CORELESS MOTOR

WIPO Patent Application WO/2020/016948

A1

The present invention enables a reduction in the size of a coreless motor, in the center of which is fixed a rotary shaft extending in the axial direction, and in which a cylindrical part is concentrically disposed radially outward of the rotary shaft and serves as an output rotation body.　A fixed shaft extends through the center of the coreless motor in the axial direction. A cylindrical coil extends in the extension direction of the fixed shaft, is concentrically disposed with respect to the fixed shaft, and has the end surface of one side supported by a stator fixed to the fixed shaft. A rotor is rotatably disposed with respect to the fixed shaft and comprises a magnet which is disposed radially outward of the rotor, the outer circumferential surface of the magnet facing the inner circumferential surface of the cylindrical coil. A cylindrical housing comprises a housing cylindrical part that is disposed radially outward of the cylindrical housing and concentrically with respect to the fixed shaft, and that rotates about the fixed shaft. A rotary motion transmission mechanism incorporated into the cylindrical housing transmits the rotary motion of the rotor about the fixed shaft to the rotary motion of the cylindrical housing about the fixed shaft. The inner circumferential surface of the housing cylindrical part, which faces the outer circumferential surface of the cylindrical coil, is formed from a magnetic material.

SHIRAKI MANABU (JP)

PCT/JP2018/026842

January 23, 2020

July 18, 2018

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THINK TECH CO LTD (JP)

H02K21/22; H02K7/116

JP6278432B1	2018-02-14
JP2012010572A	2012-01-12
JPS5734157U	1982-02-23
JPH05199719A	1993-08-06

WAKUI Kenichi et al. (JP)

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