| 摘要 |
PROBLEM TO BE SOLVED: To satisfy both firm arrangement of a PCV valve at a separator and ensurance of sufficient sealing ability. SOLUTION: A mounting cylinder part 4 is formed at the upper part of a separator 3 to separate oil mist of an engine and blowby gas from each other. A part of a PCV valve 6 is fitted in the mounting cylinder part 4 and slip-off prevention of the PCV valve 6 from the mounting cylinder part 4 is effected by a cap member 7 releasably from engagement fitted in the outer periphery of the mounting cylinder part 4. A fit-in portion between the mounting cylinder part 4 and the PCV valve 6 is sealed by a seal ring 5. Through engagement of a lock claw part 21, formed on the outer peripheral surface of the mounting cylinder part 4, with a lock hole 23 formed in the the peripheral wall part 7b of a cap member 7, slip-off prevention of the cap member 7 from the mounting cylinder part 4 is effected. By forming a side slope 21b on the side on one side in a peripheral direction of the lock claw part 21, by rotating the cap member 7 in a given direction, disengagement between the lock claw part 21 and the lock hole 23 is facilitated.
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