EP0521006B1 - Zylinderschloss - Google Patents

Zylinderschloss Download PDF

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Publication number
EP0521006B1
EP0521006B1 EP91905097A EP91905097A EP0521006B1 EP 0521006 B1 EP0521006 B1 EP 0521006B1 EP 91905097 A EP91905097 A EP 91905097A EP 91905097 A EP91905097 A EP 91905097A EP 0521006 B1 EP0521006 B1 EP 0521006B1
Authority
EP
European Patent Office
Prior art keywords
plug
sleeve
housing
pin
cylinder lock
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 - Lifetime
Application number
EP91905097A
Other languages
English (en)
French (fr)
Other versions
EP0521006A1 (de
Inventor
Kai Pedersen
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.)
Trioving AS
Original Assignee
Trioving AS
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Filing date
Publication date
Application filed by Trioving AS filed Critical Trioving AS
Publication of EP0521006A1 publication Critical patent/EP0521006A1/de
Application granted granted Critical
Publication of EP0521006B1 publication Critical patent/EP0521006B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B27/00Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
    • E05B27/0003Details
    • E05B27/0007Rotors
    • E05B27/001Rotors having relatively movable parts, e.g. coaxial- or split-plugs

Definitions

  • This invention relates to an improvement of cylinder locks of the type which comprises a plug with a key channel, a housing surrounding the plug and an intermediate sleeve provided between the plug and the housing and adapted to be rotated about the same axis as the plug, as well as a number of through bores for locking pins being divided and adapted to be shifted in their longitudinal direction in the bores by means of a key inserted in the key channel.
  • the invention in particular is directed to providing a cylinder lock having substantially increased security against unauthorized tampering in attempts of non-permitted intrusion by opening a door being locked.
  • a particular form for tampering in this connection is a method involving the use of a key blank and successively by simultaneously applying a strong torque and bending of the key blank, for causing the various bottom or tumbler pins in the cylinder lock to emboss more or less weak markings on the key blank. Thereafter these markings can be used for filing down the blank and gradually approximating towards the correct key which makes it possible to open the lock.
  • impressioning In expert circles the method is referred to as "impressioning".
  • US patent 3.990.281 is of interest since it aims at the prevention of tampering by "impressioning", and in principle involves functions which to some extent are similar to the solution according to the present invention.
  • the invention provides a cylinder lock as previously detailed, in which each of the locking pins is divided into a bottom pin, a number of thin dividing pins, a code pin and an upper pin, for establishing a first shear surface between the plug and the sleeve and a second shear surface between the sleeve and the housing upon insertion of a correct key, the sleeve has a radial dimension being sufficiently large to accommodate the whole length of a code pin and a portion of an upper pin, the thin dividing pins are located between each code pin and an associated bottom pin, an additional bore for a separate auxiliary pin is provided in the housing and the sleeve, adapted to be engaged by surfaces on the plug so that the blocking effect of the auxiliary pin with respect to the sleeve in relation to the housing, is released when the plug is rotated through a given angle in relation to the sleeve, and drive means is adapted to transfer rotational movement of the plug beyond said given angle, into movement of a blocking member for
  • Figures 1 and 2 show the common components of the cylinder lock in the form of a plug 1, a housing 3 and a number of locking pins located in bores 11 - 17, whereby the assembled locking pin in bore 11 nearest to the opening of the key channel 2, is denoted 21.
  • each locking pin comprises several parts, including an upper pin 21A being under the influence of a compression spring 21C, and a tumbler or bottom pin 21B which has a somewhat pointed lower end adapted to be engaged by the various faces or bits on a key being inserted into the key channel 2.
  • a compression spring 21C a compression spring which has a somewhat pointed lower end adapted to be engaged by the various faces or bits on a key being inserted into the key channel 2.
  • a tumbler or bottom pin 21B which has a somewhat pointed lower end adapted to be engaged by the various faces or bits on a key being inserted into the key channel 2.
  • a hollow cylindrical intermediate sleeve 5 is arranged to be rotatable between the housing 3 and the plug 1. The mutual rotation between these three parts will of course depend upon the position of the locking pins in bores 11 - 17, all these penetrating from housing 3 through sleeve 5 and into plug 1.
  • auxiliary pin 20 consisting of an upper part 20A and a lower part 20B both of which in similarity to the other pin parts, are under the influence of a compression spring in its bore 19. Normally the auxiliary pin 20 (in the position shown in fig. 1) will block sleeve 5 against rotation in relation to housing 3.
  • auxiliary pin part 20B When, however, a key is used which releases plug 1 for rotation in relation to sleeve 5, a cut-away part 1B which is engaged by auxiliary pin part 20B will be displaced by rotation so that the end of pin part 20B upon rotation through a sufficient angle (see fig. 2) will engage the actual cylindrical periphery of plug 1. Since the length of the lower part 20B of auxiliary pin 20 is equal to the radial thickness of sleeve 5 this also leads to the release of sleeve 5 for rotation in relation to housing 3.
  • Such continued rotation of sleeve 5 by using a correct key is adapted to bring about the actual movements of the blocking member of the lock, for example a locking bolt.
  • An axial stud 9 at the end of sleeve 5 is provided for this purpose.
  • a drive mechanism 7 which transfers the torque from an inserted key through plug 1 to sleeve 5 when the above blocking by auxiliary pin 20 is removed. It is just this required angle of rotation between plug 1 and sleeve 5 for displacing auxiliary pin 20, which to a substantial degree eliminates the possibility of the particular form of tampering which was discussed at the beginning of this description.
