EP4063594A1 - Umkehrbarer flachschlüssel und zylinderschloss mit umkehrbarem flachschlüssel - Google Patents

Umkehrbarer flachschlüssel und zylinderschloss mit umkehrbarem flachschlüssel Download PDF

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Publication number
EP4063594A1
EP4063594A1 EP22157955.0A EP22157955A EP4063594A1 EP 4063594 A1 EP4063594 A1 EP 4063594A1 EP 22157955 A EP22157955 A EP 22157955A EP 4063594 A1 EP4063594 A1 EP 4063594A1
Authority
EP
European Patent Office
Prior art keywords
wall
rotor
key
pin
enable
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.)
Pending
Application number
EP22157955.0A
Other languages
English (en)
French (fr)
Inventor
Enzo Giovanni Monti
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.)
Mg Serrature SpA
Original Assignee
Mg Serrature SpA
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 Mg Serrature SpA filed Critical Mg Serrature SpA
Publication of EP4063594A1 publication Critical patent/EP4063594A1/de
Pending 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
    • 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
    • E05B19/00—Keys; Accessories therefor
    • E05B19/0017—Key profiles
    • E05B19/0023—Key profiles characterized by variation of the contact surface between the key and the tumbler pins or plates
    • 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
    • E05B19/0035—Key profiles characterized by longitudinal bit variations
    • 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
    • E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
    • E05B27/0003—Details
    • E05B27/0017—Tumblers or pins
    • 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
    • E05B27/0003—Details
    • E05B27/0017—Tumblers or pins
    • E05B27/0021—Tumblers or pins having movable parts

