EP3280855A1

EP3280855A1 - Key and rotary lock cylinder

Info

Publication number: EP3280855A1
Application number: EP16715320.4A
Authority: EP
Inventors: Daniel WITTICH; Detlef Sprenger; Thomas Wild
Original assignee: Assa Abloy Schweiz AG
Current assignee: Assa Abloy Schweiz AG
Priority date: 2015-04-10
Filing date: 2016-04-08
Publication date: 2018-02-14
Anticipated expiration: 2036-04-08
Also published as: WO2016162531A1; EP3280855B1

Abstract

The invention relates to a key (1) for a rotary lock cylinder (2), comprising a key grip (3) and a key shaft (4) which adjoins the key grip (3) and extends along a longitudinal axis (L), wherein the key shaft (4) has control recesses (6), in particular control bores, on its outside (5) for properly positioning tumblers on the rotary lock cylinder (2) and also has at least one control element (7) which is movably arranged in the key shaft (4), said control element (7) having a control surface (9) which interacts with a tumbler (8) of the rotary lock cylinder (2). The key shaft (4) has a recess (10) which is designed in such a way that a manipulation element (11) of the rotary lock cylinder (2) can act on the control element (7) via the recess (10) when the key (1) is inserted into the rotary lock cylinder, such that the control element (7) is movable with respect to the key shaft (4) and the tumbler (8) can be brought into the release position.

Description

TITLE

Key and rotary lock cylinder

TECHNICAL FIELD The present invention relates to a key according to the preamble of claim 1 and a rotary key cylinder with the key according to the preamble of claim 13.

PRIOR ART EP 0 621 384 discloses a key with a suitable rotary lock cylinder. In the shaft of the key, a control is arranged, which cooperates with an additional locking of the rotor.

Although the keys and rotary lock cylinders according to EP 0 621 384 are considered to be particularly tamper-resistant, it is a need of many to further increase the security against copying such a key or rotary lock cylinder by further increasing the security of the query. Another disadvantage of EP 0 621 384 is that the permutation possibilities are limited. PRESENTATION OF THE INVENTION

Based on this prior art, the invention has for its object to provide a key which overcomes the disadvantages of the prior art. In particular, the key should offer greater security with regard to manipulation attempts. In addition, preferably the copy security of such a key should be further increased.

This task triggers a key according to claim 1. Accordingly, includes a key for a rotary lock cylinder, a key handle and a key shank adjoining the key handle, which extends along a longitudinal axis. The key shank comprises on its outer side control recesses, in particular control bores, for the arrangement of tumblers on the rotary-key cylinder and at least one control element movably arranged in the key shank, which control element has a control surface co-operating with a tumbler of the rotary-key cylinder. The key shank has a recess, which is designed such that an arrangement element of the rotary lock cylinder can act on the control by the recess during insertion of the key in the rotary lock cylinder, such that the control element with respect to the key shank is movable and the tumbler can be brought into the release position is.

By the arrangement element so the control can be moved and by the movement of the control in the key then the corresponding tumbler can be arranged in the rotary lock cylinder. Here, the guard is moved from a locked position to the release position. The control establishes a functional contact between the arrangement element and the tumbler for the purpose of their classification. This functional contact can increase safety. Preferably, the control of the key is movable by cooperation with the Einordnungselement to classify a tumbler of the rotary lock cylinder from a starting position with respect to the key shaft to the outside in a Einordnungslage. The control is thus moved out of the key shaft and protrudes in the Einordnungslage preferably in the rotary lock cylinder.

Preferably, the control element is as far forward, so far away from the key handle, arranged so that the weakening of the key cross section through the recess and the control remains as small as possible. The control element preferably has an inner control surface opposite the control surface, which cooperates with the said arrangement element of the rotary-lock cylinder. The ordering element interacts with the control via the inner control surface. The inner control surface protrudes at least in the starting position in the recess.

Particularly preferably, the recess extends from the tip of the key shank in the direction of the longitudinal axis in the key shank. During the insertion of the key into the keyway, the recess is moved relative to the arrangement element and thus the latter is received by the recess.

Preferably, the recess extends from the outside of the key shank into the key shank. Particularly preferably, the recess is open from the broad side of the key shank. In this way, a particularly good access can be created for the classification element under the condition of the smallest possible weakening of the key cross-section.

