EP2395183B1 - Profile cylinder key - Google Patents

Description

The present invention relates to a combination of a profile cylinder and an associated profile cylinder key.

Profile cylinder keys are well known. They have a key crayon and a key shaft emanating from the key crayon. Usually located on the key shank recesses for the mechanical alignment of tumblers, which are provided on an associated profile cylinder or lock cylinder. These tumblers consist according to the prior art of core pins and housing pins and are spring-loaded towards the lock core of such a profile cylinder. By aligning the tumblers, which is done with fully inserted profile cylinder key, the parting planes of the core and housing pins are shifted so that ultimately all parting planes are together in the rotational surface of the lock core in the housing of the profile cylinder, so that the lock core is then freely rotatable.

Such profile cylinder key have proven to be excellent, since they provide a high level of security for the honest consumer. Namely, all major manufacturers have committed themselves to copy such profile cylinder key only after presentation of a corresponding security card itself or have copied.

The problem arises, however, when milled with the currently available Kopierfräsverfahren such key blanks, to then simply take over the corresponding recesses on the key shank.

This can no longer be reconciled with the business principles of a well-known manufacturer of such profile cylinder keys and associated profile cylinders, if the manufacturer himself wants to abide by the corresponding promises, which he insures by handing over the security card, but third parties provide everyone with an inadmissibly copied duplicate key can.

From the FR 2 522 053 A1 and the FR 2 759 406 A1 In each case a profile cylinder key for a profile cylinder is known. The profile cylinder key has a movable element. From the DE 197 29 234 A1 is also a profile cylinder key with an integrated movable element known.

The present invention is therefore based on the object, a combination of a profile cylinder and an associated profile cylinder key so that the copy security is further increased without additional electronic identifiers, etc. are necessary.

This object is achieved with a combination of a profile cylinder and a profile cylinder key, which has the features of the main claim.

From the invention results first of the advantage that when making an inadmissible copy for the copier, the function of the coupling element is not clearly visible, since he can not recognize the access authorization position, which may have the coupling element.

The access authorization position of the coupling element can be anywhere within the free movement range of the coupling element or also in the range of possible end stops.

If you want to pass over the information of the coupling element with an invalid copy, this is only possible in

Connection with the knowledge of the mechanical information provided on an associated profile cylinder.

Since the two predetermined positions of the two contact areas of the coupling element, which ultimately express themselves at intervals to the rotational surface of the lock core in the profile cylinder, are generally not known and are not easily reconstructed, the profile cylinder key of the combination according to the invention can not be easily on a Kopierfräsautomaten or similar replicate.

In this case, a particular aspect of the invention comes into play: the mere presence of the coupling element does not allow any statement as to whether the coupling element is actually required even with an associated profile cylinder or not.

In this way, the coupling element according to the invention also has a certain deterrent effect which will reliably prevent the production of impermissible secondary keys.

Essential to the invention is the fact that the two contact areas are present at least in pairs or multiple and that no knowledge of the exact construction of the associated profile cylinder, neither of the two access enabling positions of the contact areas and thus not the access authorization position of the coupling element is recognizable.

This advantage is achieved in that the range of movement of the coupling element, within which the coupling element is reciprocable, although limited by stops, but that the access authorization position of the coupling element is not derivable therefrom, because the access authorization position of the coupling element anywhere within the range of motion, the one by the two Is limited by the interaction of the coupling tumblers involved, if any.

Advantageously, the coupling element is pivotally mounted on a rotational axis, so that it is moved in opposite directions with its contact areas.

The coupling element can also sit in a breakthrough of the key shaft, so that it can be acted upon from both broad sides of the key shaft.

If the axis of rotation of the coupling element arranged parallel to the longitudinal direction of the key shaft, there is the additional advantage that you can come to a reversible key with only a single coupling element, which, however, assumes that the axis of rotation of the coupling element extends in the longitudinal center of the key shaft and both Edge edges forms the same distance.

This will be discussed on the basis of a special reversible key.

