EP0192544B1 - Keyless cylinder combination lock and tool for changing the combination - Google Patents

Keyless cylinder combination lock and tool for changing the combination Download PDF

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Publication number
EP0192544B1
EP0192544B1 EP86400244A EP86400244A EP0192544B1 EP 0192544 B1 EP0192544 B1 EP 0192544B1 EP 86400244 A EP86400244 A EP 86400244A EP 86400244 A EP86400244 A EP 86400244A EP 0192544 B1 EP0192544 B1 EP 0192544B1
Authority
EP
European Patent Office
Prior art keywords
rotor
fact
coding
lock according
central
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.)
Expired
Application number
EP86400244A
Other languages
German (de)
French (fr)
Other versions
EP0192544A1 (en
Inventor
Jacques Peyronnet
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.)
MINILOCK SA
Original Assignee
MINILOCK SA
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 MINILOCK SA filed Critical MINILOCK SA
Publication of EP0192544A1 publication Critical patent/EP0192544A1/en
Application granted granted Critical
Publication of EP0192544B1 publication Critical patent/EP0192544B1/en
Expired legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B37/00Permutation or combination locks; Puzzle locks
    • E05B37/08Permutation or combination locks; Puzzle locks with tumbler discs on a single axis, all the discs being adjustable by a rotary knob which is not shifted for adjusting the discs
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00Locks
    • Y10T70/70Operating mechanism
    • Y10T70/7153Combination
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00Locks
    • Y10T70/70Operating mechanism
    • Y10T70/7153Combination
    • Y10T70/7181Tumbler type
    • Y10T70/7198Single tumbler set
    • Y10T70/7237Rotary or swinging tumblers
    • Y10T70/7243Interset tumblers
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00Locks
    • Y10T70/70Operating mechanism
    • Y10T70/7153Combination
    • Y10T70/7181Tumbler type
    • Y10T70/7198Single tumbler set
    • Y10T70/7237Rotary or swinging tumblers
    • Y10T70/726Individually set
    • Y10T70/7271Associated movable operator
    • Y10T70/7288Spindle operator
    • Y10T70/7299Axially shiftable spindle
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00Locks
    • Y10T70/70Operating mechanism
    • Y10T70/7153Combination
    • Y10T70/7322Permutation

