Classifications

• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B35/00—Locks for use with special keys or a plurality of keys ; keys therefor
  • E05B35/003—Locks for use with special keys or a plurality of keys ; keys therefor for keys with movable bits
• • 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
  • E05B31/00—Cylinder locks with both tumbler pins or balls and plate tumblers
• • 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

Definitions

• the invention relates to a cylinder lock and associated key and key blank for producing the key, which can be implemented for the configuration of locking systems with an increased security for living houses, public etc. buildings, as well for cabinets, safes, padlocks etc.
• Cylinder lock and associated key and key blank therefore is known BG 61702 Bl.
• the known solution consists of a cylinder core rotatable mounted in a housing, having a key channel for the insertion of the key.
• the respective key blank consists of an elongate shaft portion disposed along the general axis and determining first and second opposite flat surfaces jointed by cramped side surfaces.
• first guide channel axis On the first wide surface of the key blank there are formed longitudinal guide channels along the first guide channel axis, which is parallel to the general axis.
• first movable displaceable element along first movable axis, which is perpendicular to the first guide channel axis, and located from the first flat surface till the second flat surface being axially shifted along the first movable axis, from second flat surface inwards to the first flat surface, so that when at least one first movable displaceable element is hidden with respect to the second flat surface, it is outwardly protruded of the first flat surface.
• second guide channel axis On the second wide surface of the key blank there are also formed guide channels along second guide channel axis, which is parallel to the general axis and to the first guide channel axis.
• at least one second movable displaceable element along second movable axis, which is perpendicular to the second guide channel axis and parallel to the first movable axis.
• Said movable element is also axially shifted along the second movable axis, from first flat surface inwards to the second flat surface, so that when at least one second movable displaceable element is hidden with respect to the first flat surface, it is outwardly protruded of the second flat surface.
• a key relevant to the cylinder lock is produced from the key blank, as along first and second channel guide axis, on the both surfaces, there are provided cuts in a straight line defining a relevant key combination, including a movable elements being selectable configurable to provide apart of the key combination.
• Said cylinder lock has a disadvantage - it is vulnerable to burglary actions, since all decoding key elements being protruded in the key channel are loaded under springs, thus allows their quick overcoming and lock's cam approach, and respectively the lock opening.
• the present invention seeks to provide a cylinder lock with associated key and a key blank to produce a key with an increased security, that cylinder lock also has an optimum simplified construction, which is technologically effective in the same time, providing an increased number of the coding possibilities and a possibility for control over the key blanks and unauthorized key duplicating.
• a cylinder lock consisting of housing and a core rotatably mounted therein, having a key channel for the key insertion.
• One-sided the key channel, respectively in the core and in the housing there are formed coaxial bores, wherein are axially placed respectively basic core pins and housing pins being loaded by springs.
• at least one additional pin assembly which includes a pushing pin loaded by a spring and being protruded in the key channel.
• the profiled slides are "isosceles trapezium" shaped with identical side protrusions provided to block into respectively formed housing recesses in the housing, as well as at least one protrusion with selective location on the big trapezium base protrudes in the key channel.
• side core bores radially in the core, sidelong the key channel, in planes being joined in a sharp angle with the plane of the key channel, side core pins being disposed in the said side core bores, and two longitudinal channels inside the housing are formed with a configuration corresponding to the side core pins configuration.
• the key blank to produce a key associated to the cylinder lock comprises a grip portion, an elongate shaft portion disposed along the general axis and determining first and second opposite flat wide surfaces jointed by cramped side surfaces, as longitudinal guide channels are formed on the first wide surface one-sided and parallel to the general axis, whilst the same channels on the second wide surface are symmetrically formed on the other side of the general axis and parallel to the same general axis, as there are movable elements inserted in the elongate shaft portion.
• At least one pair of rectangular pass holes is formed, which holes are disposed symmetrically on both sides of the general axis which is parallel to the longitudinal pass holes axes, so that in each one there are mounted movable elements on a general key pin, which is fixed in a transverse key hole of the key blank passing through the middle of the pair of rectangular pass holes crosswise the general axis, and the movable elements have barrel shaped body with a center hole through which passes over the general key pin.
