发明名称 |
Magnetic encoder device and actuator |
摘要 |
Provided is a magnetic encoder device capable of detecting a rotating angle of an actuator having a cavity structure. The magnetic encoder device includes a ring-shaped rotating body 11, a ring-shaped permanent magnet 12 which is inscribed in and fixed to an inner circumferential side of the ring-shaped rotating body 11 and magnetized in a direction perpendicular to a center axis of the rotating body 11, and a fixed body 13 which is disposed on an inner circumferential side of the permanent magnet 12 through an air gap and has a circular circumference and a cavity, and a magnetic field detecting element 14 disposed on an outer circumferential side of the fixed body 13 through the permanent magnet 12 and the air gap.
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申请公布号 |
US7586283(B2) |
申请公布日期 |
2009.09.08 |
申请号 |
US20040576532 |
申请日期 |
2004.10.21 |
申请人 |
KABUSHIKI KAISHA YASKAWA DENKI |
发明人 |
KABASHIMA TAKEFUMI;TOMINAGA RYUICHIRO;IMAI KAZUTOSHI;ARINAGA YUJI;OHTO MOTOMICHI;HAYAKAWA HIROTOSHI |
分类号 |
G05B19/29;G01D5/14;G01D5/16 |
主分类号 |
G05B19/29 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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