EP4379172A1 - Système de verrouillage, clé pour un tel système et ébauche de clé - Google Patents

Système de verrouillage, clé pour un tel système et ébauche de clé Download PDF

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Publication number
EP4379172A1
EP4379172A1 EP23209146.2A EP23209146A EP4379172A1 EP 4379172 A1 EP4379172 A1 EP 4379172A1 EP 23209146 A EP23209146 A EP 23209146A EP 4379172 A1 EP4379172 A1 EP 4379172A1
Authority
EP
European Patent Office
Prior art keywords
key
guiding channel
shank
cylinder insert
blank
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.)
Pending
Application number
EP23209146.2A
Other languages
German (de)
English (en)
Inventor
Artur Litwinski
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP4379172A1 publication Critical patent/EP4379172A1/fr
Pending 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
    • E05B19/00—Keys; Accessories therefor
    • 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
    • E05B19/00—Keys; Accessories therefor
    • E05B19/0017—Key profiles
    • E05B19/0035—Key profiles characterized by longitudinal bit variations
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • E05B19/0017—Key profiles
    • E05B19/0041—Key profiles characterized by the cross-section of the key blade in a plane perpendicular to the longitudinal axis of the key
    • 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

Definitions

  • the invention provides a system for closing a lock cylinder insert, a key for the system and a blank key to be used for making the actual key or duplicates thereof.
  • German patent specification DE 3225952 A1 discloses a key and a lock with a cylinder insert in a locking system for protecting against the use of a duplicated key.
  • rotation of the cylinder is possible when a pin of an additional locking element positioned in the rotary core of the cylinder insert is moved by the key.
  • Direction of movement of the locking element of the cylinder core is perpendicular to the plane of the movement of the driver pins.
  • the locking element is supported within the cylinder by a spring that biases it towards the surface of the rotary cylinder.
  • a flat key has on its wide side a cavity, open towards its tip.
  • the cavity is designed as a channel with a dove tail shaped cross-section that matches the cross-sectional profile of the head of the locking element for the cylinder core.
  • Document US 5819566 A discloses a solution concerning a key and a door lock with a protection system against unauthorized duplication of the key.
  • the side of the shank of the key, facing the head of an auxiliary pin is provided with a longitudinal slot of a variable depth and having a shape of a dovetail.
  • the slot has a shape that is complementary to the head of the pin.
  • Opening in the shank of the key, extending longitudinally from the tip of the shank has a slot which acts as a receiving groove into which a plug is clearance-fitted, said plug being defined by the head portion of the auxiliary locking pin.
  • the slot in particular the surface of the receiving groove, that is to cooperate with the reaction surface of the auxiliary locking pin, has an initial depth which ensures that the head that always protrudes into the receiving groove will be positioned within the slot.
  • the slot also comprises, in the disclosed embodiment, a ramp section where the slot deviates from its initial depth to its maximum functional depth which exceeds the depth of the recess. Therefore, when the blade of the key is inserted into the groove, a section of the slot receives and catches the head of the auxiliary pin and the cooperating surfaces of the plug will adjoin each other.
  • Document WO 11116920 A1 discloses a lock system with a key and a lock cylinder which has a lock core mounted within a housing with a channel for the key to be inserted, with multiple pawls it may act onto and which are arranged, in particular, transversely or obliquely to the direction in which the key is inserted.
  • the end of the additional locking element protruding into the key channel, as well as the key shank, are designed so that they define a reciprocal shaped connection for affixing the position of the additional locking element when the key is fully inserted.
  • the key shank has a milled undercut groove which begins at the key tip and extends in the longitudinal direction of the key shank.
  • a spring-loaded locking element is arranged which enters the groove in the key shank when the key is being inserted into the lock.
  • the undercut groove in the key shank may be shaped as a groove with a shape of a dovetail and a T-shaped groove, since grooves of this kind may be relatively easily machined in the key shank in a manufacturing plant environment.
  • the additional locking elements are special pins of the insert core which, when the key is put into the insert, enter side cavities formed as an undercut groove provided in the key, and this causes unlocking of the insert. In turn, opening of the insert without such undercut groove is impossible. Making of such an undercut groove in a key is difficult when commercially available devices for duplicating keys are used. This provides additional protection against unauthorized duplication of keys, as the manufacturer of inserts may decide who is going to be given access to blank keys with the undercut groove.
  • a system for closing a cylinder insert comprises a key which has a head and a shank, of a cross-section included in a contour similar to a rectangle, and the two short sides of the rectangle form, along the length of the key, two side faces of the key shank.
  • the key is provided with a blade with coding cut-outs for interaction with the lockable striker elements in the cylinder lock.
  • System for closing a cylinder insert further comprises a cylinder insert which has, positioned in the cylinder insert body, a rotary core with a key channel arranged for inserting a key into it in order to unlock the cylinder insert and enable opening of the lock in which the cylinder insert is positioned.
