Patent ID: 9360295
Filing Date: 2016-06-07
CPC Classification: G01B,G01D

Claim Text:
1. A rotational position sensing apparatus comprising: a rotational position sensing magnet that generates a magnetic flux that is used for sensing a rotational position of a rotatable body; and a fixing member that is made of a non-magnetic material and is fixed to a rotatable shaft of the rotatable body to rotate integrally with the rotatable shaft, wherein: the fixing member includes a first peripheral wall portion, which is configured into a tubular form, and a bottom wall portion, which radially inwardly extends from one axial end part of the first peripheral wall portion; the rotational position sensing magnet is held in a space, which is defined by the first peripheral wall portion and the bottom wall portion; the fixing member includes a plurality of projections, which radially inwardly project and are arranged one after another in a circumferential direction at an inner peripheral surface of the first peripheral wall portion within the space, which is defined by the first peripheral wall portion and the bottom wall portion and holds the rotational position sensing magnet; and each of the plurality of projections is embedded into and is engaged with the rotational position sensing magnet to limit movement of the rotational position sensing magnet relative to the fixing member in both of the circumferential direction and an axial direction.