EP3665346A1

EP3665346A1 - Coupling system for an electromechanical lock

Info

Publication number: EP3665346A1
Application number: EP18745939.1A
Authority: EP
Inventors: Harald Neumayer; Alfonso Bartolomé CHAVERT
Original assignee: EVVA Sicherheitstechnologie GmbH
Current assignee: EVVA Sicherheitstechnologie GmbH
Priority date: 2017-08-08
Filing date: 2018-07-26
Publication date: 2020-06-17
Anticipated expiration: 2038-07-26
Also published as: AT520252A1; WO2019030003A1; ES2911916T3; EP3665346B1; AT520252B1

Abstract

The invention relates to a coupling system for an electromechanical lock, comprising a housing (2), a core (1) rotatably mounted in the housing (2), and a slidable connecting means for interlockingly connecting the core (1) to the housing (2), wherein a coupling element is provided, which can be slid substantially along a longitudinal axis (23) of the core (1) from a release state into a blocking state, wherein the connecting means interlockingly engages in the core (1) and the housing (2) in the blocking state, and the coupling element has on the outer periphery thereof an engagement surface (5), which expands conically with respect to the longitudinal axis (23), for sliding the connecting means into the housing (2).

Description

Coupling system for an electromechanical lock

The invention relates to a coupling system for an electromechanical lock and an electromechanical lock with such a coupling system.

Coupling systems for electromechanical locks are known from the prior art. Such coupling systems are usually controlled electronically and operate an electromechanical coupling device to release a lock or block. For this purpose receives one

Control electronics a signal, for example via an RFI D card, which is evaluated and depending on the result of the evaluation are electromechanical

Coupling means controlled to release the lock or block.

In particular, systems are known in which the control electronics in a

Hand knob is arranged, and the coupling system between a blocking state and a release state is switchable. In the blocking state can be the

Do not turn hand knob. In the release state, the hand knob can rotate and actuates a blocking means, such as the case or the locking lug of a lock. It is provided in particular that the release state only for a short time, usually only a few seconds, can be activated, and the clutch system then assumes the blocking state again. Such known coupling systems comprise a housing and a housing rotatably mounted in the core and a connecting means which produces a mechanical positive and non-rotatable connection of the core to the housing.

However, the known coupling systems are overly complicated in structure and also not suitable to be adapted to different applications. Thus, it would be desirable to use one and the same electromechanical coupling system both for hybrid cylinders that are electronically actuated on one side and mechanically actuated on the other side, as well as for double-sided electronically actuated cylinders. A use of the components of the same coupling system for the distributed in mailboxes or lockers lever cylinder, in which the cylinder core is directly connected to a closing lever and does not engage in a locking lug, and in which an actuation takes place only from one side, would also be advantageous.

These and other objects are achieved by a coupling system according to claim 1.

According to the invention, a separate coupling element is provided, which in the

Is substantially displaceable along a longitudinal axis of the core from a release state to a blocking state. In the blocking state, the connecting means engages both in the core, as well as in the housing in a form-fitting manner, so that the core and housing are mechanically connected. Rotation of the core in the locked state is thus prevented.

In order to move the connecting means in the blocking state into the housing, the coupling element has on its outer circumference a relative to the longitudinal axis substantially conically widening engagement surface. This engagement surface is in contact with the connecting means, so that upon axial displacement of the

Clutch element, the connecting means is pressed from the core into the housing. Thus, only the coupling element has to be displaced along the longitudinal axis of the core in order to move the coupling system from the blocking state into the

Release state and bring back. The blocking state is usually the initial state, so that the coupling element must be moved to reach the release state. For substantially axial displacement of the coupling element along the longitudinal axis of the core can be provided according to the invention that the

Coupling element via a spring element, preferably via a coil spring, is connected to a motor spindle of a motor. In particular, it may be provided that the coupling element for substantially axial displacement along the longitudinal axis of the core via a spring element, preferably via a coil spring, with a motor rotatably mounted on a motor spindle of a motor motor nut is connected. Of course, other Umsetzmechanismen are provided according to the invention to achieve a resilient displacement of the coupling element substantially along the longitudinal axis of the core.

