AT16096U1 - Lock cylinder and keys - Google Patents

Abstract

In a lock cylinder with a housing (11) and a rotatable core (12) and with tumblers consisting of housing pins (24) and core pins (23) is between a housing pin (24) and the associated core pin (23) a Umstellelement (19) provided so that two division surfaces result and thus two different keys, namely a service key (25 a) and a user key (25), are entitled to block. In the core (12) - offset in the circumferential direction to the core bore (21) of this Zuhaltungskanals - a recess (14) is provided, in which the Umstellelement (19) is stored when the lock cylinder is locked with the user key (25), so that the service key (25a) loses his blocking entitlement. According to the invention, an actuating element (16) is provided in the core (12) which, when actuated, reduces the depth of the recess (14), so that with the actuating element (16) the changeover element (19) - when the recess (14) with the housing bore (22 ) of the corresponding Zuhaltungskanals - in the housing bore (22) is displaceable, so that the service key (25a) is entitled to block again.

Description

The present invention relates to a lock cylinder with a housing and a rotatable core in the housing, wherein a plurality of housing bores and a plurality of aligned in the withdrawal position with the housing bores core holes are provided so that Zuhaltungskanäle arise in which provided tumblers consisting of housing pins and core pins are, wherein the housing pins are spring-loaded in the direction of the core, wherein further a keyway is provided, in which a key is inserted, which positions the tumblers by its teeth or depressions, so that in a key with the right key, the dividing surfaces between the housing pins and the core pins lie at the interface between the core and the housing; in that at least one tumbler channel between the housing pin and the core pin a Umstellelement is provided so that two division surfaces result and thus two different keys, namely a service key and a user key, are entitled to block, the service key is deeper at the location of this tumbler than the user key ; that in the core - offset in the circumferential direction of the core bore of this Zuhaltungskanals - a recess is provided, in which the Umstellelement is stored when the lock cylinder is locked with the user key, so that the service key loses its blocking authorization.

Organization of the access is one of the main tasks of a lock cylinder. In some applications, a temporary or deliberate action is desired for a normally unauthorized key.

This is controlled by mechatronic cylinders by the electronics. Such a function is also available for purely mechanical lock cylinders.

This is usually solved with a second key withdrawal, i. in a second position there is an additional division level where the service key locks. Such a solution is described in US 5046342 A. The principle is that in addition to the "normal" series of housing bores for the tumbler channels offset by 60 ° another series of housing bores is provided, in which the same housing pins are provided as in the "normal" series. In at least one housing bore of the further series, there is not only a housing pin ("upper pin"), but also a changeover element ("intermediate pin"). Due to this second series of housing bores, the user key can be removed both in the normal, vertical position ("user position") and in a position rotated by 60 ° ("service position"). When using the user key, the changeover element always remains in the housing bore of the further row.

If the user key deducted in the service position, a service key can be inserted, the toothing is milled deeper at the position with the Umstellelement (namely, the height of the Umstellelements deeper), and this service key locks because the Umstellelement now no longer in the housing bore, but is pressed into the core hole. However, if the service key is inserted in the user position, it does not lock because there is no changeover element there, i. the housing pin protrudes partly into the core because of the deeper milling and blocks it.

The most obvious disadvantage is the complex production, since the housing (the stator) has to be drilled and filled a second time. Furthermore, the second deduction requires an additional check as to whether this position also works with the various locks.

Thus, the service key can not be deducted unauthorized in the user position (this would cause the Umstellelement in the "normal" Zuhaltungskanal, whereby service position and user position would be reversed), is working according to US 5046342 A with an axial displacement of the core. The core can be rotated only when the core is pressed somewhat axially into the housing with a mechanism to prevent the core from returning to its original position when rotated with the service key to the user's position. As a result, the housing holes and the core holes are not aligned, the service key can not be removed, and thus there can be no undesirable Umschlichtungen.

