EP3222799B1 - Serrure cylindrique - Google Patents

Serrure cylindrique Download PDF

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Publication number
EP3222799B1
EP3222799B1 EP17158233.1A EP17158233A EP3222799B1 EP 3222799 B1 EP3222799 B1 EP 3222799B1 EP 17158233 A EP17158233 A EP 17158233A EP 3222799 B1 EP3222799 B1 EP 3222799B1
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EP
European Patent Office
Prior art keywords
lock
cam
spool
key
top hat
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.)
Active
Application number
EP17158233.1A
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German (de)
English (en)
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EP3222799A1 (fr
Inventor
Mark O'sullivan
Marcus O'sullivan
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Individual
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Individual
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Publication of EP3222799A1 publication Critical patent/EP3222799A1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/20—Means independent of the locking mechanism for preventing unauthorised opening, e.g. for securing the bolt in the fastening position
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B9/00—Lock casings or latch-mechanism casings ; Fastening locks or fasteners or parts thereof to the wing
    • E05B9/10—Coupling devices for the two halves of double cylinder locks, e.g. devices for coupling the rotor with the locking cam
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/20—Means independent of the locking mechanism for preventing unauthorised opening, e.g. for securing the bolt in the fastening position
    • E05B17/2084—Means to prevent forced opening by attack, tampering or jimmying
    • E05B17/2092—Means responsive to tampering or attack providing additional locking

