EP0892130B1 - Barillet de serrure - Google Patents

Barillet de serrure Download PDF

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Publication number
EP0892130B1
EP0892130B1 EP98305619A EP98305619A EP0892130B1 EP 0892130 B1 EP0892130 B1 EP 0892130B1 EP 98305619 A EP98305619 A EP 98305619A EP 98305619 A EP98305619 A EP 98305619A EP 0892130 B1 EP0892130 B1 EP 0892130B1
Authority
EP
European Patent Office
Prior art keywords
rotor
pair
pins
lock cylinder
pin
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
EP98305619A
Other languages
German (de)
English (en)
Other versions
EP0892130A2 (fr
EP0892130A3 (fr
Inventor
Brian Cowper
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.)
Banham Patent Locks Ltd
Original Assignee
Banham Patent Locks 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 Banham Patent Locks Ltd filed Critical Banham Patent Locks Ltd
Publication of EP0892130A2 publication Critical patent/EP0892130A2/fr
Publication of EP0892130A3 publication Critical patent/EP0892130A3/fr
Application granted granted Critical
Publication of EP0892130B1 publication Critical patent/EP0892130B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

Definitions

  • the present invention relates to an improvement in the design of locks. More specifically, the present invention is concerned with improvements to pin-tumbler type locks.
  • a conventional pin-tumbler lock cylinder comprises a rotor rotatably mounted within a stator.
  • the rotor has an axial keyway and a plurality of transverse holes which are aligned with blind passages in the stator.
  • a pair of locking pins in mutual abutment are slidably mounted in each of said passages and biased by a spring located in the blind passage such that one pin of each pair is located in the rotor and the other pin of each pair projects across the interface between the rotor and stator so preventing rotation of the rotor.
  • the pins When the correct key is inserted, the pins are urged against their bias to a position in which the interfaces between the pins of each pair are aligned with the interface between the rotor and stator, thereby allowing rotation of the rotor. On rotation of the rotor, one pin of each pair is retained in the stator, the other in the rotor. If the wrong key is inserted, one or more pair(s) of pins is/are misaligned thereby preventing rotation.
  • Such a lock is vulnerable to being picked by a method in which a tool is inserted into the keyway and a slight torsion applied while a second tool is used to sequentially urge each pair of pins into alignment.
  • the ease with which this is achieved is dependent upon the tolerances at which the pins, passages and transverse holes are machined.
  • the stator is part cylindrical with a lobed region in which the pins are located. Such a stator is relatively difficult and expensive to manufacture.
  • European Patent Specification EP 067388 A2 discloses a rotary cylinder lock including not only conventional spring loaded tumbler pins, but also, at right angles thereto, opposed springless detent pins which have rounded heads arranged at the periphery of the lock core.
  • European Patent Specification EP 0756052 A1 discloses a cylinder lock with opposing pairs of locking pins and counter pins, with respective springs acting on the counter pins. When there is no key in the lock cylinder, the respective facing ends of a pair of locking pins interengage, with rotation of the cylinder being prevented, in the normal manner, by one counter pin being across the interface between the lock cylinder and its housing.
  • a key-operable lock cylinder comprising a rotor, a stator, said rotor mounted within the stator for rotation about its axis, a keyway extending axially into the rotor, a plurality of locking pins and a plurality of transverse passageways extending through said rotor and said stator and intersecting said keyway, a pair of said locking pins being slidably mounted in each passageway, characterised in that for each pair of said locking pins, each locking pin of the pair is resiliently biased by a respective biasing means associated with the locking pin, so that the locking pins of each pair are in mutual abutment within the keyway with one locking pin of each pair projecting across an interface between the rotor and stator so as to prevent rotation of the rotor, whereas in use, when a complementary key is inserted in the keyway, the locking pins are movable by said key such that all the locking pins become located entirely within the rotor,
