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Patent Searching and Data


Title:
MOTOR
Document Type and Number:
Japanese Patent JP2019170038
Kind Code:
A
Abstract:
To provide a motor capable of detecting a rotating state of a rotating body with high accuracy and facilitating manufacture.SOLUTION: A motor 10 comprises: a rotating shaft 40 rotated by rotation of a rotor; a first sensor magnet 46 having a plurality of magnetic poles aligned in a rotating direction of the rotating shaft 40 and attached to the rotating shaft 40; a control board 22 that is arranged with a radial direction of the rotating shaft 40 being a plate thickness direction and has a first surface 22A that faces a first sensor magnet 46 side and a second surface opposite to the first surface 22A; and three rotation sensors 58A, 58B, 58C that are mounted on the first surface 22A and output an electric signal as the sensor magnet 46 rotates with each phase being shifted. The three rotation sensors 58A, 58B, 58C are arranged on the control board 22 so that an amount of magnetic flux in which magnetic flux from the sensor magnet 46 crosses becomes equal.SELECTED DRAWING: Figure 2A

Inventors:
ITO HIROTAKA
UTSUMI AKIHIRO
Application Number:
JP2018055262A
Publication Date:
October 03, 2019
Filing Date:
March 22, 2018
Export Citation:
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Assignee:
DENSO CORP
International Classes:
H02K11/215; G01B7/30; G01D5/245; H02K7/116; H02K11/30; H02K29/08
Attorney, Agent or Firm:
特許業務法人太陽国際特許事務所
中島 淳
加藤 和詳
福田 浩志