Definitions

  • the invention relates generally to the field of locks and locking mechanisms and relates more specifically to cylinder locks and locking mechanisms.
  • cylinder locks and locking mechanisms for preventing unauthorised access through a doorway which comprise securing means for reducing the risk of unauthorised access through the doorway even when the cylinder lock is snapped.
  • a cylinder lock comprises two key entry points, one on the exterior side of a door and one on the interior side, and an associated bolt mechanism incorporating a number of bolts which extend, when the mechanism is locked, between the door and the frame surrounding the door.
  • a cam within the lock can be actuated to move the or each bolt from a locked position to an unlocked position, and vice versa, thus allowing the door to be locked and unlocked.
  • Cylinder locks typically additionally comprise means for stopping unauthorised access through the door when a part of the cylinder lock, usually an exterior end, is snapped or otherwise detached from the remainder of the lock.
  • Most current cylinder locks are provided with a sacrificial end portion provided at the exterior end of the lock which, when snapped, aims to prevent the cam inside from being actuated manually by a screwdriver or other lock-picking tool.
  • burglars managed to circumvent these means and manually actuate the cam to unlock the door.
  • Some cylinder locks have been further developed by incorporating a securing means comprising a pin or the like which, under normal use, i.e. when the lock is not snapped, is suppressed and inactive.
  • the securing means e.g. a locking pin
  • these mechanisms have also been shown, in practice, to be ineffective if a cylinder is snapped in a certain way, causing the securing means to remain inactive and thus allowing unauthorised access through a doorway.
  • CH672940 which describes an anti-picking double cylinder lock comprising two coaxial cylinders
  • DE1728517 which relates to a coupling device for a lock bit hub of a built-in cylinder lock.
  • AT330609 discloses a cylinder lock having a securing means comprising a securing element which engages a hole in the rotatable barrels to prevent movement of the cam when a key is not present in the lock.
  • EP0364660 discloses another securing means with securing pins engaging holes in the stators to prevent cam movement when a key is not present in the lock.
  • the invention provides a cylinder lock comprising a rotatable lock barrel and a cam for actuating the bolting means of a door; the cylinder lock further comprising two ends, a first end positioned on a first side of the cam and a second end position on a second side of the cam, substantially opposite said first end; wherein at least said first end comprises a keyhole which, when a key is inserted, actuates the cam to lock or unlock the bolting means of the door; wherein the lock further comprises a drive assembly for displacing said cam when a key is inserted and having a spool, and a securing means comprising a spring and a pin which is displaceable, by said drive assembly, between a first position in which the pin is held down against the spring by the spool so that it is engaged in a hole of the lock barrel to prevent movement of the cam, and a second position wherein the pin disengages the hold of the lock barrel to allow movement of the cam; whereby, in use, when a key is
  • This configuration is particularly advantageous because it provides a cylinder lock which more effectively prevents movement of the cam and therefore unlocking of associated bolting means of a door when the cylinder is snapped.
  • the securing means is implemented as soon as a key is removed from the keyhole so that however 'well' the cylinder may be snapped, i.e. regardless of how gently or accurately the cylinder is snapped, the securing means prevents movement of the cam without the correct key.
  • the securing means is not reliant on a particular amount of force or direction of force to be implemented.
  • This configuration is particularly advantageous because the size and shape of the spool ensures that the pin is engaging and preventing movement of the cam when a key is absent from the keyhole.
  • the provision of a spring, pin and spool also simplifies the configuration and minimises the risk that unauthorised access will be gained.
  • the drive assembly at the first end of the lock comprises a top hat bush fixed to said cam and a drive dog assembly; said drive dog assembly comprising two or more digits which engage two or more corresponding recesses of said top hat bush, when a key is inserted into the lock, to actuate said top hat bush; and wherein the top hat bush further comprises a channel and said drive dog assembly comprises an elongate member which is located within and extends through said channel to engage and displace said spool when a key is inserted.
  • the two or more digits and corresponding recesses ensure that the top hat bush and thus the cam are rotated in an improved manner to unlock and lock the bolting means of a door.
  • the elongate member of the drive dog assembly and the channel of the top hat bush are particularly advantageous because the spool can be effectively displaced when a key is inserted at the first end.
  • said drive assembly further comprises a shutter for shutting the aperture of the top hat bush when the elongate member of the drive dog assembly is removed from said aperture, such that, in use, if the elongate member is extracted from the aperture, the shutter shuts said aperture to prevent access to said cam.
  • the shutter prevents access to the cam from the first end should the first end be detached from the remainder of the lock. If the first end of the lock is snapped from the rest of the lock, the elongate member of the drive dog assembly falls out of the aperture of the top hat bush and the shutter subsequently shuts the aperture.
  • the rotator body comprises a recess which is arranged to receive the shutter when the elongate member of the drive dog assembly is removed from the channel of the top hat bush.
  • This configuration is particularly advantageous because the shutter is bounded and guided by the recess when actuated. Security of the lock is also improved because it is made harder for the shutter to be moved once actuated.
  • top hat bush and rotator body are formed of a single piece; and the shutter is contained within said single piece. This configuration further improves the structural integrity and security of the cylinder lock.
  • a first portion of the spool engages said pin when a key is not present in the lock and a second portion of the spool engages the pin when a key is inserted into the lock; wherein the first portion of the spool is greater in diameter than the second portion such that, when a key is inserted into the lock, the pin is disengaged from the cam under the force of said spring.
  • the first portion of the spool having a greater diameter than the second portion ensures that the pin is pushed, against the force of the spring, into engagement with the cam when a key is absent from the keyhole. When a key is inserted, the spool is displaced so that the portion of lesser diameter engages the pin to allow the pin to disengage the cam.
  • a region of the spool which comprises said first and second portions has a parallelogram shape and the first portion of the spool comprises a corner of the parallelogram and the second portion of the spool comprises a side of the parallelogram adjacent the corner of the first portion.
  • a parallelogram shape allows the lock to be used effectively from either the first, exterior end or the second, interior end with an equal effect on the pin. If a corner of the parallelogram region comprises the first portion, and sides adjacent the corner comprise the second portion (from either the first or second ends), the pin can effectively engage and disengage the cam when a key is inserted at the first end or when a key or actuator is used at the second end.
  • the drive assembly at the second end of the lock comprises an internal plunger actuator which is accessible from the second end of the lock and which, in use, can be displaced to engage and displace said spool.
