| 摘要 |
PURPOSE:To decrease the number of parts of a valve, by setting plural teeth on a valve rubber guard, for fixing the valve rubber guard and a plunger by these teeth. CONSTITUTION:A ring groove (a) is formed on a plunger 1. Plural teeth (b) which form a divided engaging hole 4 whose inside diameter d3 is shorter than the outside diameter d1 of the plunger 1, and is almost the same as the diameter d2 of the groove (a), at the center of a valve rubber guard 2, are formed. A valve rubber 3 is fixed on the valve rubber guard 2, by engaging the divided engaging hole 4 formed by plural teeth b, with the groove (a). With this constitution, the number of parts of the valve can be decreased, and moreover, the assembling ability can be raised.
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