Definitions

  • the present invention relates to keyless combination locks and more specifically a so-called keyless combination cylinder lock.
  • the present invention more specifically aims to improve the lock described and shown in European patent application No. 8,340,0367.5 filed on February 22, 1983 in the name of the Company INITIAL SARL and published under N. 0 088 012.
  • the cylinder lock described in this earlier European patent application comprises a stator which envelops a rotor associated with a bolt and at least one blocking member disposed between the rotor and the stator, the blocking member being capable of being moved between a locking position in which it prohibits the rotation of the rotor relative to the stator and a neutral position in which it authorizes the rotation of this rotor, a plurality of coaxial coding elements each comprising on their periphery, a notch intended to receive the blocking member in neutral position, as well as drive members adapted to drive the rotation of each of the coding elements when one of the elements which is immediately adjacent to it is itself driven in rotation, and a rotary member of decoding of the elements, adapted to ensure the rotational drive of one of them, and to allow the alignment of the notches.
  • the lock further comprises a disengaging member adapted to disengage the outer rings and central discs of each coding element by relative axial displacement thereof when the outer rings are immobilized in rotation by a retaining member so to allow in the disengaged position a relative pivoting of the central rings and discs of each coding element by actuation of the rotary decoding member to effect a change in combination of the lock.
  • the combination of the lock determined by the relative position of the notches adapted for receiving the blocking member and the driving members, on each element can be modified, automatically, without removing the lock, by actuation of the rotary decoding member.
  • Document US-A-4 350 030 (BROMLEY RL) relates to a suitcase lock which comprises a central cylindrical spindle, a control barrel rotatably mounted on the spindle, a control sleeve engaged free of rotation on the spindle and linked to rotation with the barrel, two central discs mounted for rotation on the spindle, drive pins provided on the control sleeve and the central discs to induce rotation of each of these elements when one of the elements immediately adjacent to it is itself driven in rotation by actuation of the barrel, three outer rings immobilized in translation in the body of the lock and adapted to engage respectively with the control sleeve and one of the central disks, according to a multiplicity of angular positions predetermined, thanks to serrations, a disengaging member, which when moved in translation parallel to the axis of the spindle, in the direction of the barrel, ensures a disengagement of the outer rings relative to the control sleeve and the central discs to allow a change of combination by
  • the coding elements described and represented in document US-A 350 030 are not formed in combination with an outer ring and a central disc, the inner and outer peripheral surfaces of which are respectively adapted to allow assembly. of these elements.
  • these coding elements are formed by juxtaposition of the outer rings and of the control sleeve or of the discs.
  • the triangular tooth can come out of the grooves provided on the outer rings, by compressing the helical spring, without inducing rotation of said crowns.
  • the lock described in document US-A-4 350 030 is very sensitive to frost.
  • the leaf spring sticks against the outer crowns and therefore, during the barrel drive, the control teeth escape with complementary grooves and the combination of the lock is then irretrievably lost in the same way as in the case of a too rigid leaf spring.
  • the lock comprises a passage adapted to allow the introduction therein of a retaining member capable of engaging with the outer rings to immobilize them in front rotation disengage the outer rings and central discs.
  • the declutching member is formed by a pin capable of axial displacement in the lock, and the various central disks are provided with central bores and are engaged free to rotate but immobilized in relative axial displacement on spindle.
  • the immobilization in relative axial displacement of the central discs and of the spindle is preferably carried out by spacers engaged on the spindle between the discs and immobilized in rotation on the spindle.
  • these spacers are formed of stepped rings, the portion of smaller section of the spacers, engaged in the internal bore of the discs taking the place of a rotation bearing for the latter, while the portion of stronger section of the spacers prohibits the relative axial movement of the discs on the spindle.
  • the spindle, the above-mentioned spacers and the central discs then constitute a sub-assembly of which all the parts are integral in axial translation but of which only the central discs are free to rotate.
  • the rotor defines a generally cylindrical housing in which are engaged, free to rotate, but immobilized in axial displacement relative to the outer rings of the coding elements.
  • the passage adapted to allow the introduction of a retaining member engaged with the outer rings is produced in the rotor.
  • the immobilization in relative axial movement of the outer rings in the rotor is preferably carried out by spacers engaged between the adjacent rings and immobilized in rotation on the rotor.
  • the rotor, the outer rings of the coding elements and the spacers associated with these rings constitute a sub-assembly of which all the parts are integral in axial translation but of which only the outer rings of the coding elements are free to rotate.
  • the axial thicknesses of the spacers are greater than those of the central rings and discs of the elements of coding and at least slightly greater than the axial translational travel of the spindle forming the declutching member.
  • the spindle is provided with a transverse slot in which is engaged a pin engaged with the rotor to immobilize the spindle in rotation on the rotor while limiting its relative axial sliding.
  • the spindle is provided with two transverse bores in which is engaged alternately a removable pin engaged with the rotor to immobilize the spindle in rotation on the rotor and define two axial positions of the spindle on the rotor corresponding respectively to the engagement and disengagement of the crowns and central discs of the coding elements.
  • the spindle is of polygonal section and the corresponding bore formed in the rotor has the same section to immobilize the spindle in rotation, but this bore is semi-blind to limit the body of the pin towards the rear of the lock, and this bore ends in a threaded hole of smaller section opening out towards the rear of the rotor to allow the passage of a screw, removable if necessary, acting in pushing or pulling on the spindle to ensure its axial disengagement movement.
  • the rotary decoding member is advantageously axially displaceable to ensure the rotation of the rotor and the opening of the lock when the notches provided on the outer rings are aligned.
  • the rotary decoding member is formed by a cylinder comprising serrations capable of coming into engagement with the rotor to ensure the rotation of the latter after alignment of the notches.
  • the rotary decoding member is advantageously arranged on the front face of the stator and has structures capable of cooperating by drive relationship with a graduated dial facing an index carried by the stator.
  • a spring is disposed between the rotary decoding member and the spindle forming the declutching member to initially separate the rotary decoding member and the rotor in order to allow the drive of the coding elements without interfering with the rotor, while allowing, after compression of the spring, the drive of the rotor by the rotary decoding member.
  • the serrations of the rotary decoding member are advantageously bevelled as are the projections of the rotor on which they can engage so that the decoding member is pushed forward and loses its grip on the rotor if the elements of coding were not aligned (non composition of the combination) and therefore that the locking member did not release the rotor.
  • This arrangement is particularly advantageous in the case of a fraudulent attempt to actuate the rotor before composition of the combination.
  • the drive members adapted to drive the rotation of each of the coding elements are formed of coding pins, projecting on either side of the mean plane of each of the coding discs.
  • the rotary decoding member is provided with structures capable of coming into drive relation with the drive means of one of the central discs, whatever the axial position thereof. ci, in the disengaged or disengaged position to ensure in one case the change of combination, in the other the decoding by alignment of the notches.
  • the present invention also relates to a tool for changing the combination of the aforementioned cylinder lock which comprises a needle capable of penetrating the lock to engage the outer rings of the coding elements in order to immobilize the latter in rotation, a insert which carries the needle and is adapted to disengage the outer rings and central discs by axial stress.
  • the insert is provided with an external thread capable of engaging in a complementary tapped bore formed in the lock to control the amplitude of relative axial movement between the outer rings and the central discs, during of the clutch.
  • the lock according to the present invention essentially comprises a stator 10, a rotor 40, a rotary decoding member 70, a locking member 90 and a plurality of coding elements each comprising in combination an outer ring 100 and a central disc 120.
  • the stator 10 has the general shape of a hollow cylinder defining a cylindrical internal housing 11, of constant section, capable of receiving the rotor 40.
  • the cylindrical logoment 11 is provided at its free end before an annular rib 12.
  • the latter defines, by its internal peripheral surface a cylindrical opening 13, at the front of the stator 10 allowing access to the decoding member 70.
  • the rib 12 also defines an annular bearing surface 14 of radial orientation opposite the axis of the cylindrical housing 11, directed towards the rear of the stator 10.
  • the stator 10 is further provided, at its front end, with an outer annular rib 15 facilitating the installation of the lock on an appliance.
  • the stator 10 advantageously comprises on its front face 16 or on the rib 15 an engraved index, able to cooperate with a graduated dial 300 and serving as a reference point for the composition of the code.
  • the cylindrical logoment 11 is provided near its rear end with an annular groove 17 adapted to receive an inner circlip 160 (or any other functionally equivalent means, making it possible to immobilize the rotor 40 in the cylindrical logoment 11 of the stator in front of the circlip 160 above.
  • the cylindrical housing 11 also has a rectilinear groove 18, extending longitudinally, that is to say parallel to the axis of the cylindrical housing 11. This groove 18 opens at the rear face 19 of the stator 10.
  • the groove 18 is adapted to receive the locking member 90 formed in this case of a cylindrical rod.
  • the depth of the groove 18 and the cross section of the locking member 90 are adapted so that the locking member can be moved between a locking position in which the locking member interferes between the stator and the rotor. to prevent rotation of the rotor relative to the stator, and a neutral position (obtained when notches provided on the periphery of the crowns 100 are aligned) in which the locking member authorizes rotation of the rotor 40.
  • the locking member 90 has a diameter twice the thickness of the tubular wall of the rotor.
  • This projection 20 serves as a stop for a stroke limiter 170.
  • the groove 18 intended to receive the blocking member 90 is preferably formed in the lower part of the stator 10.
  • the blocking member 90 tends to rest by gravity on the bottom of the groove 18 and thus to move away from the outer rings 100 of the coding elements.
  • This arrangement provides a defense to "tatage" insofar as the blocking member 90 can only come into contact with the periphery of the outer rings 100 if an attempt is made to drive the rotor, that is to say at a time when the potential fraudster has no means of rotating the coding elements.
  • the rotor 40 comprises a tubular sleeve 41, open towards the front and closed at least partially at the rear by a transverse partition 42.
  • the rotor is extended towards the rear by an elongated structure or an extension 43 centered on the axis of the tubular sleeve 41, but not symmetrical in revolution with respect to this axis.
  • the structure 43 has for example a polygonal section in a plane perpendicular to the axis of the tubular sleeve 41.
  • the free front edge of the tubular sleeve 41 is provided with a plurality of pins 44, projecting axially. These pins 44 are intended to cooperate, by engagement, with a series of annular serrations 71 produced in the manner of a toothed pinion on the outer periphery of the decoding member 70.
  • the angular distribution of the pins 44 is adapted to the angular distribution of the serrations.
  • the serrations 71 and the pins 44 are bevelled.
  • the tubular sleeve 41 is further provided with two rectilinear slots 45, 46, passing through its thickness, and of longitudinal orientation, that is to say parallel to the axis of the tubular sleeve 41.
  • the slot 45 extends substantially over the entire length of the tubular sleeve 41.
  • the slots 45, 46 are diametrically opposite opposite the axis of the tubular sleeve 41.
  • the lower slot 46 is intended to receive the blocking member 90.
  • the width of the slot 46 is therefore at least equal to the diameter of the blocking member 90.
  • the lower slot 46 does not open at the front of the lock in order to limit the translation of the locking member 90.
  • the upper slot 45 is intended to receive a protrusion 181 of intermediate rings 180, arranged between the various coding rings 100, and the structure of which will be described in more detail below.
  • the purpose of engaging the protuberances 181 in the slot 45 is to immobilize the spacers 180 in rotation relative to the rotor 40.
  • the cylindrical internal housing 47 is defined by the tubular sleeve 41 and adapted to receive the outer rings 100 and the above-mentioned spacers 180. These rings 100 and spacers 180 are immobilized in the cylindrical housing 47 of the rotor 40 bearing against the transverse partition 42 of this rotor by an internal circlip 190 (or any other functionally equivalent means) engaged in an annular groove 48 formed on the internal periphery housing 47.
  • the rear extension 43 and the transverse partition 42 are pierced with a central bore 49, partially threaded at its rear end, as is schematically illustrated at 50.
  • the extension 43 is also pierced radially with a hole 51, preferably through.
  • the extension 43 has on its outer surface a groove 52 adapted to receive an external circlip 220 (or any other functionally equivalent means) making it possible to retain the bolt 200 on the extension 43.
  • the rotor 40 is finally provided in its transverse partition 42 with a longitudinal through bore 53, allowing the introduction of a needle 251, into the cylindrical chamber 47 of the rotor 40, by the rear of the lock, in order to immobilize in rotation the crowns 100.
  • the above-mentioned stroke limiter 170 is formed by a generally circular flat plate having two radial bearing surfaces 173, 174.
  • the stroke limiter 170 is provided with a central opening 175 complementary to the cross section of the extension 43 (polygonal according to the illustration) in order to prohibit any relative rotation between the stroke limiter 170 and the rotor 40.
  • the stroke limiter 170 is provided, in its thickness, with a through bore 176 aligned with the bore 53 of the rotor 40 and intended to allow the insertion of the needle 251 into the cylindrical housing 47 of the tubular sleeve 41 .
  • the rotary decoding member 70 is formed of a cylindrical block 72 provided on its outer periphery with an annular ring of serrations 71, preferably in number equal to the graduations 301 of the dial 300.
  • the front face 73 of the rotary decoding member 70 is provided with blind holes 74, 75, intended to receive pins 302, 303 formed on the dial 300.
  • one of the bores referenced 74 in the figures is centered on the front face 73 of the member 70, that is to say coaxial with the cylindrical block 72, while the second blind hole 75, parallel to the first , is offset.
  • the rear face 76 of the rotary decoding member 70 is also provided with blind holes 77, 78 intended to receive pins 121A, 122A secured to a coding disc 120A.
  • the bores 77 and 78 are diametrically opposite opposite the axis of the cylindrical body 72.
  • the apparatus comprises three coding rings 100. Only one of these rings has been shown in the figures in order to simplify the illustration.
  • Each of the rings 100 has on its outer periphery, and in its thickness, a notch 101 of cross section in "U".
  • the depth of the notch 101 is equal to half the diameter of the rotary blocking member 90.
  • each ring 100 has on its inner periphery protruding structures 102 capable of cooperating by engagement with the outer periphery 123 of the central coding disks 120.
  • the structures 102 are formed of notches of triancular or semi-circular cross section or equivalent in number equal to the graduations 301 of the dial 300.
  • the lock comprises two intermediate rings 180 intended to be arranged between the coding crowns 100.
  • each of the intermediate rings 180 has on its outer periphery a projection 181 adapted to penetrate into the slot 45 of the rotor 40 in order to 'immobilize the intermediate rings 180 in rotation relative to the rotor 40.
  • each intermediate ring 180 is provided with a notch 182 adapted to receive the blocking member 90.
  • the relative position of the projection 181 and the notch 182 corresponds to the relative position of the slots 45 and 46 on the rotor 40.
  • the projection 181 and the notch 182 are diametrically opposite.
  • the notch 182 completely crosses the intermediate ring 180 so that it is in the form of an open ring in "C".
  • the lock further comprises a pin 280 forming a disengaging member and adapted to support the coding discs 120 as well as spacers 140 associated therewith.
  • the spindle 280 is formed of two coaxial cylindrical portions 281, 282 having a different diameter.
  • the cylindrical section 281 of smaller diameter, is arranged on the front.
  • the rear cylindrical section 282 of larger diameter, is provided with a hole 283 transversely passing through the spindle 280.
  • the external diameter of the cylindrical section 282 is complementary to the bore 49 of the rotor 40 and the axial position of the light 283 on this section 282 is adapted so that the light 283 is placed opposite the orifice 51 of the rotor 40 to receive a pin 60 engaged in the orifice 51.
  • Longitudinal extension (in the direction of the axis of the pin 280) of the light 283 is greater than the diameter of the pin 60, while the transverse extension of this same light 283 corresponds substantially to the diameter of the pin 60 so that the insertion of the latter in the orifice 51 and in the slot 283 immobilizes the spindle 280 in rotation on the rotor 40 while limiting its relative axial sliding.
  • the function area between the two cylindrical sections 281 and 282 defines an annular bearing surface 284, directed towards the front, serving as a stop for the spacers 140.
  • the lock includes three dividers 140.
  • Each of the spacers 140 is formed of a stepped crown.
  • each insert 140 is formed of two coaxial cylindrical portions 141, 142, of different diameters, and having a common central cylindrical bore 143.
  • the internal diameter of the internal bore 143 adapts to the external diameter of the smallest section 281 of the spindle 280.
  • the external diameter of the smallest sections of the inserts 140 adapts to the internal diameter of bores 124 formed centrally in the coding disks 120, to act as a bearing for rotation thereof.
  • the external diameter of the largest sections 142 of the inserts 140 is moreover less than the diameter of rotation of drive pins 121, 122 and 125 provided in axial projection on the coding discs 120.
  • the lock comprises three coding discs 120.
  • indices A, B and C have been associated respectively with each of these three discs.
  • the three discs 120A, 120B and 120C have the common characteristics of having a central bore 124 complementary to the smallest section 141 of the spacers 140 and of having on their periphery structures 126 capable of cooperating by engagement, according to a multiplicity of predetermined angular positions with the structures 102 of the coding crowns 100.
  • the structures 126 provided on the outer periphery of the coding discs 120 are formed of teeth (for example three in number), regularly distributed angularly at 120 ° and adapted to penetrate into the notches 102 of the crowns coding 100.
  • the 120A, 1208 and 120C discs are distinguished by the number of pins it contains.
  • the different pins are cylindrical in shape and extend transversely to the coding discs 120.
  • these pins will be formed of a crown sector equal to a graduation of the dial and defining two bearing surfaces of radial orientation opposite the axis of the coding discs 120.
  • the frontmost coding disc 120A has on its front face two pins 121A, 122A adapted to penetrate into the holes 77 and 78 of the rotary decoding member 70, being capable of axial sliding in the latter.
  • the length of the pins 121A and 122A and the length of the blind holes 77, 78 is adapted so that these elements cooperate constantly during an axial displacement of the coding disc 120A, over a stroke slightly greater than the thickness of the crowns of coding 100.
  • the pins 121A and 122A as well as the blind holes 77 and 78 are adapted to define a cooperation between these elements, whatever the axial position of the coding disc 120A, in engagement with a crown of associated coding 100, for decoding by aligning the notches 101, or even in the disengaged position relative to the crown 100 to authorize the change of combination.
  • the frontmost disc 120A furthermore comprises on the rear face a pin 125 adapted to drive the middle disc 120B by contact on either side of a pin 121 B formed on the front face of the latter.
  • the median disc 120B has on its rear face a pin 125B capable of rotating the rear disc 120C by contact on either side of a pin 121C provided on the front face of the disc 120C.
  • the disc 120C has only one pin 121 C on its front face.
  • the pins 122A and 125A on the one hand are aligned and the pins 121 B and 125B on the other hand are aligned.
  • the graduated dial 300 intended to cooperate with the rotary decoding member 70 comprises two pins 302, 303 intended to penetrate respectively into the blind holes 74 and 75.
  • the position of the pins 302, 303 on the dial 300 is of course complementary to the position of the holes 74 and 75 on the rotary decoding member 70.
  • one of the pins 302 is centered and serves as a guide, by penetrating into the blind hole 4, while the other pin 303, eccentric, of shorter length, serves as a coach by penetrating into the orifice 75.
  • the dial 300 can be removable.
  • the central pin 302 can be formed by a screw engaged in the dial 300 and adapted to be engaged in the blind bore 74, then tapped, in order to allow fixing. dial 300 on the lock.
  • the penetration of the dial 300 into the lock is limited by an annular collar 304.
  • the spacers 140 are immobilized in rotation on the spindle 280 using any suitable conventional means, such as for example by crimping.
  • a helical spring 80 is inserted between the rotary decoding member 70 and the spindle 280 fitted with dividers 140 and coding discs 120.
  • the spring 80 bears on the one hand on the rear face 72 of the rotary decoding member 70 and on the other hand on the front face of the interlayer 140A, so as to push the rotary decoding member 70 towards the 'front of the lock and the assembly - spindle 280, dividers 140 and coding discs - towards the rear.
  • the bolt 200 is forced by an oblong plate comprising at one end, in its thickness, an opening 201 complementary to the cross section of the extension 43 and polygonal according to the illustration.
  • the bolt 200 further comprises a through bore 202 intended to come opposite the bore 176 of the limiter 170 and the bore 53 of the rotor 40 in order to authorize the insertion of the needle 251 in the lock, to immobilize in rotation the coding rings 100.
  • This combination change tool 250 comprises in combination a needle 251 and an insert 260 which have been shown separated in FIG. 2, to clearly illustrate the structure of each of these two elements.
  • the insert 260 is composed of a cylindrical grip handle 261 extended forward by a coaxial rod 262, threaded at its front end referenced 263 and provided behind the thread 263 d '' an annular collar 264.
  • the needle 251 comprises a rigid rectilinear strand 252 wound at its rear end, as illustrated at 253, on the rod 262 of the insert 260.
  • the winding 253 of the needle 251 on the rod 262 is adapted to allow relative rotation between the needle 251 and the insert 260.
  • the threaded front end 263 of the rod 262 is adapted to engage the threaded bore 50 of the rotor 40, in order to push forward the spindle 280 carrying the inserts 140 and the coding discs 120, in order to disengage the coding discs 120 and the coding rings 100, according to an arrangement which will be described in more detail below.
  • the thicknesses of the insert rings 180 and of the sections 142 of the insert sheets 140 are equal to each other, while the thicknesses of the crowns 100 and coding discs 120 are equal to each other.
  • the thicknesses of the inserts 180 and 142 are greater than those of the crowns 100 and discs 120 and slightly greater than the authorized axial translation travel of the spindle 280 in the rotor 40.
  • the assembly of the keyless combination cylinder lock according to the present invention is as follows.
  • the three coding discs 120 and the three spacers 140 are arranged on the smallest section 281 of the declutching spindle 280. More precisely, the disc 120C is successively threaded, an interlayer 140, the disc 120B, a second insert 140, the disc 120A and finally a third insert 140 on the section 281.
  • the spindle 280, the coding disks 120 and the inserts 140 then constitute, when the inserts 140 are immobilized, for example by crimping or screwing, an autonomous sub-assembly of which all the parts are integral in axial translation but of which only the disks of coding 120 are free to rotate.
  • three coding rings 100 and two intermediate rings 180 are engaged in the cylindrical housing 47 of the rotor 40 and immobilized axially thanks to the internal circlip 190.
  • the rotor 40, the three coding rings 100, the two intermediate rings 180 and the inner circlip 190 then constitute an autonomous sub-assembly of which all the parts are integral in axial translation but of which only the coding crowns 100 are free to rotate, if the needle 252 does not immobilize them. It will be recalled that the spacers 180 are immobilized in rotation on the rotor 40 by virtue of the protuberances 181 penetrating into the slot 45.
  • the spindle fitted with disks 120 and spacers 140 is introduced from the front into the rotor 40.
  • the section 282 enters the bore 49 and the coding disks 120 engage by the structures 126 in the internal periphery 102 of the coding rings 100.
  • the rotary decoding member is introduced from the rear into the stator 10, then the helical spring 80.
  • the blocking member 90 is engaged in the groove 18 of the stator 10.
  • the lock is then ready for use.
  • the rotor 40 in order to open the lock, the rotor 40 must rotate in the stator 10. It is initially prevented by the blocking member 90 engaged in the groove 18 and in the slot 46 and which creates therefore an interference between the rotor 40 and the stator 10.
  • the alignment of the notches 101 is effected by rotation of the rotary decoding member 70, by controlling the angle of rotation of the latter using the graduations 301 provided on the dial 300 and the index formed on the front face 16 of stator 10.
  • the general principle of this declutching process lies in the possibility of relative axial translation between the coding discs 120 and the coding rings 100 making it possible to modify the relative position of the notches 101 and of the drive pins 121, 125 for each of the elements.
  • coding formed in combination of a crown 100 and a disc 120.
  • the automatic change of combination is authorized by the division of each coding element into a crown 100 and into a disc 120 capable of relative pivoting and one carrying the notch 101 for passage of the organ of blocking 90, the other of the drive pins 121, 125.
  • the lock is then ready for use, with the new combination.
  • the structure of the combination change tool 250 described above keeps the needle 251 stationary in rotation while the insert 260 is rotated to allow engagement of the threaded rod 263 in the threaded bore 50 .
  • the spring 80 interposed between the rotary decoding member 70 and the declutching spindle 280 allows either the advance of the assembly - spindle 280, discs 120 and spacers 140 - normally biased towards the rear, to allow the change of combination, ie the insertion of the rotary decoding member 70, at the end of code composition to engage the rotary decoding member 70 and the rotor 40 (via the serrations 71 and the pins 44 ) in order to drive the rotor 40 and the bolt 200.
  • the structure which has been previously described allows disengaging of the disks 120 and crowns 100 by axial translation towards the front of a spindle 280 carrying the disks, but the structure shown in the figures will be easily adapted by l '' skilled in the art to allow an equivalent functional disengagement of the coding discs by translation in the rear.
  • the rotary decoding member 70 is urged away from the rotor 40, by the spring 80, while constantly being engaged with the coding disc 120A.
  • the rotary decoding member 70 must be moved axially after composition of the combination to engage the rotary decoding member 70 and the rotor 40 by compression of the spring 80.
  • the rotary decoding member 70 shown in the figures which cooperates on the one hand with the coding disks 120, on the other hand with the rotor 40 can be replaced by two separate elements cooperating respectively with the disks coding 120 and the rotor 40.
  • the element cooperating with the rotor 40 can only be rotated after composition of the combination, that is to say alignment of the notches 101 of the coding rings 100 and erasure of the locking member 90.
  • the pin 280 shown in the figures and provided with a light 283 can be replaced by a stepped pin 280 provided with two transverse through holes, intended to receive the pin 60.
  • the change of code such a lock is then made according to the steps consisting of composing the old code, inserting a needle into the hole 53 of the rotor, removing the pin 60, pushing in the pin 280 to disengage the disks 120, replacing the pin 60 in the second hole of the spindle to immobilize the discs axially, compose the new code, remove the pin 60 to authorize the retraction of the spindle 280, put the pin 60 back in the initial hole and remove the pin immobilizing the coding crowns 100.
  • the advantage of this alternative embodiment is to ensure the axial immobilization of the spindle 280 towards the rear, to avoid any untimely disengagement, and, similarly, to ensure the axial immobilization of the spindle 280 in position disengaged when composing the new code.
  • the spindle 280 in order to facilitate the axial positioning of the spindle 280 in the rotor 40, the spindle 280 extends beyond the use at the rear of the rotor 40 by a length equal to its forward stroke necessary to disengage the coding discs 120.
  • the spindle 280 can be of polygonal section, engaged free in translation but immobilized for rotation in a semi-blind bore complementary to the rotor.
  • the openings 175 and 201 formed in the stroke limiter 170 and the bolt 200 may be of different geometry from the illustration, for example of square section and if necessary the bores 176 and 202 may be removed, the needle then passing through one of the angles of openings 175 and 201.

