DRIVE SYSTEM FOR INDIVIDUAL CARE DEVICE AND METHOD FOR OPERATION THEREOF Russian patent published in 2019 - IPC A61C17/22 

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment and is intended for use in electric toothbrushes. Electric toothbrush with active damping device comprises housing, first and second bearings, first and second biasing elements, outer stator and inner rotor. Body has at least one wall and an opening, at the same time at least one wall forms at least part of the cavity. First and second bearings are located at a distance from each other inside the cavity, wherein the first and second bearings are rigidly connected to the housing inside the cavity. Rigidity of first and second biasing elements springs is essentially identical. Outer stator comprises stator casing, movably connected inside cavity, wherein outer stator is made with possibility of translational movement both along axis and pivotally in range of movement relative to housing. Stator and/or rotor includes weights for stator and/or rotor weight adjustment for adjustment of inertial characteristics in axial and/or rotary direction. Inner rotor comprises rotor arranged partially in casing and made with possibility of translational movement both along axis and pivotally in range of motion relative to outer stator. Rotor comprises output shaft and section, which includes at least one magnet, wherein output shaft passes (i) through said section, (ii) through cavity of stator casing and (iii) through openings in first and second bearings. Said stator casing further comprises a section having at least one electromagnet configured to generate a magnetic field for interaction with the magnetic field of said at least one rotor magnet for (i) reciprocating actuation of both inner rotor and outer stator linearly and rotary relative to housing and (ii) displacement of inner rotor and outer stator are in phase with each other both linearly and rotary for cushion vibration damping.

EFFECT: invention allows damping vibrations to reduce linear and angular oscillations in an electric toothbrush with active damping of vibrations due to the possibility of the rotor to translationally move both along the axis and rotationally, and also to perform translational and rotary motions.

6 cl, 9 dwg