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EP2894279A1 - Sicherheitsvorrichtung für Schließzylinder - Google Patents

Sicherheitsvorrichtung für Schließzylinder Download PDF

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Publication number
EP2894279A1
EP2894279A1 EP14382005.8A EP14382005A EP2894279A1 EP 2894279 A1 EP2894279 A1 EP 2894279A1 EP 14382005 A EP14382005 A EP 14382005A EP 2894279 A1 EP2894279 A1 EP 2894279A1
Authority
EP
European Patent Office
Prior art keywords
security element
recess
security
fitted
radial prolongation
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.)
Withdrawn
Application number
EP14382005.8A
Other languages
English (en)
French (fr)
Inventor
Ricardo Beitia Molina
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.)
Metalurgica Cerrajera de Mondragon SA
Original Assignee
Metalurgica Cerrajera de Mondragon 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 Metalurgica Cerrajera de Mondragon SA filed Critical Metalurgica Cerrajera de Mondragon SA
Priority to EP14382005.8A priority Critical patent/EP2894279A1/de
Publication of EP2894279A1 publication Critical patent/EP2894279A1/de
Withdrawn legal-status Critical Current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
    • E05B9/00—Lock casings or latch-mechanism casings ; Fastening locks or fasteners or parts thereof to the wing
    • E05B9/04—Casings of cylinder locks
    • E05B9/048—Stator reinforcements

