EP4047161A1 - Key, key and locking cylinder - Google Patents

Abstract

A key (1) for a lock cylinder (2) comprising a key handle (3) and a key shank (4) adjoining the key handle (3) and extending along a longitudinal axis (L), the key shank (4) on its outside (5th ) has control recesses, in particular control bores, for arranging tumblers on the lock cylinder (2), the key (1) further having at least one query surface (6) on the key side, with which the key (1) strikes a query surface (7) on the lock cylinder side, andwherein at least one of the key-side query surfaces (6a) is inclined at an angle of intersection (a) to a reference line (G) oriented parallel to the longitudinal axis (L).

Description

TECHNICAL AREA

The present invention relates to a key according to claim 1 and a combination of key and lock cylinder according to claim 10.

STATE OF THE ART

Security keys and lock cylinders of the type mentioned have become known in numerous designs. In the case of security keys for high-quality systems, it is essential that these cannot be easily copied on comparatively simple drilling and milling machines. A security key with a high copy security can according to the EP 0 621 384 B1 of the applicant can be achieved by providing the shank of the security key with a control element which is designed as a pin and is slidably mounted in the shank. This control element can be classified with an additional tumbler in the lock cylinder. Such a key cannot be copied with justifiable effort.

From the EP 1 523 603 a combination of security key and locking cylinder has become known. With the key according to the EP 1 523 603 the front extended end of the rotor and the rear end of the key shank are used to provide additional control surfaces. These control surfaces can be produced particularly inexpensively by indentations and in particular by slots in the extended front end of the rotor. The control surfaces on the security key are produced particularly inexpensively by means of recesses and, in particular, millings on the shoulders of the key shank. According to the technical teachings of EP 1 523 603 the position of a control surface arranged transversely to the central axis of the shaft must match the recess. Otherwise the correct interrogation of the key control bores is made impossible by incorrect axial spacing.

PRESENTATION OF THE INVENTION

The present invention is based on the object of specifying a key or a combination of a key with a lock cylinder which is improved over the keys from the prior art. In particular, it is an object of the present invention to specify a key which, in addition to the usual tumblers, has a further query element which is easy to use.

This object is achieved by a key for a lock cylinder according to claim 1. Accordingly, a key comprises a key handle and a key shank adjoining the key handle, which extends along a longitudinal axis. On its outside, the key shank has control recesses, in particular in the form of control bores, for arranging tumblers on the lock cylinder. The key also has at least one query surface on the key side, with which the key strikes a query surface on the lock cylinder side. Furthermore, at least one of the query surfaces on the key side is inclined at an angle of intersection to a straight reference line oriented parallel to the longitudinal axis.

By arranging a query surface at an angle of intersection with the said reference straight line, there is an advantage that a query surface can be provided that allows a more extensive query. The query is very simple and reduced to the essential features, which makes the key easy to use.

Furthermore, due to the arrangement of the query surface at an angle of intersection with the said reference line, security with regard to manipulation is increased, since the production of angularly inclined surfaces is too complex for a key copier.

In addition, an alternative to previous solutions is specified with the query surface at an angle of intersection with the said reference line.

In a first configuration, said query surface is always placed in the same position relative to the key shank in a set of keys. In this case, the interrogation surfaces on the locking cylinder side are arranged at different positions in a locking cylinder set. In a second configuration, in a set of keys, said query surface is placed at different locations relative to the key shank. In this case, the interrogation surfaces on the lock cylinder side are in a lock cylinder set arranged in different positions; or the interrogation surfaces on the lock cylinder side are arranged at the same positions in a lock cylinder set. These two configurations therefore have the advantage that the permutations can be changed as desired, in particular increased or decreased, depending on the choice of configuration.

The query area is pierced by the reference line. The angle between the query surface and the reference line is the claimed intersection angle. The angle of intersection also results as the difference between 90° and an angle between a surface normal to the query surface, which extends through the intersection between the query surface and the reference line, and said reference line.

The lock cylinder is preferably a rotary lock cylinder. The key is preferably designed as a reversible key.