  • strikers protrude which comprise at least core pins protruding into the key channel and body pins positioned within the cylinder insert body and supported by springs. Strikers are controlled by cut-outs in the key blade.
  • a locking element is arranged that may slide at an angle, in particular 90°, relative to the direction in which the key is inserted.
  • the first end of the locking element positioned at a side of the cylinder insert body, becomes locked within a cavity in the cylinder insert body due to the action of a spring.
  • the second end of the locking element protrudes into the key channel and is shaped so that its cross-section corresponds to the cross-section of a guiding channel made in the key shank.
  • the guiding channel begins at the end of the key that adjoins the head of the key and extends along the longitudinal direction of the key shank.
  • the second end of the locking element and the guiding channel define a matching connection which is linearly slidable in parallel, to enable linear movement of the second end of the locking element along the longitudinal axis of the guiding channel, but not to allow movement of the second end of the locking element transversely or angularly relative to the longitudinal axis of the guiding channel.
  • the angle ⁇ , at which the longitudinal lines that define the guiding channel profile in the key shank are inclined, and the angle ⁇ , at which the longitudinal lines that define the second locking element end profile, may have various values and they may change suitably to the way in which the cylinder insert and the key are completed, which may constitute a coding element for the key and insert.
  • the angle ⁇ , at which the longitudinal lines that define the guiding channel profile in the keys shank are inclined is within the range of 20 to 200.
  • the angle ⁇ , at which the longitudinal lines that define the second locking element end profile are inclined is within the range of 20 to 200.
  • angles ⁇ and ⁇ in the system for closing a cylinder insert, may have various values and be implemented incrementally where the increments result from the obtainable precision with which the elements of the system are manufactured. It may be assumed that these elements, at the current level of technology, may be manufactured with an accuracy of 0.01 mm. Therefore, between the individual levels of manufacture of the elements, these angles ⁇ and ⁇ may have values, for example, every 1° to 3°. This makes it possible to obtain at least seven different values thereof. This means that six of seven keys with different angles ⁇ will not fit the locking element with a specific angle ⁇ . This also means that thanks to the locking element according to the invention the available number of key and insert combinations may increase seven times with a given configuration of strikers, and this is of particular interest when building so called master systems.
  • a key for a lock cylinder insert has a head and a shank with two side faces.
  • the key is provided with a blade with coding cut-outs.
  • the guiding channel begins at the end of the key opposite to the head and extends along the longitudinal direction of the key shank.
  • the guiding channel has a form of an undercut groove, the parallel longitudinal lines of which, that define the guiding channel profile formed in the key shank, are inclined at an angle ⁇ different than 0° relative to the key insertion direction.
  • undercut groove should be understood as a groove made in a material, where the width of the groove in the cross-section within the material is greater than at its edge.
  • the guiding groove having a form of an undercut groove, has a dovetail shape in cross-section.
  • the guiding groove having a form of an undercut groove, has a T-shaped groove cross-section.
  • the angle ⁇ at which the longitudinal lines that define the guiding channel profile are inclined relative to the longitudinal axis of the key shank where the axis is parallel to the key insertion direction is within the range of 2° to 20°.
  • the plane in which the angle ⁇ lies is parallel to the key insertion direction and perpendicular to the side face of the key in which the guiding channel is formed.
  • the guiding channel is formed in the side face of the key shank, in a groove constituting a portion of the key profile.
  • Key profile should be understood as a shape of the cross-sectional shape of the key shank, in the case when the side faces of the key shank longitudinal grooves are formed that correspond to the shape of the key channel in the rotary core.
  • a blank key for a lock cylinder insert has a head and a shank with two side faces. Coding cut-outs are made during duplication of the kay ordered by an authorized person.
  • a guiding channel is formed open outwards to one of the side faces of the blank key shank.
  • the guiding channel begins at the end of the blank key opposite to its head and extends along the longitudinal direction of the blank key shank.
  • the guiding channel has a form of an undercut groove and the parallel longitudinal lines of which, that define the guiding channel profile formed in the blank key shank, are inclined at an angle ⁇ different than 0°, relative to the blank key insertion direction.
  • the guiding groove having a form of an undercut groove, has a dovetail shape in cross-section.
  • the guiding groove having a form of an undercut groove, has a T-shaped groove cross-section.
  • the angle ⁇ at which the longitudinal lines, that define the guiding channel profile, are inclined relative to the longitudinal axis of the blank key shank is within the range of 2° to 20°.
  • the plane in which the angle ⁇ lies is parallel to the blank key insertion direction and perpendicular to the side face of the blank key in which the guiding channel is formed.