Appropriately, the coupling element is arranged as deep as possible in the key channel, that is, as seen from the key tip from preferably in the front region of the profile cylinder key.

On the other hand, the key tip itself may also be designed as a coupling element.

This special feature will be discussed.

As a further special feature, the profile cylinder key of the combination according to the invention with a coupling element, which forms the key tip itself, has an outgoing from the key tip longitudinal groove, which is arranged on one of the two broad sides of the key shaft.

The longitudinal groove is curved and gives the impression that it cooperates with lock cylinder side provided closing elements.

However, it can not be said by looking at the longitudinal groove alone whether this is actually the case.

In any case, however, the copy security of the profile cylinder key can be further increased by this longitudinal groove, because corresponding copying milling machines with correspondingly many degrees of freedom are necessary for the production of the curvilinear longitudinal groove.

The longitudinal groove may preferably be eccentric with respect to the key longitudinal axis and also be arranged point-symmetrically on the key shaft, provided that it is a reversible key.

It can also be based on that arranged on the key tip coupling element must assume a certain rotational position to ensure a smooth transition of the longitudinal groove between the tip side arranged coupling element and the remaining key shank.

This measure additionally increases the security of copying, because copying the longitudinal groove then additionally requires a corresponding rotational position of the key tip in order to ensure said step-free transition at the attachment point of the coupling element on the key shank.

Preferably, the longitudinal groove additionally has an inlet funnel at its beginning, which can be seen on the key tip.

This inlet funnel gives the additional impression of an intended mechanical function of the longitudinal groove on the associated profile cylinder without it being recognizable whether the associated profile cylinder is prepared accordingly or not.

Of special feature is a development of the invention, in which the key shank has an approximately 8-shaped cross section is provided with a widened waist region and an associated profile cylinder in its circular cylindrical region with radial tumblers, which are directed substantially all on the key back.

Since such a profile cylinder key offers a relatively large profile cross-section, takes place by the arrangement of the coupling element according to the invention in cross-section vulnerable narrowest portion of the key shaft in the waisted zone virtually no significant cross-sectional weakening, even if the coupling element for certain functions that can be provided lock cylinder side, not needed becomes.

An associated profile cylinder is characterized by the fact that it has two additional tumblers, where the coupling shaft is located at the key shaft with its two contact areas, also called coupling tumblers, which are aligned transversely to the broad sides of the key shaft and, just like that like the usual mechanical tumblers sitting in bores of the lock core on the one hand and the housing of the profile cylinder on the other.

It is important that the two coupling tumblers are aligned in the key insertion position of the lock core so that the holes between the lock core and the housing are aligned and at least one of the coupling tumblers prohibits the rotational movement of the lock core.

With a matching profile cylinder key with matching coupling element, the coupling tumblers each corresponding to one another are then aligned so that the locking core, assuming a suitable profile cylinder key, is freely rotatable.

The coupling tumblers can be spring-loaded individually or repeatedly.

In order to obtain an unambiguous assignment, it is advisable to apply one of the coupling tumblers in the direction of the lock core by spring and not to cushion the other one. This non-spring-mounted guard locking can also be referred to as passive guard locking. It aligns via the coupling element, the spring-loaded coupling locking in terms of a rotational release of the lock core.

This can be done, for example, that the passive coupling locking by rotation of the lock core aligns the spring-loaded coupling locking so that the parting plane of the two tumbler pins of the sprung tumbler and the outboard tip of the passive coupling locking in the surface of rotation of the lock core.

In this case, the movable coupling element has the function to align the two mutually corresponding coupling tumblers mutually so that both coupling tumblers release the rotational movement of the lock core together.

This is done by the movable coupling element assumes its so-called access authorization position, because the corresponding coupling tumblers can reach their rotational release position only via a corresponding dimensioning of the coupling element.

However, whether ultimately the coupling element is actually required for the respective profile cylinder can, as already mentioned, do not account for the profile cylinder key itself.