However, this requires a large request to the permutation (locking system elaboration), as although the Umschlichtung with the service key is prevented by the axial movement, but not with the user key. Therefore, it must be calculated / filled so that when locking with the user key all locking plates are in the housing, thereby preventing a lock.

[0009] A lock cylinder of the type mentioned at the outset is sold by the applicant under the name "Gege SUZ", see [0010] http://www.kaba.com/access-control/de/loesungen/mechanische- schliesszylinder- / schliesszylinder- mitzackenschlesseln / 1088694 / sonderfunktion-gege-suz.html [0011] In this system, a changeover element (plate or ball), which generates an additional division plane, is deposited in the core. This is irreversible. These locks are intended for the construction phase. That the service key locks in front of the apartment, and as soon as the homeowner locks with his user key for the first time, the service key loses the lock authorization.

This is achieved by rotating in the core - radially to e.g. 60 ° or 90 ° offset - a recess is provided. The service key is milled deeper at the location of the diverter so that the diverter is always in the core bore as long as the service key is in use. However, if the user key is used, which is milled less deep at this point, the Umstellelement remains in the housing bore. Now, if the core is rotated, the Umstellelement is due to the tumbler, which acts on the housing pin on the Umstellelement, at the core with a slight pressure. As soon as the recess of the core comes to lie over the housing bore, therefore, the Umstellelement is pressed into this depression and remains trapped there.

This is much less expensive than the provision of a second series of housing bores, but has the disadvantage that the process is irreversible, i. E. In this cylinder, an authorized key is forever unjustified by the "locking".

It is an object of the present invention to eliminate this disadvantage.

This object is achieved by a lock cylinder of the type mentioned according to the invention in that an actuating element is provided in the core, which reduces the depth of depression when actuated, so that with the actuating element Umstellelement - when the recess with the housing bore of the corresponding Zuhaltungskanals is aligned - is slidable into the housing bore, so that the service key is again entitled to block.

The Umstellelement can be a ball, but can also be a small plate. The use of a ball has the advantage that the Umstellelement does not have to be pressed exactly into the housing bore; when it is mostly in the housing bore and the core is twisted, a spherical Umstellelement automatically slides into the housing bore. With a small plate, a similar, though not so great, effect can be achieved by chamfering.

The actuating element is preferably a slide which is axially parallel to the core. This is easy to realize, and a slider can also be easily operated (it only has to be pressed). The slider has a recess at the location of the Umstellelements in the non-pressed state, so that the recess in the core for receiving the Umstellelements sufficient in the non-actuated state, but not in the actuated state.

In the normal state, the Umstellelement (ball) is stored in the recess of the core and it locks only the user key. If you now want to allow the service technician access, you turn with the infected user key in the position where the housing bore with the recess in the core in which the Umstellelement (ball) is stored, presses the slide and thereby pushes the Umstellelement (ball) into the housing bore. Then you turn back to the trigger position and remove the user key.

It can be seen that the service function is active, characterized in that the slide can always (ie in the deduction position) can be pressed. The service key now locks. If the service function is not active, the slide (except in the above-mentioned position, where the recess is flush with the housing bore) can not be pressed because the Umstellelement can not move out of the recess, which the slider but trying to force.

After the service operation, the user needs only normal lock with his user key with the slide in the starting position (turn), and the Umstellelement (ball) is again stored in the core, as is known from the above-mentioned locks GEGE SUZ.

The operation is particularly simple when the slider is biased towards the starting position by a spring. In this case, there is no need to worry about bringing the slider to the initial position for ending the service function.

However, it could be problematic that the user function unintentionally deactivates the service function when locking.

For this reason, a key is proposed according to the invention, in which an integrated slide is provided, with which the actuating element is actuated. Preferably, the integrated slider is equipped with a locking function at least in the extended position.