The recess can be milled, for example.

Preferably, the recess has a groove, wherein the groove, viewed transversely to the longitudinal axis, preferably has a constant cross section. The groove may also have a variable cross-section, for example in the form of a trapezoid. The groove extends from the tip of the key shank all the way to the control. When inserting the groove is guided along the Einordnungselementes.

The recess and the control are vorzuweise arranged in the region of the tip of the key shank. For example, in an area which corresponds to approximately 1/3 of the total length of the key shank. However, the control element is particularly preferably arranged immediately after the tip of the key shaft. That is, the control is, as seen from the key tip ago, arranged vorstest in the region of the key shank, which has a constant cross-section. The control is therefore preferably directly at the transition between the key tip and key shank. By arranging at the foremost possible location, a larger area can be provided for the arrangement of control bores in the key shank, whereby the permutation can be increased.

Particularly preferably, the recess is arranged offset to a center plane, which Middle plane is located centrally to the two narrow sides of the key shank. As narrow sides of the sides of the key shank are defined, which are viewed transversely to the longitudinal axis of the narrowest. Depending on the depth, however, the recess can also be located centrally between the two narrow sides of the key shank.

In a particularly preferred development, a respective recess is arranged on each broad side of the key shank. Broad sides are defined as the sides of the key shank that are widest across the longitudinal axis. The arrangement of two recesses, the key can be designed as a reversible key.

Particularly preferred is exactly one control on the rotary lock cylinder available. The two recesses are arranged such that, depending on the position of the key in the rotary locking cylinder, the one recess or the other recess cooperates with the control.

Alternatively, there is one control per recess. However, the number of controls preferably corresponds to the number of arrangement elements on the rotary lock cylinder. Alternatively, more than one control per recess may be present.

Preferably, the depth of the recess corresponds to a maximum of half the thickness of the key shank viewed at right angles to the broad side of the key shank. As a result, the key shaft is not weakened unnecessarily.

In a particularly preferred embodiment, the control is arranged in a bore in the key shaft, wherein the recess opens into the bore. This allows the Einordnungselement protrude through the recess in the hole.

Preferably, a bore extends from one of the narrow sides into the key shank and a further bore extends from the other of the narrow sides into the key shank, with one recess in each case one of the holes opens. This configuration is advantageous in reversible keys. Per hole is advantageously provided a recess.

Preferably, the control comprises a arranged in a bore or in the key bolt and spring element, in particular a compression spring which spring element acts on the bolt with a force that pushes the control from the key shaft seen inward, wherein the bolt said control surface or having said control surfaces. The bolt is preferably arranged such that the control surface for the arrangement of the tumbler is flush with the outside of the key shaft, while the inner control surface is located inside the bore, such that the locating element can act on it. Preferably, two controls are arranged by means of a respective bolt in the key, which extend along a common axis. Preferably, each one of the bolts is arranged by an arrangement element. This means that only one arrangement element and only one to be classified with the control tumbler are present, but advantageously two controls on the key are present, whereby the orientation of the key in the key channel does not matter. The key is, as mentioned, a reversible key.

Alternatively, each of the bolts can be arranged by a respective arrangement element.

Preferably, there is a gap between the bottom of the bore and the inner control surface, in which the Einordnungselement when inserting the key in the rotary lock cylinder, can intervene. The inner control surface is preferably spaced from the bottom of the bore, whereby the said gap can be provided.

Particularly preferably, the one step and the bolt has a survey, wherein the bolt in the initial position due to the spring element with the survey is pressed against the step and wherein the step and the elevation are arranged so that said gap is created. The step forms a stop for the elevation, so that the bolt can penetrate as far as it will go into the bore. Preferably, the bolt between the boss and the inner control surface is shorter than the depth of the bore between step and ground. Thereby, the said gap for contact with the guide surface of the Einordnungselementes be provided. Preferably, the bolt has a cylindrical, in particular circular, cross-section.

Preferably, the control surface for cooperation with the tumbler in the starting position is flush with the outside of the key shank. In the arrangement position, the control surface is spaced from the outside of the key shaft.