Significant in this respect is also the idea that such a system of sprung and not cushioned Koppelzuhaltungen can only work properly with a correspondingly movable coupling element, the sprung Koppelzuhaltung, which is just like the normal tumblers in the direction of the lock core under spring preload, for precise alignment of the not spring-loaded coupling locking serves and vice versa and - seen from a geared view - the coupling element for coupling the two movement possibilities of the coupling tumblers serves.

Another embodiment of the combination according to the invention provides for a profile cylinder key with a coupling element on the key tip inside the housing of the profile cylinder to provide a non-rotatable coupling disc whose contour corresponds exactly to the contour of the coupling element on the key tip, the coupling element on the key tip back and is pivotally mounted and can fit for this reason in a corresponding recess of the coupling disc, if it is the appropriate profile cylinder key.

In this embodiment, the coupling element also has the contact areas according to the invention, which are then adapted to the contour of the coupling disc and vice versa.

The contact areas serve in each case but also the alignment between the insertion depth of the profile cylinder key and the achievement of a corresponding rotational release of the usual tumblers, which can be guaranteed only by a correct insertion depth.

On the other hand, instead of an inner side provided on the housing of the profile cylinder coupling disc and a corresponding coupling locking can be provided, which, as already mentioned above, constructed of core pins and housing pins.

In a preferred embodiment of the profile cylinder key of the combination according to the invention, the coupling element during insertion of the profile cylinder key in the lock core of the lock cylinder within the outer contour of the key shaft and occurs when turning the lock core partially on the outer contour. The profile cylinder key can be easily inserted into the keyway without the coupling element blocking the insert. Only after the profile cylinder key has been fully inserted, the coupling element is deflected and occurs on the outer contour of the key shaft. However, this takes place only when the lock core has been slightly rotated, so that the profile cylinder key can not be removed. In this case, the coupling element in its access authorization position partially protrudes beyond the outer contour of the key shaft.

According to the invention, two coupling tumblers engage the coupling element, at least one coupling tumbler having a core pin and a housing pin. In this case, the section of the housing pin pressing the core pin into the lock core engages in a recess receiving the core pin in the lock core, the cross section of which is greater than the cross section of the section. In particular, the portion has a smaller diameter, as the abutting head of the core pin.

According to a coupling locking in the direction of the coupling element is spring-loaded or biased by a spring force, whereas the other coupling locking springless is. The coupling tumblers are arranged substantially radially in the lock core.

In a preferred embodiment, it is provided that a coupling locking on its side facing away from the coupling element side has a lenticular or spherical portion-shaped head which engages in a receiving recess in the profile cylinder housing. The housing pin is spring loaded in the direction of the core pin. Preferably, the coupling tumblers engage on opposite sides of the coupling element on this. The coupling element serves e.g. as a rocker for the coupling tumblers.

Further advantages, features and details will become apparent from the subclaims and the following description in which preferred embodiments are described in detail with reference to the drawing. The features shown in the drawing and mentioned in the description and in the claims may each be essential to the invention individually or in any combination.

Figur 1:

einen Längsschnitt durch einen Profilzylinder (schematisch) mit nicht erfindungsgemäßem Profilzylinderschlüssel;

Figur 2a:

einen Querschnitt aus einem Profilzylinder mit einer gefederten und einer ungefederten Zuhaltung an der Stelle des Koppelelements;

Figur 2b:

einen Querschnitt gemäß Figur 2a mit teilweise eingestecktem Schlüssel;

Figur 2c:

einen Querschnitt gemäß Figur 2a mit vollständig eingestecktem Schlüssel;

Figur 3a:

eine Detailansicht eines Schlüsselquerschnitts mit integriertem Koppelelement und zweiseitig beaufschlagenden Koppelzuhaltungen;

Figur 3b:

eine Detailansicht einer Schlüsselspitze mit zurückversetztem Koppelelement;

Figur 3c:

eine Detaildarstellung der Koppelzuhaltung 28 aus Figur 3a;

Figur 4:

einen Querschnitt durch den Profilzylinder mit eingestecktem Profilzylinderschlüssel;

Figur 5:

den Querschnitt gemäß Figur 4 bei gedrehtem Zylinderkern; und

Figur 6:

einen Querschnitt gemäß Figur 4 bei gedrehtem Zylinderkern jedoch unberechtigtem Schlüssel.

