WO2019180497A1 - Serrure à mortaise dotée d'un profil de fente à clé fermée - Google Patents

Serrure à mortaise dotée d'un profil de fente à clé fermée Download PDF

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Publication number
WO2019180497A1
WO2019180497A1 PCT/IB2018/053183 IB2018053183W WO2019180497A1 WO 2019180497 A1 WO2019180497 A1 WO 2019180497A1 IB 2018053183 W IB2018053183 W IB 2018053183W WO 2019180497 A1 WO2019180497 A1 WO 2019180497A1
Authority
WO
WIPO (PCT)
Prior art keywords
lock
rows
profile
mortise
key
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/IB2018/053183
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English (en)
Inventor
Prabhakar Anant JOSHI
Salil Prabhakar JOSHI
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 WO2019180497A1 publication Critical patent/WO2019180497A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • E05B19/0052—Rectangular flat keys
    • E05B19/0058—Rectangular flat keys with key bits on at least one wide side surface of the key
    • 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
    • E05B9/041—Double cylinder locks

Definitions

  • This invention relates to locks.
  • this invention relates to mortise locks operable by a corresponding key.
  • Mortise lock is a commonly used door lock.
  • One part included in a typical mortise lock installation is a profile cylinder assembly.
  • the cylinder In a conventional mortise cylinder assembly the cylinder is fitted inside a housing and it has a slit for a key entry which is offset of a center and is open at the cylinder outer diameter.
  • Single axis or multi axes pin cylinders are used in a mortise lock.
  • the key has serrations on one edge of a flat face to lift locking pins and align the contact surface of the housing and cylinder.
  • the key will have fewer key combinations and therefore, can cause a security issue.
  • a dimple type key In multi axes locks, a dimple type key is used.
  • the dimple type key provides more key combinations, thereby eliminating security issues. But it is very critical to design, manufacture, and assemble this type of locks, thus increases complexity and reduces the productivity.
  • Another one disadvantage associated with the multi axes locks is that, it is critical to make a master key combination in mortise cylinder profile.
  • the main aim of a lock manufacturer is to design and manufacture good quality locks providing high security, large number of key combinations, different key arrangements like individual customer key, master key, grand master key and emergency key. Further, it should be possible to manufacture locks and keys in large quantities without requiring very complex and expensive machines or processes.
  • An object of present disclosure is to provide a mortise lock assembly with a closed key slot profile in a cylinder, which is having multi axes pin cylinder assembly i.e. dimple key.
  • Another object of the present disclosure is to provide a mortise lock assembly with a closed key slot profile, which is easy to manufacture and assemble at low cost.
  • the present disclosure envisages a mortise lock assembly with a closed key slot profile.
  • the mortise lock assembly comprises a profiled cylinder lock housing, two angularly displaceable lock cylinders, and an arrestor means.
  • the profiled cylinder lock housing comprises two spaced apart cylindrical hollow members, a central slot and a connecting member.
  • the two spaced apart cylindrical hollow members define annular spaces.
  • two rows of holes configured on profile cylinder lock housing define parallel passages in the connecting member extending to the annular spaces of the cylindrical hollow member. The axes of each of the rows of holes are in planes parallel to each other.
  • each of the lock cylinders is provided with a closed key slot profile for inserting a key.
  • two rows of holes defining passages are configured on each of the lock cylinders, wherein the axes of each of the rows of holes are in planes parallel to each other.
  • the arrestor means comprises two rows of locking elements.
  • each of the locking elements comprises a spring, a pressure pin, and a lock pin.
  • each of the locking elements has locking pins of a pre-determined variable length, and is fitted within passages of the cylinder lock housing and extends into the two rows of passages in each of the lock cylinders.
  • the arrestor means is configured to be displaced between a locking operative configuration and an unlocking operative configuration.
  • the displacement between locking operative configuration and an unlocking operative configuration is done by the key, having means to displace each of the lock pin projecting into the closed key slot profile to prevent and allow angular displacement of the lock cylinders with reference to the cylinder lock housing.
  • the closed key slot profile configured on the lock cylinder has a profile selected from a group consisting of rectangular, square, and any polygonal shape.
  • the two rows of holes configured on each of the lock cylinders is configured to extend to the closed key slot profile for facilitating insertion of the key.
  • the lock cylinders have a means adapted to align the rows of parallel passages relative to each other in an assembled operative configuration of the mortise lock assembly.
  • the mortise lock assembly further comprises an angularly displaceable crank assembly.
  • the crank assembly is fitted in the central slot of the cylinder lock housing, and is configured to be angularly displaced under the influence of the key.
  • Fig. 1A and Fig. IB illustrates an isometric view of conventional cylinder for single axis & multi axes pins respectively;
  • Fig. 1C & 1D illustrate a cross sectional view of cylinder having multi axes and single axis pins respectively, of Fig.1A and Fig.1B;
  • Fig. 2 illustrates an exploded view of the mortise lock assembly, in accordance with an embodiment of the present disclosure
  • Fig. 3 illustrates an isometric view of a mortise lock assembly of Fig.2 with a key inserted in the lock
  • Fig. 4A illustrates a top view of a profile cylinder mortise lock assembly, of Fig. 2;
  • Fig. 4B illustrates a sectional elevation of the mortise lock assembly along a sectional line A- A shown in Fig. 4A
  • Fig. 5A illustrates a top view of the profile cylinder mortise lock assembly, of Fig. 2;
  • Fig. 5B illustrates a sectional elevation of the mortise lock assembly along a sectional line B- B shown in Fig. 5A;
  • Fig. 6A illustrates a front view of a lock cylinder of the mortise lock assembly, of Fig. 2;
  • Fig. 6B illustrates a top view of the lock cylinder of the mortise lock assembly, of Fig. 6A
  • Fig. 6C illustrates the sectional elevation of the lock cylinder of the mortise lock assembly along sectional line D-D illustrated in Fig. 6A, the enclosed key slot profile is in the center of cylinder;
  • Fig. 6D illustrates an isometric view of the lock cylinder of the mortise lock assembly, of Fig. 6A
  • Fig. 7A illustrates a front view of a profile cylinder lock housing of the mortise lock assembly, of Fig. 2;
