EP2927395B1 - Clutch assembly for a lock cylinder with double compression spring - Google Patents

Description

The present invention relates to a clutch assembly for a lock cylinder, comprising a housing, a switching element disposed in the housing, a driving device disposed in the housing, and a coupling device displaceable between a coupling position and a disengaging position.

Such coupling arrangements are in the prior art, for example from the document EP 2 314 809 A1 known.

Such clutch assemblies are used, in particular in electromechanical lock cylinders, to switch between a clutched state and a disengaged state. In the dome state is an actuator, such as a handle or a door knob, rotatably by means of Coupling assemblies connected to a cam for actuating a lock of the corresponding door. In the decoupled state, the actuating element is freely rotatable, so that the lock can not be operated.

Between the dome state and the decoupled state is switched back and forth in response to a received authorization signal. The input of such an authorization signal can be wireless or via a corresponding control by a person. An evaluation then checks whether an authorization to open the door is present and optionally switches the clutch assembly in the coupled state.

In addition, coupling arrangements are also known which lock or release a shaft of the actuating element against the door to be opened or another stationary object in a rotationally fixed manner. With a confirmed authorization to open the door, the shaft of the actuator is then unlocked so that the actuator can be rotated and a lock can be operated. Otherwise, the actuator can not be rotated due to the obstruction against the door or the other object.

All of these embodiments have in common that an electromechanical clutch assembly is required, which can switch between two switching states, a coupled state and a decoupled state, back and forth. Usually, an electric motor is activated. The movement of the electric motor is then translated into a movement of mechanical elements for coupling and decoupling.

In particular, in the said case that by means of the clutch assembly in a coupled state, an actuating member is rotatably coupled and can rotate freely in a decoupled state, the case may arise that due to the position of the actuating element, in particular a freely rotatable door knob, the clutch assembly does not the decoupled state can be put into the coupled state. As a rule, this is because intended coupling elements instead of interfering with one another due to their position collide relative to each other. Only by a continued rotation, for example, the doorknob then get these elements at some point in a position relative to each other, in which they can interlock. During such a period of time, however, it is undesirable to permanently energize the corresponding drive device and to apply a force to the mechanism so that the coupling elements move into one another when the relative position is appropriate. This is partly due to the fact that the mechanical elements involved should be as low as possible and durable in the long term, on the other hand, that thereby the energy consumption increases significantly. Therefore, it is endeavored to have to apply the force required for a single switching operation or the required moment only once by means of the drive means. Furthermore, so-called force accumulators are then provided, which can store the force in the case of the collision of elements involved in the coupling process and then release it when the relative position of the elements involved changes.

In the prior art, various solutions have been proposed for such power storage. On the one hand there are mechanical solutions that often use spring elements as energy storage. In addition, there are also solutions that make use of magnetic fields.

Furthermore, it is endeavored in the prior art to be able to cover as large a variety of door geometries and fields of application with certain concepts for clutch arrangements or elements of lock cylinders. Also, it increasingly happens that lock cylinder systems must be changed, so that a variety of uses in retrofitting and repair area is required.

Therefore, in the prior art, in addition to lock cylinder systems that are designed specifically for a specific installation situation, also modular arrangements known about adapter pieces or shaft extensions in a variety of installation situations, such as one or two-sided operable doors, doors of different thickness, etc., can be used are.

This is how the document shows EP 1 736 622 A1 a lock cylinder with a lock cylinder housing, in which on one or both sides a rotatable by a knob knob shaft is rotatably supported, and with electrical and / or electronic and / or magnetic and / or electromagnetic and / or electromechanical and / or mechanical functional elements, to which at least one Closing element and at least one electromechanically operating coupling means which rotatably connects the closing element with the knob shaft due to an authorization signal and / or releases the knob shaft to actuate a lock, as well as include a transmitter that generates the authorization signal due to an input or an input signal. The knob shaft consists of at least two segments which are rotatably connected to each other, wherein at least one functional element is arranged in at least one segment.

The publication DE 103 24 690 A1 shows a closing device which has two clutches between a handle member and a cam, one of which is with a cylinder lock and the other with an electrical actuator on and to disengage. This makes it possible to obtain access to secured by means of the locking device rooms, regardless of the operability of the electrical actuator. The electrical actuating device has a transmission device, a torque limiting device, a spring accumulator and a self-locking device.

Furthermore, the document shows EP 2 275 628 A2 a lock cylinder with a housing main part, which rotatably supports a closing member and a drive shaft for rotating the closing member, a housing end piece, which has a penetrated by the drive shaft bearing eye and is mounted in variierbarebarer distance to the closure member on the housing main body and with an operating knob, which in variierbarer distance position for Closing member is attached to the free end of the drive shaft. The front side of the housing main part has two adjacent openings, one of which is associated with the bearing cavity and the other a mounting cavity, in which mounting cavity a mounting pin of the housing end piece inserted.

