Operating device with a feedback unit

Abstract

The invention relates to an operating device (1) comprising - a first operating device section (2), - a user interface (3), - a feedback unit (14), wherein the feedback unit (14) is connected to the first operating device section (2) and the user interface (3) has a shaft (3.1) which is rotatably mounted in or on the first operating device section (2) via a shaft bearing (9), and the feedback unit (14) is connected to the shaft (3.1) in a torque-transmitting manner, and the feedback unit (14) is configured to apply haptically perceptible feedback in the form of a torque to the shaft (3.1) of the user interface (3), wherein the shaft bearing (9) is arranged along an axis (A) of the operating device (1) between the feedback unit (14) and a connecting section of the shaft (3.1) which is designed for connection with an operating element (3.2).

Description

[0001] The present invention relates to an operating device with a feedback unit. State of the art

[0002] Nowadays, steering column arrangements for vehicles are known that incorporate a feedback unit designed to generate haptic feedback at a user or driver interface. This feedback is perceptible to the driver at a steering element connected to the driver interface. To generate this feedback, the feedback unit includes an electric drive device, such as a rotary electric motor, which acts both to brake and drive a steering shaft at the driver interface.

[0003] Such steering column arrangements are used particularly in steer-by-wire systems to generate haptic feedback to the driver via the electric drive unit, in the absence of a direct mechanical connection from the driver interface to the steered wheels. This feedback would otherwise be felt with a mechanical connection. For example, this could be a restoring torque of the steered wheels against which the driver must make a steering movement.

[0004] The driver can also introduce forces into the steering column assembly that act on the feedback unit or must be absorbed by it. These forces can be caused by excessive pulling or pushing on the steering element by the driver, or by the driver impacting the steering element, and can excessively stress or damage the feedback unit.

[0005] The situation described above applies not only to steering applications, such as the steering column arrangements described here, but also to operating devices in general. In particular, forces applied to the operating device by a user via an operating element can damage it.

[0006] Against this background, it is an object of the present invention to provide an operating device with a feedback unit by which at least one of these problems is solved. Disclosure of the invention

[0007] These and other problems, which will be mentioned in the following description or which can be recognized by a person skilled in the art, are solved by the subject matter of the independent claim. Advantageous embodiments and further developments can be found in the dependent claims, the following description, and the drawings.

[0008] The operating device according to the invention comprises a first operating device section, a user interface, and a feedback unit. The feedback unit is connected to the first operating device section. The user interface has a shaft that is rotatably mounted in or on the first operating device section via a shaft bearing. The feedback unit is connected to the shaft in a torque-transmitting manner. The shaft bearing is arranged along an axis of the operating device between the feedback unit and a connecting section of the shaft, which is designed for connection to an operating element. The feedback unit is configured to apply haptically perceptible feedback in the form of torque to the shaft of the user interface.

[0009] By positioning the shaft bearing between the feedback unit and the connecting section of the shaft, through which axial and / or lateral forces can be applied to the operating device by a driver via a control element, these forces can be absorbed by the shaft bearing before they are transmitted to the feedback unit. In other words, the shaft bearing arrangement enables axial and / or lateral force-free operation of the feedback unit.

[0010] The first operating device section can be designed to be displaceable along the axis of the operating device. This allows the position of the user interface, particularly of an operating element connected to the shaft, to be adjusted. When the first operating device section is displaceable, the feedback unit moves with it. This eliminates the need for connection mechanisms between the feedback unit and the shaft that would have to adjust as a result of the displacement to maintain the torque-transmitting connection during and after the movement.

[0011] The shaft, especially the connecting section of the shaft, can be connected to the control element, such as a steering wheel, a steering lever or a joystick, which ultimately provides haptic feedback to the operator, especially the driver.

[0012] The operating device can be designed, in particular, as a steering column assembly, while the first operating device section is designed as a steering column section. The user interface can be designed as a driver interface. The feedback unit is designed to apply haptically perceptible feedback in the form of torque to the shaft, or in this case, the steering shaft, of the driver interface.

[0013] The control device can be configured for a steer-by-wire system. This means that the control device does not include a mechanical connection to steered wheels or any provision for such a connection. Instead, the control device serves to detect steering input from the driver via the user interface. This steering input can be a steering angle and / or a steering torque.