Starting from the blocking state is thus upon rotation of the motor spindle the

Clutch element axially displaced against the tension of the spring element and releases the connecting means, which can be pressed by rotation of the core into the housing, so that the release state is reached. To get back to the blocking state, the motor spindle is rotated in the other direction, so that the

Clutch element is moved back axially and pushes the connecting means back into the housing.

According to the invention it can be provided that the core is connected to a closing device, for example a closing lever, so that the closing device can be actuated in the release state by rotation of the core, and can not be actuated in the blocking state. Such an embodiment may be provided in particular with lever cylinders, which are actuated only from one side.

According to the invention it can be provided that the coupling element as

Coupling ring is executed, which comprises at its outer periphery an outwardly projecting, in a core groove of the core substantially axially guided shoulder. This ensures that the coupling ring is movable only in the axial direction. The engagement surface according to the invention may preferably be provided on the outer surface of this shoulder and cooperate there according to the invention with the connecting means. In particular, a recess may be provided in the core groove, through which the connecting means can be performed in order to produce the positive connection of the core with the housing.

According to the invention it can be provided that the connecting means is designed as a ball, which is to form the blocking state by a preferably

circular recess of the core can be pressed into a housing groove of the housing. The recess of the core may in particular be provided in the core groove of the core, so that the guided in the core groove shoulder of the coupling ring is adapted to print the ball through the recess of the core in the housing groove. In the blocking state, the ball is partly in the core groove and partly in the housing groove, so that a positive connection between the core and the housing is achieved.

An inventive advantage of the realization of the connecting means as a ball also consists in that in the release state no return means are required to move the ball back into the core: The force exerted on the core by manual actuation of the knob torque is sufficient to the ball through the Edge of the housing groove to move back into the core.

According to the invention, it can be provided that the coupling element has on its outer circumference, preferably on the outer circumference of the shoulder, an abutment face that widens in a substantially arcuate manner with respect to the longitudinal axis. This stop surface may in particular be steeper than the engagement surface and forms a stop for the connecting means, so that the coupling element can not be moved further. When using a ball as

Connecting means may be provided according to the invention that the radius of the circular arc substantially corresponds to the radius of the ball.

The engagement surface can pass directly into the abutment surface, but it can also be provided that between the engagement surface and the abutment surface a substantially equidistant from the longitudinal axis extending spacer surface is formed. This allows a design-related game in the position of the coupling element in the blocking state.

According to the invention it can be provided that a plurality of connecting means are provided. In particular, two connecting means may be provided.

The connecting means may be arranged distributed substantially uniformly on the outer circumference of the core. This has the advantage that the torque acting in the blocking state on the core are uniformly dissipated to the housing.

According to the invention it can be provided that several, preferably two, in

Substantially evenly distributed on the outer circumference of the coupling ring shoulders are provided, which are designed to engage in a plurality, preferably four, substantially uniformly distributed on the inner circumference of the core core grooves.

This ensures that the core in several angular positions, preferably in four rotated by 90 ° angular positions, can be performed in the blocking state. The core grooves preferably each have recesses for the passage of the connecting means in corresponding housing grooves in order to produce the positive connection in the different angular positions of the core can.

According to the invention it can be provided that for connecting the core with an actuating element, for example a locking lug, a separate coupling element is provided, which for positive engagement in recesses of the

Actuator is executed. This has the advantage that different adapters can be used to operate different locking lugs, and the core thus does not have to be made differently for each locking lug.

To a particularly advantageous according to the invention interaction with the

To enable coupling element, may be provided according to the invention that the coupling element is in resilient connection with the coupling element and also substantially along the longitudinal axis of the core is displaceable. According to the invention it can be provided that the coupling element for substantially axial displacement along the longitudinal axis of the core via the spring element described above, preferably via a coil spring, is connected to a motor nut of a motor rotatably mounted motor nut. In this case, the spring element is resiliently connected both to the coupling element, to the coupling element, and to the motor nut.

