To realize miniaturization by reducing the height, regarding a sensor unit which is provided with a magnetic sphere, a permanent magnet and a magnetic sensor and used for measuring an angle of inclination or acceleration or the like.
This sensor unit is provided with a printed board 31, a block 32, a steel ball 33 in a recessed part of the block 32, a cover 34, the permanent magnet 35, GaAs Hall elements 36Y1, 36Y2, etc., a lower half case 38, and an upper half case 39. The Hall elements 36Y1, 36Y2, etc., are mounted on the printed board 31, the block 32 is fixed on an upper surface of the printed board 31, and the permanent magnet 35 is fixed on a lower surface of the printed board 31. The GaAs Hall elements 36Y1, 36Y2, etc., are arranged by using a part between the steel ball 33 and the permanent magnet 35 which are arranged face to face being isolated from each other by a specified distance. A space which is used only for arranging the GaAs Hall elements 36Y1, 36Y2, etc., is unnecessary.
FUNAKOSHI KATSUYA
ARITA TAKASHI
KATO MASAYUKI
AKIEDA SHINICHIRO
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