  • the stator may have a circular section. This is easier and less expensive to manufacture than the conventional lobed stator.
  • the total length of a pair of pins may be less than the diameter of the rotor, such that the pins of a pair do not necessarily abut when the complementary key is in the keyway.
  • the smaller the total length of a pair of pins relative to the diameter of the rotor the less accuracy is required in positioning of the pins to allow the rotor to rotate, so reducing the security of the lock cylinder.
  • the total length of the pins is substantially the same as the diameter of the rotor.
  • the pins of a pair will be in mutual abutment when the complementary key is in the keyway and there will only be one location along the transverse passageway where abutment of the pins is possible to allow rotation of the rotor.
  • the pins may have different lengths.
  • the complementary key must correctly position each pair of pins.
  • the number of different lengths of pin and the number of pairs of pins determines the number of possible key configurations.
  • a first pin of each pair is selected from one of five lengths of pin, said five lengths chosen such that the second pin of each pair may be selected from the same five lengths of pin, such that the total length of the pair is substantially the same as the diameter of the rotor.
  • the number of possible key combinations is increased by varying the axial spacing of the transverse passageways between different lock cylinders.
  • one pin of each pair is biased more strongly than the other pin of the pair.
  • the shorter pin is more strongly biased. This helps to ensure that one pin of each pair projects across the interface between the rotor and stator when no key is in the keyway.
  • the biasing means is a compression spring.
  • the pins are shaped (e.g. tapered, ramped or curved) at the ends of abutment so as to facilitate movement of the pins by the key.
  • the pins are tapered.
  • the keyway has a centre line which is offset from the axis of the rotor.
  • a key having a handle and a shank, characterised in that said shank is adapted to fit, in use, in a keyway of a lock cylinder and is provided with a row of recesses along its length on a first major surface and a row of recesses along its length on an opposite major surface, such that said recesses on the first and the opposite major surfaces are aligned in pairs so as to be capable of accommodating locking pins of said lock cylinder, the recesses of each of said aligned pairs of recesses being interconnected.
  • the recesses of an aligned pair are of different depths.
  • the position of the restriction relative to the first and opposite major surfaces may vary from one passage to another.
  • first and second rows of aligned recesses are provided, said rows being offset by an equal distance from a centre line of the shank and each recess in the first row on the first major surface being identical to the corresponding recess in the second row on the opposite major surface, similarly for the recesses in the second row on the first major surface and the corresponding recesses in the first row on the opposite major surface.
  • the shank of the key has a C 2 -axis of rotational symmetry, such that when the key is inserted in its complementary lock having a keyway with a centre line offset from the axis of the rotor, the key can operate the lock irrespective of the orientation of the shank in the keyway.
  • the shank is tapered at an end remote from the handle so that in use, separation of said locking pins to allow insertion of the shank into said lock cylinder keyway is facilitated.
  • the recesses are tapered.
  • the lock cylinder 2 shown is that which is more fully described in copending British Patent Application No. 9715111.2.
  • the lock cylinder 2 comprises a cylindrical rotor 4, a stator 6 of annular cross section and a cam 8.
  • the rotor 4 has an axially extending keyway 10 which is eccentrically located along a diameter of the rotor 4.
  • the rotor 4 is received by and is a close sliding fit in the stator 6.
  • the cam 8 is driveably coupled with the rotor 4.
  • a row of six transverse passages 12 pass through the rotor 4 and stator 6 intersecting the keyway 10.
  • a region 12a of each passage 12 through the stator 6 is narrower than a region 12b of the passage 12 through the rotor 4.