Landscapes

  • Preventing Unauthorised Actuation Of Valves (AREA)
  • Vehicle Body Suspensions (AREA)
  • Lock And Its Accessories (AREA)
  • Braking Arrangements (AREA)
  • Mechanical Operated Clutches (AREA)
  • Sheet Holders (AREA)
  • Gripping On Spindles (AREA)

Description

La présente invention concerne les serrures à combinaison sans clé et plus précisément une serrure dite à cylindre à combinaison sans clé.The present invention relates to keyless combination locks and more specifically a so-called keyless combination cylinder lock.

La présente invention a plus précisément pour but de perfectionner la serrure décrite et représentée dans la demande de brevet européenne n° 8 340 0367.5 déposée le 22.02.1983 au nom de la Société INITIAL SARL et publiée sous le N. 0 088 012.The present invention more specifically aims to improve the lock described and shown in European patent application No. 8,340,0367.5 filed on February 22, 1983 in the name of the Company INITIAL SARL and published under N. 0 088 012.

On se reportera d'ailleurs utilement à la demande de brevet européenne 0 088 012 pour la bonne compréhension de la présente invention.Reference will moreover usefully be made to European patent application 0 088 012 for a good understanding of the present invention.

La serrure à cylindre décrite dans cette demande de brevet européenne antérieure comporte un stator qui enveloppe un rotor associé à un pêne et au moins un organe de blocage disposé entre le rotor et le stator, l'organe de blocage étant susceptible d'être déplacé entre une position de verrouillage dans laquelle il interdit la rotation du rotor par rapport au stator et une position neutre dans laquelle il autorise la rotation de ce rotor, une pluralité d'éléments de codage coaxiaux comportant chacun sur leur périphérie, une encoche destinée à recevoir l'organe de blocage en position neutre, ainsi que des organes d'entraînement adaptés pour entraîner la rotation de chacun des éléments de codage lorsque l'un des éléments qui lui est immédiatement adjacent est lui-même entraîné en rotation, et un organe rotatif de décodage des éléments, adapté pour assurer l'entraînement en rotation de l'un de ceux-ci, et pour permettre l'alignement des encoches.The cylinder lock described in this earlier European patent application comprises a stator which envelops a rotor associated with a bolt and at least one blocking member disposed between the rotor and the stator, the blocking member being capable of being moved between a locking position in which it prohibits the rotation of the rotor relative to the stator and a neutral position in which it authorizes the rotation of this rotor, a plurality of coaxial coding elements each comprising on their periphery, a notch intended to receive the blocking member in neutral position, as well as drive members adapted to drive the rotation of each of the coding elements when one of the elements which is immediately adjacent to it is itself driven in rotation, and a rotary member of decoding of the elements, adapted to ensure the rotational drive of one of them, and to allow the alignment of the notches.

Pour opérer un changement de combinaison, les serrures décrites dans la demande de brevet européenne n° 0 088 012 précitée exigeaient l'ouverture de la serrure et le démontage des différents éléments de codage afin de modifier la position relative des encoches et organes d'entraînement sur chaque élément.To operate a change of combination, the locks described in the aforementioned European patent application No. 0 088 012 required the opening of the lock and the disassembly of the different coding elements in order to modify the relative position of the notches and drive members. on each item.

Une telle opération de démontage, fastidieuse et fort délicate, ne peut en fait être réalisée que par des spécialistes connaissant parfaitement la structure et le fonctionnement de la serrure.Such a tedious and very delicate disassembly operation can in fact only be carried out by specialists who are fully aware of the structure and operation of the lock.

Cette contrainte a limité le développement des serrures décrites dans la demande de brevet européenne n° 0 088 012.This constraint limited the development of the locks described in European patent application No. 0 088 012.

La présente Invention vient améliorer la situation en proposant une serrure du type précité caractérisée par le fait que:

  • - chaque élément de codage est formé en combinaison d'une couronne extérieure munie de l'encoche apte à recevoir l'organe de blocage, et d'un disque central muni des organes d'entraînement, la surface périphérique intérieure des couronnes et la surface périphérique extérieure des disques centraux étant adaptées pour permettre l'assemblage de ceux-ci selon une multiplicité de positions angulaires prédéterminées,
  • - des intercalaires sont prévus entre les différents éléments de codage, et les couronnes extérieures et les disques centraux de chaque élément de codage sont susceptibles de déplacement relatif axial,
The present invention improves the situation by proposing a lock of the aforementioned type, characterized in that:
  • each coding element is formed in combination with an outer ring provided with the notch capable of receiving the blocking member, and a central disc provided with the driving members, the inner peripheral surface of the rings and the surface outer peripheral of the central discs being adapted to allow their assembly according to a multiplicity of predetermined angular positions,
  • dividers are provided between the different coding elements, and the outer rings and the central discs of each coding element are capable of relative axial displacement,

et par le fait que la serrure comprend en outre un organe de débrayage adapté pour débrayer les couronnes extérieures et disques centraux de chaque élément de codage par déplacement axial relatif de ceux-ci lorsque les couronnes extérieures sont immobilisées en rotation par un organe de retenue afin de permettre en position débrayée un pivotement relatif des couronnes et disques centraux de chaque élément de codage par actionnement de l'organe rotatif de décodage pour opérer un changement de combinaison de la serrure.and by the fact that the lock further comprises a disengaging member adapted to disengage the outer rings and central discs of each coding element by relative axial displacement thereof when the outer rings are immobilized in rotation by a retaining member so to allow in the disengaged position a relative pivoting of the central rings and discs of each coding element by actuation of the rotary decoding member to effect a change in combination of the lock.

Comme cela sera explicité en détail par la suite grâce à la possibilité de débrayage existant, selon l'invention, entre les couronnes extérieures et les disques centraux des éléments de codage, la combinaison de la serrure déterminée par la position relative des encoches adapté es pour recevoir l'organe de blocage et des organes d'entraînement, sur chaque élément, peut être modifiée, automatiquement, sans démonter la serrure, par actionnement de l'organe rotatif de décodage.As will be explained in detail below thanks to the possibility of disengaging existing, according to the invention, between the outer rings and the central discs of the coding elements, the combination of the lock determined by the relative position of the notches adapted for receiving the blocking member and the driving members, on each element, can be modified, automatically, without removing the lock, by actuation of the rotary decoding member.

Le document US-A-4 350 030 (BROMLEY R.L) concerne une serrure pour valise qui comprend une broche cylindrique centrale, un barillet de commande monté à rotation sur la broche, un manchon de commande engagé libre de rotation sur la broche et lié à rotation avec le barillet, deux disques centraux montés à rotation sur la broche, des pions d'entraînement prévus sur le manchon de commande et les disques centraux pour induire la rotation de chacun de ces éléments lorsque l'un des éléments qui lui est immédiatement adjacent est lui-même entraîné en rotation par actionnement du barillet, trois couronnes extérieures immobilisées en translation dans le corps de la serrure et adaptées pour venir en prise respectivement avec le manchon de commande et l'un des disques centraux, selon une multiplicité de positions angulaires prédéterminées, grâce à des dentelures, un organe de débrayage, qui lorsqu'il est déplacé en translation parallèlement à l'axe de la broche, en direction du barillet, assure un débrayage des couronnes extérieures par rapport au manchon de commande et des disques centraux pour permettre un changement de combinaison par actionnement du barillet en modifiant la position angulaire relative des couronnes extérieures par rapport au manchon de commande et aux disques centraux, et un ressort hélicoïdal qui sollicite les disques centraux et le manchon de commande en prise avec l'une respective des couronnes extérieures.Document US-A-4 350 030 (BROMLEY RL) relates to a suitcase lock which comprises a central cylindrical spindle, a control barrel rotatably mounted on the spindle, a control sleeve engaged free of rotation on the spindle and linked to rotation with the barrel, two central discs mounted for rotation on the spindle, drive pins provided on the control sleeve and the central discs to induce rotation of each of these elements when one of the elements immediately adjacent to it is itself driven in rotation by actuation of the barrel, three outer rings immobilized in translation in the body of the lock and adapted to engage respectively with the control sleeve and one of the central disks, according to a multiplicity of angular positions predetermined, thanks to serrations, a disengaging member, which when moved in translation parallel to the axis of the spindle, in the direction of the barrel, ensures a disengagement of the outer rings relative to the control sleeve and the central discs to allow a change of combination by actuation of the barrel by modifying the relative angular position of the outer rings relative to the control sleeve and the central discs, and a helical spring which requests the central discs and the control sleeve engaged with a respective one of the outer rings.

Pour éviter les risques d'entraînement parasite en rotation des organes de codage (disques de codage et couronnes extérieures), par friction, au cours du fonctionnement de la serrure ou du changement de combinaison, il est indispensable, selon le document USA-A 350 030, de prévoir un ressort à lamelle qui repose contre la périphérie de chacune des couronnes extérieures ainsi que contre la périphérie extérieure du manchon de commande et des disques centraux pour freiner la libre rotation de ceux-ci.To avoid the risk of parasitic entrainment in rotation of the coding members (coding discs and outer rings), by friction, during the operation of the lock or the change of combination, it is essential, according to document USA-A 350 030, to provide a leaf spring which rests against the periphery of each of the crowns external as well as against the external periphery of the control sleeve and the central discs to slow the free rotation of these.

Le ressort à lamelle requis dans la structure proposée par le document US-A 350 030 d'une part, grève le prix de revient d'une telle serrure, d'autre part réduit la fiabilité de celle-ci.The leaf spring required in the structure proposed by document US-A 350 030 on the one hand, increases the cost price of such a lock, on the other hand reduces the reliability thereof.

En effet, une telle serrure ne peut plus fonctionner dès lors que le ressort à lamelle n'assure plus un freinage efficace des différents éléments de codage et où de ce fait ceux-ci s'entraînent l'un l'autre par friction.Indeed, such a lock can no longer function as soon as the leaf spring no longer ensures effective braking of the different coding elements and where therefore these drive each other by friction.

De plus, les éléments de codage décrits et représentés dans le document US-A 350 030 ne sont pas formés en combinaison d'une couronne extérieure et d'un disque central dont les surfaces périphériques intérieure et extérieure respectivement sont adaptées pour permettre l'assemblage de ces éléments.In addition, the coding elements described and represented in document US-A 350 030 are not formed in combination with an outer ring and a central disc, the inner and outer peripheral surfaces of which are respectively adapted to allow assembly. of these elements.

En effet, selon le document US-A 350 030, ces éléments de codage sont formés par juxtaposition des couronnes extérieures et du manchon de commande ou des disques.In fact, according to document US-A 350 030, these coding elements are formed by juxtaposition of the outer rings and of the control sleeve or of the discs.

La coopération entre ces éléments n'est pas établie au niveau de surfaces périphériques, mais grâce à une dent triangulaire d'extension axiale solidaire du manchon de commande ou des disques qui pénètre dans des cannelures complémentaires débouchant sur une surface transversale, et non point périphérique, des couronnes extérieures.The cooperation between these elements is not established at the level of peripheral surfaces, but thanks to a triangular tooth of axial extension integral with the control sleeve or the discs which penetrates into complementary grooves opening onto a transverse surface, and not peripheral point. , outer crowns.

En conséquence, lors de la rotation du barillet, si le ressort à lamelle assure un freinage par friction trop important sur les couronnes extérieures, la dent triangulaire peut sortir des cannelures prévues sur les couronnes extérieures, en comprimant le ressort hélicoïdal, sans induire la rotation desdites couronnes.Consequently, during the rotation of the barrel, if the leaf spring ensures excessive friction braking on the outer rings, the triangular tooth can come out of the grooves provided on the outer rings, by compressing the helical spring, without inducing rotation of said crowns.

L'homme de l'art comprendra aisément que dans la pratique il est fort difficile, pour ne pas dire impossible, d'élaborer un tel ressort à lamelle.Those skilled in the art will readily understand that in practice it is very difficult, if not impossible, to develop such a leaf spring.

En effet, celui-ci doit d'une part être suffisamment rigide pour opérer un freinage efficace des couronnes extérieures afin d'éviter un entraînement non intentionnel en rotation, par friction, de ces couronnes, d'autre part être suffisamment souple pour éviter que lors de l'entraînement du barillet les dents de commande n'échappent aux canelures complémentaires.Indeed, it must on the one hand be rigid enough to operate an effective braking of the outer crowns in order to avoid an unintentional rotational drive, by friction, of these crowns, on the other hand be flexible enough to avoid that during the barrel drive, the control teeth do not escape the complementary grooves.

De plus, la serrure décrite dans le document US-A-4 350 030 est très sensible au gel. En effet, dès qu'une trace d'humidité a pénétré dans cette serrure, lors d'un gel, le ressort à lamelle colle contre les couronnes extérieures et de ce fait, lors de l'entraînement du barillet, les dents de commande échappent aux canelures complémentaires et la combinaison de la serrure est alors perdue de façon irrémédiable de façon identique au cas d'un ressort à lamelle trop rigide.In addition, the lock described in document US-A-4 350 030 is very sensitive to frost. In fact, as soon as a trace of humidity has entered this lock, during a frost, the leaf spring sticks against the outer crowns and therefore, during the barrel drive, the control teeth escape with complementary grooves and the combination of the lock is then irretrievably lost in the same way as in the case of a too rigid leaf spring.

Ces différents inconvénients sont éliminés, selon la présente invention, grâce (1) à l'utilisation d'intercalaires et (2) à l'engagement complémentaire des surfaces périphériques intérieure et extérieure des couronnes extérieures et disques centraux composant chaque élément de codage.These various drawbacks are eliminated, according to the present invention, thanks to (1) the use of spacers and (2) to the complementary engagement of the inner and outer peripheral surfaces of the outer rings and central discs making up each coding element.

Selon un développement de la présente invention considérée actuellement comme préférentiel, la serrure comprend un passage adapté pour permettre l'introduction dans celle-ci d'un organe de retenue apte à venir en prise avec les couronnes extérieures pour immobiliser celles-ci en rotation avant de procéder au débrayage des couronnes extérieures et disques centraux.According to a development of the present invention currently considered preferential, the lock comprises a passage adapted to allow the introduction therein of a retaining member capable of engaging with the outer rings to immobilize them in front rotation disengage the outer rings and central discs.

Selon un mode de réalisation avantageux, l'organe de débrayage est formé d'une broche susceptible de déplacement axial dans la serrure, et les différents disques centraux sont munis d'alésages centraux et sont engagés libres de rotation mais immobilisés en déplacement axial relatif sur la broche.According to an advantageous embodiment, the declutching member is formed by a pin capable of axial displacement in the lock, and the various central disks are provided with central bores and are engaged free to rotate but immobilized in relative axial displacement on spindle.

L'immobilisation en déplacement axial relatif des disques centraux et de la broche est de préférence réalisée par des intercalaires engagés sur la broche entre les disques et immobilisés en rotation sur la broche.The immobilization in relative axial displacement of the central discs and of the spindle is preferably carried out by spacers engaged on the spindle between the discs and immobilized in rotation on the spindle.

