EP4019717A1 - Cylindre de serrure doté d'une sécurité améliorée - Google Patents

Cylindre de serrure doté d'une sécurité améliorée Download PDF

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Publication number
EP4019717A1
EP4019717A1 EP20216498.4A EP20216498A EP4019717A1 EP 4019717 A1 EP4019717 A1 EP 4019717A1 EP 20216498 A EP20216498 A EP 20216498A EP 4019717 A1 EP4019717 A1 EP 4019717A1
Authority
EP
European Patent Office
Prior art keywords
abutment
rotor
counter
key
lock cylinder
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.)
Granted
Application number
EP20216498.4A
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German (de)
English (en)
Other versions
EP4019717B1 (fr
Inventor
Izzet CAN
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.)
Kale Kilit Ve Kalip Sanayi AS
Original Assignee
Kale Kilit Ve Kalip Sanayi AS
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Publication date
Application filed by Kale Kilit Ve Kalip Sanayi AS filed Critical Kale Kilit Ve Kalip Sanayi AS
Priority to EP20216498.4A priority Critical patent/EP4019717B1/fr
Publication of EP4019717A1 publication Critical patent/EP4019717A1/fr
Application granted granted Critical
Publication of EP4019717B1 publication Critical patent/EP4019717B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • E05B27/0057—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with increased picking resistance
    • E05B27/006—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with increased picking resistance whereby a small rotation without the correct key blocks further rotation of the rotor