[0014] According to one embodiment, the feedback unit includes an electric drive device. This electric drive device can be designed, in particular, as a rotary drive motor capable of generating both a driving and a braking torque. The generated torque can be transmitted directly to the shaft. Alternatively, the generated torque can be transmitted to the shaft via intermediate elements such as couplings, connecting elements, and / or a gearbox. By electrically controlling the drive device, a corresponding driving or braking torque, and thus corresponding haptic feedback, can be generated, which can then be applied to the user interface.

[0015] Alternatively or additionally, the feedback unit features an electrically controlled brake. This brake can be designed as a rotary brake, generating a braking torque. This braking torque can be transmitted directly to the shaft. Alternatively, it can be transmitted to the shaft via intermediate elements such as couplings, connecting elements, and / or a gearbox. By electrically controlling the brake, a corresponding braking torque, and thus corresponding haptic feedback, can be generated and actuated via the user interface.

[0016] By arranging the shaft bearings, it is possible to prevent the electric drive device or the brake, in particular its respective rotor, if it is designed as a rotary drive machine or brake, from being subjected to an axial and / or transverse force that is introduced into the operating device via the user interface.

[0017] The electric drive and the brake can be arranged coaxially, so that, for example, their rotors are arranged coaxially. This allows for a compact design of the operating device, or at least a radially compact design of the operating device with respect to the axis of the electric drive and brake.

[0018] The brake can be designed as a friction brake. In response to an electrical control signal, the friction brake can then generate a friction-based braking effect to produce haptic feedback.

[0019] In particular, the brake can have at least one friction pair comprising at least two friction surfaces, which are in contact with each other to generate the braking effect. Specifically, a contact force acting on the at least one friction pair can be generated electromechanically or electromagnetically and optionally controlled or regulated. Alternatively or additionally, the brake can be designed as a magnetorheological brake.Magnetorheological brakes generate a braking effect by creating a magnetic field that penetrates a gap between a rotor and a stator of the brake, in which a magnetorheological medium, such as a powder or a liquid, is provided. This changes the frictional properties in the magnetorheological medium by forming chains of magnetorheological particles under the influence of the magnetic field. When these chains shear, a friction point is formed within the magnetorheological medium, which has friction surfaces sliding against each other, i.e., a friction pairing.

[0020] Alternatively or additionally, the operating device includes a gearbox located between the user interface and the feedback unit, in particular between the user interface and the electric drive unit and / or the brake. The gearbox can be designed such that a drive or braking effect, such as a drive or braking torque generated by the electric drive unit, is translated and thus amplified by the gearbox before being transmitted to the user interface as haptic feedback. Alternatively or additionally, the gearbox can be designed such that a braking effect, such as a braking torque generated by the brake, is translated and thus amplified by the gearbox before being transmitted to the user interface as haptic feedback. In this way, the electric drive unit and / or the brake can be dimensioned accordingly smaller.In particular, this also makes it possible to achieve lower electrical power consumption in a static input or steering state at the control element, compared to a control device without a gearbox.

[0021] The gearbox can have an input shaft and a coaxially arranged output shaft. This allows for a compact gearbox and, consequently, a compact first operating device section. The gearbox can be designed as a planetary gearbox to achieve correspondingly high gear ratios in the smallest possible installation space. In particular, the electric drive and the brake can be designed with rotary action, with the rotors or axes of rotation of the rotors of the electric drive and the brake being arranged coaxially to the input and output shafts of the gearbox, respectively, and preferably being connected to the input shaft for torque transmission. The output shaft can then be arranged coaxially to the input shaft and preferably also be connected to the input shaft for torque transmission.In this way, a radially compact arrangement of gearbox, electric drive device and brake and, if applicable, shaft in relation to the axis is possible.

[0022] According to one embodiment, the operating device has a second operating device section. The first operating device section can be designed to be displaceable relative to the second operating device section. The second operating device section can, in particular, be designed to guide the first operating device section parallel to its axis during displacement. The displacement can be configured such that the first operating device section is either guided within the second operating device section and, when the first operating device section is displaced, is inserted into the second operating device section to shorten the operating device. For this purpose, the second operating device section can be designed to be correspondingly hollow and extend parallel to the axis along which the first operating device section is displaceable.Alternatively, the first operating device section can encompass the second operating device section, so that when the first operating device section is moved to shorten the operating device, it is slid over the second operating device section. The first operating device section can be designed to be hollow and extend parallel to the axis. The second operating device section can be designed for mounting in a vehicle, particularly on its body. The movement of the first operating device section relative to the second operating device section makes the operating device telescopic.