Furthermore, the document shows EP 2 314 809 A1 an engagement mechanism provided for electromechanical lock cylinders having a carriage that can be moved forward and backward by means of a spindle that is actuated by a motor. The carriage supports engagement pins which engage an engagement disc. A cam should be firmly connected to the engagement disc, so that their rotation actuates the corresponding lock. The movement of the carriage is guided along rods which are provided in the corresponding housing of a rotor in which the assembly with the motor and the carriage is accommodated. The dome pins are associated with springs that urge the pins into the engaged position when the pins are located opposite the holes in the disk.

The publication US 2008/0303290 A1 shows a lock with slide, which cooperates with an actuator assembly, wherein the sliding carriage is coupled to the actuator assembly via spring elements.

The publication DE 10 2004 056 989 A1 shows a locking device with a lock cylinder with a coupling between a handle and a cam, wherein the coupling is adjustable by an actuator which acts with the interposition of at least one storage element on the coupling.

Based on this, it is an object of the present invention to provide a clutch assembly with spring store, which is tamper-proof and easy and thus inexpensive to install and also suitable for use in various installation situations, especially for use in modular lock cylinder arrangements.

Therefore, it is proposed that the above-mentioned coupling arrangement be developed such that the switching element is a worm shaft which is rotatable about a switching axis by means of the drive means, wherein the switching element is fixed in relation to the switching axis axial direction, wherein the coupling arrangement further comprising a slide element, which is rotatably mounted and displaceable parallel to the shift axis, wherein the slide element engages with the worm shaft for converting a rotational movement of the worm shaft in a relative to the shift axis axial movement of the slide element, wherein the coupling device is supported on the slide element such in that the coupling device is displaceable by means of the drive device via the slide element parallel to the shift axis, and wherein the coupling device is supported on the slide element by means of a first spring element in a first axial direction with respect to the shift axis and in a second axial direction, in particular the opposite, with respect to the shift axis is directed to the first axial direction, is supported on the slide element by means of a second spring element, wherein the slide element is formed as a sleeve arranged on the worm shaft, said Sc slider element having a first flange at a first end of the sleeve and a second, detachable from the sleeve flange at a first end opposite the second end of the sleeve, wherein the flanges extend with respect to the switching axis in the radial direction.

Furthermore, a lock cylinder is proposed with such a coupling arrangement or one of its embodiments with a concentrically arranged to the housing component, wherein the housing and the component in the coupling position in the rotational direction are positively connected to each other, and in the Entkuppelposition the housing and the component in the direction of rotation disconnected from each other.

By means of the proposed clutch arrangement and the proposed lock cylinder, it becomes possible to provide a spring memory for the coupling device not only for the moving operation of the switching element from the uncoupling position to the coupling position, but also to provide for the moving operation of the switching element from the coupling position to the uncoupling position. Thus, the Aktuierungskräfte the drive device can be stored not only in the coupling process, but also during the uncoupling. This makes it possible to put the coupling device safely again in the uncoupling state. Even if in the uncoupling position, the coupling device should possibly be jammed due to high frictional forces, the force of the drive device would be stored and, for example, a handling device of a lock cylinder is released again, the stored forces in the spring memory are used to automatically reach the uncoupling position with a drop in friction forces. In this way, it is particularly avoided that the clutch assembly unintentionally remains in the dome position, which would allow a subsequent unauthorized opening a door in which a lock cylinder is installed.

Furthermore, the forces of the first spring element and the second spring element act directly against each other, so that in the dome position and the uncoupling position, the coupling device is force-free and no holding forces of the drive means for holding either the dome position or Entkuppelposition are required. Thus, an overall energy requirement of the drive device is minimized.

Finally, the design allows a simpler and more cost-effective construction, since the slide element is occupied directly by the first spring element and the second spring element with force accumulators in both axial directions. Regardless of the design of the coupling device, for example, regardless of the number of any provided axial pins, thus only two spring elements or a single spring element per provided with a force storage movement direction are provided.

This also allows an axially compact design, since the slider element can be offset directly on the worm shaft in the axial direction.

In this way, as will be explained in more detail below, it is possible to arrange the adjusting disk and the first spring element and the second spring element on the sleeve. Through the detachable second flange, these can be pushed onto the sleeve and then secured by means of the second flange in its mounted position.

The object initially posed is therefore completely solved.

In one embodiment of the coupling arrangement can be provided that the housing is formed as a cylindrical hollow shaft, wherein the housing extends along a longitudinal axis, wherein the switching axis is the longitudinal axis or a straight line parallel to the longitudinal axis, and wherein the housing is a perpendicular to the Having longitudinal axis extending end face.

In this way, the clutch assembly may be provided as, for example, a module for use in a modular knob shaft. The installation in Knaufwellen or lock cylinder arrangements for use in fixed installation situations is particularly easy in this way possible. The coupling direction parallel to the longitudinal axis is achieved by the parallelism of the indexing axis with the longitudinal axis. In this way it is possible to design the coupling arrangement such that it is coupled over the end face. This is also advantageous in particular for use in modular lock cylinder arrangements, since a selective coupling with elements adjoining in the axial direction is made possible. Apart from that, it is of course possible in principle that the switching axis is oblique or perpendicular to the longitudinal axis.

