EP1528195A2 - Lock device - Google Patents

Abstract

The cylinder lock (2) has a rotatable cylindrical core (7) inside an outer casing (4). The lock accepts a flat key with a security pattern in one profiled broad side. The key slides into an aperture (11) in the end of the rotatable cylindrical core. Pins of different length in the rotatable cylinder have sharp ends (17) engaging the key. There are sloping sliding or engagement surfaces (18) on either side of the sharp ends.

Description

The invention relates to a closure device with a cylinder housing and a cylinder core mounted therein lock cylinder and with a in a key channel of the cylinder core retractable flat key, which either on at least one of its broadside or on one over the Broad-side high-rib a variety of arranged in a row Has wells that a predetermined by the locking system maximum depth can have in which wells the tip sections of core pins Two-part, spring-loaded tumbler pins in the cylinder housing.

A locking device of the type in question is known from DE 26 584 95 C2, in which the flat key shown there as a reversible key is designed. This has on its broadsides in rows in a row arranged recesses for arranging the tumbler pins. In accordance with regulations Arrangement of the two-part tumbler pins by means of the associated Flat keys are the joints between core pins and housing pins at the height of the fulcrum of the cylinder core, so that the closing rotation means the flat key can be made.

By the utility model DE 203 00 191 U1 is a mechanical Tool set for non-destructive opening of lock cylinders specified. The associated flat key is designed so that the closing recesses of go out a narrow side of the key shaft. Through this utility model an unlocking element is proposed comparable to the flat key, which unlocking element has recesses for each tumbler pin, which are deeper than the deepest cut value of the system. Will such a Unlock inserted into the keyway of the cylinder core, so lie the parting lines of all tumbler pins inside the cylinder core. It will now attached to the key handle a clamping tool and the cylinder core held under slight torsional prestress. Subsequently, on the unlocking element a stroke acting in the key channel longitudinal direction. This assumes that the unlocking a certain longitudinal displacement to carry out. To be consistent with the occurring bounce effect the housing pins separated from the core pins, so that by means of the clamping element as a result of the splitting effect the turning of the cylinder core vornehmbar is. This opening method is transferable to a generic closing device, but this can also be done without permission with the resulting disadvantages.

The object of the invention is based on the object, a generic Locking device designed so that the aforementioned opening method is not vornehmbar.

This task is initially and essentially with a locking device with the features of claim 1, wherein it is pointed out that the Tip section of at least one core pin a tip near, reduced cross-section Cylinder section has.

An associated flat key for a locking device according to claim 1 has on at least one broadside a variety of in a row arranged recesses and is characterized in that the other Broadside a Tiefrippe has to form the bottom of the maximum depth having deepening.

The objects of the further claims are described below in relation to the The subject matter of claims 1 or 2 explained, but can also in their independent Be meaningful.

According to such a configuration is a generic locking device created by increased safety value. Is it trying the wells to deepen beyond the maximum depth to the percussion technique mentioned above It can happen that some depressions of the Reason is missing and that through it open holes arise. This occurs For example, if the locking system is one of the key tip outgoing, requires the deep rib detecting smaller thickness. Will now be such flat key, which then serves as unlocking, in the key channel inserted, enters the or the corresponding core pins with his or their pointed, cross-section reduced cylinder sections in such openings or holes in it and thus catch the key. A Forward or backward displacement of the key, whether by train or by punch then not possible. The flat key is thus fixed in the key channel.

An attempted burglary in this way is thus prevented, resulting in losses protects, as they occur, for example, in a flat burglary. Preferably become the near-peak, cross-section reduced cylinder section containing core pins assigned to the key channel inner area, so that these specially designed core pins "in the shade" of the upstream core pins therefore, they should not be examined with regard to their design can. The advantage here is that the locking device largely the Proven construction can maintain what it also allows, the increased safety value largely without additional costs. An advantageous development is that the cylinder core at least one of the tumbler pins oppositely arranged additional pin has, the top in the release position in the tie rib associated cross-section of the Key channel protrudes and that the Tiefrippe from the key tip to this Additional pin is reduced or missing. The or the respective additional pins force a height reduction of the tie rib from the key tip ago. Will the height reduction or the absence of the deep rib up to this Additional pin not provided, can be the key or a corresponding do not insert the designed unlocking element. By the height reduction or the absence of the deep rib up to the corresponding area will over the deepest incision value of the system going beyond the ground taken so that there are openings. These serve then in addition, the inserted unlocking element by means of the specially designed core pins to catch, by means of or close to the point, cross-section reduced Cylinder sections. In their construction, these respective additional pins can be designed like the normal trained additional pens. You own opposite this only a greater length, which is the corresponding reduction of Tiefrippe in outgoing from the key tip area required. The height reduction or missing reduction can be different lengths which leads to further concealment of the locking system. The to Locking device belonging flat key has in one version two opposing broad sides forming key shank on. At least one broad side has a row-shaped elongated key shaft successive recesses for entry of the tip sections the core pins, which depressions given by the locking system maximum depth can have. The other broadside is provided with the Tiefrippe to Formation of the reason of the maximum depth having depression.