Definitions

  • the present invention relates to a reversible flat key and to a cylinder lock with a reversible flat key.
  • At present locks comprise a stator provided with a cylindrical hole in which a rotor is rotatably inserted, which rotor has a slit for insertion of the key.
  • the stator and the rotor have a plurality of transverse holes where, respectively, counter pins and pins which collaborate with the key to open or close the lock are housed.
  • the key is provided with a mechanical encryption, defined by projections or recesses of the profile thereof.
  • the key has mechanical encryption defined by a plurality of craters made on its flat part, so that the pins when inserting into these craters bring the lock into the opening or closing configuration.
  • the devices of the traditional type have numerous drawbacks, mainly due to the fact that the key blanks (i.e. the key without the encryption) can be made in a substantially simple way.
  • a passive type lock has a stator and rotor having the same structure as those used in active type locks, with the difference in that the transverse holes of the stator do not contain counter pins, but they are left empty.
  • the technical task which is proposed for the present invention is, therefore, to realise a reversible flat key and a cylinder lock with a reversible flat key which allow eliminating the technical drawbacks of the prior art.
  • an object of the invention is to realise a reversible flat key and a cylinder lock with a reversible flat key, in which the reproduction of the key is very difficult, so as to limit the risk of illegal duplication.
  • Another object of the invention is to realise a reversible flat key and a cylinder lock with a reversible flat key, wherein the lock and the key have a very high number of possible combinations, without it being necessary to increase the number of pins and, hence, the complexity of the lock and the key.
  • a reversible flat key for a cylinder lock comprising a cylindrical stator that has a plurality of counter pins that are movable in a radial direction of the stator, a cylindrical rotor that has a plurality of pins that are movable in a radial direction of the rotor, said rotor having an axial slit for inserting said key, each pin being configured and arranged to interact with a corresponding counter pin to enable the rotation of the rotor, and where said key comprises a longitudinal lance having a tapered free end and two opposite primary longitudinal faces, characterized in that each primary longitudinal face has in succession in the longitudinal direction of the lance a first flat longitudinal wall extending as far as the end of the lance that is proximate to said grip and a second flat longitudinal wall that is distal from said grip, a connecting wall being further provided between said first wall and said second wall, said second wall being parallel and
  • the present invention also relates to the reversible flat key in combination with a cylinder lock.
  • said encryption elements comprise a plurality of craters.
  • said encryption elements also comprise a movable pin orthogonally to said first flat longitudinal wall.
  • said special pin is the innermost pin in an axial direction of the rotor.
  • said connecting wall is oblique.
  • a reversible flat key 1 and a cylinder lock 2 for the reversible flat key 1 are shown.
  • the lock 2 comprises a cylindrical stator 3 and a cylindrical rotor 4 coaxially housed in the cylindrical stator 3.
  • the cylindrical stator 3 has an inner cylindrical wall which mates with an outer cylindrical wall of the cylindrical rotor 4 at a cylindrical interface surface 5.
  • the cylindrical rotor 4 has a plurality of pins 6 movable along radial channels 6a of the cylindrical rotor 4 arranged in succession along the axis of the cylindrical rotor 4.
  • the radial channels 6a lie in a plane that contains the axis of the cylindrical rotor 4.
  • the cylindrical stator 3 has a plurality of counter pins 7 that are movable along radial channels 7a of the cylindrical stator 3 arranged in succession along the axis of the cylindrical stator 3.
  • the radial channels 7a lie in a plane that contains the axis of the cylindrical stator 3.
  • the counter pins 7 are movable along the radial channels 7a in contrast and by the action of springs 9.
  • the cylindrical rotor 4 has an axial slit 8 for inserting the key 1.
  • the axial slit 8 communicates with the radial channels 6a of the cylindrical rotor 4.
  • the pins 6 can be aligned with the counter pins 7 in an opening configuration of the lock.
  • the key 1 comprises a grip 10 and a longitudinal lance 11 having an end 12 that is proximate to the grip 10 and a tapered end 13 that is distal from the grip 10.
  • the lance 11 has a pair of opposite primary longitudinal faces 14, 14 and a pair of opposite secondary longitudinal faces 15, 15.
  • each primary longitudinal face 14 has a first flat longitudinal wall 16 which extends between the proximal end 12 of the lance 11 and a connecting wall 18 in a longitudinally intermediate position of the lance 11, and a second flat longitudinal wall 17 which extends between the connecting wall 18 and the tapered distal end 13 of the lance 11.
  • the second wall 17 is parallel and lowered with respect to the first wall 16.
  • the connecting wall 18 is oblique.
  • the first wall 16 has a series of encryption elements 19 that follow in the longitudinal direction of the lance 11.
  • the encryption elements 19 are configured and arranged to interact with corresponding pins 6 of the rotor 4 to enable the rotation of the rotor 4.
  • the second wall 17 is configured and arranged to cooperate with a corresponding special pin 20 of the rotor 4 to enable the rotation of the rotor 4 or to enable the complete insertion of the key 1 into the slit 8.
  • the encryption elements 19 comprise a plurality of craters of various depths.
  • the special pin 20 is the innermost pin in the axial direction of the rotor 4.
  • the special pin 20 has a flat end wall 21 configured and arranged to interact frontally with the second wall to enable the rotation of the rotor 4.
  • the special pin 20 is further configured and arranged to interact with a special counter pin 26 of the stator 3.
  • the special counter pin 26 in particular is movable along a radial channel 7a' in contrast and by the action of a spring 9'.
  • the special pin 20 is a dual-action pin having a bush 22 and a stem 23 slidable in the bush 22.
  • the second wall 17 has a further encryption element 24.
  • the bush 22 is configured and arranged to cooperate with the second wall 17 to enable the complete insertion of the key 1 into the slit 8.
  • the stem 23 is configured and arranged to interact with the further encryption element 24 to enable the rotation of the rotor 4.
  • the stem 23 has a tapered end 25 and the further encryption element 24 comprises a further crater configured and arranged to interact with the tapered end 25 of the stem 23.
  • the stem 23 is further configured and arranged to interact with a special counter pin 26 of the stator 3 and the bush 22 is configured and arranged to interact with the inner cylindrical wall of the stator 3.
