| 摘要 |
PURPOSE:To improve the detection accuracy of a torque, by forming a cross shaped hole at the center of a sensor base to prevent the generation of a magnetic flux of the sensor base. CONSTITUTION:A detector detects a torque applied to a shaft to be measured as a voltage value with the detection coil from change in a magnetic flux formed with an exciting coil. The sensor base 31 of the detector is made of a metal conductor while a fixing hole of an exciting core 32 and fixing hole of a detecting coil 33 are formed integral as a cross shaped hole 310. On the other hand, the detecting core 33 is provided with detecting core engaging parts 330A and 330B to be engaged with the end of the cross shaped hole 310 of the sensor base 31 while the exciting core 32 is provided with exciting core engaging sections 320A and 320B respectively to be engaged with the end of the cross shaped hole 310 which holes a clearance between the core 32 and the detecting core 33 and is perpendicular to the detecting core 33. Thus, the sensor base 31 without the formation of a coil of the detecting core 33 eliminates the generation of a magnetic flux in the sensor base 31 thereby enabling a higher detection accuracy.
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