• the movable elements perform free rotation around the general key pin, and their maximum outer diameter is bigger than the thickness (d) of the key blank, but smaller than l,5d, whilst their minimum inside diameter is bigger than the diameter of the general key pin.
• the key associated to the cylinder lock, produced from the key blank comprises a grip portion, an elongate shaft portion disposed along the general axis and determining first and second opposite flat wide surfaces jointed by cramped side surfaces, as longitudinal guide channels are formed on the first wide surface, one-sided and parallel to the general axis, whilst the same channels on the second wide surface are symmetrically formed on the other side of the general axis and parallel to the same general axis. Between said guide channels in both surfaces in a straight line there is formed basic dimple combi-nation, as there are movable elements inserted in the elongate shaft portion.
• At least one pair of rectangular pass holes is formed, which holes are disposed symmetrically on both sides of the general axis which is parallel to the longitudinal axes of the pass holes, so that in each pass hole there are mounted movable elements on a general key pin fixed in the key and placed in a transverse key hole passing through the middle of the pair of rectangular pass holes crosswise the general axis, and the movable elements are barrel shaped with a center hole through which passes over the general key pin.
• the movable elements perform free rotation around the general key pin, and their maximum outer diameter is bigger than the thickness (d) of the key, but smaller than l,5d, whilst their minimum inside diameter is bigger than the diameter of the general key pin.
• on the first and second opposite wide flat surfaces of the key, opposite the longitudinal guide channels, but on the other side of the general axis there is formed lengthwise at least one relatively deep wave groove, outwardly opened and extended from direction of the key tip, and a side dimple combination is formed on the both opposite cramped side surfaces, so the key can be used in anyone of both positions, turned at 180° in relation to each other.
• a cylinder lock in combination with associated key inserted in the key channel provides that at least one built-in movable element into the key is found to be centered between at least one additional pin assembly and its opposite basic core pin, whereat each profiled slide is found to be engaged by means of its protrusion in a predetermined position in at least one wave groove formed on the key, as all profiled slides are in the core together with all basic and side core pins.
• the cylinder lock, in accordance with the invention is applicable to door locks implemented like double, half or knob cylinder, to padlocks and others, moreover it may be fulfilled with each required configuration.
• the advantage of the cylinder lock with associated key and key blank therefore, in accordance with the invention consists in the increased number of the coding possibilities, which are four and are realized in the key coding, respectively by means of the basic and the side dimple combinations, the built-in movable elements into the key as well, and the wave groove on the key, all these in order to obtain the locking coding combination, are selectively formed together with the respective decoding key elements, the last are disposed rationally in the cylinder lock to make its construction maximum simplified but techno-logically effective in the same time.
• Another advantage concerns the additional pin assembly and its opposite basic core pin used to decode the built-in rotating elements into the key, which besides their general function have another anti-burglary function, since the additional pin assembly is right next to the key channel hole, and its pushing pin and opposite basic core pin are made of a hardened metal.
• the profiled slides intended to decode one key combination being set in the selectively formed wave groove on the key, protrude in the key channel, without spring pressure, and move freely in the core, thus additionally reduces the risk of an unauthorized access to the cam of the cylinder lock by means of burglary tools.
• the key blank provided for a key associated to the cylinder lock can not be executed by means of the widespread conventional locksmiths tools, thus to ensure a control over the key blanks, respectively over the key duplicating.
• Fig. 1 illustrates a cross-section of the cylinder lock with associated key inserted in the key channel.
• Figs. 2, 3 and 4 are cuts in typical sections of the cylinder lock with associated key inserted in the key channel.
• Fig. 5 represents a perspective illustration of the key blank for producing the associated key.
• Figs. 6A and 6B illustrate the key.
• Fig. 7 illustrates the cross-section of the key, respectively the key blank, showing the movable inserted elements construction and assembly.
• the cylinder lock 1 comprises a housing 2 and a core 3 rotatably mounted therein, said core 3 has a key channel 4 for the key 5 insertion.
• the basic core pins 6 are intended to engage with a basic dimple combination 32, realized as dimples on the wide flat opposite surfaces 24 and 25 on the respective key 5 of the cylinder lock 1.
• a basic dimple combination 32 realized as dimples on the wide flat opposite surfaces 24 and 25 on the respective key 5 of the cylinder lock 1.
• the number of the basic core pins 6 is six, but in other embodiments the basic core pins 6 may be more or less than six.