Compared with this design, the flat key is characterized that the tie rib at least opposite to the key insertion direction first depression is designed reduced or missing. As a result Any depressions exceeding the maximum depth take the form of passage openings for the specially designed core pins. It is possible the Tiefrippe one-level or multi-level decrease. An additional obfuscation in the With regard to the incision depth results from the measure, one of the deep rib provide opposite high rib, which in particular only one Part length of the key shank longitudinal extension optionally in different Height extends. It is thereby possible, the permutation of corresponding lengths of the key shaft at different levels. A Alternative solution is characterized in terms of the flat key in that the recesses remote broadside or high rib edge at least having a coaxial with their depression catch opening, wherein the to be classified the associated tumbler pin necessary depth of the recess is lower as the lowest possible incision value and the catch opening depth is chosen so that it penetrates the bottom of the recess deepened to the maximum depth. Its function as a catch opening receives this only when the opposite Deepening the deepest possible incision depth. Then penetrate Catch opening and deepened to the maximum depth deepening and create thereby the possibility that with the key insertion the cross-section reduced Cylinder section of the relevant core pin can enter and hereby catch the key. This inventive concept can be used in a Flat key, which with arranged on its broad side depressions the Classifies tumbler pins. Also, such a version can be chosen that the flat key from its narrow side outgoing recesses forms for corresponding tumbler pins. Parallel to these includes the lock cylinder further tumbler pins, whose core pins have recesses of the raised rib flank interact. If there in the area near the tip of the flat key a coaxial catch opening is provided, when deepening the opposite Deepening to the lowest possible incision value the penetration achieved, whereby the near-peak, cross-section reduced cylinder section core pin becomes effective and thus the non-permissible Flat key fixed in the cylinder core or keyway. The catch opening in question on the high-rib side, for example, by a cutout be made, which transverse to the broad side of the flat key by means of a Milling cutter is milled. However, it is also possible, the catch opening means a parallel to the broad side of the flat key working end mill to finished.

Fig. 1

eine aus Schließzylinder und Flachschlüssel bestehende Schließvorrichtung bei nicht eingestecktem Schlüssel,

Fig. 2

in vergrößerter Darstellung die Ansicht in Pfeilrichtung II in Fig. 1,

Fig. 3

eine Stirnansicht des Schlüssels, und zwar mit Blick auf die Schlüsselspitze,

Fig. 4

den Schnitt nach der Linie IV-IV in Fig. 3, mit angedeuteter Permutationsmöglichkeit,

Fig. 5

in vergrößerter Darstellung den Schließzylinder mit eingestecktem, vorschriftsmäßigem Schlüssel,

Fig. 6

in vergrößerter Einzeldarstellung einen nicht zum Einfangen eines Entsperrelementes dienenden, normal gestalteten Kernstift,

Fig. 7

die klappfigürliche Darstellung der Figur 6,

Fig. 8

den speziell gestalteten Kernstift, welcher mit dem spitzennahen, querschnittsreduzierten Zylinderabschnitt versehen ist,

Fig. 9

eine der Figur 5 vergleichbare Darstellung, jedoch mit in den Schlüsselkanal eingestecktem Entsperrelement,

Fig. 9a

eine Herausvergrößerung im Bereich IXa eines die Durchtrittsöffnung durchgreifenden Kernstiftes,

Fig. 10

einen gegenüber Figur 4 im Hinblick auf die Tiefrippe abweichend gestalteten Flachschlüssel,

Fig. 11

eine der Figur 10 vergleichbare Darstellung, jedoch mit an anderer Stelle liegender Stufe der Tiefrippe,

