| 摘要 |
<p>A torque and index detection apparatus includes a torque sensing section (4) that senses torque exerted on a connecting shaft (2) connecting a first and second shafts (50a, 50b) by a pair of magnetic sensing elements (3a and 3b) whose magnetic sensing directions are opposite, and a reference rotational position sensing section (5) that senses a reference rotational position of the second shaft (50b) by the magnetic sensing elements (3a and 3b). The reference rotational position sensing section (5) includes a pair of magnets (6) provided in the circumferential direction of the second shaft (50b) with like magnetic poles facing each other, a first magnetic part (7) that is located between the magnets (6) and the magnetic sensing elements (3a and 3b), rotates integrally with the second shaft (50b), and forms a magnetic path for magnetic flux of the magnets (6) in the reference rotational position, and a second magnetic part (8) that is provided between the magnetic sensing elements (3a and 3b), and passes the magnetic flux from the first magnetic part (7) uniformly to the magnetic sensing elements (3a and 3b).</p> |
