EP4052111A1 - Système de freinage magnétorhéologique, en particulier dispositif de commande - Google Patents

Système de freinage magnétorhéologique, en particulier dispositif de commande

Info

Publication number
EP4052111A1
EP4052111A1 EP20811526.1A EP20811526A EP4052111A1 EP 4052111 A1 EP4052111 A1 EP 4052111A1 EP 20811526 A EP20811526 A EP 20811526A EP 4052111 A1 EP4052111 A1 EP 4052111A1
Authority
EP
European Patent Office
Prior art keywords
unit
magnetic field
braking device
field sensor
rotating body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20811526.1A
Other languages
German (de)
English (en)
Inventor
Stefan Battlogg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Inventus Engineering GmbH
Original Assignee
Inventus Engineering GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102019129548.3A external-priority patent/DE102019129548A1/de
Priority claimed from DE102019135030.1A external-priority patent/DE102019135030B4/de
Application filed by Inventus Engineering GmbH filed Critical Inventus Engineering GmbH
Publication of EP4052111A1 publication Critical patent/EP4052111A1/fr
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/08—Controlling members for hand actuation by rotary movement, e.g. hand wheels
    • G05G1/10—Details, e.g. of discs, knobs, wheels or handles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
    • F16D57/002—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders comprising a medium with electrically or magnetically controlled internal friction, e.g. electrorheological fluid, magnetic powder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
    • F16F9/535—Magnetorheological [MR] fluid dampers
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
    • G05G5/03—Means for enhancing the operator's awareness of arrival of the controlling member at a command or datum position; Providing feel, e.g. means for creating a counterforce
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
    • F16D2066/003—Position, angle or speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/18—Electric or magnetic
    • F16D2121/20—Electric or magnetic using electromagnets

