EP4045743B1 - Cylinder lock and locking device - Google Patents

Description

The invention relates to a cylinder lock and a locking device according to the preambles of the independent claims.

From the prior art, cylinder locks are known with a cylinder core that can be rotated in a housing about an axis of rotation D, comprising a key channel running in a radial plane R for inserting a coded key. Furthermore, such cylinder locks are known in which, in addition to the conventional core and housing pins running in the radial plane R, further core pins are provided which run in a core pin guide on the side of the key channel, i.e. outside the radial plane R. For example, the publication shows EP 2 886 754 A2 such a cylinder lock. Furthermore, the publication shows EP 0 557 606 A1 a cylinder lock with an additional core pin that runs essentially normal to the radial plane R but is centrally arranged. Further generic cylinder locks with core pin guides extending outside the radial plane R are from the publications US 5,819,566 A as well as EP 2 536 902 A1 known.

However, the disadvantage of such cylinder locks is that the core pins running outside the radial plane R have to be moved a long distance due to their eccentric positioning relative to the cylinder core in order to protrude sufficiently into the housing so that a secure locking effect can occur. The further the core pin is offset from the axis of rotation D, the further it must be moved by the key in order to ensure sufficient extension into the housing. Consequently, such core pins can only be actuated with comparatively large increments on the key, which means that the number of variations on the key is small.

The object of the invention is to overcome the disadvantages of the prior art. In particular, it is the object of the invention to create a cylinder lock in which a sufficient locking effect can be achieved even through small steps on the key. The object of the invention is, among other things, to create a cylinder lock which is as simple as possible and can be produced inexpensively.

The object according to the invention is solved by the features of the independent patent claims.

A cylinder lock according to the invention comprises a cylinder core which can be rotated in a housing about an axis of rotation D, comprising a key channel running in a radial plane R for inserting a coded key.

At least one core pin guide extending outside the radial plane R is provided on one side of the key channel. This can be a substantially cylindrical bore or the like.

A core pin is provided in the core pin guide, which can be moved along its longitudinal axis in the core pin guide from a blocking position to a release position. The core pin is designed in such a way that the rotation of the cylinder core relative to the housing is released when a key assigned to the cylinder lock is inserted into the key channel. This can be achieved by forming a substantially cylindrical gap (also referred to as a dividing plane) between the cylinder core and the housing, which the core pin blocks or releases depending on the coding of the key. The core pin can be preloaded in the core pin guide by a spring; However, this is not mandatory.

The core pin is preferably of essentially cylindrical shape and comprises a core side pointing in the direction of the key channel and designed to query a coding on the key, as well as a housing side pointing in the direction of the housing and designed to engage in a housing recess.

According to the invention, at least two locking sections projecting to different extents in the direction of the longitudinal axis are provided on the housing side of the core pin, each with a locking surface that runs essentially normal to the longitudinal axis. In other words, the housing side of the core pin is not linear, but essentially step-shaped.

This ensures that - depending on the offset of the core pin and the core pin guide relative to the axis of rotation - the housing side can be designed in such a way that even a slight displacement of the core pin can lead to a significant blocking of the cylinder core in the housing.

It is intended that the blocking surfaces protrude beyond the cylinder core in the blocking position. In the blocking position of the core pin, the locking sections protrude at least partially, preferably completely, into the housing recess.

The locking surfaces of the core pin are preferably flat, smooth and/or without elevations. If necessary, a transition region can be arranged between the locking sections, which in particular runs obliquely to the longitudinal axis of the core pin.

According to the invention it is provided that in the blocking position both locking surfaces of the core pin protrude into the housing recess, so that movement of the cylinder core relative to the housing is prevented, and in the release position the core pin releases the movement of the cylinder core relative to the housing. In the release position, the core pin can be arranged in the cylinder core, in particular without any projection and/or completely.

In the sense of the invention, the term that a side is designed in a step-like manner can be understood as meaning a side which comprises at least two steps, which are optionally spaced apart by a transition region.

The core pin guide can extend transversely, preferably normal to the radial plane R of the cylinder core and can preferably be arranged offset from the axis of rotation D of the cylinder core.

The offset of the core pin guide can be, for example, half, a third, a quarter or a fifth of the radius of the cylinder core. Due to the step-shaped design of the housing side of the core pin, the offset can be particularly large and it can even be provided that two or more core pins are arranged in a quadrant of the cylinder core cross section.

