Classifications

• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B17/00—Accessories in connection with locks
  • E05B17/04—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
• • 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
  • E05B19/0064—Rectangular flat keys with key bits on at least one wide side surface of the key and with additional key bits on at least one narrow side edge of the key
• • 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
  • E05B27/0039—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with pins which slide and rotate about their axis
• • 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
  • E05B27/0078—Asymmetrical tumbler pins, e.g. with a key operating on a radial protrusion of a tumbler pin
• • 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
  • E05B27/0082—Side bar locking

Definitions

• the present invention relates to a cylinder lock unit of the kind indicated in the preamble of claim 1.
• the cylinder lock unit comprises a housing with an upper part and lower part,
• said lower part of the housing having a cylindrical bore accommodating a rotat able key plug
• said rotatable key plug being formed in one piece and being adapted, via a torque transferring connection, to transfer a torque to a locking mechanism when the key plug is rotated,
• said upper part of the housing being provided with a central row of upper and lower locking pins in associated cavities
• said key plug having a central row of corresponding cavities for accommodating said lower locking pins in said central row
• said key plug having at least one side locking mechanism being operative independently of said central row of upper and lower locking pins
• a keyway extending axially backwards from a front end of said key plug and being configured to accommodate an associated key
• said central row of upper and lower locking pins and said side locking mechanism being arranged to engage with and lock the key plug against rotation in said lower part the housing unless said associated key is inserted into the keyway.
• the invention also relates to a cylinder lock unit of the above-defined kind, in combination of a key for unlocking the cylinder lock unit, said key comprising a grip portion and a key blade.
• the invention relates to a key for unlocking such a cylinder lock unit having a rotatable cylindrical key plug with a keyway and at least one side locking mechanism con- fined to a front region thereof.
• Such lock and key systems, cylinder lock units, and keys are frequently used in locking systems with a large number of lock units serving e.g. as door locks.
• the main object of the present invention is to further increase the security and provide a cylinder lock unit with a high security side locking mechanism which is very difficult to manipulate so as to open the lock without using a properly cut key and which will also permit the key plug to possibly accommodate an extra lock component in the back region of the key plug, e.g. a part of a torque transferring connection, a blocking mechanism for blocking full insertion of a key blade which is not correctly cut, or an electronic component which facilitates the functioning of the lock unit.
• an extra lock component in the back region of the key plug e.g. a part of a torque transferring connection, a blocking mechanism for blocking full insertion of a key blade which is not correctly cut, or an electronic component which facilitates the functioning of the lock unit.
• the housing being divided into an upper part with locking pins and a lower part
• a back region of the key plug has a minimum length of at least 50% of a total
• said back region of the key plug accommodates a rear part of the central row of
• each lateral side of the keyway being reserved for possibly accommodating at least one additional
• said front region of the key plug accommodates, on at least one lateral side of
• said at least one side locking mechanism is confined entirely within said front
• said at least one side locking mechanism comprises a longitudinal row of at least I two side locking tumblers, each interacting with the lower part of the housing, either directly or ‘ indirectly via a side bar, and [0026] said at least two coded side locking tumblers in each side locking mechanism are movable independently of each other, there being at least three different code positions for each coded side locking tumbler and a plurality of different code combinations for the at least two side locking tumblers in each said longitudinal row in said front region of the key plug.
• the relatively short front region of key plug is rather compact and preferably substantially solid, except for the keyway, the cavities for the locking pins and any recesses and holes for accommodating the side locking mechanism or mechanisms.
• each side of the keyway there is one relatively short (in the axial direction) side locking mechanism on each side of the keyway in the front region of the key plug. Then, it is possible to accommodate at least four (two or more on each side) independently movable locking tumblers being separate and independent from the conventional central locking pins. However, it is also possible5 to arrange only one side locking mechanism arranged on one lateral side of the keyway.
• the length of the front region of the key plug, where the at least one side locking mechanism is located in its entirety, is thus rather short, e.g. 50%, about 40% or about 30% of the total length of the key plug. Nevertheless, thanks to the compact structure of the side locking mech anism, it can still provide a very large number of code combinations and a high security for the cyl-0 inder lock core.
• each longitudinal row of side locking tumblers, on one or both lateral sides of the key plug may comprise at least two and preferably at least three (or even more) side locking tumblers.
