| 摘要 |
PROBLEM TO BE SOLVED: To provide an electromagnetic actuator in which a function loss caused by a burr is eliminated by sealing the generated burr even in the case where the burr is generated when pressing a stopper in.SOLUTION: In a PCV, a concave portion 12 (recessed portion) which increases capacitance of a press-in space is provided on a closed face Y (top face) of a stopper 11. The volume of the press-in space after pressing a stopper 11 in is increased by the concave portion 12, thereby reducing a volume ratio. Thus, even when the press-in space is provided as a sealed space, increase in compression pressure of air can be suppressed and trouble where the stopper 11 is ejected from a press-in hole 10 by compressed air can be avoided. Since the press-in space is sealed with respect to the outside by pressing-in, even if a burr B is generated in the case of pressing-in, the generated burr B can be sealed within the press-in space, thereby improving reliability of the PCV. Furthermore, the concave portion 12 can be worked more easily in comparison with an air-breathing hole of the prior arts, thereby suppressing cost. |
