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
  • E05B27/0003—Details
  • E05B27/0017—Tumblers or pins
  • E05B27/0021—Tumblers or pins having movable parts
• • 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
  • E05B27/0057—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with increased picking resistance
  • E05B27/0067—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with increased picking resistance whereby a small rotation without the correct key blocks further movement of a tumbler

Definitions

• the present invention relates to an anti-intrusion cylinder for locks, in particular in order to prevent, using the lock alone, the key from being cloned by making a perfect impression of the internal components for coding the lock.
• the key by way of its contoured (encoded) profile, acts on the upper surface of the pins, lowering them and bringing the discontinuity surface that separates the bottom of the pin from the apex of the counterpin into perfect alignment with the discontinuity surface present between rotor and stator, which can be substantially mutually disengaged (with the key inserted).
• the rotor (with the key inserted, therefore with the pins lowered according to the coding) can be rotated by turning the head of the key which protrudes from the cylinder: in this manner the opening of the lock is permitted.
• a non-encoded key is used, of the same type as that associated with a determined cylinder.
• Such key has previously been shaped by making a succession of grooves of depth equal to or deeper than the maximum depth present in the original key and filling such grooves with plastic elements (wax and plasticine) with a predefined degree of elasticity and ductility.
• the individual pins Following a certain number of successive alternate rotations, clockwise and anticlockwise, of the key, the individual pins, under the thrust of the respective elastic elements, gouge the plastic filling element of the respective grooves, advancing until they bring the discontinuity surface that separates the bottom of the pin from the apex of the counterpin into perfect alignment with the discontinuity surface present between rotor and stator (the position in which the rotor can be rotated by turning the head of the key which protrudes from the cylinder: in this manner the opening of the lock is permitted).
• the aim of the present invention is to solve the above mentioned drawbacks, by providing an anti-intrusion cylinder for locks which is highly secure against methods of cloning the key from the lock alone.
• an object of the invention is to provide an anti- intrusion cylinder for locks which is low cost, easily and practically implemented and safely applied.
• an anti-intrusion cylinder for locks of the type comprising a stator which is provided with a substantially cylindrical longitudinal cavity for accommodating a rotor with a longitudinal seat for the insertion of a key, said rotor and said stator comprising a plurality of channels, which are substantially aligned and facing when the cylinder is in the locked configuration, said channels accommodating respective pins, counterpins and optional elastic means which are adapted to prevent the rotation of the rotor in the stator in the absence of the key from said longitudinal seat, characterized in that at least one of said pins comprises a shank, said shank being provided with a mushroom-shaped terminal with a diameter smaller than the diameter of said shank, said terminal being faced toward and proximate to the corresponding counterpin, at least one contoured annular body with a substantially similar diameter to the diameter of said channel being fitted, with mechanical play, over said mushroom-shaped terminal.
• Figure 1 is a cross-sectional front elevation view of a conventional cylinder in the configuration of rest with the key inserted, the key being of the non-encoded type provided with plastic filling elements of the respective encoding grooves;
• Figures from 2 to 6 show, with reference to the conventional cylinder in Figure 1 , the sequence of steps to fraudulently open the lock;
• Figure 7 is a cross-sectional front elevation view of the cylinder according to the invention in the configuration of rest with the key inserted, the key being of the non-encoded type provided with plastic filling elements of the respective encoding grooves;
• Figure 11 is a cross-sectional front elevation view of the cylinder in Figure 7 in a locked configuration with the key partially rotated clockwise;
• Figure 12 is a cross-sectional front elevation view of the cylinder in Figure 7 in a different locked configuration with the key partially rotated anticlockwise;
• Figure 13 is an enlargement of Figure 7;
• Figure 14 is a cross-sectional front elevation view of the cylinder according to the invention without the original key in configuration of rest;
• Figure 15 is a cross-sectional front elevation view of the cylinder according to the invention with the original key inserted in the configuration of rest;
• Figure 16 is a cross-sectional front elevation view of the cylinder in Figure 15 in a first step of opening;
• Figure 17 is a cross-sectional end view of the cylinder according to the invention without key in the configuration of rest.
• the reference numeral 1 generally indicates an anti-intrusion cylinder for locks.
• the cylinder 1 comprises a stator 2 which is provided with a substantially cylindrical longitudinal cavity 3 for accommodating a rotor 4.
• the rotor 4 in turn is affected by a longitudinal seat 5 which is intended to receive a key 6: the insertion of the respective key 6 into the seat 5 determines the ability to rotate the rotor 4 with respect to the stator 2, thus opening the lock with which the cylinder 1 is associated.
• the rotor 4 and the stator 2 comprise a plurality of channels 7, which are substantially aligned and facing when the cylinder 1 is in the locked configuration.
• the channels 7 accommodate respective pins 8, counterpins 9 and optional elastic means 7a which are adapted to prevent the rotation of the rotor 4 in the stator 2 in the absence of the key 6 in the longitudinal seat 5.
• At least one of the pins 8 can positively comprise a shank 10, which is accommodated slideably in the stator portion 2 of a respective channel 7.
• the shank 10 is provided, according to the invention, with a mushroom-shaped terminal 1 1 with a diameter smaller than the diameter of the shank 10.
• the terminal 11 is faced toward and proximate to the corresponding counterpin 9, in particular the end face 12 of the counterpin 9.
• At least one contoured annular body 13, which has a substantially similar diameter to the diameter of the channel 7, is fitted, with mechanical play, over the mushroom-shaped terminal 1 1.
• the mushroom- shaped terminal 11 can positively comprise a stem 14, which has a first diameter of a value comprised between 1/6 and 3/4 of the diameter of the channel 7, surmounted by a plug 15, which has a second diameter of a value comprised between 1/5 and 5/6 of the diameter of the channel 7.