  • an annular seat 14 is provided at each interface of the passage 12 with the keyway 10.
  • each passage 12 is located a pair of locking pins 16,16'.
  • Each pin 16,16' has a tapered end region 16a, an annular rim 16b, a stepped region 16c and a cylindrical end region 16d. In a rest position shown (Fig 2), the pins 16,16' abut each other at ends 16e adjacent the tapered end regions 16a.
  • the clearance between the end region 16d of the pin 16 and the region 12a of the passage 12 is not critical.
  • the pins 16, 16' are resiliently biased towards each other by a compression spring 18, 18' associated with each pin.
  • Each spring 18,18' is held in place by the annular rim 16b of its associated pin 16, 16, at one end, and an annular collar 20 at a second end, said collar 20 abutting the stator 6 at an interface 22 between the rotor 4 and stator 6.
  • one compression spring 18' is more strongly biased. In the case where the pins 16, 16' are of different lengths, the shorter pin 16' is provided with the more strongly biased spring 18' (as shown, Fig 2).
  • each pin 16, 16' the distance from the end 16e of the pin 16, 16' to the rim 16b is such that in the rest position shown (Fig 2) the longer pin 16 projects across the interface 22 between the rotor 4 and stator 6. If the pins 16, 16' are equal in length, either may be provided with the more resilient spring 18'.
  • the lock as described is secure against picking by the previously mentioned method of applying torsion. Although it might be possible to urge one pin 16,16' outwardly, the other pin 16',16 will become easily locked across the interface 22 because the bias of the relatively weak spring 18',18 will be overcome by any slight torsion. Physically pulling the pin 16',16 into the rotor 4 would be extremely difficult.
  • a key 30 comprises an integrally formed handle 32 and a shank 34.
  • the shank 34 is tapered at a free end 36.
  • the shank 34 On a first major surface 38a, the shank 34 has first 40a and second 40b rows of tapered recesses 42a, 42a' along its length, said rows 40a, 40b being positioned either side of a centre line.
  • the recesses 42a, 42a' interconnect with tapered recesses 42b, 42b' on an opposite major surface 38b of the shank 34.
  • the depth of the interconnecting recess 42b on the opposite major surface 38b is the same as the depth of the recess 42a' in the same row position of the second row 40b of the first major surface 38b, similarly for the second row 40b, i.e the shank 34 has a C 2 -axis of rotational symmetry along its length.
  • the shank 34 of the complementary key 30 In order to free the rotor 4 for rotation, the shank 34 of the complementary key 30 must be inserted in the keyway 10. This is facilitated by the tapered end region 36 of the key 30 which moves the pins 16, 16' apart as the shank 34 is inserted.
  • the symmetrical nature of the shank 34 removes the requirement of placing the key 30 in the keyway 10 in the correct orientation, since either of the possible orientations will have the same effect.
  • the complementary key 30 is correctly positioned in the lock and the first row 40a of interconnected recesses 42a, 42b on the shank 34 is aligned with the locking pins 16, 16'.
  • the other row 40b of interconnecting recesses 42a', 42b' is inoperative and not shown.
  • the pins 16, 16' are urged into and received into the recesses 42a, 42b, the pins 16, 16' being a close fit therein.
  • the ends 16e of the pins 16, 16' of a pair may abut, but the radial position of each pin 16, 16' is primarily determined by the depth of the recess 42a, 42b in which it is seated.
  • the pins 16, 16' and recesses 42a, 42b correspond so that the end regions 16d of the pins 16, 16' do not project across the interface 22 between the rotor 4 and the stator 6, so allowing the rotor 4 to be turned.
  • FIG 5 an alternative embodiment is shown in which, with the key 30 correctly positioned in the keyway 10, one pin 16 is not in contact with the shank 34 of the key 30, so that only the radial position of the second pin 16' is determined by the depth of the recess 42b in which it is seated, the radial position of the first pin 16 being solely determined by the position of the second pin 16' with which it is in abutment.
  • the second pin 16' which is seated in the recess 42b of the key 30 is provided with the more resilient spring 18'.