[0023] According to one embodiment, the shaft bearing comprises a first bearing and a second bearing. Both bearings are arranged along the axis between the feedback unit and the connecting section of the shaft, which is designed for connection to a control element, corresponding to the position of the shaft bearing. Both bearings can be designed as rolling bearings, so that the shaft bearing generates the lowest possible resistance when the shaft rotates. In particular, rolling bearings do not exhibit "breakaway effects," i.e., no transition from static to kinetic friction, when the shaft is set into rotation from a rest position via the control element connected to the shaft. Such breakaway effects can distort the haptic feedback to the user and thus irritate them.To achieve the best possible support for lateral forces acting on the shaft, the first and second bearings of the shaft support can be spaced as far apart as possible along the axis. The first bearing can be located along the shaft axis in the first third of its length, i.e., near the connecting section of the shaft or near the control element, while the second bearing is located along the shaft axis in the last third of its length, i.e., closer to the feedback unit. In particular, the distance between the two bearings can be at least 50% of the shaft length, i.e., its extent along the axis. Preferably, the distance between the two bearings is at least 75% of the shaft length.In this way, corresponding reaction forces can be generated in the two bearings as a result of the transverse forces applied via the control element, which act in particular as a force couple and on the one hand counteract the applied transverse forces and on the other hand also counteract a moment that arises because the point of application of the applied transverse forces lies outside the shaft bearing, namely at the connecting section of the shaft.

[0024] The shaft bearing, in particular the first and second bearings, can be designed as an angled bearing. This allows for optimal absorption of axial forces, such as those applied to the control device or the shaft via the control element. Specifically, the angled bearing can be preloaded along the axis to eliminate play in the shaft bearing. This enables direct support of axial forces, and no play that would distort haptic feedback is perceptible at the control element.

[0025] According to one embodiment, the shaft is connected to the feedback unit via a connecting element. The haptic feedback can then be transmitted as torque from the feedback unit to the shaft. Such a connecting element allows for a detachable connection, thus enabling easy assembly and disassembly of the operating device.

[0026] According to one embodiment, the connecting element is designed for longitudinally and transversely force-free torque transmission between the shaft and the feedback unit. Such a connecting element is designed exclusively for torque transmission between the shaft and the feedback unit. Transverse and / or longitudinal forces, which, for example, are introduced into the shaft by a user via the operating element, cannot be transmitted to the feedback unit and, in particular, not to the electric drive device and / or the brake, thus preventing damage to the electric drive device and / or the brake. Such a connecting element could, for example, be a jaw coupling that only transmits torque.In particular, such a connecting element can be designed in such a way that a limited lateral displacement of the shaft transverse to the axis of rotation of the electric drive device and brake and / or a limited tilting of the shaft is possible without the torque-transmitting connection being released.

[0027] A connecting element such as a jaw coupling, which ultimately connects the feedback unit and the shaft only through surfaces contacted in the direction of rotation around the axis, allows for easy assembly or disassembly of the operating device, since both parts of the connecting element, in particular the jaw coupling, can be designed so that they only need to be axially inserted into or separated from each other.

[0028] According to one embodiment, the operating device includes a rotation angle limiter configured to limit rotation angle input via the user interface. In other words, the rotation angle limiter is designed to limit the rotation angle of the shaft. For example, it can be configured as a stop in the first operating device section, which becomes effective when a maximum permissible rotation angle of the shaft is reached. This prevents the feedback unit from supporting a torque applied by the user via the operating element. Instead, the torque is transmitted directly to the first operating device section via the rotation angle limiter.If a second control device section is present, the torque can be transferred to the second control device section via a bearing between the first and second sections, thus enabling support against the vehicle body. In this way, the torque required as feedback upon reaching the maximum rotation angle is now generated by the rotation angle limiter, for example, by the activation of a mechanical stop. The feedback unit, and in particular the electric drive unit and / or the brake, does not need to be activated to generate this comparatively high feedback or torque, thus reducing wear and tear on the feedback unit.

[0029] According to one embodiment, the operating device has a sensor arranged along the axis on the side of the shaft bearing facing away from the connecting section of the shaft designed for connection to an operating element. This allows the sensor to be positioned with minimal transverse forces, as any transverse forces introduced into the shaft by the user via the operating element are absorbed by the shaft bearing before being transmitted to the sensor. The sensor can be a steering angle sensor.In particular, it may be provided that the sensor is located within the feedback unit and is coupled there to a shaft, for example a shaft of the gearbox described above, or a rotor of the electric drive unit or the brake, whereby a quantity such as a rotary motion can be detected, so that, via known transmission ratios between the feedback unit and the shaft, for example a steering angle can be determined.

