Patent ID: 7917067

Claim:
A magnetic field generating member, comprising: a main body; a groove provided in the main body; an interposition member configured to be fitted in the groove of the main body and including a concave portion; and a magnetic member fixed into the concave portion of the interposition member, the interposition member having a “U” character like-shape in section and being configured to be fixed in the groove provided in the main body by press-fitting, the magnetic member being a long magnetic compact and configured to be fixed into the concave portion of the interposition member by press-fitting, the groove provided in the main body including a pair of side surfaces, the pair of side surfaces having a pair of straight surfaces shaped mutually parallel in the vicinity of an opening part of the groove provided in the main body, and a pair of tapered surfaces shaped so that mutual intervals between the pair of tapered surfaces gradually narrow from lower ends of the straight surfaces towards a bottom surface of the groove provided in the main body the closer to the bottom surface, the concave portion of the interposition member including a pair of wall sections, an external surface of the pair of wall sections in the interposition member respectively coming into close contact with the pair of tapered surfaces, and an upper end of the pair of wall sections being respectively shaped to be positioned in a boundary between the straight surface and the tapered surface.