| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that, in the conventional venting method of an ejector pin, for performing exhaust with the outer circumferential part as a passage, owing to the sticking of vaporized decomposed products generated from a gas and an additive, and burrs generated in the case a gas bent is large, the clearance of a sliding part is clogged, thus a working defect is produced. SOLUTION: By locating the passage of venting at the inside of an ejector pin not close to a sliding part, the exhaust of a gas is performed without causing the problem of a working defect. COPYRIGHT: (C)2011,JPO&INPIT
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