EP0918124A1 - Système de changement de clé pou serrure à panneton - Google Patents

Système de changement de clé pou serrure à panneton Download PDF

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Publication number
EP0918124A1
EP0918124A1 EP98119879A EP98119879A EP0918124A1 EP 0918124 A1 EP0918124 A1 EP 0918124A1 EP 98119879 A EP98119879 A EP 98119879A EP 98119879 A EP98119879 A EP 98119879A EP 0918124 A1 EP0918124 A1 EP 0918124A1
Authority
EP
European Patent Office
Prior art keywords
key
change
cylinder lock
tumblers
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.)
Withdrawn
Application number
EP98119879A
Other languages
German (de)
English (en)
Inventor
Miyake c/o Goal Co. Ltd. Mitsunori
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.)
Goal Co Ltd
Original Assignee
Goal Co 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 Goal Co Ltd filed Critical Goal Co Ltd
Publication of EP0918124A1 publication Critical patent/EP0918124A1/fr
Withdrawn legal-status Critical Current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
    • E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
    • E05B27/005—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with changeable combinations

Definitions

  • the invention relates to a key-change system for a cylinder lock wherein the cylinder lock comprises an upper tumbler, a bottom tumbler and an auxiliary tumbler interposed therebetween so that the auxiliary tumbler is removed to enable the key-change, and the key-change system also provides a function of a master key.
  • a key-change system for a cylinder lock generally refers to a construction key system or a special key system applied to cylinder locks for locking up a multiple dwelling house and a multiple accomodation facility, such as rental apartments, flats, hotels, etc., at the stages of under construction and thereafter.
  • the construction key system is used or engaged in, for example, by a contractor in charge of interior finishing for a plurality of specific dwellings (e.g., apartments, or rooms of hotel) in the concerned building under construction.
  • the contractor is allowed or enabled to keep a key of a single kind, i.e., a construction master key and lock and unlock the cylinder locks at the specific dwellings by use of the single kind of construction master key commonly.
  • the construction master key is no longer effective or usable for the purpose.
  • the special key system works in such manner that in case that a dweller of the new apartment or a guest staying at the hotel room loses an owner key, or changes to a next dweller or guest, when the cylinder lock is once operated by a new owner key (a second, third or sequential owner key, usually called "a change key"), the owner key previously used becomes no longer effective or usable.
  • a principle of the conventional key-change system will be explained with referring to a conventional cylinder lock shown in Figs. 14 to 20.
  • a portion of the key having a larger width is defined as sides (or side surfaces), and that smaller in width as the back.
  • the first key k1 causes, with a flat part kd1 on the side, one e (e1) of the six auxiliary tumblers, for example, nearest the inlet of the key hole, to be urged up into the chamber in the cylinder a accomodating the tumbler b, i.e., to be expelled from the plug c and be aligned at the lower end with a share line L as shown in in Figs. 16 and 17.
  • the key k1 is then turned to rotate the plug c, and the auxiliary tumbler e (e1) falls in a recess f by a spring biasing the tumbler b in the cylinder a during rotation of the plug c, thereby causing the auxiliary tumbler e (e1) to be removed from the concerned chamber (see Fig. 19).
  • a second auxiliary tumbler e2 in the condition shown in Fig. 18 may fall in the recess f to be removed from the concerned chamber in the same manner as seen in Fig. 19, and other auxiliary tumblers e3 to e6 may be consecutively removed in the same manner.
  • a tumbler b (b1) in the cylinder a corresponding to the auxiliary tumbler e1 falls in the chamber in the plug c (from which the auxiliary tumbler e1 has been removed) as shown in Fig. 20 and extends across the share line L.
  • the construction key kc cannot rotate the plug c, i.e., the construction key is no longer able to operate the cylinder lock.
  • a second owner key k2 (usually called a "change key") is handed over or transferred from the manager to that dweller or guest having lost the first key k1 or the new dweller or guest of hotel.