In the drawing show:

FIG. 1:

a longitudinal section through a profile cylinder (schematically) with not inventive profile cylinder key;

FIG. 2a:

a cross section of a profile cylinder with a sprung and an unsprung tumbler at the location of the coupling element;

FIG. 2b:

a cross section according to FIG. 2a with partially inserted key;

FIG. 2c:

a cross section according to FIG. 2a with fully inserted key;

FIG. 3a:

a detailed view of a key cross section with integrated coupling element and acting on two sides coupling tumblers;

FIG. 3b:

a detailed view of a key tip with zurückversetzem coupling element;

FIG. 3c:

a detailed representation of the coupling tumbler 28 from FIG. 3a ;

FIG. 4:

a cross section through the profile cylinder with inserted profile cylinder key;

FIG. 5:

the cross-section according to FIG. 4 with turned cylinder core; and

FIG. 6:

a cross section according to FIG. 4 with turned cylinder core but unauthorized key.

Unless otherwise stated below, the following description applies to all figures. The figures essentially show a profile cylinder key 1. Such a profile cylinder key 1 has a key crop 2. From the key crop 2 is a key shank 3, which extends to the key tip 27. The key shank 3 is provided with recesses 4. The recesses 4 are used to align tumblers 5, which are usually provided in the lock cylinder.

For this purpose, the tumblers 5 consist of core pins 6 and housing pins 7 and are usually acted upon by compression springs in the direction of the lock core 13.

They sit for this purpose in holes, which are provided on the one hand in the lock core 13 and on the other hand in the housing 10 of the profile cylinder 9.

Depending on the construction of the profile cylinder 9, the bores can be arranged either in the circular-cylindrical housing part 11 and / or in the web-like housing part 12 of the housing 10 of the profile cylinder 9. In that regard, reference is made in full to the state of the art. There, such mechanical tumblers are known in many designs. It is essential that at the key shaft 3 a reciprocating between two end positions arranged coupling element 15 is seated. The coupling element 15 has two or more contact areas 17,18,19,20, which are accessible in the use position of the inserted in the associated profile cylinder 9 profile cylinder key 1 from outside the key shaft 3 and, so to speak, closing cylinder side. By acting on the contact areas, the coupling element 15 is aligned in the sense of possible reciprocating movements, so that it is displaced by the orientation in an access authorization position in which the intended contact areas 17,18,19,20 predetermined positions with respect to the rotational surface fourteenth occupy the lock core 13 in the profile cylinder 9.

For the sake of completeness, it should be mentioned here that the locking core 13 is rotatably mounted in the circular-cylindrical housing part 11 of the housing 10 and forms the so-called rotary surface 14 along its common lateral surface with the inner surface of the locking core bore 35. This rotation surface 14 is usually traversed by the tumblers 5 and beyond also by further coupling tumblers, which are arranged in the profile cylinder 9 and will be discussed later.

With respect to the profile cylinder key 1, the coupling element 15 is pivotally mounted on a rotation axis 22. This means that the coupling element 15 can be pivoted back and forth about the axis of rotation 22 and in this way gives the impression that such a profile cylinder key can not be easily reworked by a Kopierfräsanlage.

In addition, if the axis of rotation 22 is allowed to extend parallel to the longitudinal direction 23 of the key shank, the bearing of the coupling element 15 can be replaced by a simple axial bore in the key shank by e.g. take a chosen notched pencil.

In addition, the figures show a special feature. There, the axis of rotation 22 in the longitudinal center 24, d. H. arranged on the center line 24 of the key shaft 3. This measure offers the additional possibility of executing the profile cylinder key 1 as a reversible key on which the recesses 4 provided are then correspondingly symmetrical.