[0030] According to one embodiment, the operating device is designed to completely conceal the first operating device section. This means that the first operating device section, preferably together with the user interface and an attached control element, can be completely concealed. This can be achieved, for example, by appropriately concealing the first operating device section within the second operating device section. Alternatively or additionally, the second operating device section can also be designed to be completely concealed within a designated housing. In each of these cases, it can be provided that the first operating device section and, if applicable, the second operating device section can be completely concealed within the housing.The second control device section can be moved parallel to the axis in such a way that the control device is shortened to such an extent that either the first control device section is completely retracted into the second control device section, or the control device is completely retracted into the designated housing. In this way, the first control device section with the user interface, or even the entire control device, can be stowed away, freeing up sufficient space in the vehicle interior to operate the vehicle, for example, in autonomous driving mode, i.e., without user or driver intervention via the user interface. The compact design of the control device described above is advantageous in this respect. In particular, cables of the control device, which, for example,Electrical power to the feedback unit must be designed to be deformable in order to allow the necessary travel distance for stowing the first and, if applicable, second operating device section, since the travel distance in this case is large compared to a mere displacement to adjust the position of the user interface. Detailed description based on the drawings

[0031] Further measures improving the invention are described in more detail below, together with a description of a preferred embodiment of the invention, with reference to the figures. The figures show: Fig. 1 a perspective view of an operating device according to an embodiment of the invention, Fig. 2 a sectional view of the operating device Fig. 1, and Fig. 3 a sectional view of a further development of the operating device Fig. 1 and Fig. 2.

[0032] The figures are purely schematic and serve only to illustrate the invention. The same elements are identified by the same reference symbols.

[0033] Fig. Figure 1 shows a schematic and exemplary perspective view of an operating device according to an embodiment of the invention and Fig. 2 shows a sectional view of the operating device. Fig. 1. Therefore, this embodiment is explained below with reference to both drawings. The operating device is designed here as a steering column assembly.

[0034] Shown is an axially adjustable operating device 1, comprising a first operating device section 2 displaceable parallel to an axis A of the operating device 1, a user interface 3, and a feedback unit 14 with an electric drive device 4, which is connected to the user interface 3 via a gearbox 6 of the feedback unit 14. The feedback unit 14, in particular the electric drive device 4, is configured to generate haptic feedback at the user interface 3. The electric drive device 4 and the gearbox 6 are connected to the first operating device section 2, more precisely, arranged within the tubular first operating device section 2, such that when the first operating device section 2 is displaced parallel to the axis A, the electric drive device 4 and the gearbox 6 are displaced with it.

[0035] The operating device 1 has a cable 8 which is designed to supply electrical power to the electrical drive device 4. The cable 8 is spirally shaped and deformable in such a way that its length can adapt to the displacement of the first operating device section 2 parallel to the axis A.

[0036] The first operating device section 2 is tubular in shape and arranged within a second operating device section 7, and supported in the second operating device section 7 by a bearing 12. The bearing 12 has two bearings 12.1 and 12.2, which allow the first operating device section 2 to be displaced.

[0037] The first operating device section 2 extends substantially along axis A. The second operating device section 7 has a cavity extending along axis A in which the bearing 12 is provided, with the first operating device section 2 extending into this cavity of the second operating device section 7. When the first operating device section 2 is displaced parallel to axis A, it moves relative to the second operating device section 7, with the bearing 12 of the second operating device section 7 guiding the first operating device section 2 during the displacement.

[0038] The operating device 1 shown is telescopically designed. This means that the first operating device section 2 can be at least partially inserted into the second operating device section 7.

[0039] The user interface 3 of the operating device 1 shown has a shaft 3.1 which is arranged coaxially to the axis A and extends partially along the axis A into the first operating device section 2. Within the first operating device section 2, the shaft 3.1 is rotatably mounted about the axis A by a shaft bearing 9. The shaft bearing 9 has a first bearing 9.1 and a second bearing 9.2.

[0040] The user interface 3 has a control element 3.2. The free end of the shaft 3.1, which is not located within the first control device section 2, is rotationally and axially fixed to the control element 3.2, so that torque transmission between the control element 3.2 and the shaft 3.1 about the axis A is possible. The control element 3.2 can be, for example, a steering wheel or a steering lever. The control element 3.2 is in Fig. 2 is indicated as a rectangle in the side view.