Definitions

  • Magnetorheological braking device in particular
  • the present invention relates to a magnetorheological braking device for varying a torque of rotary movements and in particular to a magnetorheological operating device for setting operating states at least by means of rotary movements.
  • the braking device has at least one axle unit and at least one rotating body that can be rotated relative to the axle unit. A torque for the rotatability of the rotating body can be set in a targeted manner by means of at least one magnetorheological braking device.
  • Such braking devices allow a particularly targeted deceleration up to a blocking of rotary movements.
  • the braking devices are designed as operating devices.
  • Such control devices are increasingly found in a wide variety of devices and z. B. in motor vehicles (e.g. control element in the center console, in the steering wheel, on the seat ...), medical technology (e.g. for setting medical devices) or in smart devices (e.g. smartphone, smartwatch, computer peripherals, computer mouse, game controller, joystick) , OFF-Highway vehicles (e.g. operating elements in agricultural machinery), boats / ships, airplanes Use, for example, to select menus or to be able to carry out precise controls.
  • the magnetorheological braking device for. B. different moments, stops and grids can be set for the rotary movement. In this way, a special haptic can be achieved when setting operating states (haptic feedback), which the user supports and allows very specific settings, thus reducing the complexity of operation.
  • the sensor device e.g. the distance between the magnetic ring and the sensor
  • the sensor device must usually be arranged within a very narrow tolerance band to the components to be monitored. For example, deviations in the spacing of such components lead to a deterioration in the measurement signal and to disturbing noise. This is particularly disadvantageous for fine grids, reversing the direction of rotation with a stop or locking in one direction of rotation (clockwise or counterclockwise) and for precise setting options (e.g. sensor with 90,112 increments).
  • a braking device designed as a thumb roller often only 12 mm in diameter ready, such as a wheel (roller) rotatable with a finger (e.g. thumb) in a steering wheel or a steering wheel spoke of e.g. a motor vehicle.
  • the installation space for the sensor device is therefore very limited. Overall, this results in a need for optimization in terms of assembly, costs and installation space.
  • the object of the present invention to provide an improved braking device.
  • the structural accommodation (space requirement, arrangement of the components, total tolerance of the components ...) of the Sensor device are improved.
  • a reliable and as precise as possible sensory detection and at the same time a space-saving integration in the magnetorheological braking device should preferably be possible.
  • the braking device according to the invention is designed magnetorheologically and is used to vary a torque of rotary movements and / or to delay rotary movements.
  • the braking device is in particular a magnetorheological operating device for setting operating states at least by means of rotary movements.
  • the braking device comprises at least one axle unit.
  • the braking device comprises at least one rotating body.
  • the rotating body can be rotated relative to the axle unit and / or about the axle unit.
  • a torque of the rotatability of the rotating body (relative to the axle unit) can be set in a targeted manner by means of at least one magnetorheological braking device.
  • the rotatability of the rotating body can be deliberately delayed and / or blocked by means of the braking device.
  • the braking device comprises at least one sensor device at least for detecting a rotational position of the rotating body, in particular in relation to the axle unit.
  • the sensor device comprises at least one magnetic field sensor connected to the axle unit in a rotationally fixed manner.
  • the magnetic field sensor is arranged radially and / or axially adjacent to at least one magnetic ring unit.
  • the sensor device comprises at least one magnetic ring unit.
  • the magnetic field sensor is arranged (at least partially or essentially or completely) within the axle unit.
  • the arrangement of the magnetic field sensor offers a considerable advantage. This enables space-saving accommodation with a particularly short tolerance chain for the components (low total tolerance or few components between the sensor attachment and the magnet attachment) and, at the same time, particularly reliable sensory detection.
  • the connection of the magnetic field sensor to the axle unit offers a particularly tolerance-optimized integration.
  • the inventive arrangement of the magnetic field sensor offers considerable advantages in utilizing the available installation space. This is a great advantage, for example, with particularly compact finger rollers or mouse wheels.
  • a particularly effective and at the same time inexpensive shielding of the sensor from the magnetic fields of the braking device can be achieved with the invention.
  • the axle unit comprises at least one axle section which radially surrounds the magnetic field sensor at least in sections.
  • the magnetic field sensor is arranged (at least partially and in particular predominantly and preferably completely) within the axle section.
  • the axle unit has at least one radial (in particular tubular) wall which at least partially provides the axle section.
  • the axle section has a lower magnetic conductivity than a core which, in particular, interacts with an electrical coil of the braking device.
  • the magnetic field sensor is not undesirably shielded from the magnetic field of the magnetic ring unit.
  • the magnetic field sensor can thereby also be protected in a particularly uncomplicated and effective manner from an undesired influence of the magnetic field of the braking device.
  • the core is made of a magnetically conductive material or comprises at least one.
  • the core is made in particular from a ferromagnetic material.
  • the core has a relative permeability of greater than 1 and preferably greater than 10 and particularly preferably greater than 100 or greater than 1000.
  • the axial section has a relative permeability of less than 10 and preferably less than 2 and particularly preferably less than 1.
  • the axle section is made of a magnetically non-conductive material or comprises at least one such material.
  • the axle section is made in particular from a paramagnetic material and / or diamagnetic material.
  • the axle section is made from a plastic. It is possible that the entire axle unit is designed such. B. made of plastic.
  • the core is then preferably formed separately and attached to or connected to the axle unit.
  • the axle unit in particular provides a support structure for fastening the braking device or comprises at least one such.
  • at least the braking device can be attached to the axle unit.
  • the rotating body is rotatably mounted on the axle unit (by means of at least one bearing device).
  • the axle section preferably provides at least a load-bearing part of the axle unit.
  • the axle section is in particular an axial section of the axle unit.
  • the axle unit then comprises at least two axle sections, namely the at least one (first) axle section and at least one further axle section.
  • the further axis section has a higher magnetic conductivity than the (one or first) Axis section on.
  • the further axis section preferably provides the core or is part of the core.
  • the axle sections can be aligned axially and / or radially to one another.
  • the further axle section axially adjoins the (one or first) axle section.
  • the further axis section can at least partially radially surround the axis section.
  • the axle section and the further axle section (or all axle sections) are firmly connected to one another, so that they preferably form the load-bearing axle unit.
  • the axle sections can be screwed and / or glued and / or joined in another suitable manner.
  • the axle section and the core are preferably (firmly) connected to one another.
  • the axle section and the core together form the axle unit or at least one (in particular load-bearing) part of the axle unit.
  • the (first) axle section forms the axle unit or a supporting part of the axle unit and the further axle section, in particular the core, is carried by the (first) axle section.
  • the axle unit can also comprise at least three axle sections.
  • the core then provides, in particular, a central axis section which is axially enclosed by the at least one (first) axis section and at least one third axis section.
  • the axle unit can also be made in one piece.
  • the axle section is then in particular an integral and, in particular, non-destructively detachable component of the axle unit.
  • the core then forms a separate component to the axle unit, which is preferably at least indirectly attachable to this.
  • the axle unit is then particularly preferably designed as a holder which, in addition to the load-bearing axle function also comprises a receiving device for the core and / or the coil.
  • the core is arranged adjacent to the (first) axial section in an axial direction.
  • at least one electrical coil (coil unit) is arranged around the core and / or within the core and is preferably wound.
  • the electrical coil is wound around the core in the axial direction and in particular spans a coil plane so that a magnetic field of the electrical coil extends transversely to the longitudinal axis of the axle unit (through the axle unit).
  • the electrical coil can be wound around the core in the radial direction and in particular span a coil plane so that a magnetic field of the electrical coil extends along or parallel to the longitudinal axis of the axle unit.
  • the rotating body is preferably designed as a finger roller and particularly preferably as a thumb roller.
  • the rotating body is preferably designed as a cylindrical component which is set in rotation by means of at least one finger.
  • the braking device is intended to be operated with only one finger.
