JP2005278309A5 - - Google Patents

Claims (4)

An electric motor,
A rotating part having a shaft fixed at one end to a predetermined part;
A fixing part formed of a porous material impregnated with lubricating oil and having a sleeve into which the other end of the shaft is inserted;
A drive mechanism for rotating the rotating part relative to the fixed part about the central axis of the shaft;
With
The fixing part is
A bottomed substantially cylindrical sleeve holding portion into which the sleeve is inserted;
On the inner peripheral surface of the sleeve holding portion, a recess formed outward in the circumferential direction ;
An oil retaining member held in the recess and impregnated with the lubricating oil;
Have
And the outer peripheral surface of the sleeve, Oite between the inner peripheral surface of the sleeve holding portion opposing thereto, constant gap oozing width or more of the oil from the outer peripheral surface of the sleeve is formed, the fixed gap the characterized in that from the recess of the sleeve holding portion located at the one end side, a motor. The motor according to claim 1,
It has the large-diameter oil scattering preventing portion from said end surface abuts against the end face of one end side of the sleeve,
A position corresponding to one end surface of the sleeve in the inner peripheral surface of the sleeve holding portion, to form a small inclined face accordance inner diameter toward the said one end side, the outer peripheral end surface of the oil scattering preventing portion and the inclined surface A small gap smaller than the predetermined gap is formed between the motor and the motor. The motor according to claim 1 or 2,
The constant gap is 0.1 mm or more. The motor according to any one of claims 1 to 3,
A motor, wherein the shaft is attached in a horizontal state.