| 摘要 |
PROBLEM TO BE SOLVED: To provide a ventilating opening excellent in practicability that liquid, such as an oil content, moving through the ventilating opening is reliably guided to a liquid reservoir and leakage of liquid through the ventilating opening is reliably prevented form occurring. SOLUTION: In a ventilating opening (a) annexed to a tube 1 having a ventilating function, the ventilating opening (a) comprise a cylinder 2 fitted in the tube 1, and a ventilating cylinder 5 connected to the cylinder 2 and provided at a low part with a liquid reservoir 8. A liquid induction part 6 protruding to the front side from a connection part between a ventilating cylinder 5 and the cylinder 2 and inducing liquid 12, such as oil, in the tube 1 and the ventilating opening (a) to the liquid reservoir 8 is protruded from the cylinder part 2. |