  • each such locking pin 21 thus comprises a particular code pin 21D and a number of dividing pins 21E between the code pin and the bottom pin 21B.
  • the upper pin 21A normally has the same length in all bores 11 - 17
  • the bottom pin 21D advantageously can have one of two predetermined lengths, which in combination with individually selected lengths of the respective code pins, constitutes the total key code which can be implemented in each individual lock.
  • the cut-away face 1B which co-operates with auxiliary pin 20 is a plane surface, but it is obvious that this surface can be shaped in various manners in order to perform its cam-like function.
  • Fig. 2 further shows in a schematic way how a divided locking pin is raised by means of a key inserted in the key channel 2.
  • fig. 2 shows more in detail a device for releasable mutual fixation of plug 1 and sleeve 5 in a normal angular position or central position.
  • a projecting member in the form of a ball 25 lies in a bore 26 in plug 1 under the influence of a compression spring 27 and can be pressed out to engage a groove 28 in the surrounding sleeve 5.
  • this arrangement could be inverted, i.e. with ball 25 lying at the end of a bore in the sleeve for engaging a groove or a depression in plug surface 1A.
  • This positioning device serves to bring sleeve 5 back to its normal central position when the key is turned back after opening the lock.
  • a cylinder lock according to the principles of figs. 1 and 2 can be provided with internal steel rods or the like so as to make it difficult to break the lock by boring holes at different points, in particular in the area of the locking pins.
  • the embodiment in fig. 3 specifically aims at saving space and makes it possible to employ the improved design according to the invention, also in a type of lock of a certain standard which is available commercially.
  • the actual lock housing 33 here has a generally oval shape with a width which is not much larger than the diameter of the plug 31 of the lock.
  • the intermediate sleeve here has the shape of a hollow cylindrical sector 35 which may be considered cut out from a complete hollow cylinder as shown in figs. 1 and 2.
  • the sector-shaped sleeve 35 comprises the parts of such a sleeve which are essential to the function described. Even though locking pins and an auxiliary pin have not been indicated in fig. 3, these are provided in a manner fully corresponding to what is found in the embodiment of figs.
  • Housing 33 in fig. 3 has a cavity or chamber which covers an angular range between side walls 37A and 37B so that sleeve 35 can move within these limitations.
  • the blocking effect of the auxiliary pin between housing 33 and sleeve 35 is released upon a rather small angular displacement from the central position.
  • 31B there is indicated a form of incision in the cylinder surface 31A which in contrast to cam face 1B on the plug 1 in figs. 1 and 2, has a very short extension along the periphery, with an associated small operational angle as mentioned above.
  • This has a relationship to the reduced total rotational movement which is possible in the embodiment of fig. 3.
  • the plug 31 itself which carries the drive member for transferring rotation from an inserted key through plug 31 directly to a blocking member for the locking function, for example a locking bolt.
  • an additional pin is required, as shown in the enlarged cross-sectional view of fig. 4.
  • a pin 40 Radially through the intermediate sleeve 35 there is provided a bore 41 for a pin 40 which by means of a compression spring 42 is urged radially outwards against the inner cylindrical surface of the surrounding housing 33.
  • the inner end 40A of pin 40 engages a short peripheric groove 31C in plug surface 31A, so that this engagement makes the sleeve 35 rotate together with plug 31 when a correct key has been inserted and is turned.
  • Figs. 5, 6 and 7, however, show a further embodiment which represents an improvement in relation to the one in figs. 1 and 2 as far as security is concerned.
  • the improvement is related to a specific solution regarding the auxiliary pin and its function.
  • a plug 51 In figs. 5, 6 and 7 there is again a plug 51, an intermediate sleeve 55 and a housing 53 as well as other components found in the embodiment of figs. 1 and 2, including a number of locking pins 51A-F.
  • the embodiment of figs. 5, 6 and 7 has an auxiliary pin 60 lying in principle parallel to the axis of the plug. More particularly this auxiliary pin is located with the main portion of its length in a bore in the sleeve and normally projects with an end part 64 into a bore 53A in the surrounding housing 53.
  • a compression spring 61 serves to push auxiliary pin 60 into bore 53A.
  • recess 66 is approximately heart-shaped, having a crest or top point 66C and edge portions 66A and 66B tapering outwards from this point and extending in this example at angles symmetrically in relation to the longitudinal axis.
  • a tongue 66D projects in a direction towards top point 66C and has its end located at a distance from point 66C greater than the lateral dimension of stud 62.
  • this stud has a rest just in top point 66C, which in actual practice will be represented by a rounding between the tapered edges 66A and 66B.
  • Between these tapered edges and the tongue 66D there is all the way a sufficient space for stud 62 to be displaced while guided by these tapered edges outwards and inwards in relation to top point 66C.
  • auxiliary pin 60 may also be oriented in an opposite manner, i.e. with the end part 64 directed to the left in figs. 5 and 6, with corresponding inverting of the recess 66.
  • this embodiment has advantages with respect to centering of the plug for retraction of the key after use. Tapering edges 66A and 66B together with spring 61 will bring plug 51 to be centered by having stud 61 pressed towards top point 66C. A dual function is obtained thereby, namely this centering effect in addition to removal of the blocking between housing 53 and sleeve 55. Compared to the embodiment of figs. 1 and 2, where particular structural elements 25 - 28 serve for the centering, a simplification is then obtained here. The simplification also applies to the auxiliary pin itself, which in figs. 5 and 6 is made up by a single element. Moreover the latter embodiment has the advantage of reducing the total length of the lock arrangement.