  • the guiding channel is formed in a side face of the blank key shank, in a groove that constitutes a portion of the blank key profile.
  • a cylinder insert 2 has a rotary core 22, positioned within a body 21 of the cylinder insert 2, with a key channel 23 intended for insertion of a key 1.
  • strikers 25 protrude, when in the key channel 23 there is no key 1 inserted.
  • the strikers 25 comprise at least core pins 25a and body pins 25b supported by springs 26, that force the strikers 25 towards the axis of the rotary core.
  • the strikers 25 are controlled by cur-outs in the blade 13 of the key 1.
  • the cut-outs of the proper key 1, suitable to cooperate with the cylinder insert 3 position the core pins 25a and the body pins 25b of the strikers 25 in the line of division between the body 21 and the rotary core 22.
  • the division line between the core pins 25a and the body pins 25b in this situation enables rotation of the rotary core 22 relative to the body 21 of the cylinder insert 2 of the lock in which it is positioned and enables unlocking or locking of the latter.
  • the cylinder insert 2 also comprises a driver 24 positioned on the rotation axis of the rotary core 22 and interacting with the mechanism of the lock in which the cylinder insert 2 is seated.
  • a locking element 3 is arranged that may slide angularly relative to the insertion direction of the key 1, as shown in the embodiment of the invention illustrated in fig. 5 .
  • the direction of sliding movement of the locking element 3 is perpendicular to the insertion direction of the key 1 in the embodiment of the invention shown in fig. 5 . But it is clear that in other embodiments of the invention it may extend at a different angle.
  • locking element 3 has a first end 31 positioned at the side of the body 21 of the cylinder insert 2, which locks in a cavity 28 in the body 21 of the cylinder insert 2 due to the operation of a spring 4.
  • the locking element 3 also has a second end 32, positioned at the opposite side of the locking element 3.
  • the second end 32 of the locking element 3 protrudes into the key channel 23.
  • the second end 32 of the locking element 3 is shaped so that its cross-section corresponds to the cross-section of the guiding channel 14 formed in the shank 12 of the key 1.
  • the guiding channel 14 begins with the end of the key 1 opposite to the head 11 of the key 1 and extends along the longitudinal direction of the shank 12 of the key 1.
  • the second end 32 of the locking element 3 and the guiding channel 14 define a matchingly shaped linearly parallel and slideable connection to enable linear movement of the second end 32 of the locking element 3 along the longitudinal axis of the guiding channel 14, but does not allow for movement of the second end 32 transversely or angularly relative to the longitudinal axis of the guiding channel 14 .
  • a key 1 and a blank key 100 have heads 11, 111 and shanks 12, 112 each with two side faces 10, 110.
  • longitudinal grooves may be present 10a, as shown in fig. 11 .
  • Similar grooves may be also formed in the side faces 110 of the blank key 100.
  • Longitudinal grooves 10a have a function of diversifying the key profiles (their cross-section) and making inserting of an improper key 23 into the key channel difficult.
  • Blank key 100 shown in the embodiment of the invention illustrated in fig. 1a , is analogously constructed as the key 1, and thus it comprises a head 111 and a shank 112 and the only difference consists on that in the blade 113 of the blank key 100 no coding cut-outs are made.
  • guiding channels 14, 114 are formed that open outwards onto one of the side faces 10, 110 of the shank 12, 112 of the key 1 and the blank key 100.
  • the guiding channels 14, 114 begin at the ends of the key 1 and blank key 100 opposite to their heads 11, 111 and extend along the longitudinal direction of the shanks 12, 112 of the key 1 an the blank key 100.
  • the guiding channel 14, 114 has a form of an undercut groove the parallel longitudinal lines of which, that define the guiding channel profile 14, 114 made in the shank 12, 112 of the key 1 and the blank key 100, are inclined at an angle ⁇ different than 0°, relative to the insertion direction of the key 1 and of the blank key 100, as shown in the embodiment according to fig. 2
  • the guiding channel 14, 114 may have various cross-sectional shapes.
  • the second end 32 of the locking element 3 and the guiding channel 14 in the shank 12 of the key 1 define a matchingly shaped, linearly parallel slidable connection, and the parallel longitudinal lines that define the profile of the second end 32 of the locking element 3 are inclined at an angle ⁇ , different than 0°, relative to the key insertion direction 1, as shown in the embodiment of the invention illustrated in fig. 7 and fig. 8 .
  • the longitudinal lines that define the guiding channel profile 14 made in the shank 12 of the key 1 are inclined at an angle ⁇ , different than 0°, relative to the key insertion direction 1, as shown in fig. 2 , fig. 8 fig. 9, and fig. 10 .
  • Such embodiment of the invention is shown in fig. 8 .
  • Fig. 9 shows an embodiment of the invention in which the angle ⁇ is smaller than the angle ⁇ . In this case it is not possible to insert the key 1 into the key channel 23 of the cylinder insert 2 to the full depth. It should be clear that this does not mean that the two details, namely, the cylinder insert 2 and the key 1, are incorrectly manufactured, but it solely indicates that they do not match and with this pair: key-insert it is not possible to unlock the insert.
  • Fig. 10 shows embodiments of the invention with different angles ⁇ 1, ⁇ 2, ⁇ 3, ⁇ 4 through ⁇ n, at which the profile of the guiding channel 14 may be made.
  • the profile of the second end 32 of the locking element 3 should be made to provide a coding system of a key 1 and locking element 3 in the cylinder insert 2.

