EP0620340A2 - Serrure cylindrique - Google Patents

Serrure cylindrique Download PDF

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Publication number
EP0620340A2
EP0620340A2 EP94104562A EP94104562A EP0620340A2 EP 0620340 A2 EP0620340 A2 EP 0620340A2 EP 94104562 A EP94104562 A EP 94104562A EP 94104562 A EP94104562 A EP 94104562A EP 0620340 A2 EP0620340 A2 EP 0620340A2
Authority
EP
European Patent Office
Prior art keywords
core
key
pin
lock cylinder
cylinder according
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
EP94104562A
Other languages
German (de)
English (en)
Other versions
EP0620340B1 (fr
EP0620340A3 (fr
Inventor
Siegfried Möllenkamp
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.)
JULIUS NIEDERDRENK KG
Original Assignee
JULIUS NIEDERDRENK KG
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 JULIUS NIEDERDRENK KG filed Critical JULIUS NIEDERDRENK KG
Publication of EP0620340A2 publication Critical patent/EP0620340A2/fr
Publication of EP0620340A3 publication Critical patent/EP0620340A3/fr
Application granted granted Critical
Publication of EP0620340B1 publication Critical patent/EP0620340B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
    • E05B27/0057—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with increased picking resistance
    • E05B27/0067—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with increased picking resistance whereby a small rotation without the correct key blocks further movement of a tumbler