  • the special counter pin 26 in particular is movable along a radial channel 7a' in contrast and by the action of a spring 9'.
  • each pin 6 is aligned with the corresponding counter pin 7 and the springs 9 keep the counter pins 7 in contact with the corresponding pins 6.
  • Each pin 6 of the rotor 4 sequentially performs a lifting movement in contrast to the spring 9 while sliding along the tapered tip 13 of the lance 11, then it remains at a fixed height while sliding along the second wall 17, then it performs a further lifting movement in contrast to the spring 9 while sliding along the oblique connecting wall 18, then it remains at a fixed height while sliding along the first wall 16, then it performs a final downward movement into the corresponding crater by effect of the spring 9.
  • each pin 6 housed in the corresponding crater is such as to bring the contact surface between the pin 6 and the corresponding counter pin 7 into alignment with the cylindrical interface surface 5.
  • the special pin 20, in the final step of inserting the key 1 into the slit 8, is first lifted by the tapered end 13 of the lance 11, then it remains stationary at the same height while sliding along the second wall 17.
  • the height difference of the second wall 17 with respect to the first wall 16 is calibrated in such a way that when the flat end wall 21 of the special pin 20 is resting flat against the second wall 17, the contact surface between the special pin 20 and the corresponding special counter pin 26 is aligned with the cylindrical interface surface 5.
  • each pin 6 is aligned with the corresponding counter pin 7 and the springs 9 keep the counter pins 7 in contact with the corresponding pins 6.
  • Each pin 6 of the rotor 4 sequentially performs a lifting movement in contrast to the spring 9 while sliding along the tapered tip 13 of the lance 11, then it remains at a fixed height while sliding along the second wall 17, then it enters and exits the special crater provided on the second wall 17, then it performs a further lifting movement in contrast to the spring 9 while sliding along the oblique connecting wall 18, then it remains at a fixed height while sliding along the first wall 16, then it performs a final downward movement into the corresponding crater by effect of the spring 9.
  • each pin 6 housed in the corresponding crater is such as to bring the contact surface between the pin 6 and the corresponding counter pin 7 into alignment with the cylindrical interface surface 5.
  • the special pin 20, in the conclusive step of inserting the key 1 into the slit 8, is first lifted by the tapered end 13 of the lance 11 until the bush 22 and the stem 23 rest against the second wall 17.
  • the lifting of the bush 22 is in fact minimal, and at best could even be zero, in any case by an amount insufficient to bring the bush 22 into mechanical interference with the inner cylindrical wall of the stator 3.
  • the tapered end 25 of the stem 23 fits into the further crater defining the further encryption element 24, and the contact surface between the stem 23 and the special counter pin 26 aligns with the cylindrical interface surface 5.
  • the second lowered wall 17 can be made with a linear milling processing of the lance 11.
  • the rotor 4 consequently has at least one safety pin 31 which collaborates with the pin 30 of the key 1 so that, when the pin 30 is in a protruding position, at least the safety pin 31 is in the opening configuration to allow rotation of the rotor 4 with respect to the stator 3.
  • the rotor 4 comprises an actuation means 32 for actuating the pin 30 between the retracted position and the protruding position.
  • the actuation means 32 comprises an element of the rotor 4 which protrudes inside the slit 8; correspondingly, the key 1 has a groove 33 connected to a seat 34 of the pin 30, for the actuation of the pin 30 when the protruding element 32 is inserted inside the groove 33.
  • the seat 34 is connected to the groove 33 at a portion of its bottom; another portion 35 of the bottom of the seat 34, on the other hand, is blind.
  • the blind portion 35 of the seat 34 is absent.
  • the seat 34 also has a radial portion 36 in relief, which partially closes its front opening.
  • This annular portion is made, for example, by deforming the front edge of the seat 34 or, in another embodiment, by connecting an annular element to the end of the seat 34.
  • the pin 30 has an enlarged head inserted in an enlarged portion of the seat 34 and preferably the enlarged head has a substantially truncoconical shape.
  • the pin 30 is misaligned with respect to the traditional pins 6 to allow the insertion of the key 1 inside the slit 8.
  • the safety pin 31 is aligned with the traditional pins 6, so as to be able to use the traditional locks and, since the pin 30 is misaligned with respect to the traditional pins 6, the safety pin 31 has a flattened terminal portion to collaborate with the pin 30.
  • the terminal portion of the safety pin 31 is cylindrical with an end adapted to collaborate, coming into contact at its own peripheral portion, with the pin 30.
  • the pin 30 is made to exit from the slit 8 of the key 1, by pressing it against the safety pin 31, so as to bring the safety pin 31 into the opening position to allow the rotation of a rotor with respect to a stator of the lock.
  • the pin 30 When the key 1 is inserted, the pin 30 is in the retracted position and does not interfere with the traditional pins 6 since the pin 30 is misaligned with respect to the traditional pins 6 which have conical ends.
  • the pin 30 When the pin 30 is brought at the safety pin 31, the pin 30, which is in the extracted position, makes the safety pin 30 slide along the truncoconical side wall, making it slide as indicated by the arrow F, making the end of the safety pin 31 align with the surface of the rotor 4 and the end of the counter pin associated therewith with the surface of the stator 3 and bringing the lock into the opening position.
  • the safety pin 30 and the counter pin associated therewith translate in the opposite direction to that indicated by the arrow F and the aforesaid counter pin is inserted between the rotor and the stator, preventing reciprocal rotation.
  • the pin 30 can also be arranged at the back of the key; in this case the safety pin is housed in the vertical seats.
  • the cylinder lock and the reversible flat key according to the invention are particularly advantageous, since the keys are extremely difficult to copy and, at the same time, the locks have a very high number of combinations, even without excessively increasing the number of pins.
  • the cylinder lock with reversible flat key as conceived herein is susceptible to many modifications and variations, all falling within the scope of the inventive concept; furthermore, all the details are replaceable by technically equivalent elements.
  • the materials used, as well as the dimensions, can be any according to the needs and the state of the art.
EP22157955.0A 2021-03-24 2022-02-22 Umkehrbarer flachschlüssel und zylinderschloss mit umkehrbarem flachschlüssel Pending EP4063594A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT202100007208 2021-03-24