  • the braking device is suitable and designed to be operated in a lying position.
  • the axis of rotation of the rotating body assumes a more horizontal than vertical position.
  • the braking device can be operated in a standing position (vertical alignment).
  • the braking device is in particular mostly gripped with two or more fingers.
  • the rotary body can also be designed as a rotary knob or the like and in particular contain at least one push function and / or pull function (push and / or pull).
  • the rotating body or the finger roller has a diameter of less than 50 mm and preferably less than 20 mm and particularly preferably less than 15 mm.
  • the rotating body has a maximum diameter of 12 mm.
  • larger or smaller diameters for the rotating body are also possible and advantageous for certain applications.
  • the rotating body prefferably be surrounded by at least one additional part for increasing the diameter.
  • the additional component is designed, for example, as a ring or the like.
  • the additional component can be provided with at least one contour to improve the feel and in particular be corrugated and / or rubberized or the like.
  • the magnetic ring unit is preferably arranged on an axial end face of the rotating body. This offers a particularly advantageous way of accommodating the magnetic ring unit.
  • the magnetic ring unit can be fastened directly to the axial end face. It is also possible, however, for the magnetic ring unit to be fastened to the axial end face of the rotating body via at least one connecting element. It is also possible for the magnetic ring unit to be arranged on the axial end face of the rotating body and to be fastened to a different position of the braking device via corresponding connecting elements.
  • the magnetic ring unit surrounds the magnetic field sensor at least in sections in a ring-like manner.
  • the magnetic ring unit is arranged radially around the magnetic field sensor.
  • the magnetic ring unit is arranged at least partially (preferably completely) outside the axle unit.
  • the ring magnet unit surrounds the axle section of the axle unit.
  • the magnetic field sensor is arranged centered on the magnetic ring unit in the axial direction. This is understood to mean that the magnetic field sensor is arranged in the same axial longitudinal position as the magnetic ring unit.
  • the magnetic field sensor can, however also be arranged offset in the axial direction to the magnetic ring unit.
  • such position information and in particular the information “radial” and “axial” relate in particular to an axis of rotation of the rotating body.
  • the magnetic ring unit and the magnetic field sensor are arranged in a coaxial manner with respect to one another. This offers particularly space-saving accommodation even with particularly small dimensions and, for example, with a thumb roller.
  • the magnetic field sensor is surrounded by the magnetic ring unit.
  • the magnetic field sensor is in particular centered axially and / or radially with respect to the magnetic ring unit.
  • the magnetic field sensor has a targeted radial offset to the axis of rotation of the magnetic ring unit.
  • the magnetic field sensor can, however, also be arranged offset in relation to the magnetic ring unit at least in the axial direction.
  • the magnetic field sensor is arranged offset to the axis of rotation of the magnetic ring unit. This can also be provided if, overall, a central arrangement is provided for the magnetic field sensor, for example if the magnetic field sensor is arranged within the axle unit and is surrounded in a ring by the magnetic ring unit.
  • a targeted offset of the magnetic field sensor with respect to the axis of rotation of the magnetic ring unit enables an improved angle of rotation measurement. For example, even with only two poles of the magnetic ring unit, each rotational position can be precisely defined and thus each angle can be measured as precisely as possible.
  • An absolute encoder is particularly inexpensive to implement.
  • the magnetic field sensor is arranged within the axle unit.
  • the axle unit points to this in particular at least one bore in which the magnetic field sensor is arranged.
  • the bore runs within the axle section.
  • a bore is understood to mean in particular all other suitable recesses and / or through openings, regardless of whether or not they are made by means of a drilling process.
  • the bore runs in particular in the longitudinal direction of the axle unit.
  • the bore is in particular made continuous or can also be designed as a blind hole.
  • the magnetic field sensor is arranged centered in the axle unit.
  • at least one active sensor section of the magnetic field sensor is arranged within the axle unit.
  • the entire magnetic field sensor is preferably arranged within the axle unit. It is possible that the magnetic field sensor is attached inside and / or outside the axle unit.
  • the position information for the magnetic field sensor relates in particular to at least the active sensor section.
  • the magnetic field sensor is preferably arranged in the bore of the axle unit, through which at least one electrical connection of the braking device also runs.
  • the electrical connection includes in particular at least one supply line and / or control line for the coil unit. This offers an advantageous utilization of the installation space and at the same time enables a particularly inexpensive transmission of the sensor signals.
  • the electrical connection emerges from the front of the axle unit.
  • the magnetic field sensor is arranged in particular on at least one printed circuit board.
  • the circuit board is, for example, a Print or at least includes one.
  • At least the braking device, in particular the coil unit, is preferably also electrically connected to the circuit board.
  • At least one connection line for contacting the braking device is preferably also connected to the printed circuit board. It is preferred and advantageous that the circuit board is arranged within the axle unit. It is also preferred that the connection line extends out of the axle unit.
  • the circuit board is arranged in the previously described hole.
  • the connection line runs through the bore.
  • the connection line emerges from the axle unit at one end face. This offers a particularly inexpensive and quick assembly and at the same time a compact accommodation of the corresponding components.
  • connection line comprises in particular at least one connector unit.
  • a connector unit with six or eight pins is provided.
  • the braking device can be connected particularly quickly and at the same time reliably to the component to be operated and, for example, to vehicle electronics.
  • the control unit can also be fixed in the assembly position (e.g. holder of the control unit).
  • the magnetic field sensor is preferably encapsulated in the axle unit and / or encapsulated with at least one material.
  • the bore is at least partially filled with the material for this purpose.
  • the circuit board in the axle unit is particularly preferably encapsulated with at least one material.
  • a plastic or another suitable material is preferably provided.
  • the magnetic field sensor or the circuit board can be reliably protected from external influences and, at the same time, fastened in a simple manner.
  • the magnetic field sensor is arranged on an axial end of the axle unit on the front side and particularly preferably centered on the front side.
  • the magnetic field sensor is partially arranged within the axle unit. This accommodation offers advantages in terms of sensor quality as well as the assembly effort and the space requirement.
  • the magnetic field sensor is arranged on that end face of the axle unit which is arranged within the rotating body.
  • the magnetic ring unit is preferably arranged outside the rotating body.
  • the magnetic ring unit can, however, also be arranged within the rotating body.
  • the magnetic field sensor can be arranged offset with respect to the axial direction in relation to the magnetic ring unit.
  • the magnetic field sensor can, however, also have been in the same axial longitudinal position as the magnetic ring unit.
  • the magnetic field sensor is attached directly to and / or in the axle unit.
  • the magnetic field sensor can be connected to the axle unit by means of extrusion coating or the like. It is also possible, however, for the magnetic field sensor to be attached to the axle unit by means of at least one connection structure.
  • the magnetic field sensor can also be at least partially embedded in the end face of the axle unit. It can also be provided that the magnetic field sensor is arranged radially at an axial end of the axle unit.
  • the ring magnet unit surrounds the axle unit at least in sections in a ring-like manner.
  • the ring magnet unit is arranged radially around the axle unit.
  • the magnetic ring unit is arranged in this way with respect to the longitudinal direction of the axle unit.
  • the ring magnet unit and the axle unit are arranged in a coaxial manner with respect to one another.
  • the axle unit is preferably in the center of the arrangement.
  • the magnetic field sensor is arranged at least partially between the magnetic ring unit and the axle unit.
  • the magnetic field sensor is then arranged radially inside the magnetic ring unit.
  • the magnetic ring unit then surrounds the magnetic field sensor like a ring.
  • the rotating body is rotatably mounted on the axle unit by means of at least one bearing device.
  • the bearing device comprises at least one roller bearing and / or slide bearing and / or at least one bearing of another suitable design.
  • the braking device preferably comprises at least one wedge bearing device.
  • the braking device can also be assigned at least one wedge bearing device.
  • Wedge bearing device comprises in particular at least one and preferably a plurality of rolling elements. Cylindrical and / or spherical rolling elements can be provided.
  • the wedge bearing device is designed in particular as a roller bearing or comprises at least one such.