Definitions

  • the invention relates to a lock cylinder with pin tumblers, with a cylinder housing in which a core with a circular cross section with a longitudinal profile or longitudinal rib profile in the key channel for a flat key or a longitudinal rib profile flat key is rotatably mounted with variable incisions provided on the narrow side, and with those extending transversely to the core axis Pin tumblers, which are each arranged in a row or in rows in levels that z. B.
  • a locking slide can be actuated, which controls at least one core pin locking the core against rotation.
  • a lock cylinder according to the preamble of claim 1 is previously known.
  • this document relates to a locking device consisting of a locking cylinder and associated flat key, in which the flat key in the area of its back zones opposite the narrow notch side has a guide cross-section that cannot be cut out even by the deepest closing notches and has a guide groove on one broad side, which is in addition to the The profile variation grooves / ribs arranged on both width sides are provided, and which guide section in its end area facing the roof-shaped key tip has a widening open towards the tip for retracting a nose on the key channel side, the flank lying on the key groove side of the widening lying covering the guide groove at its end facing the key tip in a first run-on slope runs out of the closing notch side of the tip, which opposes one at a greater distance from the tip t there is an inclined second run-on slope, the distance from the end of the widening of which is greater than the diameter or the thickness of the nose
  • the second bevel opens into the back flank of the flat key.
  • the locking device is also characterized in that the flank of the widening on the closing notch side forms a slideway closer to the back flank following the first run-up slope, which slides into the end section of the widening in parallel with the second run-up slope.
  • the supplementary tumbler is arranged in the open position with both front ends on the lock cylinder core joint and the distance of the nose from one end of the supplementary tumbler is equal to the height distance of the slideway from the lower flank of the end section.
  • the locking device is provided by a plurality of supplementary tumblers one behind the other in the direction of insertion with lugs lying in the open position at different distances from the back surface and a corrugation of the rear end section of the widening associated therewith.
  • the depth of the widening is smaller than that of the guide groove.
  • the control device consists of a control pin which is under the action of a compression spring which is stronger than the pin spring of the tumbler pin pair with which the control pin cooperates and that the control pin rests on the roof surface of the core pin when the key is not inserted.
  • the control pin should be mounted in a hole that penetrates the end of the cylinder core centrally in the direction of the longitudinal axis of the cylinder core. In a built-in double cylinder, two are against each other on the side resiliently supporting control bolts, each penetrating one of the cylinder core ends. In its locked position, the locking core pin only projects into the key channel with its rounded or conical end.
  • the invention has for its object to provide a lock cylinder, the security against unlocking, unlocking and scanning security is increased considerably.
  • "Unlocking security” means the degree of difficulty in non-destructively overcoming the locking elements of a locking cylinder with tools without knowledge of the associated key.
  • Locking security is the degree of difficulty in operating the locking cylinder with a key other than the associated key.
  • “Scanning security” is to be understood as the degree of difficulty in determining the locking coding of the tumblers of a locking cylinder from the locking cylinder using suitable aids without using a force and without a trace in order to produce a duplicate key according to the determined values (dimensions).
  • the key Because a protective body is arranged in the deepest part of the key channel in the area of the key tip, the key must be specially designed so that it can be inserted and fits into the key channel as far as it will go.
  • the position of the locking slide with respect to the protective body can be determined so that normally no locking tools can be pushed between the protective body and locking slide.
  • the previous break-in method can no longer be used, which consists in inserting a picking gun or other picking set into the key channel in order to push up the core pins and at the same time the core in Keep the circumferential direction under tension.
  • the spring forces that load the various, displaceably mounted core pins, the indexing pin and the locking slide are of different sizes. Impression technology, however, uses a material that reacts to pressure. Places are then worked away based on prints. If this were to be carried out with the lock according to the invention, the lock would lock immediately because imprints are simulated which must not be worked away.
  • a lock cylinder according to the invention is easy to manufacture.
  • the protective body is connected to the core. This connection can be made by inserting the pin-shaped or rod-shaped protective body into a bore in the core under prestress. Because the protective body is inserted through a bore orthogonal to the longitudinal axis of the core and passes through the key channel in the area of the key tip, there are particularly narrow spaces between the core pin, protective body and any indexing pin, so that locking tools can hardly be used to push back the locking slide.
  • An embodiment according to claim 3 is easy to manufacture.
  • the indexing pin is resilient and is pushed back into the open position by the back of the key.