  • the key-change can be continued to a final key, i.e., carried out, for example, six times to a sixth key for a cylinder lock including six auxiliary tumblers e.
  • the conventional key-change system using the conventional cylinder locks is so structured that when the cylinder lock is once operated by use of a new key, the patterns of the tumblers in the cylinder lock for unlocking the same are changed and cannot be recovered.
  • the conventional key-change system is not applicable to the master key system described hereunder.
  • the master key system provides that a plurality of cylinder locks each mounted to respective dwellings or hotel rooms can be locked and unlocked by use of a common key of a single kind.
  • the master key system is essential to crime prevention and security for the multiple dwelling houses, multiple accomodation facilities, such as rental apartments and hotels.
  • the conventional master key system has a fear that the master key when lost or stolen could be used for illegally unlocking every house, resulting in that not only the master key but also the cylinder locks and keys for all the dwellings or rooms concerned are to be replaced with new ones.
  • a key-change system for a cylinder lock comprises a cylinder lock having a plug and a cylinder accomodating therein upper and bottom tumblers respectively, and a fitting key which is inserted into a key hole in the plug to cause the upper and bottom tumblers to be aligned with a share line between the cylinder and plug, so that the plug is enabled to be rotated in the cylinder to allow the cylinder lock to be unlocked, and also auxiliary tumblers being interposed between the upper and bottom tumblers and removable therefrom to enable the key-change, wherein the key includes both change key having s a recess on the back for removing the auxiliary tumblers and a key having no such recess on the back, so that use of a new change key prevents re-use of a change key previously used.
  • the change key referred to herein may include an owner key, which is assigned to each dweller (or guest) of the respective dwellings (or rooms of hotel), and a second master key or second grand master key of a set of master keys or grand master keys which are a controller's key controlling the cylinder locks at all dwellings or rooms of hotel concerned.
  • FIG. 1 A first example of embodiments of the key-change system for a cylinder lock according to the present invention will be detailed with referring to Figs. 1 through 10.
  • An auxiliary tumbler 5 (51 to 56 specifically) in the form of a ball is interposed between the upper and bottom tumblers 3 and 4 and may be otherwise in the form of a pin or a disc.
  • a master key which controls or excels (as having the same function as of) an owner key (described later) as seen in the systematic view shown in Fig. 1 and is flat at the side to cause the auxiliary tumblers 5 to be pushed out of the plug 2 and cause the tops of the bottom tumblers 4 to be aligned with the share line L as seen in Fig. 4.
  • the owner key is generally designated by 8, and for the convenience of explanation specifically called 8a1 for the one that is first used by the first dweller of the apartment A, 8a2 for that one that is used when the first dweller loses the first key 8a1, or is used by the second dweller when the first dweller changes to the same, and similarly 8a3, 8a4, 8a5 and 8a6 in the order.
  • the owner key 8a2 secondly delivered up does, as seen in Fig. 10, have at the side a flat portion which pushes out, for example, a second auxiliary tumbler 52 (nearer the inlet of the key hole) from a chamber differing from that chamber (which had accomodated the auxiliary tumbler 51 removed by the first owner key 8a1) toward or into a corresponding chamber in the cylinder containing the upper tumbler 3.
  • the owner key 8a2 has further at the back a recess 82 for removing the auxiliary tumbler 52.
  • a master key for the construction key 6 can be made or prepared by including the dimple-like cuts as a common element, and the master key (designated by a reference numeral 7 in Fig. 4) is usable for locking and unlocking the cylinder locks at every apartment or a plurality of cylinder locks in a limited extent during the interior finishing.
  • the master key 7 which is flat wholly at the side surface, is inserted into the cylinder lock during the interior finishing, so that all the auxiliary tumblers 5 in the cylinder lock (at every apartment of the multiple dwelling house) are, as shown in Figs. 4 and 5, pushed out of the chambers accomodating the bottom tumblers 4, i.e., the upper ends of the bottom tumblers 4 are aligned with the share line L irrespective of existence or non-existence of the auxiliary tumblers 5.
