Title:
Magnetic coupling
Document Type and Number:
Japanese Patent JP5948428
Kind Code:
B2
Abstract:
The purpose of the invention is to provide a magnetic coupling that can be used even when there is a pressure difference between the interior and the exterior of container for a rotating shaft or even in a corrosive environment such as seawater. The present invention therefore is a magnetic coupling having a rotating shaft having a plurality of first magnets fixed thereto, and a rotated shaft having a plurality of second magnets fixed thereto and being disposed coaxially with respect to the rotating shaft, the magnetic coupling transmitting the rotation torque of the rotating shaft to the rotated shaft using the attraction force between the first and second magnets. Two partitions made from a fiber-reinforced resin are provided between the rotating shaft and the rotated shaft, an intermediate rotor made from a fiber-reinforced resin is interposed between the partitions, the intermediate rotor fixes a plurality of third magnets in place and is capable of rotating between the two partitions, and a sliding member is fixed to the surface of the intermediate rotor.
Inventors:
Hiroshi Aoyama
Application Number:
JP2014539484A
Publication Date:
July 06, 2016
Filing Date:
October 01, 2012
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
F16D7/02; F16H49/00
Domestic Patent References:
| JP2002527218A | 2002-08-27 | |||
| JP2008039045A | 2008-02-21 | |||
| JP2012031915A | 2012-02-16 | |||
| JPS63257451A | 1988-10-25 | |||
| JP2006083920A | 2006-03-30 | |||
| JPH08319391A | 1996-12-03 | |||
| JP2001279285A | 2001-10-10 | |||
| JPH1171469A | 1999-03-16 |
Foreign References:
| WO2012014596A1 | 2012-02-02 |
Attorney, Agent or Firm:
Polaire Patent Business Corporation