[0041] The shaft 3.1 is arranged coaxially with respect to axis A, where axis A, in this embodiment, represents the axis of rotation of the shaft 3.1. The electric drive device 4 is designed here as a rotary device arranged coaxially with axis A. The gearbox 6 is arranged between the shaft 3.1 and the drive device 4 and is connected to the electric drive device 4 in a torque-transmitting manner. In this way, a drive or braking torque can be introduced into the gearbox 6 by the electric drive device 4.

[0042] A connecting element 11 is arranged between the gearbox 6 and the shaft 3.1, establishing a connection for torque transmission between the gearbox 6 and the shaft 3.1. The connecting element 11 is designed for the axial force- and transverse force-free transmission of torque between the gearbox 6 and the shaft 3.1 and, in the illustrated embodiment, is designed as a jaw coupling. Forces applied by a user or driver at the control element 3.2, such as an axial force F, are not affected by the coupling. a , a horizontal force F h as well as a vertical force F v With respect to axis A, in the embodiment shown, the forces are supported by the shaft bearing 9, whose bearings 9.1 and 9.2 are arranged axially in front of the connecting element 11, and are also not transmitted via the connecting element 11 to the gearbox 6 or the electrical drive device 4 located behind it.

[0043] The electric drive device 4, as part of the feedback unit 14, can generate haptic feedback for the user or driver, which they can access via the control element 3.2. To generate this feedback, the electric drive device 4 is designed to produce a torque. The electric drive device 4 can generate either a drive or a braking torque. In the illustrated embodiment, the torque generated by the electric drive device 4 is applied to the gearbox 6, translated by the gearbox 6, and then applied to the shaft 3.1, and thus to the user interface 3.

[0044] The gearbox 6 is designed as a coaxial gearbox, meaning that the input and output shafts of the gearbox 6 are arranged coaxially with each other. Furthermore, the input and output shafts of the gearbox 6 are arranged coaxially with axis A. Thus, the shaft 3.1, the gearbox 6, and the electric drive device 4 are all arranged coaxially with each other. This results in a radially compact design of the operating device 1 with respect to axis A.

[0045] The gearbox 6 is designed here as a planetary gearbox, which enables a high gear ratio of the torque generated by the electric drive device 4 with a compact design of the gearbox 6.

[0046] The gearbox 6 allows the torque of the electric drive device 4 to be multiplied before transmission to the shaft 3.1, thus enabling a smaller electric drive device 4 compared to an embodiment without a gearbox. This allows, in particular, a smaller cross-section for the cable 8 compared to an embodiment without a gearbox, since the feedback unit 14 has a lower power requirement. In this way, improved deformability and thus better displacement of the first operating device section 2 can be achieved.

[0047] The illustrated embodiment further features an optional rotation angle limiter 10. This limiter restricts the rotation angle of the shaft 3.1. For example, it can be designed as a stop in the first control device section 2, which becomes effective when the maximum permissible steering angle of the shaft 3.1 is reached. This prevents the feedback unit 14 from supporting a torque applied by the user or driver via the control element 3.2. Instead, the rotation angle limiter 10 transmits the torque directly to the first control device section 2. From there, the torque can be further transmitted via the bearing 12 to the second control device section 7, thus providing support against the vehicle body. In this way, the torque that is to be provided as feedback upon reaching the maximum rotation angle is now generated by the rotation angle limiter 10, for example, by the activation of a mechanical stop.The feedback unit 14, and in particular the electric drive device 4, does not need to be activated to generate this comparatively high feedback or this comparatively high torque, which protects the feedback unit 14.

[0048] Finally, the control device 1 shown includes an optional sensor 13. This sensor is also arranged in the first control device section 2 and is designed to detect the rotation angle of the shaft 3.1 as an input variable, for example, as a driver request in a steer-by-wire application of the control device 1 when rotating about the axis A. For this purpose, the sensor 13 is coupled to the shaft of the electric drive device 4 so that it can detect a rotational movement of the rotor of the drive device 4 and therefore allows the steering angle of the shaft 3.1 to be determined with a known gear ratio between shaft 3.1 and drive device 4.

