Title:
ローターアセンブリ
Document Type and Number:
Japanese Patent JP4668196
Kind Code:
B2
Abstract:
A rotor assembly for an electronic machine such as a motor includes a rotor on a shaft having a bearing at each end portion, the bearings being arranged to rotatably support the rotor and shaft. The assembly further includes a balancing member, from which material may be removed for balancing the rotor assembly. The balancing member is located in a predetermined position and orientation with respect to the rotor. The balancing member includes an encoder disk, arranged to permit positioning of the rotor with respect to a stator. The provision of a balancing member having an integral encoder disk facilitates the manufacture of the rotor assembly. As the balancing member is located in a predetermined position, the encoder automatically assumes a predetermined position and hence the position of the rotor can be determined with certainty.
Inventors:
Matthew John Child
Peter Lee Crossley
Peter Lee Crossley
Application Number:
JP2006526697A
Publication Date:
April 13, 2011
Filing Date:
September 17, 2004
Export Citation:
Assignee:
Dyson Technology Limited
International Classes:
H02K1/24; A47L5/22; F04D29/66; F16C27/04; F16C27/06; F16C33/72; H02K5/173; H02K7/04; H02K7/14; H02K15/16; H02K29/10; H02K37/04; H02K5/24; H02K9/06
Domestic Patent References:
| JP2003134737A | ||||
| JP7115761A |
Foreign References:
| EP0905862A2 | ||||
| US4969797 |
Attorney, Agent or Firm:
Yasuhiko Murayama
Masatake Shiga
Takashi Watanabe
Shinya Mitsuhiro
Masatake Shiga
Takashi Watanabe
Shinya Mitsuhiro