Definitions

  • the present invention relates to a lock cylinder for use with a flat key, with a movable counter-abutment as a second security means.
  • Lock cylinder has a set of housings aligned in a vertical axis; and each housing containing a pin spring, a body pin, and a rotor pin partly project into a keyway of the rotor; the pins being urged by the spring towards the keyway and ensuring, in the absence of the flat key, blocking of the rotor with respect to the cylinder body.
  • a prior art publication in the technical field of the present invention may be referred to as US2016145896 (A1 ) among others, the document disclosing a locking system comprises a lock cylinder which has a cylinder housing, a cylinder core rotatably supported in the cylinder housing, and having a keyway, and has a plurality of tumblers which partly project into the keyway, and an abutment section which is formed at the key shaft between the key bow and the shaft profile.
  • the primary object of the present invention is to provide a lock cylinder for a flat key in which the pins play their traditional role with improved security.
  • the present invention proposes a lock cylinder for use with a flat key having an abutment section on a key shaft, comprising: a cylinder body having a central longitudinal axis; a rotor having a keyway for receiving the key, rotatable within the cylinder body; a set of housings aligned in a vertical axis relative to the central longitudinal axis; and each housing containing a pin spring, a body pin, and a rotor pin partly project into the keyway; the pins being urged by the spring towards the keyway and ensuring, in the absence of the flat key, blocking of the rotor with respect to the cylinder body.
  • the lock cylinder further comprises: a spring-biased movable counter-abutment guided in a hollowed portion formed on the rotor wherein the counter-abutment is movable between a release position and a lock position in the hollowed portion.
  • the movable counter-abutment is arranged and configured such that, on an introduction of the key into the keyway, the abutment section pushes the movable counter-abutment to the released position to correspond to one of the body pins for allowing the rotation of the rotor.
  • the hollowed portion of the rotor has at least one guiding slot in which a leg of the counter-abutment is guided. Thus, the movement of the counter-abutment is properly aligned.
  • the guiding slot extends on the longitudinal axis of the rotor with an enlarged engagement portion wherein one of the body pins engages with said engagement portion of the guiding slot and blocks the rotation of the rotor when the counter-abutment is in the lock position.
  • the counter-abutment and the engagement portion of the guiding slot are arranged and configured such that, on an introduction of the key into the keyway, the counter-abutment is guided onto the engagement portion for corresponding to one of the body pins thereby aligning said body pin with others.
  • the rotor is provided with two similarly shaped guiding slots on the rotor with a predetermined distance from each other, and the counter-abutment has two similarly shaped legs, where each leg is guided on said guiding slots, respectively.
  • the invention provides the same security according to all kinds of opening directions.
  • the hollowed portion has at least one elongated cavity in which an arm of the counter-abutment is linearly guided.
  • the counter-abutment is biased with a spring in the hollowed portion wherein the spring is placed between the counter-abutment and a planar abutment surface formed on the rotor.
  • the counter-abutment has an arc-shaped upper surface that corresponds to the body pin when the rotor is rotated and moves one of the body pins to align with the other body pins.
  • the cylinder body has a first cylinder half and a second cylinder half, and the rotor is placed within the first cylinder half.
  • any side of the lock cylinder can be used.
  • the key actuated counter-abutment is guided on a distal end of the rotor relative to the inlet of the keyway.
  • the unauthorized person cannot reach and trigger the counter-abutment.
  • the present invention also proposes a locking system for use in a door, comprising: a lock cylinder; and a flat key for use with a rotor of the lock cylinder, the flat key including a key shaft having longitudinal grooves extending a majority of the length of the key shaft wherein the flat key has an abutment section on the key shaft for moving the counter-abutment in between a release position and a lock position on the rotor. Since the production methods of most parts used in the invention are easier and conventional, a more cost-effective and safer lock cylinder is provided to the end-user.
  • the abutment section of the flat key is a raised portion that extends perpendicularly from the key shaft relative to the longitudinal axis of the flat key.
  • the keyway of the rotor has an open traverse upper end for insertion of the key shaft.
  • the picklock or the like is simply inserted into the keyway of the rotor and turned clockwise with medium torque.
  • each of the pins is slowly forced down with up and down movement until they stop, thus binding the body pins behind the shear line of the lock cylinder.
  • the shear plane is clear and the lock cylinder opens.
  • the proposed counter-abutment partly closes the open traverse upper end of the keyway, therefore, the unauthorized person using picklock will not be able to make up and down movement. This also gives additional security to the lock cylinder.
  • the present invention proposes a lock cylinder (10) for use with a flat key (40) having an abutment section (41) on a key shaft (42), comprising: a cylinder body (30) having a central longitudinal axis (X); a rotor (20) having a keyway (11) for receiving the flat key (40), rotatable within the cylinder body (30); a set of housings aligned in a vertical axis (Y) relative to the central longitudinal axis (X); and each housing containing a pin spring (33), a body pin (31), and a rotor pin (32) partly project into the keyway (11); the pins being urged by the spring towards the keyway (11) and ensuring, in the absence of the flat key (40), blocking of the rotor (20) with respect to the cylinder body (30).
  • the lock cylinder (10) further comprises: a spring-biased movable counter-abutment (14) guided in a hollowed portion (16) formed on the rotor (20) wherein the counter-abutment (14) is movable between a release position and a lock position in the hollowed portion (16).
  • the movable counter-abutment (14) is arranged and configured such that, on an introduction of the key (40) into the keyway (11), the abutment section (41) pushes the movable counter-abutment (14) to the released position to correspond to one of the body pins (31) for allowing the rotation of the rotor (20).
