Motor rotor structure
AssigneeSunonwealth Electric Machine Industry Co., Ltd.
InventorsAlex Horng, Shih-Chang Huang
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Abstract
A motor rotor structure includes a rotor having a center from which an axial seat protrudes for coupling with a shaft. The axial seat extends into an axial tube through which the shaft extends. A gap smaller than 1 mm exists between the axial seat and an inner circumferential wall of the axial tube. The axial seat includes a non-planar bottom face having a difference in height from a center of the shaft to a circumferential edge of the bottom face. The lubricating oil leaving an axial hole of a bearing in the axial tube impacts the bottom face and then flows back into the bearing along the bottom face. Outflow and loss of the lubricating oil are thus avoided.
Claims5
A motor rotor structure comprising a rotor, an axial seat protruding from a center of the rotor for coupling with a shaft, the axial seat extending into an axial tube through which the shaft extends, a gap smaller than 1 mm existing between the axial seat and an inner circumferential wall of the axial tube, the axial seat including a non-planar bottom face having a difference in height from a center of the shaft to an outer circumferential edge of the bottom face.
Dependencies are inferred from the claim text.