| 摘要 |
PROBLEM TO BE SOLVED: To provide a noncontact-type displacement sensor device which is less affected, even if there is a magnetic substance in the surrounding, and which has high detection accuracy. SOLUTION: At least three erected core portions 15 are installed erected at fixed intervals on a core base 14, and a coil 12 is provide on the core base 14 so that the erected portion 15 at the center is interposed in between. As a result, magnetic flux from the coil 12 arranged so that the erected core portions 15 at the center is located between, passes via the erected core portions 15, and subsequently, is divided and reaches the erected core portions 15 of both sides located at one side of an end section, and leakage flux can be reduced. As a result, even if there is a magnetic substance in the surrounding, influence on the magneic substance due to the leakage magnetic flux can be lessened. COPYRIGHT: (C)2008,JPO&INPIT
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