Landscapes

  • Actuator (AREA)
  • Lock And Its Accessories (AREA)
  • Pens And Brushes (AREA)
  • Fluid-Damping Devices (AREA)
  • Eye Examination Apparatus (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Claims (10)

  1. Zylinderschloß, mit
    - einem Stopfen (1, 31) mit einem Schlüsselkanal (2, 32),
    - einem den Stopfen umgebenden Gehäuse (3, 33), und
    - einer Zwischenhülse (5, 35), die zwischen dem Stopfen (1, 31) und dem Gehäuse (3, 33) vorgesehen und um dieselbe Achse (10, 50) wie der Stopfen drehbar ist, sowie
    - einer Anzahl von Durchgangsbohrungen (11-17) für unterteilte Sperrstifte (21), die in ihrer Längsrichtung in den Bohrungen mit Hilfe eines in den Schlüsselkanal (2, 32) eingeführten Schlüssels verschiebbar sind,
    dadurch gekennzeichnet, daß
    - jeder der Sperrstifte in einen unteren Stift (21B), eine Anzahl dünner Unterteilungsstifte (21E), einen Kodierungsstift (21D) und einen oberen Stift (21A) unterteilt ist, um eine erste Scherfläche zwischen dem Stopfen (1, 31) und der Hülse (5, 35) und eine zweite Scherfläche zwischen der Hülse (5, 35) und dem Gehäuse (3, 33) nach Einführen eines richtigen Schlüssels zu errichten,
    - die Zwischenhülse (5, 35) eine ausreichend große radiale Dicke hat, um die gesamte Länge eines Kodierungsstiftes (21D) und eines Teiles eines oberen Stiftes (21A) aufzunehmen,
    - die dünnen Unterteilungsstifte (21E) zwischen jedem Kodierungsstift (21D) und dem zugeordneten unteren Stift (21D) angeordnet sind,
    - eine zusätzliche Bohrung (19) für einen gesonderten Hilfsstift (20) im Gehäuse (3, 33) vorgesehen ist und die Hülse (5, 35) von Oberflächen (1A, 1B, 31A, 31B) auf dem Stopfen (1, 31) ergreifbar ist, so daß der Blockierungseffekt des Hilfsstiftes im Hinblick auf die Hülse (5, 35) gegenüber dem Gehäuse (3, 33) aufgehoben wird, wenn der Stopfen (1, 31) um einen vorgegebenen Winkel bezüglich der Hülse verdreht wird, und
    - Antriebsmittel (7, 9) dafür ausgelegt sind, eine Drehung des Stopfens über den vorgegebenen Winkel hinaus auf eine Bewegung eines Blockierelementes in einem Schloß, beispielsweise eines Sperrbolzens, zu übertragen.
  2. Zylinderschloß nach Anspruch 1, dadurch gekennzeichnet, daß der Hilfsstift (20) axial einwärts der Sperrstifte (21), gesehen in Bezug auf die Öffnung des Schlüsselkanales, angeordnet ist.
  3. Zylinderschloß nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die genannten Oberflächen auf dem Stopfen (1) einen bevorzugt flach abgeschnittenen Teil (1B) von der benachbarten zylinderischen Oberfläche (1A) des Stopfens umfassen.
  4. Zylinderschloß nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß auf einem (1) der Teile Stopfen (1) und Hülse (5) ein federbetätigtes Vorsprungelement (25) und auf dem anderen (5) dieser Teile eine komplementäre Nut (28) zur lösbaren gegenseitigen Festlegung des Stopfens (1) und der Hülse (5) in einer normalen Winkelstellung vorgesehen ist.