As a result, the coupling element is connected to the coupling element and moves in the blocking state substantially synchronously with the coupling element.

In the release state, however, the coupling element is pressed against the actuating element and remains in this position, unless it is positively in

Recesses of the actuating element engages. The actuator is not engaged in this situation and freely rotatable - an actuation of the locking lug is not possible. This situation is called freewheeling. Only when the coupling element is brought into a position by turning the knob, in which it in the

Actuator engages positively, the actuator can be actuated. This situation is called a locked state.

According to the invention it can be provided that the spring element is designed as a one-piece spiral spring with an outer spiral and an inner spiral, wherein one end of the outer coil with the coupling element, and the inner spiral is in communication with the motor nut. If a coupling element is provided, it can be provided that the outer spiral is connected at its other end to the coupling element.

This allows a particularly efficient and modular execution of the

coupling system according to the invention, since only an additional part, namely the coupling element is required, and the spring element and the coupling element and the connecting means can be used.

According to the invention it can be provided that the coupling element is substantially annular. The coupling element may have a carrier ring and, preferably, two engagement jaws projecting essentially radially and axially outwards. The engagement jaws can in particular be designed for positive engagement in recesses of the actuating element, for example a locking nose.

According to the invention, it can be provided that the coupling element has an internal thread for connection to the spring element. The spring element may be screwed, welded, or otherwise secured to the coupling element. According to the invention can also be provided that the coupling element for connection to the spring element has an internal thread. The spring element can be screwed to the coupling element, welded, or secured in some other way.

The invention also extends to a lock, preferably a

electromechanical lock, comprising a coupling system according to the invention.

The invention will be explained in more detail below with reference to non-exclusive embodiments. Show it:

1 shows a schematic exploded view of a first embodiment of a coupling system according to the invention;

2a shows a cross section through this embodiment of a coupling system according to the invention in the blocking state;

2b shows a cross section through this embodiment of a coupling system according to the invention in the release state;

Fig. 2c - 2d: a schematic view and a cross section of this embodiment of the coupling element according to the invention;

Fig. 2e - 2g: schematic views of a core, a spring element and a housing for this embodiment of the coupling system according to the invention; 3 is a schematic exploded view of a second embodiment of a coupling system according to the invention;

4a shows a cross section through this second embodiment of a

coupling system according to the invention in the blocking state;

4b: a cross section through this second embodiment of a

coupling system according to the invention in the release state; 4c: a cross section through this second embodiment of a

coupling system according to the invention in the locked state;

Fig. 4d - 4f: schematic views of the coupling element for this second

Embodiment of the coupling system according to the invention.

Fig. 1 shows a schematic exploded view of a first embodiment of a coupling system according to the invention for an electromechanical lock. On the left side of this illustration, a conventional hand knob is shown, which is in communication with the core 1. The core 1 is rotatably mounted in the housing 2. At rest, the coupling system is in the locked state, so that the user can not cause rotation of the core 1 relative to the housing 2 by turning the hand knob. In the release state, the coupling system releases the core 1 and the user can effect rotation of the core 1 relative to the housing 2 by turning the hand knob. In the core 1 is a coupling element in the form of a coupling ring 3 and a spring element in the form of a coil spring. 9

arranged. For positive connection of the core 1 with the housing 2 serve connecting means in the form of two balls. 4

Fig. 2a shows a cross section through this embodiment in the blocking state. The coupling system according to the invention is used in this case for a lever cylinder lock. The blocking state shown in this figure represents the resting state of the lock. The coupling system comprises a housing 2 and a rotatably mounted therein core 1, which is connected on the left side with a hand knob. On the right side of the core 1 is connected to a closing lever 24. There are two balls 4 provided by a circular recess 17 of the core 1 in

Housing grooves 16 of the housing 2 are pressed. For this purpose, a coupling ring 3 is provided in the core 1, which is displaceable along the longitudinal axis 23 of the core 1. The coupling ring 3 has at its outer periphery via two radially outwardly projecting shoulders 12, which engage in each case in a core groove 13 of the core 1 for guiding. In the illustrated blocking state, the balls 4 are pressed by the abutment surface 1 1 on the outer circumference of the coupling ring 3 through the recess 17 in the housing groove 16 and provide a positive connection of the core 1 with the housing 2 safe. A rotation of the core 1 relative to the housing 2 is not possible.