  • An internal plunger actuator simplifies the configuration from the second end. Simplification at this end is possible because it is far less likely that the second end will be detached from the remainder of the lock, and unauthorised access to the cam via the second end is much less likely.
  • said drive assembly further comprises one or more springs connected to said internal plunger actuator; wherein, in use, said internal plunger actuator is displaced against the or each spring such that, when pressure is released from the actuator, the actuator disengages said spool so that the spool may return to the first position in which the securing means engages and prevents movement of the cam.
  • This configuration is particularly advantageous because the spool efficiently returns to its resting state when pressure is released from the actuator such that the securing means, i.e. the pin, engages and prevents movement of the cam when pressure is released from the actuator.
  • the lock is configured such that, in the event that the first end of the cylinder is detached from the remainder of the lock, the lock is still actuable by a key.
  • This configuration is particularly advantageous because, even if the first end of the cylinder is detached from the remainder of the lock, the lock can still be actuated by a person with a correct key.
  • a preferred embodiment of a cylinder lock is shown in Figure 1 and is referenced generally as 100.
  • the lock 100 is improved in that a securing means is actuated whenever a key is removed from the lock to prevent movement of a lock cam inside the lock and therefore prevent unlocking of associated bolting means of a door (not shown) which extend between a door and a frame surrounding the door (also not shown).
  • the lock 100 comprises a cam 2 which is located between a first end 101 and a second end 102 of the lock 100.
  • the first end 101 comprises a keyhole 103.
  • the cam can be actuated, via drive assembly 104, to unlock and lock the cylinder lock 100.
  • the lock 100 also comprises securing means 6, preferably in the form of a pin, which is displaceable by the drive assembly 104 between a first position in which the securing means 6 engages the cam 2 to prevent its movement, and a second position in which the securing means 6 disengages the cam 2 to allow its movement.
  • the securing means comprises a spring 13 and a pin 6 and the drive assembly 104 comprises a spool 7 which engages the pin 6 and which is displaced when a key is inserted to allow movement of the pin 6, from the first to the second position, and therefore movement of the cam 2.
  • the spool 7 comprises a region which is of a parallelogram shape and a corner of the region engages the pin in the first position, and the sides of the parallelogram adjacent the corner engage the pin in the second position.
  • the side of the parallelogram which engages the pin in the second position depends on which end the spool is displaced, i.e. pushed from.
  • the drive assembly at the first end 101 of the lock 100 i.e. the external lock barrel, comprises a drive dog assembly 14 and a top hat bush 1.
  • the drive dog assembly 14 comprises two or more digits, or shorter pins, for engaging corresponding recesses of the top hat bush 1.
  • the drive dog assembly further comprises a central elongate member, or central pin which passes through an aperture of the top hat bush 1 to engage the spool 7 when a key is inserted at the first end 101.
  • the lock 100 further comprises a shutter 10 which shuts the aperture of the top hat bush 1 in the event that the elongate member of the drive dog assembly is removed from the aperture of the top hat bush 1, e.g. if the first end 101 is detached from the remainder of the lock 100.
  • the second end 102 of the lock 100 i.e. the internal lock barrel, comprises an internal plunger actuator 9 for displacing the spool 7 and disengaging the securing means 6 from the cam from the inside of a doorway.
  • the second end 102 also comprises a keyhole.
  • One or more springs are provided for displacing the spool such that the securing means 6 is in the first position when a key is absent from the keyhole of the first end 101 or if pressure is released from the internal plunger actuator 9 of the second end 102.
  • the lock 100 comprises the following in use: In the resting state, as shown best in Figure 2 , the pin 6 is held down against the spring 13 by the spool 7 so that it is engaged in a hole in the internal lock barrel.
  • the drive is transferred to the external drive dog assembly 14 due to the engagement of the ears in the slots in the lock barrel, the drive is transferred to the top hat bush 1 by the short pins which are engaged in the pockets on the bush.
  • the top hat bush 1 is permanently engaged with the rotator body 5 via the pins 3 and so as the top hat bush rotates the rotator body and the cam 2 also rotate.
  • the rotator body 5 further comprises a recess 200 for receiving the shutter 10 which, in the cylinder lock 100, is located between the rotator body 5 and the top hat bush 1.
  • the recess 200 is substantially rectangular in shape, having a width slightly larger than the width of the shutter 10 so that the recess 200 guides the movement of the shutter 10 in the event the cylinder lock 100 is broken or tampered with, i.e. when the elongate member of the drive dog assembly vacates the aperture of the top hat bush 1.
  • the recess 200 also makes it more difficult for the shutter 10 to be dislodged from the recess 200 after it has been actuated, improving the security of the cylinder lock 100 even when it has been broken and the front end of the lock 100 has been removed.
  • the recess 200 has a rounded end to cooperate with the rounded end of the shutter 10 when the shutter 10 is actuated.
  • top hat bush 1 and rotator body 5 are integrally formed as a single unit 201, as shown in Figure 15 .
  • Actuation of the spool by the drive dog assembly 14 happens in the same way as described above, i.e. the elongate member of the drive dog assembly 14 located in the aperture of the top hat bush/rotator body 201 to displace the spool 7 and rotate the cam.
  • the security of the lock 100 is further improved because the rotator body 5 and top hat bush 1 are formed as a single piece.
  • the shutter 10 is located within the the single piece top hat bush/rotator body 201 and acts in the same way as described above in the event that the elongate member of the drive dog assembly 14 vacates the aperture of the single unit 201.
  • the shutter 10 is located above the aperture of the unit 201 so that the shutter 10 is actuated, at least in part, via gravitational force if the elongate member is removed from the aperture.
  • the unit 201 may further comprise one or more springs such that the shutter 10 is spring loaded. If spring loaded, it is not essential that the shutter 10 is located above the aperture of the unit 201. Locating the shutter 10 within the single unit 201 of the top hat bush 1 and rotator body 5 further improves the structural integrity and security of the cylinder lock 100.
  • the single unit top hat bush/rotator body 201 is comprised of stainless steel.
  • Figures 16 and 17 show views of an alternative embodiment, wherein the spool 7 and internal plunger 9 have an alternative shape and configuration to that of the first embodiment.
  • the part of the spool 7 which engages the securing means 6 is not a parallelogram shape, but still comprises regions of greater and less diameter to actuate and suppress the securing means 6 in use.
  • the internal plunger 9 has a recess for receiving an end of the spool 7 when the lock is used via the second end.
  • the shutter 10 comprises a ball bearing 202.
  • the ball bearing is spring-loaded such that, when the cylinder lock is broken or tampered with, the ball bearing 202 is urged into a position in which the ball bearing blocks the aperture of the top hat bush 1.
  • the ball-bearing 202 is fired to move from the position shown in Figure 18B to the position shown in Figure 19B .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lock And Its Accessories (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)