An essential idea of the invention is also based on the fact that the inventive possibilities of the coupling element lead to select those act on contact areas 17,18,19,20 with respect to the profile cylinder key and of course also with respect to the key channel, which move in opposite directions.

It is therefore also important to provide the contact areas 17, 18, 19, 20 of the coupling element where, when appropriately acted upon by associated coupling tumblers, a movement of the one contact area towards the key shaft causes a movement of the complementary or corresponding contact area away from the key shank. In this sense, the various embodiments of the FIGS. 2a to 3 to understand.

Only by this alternating kinematics of the contact areas, namely the coupling tumblers can be accordingly to be able to be aligned according to the coupling element alone.

It is not necessarily important that the respective corresponding contact areas are on only one side of the key shaft, such. B. FIG. 3a , There are the contact areas 17, 18; 19, 20; 17, 19; 18, 20 conceivable to verify the mutual orientation of the corresponding coupling tumblers.

Especially Figure 2a - 2c and 3a show for this purpose that the contact areas 17, 18 and the further contact areas 19, 20 can also be accessible from both sides of the key shaft 3.

If the coupling element 15 is arranged in the front third between the key tip 27 and the key crop 2, the corresponding coupling tumblers, which will be discussed, would sit deep in the keyway, so that manipulation attempts will be made considerably more difficult.

In particular, the show FIGS. 2a-2c and 3a the interaction of the profile cylinder key according to the invention with an associated profile cylinder. 9

Such a profile cylinder 9 has in its housing 10, either in the circular cylindrical housing part 11 or in the web-like housing part 12, mechanical tumblers 5, which consist of core pins 6 and housing pins 7.

In FIG. 1 a single such tumbler is shown by way of example. It is aligned by a corresponding recess 4 on the key shank so that the dividing plane between the core pin 6 and housing pin 7 is exactly in the rotational surface 14, which circumscribes the lock core 13. Since all these tumblers are aligned by a matching key, the lock core 13 can then rotate freely. In addition, however, at least two further tumblers are provided here in the present case, referred to in the present case as Koppelzuhaltungen 28, 29, which also consist of core pins 6 and housing pins 7. In a corresponding rotational position of the lock core 13, the core and housing pins of the coupling tumblers 28, 29 are aligned with each other and are in this way within the longitudinally displaceable both partial bores. However, this requires that a corresponding alignment of the core and housing pins of the coupling tumblers 28, 29 takes place via the coupling element 15. For this purpose, the coupling tumblers 28, 29 are one-sided (see FIG. FIG. 2a . 3a ) spring loaded.

In case of FIG. 3a would be possible by the provided fourth contact area 20 even two more Koppelzuhaltungen.

Alternatively, however, the individual contact areas 17-20 could be varied accordingly to produce an even greater burglar resistance. For example, there are 2 ⁴ = 16 variations for four contact areas.

Furthermore, in particular Figure 2a - 2c and 3a a variant in which of the provided coupling tumblers 28, 29 is only a single spring loaded, while the other coupling tumbler 29 is designed as a passive element, which aligns the spring-loaded coupling locking on the coupling element.

In one possible embodiment, the coupling element 15 is displaced by the spring-loaded coupling tumbler until the non-spring-loaded coupling tumbler 29 has run to the stop. In this position, this indicates Coupling element 15 then the access authorization position 21, in which a matching profile cylinder key 1 has then aligned the usual mechanical tumblers 5 to open the door.

As can be seen from the foregoing description, there are various possibilities of arranging a coupling element on the key shaft and, moreover, also different arrangements of coupling tumblers 28, 29. Either both Koppelzuhaltungen are spring-loaded and are aligned on the common coupling element under their respective Federvorlasten that the lock core can be rotated or it is only one Koppelzuhaltung spring loaded while the other Koppelzuhaltung is aligned by rotation of the lock core, which, however, requires that an authorized profile cylinder key is used, which also aligns the usual mechanical tumblers 5.