Definitions

  • the present invention relates to a security device for lock cylinders applicable in the locksmith industry, and more specifically in the field of locks for doors or accesses, which allows increasing the resistance of the lock given that the weakened central area of the cylinder body where the cam is located is reinforced, which makes breaking it by hitting, bending or pulling on it more difficult, and even in the event that the lock is forced open by breaking the cylinder in said central area, the lock is protected to prevent the immediate removal of the cylinder whereby unauthorized accesses to a specific enclosure are prevented in any case, all this by means of a simple, easy-to-assemble and low cost solution.
  • Today cylinder bodies for locks also known as cylinders, are known to consist of a cylindrical body from which a radial prolongation emerges in the lower portion thereof, such that both the cylindrical body and part of the radial prolongation are affected by an inner cavity in which a cam is housed, such that the cavity splits the cylinder into two portions, one portion corresponding with the outside of the door and another inner portion corresponding with the inside of the door.
  • the cam In the closed lock position, the cam projects from the transverse contour of the cylinder body, whereas in the open position, the cam remains within the contour of the cylinder body.
  • said central area is weakened in response to actions performed to force open the lock.
  • At least one of the ends of the cylindrical body of such locks has an opening, usually known as keyhole, for introducing a key to operate the lock, for going from the closed position to the open position and vice versa.
  • a plurality of locking tumblers or any other locking means, each of which is operated by means of a spring is in turn housed in the radial prolongation, where said locking tumblers collaborate with the corrugated profile or ridges of the corresponding key.
  • the cylinder body is usually longer than the door width, so once assembled the ends thereof project slightly from the two inner and outer faces of the door, having the drawback that any thief can act on the projecting end with a tool capable of producing a torque, impact or bending force on the cylinder, thus causing it to break at the weakened central area or cavity. Once broken, the cylinder body or half of the broken cylinder body is removed simply by pulling for the purpose of acting on the rotary cam for driving the mechanism to open the door and access the enclosure.
  • a so-called protective shield which also has decorative purposes, is provided for protecting the portion projecting from the cylinder.
  • Some solutions are based exclusively on preventing removal, without offering reinforcement to the weakened central area, such as for example the slot envisaged for fitting on a flange located in the shield described in GB-2434403-A .
  • the main drawback of this device is that in a situation to force open the lock, it is not effective once the shield is successfully removed; it is always easier to remove the shield of the lock than to remove the cylinder body. Once the shield is removed, the device does not prevent breaking the cylinder body.
  • solutions described in the preceding paragraph include the solution described in the Spanish invention patent no. ES-2197745-B1 which describes an anti-removal cylinder body for a lock comprising a plurality of linear filiform elements, where each filiform element fits in a specific groove provided for that purpose and the ends thereof are inserted in a pair of holes that must be made previously in the cylinder body, such that each filiform element acts as a reinforcement in a single direction.
  • the drawbacks of this solution include the need to make a plurality of grooves and holes in specific positions in the cylinder body itself, with the cost that it entails, in addition to the assembly difficulty due to the need to arrange a plurality of independent security elements in a plurality of holes and grooves that must be made in the radial prolongation, with the subsequent weakening of the cylinder body that it entails, as it has a plurality of drill holes and grooves in different positions, weakening the resistance thereof.
  • the fact that a plurality of security elements must be arranged translates into the assembly having lower resistance, since for the assembly to achieve a specific resistance value it is necessary to provide all the elements, or at least as many elements as the number of directions to be reinforced, such that forgetting or failing to place only one of said elements according to a direction results in said direction not having reinforcement, whereby in response to an action in which a thief tries to move the cylinder in different directions, he/she will finally break it since it will not be reinforced in all directions.
  • the present invention relates to a security device for lock cylinders which allows reinforcing the inner area of the cylinder body, i.e., area which is located in correspondence with the inner cavity, against any of the common methods to force open a lock, i.e., by hitting, bending and pulling on it.
  • a security element links both areas of the cylinder body separated by said cavity, whereby the removal of the cylinder body is prevented even in the event that said body has been intentionally broken from the outside in order to access the interior of the corresponding home or enclosure, which is extremely difficult as indicated in the preceding paragraph. Given its simplicity, the device is highly reliable.
  • the device proposed by the invention comprises a cylinder body which is formed by a cylindrical body from which a radial prolongation comprising two side faces and a lower area extends along the entire length of its generatrix.
  • the cylindrical body is in turn split by an inner or central cavity splitting it into two portions, one portion corresponding with the outer face of the door and the other portion with the inner face.
  • the cavity partially affects the radial prolongation without reaching the lower area thereof, there being in the radial prolongation, in correspondence with the inner cavity, a mechanically weakened central area, such that said central area is indeed weakened in response to any act of vandalism.
  • the security device comprises a security element having a U-shaped laminar configuration, being able to be inserted by pressure and fitted in a slot- or cavity-like recess which the side faces have, partially affecting said faces, and the lower area of the radial prolongation has, not necessarily along the entire length thereof, but rather a specific area surrounding the weakened central area.
  • the security element runs along the weakened central area of the radial prolongation, where the configuration of the security element corresponds with the configuration of the recess.
  • the invention clearly reinforces the cylinder in the weakest portion thereof, considerably improving its resistance against being hit, bent and pulled on, while at the same time prevents, or at least greatly complicates, the removal of the cylinder in the event that the cylinder of the lock ends up being broken in the weakest portion thereof with ill intention.