The key strikes with the at least one key-side query surface against the lock cylinder-side query surface when the key shank is fully inserted in the key channel of the lock cylinder. If the key is intended for the lock cylinder, the key is in the correct position in the lock cylinder and the tumblers can be actuated. If the key is not provided for the lock cylinder, the key is not in the correct position in the lock cylinder and the tumblers cannot be actuated. Accordingly, the query surfaces also act as stop surfaces for the key.

In a first embodiment, two query surfaces are preferably arranged which are inclined at an angle of intersection, the query surfaces being arranged symmetrically with respect to a first reference plane which extends through the longitudinal axis and at right angles to the narrow side of the key shank.

This arrangement has the advantage that when the key is pushed in and in particular when the intended end position is set, the key is balanced with respect to the key channel.

The value of the angle of intersection of one query surface to the reference axis is the same as the value of the angle of intersection of the other query surface to the reference axis. Seen from the longitudinal axis, the two query surfaces run such that the distance between the two query surfaces increase with increasing distance in one direction and decrease with increasing distance in the other direction.

In another embodiment, the two angularly inclined sensing surfaces form a first pair of sensing surfaces, a second pair of sensing surfaces being symmetrically disposed with respect to a second reference plane extending through the longitudinal axis and perpendicular to said first reference surface. There are thus a total of four angularly inclined interrogation surfaces.

In another embodiment, two inclined query surfaces are arranged at an angle of intersection, said query surfaces being arranged mirror-symmetrically with respect to the longitudinal axis.

A further query surface is preferably arranged, which is oriented at right angles to the longitudinal axis or to the reference line. This further query surface is present in addition to the query surfaces arranged at an angle.

The further query surface preferably connects the query surfaces which are arranged at an angle at an angle of inclination to one another.

When several query surfaces are arranged, the surface normals of said query surfaces are preferably arranged in such a way that they lie in a common plane, with the plane running parallel to the longitudinal axis.

The further interrogation surface intersects the angled interrogation surfaces at a cutting edge, which cutting edge runs at right angles to and laterally spaced from the longitudinal axis.

This arrangement has the further advantage that said query surfaces can be produced very easily, for example with an end mill whose central axis is aligned transversely to the longitudinal axis. In particular, the query surfaces can be produced in one setting.

Preferably, the cutting angle is greater than 0° and less than 90°, in particular that the cutting angle is in the range from 30° to 60°.

The at least one query surface or surfaces are preferably at the rear arranged at the end of the key shank. In other words, the query surfaces are arranged in a transition area from the key shank to the key handle. A recess which extends into the key shank is preferably arranged between the key shank and between the query surfaces.

The at least one query surface or surfaces preferably extend outwards from the narrow side of the key shank.

The fact that the query surfaces extend outwards as seen from the key shank has the advantage that no incisions for the query surfaces have to be provided on the key shank, as a result of which the strength of the key is not adversely affected despite the function of the query surfaces that is gained for this purpose.

Preferably, the at least one query surface or surfaces are arranged laterally to the key axis in such a way that the query surfaces do not extend beyond the side surfaces of the key shank. The key is not widened by the query area. This has the advantage that the material thickness for the starting sheet metal material for key production can be used in the dimensions compatible with the key channel in the lock cylinder.

A lock cylinder and a key according to the above description are characterized in that the lock cylinder has a stator, a rotor which is mounted in the stator so that it can rotate about a central axis and has a key channel, with tumblers being provided between the stator and the rotor, which can be arranged through the control recesses on the key shank, and wherein the rotor has the at least one interrogation surface on the locking cylinder side.

The at least one interrogation surface on the lock cylinder side is provided for interrogating said interrogation surface arranged at the intersection angle to the reference straight line and/or for interrogating other interrogation surfaces arranged on the key.

The interrogation surface arranged on the rotor on the locking cylinder side works together with the interrogation surfaces mentioned arranged on the key. The interrogation surface on the locking cylinder side provides a stop for the stop surface on the key side. If the key is an authorized key acts, the key shank comes to lie in the key channel in the exact position relative to the tumblers and the tumblers can be classified. If it is an unauthorized key, the key shank will not be in the correct position and the tumblers cannot be classified.