On the other hand, it is advisable, when using a sprung Koppelzuhaltung 28 in conjunction with a passive Koppelzuhaltung 29, only the sprung Koppelzuhaltung 28 in two parts to design, as in the case of Figure 2a - 2c and 3a has been shown.

In this case, however, it must be ensured that the spring-loaded tumbler allows the rotational movement of the lock core even when the passive coupling tumbler 29 has not yet definitively aligned with the coupling element 15.

The FIGS. 2a-2c and FIGS. 3a and 3c show a further exemplary embodiment. First of all, shows FIG. 2a the orientation of the two coupling tumblers 28,29 with respect to the key channel 40 o, key core 13th

Both coupling tumblers 28, 29 extend a small distance into the keyway 40. The passive coupling lock 29 is integrally formed and rests with a dome-shaped Protrusion 38 in a corresponding locking recess 39, which is provided on the housing side. This passive coupling lock 29 has only one core pin 6, no housing pin. In contrast, the sprung coupling tumbler 28 is constructed in two parts and has a core pin 6 and a housing pin 7.

A compression spring 8 pushes the core pin and the housing pin inwards in the direction of the key channel 13, where the tip of the core pin protrudes a little way into the keyway 13. It can be seen that only the coupling tumblers 28, 29 prevent rotation of the lock core 13, because on the one hand the passive coupling tumbler 29 sits with its cap 38 in the locking recess and on the other hand, the housing pin 7 of the sprung Koppelzuhaltung 28 exceeds the plane of rotation 14.

Will now, as in FIG. 2b shown, a lock cylinder key inserted, which has a corresponding coupling element 15, so this coupling element approaches the Koppelzuhaltungen 28,29 with increasing insertion depth, so that it strikes at a predetermined insertion depth on the top of the passive Koppelzuhaltung 29. Since this passive coupling locking can not escape because it sits with your dome-shaped protuberance 38 in the locking recess 39, the coupling locking 15 is shifted clockwise with further insertion of the profile cylinder key in the keyway 13 in the direction of the sprung Koppelzuhaltung 28 on the right side. Once the necessary insertion depth has been reached, the coupling element 15 lies in the same radial plane as the coupling tumblers 28, 29, but the passive coupling tumbler 29 lies against the pivotable coupling element 15, which in turn bears against the inwardly directed tip of the core pin 6 of the sprung coupling tumbler 28.

The core pin 6 in turn pushes with its outwardly directed surface against the head of the housing pin 7, which in turn is pressed by the compression spring 8 in the direction of the keyway 13. This creates a four-part system. The passive Koppelzuhaltung 29 is movable radially inwardly, the coupling element 15 is pivotally movable in a clockwise direction, the sprung Koppelzuhaltung 28 is movable radially outward.

In order to rotate the lock core 13 then free, but it requires a partial rotation to lift out the dome-like protuberance 38 from its locking recess 39, while the lock core 13 may not yet be completely free to rotate.

For this purpose, the head of the housing pin 7 of the sprung coupling tumbler 28 is smaller in diameter than the mutually aligned partial bores in the housing 10 on the one hand and in the lock core 13 on the other. It forms, so to speak, at the head of the housing pin the diameter step 50. The lock core 13 is thus able to rotate with respect to the sprung Koppelzuhaltung 28 until it abuts with its bore wall on the smaller diameter head of the housing pin of the sprung Koppelzuhaltung 28.

At this time, however, the passive coupling tumbler 29 must be lifted out of the locking recess 39 in the housing so far that then the common contact surface between the housing pin 7 and core pin 6 of the sprung Koppelzuhaltung 28 lies in the common surface of rotation 14. This case is in Figure 2c shown.

It can be seen that the passive coupling locking device will slide with the central region of its dome-shaped protuberance on the inner circumference of the housing, in which case it has rotated the coupling element 15 clockwise by the dimension A, which ultimately corresponds to the movement region 16.

This measure corresponds to taking into account the gear ratios the dimension A ', which corresponds to the distance between the common contact surface of the core pin 6 and housing pin 7 to the rotating surface 14.

