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EP0978608A1 - Mecanisme de serrure a cylindre - Google Patents

Mecanisme de serrure a cylindre Download PDF

Info

Publication number
EP0978608A1
EP0978608A1 EP99304688A EP99304688A EP0978608A1 EP 0978608 A1 EP0978608 A1 EP 0978608A1 EP 99304688 A EP99304688 A EP 99304688A EP 99304688 A EP99304688 A EP 99304688A EP 0978608 A1 EP0978608 A1 EP 0978608A1
Authority
EP
European Patent Office
Prior art keywords
discs
barrel
locking bar
disc
locking
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Withdrawn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
EP99304688A
Other languages
German (de)
English (en)
Inventor
David William Jones
Robert c/o Valeo Security Systems Ltd. Walker
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.)
Valeo Engine Cooling UK Ltd
Original Assignee
Valeo Security Systems Ltd
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 Valeo Security Systems Ltd filed Critical Valeo Security Systems Ltd
Publication of EP0978608A1 publication Critical patent/EP0978608A1/fr
Withdrawn legal-status Critical Current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
    • E05B21/00—Locks with lamelliform tumblers which are not set by the insertion of the key and in which the tumblers do not follow the movement of the bolt e.g. Chubb-locks
    • E05B21/06—Cylinder locks, e.g. protector locks
    • E05B21/066—Cylinder locks, e.g. protector locks of the rotary-disc tumbler type