In one embodiment of the clutch assembly can be provided that the end face is a coupling surface of the clutch assembly, wherein at least a portion of the coupling device in the dome position with respect to the longitudinal axis protrudes eccentrically from the end face and is withdrawn in the uncoupled position in the housing.

In this way, it is thus provided that a form-locking coupling and a subsequent element in the axial direction can be brought about in the rotational direction via the coupling arrangement, which protrudes from the end face in the coupling position. In the decoupled position, this portion of the clutch assembly is retracted into the housing so that there is no clutch with the adjacent member and as far as the clutch assembly or housing can be freely rotatable.

In a further embodiment it can be provided that the coupling device is rotatably mounted and displaceable parallel to the shift axis on the housing.

It is a particularly compact construction in the radial direction possible by the housing is formed such that it can rotatably support the coupling device, but displaceable parallel to the shift axis.

In a further embodiment of the coupling arrangement can be provided that the coupling device is an adjusting disc with at least one pin element which is coupled with respect to the switching axis axial direction with the adjusting disc. In particular, the at least pin member may be eccentric with respect to the indexing axis, i. not coaxial with the switching axis, be arranged.

In this way it becomes possible to bring about a positive coupling in the direction of rotation by means of the at least one pin element in the coupling position. In principle, a plurality of pin elements can also be provided, which can be evenly distributed, in particular in the circumferential direction. In this way, the transferable forces can be increased. By the arrangement, the advantage is provided at the same time that all pin elements are coupled to a single adjusting disc and are moved together with the adjusting disc. All pin elements can also be provided by means of the first and the second spring element in the two axial directions with a spring memory. Individual spring accumulators for each pin element can thus be avoided, which simplifies the construction and reduces the assembly costs.

In a further embodiment it can be provided that each pin element has a circumferential groove, with which the at least one pin element is inserted in a recess on an outer periphery of the adjusting disc.

In this way, a particularly simple assembly of the pin elements is possible. The pin elements are then mounted radially inward in the recess on the outer circumference of the adjusting disc. Radially outside, they can then be mounted directly on the housing.

In a further embodiment it can be provided that the adjusting disc has an inner recess, wherein the slider element is guided through the Innausnehmung, so that the adjusting disc is guided in respect to the switching axis axial direction slidably on the slider element.

In this way it is possible to arrange in axial compact design, the slide element and the adjusting disc on axially the same height. The adjusting disc is mounted in a rest position approximately centrally on the slide element. In each axial direction is then followed by the first and second spring element, which is supported on an end flange of the slider element. Radially outside the adjusting disk is then coupled with at least one pin element, which can be passed in this way past the respective spring element and flange of the slider element through the end face.

In a further embodiment it can be provided that the first spring element and the second spring element are each formed as a frusto-conical helical spring.

In this way, the entire arrangement can build axially even more compact, since the spring elements in compression in each case move the individual threads into one another.

In a further embodiment, it may be provided that the slide element extends through the first spring element and the second spring element, wherein each of the spring elements applied loosely or with a bias on the slide element formed as a sleeve between a relative to the shift axis in the radial direction extending flange the slider element and the adjusting disc is arranged.

In this way, the compact axial design as stated above is brought about. In principle, it can be provided that the adjusting disk is force-free or substantially force-free between the first spring element and the second spring element in a rest position, which occupies it in the dome position as well as in the uncoupling position. Of course, it can also be provided that the first spring element and the second spring element are each subjected to a bias in the rest position. In particular, it can be provided the first spring element and the second spring element have identical spring characteristics.

In a further embodiment of the coupling arrangement can be provided that the sleeve has a recess, wherein the second releasable flange has an extension which projects through the recess into an interior of the sleeve and engages with the worm shaft, in particular with a track of the worm shaft engages.

In this way it becomes possible to mount the detachable flange very easily. By simply attaching the detachable flange on the sleeve thus assembly can be achieved. In principle, it can be provided that each leg section additionally has an inward-pointing projection which can engage in a correspondingly formed in a respective groove bottom recess. In this way, the detachable flange can be quasi clipped. In particular, the releasable flange may be formed from a plastic.

In a further embodiment it can be provided that the sleeve has a recess, wherein the second releasable flange has an extension which projects through the recess into an interior of the sleeve and engages with the worm shaft.

This extension thus extends through the sleeve in the interior. It thus virtually forms an internal thread that can interlock with the thread of the worm shaft. In this way, it is possible to first push the sleeve on the worm shaft to push all other items such as adjusting disc and first spring element and second spring element on the sleeve and then aufzustecken the second releasable flange. In this way, not only the first spring element, the second spring element and the adjusting disc are secured on the sleeve between their flanges in the axial direction, but also the sleeve or the slider element with the worm thread engaged. The components can then no longer fall apart in the axial direction. This allows a particularly simple assembly assembly.