  5. Zylinderschloß nach Anspruch 1, dadurch gekennzeichnet, daß der Hilfsstift (60) parallel zur Achse des Stopfens (51) liegt, wobei ein wesentlicher Teil seiner Länge in einer Bohrung der Hülse (55) liegt und ein Endteil (64) dafür ausgelegt ist, in eine Bohrung (53A) im Gehäuse (53) unter dem Einfluß einer Feder (61) einzutreten, und daß ein radial einwärts vorragender Ansatz (62) auf dem Hilfsstift (60) durch eine Nut (55B) in der Hülse (55) in eine steuernockenartige Ausnehmung (66) an der Oberfläche des Stopfens (51) tritt, um den genannten Blockierungseffekt durch eine Axialverschiebung des Hilfsstiftes (60) gegen die Federkraft aufzuheben, und zwar durch die genannte Verdrehung des Stopfens gegenüber der Hülse.
  6. Zylinderschloß nach Anspruch 5, dadurch gekennzeichnet, daß die steuernockenartige Ausnehmung (66) annähernd Herzform mit zwei sich verjüngenden Kanten (66A, 66B) hat, welche bezüglich der Axialrichtung von einer Spitze (66C) aus divergieren, in welcher der Ansatz (62) auf dem Hilfsstift (60) normalerweise seine Ruhestellung hat, und daß eine axial vorragende Zunge (66D) von der gegenüberliegenden Seite der Ausnehmung (66) in Richtung auf die Spitze (66C) mit einem Abstand zu dieser Spitze vorspringt, der etwas größer ist als die Querabmessung des Ansatzes (62).
  7. Zylinderschloß nach einem der Ansprüche 1-6, dadurch gekennzeichnet, daß die Zwischenhülse (5) Hohlzylinderform hat, im wesentlichen den Stopfen (1) einschließt und ihrerseits im wesentlichen vom Gehäuse (3) umgeben ist.
  8. Zylinderschloß nach Anspruch 7, dadurch gekennzeichnet, daß Antriebsmittel (7) eine Verdrehung der Hülse (5) zusammen mit dem Stopfen (1) bewirken, wenn letzterer über den vorgegebenen Winkel hinaus verdreht wird, und daß ein Element (9) der Hülse dafür ausgelegt ist, ein Blockierelement in einem Schloß zu bewegen, beispielsweise einen Sperrbolzen.
  9. Zylinderschloß nach einem der Ansprüche 1-4, dadurch gekennzeichnet, daß die Zwischenhülse (35) die Form eines Hohlzylindersektors mit einem Winkel hat, der im wesentlichen kleiner als 180° ist, und in einer sektorförmigen Kammer im Gehäuse (33) bewegbar ist, die eine Winkelerstreckung zwischen den Seitenwänden (37A, 37B) hat, welche geringfügig größer ist als der Winkel des Hohlzylindersektors ist, und daß ein Element des Stopfens (31) dafür ausgelegt ist, ein Blockierelement in einem Schloß zu bewegen, beispielsweise einen Sperrbolzen.
  10. Zylinderschloß nach Anspruch 9, dadurch gekennzeichnet, daß es zusätzlich einen radial bewegbaren Stift (40) aufweist, der in einer Bohrung (41) in der Hülse (35) vorgesehen ist und dafür ausgelegt ist, mit seinem inneren Ende (40A) in eine kurze Umfangsnut (31C) auf dem Stopfen (31) einzugreifen und unter Federbelastung mit seinem gegenüberliegenden Ende gegen die zylindrische Innenfläche des Gehäuses (33) gepreßt zu werden, und daß die zylindrische Oberfläche des Gehäuses an einer bestimmten Winkelposition eine Vertiefung (33A) für dieses gegenüberliegende Ende des Stiftes (40) hat, so daß ein Blockierungseffekt zwischen der Nut (31C) und dem genannten inneren Ende (40A) aufgehoben wird, um eine fortgesetzte Verdrehung des Stopfens (31) zum Öffnen des Schlosses zu ermöglichen.
EP91905097A 1990-03-12 1991-03-08 Zylinderschloss Expired - Lifetime EP0521006B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO901133 1990-03-12
NO901133A NO170435C (no) 1990-03-12 1990-03-12 Sylinderlaas
PCT/NO1991/000037 WO1991014064A1 (en) 1990-03-12 1991-03-08 Cylinder lock

