Linear motor and electric device with linear motor
AssigneeBraun GmbH
InventorsUwe Schober, Frank Ziegler, Robert Schaefer
Life of this patent
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Abstract
A linear motor includes an armature mounted for driven linear oscillation substantially along a longitudinal direction; a secondary mass mounted for linear oscillation substantially along the longitudinal direction; and a coupling unit for coupling the armature and the secondary mass. The coupling unit includes at least two coupling spring assemblies and at least a coupling element, the coupling spring assemblies being arranged in planes perpendicular to the longitudinal direction and being spaced apart from each other, and the coupling element being fixedly connected with the coupling spring assemblies.
Claims10
A linear motor comprising
- an armature mounted for driven linear oscillation substantially along a longitudinal direction;
- a secondary mass mounted for linear oscillation substantially along the longitudinal direction;
- and
- a coupling unit for coupling the armature and the secondary mass;
- wherein the coupling unit includes at least two coupling spring assemblies and at least a coupling element, the coupling spring assemblies being arranged in planes perpendicular to the longitudinal direction and being spaced apart from each other, and the coupling element being fixedly connected with the coupling spring assemblies.
A flat leaf spring for a linear motor, comprising:
- an inner fastening section;
- an outer fastening section;
- and
- a spring arm connecting the inner fastening section and the outer fastening section, wherein the flat leaf spring is made from a single sheet such that the inner fastening section, the spring arm, and the outer fastening section are integral with each other, wherein the spring arm spirals around the center of area of the inner fastening section and the flat leaf spring is oblate in its plane of extension such that a ratio between a width of the leaf spring and a height of the flat leaf spring has a value of at least about 1.33, the direction in which the height is measured being perpendicular to the direction in which the width is measured.
Dependencies are inferred from the claim text.