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WO2018002569A1 - Ensemble came pour un verrou et verrou comprenant ce dernier - Google Patents

Ensemble came pour un verrou et verrou comprenant ce dernier Download PDF

Info

Publication number
WO2018002569A1
WO2018002569A1 PCT/GB2017/000093 GB2017000093W WO2018002569A1 WO 2018002569 A1 WO2018002569 A1 WO 2018002569A1 GB 2017000093 W GB2017000093 W GB 2017000093W WO 2018002569 A1 WO2018002569 A1 WO 2018002569A1
Authority
WO
WIPO (PCT)
Prior art keywords
cam
blade
assembly
lock
casing
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.)
Ceased
Application number
PCT/GB2017/000093
Other languages
English (en)
Inventor
David Jennings
John Mcloughlin
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.)
UAP Ltd
Original Assignee
UAP 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 UAP Ltd filed Critical UAP Ltd
Priority to GB1819213.8A priority Critical patent/GB2566187B/en
Publication of WO2018002569A1 publication Critical patent/WO2018002569A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • E05B9/04—Casings of cylinder locks
    • E05B9/048—Stator reinforcements
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/04—Devices for coupling the turning cylinder of a single or a double cylinder lock with the bolt operating member
    • E05B17/047—Devices for coupling the turning cylinder of a single or a double cylinder lock with the bolt operating member with rotating output elements forming part of cylinder locks, e.g. locking cams of double cylinder locks

