TORQUE DETECTING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a low-cost torque detecting device with a good detection sensitivity and measurement accuracy. SOLUTION: The torque detecting device is provided with a torque detecting shaft 1 on which torque is impressed from the outside and a pair of magnetic field sensors 3a and 3b provided in the vicinity of the surface of the torque detecting shaft. The torque detecting shaft 1 comprises magnetostrictive characteristics and at least six magnetized bands 2a-2f magnetized in the circumferential direction and each polarized in such a way that the magnetized directions of the adjacent magnetized bands are in the directions opposite to each other.