Electric Drive Unit For Generating An Oscillating Displacement
AssigneeBraun GmbH
InventorsGerhard Kressner, Alexander Schroter, Christian Junk, Peter Hilfinger, Hansjorg Reick, Bernhard Kraus, Uwe Schober
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Abstract
An electric drive unit for generating an oscillating movement, having a stator, a rotor, a torsion element and a tuning element. The tuning element acts upon the torsion element and serves to mechanically tune the resonant frequency of the drive unit.
Claims18
An electric drive unit for generating an oscillating movement, the drive unit comprising:
- a stator;
- a rotor;
- a torsion element;
- and
- a tuning element, which acts upon the torsion element and serves for mechanically tuning the resonant frequency of the drive unit, wherein the rotor comprises a hollow shaft, and wherein the torsion element is at least partially arranged within the hollow shaft.
A method of manufacturing an electric drive unit for generating an oscillating movement, wherein the drive unit comprises a stator, a rotor, a torsion element and a tuning element, and wherein the resonant frequency of the drive unit is mechanically tuned, the method comprising:
- exciting the drive unit to generate an oscillating movement;
- and
- determining from the oscillating movement a desired location on the torsion element for securing the tuning element to tune a resonant frequency of the drive unit.
Dependencies are inferred from the claim text.