Definitions

  • the present invention relates to a cam assembly for a lock, in particular a Euro-style cylinder lock, and to a lock comprising such a cam assembly.
  • a cylinder lock is a self-contained part of a locking mechanism used in conjunction with a lock case comprising a latching mechanism for locking doors, windows and other closures.
  • a conventional cylinder lock l is shown in Fig. ⁇ and comprises a casing 2, as shown in Fig. 2, which has specific exterior and interior portions 3 and 4 respectively housing separate locking mechanisms. These portions 3 and 4 are connected by an integral central joining portion 5 and by a cam assembly 6.
  • the cam assembly 6 includes a rotatable cam 7 with an integral, projecting lever or blade 7a that when rotated bears against a spring-loaded portion of the latching mechanism to open it.
  • the cam 7 is positioned approximately mid-way along the casing 2 and is selectively connected to the interior or the exterior locking mechanism by a clutch 8 that is axially slidable between two positions wherein it is engaged by one of the locking mechanisms and turns the cam 7 as the locking mechanism is rotated by a key or thumb-turn but is not engaged by the other of the lock mechanisms so that it can rotate freely relative thereto.
  • a clutch 8 that is axially slidable between two positions wherein it is engaged by one of the locking mechanisms and turns the cam 7 as the locking mechanism is rotated by a key or thumb-turn but is not engaged by the other of the lock mechanisms so that it can rotate freely relative thereto.
  • the clutch 8 In cylinder locks with a thumb-turn on one side, the clutch 8 is usually biased into the position wherein it is normally engaged with the thumb-turn so that a user can open the closure by simply rotating the thumb-turn but can be slid into the other of the two positions by a key inserted into the other side of the lock.
  • a problem with known locks of this type is that they can be broken into and the latching mechanism actuated with relative ease.
  • the main reason for this is that the casing 2 is weak owing to the need to accommodate the projecting lever or blade 7a of the cam assembly 7 between the exterior and interior portions 3 and 4 of the casing 2.
  • the casing 2 is effectively "cutaway" for this purpose with only a narrow joining portion 5 being left, as shown particularly in Fig. 2.
  • the application of force via a tool from the exterior side of the lock can break the casing 2 and allow components of the locking mechanism to be removed to leave the latching mechanism exposed.
  • measures are usually taken to prevent access to the latching mechanism by causing the casing 2 to break at a predetermined position.
  • It is an object of the present invention is to provide a cam assembly and a cylinder lock that enables the casing of the lock to be strengthened rather than weakened as a defence against attack.
  • a cam assembly for a lock comprising a rotatable cam with a radially extendable and retractable blade that that is moved between fully extended and fully retracted positions during one revolution of the cam.
  • a casing of the lock does not have to be "cut-away” or have a portion thereof reduced in size to accommodate the blade of the cam.
  • the position of the blade relative to the cam is controlled by a follower that travels along a profiled surface of a closed pathway as the cam rotates against the force of a biasing means acting on the blade.
  • the closed pathway is defined by a component located adjacent the cam that is stationary with respect to the cam and the follower preferably comprises a projection carried by the blade.
  • a cylinder lock comprising a cam assembly in accordance with the first aspect of the present invention.
  • a cylinder lock comprising a casing defining interior and exterior portions housing locking mechanisms adapted to that interact with a rotatable cam having a radially extendable and retractable blade that that is moved between fully extended and fully retracted positions during one revolution of the cam.
  • Fig. l is a side elevation of a conventional cylinder lock
  • Fig. 2 is a perspective view of a lock case for a conventional cylinder lock as shown in Fig. l;
  • Fig. 3 is a perspective view of a cam assembly in accordance with the first aspect of the present invention
  • Fig. 4 is a side elevation of the cam assembly shown in Fig. 3
  • Fig. 5 is an end view of the cam assembly shown in Figs. 3 and 4;
  • Fig. 6 is a sectional view along the line VI -VI on Fig. 4;
  • Fig. 7a is a perspective view of a lock casing and cam assembly of a cylinder lock in accordance with the second aspect of the present invention, the cam assembly being shown with a cam blade thereof in a fully extended position;
  • Fig. 7b is an end view of the lock casing and cam assembly shown in Fig,. 7a;
  • Figs. 8a and 8b are views similar to Figs. 7 a and 7b respectively but showing the cam blade in a partially extended position;
  • Figs. 9a and 9b are views similar to Figs. 7a and 7b respectively but showing the cam blade when fully retracted in a slightly different lock casing;
  • Figs. 10a and 10b are side and perspective views of the lock casing shown in Fig. 9a and 9b.
  • FIG. 3 to 6 An embodiment of a cam assembly 10 for a lock is shown on Figs. 3 to 6 and comprises a rotatable cam 11 that has a substantially circular cross- sectional profile but that has a radially extendable and retractable blade 12, which forms a cam surface that in use bears against a portion of an adjacent latching mechanism to open and/or close it.
  • the cam 11 When used within a lock such as a cylindrical or Euro-style lock, as described below, the cam 11 is rotated by torque provided by turning a key or a turn of a locking mechanism of the lock.