Fig.12-14

weitere Möglichkeiten der Flachschlüssel bei einer einstufig abgesetzten Tiefrippe und dieser gegenüberliegenden Hochrippe, wobei die möglichen Permutationen in zwei verschiedenen Ebenen liegen,

Fig. 15

in schematischer Längsschnittdarstellung einen zweistufig gestalteten Flachschlüssel, und zwar im Hinblick auf die Tiefrippe und die dieser gegenüberliegenden Hochrippe,

Fig. 16

in schematischer Längsschnittdarstellung einen Flachschlüssel mit durchgehender, also nicht stufenförmig abgesetzter Flachrippe mit zwei von der Flachrippe ausgehenden, zu den gegenüberliegenden Vertiefungen koaxialen Fangöffnungen, welche jedoch nicht von diesen durchdrungen werden,

Fig. 17

eine der Fig. 16 vergleichbare Darstellung, wobei die Vertiefungen bis zur Maximaltiefe vertieft sind und die beiden entsprechenden Vertiefungen die Fangöffnung durchdringen,

Fig. 18

eine abgewandelte Ausführungsform eines Schließzylinders in Ansicht mit steckendem Schlüssel,

Fig. 19

eine Unteransicht des strichpunktiert veranschaulichten Schließzylinders mit in vollen Linien dargestellten Zuhaltungsstiften,

Fig. 20

den Schnitt nach der Linie XX - XX in Fig. 18,

Fig. 21

in stark vergrößerter Darstellung die Herausvergrößerung gemäß XXI in Fig. 20,

Fig. 22

vergrößert dargestellt den Schnitt nach der Linie XXII - XXII in Fig. 18,

Fig. 23

ebenfalls vergrößert dargestellt den Schnitt nach der Linie XXIII - XXIII in Fig. 18,

Fig. 24

in perspektivischer Darstellung einen Ausschnitt eines zum Einordnen der außerhalb der Längsmittelebene des Schließzylinders vorgesehenen Kernstifte im Zusammenwirken mit dem Flachschlüssel,

Fig. 25

eine Ansicht des Schlüsselschaftes gegen die Breitseite im einschubseitigen Bereich des Schlüssels,

Fig. 26

eine der Fig. 25 vergleichbare Darstellung, wobei jedoch der Flachschlüssel zu einem Entsperrelement umfunktioniert ist,

Fig. 27

eine perspektivische Detaildarstellung mit in die Fangöffnung des flachschlüsselartigen Entsperrelementes mit seinem querschnittsreduzierten Zylinderabschnitt eingetretenem Kernstift und

Fig. 28

eine der Fig. 27 ähnliche Darstellung, wobei die Fangöffnung in um 90° versetzter Lage in die Hochrippenflanke eingeschnitten ist.

Hereinafter, several embodiments of the invention will be explained with reference to the drawings. It shows:

Fig. 1

a locking device consisting of a lock cylinder and a flat key when the key is not inserted,

Fig. 2

in an enlarged view, the view in the direction of arrow II in Fig. 1,

Fig. 3

an end view of the key, with a view of the key tip,

Fig. 4

the section along the line IV-IV in Fig. 3, with indicated Permutationsmöglichkeit,

Fig. 5

in an enlarged view the lock cylinder with inserted, regulatory key,

Fig. 6

in an enlarged detail representation of a not designed to capture a Entsperrelementes, normally designed core pin,

Fig. 7

the foldable representation of FIG. 6,

Fig. 8

the specially designed core pin, which is provided with the tip-near, cross-section reduced cylinder section,

Fig. 9

a representation comparable to FIG. 5, but with the unlocking element inserted into the keyway,

Fig. 9a

an enlargement in the area IXa of a core pin penetrating the passage opening,

Fig. 10

a flat key designed differently from FIG. 4 with respect to the deep rib,

Fig. 11

FIG. 10 is a view comparable to FIG. 10, but with the step of the deep rib located elsewhere;

Fig.12-14

further possibilities of the flat keys in a single-stage stepped deep rib and this opposite high-rib, wherein the possible permutations lie in two different levels,

Fig. 15

in a schematic longitudinal sectional view of a two-level flat key, with regard to the tie rib and this opposite high rib,

Fig. 16

in a schematic longitudinal sectional view of a flat key with a continuous, so not stepped stepped flat rib with two outgoing from the flat rib, coaxial with the opposite wells catching openings, which are not penetrated by these,

Fig. 17

16 shows a representation comparable to FIG. 16, the depressions being recessed to the maximum depth and the two corresponding depressions penetrating the catch opening, FIG.

