发明名称 |
Downsized sensor unit with increased accuracy |
摘要 |
A sensor unit includes a support body having a concave surface, a spherical body formed of a magnetic material and placed on the concave surface of the support body so as to roll freely thereon, a permanent magnet producing a magnetic field affecting the magnetic spherical body, and a magnetic sensor detecting a change in the magnetic field caused by the movement of said magnetic spherical body. The magnetic spherical body and the permanent magnet are provided to oppose each other with a given distance therebetween in a vertical direction. The magnetic sensor is provided between the magnetic spherical body and the permanent magnet. An output is produced in accordance with the detection by the magnetic sensor.
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申请公布号 |
US2002144418(A1) |
申请公布日期 |
2002.10.10 |
申请号 |
US20020101831 |
申请日期 |
2002.03.21 |
申请人 |
NAGANO FUJITSU COMPONENT LIMITED |
发明人 |
ENDO MICHIKO;FUNAKOSHI KATSUYA;ARITA TAKASHI;KATO MASAYUKI;AKIEDA SHINICHIRO |
分类号 |
G01C9/06;G01C9/10;G01P15/03;G01P15/105;G01P15/18;(IPC1-7):G01C9/06 |
主分类号 |
G01C9/06 |
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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