Next, with claim 13, a rotary lock cylinder and a key given above description. The rotary lock cylinder is actuated with the key as described above. The rotary lock cylinder comprises a stator, a rotatably mounted rotor in the stator with a keyway, which extends along a longitudinal axis, and at least one cooperating with the control tumbler. The tumbler comprises a stator pin mounted in the stator with a stator spring and a rotor pin mounted in the rotor, wherein the rotor pin and stator pin can be arranged by the control in the key from a locked position into a release position. The stator spring pushes the stator pin and the rotor pin in the direction of the keyway. The rotary-locking cylinder further comprises at least one arrangement element projecting into the key channel for cooperation with the said control element.

By means of the arrangement element, the control is moved, which then leads to a suitable key for the correct classification of said tumbler.

The arrangement element is preferably arranged stationarily in the keyway. Alternatively, the arrangement element is movably arranged in the key channel, wherein the placement element is sprung, for example, with a spring. However, the movable arrangement element is arranged such that it is aligned in orientation with the recess in the key. In addition, the rotary lock cylinder may include further tumblers, which cooperate with the control recesses.

Preferably, the placement member comprises a placement surface which cooperates with said inner control surface. The placement surface protrudes into the recess and ensures that the control is pressed outwards.

Regardless of the mobility of the Einordnungselementes the latter is preferably arranged in the key channel, that the orientation of the Einordnungsfläche but is fixed. Preferably, the placement surface is parallel to the longitudinal axis.

Preferably, exactly one single arrangement element is arranged. This one arrangement element then cooperates with said control element. Alternatively, two ordering elements are arranged opposite each other with respect to the key channel, and then there are two controls in the key.

Preferably, the arrangement element further comprises a guide surface, which is formed inclined at an angle to the longitudinal axis and which lies with respect to the insertion direction of the key in front of the placement surface. By the guide surface, the control can be moved to the height of the guide surface.

Preferably, the distance seen at right angles to the longitudinal axis between the placement surface and the parting line between the rotor and stator corresponds to the distance between the inner control surface and the contact point between the rotor pin and the stator pin. Preferably, the rotor pin and the stator pin of the locking position in the release position are radially outwardly movable.

Further embodiments are given in the dependent claims. BRIEF DESCRIPTION OF THE DRAWINGS

Preferred embodiments of the invention will be described below with reference to the drawings, which are given by way of illustration only and are not to be interpreted as limiting. In the drawings show:

Fig. 1 is a perspective view of a key and a

Rotary lock cylinder according to an embodiment of the present invention;

Fig. 2 is a perspective view of the key of Figure 1 and a

Rotary lock cylinder according to another embodiment of the present invention;

Fig. 3a is a schematic partial sectional view of the key and a rotary lock cylinder according to Figures 1 and 2, wherein the key is partially inserted into the rotary lock cylinder;

3b is a detail view of Figure 3a;

3c is a perspective detail view of Figure 3a;

4a is a schematic partially sectioned view of a key and a rotary lock cylinder according to an embodiment of the present invention

Invention, wherein the key is inserted further into the rotary lock cylinder;

4b is a detail view of Figure 4a;

4c is a perspective detail view of Figure 4a;

Fig. 5a is a schematic partial sectional view of a key and a rotary lock cylinder according to an embodiment of the present invention, wherein the key is fully inserted into the rotary lock cylinder;

Fig. 5b is a detail view of Figure 5a; and

5c shows a perspective detail view of FIG. 5a.

DESCRIPTION OF PREFERRED EMBODIMENTS In FIGS. 1 and 2, a key 1 for a rotary locking cylinder 2 is shown. The rotary lock cylinder 2 is shown only partially here in both figures. The key 1 is identical in both figures. The rotary lock cylinder 2 is formed in the figure 1 according to an embodiment and in the figure 2 according to another embodiment.

With reference to FIGS. 1 and 2, the key 1 according to an embodiment of the present invention will now be explained. Its function will be described in more detail below with reference to the figures 3 a to 5c.

The key 1 comprises a key grip 3 and a key shank 4 adjoining the key grip 3. The key shank 4 extends along a longitudinal axis L. On its outside 5, the key shank 4 has control recesses 6. These control recesses 6 are formed here as control bores and serve the classification of tumblers on the rotary lock cylinder 2. Furthermore, the key 1 comprises at least one in the key shank 4 movably arranged control element 7. Here, two controls 7 are arranged. The control element 7 also serves to classify a tumbler 8 of the rotary lock cylinder 2. For this purpose, the control element 7 has a control surface 9 which cooperates with the tumbler 8 in the rotary lock cylinder.