Definitions

  • the present invention relates to a cylinder lock mechanism of the kind which incorporates rotary locking discs.
  • Such a cylinder lock mechanism is disclosed in EP-A-0215237.
  • the locking discs are rotatable within a barrel by means of a key and co-operate with a locking bar which can be moved radially into and out of locking engagement with a housing.
  • the discs have a notch in their circumference and when the discs are rotated by means of combination surfaces on the shank of the key, the notches form a slot into which the locking bar can move, thus allowing the system to rotate and operate the lock.
  • the present invention provides a modified form of cylinder lock mechanism which reduces or eliminates the possibility of by-passing the lock in this way.
  • a key operated cylinder lock mechanism of the kind comprising a housing, a barrel rotatably mounted within the housing, a set of discs rotatably mounted within the barrel about an initial key insertion position, the set of discs comprising a plurality of locking discs which are rotatable by means of combination surfaces on the shank of the key; a first locking bar disposed in said barrel and operable to engage the housing to prevent rotation of the barrel from the initial key insertion position; and a peripheral notch on each disc adapted to receive the locking bar, whereby correct alignment of the peripheral notches in the discs forms an opening into which the locking bar can pass to release the barrel and thereby permit rotation thereof; the mechanism being characterised in that a second locking bar is disposed in the barrel and each of said discs has a second peripheral notch which when aligned form an opening for receiving said second locking bar, and at least one of the discs is provided with at least one additional peripheral notch, whereby alignment of respective notches on each disc with the at
  • all the discs may be provided with additional peripheral notches, and suitably more than one additional peripheral notch may be formed on each disc.
  • all the discs except one are provided with additional peripheral notches. The purpose of this is to prevent an incorrect selection of discs being made when using the correct key. By providing only correct notches at appropriate radial positions on one of the discs, the user of a key will be able to select only an alignment of notches which corresponds to the correct position for the first and second locking bars.
  • the additional notches are aligned in the discs such that any torque applied to the barrel of the lock is initially transmitted to the second locking bar, which, as before, may enable notches in the discs to be detected but the likelihood will be that these are the incorrect ones.
  • the barrel will begin to rotate but will then stop against the first locking bar unless the correct notches have been aligned. This is intended to confuse anyone trying to manipulate the system, who would then have to back-turn the lock barrel and start again.
  • the radial distance between the first peripheral notch and the first locking bar is greater than the radial distance between the second locking bar and its additional peripheral notches.
  • a key operated cylinder lock mechanism comprises a housing; a barrel rotatably mounted within the housing; a set of discs rotatably mounted within the barrel about an initial key insertion position, the set of discs comprising a plurality of locking discs which are rotatable by means of combination surfaces on the shank of the key; a locking bar disposed in the barrel and operable to engage the housing to prevent rotation of the barrel from the initial key insertion position; and a peripheral notch on each said disc adapted to receive said locking bar whereby correct alignment of the peripheral notches in said discs forms an opening into which said locking bar can pass to release the barrel and thereby permit rotation thereof; characterised in that spring means are provided acting radially on one or more of the locking discs and separately urging each disc towards a rest position.
  • the locking discs within conventional cylinder lock mechanisms are un-sprung which benefits anyone trying to manipulate the lock by aligning the discs one at a time.
  • the object of individually spring-loading the discs is to make it difficult to move the discs separately.
  • spacers are disposed between the discs and the spring means comprise individual torsion springs mounted within the spacers, each acting on a corresponding adjacent disc.
  • the barrel has a spring abutment, the discs each have a respective shoulder and the spring means comprise individual compression springs disposed between the spring abutment and the disc shoulder, to act upon the discs.
  • Fig. 1 shows a conventional key operated cylinder lock mechanism comprising a hollow stationery cylinder housing 3, a lock barrel 5 mounted rotatably within the housing 3, and a set of discs 7 rotatably mounted within the barrel about an initial key insertion position.
  • the discs comprise a stack of locking discs (as, for example, shown in Fig. 2) which are rotatable by means of combination surfaces on the shank 9 of a key.
  • the cylinder lock mechanism is additionally provided with a locking bar 12 disposed in an axially directed slot 14 formed in the wall of barrel 5 which locking bar 12 is partially received within axially directed groove 16 formed in housing 3.
  • the flanks 17,17a of groove 16 act on locking bar 12 to prevent rotation of the barrel 5.
  • Fig. 1 in the locked position shown, limited relative rotation of barrel 5 in housing 3 is permitted by groove 16 between the abutments formed by flanks 17,17a of groove 16.
  • Discs 7 are provided with peripheral notches 18 to receive the locking bar 12, whereby correct alignment of the peripheral notches 18 in each of the discs 7 enables the locking bar to pass into the opening formed by the aligned notches and, urged by the camming surfaces of the flanks 17,17a of groove 16, allow the locking bar to pass beyond the groove 16 thereby permitting rotation of barrel 5.
  • the barrel is driven in rotation by stops 20,23 formed on discs 5 which cooperate with grooves 22,24 on barrel 5.
  • the lock according to the invention is similarly provided with a housing 30, a barrel 50, and discs 70, for operation by the shank of a key 90, but in this case two locking bars are provided 28,31 housed in corresponding slots 33,34 in barrel 50.
  • First locking bar 28 is equivalent to locking bar 12 in the conventional lock shown in Fig. 1, and co-operates with similar notches 36 formed in discs 70. Alignment of the notches 36 in discs 70 is necessary before locking bar 28 can pass into the unlocked position shown in Fig. 3, thereby permitting rotation of barrel 50.
  • second locking bar 31 is operable to pass into a second peripheral notch 40 disposed on each disc 70 opposite notch 36 thus permitting movement of second locking bar 31 radially inwardly when the discs are rotated into the correct unlocking position.
  • the discs 70 are provided with additional peripheral notches 42,43 located adjacent notch 40.
  • the purpose of these notches is to make operation of the lock without the proper key extremely difficult.
  • the additional notches in the discs 70 mean that each disc can be rotated to one of several positions all of which will give the impression of accomodating locking bar 31.
  • the discs 70 may be aligned to accomodate locking bar 31, but the likelihood will be that this alignment will not be the correct alignment to free the first locking bar 28, which will continue to prevent rotation of the lock barrel 50 within the housing.
  • Each of the locking bars 28,31 cooperates with a corresponding axial groove 45,46 in housing 30.
  • the flanks of groove 45 extend slightly radially beyond the flanks of groove 46 in relation to locking bar 33 so that some rotation of the barrel 50 is permitted once second locking bar 31 has passed into the aligned notches in discs 70 even though locking bar 28 may still be in the locked condition. The effect of this is that when all the incorrect notches have been located, the barrel 50 will begin to rotate but will stop once the leading flank of groove 45 engages the first locking bar 28. This is designed to confuse anyone trying to manipulate the system, who will then have to turn the barrel 50 back to the starting position and begin again.
  • Fig. 4 shows a further anti-theft feature applied to a lock of this kind.
  • the discs 70 are separated by spacers 60 each of which is provided with a circular groove 62 housing a torsion spring 64.
  • One end 66 of the torsion spring is anchored in spacer 60 while the other end 67 is bent up to engage a hole 68 in discs 70.
  • the torsion spring urges discs 70 radially towards stop 69 which engages a corresponding surface on barrel 90.
  • Fig. 5 shows an alternative embodiment of the anti-theft feature shown in Fig. 4.
  • the discs 70 are each provided with a shoulder 71 and the barrel 50 is provided with a spring abutment here shown as a radially protruding finger 51.
  • a compression spring 72 is disposed between the spring abutment and the disc shoulder to spring load the disc 70 towards a stop position. Spacers may be provided on either side of each disc so as to constrain the spring 72.

