EP0816598B1 - Serrure cylindrique, qui peut être bloqué par une clé passe-partout - Google Patents

Serrure cylindrique, qui peut être bloqué par une clé passe-partout Download PDF

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Publication number
EP0816598B1
EP0816598B1 EP19960830373 EP96830373A EP0816598B1 EP 0816598 B1 EP0816598 B1 EP 0816598B1 EP 19960830373 EP19960830373 EP 19960830373 EP 96830373 A EP96830373 A EP 96830373A EP 0816598 B1 EP0816598 B1 EP 0816598B1
Authority
EP
European Patent Office
Prior art keywords
plug
key
keyway
master key
bolt
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
EP19960830373
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German (de)
English (en)
Other versions
EP0816598A1 (fr
Inventor
Gersam Meroni
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.)
Serrature Meroni SpA
Original Assignee
Serrature Meroni SpA
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 Serrature Meroni SpA filed Critical Serrature Meroni SpA
Priority to DE1996627996 priority Critical patent/DE69627996T2/de
Priority to EP19960830373 priority patent/EP0816598B1/fr
Publication of EP0816598A1 publication Critical patent/EP0816598A1/fr
Application granted granted Critical
Publication of EP0816598B1 publication Critical patent/EP0816598B1/fr
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
    • E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
    • E05B27/0053—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in for use with more than one key, e.g. master-slave key

Definitions

  • the subject of the present invention is a system comprising a cylinder lock, a normal key, and a master key.
  • the prior art includes cylinder locks that can be disabled by means of a master key, comprising a cylinder containing a rotatable plug that operates a bolt and comprising spring-activated pins, housed in the cylinder and in the plug, that immobilize the plug inside the cylinder and can be moved into a release position by a normal key or by the master key, inserted into the keyway of the plug, in order to allow the plug to be turned and the bolt operated; the master key is able to turn the plug from a first angular position, in which the bolt is closed but the plug can be released and the bolt withdrawn either with the normal key or with the master key, to a second angular position, in which the bolt is closed but the plug can be released and the bolt withdrawn only with the master key.
  • This lock is obviously useful in all situations where it becomes necessary to disable the lock or enable it to be operated by means of a master key only.
  • this lock can be fitted to the stop cock of a gas meter so that the gas supplier can cut off the gas supply if the user falls into arrears.
  • the lock can also be fitted to cupboards and containers in general where the particular features it provides are required.
  • the master key employed is longer than the normal key in order to fit the particular combination of pins that allows the master key to move the plug into the second angular position.
  • To have to make keys of different lengths is decidedly inconvenient from the manufacturing point of view.
  • DE-A-3929860 shows a lock device for operating microswitches in keyboards, phones, and the like, comprising a cylinder lock and flat keys which can individually actuate the cylinder lock at different rotation angle one with respect to the other as a function of different ranks of the keys.
  • the lock illustrated in Fig. 1 comprises a cylindrical body 10 in which an axial hole 11 houses a rotatable cylindrical plug 12.
  • the cylinder 10 contains a first series of radial holes 13 opening into the hole 11, and diametrically opposite these a second series of radial through holes 14 which also open into the hole 11.
  • a series of radial holes 15 designed to be lined up with the holes 13 when the plug 12 is in a first angular position and with the holes 14 when a plug 12 is in a second angular position.
  • a longitudinal keyway 16 is also formed in the plug 12 and the holes 15 lead into it.
  • the aligned holes 13 and 15 house three superimposed series of cylindrical pins 17, 18 and 19.