• bore 37 In the core 3, on the other key channel 4 side, there is formed bore 37, disposed opposite and coaxially to one pair of bores 35 and 36, as an additional pin assembly 9 is disposed in said bore 37, which includes pushing pin 10 loaded by a spring 11 and being protruded in the key channel 4.
• the pushing pin 10 and its respective opposite basic core pin 6 are made of a hardened metal.
• side core bores 13 radially in the core 3, sidelong the key channel 4, in planes being joined in a sharp angle with the plane of the key channel 4, as side core pins 14 are disposed in the said side core bores 13.
• said longitudinal channels 38 and 39 are meant to block the side core pins 14 if an incorrect key is being inserted outside or inside the cylinder lock 1.
• the number of the side core pins 14 is five, but in other embodiments this number may be more or less than five.
• a core recesses 15 are formed, wherein a profiled slides 16 are disposed.
• the number of the profiled slides 16 is four, but in other embodiments the profiled slides 16 may be more or less than four.
• the said profiled slides 16 are "isosceles trapezium" shaped with identical side protrusions 17 to stop in corresponding housing recesses 18 and 19 being made lengthwise in the housing 2, also one protrusion 20 with a selective location on the big trapezium base protrudes in the key channel 4.
• the profiled slides 16 have only one protrusion 20, as in the present example the wave groove 21 on the key 5 which engages the said protrusion 20, is also one.
• the key blank 22 to produce a key 5 comprises a grip portion 34, an elongate shaft portion 23 disposed along the general axis and determining first 24 and second 25 opposite flat surfaces, jointed by cramped side surfaces 26, as longitudinal guide channels
• movable elements 12 on a general key pin 29 said general key pin 29 is fixed in the key blank 22 positioned in a transverse key hole 30 therein, which passes through the pair of rectangular pass holes 28 crosswise the general axis.
• the movable elements 12 have barrel shaped body with a central hole 31 through which passes over the general key pin 29. Said movable elements 12 perform free rotation around the general key pin 29 and their maximum outer diameter is bigger than the thickness (d) of the key blank 22, but smaller than l,5d, whilst their minimum inside diameter is bigger than the diameter of the general key pin 29.
• the respective key 5 produced of the key blank 22, comprises a grip portion 34, an elongate shaft portion 23, disposed along the general axis and determining first 24 and second 25 opposite flat wide surfaces jointed by cramped side surfaces 26, as longitudinal guide channels 27 and 27a are formed on the first wide surface 24 one-sided and parallel to the general axis, whilst the same channels 27 and 27a on the second wide surface 25 are symmetrically formed on the other side of the general axis and parallel to the same general axis. Between said guide channels 27 and 27a, in both surfaces in a straight line there is formed basic dimple combination 32, and a side dimple combination 33 is formed on both cramped side surfaces 26.
• one pair of rectangular pass holes 28 is formed, disposed symmetrically on both sides of the general axis which is parallel to the longitudinal axes of the pass holes 28.
• said general key pin 29 is fixed in the key 5 positioned in a transverse key hole 30 therein, which passes through the pair of rectangular pass holes 28 crosswise the general axis.
• the movable elements 12 have barrel shaped body with a central hole 31 through which passes over the general key pin 29. Said movable elements 12 perform free rotation around the general key pin 29 and their maximum outer diameter is bigger than the thickness d of the key 5, but smaller than l,5d, whilst their minimum inside diameter is bigger than the diameter of the general key pin 29. Besides, on the first 24 and second 25 opposite wide flat surfaces of the key 5, opposite the longitudinal guide channels 27 and 27a, but on the other side of the general axis there is formed lengthwise a relatively deep wave groove 21, outwardly opened and extended from direction of the key 5 tip, thus the key 5 can be used in anyone of both positions, turned at 180° in relation to each other.
• the cylinder lock using an associated key produced of the relevant key blank operates as follows:
• the side core pins 14 engage in the dimples of one of the side dimple combinations 33 provided on the side cramped opposite surfaces 26 of the key 5, so the side core pins 14 completely fall into the core 3 and make its rotation possible if the rest key combinations were also correctly decoded.
• the side dimple combination 33 on the key 5 is incorrect, the relevant side core pins 14 fall into the longitudinal channels 38 or 39 in the housing 2, depending on how the key 5 is inserted in the cylinder lock 1- outside or inside, and block the core 2 making its rotation impossible even all rest key combinations on key 5 were correctly decoded.

Landscapes

• Lock And Its Accessories (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=39933592

Family Applications (1)

Country Status (4)

Cited By (1)

Families Citing this family (14)

Family Cites Families (6)

• 2008
  • 2008-07-16 EP EP08783088.1A patent/EP2126256B1/de active Active
  • 2008-07-16 UA UAA200911396A patent/UA96485C2/uk unknown
  • 2008-07-16 WO PCT/BG2008/000010 patent/WO2009012541A1/en active Application Filing
  • 2008-07-16 RU RU2009125650/12A patent/RU2403359C1/ru active

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events