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  • Lock And Its Accessories (AREA)
EP23209146.2A 2022-11-15 2023-11-10 Système de verrouillage, clé pour un tel système et ébauche de clé Pending EP4379172A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL442841A PL442841A1 (pl) 2022-11-15 2022-11-15 System zamykania wkładki bębenkowej, klucz i klucz surowy

Publications (1)

Publication Number Publication Date
EP4379172A1 true EP4379172A1 (fr) 2024-06-05

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EP23209146.2A Pending EP4379172A1 (fr) 2022-11-15 2023-11-10 Système de verrouillage, clé pour un tel système et ébauche de clé

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EP (1) EP4379172A1 (fr)
PL (1) PL442841A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3225952A1 (de) 1982-07-10 1984-01-12 Karrenberg, Wilhelm, 5620 Velbert Schliesszylinder-flachschluessel
US5819566A (en) 1997-01-29 1998-10-13 International Security Products, Inc. Cylinder lock and key
EP2078808A2 (fr) * 2008-01-10 2009-07-15 Aug. Winkhaus GmbH & Co. KG Clé pour une serrure cylindrique
WO2011116920A1 (fr) 2010-03-22 2011-09-29 Abus Pfaffenhain Gmbh Système de fermeture, clé et ébauche de clé
US20120073340A1 (en) * 2010-09-23 2012-03-29 Bo Widen Lock and key with double code pattern

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006000122A1 (de) * 2006-03-17 2007-09-20 Aug. Winkhaus Gmbh & Co. Kg Schlüssel für einen Schließzylinder und Schließzylinder für einen solchen Schlüssel
CZ2015456A3 (cs) * 2015-07-01 2016-08-10 Assa Abloy Czech & Slovakia S.R.O. Klíč pro zámek s válcovou vložkou
EP3483365B1 (fr) * 2017-11-09 2020-05-13 BKS GmbH Clé d'actionnement d'un cylindre de serrure et système de fermeture à clé et à cylindre de serrure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3225952A1 (de) 1982-07-10 1984-01-12 Karrenberg, Wilhelm, 5620 Velbert Schliesszylinder-flachschluessel
US5819566A (en) 1997-01-29 1998-10-13 International Security Products, Inc. Cylinder lock and key
EP2078808A2 (fr) * 2008-01-10 2009-07-15 Aug. Winkhaus GmbH & Co. KG Clé pour une serrure cylindrique
WO2011116920A1 (fr) 2010-03-22 2011-09-29 Abus Pfaffenhain Gmbh Système de fermeture, clé et ébauche de clé
US20120073340A1 (en) * 2010-09-23 2012-03-29 Bo Widen Lock and key with double code pattern

Also Published As

Publication number Publication date
PL442841A1 (pl) 2024-05-20

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