The core pin may be substantially cylindrical but may have a non-circular cross section such that it is not rotatable in the core pin guide. In particular, the core pin can have a shoulder that extends radially outward in sections and is designed to interact positively with a stop in the core pin guide in order to limit the displacement of the core pin in the core pin guide in the direction of the cylinder core.

In order to limit the movement of the core pin in the core pin guide in the direction of the housing, it can be provided that the housing recess has a smaller cross section than the core pin guide, so that the core pin can only penetrate into the housing recess with its locking sections, i.e. the locking surfaces.

The core pin can include a release device which is designed such that the core pin in the core pin guide is moved from the blocking position to the release position when a key assigned to the cylinder lock is inserted into the key channel. The release device can preferably be magnetizable and particularly preferably comprise a permanent magnet which is designed to interact with a magnetic coding on the key.

The core pin can be moved essentially in the direction of its longitudinal axis in the core pin guide by interacting with the release device. In particular, the release device and the core pin can cooperate in such a way that the core pin is moved in the direction of the key channel or in the direction of the housing, whereby the rotation of the cylinder core relative to the housing is released.

The release device can be arranged in a recess of the core pin, preferably designed as a blind hole, which is particularly preferably arranged on the core side of the core pin, i.e. adjacent to the key channel. The blind hole can preferably be formed symmetrically about the longitudinal axis of the core pin.

A first control surface can be provided on the core side of the core pin, which is flat and runs essentially normal to the longitudinal axis of the core pin. Furthermore, a second control surface can be provided on the core side of the core pin, which is curved or curved along the longitudinal axis.

The first control surface on the core side of the core pin can form a first circular ring section. The second control surface on the core side of the core pin can form a second circular ring section. Both circular ring sections can cover the outer circumference of the core side of the core pin. The control surfaces can in particular be arranged concentrically around the recess, preferably the blind hole. The control surfaces can preferably be designed to be offset in steps along the longitudinal axis, so that the second control surface extends further in the direction of the key channel than the first control surface.

The second control surface can in particular be designed as a web-shaped scanning extension for scanning a slot-shaped coding on the key. This may make it possible to further increase the security of the cylinder lock, since on the one hand the key must be designed to move the core pin and, on the other hand, must have a coding that can interact with the control surface of the core pin. If necessary, the core pin is only moved by the interaction of the key and the control surface.

A housing pin that is preloaded by a spring and interacts with the core pin can be provided in the housing recess. The housing pin can be designed in such a way that it forms a dividing plane between the cylinder core and the housing and releases this when a key assigned to the cylinder lock is inserted into the key channel.

At least one spacer plate can be provided between the core pin and the housing pin, so that the rotation of the cylinder core relative to the housing is enabled in two or more positions of the core pin. In other words, the spacer plates enable the formation of two or more independent division planes. This makes it possible in particular to use key systems with different key hierarchies for operating the cylinder lock.

In particular, it is provided that the spacer plate is also displaced by a displacement of the core pin. Depending on the hierarchy of the key, the at least one core pin, in particular its housing side, or the at least one spacer plate is brought into a position in which the cylinder core can be rotated relative to the housing.

The housing side of the at least one core pin, the housing side of the at least one spacer plate or the separating surface between the at least one core pin and the at least one spacer plate are preferably aligned with the parting line (partition plane) between the cylinder core and the housing, so that a rotation of the cylinder core relative to the housing is possible if necessary .

According to the invention, it can be provided that the spacer plate is essentially cylindrical with a longitudinal axis, a front core side and an opposite housing side. The core side can rest on the core pin and the housing side on the housing pin or on another spacer plate. The core side can be in positive engagement with the housing side of the core pin. The core side can preferably be designed essentially step-shaped, in that at least two blocking surfaces are provided on the core side, projecting to different extents along the longitudinal axis and running essentially normal to the longitudinal axis, optionally connected by a transition region.

At least one blocking surface of the at least one spacer plate can preferably be flat, smooth and/or raised-free. The steps on the core side of the spacer plate can be formed by the at least two blocking surfaces. A transition region can be arranged between the at least two blocking surfaces on the core side of the spacer plate, which in particular runs obliquely to the longitudinal axis of the spacer plate.