Preferably, at least one interrogation surface arranged at the intersection angle of said at least one interrogation surface on the locking cylinder side is inclined at an angle of intersection to a reference line oriented parallel to the central axis. The interrogation surface on the locking cylinder side arranged in the intersection angle serves to interrogate the interrogation surface on the key side arranged in the intersection angle. The cutting angles on the key and on the lock cylinder are preferably of the same design.

Preferably, two of said query surfaces arranged at the intersection angle are arranged on the lock cylinder, the query surfaces being arranged symmetrically with respect to a reference plane which extends through the central axis and at right angles to the narrow side of the keyway.

Preferably, at least one query surface of said at least one query surface on the locking cylinder side is at right angles to a reference line oriented parallel to the central axis. This orthogonally oriented query surface works together with said further query surface of the key.

In a set of lock cylinders, there are preferably a first type of lock cylinder with at least one query surface arranged at the intersection angle and a further type of lock cylinder with at least one query surface oriented at right angles to the reference line. Said at least one interrogation surface of the lock cylinder arranged in the intersection angle works together with said at least one interrogation surface of the key arranged in the intersection angle and said at least one right-angled interrogation surface of the lock cylinder works together with said at least one other interrogation surface of the key.

Particularly preferably, the first type of lock cylinder does not have the further query surface and the second type of lock cylinder does not have the query surface arranged in the intersection angle. A locking system which is equipped with both types of locking cylinders and in which keys are present with the intersecting surface and with the additional query surface therefore has the advantage that the two types of locking cylinders can be operated with the same key, but cannot be operated for duplicate keys without the query surfaces. Such a locking system preferably includes a random distribution of locking cylinders of the first type and locking cylinders of the second type.

This means that different rotors are used in a set of locking cylinders, with the key-side query surfaces being queried differently by the different rotors.

The interrogation surfaces on the locking cylinder side preferably extend transversely to the central axis away from the key channel and into the front surface of the rotor.

The rotor preferably has a recess opposite the query surface with respect to the key channel.

Further embodiments are specified in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1

eine perspektivische Ansicht eines erfindungsgemässen Schlüssels 1 von der einen Seite;

Fig. 2

eine perspektivische Ansicht des Schlüssels gemäss Figur 2 von der anderen Seite;

Fig. 3

eine perspektivische Detailansicht des Schlüssels gemäss den vorhergehenden Figuren;

Fig. 4

eine Draufsicht eines Details des Schlüssels gemäss den vorhergehenden Figuren;

Fig. 5

eine perspektivische Ansicht eines Drehschliesszylinders zusammen mit dem Schlüssel gemäss den vorgehenden Figuren, wobei der Drehschliesszylinder gemäss einer ersten Art ausgeführt ist;

Fig. 6

eine perspektivische Ansicht eines Drehschliesszylinders mit einem Schlüssel nach den vorgehenden Figuren, wobei der Drehschliesszylinder nach einer zweiten Art ausgebildet ist;

Fig. 7

eine Detailansicht der Figur 5 ohne Schlüssel;

Fig. 8

eine Detailansicht der Figur 5 mit Schlüssel;

Fig. 9

eine Draufsicht auf dem Schliesszylinder gemäss Figur 5 ohne Schlüssel;

Fig. 10

eine Draufsicht auf den Schliesszylinder gemäss Figur 5 mit Schlüssel;

Fig. 11

eine Detailansicht der Figur 6 ohne Schlüssel;

Fig. 12

eine Detailansicht der Figur 6 mit Schlüssel;

Fig. 13

eine Draufsicht auf dem Schliesszylinder gemäss Figur 6 ohne Schlüssel; und

Fig. 14

eine Draufsicht auf den Schliesszylinder gemäss Figur 6 mit Schlüssel.