Claims (10)

  1. Serrure à barillet (100) comprenant un barillet de serrure rotatif et une came (2) pour actionner le moyen de verrouillage d'une porte ; la serrure à barillet comprenant en outre deux extrémités, une première extrémité (101) positionnée sur un premier côté de la came (2) et une deuxième extrémité (102) positionnée sur un deuxième côté de la came, sensiblement opposée à ladite première extrémité ; dans laquelle au moins ladite première extrémité comprend un trou de serrure (103) qui, lorsqu'une clé est insérée, actionne la came pour verrouiller ou déverrouiller le moyen de verrouillage de la porte ; dans laquelle la serrure comprend en outre un ensemble d'entraînement (104) pour déplacer ladite came lorsqu'une clé est insérée et ayant une bobine (7), et un moyen de fixation (6) comprenant un ressort et une tige qui est déplaçable, par ledit ensemble d'entraînement, entre une première position dans laquelle la tige est maintenue vers le bas contre le ressort par la bobine de sorte qu'elle est engagée dans un trou du barillet de serrure pour empêcher le mouvement de la came, et une deuxième position dans laquelle la tige désengage le trou du barillet de serrure pour permettre le mouvement de la came ; de sorte que, en cours d'utilisation, lorsqu'une clé n'est pas présente dans la serrure, le moyen de fixation (6) est dans la première position pour empêcher le mouvement de la came et donc le moyen de verrouillage de la porte.
  2. Serrure selon la revendication 1, dans laquelle l'ensemble d'entraînement (104) à la première extrémité (101) de la serrure comprend un Top Hat Bush (1) et un corps rotatif (5) fixé à ladite came et un ensemble de doigt d'entraînement (14) ; ledit ensemble de doigt d'entraînement comprenant deux ou plusieurs doigts qui s'engagent dans deux ou plusieurs évidements correspondants dudit Top Hat Bush, lorsqu'une clé est insérée dans la serrure, pour actionner ledit Top Hat Bush ; et dans lequel le Top Hat Bush comprend en outre un canal et ledit ensemble de doigt d'entraînement (14) comprend un élément allongé qui est situé à l'intérieur et s'étend à travers ledit canal pour s'engager et déplacer ladite bobine (7) lorsqu'une clé est insérée.
  3. Serrure selon la revendication 2, dans laquelle ledit ensemble d'entraînement (104) comprend en outre un obturateur (10) pour fermer l'ouverture du Top Hat Bush (1) lorsque l'élément allongé de l'ensemble de doigt d'entraînement (14) est retiré de ladite ouverture, de sorte que, en utilisation, si l'élément allongé est extrait de l'ouverture, l'obturateur (10) ferme ladite ouverture pour empêcher l'accès à ladite came.
  4. Serrure selon la revendication 3, dans laquelle le corps rotatif (5) comprend un évidement qui est agencé pour recevoir l'obturateur (10) lorsque l'élément allongé de l'ensemble de doigt d'entraînement est retiré du canal du Top Hat Bush.
  5. Serrure selon la revendication 3 ou la revendication 4, dans laquelle le Top Hat Bush (1) et le corps rotatif (5) sont formés d'une seule pièce ; et l'obturateur (10) est contenu dans ladite pièce unique.
  6. Serrure selon l'une quelconque des revendications précédentes, dans laquelle une première partie de la bobine (7) s'engage dans ladite tige lorsqu'une clé n'est pas présente dans la serrure et une deuxième partie de la bobine s'engage dans la tige lorsqu'une clé est insérée dans la serrure ; dans laquelle la première partie de la bobine a un diamètre supérieur à celui de la deuxième partie de sorte que, lorsqu'une clé est insérée dans la serrure, la tige est désengagée de la came sous la force dudit ressort.
  7. Serrure selon la revendication 6, dans laquelle une région de la bobine (7) qui comprend lesdites première et deuxième parties a une forme de parallélogramme et la première partie de la bobine comprend un coin du parallélogramme et la deuxième partie de la bobine comprend un côté du parallélogramme adjacent au coin de la première partie.
  8. Serrure selon l'une quelconque des revendications précédentes, dans laquelle l'ensemble d'entraînement à la deuxième extrémité (102) de la serrure comprend un actionneur de piston interne (9) qui est accessible depuis la deuxième extrémité de la serrure et qui, en utilisation, peut être déplacé pour s'engager et déplacer ladite bobine (7).
  9. Serrure selon la revendication 8, dans laquelle ledit ensemble d'entraînement comprend en outre un ou plusieurs ressorts reliés audit actionneur de piston interne (9) ; dans laquelle, en utilisation, ledit actionneur de piston interne est déplacé contre le ou chaque ressort de sorte que, lorsque la pression est relâchée de l'actionneur, l'actionneur désengage ledit tiroir (7) de sorte que le tiroir peut revenir à la première position dans laquelle le moyen de fixation s'engage et empêche le mouvement de la came.
  10. Serrure selon l'une quelconque des revendications précédentes, dans laquelle la serrure est configurée de telle sorte que, dans le cas où la première extrémité du cylindre est détachée du reste de la serrure, la serrure est toujours actionnable par une clé.
EP17158233.1A 2016-03-11 2017-02-27 Serrure cylindrique Active EP3222799B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1604226.9A GB2548159B (en) 2016-03-11 2016-03-11 A Cylinder Lock with Cam Securing Mechanism
GB1701578.5A GB2548224B (en) 2016-03-11 2017-01-31 A cylinder lock with cam securing mechanism