  • the master key 7 is usable for locking and unlocking the cylinder locks at every apartment or a plurality of cylinder locks in a limited extent during the interior finishing.
  • the master key 7 (which is flat wholly at the side to enable the upper ends of the bottom tumblers 4 to be aligned with the share line irrespective of existence or non-existence of the auxiliary tumblers 5) is usable for locking and unlocking the cylinder locks, and the function of master key works to the final stage of key-change performed through the key-change operation described later.
  • the second owner key 8a2 does, as seen in Fig. 10, have a part (differing from that part of the first owner key 8a1 removing the auxiliary tumbler 51), i.e., a flat portion (and a recess 82) for removing the second auxiliary tumbler 52.
  • the dweller having lost the first owner key 8a1 or the new dweller uses the key 8a2 to unlock the cylinder lock, so that similarly to the foregoing key-change from the construction key 6 to the first owner key 8a1, use of the first owner key 8a1 is prevented at this stage, thereby preventing illegal unlocking of the cylinder locks.
  • the key-change can be similarly continued to a final owner key 8a6 having a part for removing a final auxiliary tumbler 56.
  • the key-change can be performed six times for a cylinder lock using six auxiliary tumblers 5.
  • Those features and effects can be similarly provided in the cylinder locks at other apartments B, C, etc.
  • the key-change function is similar to the conventional cylinder lock with key-changing being possible but differs therefrom in that the function of master key can be kept to the final key-change operation.
  • all the owner keys 8a to 8f including a key(s) to be changed employ keys adapted to cause the first and second auxiliary tumblers 51 and 52 to be pushed out of the plug so as to cause the upper ends of the bottom tumblers 4 to be aligned with the share line.
  • the first and second auxiliary tumblers 51 and 52 are not used in a usual key-change.
  • the grand master key 7G1 to be first used is provided at the side with a dimple-like cut for causing the first auxiliary tumbler 51 to fall in a chamber accomodating a bottom tumbler 4, and the second grand master key 7G2 is adapted to cause the first auxiliary tumbler 51 to be pushed out of the plug and also cause a corresponding bottom tumbler 4 to be aligned at its upper end with the share line.
  • the second grand master key 7G2 is provided at the back with a recess(es) 7G21 as shown in Fig. 13 for accomodating the auxiliary tumbler 51 pushed out toward the upper tumbler.
  • the grand master key 7G1 to be first used has at the side a dimple-like cut for causing a first auxiliary tumbler 51 in every cylinder lock concerned to fall in a chamber accomodating the bottom tumbler 4 and can operate all the concerned cylinder locks by means of the dimple-like cut as a common element.
  • the first auxiliary tumbler 51 falls in the recess 7G21 formed at the back of the key in the midst of the unlocking operation and leaves the recess to be removed when the grand master key 7G2 is pulled out.
  • a master key 7 or an owner key 8 (which adapted to cause the upper ends of bottom tumblers 4 to be aligned with the share line irrespective of existence or non-existence of the auxiliary tumblers 5) is inserted into the cylinder lock from which the first auxiliary tumbler 51 has been removed, the cylinder lock can be locked and unlocked by the master key 7 or owner key 8 which keys therefore do not need to be changed or replaced.
  • the two auxiliary tumblers 51 and 52 among those used in the key-change system referred to in embodiment 1 are made use of and the times of key-changing by owner keys are reduced.
  • measures for disposing or preventing losing or theft of the master keys or grand master keys may be taken by use of any chambers other than those for the tumblers 51 and 52, so that reduction of times of key-changing can be avoided.
  • a key-change system for a cylinder lock wherein auxiliary tumblers 5 are interposed between upper tumblers 3 and bottom tumblers 4 and removed to enable the key-change, the key including both change key 8 having a recess 81 on the back for removing the auxiliary tumblers 5 and key having no such recess 81 on the back, so that use of a new change key prevents re-use of a change key previously used.

