DE102014104793B4 - Coupling arrangement for lock cylinder with spring - Google Patents

Abstract

The present invention relates to a coupling arrangement (40) for a lock cylinder (10), comprising a housing (58), a switching element (90) arranged in the housing (58), a drive device (60) arranged in the housing (58) and having a A coupling device (120) displaceable between a coupling position (116) and a disengaging position (118), wherein the switching element (90) is rotatable about a switching axis (82) by the drive means (60), the switching element (90) being movable with respect to the switching axis (82) is fixed in the axial direction, wherein the switching element (90) as a shaft (92) is formed, and wherein the shaft (92) rotatably displaceable on the shaft (92) relative to the switching axis (82) axial direction displaceable Coil spring (96) is connected, wherein the coupling arrangement comprises two stops for limiting a running path of the coil spring (96) on the shaft (92), wherein the coupling device (120) has a carrier element (102), the dre hfest and parallel to the switching axis (82) is mounted displaceably, wherein the carrier element (102) with the coil spring (96) for converting a rotational movement (122) of the switching element in a relative to the switching axis (82) axial movement of the carrier element engages, and wherein the dome means (120) further comprises at least two pin members (74, 76), each pin member (74, 76) being movably coupled to the carrier member (102) in parallel with the indexing axis (82).

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 WO 2011/022855 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, an actuator, such as a handle or doorknob, is rotatably connected by means of the clutch assemblies 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 of the uncoupled 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 back into a position relative to each other, in which they can interlock. During such a period, 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 are known, via adapter pieces or shaft extensions in a variety of installation situations, such as on or two-sided operable doors, doors of different thickness, etc., can be used.

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.

In the field of clutch arrangements with spring store shows the aforementioned document WO 2011 022 855 A1 a closing device with a rotor mounted in a stator, wherein the rotor is coupled by an electronically controlled drive with an output element and / or lockable against the stator, and wherein the electrically controlled drive is arranged in the rotor and with a rotational movement of the rotor with rotates, characterized in that the electric drive is coupled via a spring element with a coupling element for coupling the rotor to the output element or for blocking the rotor against the stator, such that a movement generated by the electric drive by the spring element on the coupling element is transferable.

Furthermore, the document shows WO 2011/131163 A1 a lock cylinder assembly consisting of a housing with a cam, at least a first actuating knob and an electromechanical coupling. The clutch has nut pieces in the actuating knob and in the cam and includes an axially displaceable first father piece, which is arranged in the engaged state rotationally positive fit in both nut pieces of actuating knob and cam and is arranged in the uncoupled state only in one of the two nut pieces of actuating knob and cam ,

Furthermore, the document shows WO 98/15703 A1 an electromechanical locking arrangement for operating a closing means, which is installed in a door and having a manually operable manipulation means. The closure assembly has a functional unit for mounting on the door separate from the closure means. The functional unit has an electric drive means, which is linked to a coupling agent. The coupling means is coupled by the electric drive means between a first extreme position in which the manually operable manipulation means is decoupled from the closure means and a second extreme position in which the manually operable manipulation means is coupled to the closure means.

In this way, a more compact design can also be achieved in the radial direction, since the recessed portion can be used to dispose a portion of the drive device. The publication EP 1 122 385 A2 shows a locking mechanism with a locking pin which is movable between a retracted and advanced position. The publication DE 601 27 350 T2 shows a lock with internal coupling. The publication US 2005/0 050 928 A1 shows an electronic clutch assembly for a locking system.

It is therefore an object of the present invention to provide an improved clutch arrangement with mechanical spring accumulator which is easy to install and manipulation-proof and, moreover, is suitable for use in various fields of application, in particular in modular clutch shafts.

It is therefore proposed to further develop the initially mentioned coupling arrangement such that the switching element is rotatable about a switching axis by means of the drive device, wherein the switching element is fixed in axial direction with respect to the switching axis, wherein the switching element is formed as a shaft, and wherein the shaft rotatably with a is connected to the shaft in respect of the switching axis axial direction displaceable coil spring, wherein the coupling device comprises a support member which is rotatably mounted and displaceable parallel to the shift axis, wherein the support member with the coil spring for converting a rotational movement of the switching element in a relative to the shift axis Movement of the carrier element engages, and wherein the coupling device further comprises at least two pin elements, wherein each pin element is movably coupled together with the carrier element parallel to the shift axis, and in particular wherein the Coupling arrangement two stops for Limiting a running path of the helical spring on the shaft, the carrier element partially surrounds the switching element and a portion of the drive device is disposed in a recessed area of the carrier element, wherein the coupling arrangement has two stops for limiting a travel of the helical spring on the shaft.