Preferred embodiments of the invention are described below with reference to the drawings, which are for explanation only and are not to be interpreted as restrictive. In the drawings show:

1

a perspective view of an inventive key 1 from one side;

2

according to a perspective view of the key figure 2 from the other side;

3

a perspective detailed view of the key according to the preceding figures;

4

a plan view of a detail of the key according to the previous figures;

figure 5

a perspective view of a rotary lock cylinder together with the key according to the previous figures, wherein the rotary lock cylinder is designed according to a first type;

6

a perspective view of a rotary lock cylinder with a key according to the preceding figures, wherein the rotary lock cylinder according to a second type is formed;

7

a detailed view of figure 5 without a key;

8

a detailed view of figure 5 with key;

9

according to a plan view of the lock cylinder figure 5 without a key;

10

according to a plan view of the lock cylinder figure 5 with key;

11

a detailed view of figure 6 without a key;

12

a detailed view of figure 6 with key;

13

according to a plan view of the lock cylinder figure 6 without a key; and

14

according to a plan view of the lock cylinder figure 6 with key.

DESCRIPTION OF PREFERRED EMBODIMENTS

In the Figures 1 to 4 different views of a key 1 according to an embodiment of the present invention are shown. In the Figures 5 to 14 the key according to the Figures 1 to 4 then shown in connection with a first type and a second type of rotary lock cylinder 2 according to an embodiment of the present invention.

Referring to the Figures 1 to 4 the embodiment of the key 1 will now be described. The key 1 comprises a key handle 3 and a key shank 4 adjoining the key handle 3. The key shank 4 extends along a longitudinal axis L. The key shank 4 has two narrow sides 8 spaced apart from one another and two broad sides spaced apart from one another 20 on. The two broad sides 20 connect the two narrow sides 8. The narrow side 8 is the narrow side and the broad side 20 is the wide side of the key 1. In the front area opposite the key handle 3, the key shank 4 has a key tip 21. Control recesses, in particular control bores, are typically arranged on the outside of the key shank 4 for arranging tumblers on the lock cylinder 2 . These control recesses are not shown. The control recesses typically extend over the narrow side 8 and the wide side 20 into the key shank 4 .

The key 1 also has at least one query surface 6 on the key side. The at least one query surface 6 is arranged in addition to the control recesses. With the at least one query surface 6, the key 1 strikes a query surface 7 on the lock cylinder side. About the stop between The insertion depth of the key shank 4 into the key channel 15 of the lock cylinder 2 is controlled by the query surface 6 on the key side and the query surface 7 on the lock cylinder side. With an authorized key 1, the key shank 4 protrudes into the key channel 15 with the correct depth and the control recesses can classify the tumblers accordingly. In the case of an unauthorized key, the control recesses on the key and the tumblers are offset with respect to the longitudinal axis L and the tumblers cannot be classified.

At least one of the key-side query surfaces is angularly inclined at an intersection angle α to a reference line G oriented parallel and spaced apart from the longitudinal axis L. In the embodiment shown, four query surfaces are arranged angularly inclined at an intersection angle α. These query surfaces bear the reference numbers 6a, 6b, 6c and 6d. Said key-side interrogation surfaces 6a, 6b, 6c, 6d are designed as flat surfaces. The query surfaces 6a, 6b, 6c, 6d are each at an angle at said intersection angle α to a reference line G that runs parallel and at a distance from the longitudinal axis L and is associated with the query surfaces 6a, 6b, 6c, 6d. The reference line G pierces the query surfaces 6a, 6b, 6c, 6d in the geometric sense. The reference lines G are in the Figures 3 and 4 shown accordingly.

In the figure 4 a plan view of the transition area from the key shank 4 to the key handle 3 is shown. The two query surfaces 6a, 6b are also shown here. The query surface 6a, 6b extend here at right angles to the drawing sheet surface. The reference lines G are shown as dashed lines. The intersection angle α is the angle which lies between the query surfaces 6a, 6b and the reference line G.

In other words, it can also be said that the key-side interrogation surfaces 6a, 6b, 6c, 6d are inclined at an angle α to the longitudinal axis L. Said query surfaces 6a, 6b, 6c, 6d are arranged at a distance from the longitudinal axis L, so that there is no actual intersection between the longitudinal axis L and the query surfaces 6a, 6b, 6c, 6d.

The intersection angle α is greater than 0° and less than 90° with respect to the respective query surfaces 6a, 6b, 6c, 6d. The cutting angle α is preferably between 30° and 60°. Other angles are also conceivable.