One can thus use the user key with built-in slide to conveniently ensure access to the service key by blocking with said user key with extended slide. If the user key additionally has a locking function, it is possible to ensure the continuous use of the service key even if the user key is used in the meantime. So that only the user key blocks, only the slide must be retracted and locked once without the use of the slider.

Alternatively, it can be provided according to a further embodiment of the invention that the slider is locked in the core in the operating position. This locking is best done automatically, e.g. with a catch. In this case, the slider must then be actively pulled out so that the service function is released by locking with the user key. Since this is hardly possible due to the small size without tools, it is provided according to a further embodiment that the lock can be released by a special key. This special key has a projection in comparison to the user key and the service key that releases the lock when it is inserted.

As an alternative to being designed as a slide, the actuating element may also be a rotor, e.g. can be brought into the operating position by means of a screwdriver.

If the lock cylinder has pins for drilling protection, they can be used in an appropriate manner to the fact that the actuator is axially or radially secured by at least one of the pins for drilling protection. In this way, a spring-loaded slide can not get out of the core, even with force pulled out of the core.

The problem may be that a core with a protruding actuator can not be used together with Kernzieh-Schutzrosetten. Therefore, it is provided as a further embodiment of the invention that the actuating element is sunk in the core and can be actuated by a special key. In this case, Kernzieh safety rosettes can be used without restriction. This special key can be the one already described

User key with integrated slider.

Particularly advantageous in the present invention is that all special parts are provided in the core, i. Standard housings can be used, which reduces manufacturing costs. Furthermore, there is only one deduction of the key, i. it always stays the same regardless of whether the service function is activated or not, so that users can not be irritated by the second trigger position.

With reference to the accompanying drawings, the present invention will be explained in more detail. FIG. 1 shows a locking cylinder according to the invention in an exploded view; FIG. Fig. 2 shows the core of the lock cylinder, shown transparent; FIG. 3 shows the lock cylinder, partly in longitudinal section, with the service function deactivated and with the user key inserted; FIG. Fig. 4 is a section along the line IV-IV of Fig. 3; Fig. 5 is a view similar to Figure 4, but after a rotation of the core by 60 °, with the actuating element in the starting position. Fig. 6 is a view similar to Figure 5 after actuation of the actuating element. Fig. 7 is a view similar to Figure 6 after turning back the core in the deduction Stel; 8 shows a view analogous to FIG. 3, but with the service function activated and with the service key inserted; Fig. 9 is a section along the line IX-IX of Fig. 8; FIG. 10 shows a view analogous to FIG. 8 with the service key inserted, but with the service function deactivated; FIG. FIG. 11 shows a wafer which can be used as a changeover element; FIG. FIG. 12 shows a user key with integrated slide with latching function; FIG. FIG. 13 shows the latching mechanism; FIG. and Fig. 14 shows the user key in an exploded view.

As can be seen from Fig. 1, the lock cylinder according to the invention has a normal housing 11 in which a core 12 is rotatably arranged. As usual, a keyway 13 and core bores 21 (see Fig. 2) are provided in the core 12, which are aligned with housing bores 22 (see Fig. 3) in the trigger position of the key. In a known manner, core pins 23 are inserted into the core bores and housing pins 24 are inserted into the housing bores. The latter are biased by a spring in the direction of the core 12. (This spring is not shown in the other figures for clarity.) According to Fig. 3, the user key 25 is inserted into the keyway 13, the toothing is matched to the core pins 23 that they end exactly on the surface of the core 12 , As a result, the dividing plane between the core pins 23 and the housing pins 24 is exactly at the interface between the core 12 and the housing 11, so that the core 12 can be rotated. If, on the other hand, an unauthorized key is plugged in, for example the service key 25a (see FIG. 10), if the service mode is not activated, the housing pin 24 protrudes into the core bore and thus blocks the core 12 because the service key 25a is deeper at the corresponding location is milled. Thus, the housing pin 24 blocks the core 12 and the service key 25a does not lock.

As far as it is the usual operation of lock cylinders.