Furthermore, the document shows US 2012/0006082 A1 an electric lock in which a handle is engaged by means of an actuator with a block above when correcting password input.

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.

Furthermore, a clutch arrangement is provided for a lock cylinder, comprising a housing, a switching element arranged in the housing, a drive device arranged in the housing and a coupling device which can be displaced between a coupling position and a uncoupling position, wherein the switching element is displaced by a drive means Shifting shaft is rotatable, wherein the switching element is fixed in respect to the switching axis axial direction, wherein the switching element is formed as a shaft, and wherein the shaft is rotatably connected to a displaceable on the shaft in relation to the switching axis axial direction coil spring, wherein the coupling device is a carrier element has, which is rotatably mounted and displaceable parallel to the shift axis, wherein the carrier element with the coil spring for converting a rotational movement of the switching element in a relative to the switching axis axial movement of the carrier element ineinanderg matures, and wherein the coupling device further comprises at least two pin elements, wherein each pin member is movably coupled together with the support member parallel to the shift axis, that the support member has an outer peripheral surface, wherein each pin member has a recess with a on the outer peripheral surface relative to the Shifting axis radially outward outstanding projection interlocking.

In this way, via the coupled with the drive means shaft and on the shaft in the axial direction relative to the shift axis displaceable coil spring a spring accumulator is provided both for movement of the clutch assembly from the uncoupling position to the dome position and for movement from the dome position to the uncoupled position , About the engaging in the coil spring support member quasi a thread for converting the rotational movement is provided in a movement in the axial direction. Thus, not only an implementation of the direction of movement but also a spring storage of the drive energy applied by the drive device can be provided by means of compact design. Furthermore, it is possible by means of the carrier element to provide the spring storage together for a plurality of pin elements. In this way, it is avoided that a separate spring storage or energy storage must be provided for both directions of movement for each of the pin elements.

In this way it is possible in a compact design and easy to assemble, with respect to the switching axis axial direction by means of the two pin elements to produce a non-rotatable and positive connection to another element in the dome position. The clutch assembly can then be rotated together with this further element. In the uncoupling position, the coupling arrangement remains freely rotatable relative to this further element, for example a closing element for activating a lock.

In this way, a more compact design can also be achieved in the radial direction, since the recessed portion can be used to dispose a portion of the drive device.

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 cylinders, since selective coupling with elements or modules adjoining in the axial direction is made possible.

In a further embodiment it can be provided that the end face a Clutch surface of the clutch assembly is, each pin member of the coupling device in the dome position with respect to the longitudinal axis eccentrically protrudes at least partially from the end face and is retracted in the uncoupled position in the housing.

In this way, it is thus provided that, via the coupling arrangement, which protrudes from the end face in the coupling position, a positive-locking coupling with an element adjoining in the axial direction can be brought about in the direction of rotation. 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 its 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.

In this way it is possible to use the housing directly for supporting the coupling device. This further allows a compact design of the entire clutch assembly.

In a further embodiment it can be provided that the carrier element at least partially surrounds the switching element and the helical spring radially outward relative to the switching axis, wherein the carrier element has an inner circumferential surface, wherein the inner circumferential surface has an internally threaded portion which engages with the helical spring.

In particular, it is possible that the internal thread portion is formed only as a projection which engages with a thread of the coil spring. In this way, the carrier element and the coil spring can be arranged in the axial direction completely overlapping at the same height. The compactness of the design in the axial direction can be increased.

In a further embodiment it can be provided that the carrier element completely surrounds the switching element.

In this way, a particularly secure engagement of the female threaded portion and the thread of the coil spring can be achieved.

In a further embodiment it can be provided that the carrier element has an outer peripheral surface, wherein each pin element has a recess which engages with a projecting on the outer peripheral surface with respect to the shift axis radially outwardly projecting projection.

In this way it becomes possible to couple the carrier element radially to the outside with each of the pin elements. The coupling takes place in a form-fitting manner with respect to the switching axis axial direction. Thus, a safe displacement of the pin elements in the axial direction is possible. Furthermore, it is thus possible that all pin elements can be moved by means of a single carrier element. The spring accumulator thus acts together for all pin elements. Separate spring accumulators for each pin element are thus avoided.