Next, the key shank 4 has a recess 10. The recess 10 is formed such that an arrangement element 11 of the rotary lock cylinder 2 can act on the control 7 through the recess 10 during insertion of the key 1 in the rotary lock cylinder 2 in such a way that the control element 7 with respect to the key shank 4 by the arrangement element 11 movable is. When inserting the key 1 in the rotary lock cylinder while the Einordnungselement 11 of the rotary lock cylinder extends into the recess 10 and presses the control element 7 with respect to the key shank 4 to the outside, so that the tumbler 8 is classified accordingly.

The control 7 is thus by cooperation with the Einordungselement 11 for the classification of the tumbler 8 of the rotary lock cylinder 2 from a starting position in moved a classification situation. The movement from the starting position into the arrangement position takes place with respect to the key shaft to the outside. In the initial position, the control element 7 is preferably located completely inside the key shank 4. In the arrangement position, the control element 7 protrudes partially out of the key shank 4, so that the tumbler 8 can be arranged accordingly.

The control element 7 has an inner control surface 12 with respect to the said control surface 9, which serves to position the tumbler 8. This inner control surface 12 cooperates with said arrangement element 11 of the rotary-lock cylinder 2. Via this inner control surface 12, the arrangement element 11 comes into contact with the control element 7 and the control element 7 is moved outwards.

The recess 10 extends, as shown in Figures 1 and 2, from the top 13 of the key shank 4 in the direction of the longitudinal axis L along the key shank 4. The recess penetrates from the outside 5 in the key shank 4 inside. The recess is thus formed open to the outside 5 of the key shank 4. The recess 10 extends from the key tip 13 up to the control element 7. In FIGS. 3b, 4b and 5b, the recess 10 is also shown. The recess 10 is preferably a groove, wherein the groove seen transversely to the longitudinal axis L has a constant cross-section. The groove is preferably made as a milling.

The recess 10 is arranged offset to a center plane E. The median plane E is centered between the two narrow sides 14 of the key shank 4. The staggered arrangement can be arranged on each broad side 15 of the key shank 4 each have a recess 10 without the key shank 4 would be greatly weakened mechanically. As a result, a reversible key can be created. Preferably, the control element 11 is as far forward, so as far as possible away from the key handle 3, so that the weakening of the key cross-section remains marginal. The narrow side 14 of the key shank 4 here is the narrow side with respect to an extension seen transversely to the longitudinal axis L. The broad side 15 is the wider side of the key shank 4. Here are two narrow sides 14 opposite and are connected by two broad sides 15 with each other.

The depth of the recess 10 seen at right angles to the broad side 15 of the key shank preferably corresponds to a maximum of half the thickness of the key shank 4. The depth can also be smaller. The control element 7 is arranged in a bore 16 in the embodiment shown. The bore 16 extends here from the narrow side 14 in the key shank 4 and extends substantially perpendicular to the longitudinal axis L. The recess 10 opens, as shown in Figures 1 and 2, in the bore 16. Consequently, the arrangement element 11 can protrude into the bore 16 via the recess 10.

The control element 7 comprises a bolt 17 arranged in the bore 16 in the key 1 and a spring element 18. The spring element 18 presses the bolt 17 into the key shank 4. The spring element 18 acts on the bolt 17 with a force which presses the control element 7 inward from the key shaft 4. By the arrangement element 11 of the bolt 17 is pressed against the spring force outwards in the Einordnungslage.

The bolt 17 comprises the control surface 9 and the inner control surface 12. The bolt 17 and the spring element 18 are held in the bore 16 with a securing ring 33. The locking ring 33 is pressed into the bore 16.

In the embodiment shown, two controls 7 are arranged. Each of the control elements 7 comprises a bolt 17 and a spring element 18 and a securing ring 33. The two control elements 7 extend along a common axis A. Both control elements 7 are accessible via the opposite narrow sides 14. Between the bottom 19 of the bore 16 and the inner control surface 12, a gap 20 is present. In this intermediate space 20 projects the Einordnungselement 11 during insertion of the key 1 in the rotary lock cylinder. The intermediate space 20 can be recognized particularly well in FIGS. 3b and 3c. Due to the gap 20, the cooperation between the arrangement element 11 and control 7 is facilitated.