The spacer plate, in particular its core and/or housing side, is preferably designed in such a way that the spacer plate can be positively connected, in particular to the core pin, in particular to the housing side of the core pin, and/or another spacer plate.

The core side of the spacer plate can essentially correspond to the housing side of the core pin. The housing side of the spacer plate can essentially correspond to the core side of another spacer plate. The housing side of the spacer plate can also not be step-shaped, but bent, slanted or rounded.

Thanks to the positive connection, the spacer plate can be guided together with the core pin. This makes it possible for the spacer plate to be non-rotatably movable in the direction of its longitudinal axis.

Of course, the cylinder lock can also have further query elements for querying any coding on the key.

Also disclosed is a key for a cylinder lock according to the invention, wherein the key has at least one preferably magnetic coding which is designed such that the core pin is moved from the blocking position to the release position when the key is inserted into the key channel. Of course, the key can also have other codings.

The invention further relates to a locking device with a cylinder lock according to the invention and such a key.

The scope of this invention is defined by the present claims.

The invention will now be further explained using exemplary, non-exclusive and/or non-limiting exemplary embodiments.

Figures 1a and 1b show a schematic representation of a first embodiment of a cylinder lock according to the invention;

Figures 2a and 2b show a schematic representation of a first embodiment of a core pin according to the invention,

Figures 3a and 3b show a schematic representation of a second embodiment of a core pin according to the invention,

Figure 4 shows a schematic representation of a spacer plate,

Figures 5a to 5c show a schematic representation of a section of a second embodiment of a cylinder lock according to the invention;

Figs. 1a and 1b show a schematic graphic representation of a first embodiment of a cylinder lock according to the invention, wherein in the Fig. 1b a part of Fig. 1a is shown enlarged. The cylinder lock comprises a housing 1 and a cylinder core 2 rotatably mounted therein. According to this illustration, a key 3 is inserted into the key channel 7 of the cylinder lock.

The key channel 7 extends in a radial plane R through the axis of rotation D of the cylinder core 2 and has a core pin guide 13 in which a core pin 6 is displaceably arranged. The core pin guide 13 is arranged approximately normal to the radial plane R and arranged eccentrically to the axis of rotation D with an offset of approximately one third of the cylinder core radius from the axis of rotation D. In other words, the core pin guide 13 leads laterally and above the axis of rotation D transversely from the housing 1 through the cylinder core 2 into the key channel 7.

In this illustration, the core pin 6 is shown in its release position. In this release position, the core pin 6 is arranged within the cylinder core 2 without any projection.

As a result, in the release position, the dividing surface between the cylinder core 2 and the housing 1 is free and a rotation of the cylinder core 2 relative to the housing 1 is possible. The core pin 6 can be brought from this release position into its blocking position, whereby rotation of the cylinder core 2 relative to the housing 1 is blocked.

According to this embodiment, the core pin 6 comprises a substantially cylindrical base body on which a shoulder 21 is arranged. The shoulder 21 is designed to interact with the cylinder core 2, in particular with a stop 23 in the core pin guide 13, so that the movement of the core pin 6 along its longitudinal axis 5 is limited.

According to this embodiment, the core pin 6 has a core side 8 and a housing side 9, which lie opposite each other. The core side 8 of the core pin 6 points in the direction of the key channel 7 and is designed to query a coding on the key 3. The housing side 9 of the core pin 6 points in the direction of the housing 1 and is designed to engage in a housing recess 24.

According to this embodiment, the core side 8 of the core pin 6 has first and second control surfaces 18, 19. The control surfaces 18, 19 are set up to query a coding, in particular a notch milling, on a side surface of the key 3. The first control surface 18 is designed in the form of a web-shaped scanning element which extends over the second control surface 19. The control surfaces 18, 19 of the core side 8 of the core pin 6 run essentially normal to the longitudinal axis of the core pin 6 and are essentially flat.

The housing side 9 of the core pin 6 is designed in a step-shaped manner according to this embodiment. The steps of the housing side 9 of the core pin 6 are formed by two locking sections 4, each of which has a locking surface 10 that is essentially normal to the longitudinal axis 5 of the core pin 6. A contact surface 22 is provided adjacent to the locking sections 4.