  • the security element comprises a pair of lobes at each end, where each lobe has an end hole intended for housing a lug projecting from the recess of the radial prolongation, such that when the security element is fitted in the recess, each lug is housed in an end hole of the security element.
  • the weakened central area usually has a threaded hole for fixing to a door.
  • the security element comprising two central holes that face the ends of the threaded hole when the security element is fitted in the recess is contemplated, the security element, the lock cylinder and the door thus being completely fixed and linked together, which makes forcing open the lock even more difficult, increasing the effectiveness of the device.
  • the possibility that the security element does not project from the side faces and from the lower area of the radial prolongation when it is fitted in the recess is contemplated, whereby better integration and protection of the security element are achieved.
  • the security element is coupled by pressure in the cylinder, i.e., it is pushed against the cylinder, it opens as it is being applied on the radial prolongation and closes when it coincides with the recess having the same geometry
  • the security device for lock cylinders proposed by the invention comprises a cylinder body which is formed by a cylindrical body (1) from which a hollow radial prolongation (2) comprising two side faces (2') and a lower curved area (2") extends along the entire length of its generatrix.
  • the cylindrical body (1) is split by the inner or central cavity (3) partially affecting the radial prolongation (2) without reaching the lower area (2") thereof, there being in the radial prolongation (2), in correspondence with the inner cavity (3), a mechanically weakened area (5).
  • Said weakened central area (5) is formed as a solid central attachment section having a small width and a threaded hole (11) for fixing to the door by means of the corresponding screw, such that said central area (5) is to some extent weakened in response to any act of vandalism.
  • a rotary cam (4) through which a plurality of teeth (9) which are housed inside the radial prolongation (2) is operated in closing and opening by means of the corresponding key, when it is introduced in the openings made for such purpose located at the ends (8) of the cylinder body, specifically in a rotor (10) which can rotate with respect to said cylinder body when operated by the key.
  • the security device comprises a security element having a U-shaped laminar configuration, being able to be inserted by pressure and fitted in a recess (7) which the side faces (2') and the lower area (2") of the radial prolongation (2) have.
  • the security element (6) runs along the weakened central area (5) of the radial prolongation (2), where the configuration of the security element (6) corresponds with the configuration of the recess (7).
  • the security element (6) comprises a pair of lobes (6') at each end, where each lobe (6') has an end hole (6") intended for housing a lug (7') projecting from the recess (7) of the radial prolongation, such that when the security element (6) is fitted in the recess (7), each lug (7') is housed in an end hole (6" of the security element.
  • the lugs (7') preferably have a beveled edge to facilitate the operation of inserting the security element (6) in the recess (7).
  • the weakened central area (5) usually has a threaded hole (11) for fixing to a door.
  • the security element (6) comprising two central holes (6"') that face the ends of the threaded hole (11) when the security element (6) is fitted in the recess (7) is contemplated, the security element, the lock cylinder and the door thus being completely fixed and linked together, which makes forcing open the lock even more difficult, increasing the effectiveness of the device.
  • the security element (6) preferably does not project from the side faces (2') and from the lower area (2") of the radial prolongation (2) when it is fitted in the recess (7), whereby better integration and protection of the security element are achieved.
  • the security element is coupled by pressure in the cylinder, i.e., it is pushed against the cylinder, it opens as it envelopes the radial prolongation and closes when it coincides with the recess having the same geometry.
  • the security element (6) is therefore perfectly integrated in the structure of the cylinder body which makes the removal of the cylinder from its positioning in the corresponding lock difficult even if the cylinder is intentionally broken, with respect to its central area (5), acting as highly reliable security elements. In such situation, the security element (6) keeps both portions of the cylinder body linked and attached to one another through the central area (5), acting as an attachment element to prevent removal if it breaks. Additionally, though unnecessary, fixing the security element (6) by means of central holes (6") on the radial prolongation (2) of the cylinder body is contemplated, although it is preferably assembled by pressure.
  • the security element (6) is symmetrical with respect to a longitudinal plane splitting the radial prolongation (2) into two equal halves and passing through the axis of the cylindrical body (1), taking the position of the security element (6) when it is fitted in the recess (7) as reference.
  • the security element (6) is symmetrical with respect to a plane transverse to the axis of the cylindrical body (1) passing through half of the inner cavity (3), taking the position of the security element (6) when it is fitted in the recess (7) as reference.
  • the security element (6) may or may not be symmetrical with respect to a plane transverse to the axis of the cylindrical body (1) passing through half of the inner cavity (3), taking the position of the security element (6) when it is fitted in the recess (7) as reference. Symmetry or asymmetry depends on the length of the outer and inner portions of the cylinder, which are not always of the same length.
  • the security element (6) is not symmetrical with respect to a plane transverse to the axis of the cylindrical body (1), taking the position of the security element (6) when it is fitted in the recess (7) as reference.
  • the security element (6) preferably has a flexible clip configuration and consists of a U-shaped steel sheet.
  • the security element thus performs the function of a spring acting like a highly elastic clip that is coupled by pressure on the cylinder.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Burglar Alarm Systems (AREA)
EP14382005.8A 2014-01-09 2014-01-09 Sicherheitsvorrichtung für Schließzylinder Withdrawn EP2894279A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14382005.8A EP2894279A1 (de) 2014-01-09 2014-01-09 Sicherheitsvorrichtung für Schließzylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14382005.8A EP2894279A1 (de) 2014-01-09 2014-01-09 Sicherheitsvorrichtung für Schließzylinder

