| 摘要 |
PURPOSE: A double poppet solenoid valve is provided to stably move working fluid inside a sleeve even in a high pressure condition because the working fluid flows in and out through a second orifice and a second passage and both second orifice and the second passage are sealed by a main poppet and a pilot poppet. CONSTITUTION: A double poppet solenoid valve comprises a pilot poppet(40), a main poppet(50), and a plunger(60). First and second orifices(41,42) and a first chamber(43) are formed in the pilot poppet. The first and second orifices are inserted into a sleeve and linearly move to left and right sides. Working fluid flowing into the first orifice is accommodated in the first chamber. A second chamber(53) is formed in the main poppet. The working fluid flowing into the first chamber is transferred through a third passage(52) formed along the outer circumference so that the working fluid can be accommodated in the second chamber. An accommodation groove(61), a third chamber(63), and a second spring are formed in the plunger.
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