Patent ID: 8528422

Claim:
A torque and index detection apparatus comprising: a torque sensing section that senses torque exerted on a connecting shaft that connects a first shaft and a second shaft that are rotated by a steering operation, by a pair of magnetic sensing elements placed with their magnetic sensing directions opposite to each other; and a reference rotational position sensing section that senses a reference rotational position of the connecting shaft by the pair of magnetic sensing elements of the torque sensing section, wherein the reference rotational position sensing section includes a pair of magnets provided in a circumferential direction of the second shaft with like magnetic poles facing each other, a first magnetic part that is located between the pair of magnets and the pair of magnetic sensing elements, is provided so as to rotate integrally with the second shaft, and forms a magnetic path for magnetic flux of the pair of magnets in the reference rotational position, and a second magnetic part that is provided between the pair of magnetic sensing elements, and passes the magnetic flux from the first magnetic part uniformly to the pair of magnetic sensing elements.