  • the braking device is particularly suitable and designed to specifically dampen and / or decelerate and / or block the rotatability of the rotating body by means of the wedge bearing device and the coil unit and the magnetorheological medium.
  • the braking device is particularly suitable and designed to use the wedge bearing device and the coil unit and the magnetorheological medium to specifically reduce a torque for the rotatability of the rotating body after a deceleration or blocking.
  • the wedge bearing device in particular its roller bearing and preferably its roller body, is preferably axially between the magnetic ring unit and the braking device, in particular one Coil unit of the braking device, arranged. This results in a particularly advantageous spacing between the magnetic ring unit and the magnetic field of the coil unit.
  • the damping takes place in particular via the so-called wedge effect, which was already disclosed in the applicant's earlier patent applications (e.g. in DE 102018100 390.0).
  • wedge effect there are rolling bodies in the rotating body adjacent to the coil unit and axle unit.
  • the rolling elements are surrounded by magnetorheological fluid.
  • the magnetic field of the coil unit passes through the roller body via the housing of the rotating body and closes via the axle unit.
  • wedges form in the magnetorheological fluid, which brake the movement of the rolling elements and thus of the rotating element.
  • the rolling elements can be balls, cylindrical rollers or other parts.
  • the magnetic field sensor is arranged in particular axially between the wedge bearing device and the magnetic ring unit.
  • the magnetic field sensor can also be arranged axially between the coil unit and the magnetic ring unit.
  • the ring magnet unit is arranged in particular axially between the wedge bearing device and the magnetic field sensor.
  • the magnetic ring unit can be arranged axially between the coil unit and the magnetic field sensor.
  • the magnetic field sensor and / or the magnetic ring unit prefferably be arranged on that end face of the rotating body on which there is also an end face of the axle unit from which at least one signal line of the magnetic field sensor emerges, so that the signal line does not run through a magnetic field of the braking device.
  • This has the advantage that the signals from the magnetic field sensor are not transmitted through the Magnetic field of the coil device are disturbed.
  • the connection line of the braking device is also arranged on this end face.
  • An end face is understood in particular to be an axial end region.
  • the magnetic field sensor and in particular also the magnetic ring unit be arranged on that end face of the rotating body which is opposite an end face of the axle unit from which at least one signal line of the magnetic field sensor emerges.
  • signal transmission in the signal line takes place preferably optically.
  • the signals from the magnetic field sensor are not adversely affected in spite of the passage through the magnetic field of the coil device.
  • the signal transmission takes place optically at least where the signal line runs through the magnetic field of the coil device.
  • the signal line comprises, at least in sections, at least one optical waveguide or is designed as such.
  • the signal line runs at least in sections through the bore in the axle unit.
  • the signal line is preferably provided at least in sections through at least one bore in the axle unit.
  • the axis unit itself preferably serves as an optical waveguide.
  • the bore is in particular the previously described bore.
  • the magnetic field sensor is arranged in particular at the end of the axle unit or within the axle unit.
  • the magnetic ring unit and / or the magnetic field sensor are arranged within a (radial) circumferential line delimited by the rotating body.
  • the magnetic ring unit and / or the magnetic field sensor do not protrude beyond the (radial) circumference of the rotating body.
  • the ring magnet unit and / or the magnetic field sensor do not protrude beyond a radius of the Rotating body addition.
  • the magnetic ring unit and the magnetic field sensor are arranged radially inward of the circumferential line of the rotating body.
  • the circumferential line is limited by the rotating body itself and not by an additional part arranged on the rotating body.
  • the magnetic ring unit is arranged outside of a receiving space delimited by the rotating body.
  • at least one sealing device is arranged between the magnetic ring unit and the rotating body.
  • the sealing device lies sealingly against the rotating body and the axle unit in order to prevent a magnetorheological medium arranged in the receiving space from escaping.
  • the sealing device comprises in particular at least one sealing section which rests against the axle unit.
  • the sealing device comprises in particular at least one sealing section which rests on the rotating body.
  • the sealing device comprises at least one sliding seal or is designed as such. It is also possible, however, for the magnetic ring unit to be arranged within the receiving space.
  • At least one, in particular magnetically conductive, wall is preferably arranged between the magnetic ring unit and the braking device, in particular its coil unit.
  • the wall is suitable and designed to shield a magnetic field of the magnetic ring unit in such a way that it does not scatter into the braking device and / or the receiving space and thereby adversely affect the magnetorheological medium.
  • the wall comprises, in particular, a ferromagnetic and / or paramagnetic material or consists of such a material.
  • the wall can also comprise or consist of a diamagnetic material.
  • the rotating body and / or the core is also made from such a material.
  • a nickel Iron alloy with z. B. 69-82% nickel provided.
  • Other metals shielding the magnetic field are also possible.
  • the wall has a relative magnetic permeability of at least 1000 and preferably at least 10,000 and particularly preferably at least 100,000 or at least 500,000.
  • the wall is preferably provided at least partially by an end wall of the rotating body. This is in particular a closed end wall through which the axle unit does not extend. Then the wall is in particular formed in one piece with the rotating body.
  • the wall at least partially closes an open end face of the rotating body. It is then preferred that the axle unit extends through the wall. The wall then has in particular at least one through opening for the axle unit.
  • the wall is also possible and advantageous for the wall to be designed as a support structure for the sealing device.
  • at least one sealing section for the axle unit and the rotating body are fastened to the wall.
  • the wall is in particular attached to the axle unit.
  • the magnetic field sensor is arranged within a receiving space delimited by the rotating body.
  • the rotating body provides a receiving space.
  • the magnetic field sensor is separated from a magnetorheological medium arranged in the receiving space by means of at least one sealing unit.
  • the sealing unit comprises in particular at least one sealing ring (O-ring) or the like running radially around the axle unit.
  • the sealing unit lies against the rotating body and the axle unit in a sealing manner. It is preferred that the magnetic field sensor is separated from the magnetorheological medium by means of at least one wall of the axle unit.
  • the magnetic field sensor is then at least partially arranged in an end-face bulge of the rotating body.
  • the ring magnet unit then lies outside the rotating body.
  • the bulge is in particular arranged in a centered manner on the end face.
  • the magnetic field sensor is arranged in and / or on the axle unit, in particular on the front side.
  • the bulge is arranged in particular on the end face of the rotating body from which the axle unit does not protrude.
  • the magnetic field sensor can also be arranged outside of the rotating body.
  • the magnetic field sensor is suitable and designed to detect at least one axial position of the rotating body in relation to the axle unit in addition to the rotational position.
  • the magnetic field sensor is then designed as a three-dimensional magnetic field sensor.
  • the axial position is detected by means of the magnetic ring unit.
  • the axial position is detected by means of an axial position of the magnetic ring unit relative to the magnetic field sensor.
  • the operating states can also be set by means of pushing and pulling movements.
  • the braking device is suitable and designed to also set operating states by means of at least one pressure movement.
  • the pressure movement takes place in particular in the direction of the axis of rotation for the rotational movement of the rotating body.
  • the magnetic field sensor comprises at least two sensor units.
  • the sensor units are arranged radially adjacent.
  • the sensor units are preferably arranged radially around a common center.
  • the center lies in particular in a longitudinal axis or axis of rotation the axle unit. This can significantly improve the measurement result.
  • the sensor units it is possible for the sensor units to be arranged on a common printed circuit board.
  • the sensor units are arranged concentrically around the circuit board.
  • the sensor units each have at least one active sensor section.
  • the sensor units are radially surrounded by a common magnetic ring unit.
  • the rotating body can be rotated about the axle unit.
  • the axle unit is designed to be stationary.
  • the axle unit provides a support structure for components received thereon and in particular for the rotating body mounted thereon and / or for the braking device and / or for the sensor device. Provision can be made for the axle unit to be connected to at least one bracket or the like when the braking device is properly installed.
  • the axle unit comprises at least one axle, in particular a hollow axle, or is designed as such.
  • an (imaginary) longitudinal axis of the axle unit provides the (imaginary) axis of rotation of the rotating body.
  • the axle unit and the rotating body are arranged in a coaxial manner with one another.