In this way, then, let oneself, as from the FIGS. 2a-2c shows, the core 13 of the lock cylinder under the condition of a suitable combination of recesses 4 rotate, but only to the extent that then the function of coupling element 15 and coupling tumblers 28,29 is required (if any) to continue to turn the lock core 13 can.

In this case, it is in particular the diameter stage 50 which, in this exemplary embodiment, permits a rotational movement of the lock core 13 in order to interrogate the exclusion criterion of a coupling element 15 tuned to the coupling tumblers 28, 29 at the end of this movement scope.

This query is done here mechanically by the corresponding contact areas 17,18,19,20, if the coupling tumblers 28 and 29 are provided.

In addition to this shows the FIG. 3b a development of the invention, in which in addition to the coupling element 15, a longitudinal groove 37 is provided, which extends over the length of the key shank to form a curved profile.

Since the longitudinal groove can only be produced by machining processes, the simple copying of the longitudinal groove is not readily possible.

Furthermore, the longitudinal groove 37 on the tip side of the profile cylinder key on an inlet funnel, which gives the additional impression that in this longitudinal groove a locking cylinder side provided locking element can / should dive.

The main advantage of the invention is based on the fact that on the one hand can not be reliably assessed whether the coupling element 15 is needed for a profile cylinder to be closed, since the coupling element does not allow this unambiguous statement, but on the other hand, the coupling element can not be easily reworked by a Profilfräsverfahren because the exact access authorization position 21 of the coupling element 15 in the insertion position of the profile cylinder key 1 can not be seen without detailed knowledge of the construction of the profile cylinder 9.

The FIGS. 4 to 6 show a cross section through the profile cylinder 9 with inserted profile cylinder key 1, wherein in the FIG. 6 an unauthorized profile cylinder key 1 'is inserted. The authorized profile cylinder key 1 is equipped with the coupling element 15, which in only inserted profile cylinder key 1 ( FIG. 4 ) lies completely within the contour of the profile cylinder key 1. Does the lock core 13 a rotational position, as in the FIG. 5 shown, then the coupling element 15 emerges at least in sections over the contour of the profile cylinder key 1. This is effected by the second coupling tumbler 29 being pressed radially into the lock core 13 by turning the lock core 13, thereby rotating the coupling element 15 about the rotation axis 22, so that regions of the coupling element 15 protrude beyond the contour of the profile cylinder key 1. As a result, however, the first coupling tumbler 28 is pressed radially outwards, so that the spring-loaded housing pin 7 no longer engages in the lock core 13. The lock core 13 is freely rotatable.

In an unauthorized profile cylinder key 1 '( FIG. 6 ) lacks the coupling element 15 or the unauthorized Profile cylinder key 1 'has a wrong coupling element 15. As a result, the coupling tumbler 28 is not actuated or is not actuated correctly. In any case, the housing pin 7 is not pushed so far out of the lock core 13 that it no longer engages in this. The lock core 13 can not rotate, although all other tumblers 5 assume the correct position.

Claims (14)