  • Fig. 7B illustrates a top view of the profile cylinder lock housing of the mortise lock assembly, of Fig. 7A.
  • Fig. 7C illustrates a sectional view of the profile cylinder lock housing of the mortise lock assembly, along a sectional line G-G illustrated in Fig. 7B ;
  • Fig. 8A illustrates a top view of the key of the mortise lock assembly, of Fig.2;
  • Fig. 8B illustrates a front view of the key of the mortise lock assembly, of Fig. 8A.
  • Fig. 8C illustrates a perspective view of the key of the mortise lock assembly, of Fig. 8A.
  • the present disclosure envisages a mortise lock assembly with a closed key slot profile, which facilitates different key combinations. Further, the mortise lock assembly provides secured locking.
  • the closed key slot is located in the center of cylinder. It is surrounded by metal on all sides as there is no open slot in cylinder. This makes the cylinder stronger as it has no open slot.
  • the Key is located in the center of cylinder hence it does not touch inside wall of lock housing. There is no friction between the key & inside surface of lock housing. This results in very smooth rotation of key. The gap between cylinder & hole of lock housing does not affect the working of lock assembly.
  • the mortise lock assembly of the present disclosure, is hereinafter described with reference to Fig.lA to Fig. 8C.
  • the mortise lock operable with a key is generally indicated by reference numeral 100.
  • Fig. 1A illustrates an isometric view of a conventional cylinder with open profiled key slot and single axis pin arrangement
  • Fig. IB illustrates an isometric view of a conventional cylinder with open key slot and multi axes pin arrangement.
  • key entry slot is open from the outer diameter of the cylinder as shown in Fig 1C & ID.
  • a profiled key slot cylinder lock with single axis pin cylinder shown in Fig.lA is easy to manufacture and assemble, but is configured to provide fewer key combinations.
  • the profiled key slot cylinder lock with multi axes pin cylinder shown in Fig. IB provides good secured locking, however it is cumbersome task to manufacture and assemble.
  • the mortise lock assembly with a closed key slot profile 100 (hereinafter referred as“mortise lock assembly 100”) is operable with a key 30.
  • the mortise lock assembly 100 consists of a profile cylinder lock housing 20 comprising two spaced apart cylindrical hollow members 20A and 20B, a connecting member 24, and a central slot 26 (illustrated in Fig. 7B & 7C).
  • the cylindrical hollow members 20A and 20B define annular spaces 22.
  • the central slot 26 is configured between the spaced apart two cylindrical members 20A and 20B.
  • two rows of holes 28 are configured on the profiled cylinder lock housing 20.
  • the two rows of holes define parallel passages in the connecting member 24 which are configured to extend to the annular spaces 22 of the cylindrical hollow members 20A and 20B.
  • axes of each of rows of holes of the two rows of holes 28 are in two planes parallel to each other.
  • the mortise lock assembly 100 also comprises of two angularly displaceable lock cylinders 10A and 10B.
  • the lock cylinders 10A and 10B are fitted within the cylindrical hollow members 20 A & 20B.
  • Each of the lock cylinders is provided with the closed key slot profile 12 for inserting the key.
  • the key slot profile for insertion of the key is closed section, whereas the conventional key slot profile for insertion of the key is open cross section as shown in Fig. 1C & ID.
  • the closed key slot profile 12 can have different types of cross-sections.
  • the closed key slot profile configured on the lock cylinder has a profile selected from a group consisting of rectangular, square, and any polygonal shape.
  • the closed key slot profile configured on the mortise lock assembly 100 is rectangular. Further the position of the profile is at the center or it can be offset with center.
  • the lock cylinders 10A and 10B are provided with two rows of holes 14, defining parallel passages. Further, the two rows of holes 14 configured on each of the lock cylinders 10A and 10B are configured to extend to the closed key slot profile 12 for facilitating insertion of the key 30. In an embodiment, the axes of each the two rows of holes 14 have planes parallel to each other.
  • the two rows of holes 28 that are configured on the profile cylinder lock housing 20 and are further configured to align with the two rows of holes 14 configured on the lock cylinders 10A and 10B in a locked position of the mortise lock assembly 100.
  • the mortise lock assembly 100 also comprises of an angularly displaceable crank assembly 40 (illustrated in Fig. 2) fitted in the central slot 26.
  • the crank assembly 40 operates the dead bolt (not specifically shown) of the lock assembly.
  • the crank assembly 40 further includes two rotor assemblies 50 fitted within, coupled with each of the lock cylinders 10A and 10B and the crank assembly 40.
  • the crank assembly 40 is configured to be angularly displaced under the influence of the key 30.
  • the mortise lock assembly 100 further consists of an arrestor means.
  • the arrestor comprises first rows of locking elements, wherein each of the locking elements consisting of a spring 80, a pressure pin 70 and a lock pin 60 of predetermined variable length. These locking elements are fitted within the parallel passages of the lock housing 20. Further, each locking element extends into rows of parallel passages in each of the lock cylinders 10A and 10B.
  • each of the locking pins 60 having a portion thereof and a contact surface 62 extends into each of the closed key slot profile 12 provided in the lock cylinders 10A and 10B.
  • the key used in the present disclosure is a dimple key which is having dimples on two flat faces of key.
  • the mortise lock is provided with a key 30 with rows of dimples 32 profiled on both the faces.
  • the key 30 is adapted to slidingly enter the closed key profile 12 in the lock cylinder 10A or 10B.
  • the rows of dimples 32 are adapted to engage the locking pins 60 in a unique sequence for aligning the contact surface 62 and thereby operatively displace the lock cylinder 10A or 10B with reference to the profile cylinder lock housing 20 in an unlocking operative configuration of the mortise lock assembly 100.
  • the axes of the locking pins 60 are positioned perpendicular to the face of the key 30, thereby providing easy and in-depth engagement of the locking pins 60 enabling smooth operation of a mortise lock.
  • the arrestor means is configured to be displaced between a locking operative configuration and the unlocking operative configuration.
  • the displacement between locking operative configuration and the unlocking operative configuration is done by the key, having means to displace each of the lock pin 60 projecting into the closed key slot profile 12 to prevent and allow angular displacement of the lock cylinders 10A and 10B with reference to the cylinder lock housing 20.
  • a mortise lock assembly with a closed key slot profile which:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lock And Its Accessories (AREA)

