EP1355023A1 - Schliesszylinder und zugehöriger Schlüssel - Google Patents

Schliesszylinder und zugehöriger Schlüssel Download PDF

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Publication number
EP1355023A1
EP1355023A1 EP02013495A EP02013495A EP1355023A1 EP 1355023 A1 EP1355023 A1 EP 1355023A1 EP 02013495 A EP02013495 A EP 02013495A EP 02013495 A EP02013495 A EP 02013495A EP 1355023 A1 EP1355023 A1 EP 1355023A1
Authority
EP
European Patent Office
Prior art keywords
key
plug
keyway
hole
hollow
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Withdrawn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
EP02013495A
Other languages
English (en)
French (fr)
Inventor
Deo Errani
Ezio Talamonti
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.)
CISA SpA
Original Assignee
CISA 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 CISA SpA filed Critical CISA SpA
Publication of EP1355023A1 publication Critical patent/EP1355023A1/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Withdrawn legal-status Critical Current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
    • E05B35/00—Locks for use with special keys or a plurality of keys ; keys therefor
    • E05B35/003—Locks for use with special keys or a plurality of keys ; keys therefor for keys with movable bits
    • 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
    • E05B27/0042—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with additional key identifying function, e.g. with use of additional key operated rotor-blocking elements, not of split pin tumbler type