• the additional lock component possibly accommodated in the back region of the key plug, on each lateral side of the keyway may form a part of the torque transferring
• connection e.g. a threaded hole for engaging with a fastening screw being connected to a door
• a key for unlocking the cylinder lock unit may be provided in combination with a key for unlocking the cylinder lock unit, the key comprising
• said key blade on at least one side thereof, has a wave-like side code pattern
• the present invention relates to a key, as such, for unlocking a cy!- inder lock unit of the kind referred to above, the key blade, on at least one side thereof, having a
• wave-like side code pattern consisting of a row of at least two side code portions being substantially
• Fig. 1 shows, in a perspective view, a lock unit according to the present inven
• Fig. 2a shows an exploded view of the various parts of the lock unit of fig. 1;
• Fig. 2b shows the key of fig. 1, in a perspective view from the other side;
• Fig. 3 shows a longitudinal section through the lock unit of fig. 1 with the key
• Fig. 4 shows a cross-section through the lock unit of fig. 1 and 2a, at the location
• Figs. 5a, 5b, 5c and 5d show the key plug of fig. 2a, in views from below, from the front end, from above and in a longitudinal section, respectively;
• Fig. 6 shows a key plug of a similar embodiment as in Fig, 5d, but with four side locking tumbler holes in a row;
• Figs. 7a, 7b, 7c and 7d show a key plug of a second embodiment which is similar to the one of Figs. 5a to 5d, but with a shorter side locking mechanism on each side of the key plug, with two locking tumblers in each side locking mechanism;
• Figs. 8a, 8b, 8c and 8d show a key plug of a modified embodiment which is similar to the one of Figs. 5a to 5d, but with only six locking pins (instead of seven locking pins in the previous embodiments) and two side locking tumblers on each side of the key plug;
• Figs. 9a, 9b, 9c, 9d, 9e, 9f, 9g and 9h show, in various views, a third embodiment having a side locking mechanism provided with a side bar which cooperates with two side locking tumblers on one lateral side of the keyway;
• Fig. 10 shows a modified embodiment of the side locking mechanism having a side bar interacting with side locking tumblers which are movable up and down and also rotatable around their own axes;
• Fig. 11 shows another modified embodiment where the side locking tumblers are each provided with a longitudinally displaced finger
• Figs. 12a, 12b, 12c and 12d show, in views corresponding to Figs. 5a, 5b, 5c and 5d, respectively, an embodiment having three side locking tumblers interacting with a side bar, on one lateral side of the keyway;
• Figs. 13a and 13b show, in sectional and perspective views, a fourth embodiment with two side bars, one on each lateral side of the keyway of the key plug;
• Fig. 13c shows a modified embodiment with a massive back region of the key plug, and two short side bars in the front region of the key plug;
• Figs. 14a and 14b show a modified embodiment of the key with two different side code patterns on each side of the key blade.
• a first embodiment of the lock unit 100 of the invention is shown in Figs. 1, 2a, 2b, 3, 4, 5a, 5b, 5c and 5d, including a cylindrical housing 200 with a rotatable key plug 300, and an associated key 40.
• the cylindrical housing 200 has a threaded rear end portion and a slightly conical front end flange.
• the lock unit 100 is normally permanently mounted in a dooror the like in order to cooperate with a door locking mechanism, as is well known per se.
• the cylindrical housing 200 includes an upper, solid part 220 and a lower part 240 forming a cylindrical bore accommodating a rotatable key plug 300.
• the rotatable key plug 300 is formed in one piece and is adapted to transfer a torque to a locking mechanism when the plug Is rotated.
• a torque transferring connection including a cam member 151 which is secured to the key plug 300 by means of two fastening screws 152a, 152b, which engage with threaded holes in a back region LI of the key plug, on each side of a keyway 320.
• the torque transferring connection may be formed by other mechanical means, e.g. with a recess in the rear end of the key plug being coupled to a mating member forming a part of a locking mechanism in a door or some other object to be locked in a closed position. If so, the back region LI of the key plug may be used for some other lock component, as indicated above. It is also possible to leave the back region of the key plug as a massive material portion, on each lateral side of the key way, as indicated in fig. 13c.
• the upper, solid part 220 of the housing 200 has a central row of parallel cavities or holes 221a, 221b, 221c, 221d, 221e, 221f and 221g, the number of cavities being seven in this particular embodiment. As will be shown below, other normal embodiments are pro vided with six such cavities in a central row.
• a longitudinal cover plate 222 will normally cover the holes 221a, etc. from above and keep a corresponding number of upper and lower locking pins 231a, etc., 232a, etc. and associated springs 235a, etc. in place.