To transfer the clutch system into the release state, the

Coupling ring 3 are moved to the right. For this purpose, the

Coupling ring 3 is connected via a coil spring 9 with a motor nut 8, which is arranged rotatably on a motor spindle 6 of a motor arranged in the core 1 7. By activating the motor 7, for example by an authorized electronic chip card or a legitimate RFI D chip, the motor spindle 6 is rotated. As a result, the motor nut 8 is moved to the right along the longitudinal axis 23 and also pulls the coil spring 9 to the right. The coupling ring 3 is connected at its inner periphery via an internal thread 25 with the coil spring 9 and is thus also displaced to the right until the release state is reached.

Fig. 2b shows a cross section through this embodiment, when the

Release state is reached. The motor spindle 6 has moved by rotation, the motor nut 8 to the right and the coil spring 9 and the coupling ring. 3

taken. The coupling ring releases on its outer surface the balls 4, and these can be moved along the conical engagement surface 5 in the core 1. By using the balls 4 as connecting means, it is not necessary to provide a return means for the connecting means, since upon rotation of the core 1, the balls 4 are forcibly pushed into the interior of the core 1 by the edges of the housing groove 1 6. A rotation of the core 1 relative to the housing 2 is thus possible, so that the closing lever 24 can be rotated by actuation of the hand knob. In this state, the coil spring 9 is stretched and is right on the closing lever 24, so that a force is exerted on the coupling ring 3.

In general, the release state only for a certain period of time,

for example, a few seconds, to ensure that one

Actuation of the closing lever can only be done for a short time. Thereafter, the motor 7 rotates the motor spindle 6 in the opposite direction and the motor nut 8 pulls on the coil spring 9, the coupling ring 3 again to the left in the

Blocking state according to FIG. 2a. By transition from the release state into the

Blocking state, the coil spring 9 is relaxed again.

Fig. 2c - 2d show a schematic view and a cross section of a

Embodiment of the coupling element according to the invention in the form of a

Coupling ring 3. The coupling ring 3 has on its externa ßeren circumference two outwardly projecting, substantially semi-cylindrical shoulders 12. At its inner circumference, an internal thread 25 is provided, which serves to connect one end of the coil spring 9 with the coupling ring 3. The shoulders 12 comprise on their outer surface an engagement surface 5, a spacer surface 10 and a

Stop surface 1 1.

The engagement surface 5 is widened conically outward with respect to the longitudinal axis 23 and thus also with respect to the longitudinal axis of the coupling ring 3 in order to achieve the above-described interaction with the connection means. The angle of the engagement surface 5 with respect to the longitudinal axis 23 is about 20 °. Subsequent to the engagement surface 5, a spacer surface 10 is provided, whose cross-section in

Substantially parallel to the longitudinal axis 23 extends. Finally, the spacer surface 10 passes into a stop surface 1 1, which widens in a circular arc outward. The radius of the circular arc corresponds approximately to the radius of the balls 4. This ensures that the balls 4 are held securely in the stop surface.

Fig. 2e shows a schematic view of a core 1 for this embodiment of the coupling system according to the invention. The core 1 is substantially cylindrical and has a recess for receiving the motor 7 and the coupling system itself. At the inner periphery of the recess four core grooves 13 are each offset approximately 90 ° to each other. The core grooves 13 serve to guide the shoulders 12 of the coupling ring 3. In the core grooves 13 circular recesses 17 for the implementation of the balls 4 are provided. Fig. 2f shows a schematic view of a coil spring 9 for this embodiment of the coupling system according to the invention. The coil spring 9 is in one piece and comprises an outer coil 14 and an inner coil 15. One end of the outer coil 14 is connected to the coupling ring 3, for example, screwed into the internal thread 25 and possibly also selectively welded. The inner coil 15 is connected to the motor nut 8, so that a movement of the motor nut 8 is resiliently transmitted to the coupling ring 3.