In a further embodiment, it can be provided that the clutch arrangement has a gearbox for replacing an input rotational speed of the drive device with an output rotational speed of the shaft.

Incidentally, the drive device may be designed in particular as a DC motor. By means of the transmission, it is then possible to implement a speed of the drive device suitable, so that there is a desired speed of movement of the thread of the coil spring relative to the female threaded portion. In addition, the axial pitch achieved per revolution can be set via the corresponding thread pitches. In this way, by suitable design, a rapid implementation of the rotational movement of the drive means can be provided in a desired axial offset.

In a further embodiment it can be provided that the drive device is rotatably coupled to a pinion of the transmission, wherein the pinion meshes with a rotatably connected to the shaft wheel.

The transmission can thus be provided simply by means of, for example, a spur gear toothing. This makes the entire structure inexpensive and easy to install.

Furthermore, it can be provided in one embodiment that the drive device and the shaft are arranged at least partially in relation to the switching axis radial direction side by side.

In other words, the shaft and the drive device overlap each other in the axial direction. This results in a very compact design in the axial direction, in which the two elements drive means and shaft are virtually arranged one above the other via the coupling by means of a pinion-wheel connection.

In a further embodiment of the coupling arrangement, it can be provided that the shaft, the carrier element, the at least two pin elements and the drive device are arranged in the housing in such a way that they at least partially overlap one another in an axial direction with respect to the switching axis.

As will be explained clearly below in connection with the figures, the proposed clutch arrangement in the axial as well as in the radial direction can be kept very compact. As explained above, through the clutch via the transmission, the shaft and the drive device can overlap each other in the axial direction. The coil spring, which is designed as a spring, is already guided on the shaft. Also, the support member surrounds the shaft and is coupled via radially outwardly disposed projections in the inner recesses of the pin elements, all movement conversions and spring storage thus takes place in the same axial portion of the clutch assembly in which all elements overlap each other.

In one embodiment, it may be provided that the carrier element is formed from plastic.

In this way, not only a weight saving can be achieved, but also the carrier element with appropriate hardness and low friction coefficient for any sliding movements on the housing may be formed.

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

These two pin elements can be perfectly sufficient to bring about a non-rotatable form-locking coupling with another element in the coupling position.

In a further embodiment it can be provided that the housing is designed as a cylindrical hollow shaft, wherein the housing extends along a longitudinal axis, and wherein the two pin elements are arranged diametrically opposite to each other with respect to the longitudinal axis.

In this way, by means of two pin elements, a rotationally fixed form-fitting connection to an adjacent element can be provided with particular certainty, the force input occurring symmetrically with respect to the longitudinal axis.

In a further embodiment it can be provided that the switching axis and the longitudinal axis are not identical.

Depending on the geometric conditions, the necessary radial size can be minimized by means of this design.

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 wave segment, for example an extension module or any other segment or module.

In a further embodiment of the lock cylinder can be provided that the housing is 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.

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

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

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

3 an isometric view of an embodiment of a clutch assembly;

4 an isometric view of the arrangement for implementing the movements and power storage;

5a an isometric view of the clutch assembly in 3 with regard to the components below the drive device in a dome position;

5b an isometric view of the clutch assembly in 3 with respect to the components below the drive means in a uncoupling position; and

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

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's authorization, to operate a lock 14 to allow to the door 12 to open. The door 12 here has an outside 18 from which it is assumed in this example that people want to gain access from here. The outside 18 opposite is an inside 20 which represents a safe area in the present example.

Accordingly, on an outside of the door 12 For example, a handle, such as an outside knob 22 arranged. This outside knob 22 in the present example has a receiving device 24 and / or an input device 26 via which an authorization signal, for example from an RFID chip or another 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 to open the door 12 authorized and, if so, will open the door 12 allows.

To open the door 12 optionally provide, it is provided that the outer knob 22 over a knob shaft 32 in a dome position with the closing element 16 couples in the direction of rotation and does not engage in a uncoupling position. One between the outside knob 22 and the closing element 16 provided outer knob shaft is denoted by the reference numeral 32 designated. The knob shaft 32 runs inside a lock cylinder housing 30 and rotates relative to the lock cylinder housing 30 , On an inside of the door 12 can also be a handle, such as an inner knob 28 be provided, in turn, with an inner knob shaft 34 with the closing element 16 is coupled. In the example shown is the inside 20 for sure. The inner knob 28 is therefore permanently on the inner knob shaft 34 with the closing element 16 coupled. It is always possible, by means of the inner knob, the closing element 16 to press. In contrast, however, between the outer knob 22 and the closing element 16 a clutch assembly 40 intended. This should be the outside knob 22 only with the closing element 16 couple rotatably if an authorization exists. For the clutch assembly 40 There are thus two states. First, a Entkuppelposition in which the outer knob 22 free around a rotation axis 38 the knob shaft 32 is rotatable, and a dome position in which the outside knob 22 non-rotatable with the closing element 16 is coupled.