• the key plug can also be seen in Figs. 3,4, 5a, 5b, 5c and 5d.
• the outer diameter of the cylindrical key plug is slightly smaller than the inside diameter of the bore in the lower part 240 of the housing, so that the key plug can rotate in relation to the housing 200.
• the possible rotary motion of the key plug is dependent on the positions of lower locking pins 231a, 231b, 231c, 231d, 231e, 231f, 231g shown in Fig. 2a and being movable in corresponding vertical cavities or holes 331a, 331b, 331c, 331d, 331e, 331f, 331g arranged in a central longitudinal row in the upper part of the key plug 300.
• These vertical holes 331a, etc. are located above the central keyway 320.
• the lower locking pins 231a etc. are held in place by associated top or upper pins 232a, 232b, 232c, 232d, 232e, 332f, 232g (collectively denoted 232a - 232g in Fig. 2a) and corresponding helical springs 235a, 235b, 235c, 235d, 235e, 235f, 235g (collectively denoted 235a-235g in Fig. 2a).
• the central row of corresponding cavities 331a, 331b, 331c, 331d, 331e, 33 If, 331g will accommodate the lower locking pins 231a, 231b, 231c, 231d, 231e, 23 If, 231g.
• a correctly cut key 40 will operate the cylinder lock unit so as to rotate the key plug 300 and turn the rear cam 151.
• the back region (LI in fig. 5d) of the key plug 300 is relatively long, viz. at least 50% of the total length (LI +FR1) of the key plug, measured from the back end up to a front end flange 310, whereas the front region (FR1 in fig. 5 d) of the key plug is relatively short, viz. at most 50 % of the full length thereof.
• the front region FR1 should be long enough to accommodate a side locking mechanism including a longitudinal row of at least two side locking tumblers.
• the back region (LI) of the key plug serves to accommodate the rear part of the central row of holes 331a - 331g above the keyway 320, possibly also an additional lock component, which may be a part of the torque transferring connection, such as the fastening screws 152b on either side of the keyway, or a blocking mechanism which will prevent the full insertion of an incorrectly cut key blade, or an electronic component which will facilitate or assist in the proper functioning of the lock unit.
• an additional lock component which may be a part of the torque transferring connection, such as the fastening screws 152b on either side of the keyway, or a blocking mechanism which will prevent the full insertion of an incorrectly cut key blade, or an electronic component which will facilitate or assist in the proper functioning of the lock unit.
• the key plug 300 is provided with a side locking mechanism which is located on at least one lateral side of the keyway 320 and which is confined entirely within the front region FR1 located longitudinally in front of the back region LI.
• this front region FR1 is substantially solid, except for the keyway, the cavities for the lower locking pins and any recesses and holes for accommodating the side locking mechanism itself.
• the side locking mechanism comprises at least two independently movable side locking tumblers providing a high security mechanism with at least three different code positions for each locking tumbler and a plurality of different code combinations for the side locking tumblers.
• the side locking mechanism includes three coded side locking tumblers 351a, 351b, 351c (figs. 2a and 5a) which are arranged in a row at one side of the keyway 320 of the key plug 300, in the solid front region thereof.
• the three locking tumblers are located entirely within this front region and also ra dially inside the lower part 240 of the housing.
• This location of the side locking mechanism 351a, 351b, 351c has the advantage that it will interact mainly with the lower part 240 of the housing in associated recesses or holes 242 (fig. 2a and fig. 4), next to the front end flange 310 of the key plug 300.
• Other embodiments are possible, as will be described below.
• the three side locking tumblers 351a, 351b, 351c are biased by springs 361a, 361b, 361c (collectively denoted 361a - 361c in Fig. 2a) in associated vertical cavities or holes 371a, 371b, 371c (collectively denoted 371a-371c in Fig. 4a) at some lateral distance from the keyway 320 so as to project into the keyway with a projecting finger which will cooperate with a wave-like side code pattern 41 on the key blade of the associated key 40 (fig. 2b).
• the locking tumblers 351a, etc. will move up and down in response to their contact with the side code pattern 41.
• the lower ends of the coded side locking tumblers 351a, etc. will then interact with the associated recesses or holes 242 in the lower part 240 of the housing 200.
• a number of V-shaped bittings at the upper edge portion 42 of the key 40 will interact with the central row of locking pins 231a, etc. Only when all of the lower and upper locking pins 231a, etc. and 232a, etc. and the three side locking tumblers 351a, etc. are correctly positioned within the circumference of the key plug 300, will it be possible to turn the key 40 so as to rotate the key plug 300 and unlock the cylinder lock unit.