  • axle unit it is also possible for the axle unit to be rotatable or to form the rotating part and for the rotating body surrounding the axle to be fixed. In particular, the axle unit is then rotatably received in the rotating body.
  • the axle unit can then also be referred to as a shaft.
  • the electrical connection of the (magnetic field) sensor then takes place preferably not via cables or wired, but via contacts that are movable relative to one another and not firmly coupled to one another and, for example, via sliding contacts.
  • the electrical connection of the (magnetic field) sensor can also be wireless and, for example, by inductive energy and Data transmission and / or optical transmission and / or radio transmission such. B. Wlan, Bluetooth, etc. take place.
  • the electrical connection of the magnetic field sensor can also take place via a coil spring and / or a flexible cable. This is advantageous when no or only one or only a few complete rotations are provided.
  • the at least one signal line of the magnetic field sensor is designed in this way. It is possible that the electrical contacting of the braking device (in particular the electrical coil) is designed in such a way, for. B. by means of inductive power transmission.
  • the rotating body is in particular designed like a sleeve and consists in particular of magnetically conductive material.
  • the rotating body comprises at least one rotating sleeve or is designed as such.
  • the rotating body is designed in particular as a rotary knob.
  • the rotating body is cylindrical.
  • the rotating body has, in particular, two end faces and a cylindrical wall extending between them.
  • the rotating body preferably has at least one closed end face.
  • both end faces prefferably be at least partially closed.
  • the rotating body is designed in one piece, in particular the cylindrical wall being connected in one piece to at least one end wall.
  • the axle unit extends into the rotating body and preferably into its receiving space.
  • the rotating body is designed and arranged on the axle unit in such a way that the axle unit extends out of the rotating body at an open end face.
  • the other end face of the rotating body is closed.
  • the braking device comprises in particular at least one controllable coil unit for generating a targeted magnetic field.
  • the braking device and preferably at least the coil units are in particular arranged non-rotatably on the axle unit.
  • the braking device comprises in particular at least one magnetorheological medium.
  • the medium is in particular a fluid which preferably comprises a liquid as a carrier for particles.
  • magnetic and preferably ferromagnetic particles are present in the fluid. It is also possible that the medium only comprises particles and that the carrier medium is dispensed with (vacuum).
  • the braking device can be controlled as a function of at least one signal detected by the sensor device.
  • a control device is preferably provided for controlling the braking device as a function of the sensor device.
  • the control device is suitable and designed as a function of the signal from
  • the braking device is in particular also a damper device.
  • At least one receiving space is provided for the medium.
  • the receiving space is provided by the rotating body. It is possible for further components and, for example, the wedge bearing device and / or the coil unit and / or the magnetic field sensor and / or the magnetic ring unit to be arranged in the receiving space. It is possible for the receiving space to be subdivided into sub-spaces which are sealed off from one another. A partial space is preferably provided for the magnetorheological medium. In particular, the magnetic field sensor is arranged in another subspace or not in the subspace with the medium.
  • the braking device in particular the braking device, comprises at least one wedge bearing device and preferably at least one roller bearing.
  • the Wedge bearing device preferably its rolling element, surrounded by the medium (directly).
  • the braking device preferably comprises at least one sealing device and / or at least one sealing unit in order to prevent the medium from escaping from the receiving space.
  • the receiving space is sealed off from the rotating body and the axle unit.
  • Wedge bearing device surrounds the axle unit in particular radially.
  • the sensor device is designed in particular as an absolute value transmitter.
  • the sensor device can also be designed as an incremental encoder or some other suitable type.
  • the sensor device is in particular operatively connected to the control device and / or the braking device.
  • the magnetic ring unit is designed in particular to be closed in a ring shape.
  • the ring magnet unit can also be designed to be open in the shape of a ring.
  • the ring magnet unit comprises at least one permanent magnet or is designed as such.
  • the ring magnet unit provides at least one magnetic north pole and at least one magnetic south pole.
  • the magnetic ring unit is assigned in particular at least one shielding device for shielding its magnetic field from the magnetic field of the coil unit.
  • the shielding device comprises in particular the wall described above or is provided by this.
  • the magnetic field sensor is particularly suitable and designed to detect the alignment of the magnetic field of the magnetic ring unit.
  • the magnetic field sensor is designed as a Hall sensor (in particular a 3D Hall sensor) or comprises at least one such.
  • a braking device suitable for use with the invention is also described in the patent application DE 102018 100 390.0 described.
  • the entire disclosure of DE 102018 100 390.0 hereby becomes part of the disclosure content of the present application.
  • At least one shielding device is particularly preferably included for at least partial shielding of the sensor device from a magnetic field of one or the coil unit (electrical coil) of the braking device.
  • the shielding device comprises at least one shielding body (at least in sections and in particular completely) surrounding the magnetic ring unit and at least one separating unit arranged between the shielding body and the magnetic ring unit and at least one magnetic decoupling device arranged between the shielding body and the rotating body.
  • the separating unit and the decoupling device in particular have a magnetic conductivity that is many times lower than that of the shielding body.
  • the shielding body is not arranged between the magnetic field sensor and the magnetic ring unit, so that the shielding body does not shield the magnetic field sensor from the magnetic field of the magnetic ring unit to be detected.
  • the shielding body preferably surrounds the magnetic ring unit at least on a radial outer side at least in sections and / or the shielding body surrounds the magnetic ring unit at least in sections on at least one axial side which faces the coil unit of the braking device.
  • the shielding body is preferably designed as a shielding ring with an L-shaped or U-shaped cross section.
  • the separating unit comprises in particular at least one gap running between the shielding body and the magnetic ring unit and at least one filling medium arranged in the gap.
  • the filling medium preferably connects the magnetic ring unit to the shielding body in a rotationally fixed manner.
  • the applicant reserves the right to claim a sensor device which comprises at least one axle unit and at least one rotating body rotatable relative to the axle unit at least one sensor device at least for detecting a rotational position of the rotating body.
  • the axle unit, the rotating body and the sensor device are designed as described here for the braking device according to the invention.
  • Figure 1 is a purely schematic representation of a braking device according to the invention in a sectional side view
  • FIG. 5 shows a purely schematic representation of an axle unit of a braking device according to the invention in a sectional side view
  • FIGS. 7b-7d show detailed views of the braking device of FIG. 7a
  • 8a-8e are schematic three-dimensional views of braking devices.
  • FIG. 1 shows a braking device 1 according to the invention, which is designed here as an operating device 100 and has a rotatable rotating body 3 designed as a finger roller 23 or thumb roller 102 for setting operating states. The operation takes place here at least by turning the rotating body 3.
  • the rotating body 3 is rotatably mounted on an axle unit 2 by means of a bearing device not shown in detail here.
  • the axle unit 2 here forms a first brake component 2 and the rotating body forms the second braking component 3.
  • the rotating body 3 can also be rotatably mounted on an axle unit 2 by means of a wedge bearing device 6, which is designed here as a roller bearing.
  • the wedge bearing device 6 is preferably not or only partially intended for the mounting 22 of the rotating body 3 on the axle unit 2, but is used for the braking device 4 presented below.
  • the rolling elements of the wedge bearing device 6 serve here as the braking bodies 44 described in more detail below.
  • the axle unit 2 can be mounted on an object to be operated and, for example, in an interior of a motor vehicle or on a medical device or smart device.
  • the axle unit 2 can have mounting means that are not shown in detail here.
  • the rotating body 3 can also be displaced in the longitudinal direction or along the axis of rotation on the axle unit 2. Operation then takes place both by turning and also by pressing and / or pulling or moving the rotary knob 3.
  • the rotating body 3 is designed here like a sleeve and comprises a cylindrical wall and an end wall integrally connected to it.
  • the axle unit 2 emerges from an open end face of the rotating body 3.
  • the finger roller 23 can be equipped with an additional part 33 indicated here by dashed lines.
  • an increase in diameter is achieved so that the rotatability is facilitated, for example in the case of a wheel of a computer mouse 103 or game controller that can be rotated with a finger, in particular a game pad 105, or a rotary wheel on a computer keyboard thumb roller 102.