For the arrangement clutch assembly 40 There are several possible positions with that 40 . 40 ' and 40 '' are designated. For example, the clutch assembly directly in the outer knob 22 be arranged and this with the knob shaft 32 couple or uncouple. With the position 40 ' is a coupling arrangement referred to, within the knob shaft 32 is arranged. Here, the coupling arrangement ensures 40 almost for it, two partial waves of the clutch shaft 32 to engage or not. Furthermore, of course, the clutch assembly, as with 40 '' is designated, directly at one end of the coupling shaft 32 be arranged and optionally directly rotatably in the closing element 16 intervene or be decoupled from this. This results, for example, with 36 . 36 ' respectively. 36 '' possible positions for coupling surfaces.

An axial direction with respect to the axis of rotation 38 is in the 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 example shown perpendicular to a rotational axis 38 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 knob shaft 32 opposite a lock cylinder housing 30 to block or release. These obstructions also take place via a corresponding lateral surface. A knob wave 32 thus usually has the shape of a cylinder. This knob shaft is rotatably mounted in a lock cylinder housing. Basically, there is also the possibility of a knob shaft directly, ie without lock cylinder housing 30 in a door 12 to store. However, the clutch assemblies contemplated herein are particularly suitable for use in coupling to end surfaces of the respective elements. Here is the special feature that the respective coupling surfaces 36 . 36 ' and 36 '' perpendicular to one axis of rotation 38 are aligned. A major advantage provided by this is compatibility with any doors 12 , as structural measures in a radial plane within the door 12 are not necessary.

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

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

Again, by means of an outside knob 22 in a dome position a closing element 16 to operate the lock 14 be coupled. For this purpose, a multi-module knob shaft 32 intended. For example, a module of the knob shaft 32 the clutch assembly 40 be. Another module 46 can the closing element 16 wear. Another module 44 Can be used as an extension module depending on the thickness of the door 12 be trained to the modules 40 and 46 rotatably to couple. The clutch assembly selectively couples over the clutch surface 36 with the adjacent module 44 , The coupling arrangement 40 can then, for example, in or on the outside knob 22 to be appropriate. Basically, the modules can 40 . 44 and 46 the knob shaft 32 right in the door 12 be arranged. You can also choose, similar to the representation in the 1 , from a lock cylinder housing 30 be surrounded.

Similarly, another, inside knob shaft 34 formed of two modules. A module 48 coupled with the inner knob 28 and may, for example, have a standard length. Furthermore, an extension module serves 42 to adapt to a thickness of the door 12 , Of course, too, as in the 1 explains, the inside knob shaft 34 with an electromechanical clutch of order 40 Be provided, even if on an inside 20 a permission should be requested.

An embodiment of the coupling arrangement 40 will be related to the following 3 to 5 explained.

The 3 shows an embodiment of the clutch assembly 40 , In the view in the 3 is the clutch assembly 40 in a dome position 116 shown.

The coupling arrangement 40 has an electrical connection 50 on, for example, with the receiving device 24 and / or an input device 26 can be connected. Furthermore, the clutch assembly 40 a first electrics 52 and a second electrical system 56 on. The first electrical system 52 and the second electrics 56 serve to a drive device 60 the clutch assembly 40 to regulate and / or check incoming authorization signals and, if the authorization has been established, the drive device 60 to actuate. Between the first electrics 52 and the second electrics 56 is a drill protection 54 arranged. The drill guard may be cone-shaped, with a tip of the cone pointing in the negative X direction or away from the drive device 60 , All these elements are in one case 58 of which a lower half in the 3 is shown.

The drive device 60 is rotatable and fixed in the X direction with the housing 58 connected. This is a clip 62 provided. This can be done, for example, by screws, one screw of which 64 is shown with the housing 58 get connected. For example, by means of other screws or positioning pins 66 . 66 ' a plurality of housing parts can be interconnected or aligned with each other, as will be explained below.

