| 摘要 |
PROBLEM TO BE SOLVED: To increase the detection output width of a detection coil in a torque sensor, and to improve detection accuracy and sensitivity. SOLUTION: This torque sensor has the first cylinder 31 fixed on an input shaft 14 and having a magnetic path formation part 31A formed on the end face, the second cylinder fixed on an output shaft 15 and having a magnetic path formation part 32A facing to the magnetic path formation part 31A of the first cylinder 31 and formed on the end face, and a cylinder body 33 for storing the detection coil 35 constituting a magnetic circuit together with the first and second cylinders 31, 32. In the sensor, the magnetic path formation parts 31A, 32A formed on the end faces of the first and second cylinders 31, 32 comprise ridged parts of teeth 41, 42 formed on the end faces of the cylinders 31, 32, and shielding materials 51, 52 comprising a non-magnetic material are filled in grooved parts of the teeth 41, 42. COPYRIGHT: (C)2005,JPO&NCIPI
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