Selon un mode de réalisation particulier, ces intercalaires sont formés de couronnes étagées, la portion de plus faible section des intercalaires, engagée dans l'alésage interne des disques tenant lieu de palier de rotation pour ceux-ci, tandis que la portion de plus forte section des intercalaires interdit le déplacement axial relatif des disques sur la broche.According to a particular embodiment, these spacers are formed of stepped rings, the portion of smaller section of the spacers, engaged in the internal bore of the discs taking the place of a rotation bearing for the latter, while the portion of stronger section of the spacers prohibits the relative axial movement of the discs on the spindle.

La broche, les intercalaires précités et les disques centraux constituent alors un sous-ensemble dont toutes les pièces sont solidaires en translation axiale mais dont seuls les disques centraux sont libres en rotation.The spindle, the above-mentioned spacers and the central discs then constitute a sub-assembly of which all the parts are integral in axial translation but of which only the central discs are free to rotate.

Selon un autre développement de la présente invention, le rotor définit un logement généralement cylindrique dans lequel sont engagés, libres de rotation, mais immobilisées en déplacement axial relatif les couronnes extérieures des éléments de codage.According to another development of the present invention, the rotor defines a generally cylindrical housing in which are engaged, free to rotate, but immobilized in axial displacement relative to the outer rings of the coding elements.

De façon alors préférentielle, le passage adapté pour permettre l'introduction d'un organe de retenue en prise avec les couronnes extérieures est réalisé dans le rotor.Preferably then, the passage adapted to allow the introduction of a retaining member engaged with the outer rings is produced in the rotor.

Selon l'invention, l'immobilisation en déplacement axial relatif des couronnes extérieures dans le rotor est de préférence réalisée par des intercalaires engagés entre les couronnes adjacentes et immobilisés en rotation sur le rotor.According to the invention, the immobilization in relative axial movement of the outer rings in the rotor is preferably carried out by spacers engaged between the adjacent rings and immobilized in rotation on the rotor.

Le rotor, les couronnes extérieures des éléments de codage et les intercalaires associés à ces couronnes constituent un sous-ensemble dont toutes les pièces sont solidaires en translation axiale mais dont seules les couronnes extérieures des éléments de codage sont libres en rotation.The rotor, the outer rings of the coding elements and the spacers associated with these rings constitute a sub-assembly of which all the parts are integral in axial translation but of which only the outer rings of the coding elements are free to rotate.

Selon un autre développement avantageux de l'invention, les épaisseurs axiales des intercalaires sont supérieures à celles des couronnes et disques centraux des éléments de codage et au moins légèrement supérieures a la course de translation axiale de la broche formant organe de débrayage.According to another advantageous development of the invention, the axial thicknesses of the spacers are greater than those of the central rings and discs of the elements of coding and at least slightly greater than the axial translational travel of the spindle forming the declutching member.

Selon une première variante de réalisation conforme à la présente invention, la broche est munie d'une lumière transversale dans laquelle est engagée une goupille en prise avec le rotor pour immobiliser la broche en rotation sur le rotor tout en limitant son coulissement axial relatif.According to a first alternative embodiment according to the present invention, the spindle is provided with a transverse slot in which is engaged a pin engaged with the rotor to immobilize the spindle in rotation on the rotor while limiting its relative axial sliding.

Selon une seconde variante de réalisation conforme à la présente invention, la broche est munie de deux alésages transversaux dans lesquels est engagée alternativement une goupille amovible en prise avec le rotor pour immobiliser la broche en rotation sur le rotor et définir deux positions axiales de la broche sur le rotor correspondant respectivement à l'embrayage et au débrayage des couronnes et disques centraux des éléments de codage.According to a second alternative embodiment in accordance with the present invention, the spindle is provided with two transverse bores in which is engaged alternately a removable pin engaged with the rotor to immobilize the spindle in rotation on the rotor and define two axial positions of the spindle on the rotor corresponding respectively to the engagement and disengagement of the crowns and central discs of the coding elements.

Selon une troisième variante de réalisation considérée actuellement comme préférentielle, la broche est de section polygonale et l'alésage correspondant ménagé dans le rotor est de même section pour immobiliser la broche en rotation, mais cet alésage est semi-borgne pour limiter le corps de la broche vers l'arrière de la serrure, et cet alésage se termine par un trou fileté de plus faible section débouchant vers l'arrière du rotor pour permettre le passage d'une vis, amovible le cas échéant, agissant en poussée ou en traction sur la broche pour assurer son déplacement axial de débrayage.According to a third embodiment currently considered preferential, the spindle is of polygonal section and the corresponding bore formed in the rotor has the same section to immobilize the spindle in rotation, but this bore is semi-blind to limit the body of the pin towards the rear of the lock, and this bore ends in a threaded hole of smaller section opening out towards the rear of the rotor to allow the passage of a screw, removable if necessary, acting in pushing or pulling on the spindle to ensure its axial disengagement movement.

Selon l'invention, l'organe rotatif de décodage est avantageusement déplaçable axialement pour assurer la rotation du rotor et l'ouverture de la serrure lorsque les encoches prévues sur les couronnes extérieures sont alignées.According to the invention, the rotary decoding member is advantageously axially displaceable to ensure the rotation of the rotor and the opening of the lock when the notches provided on the outer rings are aligned.

Selon un mode de réalisation particulier considéré actuellement comme préférentiel, l'organe rotatif de décodage est formé d'un cylindre comportant des dentelures aptes à venir en prise avec le rotor pour assurer la rotation de celui-ci après alignement des encoches.According to a particular embodiment currently considered preferential, the rotary decoding member is formed by a cylinder comprising serrations capable of coming into engagement with the rotor to ensure the rotation of the latter after alignment of the notches.

L'organe rotatif de décodage est avantageusement disposé sur la face avant du stator et possède des structures aptes à coopérer par relation d'entraînement avec un cadran gradué en regard d'un indice porté par le stator.The rotary decoding member is advantageously arranged on the front face of the stator and has structures capable of cooperating by drive relationship with a graduated dial facing an index carried by the stator.

Selon un autre développement de l'invention permettant une réalisation simple et compacte, un ressort est disposé entre l'organe rotatif de décodage et la broche formant organe de débrayage pour écarter initialement l'organe rotatif de décodage et le rotor afin d'autoriser l'entraînement des éléments de codage sans interférer avec le rotor, tout en autorisant, après compression du ressort, l'entraînement du rotor par l'organe rotatif de décodage.According to another development of the invention allowing a simple and compact embodiment, a spring is disposed between the rotary decoding member and the spindle forming the declutching member to initially separate the rotary decoding member and the rotor in order to allow the drive of the coding elements without interfering with the rotor, while allowing, after compression of the spring, the drive of the rotor by the rotary decoding member.

Les dentelures de l'organe rotatif de décodage sont avantageusement biseautées de même que les saillies du rotor sur lesquelles elles peuvent venir en prise afin que l'organe de décodage soit repoussé vers l'avant et perde sa prise sur le rotor si les éléments de codage n'étaient pas alignés (non composition de la combinaison) et donc que l'organe de blocage n'ait pas libéré le rotor.The serrations of the rotary decoding member are advantageously bevelled as are the projections of the rotor on which they can engage so that the decoding member is pushed forward and loses its grip on the rotor if the elements of coding were not aligned (non composition of the combination) and therefore that the locking member did not release the rotor.

Cette disposition est particulièrement avantageuse dans le cas d'une tentative frauduleuse d'actionnement du rotor avant composition de la combinaison.This arrangement is particularly advantageous in the case of a fraudulent attempt to actuate the rotor before composition of the combination.

De telles dentelures de l'organe rotatif de décodage seront dénommées "dentelures glissantes" par la suite.Such serrations of the rotary decoding member will hereinafter be referred to as "sliding serrations".

De préférence, selon l'invention, les organes d'entraînement adaptés pour entraîner la rotation de chacun des éléments de codage sont formés de pions de codage, en saillie de part et d'autre du plan moyen de chacun des disques de codage.Preferably, according to the invention, the drive members adapted to drive the rotation of each of the coding elements are formed of coding pins, projecting on either side of the mean plane of each of the coding discs.

Selon un autre développement de la présente invention, l'organe rotatif de décodage est muni de structures aptes à venir en relation d'entraînement avec les moyens d'entraînement de l'un des disques centraux, quelle que soit la position axiale de celui-ci, en position débrayée ou non débrayée pour assurer dans un cas le changement de combinaison, dans l'autre le décodage par alignement des encoches.According to another development of the present invention, the rotary decoding member is provided with structures capable of coming into drive relation with the drive means of one of the central discs, whatever the axial position thereof. ci, in the disengaged or disengaged position to ensure in one case the change of combination, in the other the decoding by alignment of the notches.

La présente invention concerne également un outil de changement de combinaison de la serrure à cylindre précitée qui comprend une aiguille apte à pénétrer dans la serrure pour venir en prise avec les couronnes extérieures des éléments de codage afin d'immobiliser celles-ci en rotation, un insert qui porte l'aiguille et est adapté pour assurer le débrayage des couronnes extérieures et disques centraux par sollicitation axiale.The present invention also relates to a tool for changing the combination of the aforementioned cylinder lock which comprises a needle capable of penetrating the lock to engage the outer rings of the coding elements in order to immobilize the latter in rotation, a insert which carries the needle and is adapted to disengage the outer rings and central discs by axial stress.

Selon un mode de réalisation préférentiel, l'insert est muni d'un filetage externe apte à venir en prise dans un alésage taraudé complémentaire ménagé dans la serrure pour contrôler l'amplitude de déplacement axial relatif entre les couronnes extérieures et les disques centraux, lors du debrayage.According to a preferred embodiment, the insert is provided with an external thread capable of engaging in a complementary tapped bore formed in the lock to control the amplitude of relative axial movement between the outer rings and the central discs, during of the clutch.

D'autres particularités et avantages de la présente invention apparaîtront à la lecture de la description détaillée qui va suivre et en regard des dessins annexés donnés à titre d'exemple non limitatif et sur lesquels:

  • - la figure 1 représente une vue schématique éclatée en perspective d'une serrure conforme à la présente invention,
  • - la figure 2 représente une vue similaire sur laquelle le stator, le rotor et l'organe rotatif de décodage sont représentés en coupe axiale afin de montrer la structure interne de ces éléments.
Other particularities and advantages of the present invention will appear on reading the detailed description which follows and with reference to the appended drawings given by way of nonlimiting example and in which:
  • FIG. 1 represents a schematic exploded perspective view of a lock according to the present invention,
  • - Figure 2 shows a similar view in which the stator, the rotor and the rotary decoding member are shown in axial section in order to show the internal structure of these elements.

D'une façon générale, la serrure conforme à la présente invention comprend pour l'essentiel un stator 10, un rotor 40, un organe rotatif de décodage 70, un organe de blocage 90 et une pluralité d'éléments de codage comprenant chacun en combinaison une couronne extérieure 100 et un disque central 120.Generally, the lock according to the present invention essentially comprises a stator 10, a rotor 40, a rotary decoding member 70, a locking member 90 and a plurality of coding elements each comprising in combination an outer ring 100 and a central disc 120.

On va dans un premier temps décrit en détail la structure de chacun des éléments composant la serrure conforme à la présente invention, telle que représentée sur les figures 1 et 2.We will first describe in detail the structure of each of the elements making up the lock according to the present invention, as shown in FIGS. 1 and 2.

Pour faciliter la description, on entendra par la suite par "face avant" de la serrure, la surface de celle-ci accessible à l'utilisateur (partie gauche des figures), tandis que "la face arrière" de la serrure désignera l'extrémité de celle-ci équipée du pêne 200 (partie droite des figures).To facilitate the description, the expression “ following by "front face" of the lock, the surface thereof accessible to the user (left part of the figures), while "the rear face" of the lock will designate the end of the latter equipped with the bolt 200 (right part of the figures).

Le stator 10 possède la forme générale d'une cylindre creux définissant un logement interne cylindrique 11, de section constante, apte à recevoir le rotor 40.The stator 10 has the general shape of a hollow cylinder defining a cylindrical internal housing 11, of constant section, capable of receiving the rotor 40.

Le logoment cylindrique 11 est muni au niveau de son extrémité libre avant d'une nervure annulaire 12.The cylindrical logoment 11 is provided at its free end before an annular rib 12.

Cette dernière définit, par sa surface périphérique interne une ouverture cylindrique 13, à l'avant du stator 10 autorisant l'accès à l'organe de décodage 70.The latter defines, by its internal peripheral surface a cylindrical opening 13, at the front of the stator 10 allowing access to the decoding member 70.

La nervure 12 définit par ailleurs une surface d'appui annulaire 14 d'orientation radiale en regard de l'axe du logoment cylindrique 11, dirigée vers l'arrière du stator 10.The rib 12 also defines an annular bearing surface 14 of radial orientation opposite the axis of the cylindrical housing 11, directed towards the rear of the stator 10.

De préférence, tel que cela est illustré sur les figures, le stator 10 est muni de plus, au niveau de son extrémité avant, d'une nervure annulaire extérieure 15 facilitant l'installation de la serrure sur un appareil.Preferably, as illustrated in the figures, the stator 10 is further provided, at its front end, with an outer annular rib 15 facilitating the installation of the lock on an appliance.

Le stator 10 comporte avantageusement sur sa face avant 16 ou sur la nervure 15 un index gravé, apte à coopérer avec un cadran gradué 300 et servant de point de référence pour la composition du code.The stator 10 advantageously comprises on its front face 16 or on the rib 15 an engraved index, able to cooperate with a graduated dial 300 and serving as a reference point for the composition of the code.

Le logoment cylindrique 11 est muni à proximité de son extrémité arrière d'une gorge annulaire 17 adaptée pour recevoir un circlip intérieur 160 (ou tout autre moyen fonctionnellement équivalent, permettant d'immobiliser le rotor 40 dans le logoment cylindrique 11 du stator en avant du circlip 160 précité.The cylindrical logoment 11 is provided near its rear end with an annular groove 17 adapted to receive an inner circlip 160 (or any other functionally equivalent means, making it possible to immobilize the rotor 40 in the cylindrical logoment 11 of the stator in front of the circlip 160 above.

Le logement cylindrique 11 possède en outre une rainure rectiligne 18, s'étendant longitudinalement, c'est-à-dire parallèlement à l'axe du logement cylindrique 11. Cette rainure 18 débouche au niveau de la face arrière 19 du stator 10.The cylindrical housing 11 also has a rectilinear groove 18, extending longitudinally, that is to say parallel to the axis of the cylindrical housing 11. This groove 18 opens at the rear face 19 of the stator 10.

La rainure 18 est adaptée pour recevoir l'organe de blocage 90 formé en l'espèce d'une tige cylindrique.The groove 18 is adapted to receive the locking member 90 formed in this case of a cylindrical rod.