  • a corresponding series of springs 20 act on these pins and react on a series of caps 21 that close off the holes 13.
  • the pins 19 are hollow and each accomodates a respective spring 20.
  • the holes 14 house a series of pins 22, identical to the series of pins 19, on which act a series of springs 23 that react on a series of caps 24 closing off the holes 14.
  • a slot 26 in the shape of a 180° degree arc of a circle that extends through the keyway 16. Inserted in the hole 25, integrally with the cylinder 10, is a stop piece in the form of peg 27 which enters the slot 26.
  • the slot 26 consequently limits the rotation of the plug to 180° degrees between a first angular position and a second.
  • a diametrical cylindrical seat 28 housing a cylindrical bolt 29.
  • a spring 30 acts radially on the bolt 29 and reacts on the end wall of the seat.
  • the bolt 29 is recessed 31 to house a protruding portion 32 of the plug 12.
  • the spring 30 keeps the bolt 29 elastically in the out, i.e. closed, position, in opposition to the protruding portion 32 of the plug 12.
  • a shaped insert 33 Housed in the end of the keyway 16 of the plug 12 is a shaped insert 33.
  • the lock described above can be operated by means of a normal key, marked C, or a master key marked M.
  • the normal key C has teeth 34 different from the teeth 35 of the master key M and the master key M also has a cut 36 in its end on the opposite side from the teeth 35.
  • the master key M it is also possible for the master key M to turn 180° clockwise, with respect to the initial angular position, until the plug 12 with the pins 17 is brought over the holes 14. In this position the bolt 29 moves back into the out or closed position under the action of the spring 30 when released by the protruding portion 32 of the plug 12. In this position, if the master key M is inserted, the pins 17 are fully in the holes 15 while the pins 22 are fully in the holes 14 and it is therefore possible to turn the plug 12.
  • both the common key C and the master key M can be used to open and close the bolt 29.
  • the master key M also, when rotated through 180°, puts the lock in a disabled condition with the bolt closed, because in this position the normal key C is unable to enter the keyway 16 of the plug 12. If a person tried to make a cut in the common key C like the cut 36 of the master key M, it would admittedly be possible to insert the key C all the way into the keyway 16, but since the key C has different teeth from the master key M it will not be able to push the pins 17 and 22 into alignment in the way described above, and instead their misalignment will not allow the plug 12 to be turned.
  • the master key M is the same length as the normal key C, which means that key manufacture can be standardized.
  • the common key C and the master key M both turn in the same direction, clockwise in the present instance, so there will be no confusion over which way they should be turned.
  • the lock offers a twofold security in the disabled position (the 180° position) because, as already seen, the common key C will not fit all the way into the keyway and, if illicitly modified by cutting the cut as in the master key, it still cannot release the plug because the pins will still trap it, and hence the lock cannot be re-enabled.
  • the insert 33 prevents communication between the keyway 16 and the bolt 29 so that the bolt cannot be accessed through the keyway with a tool designed to operate the bolt without authorization. That is an additional security.
  • a simplified version may dispense with one of the two series of pins 17,18 and thus have a single combination, with the same teeth for both the common and master keys C,M. It is clear that in this form there is only a single security represented by the peg 27, for if an unauthorized modification is made to the common key C, as seen above, it will be able to re-enable the lock.
  • the configuration, arrangement and number of components of the lock may differ from that illustrated.
  • the configuration and number of pins and the configuration of the stop peg and of the bolt may be altered.
  • the peg may be replaced with stop pieces of any configuration providing an equivalent function to the peg.