The housing recess 24 has a smaller cross section than the core pin guide 13, so that the core pin 6 can only penetrate into the housing recess 24 with its locking sections 4, i.e. the locking surfaces 10. The further movement of the core pin 6 in the direction of the housing 1 is limited by the fact that the contact surface 22 on the housing side 9 of the core pin 6 abuts against the inner circumference of the housing 1.

The core pin 6 includes a release device 11, which is designed such that the core pin 6 is moved from the blocking position to the release position when a key 3 assigned to the cylinder lock is inserted into the key channel 7. According to this embodiment, the release device 11 is designed as a permanent magnet, which is arranged in a blind hole 12 on the core side 8 of the core pin 6.

The Figures 2a and 2b show schematic representations of an embodiment of a core pin 6 'according to the invention in a side view and a sectional view. This core pin 6 'is a different embodiment than the one in the Figures 1a and 1b shown core pin 6, although their features can preferably correspond.

The core pin 6' of this embodiment is substantially cylindrical but has a non-circular cross section due to a radially outwardly extending shoulder 21. This shoulder 21 serves to limit the movement of the core pin 6' in the core pin guide 13 by being attached to a Stop 23 strikes in the core pin guide 13.

The core pin 6 'has a core side 8 on the end that points in the direction of the key channel 7 and is designed to query a coding on the key and a housing side 9 that points in the direction of the housing 1 and is designed to engage in a housing recess 24. On the housing side 9 there are two in In the direction of the longitudinal axis 5, locking sections 4 projecting to different extents are provided, each of which has a locking surface 10 which runs essentially normal to the longitudinal axis 5.

The housing side 9 is therefore stepped-shaped, with the locking surfaces 10 forming the steps. A short transition area 20 is provided between the blocking surfaces 10.

The core pin 6 'comprises a release device 11, which comprises a permanent magnet which is designed to cooperate with a magnetic coding on the key 3. The release device 11 is arranged in a blind hole 12 of the core pin 6', which is arranged on the core side 8 of the core pin 6'. The blind hole 12 is arranged essentially centrally and along the longitudinal axis 5 of the core pin 6 'and is delimited by an annular section of the core side 8. This annular section forms a first control surface 18.

The Figures 3a and 3b show schematic representations of a second embodiment of a core pin 6 according to the invention in a side view and in a three-dimensional view. This embodiment of the core pin 6 is the one in the Figures 1a and 1b shown core pin 6.

The core pin 6 is in turn essentially cylindrical with a non-circular cross section due to a shoulder 21 that extends radially outwards. The core pin 6 has a core side 8 on the end facing in the direction of the key channel 7 and designed for querying a coding on the key and one in the direction of the housing 1 and designed to engage in a housing recess 24. On the housing side 9, two locking sections 4 which project to different extents in the direction of the longitudinal axis 5 are provided, each of which has a locking surface 10 which runs essentially normal to the longitudinal axis 5. The housing side 9 is therefore stepped-shaped, with the locking surfaces 10 forming the steps. A short transition area 20 is provided between the blocking surfaces 10.

In contrast to the execution according to Fig. 2a and Fig. 2b In this exemplary embodiment, not only the housing side 9, but also the core side 8 is essentially step-shaped.

This is achieved by providing a first control surface 18 on the core side 8 of the core pin 6, which is flat and runs essentially normal to the longitudinal axis 5 of the core pin 6. In addition, a second control surface 19 is provided on the core side 8, which is curved along the longitudinal axis 5. The first and second control surfaces 18, 19 are arranged concentrically around the blind hole 12, thus forming its boundary or edge. The first control surface 18 forms a first circular ring section of the core side 8, and the second control surface 19 forms a second circular ring section of the core side 8. The first and second control surfaces 18, 19 are designed to be offset in steps along the longitudinal axis 5. In this exemplary embodiment, the second control surface 19 is formed over an angular range of less than 180° and thus forms a web-shaped scanning pin which is designed to be inserted into a corresponding milling cut on the key 3.

The Figure 4 shows a schematic representation of a spacer plate 15 according to the invention. The spacer plate 15 is essentially cylindrical with a longitudinal axis 25, a front core side 16 and an opposite housing side 17. The length of the spacer plate 15 is preferably less than its diameter. The core side 16 is essentially stepped-shaped in that at least two blocking surfaces 10 are provided on the core side 16, projecting to different extents along the longitudinal axis 25 and running essentially normal to the longitudinal axis 25 and connected by a transition region 20. The transition region 20 between the two steps of the core side 16 preferably runs obliquely to the longitudinal axis 25. However, in other exemplary embodiments, other shapes of the transition region 20, such as, for example, as part of a circular arc, are also provided. In examples not according to the invention, the housing side 17 can also not be designed in a step-shaped manner, but rather linearly and obliquely to the longitudinal axis 25.