  • the distance between the indexing pin and the protective body at the entry of the key tip can be kept particularly small, making manipulation with locking tools even more difficult.
  • An embodiment according to claim 8 is easy to manufacture in terms of production.
  • This embodiment is particularly suitable in cases where little material is available on the cylinder housing for mounting the indexing pin.
  • the solution proposed according to the invention also enables an inexpensive, compact design.
  • the spring force of the clamping spring can be dimensioned sufficiently large to be able to transmit a high pressure to the indexing pin.
  • the core pin is lifted over the slope and the locking slide so that it locks the core against the cylinder housing.
  • a further core pin lying in front of this core pin then rests with its longitudinal end face on the incline.
  • the locking position is precisely determined, since a defined locking position results in the foremost position of the locking slide by striking the flag against the protective body.
  • a lock according to the invention can normally no longer be opened with an associated key, as explained.
  • claims 21 to 24 ensure that the unlocking security, the locking security and the scanning security are increased considerably. In particular, it is then no longer possible for impressions to be made in accordance with the impression technique in order to form corresponding recesses on a blank and thereby produce a duplicate key. Since no system is recognizable for an outsider, the key features of the key blank cannot be prefabricated in order to adapt them to the lock setup. Rather, the internal arrangement and design of the lock components are completely unknown to an outsider. Without destroying the lock, opening is no longer possible without the right key.
  • Reference number 1 in the drawing denotes a cylinder housing in which a core 2 is rotatably mounted.
  • housing pins 3 are arranged longitudinally displaceably in parallel and at a distance from one another against the restoring force, in each case at least one spring element 4.
  • a core pin 5 is assigned to each of the housing pins 3.
  • Each of the core pins 5 is mounted in a bore 6 in the core so as to be longitudinally displaceable. All core pins have a circumferential bevel in order to enable them to be lifted by the key tip and to be immersed in the cutouts 7 of a flat key 8.
  • the flat key 8 can also be designed as a longitudinal rib profile flat key.
  • the reference number 9 denotes a key channel.
  • the key back is designated by the reference number 10.
  • the flat key 8 has an auxiliary slot 11 in its tip, the transverse dimensions of which are dimensioned such that the key with the two key tips 12 and 13 formed thereby encompasses a rod-shaped protective body 14 with little play on opposite sides .
  • the rod-shaped protective body 14 runs with its longitudinal axis orthogonal to the longitudinal axis of the flat key 8 and also orthogonal to the longitudinal axis of the core 2.
  • the rod-shaped protective body 14 is arranged with its end sections in a bore 15, the protective body 14 being held in the bore by pretensioning. With its central length section, it passes through the key channel 9.
  • an indexing pin 16 is arranged diametrically opposite and extends with its longitudinal axis orthogonal to the rod-shaped protective body 14.
  • This indexing pin 16 is fastened to a clamp spring 17 which engages around the cylinder housing 1 and (FIG. 15) is arranged in grooves 18.
  • the clamp spring 17 engages around the cylinder housing 1 under pretension.
  • the indexing pin 16 is mounted in a bore in the cylinder housing 1 against the restoring force of a compression spring 19.
  • the indexing pin 16 is tapered at its free end section facing the key channel 9 and ends with its tip at a short distance from the surface of the rod-shaped protective body 14. This distance must be dimensioned such that the flat key 8 with its key tip 12 penetrate this distance and can push the indexing pin 16 back to the parting plane between the cylinder housing 1 and the core 2.
  • the key tip 13 of the flat key 8 pushes the row of core pins 5 back to the separation level, except for core pins which are closer to the area of the key tip when these no longer protrude into the key channel 9 and which are described below.
  • a locking slide 21 is longitudinally displaceable, ie in the direction of the key longitudinal axis, against the restoring force of a spring element 22.
  • the spring element 22 is supported against an axially adjustable abutment 23, which in the illustrated embodiments is designed as a screw plug that can be screwed into a threaded bore 24.
  • FIGS. 1, 2, 5, 13 and 14 each have a blind bore 26 in which the spring element 22 is guided and supported.
  • a shoulder or shoulder 27 is connected in one piece to the control nose 28, which is directed to the side of the cylinder housing 1 on which the key spine is located 10 is located.
  • a control lug 28 which has a run-on slope 29 is integrally connected to the locking slide in all embodiments.
  • the run-up slope 29 merges into a plane-parallel surface 30 with which the locking slide 21 rests on the recess guide 20.
  • the surface 30 runs plane-parallel to the support and guide surfaces 31, 32.
  • the guide surface is formed by the lateral surface 33 of a bore.
  • the control lug 28 is controlled by the end face of the flat key 8 starting from the key tip 13 and pushed back against the restoring force of the spring element 22.
  • FIG. 3 shows the starting position in which there is still no suitable flat key 8 in the key channel 9. If a suitable flat key 8 is now inserted into the key channel 9, then the core pins are pushed back one after the other against the restoring force of the springs assigned to them to the parting plane, since they can fall into the key cutouts 7 that match them.