Fig. 2g shows a schematic view of a housing 2 for this embodiment of the coupling system according to the invention. The housing 2 is substantially cylindrical and has an eccentrically arranged circular recess for receiving the core 1. At the inner periphery of the housing 2 are four

Housing grooves 16 each offset approximately 90 ° to each other. The housing grooves 16 serve to receive the balls 4. In this embodiment, the housing grooves 16 have rounded edges to ensure that in

Release state by manually turning the core 1, the balls 4 can be pressed without jamming in the core 1. But there are also versions with differently shaped housing grooves 1 6 are provided.

Fig. 3 shows a schematic exploded view of a second embodiment of a coupling system according to the invention for an electromechanical lock. On the left side of this illustration, a conventional hand knob is shown, which is in communication with the core 1. The core 1 is rotatably mounted in the housing 2. At rest, the coupling system is in the locked state, so that the user can not cause rotation of the core 1 relative to the housing 2 by turning the hand knob. In the release state, the coupling system releases the core 1 and the user can effect rotation of the core 1 relative to the housing 2 by turning the hand knob. In the core 1 is a coupling element in the form of a coupling ring 3, a spring element in the form of a coil spring 9, and a coupling element 18 is arranged for engagement in a locking lug 19. For positive connection of the core 1 with the housing 2 serve connecting means in the form of two balls. 4 Fig. 4a shows a cross section through this embodiment in the blocking state. The coupling system according to the invention is used in this case for a cylinder lock with a locking lug 19. The blocking state shown in this figure represents the resting state of the lock. The coupling system comprises a housing 2 and a rotatably mounted therein core 1, which on the left side with a

Hand knob is connected. On the right side of the core 1 is connected to the locking lug 19.

There are two balls 4 are provided, which are pressed by a circular recess 17 of the core 1 in the housing grooves 16 of the housing 2. For this purpose, a coupling ring 3 is provided in the core 1, which is displaceable along the longitudinal axis 23 of the core 1. The coupling ring 3 is identical to the embodiment of Fig. 2a executed and has at its outer periphery via two radially outwardly projecting shoulders 12, which engage for guiding in each case in a core groove 13 of the core 1. In the illustrated blocking state, the balls 4 through the

Stop surface 1 1 pressed on the outer circumference of the coupling ring 3 through the recess 17 in the housing groove 1 6 and provide a positive connection of the core 1 with the housing 2 safely. A rotation of the core 1 relative to the

Housing 2 is not possible.

To transfer the clutch system into the release state, the

Coupling ring 3 are moved to the right. For this purpose, the

Coupling ring 3 is connected via a coil spring 9 with a motor nut 8, which is arranged rotatably on a motor spindle 6 of a motor arranged in the core 1 7.

By activating the motor 7, for example by an authorized electronic chip card or a legitimate RFI D chip, the motor spindle 6 is rotated. As a result, the motor nut 8 is moved to the right along the longitudinal axis 23 and also pulls the coil spring 9 to the right. The coupling ring 3 is connected at its inner periphery via an internal thread 25 with the coil spring 9 and is thus also displaced to the right until the release state is reached. In contrast to the embodiment as a lever cylinder lock according to Fig. 2a in this case, the coil spring 9 at the second end of the Au ßenspirale 14 via a

Internal thread 22 connected to a coupling element 18. The coupling element 18 is used for positive engagement in corresponding recesses of the locking lug 19th

It is considered that the position of the locking lug 19 usually,

especially with both sides actuated locks, can not be ensured.

The coupling element 18 is in resilient connection with the coupling ring 3 and the motor nut 8 and is also displaceable along the longitudinal axis 23. in the

shown blocking state, the coil spring 9 is relaxed and the coupling element does not engage in the locking lug 19 a. The locking lug 19 is thus freely rotatable.

