EP0227505A1 - Sicherheitsschloss - Google Patents

Sicherheitsschloss Download PDF

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Publication number
EP0227505A1
EP0227505A1 EP86402449A EP86402449A EP0227505A1 EP 0227505 A1 EP0227505 A1 EP 0227505A1 EP 86402449 A EP86402449 A EP 86402449A EP 86402449 A EP86402449 A EP 86402449A EP 0227505 A1 EP0227505 A1 EP 0227505A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
key
bit
fingers
bars
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.)
Granted
Application number
EP86402449A
Other languages
English (en)
French (fr)
Other versions
EP0227505B1 (de
Inventor
Gérard Henri Denis Doinel
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.)
Fichet Bauche SA
Original Assignee
Fichet Bauche 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
Priority claimed from FR8516592A external-priority patent/FR2589925B1/fr
Priority claimed from FR8516593A external-priority patent/FR2589927B1/fr
Application filed by Fichet Bauche SA filed Critical Fichet Bauche SA
Priority to AT86402449T priority Critical patent/ATE38870T1/de
Publication of EP0227505A1 publication Critical patent/EP0227505A1/de
Application granted granted Critical
Publication of EP0227505B1 publication Critical patent/EP0227505B1/de
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B29/00—Cylinder locks and other locks with plate tumblers which are set by pushing the key in
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • E05B19/0017—Key profiles
    • E05B19/0035—Key profiles characterized by longitudinal bit variations
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
    • E05B27/0042—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with additional key identifying function, e.g. with use of additional key operated rotor-blocking elements, not of split pin tumbler type
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
    • E05B27/0078—Asymmetrical tumbler pins, e.g. with a key operating on a radial protrusion of a tumbler pin