Fig. 18

a modified embodiment of a lock cylinder in view with a stuck key,

Fig. 19

a bottom view of the lock-dotted illustrated lock cylinder with full-line tumbler pins,

Fig. 20

the section along the line XX - XX in Fig. 18,

Fig. 21

in a greatly enlarged view, the zoom out according to XXI in Fig. 20,

Fig. 22

shown enlarged the section along the line XXII - XXII in Fig. 18,

Fig. 23

also shown enlarged the section along the line XXIII - XXIII in Fig. 18,

Fig. 24

in a perspective view a section of a for arranging the provided outside the longitudinal center plane of the lock cylinder core pins in cooperation with the flat key,

Fig. 25

a view of the key shank against the broadside in the insertion-side area of the key,

Fig. 26

FIG. 25 is a view similar to FIG. 25, but with the flat key converted into an unlocking element, FIG.

Fig. 27

a detailed perspective view with in the catching opening of the flat key-like Entsperrelementes with his querschnittsreduzierten cylinder section occurred Kernstift and

Fig. 28

one of the Fig. 27 similar representation, wherein the catch opening is cut in offset by 90 ° position in the high-rib edge.

The illustrated in Figs. 1 to 18, denoted as a whole by the numeral 1 Locking device according to the first embodiment has a lock cylinder 2 and a flat key associated therewith 3. In the embodiment the lock cylinder 2 is formed as a half cylinder. It is, however possible to create it in the shape of a double cylinder. The lock cylinder 2 has a cross-sectional profiled cylinder housing 4, which consists of a circular cylindrical portion 4 'and a radially extending flange portion 4 "near its one end is the cylinder housing 4 equipped with a section 5 extending from the circular-cylindrical section 4, which for receiving a closing member 6 per se known structure serves. The latter is in driving connection with the inner end of a Cylinder core 7, which in a core bore 8 of the cylinder housing 4 rotatable is arranged. The aforementioned core bore 8 is in a circular cylindrical Section 4 'of the cylinder housing. An axial position assurance receives the Cylinder core 7 on the one hand by a lying within the cutout 5 Circlip 9. On the other hand, the cylinder core 7 forms a larger diameter Bund 10 at the key insertion end of the cylinder core. 7

In the horizontal longitudinal center plane of the cylinder core 7 includes a cross-sectional profiled Key channel 11, whose one narrow side to Kerndrehfuge F is open. Transversely to the keyway 11 form the cylinder core. 7 and the cylinder housing 4 each aligned core and housing bores 12, 13, which holes are in the lock cylinder longitudinal center plane extend. The core holes 12 open into the key channel 11. Im Cross-section, the holes 12, 13 designed drop-shaped in a known manner and serve to accommodate cross-section adjusted tumblers 14. Each Guard 14 is composed of a core pin 15 and a housing pin 16 together. In the holes 13 inset pin springs S load the housing pins 16 in the direction of the core pins 15. When not inserted in the key channel Key 3 support the tip portions 17 of the core pins 15 the opposite keyway broadside. The core pins 15 are in their length dimensioned so that then the housing pins 16 with a Submerge part of their length in the core holes 12 and thus a rotation lock represent for the cylinder core 7. This means that the dividing plane between the core pins 15 and the housing pins 16 within the cylinder core 7 lies. Each tip section 17 is formed by bilateral flattening of the core pin 15 in the top area. The flattenings are laid out so that they are Run-up slopes 18 form, with counter-bevels 19 of the flat key. 3 interact.

The flat key 3 is composed of a key handle 20 and the outgoing from this key shaft 21. Regarding the illustrated Flachschlüssels 3 is a reversible key that can be turned 180 ° in the keyway 11 can be inserted. The turning axis of the Key 3 is labeled A. From each broad side of the key shank 21 ever goes a Tiefrippe 22 and a high rib 23 each. The Tiefrippe 22 of the a broadside is a high rib 23 of the other broadside opposite. From the high rib 23 passes a plurality of recesses arranged in a row 24, which serve to arrange the core pins 15. The depressions 24 can have a maximum depth specified by the locking system, so that the Base 24 'runs within the tie rib 22. The high rib 23 is key tip side associated with a groove 25. Their bottom forms the counter-slope 19. In this way, a gate is formed, which the tip portions 17 of Kernstifte 15 have to wander through the key slot.