The coupling arrangement 40 has a gearbox 68 on. The gear 68 sets an input speed of the drive device 60 to an output speed of a switching element (in the 3 not visible). For this purpose, for example, a pinion 70 rotatably with an output shaft of the drive device 60 coupled. The pinion 70 combs with a wheel 72 , which in turn is rotatably connected to the switching element. The switching element is rotatable about a switching axis 82 ,

The housing 58 has substantially the shape of a hollow cylinder and extends along a longitudinal axis 80 , The longitudinal axis 80 runs parallel to the switching axis 82 , The X direction is thus the "axial direction". A corresponding radial direction is thus in the YZ plane. For coupling with a component are two pin elements 74 . 76 provided. In the in the 3 shown dome position 116 protrude sections 84 respectively. 86 the pin elements 74 . 76 from a frontal area 78 of the housing 58 out. In particular, the pin elements 74 . 76 diametrically to the longitudinal axis 80 arranged. That way you can talk about the excellent sections 84 . 86 a non-rotatable and positive coupling are produced with a component, so that the clutch assembly 40 and the component can be rotated together.

Each of the pin elements 74 . 76 is in a corresponding pen holder 87 . 88 parallel to the switching axis 82 or the longitudinal axis 80 movable. The arrangement for displacing the pin elements 74 . 76 will be looking at the following 4 and 5 described.

The 4 shows the operation of the clutch assembly 40 based on an exempted representation of a switching element 90 and a coupling device 120 , The wheel 72 is non-rotatable with the switching element 90 coupled. The switching element 90 is as a wave 92 educated. The wave 92 has a longitudinal groove 94 on. Furthermore, a coil spring 96 provided that rotatably with the shaft 92 connected is. For this purpose, the coil spring has a first end 98 and a second end 100 on. The first end 98 and the second end 100 are in the longitudinal groove 94 hooked. In this way, the coil spring is rotatable with the shaft 92 connected.

The dome device 120 indicates the pin element 76 on. Furthermore, the coupling device 120 Of course, that too in the 4 not shown further pin element 74 on. Furthermore, the coupling device 120 a carrier element 102 on. The carrier element 102 surrounds the coil spring 96 and the wave 92 radially outside at least partially. In its basic body, the carrier element resembles 102 a broken sleeve. Consequently, the carrier element 102 an outer peripheral surface 126 and an inner peripheral surface 124 on. On the inner peripheral surface 124 is a female thread section 104 intended. The internal thread section 104 may be formed as a single nose or projection, but it can also be over a larger angular range than female thread portion on the inner peripheral surface 124 extend. The internal thread section 104 grips with the coil spring 96 into each other or combs with this.

On the outer peripheral surface is for each pin member a radially outwardly facing projection 106 respectively. 106 ' intended. This engages with a in the pin element 76 provided recess 128 each other. The carrier element 102 is in the axial direction X relative to the switching element 90 movable. Due to the coupling of the projection 106 into the recess 128 becomes the pin element during this movement 76 taken in the axial direction. The pin element 76 and also the pin element 74 are thus together with the carrier element 102 displaceable in the axial direction.

A peripheral area pointing in the positive Y direction 108 the carrier element 102 is left out. In principle, the carrier element can be the shaft 92 and the coil spring 96 completely surrounded. But it can also be the area 108 be omitted. In this can then be a section of the drive device 60 be arranged and saved in this way space in the Y direction.

Furthermore, on the shaft 92 a ring 110 arranged perpendicular to a longitudinal axis of the shaft 92 extends. As related to the 5a will be explained, this serves as a stop element.

From the 4 is already the movement implementation of a rotary motion 122 of the wheel 72 or the switching element 90 in a movement in the axial direction X of the pin member 76 clear. Turns the wheel 72 by means of the drive device 60 becomes the wave 92 turned. Due to the non-rotatable coupling and the coil spring rotates 96 , It is first assumed that the pin element 76 is not blocked and can move freely, the support member moves 102 depending on the direction of rotation of the shaft 92 in the thread of the coil spring 96 , In this way, the carrier element 102 in the direction of the switching axis 82 or offset in the axial direction X. Would, for example, in the presentation of the 4 looking in positive X-direction the wave 92 clockwise as indicated by the arrow 122 Turned clear, the support element would first 102 run in negative X direction. The movement would be carried out until the radial projection 106 at the pin holder 88 strikes. Then the support element can 102 do not move on. Will the rotation of the shaft 92 continued, the coil spring is running 96 in the positive X direction until it stops at the wheel 72 comes to the plant. The wheel 72 then stops as a stop the axial movement of the coil spring 96 ,