Landscapes

  • Lock And Its Accessories (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)

Claims (6)

  1. Système comprenant une serrure cylindrique, une clé normale (C), et une clé passe-partout (M) pour désactiver la serrure cylindrique, la serrure cylindrique comprenant un cylindre (10) contenant un barillet pivotant (12) qui actionne une cheville (29) laquelle est logée dans un siège (28) formé dans le cylindre (10) et qui peut se déplacer entre une position sortie, c'est-à-dire fermée, et une position rétractée, c'est-à-dire ouverte, la serrure cylindrique comprenant en outre des goupilles activées par ressort (17, 18, 19), logées dans le cylindre (10) et dans le barillet (12), qui immobilisent le barillet (12) à l'intérieur du cylindre (10) et qui peuvent être amenées dans une position de libération par une clé normale (C) ou par la clé passe-partout (M) afin de permettre au barillet (12) d'être tourné et à la cheville (29) d'être actionnée, la clé passe-partout (M) étant capable de tourner le barillet (12) depuis une première position angulaire, dans laquelle la cheville (29) est fermée mais le barillet (12) peut être libéré et la cheville (29) retirée soit avec la clé normale (C) soit avec la clé passe-partout (M), jusqu'à une seconde position angulaire, dans laquelle la cheville (29) est dans la position fermée mais le barillet (12) peut être libéré et la cheville (29) retirée en position ouverte uniquement avec la clé passe-partout (M), une pièce d'arrêt (27) étant proposée fixée dans le cylindre (10) et une fente (26) formée dans le barillet (12) s'étendant au travers de la rainure de clavette (16), la pièce d'arrêt (27) entrant dans la fente (26) et se projetant dans la rainure de clavette (16) du barillet (12) avec une connexion telle qu'elle permette au barillet (12) d'être tourné, pièce d'arrêt (27) contre laquelle la clé normale (C) est stoppée lors de la rotation du barillet (12) depuis la première position angulaire jusqu'à la seconde et lors de l'insertion de la clé normale (C) dans la rainure de clavette dans la seconde position angulaire avant qu'elle atteigne l'extrémité de la rainure de clavette (16), la clé passe-partout (M) ayant une découpe (36) correspondant à la pièce d'arrêt (27) de façon qu'elle puisse la passer lorsqu'on tourne le barillet (12) de la première position angulaire vers la seconde et puisse être insérée sur toute sa longueur dans la rainure de clavette (16) du barillet (12) dans la seconde position angulaire.
  2. Système selon la Revendication 1 dans lequel dans la première position angulaire, il est proposé une première combinaison de goupilles (18, 19) qui peuvent être alignées dans la position de libération par la clé normale (C) et une seconde combinaison de goupilles (17, 18) qui peuvent être alignées dans la position de libération uniquement par la clé passe-partout (M), la seconde position angulaire présentant une combinaison de goupilles (17, 22) correspondant à ladite seconde combinaison de goupilles (17, 18).
  3. Système selon la Revendication 1 ou 2, dans lequel la pièce d'arrêt se compose d'une languette radiale (27) fixée dans le cylindre (10) et logée dans la fente (26) formée dans le barillet (12).
  4. Système selon la Revendication 1 ou 3, dans lequel la pièce d'arrêt est placée dans l'extrémité de la rainure de clavette (16) et de façon correspondante la découpe (36) de la clé passe-partout (M) est formée à l'extrémité de la clé.
  5. Système selon la Revendication 3 ou 4 dans lequel la fente (26) s'étend en un arc de cercle qui définit la rotation du barillet (12) entre la première et la seconde position angulaires.
  6. Système selon l'une des revendications précédentes, dans lequel la cheville (29) est communicante avec la rainure de clavette (16), et dans lequel un insert formé (33) est logé à l'extrémité de la rainure de clavette (16) pour empêcher la communication entre la rainure de clavette (16) et ledit siège (28).
EP19960830373 1996-07-01 1996-07-01 Serrure cylindrique, qui peut être bloqué par une clé passe-partout Expired - Lifetime EP0816598B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE1996627996 DE69627996T2 (de) 1996-07-01 1996-07-01 Schliesszylinder, der mittels eines Hauptschlüssels blockiert werden kann
EP19960830373 EP0816598B1 (fr) 1996-07-01 1996-07-01 Serrure cylindrique, qui peut être bloqué par une clé passe-partout

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19960830373 EP0816598B1 (fr) 1996-07-01 1996-07-01 Serrure cylindrique, qui peut être bloqué par une clé passe-partout

Publications (2)

Publication Number Publication Date
EP0816598A1 EP0816598A1 (fr) 1998-01-07
EP0816598B1 true EP0816598B1 (fr) 2003-05-07

Family

ID=8225953

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960830373 Expired - Lifetime EP0816598B1 (fr) 1996-07-01 1996-07-01 Serrure cylindrique, qui peut être bloqué par une clé passe-partout

Country Status (2)

Country Link
EP (1) EP0816598B1 (fr)
DE (1) DE69627996T2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004009937A1 (fr) 2002-07-24 2004-01-29 Ernst Keller Cle de surete et cylindre de fermeture
ITBS20110107A1 (it) * 2011-07-28 2013-01-29 Facchinetti S R L Flli Serratura a cilindro e valvola comprendente tale serratura
CN103276964B (zh) * 2013-05-14 2016-03-02 陆嘉良 一种空转锁
CN107288430A (zh) * 2017-08-07 2017-10-24 东莞市曼勒克特种防盗锁实业有限公司 一种需要两人同时插入钥匙双重确定的防盗弹子锁
IT202000023806A1 (it) * 2020-10-09 2022-04-09 Siam Inter Lock Tek Co Ltd Serratura configurata per controllare l'operabilita' di una valvola

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1922438A (en) * 1932-10-08 1933-08-15 American Hardware Corp Lock and latch
US2422600A (en) * 1945-10-05 1947-06-17 Gunnar E Swanson Master key cylinder lock
US4107966A (en) * 1977-04-08 1978-08-22 Schlage Lock Company Selectively rotatable cylinder for a lock
NO146028C (no) * 1979-11-29 1982-07-14 Elkem As Anordning ved laas av sylindertypen med stifttilholdere
SE440528B (sv) * 1983-12-22 1985-08-05 Gkn Stenman Ab Anordning vid cylinderlas
SE460797B (sv) * 1988-03-08 1989-11-20 Assa Ab Cylinderlaas
DE3929860C2 (de) * 1989-09-08 1993-10-21 Heinz Wolter Aus Schlüssel und Schließzylinder bestehende Schließvorrichtung

Also Published As

Publication number Publication date
DE69627996T2 (de) 2004-02-19
EP0816598A1 (fr) 1998-01-07
DE69627996D1 (de) 2003-06-12

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