As already mentioned, several query areas 6a, 6b, 6c, 6d are arranged. In the embodiment shown, two query surfaces 6a, 6b, 6c, 6d inclined at an angle of intersection α are arranged in such a way that the query surfaces 6a, 6b are symmetrical with respect to a first reference plane R1, which extends through the longitudinal axis L and at right angles to the narrow side 8 of the key are arranged. The two query surfaces 6a, 6b inclined at an angle of intersection α are laterally spaced from the reference plane R1. The distance between the query surface 6a and the query surface 6b is the same on the left and right as seen from the reference plane R1.

In the embodiment shown, the two query surfaces 6a, 6b mentioned form a first query surface pair. With respect to a second reference plane R2, which extends through the longitudinal axis L and perpendicular to said reference plane R1, a second pair of sensing surfaces 6c, 6d is arranged symmetrically to the first pair of sensing surfaces. The second query surface pair 6c, 6d is symmetrical to the second reference plane R2.

In the embodiment shown, the query surfaces 6a, 6b, 6c, 6d mentioned are each perpendicular to the reference plane R2.

In another variant, not shown in the figures, it would also be conceivable that the query surfaces are not arranged in pairs, but that one query surface 6a and one query surface 6c are each arranged mirror-symmetrically to the longitudinal axis L.

In both variants, the key is designed as a reversible key.

In the embodiment shown, a further query surface 9 is arranged. The further query surface 9 is a query surface which is arranged in addition to the query surfaces 6a, 6b, 6c, 6d which are inclined at an angle α. In the embodiment shown, the further query surface 9 is oriented at right angles to the longitudinal axis L or at right angles to a reference line G, which runs parallel to the longitudinal axis L. The other query surface 9 is designed as a flat surface. In the embodiment shown, the further query surface 9 connects the query surfaces 6a, 6b and 6c, 6d which are arranged at an angle α and are inclined with one another. One query surface 9 is arranged here for each query surface pair 6a, 6b or 6c, 6d. A cutting edge 12 is present in the area of intersection of the further query surface 9 with the respective query surface 6a, 6b, 6c, 6d arranged at an angle at an angle of inclination α. The cutting edge 12 forms as a cutting line between the respective query surface 6a, 6b, 6c, 6d and the further query surface 9. The cutting edge 12 runs at right angles and at a lateral distance from the longitudinal axis L.

In the arrangement of several query surfaces, as shown in the figures, the query surfaces are preferably arranged in such a way that the surface normals of said query surfaces are each such that they lie in a common plane, the plane being parallel to the longitudinal axis and parallel to the one described above second reference plane R2 run.

In the embodiment shown, the query surfaces 6, 6b, 6c, 6d, 9 are each arranged at the rear end 10 of the key shank 4 at the transition to the key handle 4, i.e. opposite the key tip 29. The query surfaces 6a, 6b, 6c, 6d, 9 extend from the narrow side 8 of the key shank 4 to the outside. However, the query surfaces 6a, 6b, 6c, 6d, 9 do not extend outwards over the broad side. A recess 11, which extends into the key shank, is preferably arranged between the key shank and between the query surfaces.

In the figure 5 is a first type of a lock cylinder 2 and in the figure 6 a second type of lock cylinder 2 is shown. The two lock cylinders 2 of the first and second type differ in the different design of the interrogation surfaces 9 on the lock cylinder side. The tumblers of the lock cylinders can also be different. Otherwise, the two lock cylinders are identical.

The lock cylinder 2 comprises a stator 13, a rotor 14 rotatably mounted in the stator 13 about a central axis M and having a key channel 15. Furthermore, the rotor 14 has the at least one query surface 7 on the locking cylinder side. The at least one interrogation surface 7 on the locking cylinder side is arranged here in the end face of the rotor 14 and extends into the end face of the rotor 14 .

In the figures 5 and 7 to 10 the said first type of lock cylinder 2 is shown. The first type of lock cylinder 2 here includes two query surfaces 7a, 7b. Said query surfaces 7a, 7b are inclined at an angle of intersection β to a parallel to Central axis M oriented reference line G arranged. The intersection angle β essentially corresponds to the intersection angle α, so that the query surfaces 7a, 7b correspond to the query surfaces 6a, 6b, 6c, 6d.