Publications (1)

Publication Number Publication Date
EP2894279A1 true EP2894279A1 (de) 2015-07-15

Family

ID=50289608

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14382005.8A Withdrawn EP2894279A1 (de) 2014-01-09 2014-01-09 Sicherheitsvorrichtung für Schließzylinder

Country Status (1)

Country Link
EP (1) EP2894279A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202019102154U1 (de) * 2019-04-15 2020-07-16 C.Ed. Schulte Gesellschaft mit beschränkter Haftung Zylinderschlossfabrik Modulartig aufgebauter Schließzylinder
WO2020217040A1 (en) 2019-04-24 2020-10-29 Spark Technology Engineering Ltd Cylinder lock with improved strength

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8804080U1 (de) * 1988-03-25 1988-11-10 Krachten, Theodor, 4400 Münster Profilzylinder
DE8716645U1 (de) * 1987-12-17 1989-05-03 Melchert Beschläge GmbH & Co KG, 5628 Heiligenhaus Profil-Schließzylinder
DE19744065A1 (de) 1996-11-12 1998-05-14 Wilka Schliestechnik Gmbh Doppel-Profilschließzylinder
GB2372535B (en) 2002-06-29 2003-04-16 Security Products Uk Ltd Lock
GB2375795B (en) 2001-05-25 2004-12-29 Fullex Ltd Cylinder locks
ES2197745B1 (es) 2001-03-12 2005-03-16 Jose Antonio Ledesma Lozano Cuerpo de bombillo antiextraccion para cerradura.
EP1707710A1 (de) 2005-03-30 2006-10-04 KALE Kilit ve Kalip Sanayi A.S. Nicht zerstörbares Zylinderschloss
US20070163315A1 (en) * 2006-01-17 2007-07-19 Zhen-Lin Yang Door lock having reinforced strength
GB2434403A (en) 2006-01-24 2007-07-25 Select Engineering Asia Cylinder lock reinforcement arrangements
EP2128359A1 (de) 2008-05-28 2009-12-02 Kaba GmbH Abbruchsicherer Doppelschließzylinder
GB2494737A (en) 2011-07-05 2013-03-20 Gtv Locking Systems Uk Ltd A lock mechanism with bridging and/or guard member

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8716645U1 (de) * 1987-12-17 1989-05-03 Melchert Beschläge GmbH & Co KG, 5628 Heiligenhaus Profil-Schließzylinder
DE8804080U1 (de) * 1988-03-25 1988-11-10 Krachten, Theodor, 4400 Münster Profilzylinder
DE19744065A1 (de) 1996-11-12 1998-05-14 Wilka Schliestechnik Gmbh Doppel-Profilschließzylinder
ES2197745B1 (es) 2001-03-12 2005-03-16 Jose Antonio Ledesma Lozano Cuerpo de bombillo antiextraccion para cerradura.
GB2375795B (en) 2001-05-25 2004-12-29 Fullex Ltd Cylinder locks
GB2372535B (en) 2002-06-29 2003-04-16 Security Products Uk Ltd Lock
EP1707710A1 (de) 2005-03-30 2006-10-04 KALE Kilit ve Kalip Sanayi A.S. Nicht zerstörbares Zylinderschloss
US20070163315A1 (en) * 2006-01-17 2007-07-19 Zhen-Lin Yang Door lock having reinforced strength
GB2434403A (en) 2006-01-24 2007-07-25 Select Engineering Asia Cylinder lock reinforcement arrangements
EP2128359A1 (de) 2008-05-28 2009-12-02 Kaba GmbH Abbruchsicherer Doppelschließzylinder
GB2494737A (en) 2011-07-05 2013-03-20 Gtv Locking Systems Uk Ltd A lock mechanism with bridging and/or guard member

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202019102154U1 (de) * 2019-04-15 2020-07-16 C.Ed. Schulte Gesellschaft mit beschränkter Haftung Zylinderschlossfabrik Modulartig aufgebauter Schließzylinder
WO2020217040A1 (en) 2019-04-24 2020-10-29 Spark Technology Engineering Ltd Cylinder lock with improved strength

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