The Figures 5a to 5c show schematic representations of a further embodiment of a cylinder lock according to the invention. The features of the embodiment according to Figures 5a to 5c can preferably correspond to the features of the embodiments according to Figures 1a, 1b , 2a, 2b , 3a, 3b and/or correspond to 4.

In this embodiment, a housing pin 26 which is preloaded by a spring 14 and interacts with the core pin 6 is provided in the housing recess 24. The spring 14 presses the core pin 6 in the direction of the key channel 7. The spring 14 is arranged in the housing recess 24. The housing pin 26 is designed such that it releases a dividing plane between the cylinder core 2 and the housing 1 when a key 3 assigned to the cylinder lock is inserted into the key channel 7.

A spacer plate 15 is provided between the housing pin 26 and the core pin 6, the core side 16 of the spacer plate 15 resting on the core pin 6 and the housing side 17 resting on the housing pin 26. The core side 16 of the spacer plate 15 is therefore in positive engagement with the housing side 9 of the core pin 6. In this embodiment, two independent division levels are formed, so that two differently coded keys can lock the lock.

According to this embodiment, the spacer plate 15 lies with its core side 16 in a form-fitting manner on the housing side 9 of the core pin 6 and, due to the step-shaped design of these sides, is positively connected to the core pin 6. Due to the positive connection, the spacer plate 15 is guided in the housing recess 24 and can be moved along its longitudinal axis 25 without rotation.

In the Figure 5a the core pin 6 is in a position in which the separating surface between the core pin 6 and the spacer plate 15 is aligned with the parting line between the cylinder core 2 and the housing 1, so that the cylinder core 2 can be rotated relative to the housing 1. In the Figure 5b the core pin 6 is in a position in which the housing side 17 of the spacer plate 15 is aligned with the joint between the cylinder core 2 and the housing 1, so that a rotation of the cylinder core 2 relative to the housing 1 is also possible. In Figure 5c the core pin 6 is in a position in which the housing pin 26 blocks the joint between the cylinder core 2 and the housing 1, so that rotation of the cylinder core 2 relative to the housing 1 is not possible. This configuration can be provided in all embodiments.

The invention is not limited to the illustrated embodiments, but includes any cylinder lock, any key and any locking device according to the following patent claims.

Reference symbol list

1

Housing

2

Cylinder core

3

Key

4

Barrier section

5

Longitudinal axis of the core pin

6, 6'

core pin

7

Key channel

8th

Core side of the core pin

9

Housing side of the core pin

10

restricted area

11

Release device

12

blind hole

13

Core pin guide

14

Feather

15

Spacer plates

16

Core side of the spacer plate

17

Housing side of the spacer plate

18

First control surface

19

Second control surface

20

Transition area

21

shoulder

22

Contact surface of the housing side of the core pin

23

attack

24

Housing recess

25

Longitudinal axis of the spacer plate

26

Housing pin

Claims (15)

1. A cylinder lock with a cylinder core (2) rotatable in a housing (1) about an axis of rotation D, comprising a key channel (7) extending in a radial plane R for the insertion of an encoded key (3),

   - wherein at least one core pin guide (13) extending outside the radial plane R is provided on one side of the key channel (7),

   - wherein a core pin (6, 6') is provided in the core pin guide (13), which

   ∘ is displaceable along its longitudinal axis (5) in the core pin guide (13) from a locking position into a release position,

   ∘ has a core side (8) facing in the direction of the key channel (7) and designed for interrogating a code on the key,

   ∘ has a housing side (9) facing in the direction of the housing (1) and designed for engaging in a housing recess (24), and