The two query surfaces 7a, 7b arranged at the intersection angle β are arranged symmetrically with respect to a reference plane R, which extends through the central axis M and at right angles to the narrow side 19 of the key channel 15. The key 1 comes with it, as in the figure 8 and 10 shown, with its query surfaces 6a, 6b, 6c, 6d in surface contact with the query surfaces 7a, 7b of the lock cylinder 2.

In the embodiment shown, a recess 22 extends further from the query surfaces 7a, 7b in the direction of the central axis M into the rotor 14. This ensures that the contact between the query surfaces 6a, 6b, 6c, 6d on the key side and the query surfaces 7a, 7b on the lock cylinder side is ensured.

The two interrogation surfaces 7a, 7b on the locking cylinder side are arranged in such a way that their distance from one another becomes smaller as the distance from the front surface 23 increases. This creates good guidance for the key 1 during the insertion process. Furthermore, the interrogation surfaces 7a, 7b on the locking cylinder side are arranged symmetrically to the central axis M of the rotor, as a result of which no lateral forces act on the key 1.

In the figures 5 and 11 to 14 the said second type of lock cylinder 2 is shown. The second type of lock cylinder 2 here includes a query surface 16. The query surface 16 is perpendicular to a reference line G oriented parallel to the central axis M. The query surface 16 is designed in such a way that it works together with the other query surface 9 of the key 1 in a corresponding manner. The second query surface 9 is offset from the front surface 23 of the rotor 14 in the direction of the central axis M into the rotor 14 . Side faces 24 are arranged to the left and right of the query surface 9 , which are positioned in such a way that the key 1 can be advanced with its further query surface 9 up to the query surface 16 . The side surfaces 24 are preferably arranged in such a way that there is no contact with the interrogation surfaces 6a, 6b, 6c, 6d arranged at the intersection angle.

In a set of lock cylinders there are lock cylinders of the first type and Lock cylinder of the second type arranged. The interrogation surface 7a, 7b, which is arranged at an angle in the intersection angle, and the interrogation surface 16 are in such a way that the key 1 can be pushed into the key channel 15 with the same depth in both types.

in a set of lock cylinders 2 there is in each case a first type of lock cylinder 2 with at least one query surface 7, 7a, 7b arranged at the intersection angle and a second type of lock cylinder 2 with at least one query surface 16. The two types of locking cylinders 2 can be operated by the same key 1. The rotors 14 are designed differently between the two types of lock cylinders 2 . The rotors 14 differ with regard to the arrangement of the query surfaces 7a, 7b and 16. This means that said at least one query surface 7a, 7b of the lock cylinder 2 arranged at the intersection angle works with said at least one query surface 6a, 6b, 6c arranged at the intersection angle , 6d of the key 1 together and said at least one query surface 16 of the lock cylinder 2 works together with said at least one further query surface 9 of the key 1. REFERENCE LIST 1 key 18 recess 2 lock cylinder 19 narrow side 3 key handle 20 broadside 4 key shaft 21 key tip 5 outside 22 recess 6, 6a, 6b, 6c, 6d key-side query surface 23 front face 7, 7a, 7b query surface on the locking cylinder side a cutting angle β cutting angle 8th narrow side 9 further query area L longitudinal axis 10 rear end G reference line 11 recess R1 reference plane 12 cutting edge R2 second reference level 13 stator 14 rotor 15 key channel 16 query area 17 front face

Claims (16)

