| 摘要 |
PROBLEM TO BE SOLVED: To provide structure capable of eliminating additional work for a rotary shaft, and capable of simplifying winding method for an exciting/detecting coil of a magnetic head to easily enhance the sensitivity that depends on the winding number, in a magnetostrictive type rotary shaft torque sensor. SOLUTION: Rectangular soft magnetic parts are arrayed alternately along the circumferential direction via a space in a rotary shaft 10 having magnetostrictive characteristics, the each soft magnetic part is inclined at about 45°with respect to the rotary shaft, and a torsional stress of the rotary shaft is precisely detected by the magnetic head, with the coil being wound in the outer circumference thereof. COPYRIGHT: (C)2007,JPO&INPIT
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