In a further embodiment it can be provided that the coupling device has two pin elements.

In this way, a clutch can be reliably provided in the direction of rotation.

In a further embodiment it can be provided that the two pin elements are arranged diametrically opposite to each other with respect to the switching axis.

In this way a uniform distribution of force is provided throughout the assembly.

In a further embodiment it can be provided that the worm shaft has a track which has an end stop at each end.

In this way it is not possible for the extension to leave the lane. In this way it is also prevented that the slider element can fall off the worm shaft in the axial direction again. Furthermore, the advantage is provided in this way that is defined by the fixed limit stops the travel defined. In this way, a reference can be provided at step loss.

In a further embodiment it can be provided that the housing is divided into two parts in the longitudinal direction.

In this way, a particularly simple assembly of the entire coupling arrangement in the housing is made possible.

In one embodiment of the lock cylinder can be provided that the component is a cam or a shaft segment of a segmented knob shaft.

Thus, a coupling can be made both directly with a lock bit for actuating a lock and in any other shaft segment, such as an extension module or any other segment.

In a further embodiment of the lock cylinder can be provided that the housing is a module or a shaft segment of a segmented knob shaft of the lock cylinder, a handle of the lock cylinder or a knob shaft of the lock cylinder. The coupling arrangement can thus directly form a shaft segment or module of a segmented or modular knob shaft. Furthermore, the coupling arrangement can be arranged in a handle, for example a door knob, a door handle or another actuating device, or else the housing can be the knob shaft of the lock cylinder so that the knob shaft can be coupled to the front side with a component, for example the lock bit.

It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.

Fig. 1

eine schematische Ansicht einer Einbausituationen eines Schließzylinders mit möglichen Anordnungen einer Kupplungsanordnung;

Fig. 2

eine schematische Ansicht einer Einbausituation einer Kupplungsanordnung in einer modular aufgebauten Knaufwelle;

Fig. 3

eine Explosionsansicht einer Ausführungsform einer Kupplungsanordnung ohne Gehäuse;

Fig. 4

eine teilweise explodierte isometrische Ansicht einer Kupplungsanordnung mit Gehäuse;

Fig. 5a

die Kupplungsanordnung in einer Seitenansicht in einer Kuppelposition;

Fig. 5b

die Kupplungsanordnung in einer Seitenansicht in einer Entkuppelposition; und

Fig. 6

eine explodierte Ansicht der Elemente eines Schließzylinders mit eingebauter Kupplungsanordnung.

Embodiments of the invention are illustrated in the drawings and will be explained in more detail in the following description. Show it:

Fig. 1

a schematic view of a mounting situation of a lock cylinder with possible arrangements of a clutch assembly;

Fig. 2

a schematic view of a mounting situation of a clutch assembly in a modular knob shaft;

Fig. 3

an exploded view of an embodiment of a clutch assembly without housing;

Fig. 4

a partially exploded isometric view of a clutch assembly with housing;

Fig. 5a

the coupling assembly in a side view in a dome position;

Fig. 5b

the coupling assembly in a side view in a uncoupled position; and

Fig. 6

an exploded view of the elements of a lock cylinder with built-in clutch assembly.

Fig. 1 shows a schematic view of the arrangement of a lock cylinder 10 in a door 12. The lock cylinder is used, in the presence of a person, to allow the actuation of a lock 14 to open the door 12. The door 12 in this case has an outer side 18, is assumed in the present example that people want to gain access from here. Opposite the outer side 18 is an inner side 20, which constitutes a safe area in the present example.

Accordingly, on an outer side of the door 12, for example, a handle, such as an outer knob 22, arranged. In the present example, this outer knob 22 has a receiving device 24 and / or an input device 26, via which an authorization signal, for example from an RFID chip or an active wireless signal, can be received or via which, for example, a code can be typed. It is then evaluated whether the transmitted or entered code authorizes opening of the door 12 and, if so, opening of the door 12 is enabled.

To selectively provide for opening the door 12, it is contemplated that the outer knob 22 will couple with the closure member 16 in the direction of rotation via a knob shaft 32 in a dome position and not engage in a disengaged position. A provided between the outer knob 22 and the closing element 16 outer knob shaft is designated by the reference numeral 32. The knob shaft 32 extends within a lock cylinder housing 30 and rotates relative to the lock cylinder housing 30. On an inner side of the door 12 can also be a handle, such as an inner knob 28, may be provided, which in turn is coupled to an inner knob shaft 34 with the closing element 16. In the example shown, the inside 20 is safe. The inner knob 28 is therefore permanently coupled via the inner knob shaft 34 with the closing element 16. It is therefore always possible to actuate the closing element 16 by means of the inner knob. In contrast, however, a coupling arrangement 40 is provided between the outer knob 22 and the closing element 16. This is the outer knob 22 only rotatably coupled with the closing element 16, if an authorization exists. For the clutch assembly 40 thus there are two states. First, a Entkuppelposition in which the outer knob 22 is freely rotatable about an axis of rotation 38 of the knob shaft 32, and a dome position in which the outer knob 22 is rotatably coupled to the closing element 16.