Key (1) for a lock cylinder (2) comprising a key handle (3) and a key shank (4) adjoining the key handle (3) and extending along a longitudinal axis (L), the key shank (4) having control recesses, in particular control bores, on its outside (5) for arranging tumblers on the lock cylinder (2), and the key (1) also having at least one query surface (6) on the key side, with which the key (1) strikes a query surface (7) on the lock cylinder side, characterized in that that at least one of the key-side query surfaces (6a) is inclined at an angle of intersection (a) to a reference line (G) oriented parallel to the longitudinal axis (L). Key (1) according to Claim 1, characterized in that two query surfaces (6a, 6b) inclined at an angle of intersection (a) are arranged, the query surfaces (6a, 6b) being relative to a first reference plane (R1) which extends through the longitudinal axis (L) and at right angles to the narrow side (8) of the key shank (4), are arranged symmetrically. Key (1) according to Claim 2, characterized in that the two query surfaces (6a, 6b) inclined at an angle of intersection (a) form a first query surface pair, with respect to a second reference plane (R2) which extends through the longitudinal axis (L) and perpendicular to said first reference surface (R1), a second pair of query surfaces (6c, 6d) are arranged symmetrically. Key (1) according to one of the preceding claims, characterized in that two inclined query surfaces (6a, 6c; 6b, 6d) angled at the intersection angle (a) are arranged, said query surfaces (6a, 6c; 6b, 6d) being relative to the Longitudinal axis (L) are arranged mirror-symmetrically. Key (1) according to one of the preceding claims, characterized in that a further query surface (9) is arranged, which is oriented at right angles to the longitudinal axis (L) or to the reference line (G). Key (1) according to Claim 5 and one of the preceding Claims 2 and 3, characterized in that the further query surface (9) connects the query surfaces (6, 6a, 6b, 6c, 6d) arranged at an angle at the intersection angle (a) with one another. Key (1) according to one of the preceding claims, characterized in that when several query surfaces (6, 6a, 6b, 6c, 6d, 9) are arranged, the surface normals of said query surfaces (6, 6a, 6b, 6c, 6d, 9th ) are each arranged so that they lie in a common plane, which plane is parallel to the longitudinal axis (L). Key (1) according to one of the preceding claims, characterized in that the cutting angle (a) is greater than 0° and less than 90°, in particular that the cutting angle (a) is in the range from 30° to 60°. Key (1) according to one of the preceding claims, characterized in that the at least one query surface (6, 6a, 6b, 6c, 6d) or the query surfaces (6, 6a, 6b, 6c, 6d, 9) at the rear end ( 10) of the key shank (4) and/or that the at least one query surface (6, 6a, 6b, 6c, 6d) or the query surfaces (6, 6a, 6b, 6c, 6d, 9) extend from the narrow side ( 8) of the key shank (4) extend outwards. Lock cylinder (2) and key (1) according to one of the preceding claims, characterized in that the lock cylinder (2) has a stator (13), a rotor (14) rotatably mounted in the stator (13) about a central axis (M) with a Key channel (15), wherein tumblers are provided between the stator (13) and rotor (14), which can be arranged through the control recesses on the key shank (4), and wherein the rotor (14) has at least one query surface (7) on the lock cylinder side . Lock cylinder (2) and key (1) according to Claim 10, characterized in that at least one query surface (7a, 7b) of said at least one query surface (7) on the lock cylinder side is inclined at an angle (β). to a reference line (G) oriented parallel to the central axis (M). Lock cylinder (2) and key (1) according to Claim 11, characterized in that two of said interrogation surfaces (7, 7a, 7b) arranged at the intersection angle are arranged, the interrogation surfaces (7, 7a, 7b) being relative to a reference plane (R) , which extends through the central axis (M) and at right angles to the narrow side (19) of the key channel (15), are arranged symmetrically. Lock cylinder (2) and key (1) according to one of Claims 10 to 12, characterized in that at least one query surface (16) of the said at least one query surface (7) on the locking cylinder side is perpendicular to a reference line (G) oriented parallel to the central axis (M). stands. Lock cylinder (2) and key (1) according to Claims 12 and 13, characterized in that in a set of lock cylinders (2) there is a first type of lock cylinder (2) with at least one query surface (7, 7a, 7b) and another type of locking cylinder (2) with at least one query surface (16) oriented at right angles to the reference line (G). Lock cylinder (2) and key (1) according to Claim 14, characterized in that said at least one interrogation surface (7, 7a, 7b) of the lock cylinder (2) arranged at the intersection angle works with said at least one interrogation surface (6 , 6a, 6b, 6c, 6d) of the key (1) together and said at least one rectangular query surface (16) of the lock cylinder (16) works together with said at least one further query surface (9) of the key (1). Lock cylinder (2) and key (1) according to one of the preceding claims 10 to 15, characterized in that the query surfaces (7, 16) on the lock cylinder side extend transversely to the central axis (M) away from the key channel (15) and into the front surface (17) of the rotor (14) extend inside.

Images