• the side locking tumbler 351b is located in its totally retracted position within the key plug, where both of its ends are located at the shear line between the key plug 300 and the surrounding lower part 240 of the housing, and the central pin 23 If is also located with its upper end being located flush with the shear line. In this position, the key plug can be rotated or turned, provided that all other central pins and coded side locking tumblers are also confined within the key plug.
• a second embodiment illustrated in Figs. 7a, 7b, 7c and 7d, the structure is similar to the first embodiment (all the reference numerals starting with the digit 4 instead of 3), but here there is a row of coded side locking tumblers on each side of the keyway 420, each such row consisting of two independently movable side locking tumblers 451a, 451b and 461a, 461b, respectively.
• Each side locking tumbler will interact with the surrounding lower part of the housing in the same way as shown in Fig. 4.
• the back region L2 of the key plug 400 is somewhat longer in this second embodiment, and the front region FR2 is shorter, the total length L2 + FR2 being the same as in Fig. 5d.
• a modified version of the second embodiment shown in Figs. 8a, 8b, 8c and 8d, the structure is exactly the same as in the one shown in Figs. 7a, etc., except that the number of central locking pins 231a', ...231f (Fig. 8c) in the key plug 400' is six rather than seven and the total length of the key plug is a little shorter. Still, the length of the back region L2' is slightly more than half of the length of the key plug.
• a third embodiment shown in Figs. 9a, 9b, 9c, 9d, 9e, 9f, 9g, 9h and Fig. 10, the number of central locking pins is again seven, like in most of the previous embodiments, but the side locking mechanism is different, with only two side locking tumblers on one side of the key plug 500 only, these two side locking tumblers 551a, 551b cooperating with a relatively short side bar 580 (Fig. 9d).
• Such a side locking mechanism with a side bar is known perse, but not in the context of cylinder lock unit having a key plug with a back region being reserved for a possible extra lock component, e.g.
• the side bar 580 is normally held in a longitudinal recess or groove 243 (see Fig. 9a) by a spring 581 (see Fig. 9d), located between the two side locking tumblers to save longitudinal space, in a position where it projects sideways outside the contour of the key piug 500. In this position, the side bar will register with the corresponding groove 243 in the lower part 240 of the housing 200 and thereby effectively lock the key plug against rotation.
• the side bar 580 can be moved sideways, against the action of the spring 581, into a retracted position where it is no longer seated in the groove 243.
• the side bar 580 will be retracted and permit rotation of the key plug 500.
• a projecting lug 580a of the sidebar will find its way into a coded recess 555 in the cylindrical surface of the side locking tumbler 551b. This interaction will be seen clearly in the enlarged view in Fig.
• the side locking mechanism will provide a high degree of security, since it is difficult to manipulate the side locking tumblers 551a, 551b so as to release the lock.
• the back region of the key plug 500 may have a greater length L3, as shown in Fig. 9h, leaving only a relatively short front region FR3.
• each side locking tumbler can interact in different ways with the side bar, either by way of rotating along its axis or being non-rotatable and having a longitudinally displaced finger.
• the side locking tumbler 651b can rotate between two rotary end positions, as indicated by the arrow R.
• a material portion 655, between two adjacent recesses 656,657 in the cylindrical surface of the side locking tumbler can fit into a corresponding slot 680a in the side bar 680.
• the code combinations for each locking tumbler 651b will be 6 or higher.
• the code pattern at the side of the key must be configured to accommodate for two or three different pivotal positions of the transverse finger 654.
• the transverse finger 754 of the side locking tumbler 751b is longitudinally displaced (along the longitudinal axis of the keyway of the key plug) into one of three coded positions. Accordingly, with several possible levels of the recesses 755 at the cylindrical surface of the tumbler, there will also be a large number of code combinations for each side locking tumbler, e.g. 9 or higher.
• a fourth embodiment shown in Figs. 13c, there are two relatively short side locking mechanisms, one on each side of the keyway and each having a side bar 880, adjacent to the front end flange of the key plug 800.
• This is a favorable embodiment with a very high number of code combinations and yet a very compact structure confined within a rather smail part (less than 20%) of the total length of the key plug.
• the back region has a relatively long length L2, being massive except for the rear part of the central row of holes or cavities, and the front region FR2 is relatively short, but if necessary, the front region of the key plug may be just as short as in the embodiment shown in Fig. 9h (FR3).