With reference to Figures 3b and 3c, the bore 16 and the bolt 17 will now be explained in more detail. The bore 16 has a step 21. The bolt 17 further has a survey 22, wherein the bolt 17 is pressed in the initial position due to the spring element 18 with the survey 22 against the step 21. The step 21 and the elevation 22 are preferably arranged such that said gap 20 is created in the region of the bottom 19 of the bore 16. The bolt 17 is formed slightly shorter than the depth of the bore between the step 21 and the base 19 between the elevation 22 and the inner control surface 12.

The bolt 17 is preferably a cylindrical bolt with a circular cross-section. The control surface 9 is, as shown in the figures, preferably arranged such that it is flush in the initial position to the outside 5 of the key shank 4. In the present embodiment, the control surface 9 is thus in the same plane as the narrow side 14. Referring to Figures 3a to 3c, the rotary lock cylinder 2 is now explained in more detail. The rotary lock cylinder 2 comprises a stator 23 and a rotor 24 rotatably mounted in the stator 23 with a key channel 25. The keyway 25 extends along its longitudinal axis L. Furthermore, the rotary lock cylinder 2 comprises at least one cooperating with the control element 7 tumbler 8. In addition, the Rotary lock cylinder further tumblers, which cooperate with the control recesses 6.

The tumbler 8 comprises a stator pin 26, which is mounted in the stator 23, and a Rotor pin 27 which is mounted in the rotor 24. Rotor pin 27 and stator pin 26 can be classified by the control element 7 from the blocking position, as shown in Figure 3 c, in a release position, as shown in Figures 5a to 5c. In the release position, the contact point 31 between the rotor pin 27 and stator pin 26 is at the level of the parting line 30 between the rotor pin 27 and the stator pin 26. Consequently, the rotor 24 can be rotated to the stator 23.

The rotary locking cylinder 2 further comprises at least one projecting into the keyway 25 Einordnungselement 11. The classification element 11 is, as already explained above, for cooperation with the said control element 7. By the arrangement element 11, the control element 7 with respect to the key shank 4 moves outwards and orders so the stator 26 and the rotor pin 27 accordingly, so that they are pushed with their contact point 31 on the parting line 30. The sequence for the placement of the tumbler 8 is as follows: The key 1 is inserted with its key shank 4 in the keyway 25. In the figures 3a to 3c, the key is shown in the partially inserted state. The arrangement element 11 engages in the recess 10 a. In FIGS. 4a to 4c, the first contact between the arrangement element 11 and the control element 7 is shown. The arrangement element 11 cooperates with the control surface 12 of the control element 7 and presses when inserting the key 1 in the keyway 25, the control element 7 by cooperation with the guide surface 29 transversely to the central axis M outwards, ie in the direction of the rotor 24. This movement is in 4b with the arrow C shown. On the basis of Figure 4b can be well recognized that the control element 7 is moved further outwards, when the key 1 is moved further in the keyway 25. In FIG. 5b the arrangement position is then shown. Here is the control 7 with its control surface 12 on the Einordnungselement 11 and thus is in its Einordnungslage. Rotor pin 27 and stator pin 26 are in the release position. The contact point 31 between the rotor pin 27 and the stator pin 26 is at the height of the dividing line 30 between the rotor 24 and the stator 23. The rotor 23 can then be rotated relative to the stator 23.

When removing the key 1 then the control 7 due to the effect of Spring element 18 is moved back into its bore 16 and equally leave the stator 26 and the rotor pin 27, the release position in the direction of the locking position. For this purpose, the two pins 26 and 27 are pushed inwardly due to the stator spring 32.

With reference to FIGS. 3 a to 5 c, further properties of the arrangement element 11 will now be explained in more detail.

The placement element 11 comprises a placement surface 28, which cooperates with said inner control surface 12. The arrangement surface 28 is oriented here parallel to the longitudinal axis L. In the arranged state, the control surface 12 is in surface contact with the arrangement surface 28.

Furthermore, the arrangement element 11 comprises a guide surface 29, which is formed inclined at an angle to the longitudinal axis L. The guide surface 29, which can be well recognized in FIG. 4b, is inclined at an angle to the longitudinal axis L, such that the control element 7 is moved from its initial position into the arrangement position.