  • torque will be transmitted to the cam 11 by a clutch mechanism as in a conventional lock.
  • the blade 12 is moved between fully extended and fully retracted positions during one revolution of the cam 11.
  • the position of the blade 12 relative to the cam 11 is preferably controlled by a follower 13 that travels along a profiled surface 14 of a closed pathway as the cam 11 rotates.
  • the blade 12 is moved into its fully extended position from its fully retracted position by a biasing means 15 although in other embodiments (not shown) the biasing means may operate in the opposite direction, tending to retract the blade 12 into the cam 11 as opposed to tending to extend the blade 12 out of the cam 11.
  • the biasing means 15 comprises a compression spring but in other embodiments it may be provided by magnetic forces, for example by the two repelling poles of a pair of magnets.
  • the biasing means may be a tension spring or two attracting poles of a pair of magnets.
  • the blade 12 comprises two legs 16 that locate and in apertures 17 formed in the cam 11. These apertures 17 assist in restraining unwanted lateral movement of the blade 12 relative to the cam 11.
  • the compression spring 15 is located around a post 18 defined by the blade 12 between the legs 16 and bears against a ridge 19 defined by the cam 11 between the apertures 17.
  • each side of the cam 11 Located on each side of the cam 11 are respective disc-shaped components 20 that are stationary with respect to the cam 1 and that each define one of two profiled surfaces of respective closed pathways 14, for example, formed by the edges of cutout portions 15.
  • Both of the cutout portions 15 and therefore the profiled pathways 14 are preferably identical in shape and size.
  • the pathways 14 are substantially elliptical with minor axes aligned with a vertical axis through the cam assembly 10 when in use in a cylinder lock, as is further described below.
  • the elliptical shape will usually be slightly distorted to overcome any tendency for the blade to jam owing to frictional forces that tend to be at their highest where the major axis intersects the pathway 14.
  • the followers 13 that travel along these pathways 14 are preferably projections , for example in the form of pins, which project from opposite sides of the blade 12 and may be integrally formed therewith.
  • projections for example in the form of pins, which project from opposite sides of the blade 12 and may be integrally formed therewith.
  • the projections could be carried by the components
  • the followers 13 are forced into contact with the surfaces of the pathways 14 of the components 20 by the biasing means 15.
  • the cam 11 and the blade 12 rotate the shape of the closed pathway that the followers 13 travel along either allow the blade 12 to extend out of the cam 11 under the influence of the biasing means 15 or force the blade 12 to be retracted back into the cam 11.
  • the blade 12 is either fully extended or fully retracted when the pins 13 are aligned with the minor axes of the elliptical pathways 14 and is partially extended or retracted dependent on the direction of rotation of the cam 11 when the pins 13 are aligned with the major axes of the elliptical pathways 14.
  • the cam assembly 10 is located in a central position adjacent the joining portion 25, as in a conventional lock such as that described above.
  • the cam assembly 10 is the arranged so that the blade 12 is at its fully extended position when it is directly opposite the joining portion 25, i.e. at a "12 ⁇ clock" position relative to the casing 22, and fully retracted when adjacent the joining portion 25, i.e. at a "6 o'clock" position relative to the casing 22. This is shown in Figs. 7a, 7b and 9a, 9b respectively.
  • Figs. 8a and 8b show the cam assembly 10 when the blade 12 is in a partially extended position.
  • the position of the pins 13 relative to the pathways 14 in each of these positions can be seen in Figs. 7b, 8b and 9b respectively.
  • the components 20 locate between respectively between the exterior and interior portions 23 and 24 and the cam 11.
  • the components 20 may be integrally formed with the inner ends of the exterior and interior portions 23 and 24 so that the cam assembly as shown in Figs. 3 to 6 is not a separable part of the lock but the lock still comprises a similar cam arrangement.
  • Figs. 10a and 10b show the casing 22 of the lock 21. It should be compared with the casing 2 of a conventional lock 1 as shown in Fig. 2 and it can be seen that the joining portion 25 is considerably larger than the corresponding joining portion 5 of the conventional lock 1 because it does not need to accommodate a projecting blade. Even if the joining portion 25 has to be cut-away slightly as at 26, as shown in the embodiments illustrated in Figs. 7a and 8a, to accommodate the blade 12 as it starts to extend from the cam 11 or just before complete retraction into the cam 11, it is still considerably larger than the joining portion 5. Hence, the lock casing 22 is considerably stronger than the lock casing 2 and therefore much harder to snap so that no area of weakness such as a groove 9 is required.
  • the increase in resistance to snapping of the casing 22 in the joining region 25 is disproportionately greater than the increase in material thickness because the mode of snapping involves bending and twisting movements and not pulling in a pure tensile manner. It follows that even a small increase in material thickness in the region 25 as achieved by the present invention is beneficial in thwarting attack by snapping and at an indeterminate point the increase in strength will make it impossible, practically, to snap the joining region 25 at all.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Harvester Elements (AREA)
  • Casings For Electric Apparatus (AREA)