In addition to this normal construction, the core 12 has a recess 14 (see FIGS. 1 and 2) in which a switching element in the form of a ball 19 can be deposited.

In addition, a bore 15 is provided which blends with this recess 14. In the bore 15, a slider 16 is inserted, which has a recess 18, which is in the starting position of the slider 16 (see Fig. 2) in the region of the recess 14, so that the ball 19 is completely in place. However, pushing the slider 16 into the core 12, a thicker portion of the slider 16 enters the recess 14, so that the ball 19 is pushed out of the recess 14, since the recess 18 via a corresponding bevel in the thicker portion of the slider 16 passes. Behind the slide 16 is located in the bore 15, a spring 17 (see Fig. 1, in Fig. 2, the spring is not shown), so that the slider 16 is pushed back after its operation in the starting position. Furthermore, the core 12 has two pins 20 as drilling protection.

One of these pins 20 protrudes into the bore 15 for the slider 16. By a corresponding recess of the slider 16 in the region of the pin 20 space is created for the pin 20; the length of the depression determines the path of movement of the slider 16, i. in particular, that - as soon as the pins 20 are inserted - the slider 16 can not get out of the core 12.

The conversion of the lock cylinder into the service mode will now be explained with reference to FIGS. 4 to 7. Fig. 4 shows the initial position shown in Fig. 3, i. the user key 25 has been infected. As previously explained, the core 12 is now rotatable. If you turn the core 12 by 60 ° (see Fig. 5), the ball 19 comes to lie exactly over the housing pin 24. Normally, the spring-loaded housing pin 24 presses the ball 19 in the recess 14 so that they can not leave. If, however, in this position, the slider 16 is actuated, a thicker portion of the slider comes in the area of the ball 19 (see Fig. 6), so that the ball 19 passes into the housing bore 22, pushing the housing pin 24 down. Turning now the user key 25 in the deduction position back (see Fig. 7), the ball 19 remains in the housing bore 22nd

Subtracting now the user key 25 and puts the service key 25a, resulting in the situation shown in Figs. 8 and 9: the ball 19 comes - since the service key 25a is milled deeper at the appropriate location - in the core hole but exactly so that it closes with the open end of the core hole. This in turn creates a dividing plane, between the ball 19 and the housing pin 24. Thus, the lock cylinder can be locked with the service key 25a.

Inserting now again the user key 25, the situation arises from Fig. 7; If one then turns the core 12 by 60 °, the situation arises from FIG. 5, because the housing pin 24 presses the ball 19 into the recess 14: the service mode is thus terminated.

Fig. 11 shows a plate 26, which can be used instead of the ball 19 as a switching element. The plate 26 has chamfers 27, so that it does not jam when it is incompletely pressed into the housing bore, but slips into it.

12 to 14 show a user key 28 with integrated slide 30. In the illustration shown with retracted slide 30 is granted when using the key 28 in succession only the user key access. Fig. 13 is a detail view of a detent element 29 which can be used. In the illustration shown, the locking element 29 is in the position in which the slider 30 is retracted. If the slider 30 were extended, both the user key and the service key could subsequently lock.

In Figs. 12-14, this user key 28 is shown as having the slider 30 cooperating with a protruding slider 16 as shown in Fig. 2. When the slider 30 is slightly longer, the slider 16 can be made correspondingly shorter, so that it does not protrude from the core 12 even in the non-actuated position.