The control element 7 has in the region of the control surface 12 on a chamfer 34, which is also formed at an angle. By this chamfer 34, the classification can be solved even easier.

In the present case, exactly one arrangement element 11, which protrudes into the keyway 25, is arranged. The arrangement element 11 cooperates with the control element 7 in the key. Alternatively, two arrangement elements 11 can be arranged, which are arranged with respect to the keyway 25 with respect to each other. In this case, both controls 7 can classify corresponding tumblers. The distance D2 perpendicular to the longitudinal axis L seen between the Einordnungsfläche 28 and the parting line 30 between the rotor 24 and stator 23 corresponds to the distance Dl between the inner control surface 12 and the contact point 31 between the rotor pin 27 and stator 26th By varying the distances Dl and D2 as well as by the placement of the arrangement surface 28, the combinatorics can be increased. Furthermore, it can be clearly recognized from FIGS. 3b, 4b and 5b that the diameter of the stator pin 26 and the rotor pin 27 is greater than the diameter of the control element 7 in the key shank 4. In this way, the path along the longitudinal axis L between the first contact between the arrangement element 11 / control element 7 and the actual end position of the cooperation arrangement element 11 / control 7 are optimized. In the optimum case, the longitudinal path along the central axis A for the complete stroke movement of the control element 7 corresponds to the diameter of the bore 40 minus the diameter of the control element 7, starting when the control element 7 touches the placement element 11 and ideally the diameter end of the control element 7 in the direction of the key grip 3 on the same position transverse to the central axis M is like the rear edge 36 of the bore 16th

The Emordnungselement 11 is preferably pressed firmly into a bore 35. In this case, the arrangement element 11 is oriented such that the placement surface is oriented parallel to the longitudinal axis L. This is shown in FIG. Alternatively, the arrangement element 11 may also be arranged to be movable. In the figure 2, the alternative is shown. Here, the arrangement element 11 is spring-mounted with a spring 37. The arrangement element 11 and the spring 37 are held by a bolt 38 in a bore 39 in the rotor. Now, if a key without a recess inserted, the placement element 11 is moved out of the keyway addition. The assignment 8 is then not arranged. However, both embodiments of the arrangement element 11 are such that the placement surface 28 is preferably oriented parallel to the center axis M. LIST OF REFERENCE NUMBERS

Key 30 dividing line

Rotary lock cylinder 31 contact point

Key grip 32 Stator spring

Key shank 33 circlip

Outside 34 chamfering

Control recesses 35 Bore for fixed

Control item.

Tumbler 36 rear edge

Control surface 37 spring

Recess 38 bolts

Arrangement element 39 Hole for movable

Control surface arrangement element

Key tip 40 Bore for rotor pin

Narrow side A axis

Broadside E mid-plane

Bore L longitudinal axis

Bolt M central axis

spring element

reason

gap

step

survey

stator

rotor

keyway

Statorstift

rotor pin

classification area

guide surface

Claims

1. key (1) for a rotary lock cylinder (2) comprising

a key handle (3) and

a key shaft (4) adjoining the key grip (3) and extending along a longitudinal axis (L),

wherein the key shank (4) on its outer side (5) control recesses (6), in particular control bores, for the arrangement of tumblers on the rotary lock cylinder (2) and at least one in the key shank (4) movably arranged control element (7), which control (7) a control surface (9) cooperating with a tumbler (8) of the rotary lock cylinder (2), characterized

in that the key shank (4) has a recess (10) which is designed such that an arrangement element (11) of the rotary lock cylinder (2) passes through the recess (10) during insertion of the key (1) into the rotary lock cylinder (2) Control element (7) can act, such that the control element (7) with respect to the key shank (4) is movable and the tumbler (8) can be brought into the release position.

2. key (1) according to claim 1, characterized in that the control element (7) of the key (1) by the cooperation with the Einordnungselement (11) for the arrangement of a tumbler (8) of the rotary lock cylinder (2) from a starting position with respect to Key shank (4) to the outside in an arrangement position is movable.

3. Key (1) according to any one of the preceding claims, characterized in that the control element (7) relative to said control surface (9) has an inner control surface (12) which cooperates with said arrangement element (11) of the rotary lock cylinder (2) ,

4. key (1) according to any one of the preceding claims, characterized in that the recess (10) from the top (13) of the key shank (4) in the direction the longitudinal axis (L) in the key shaft (4).