  • the penultimate core pins shown in FIGS. 1, 3, 4, 5, 6 and 8, which are provided with an annular shoulder fall into the associated key incisions 7, while the pin which is furthest away from the key stop on the plane-parallel surface 30 of the Locking slide 21 slides up to the inclined support and guide surface (FIG. 4) 29 to surface 42, in which it also releases the separation between cylinder housing 1 and core 2.
  • a pin 34 which is fixedly arranged in the cylinder housing 1 is arranged behind the core pin 5 which is the most distant from the key stop.
  • This pin 34 has an end portion 35 in a longitudinal groove 36 of the locking slide 21, which locks when the flat key 8 is removed by the side walls of the longitudinal groove 36 of the locking slide 21 and releases the end portion 35 when a suitable flat key 8 is inserted into the key channel 9.
  • the penultimate core pin 5 has an annular groove which is formed by an approximately centrally arranged recess and which is dimensioned such that the locking slide 21 with its control lug 28 engages in this ring groove (z. B. Fig. 1, 6, 8 and 13) blocking.
  • This condition arises when the lock has been tampered with with an inappropriate key or intrusion tools. After that, the lock can no longer be opened with a suitable key. If such a lock is to be made functional again without destruction occurring, the locking tools shown in FIGS. 10 and 11, which consist of a screwdriver-like handle and a part made of spring steel, are particularly necessary.
  • this includes a special auxiliary key 38, which has a longitudinal groove 39 on one side, through which the locking tool 37 with its resilient part can be inserted in the correct position (FIG. 8).
  • the locking tool 37 moves below the penultimate core pin 5 (FIG. 8) and bumps against the rod-shaped protective body 14, whereupon it is deflected because of its elasticity and then bumps against the locking slide 21 and the latter pushed back against the restoring force of the spring element 22.
  • the control lug 28 emerges from the annular groove of the penultimate core pin 5 and allows the auxiliary key 38 to be pushed in, so that this previously locked core pin 5 now bears against the reset via the key tip slope of the key tip 13 can be pushed up by force of the associated spring and then allows the adjustment of the auxiliary key 38 to the control lug 28 of the locking slide 21. Then the starting position shown in FIG. 3 is reached again, in which the lock can be operated again with a conventional, suitable flat key 8. Only the very small in its transverse dimensions, e.g. B. needle-shaped, resilient locking tool 37 is able to overcome the small transverse distance between the tip of the locked core pin 5 (Fig. 8) and the rod-shaped protective body 14.
  • a rigid element could not overcome the distance formed by the end face of the penultimate of the core pins 5 and the rod-shaped protective body 14.
  • dimension A measured from the longitudinal center line of said core pin 5, the center line running through the center of the rod-shaped protective body 14 is 3.5 mm. If you draw a line orthogonal to the longitudinal axis of this core pin 5, which just touches the tip of this core pin 5 and the center line which runs through the center of the rod-shaped protective body, the highest point (tip) of the penultimate core pin 5 can touch this line but also be set back from this line by a few tenths of a millimeter. The line is identified in the drawing by reference numeral 40. Characterized in that the rod-shaped protective body 14 is rounded in its outer surface, a deflection of the free, spring-elastic end of the locking tool 37 is facilitated.
  • the core pins 5 which are the most distant from the key stop cannot be opened according to the Hobbian opening method, because access to the free ends of these core pins 5 by the locking slide 21 is not possible. To do this, it would first be necessary to push the locking slide 21 back against the restoring force of the spring element 22. Should this nevertheless succeed, in such a way that the locking slide 21 is pushed all the way back until it stops, then these core pins 5 slide off the locking slide 21, so that the housing pins 3 block the core 2 relative to the cylinder housing 1.
  • the commercially available locking tools described in the introduction to the description cannot be used in a lock according to the invention in order to be able to unlock it without traces and destruction and without noise.
  • FIG. 4 A further embodiment of the invention can be seen from FIG.
  • a surface 42 is provided between the control lug 28 and the control surface or the bevels 29, on which the last of the core pins 5 rests with its tapered end surface when the locking slide 21 has been pushed back by the appropriate key against the restoring force of the spring .
  • the lock is unlocked (Fig. 4).
  • the cuts may vary. 18, these incisions have been indicated schematically with X1, X2, X3 and X4.
  • the length B of the surface 42 can also vary. This also applies to the shape.
  • the surface 42 can be designed to be concave, convex or in some other way, for example in a wave shape. It is also possible to arrange a rectilinearly delimited surface 42 not parallel to the core longitudinal axis 43, but at an acute angle to it.
  • Fig. 20 it can be seen that the control lug 28 can also engage in a recess 44 of the key.
  • the shape, dimension and distance of this recess 44 from the core longitudinal axis 43 can also be varied.
  • the thickness of the locking slide 21 has been designated D in FIG. 20. This dimension D must be smaller than the dimension H, measured from the tip of the penultimate of the core pins 5 to the transition of the conical part into the cylindrical part (Fig. 4).
  • Y1 to Y5 denote height variants depending on the incision variants X1 to Y5.