By illustrated in Figures 3 to 5 flat key 3 are in the insertion position thereof the tumbler pins 14 aligned so that then the rotational displacement of the cylinder core 7 is possible. This Flat key 3 indicates that the tine rib 22 from the key tip a portion of their length is reduced in height. This creates a step 26. The opposite of the reduced height portion of the tie rib 22 Core pins 15 (three as shown in FIGS. 3 and 5) are in their tip section 17 deviating designed. This is evident in particular from FIG. The top section 17 of the relevant core pin 15 has a tip near, reduced cross-section Cylinder section 17 'on. These close to the Beveled edges 17 ", which cooperate with the V-shaped recesses 24. In the case of the normally shaped core pins, the oblique edges extend 17 "up to the outermost Kernstiftenpitze, compare here in particular Fig. 6.

The flat key 3 illustrated in Fig. 4 shows the sipe image of the recesses 24, which depends on the constant in a plane high ridge 23 go out. In the area of the height-reduced tie rib 22 is the number of Permutation by one less than in the remaining longitudinal section of the key.

The one-step remote tipping rib 22 of the flat key 3 shown in FIG. 3 to 5 has row-shaped consecutive, approximately V-shaped depressions 27. These serve to cooperate with additional pins 28, 28 ', which the Coring pins 15 are opposite and arranged offset to this gap are. Each additional pin 28,28 'is composed of a shaft 29 and a head 30. In the longitudinal center plane of the lock cylinder 2 arranged stepped offset holes 31 are used in the direction of the keyway 11 stop-limited displacement of the additional pins 28, 28 '. When not plugged in Flat keys 3 only reach the truncated conical stepped Ends of the shafts 29 in the keyway 11 into it. Also the heads 30 of the Additional pins 28 are designed frustoconically tapered. They work together with a cross-section-adapted longitudinal groove 32 of the cylinder housing 4th As is apparent from Fig. 5, the reduced-height portion of the Tiefrippe 22 associated additional pins 28 'designed longer. The extension corresponds to the degree of height reduction. These additional pins 28 'lead to Increasing a security lock. If e.g. used a flat key, the does not form the depressions 27, so this can indeed be inserted. at a closing rotation of the cylinder core 7, the additional pins 28, 28 ', however do not dodge and thus provide in conjunction with the longitudinal groove 32 a Anti-rotation lock.

Is now trying unauthorized, from a flat key an unlocking as described in the aforementioned utility model DE 203 00 191 U1 is known, the result is a blocking element 34 according to FIG. 9. Due to the fact that all recesses 24 are now deeper beyond the maximum depth are cut in the area of height reduction located Wells no reason more. There are accordingly openings there 33, whose diameter is slightly larger than the cylinder portion 17 ' the relevant core pins 15. Will now be designed in this unlocking Inserted 34 in the keyway 11, so occurs in an insertion intermediate position the insertion side of the lock cylinder closer cylinder section 17 'in the corresponding passage opening 33, see. in particular the enlargement 9a. So it's obvious that this is a key designed unlocking 34 by the one the cylinder portion 17 'forming Core pin 15 is caught. The unlocking 34 can be neither uphole move back. It is therefore not possible by means of a bounce the Core pins 15 and housing pins 16 to separate. An attempted burglary on this The wise can not be done.

The modified designed key 3 of FIG. 10 and 11 correspond largely in its construction the key shown in Fig. 3 to 5. The high rib 23 has a constant height for all of these. Divergent are now the Levels 26 laid. This means that the associated lock cylinder according to FIG. 10 uses four appropriately designed core pins 15 as gripping pins while According to FIG. 11, the associated lock cylinder 2 has two catch core pins 15 got to. It is therefore possible to form the depth rib 22 with changing step 26.

The flat keys 3 shown in Figures 12, 13 and 14 also have a one-step remote tipping rib 22 with changing stages 26. Notwithstanding are now the high ribs 23 designed single-stage discontinued. The Height reduction of the same goes also from the key tip and extends over different lengths. The respective stages 35 are while at the same cross-sectional height to the steps 26 of the tufts 22. Auf In this way it is possible to have the incision depth region in two different Provide levels. Also in these versions occurs when making a appropriately designed unlocking on that in the area of the reduced height Section of the Tiefrippe holes arise when the incisions go beyond their maximum value.