  • the counter abutment (14) is arranged to be pushed by the abutment section (41) of the flat key (40).
  • the counter-abutment (14) is movable between a release position in which the counter-abutment (14) authorizes rotation of the rotor (20) and a lock position in which the counter-abutment (14) prevents the rotation of the rotor (20).
  • Said hollowed portion (16) is formed on the rotor and a volume is created in which the spring-biased movable counter-abutment (14) is guided.
  • the hollowed portion (16) of the rotor (20) has at least one guiding slot (13) in which a leg (18) of the counter-abutment (14) is guided.
  • the rotor (20) is provided with two similarly shaped guiding slots (13) on the rotor (20) with a predetermined distance from each other and the counter-abutment (14) has two similar shaped legs (18), where each leg (18) is guided on said guiding slots (13), respectively.
  • the rotor (20) is provided with two similarly shaped guiding slots (13) on the rotor (20) with a predetermined distance from each other and the counter-abutment (14) has two similar shaped legs (18), where each leg (18) is guided on said guiding slots (13), respectively.
  • said guiding slots (13) are formed on the hollowed portion (16). Moreover, the guiding slot (13) extends on the longitudinal axis of the rotor (20) with an enlarged engagement portion (13a) wherein one of the body pins (31) engages with the engagement portion (13a) of the guiding slot (13) and blocks the rotation of the rotor (20) when the counter-abutment (14) is in the lock position (see Fig. 10b ).
  • the body pins (31) disclosed in the invention are conventional pins for use in the lock cylinder (10) with a tapered end portion.
  • the rotor (20) is arranged with vicinity formed by the hollowed portion (16) into which one of the body pins (31) engages for preventing rotation of the rotor (20).
  • the counter-abutment (14) and the engagement portion (13a) of the guiding slot (13) are arranged and configured such that, on an introduction of the key (40) into the keyway (11), the counter-abutment (14) is guided onto the engagement portion (13a) for corresponding to one of the body pins (31) thereby aligning said body pin (31) with others.
  • the hollowed portion (16) has at least one elongated cavity (22) in which an arm (17) of the counter-abutment (14) is linearly guided.
  • the hollowed portion (16) has two similarly shaped elongated cavities (22) for guiding two arms (17) of the counter-abutment (14).
  • the elongated cavity (22) has a rectangular cross-section and can vary with respect to the shape of the arm (17).
  • the counter-abutment (14) is a separate one-piece with at least one arm (17), at least one leg (18), a pushing surface (21) to be pushed by the abutment section of the key, and an arc-shaped upper surface for corresponding to the body pin (31).
  • the movable counter-abutment (14) are always biased with a spring (15) in the hollowed portion (16) wherein the spring (15) is placed between the counter-abutment (14) and a planar abutment surface (23) formed on the rotor (20).
  • two springs (15) can be used for pushing against the legs (18) of the counter-abutment (14).
  • Each leg (18) has a spring protrusion (24) for holding the spring (15) properly in its housing.
  • One end of the spring (15) pushes the leg (18) and the other end of the spring (15) abuts the planar abutment surface (23) of the rotor (20).
  • the planar abutment surface (23) is an extension of an upper-end section (12) of the hollowed portion (16).
  • the springs (15) are placed under the guide slots (13), respectively, in order to prevent any external intervention.
  • the counter-abutment (14) is movable between a release position and a lock position in the hollowed portion (16).
  • the counter-abutment (14) stays in the lock position under the spring force. In this state, as a second security means, even if the all body pins (31) and rotor pins (32) are aligned with a tool and the rotor (20) is rotated, one of the body pins (31) will engage with the corresponding the engagement portion (13a) of the guiding slot (13), as seen in fig. 10b .
  • Said counter-abutment (14) When the authorized user inserts the corresponding key (20), the counter-abutment (14) is pushed to the release position wherein the counter-abutment (14) closes the engagement portion (13a) of the guiding slot (13) and said body pin (31) rotates over the counter-abutment (14).
  • Said counter-abutment (14) has an arc-shaped upper surface (25) that corresponds to the body pin (31) when the rotor (20) is rotated and aligns the body pin (31) with other body pins (31).
  • Said arc-shaped upper surface (25) are partly similar to the upper periphery of the rotor (20).
  • Said counter-abutment (14) is key actuated and is guided on a distal end of the rotor (20) relative to the inlet of the keyway (11). So unauthorized person may not reach and trigger the counter-abutment (14).
  • the counter-abutment (14) is in the first position and has a predetermined first distance which is shown as "L1" in fig. 6a .
  • L1 refers to the distance in between the upper-end section (12) and the counter-abutment (14).
  • L2 refers to the distance in between the upper-end section (12) and the counter-abutment (14). Said “L2" is shorter than the "L1” and can be arranged to the corresponding body (31).
  • the present invention also proposes a locking system, comprising: a lock cylinder (10) as explained above, and a flat key (40) for use with a rotor (20) of the lock cylinder (10).
  • Said flat key (40) has a key shaft (42) having longitudinal grooves extending a majority of the length of the key shaft (42).
  • the flat key (40) has an abutment section (41) on the key shaft (42) for moving the counter-abutment (14) in between a release position and a lock position on the rotor (20).
  • the abutment section (41) of the flat key (40) can be a raised portion that extends perpendicularly from the key shaft (42) relative to the longitudinal axis of the flat key (40).
  • the pins work in a traditional way and one of the body pins (31) functions as a second security means.
  • one of the body pins (31) is selected for engagement. For instance, referring to the fig. 10b , fifth-row body pin (31) matches with the engagement portion (13a).
  • the number of the body pin (31) and the order of the matching body pin(s) (31) may vary.
  • the cylinder body (30) mainly has a first cylinder half (34a) and a second cylinder half (34b), and the rotor (20) is placed within the first cylinder half (34a).
  • a conventional type of lock cylinder can be used.