La profondeur de la rainure 18 et la section transversale de l'organe de blocage 90 sont adaptées de telle sorte que l'organe de blocage puisse être déplacé entre une position de verrouillage dans laquelle l'organe de blocage interfère entre le stator et le rotor pour interdire la rotation du rotor par rapport au stator, et une position neutre (obtenue lorsque des encoches prévues sur la périphérie des couronnes 100 sont alignées) dans laquelle l'organe de blocage autorise la rotation du rotor 40.The depth of the groove 18 and the cross section of the locking member 90 are adapted so that the locking member can be moved between a locking position in which the locking member interferes between the stator and the rotor. to prevent rotation of the rotor relative to the stator, and a neutral position (obtained when notches provided on the periphery of the crowns 100 are aligned) in which the locking member authorizes rotation of the rotor 40.

De préférence, l'organe de blocage 90 possède un diamètre double de l'épaisseur de la paroi tubulaire du rotor.Preferably, the locking member 90 has a diameter twice the thickness of the tubular wall of the rotor.

On remarquera enfin, à l'examen de la figure 2, la présence d'une saillie 20, sur la périphérie interne du logement cylindrique 11, en arrière de la gorge annulaire 17.Finally, it will be noted, on examining FIG. 2, the presence of a projection 20, on the internal periphery of the cylindrical housing 11, behind the annular groove 17.

Cette saillie 20 sert de butée à un limiteur de course 170.This projection 20 serves as a stop for a stroke limiter 170.

Comme cela est illustré schématiquement sur les figures, la rainure 18 destinée à recevoir l'organe de blocage 90 est de préférence ménagée en partie inférieure du stator 10. Ainsi, l'organe de blocage 90 tend à reposer par gravité sur le fond de la rainure 18 et à s'écarter ainsi des couronnes extérieures 100 des éléments de codage. Cette disosition procure une défense au "tatage" dans la mesure où l'organe de blocage 90 ne peut entrer en contact avec la périphérie des couronnes extérieures 100 que si l'on tente d'entraîner le rotor, c'est-à-dire à un moment où le fraudeurpotentiel est dépourvu de moyens de faire tourner les éléments de codage.As illustrated schematically in the figures, the groove 18 intended to receive the blocking member 90 is preferably formed in the lower part of the stator 10. Thus, the blocking member 90 tends to rest by gravity on the bottom of the groove 18 and thus to move away from the outer rings 100 of the coding elements. This arrangement provides a defense to "tatage" insofar as the blocking member 90 can only come into contact with the periphery of the outer rings 100 if an attempt is made to drive the rotor, that is to say at a time when the potential fraudster has no means of rotating the coding elements.

Le rotor 40 comprend un manchon tubulaire 41, ouvert vers l'avant et fermné au moins partiellement à l'arrière par une cloison transversale 42.The rotor 40 comprises a tubular sleeve 41, open towards the front and closed at least partially at the rear by a transverse partition 42.

Le rotor se prolonge vers l'arrière par une structure allongée ou prolongment 43 centrée sur l'axe du manchon tubulaire 41, mais non symétrique de révolution par rapport à cet axe. Comme représenté sur les figures, la structure 43 présente par exemple une section polygonale dans un plan perpendiculaire à l'axe du manchon tubulaire 41.The rotor is extended towards the rear by an elongated structure or an extension 43 centered on the axis of the tubular sleeve 41, but not symmetrical in revolution with respect to this axis. As shown in the figures, the structure 43 has for example a polygonal section in a plane perpendicular to the axis of the tubular sleeve 41.

Le bord libre avant du manchon tubulaire 41 est muni d'une pluralité de pions 44, en saillie axialement. Ces pions 44 sont destinés à coopérer, par engagement, avec une série de dentelures annulaires 71 réalisées à la façon d'un pignon denté sur la périphérie extérieure de l'organe de décodage 70.The free front edge of the tubular sleeve 41 is provided with a plurality of pins 44, projecting axially. These pins 44 are intended to cooperate, by engagement, with a series of annular serrations 71 produced in the manner of a toothed pinion on the outer periphery of the decoding member 70.

Pour ce faire, la répartition angulaire des pions 44 est adaptée à la répartition angulaire des dentelures.To do this, the angular distribution of the pins 44 is adapted to the angular distribution of the serrations.

De préférence, comme cela a été évoqué précédemment, les dentelures 71 et les pions 44 sont biseautées.Preferably, as mentioned above, the serrations 71 and the pins 44 are bevelled.

Le manchon tubulaire 41 est en outre muni de deux fentes rectilignes 45, 46, traversant son épaisseur, et d'orientation longitudinale, c'est-à-dire parallèles à l'axe du manchon tubulaire 41.The tubular sleeve 41 is further provided with two rectilinear slots 45, 46, passing through its thickness, and of longitudinal orientation, that is to say parallel to the axis of the tubular sleeve 41.

La fente 45 s'étend sensiblement sur toute la longueur du manchon tubulaire 41.The slot 45 extends substantially over the entire length of the tubular sleeve 41.

De préférence, les fentes 45, 46 sont diamétralement opposées en regard de l'axe du manchon tubulaire 41.Preferably, the slots 45, 46 are diametrically opposite opposite the axis of the tubular sleeve 41.

La fente inférieure 46 est destinée à recevoir l'organe de blocage 90. La largeur de la fente 46 est donc au moins égale au diamètre de l'organe de blocage 90.The lower slot 46 is intended to receive the blocking member 90. The width of the slot 46 is therefore at least equal to the diameter of the blocking member 90.

De préférence, la fente inférieure 46 ne débouche pas à l'avant de la serrure pour limiter la translation de l'organe de blocage 90.Preferably, the lower slot 46 does not open at the front of the lock in order to limit the translation of the locking member 90.

La fente supérieure 45 est destinée à recevoir une excroissance 181 de couronnes intercalaires 180, disposées entre les diverses couronnes de codage 100, et dont la structure sera décrite plus en détail par la suite. L'engagement des excroissances 181 dans la fente 45 a pour but d'immobiliser en rotation les intercalaires 180 par rapport au rotor 40.The upper slot 45 is intended to receive a protrusion 181 of intermediate rings 180, arranged between the various coding rings 100, and the structure of which will be described in more detail below. The purpose of engaging the protuberances 181 in the slot 45 is to immobilize the spacers 180 in rotation relative to the rotor 40.

Le logement interne cylindrique 47 est défini par le manchon tubulaire 41 et adapté pour recevoir les couronnes extérieures 100 et les intercalaires 180 précités. Ces couronnes 100 et intercalaires 180 sont immobilisés dans le logement cylindrique 47 du rotor 40 en appui contre la cloison transversale 42 de ce rotor par un circlip intérieur 190 (ou tout autre moyen fonctionnellement équivalent) engagé dans une qorge annulaire 48 ménagée sur la périphérie interne du logement 47.The cylindrical internal housing 47 is defined by the tubular sleeve 41 and adapted to receive the outer rings 100 and the above-mentioned spacers 180. These rings 100 and spacers 180 are immobilized in the cylindrical housing 47 of the rotor 40 bearing against the transverse partition 42 of this rotor by an internal circlip 190 (or any other functionally equivalent means) engaged in an annular groove 48 formed on the internal periphery housing 47.

Le prolongement arrière 43 et la cloison transversale 42 sont percés d'un alésage central 49, partiellement fileté à son extrémité arrière, comme cela est schématiquement illustré en 50.The rear extension 43 and the transverse partition 42 are pierced with a central bore 49, partially threaded at its rear end, as is schematically illustrated at 50.

Le prolongement 43 est en outre percé radialement d'un trou 51 de préférence traversant.The extension 43 is also pierced radially with a hole 51, preferably through.

Le prolongement 43 possède sur sa surface extérieure une gorge 52 adaptée pour recevoir un circlip extérieur 220 (ou tout autre moyen fonctionnellement equivalent) permettant de retenir le pêne 200 sur le prolongement 43.The extension 43 has on its outer surface a groove 52 adapted to receive an external circlip 220 (or any other functionally equivalent means) making it possible to retain the bolt 200 on the extension 43.

Le rotor 40 est enfin muni dans sa cloison transversale 42 d'un perçage longitudinal traversant 53, permettant l'introduction d'une aiguille 251, dans la chambre cylindrique 47 du rotor 40, par l'arrière de la serrure, afin d'immobiliser en rotation les couronnes 100.The rotor 40 is finally provided in its transverse partition 42 with a longitudinal through bore 53, allowing the introduction of a needle 251, into the cylindrical chamber 47 of the rotor 40, by the rear of the lock, in order to immobilize in rotation the crowns 100.

Le limiteur de course 170 précité est formé d'une plaque plane généralement circulaire possédant deux surfaces radiales d'appui 173, 174. Le limiteur de course 170 est muni d'une ouverture centrale 175 complémentaire de la section transversale du prolongement 43 (polygonale selon l'illustration) afin d'interdire toute rotation relative entre le limiteur de course 170 et le rotor 40.The above-mentioned stroke limiter 170 is formed by a generally circular flat plate having two radial bearing surfaces 173, 174. The stroke limiter 170 is provided with a central opening 175 complementary to the cross section of the extension 43 (polygonal according to the illustration) in order to prohibit any relative rotation between the stroke limiter 170 and the rotor 40.

Enfin, le limiteur de course 170 est muni, dans son épaisseur, d'un alésage traversant 176 aligné sur l'alesage 53 du rotor 40 et destiné 2 permettre l'insertion de l'aiguille 251 dans le logement cylindrique 47 du manchon tubulaire 41.Finally, the stroke limiter 170 is provided, in its thickness, with a through bore 176 aligned with the bore 53 of the rotor 40 and intended to allow the insertion of the needle 251 into the cylindrical housing 47 of the tubular sleeve 41 .

L'organe rotatif de décodage 70 est formé d'un bloc cylindrique 72 muni sur sa périphérie extérieure d'une couronne annulaire de dentelures 71, de préférence en nombre égal aux graduations 301 du cadran 300.The rotary decoding member 70 is formed of a cylindrical block 72 provided on its outer periphery with an annular ring of serrations 71, preferably in number equal to the graduations 301 of the dial 300.

On rappelle que ces dentelures 71 sont destinées à coopérer avec les pions 44 ménagés sur le rotor 40.It will be recalled that these serrations 71 are intended to cooperate with the pins 44 formed on the rotor 40.

La face avant 73 de l'organe de décodage rotatif 70 est munie de trous borgnes 74, 75, destinés à recevoir des pions 302, 303 formés sur le cadran 300.The front face 73 of the rotary decoding member 70 is provided with blind holes 74, 75, intended to receive pins 302, 303 formed on the dial 300.

De préférence, l'un des alésages référencé 74 sur les figures est centré sur la face avant 73 de l'organe 70, c'est-à-dire coaxial au bloc cylindrique 72, tandis que le second trou borgne 75, parallèle au premier, est excentré.Preferably, one of the bores referenced 74 in the figures is centered on the front face 73 of the member 70, that is to say coaxial with the cylindrical block 72, while the second blind hole 75, parallel to the first , is offset.

La face arrière 76 de l'organe rotatif de décodage 70 est muni également de trous borgnes 77, 78 destinés à recevoir des pions 121A, 122A solidaires d'un disque de codage 120A.The rear face 76 of the rotary decoding member 70 is also provided with blind holes 77, 78 intended to receive pins 121A, 122A secured to a coding disc 120A.

De préférence, comme cela est représenté sur les figures, les alésages 77 et 78 sont diamétralement opposés en regard de l'axe du corps cylindrique 72.Preferably, as shown in the figures, the bores 77 and 78 are diametrically opposite opposite the axis of the cylindrical body 72.

L'appareil comprend trois couronnes de codage 100. Une seule de ces couronnes a été représentée sur les figures afin de simplifier l'illustration.The apparatus comprises three coding rings 100. Only one of these rings has been shown in the figures in order to simplify the illustration.

Chacune des couronnes 100 comporte sur sa périphérie externe, et dans son épaisseur, une encoche 101 de section droite en "U". La profondeur de l'encoche 101 est égale à la moitié du diamètre de l'organe rotatif de blocage 90.Each of the rings 100 has on its outer periphery, and in its thickness, a notch 101 of cross section in "U". The depth of the notch 101 is equal to half the diameter of the rotary blocking member 90.

Par ailleurs, chaque couronne 100 présente sur sa périphérie intérieure des structures 102 en saillie aptes à coopérer par engagement avec la périphérie extérieure 123 des disques centraux de codage 120.Furthermore, each ring 100 has on its inner periphery protruding structures 102 capable of cooperating by engagement with the outer periphery 123 of the central coding disks 120.

De préférence, les structures 102 sont formées d'encoches de section droite trianculaire ou semi-circulaire ou équivalent en nombre égal aux graduations 301 du cadran 300.Preferably, the structures 102 are formed of notches of triancular or semi-circular cross section or equivalent in number equal to the graduations 301 of the dial 300.

La serrure comprend deux couronnes intercalaires 180 destinées à être disposées entre les couronnes de codage 100. Comme cela a été précédemment évoqué, chacune des couronnes intercalaires 180 comporte sur sa périphérie extérieure une excroissance 181 adaptée pour pénétrer dans la fente 45 du rotor 40 afin d'immobiliser les couronnes intercalaires 180 en rotation par rapport au rotor 40.The lock comprises two intermediate rings 180 intended to be arranged between the coding crowns 100. As previously mentioned, each of the intermediate rings 180 has on its outer periphery a projection 181 adapted to penetrate into the slot 45 of the rotor 40 in order to 'immobilize the intermediate rings 180 in rotation relative to the rotor 40.

En outre, chaque couronne intercalaire 180 est munie d'une encoche 182 adaptée pour recevoir l'organe de blocage 90.In addition, each intermediate ring 180 is provided with a notch 182 adapted to receive the blocking member 90.

La position relative de l'excroissance 181 et de l'encoche 182 correspond à la position relative des fentes 45 et 46 sur le rotor 40.The relative position of the projection 181 and the notch 182 corresponds to the relative position of the slots 45 and 46 on the rotor 40.

Comme cela a été précédemment évoqué, de préférence, l'excroissance 181 et l'encoche 182 sont diamétralement opposées.As previously mentioned, preferably, the projection 181 and the notch 182 are diametrically opposite.

Selon le mode de réalisation illustré sur les . figures, l'encoche 182 traverse totalement la couronne intercalaire 180 de telle sorte que celle-ci se présente sous forme d'un anneau ouvert en "C".According to the embodiment illustrated in the. Figures, the notch 182 completely crosses the intermediate ring 180 so that it is in the form of an open ring in "C".

La serrure comprend de plus une broche 280 formant organe de débrayage et adaptée pour supporter les disques de codage 120 ainsi que des intercalaires 140 associés à ceux-ci.The lock further comprises a pin 280 forming a disengaging member and adapted to support the coding discs 120 as well as spacers 140 associated therewith.