Definitions

  • the present invention essentially relates to a safety device for a lock which makes it possible to considerably increase the number of codes allowing the locking or unlocking of the locks.
  • Safety devices comprising a cylinder mounted to rotate in a body containing a plurality of bars capable of sliding in a direction orthogonal to the axis of the cylinder, these bars each comprising a finger cooperating with a single groove formed on one and the other face of the key bit so that when this key is inserted into the cylinder, said bars can be actuated according to the shape of the groove to separate the cylinder from the body and, by action of the key, allow the cylinder to rotate in this body in order to control a locking and unlocking member.
  • the number of codes or combinations that can be provided is limited, this being due to the fact that one is limited at the level of the successive changes of direction of the single groove, if one wishes to ensure the introduction and proper functioning without seizing of the key inserted in the cylinder.
  • the changes in slope of the groove cannot exceed a certain angle between approximately 40 and 45 °, which limits obviously the number of combinations.
  • the different forms of groove that can be adopted are limited in number so as to allow actuation of the safety, which limits all the possible combinations.
  • the single groove posed problems of wear of the groove and of the fingers of the bars by the fact that all the fingers, at each insertion or withdrawal of the key, pass through the single cam path that forms the groove.
  • the present invention therefore aims to remedy the above drawbacks by proposing a safety device which includes simple and inexpensive improvements making it possible to significantly increase the number of possible combinations.
  • the invention relates to an improved safety device of the type defined above and essentially characterized in that, before the introduction of the key into the cylinder, the vertical offset of the fingers of a bar to the the other is such that the set of fingers between the two ends of the cylinder extends along at least approximately a line inclined in one direction or the other with respect to the axis of the cylinder, so that said fingers can cooperate with substantially as many grooves opening onto at least one of the edges of the key bit, as there are fingers to actuate, thereby in particular giving this device an increased multiplicity of combinations.
  • each groove during the introduction of the key, will control the actuation of a bar, and we can thus solving the problem of the insufficiency of combinations relating to the existence on the key of a single groove cooperating with all the fingers of the bars, as was the case in the prior devices.
  • the cylinder rotating in the body comprises at least one stop projecting towards the axis of this cylinder and cooperating with the edge of the key bit.
  • this stop takes the form of a part inclined relative to the axis of the cylinder and substantially parallel to the inclined line of the aforementioned fingers, which inclined part cooperates with a corresponding inclined part provided on the edge of the bit. the key.
  • the inclined part of the cylinder and of the edge of the key bit extends over approximately half the length of the cylinder and of the key.
  • the angle formed on the one hand between the horizontal and the inclined part of the cylinder, and on the other hand between the inclined part of the edge of the key bit and the remaining part of this edge is between approximately 130 and 170 °, and is preferably equal to 157 °.
  • This flange may comprise a part which is urged permanently into a hollow formed in the internal wall of the body, and it has holes capable of cooperating with lugs or the like secured to the bars.
  • the grooves on the faces of the key bit all open out at the inclined part provided on the edge of the bit.
  • a groove opens at a straight part and perpendicular to the longitudinal direction of the bit, while the other grooves open in the inclined part of the bit.
  • the aforementioned grooves all open at a straight part and perpendicular to the longitudinal direction of the bit.
  • a projecting part having a stop role can be provided at the connection of the bit to the key operating ring.
  • the invention also relates to a lock equipped with two identical security devices meeting the above-mentioned characteristics and mounted in alignment in the same block.
  • a safety device for a lock comprising a cylinder 1 rotatably mounted in a body 2 and containing a plurality of bars, flakes or the like 3a to 3e capable of sliding in the cylinder 1 in a direction orthogonal to its axis XX '.
  • the bars 3a to 3e each have ends E which can abut on the internal wall of the body 2, and this under the action of gravity, when the cylinder is at rest, that is to say before introduction of the key.
  • These bars are each provided with a finger or the like 4a to 4e projecting on one side of the bars in the direction of the axis XX '.
  • the cylinder 1 actually comprises two parallel rows of bars 3a to 3e whose fingers 4a to 4e face each other and which delimit between them a space forming groove 5 into which the bit can be introduced 6 of a key 7 shown in FIGS. 7 to 9.
  • bit 6 of the key 7 shown in FIGS. 7 to 9 has on its two faces grooves 8a to 8e which, during the introduction of the key, cooperate with the fingers 4a to 4e, so that the bars are actuated according to the shape of the grooves to separate the cylinder 1 from the body 2 and thus allow, by action of the key 7, the rotation of the cylinder in the body in order to control any drive system ensuring the locking and unlocking .
  • the fingers 4a, 4b, 4c, 4d and 4e respectively equipping the bars 3a, 3b, 3c, 3d and 3e extend along a line inclined with respect to the axis XX 'of the cylinder 1, when the said bars are at rest, that is to say before the introduction of the key 7.
  • This line of fingers which extends between the two ends of the cylinder 1 can be inclined in one direction or the other relative to the axis XX 'and it can be straight, broken or even slightly curved depending on the offset position of the fingers 4 from one bar to the other.
  • the line of fingers 4 must be such that said fingers can each cooperate with as many distinct grooves 8a to 8e provided on one and the other face of the bit 6 of the key 7.
  • the fingers 4a will penetrate into the grooves 8a
  • the fingers 4b will penetrate into the grooves 8b
  • the fingers 4c will penetrate into the grooves 8c etc ... Consequently, each groove 8a ... 8e of the bit 6 of the key 7 will control the actuation of a bar 3a ...
  • the cylinder comprises, along the axis XX ′, a stop marked generally at 9 and projecting towards said axis.
  • This stop 9 serves as a fulcrum for the edge of the bit 6 of the key 7 visible in FIGS. 7 and 8.
  • the stop 9 forms an inclined part 10 relative to the axis XX 'of the cylinder, this inclined part 10 being substantially parallel to the inclined line formed by the succession of fingers 4a to 4th.
  • This inclined part 10 cooperates with a corresponding inclined part 11 provided on the edge of the bit 6 of the key, as seen in Figures 7 and 8, and into which open the grooves 8a to 8e.
  • the inclined part 10 can be slightly curved, as seen in Figure 1, or it can be straight, as seen in Figure 10 or as shown by dotted lines 10a in Figure 10.
  • the stop 9 can have any suitable shape, without departing from the scope of the invention, as can the edge of the bit 6 of the key, which must obviously have a shape compatible with the stop 9.
  • the edge of the bit 6 has an inclined portion 11 at the level of which the grooves 8a, 8b, 8c and 8d open, and a part 22 which is straight and perpendicular to the longitudinal direction of the key, into which emerges a single groove, namely the 8th groove.
  • the grooves 8a to 8e on each face of the bit 6 all open out at the level of a straight part marked at 33 and which is perpendicular to the longitudinal axis of the key 7.
  • the edge bottom 34 of bit 6 is also straight, but parallel to the longitudinal axis of the key.
  • FIGS. 7 and 8 could perfectly, without departing from the scope of the invention, comprise only the inclined part 11, without the straight part 22, it being understood that the grooves 8a to 8e would all lead in this case to the level of said inclined part 11.
  • the inclined part 10 of the cylinder 1, as well as the inclined part 11 of the edge of the bit 6 visible in FIGS. 7 and 8, extend, according to a preferred example, over approximately and even a little more than half the length of cylinder 1 and bit 6 of key 7.
  • the angle formed between the horizontal and the inclined part 10 of the. cylinder 1, as well as the angle formed between the inclined part 11 of the edge of the bit 6 of the key and the remaining part 6a of this edge can be between approximately 130 and 170 °. In the example shown, this angle is equal to 157 °, but it can of course be different, without departing from the scope of the invention.
  • the grooves 8a to 8e are relatively short and have origins 23 offset in the longitudinal direction of the bit.
  • a chin bar constantly urged by springs 12 against the internal wall of the body 1. More precisely, the chin bar 21 has, in cross section, a projecting part 11a, forming for example a sharp angle, which cooperates with a corresponding hollow formed in the internal wall of the body 2.
  • the jib 21 which here in fact constitutes two units, has holes 13 which are capable of cooperating with lugs or the like 14 integral with the bars, 3a to 3e and provided on the face of the bars opposite to that carrying the fingers 4a to 4e.
  • the studs 21 serve to secure the cylinder 1 of the body 2, thanks to the cooperating parts lla and la.
  • this key can control the rotation of the cylinder 1 in the body 2, since the chucks 21 will be able to move radially thanks to the holes 13 which will come to cap the lugs 14. In other words, the projecting part lla of the chucks 21 will escape the hollow there in the internal wall of the body 2.
  • the inlet of the cylinder 1 is advantageously provided with two parts 15 acting as shielding and protecting the safety against any external action.
  • the two parts 15 are each urged permanently by a spring 16 against the internal wall of the body 2 and they can rotate with the cylinder 1 under the effect of the rotation of the key 7, as can be seen in FIG. 6.
  • a ball interposed between the cylinder 1 and the body 2 this ball being located at the entrance of the cylinder and capable of cooperating with a notch 18 provided on the edge of the key bit 7 so as to retain the key when 'it is in the depressed position in the cylinder 1 after the start of the rotation thereof as seen in Figure 6.
  • a drive piece 19 which can be any and is not within the scope of the present invention, this part may cause any locking and unlocking member.
  • notch 18 cooperates with the ball 17 housed between body 2 and cylinder 1, while the flange 35 serves as an end-of-travel stop for the key in the cylinder 1.
  • the key according to the invention has as many grooves 8 as there are fingers 4 and therefore bars 3 to be actuated, which makes it possible to give said key and the cylinder which receives it a multiplicity combinations resulting from the multiplicity of shapes that can be given to the grooves 8 which are numerous and relatively short.
  • each finger 4 engages in a groove 8 of the key and that we can provide for these grooves a multiplicity of shapes corresponding to as many combinations, it being understood that the arrangement of the fingers 4a to 4e must be such that it allows the introduction of said fingers in their respective grooves of the bit 6 of the key.
  • the cylinder 1 does not have the inclined part 10 visible in FIG. 10, since the key shown in FIG. 9 does not have an inclined edge 11 but quite simply a lower edge 34 which is horizontal and perpendicular to the straight edge 33 which in a way forms a finger attack edge 4.
  • a safety device has therefore been produced according to the invention which makes it possible to considerably increase the number of combinations thanks to a particular orientation of the succession of the fingers on the bars in the cylinder, so that the fingers can correspond to substantially as many grooves provided on both sides of the key, it being understood that it should also be noted that with the device according to the invention, the path of the fingers in the grooves of the key is minimized, which considerably reduces the friction times and wear.
  • a key groove can receive more than one finger, for example two fingers belonging to two adjacent bars.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Lock And Its Accessories (AREA)
EP19860402449 1985-11-08 1986-10-31 Sicherheitsschloss Expired EP0227505B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86402449T ATE38870T1 (de) 1985-11-08 1986-10-31 Sicherheitsschloss.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8516592A FR2589925B1 (fr) 1985-11-08 1985-11-08 Cle avec panneton a rainures multiples pour actionner un dispositif de surete a cylindre rotatif
FR8516592 1985-11-08
FR8516593 1985-11-08
FR8516593A FR2589927B1 (fr) 1985-11-08 1985-11-08 Dispositif perfectionne de surete pour serrure et serrure equipee de ce dispositif