   ∘ is designed in such a way that the rotation of the cylinder core (2) relative to the housing (1) is released when a key (3) associated with the cylinder lock is inserted into the key channel (7),

   characterised in that
   at least two locking sections (4) projecting to different extents in the direction of the longitudinal axis (5) are provided on the housing side (9), each with a locking surface (10) extending substantially normal to the longitudinal axis (5), so that the housing side (9) is substantially formed step-shaped, wherein in the locking position both locking surfaces (10) of the core pin (6, 6') project into the housing recess (24) so that a movement of the cylinder core (2) relative to the housing (1) is prevented, and in the release position the core pin (6, 6') releases the movement of the cylinder core (2) relative to the housing (1).
2. The cylinder lock according to claim 1, characterised in that the core pin guide (13) extends transversely, preferably perpendicularly to the radial plane R of the cylinder core (2) and is preferably arranged offset to the axis of rotation D of the cylinder core (2).
3. The cylinder lock according to claim 1 or 2, characterised in that the core pin (6, 6') has a non-circular cross-section and is not rotatable in the core pin guide (13).
4. The cylinder lock according to one of claims 1 to 3, characterised in that the core pin (6, 6') comprises a release device (11) which is designed in such a way that the core pin (6, 6') is displaced in the core pin guide (13) from the locking position into the release position, when a key (3) associated with the cylinder lock is inserted into the key channel (7), wherein the release device (11) is preferably magnetisable and particularly preferably comprises a permanent magnet which is designed to cooperate with a magnetic code on the key (3).
5. The cylinder lock according to claim 4, characterised in that the release device (11) is arranged in a recess of the core pin (6, 6') which is preferably designed as a blind hole (12) and which is particularly preferably arranged on the core side (8) of the core pin (6, 6').
6. The cylinder lock according to one of claims 1 to 5, characterised in that a first control surface (18) is provided on the core side (8) of the core pin (6, 6'), which control surface is flat and extends substantially normal to the longitudinal axis (5) of the core pin (6, 6').
7. The cylinder lock according to one of claims 1 to 6, characterised in that a second control surface (19) is provided on the core side (8) of the core pin (6, 6'), which control surface is curved along the longitudinal axis (5).
8. The cylinder lock according to claim 7 in combination with claim 6, characterised in that the first control surface (18) forms a first annular portion of the core side (8), and the second control surface (19) forms a second annular portion of the core side (8), wherein the control surfaces (18, 19) are step-shaped and offset along the longitudinal axis (5).
9. The cylinder lock according to claim 8 in combination with claim 5, characterised in that the control surfaces (18, 19) are arranged concentrically around the recess, preferably the blind hole (12).
10. The cylinder lock according to one of claims 1 to 9, characterised in that the core pin (6, 6') has a substantially cylindrical cross-section with a shoulder (21) which extends radially outwards in sections and is designed to cooperate in a form-fitting manner with a stop (23) in the core pin guide (13) in order to limit the displacement of the core pin (6, 6') in the core pin guide (13).
11. The cylinder lock according to one of claims 1 to 10, characterised in that a housing pin (26) is provided in the housing recess (24), which pin is preloaded by a spring (14) and cooperates with the core pin (6, 6') and is designed in such a way that it releases a dividing plane between the cylinder core (2) and the housing (1) when a key (3) associated with the cylinder lock is inserted into the key channel (7).
12. The cylinder lock according to claim 11, characterised in that at least one spacer plate (15) is provided between the core pin (6, 6') and the housing pin (26), so that rotation of the cylinder core (2) relative to the housing (1) is released in two or more positions of the core pin (6, 6').
13. The cylinder lock according to claim 12, characterised in that

    a. the spacer plate (15) is substantially cylindrical with a longitudinal axis (25), a core side (16) and a housing side (17),

    b. wherein the core side (16) rests against the core pin (6, 6') and the housing side (17) rests against the housing pin (26) or against a further spacer plate (15),

    c. wherein the core side (16) is in positive engagement with the housing side (9) of the core pin (6, 6'), and wherein, preferably,

    d. the core side (16) is substantially step-shaped, in that at least two locking surfaces (10) are provided on the core side (16), which surfaces project to different extents along the longitudinal axis (25), run substantially normal to the longitudinal axis (25) and are optionally connected by a transition region (20).
14. The cylinder lock according to claim 13, characterised in that the housing side (17) of the spacer plate (15) is not step-shaped, but curved, oblique or rounded.
15. A locking device with a cylinder lock according to one of claims 1 to 14 and a key (3), characterised in that the key (3) has at least one preferably magnetic code which is designed in such a way that the core pin (6, 6') is displaced from the locking position into the release position when the key (3) is inserted into the key channel (7).

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