| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotation sensor accurately measuring a rotation angle of a measured rotating body even if shaft play, etc. are developed in a rotary shaft of the rotating body. SOLUTION: This rotation sensor detecting a rotation angle of the measured rotating body is mounted on the rotating body to detect the magnetic flux density of a magnet 10 by means of a magnetic detection element 40, with the magnet 10 rotating in one body with the rotating body, By this rotation sensor 1, the rotation angle of the rotating body can be accurately measured even if shaft play, etc. are developed in the rotary shaft of the rotating body since the detection element 40 is disposed at a position in the vicinity of the midpoint of a route from an N pole to an S pole drawn by magnetic force lines of the magnet 10. COPYRIGHT: (C)2008,JPO&INPIT
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