1. Combination of a profile cylinder with associated profile cylinder key (1) with a key bow (2) and with a key shaft (3) starting from the key bow (2), and with a coupling element (15) which is arranged so that it can be moved back and forth on a key shaft, and which, in the position of use of the profile cylinder key (1) inserted in the associated profile cylinder (9), comprises two contact areas (17, 18) on the locking cylinder side, which are accessible from the outside of the key shaft (3), and which can be acted on in the sense of the back and forth movements of the coupling element (15), wherein the coupling element (15) comprises, within the movement area (16) of the back and forth movements, at least one access authorization position, which is defined by predetermined positions of the contact areas (17, 18) with respect to the rotation surface (14) of the locking core (13) in the profile cylinder (9), and an associated profile cylinder (9) which comprises at least two coupling tumblers (28, 29) of which at least one comprises a core pin (6) and a housing pin (7), wherein the core pin and the housing pin fit in bores of the locking core (13), on the one hand, and of the housing (10) of the profile cylinder (9), on the other hand, which extend transversely to the broad sides (32) of the inserted key shaft (3) and which are aligned with one another in the key insertion position of the locking core (3), and wherein the core pin and the housing pin, in the access authorization position (21) of the profile cylinder key (1), lie with their respective separation surface between the core pin and the housing pin in the rotation surface (14) of the locking core (13) in the profile cylinder (9), wherein the coupling element (15) is mounted swivelably on a rotation axle (22) which extends parallel to the longitudinal direction (23) of the key shaft (3), and wherein, on the coupling element (15), the two coupling tumblers (28, 29) engage, characterized in that one of the two coupling tumblers (28, 29) is acted on by a spring in the direction of the locking core (3), and the other one is not spring-loaded, in that the segment of the housing pin (7) pushing the core pin (6) into the locking core (13) engages in a recess in the locking core (13) that receives the core pin (6), the cross section of which is greater than the cross section of the segment of the housing pin (7), and the segment of the housing pin (7) has a smaller diameter than the head of the core pin (6) adjoining it.
2. Combination according to claim 1, characterized in that the coupling element (15) comprises contact areas (17-19; 18-20) provided on the two sides of the key shaft (3).
3. Combination according to any one of the preceding claims, characterized in that the coupling element (15)

   - is arranged between the key tip (27) and the key bow (2), and, in particular, viewed from the key tip (27), in the front third of the key bow (2); or

   - it is arranged on the key tip (27) and forms the key tip (27), and, in particular, it comprises the start of a longitudinal groove (37) which continues beyond the contact point of the coupling element on the key shaft into the key shaft, wherein, in particular, the longitudinal groove (37) on the coupling element (15) starts with an intake guide.
4. Combination according to any one of the preceding claims, characterized in that, when the profile cylinder key (1) is introduced into the locking core (13), the coupling element (15) lies within the outer contour of the key shaft (3), and when the locking core (13) is turned, it protrudes partially beyond the outer contour.
5. Combination according to any one of the preceding claims, characterized in that, in its access authorization position, the coupling element (15) protrudes partially beyond the outer contour of the key shaft (3).
6. Combination according to any one of the preceding claims, characterized in that the coupling tumblers (28, 29) are arranged substantially radially in the locking core (13).
7. Combination according to any one of the preceding claims, characterized in that one coupling tumbler (29) comprises, on its side facing away from the coupling element (15), a lens-shaped or spherical segment-shaped head (38) which engages in a recess (39) which receives said head in the profile cylinder housing (11).
8. Combination according to any one of the preceding claims, characterized in that the housing pin (7) is spring-loaded in the direction of the core pin (6).
9. Combination according to any one of the preceding claims, characterized in that the coupling tumblers (28, 29) engage on opposite sides of the coupling element (15) with said coupling element.
10. Combination according to any one of the preceding claims, characterized in that the coupling element (15) is used as a linkage for the coupling tumblers (28, 29).
11. Combination according to any one of the preceding claims, characterized in that recesses (4) are provided on the key shaft (3) for the alignment of tumblers (5) provided on the locking cylinder side and consisting of core pins (6) and housing pins (7).
12. Combination according to any one of the preceding claims, characterized in that the other coupling tumbler (29; 28) sits with its end facing away from the locking core in a stop depression (39) of the housing and, in the access authorization position (21) of the profile cylinder key (1), it moves, via the coupling element, the spring-loaded coupling tumbler (28; 29) into release position.
13. Combination according to any one of the preceding claims, characterized in that the profile cylinder key and the key channel each have a figure-8-shaped cross section with broadened waist area, and in that the tumblers (5) on the locking cylinder side and the recesses (4) on the key side lie in the circular cylindrical portion of the profile cylinder, oriented radially with respect to the key back.
14. Combination according to any one of the preceding claims, characterized in that tumblers (5) are provided on the locking cylinder side and consist of core pins (6) and housing pins (7), and can be aligned through the recesses (4) on the key shaft (3).

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