Selon l'illustration des figures annexées, la broche 280 est formée de deux portions cylindriques coaxiales 281, 282 présentant un diamètre différent. La section cylindrique 281 de plus faible diamètre, est disposée sur l'avant.According to the illustration of the appended figures, the spindle 280 is formed of two coaxial cylindrical portions 281, 282 having a different diameter. The cylindrical section 281 of smaller diameter, is arranged on the front.

La section cylindrique arrière 282, de plus grand diamètre, est munie d'une lumière 283 traversant transversalement la broche 280.The rear cylindrical section 282, of larger diameter, is provided with a hole 283 transversely passing through the spindle 280.

Le diamètre externe de la section cylindrique 282 est complémentaire de l'alésage 49 du rotor 40 et la position axiale de la lumière 283 sur cette section 282 est adaptée de telle sorte que la lumière 283 soit disposée en regard de l'orifice 51 du rotor 40 pour recevoir une goupille 60 engagée dans l'orifice 51.The external diameter of the cylindrical section 282 is complementary to the bore 49 of the rotor 40 and the axial position of the light 283 on this section 282 is adapted so that the light 283 is placed opposite the orifice 51 of the rotor 40 to receive a pin 60 engaged in the orifice 51.

L'extension longitudinale (dans le sens de l'axe de la broche 280) de la lumière 283 est supérieure au diamètre de la goupille 60, tandis que l'extension transversale de cette même lumière 283 correspond sensiblement au diamètre de la goupille 60 de telle sorte que l'insertion de cette dernière dans l'orifice 51 et dans la lumière 283 immobilise la broche 280 en rotation sur le rotor 40 tout en limitant son coulissement axial relatif.Longitudinal extension (in the direction of the axis of the pin 280) of the light 283 is greater than the diameter of the pin 60, while the transverse extension of this same light 283 corresponds substantially to the diameter of the pin 60 so that the insertion of the latter in the orifice 51 and in the slot 283 immobilizes the spindle 280 in rotation on the rotor 40 while limiting its relative axial sliding.

La zone de fonction entre les deux sections cylindriques 281 et 282 définit une surface annulaire d'appui 284, dirigée vers l'avant, servant de butée pour les intercalaires 140.The function area between the two cylindrical sections 281 and 282 defines an annular bearing surface 284, directed towards the front, serving as a stop for the spacers 140.

La serrure comprend trois intercalaires 140.The lock includes three dividers 140.

Afin de simplifier l'illustration, seul l'un de ces intercalaires a été représenté sur les figures annexées.In order to simplify the illustration, only one of these dividers has been shown in the appended figures.

Chacun des intercalaires 140 est formé d'une couronne étagée.Each of the spacers 140 is formed of a stepped crown.

On entend par là que chaque intercalaire 140 est formé de deux portions cylindriques coaxiales 141, 142, de diamètres différents, et présentant un alésage cylindrique central commun 143.By this is meant that each insert 140 is formed of two coaxial cylindrical portions 141, 142, of different diameters, and having a common central cylindrical bore 143.

Le diamètre interne de l'alésage interne 143 s'adapte au diamètre externe de la plus petite section 281 de la broche 280.The internal diameter of the internal bore 143 adapts to the external diameter of the smallest section 281 of the spindle 280.

Le diamètre externe des plus petites sections des intercalaires 140 s'adapte au diamètre interne d'alésages 124 ménagés en position centrale dans les disques de codage 120, pour tenir lieu de palier de rotation à ceux-ci.The external diameter of the smallest sections of the inserts 140 adapts to the internal diameter of bores 124 formed centrally in the coding disks 120, to act as a bearing for rotation thereof.

Le diamètre externe des plus grandes sections 142 des intercalaires 140 est par ailleurs inférieur au diamètre de rotation de pions d'entraînement 121,122 et 125 prévus en saillie axiale sur les disques de codage 120.The external diameter of the largest sections 142 of the inserts 140 is moreover less than the diameter of rotation of drive pins 121, 122 and 125 provided in axial projection on the coding discs 120.

La serrure comprend trois disques de codage 120. Sur les figures, on a associé des indices A, B et C respectivement à chacun de ces trois disques.The lock comprises three coding discs 120. In the figures, indices A, B and C have been associated respectively with each of these three discs.

Les trois disques 120A, 120B et 120C ont pour caractéristiques communes de posséder un alésage central 124 complémentaire de la plus petite section 141 des intercalaires 140 et de posséder sur leur périphérie des structures 126 aptes à coopérer par engagement, selon une multiplicité de positions angulaires prédéterminées avec les structures 102 des couronnes de codage 100.The three discs 120A, 120B and 120C have the common characteristics of having a central bore 124 complementary to the smallest section 141 of the spacers 140 and of having on their periphery structures 126 capable of cooperating by engagement, according to a multiplicity of predetermined angular positions with the structures 102 of the coding crowns 100.

Selon l'illustration des figures annexées, les structures 126 prévues sur la périphérie extérieure des disques de codage 120 sont formées de dents (par exemple au nombre de trois), régulièrement réparties angulairement à 120° et adaptées pour pénétrer dans les encoches 102 des couronnes de codage 100.According to the illustration of the appended figures, the structures 126 provided on the outer periphery of the coding discs 120 are formed of teeth (for example three in number), regularly distributed angularly at 120 ° and adapted to penetrate into the notches 102 of the crowns coding 100.

Les disques 120A, 1208 et 120C se distinguent par le nombre de pions qu il comporte.The 120A, 1208 and 120C discs are distinguished by the number of pins it contains.

Selon l'illustration des figures annexées, les différents pions sont de forme cylindrique et s'étendent transversalement aux disques de codage 120.According to the illustration in the appended figures, the different pins are cylindrical in shape and extend transversely to the coding discs 120.

Néanmoins, de préférence, ces pions seront formés d'un secteur de couronne égal à une graduation du cadran et définissant deux surfaces d'appui d'orientation radiale en regard de l'axe des disques de codage 120.Nevertheless, preferably, these pins will be formed of a crown sector equal to a graduation of the dial and defining two bearing surfaces of radial orientation opposite the axis of the coding discs 120.

Le disque de codage 120A, le plus avant, comporte sur sa face avant deux pions 121A, 122A adaptés pour pénétrer dans les trous 77 et 78 de l'organe rotatif de décodage 70, en étant susceptibles de coulissement axial dans ce dernier.The frontmost coding disc 120A has on its front face two pins 121A, 122A adapted to penetrate into the holes 77 and 78 of the rotary decoding member 70, being capable of axial sliding in the latter.

La longueur des pions 121A et 122A et la longueur des trous borgnes 77, 78 est adaptée de telle sorte que ces éléments coopèrent constamment lors d'un déplacement axial du disque de codage 120A, sur une course légèrement supérieure à l'épaisseur des couronnes de codage 100. En d'autres termes, les pions 121A et 122A ainsi que les trous borgnes 77 et 78 sont adaptés pour définir une coopération entre ces éléments, quelle que soit la position axiale du disque de codage 120A, en engagement avec une couronne de codage 100 associée, pour assurer le décodage par alignement des encoches 101, ou encore en position débrayée par rapport à la couronne 100 pour autoriser le changement de combinaison.The length of the pins 121A and 122A and the length of the blind holes 77, 78 is adapted so that these elements cooperate constantly during an axial displacement of the coding disc 120A, over a stroke slightly greater than the thickness of the crowns of coding 100. In other words, the pins 121A and 122A as well as the blind holes 77 and 78 are adapted to define a cooperation between these elements, whatever the axial position of the coding disc 120A, in engagement with a crown of associated coding 100, for decoding by aligning the notches 101, or even in the disengaged position relative to the crown 100 to authorize the change of combination.

Le disque 120A le plus avant comporte par ailleurs en face arrière un pion 125 adapté pour entraîner le disque médian 120B par contact de part ou d'autre d'un pion 121 B ménagé sur la face avant de ce dernier. De façon similaire, le disque médian 120B comporte sur sa face arrière un pion 125B capable d'entraîner en rotation le disque arrière 120C par contact de part ou d'autre d'un pion 121C prévu sur la face avant du disque 120C.The frontmost disc 120A furthermore comprises on the rear face a pin 125 adapted to drive the middle disc 120B by contact on either side of a pin 121 B formed on the front face of the latter. Similarly, the median disc 120B has on its rear face a pin 125B capable of rotating the rear disc 120C by contact on either side of a pin 121C provided on the front face of the disc 120C.

On remarquera que le disque 120C ne comporte qu'un seul pion 121 C sur sa face avant.It will be noted that the disc 120C has only one pin 121 C on its front face.

De préférence, les pions 122A et 125A d'une part sont alignés et les pions 121 B et 125B d'autre part sont alignés.Preferably, the pins 122A and 125A on the one hand are aligned and the pins 121 B and 125B on the other hand are aligned.

Le cadran gradué 300 destiné à coopérer avec l'organe rotatif de décodage 70 comporte deux pions 302, 303 destinés à pénétrer respectivement dans les trous borgnes 74 et 75.The graduated dial 300 intended to cooperate with the rotary decoding member 70 comprises two pins 302, 303 intended to penetrate respectively into the blind holes 74 and 75.

La position des pions 302, 303 sur le cadran 300 est bien entendu complémentaire de la position des trous 74 et 75 sur l'organe rotatif de décodage 70.The position of the pins 302, 303 on the dial 300 is of course complementary to the position of the holes 74 and 75 on the rotary decoding member 70.

De façon avantageuse, l'un des pions 302, est centré et sert de guide, en pénétrant dans le trou borgne 4, tandis que l'autre pion 303, excentré, de plus faible longueur, sert d'entraîneur en pénétrant dans l'orifice 75.Advantageously, one of the pins 302 is centered and serves as a guide, by penetrating into the blind hole 4, while the other pin 303, eccentric, of shorter length, serves as a coach by penetrating into the orifice 75.

Le cadran 300 peut être amovible.The dial 300 can be removable.

Cependant, en variante, tel que cela est illustré sur les figures, le pion central 302 peut être formé d'une vis engagée dans le cadran 300 et adaptée pour être engagée dans l'alésage borgne 74, alors taraudé, afin de permettre la fixation du cadran 300 sur la serrure.However, as a variant, as illustrated in the figures, the central pin 302 can be formed by a screw engaged in the dial 300 and adapted to be engaged in the blind bore 74, then tapped, in order to allow fixing. dial 300 on the lock.

La pénétration du cadran 300 dans la serrure est limitée par une collerette annulaire 304.The penetration of the dial 300 into the lock is limited by an annular collar 304.

Les intercalaires 140 sont immobilisés en rotation sur la broche 280 à l'aide de tout moyen classique approprié, tel que par exemple par sertissage.The spacers 140 are immobilized in rotation on the spindle 280 using any suitable conventional means, such as for example by crimping.

Un ressort hélicoïdal 80 est inséré entre l'organe rotatif de décodage 70 et la broche 280 équipé des intercalaires 140 et disques de codage 120.A helical spring 80 is inserted between the rotary decoding member 70 and the spindle 280 fitted with dividers 140 and coding discs 120.

Le ressort 80 prend appui d'une part sur la face arrière 72 de l'organe rotatif de décodage 70 et d'autre part sur la face avant de l'intercalaire 140A, de façon à pousser l'organe rotatif de décodage 70 vers l'avant de la serrure et l'ensemble - broche 280, intercalaires 140 et disques de codage - vers l'arrière.The spring 80 bears on the one hand on the rear face 72 of the rotary decoding member 70 and on the other hand on the front face of the interlayer 140A, so as to push the rotary decoding member 70 towards the 'front of the lock and the assembly - spindle 280, dividers 140 and coding discs - towards the rear.

Le pêne 200 selon l'illustration des figures annexées est forcé d'une plaquette oblongue comprenant à une extrémité, dans son épaisseur, une ouverture 201 complémentaire de la section transversale du prolongement 43 et polygonale selon l'illustration.The bolt 200 according to the illustration of the appended figures is forced by an oblong plate comprising at one end, in its thickness, an opening 201 complementary to the cross section of the extension 43 and polygonal according to the illustration.

Le pêne 200 comprend en outre un alésage traversant 202 destiné à venir en regard de l'alésage 176 du limiteur 170 et de l'alésage 53 du rotor 40 afin d'autoriser l'insertion de l'aiguille 251 dans la serrure, pour immobiliser en rotation les couronnes de codage 100.The bolt 200 further comprises a through bore 202 intended to come opposite the bore 176 of the limiter 170 and the bore 53 of the rotor 40 in order to authorize the insertion of the needle 251 in the lock, to immobilize in rotation the coding rings 100.

On va maintenant décrire la structure d'un outil de changement de combinaison 250 illustré schématiquement sur la droite des figures.We will now describe the structure of a combination change tool 250 illustrated schematically on the right of the figures.

Cet outil de changement de combinaison 250 comprend en combinaison une aiguille 251 et un insert 260 qui ont été représentés séparés sur la figure 2, pour illustrer clairement la structure de chacun de ces deux éléments.This combination change tool 250 comprises in combination a needle 251 and an insert 260 which have been shown separated in FIG. 2, to clearly illustrate the structure of each of these two elements.

Selon le mode de réalisation représenté sur les figures, l'insert 260 est composé d'un manche cylindrique de préhension 261 prolongé vers l'avant par une tige coaxiale 262, filetée à son extrémité avant référencée 263 et munie en arrière du filetage 263 d'une collerette annulaire 264.According to the embodiment shown in the figures, the insert 260 is composed of a cylindrical grip handle 261 extended forward by a coaxial rod 262, threaded at its front end referenced 263 and provided behind the thread 263 d '' an annular collar 264.

L'aiguille 251 comprend un brin rectiligne rigide 252 enroulé à son extrémité arrière, tel qu'illustré en 253, sur la tige 262 de l'insert 260.The needle 251 comprises a rigid rectilinear strand 252 wound at its rear end, as illustrated at 253, on the rod 262 of the insert 260.

L'enroulement 253 de l'aiguille 251 sur la tige 262 est adapté pour autoriser une rotation relative entre l'aiguille 251 et t'insert 260.The winding 253 of the needle 251 on the rod 262 is adapted to allow relative rotation between the needle 251 and the insert 260.

L'extrémité avant filetée 263 de la tige 262 est adaptée pour venir en prise avec l'alésage taraudé 50 du rotor 40, afin de repousser vers l'avant la broche 280 portant les intercalaires 140 et les disques de codage 120, afin d'assurer le débrayage des disques de codage 120 et des couronnes de codage 100, selon une disposition qui sera décrite plus en détail par la suite.The threaded front end 263 of the rod 262 is adapted to engage the threaded bore 50 of the rotor 40, in order to push forward the spindle 280 carrying the inserts 140 and the coding discs 120, in order to disengage the coding discs 120 and the coding rings 100, according to an arrangement which will be described in more detail below.