For the arrangement of coupling arrangement 40 there are several possible positions, which are designated 40, 40 'and 40 "For example, the coupling arrangement can be arranged directly in the outer knob 22 and couple it with the knob shaft 32 or decouple. Here, the clutch assembly 40 effectively makes or disables two partial shafts of the clutch shaft 32. Further, of course, the clutch assembly, as indicated at 40 ", may directly contact be arranged one end of the coupling shaft 32 and optionally directly non-rotatably engage in the closing element 16 or be decoupled from this. This results, for example, with 36, 36 'and 36 "possible positions for coupling surfaces.

An axial direction with respect to the axis of rotation 38 is in the Fig. 1 schematically denoted by X. The corresponding radial plane then results from the spatial directions Y and Z.

The coupling surfaces thus extend in the illustrated example thus perpendicular to a rotation axis 38 of the knob shaft. In the prior art, couplings over a circumferential surface are also known in principle. Furthermore, it is also known, instead of a rotationally fixed coupling or decoupling of elements by means of a coupling arrangement optionally a block shaft 32 against a lock cylinder housing 30 to block or release. These obstructions also take place via a corresponding lateral surface. A knob shaft 32 thus generally has the shape of a cylinder. This knob shaft is rotatably mounted in a lock cylinder housing. In principle, it is also possible to store a knob shaft directly, that is to say without lock cylinder housing 30, in a door 12. However, the clutch assemblies contemplated herein are particularly suitable for use in coupling to end surfaces of the respective elements. Here, the peculiarity is that the respective coupling surfaces 36, 36 'and 36 "are aligned perpendicular to a rotation axis 38. A significant advantage provided thereby is the compatibility with any doors 12, since structural measures in a radial plane within the Door 12 are not necessary.

Of course, it is quite possible in the embodiments that also the inner knob 28 is coupled to the closing element 16 by means of a coupling arrangement 40 in the manner described above. In this case, then both the inside and the outside actuating the door 12 is linked to a permission.

The Fig. 2 shows a further possible use of a clutch assembly 40 in the context of a modular lock cylinder 10 '. Identical elements are identified by the same reference numerals and will not be explained again below.

Once again, by means of an outer knob 22 in a dome position, a closing element 16 for actuating the lock 14 is to be coupled. For this purpose, a multi-module knob shaft 32 is provided. For example, a module of the knob shaft 32 may be the clutch assembly 40. Another module 46 may carry the closure member 16. Another module 44 may be formed as an extension module depending on the thickness of the door 12 to couple the modules 40 and 46 rotatably. The clutch assembly selectively couples via the clutch surface 36 to the adjacent module 44. The clutch assembly 40 may then be mounted in or on the outside knob 22, for example. In principle, the modules 40, 44 and 46 of the knob shaft 32 can be arranged directly in the door 12. You can also choose, similar to the representation in the Fig. 1 be surrounded by a lock cylinder housing 30.

Similarly, another internal knob shaft 34 is formed of two modules. A module 48 couples with the inner knob 28 and may for example have a standard length. Furthermore, an extension module 42 is used to adapt to a thickness of the door 12. Of course, similar, as in the Fig. 1 explained, the inner knob shaft 34 may be provided with an electromechanical coupling of order 40, even if an authorization 20 is to be queried on an inner side.

An embodiment of the coupling arrangement 40 will be described below in connection with FIGS Fig. 3 to 5a and 5b explained.

The Fig. 3 shows an embodiment of the clutch assembly 40th

In the illustrated embodiment, the coupling arrangement 40 has an electrical connection 50 via which it can be coupled, for example, to an input device 26 and / or a receiving device 24. Furthermore, a first electronics 52 and a second electronics 54 are provided. The first electronics 52 and the second electronics 54 are connected by means of a flat conductor 56. In a gap 58 between the first electronics 52 and the second electronics 54 may be arranged a Bohrschutz to which the flat conductor within a housing (in the Fig. 3 not shown) is guided around. The electronics 52, 54 serve, for example, to control a drive device 60 and / or to check an authorization signal entered via the electrical connection 50 and, if applicable, to control the drive device 60. For example, it may be provided here to arrange safety-relevant assemblies of the electronics in the second electronics 54, ie behind a drilling protection provided in the intermediate space 58. In this way, the relevant assemblies are in a safe area. In addition, it is prevented by means of the Bohrschutzes that the drive device 60 is drilled and energized with an external power supply and in this way the clutch assembly 40 can be switched.

The drive device 60 may be an electric motor, in particular a stepper motor.