The key 3 of Fig. 15 is a so-called. Two-stage flat key. Both the Tiefrippe 22 and the high rib 23 are sold in two stages. At the Tiefrippe 22 arise accordingly a step 26 and one of these upstream stage 26 '. On the same cross-sectional plane, the high-rib forms steps 35, 35 ', wherein the step 35 'is close to the key tip and at the height of the largest Supernatant of the high rib 23 is provided. There, the level 35 'connects between the largest and the middle projection of the high rib 23 over the relevant key broadside dar. Such a trained flat key has the permutations on three different longitudinal sections of the Key shaft, in each case in the same number. In the illustrated embodiment can, as indicated by lines, zero to seven Permutations provided in each longitudinal section of the key shank be.

The flat key 3 illustrated in FIG. 16 is substantially similar to that in FIG Fig. 4 illustrated flat key designed. Deviating possesses the flat key 3 as shown in FIG. 16 now a continuous Tiefrippe 22, without a Step through to the key tip. In the deep rib are frustoconical Countersinks 27 are provided, which with additional pins 28 of equal length interact. These depressions 27 are arranged offset to the Recesses 24 for the tumbler pins. Gap offset to these depressions 27 go from the wells 24 remote broadside, here so the Tiefrippe 22, two to a recess 24 coaxial catch openings 36. These correspond in their form to the depressions 27. The incision image of the possible Recesses 24 is shown in FIG. 16. The opposite the catch openings 36 Wells T can be chosen so deep that between the bottom 36 'and the relevant recess material remains. There, where no Catching openings 36 are provided, a maximum depth Tmax of the recesses 24 may be provided.

If an attempt is made to produce an unlocking element 34 from the flat key 3, all recesses 24 are brought to the maximum depth Tmax. This means that the catch openings 36 opposite recesses 24 penetrate the bottom 36 'and thereby form through holes, See Fig. 17. Will now such unlocking 34 in the keyway Inserted 11 of the cylinder core 7, so one or two offset the Cylinder portion 17 'forming core pins 15 in the catch openings 36th enter under catching the unlocking element 34. This can be neither uphole return displacement. The unlocking element 34 is thus caught, and the prescribed Classifying the tumbler pins is thus effectively prevented. The Closing rotation of the cylinder core 11 can not be made so.

The illustrated in FIGS. 18 to 24 lock cylinder 2 'is modified designed. This also applies to the flat key 3 '. He sits down from the key shank 21 and the handle 20. The the key back 37th opposite key breast 38 forms notch-like recesses 24 from Classifying a series of tumbler pins 14, which are in the longitudinal center plane of the lock cylinder 2 'extend. Also put these tumbler pins 14 are composed of core pins 15 and housing pins 16 and are pen springs 39 in the direction of one in the longitudinal center plane of the lock cylinder 2 'lying Key channel 11 of the cylinder core 7 charged. At insertion of the regulatory Flat key 3 ', the tumbler pins 14 are arranged so that their parting line is at the height of the fulcrum F of the cylinder core 7.

At its one broad side of the key shaft 21 has a towering High rib 59, which is the key back 37 adjacent. In detail points the high rib 59 two side by side in Schlüsseleinsteckrichtung Control tracks 40, 41, which formed from the underside of the raised rib 59 are. The task of the control tracks 40, 41 is outside the median longitudinal plane of the lock cylinder 2 'arranged tumbler pins 42 to relocate. Latter are parallel to the broad side plane of the key 3 'and thus also parallel to Longitudinal center plane of the lock cylinder 2 'is provided. In the embodiment three such tumbler pins 42 are arranged one behind the other lying. Everyone Tumbler 42 is composed of a non-rotatable core pin 43 and a rotatable housing pin 44 together. These are guided in cross-section adjusted Core / housing holes 45, 46. The one ends of the core holes 45 terminate close to the fulcrum F of the cylinder core 7, as for example from Fig. 21 shows. Due to this training, the use is relative long sized core pins 43 feasible. The tumbler pins are loaded 42 of pen springs 47. When not inserted in the keyway 11 Bowl 3 'are accordingly based on the upper ends of the core pins 43 on upper end of the core holes 45 from. This has the consequence that the joints T between the core pins 43 and the housing pins 44 within the cylinder core 7 and accordingly lead to a turnstile of the same.