Publications (2)

Publication Number Publication Date
EP0521006A1 EP0521006A1 (de) 1993-01-07
EP0521006B1 true EP0521006B1 (de) 1994-09-14

Family

ID=19892978

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91905097A Expired - Lifetime EP0521006B1 (de) 1990-03-12 1991-03-08 Zylinderschloss

Country Status (6)

Country Link
EP (1) EP0521006B1 (de)
AT (1) ATE111555T1 (de)
DE (1) DE69104035D1 (de)
DK (1) DK0521006T3 (de)
NO (1) NO170435C (de)
WO (1) WO1991014064A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1007787C2 (nl) * 1997-12-13 1999-06-15 Holland Agent Beheer B V Stiftcylindersluitwerk met meervoudige kern.
WO2005124067A1 (fr) * 2004-06-18 2005-12-29 Guozhong Chen Barillet de serrure incrochetable et antivol

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990281A (en) * 1974-08-16 1976-11-09 Meder Richard T Double cylinder pin tumbler lock
US4796447A (en) * 1987-07-09 1989-01-10 Jacob Rabinow Lock with key isolation using transfer tumblers

Also Published As

Publication number Publication date
DK0521006T3 (da) 1994-10-17
NO170435B (no) 1992-07-06
DE69104035D1 (de) 1994-10-20
NO901133L (no) 1991-09-13
ATE111555T1 (de) 1994-09-15
EP0521006A1 (de) 1993-01-07
NO170435C (no) 1992-10-14
NO901133D0 (no) 1990-03-12
WO1991014064A1 (en) 1991-09-19

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