Definitions

  • the present invention relates to a cylinder lock and to the associated key.
  • cylinder locks are formed by a body, commonly known as cylinder, which rotatably contains a plug.
  • a cam for actuating a bolt or spring latch is rotationally rigidly coupled to one end of the plug.
  • the plug In the cylinder there is at least one row of blind holes, and the plug has at least one row of through holes that are radial with respect to the rotation axis of the plug and a keyway that intersects such row of holes.
  • the through holes accommodate pins that have a conical end that protrudes into the keyway and the blind holes accommodate complementary pins actuated by springs.
  • the pins and the complementary pins constitute the so-called tumblers for actuating the lock.
  • the respective key is provided with a row of teeth that are formed according to a preset code along an edge of the portion that is inserted in the lock.
  • the conical ends of the row of pins of the plug engage between the teeth of the key when the key is fully inserted in the keyway, aligning the plane of contact between the pins and the complementary pins in the plane of contact of the plug with the cylinder. The plug can thus rotate in the cylinder, causing the rotation of the cam and opening the door.
  • the aim of the present invention is to provide a cylinder lock with a corresponding key that allows to obviate the above drawbacks.
  • an object of the invention is to provide a lock that is capable of offering greater resistance to effraction attempts without substantially compromising the requirements of low cost.
  • Another object of the present invention is to provide a lock in which the provided improvements can be used to increase the coding possibilities.
  • a cylinder lock with associated key comprising a body, a cylindrical seat formed in said body, a plug that can rotate in said seat, an actuation cam that is rotationally rigidly coupled to said plug, a keyway for said key that is formed axially in said plug, a plurality of actuation tumblers which, when the key is extracted, prevent the rotation of the plug and, when the key is inserted in said keyway, are actuated into the position that allows the rotation of the plug, at least one auxiliary tumbler, which is accommodated in a seat of the plug that is connected to the keyway and is actuated by elastic means so as to prevent the rotation of the plug when the key is extracted, characterized in that said auxiliary tumbler, when the key is extracted, does not protrude into the keyway and in that said key has at least one transverse hollow that accommodates a movable element that is pushed by elastic means into a position that protrudes from one side of said key so
  • the lock comprises a body 1 that is composed of a cylindrical portion 2, which is mirror-symmetrical along the central plane A and from which a portion 3 protrudes.
  • a cylindrical seat 4 is formed in the portion 2 and rotatably accommodates a plug 5, with which a cam (not shown in the drawings) of the lock is rotationally rigidly coupled.
  • the plug 5 has a longitudinal keyway 6 whose profile is contoured so as to receive an actuation key 7, which has a complementary cross-section, and a plurality of holes 8.
  • the holes 8 lie on a central plane A of the lock and are aligned with a corresponding number of holes 9 having the same diameter, which are formed in the portion 3 of the body 1.
  • each tumbler comprises a pin, which is provided with a conical end, and a complementary pin; said pins are kept in mutual contact by a spring.
  • the tumblers are not shown in the drawings because they are fully conventional (see German patents no. 1,260,340 and 2,003,059). They operate so that when the key is not inserted the springs push the pins and complementary pins into a position in which the conical ends of the pins abut against longitudinal protrusions of the walls of the keyway 6 and the complementary pins intersect a coupling plane B between the surfaces of the seat 4 and of the plug 5, preventing the rotation of the plug.
  • the contact plane between the pins and the complementary pins shifts until it lies on the coupling plane B, allowing the rotation of the plug 5 in the seat 4.
  • Additional holes 10, 11 are formed in the plug 5, are arranged on the sides of the keyway 6, and are orientated along axes C and D, which are radial with respect to the rotation axis of the plug.
  • the holes 10, 11 are aligned with recesses 12 and 13 constituted by longitudinal grooves with a very wide V-shape formed by two ramps 14 and 15 that are connected by a circular arc-like region 16.
  • the hole 10 is connected to the keyway 6 and accommodates a ball 17 whose diameter is such that when it is accommodated in the hole 10 it protrudes with a dome into the keyway 6 and is substantially tangent to the coupling plane B without however invading the recess 12.
  • the ball 17 acts as an auxiliary tumbler of a known kind, which prevents the rotation of the plug if an incorrect key is inserted in the keyway 6.
  • the plug 5 there is also a hole 18 that intersects the hole 11 at right angles and enters the keyway 6 proximate to the region meant to be occupied by the spine of the key.
  • a wing 19 protrudes into the hole 18, on the opposite side with respect to the keyway 6, and is rigidly coupled to a pin 20 that is inserted in a blind hole 21 of the plug 5 that is perpendicular to the hole 18.
  • the wing 19 acts as an abutment for a spring 22 that acts on a pin 23 that can slide in the hole 18.
  • the pin 23 comprises a cylindrical collar 24 and a tang 25 that protrudes toward the keyway 6 and has a narrower region that forms an annular cavity 26 that has a circular arc-like cross-section and an edge 27 by means of which the pin 23, due to the spring 22, abuts against a shoulder 28 of the hole 18.
  • the hole 11 intersects the hole 18 at the shoulder 28. Furthermore, the shoulder 28 is closer than the axis D to the inlet of the hole 18 in the keyway 6, so that when the edge 27 abuts against the shoulder 28 the collar 24 closes more than half of the opening of the hole 11.
  • the length of the tang 25 is such that it does not protrude into the keyway 6 when the edge 27 abuts against the shoulder 28.
  • the hole 11 accommodates a ball 29 which forms, together with the pin 23, an additional auxiliary tumbler that is suitable to prevent the rotation of the plug 5 if an incorrect key, different from the one neutralized by the ball 17, is used.
  • the ball 29 has the same radius as the annular cavity 26 and can assume two positions inside the hole 18. In a first position, which corresponds to the position in which the key is not inserted, shown in Figure 1, it surmounts the collar 24 so as to engage in the recess 13 and prevent the rotation of the plug. In the second position, which corresponds to the position in which the key is inserted in the keyway 6, the pin 23, by means of the key described below, is displaced until the cavity 26 lies opposite the ball 29, which accordingly can engage therein and allow the rotation of the plug.
  • the key 7 according to the invention for the actuation of the lock of Figure 1 is shown in cross-section in Figure 2 and comprises a profiled stem 30, which has an edge 31 provided with coded teeth 32 that are suitable to cooperate with the main tumblers accommodated in the holes 8 and 9 and a spine 33 in which there is a cylindrical hollow 34 which is substantially axially aligned with the hole 18 when the key is inserted.
  • the cylindrical hollow 34 accommodates a spring 35, which acts on a movable element constituted by a ball 6 and keeps it in abutment against an annular lip 37 formed by beveling the edge of the hollow 34.
  • the lip 37 is such that the ball 36 protrudes from the hollow 34 with a hemispherical dome.
  • the spring 35 is stronger and more preloaded than the spring 22, so as to prevail over it.
  • the key 7 is completed by a notch 38 that is formed in the stem 30 in such a position that it lies opposite the ball 17 when the key is inserted.
  • auxiliary tumbler 23, 29 on one side of the keyway 6 and to a single auxiliary tumbler 17 on the other side of the key it is possible to use one or more series of auxiliary tumblers along each side of the keyway.
  • the key 7 has an equivalent number of notches 38 and balls 36.
  • the ball 36 retracts into the hollow 34 until, in the fully inserted position, it reaches the respective auxiliary tumbler 23, 29. In this position, shown in Figure 3, since the spring 35 prevails over the spring 22, the ball 36 enters the hole 18, pushing the pin 23 into the position in which the edge 27 lies beyond the axis D with respect to the ball 36.
  • the pin 23 has performed a movement that allows the ball 29 to engage in the cavity 26 of the tang 25, so as to allow the free rotation of the plug (see Figure 5).
  • the notch 38 of the key 7, after assuming a position so as to face the ball 17, allows the ball to move freely in a radial direction and to retract fully into the hole 10 so as to not affect the rotation of the plug.
  • auxiliary tumbler 23 has no parts that protrude into the keyway 6 of the key and is therefore difficult to locate and neutralize to anyone viewing the keyway axially.
  • Figure 6 shows that by inserting a key that is not splined, i.e., not provided with longitudinal slots capable of rendering ineffective traditional auxiliary tumblers of the type constituted by a simple ball 17, both the ball 17 and the tumbler 23, 29 remain in the engagement position.
  • Figure 7 shows that if the key is splined with longitudinal slots 39 and 40, while traditional tumblers 17 are neutralized, the tumblers 23 and 29 remain fully effective.
  • a particular advantage of the invention is the fact that the ball 36 of the key 7, due to the spring 35, protrudes from the side of said key and is able to act on tumblers that are not visible to anyone viewing the keyway 6 longitudinally.
  • the keyway of the lock and the corresponding key have a profile of the type disclosed in US-4,683,740 by this same Applicant.
  • Figure 8 illustrates a different embodiment of the key 7, in which the ball 36 is retained by a lip 37 of a bush 41 that is inserted in a wider portion of the hollow 34.
  • Figure 9 illustrates a further embodiment, in which the moving element comprises a hemispherical dome 42 and a cylindrical portion 43 that is guided in the hollow 34. Also in this embodiment, the moving element can slide in a bush inserted in the hollow 34.
EP02013495A 2002-04-19 2002-06-17 Schliesszylinder und zugehöriger Schlüssel Withdrawn EP1355023A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2002BO000213A ITBO20020213A1 (it) 2002-04-19 2002-04-19 Serratura a cilindro e relativa chiave
ITBO20020213 2002-04-19