Landscapes

  • Lock And Its Accessories (AREA)
  • Eye Examination Apparatus (AREA)
  • Pens And Brushes (AREA)
  • Fluid-Damping Devices (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)
EP94104562A 1993-03-27 1994-03-23 Combinaison d'une clé plate et d'une serrure cylindrique Expired - Lifetime EP0620340B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4310107A DE4310107C1 (de) 1993-03-27 1993-03-27 Schließzylinder
DE4310107 1993-03-27

Publications (3)

Publication Number Publication Date
EP0620340A2 true EP0620340A2 (fr) 1994-10-19
EP0620340A3 EP0620340A3 (fr) 1995-04-05
EP0620340B1 EP0620340B1 (fr) 1997-05-14

Family

ID=6484098

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94104562A Expired - Lifetime EP0620340B1 (fr) 1993-03-27 1994-03-23 Combinaison d'une clé plate et d'une serrure cylindrique

Country Status (3)

Country Link
EP (1) EP0620340B1 (fr)
AT (1) ATE153099T1 (fr)
DE (1) DE4310107C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2423413A3 (fr) * 2010-08-30 2015-04-15 ABUS August Bremicker Söhne KG Serrure à cylindre

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19604594C1 (de) * 1996-02-08 1997-02-20 August Knapp Schliestechnik Gm Kombination eines Schließzylinders und eines Flachschlüssels für Waren- und Spielautomaten, Geldwechselautomaten, Fahrkartenautomaten und dergleichen, mit Stiftzuhaltungen
DE19919568A1 (de) * 1999-04-29 2000-11-02 Bremicker Soehne Kg A Schließsystem
GB2366595A (en) * 2002-01-11 2002-03-13 Yale Security Prod Uk Ltd Improved key and lock
IL180237A (en) * 2006-12-21 2015-10-29 Mul T Lock Technologies Ltd Pin Drum Download Scratches

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3656328A (en) * 1970-06-03 1972-04-18 Benjamin F Hughes Lock assembly
US3787812A (en) * 1971-10-20 1974-01-22 Waterbury Pressed Metal Co Pick-proof lock
FR2388966A1 (fr) * 1977-04-27 1978-11-24 Gruslin Philippe Perfectionnement aux serrures a barillet
US4161871A (en) * 1978-07-17 1979-07-24 Kurt Ziegler Locking mechanism
US4231242A (en) * 1978-10-23 1980-11-04 U-Change Lock Industries, Inc. Plug for a key operated lock
DE3225952A1 (de) * 1982-07-10 1984-01-12 Karrenberg, Wilhelm, 5620 Velbert Schliesszylinder-flachschluessel
AT380299B (de) * 1983-07-04 1986-05-12 Grundmann Gmbh Geb Zylinderschloss
DE3603687A1 (de) * 1986-02-06 1987-08-13 Dom Sicherheitstechnik Aus schliesszylinder und zugehoerigem flachschluessel bestehende schliesseinrichtung
DE3630524A1 (de) * 1986-09-08 1988-03-10 Sigismund Laskowski Schiebevorrichtung fuer eine abtastsicherungseinrichtung in einem schliesszylinder
US5148690A (en) * 1991-06-18 1992-09-22 Wang Ruei Fang Two-section type pickproof lock assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2423413A3 (fr) * 2010-08-30 2015-04-15 ABUS August Bremicker Söhne KG Serrure à cylindre

Also Published As

Publication number Publication date
ATE153099T1 (de) 1997-05-15
EP0620340B1 (fr) 1997-05-14
DE4310107C1 (de) 1994-08-18
EP0620340A3 (fr) 1995-04-05

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