Landscapes

  • Lock And Its Accessories (AREA)
  • Fluid-Damping Devices (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Pens And Brushes (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Claims (16)

  1. Barillet de serrure (2) pouvant être actionné par une clé, comprenant un rotor (4), un stator (6), ledit rotor (4) étant monté dans le stator (6) en vue d'une rotation autour de son axe, une entrée de clé (10) s'étendant axialement dans le rotor (4), plusieurs goupilles de verrouillage (16, 16') et plusieurs passages transversaux (12) s'étendant à travers ledit rotor (4) et ledit stator (6) et coupant ladite entrée de clé (10), une paire desdites goupilles de verrouillage (16, 16') étant montée par glissement dans chaque passage (12), caractérisé en ce que dans chaque paire desdites goupilles de verrouillage, chaque goupille de verrouillage de la paire est poussé de manière élastique par un moyen poussoir respectif (18, 18') associé à la goupille de verrouillage (16, 16'), de sorte que les goupilles de verrouillage de chaque paire butent l'une contre l'autre dans l'entrée de clé (10), une goupille de verrouillage (16) de chaque paire débordant à travers une interface (22) entre le rotor (4) et le stator (6), de sorte à empêcher la rotation du rotor (4), les goupilles de verrouillage (16, 16') pouvant être déplacées en service, lors de l'insertion d'une clé complémentaire (30) dans l'entrée de clé (10), par l'intermédiaire de ladite clé (30), de sorte que toutes les goupilles de verrouillage (16, 16') sont agencées entièrement à l'intérieur du rotor (4), permettant ainsi la rotation du rotor (4).
  2. Barillet de serrure (2) selon la revendication 1, caractérisé en ce que les goupilles (16, 16') d'au moins une paire de goupilles ont des longueurs différentes.
  3. Barillet de serrure (2) selon les revendications 1 ou 2, caractérisé en ce que dans chaque paire des goupilles (16, 16'), la longueur totale des goupilles (16, 16') est pratiquement identique au diamètre du rotor (4), de sorte que les goupilles (16, 16') d'une paire sont destinées à buter l'une contre l'autre lorsque la clé complémentaire (30) se trouve dans l'entrée de clé (10).
  4. Barillet de serrure (2) selon la revendication 3, caractérisé en ce qu'une première goupille (16) de chaque paire est sélectionnée parmi une de cinq longueurs des goupilles, lesdites cinq longueurs étant choisies de sorte que la deuxième goupille (16') de chaque paire peut être sélectionnée parmi les mêmes cinq longueurs des goupilles.
  5. Barillet de serrure (2) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte six paires de goupilles (16, 16') et six passages transversaux (12).
  6. Barillet de serrure (2) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'espacement axial des passages transversaux (12) le long du rotor (4) n'est pas égal.
  7. Barillet de serrure (2) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une goupille (16, 16') de chaque paire est sollicitée plus fortement que l'autre goupille (16', 16) de la paire.
  8. Barillet de serrure (2) selon la revendication 7, dépendant de l'une quelconque des revendications 2 à 6, caractérisé en ce que la goupille plus courte (16') et sollicitée plus fortement.
  9. Barillet de serrure (2) selon l'une quelconque des revendications précédentes, caractérisé en ce que dans au moins une paire, les goupilles (16, 16') sont formées au niveau de leurs extrémités (16e) à butée mutuelle de sorte à faciliter le déplacement des goupilles (16, 16') par la clé (30).
  10. Barillet de serrure (2) selon la revendication 9, caractérisé en ce que les goupilles (16, 16') d'au moins une paire sont effilées.
  11. Barillet de serrure (2) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'entrée de clé (10) comporte une ligne médiane décalée par rapport à l'axe du rotor (4).
  12. Clé comportant un anneau (32) et une tige (34), caractérisée en ce que ladite tige (34) est destinée à être ajustée en service dans une entrée de clé d'un barillet de serrure et comporte une rangée d'évidements (42a) le long de sa longueur sur une première surface majeure (38a) et une rangée d'évidements (42b) le long de sa longueur sur une surface majeure opposée (38b), de sorte que lesdits évidements (42a, 42b) sur la première surface majeure (38a) et la surface majeure opposée (38b) sont alignés par paires, pouvant recevoir ainsi les goupilles de verrouillage dudit barillet de serrure, les évidements de chacune desdites paires d'évidements alignés étant interconnectés.
  13. Clé selon la revendication 12, caractérisée en ce que les évidements (42a, 42b) d'une paire alignée ont des profondeurs différentes.
  14. Clé selon l'une des revendications 12 ou 13, caractérisée en ce qu'elle comporte des première (42a, 42b) et deuxième (42a', 42b') rangées d'évidements alignés, lesdites rangées étant décalées d'une distance égale par rapport à une ligne médiane de la tige (34), chaque évidement (42a) dans la première rangée sur la première surface majeure (38a) étant identique à l'évidement correspondant (42b') dans la deuxième rangée sur la surface majeure opposée (38b), ceci étant aussi le cas pour les évidements (42a') dans la deuxième rangée sur la première surface majeure (38a) et les évidements correspondants (42b) dans la première rangée sur la surface majeure opposée (38b).
  15. Clé selon l'une quelconque des revendications 12 à 14, caractérisée en ce que la tige (34) est effilée au niveau d'une extrémité (36) éloignée de l'anneau (32), de sorte à faciliter en service la séparation desdites goupilles de verrouillage pour permettre l'insertion de la tige (34) dans ladite entrée de clé du barillet de serrure.
  16. Clé selon l'une quelconque des revendications 12 à 15, caractérisée en ce que les évidements (42a, 42b) sont effilés.
EP98305619A 1997-07-18 1998-07-15 Barillet de serrure Expired - Lifetime EP0892130B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9715114 1997-07-18
GB9715114A GB9715114D0 (en) 1997-07-18 1997-07-18 Lock cylinder

