DUST-PROTECTIVE CYCLING LUBRICATING STRUCTURE OF AN ELECTRIC FAN
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United States of America Patent
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N/A
Issued Date -
Dec 21, 2006
app pub date -
May 26, 2006
filing date -
Jun 15, 2005
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An dust-protective cycling lubricating structure of an electric fan is disclosed to include a hub defining a receiving chamber, a shaft rotatably mounted in the hub, an axle bearing mounted in the receiving chamber to support the shaft and defining with a top cover of the hub an oil-spreading space and a bottom cover of the hub an oil accumulation space. Lubricating oil is guided upwards by guide grooves on the shaft to lubricate the shaft and the axle bearing and to be further spread over the oil-spreading space and then returned to the oil accumulation space due to the effect of the centrifugal force during rotation of the shaft with a fan blade assembly.
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