From Fig. 19 shows in particular that the scanning of the high rib 59 Tumbler pins 42 have a drop cross-sectional shape whose drop tips lie on the longitudinal center plane x - x of the row of tumbler pins 42. Exclusively the co-operating with the control tracks 40, 41, the tips forming portions of the core pins 43 of the tumbler pins 42 are in cross section circular.

The central tumbler pins 14 are in Schlüsseleinsteckrichtung to gap the eccentric tumbler pins 42 offset and in particular overlapping arranged to these. It is thereby avoided that the Tumbler pins 14, 42 receiving holes penetrate each other.

As particularly shown in FIGS. 25, 26 and 27, each control track 40, 41 is each a run-on slope 40 ', 41' assigned. The control slope 41 'of the outer ribs Control track 41 is further spaced from the key tip. Furthermore, the rib outer control track 41 has an interruption point 48 on. This is designed in the form of a peripheral recess. Latter is longer in key insertion direction than the tumbler pin diameter. Flanked is the recess 48 of roof-shaped mutually inclined 48 ', 48 ". In the recess 48 opens a notch recess 49 of the inner Control track 40, see in particular Fig. 22.

To better distinguish the tumbler pins 42 with the letters a, b and c. The tip of the rib outer control track 41st scanning tumbler 42 a has one of the inner rib control track 40 associated recess 50. In detail, the top has a roof shape mutually standing control slopes, which are in a Steuerfirst 51st to meet. While the control slopes the axial displacement of the tumbler pin 42 a, fixed the Steuerfirst 51 in cooperation with the control track 41 shows the position of the tumbler pin 42a with the key inserted, See Figs. 20 and 21. Then, the parting line T between core pin 43 and Housing pin 44 at the height of the rotary joint F. The recess 50 of the tumbler pin 42 a is sized so that its movement is not obstructed. The Steuerfirst 51, in which the roof-shaped standing control slopes meet, cooperates with a recess 52 of the control track 41. The Recess 52 is aligned by means of a perpendicular to the key broadside Milling cutter incorporated and has, seen in plan, an arcuate Structure.

During the Steuerfirst 51 of the tumbler pin 42 a the outer control track 41 scans, the Steuerfirst 53 of the tumbler 42 b acts with the inner ribs Control track 40 together. The there in the Steuerfirst 53 converging control slopes work together with the recess 49. The Steuerfirst 53 is dominated by one of the rib outer control track 41 associated tip section 54. Regarding the same is a stepped cylindrical pin, which is close to the tip, cross-section reduced cylinder portion 54 forms. Missing, for example, the point of interruption 48 on the outer rib track 41, so missing the cylinder portion 54 'of the tumbler 42 b the alternative clearance. This tumbler pin 42 b is accordingly not properly arranged and locks therefore a rotational displacement of the cylinder core. 7

Concerning the tumbler pin 42 c is to be noted that he is in its construction the tumbler 42 a corresponds. Only the control track 41 has at the corresponding place also made by means of a finger milling cutter Deepening 55 of lesser depth.

Only the regulatory key 3 ', which both control tracks 40, 41 and the offset to each other lying ramps 40 ', 41' forms, can completely be inserted into the keyway 11. This goes with a controller all Zuhaltungsstifte 14, 42 accompanied, so that their joints T in the fulcrum F of the cylinder core 7 lie. During the insertion or withdrawal movement operate the assigned at the point of interruption 48 slopes 48 ', 48 "with the tips of the tumbler pins 42. Accordingly, the Lock cylinder 2 'after the key insertion by means of the key 3' getting closed. Keys that are not properly designed control tracks training, do not properly arrange the tumbler pins and accordingly cause a lock. Also the offset of the ramps 40 ', 41' to each other is necessary. If these are congruent, it will be fine the slot of the key is locked. Through the closer the key tip Run-up slope 40 'is in fact in cooperation with the facing Control slope of the tumbler 42 b a shift of the same, so that the lateral surface of the cylinder portion 54 'of the tumbler 42 b can not affect insertion.