The drive device 60 drives a switching element 62. The switching element 62 is rotatable about a switching axis 66. The switching element 62 is designed as a worm shaft 64. In an outer circumference of the worm shaft 64 thus a spirally extending track 106 is cut. The track 106 has fixed end stops 107, 107 '.

The worm shaft 64 serves to implement a rotational movement 67 about the switching axis 66 of the switching element 62 in an axial direction X relative to the switching axis 66. For this purpose, a slide element 68 is provided. The slider element 68 has a sleeve 82 which encloses an inner space 104. In an assembled state, the worm shaft 64 is inserted into the inner space 104. The slide member 68 is thus rotatably in the housing (not shown), but slidably supported in the axial direction X on the worm shaft 64. The sleeve has a first end 86 to which a first flange 84 is provided. This first flange 84 serves to support on the housing (not shown). Furthermore, the sleeve 68 has a second end 88 opposite the first end 86. At this second end 88, two grooves are provided, of which a groove 98 is visible in the illustrated view. The groove extends perpendicular to the switching axis 66 in the radial direction. In the view shown in the Y direction. Furthermore, this is second end 88 a recess 102 is provided which is an opening in the interior 104. The slider element 68 has a second releasable flange 90. The detachable flange 90 has two leg portions 92 ', so that results in a substantially U-shaped profile in cross section. The detachable flange 90 can be pushed into the grooves 98 in the negative Y direction by means of the legs 92, 92 '. In addition, each of the legs 92, 92 'have a projection 94 which snaps into a further recess or depression on a groove bottom of the groove 98. In this way, it is possible to fix the elements of a coupling device 70 along the X direction, ie, axially parallel to the switching axis in both directions on the sleeve 68. The second releasable flange 90 also has an extension 96. This extension 96 is designed such that it protrudes in an assembled state through the recess 102 into the inner space 104. The extension 96 then engages with the track 106 of the worm shaft 64 into each other. In this way, it is possible to move the sleeve 68 in the axial direction on the switching element 62 by the switching element 62 and the worm shaft 64 is rotated about the switching axis 66 becomes. Since the coupling device 70 is located on the sleeve 82 between the two flanges 84 and 90, the coupling device is also displaced in the axial direction X or parallel to the switching axis 66.

The coupling device 70 has an adjusting disk 72. The adjusting disc 72 has an inner recess 73. The inner recess 73 is dimensioned such that the adjusting disk 72 can be arranged displaceably on the sleeve 82 in the axial direction. The dome device 70 is within the housing (in the Fig. 3 not shown) rotationally fixed and in the axial direction, that is arranged parallel to the switching axis 66, displaceable on the sleeve 82. The adjusting disk 72 has two recesses 110, 110 'in its outer circumference. In these recesses, a first pin member 74 and a second pin member 76 are inserted. Each of the pin members has a circumferential groove 108. With this can be inserted according to the respective axial pin in the recess in the outer circumference. Each of the pin members 74, 76 may then be radially outward on the housing (in the Fig. 3 not shown), so that it is securely held in the recess 110, 110 ', but together with the adjusting disc 72 in the axial Direction X, or parallel to the switching axis 66 is displaceable. Both pin elements 74, 76 are thus displaceable together, by means of the adjusting disc 72nd

The adjusting disk in turn is mounted floating on the sleeve 82. The adjusting disc 72 is supported in a first axial direction, namely in the negative X direction on the first flange 84 by means of a first spring element 78. The first spring element 78 is designed as a conical or frusto-conical helical spring. In a second axial direction, namely in the positive X direction, the adjusting disk 72 is supported on the second flange 90 by means of a second spring element 80. The second spring element 80 is configured as a frusto-conical or conical helical spring. The spring elements 78, 80 and the length of the sleeve portion 82 may be dimensioned such that the spring elements 78, 80 are not compressed in a basic position and thus, so to speak, rest loosely on the sleeve portion 82. However, it can also be provided that the first spring element 78 and the second spring element 80 are subjected to a certain bias, so are compressed by a certain Vorspannungsmaß to hold the adjusting disc 72 in a defined position in a basic position relative to the slide member 68. The first spring element 78 and the second spring element 80 may have identical spring characteristics in all embodiments.

Because of in the Fig. 3 Shown embodiment of the coupling arrangement, it is thus possible not only a rotational movement of the switching element 62 in the direction of rotation 67 in a movement of the pin members 74, 76 in the axial direction X implement, but also to provide a spring storage. For example, if the movement of the pin members 74, 76 blocked in a dome position, the slide member 68 moves despite everything in the axial direction X relative to the adjusting disc 72. In this case, the first spring element 78 is compressed. The applied force or energy is thus stored in the first spring element 78. If a movement of the pin members 74, 76 released in the axial direction X at a different rotational position of the coupling assembly 40 relative to a subsequent element 16, the spring 78 relaxes and thus moves the adjusting disc 72 together with the pin members 74 and 76 in the positive X direction. The same applies to the reverse movement from a dome position to the uncoupling position. In this case, for example, when the pin members 74, 76 due In spite of this, the slider element 68 is moved in the axial direction, namely in the negative X direction, in the case of a large friction in an adjacent element. The slider element 68 moves in the axial direction relative to the switching element 62 and also relative to the adjusting disc 72. In this case, the second spring element 80 is then compressed. In this now the applied force is stored. If the pin elements 74, 76 are then released, the second spring element 80 relaxes and displaces the adjusting disk 72 in the negative X direction and thus also the pin elements 74, 76 in the uncoupling position.