Publications (1)

Publication Number Publication Date
EP4063594A1 true EP4063594A1 (de) 2022-09-28

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ID=76375496

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22157955.0A Pending EP4063594A1 (de) 2021-03-24 2022-02-22 Umkehrbarer flachschlüssel und zylinderschloss mit umkehrbarem flachschlüssel

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EP (1) EP4063594A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001077466A1 (de) * 2000-04-11 2001-10-18 Kaba Schliesssysteme Ag Sicherheits-wendeschlüssel und schliesssystem
WO2006092779A2 (en) * 2005-03-01 2006-09-08 Hamafteach Hamistovev Ltd. Improved locking apparatus
EP2314807A2 (de) * 2009-10-21 2011-04-27 ABUS Pfaffenhain GmbH Schliesssystem
EP2317040A1 (de) * 2005-05-25 2011-05-04 DOM Sicherheitstechnik GmbH & Co. KG Schlüssel für einen Schließzylinder
WO2018166662A1 (en) * 2017-03-15 2018-09-20 Iseo Serrature S.P.A. A key for a lock and a combination of a cylinder lock and a reverible flat key

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001077466A1 (de) * 2000-04-11 2001-10-18 Kaba Schliesssysteme Ag Sicherheits-wendeschlüssel und schliesssystem
WO2006092779A2 (en) * 2005-03-01 2006-09-08 Hamafteach Hamistovev Ltd. Improved locking apparatus
EP2317040A1 (de) * 2005-05-25 2011-05-04 DOM Sicherheitstechnik GmbH & Co. KG Schlüssel für einen Schließzylinder
EP2314807A2 (de) * 2009-10-21 2011-04-27 ABUS Pfaffenhain GmbH Schliesssystem
WO2018166662A1 (en) * 2017-03-15 2018-09-20 Iseo Serrature S.P.A. A key for a lock and a combination of a cylinder lock and a reverible flat key

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