• a fifth embodiment is shown in Figs. 13a and 13b where the key plug 800', in its solid front end region FR1, is provided, on each lateral side of the keyway, with a row of four side locking tumblers 851a', 851b', 851c', 851d' cooperating with an associated side bar 880'.
• the side locking mechanisms are arranged on both lateral sides of the keyway, each with four side locking tumblers in a row, the result will be a very large number of code combinations.
• Figs. 13b shows also the housing for the fifth embodiment. It is similar to the one shown in Fig. 2a, although it is adapted to the arrangement with two side bars 880'.
• each side bar 880' is seated, in its locking position, in a respective groove 243" in the lower part of the housing.
• the side bars shown in Figs. 9a to 9h, 10, 11, 12d, 13a, 13b, 13c are very favorable in that the springs (e.g. 581 in Fig. 9d), which push the side bar radially outwardly, are each located between a pair of side locking tumblers, so that the end of the side bar can be positioned very close to the front end of the key plug, thereby saving space.
• the springs e.g. 581 in Fig. 9d
• one of the springs should be positioned between the two neighboring side locking tumblers being located closest to the front end flange of the key plug and cooperate with the side bar.
• the hole (e.g. 371c) for the side locking tumbler (e.g. 351c) being located closest to the front end of the key plug is located closer to the front end flange than all the central holes (e.g. 331a - 331g), whereby the space for the side locking mechanism is utilized efficiently, and there is consequently room for at least two and possibly three or four side locking tumblers in a row in the front region FR1, FR2, FR3 which is at the most half of the total length of the key plug and possibly much shorter,
• the associated key 40 having a wave-like side code pattern 41 (see Fig. 2b) with code portions interacting with the side locking tumblers, will have the entire side code pattern 41 located substantially within the half of the key blade being located closest to the grip portion of the key. Furthermore, the side code portion of this pattern 41 located closest to the grip portion will be located closer to the grip portion than all the V-shaped bittings 42 on the edge of the key, the latter bittings interacting with the central row of locking pins of the cylinder lock. In this way, these keys 40 will be distinguished from all prior art keys.
• the key may alternatively have a wave-like side code pattern 41 on only one side of the key blade.
• the other side may be just flat or provided with some other code pattern or configuration.
• the side code pattern 141' on one side of the key blade is formed by two parallel upper and lower wall surfaces of a profile groove having a first part with two side code portions confined to the longitudinal half of the key blade, located closest to the grip portion of the key, and a second part forming a straight profile groove without any side code portions.
• the other side of the key shown in fig. 14b, also has a first part with side code portions confined to the longitudinal half of the key blade located closest to the grip portion, and a second part forming a straight profile groove without any side code portions.
• the profile groove is undercut and provided with a ridge portion where the side code portions are located.
• the upper wall surface of the profile groove is straight ail the way, so the side code tumblers of the lock unit interacting with the lower wave-like guiding surface ofthe profile groove must be biased downwardly, e.g. by springs, in order to follow the wave-like guiding surface.
• the side code portions may be formed by concavities in the wave-like guiding surface of the undercut profile groove.
• V-shaped bittings of the upper edge code pattern may be skew cut at different angles.
• the wave-like side code pattern is selected from a group of possible code positions, the possible code position including, at different vertical levels:

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• 2018
  • 2018-12-07 WO PCT/EP2018/084021 patent/WO2020114611A1/en unknown
  • 2018-12-07 CN CN201880100049.0A patent/CN113227519B/zh active Active
  • 2018-12-07 SG SG11202104914VA patent/SG11202104914VA/en unknown
  • 2018-12-07 KR KR1020217021322A patent/KR20210127139A/ko not_active Application Discontinuation
  • 2018-12-07 AU AU2018451779A patent/AU2018451779B2/en active Active
  • 2018-12-07 CA CA3119353A patent/CA3119353C/en active Active
  • 2018-12-07 MX MX2021006324A patent/MX2021006324A/es unknown
  • 2018-12-07 EP EP18819058.1A patent/EP3891352A1/de active Pending
• 2019
  • 2019-12-03 TW TW108144100A patent/TWI768269B/zh active
• 2021
  • 2021-06-07 SA SA521422203A patent/SA521422203B1/ar unknown
  • 2021-06-30 ZA ZA2021/04552A patent/ZA202104552B/en unknown
  • 2021-07-07 CO CONC2021/0008974A patent/CO2021008974A2/es unknown

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