• the mushroom-shaped terminal 11 can be shaped like the head of a screw engaged axially on a respective pin 8, on an end face thereof.
• the contoured annular body 13 comprises an inner through opening 16 which has a diameter larger than the first diameter of the stem 14 and than the second diameter of the plug 15.
• the maximum diameter of the plug 15 can also advantageously be smaller than the diameter of the through opening 16 of the contoured annular body 13, especially if the pin 8 is made in one piece that comprises its terminal 11. In this manner it will be possible to engage the contoured annular body 13 on the pin 8 (in particular on its terminal 11 ) easily.
• the contoured annular body 13 can move with respect to the mushroom-shaped terminal 11 (while still remaining locked between the plug 15 and the lower end of the pin 8): in particular it can perform translational movements, arranging itself according to various possible misalignments with respect to the coaxial and aligned condition, and rotational movements, inclining itself with respect to the axis of the stem 14.
• contoured annular body 13 (fitted, with a predefined mechanical play, over the stem 14 of the mushroom- shaped terminal 11) is locked between the plug 15, below, and the end face of the shank 10, above.
• the inner through opening 16 of the contoured annular body 13 can conveniently comprise a first through hole 17 with a diameter that is complementary to the diameter of the plug 15 (in order to prevent the accidental disengagement of the annular body 13 from the mushroom- shaped terminal 11) and an external receptacle 18 with a diameter larger than the diameter of the plug 15; such receptacle 18 is adapted to temporarily accommodate the plug 15.
• the first through hole 17 has a diameter that is complementary to the diameter of the plug 15 means that it will have a measurement proximate to that of the diameter of the plug; substantially it can be slightly smaller, the same, or slightly larger.
• contoured annular body 13 can profitably have an outer shape structure that is preferably chosen from among cylindrical, toroidal, cask-shaped, frustum-shaped, prismatic, truncated pyramid shaped, teardrop portion shaped and a combination thereof.
• the annular body 13 will perform a different locking action in the event of attempts at tampering.
• a shape structure that has a curved or roundish outer shape will facilitate the annular body 13 in taking up inclined configurations (inclined with respect to the mushroom-shaped terminal 11) in that the absence of corner edges will enable easier rotation movements.
• a cylindrical shape structure or one that is frustum- shaped, prismatic, truncated pyramid shaped and the like, will be more subject to translational misalignment movements of the axis of symmetry of the body 13 with respect to the axis of symmetry of the mushroom-shaped terminal 11.
• the pin 8 can also have an outer shape structure preferably chosen from among cylindrical, toroidal, cask-shaped, frustum-shaped, prismatic, truncated pyramid shaped, teardrop portion shaped and a combination thereof.
• the annular body 13 will perform a different locking action in the event of attempts at tampering.
• a shape structure that has a curved or roundish outer shape will facilitate the annular body 13 in taking up inclined configurations (inclined with respect to the mushroom-shaped terminal 11) in that the absence of corner edges will enable easier rotation movements.
• a cylindrical shape structure or one that is frustum- shaped, prismatic, truncated pyramid shaped and the like, will be more subject to translational misalignment movements of the axis of symmetry of the body 13 with respect to the axis of symmetry of the mushroom- shaped terminal 11.
• the contoured annular bodies 13 can be at least two in number, mutually arranged in a column and fitted, with mechanical play, over the mushroom-shaped terminal 11.
• contoured annular bodies 13 mutually arranged in a column can be mutually identical or different.
• At least one first contoured annular body 13 could also comprise a recess for the partial accommodation of at least one portion of at least one second contoured annular body 13, so that they can also assume a configuration of mutual mating (and optional partial accommodation of the one in the other).
• the presence of such recess in the first contoured body 13 and of the corresponding portion in the second contoured body 13 is in any case not necessary for the correct operation of the invention; the contoured bodies 13 could in fact have their mutual abutment faces flat or contoured completely independently of each other.
• the cylinder 1 according to the invention can achieve extremely high standards of security if there is a plurality (in particular at least two) of pins 8 provided with the shank 10 with a mushroom-shaped terminal 11 (of diameter smaller than the diameter of the shank 10), and with at least one contoured annular body 13 which is fitted, with mechanical play, over the mushroom-shaped terminal 11 : such pins 8 according to the invention can be effectively distributed in different channels 7.
• the ill-intentioned individual will exert a mechanical moment in order to impose a rotation of the rotor 4 clockwise and, subsequently, anticlockwise, by way of such key 6a, in order to cause the oscillation of the pins 8 (as shown in the accompanying Figures 7, 8, 9).
• the annular body 13 will always abut with a surface thereof on the rotor 4, making a further lifting of the pin 8 inside the respective channel 7 impossible, and making it effectively impossible to make a perfect impression of the internal encoding components of the lock and therefore to make a perfect copy of the original key 6.
• the present invention solves the above mentioned problems, by providing an anti-intrusion cylinder 1 for locks which is highly secure against methods of cloning the key from the lock alone.
• the present invention makes it possible to provide an anti- intrusion cylinder 1 for locks relatively simply and at substantially low cost: such characteristics ensure a secure practical application of the present invention.
• the materials employed, as well as the dimensions, may be any according to requirements and to the state of the art.

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• Lock And Its Accessories (AREA)

Applications Claiming Priority (1)

Publications (2)

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Family Applications (1)

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• 2016
  • 2016-07-11 EP EP16770804.9A patent/EP3482023B1/de active Active
  • 2016-07-11 WO PCT/IT2016/000173 patent/WO2018011828A1/en not_active Ceased
  • 2016-07-11 ES ES16770804T patent/ES2811920T3/es active Active
  • 2016-07-11 PT PT167708049T patent/PT3482023T/pt unknown

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