Patent ID: 9236780
Filing Date: 2016-01-12
CPC Classification: F16C,H02K

Claim Text:
1. A rotary actuator comprising: a rotor spindle being rotatable; a rotor core being rotatable integrally with the rotor spindle; a stator configured to apply a magnetism to the rotor core to rotate the rotor core; a housing including a magnet affixed to an end of the rotor core on a side of the first bottom portion and rotatable integrally with the rotor core; a magnetic sensor affixed to the first bottom portion, such that the magnetic sensor forms a gap with the magnet in an axial direction, the magnetic sensor configured to receive a magnetic field caused by the magnet and to send a pulse signal in synchronization with rotation of the rotor core; a bearing configured to rotatably support the rotor spindle, the bearing including a bearing holder unit joined to the housing; a stator holder unit fitted to the stator; and a joint unit connecting the bearing holder unit with the stator holder unit, wherein the bearing holder unit is integrally formed with the bearing holder unit, the stator holder unit, and the joint unit are integrally formed of a metallic material and are insert-molded of a resin material to be integrally joined with the housing, and the bearing holder unit other than the outer ring affixed portion is not in contact with the outer ring of the bearing.