Publications (2)

Publication Number Publication Date
EP0227505A1 true EP0227505A1 (de) 1987-07-01
EP0227505B1 EP0227505B1 (de) 1988-11-23

Family

ID=26224813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860402449 Expired EP0227505B1 (de) 1985-11-08 1986-10-31 Sicherheitsschloss

Country Status (3)

Country Link
EP (1) EP0227505B1 (de)
DE (1) DE3661277D1 (de)
PT (1) PT83706B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2266918B (en) * 1992-05-15 1996-03-20 Burton Stephen Arthur High security lock
WO2001014667A1 (de) * 1999-08-19 2001-03-01 EVVA-WERK SPEZIALERZEUGUNG VON ZYLINDER- UND SICHERHEITSSCHLÖSSERN GESELLSCHAFT m.b.H. & Co. KOMMANDITGESELLSCHAFT Zylinderschloss mit zylindergehäuse und darin verdrehbarem zylinderkern

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3264852A (en) * 1964-01-29 1966-08-09 A & R Wiedemar Cylinder lock
EP0008310A1 (de) * 1978-08-22 1980-03-05 R. Berchtold Ag Zylinderschloss mit Wende-Flachschlüssel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3264852A (en) * 1964-01-29 1966-08-09 A & R Wiedemar Cylinder lock
EP0008310A1 (de) * 1978-08-22 1980-03-05 R. Berchtold Ag Zylinderschloss mit Wende-Flachschlüssel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2266918B (en) * 1992-05-15 1996-03-20 Burton Stephen Arthur High security lock
WO2001014667A1 (de) * 1999-08-19 2001-03-01 EVVA-WERK SPEZIALERZEUGUNG VON ZYLINDER- UND SICHERHEITSSCHLÖSSERN GESELLSCHAFT m.b.H. & Co. KOMMANDITGESELLSCHAFT Zylinderschloss mit zylindergehäuse und darin verdrehbarem zylinderkern

Also Published As

Publication number Publication date
PT83706B (pt) 1993-01-29
PT83706A (fr) 1986-12-01
DE3661277D1 (en) 1988-12-29
EP0227505B1 (de) 1988-11-23

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