  • the rotary movement of the rotary knob 3 is damped here by a magnetorheological braking device 4 arranged in a receiving space 13 inside the rotary knob 3.
  • the braking device 4 With a coil unit 24, the braking device 4 generates a magnetic field which acts on a magnetorheological medium 34 located in the receiving space 13. This leads to a local and strong crosslinking of magnetically polarizable particles in the medium 34.
  • the braking device 4 thereby enables a targeted deceleration and even a complete blocking and in particular also a targeted release of the rotary movement.
  • haptic feedback can take place during the rotary movement of the rotating body 3, for example by means of a correspondingly perceptible grid or by means of dynamically adjustable stops.
  • the braking device 4 here comprises an electrical connection 14, which is designed, for example, in the form of a printed circuit board 35 or prints or as a cable line.
  • the connection line 11 extends here through a bore 12 running in the longitudinal direction of the axle unit 2.
  • the receiving space 13 is here with a sealing device 7 and a sealing unit 17 is sealed to the outside in order to prevent the medium 34 from escaping.
  • the medium 34 is a magnetorheological medium 34 here.
  • the sealing device 7 closes the open end face of the rotating body 3.
  • a first sealing part 27 rests against the inside of the rotating body 3.
  • a second sealing part 37 rests on the axle unit 3.
  • the sealing parts 27, 37 are fastened and / or formed here on a support structure formed as a wall 8.
  • the sealing unit 17 is designed here as an O-ring and surrounds the axle unit 3 radially.
  • the sealing unit 17 rests against the axle unit 2 and the rotating body 3. As a result, the part of the receiving space 13 filled with the medium 34 is sealed off from another part of the receiving space 13.
  • the sensor device 5 comprises a magnetic ring unit 15 and a magnetic field sensor 25.
  • the ring magnet unit 15 is diametrically polarized here and has a north pole and a south pole.
  • the magnetic field sensor 25 is preferably designed three-dimensionally so that, in addition to the rotation, an axial displacement of the rotating body 3 with respect to the axle unit 2 can also be measured. As a result, both the rotation and a push-button function (push / pull) can be measured simultaneously with the same magnetic field sensor 25.
  • the braking device 1 can also only be equipped with a rotary function.
  • the sensor device 5 is particularly advantageous in the Integrated braking device 1.
  • the magnetic field sensor 25 is inserted into the bore 12 of the axle unit 2 here.
  • the magnetic ring unit 15 radially surrounds the magnetic field sensor 25 and is attached to the rotating body 3. This has the advantage that it is not length tolerances, but only diameter tolerances that have to be precisely produced.
  • the radial bearing clearance between the rotating rotating body 3 and the stationary axle unit 2 is correspondingly small and can also be easily controlled in series production.
  • Another advantage is that axial movements or displacements between rotating body 3 and axle unit 2 do not adversely affect the sensor signal, since measurements are made in the radial direction and the radial distance is essentially decisive for the quality of the measurement signal.
  • the arrangement shown here is particularly insensitive to dirt and liquids, since the sensor is arranged on the inside.
  • the magnetic field sensor 25 in the bore 12 can be encapsulated with a plastic, for example.
  • the magnetic field sensor 25 In order to further improve the accommodation of the magnetic field sensor 25, it is arranged here on a circuit board 35 or print. In this case, the coil unit 24 or its connection 14 is also contacted here on the circuit board 35.
  • the connecting line 11 is also connected to the circuit board 35, via which the entire braking device 1 is connected to the system to be operated.
  • a 6-pin or 8-pin plug can be attached to the printed circuit board 35, via which both the magnetic field sensor 25 and the coil unit 24 are then connected to the corresponding controller.
  • the signal line 45 for transmitting the sensor signal is also arranged here in the connecting line 11.
  • the braking device 1 can thus be installed particularly easily and quickly.
  • the printed circuit board 35 can be encapsulated in the bore 12 together with the magnetic field sensor 25 in the axle unit 2.
  • FIG. 2 an embodiment of the braking device 1 is shown which essentially differs in the structural accommodation of the sensor device 5 from the embodiment described above.
  • the magnetic ring unit 15 is arranged here on that end face of the rotating body 3 which is closed or through which the axle unit 2 does not extend.
  • the magnetic field sensor 25 a particularly space-saving accommodation is provided within the axle unit and within the rotating body 3.
  • the magnetic field sensor 25 is arranged with an active sensor part in the receiving space 13. Another part of the magnetic field sensor 25 extends into the axle unit 2 and is fastened there.
  • the magnetic field sensor 25 is located in that part of the receiving space 13 which is separated from the part with the medium 34 by the sealing unit 17. This part of the receiving space 13 lies here in a central bulge of the rotating body 3.
  • the magnetic field sensor 25 is here attached to an end face of the axle unit 2.
  • the axially offset positioning of the magnetic ring unit 15 is highly schematized here and can, for example, also lie closer to the rotating body 3, so that the magnetic ring unit 15 surrounds the magnetic field sensor 25 in an annular manner.
  • the magnetic field sensor 25 is arranged on that end face of the rotating body 3 which is opposite the exit side for the signal line 45 or the connection line 11. Therefore, the sensor signal is here by the Bore 12 in the axle unit 2 is directed to the opposite side and must therefore pass through the magnetic field of the coil unit 24.
  • the signal is transmitted optically here.
  • the light signal is simply radiated through the bore 12 of the axle unit 2 here.
  • the signal line 45 is designed as an optical waveguide at least in the area of the coil unit 24.
  • Corresponding photodiodes are provided for sending or receiving the signals.
  • FIG. 3 shows an embodiment which essentially differs in the structural design of the axle unit 2 from the embodiments described above.
  • the axle unit 2 here comprises an axle section 415 which radially surrounds the magnetic field sensor 25.
  • the axle section 415 has a lower magnetic conductivity than a core 21, which here carries a winding of the electrical coil 24 of the braking device 4.
  • the magnetic field of the magnetic ring unit 15 can penetrate the axle unit 2 particularly well in the area of the magnetic field sensor 25, so that an improved sensor resolution is possible.
  • the core 21 here provides a load-bearing second axle section 425 of the axle unit 2.
  • the axle sections 415, 425 are firmly connected here and z. B. screwed.
  • the axis sections 415, 425 are dimensioned here in such a way that the sealing part 37 rests on the core 21. Since the core 21 here consists of a harder material than the axle section 415, the sealing part 37 is reliably prevented from running into the axle unit 2.
  • FIG. 4 an embodiment of the axle unit 2 is shown in which the second axle section 425 is the first axle section 415 radially surrounds sections.
  • the second axle section 425 is here again provided by the core 21 for the coil 24.
  • the first axis section 415 is designed to be exposed in the axial area of the magnetic field sensor 25.
  • the magnetic field sensor 25 is not shielded from the core 21 there.
  • the second axle section 425 or the core 21 then radially surrounds the first axle section 415.
  • the core 21 can be installed in a particularly uncomplicated manner.
  • the wall 8 is designed to be magnetically conductive. This can prevent the magnetic field of the magnetic ring unit 15 and the magnetic field of the coil unit 24 from influencing one another unfavorably.
  • the wall 8 is formed from a metal shielding a magnetic field and, for example, from a metal with a relative magnetic permeability of at least 100,000.
  • the wall 8 is made of a nickel-iron alloy.
  • the wall 8 serves here as a connection for the sealing device 7.
  • the end face of the rotating body 3 is made of a magnetically conductive material.
  • FIG. 5 shows a detailed illustration of an axle unit 2, which here consists of three axle sections 415, 425, 435.
  • a first axle section 415 serves as a receptacle for the magnetic field sensor 25 and is designed for this purpose as described above with reference to FIGS. 3 and 4.
  • a second axle section 425 which is formed by the core 21, is connected to this here.
  • This is followed here by a third axle section 435, which forms the axial end of the axle unit 2.
  • the rotating body 3 for example, can be attached to the third axle section 435.
  • a further core 21 to adjoin the third axle section 435. In this way, a correspondingly extensive magnetic field can be used a strong braking effect can be generated.
  • the braking device 1 shown here differs from the braking devices 1 described above, in addition to the shielding device 9, in particular also in the design of the rotating body 3 and of the additional part 33.
  • the braking device 1 shown here is, for example, a mouse wheel 106 of a computer mouse 103 or a finger roller 23 or a thumb roller 102.
  • the rotating body 3 is designed here as a cylindrical sleeve and is completely surrounded on its outside by the additional part 33.
  • the additional part 33 closes off the rotating body 3 at that radial end face which faces away from the magnetic ring unit 15.
  • the additional part 33 has a radially circumferential elevation with a considerably larger diameter.
  • the braking device 1 shown here is particularly well suited as a mouse wheel 106 of a computer mouse 103 or the like.
  • the elevation is designed here with a groove, in which a particularly easy-grip material and z. B. rubber is embedded.
  • the braking device 1 shown here has two wedge bearing devices 6 spaced apart from one another.