Selon d'autres développements de l'invention, les épaisseurs des couronnes intercalaires 180 et des sections 142 des intercalaires 140 sont égales entre elles, tandis que les épaisseurs des couronnes 100 et disques 120 de codage sont égales entre elles.According to other developments of the invention, the thicknesses of the insert rings 180 and of the sections 142 of the insert sheets 140 are equal to each other, while the thicknesses of the crowns 100 and coding discs 120 are equal to each other.

Par ailleurs, les épaisseurs des intercalaires 180 et 142 sont supérieures à celles des couronnes 100 et disques 120 et légèrement supérieures à la course de translation axiale autorisée de la broche 280 dans le rotor 40.Furthermore, the thicknesses of the inserts 180 and 142 are greater than those of the crowns 100 and discs 120 and slightly greater than the authorized axial translation travel of the spindle 280 in the rotor 40.

L'assemblage de la serrure à cylindre à combinaison sans clé conforme à la présente invention est le suivant.The assembly of the keyless combination cylinder lock according to the present invention is as follows.

Dans un premier temps, les trois disques de codage 120 et les trois intercalaires 140 sont disposés sur la plus faible section 281 de la broche de débrayage 280. Plus précisément, on enfile successivement le disque 120C, un intercalaire 140, le disque 120B, un second intercalaire 140, le disque 120A et enfin un troisième intercalaire 140 sur la section 281.Initially, the three coding discs 120 and the three spacers 140 are arranged on the smallest section 281 of the declutching spindle 280. More precisely, the disc 120C is successively threaded, an interlayer 140, the disc 120B, a second insert 140, the disc 120A and finally a third insert 140 on the section 281.

La broche 280, les disques de codage 120 et les intercalaires 140 constituent alors, lorsque les intercalaires 140 sont immobilisés, par exemple par sertissage ou vissage, un sous-ensemble autonome dont toutes les pièces sont solidaires en translation axiale mais dont seuls les disques de codage 120 sont libres en rotation.The spindle 280, the coding disks 120 and the inserts 140 then constitute, when the inserts 140 are immobilized, for example by crimping or screwing, an autonomous sub-assembly of which all the parts are integral in axial translation but of which only the disks of coding 120 are free to rotate.

En parallèle, trois couronnes de codage 100 et deux couronnes intercalaires 180 sont engagées dans le logement cylindrique 47 du rotor 40 et immobilisées axialement grâce au circlip intérieur 190.In parallel, three coding rings 100 and two intermediate rings 180 are engaged in the cylindrical housing 47 of the rotor 40 and immobilized axially thanks to the internal circlip 190.

Le rotor 40, les trois couronnes de codage 100, les deux couronnes intercalaires 180 et le circlip intérieur 190 constituent alors un sous-ensemble autonome dont toutes les pièces sont solidaires en translation axiale mais dont seules les couronnes de codage 100 sont libres en rotation, si l'aiguille 252 ne les immobilise pas. On rappelle que les intercalaires 180 sont immobilisés en rotation sur le rotor 40 grâce aux excroissances 181 pénétrant dans la fente 45.The rotor 40, the three coding rings 100, the two intermediate rings 180 and the inner circlip 190 then constitute an autonomous sub-assembly of which all the parts are integral in axial translation but of which only the coding crowns 100 are free to rotate, if the needle 252 does not immobilize them. It will be recalled that the spacers 180 are immobilized in rotation on the rotor 40 by virtue of the protuberances 181 penetrating into the slot 45.

La broche équipée des disques 120 et intercalaires 140 est introduite par l'avant dans le rotor 40.The spindle fitted with disks 120 and spacers 140 is introduced from the front into the rotor 40.

La section 282 pénètre dans l'alésage 49 et les disques de codage 120 s'engagent par les structures 126 dans la périphérie interne 102 des couronnes de codage 100.The section 282 enters the bore 49 and the coding disks 120 engage by the structures 126 in the internal periphery 102 of the coding rings 100.

L'organe rotatif de décodage est introduit par l'arrière dans le stator 10, puis le ressort hélicoîdal 80.The rotary decoding member is introduced from the rear into the stator 10, then the helical spring 80.

L'organe de blocage 90 est engagé dans la rainure 18 du stator 10.The blocking member 90 is engaged in the groove 18 of the stator 10.

Enfin, les encoches 101 des couronnes de codage 100 étant alignées, le rotor 40 équipé des couronnes de codage 100, des disques de codage 120 et de la broche 280 est engagé par l'arrière dans le stator 10 et immobilisé grâce au circlip interne 160 engagé dans la gorge 17.Finally, the notches 101 of the coding rings 100 being aligned, the rotor 40 fitted with coding rings 100, coding discs 120 and spindle 280 is engaged from the rear in the stator 10 and immobilized by the internal circlip 160 engaged in the throat 17.

Pour terminer, le limiteur de course 170 et le pêne 200 sont engagés grâce aux ouvertures 175 et 201 sur le prolongement 43 et immobilisés sur celui-ci grâce au circlip extérieur 220.Finally, the stroke limiter 170 and the bolt 200 are engaged thanks to the openings 175 and 201 on the extension 43 and immobilized thereon thanks to the external circlip 220.

La serrure est alors prête à l'utilisation.The lock is then ready for use.

Le fonctionnement général d'une telle serrure à combinaison sans clé, déjà décrit dans la demande de brevet Européenne 0 088 012 ne sera pas évoquée par la suite.The general operation of such a keyless combination lock, already described in European patent application 0 088 012, will not be discussed below.

On rappellera néanmoins que pour réaliser l'ouverture de la serrure, il faut que le rotor 40 tourne dans le stator 10. Il en est empêché initialement par l'organe de blocage 90 engagé dans la rainure 18 et dans la fente 46 et qui créé de ce fait une interférence entre le rotor 40 et le stator 10.It will nevertheless be recalled that in order to open the lock, the rotor 40 must rotate in the stator 10. It is initially prevented by the blocking member 90 engaged in the groove 18 and in the slot 46 and which creates therefore an interference between the rotor 40 and the stator 10.

Pour autoriser la rotation du rotor 40, il est nécessaire que l'organe de blocage 90 pénètre dans les encoches 101 des couronnes de codage 100 ainsi que dans les encoches 182 des intercalaires 180 de telle sorte que l'organe de blocage 90 sorte de la rainure longitudinale 18 prévue dans le stator 10.To allow rotation of the rotor 40, it is necessary for the locking member 90 to penetrate in the notches 101 of the coding rings 100 as well as in the notches 182 of the inserts 180 so that the locking member 90 comes out of the longitudinal groove 18 provided in the stator 10.

L'alignement des encoches 101 est opéré par rotation de l'organe rotatif de décodage 70, en contrôlant l'angle de rotation de celui-ci à l'aide des graduations 301 prévues sur le cadran 300 et de l'index ménagé sur la face avant 16 du stator 10.The alignment of the notches 101 is effected by rotation of the rotary decoding member 70, by controlling the angle of rotation of the latter using the graduations 301 provided on the dial 300 and the index formed on the front face 16 of stator 10.

Le processus de décodage par actionnement de l'organe rotatif 70, afin d'aligner les encoches 101 est bien connu en lui-même de l'homme de l'art et ne sera donc pas expliqué par la suite.The decoding process by actuation of the rotary member 70, in order to align the notches 101 is well known in itself to those skilled in the art and will therefore not be explained subsequently.

Le cas échéant, on se référera utilement au brevet Allemand 28 656 ou encore à la demande de brevet Française au nom de la Demanderesse publiée sous le n° 2 522 352 pour comprendre le processus de décodage.If necessary, we will usefully refer to the German patent 28 656 or even to the French patent application in the name of the Applicant published under the number 2 522 352 to understand the decoding process.

On va maintenant décrire le processus de changement de combinaison de la serrure conforme à la présente invention.We will now describe the process of changing the combination of the lock according to the present invention.

Le principe général de ce processus de débrayage réside dans la possibilité de translation axiale relative entre les disques de codage 120 et les couronnes de codage 100 permettant de modifier la position relative des encoches 101 et des pions d'entraînement 121, 125 pour chacun des éléments de codage formés en combinaison d'une couronne 100 et d'un disque 120.The general principle of this declutching process lies in the possibility of relative axial translation between the coding discs 120 and the coding rings 100 making it possible to modify the relative position of the notches 101 and of the drive pins 121, 125 for each of the elements. coding formed in combination of a crown 100 and a disc 120.

En d'autres termes, le changement automatique de combinaison est autorisé par la division de chaque élément de codage en une couronne 100 et en un disque 120 susceptible de pivotement relatif et portant l'un l'encoche 101 de passage de l'organe de blocage 90, l'autre des pions d'entraînement 121, 125.In other words, the automatic change of combination is authorized by the division of each coding element into a crown 100 and into a disc 120 capable of relative pivoting and one carrying the notch 101 for passage of the organ of blocking 90, the other of the drive pins 121, 125.

Pour opérer un changement de combinaison, il faut successivement:

  • 1) composer l'ancien code par commande de l'organe rotatif de décodage 70 afin d'aligner les diverses encoches 101 des couronnes 100 sur l'organe de blocage 90,
  • 2) introduire l'aiguille 251 dans les orifices 202, 176 et 53 pour bloquer en rotation les couronnes de codage et visser la tige filetée 263 dans l'alésage taraudé 50 afin de repousser vers l'avant la broche 280 équipée des disques de codage 120 pour débrayer ces derniers des couronnes de codage 100,
  • 3) composer le nouveau code par commande de l'organe rotatif de décodage 70 (on remarquera que malgré le déplacement axial induit par l'insert 260, les pions 121A et 122A du disque 120A coopèrent constamment avec l'organe 70) ; la composition du nouveau code induit un pivotement relatif entre les pions d'entraînement 121,125 des disques de codage et les encoches 101 des couronnes associées, les disques 120 étant débrayés des couronnes 100 et situés au niveau des intercalaires 180,
  • 4) la dernière opération consiste alors à dévisser la tige filetée 263 pour retirer l'insert 260 et l'aiguille 251.
To operate a combination change, you must successively:
  • 1) dial the old code by command of the rotary decoding member 70 in order to align the various notches 101 of the crowns 100 on the blocking member 90,
  • 2) introduce the needle 251 into the holes 202, 176 and 53 to block the coding crowns in rotation and screw the threaded rod 263 into the threaded bore 50 in order to push forward the spindle 280 fitted with the coding discs 120 to disengage the latter from the coding rings 100,
  • 3) dial the new code by command of the rotary decoding member 70 (it will be noted that despite the axial displacement induced by the insert 260, the pins 121A and 122A of the disc 120A constantly cooperate with the member 70); the composition of the new code induces a relative pivoting between the drive pins 121, 125 of the coding discs and the notches 101 of the associated crowns, the discs 120 being disengaged from the crowns 100 and situated at the level of the spacers 180,
  • 4) the last operation then consists in unscrewing the threaded rod 263 to remove the insert 260 and the needle 251.

La serrure est alors prête à l'utilisation, avec la nouvelle combinaison.The lock is then ready for use, with the new combination.

On remarquera que la structure de l'outil de changement de combinaison 250 précédemment décrite permet de maintenir l'aiguille 251 immobile en rotation pendant que l'insert 260 est tourné pour autoriser l'engagement de la tige filetée 263 dans l'alésage taraudé 50.Note that the structure of the combination change tool 250 described above keeps the needle 251 stationary in rotation while the insert 260 is rotated to allow engagement of the threaded rod 263 in the threaded bore 50 .

On remarquera que le ressort 80 intercalé entre l'organe rotatif de décodage 70 et la broche de débrayage 280 permet soit l'avancée de l'ensemble - broche 280 , disques 120 et intercalaires 140 - normalement sollicité vers l'arrière, pour permettre le changement de combinaison, soit l'enfoncement de l'organe rotatif de décodage 70, en fin de composition de code pour mettre en prise l'organe rotatif de décodage 70 et le rotor 40 (par l'intermédiaire des dentelures 71 et des pions 44) afin d'entraîner le rotor 40 et le pêne 200.It will be noted that the spring 80 interposed between the rotary decoding member 70 and the declutching spindle 280 allows either the advance of the assembly - spindle 280, discs 120 and spacers 140 - normally biased towards the rear, to allow the change of combination, ie the insertion of the rotary decoding member 70, at the end of code composition to engage the rotary decoding member 70 and the rotor 40 (via the serrations 71 and the pins 44 ) in order to drive the rotor 40 and the bolt 200.

On remarquera en parallèle, et c'est là une caractéristique importante, que, grâce à la structure représentée sur les figures précédemment décrites, il n'est jamais nécessaire d'ouvrir la serrure, c'est-à-dire d'entraîner le rotor 40 en rotation pendant le processus de changement de code.It will be noted in parallel, and this is an important characteristic, that, thanks to the structure shown in the figures previously described, it is never necessary to open the lock, that is to say to drive the rotor 40 in rotation during the code change process.

Bien entendu, la présente invention n'est aucunement limitée au mode de réalisation particulier qui vient d'être décrit.Of course, the present invention is in no way limited to the particular embodiment which has just been described.

A titre d'exemple, la structure qui à été précédemment décrite autorise un débrayage des disques 120 et couronnes 100 par translation axiale vers l'avant d'une broche 280 portant les disques, mais la structure représentée sur les figures sera aisément adaptée par l'homme de l'art pour permettre un débrayage fonctionnelemént équivalent des disques de codage par translation vers l'arrière.By way of example, the structure which has been previously described allows disengaging of the disks 120 and crowns 100 by axial translation towards the front of a spindle 280 carrying the disks, but the structure shown in the figures will be easily adapted by l '' skilled in the art to allow an equivalent functional disengagement of the coding discs by translation in the rear.

Selon l'illustration représentée sur les figures, l'organe rotatif de décodage 70 est sollicité en éloignement du rotor 40, par le ressort 80, en restant constamment en prise avec le disque de codage 120A. Il en résulte que l'organe rotatif de décodage 70 doit être déplacé axialement après composition de la combinaison pour mettre en prise l'organe rotatif de décodage 70 et le rotor 40 par compression du ressort 80.According to the illustration shown in the figures, the rotary decoding member 70 is urged away from the rotor 40, by the spring 80, while constantly being engaged with the coding disc 120A. As a result, the rotary decoding member 70 must be moved axially after composition of the combination to engage the rotary decoding member 70 and the rotor 40 by compression of the spring 80.

En variante, on peut envisager une structure dans laquelle l'organe rotatif de décodage 70 est sollicité continuellement en prise avec le rotor 40.As a variant, it is possible to envisage a structure in which the rotary decoding member 70 is continuously urged into engagement with the rotor 40.

