| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing with a multiple rotation absolute angle detecting function for accurately performing multiple rotation absolute angle detection while avoiding the influences of an external magnetic field and the internal magnetic interference of rotation detecting parts with each other. SOLUTION: The bearing with the multiple rotation absolute angle detecting function comprises multiple rotation absolute angle detecting mechanisms mounted on bearing parts 21A, 21B which have outer rings 23A, 23B and inner rings 22A, 22B relatively rotatable via rolling elements, respectively, for detecting at least one rotation and a rotation absolute angle. The multiple rotation absolute angle detecting mechanisms each have a multiple rotation detecting part 3 and a one-rotation detecting part 18 for magnetically detecting the rotation. A housing 11 storing the multiple rotation absolute angle detecting mechanism 1 is formed of a non-magnetic material and an external magnetic field shielding material 27 is provided outside the housing 11. COPYRIGHT: (C)2007,JPO&INPIT
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