Landscapes

  • Lock And Its Accessories (AREA)
  • Closures For Containers (AREA)
EP99304688A 1998-07-07 1999-06-16 Mecanisme de serrure a cylindre Withdrawn EP0978608A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9814722A GB2339448B (en) 1998-07-07 1998-07-07 Cylinder lock mechanism
GB9814722 1998-07-07

Publications (1)

Publication Number Publication Date
EP0978608A1 true EP0978608A1 (fr) 2000-02-09

Family

ID=10835097

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99304688A Withdrawn EP0978608A1 (fr) 1998-07-07 1999-06-16 Mecanisme de serrure a cylindre

Country Status (2)

Country Link
EP (1) EP0978608A1 (fr)
GB (1) GB2339448B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1156179A2 (fr) 2000-05-17 2001-11-21 Valeo GmbH & Co. Schliessysteme KG Serrure cylindrique
DE10024271A1 (de) * 2000-05-17 2001-11-22 Valeo Gmbh & Co Schliessyst Kg Schließzylinder
DE10024273A1 (de) * 2000-05-17 2001-11-22 Valeo Gmbh & Co Schliessyst Kg Schließzylinder
EP1199425A3 (fr) * 2000-10-18 2003-11-19 C.E. Marshall (Wolverhampton) Limited Serrure cylindrique à gorges rotatives
DE102014119676A1 (de) * 2014-12-29 2016-06-30 ABUS August Bremicker Söhne KG Schließzylinder
US10358842B2 (en) 2014-12-29 2019-07-23 ABUS August Bremicker Söhne KG Lock cylinder, key and key blank

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2268930B1 (es) * 2004-07-14 2008-03-01 Luma Industrias, S.A. "dispositivo de seguridad en llave y cerradura de discos rotatorios".
DE102005042617A1 (de) * 2005-09-07 2007-03-15 Huf Hülsbeck & Fürst Gmbh & Co. Kg Schließvorrichtung mit einem Schließzylinder und mit einem Schlüssel
DE102005042618A1 (de) * 2005-09-07 2007-03-08 Huf Hülsbeck & Fürst GmbH & Co KG Schließvorrichtung mit einem Schließzylinder und mit einem Schlüssel
FI20065424A0 (fi) * 2006-06-19 2006-06-19 Abloy Oy Avain ja levyhaittasylinterilukko
FI119155B (fi) 2006-06-19 2008-08-15 Abloy Oy Avain ja levyhaittasylinterilukko
CZ309265B6 (cs) * 2021-04-16 2022-06-29 TOKOZ a.s Uzamykací systém válcového zámku a klíče, válcový zámek a klíč

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2135106A1 (de) * 1971-07-14 1973-01-25 Huelsbeck & Fuerst Zylinderschloss
US4228668A (en) * 1979-04-19 1980-10-21 Chicago Lock Co. Axial split-pin tumbler-type lock mechanism
EP0712979A1 (fr) * 1994-11-15 1996-05-22 Abus Aug. Bremicker Söhne Kg Méthode et appareil pour verrouilles et déverrouiller un dispositif de fermeture

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848442A (en) * 1972-11-13 1974-11-19 Waertsilae Oy Ab Bi-directional cylinder lock
US4008588A (en) * 1976-04-28 1977-02-22 H. Edward Tickel, Jr. Rotary plug cylinder lock construction
FI783412A (fi) * 1978-11-09 1980-05-10 Waertsilae Oy Ab Foerbaettrat cylinderlaos
FI74320C (fi) * 1979-09-07 1988-01-11 Waertsilae Oy Ab Cylinderlaosmekanism.
GB2322404B (en) * 1997-02-25 2001-04-18 Valeo Security Systems Ltd Cylinder lock mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2135106A1 (de) * 1971-07-14 1973-01-25 Huelsbeck & Fuerst Zylinderschloss
US4228668A (en) * 1979-04-19 1980-10-21 Chicago Lock Co. Axial split-pin tumbler-type lock mechanism
EP0712979A1 (fr) * 1994-11-15 1996-05-22 Abus Aug. Bremicker Söhne Kg Méthode et appareil pour verrouilles et déverrouiller un dispositif de fermeture

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1156179A2 (fr) 2000-05-17 2001-11-21 Valeo GmbH & Co. Schliessysteme KG Serrure cylindrique
DE10024272A1 (de) * 2000-05-17 2001-11-22 Valeo Gmbh & Co Schliessyst Kg Schließzylinder
DE10024271A1 (de) * 2000-05-17 2001-11-22 Valeo Gmbh & Co Schliessyst Kg Schließzylinder
DE10024273A1 (de) * 2000-05-17 2001-11-22 Valeo Gmbh & Co Schliessyst Kg Schließzylinder
EP1199425A3 (fr) * 2000-10-18 2003-11-19 C.E. Marshall (Wolverhampton) Limited Serrure cylindrique à gorges rotatives
DE102014119676A1 (de) * 2014-12-29 2016-06-30 ABUS August Bremicker Söhne KG Schließzylinder
US10006224B2 (en) 2014-12-29 2018-06-26 ABUS August Bremicker Söhne KG Lock cylinder
US10358842B2 (en) 2014-12-29 2019-07-23 ABUS August Bremicker Söhne KG Lock cylinder, key and key blank

Also Published As

Publication number Publication date
GB9814722D0 (en) 1998-09-02
GB2339448A (en) 2000-01-26
GB2339448B (en) 2002-05-08

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