Patent ID: 8004134
Filing Date: 2011-08-23
Classification: H02K

Abstract:
1. A rotary actuator, comprising: an electric motor in which a rotor and a ring-shaped stator core that is positioned so as to encircle the rotor and that has a plurality of stator teeth around which coils are wound are housed inside a housing, wherein the stator core is insert molded in a molded frame portion that constitutes the housing, and wherein the housing is provided with a pair of frame bodies that are placed on both sides of the molded frame portion so as to sandwich the molded frame portion in the axial direction of the stator core, and that respectively support both end portions of the shaft portion of the rotor via bearings, and wherein through holes through which identical reference pins are press-inserted in the axial direction are formed respectively in the molded frame portion and the pair of frame bodies, said rotary actuator further comprising, a reduction gear that is located on one end portion of a shaft portion of a rotor that is provided in the electric motor, and transmits rotation force from the electric motor to an external output shaft with the rotation rate being reduced.