Fig. 4b shows a cross section through this embodiment when the

taken. The coupling ring releases on its outer surface the balls 4, and these can be moved along the conical engagement surface 5 in the core 1. In this state, the coil spring 9 is tensioned. However, the coupling element 18 does not yet engage in the provided recesses of the locking lug 19, but is applied to this, so that on the tensioned coil spring 9, a force is exerted on the coupling ring 3.

A rotation of the core 1 relative to the housing 2 is possible in this position, so that by actuation of the hand knob, the coupling element 18 can be moved to that position in which it can engage in the provided recesses of the locking lug 19. As a rule, the hand knob must be turned by a maximum of 90 °.

Fig. 4c shows a cross section through this second embodiment in the locked state. The coupling element 18 is moved completely to the right and in the

Locking lug 19 engaged. An actuation of the locking lug 19 by turning the

Hand knob is thus possible. The release state and locked state is usually maintained only for a certain period of time, for example a few seconds, to ensure that actuation of the locking lug can only take place for a short time. Thereafter, the motor 7 rotates the motor spindle 6 in the opposite direction and the motor nut 8 pulls the coupling ring 3 again to the left via the coil spring 9. This will also do that

Coupling element 18 taken and dissolved the positive connection with the locking lug 19. By transition from the release state in the blocking state, the coil spring 9 is relaxed again.

Fig. 4d shows a schematic view, as in this embodiment of

Coupling ring 3 and the coupling element 18 are resiliently connected to each other via the coil spring 9. The structure of the coupling ring 3 corresponds to the im

Connection with the first embodiment described construction. The coil spring 9 is designed in this embodiment with an outer coil 14 and an inner coil 15, wherein one end of the outer coil 14 with the

Coupling ring 3 and another end of the outer coil 14 with the coupling element 18, and the inner coil 15 is in communication with the motor nut 8.

4e and 4f show a schematic view and a cross section along the indicated sectional plane of the coupling element 18 for this second embodiment of the coupling system according to the invention. The coupling element 18 is in

Essentially annular and comprises a support ring 21 and two radially and axially outwardly projecting engagement jaws 20. The engagement jaws are arranged offset on the circumference of the support ring by 180 ° and are used for positive engagement in recesses of the locking lance 19th

Depending on the shape and design of the locking lug 19 other forms of the coupling element 18 and embodiments of the engaging jaws 20 are of course provided. In particular, a higher or lower number of

Engagement jaws 20 may be provided. For connection to the coil spring 9, the carrier ring 21 of the coupling element 18 at its inner periphery an internal thread 22. The invention is not limited to the described embodiments

Use with a lever cylinder, a locking cylinder with locking nose, a one-sided or double-sided cylinder. Also, the invention is not limited to one

Application limited to an electromechanical lock, but also includes coupling systems for purely mechanical or purely electronically operated locks in the context of the following claims.

LIST OF REFERENCE NUMBERS

1 core

2 housings

3 coupling ring

4 ball

5 engagement surface

6 motor spindle

7 engine

8 engine nut

9 spiral spring

10 distance surface

1 1 stop surface

12 shoulder

13 core groove

14 outdoor spiral

15 inside spiral

16 housing groove

17 recess

18 coupling element

19 locking nose

20 engaging jaws

21 carrier ring

22 internal thread

23 longitudinal axis

24 locking levers

25 internal thread

Claims

claims

1 . Coupling system for an electromechanical lock, comprising a housing (2), a rotatably mounted in the housing (2) core (1) and a displaceable connecting means for the positive connection of the core (1) with the

Housing (2),

characterized in that

a coupling element is provided which is substantially along a

Longitudinal axis (23) of the core (1) from a release state into one

Blocking state is displaced, wherein in the blocking state, the connecting means in the core (1) and the housing (2) engages positively, and the

Coupling element for displacement of the connecting means in the housing (2) at its outer periphery a relative to the longitudinal axis (23) in

Has substantially conically widening engagement surface (5).