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  • Lock And Its Accessories (AREA)
EP98119879A 1997-10-21 1998-10-20 Système de changement de clé pou serrure à panneton Withdrawn EP0918124A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP308024/97 1997-10-21
JP30802497A JPH11125039A (ja) 1997-10-21 1997-10-21 シリンダー錠におけるキーチェンジシステム

Publications (1)

Publication Number Publication Date
EP0918124A1 true EP0918124A1 (fr) 1999-05-26

Family

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Family Applications (1)

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EP98119879A Withdrawn EP0918124A1 (fr) 1997-10-21 1998-10-20 Système de changement de clé pou serrure à panneton

Country Status (2)

Country Link
EP (1) EP0918124A1 (fr)
JP (1) JPH11125039A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1607553A2 (fr) * 2004-06-15 2005-12-21 Keso Ag Serrure cylindrique
US7290418B2 (en) 2004-07-30 2007-11-06 Ez Change Lock Company, Llc Programmable lock with a controlled programming position
EP1975351A1 (fr) * 2007-03-28 2008-10-01 MOTTURA SERRATURE DI SICUREZZA S.p.A. Serrure à possibilité de changement de clé
US7533550B2 (en) 2003-05-08 2009-05-19 Ez Change Lock Company Rapid-change lock
US7802455B2 (en) 2007-05-07 2010-09-28 Janaka Limited Partnership Programmable lock having incidental change control
US7905125B2 (en) 2005-02-25 2011-03-15 Janaka Limited Partnership Programmable lock with integral change tooling

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3183692A (en) * 1963-08-28 1965-05-18 Yale & Towne Inc Construction lock cylinder
US4440009A (en) * 1981-12-07 1984-04-03 Innovative Research Corporation Rekeyable lock method and apparatus
EP0217586A1 (fr) * 1985-09-19 1987-04-08 DOM-Sicherheitstechnik GmbH & Co. KG Serrure à cylindre
EP0250701A2 (fr) * 1986-06-24 1988-01-07 EVVA - Werk Spezialerzeugung von Zylinder-und Sicherheitsschlössern Gesellschaft m.b.H. & Co. Kommanditgesellschaft Serrure cylindrique
US4741188A (en) * 1985-07-16 1988-05-03 Smith Jerry R Rekeyable master and user lock system with high security features

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3183692A (en) * 1963-08-28 1965-05-18 Yale & Towne Inc Construction lock cylinder
US4440009A (en) * 1981-12-07 1984-04-03 Innovative Research Corporation Rekeyable lock method and apparatus
US4741188A (en) * 1985-07-16 1988-05-03 Smith Jerry R Rekeyable master and user lock system with high security features
EP0217586A1 (fr) * 1985-09-19 1987-04-08 DOM-Sicherheitstechnik GmbH & Co. KG Serrure à cylindre
EP0250701A2 (fr) * 1986-06-24 1988-01-07 EVVA - Werk Spezialerzeugung von Zylinder-und Sicherheitsschlössern Gesellschaft m.b.H. & Co. Kommanditgesellschaft Serrure cylindrique

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7533550B2 (en) 2003-05-08 2009-05-19 Ez Change Lock Company Rapid-change lock
EP1607553A2 (fr) * 2004-06-15 2005-12-21 Keso Ag Serrure cylindrique
US7181937B2 (en) 2004-06-15 2007-02-27 Keso Ag Locking cylinder
EP1607553A3 (fr) * 2004-06-15 2010-06-30 Keso Ag Serrure cylindrique
US7290418B2 (en) 2004-07-30 2007-11-06 Ez Change Lock Company, Llc Programmable lock with a controlled programming position
US7905125B2 (en) 2005-02-25 2011-03-15 Janaka Limited Partnership Programmable lock with integral change tooling
EP1975351A1 (fr) * 2007-03-28 2008-10-01 MOTTURA SERRATURE DI SICUREZZA S.p.A. Serrure à possibilité de changement de clé
CN101275445B (zh) * 2007-03-28 2013-03-27 莫图拉保险锁股份公司 可重新键合的圆筒锁
US7802455B2 (en) 2007-05-07 2010-09-28 Janaka Limited Partnership Programmable lock having incidental change control

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