eines Durchmessers symmetrisch ist, und dadurch, daß diese Scheibe aus zwei halben Scheiben besteht, die in bezug auf diesen Durchmesser symmetrisch sind.
  11. Schließzylindermechanismus, der eine Schutzvorrichtung gemäß einem der vorhergehenden Ansprüche aufweist.
EP89403204A 1988-11-23 1989-11-21 Schutzvorrichtung für Zylinderschlösser Expired - Lifetime EP0370893B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89403204T ATE103030T1 (de) 1988-11-23 1989-11-21 Schutzvorrichtung fuer zylinderschloesser.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8815248A FR2639394B1 (fr) 1988-11-23 1988-11-23 Dispositif de protection pour mecanisme de serrure a cylindre
FR8815248 1988-11-23

Publications (2)

Publication Number Publication Date
EP0370893A1 EP0370893A1 (de) 1990-05-30
EP0370893B1 true EP0370893B1 (de) 1994-03-16

Family

ID=9372143

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89403204A Expired - Lifetime EP0370893B1 (de) 1988-11-23 1989-11-21 Schutzvorrichtung für Zylinderschlösser

Country Status (4)

Country Link
EP (1) EP0370893B1 (de)
AT (1) ATE103030T1 (de)
DE (1) DE68913918T2 (de)
FR (1) FR2639394B1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996002719A1 (en) * 1994-07-19 1996-02-01 Norman Axford A locking bracket
GB2462387B (en) * 2005-04-21 2010-03-17 Surelock Mcgill Ltd Lock assembly
WO2010049458A1 (en) * 2008-10-30 2010-05-06 Datakammaren Ab Device for protection against manipulation of a lock
BE1020046A3 (fr) * 2011-07-01 2013-04-02 Metal Quartz Sa Systeme de protection pour porte blindee.
CN103061607A (zh) * 2013-02-17 2013-04-24 李理 一种用于家用门板的门锁保护面板

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3083563A (en) * 1961-12-07 1963-04-02 Greenwald Associaltes Comprisi Theft proof lock assembly for coin operated machines
US3550411A (en) * 1968-06-13 1970-12-29 Schlage Lock Co Lock protecting mechanism
US4316371A (en) * 1980-01-18 1982-02-23 Fichet-Bauche High safety bolt control devices
US4530223A (en) * 1982-11-01 1985-07-23 Medeco Security Locks, Inc. Guard for key cylinder
DE8508267U1 (de) * 1985-03-20 1985-06-13 Peter Metz, Homa-Beschläge GmbH & Co KG, 5620 Velbert Türbeschlag
DE8712272U1 (de) * 1987-09-10 1987-11-19 Zeiss Ikon Ag, 7000 Stuttgart Schloßschutzvorrichtung
CH667689A5 (en) * 1988-02-08 1988-10-31 Abst Anlage Bauten Sicherheits Security device for protecting door lock - is fixed disc fitting round lock cylinder, concealed by cup shaped disc rotated by key
DE8808897U1 (de) * 1988-07-11 1988-08-25 August Börkey Nachf. GmbH, 5820 Gevelsberg Schließzylinder mit Aufbohrschutz

Also Published As

Publication number Publication date
ATE103030T1 (de) 1994-04-15
DE68913918T2 (de) 1994-06-30
DE68913918D1 (de) 1994-04-21
FR2639394A1 (fr) 1990-05-25
EP0370893A1 (de) 1990-05-30
FR2639394B1 (fr) 1995-06-23

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