To realize downsizing and reduction in weight by simplifying a shape and an arrangement structure of a magnetism transfer member and to make high-accurate control possible.SOLUTION: Hall elements 81a, 81b and 81c are disposed side by side at a predetermined spacing S3 on a line segment LN1 orthogonal to an axis (rotation center C) of a first sensor magnet MG1 radially outside of the first sensor magnet MG1. Magnetism transfer members 101, 102 and 103 comprise: first magnetism transfer parts 101a, 102a and 103a opposed to an end face EM1 of the first sensor magnet MG1; second magnetism transfer parts 101b, 102b and 103b opposed to detection surfaces of the Hall elements 81a, 81b and 81c; and third magnetism transfer parts 101c, 102c and 103c connecting the first magnetism transfer parts 101a, 102a and 103a with the second magnetism transfer parts 101b, 102b and 103b.SELECTED DRAWING: Figure 9
【課題】磁気伝達部材の形状および配置構造を簡素化して小型軽量化を実現し、かつ高精度で制御可能とする。【解決手段】ホール素子81a,81b,81cは、第1センサマグネットMG1の径方向外側において、第1センサマグネットMG1の軸線(回転中心C)と直交する線分LN1上に、それぞれ所定の間隔S3で並んで設けられ、磁気伝達部材101,102,103は、第1センサマグネットMG1の端面EM1と対向する第1磁気伝達部101a,102a,103aと、ホール素子81a,81b,81cの検出面と対向する第2磁気伝達部101b,102b,103bと、第1磁気伝達部101a,102a,103aと第2磁気伝達部101b,102b,103bとを連結する第3磁気伝達部101c,102c,103cと、をそれぞれ備えている。【選択図】図9
BRUSHLESS MOTOR
ブラシレスモータ
25.03.2021
Patent
Elektronische Ressource
Japanisch
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