Now it is assumed that in the in the 4 Dome position shown the pin element 76 would be jammed in an adjacent component, the movement would be as follows. The wave 92 would be rotated clockwise when looking in the positive X direction, as indicated by the arrow 122 is clarified. Due to the jamming of the pin element 76 could be the carrier element 102 do not move in the axial direction in the negative X direction. It would thus immediately the coil spring 96 on the wave 92 start running until they finish with their 100 at the wheel 72 strikes. Then the rotation would be 122 but still continued and the wave 92 turned further. Because the coil spring 96 with her end 100 already in the wheel 72 is compressed by the continued rotation in the positive X direction. When the rotation now ends, lies the coil spring 96 in a compressed state. There is now a power stored in it. Will the pin element 76 now suddenly free, the coil spring relaxes 96 and pushes the pin element 76 in the negative X direction until the radial projection 106 at the pin holder 88 strikes. The relative position of the female thread section 104 to the coil spring 96 is now the same as the movement without blocking.

The wave 92 can be rotated in the following basically any. The coil spring 96 then runs out of the female thread section 104 and jumps with further rotation of the shaft 92 above. The coil spring 96 can, even with freely movable pin elements 74 . 76 , in their axial end positions always slightly against the end stops, ie the ring 110 or the wheel 72 to be compressed. The coil spring 96 takes place when the direction of rotation of the drive device 60 the female thread section 104 automatically again. The function of the coupling device 120 is thus ensured. It is advantageous that the drive device 60 For example, can be controlled over a fixed time window, especially with a safety reserve, and that even after loss of position again and again the end positions, such as the dome position 116 or the uncoupling position 118 , be achieved.

When moving from a uncoupling position to the coupling position of 4 the above applies with a correspondingly opposite direction of rotation, wherein the carrier element 102 performs opposite axial movements and is located at the opposite Wellendende in the starting position. The coil spring 96 is accordingly not in the in 4 shown position, but between the female threaded portion 104 and the wheel 72 ,

The 5a shows the clutch assembly 40 in an isometric plan view omitting the drive means 60 so that the view of the underlying components is released. Also in the 5a is the dome position 116 shown. In the 5b is the uncoupling position 118 shown. In a uncoupling position 118 are accordingly the pin elements with their outstanding sections 84 . 86 in the case 58 withdrawn and the support element 102 is shifted in the negative X direction, as in 5b is shown. The coil spring 96 then lies like in the 5b shown between the female thread portion 104 and the wheel 72 , Like in the 5a it can be seen forms the ring 110 a stop for supporting the coil spring 96 on a support element 112 out. On the corresponding opposite side, the coil spring 96 at the wheel 72 be supported. Another support element 114 For example, to support the carrier element 102 be provided in the positive X direction and as a stop.

As can be seen, the construction of the clutch assembly 40 very compact. In the in the 5a represented axial portion along the X-axis or the longitudinal axis 80 of the housing 58 All important components are arranged overlapping each other. These are the pin elements 74 . 76 , the pen holders 87 . 88 , the carrier element 102 , the wave 92 and the coil spring 96 , The drive device is also located in the positive Y direction over the shaft 92 , Thus, on a very short axial space the desired implementation of the direction of movement can take place as well as in both directions parallel to the X-direction or the switching axis 82 a force storage be provided if the pin elements 74 . 76 are locked.

The 6 shows an embodiment of a lock cylinder 10 , The elements of the coupling arrangement are up to the Bohrschutz 54 assembled shown. As you can see, the case is 58 longitudinally divided and has a first housing part 132 and a second housing part 134 on. This can be done, for example, by means of screws or positioning pins 66 . 66 ' connected or aligned with each other. In addition, however, the housing parts have a first section 136 on top of which a ring 140 can be pushed. Furthermore, there is a second section 138 provided, with respect to the ring 140 from the opposite direction another ring 142 can be deferred. The Rings 140 . 142 can serve to the housing parts 132 . 134 to connect with each other and / or to brace and as sliding bearings for the clutch assembly 40 in the lock cylinder housing 30 serve.