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  • Lock And Its Accessories (AREA)
EP20216498.4A 2020-12-22 2020-12-22 Cylindre de serrure doté d'une sécurité améliorée Active EP4019717B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20216498.4A EP4019717B1 (fr) 2020-12-22 2020-12-22 Cylindre de serrure doté d'une sécurité améliorée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20216498.4A EP4019717B1 (fr) 2020-12-22 2020-12-22 Cylindre de serrure doté d'une sécurité améliorée

Publications (2)

Publication Number Publication Date
EP4019717A1 true EP4019717A1 (fr) 2022-06-29
EP4019717B1 EP4019717B1 (fr) 2023-05-10

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2388966A1 (fr) * 1977-04-27 1978-11-24 Gruslin Philippe Perfectionnement aux serrures a barillet
US4341102A (en) * 1978-06-26 1982-07-27 Ku Chung C Construction for a cylinder lock and key
DE10031972A1 (de) * 2000-06-30 2002-01-10 Winkhaus Fa August Schlüssel für einen Profilschliesszylinder und Profilschliesszylinder
US20050005658A1 (en) * 2003-07-09 2005-01-13 Divito Thomas J. Cylinder lock with programmable keyway
EP2644809A1 (fr) * 2012-03-28 2013-10-02 Assa Abloy Aube Anjou Cylindre de sécurité à embrayeurs, et clé correspondante
US20160145896A1 (en) 2014-11-10 2016-05-26 ABUS August Bremicker Söhne KG Locking System, Key and Key Blank
EP3498944A1 (fr) * 2017-12-13 2019-06-19 Etablissements Thirard Cle et cylindre pour serrure de surete

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19604594C1 (de) * 1996-02-08 1997-02-20 August Knapp Schliestechnik Gm Kombination eines Schließzylinders und eines Flachschlüssels für Waren- und Spielautomaten, Geldwechselautomaten, Fahrkartenautomaten und dergleichen, mit Stiftzuhaltungen
DE19939734B4 (de) * 1999-08-21 2007-04-05 Wilka Schließtechnik GmbH Aus Schließzylinder und Schlüssel bestehende Schließvorrichtung
US8281628B2 (en) * 2009-02-18 2012-10-09 Winloc Ag Profile key with local recess

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2388966A1 (fr) * 1977-04-27 1978-11-24 Gruslin Philippe Perfectionnement aux serrures a barillet
US4341102A (en) * 1978-06-26 1982-07-27 Ku Chung C Construction for a cylinder lock and key
DE10031972A1 (de) * 2000-06-30 2002-01-10 Winkhaus Fa August Schlüssel für einen Profilschliesszylinder und Profilschliesszylinder
US20050005658A1 (en) * 2003-07-09 2005-01-13 Divito Thomas J. Cylinder lock with programmable keyway
EP2644809A1 (fr) * 2012-03-28 2013-10-02 Assa Abloy Aube Anjou Cylindre de sécurité à embrayeurs, et clé correspondante
US20160145896A1 (en) 2014-11-10 2016-05-26 ABUS August Bremicker Söhne KG Locking System, Key and Key Blank
EP3498944A1 (fr) * 2017-12-13 2019-06-19 Etablissements Thirard Cle et cylindre pour serrure de surete

Also Published As

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