Abstract

L'invention concerne un ensemble came (10) pour un verrou (21) comprenant une came rotative (11) dotée d'une lame radialement extensible et rétractable (12). La lame (12) est déplacée entre des positions complètement étendue et complètement rétractée pendant un tour de la came (11). De préférence, la position de la lame (12) par rapport à la came (11) est commandée par un suiveur (13) qui se déplace le long d'une surface profilée d'un trajet fermé (14) lorsque la came (11) tourne contre la force d'un moyen de sollicitation (15) qui agit sur la lame (12). Le trajet fermé (14) peut être défini par un élément (20) situé à proximité de la came (11) qui est fixe par rapport à la came (11) et le suiveur (13) comprend une saillie telle qu'une broche portée par la lame (12). L'invention concerne également un verrou de cylindre (21) incorporant un tel ensemble came ou comprenant un tel agencement de came, l'élément (20) étant formé d'une seule pièce avec un boîtier (22) faisant partie du verrou de cylindre (21).
PCT/GB2017/000093 2016-06-29 2017-06-21 Ensemble came pour un verrou et verrou comprenant ce dernier Ceased WO2018002569A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1819213.8A GB2566187B (en) 2016-06-29 2017-06-21 A cam assembly for a lock and a lock comprising same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1611274.0 2016-06-29
GBGB1611274.0A GB201611274D0 (en) 2016-06-29 2016-06-29 A cam assembly for a lock and a cylinder lock comprising same

Publications (1)

Publication Number Publication Date
WO2018002569A1 true WO2018002569A1 (fr) 2018-01-04

Family

ID=56891646

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2017/000093 Ceased WO2018002569A1 (fr) 2016-06-29 2017-06-21 Ensemble came pour un verrou et verrou comprenant ce dernier

Country Status (2)

Country Link
GB (2) GB201611274D0 (fr)
WO (1) WO2018002569A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201800010395A1 (it) * 2018-11-16 2020-05-16 Mauro Trespidi Cilindro di serratura
CN114150936A (zh) * 2021-10-25 2022-03-08 瑞尔工业股份有限公司 锁心及钥匙组成的防盗结构
WO2022107014A1 (fr) * 2020-11-18 2022-05-27 Salimov Ildar Ibragimovich Mécanisme de barillet de serrure
WO2022253684A3 (fr) * 2021-06-01 2023-01-12 Titon Hardware Limited Serrure à cylindre et came pour une serrure à cylindre

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8526663U1 (de) * 1985-09-18 1985-11-14 Percic, Mladen, 6000 Frankfurt Sicherheitsschloß
DE3719311A1 (de) * 1987-06-10 1988-12-29 Zeiss Ikon Ag Schliesszylinder
EP1482111A2 (fr) * 2003-05-27 2004-12-01 Rav-Bariach Vehicle Protection Ltd. Serrure de véhicule multifonctionnelle
US20150308152A1 (en) * 2014-04-24 2015-10-29 Compx International Inc. Self-lock module

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8526663U1 (de) * 1985-09-18 1985-11-14 Percic, Mladen, 6000 Frankfurt Sicherheitsschloß
DE3719311A1 (de) * 1987-06-10 1988-12-29 Zeiss Ikon Ag Schliesszylinder
EP1482111A2 (fr) * 2003-05-27 2004-12-01 Rav-Bariach Vehicle Protection Ltd. Serrure de véhicule multifonctionnelle
US20150308152A1 (en) * 2014-04-24 2015-10-29 Compx International Inc. Self-lock module

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201800010395A1 (it) * 2018-11-16 2020-05-16 Mauro Trespidi Cilindro di serratura
WO2020099215A1 (fr) * 2018-11-16 2020-05-22 Nemesy S.R.L.C.R. Barillet de serrure
US11982104B2 (en) 2018-11-16 2024-05-14 Nemesy S.R.L.C.R. Lock cylinder
WO2022107014A1 (fr) * 2020-11-18 2022-05-27 Salimov Ildar Ibragimovich Mécanisme de barillet de serrure
WO2022253684A3 (fr) * 2021-06-01 2023-01-12 Titon Hardware Limited Serrure à cylindre et came pour une serrure à cylindre
CN114150936A (zh) * 2021-10-25 2022-03-08 瑞尔工业股份有限公司 锁心及钥匙组成的防盗结构
CN114150936B (zh) * 2021-10-25 2022-08-23 瑞尔工业股份有限公司 锁心及钥匙组成的防盗结构

Also Published As

Publication number Publication date
GB201819213D0 (en) 2019-01-09
GB2566187B (en) 2021-10-20
GB2566187A (en) 2019-03-06
GB201611274D0 (en) 2016-08-10

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