| 摘要 |
The air breather is formed with a breather body coupled to a transmission body, and a cap coupled to an upper part of the breather body. The breather body defines first and second spaces communicating therebetween by an air channel. The first space is coupled with a first piston which slides to open and close the air channel in response to internal pressure applied to both lateral surfaces thereof. The second space is coupled with a second piston which slides in response to air having passed through the air channel and is further equipped with oil return holes for oil having passed through the air channel from the first space and having been separated to return into the first space, such that the oil and the air are effectively separated to prevent oil leakage.
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