Publications (3)

Publication Number Publication Date
EP0892130A2 EP0892130A2 (fr) 1999-01-20
EP0892130A3 EP0892130A3 (fr) 1999-10-06
EP0892130B1 true EP0892130B1 (fr) 2003-09-10

Family

ID=10816029

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98305619A Expired - Lifetime EP0892130B1 (fr) 1997-07-18 1998-07-15 Barillet de serrure

Country Status (8)

Country Link
EP (1) EP0892130B1 (fr)
AT (1) ATE249563T1 (fr)
DE (1) DE69817936T2 (fr)
DK (1) DK0892130T3 (fr)
ES (1) ES2202751T3 (fr)
GB (1) GB9715114D0 (fr)
HK (1) HK1015846A1 (fr)
PT (1) PT892130E (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2360333A2 (fr) 2010-02-15 2011-08-24 Banham Patent Locks Limited Barillet de serrure et clé correspondante
EP2497882A2 (fr) 2011-03-07 2012-09-12 Banham Patent Locks Limited Cylindre de serrure et sa clé
EP2530224A2 (fr) 2011-05-31 2012-12-05 Banham Patent Locks Limited Verrou anti-sabotage

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0005752D0 (en) 2000-03-11 2000-05-03 Banham Patent Locks Ltd Lock
CZ31363U1 (cs) * 2017-11-13 2018-01-09 Assa Abloy Czech & Slovakia S.R.O. Kombinace válcové zamykací vložky a klíče, klíč, válcová zamykací vložka a polotovar klíče

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2431221A1 (de) * 1974-06-28 1976-01-15 Karl Dipl Ing Hanhs Abtastsicheres drehzylinderschloss
AT372144B (de) * 1979-11-28 1983-09-12 Evva Werke Zylinderschloss mit ausnehmungen oder vorspruenge des schluessels abtastenden abtastbolzen
DE3123511C2 (de) * 1981-06-13 1984-09-20 Aug. Winkhaus KG, 4404 Telgte Drehzylinderschloss
DE3425872A1 (de) * 1984-07-13 1986-01-16 BKS GmbH, 5620 Velbert Schliesszylinder mit zugehoerigem flachschluessel
DE19527200A1 (de) * 1995-07-26 1997-01-30 Niederdrenk Julius Kg Schließzylinder mit Stiftzuhaltungen sowie Schlüssel für einen Schließzylinder mit Stiftzuhaltungen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2360333A2 (fr) 2010-02-15 2011-08-24 Banham Patent Locks Limited Barillet de serrure et clé correspondante
EP2497882A2 (fr) 2011-03-07 2012-09-12 Banham Patent Locks Limited Cylindre de serrure et sa clé
EP2497882A3 (fr) * 2011-03-07 2014-04-23 Banham Patent Locks Limited Cylindre de serrure et sa clé
EP2530224A2 (fr) 2011-05-31 2012-12-05 Banham Patent Locks Limited Verrou anti-sabotage

Also Published As

Publication number Publication date
HK1015846A1 (en) 1999-10-22
DK0892130T3 (da) 2003-10-27
ES2202751T3 (es) 2004-04-01
PT892130E (pt) 2003-11-28
EP0892130A2 (fr) 1999-01-20
DE69817936T2 (de) 2004-09-02
DE69817936D1 (de) 2003-10-16
ATE249563T1 (de) 2003-09-15
GB9715114D0 (en) 1997-09-24
EP0892130A3 (fr) 1999-10-06

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