MAGNETIC GEAR DEVICE

WIPO Patent Application WO/2013/137252

A1

Provided is a magnetic gear device that can, while maintaining mechanical strength, be configured at smaller dimensions in the rotary axis direction and cause magnetic coupling between a first and second rotor with a shorter magnetic circuit compared to the conventional technology of supporting a first and second input shaft each at two locations. The present invention is provided with: a cylindrical first rotor (4) wherein a plurality of magnetic pole pairs are uniformly disposed in the peripheral direction; and a cylindrical second rotor (5) wherein a plurality of magnetic pole pairs are uniformly disposed in the peripheral direction at a pitch differing from the aforementioned magnetic pole pairs. The first and second rotor (4, 5) are disposed along a central axis in a manner so as to have an approximately matching central axis, and furthermore, the magnetic gear device is provided with a plurality of magnetic bodies uniformly disposed in the peripheral direction in a manner so as to encircle the outer periphery of the first and second rotors (4, 5). The magnetic gear device is provided with; a rotary shaft (31) protruding from the second rotor (5) towards the first rotor (4); a bearing (71) that supports the rotary shaft (31); and a bearing holding section (21a) that holds the bearing (71) at the second rotor (5) side of the first rotor (4).

MITA MASAHIRO (JP)

PCT/JP2013/056808

September 19, 2013

March 12, 2013

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HITACHI METALS LTD (JP)

F16H49/00; F16D7/02

WO2007135360A1

2007-11-29

JP2005180522A	2005-07-07
JPS6127484U	1986-02-19
JP2012031915A	2012-02-16
JP2009168101A	2009-07-30
JP2012219907A	2012-11-12

KOHNO, Hideto et al. (JP)
Hidehito Kono (JP)

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