Publications (1)

Publication Number Publication Date
EP1355023A1 true EP1355023A1 (de) 2003-10-22

Family

ID=11440059

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02013495A Withdrawn EP1355023A1 (de) 2002-04-19 2002-06-17 Schliesszylinder und zugehöriger Schlüssel

Country Status (2)

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EP (1) EP1355023A1 (de)
IT (1) ITBO20020213A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006137070A1 (en) * 2005-06-23 2006-12-28 Mul-T-Lock Technologies Ltd. Slanted key combination element in key blank and key
EP1715122A3 (de) * 2005-04-05 2009-01-14 C.R. SERRATURE S.p.A. Doppelbartschloss mit mechanischem und magnetischem Sicherheitssystem
WO2011028713A2 (en) * 2009-09-02 2011-03-10 GMS Industries, Inc. Lock and key mechanism and method of use
WO2014005568A1 (de) * 2012-07-03 2014-01-09 Assa Abloy Sicherheitstechnik Gmbh Schliesszylinder-schlüssel-system
EP3604718A1 (de) * 2018-07-31 2020-02-05 BKS GmbH Schlüssel zur betätigung eines schliesszylinders

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1260340B (de) 1963-12-18 1968-02-01 Winkhaus Fa August Zusaetzliche, einteilige Sperrglieder in einem Drehzylinderschloss ueblicher Bauart
DE2003059A1 (de) 1970-01-23 1971-07-29 Winkhaus Fa August Stiftzylinderschloss mit zugehoerigem Schluessel
FR2492872A1 (fr) * 1980-08-13 1982-04-30 Vachette Sa Cle a poussoir incorpore et barillet de surete utilisant ladite cle
US4377082A (en) 1979-11-24 1983-03-22 Dom-Sicherheitstechnik Gmbh & Co. Kg Cylinder-lock with flat key
AT371883B (de) 1979-11-28 1983-08-10 Evva Werke Schluessel
GB2161204A (en) * 1984-05-18 1986-01-08 Talleres Escoriaza Sa A key for a lock
US4667495A (en) 1984-03-14 1987-05-26 Vachette Key with movable plunger, security barrel for said key, and a lock equipped with such a barrel
EP0416500A1 (de) 1989-09-06 1991-03-13 Costruzioni Italiane Serrature Affini C.I.S.A. S.p.A. Zylinderschloss und Schlüssel
US5050412A (en) * 1985-05-21 1991-09-24 Costruzioni Italiane Serrature Affini C.I.S.A. S.P.A. Flat key cylinder lock with anti-burglar features
AT395262B (de) * 1989-05-31 1992-11-10 Evva Werke Zylinderschloss fuer flachschluessel sowie zugehoeriger schluessel
US5457974A (en) * 1993-03-30 1995-10-17 Keller; Ernst Key and rotary locking cylinder for a safety lock
US5520035A (en) 1993-01-08 1996-05-28 Mul-T-Lock Ltd. Locking apparatus
WO1999049161A1 (fr) 1998-03-20 1999-09-30 Vachette Cle a poussoir mobile, barillet de surete pour ladite cle et serrure equipee de ce barillet
US6125674A (en) 1996-04-18 2000-10-03 Talleres De Escoriaza, S.A. System consisting of a noncopyable key and a closed cylinder for same

