Title:
SENSOR UNIT, MAGNETIC BEARING UNIT USING THE SENSOR UNIT AND MAGNETIC BEARING SPINDLE DEVICE
Document Type and Number:
Japanese Patent JP2003307219
Kind Code:
A
Abstract:
To reduce a cost and to improve the reliability of a magnetic bearing spindle device by simplifying a manufacturing method of a position detecting sensor of a rotor built in a pump body.
A sensor coil 101 is arranged on a first printed circuit board 103, and the sensor coil is fixed to a second printed circuit board 102 via a fixing block 104 to constitute a sensor. Respective sensor parts are easily and accurately made by forming signal transmission patterns on the printed circuit boards 102 and 103, and the individual difference of a sensor unit can also be reduced, and the cost is reduced, and the reliability is improved.
More Like This:
Inventors:
OZAKI TAKAMI
Application Number:
JP2002110830A
Publication Date:
October 31, 2003
Filing Date:
April 12, 2002
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F04D19/04; F16C32/04; (IPC1-7): F16C32/04; F04D19/04
Attorney, Agent or Firm:
Fukami Hisaro (3 outside)