In this way, in both axial directions (positive X direction and negative X direction), i. provided in both directions parallel to the switching axis 66, a force storage.

Fig. 4 shows the coupling assembly 40, wherein in the Fig. 3 assembled elements are assembled. Identical elements are identified by the same reference numerals and will therefore not be explained again. For reasons of clarity, only the electrical connection 50, the drive device 60 and the pin elements 74, 76 are designated.

The coupling arrangement has a housing 112. In the illustrated embodiment, the housing 112 is configured as a cylindrical sleeve member extending along a longitudinal axis 126. In the longitudinal direction, the housing 112 is divided into two parts. It thus has a first housing part 114 and a second housing part 116. However, the configuration of the housing 112 is to be understood merely as an example. The housing can in principle have any shape, in particular it can also be a section of a knob shaft 32 or above a section of a housing of a knob 22, 28. The two housing parts 114 and 116 can be assembled, which simplifies assembly of the clutch assembly 40. On an outer periphery may be provided a first section 120 of defined cross-section, over which a ring 118 can be slid with a corresponding cross-section to hold the two housing halves 114 and 116 together and at the same time serve as sliding bearings. Furthermore, at one end of the housing, a further section 124 of defined cross-section may be provided over which a Correspondingly configured cover element 122 can be pushed. This can also serve to hold the housing halves 114, 116 and / or as a sliding bearing. Thus, the coupling assembly 40 on an end face 128, which forms a coupling surface 36. In the end face two recesses 130, 132 are provided, through which the pin members 74, 76 can pass. In a dome position, thus, a portion 134 of the pin member 74 and a portion 136 of the pin member 76 protrude from the end face 128.

In the Fig. 5a the clutch assembly 40 is shown in a side view in a dome position 150. Like elements are identified by like reference numerals and will not be explained again. In the Fig. 5a Furthermore, a drill protection 154 is shown. Such a drill protection 154 can usually be formed as a cone. The tip of the cone then points in the negative X-direction, ie away from the drive device 60. The drive device 60 is fixed against rotation on the housing 112.

In contrast, in Fig. 5b the clutch assembly 40 is shown in a uncoupled position. As can be seen in a comparison, the pin elements 74, 76 are retracted, so that the sections 134, 136 no longer protrude from the end face 128. The coupling arrangement 40 can then be released or the housing 112 can then rotate freely relative to an adjacent element 16 or a further shaft segment 42 to 48.

The Fig. 6 shows an embodiment of a lock cylinder 10 with the coupling assembly 40 in the assembled state. The remaining elements of the lock cylinder 10 have exploded. Identical elements are identified by the same reference numerals and will therefore not be explained again.

The lock cylinder housing 30 may be formed in particular as a profile cylinder and has a threaded bore 160, with which, for example, the lock cylinder by means of a screw relative to a lock 14 and the door 12 can be attached. The closing element 16 is designed as a closing nose and has Dome recesses 167, 168, in which the pin members 74, 76 can engage with the closing element 16 for rotationally fixed coupling of the clutch assembly 40. Evident are two of a total of six distributed over the circumference dome openings 167, 168. Of course, for example, eight or ten recesses can be distributed over the circumference. In this case, two recesses with respect to the switching axis 66 diametrically opposed to each other, as well as the pin members 74, 76. In this way, the angular extent by which the clutch assembly 40 must be rotated to take the dome position with the closing element 16, reduced. Furthermore, ring members 164, 165 may be provided to seal, for example, the clutch assembly 40 to the closure member 16 and / or to slide.

Claims (18)