To counteract the above-mentioned percussion method, has the the recesses 49, 52, 55 facing away from the high rib edge 59 'one to the recess 52 coaxial catch opening 56 on. This is also by means of a milling cutter incorporated, wherein the longitudinal axis of the end mill perpendicular to Broad side of the key shaft 21 is aligned. The to classify the associated tumbler 42 a necessary depth T is less than the lowest possible Cut value Tmax, see FIGS. 25 and 26. This leaves a thin wall between the recess 52 and the catch opening 56th Das Dimension D of the wall can be about 0.3 mm. The catch opening depth FT is chosen so that when making a maximum deep recesses 24 having Entsperrelementes 58 and the associated Cutting the recesses 49, 52, 55 to the maximum depth Tmax the catch opening 56 penetrates the bottom of the recess 52. This creates a result Through hole 57 having a diameter larger than that of the cylinder portion 54 'of the tumbler pin 42b. A made in this way Unlocking element 58, as illustrated in FIGS. 26 and 27, results in that when it is inserted into the keyway of the cylinder section 54 'of the spring-loaded tumbler 42b in the through hole 57 of the Catch opening 56 dips and thereby the unlocking 58 in the keyway 11 fixed, so that the blocking element 58 neither further advanced nor can be deducted.

Fig. 28 shows an alternative solution. The catch opening 56 'is now by means of a Fingerfräsers of the high-rib flank 59 'ago cut, which end mill aligned in this case parallel to the broad side of the key shank is. Also in this case, the soil penetrates the deepened to the maximum depth Recess 52, the catch opening 56 'and creates a through hole 57 for the cylinder portion 54 'of the tumbler 42 b. Thus it can be opened up Although this way create an unlocking 58, which, however, not in is able to close the lock cylinder 2 '.

All disclosed features are essential to the invention. In the revelation The application is hereby also the disclosure of the associated / attached Priority documents (copy of the advance notification) in full including, for the purpose, features of these documents in claims of the present application.

Claims (6)

Locking device with a cylinder (4) and a cylinder core (7) mounted therein lock cylinder (2, 2 ') and with a in a keyway (11) of the cylinder core (7) insertable flat key (3, 3'), which either on at least one broad side or on a high rib projecting beyond the broad side (59) has a multiplicity of recesses (24, 49, 52, 55) arranged in a row, which can have a maximum depth predetermined by the locking system, into which recesses (24, 49 , 52, 55) the tip sections (17) of core pins (15, 43) of two-part tumbler pins (14, 42) sprung in the cylinder housing (4), characterized in that the tip section (17, 54) of at least one core pin (15, 43) has a tip near, reduced cross-section cylinder portion (17 ', 54'). Flat key for a locking device according to claim 1 or in particular according thereto, wherein the key (3) has on at least one broad side a plurality of recesses (24) arranged in a row, characterized in that the other broad side has a deep rib (22) for forming the bottom (24 ') of a depression (24) having the maximum depth. Locking device according to Claim 1 or in particular according thereto, characterized in that the cylinder core (7) has at least one additional pin (28 ') arranged opposite the tumbler pins (14), the tip (29') of which is associated with the deep rib (22) in the release position Cross-section of the keyway (11) protrudes and that the Tiefrippe (22) from the key tip to this additional pin (28 ') is reduced or missing. Flat key for a closing device (1) according to one of claims 1 to 3, with a two opposing broad sides forming key shank (21), wherein at least one broadside in key shank longitudinal extension in rows successively recesses (24) for entry of the tip portions (17) the core pins (15) has, which depressions (24) may have a maximum depth predetermined by the locking system and the other broad side a Tiefrippe (22) for forming the bottom (24 ') of the maximum depth having recess (24), characterized in that the lower rib (22) is designed to be reduced in height or missing at least opposite the first recess (24) in the key insertion direction. Flat key according to Claim 4 or in particular according thereto, characterized by a high rib (23) lying opposite the tie rib (22) and extending in particular only over a partial length of the key shank longitudinal extension, if appropriate at different heights. Flat key for a lock cylinder according to one or more of the preceding claims or in particular according thereto, characterized in that the recesses (24, 49, 52, 55) facing away from wide side or high rib edge (59 ') at least one to a recess (24 or 52) coaxial catch opening (36 or 56), wherein the depth (T) necessary for arranging the associated tumbler pin is less than the lowest possible cut value (Tmax) and the catch opening depth (FT) is chosen so that it reaches the bottom of the maximum depth ( Tmax) recessed recess (24, 52) penetrates.

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