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1260340B (de) 1963-12-18 1968-02-01 Winkhaus Fa August Zusaetzliche, einteilige Sperrglieder in einem Drehzylinderschloss ueblicher Bauart
DE2003059A1 (de) 1970-01-23 1971-07-29 Winkhaus Fa August Stiftzylinderschloss mit zugehoerigem Schluessel
US4377082A (en) 1979-11-24 1983-03-22 Dom-Sicherheitstechnik Gmbh & Co. Kg Cylinder-lock with flat key
AT371883B (de) 1979-11-28 1983-08-10 Evva Werke Schluessel
FR2492872A1 (fr) * 1980-08-13 1982-04-30 Vachette Sa Cle a poussoir incorpore et barillet de surete utilisant ladite cle
US4667495A (en) 1984-03-14 1987-05-26 Vachette Key with movable plunger, security barrel for said key, and a lock equipped with such a barrel
GB2161204A (en) * 1984-05-18 1986-01-08 Talleres Escoriaza Sa A key for a lock
US5050412A (en) * 1985-05-21 1991-09-24 Costruzioni Italiane Serrature Affini C.I.S.A. S.P.A. Flat key cylinder lock with anti-burglar features
AT395262B (de) * 1989-05-31 1992-11-10 Evva Werke Zylinderschloss fuer flachschluessel sowie zugehoeriger schluessel
EP0416500A1 (de) 1989-09-06 1991-03-13 Costruzioni Italiane Serrature Affini C.I.S.A. S.p.A. Zylinderschloss und Schlüssel
US5520035A (en) 1993-01-08 1996-05-28 Mul-T-Lock Ltd. Locking apparatus
US5457974A (en) * 1993-03-30 1995-10-17 Keller; Ernst Key and rotary locking cylinder for a safety lock
US6125674A (en) 1996-04-18 2000-10-03 Talleres De Escoriaza, S.A. System consisting of a noncopyable key and a closed cylinder for same
WO1999049161A1 (fr) 1998-03-20 1999-09-30 Vachette Cle a poussoir mobile, barillet de surete pour ladite cle et serrure equipee de ce barillet

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1715122A3 (de) * 2005-04-05 2009-01-14 C.R. SERRATURE S.p.A. Doppelbartschloss mit mechanischem und magnetischem Sicherheitssystem
WO2006137070A1 (en) * 2005-06-23 2006-12-28 Mul-T-Lock Technologies Ltd. Slanted key combination element in key blank and key
WO2011028713A2 (en) * 2009-09-02 2011-03-10 GMS Industries, Inc. Lock and key mechanism and method of use
WO2011028713A3 (en) * 2009-09-02 2011-06-23 GMS Industries, Inc. Lock and key mechanism and method of use
US8312749B2 (en) 2009-09-02 2012-11-20 GMS Industries, Inc. Lock and key mechanism and method of use
WO2014005568A1 (de) * 2012-07-03 2014-01-09 Assa Abloy Sicherheitstechnik Gmbh Schliesszylinder-schlüssel-system
DE102012013422B4 (de) * 2012-07-03 2016-03-10 Assa Abloy Sicherheitstechnik Gmbh Schließzylinder - Schlüssel - System mit im Schlüssel federnd gelagerter Kugel
EP3604718A1 (de) * 2018-07-31 2020-02-05 BKS GmbH Schlüssel zur betätigung eines schliesszylinders

Also Published As

Publication number Publication date
ITBO20020213A1 (it) 2003-10-20
ITBO20020213A0 (it) 2002-04-19

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