  • Wedge bearing devices 6 are each equipped with a plurality of brake bodies 44 arranged radially around the axle unit 2.
  • the coil unit 24 is arranged between the wedge bearing devices 6.
  • the braking bodies 44 are, for example, rolling bodies which roll on the inside of the rotating body 3 or the outside of the axle unit 2 or are arranged there and have a small and in particular minimal distance to the outside of the axle unit.
  • the ring magnet unit 15 is coupled to the rotating body 3 in a rotationally test manner, so that the ring magnet unit 15 is also rotated when the rotating body 3 rotates.
  • the magnetic field sensor 25 is inserted into the bore 12 of the axle unit 2 here.
  • the magnetic ring unit 15 surrounds the magnetic field sensor 25 radially and is arranged axially at the end.
  • the magnetic field sensor 25 is arranged here with an axial offset to the axial center of the magnetic ring unit 15. This results in particularly high-resolution and reproducible sensing of the axial position of the rotating body 3 in relation to the axle unit 2.
  • the shielding device 9 comprises a shielding body 19 embodied here as a shielding ring 190.
  • the shielding device 9 also comprises a separating unit 29, which is provided here by a gap 290 filled with a filling medium 291.
  • the shielding device 9 comprises a magnetic decoupling device 39, which is provided here by a decoupling sleeve 390 and a decoupling gap 391.
  • the decoupling sleeve 190 here comprises an axial wall 392 on which the sealing device 7 is arranged.
  • a bearing device 22 (not shown in greater detail here) can be arranged on the axial wall 392.
  • the shielding body 19 is here equipped with an L-shaped cross section and made of a magnetically particularly conductive material.
  • the shielding body 19 surrounds the magnetic ring unit 15 on its radial outer side and on its axial side facing the coil unit 24.
  • the gap 290 is arranged between the shielding body 19 and the magnetic ring unit 15 and is filled with a filling medium 291.
  • the filling medium 291 has a particularly low magnetic conductivity.
  • the magnetic ring unit 15 is fastened to the shielding body 19 via the filling medium 291. Magnetic decoupling is achieved between the rotating body 3 and the shielding body 19 by the decoupling device 39.
  • the decoupling sleeve 390 and a filling medium 291 arranged in the decoupling gap 391 likewise have a particularly low magnetic conductivity.
  • the decoupling sleeve 391 is non-rotatably connected to the shielding body 19 and the additional part 33 as well as the rotating body 3.
  • the rotating body 3 is arranged here axially spaced from the decoupling sleeve 390.
  • the end of the rotating body 3 which faces the magnetic ring unit 15 does not protrude beyond the braking body 44.
  • the rotating body 3 is set back axially or shortened relative to the additional part 33. This results in a particularly advantageous magnetic and spatial separation of rotating body 3 and decoupling sleeve 390 in a very small installation space.
  • the rotating body 3 is made of a magnetically particularly conductive material.
  • the additional part 33 and the decoupling sleeve 390 are made of a magnetically non-conductive material.
  • the shielding body 19 and the rotating body 3 are here made of an m-metal, for example.
  • the components described here as being magnetically non-conductive are made of plastic, for example, and have a relative magnetic permeability of less than 10.
  • the problematic fields that can usually disturb the measurement of the angle of rotation are above all the fields in the radial direction.
  • These fields are shielded here with a shielding body 19 made of a suitable material and acting as a jacket, e.g. B. magnetically conductive steel.
  • the magnetic field of the magnetic ring unit 15 can thus be strengthened. As a result, the magnetic ring unit 15 can be made smaller (thinner) and thus material, structural volume and manufacturing costs can be saved.
  • the construction is also improved in that the wall thickness of the shielding body 19 is varied and a gap 290 is provided between the magnetic ring unit 15 and the shielding body 19.
  • the shielding and the reinforcement can be optimally adapted through the gap 290 between the magnetic ring unit 15 and the shielding body 19.
  • the material of the shielding body 19 is selected here so that it does not go into magnetic saturation so that external magnetic fields are adequately shielded (material in saturation allows magnetic fields to pass through in the same way as air, i.e. with the magnetic field constant mq).
  • the magnetic field does not close too strongly over the shielding body 19 and the field in the center of the magnetic field sensor 25 is sufficiently homogeneous and is increased compared to a magnetic ring unit 15 of the same or larger size without a shielding body 19.
  • the dimensions of the shielding device 9 shown here are particularly suitable for a mouse wheel 106 of a computer mouse 103 and have the following dimensions, for example.
  • the shielding ring 190 is 0.5 mm thick, the distance between the shielding ring 190 and the magnetic ring unit 15 is also 0.5 mm, the width of the magnetic ring unit 15 is 2 mm and the diameter of the magnetic ring unit 15 is 8 mm.
  • the possible interference field from the coil unit 24 is 140 mT, which results in a possible error in the angle measurement of 0.1 ° (cf. earth's magnetic field: approx. 48mT in Europe).
  • FIG. 7a shows a variant in which a push-pull function is integrated.
  • a button 474 can be operated and is automatically reset.
  • the diameters of the two bearing points 412, 418 are selected to be the same here.
  • the volume within the chamber does not change.
  • a shift of the first brake component 2 in the orientation of FIG. 7a to the left leads to the distance between the magnetic field sensor 25 and the magnetic ring unit 15 being increased or changed.
  • the received signal 468 changes as a result of an axial displacement as shown in FIG. 7e.
  • FIG. 7e shows the course of the amplitude 469 of the signal 468 detected by the magnetic field sensor 25 as a function of the axial displacement of the brake components 2, 3 (horizontal axis).
  • An axial displacement of the magnetic field sensor 25 with respect to the magnetic ring unit 15 changes the amplitude 469 of the detected signal 468.
  • An axial displacement or pressing down of the additional part 33 or a lateral displacement of the additional part 33 can thus be detected.
  • the angle of rotation can also be detected with the same magnetic field sensor 25, the direction of the magnetic field being determined to detect the angle of rotation.
  • the intensity determines the axial position.
  • a change in signal 468 can therefore be used to infer an axial actuation of braking device 1 or button 474. This is advantageous because a single (multi-dimensional) Hall sensor can be used to determine the angular position and to determine an axial position.
  • the first brake component 2 is arranged inside the second brake component 3 and is held in a form-fitting and / or force-fitting manner by a holder 404.
  • the holder 404 can be attached to an external console or to a device, for example.
  • the holder 404 regularly becomes non-rotatable attached.
  • the second brake component 3 is received thereon in a continuously rotatable manner relative to the first brake component 2.
  • the holder 404 can preferably be designed in two parts. This primarily simplifies the assembly of the electrical lines and, in particular, of the sensor line 45 within the first brake component 2.
  • the cables can be laid through the cable bushing or hole 12 that is open here.
  • the sensor device 5 is shown again in detail.
  • the first brake component 2 and the second brake component 3, designed here as a rotating part, are only indicated (dashed lines).
  • the sensor device 5 is supported by the decoupling device 39 on the rotatable second brake component 3 in a magnetically decoupled manner.
  • the shielding device 9 here consists of a three-part shielding body 19.
  • the magnetic ring unit 15 is used to measure the orientation or the angle of rotation of the magnetorheological braking device 1.
  • the magnetic field sensor 25 is arranged within the first brake component 2. Small relative axial displacements can also be used to detect a depression of an operating button 101, for example.
  • FIGS 8a to 8f show devices which are equipped with the invention.
  • the braking devices 1 are each designed here as a haptic operating device 100.
  • FIG. 8 a shows a haptic control button 101.
  • the control button is attached via a console 50.
  • the control button 101 is operated via the sleeve part.
  • the user interface can also be used to transmit information.
  • the braking device 1 is shown as a thumb roller 102 with a haptic operating device 100.
  • the thumb roller 102 can preferably be used in steering wheels, for example.
  • thumb roller 102 is not limited to this application.
  • the thumb roller 102 can generally also be usable with any other finger, depending on the installation situation.
  • the braking device 1 is designed as a mouse wheel 106 of a computer mouse 103.
  • the magnetorheological braking device 1 can be used to control a haptic feedback.
  • FIG. 8e shows a joystick 104 with a braking device 1 as a haptic operating device 100.
  • FIG. 8f shows a gamepad 105 with the braking device 1 in order to give the player haptic feedback as a function of the game situation.
  • the preferably low-alloy steel can retain a residual magnetic field.
  • the steel is preferably demagnetized regularly or when necessary (e.g. by a special alternating field).
  • the material FeSi3P (silicon steel or silicon steel) or a related material is preferably used for the components through which the magnetic field flows.
  • voice or sound control can be carried out.
  • the braking device can be controlled adaptively.
  • the current is preferably continuously reduced over time.
  • the current can also be varied as a function of the speed (angular speed of rotation of the rotary unit).
  • Magnet ring unit 390 Decoupling sleeve 17 Sealing unit 391 Decoupling gap 19 Shielding body 392 Axial wall