5. key (1) according to any one of the preceding claims, characterized in that the recess (10) from the outer side (5) of the key shank (4) in the key shank (4) extends into it, in particular such that the recess to the Broad side (15) of the key shank (4) is open.

6. key (1) according to any one of the preceding claims, characterized in that the recess (10) is a groove, wherein the groove transversely to the longitudinal axis (L) seen preferably has a constant cross section, or wherein the groove transverse to the longitudinal axis (L ) preferably has a variable cross section.

7. key (1) according to any one of the preceding claims, characterized in that the recess (10) offset from a center plane (E) is arranged, which

Middle plane (E) is located centrally to the two narrow sides (14) of the key shank (4), and / or

in that a respective recess (10) is arranged on each broad side (15) of the key shank (4)

and or

that the depth of the recess (10) seen at right angles to the broad side (15) of the key shank (4) corresponds to a maximum of half the thickness of the key shank (4).

8. key (1) according to any one of the preceding claims, characterized in that the control element (7) in a bore (16) in the key shank (4) is arranged, wherein the recess (10) in the bore (16) opens.

9. key (1) according to claim 8, characterized in that a bore (16) of one of the narrow sides (14) hineinerstreckt into the key shank (4) and that a further bore (16) from the other of the narrow sides (14 ) hineinerstreckt into the key shank (4), wherein in each case a recess (10) in each case one of the bores (16) opens.

10. key (1) according to any one of the preceding claims 8 to 9, characterized in that the control element (7) in a bore (16) in the key (1) arranged bolt (17) and spring element (18), in particular a compression spring , which urges the bolt (17) with a force which presses the control element (7) inwardly from the key shank (4), the bolt (17) comprising the said control surface (9) and the control surfaces (9) , 12).

11. key (1) according to claim 10, characterized in that two control elements (7) each having a bolt (17) are arranged, which extend along a common axis (A).

12. A key according to any one of claims 8 to 11, characterized in that between the bottom (19) of the bore (16) and the inner control surface (12) has a gap (20) is present, in which the arrangement element (11) during insertion of the key (1) in the rotary lock cylinder, can intervene.

13. Rotary lock cylinder (2) and key (1) according to one of the preceding claims, characterized in that the rotary lock cylinder (2)

a stator (23),

a rotor (24) rotatably mounted in the stator (23) with a keyway (25) extending along a longitudinal axis (L), and

comprises at least one tumbler (8) cooperating with the control element (7),

wherein the tumbler (8) comprises a stator pin (26) mounted in the stator (23) with a stator spring (32) and a rotor pin (27) mounted in the rotor (24), the rotor pin (27) and stator pin (26) passing through the control element (7) from a locked position into a release position can be arranged, and wherein the rotary lock cylinder (2) further at least one in the keyway (25) projecting Einordnungselement (11) for cooperation with said control element (7).

14. Rotary lock cylinder (2) according to claim 13, characterized in that the arrangement element (11) comprises a placement surface (28) which cooperates with said inner control surface (12).

15 rotary lock cylinder (2) according to one of claims 13 to 14, characterized in that exactly one single arrangement element (11) is arranged, or that two arrangement elements (11) with respect to the keyway (25) are arranged opposite each other.

16. Rotary lock cylinder (2) according to one of claims 13 to 15, characterized in that the arrangement element (11) further comprises a guide surface (29) which is formed inclined to the longitudinal axis (L) and which with respect to the insertion direction of the key (1 ) in front of the placement surface (28).

17. Rotary lock cylinder (2) according to any one of claims 13 to 16, characterized in that the distance (D2) at right angles to the longitudinal axis (L) seen between the Einordnungsfläche (28) and the parting line (30) between the rotor (24) and stator ( 23) corresponds to the distance (D1) between the inner control surface (12) and the contact point (31) between the rotor pin (27) and the stator pin (26).

18. Rotary lock cylinder according to one of claims 13 to 17, characterized in that

the rotor pin (27) and stator pin (26) are movable radially outward from the blocking position in the release position and / or

in that the stator pin (26) in the stator (23) is acted upon by a spring force (32) by a spring, the spring force pressing the stator pin (26) and the rotor pin (27) in the direction of the key channel (25).