1. Coupler arrangement (40) for a locking cylinder (10), having a housing (112), a switching element (62) which is arranged in the housing (112), a drive device (60) which is arranged in the housing (112), and having a coupling device (70) which can be moved between a coupled position (150) and a decoupled position (152), the shifting element (62) being a worm shaft (64) which can be rotated about a switching axis (66) by means of the drive device (60), the switching element (62) being fixed in the axial direction with regard to the switching axis (66), the coupler arrangement (40) having, furthermore, a slide element (68) which is mounted fixedly so as not to rotate and such that it can be moved parallel to the switching axis (66), the slide element (68) engaging into the worm shaft (64) for converting a rotational movement of the worm shaft (64) into an axial (with regard to the switching axis (66)) movement of the slide element (68), the coupling device (70) being supported on the slide element (68) in such a way that the coupling device (70) can be moved over the slide element (68) parallel to the switching axis (66) by means of the drive device (60), the coupling device (70) being supported in a first axial direction (with regard to the switching axis (66)) on the slide element (68) by means of a first spring element (78), and being supported in a second axial direction (with regard to the switching axis (66)) on the slide element (68) by means of a second spring element (80), the slide element (68) being configured as a sleeve (82) which is arranged on the worm shaft (64), the slide element (68) having a first flange (84) at a first end (86) of the sleeve (82) and a second flange (90) which can be released from the sleeve (82) at a second end (88) of the sleeve (82), which second end lies opposite the first end (86), the flanges (84, 90) extending in the radial direction with regard to the switching axis (66).
2. Coupler arrangement according to Claim 1, characterized in that the housing (112) is configured as a cylindrical hollow shaft, the housing (112) extending along a longitudinal axis, the switching axis (66) being the longitudinal axis or a straight line which is parallel to the longitudinal axis, and the housing (112) having an end face which extends perpendicularly with respect to the longitudinal axis.
3. Coupler arrangement according to Claim 2, characterized in that the end face is a coupler face of the coupler arrangement, at least one section of the coupler device protruding eccentrically out of the end face with regard to the longitudinal axis in the coupled position (150), and being withdrawn into the housing (112) in the decoupled position (152).
4. Coupler arrangement according to one of Claims 1 to 3, characterized in that the coupling device (70) is mounted fixedly on the housing (112) so as to rotate with it and such that it can be moved parallel to the switching axis (66).
5. Coupler arrangement according to one of Claims 1 to 4, characterized in that the coupling device (70) is an adjusting disc (72) with at least one pin element (74, 76) which is coupled to the adjusting disc (72) and can be moved together with the adjusting disc (72) in the axial direction with regard to the switching axis (66).
6. Coupler arrangement according to Claim 5, characterized in that each pin element (74, 76) has a circumferential groove (108), by way of which the at least one pin element (74, 76) is inserted into a recess (110) on an outer circumference of the adjusting disc (72).
7. Coupler arrangement according to Claim 5 or 6, characterized in that the adjusting disc (72) has an inner recess (73), the slide element (68) being guided through the inner recess (73), with the result that the adjusting disc (72) is guided on the slide element (68) such that it can be displaced in the axial direction with regard to the switching axis (66).
8. Coupler arrangement according to one of Claims 5 to 7, characterized in that the slide element (68) extends through the first spring element (78) and the second spring element (80), each of the spring elements (78, 80) being arranged loosely or loaded with a prestress on the slide element (68) which is configured as a sleeve (82), between a flange (84, 90) of the slide element (68), which flange (84, 90) extends in the radial direction with regard to the switching axis (66), and the adjusting disc (72).
9. Coupler arrangement according to one of Claims 5 to 8, characterized in that the coupling device (70) has two pin elements (74, 76).
10. Coupler arrangement according to Claim 9, characterized in that the two pin elements (74, 76) are arranged with respect to one another in a diametrically opposed manner with regard to the switching axis (66).
11. Coupler arrangement according to one of Claims 1 to 10, characterized in that the sleeve (82) has two grooves (98) in its outer circumference, which grooves (98) run parallel to one another and run perpendicularly with respect to a longitudinal axis of the sleeve (82), the second releasable flange (90) having a substantially U-shaped cross section with two limb sections (92), in each case one limb section (92) being pushed into a groove (98).
12. Coupler arrangement according to one of Claims 1 to 11, characterized in that the sleeve (82) has a cut-out (102), the second releasable flange (90) having a projection (96) which protrudes through the cut-out (102) into an interior space (104) of the sleeve (82) and engages into the worm shaft (64).
13. Coupler arrangement according to one of Claims 1 to 12, characterized in that the first spring element (78) and the second spring element (80) are configured in each case as a frustoconical helical spring.
14. Coupler arrangement according to one of Claims 1 to 13, characterized in that the worm shaft (64) has a track (106) which has an end stop at each end.
15. Coupler arrangement according to one of Claims 1 to 14, characterized in that the housing (112) is split in two in the longitudinal direction (126).
16. Locking cylinder (10) having a coupler arrangement (40) according to one of Claims 1 to 15, having a component which is arranged concentrically with respect to the housing (112), the housing (112) and the component (16, 42, 44, 46, 48) being connected to one another in a positively locking manner in the rotational direction (67) in the coupled position (150), and the housing (112) and the component (16, 42, 44, 46, 48) being decoupled from one another in the rotational direction (67) in the decoupled position (152).
17. Locking cylinder according to Claim 16, characterized in that the component is a locking cam (16) or a shaft segment (42, 44, 46, 48) of a segmented knob shaft (32).
18. Locking cylinder according to Claim 16 or 17, characterized in that the housing (112) is a shaft segment (42, 44, 46, 48) of a segmented knob shaft (32) of the locking cylinder (10), a handle (22) of the locking cylinder (10), or a knob shaft (32) of the locking cylinder (10).

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