The lock cylinder housing 30 has a threaded hole 144 on it with a door 12 can be screwed. As a closing element 16 If a cam is provided, this has internal recesses 146 . 148 on. In the 6 These are six recesses, two of which each with respect to the longitudinal axis 80 diametrically opposed to each other and thus with the pin elements 74 and 76 correspond. In this way there are a total of three rotational positions in which the clutch assembly 40 with the closing element 16 can be coupled. This reduces the necessary angle to the clutch assembly 40 until a snap of the pin elements 74 . 76 in the closing element 16 must be twisted. In the present example, this is 60 °. In this way can then in the dome position 116 by turning the housing 58 , For example by means of the outer knob 22 of the closing element 16 turned and a lock 14 be actuated.

Claims (20)

Coupling arrangement ( 40 ) for a lock cylinder ( 10 ), with a housing ( 58 ), one in the housing ( 58 ) arranged switching element ( 90 ), one in the housing ( 58 ) arranged drive device ( 60 ) and with a coupling device ( 120 ) between a dome position ( 116 ) and a uncoupling position ( 118 ) is displaceable, characterized in that the switching element ( 90 ) by means of the drive device ( 60 ) about a switching axis ( 82 ) is rotatable, wherein the switching element ( 90 ) in relation to the switching axis ( 82 ) axial direction is determined, wherein the switching element ( 90 ) as a wave ( 92 ) is formed, and wherein the shaft ( 92 ) rotatably with one on the shaft ( 92 ) in relation to the switching axis ( 82 ) axially displaceable coil spring ( 96 ), the coupling device ( 120 ) a carrier element ( 102 ), which is rotationally fixed and parallel to the switching axis ( 82 ) is displaceably mounted, wherein the carrier element ( 102 ) with the coil spring ( 96 ) for implementing a rotational movement ( 122 ) of the switching element ( 90 ) in a respect to the switching axis ( 82 ) axial movement of the carrier element ( 102 ), and wherein the coupling device ( 120 ) further comprises at least two pin elements ( 74 . 76 ), each pin element ( 74 . 76 ) together with the carrier element ( 102 ) parallel to the switching axis ( 82 ) is movably coupled, wherein the carrier element ( 102 ) the switching element ( 90 ) and the coil spring ( 96 ) with respect to the switching axis ( 82 ) radially outwardly at least partially surrounds, wherein the carrier element ( 102 ) an inner peripheral surface ( 124 ), wherein the inner peripheral surface ( 124 ) an internally threaded portion ( 104 ), which with the coil spring ( 96 ), and wherein the coupling arrangement ( 40 ) two stops for limiting a travel of the coil spring ( 96 ) on the shaft ( 92 ) having. Coupling arrangement according to claim 1, characterized in that the housing ( 58 ) is formed as a cylindrical hollow shaft, wherein the housing ( 58 ) along a longitudinal axis ( 80 ), wherein the switching axis ( 82 ) the longitudinal axis ( 80 ) or one to the longitudinal axis ( 80 ) is parallel line, and wherein the housing ( 58 ) one perpendicular to the longitudinal axis ( 80 ) extending end face ( 78 ) having. Coupling arrangement according to claim 2, characterized in that the end face ( 78 ) a coupling surface ( 36 ) of the coupling arrangement ( 40 ), each pin element ( 74 . 76 ) of the coupling device ( 120 ) in the dome position ( 116 ) with respect to the longitudinal axis ( 80 ) eccentrically at least partially from the end face ( 78 ) and in the uncoupling position ( 118 ) in the housing ( 58 ) is withdrawn. Coupling arrangement according to one of claims 1 to 3, characterized in that the coupling device ( 120 ) rotatably and parallel to the switching axis ( 82 ) displaceable on the housing ( 58 ) is stored. Coupling arrangement according to one of claims 1 to 4, characterized in that the carrier element ( 102 ) the switching element ( 90 ) partially surrounds and in one of the support member ( 102 ) recessed peripheral area ( 108 ) a section of the drive device ( 60 ) is arranged. Coupling arrangement according to one of claims 1 to 4, characterized in that the carrier element ( 102 ) the switching element ( 90 ) completely surrounds. Coupling arrangement according to one of claims 1 to 6, characterized in that the carrier element ( 102 ) an outer peripheral surface ( 126 ), each pin element ( 74 . 