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Braking Arrangements (AREA)
  • Mechanical Control Devices (AREA)

Abstract

L'invention concerne un système de freinage (1) magnétorhéologique conçu pour ajuster des états de commande au moyen de mouvements rotatifs, comprenant un ensemble axe (2) et un corps rotatif (3) pouvant tourner par rapport à cet ensemble axe (2). Un couple permettant la rotation du corps rotatif (3) peut être modifié de manière ciblée au moyen d'un dispositif de freinage (4) magnétorhéologique. Un dispositif de détection (5) sert à acquérir une position de rotation du corps rotatif (3) et comprend un ensemble anneau magnétique (15) et un capteur de champ magnétique (25) qui est relié de manière solidaire en rotation à l'ensemble axe (2) et qui est agencé de manière radialement et/ou axialement adjacente à l'ensemble anneau magnétique (15). Le capteur de champ magnétique (25) est au moins partiellement agencé dans l'ensemble axe (2).
EP20811526.1A 2019-10-31 2020-10-31 Système de freinage magnétorhéologique, en particulier dispositif de commande Pending EP4052111A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102019129548.3A DE102019129548A1 (de) 2019-10-31 2019-10-31 Magnetorheologische Bremsvorrichtung, insbesondere Bedieneinrichtung
DE102019135030.1A DE102019135030B4 (de) 2019-12-18 2019-12-18 Magnetorheologische Bremsvorrichtung, insbesondere Bedieneinrichtung
PCT/EP2020/080613 WO2021084121A1 (fr) 2019-10-31 2020-10-31 Système de freinage magnétorhéologique, en particulier dispositif de commande

Publications (1)

Publication Number Publication Date
EP4052111A1 true EP4052111A1 (fr) 2022-09-07

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EP20811526.1A Pending EP4052111A1 (fr) 2019-10-31 2020-10-31 Système de freinage magnétorhéologique, en particulier dispositif de commande

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US (1) US20220403897A1 (fr)
EP (1) EP4052111A1 (fr)
JP (1) JP7397530B2 (fr)
KR (1) KR20220048027A (fr)
CN (1) CN114600058B (fr)
WO (1) WO2021084121A1 (fr)

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DE102021107573B4 (de) 2021-03-24 2023-05-11 Inventus Engineering Gmbh Magnetorheologische Bremsvorrichtung, insbesondere Bedieneinrichtung
DE102021111973A1 (de) 2021-05-06 2022-11-10 Inventus Engineering Gmbh Magnetorheologische Bremsvorrichtung, insbesondere Bedieneinrichtung
DE102021111965A1 (de) 2021-05-06 2022-11-10 Inventus Engineering Gmbh Magnetorheologische Bremsvorrichtung, insbesondere Bedieneinrichtung
DE102022116018A1 (de) * 2022-06-27 2023-12-28 Inventus Engineering Gmbh Haptische Bedieneinrichtung

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CN114600058B (zh) 2023-12-08
JP7397530B2 (ja) 2023-12-13
KR20220048027A (ko) 2022-04-19
JP2023500860A (ja) 2023-01-11
WO2021084121A1 (fr) 2021-05-06
CN114600058A (zh) 2022-06-07

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