Claims (11)

claims 1. Lock cylinder with a housing (11) and a housing (11) rotatable core (12), wherein a plurality of housing bores (22) and a plurality of in the deduction position with the housing bores (22) aligned core bores (21) are provided, so that Zuhaltungskanäle in which tumblers consisting of housing pins (24) and core pins (23) are provided, wherein the housing pins (24) spring-loaded in the direction of the core (12), wherein further a keyway (13) is provided, in which a key ( 25, 25a) can be inserted, which positions the tumblers by means of its toothing or depressions, so that, in the case of a key (25, 25a) which is entitled, the dividing surfaces between the housing pins (24) and the core pins (23) at the interface between the core (12) and housing (11) lie; wherein in at least one Zuhaltungskanal between the housing pin (24) and the core pin (23) a Umstellelement (19, 26) is provided, so that there are two dividing surfaces and thus two different keys, namely a service key (25 a) and a user key (25) , the service key (25a) at the location of this tumbler is lower than the user key (25); wherein in the core (12) - offset in the circumferential direction of the core bore (21) of this Zuhaltungskanals - a recess (14) is provided, in which the Umstellelement (19, 26) is stored when the lock cylinder is locked with the user key (25), so that the service key (25a) loses its lock authorization; wherein in the core (12) an actuating element (16) is provided which reduces the depth of the recess (14) when actuated, so that with the actuating element (16) the Umstellelement (19) - when the recess (14) with the housing bore (22 ) of the corresponding Zuhaltungskanals - in the housing bore (22) is displaceable, so that the service key (25a) is entitled to block again, characterized in that the lock cylinder with pins (20) is provided for drilling protection and the actuating element (16) by at least one of Pins (20) for drilling protection axially and / or radially secured. 2. Lock cylinder with a housing (11) and a housing (11) rotatable core (12), wherein a plurality of housing bores (22) and a plurality of in the deduction position with the housing bores (22) aligned core holes (21) are provided, so that Zuhaltungskanäle in which tumblers consisting of housing pins (24) and core pins (23) are provided, wherein the housing pins (24) spring-loaded in the direction of the core (12), wherein further a keyway (13) is provided, in which a key ( 25, 25a) can be inserted, which positions the tumblers by means of its toothing or depressions, so that, in the case of a key (25, 25a) which is entitled, the dividing surfaces between the housing pins (24) and the core pins (23) at the interface between the core (12) and housing (11) lie; wherein in at least one Zuhaltungskanal between the housing pin (24) and the core pin (23) a Umstellelement (19, 26) is provided, so that there are two dividing surfaces and thus two different keys, namely a service key (25 a) and a user key (25) , the service key (25a) at the location of this tumbler is lower than the user key (25); wherein in the core (12) - offset in the circumferential direction of the core bore (21) of this Zuhaltungskanals - a recess (14) is provided, in which the Umstellelement (19, 26) is stored when the lock cylinder is locked with the user key (25), so that the service key (25a) loses its lock authorization; wherein in the core (12) an actuating element (16) is provided which reduces the depth of the recess (14) when actuated, so that with the actuating element (16) the Umstellelement (19) - when the recess (14) with the housing bore (22 ) of the corresponding Zuhaltungskanals - in the housing bore (22) is displaceable, so that the service key (25a) is entitled to block again, characterized in that the actuating element (16) in the core (12) is recessed and can be actuated by a special key. 3. Lock cylinder according to claim 1 or 2, characterized in that the Umstellelement is a ball (19) or a plate (26). 4. Lock cylinder according to one of claims 1 to 3, characterized in that the actuating element is a slide (16). 5. Lock cylinder according to claim 4, characterized in that the slide (16) is axially parallel to the core (12). 6. Lock cylinder according to claim 4 or 5, characterized in that the slide (16) is biased in the direction of the starting position by a spring (17). 7. Lock cylinder according to one of claims 4 to 6, characterized in that the slide (16) can be locked in the operating position. 8. Lock cylinder according to claim 7, characterized in that the lock can be released by a special key. 9. lock cylinder according to one of claims 1 to 3, characterized in that the actuating element is a rotor. 10. key (28) for a lock cylinder according to one of claims 1 to 9, characterized in that an integrated slide (30) is provided, with which the actuating element (16) of the lock cylinder is actuated. 11. Key according to claim 10, characterized in that the integrated slide (30) is equipped with a latching function at least in the extended position. For this 5 sheets of drawings