76 ) a recess ( 128 ), which is provided with a on the outer peripheral surface ( 126 ) with respect to the switching axis ( 82 ) projecting radially outward (FIG. 106 ) interlock. Coupling arrangement according to one of claims 1 to 7, characterized in that the coupling arrangement ( 40 ) a gearbox ( 68 ) for translating an input speed of the drive device ( 60 ) to an output speed of the shaft ( 92 ) having. Coupling arrangement according to claim 8, characterized in that the drive device ( 60 ) rotatably with a pinion ( 70 ) of the transmission ( 68 ), wherein the pinion ( 70 ) with a rotation with the shaft ( 92 connected wheel ( 72 ) combs. Coupling arrangement according to claim 9, characterized in that the drive device ( 60 ) and the wave ( 92 ) at least partially in relation to the switching axis ( 82 ) are arranged side by side in the radial direction. Coupling arrangement according to one of claims 1 to 10, characterized in that the shaft ( 92 ), the carrier element ( 102 ) containing at least two pin elements ( 74 . 76 ) and the drive device ( 60 ) in the housing ( 58 ) are arranged so that in relation to the switching axis ( 82 ) axial direction at least partially overlap each other. Coupling arrangement according to one of claims 1 to 11, characterized in that the carrier element ( 102 ) is formed of plastic. Coupling arrangement according to one of claims 1 to 12, characterized in that the coupling device ( 120 ) exactly two pin elements ( 74 . 76 ) having. Coupling arrangement according to claim 13, characterized in that the housing ( 58 ) is formed as a cylindrical hollow shaft, wherein the housing ( 58 ) along a longitudinal axis ( 80 ), and wherein the two pin elements ( 74 . 76 ) with respect to the longitudinal axis ( 80 ) are arranged diametrically opposite to each other. Coupling arrangement according to one of claims 2 to 14, characterized in that the switching axis ( 82 ) and the longitudinal axis ( 80 ) are not identical. Coupling arrangement according to one of claims 1 to 15, characterized in that the housing ( 58 ) is divided into two parts in the longitudinal direction. Lock cylinder ( 10 ) with a coupling arrangement ( 40 ) according to one of claims 1 to 16, with a concentric with the housing ( 58 ) arranged component ( 16 . 42 . 44 . 46 . 48 ), the housing ( 58 ) and the component ( 16 . 42 . 44 . 46 . 48 ) in the dome position ( 116 ) are positively connected with each other in the direction of rotation, and in the uncoupling position ( 118 ) the housing ( 58 ) and the component ( 16 . 42 . 44 . 46 . 48 ) in the direction of rotation ( 122 ) are decoupled from each other. Lock cylinder according to claim 17, characterized in that the component ( 16 . 42 . 44 . 46 . 48 ) a lock bit ( 16 ) or a wave segment ( 42 . 44 . 46 . 48 ) of a segmented knob shaft ( 32 . 34 ). Lock cylinder according to claim 17 or 18, characterized in that the housing ( 58 ) a wave segment ( 40 . 42 . 44 . 46 . 48 ) of a segmented knob shaft ( 32 . 34 ) of the lock cylinder ( 10 ), a handle ( 22 . 28 ) of the lock cylinder ( 10 ) or a knob shaft ( 32 ) of the lock cylinder ( 10 ). Coupling arrangement ( 40 ) for a lock cylinder ( 10 ), with a housing ( 58 ), one in the housing ( 58 ) arranged switching element ( 90 ), one in the housing ( 58 ) arranged drive device ( 60 ) and with a coupling device ( 120 ) between a dome position ( 116 ) and a uncoupling position ( 118 ) is displaceable, characterized in that the switching element ( 90 ) by means of the drive device ( 60 ) about a switching axis ( 82 ) is rotatable, wherein the switching element ( 90 ) in relation to the switching axis ( 82 ) axial direction is determined, wherein the switching element ( 90 ) as a wave ( 92 ) is formed, and wherein the shaft ( 92 ) rotatably with one on the shaft ( 92 ) in relation to the switching axis ( 82 ) axially displaceable coil spring ( 96 ), the coupling device ( 120 ) a carrier element ( 102 ), which is rotationally fixed and parallel to the switching axis ( 82 ) is displaceably mounted, wherein the carrier element ( 102 ) with the coil spring ( 96 ) for implementing a rotational movement ( 122 ) of the switching element in a respect to the switching axis ( 82 ) axial movement of the carrier element meshes, and wherein the coupling device ( 120 ) further comprises at least two pin elements ( 74 . 76 ), each pin element ( 74 . 76 ) together with the carrier element ( 102 ) parallel to the switching axis ( 82 ) is movably coupled, and wherein the coupling arrangement ( 40 ) two stops for limiting a travel of the coil spring ( 96 ) on the shaft ( 92 ) having.

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