| 摘要 |
<p>A torque sensor 2 detects a torque acting on a torsion bar 21 1 provided between a first shaft 11 and a second shaft 12 on the basis of a magnetic flux density led to a rotating magnetic circuit portion 25 from a magnetism generating portion 22. The magnetism generating portion 22 includes a back yoke 24 and a ring magnet 23. The back yoke 24 includes a fitting portion 61D fitted onto the first shaft 11, a joint portion 61A, 61B to which the ring magnet 23 is joined, and a stress reduction cutout 50, 55, 56 that suppresses a transmission of a deformation stress generated in a radial direction of the fitting portion 61D to the joint portion 61A, 61B.</p> |