Pour composer la combinaison, il est alors nécessaire d'écarter initialement organe rotatif de décodage 70 et rotor 40.To compose the combination, it is then necessary to initially separate the rotary decoding member 70 and rotor 40.

Selon une autre variante, l'organe rotatif de décodage 70 représenté sur les figures, qui coopère d'une part avec les disques de codage 120, d'autre part avec le rotor 40 peut être remplacé par deux éléments séparés coopérant respectivement avec les disques de codage 120 et le rotor 40. Bien entendu, dans un tel cas, l'élément coopérant avec le rotor 40 ne peut être entraîné en rotation qu'après composition de la combinaison, c'est-à-dire alignement des encoches 101 des couronnes de codage 100 et effacement de l'organe de blocage 90.According to another variant, the rotary decoding member 70 shown in the figures, which cooperates on the one hand with the coding disks 120, on the other hand with the rotor 40 can be replaced by two separate elements cooperating respectively with the disks coding 120 and the rotor 40. Of course, in such a case, the element cooperating with the rotor 40 can only be rotated after composition of the combination, that is to say alignment of the notches 101 of the coding rings 100 and erasure of the locking member 90.

Selon encore une autre variante de réalisation, la broche 280 représentée sur les figures et munie d'une lumière 283 peut être remplacée par une broche étagée 280 munie de deux trous transversaux traversants, destinés à recevoir la goupille 60. Le changement de code d'une telle serrure se fait alors selon les étapes consistant composer l'ancien code, introduire une aiguille dans le trou 53 du rotor, retirer la goupille 60, enfoncer la broche 280 pour débrayer les disques 120, replacer la goupille 60 dans le second trou de la broche pour immobiliser axialement les disques, composer le nouveau code, retirer la goupille 60 pour autoriser le recul de la broche 280, remettre la goupille 60 dans le trou initial et retirer l'aiquille immobilisant les couronnes de codage 100.According to yet another alternative embodiment, the pin 280 shown in the figures and provided with a light 283 can be replaced by a stepped pin 280 provided with two transverse through holes, intended to receive the pin 60. The change of code such a lock is then made according to the steps consisting of composing the old code, inserting a needle into the hole 53 of the rotor, removing the pin 60, pushing in the pin 280 to disengage the disks 120, replacing the pin 60 in the second hole of the spindle to immobilize the discs axially, compose the new code, remove the pin 60 to authorize the retraction of the spindle 280, put the pin 60 back in the initial hole and remove the pin immobilizing the coding crowns 100.

L'avantage de cette variante de réalisation est d'assurer l'immobilisation axiale de la broche 280 vers l'arrière,pour éviter tout débrayage intempestif, et, de façon similaire, d'assurer l'immobilisation axiale de la broche 280 en position débrayée lors de la composition du nouveau code.The advantage of this alternative embodiment is to ensure the axial immobilization of the spindle 280 towards the rear, to avoid any untimely disengagement, and, similarly, to ensure the axial immobilization of the spindle 280 in position disengaged when composing the new code.

De préférence, dans cette dernière variante, afin de faciliter le positionnement axial de la broche 280 dans le rotor 40, la broche 280 dépasse à l'utilisation à l'arrière du rotor 40 d'une longueur égale à sa course vers l'avant nécessaire pour assurer le débrayage des disques de codage 120.Preferably, in this latter variant, in order to facilitate the axial positioning of the spindle 280 in the rotor 40, the spindle 280 extends beyond the use at the rear of the rotor 40 by a length equal to its forward stroke necessary to disengage the coding discs 120.

Selon une autre variante de réalisation évoquée précedemment, la broche 280 peut être de section polygonale, engagée libre de translation mais immobilisée à la rotation dans un alésage semi-borgne complémentaire du rotor.According to another alternative embodiment mentioned above, the spindle 280 can be of polygonal section, engaged free in translation but immobilized for rotation in a semi-blind bore complementary to the rotor.

Selon une autre variante de réalisation, on peut envisager d'assurer le changement de code par la séquence d'opérations consistant à composer l'ancien code afin d'aligner les encoches 101 des couronnes de codage 100, entraîner le rotor 40 en rotation, immobiliser le pêne 200 dans une position angulaire précise, pour bloquer simultanément le rotor 40 et les couronnes de codage 100 par l'intermédiaire de l'organe de blocage 90, commander un déplacement axial de la broche 280 pour débrayer les disques de codage 120, composer le nouveau code par désengagement de l'organe rotatif de décodage 70 et du rotor 40 puis par commande des disques de codage 120, libérer la broche 280 qui recule pour engager à nouveau les disques de codage 120 et les couronnes de codage 100 associées.According to another alternative embodiment, it is possible to envisage ensuring the change of code by the sequence of operations consisting in composing the old code in order to align the notches 101 of the coding rings 100, driving the rotor 40 in rotation, immobilize the bolt 200 in a precise angular position, to simultaneously block the rotor 40 and the coding rings 100 by means of the blocking member 90, order an axial movement of the spindle 280 to disengage the coding discs 120, dial the new code by disengaging the rotary decoding member 70 and the rotor 40 then by controlling the coding discs 120, releasing the spindle 280 which moves back to engage the coding discs 120 and the associated coding rings 100 again.

On remarquera néanmoins que cette dernière variante exige la présence de deux index sur la face avant du stator 10, inclinés entre eux selon l'inclinaison relative du pêne entre sa position de fermeture et sa position retenue lors de la composition de la nouvelle combinaison.Note however that this latter variant requires the presence of two indexes on the front face of the stator 10, inclined between them according to the relative inclination of the bolt between its closed position and its position retained during the composition of the new combination.

Les ouvertures 175 et 201 ménagées dans le limiteur de course 170 et le pène 200 pourront être de géométrie différente de l'illustration, par exemple de section carrée et le cas échéant les alésages 176 et 202 pourront être supprimés, l'aiguille passant alors dans l'un des angles des ouvertures 175 et 201.The openings 175 and 201 formed in the stroke limiter 170 and the bolt 200 may be of different geometry from the illustration, for example of square section and if necessary the bores 176 and 202 may be removed, the needle then passing through one of the angles of openings 175 and 201.

Claims (21)

1. A cylinder lock of the type comprising a stator (10) which surrounds a rotor (40) associated with a latch (200) and at least one locking member (90) disposed between said rotor and said stator, said locking member being suitable for being displaced between a locking position in which it prevents rotation of said rotor relative to said stator, and a release position in which it allows such rotation, a plurality of coaxial coding elements (100, 120), each coding elements having a notch (101) in its periphery suitable for receiving said locking member (90) in its release position, and also having drive members (121, 125) suitable for rotating each of said coding elements when one of the coding elements immediately adjacent thereto is itself rotated ; and a rotary element-decoding member (70) suitable for rotating one of said elements and for enabling said notches (101) to be brought into alignment, characterised by the fact that:
- each coding element is constituted by the combination of an outer ring (100) having said notch (101) suitable for receiving said locking member (90) and a central disk (120) having said drive members (121, 125), the inside peripheral surface (102) of said rings and the outside peripheral surface (123) of said central disks (120) being suitable for enabling said disks and said rings to be mutually assembled in a multiplicity of predetermined relative angular positions ;
- spacers (140,180) are provided between said coding elements (100, 120), and said outer ring (100) and said central disk (120) of each coding element are capable of relative displacements in an axial direction ; and
- said lock additionally includes a declutching member (280) suitable for declutching said outer rings (100) and said central disks (120) of said coding elements by relative axial displacement thereof while said outer rings (100) are prevented from rotating by a retaining member (251), thereby in declutched position enabling said central disks (120) to be rotated relative to said outer rings (100) of each coding element by actuating said rotaty decoding member (70), and thus changing the combination of the lock.
2. A cylinder lock according to claim 1, characterised by the fact that it includes a passage (53) suitable for enabling a retaining member (251) to be inserted into said lock, said retaining member being suitable for engaging said outer ring (100) to prevent rotation thereof prior to declutching said central disks (120) and said outer rings (100).
3. A lock according to one of claims 1 or 2, characterised by the fact that the declutching member (280) comprises a rod suitable for axial displacement within said lock, said central disks (120) being provided with respective central bores (124), and wherein said disks are free to rotate relative to said rod (280) while being prevented from axial displacement relative thereto.
4. A lock according to claim 3, characterized by the fact that the relative axial positions of said central disks (120) and said rod (280) are fixed by spacers (140) engaging said rod (280) between said disks (120) in such a manner as to be caused to rotate with said rod (280).
5. A cylinder lock according to claim 4, characterised by the fact that the spacers (140) are in the shape of stepped rings, with portions (14) thereof of smaller cross-section being engaged in said central bores (124) through said central disks (120) and constituting rotaty bearings therefor, and with portions (142) thereof of greater cross section preventing relative axial displacement between said central disks and said rod (280).
6. A lock according to one of claims 3 to 5, characterised by the fact that the rod (280), said spacers (140), and said central disks (120) constitute a subassembly in which all the parts of the subassembly are prevented from relative axial displacement, and in which only said central disks (120) are free to rotate.
7. A cylinder lock according to one of claims 1 to 6, characterised by the fact that the rotor (40) defines a generally cylindrical housing (47) in which said outer rings (100) of said coding elements are engaged in such a manner as to be free to rotate while being prevented from relative axial displacement.
8. A cylinder lock according to claim 7, characterised by the fact that the passage (53) suitable for enabling an outer ring retaining member (251) to be inserted into said lock is provided through said rotor (40).
9. A cylinder lock according to claim 7 or 8, characterised by the fact that said outer rings (100) are prevented from relative axial displacement within said rotor (40) by means of spacers (180) disposed between adjacent outer rings (100) and constrained to rotate with said rotor (40).
10. A cylinder lock according to one of claims 1 to 9, characterised by the fact that said rotor (40), said outer rings (100) of said coding elements and said spacers (180) associated with said outer rings constitute a subassembly all the parts of which are constrained to move together in the axial direction and in which only said outer rings (100) of said coding elements are free to rotate.
11. A cylinder lock according to claims 3 and 9 taken into combination, characterised by the fact that the axial thicknesses of said spacers (140, 180) are greater than the axial thicknesses of said outer rings (100) and of said central disks (120) of said coding elements, and at least slightly greater than the stroke in axial translation of said rod (280) acting as a declutching member.
12. A cylinder lock according to one of claims 1 to 11 taken into combination with claim 3, characterised by the fact that said rod (280) has a transverse slot (283) for receiving a pin (60) engaged in said rotor (40), thereby preventing said rod (280) from rotating relative to said rotor and limiting its axial sliding stroke relative thereto.
13. A cylinder lock according to one of claims 1 to 11 taken into combination with claim 3, characterised by the fact that said rod (280) has two transverse bores each of which is suitable for receiving alternatively a removable pin (60) engaged in said rotor (40), thereby constraining said rod (280) to rotate with said rotor (40) and defining two axial positions of said rod relative to said rotor, said positions corresponding to said outer rings (100) and said central disks (120) of said coding elements being enclutched and being declutched, respectively.
14. A cylinder lock according to one of claims 1 to 11, characterised by the fact that the rod (280) of polygonal cross-section is free to move axially but is not free to rotate in a complementary half- blind hole provided in said rotor and co-operating with a screw engaged in said bore to displace said rod axially.
15. A cylinder lock according to one of claims 1 to 14, characterised by the fact that said rotary decoding member (70) is axially displaceable to rotate said rotor (40) and to open said lock when said notches (101) in said outer rings (100) are in alignment.
16. A cylinder lock according to claim 15, characterised by the fact that said rotary decoding member (70) is constituted by a cylinder (72) having sliding teeth (71) suitable for engaging said rotor (40) in order to rotate said rotor when said notches (101) are in alignment.
17. A cylinder lock according to one of claims 1 to 16, characterised by the fact that said rotary decoding member (70) is disposed on the front face of said stator (10) and prossesses structures (74, 75) suitable for cooperating in driving relationship with a dial (300), said dial including graduations in regard of a reference point of the stator (10).
18. A cylinder lock according to one of claims 1 to 17, characterised by the fact that said rotary decoding member (70) is provided with structures (77, 78) suitable for coming into driving engagement with the drive means (121, 125) of one of said central disks (120), regardless of the enclutched or declutched axial position of said central disk, thereby either enabling said lock to be decoded by bringing said notches into alignment, or else enabling its combination to be changed.
19. A cylinder lock according to one of claims 1 to 18, taken into combination with claim 2, characterised by the fact that a spring (80) is disposed between said rotary decoding member (70) and said rod (280) acting as declutching member to initially separate said rotary decoding member (70) and said rotor (40) in order to allow said coding elements to be driven without interfering with said rotor (40), while still allowing said rotor (40) to be driven by said rotary decoding member (70) after said spring (80) has been compressed.
20. A tool for changing the combination of a cylinder lock according to one of claims 1 to 19, characterised by the fact that it comprises a needle (251) suitable for entering into said lock to engage said outer rings (100) of said coding elements to prevent them from rotating, and an insert (260) bearing said needle and suitable for declutching said outer rings (100) and said central disks (120) by axial thrust.
21. A tool for changing the combination according to claim 20, characterised by the fact that said insert (260) is provided with an outer thread (263) suitable for engaging in a complementary threaded bore (50) in order to control the amplitude of relative axial displacement between said outer rings (100) and said central disks (120) during declutching.
EP86400244A 1985-02-08 1986-02-05 Keyless cylinder combination lock and tool for changing the combination Expired EP0192544B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8501804 1985-02-08
FR8501804A FR2577268B1 (en) 1985-02-08 1985-02-08 IMPROVED CYLINDER LOCK, KEYLESS COMBINATION, AND COMBINATION CHANGE TOOL

Publications (2)

Publication Number Publication Date
EP0192544A1 EP0192544A1 (en) 1986-08-27
EP0192544B1 true EP0192544B1 (en) 1988-08-31

Family

ID=9316080

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86400244A Expired EP0192544B1 (en) 1985-02-08 1986-02-05 Keyless cylinder combination lock and tool for changing the combination

Country Status (6)

Country Link
US (1) US4726204A (en)
EP (1) EP0192544B1 (en)
JP (1) JPS61242281A (en)
DE (1) DE3660634D1 (en)
ES (1) ES8701890A1 (en)
FR (1) FR2577268B1 (en)

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Also Published As

Publication number Publication date
FR2577268B1 (en) 1989-05-12
JPS61242281A (en) 1986-10-28
JPH0426389B2 (en) 1992-05-07
DE3660634D1 (en) 1988-10-06
EP0192544A1 (en) 1986-08-27
ES551724A0 (en) 1987-01-01
US4726204A (en) 1988-02-23
FR2577268A1 (en) 1986-08-14
ES8701890A1 (en) 1987-01-01

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