Publications (2)

Publication Number Publication Date
EP3222799A1 EP3222799A1 (fr) 2017-09-27
EP3222799B1 true EP3222799B1 (fr) 2021-07-14

Family

ID=55952221

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17158233.1A Active EP3222799B1 (fr) 2016-03-11 2017-02-27 Serrure cylindrique

Country Status (2)

Country Link
EP (1) EP3222799B1 (fr)
GB (2) GB2548159B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB202210454D0 (en) * 2022-07-15 2022-08-31 Osullivan Mark Cylinder lock

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1105755B (de) * 1959-01-10 1961-04-27 Zeiss Ikon Ag Einbaudoppelzylinder mit zwei Schliesszylindern und gemeinsamem Schliessglied
FR1537981A (fr) * 1967-07-21 1968-08-30 Serrure à pompe perfectionnée
DE2359725A1 (de) * 1973-11-30 1975-06-05 Zeiss Ikon Ag Kupplung fuer doppelzylinderschloesser
AT330609B (de) * 1974-07-31 1976-07-12 Grundmann Gmbh Geb Abtastsicherung an einem zylinderschloss
DE3010959A1 (de) * 1980-03-21 1981-10-01 Zeiss Ikon Ag, 7000 Stuttgart Doppelzylinderschloss
CH672940A5 (en) * 1985-06-20 1990-01-15 Bernhard Faude Double-cylinder lock - has member coupling to lock lug when key is inserted, being otherwise detached from it
DE3835816A1 (de) * 1988-10-21 1990-04-26 Erich Mundhenke Zylinderschloss
GB2461297A (en) * 2008-06-26 2009-12-30 Avocet Hardware Ltd Lock with additional security mechanism and clutch
CN103711369A (zh) * 2013-05-14 2014-04-09 徐钜祥 一种改进的门锁机构
AT14128U1 (de) * 2013-08-23 2015-04-15 Kaba Gmbh Schließzylinder

Also Published As

Publication number Publication date
GB201604226D0 (en) 2016-04-27
GB2548159B (en) 2018-03-07
GB2548224B (en) 2019-06-26
GB2548159A (en) 2017-09-13
GB2548224A (en) 2017-09-13
GB201701578D0 (en) 2017-03-15
EP3222799A1 (fr) 2017-09-27

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