Patent ID: 7876005
Filing Date: 2011-01-25
Classification: G11B,H02K

Abstract:
1. A motor comprising: a rotor including a shaft defining a rotational axis, a rotor magnet rotating along with the shaft, and a turntable retaining the rotor magnet; a bearing portion having a substantially cylindrical shape arranged to rotatably support the shaft; and a housing including a tubular portion including an inner surface retaining the bearing portion; wherein the tubular portion of the housing includes a retaining claw protruding radially outward from an outer surface of the tubular portion; the turntable includes: a lid portion having a substantially circular disk shape; a substantially cylindrical portion arranged integrally with an inner peripheral edge of the lid portion; and a retaining member arranged at a bottom surface and the inner peripheral edge of the lid portion and arranged to make contact with the retaining claw so as to prevent the turntable from coming off of the housing in an axial direction, wherein the retaining member includes: an attachment base having a substantially annular shape arranged at the bottom surface of the lid portion; and a plurality of retaining portions formed integrally with the attachment base, wherein each retaining portion includes: an arm protruding axially downward; and a catching portion arranged at a lower side of the arm to make contact with the retaining claw so as to prevent the turntable from coming off of the housing; the substantially cylindrical portion includes an annular surface extending radially outward from the shaft to the inner peripheral edge; and the retaining claw is arranged radially inward of the lid portion and includes a slanted surface arranged to slant axially downward to a radially outward side and, when mounting the rotor to the housing, the slanted surface is positioned below the annular surface and extended from an area axially above the lid portion to an area axially below a bottom surface of the lid portion so that the retaining claw contacts the catching portion.