Abstract

La présente invention se rapporte au domaine des serrures à mortaise. Une serrure à mortaise avec un profil de fentes à clé fermée assure une sécurité élevée avec un grand nombre de combinaisons sécurisées. L'ensemble serrure à mortaise comprend un boîtier de verrou de cylindre profilé, deux cylindres de verrouillage à déplacement angulaire ajustés au sein du boîtier de verrou. Le cylindre de verrouillage comprend un profil de fente à clé fermée pour l'insertion d'une clé. Les deux rangées de trous sont configurées sur les cylindres de verrouillage et le boîtier de cylindre qui s'étend jusqu'au profil de fente à clé fermée. En outre, un moyen d'arrêt comprend des rangées d'éléments de verrouillage, comprenant chacun un ressort, une broche de pression et une broche de verrouillage s'étendant dans les trous dans les cylindres de verrouillage. Le moyen d'arrêt est configuré pour être déplacé entre une configuration fonctionnelle de verrouillage et une configuration fonctionnelle de déverrouillage au moyen de la clé.
PCT/IB2018/053183 2018-03-17 2018-05-08 Serrure à mortaise dotée d'un profil de fente à clé fermée Ceased WO2019180497A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201821009868 2018-03-17
IN201821009868 2018-03-17

Publications (1)

Publication Number Publication Date
WO2019180497A1 true WO2019180497A1 (fr) 2019-09-26

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Application Number Title Priority Date Filing Date
PCT/IB2018/053183 Ceased WO2019180497A1 (fr) 2018-03-17 2018-05-08 Serrure à mortaise dotée d'un profil de fente à clé fermée

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3393542A (en) * 1965-05-28 1968-07-23 777 Lock & Engineering Corp Rotary cylinder lock
US20090193862A1 (en) * 2008-02-05 2009-08-06 Talleres De Escoriaza, S.A. Lock with combination pins of non-circular section and eccentricity capable of being positioned in rotation and lock key with combination indentations difficult to reproduce fraudulently
EP3015628A1 (fr) * 2014-10-27 2016-05-04 Metalurgica Cerrajera de Mondragon, S.A. Dispositif de barillet pour serrure doté de goupilles combinées

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3393542A (en) * 1965-05-28 1968-07-23 777 Lock & Engineering Corp Rotary cylinder lock
US20090193862A1 (en) * 2008-02-05 2009-08-06 Talleres De Escoriaza, S.A. Lock with combination pins of non-circular section and eccentricity capable of being positioned in rotation and lock key with combination indentations difficult to reproduce fraudulently
EP3015628A1 (fr) * 2014-10-27 2016-05-04 Metalurgica Cerrajera de Mondragon, S.A. Dispositif de barillet pour serrure doté de goupilles combinées

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