[0049] The first bearing 9.1 and the second bearing 9.2 of the shaft bearing 9 are arranged here within the first operating device section 2 in such a way that they provide good support for the forces F a , F h , F v To enable this, both bearings 9.1 and 9.2 are arranged as far apart as possible along axis A. As can be seen, the first bearing 9.1 is located on the first third of shaft 3.1, while the second bearing 9.2 is located on the last third of shaft 3.1. The first third comprises the area shown in the drawing. Fig. 2. The upper end of shaft 3.1, which is connected to the control element 3.2, while the last third of shaft 3.1 comprises the end of shaft 3.1 opposite the axis A. In the embodiment shown, the distance between the two bearings 9.1, 9.2 is at least 50% of the length of shaft 3.1, i.e., 50% of the axial extent of the shaft. In this way, the forces Fh , F v The wave bearing 9 is absorbed, while the large distance between bearings 9.1 and 9.2 also creates a reaction force couple in bearings 9.1 and 9.2, which counteracts a possible bending moment resulting from the forces F h , F v occurs in wave 3.1.

[0050] Bearings 9.1 and 9.2 can be designed as rolling bearings to reduce friction. In particular, bearings 9.1 and 9.2 can be designed as pre-tensioned bearings, which are axially preloaded. This reduces or eliminates axial play, which would otherwise be noticeable at the control element 3.2 and could cause irritation for the user or driver. The pre-tensioned bearing also reduces the axial force F. a , which can be brought in by the driver, are supported.

[0051] Fig. Figure 3 shows a sectional view of a further development of the operating device. Fig. 1 and Fig. 2.

[0052] The operating device 1 shown essentially corresponds to the operating device 1 from the Fig. 1 and Fig. 2. In contrast, the feedback unit 14 here has, in addition to the electric drive device 4, an electrically adjustable brake 5. The brake 5 can, in particular, be designed as a friction brake, as described above.

[0053] The brake 5 also acts on the gearbox 6, which can also imprint haptic feedback via the connecting element 11 onto the shaft 3.1 and thus also onto the control element 3.2.

[0054] In the Fig. 2 and Fig. The control element 3.2, the drive device 4, if applicable the brake 5, the gearbox 6, the rotary angle limiter 10 and the sensor 13 are shown only with their rough outlines. Reference symbol list 1 Operating device 2 first operating device section 3 User interface 3.1 Wave 3.2 Control element 4 Drive device 5 Brake 6 gearboxes 7 second operating device section 8 cables 9 shaft bearing 9.1 Storage 9.2 Storage 10 Rotation angle limiters 11 Connecting element 12 Storage 12.1 Storage 12.2 Storage 13 Sensor 14 Feedback Unit Axis

Claims

Operating device (1), comprising: - a first operating device section (2), - a user interface (3), - a feedback unit (14), wherein the feedback unit (14) is connected to the first operating device section (2) and the user interface (3) has a shaft (3.1) which is rotatably mounted in or on the first operating device section (2) via a shaft bearing (9), and the feedback unit (14) is connected to the shaft (3.1) in a torque-transmitting manner, and the feedback unit (14) is configured to apply haptically perceptible feedback in the form of a torque to the shaft (3.1) of the user interface (3), wherein the shaft bearing (9) is arranged along an axis (A) of the operating device (1) between the feedback unit (14) and a connecting section of the shaft (3.1) which is configured for connection with an operating element (3.2). Operating device (1) according to claim 1, wherein the feedback unit (14) comprises an electric drive device (4) and / or an electrically controlled brake (5) and / or a gearbox (6). Operating device (1) according to one of the preceding claims, comprising a second operating device section (7). Operating device (1) according to one of the preceding claims, wherein the shaft bearing (9) has a first bearing (9.1) and a second bearing (9.2). Operating device (1) according to one of the preceding claims, wherein the shaft bearing (9) is positioned in the direction of the axis (A). Operating device (1) according to one of the preceding claims, wherein the connection of the shaft (3.1) to the feedback unit (14) is made via a connecting element (11). Operating device (1) according to claim 6, wherein the connecting element (11) is designed for longitudinal and / or transverse force-free torque transmission between shaft (3.1) and feedback unit (14). Operating device (1) according to one of the preceding claims, wherein a rotation angle limiter (10) is provided which is designed to limit a rotation angle input via the user interface (3). Operating device (1) according to one of the preceding claims, wherein the operating device (1) has a sensor (13) arranged along the axis on a side of the shaft bearing (9) facing away from the connecting section of the shaft (3.1) designed for connection with an operating element (3.2). Operating device (1) according to one of the preceding claims, wherein the operating device (1) is designed to completely stow the first operating device section (2).

Images