2. Coupling system according to claim 1, characterized in that the

Coupling element for substantially axial displacement along the

Longitudinal axis (23) of the core (1) via a spring element, preferably via a coil spring (9), with a motor spindle (6) of a motor (7) is connected.

3. Coupling system according to claim 2, characterized in that the

Coupling element with one, on the motor spindle (6) of the motor (7) rotatably mounted, motor nut (8) is connected.

4. Coupling system according to one of claims 1 to 3, characterized in that the core (1) is connected to a closing device, for example a closing lever (24), so that the closing device in the release state by rotation of the core (1) is actuated, and in Blocking state is not actuated.

5. Coupling system according to one of claims 1 to 4, characterized in that the coupling element is designed as a coupling ring (3) at its outer periphery at least one outwardly projecting, in a core groove (13) of the core (1) substantially axially guided shoulder (12), wherein the engagement surface (5) is preferably provided on the outer surface of the shoulder (12) and the core groove (13) has a recess for the implementation of

Having connecting means.

6. Coupling system according to one of claims 1 to 5, characterized in that the connecting means is designed as a ball (4) for forming the blocking state by a preferably circular recess (17) of the core (1) in a housing groove (1 6) of the housing (2) can be pressed.

7. Coupling system according to claim 6, characterized in that the

Coupling element at its outer periphery, preferably at the outer periphery of the shoulder (12), one opposite to the longitudinal axis (23) in

Essentially circular arc-shaped widening abutment surface (1 1), wherein the radius of the circular arc substantially corresponds to the radius of the ball (4), and wherein between the engagement surface (5) and the abutment surface (1 1) preferably a substantially equidistant to the longitudinal axis (23 ) extending spacer surface (10) is formed.

8. Coupling system according to one of claims 1 to 7, characterized in that a plurality, preferably two, connecting means are provided, which are preferably arranged distributed substantially uniformly on the outer circumference of the core (1).

9. Coupling system according to one of claims 5 to 8, characterized in that a plurality, preferably two, substantially evenly on the outer circumference of the coupling ring (3) distributed shoulders (12) are provided, which for engaging in a plurality, preferably four, substantially evenly distributed on the inner circumference of the core (1) core grooves (13) are executed.

10. Coupling system according to one of claims 1 to 9, characterized in that for connection of the core (1) with an actuating element, for example a locking lug (19), a coupling element (18) is provided which with the

Coupling element is in resilient connection, substantially along the longitudinal axis (23) of the core (1) is displaceable and is designed for positive engagement in recesses of the actuating element.

1 1. Coupling system according to claim 10, characterized in that the

Coupling element (18) for substantially axial displacement along the longitudinal axis (23) of the core (1) via a spring element, preferably via a spiral spring (9), with a motor nut (8) fixed against rotation on a motor spindle (6) of a motor (7) ) is connected, so that the coupling element (18) is resiliently pressed against the actuating element.

12. Coupling system according to claim 1 1, characterized in that the

Spring element with the coupling element, with the coupling element (18), and with the motor nut (8) is resiliently connected.

13. Coupling system according to claim 12, characterized in that the

Spring element is designed as an integral spiral spring (9) with an outer spiral (14) and an inner spiral (15), one end of the outer spiral (14) with the coupling element and preferably another end of the outer spiral (14) with the coupling element (18), and the inner coil (15) communicates with the motor nut (8).

14. Coupling system according to one of claims 10 to 13, characterized in that the coupling element (18) is substantially annular and preferably has a support ring (21) and preferably two substantially radially and axially outwardly projecting engagement jaws (20), the positively engaged in recesses of the actuating element are executed.

15. Coupling system according to one of the preceding claims, characterized in that the coupling element for connection to the

Spring element has an internal thread (25) and optionally also the coupling element (18) for connection to the spring element has an internal thread (22).

16. Lock, preferably electromechanical lock comprising a

Coupling system according to one of claims 1 to 15.