| 摘要 |
<p>PROBLEM TO BE SOLVED: To miniaturize a valve element, so that piping can be omitted of a pressure introducing pipe connecting a solenoid valve and a four-way valve, by bringing a part of a pilot valve in the four-way valve of the pilot solenoid valve used in the conventional four-way valve. SOLUTION: In a solenoid four-way valve, case 4, a part of a pilot valve of a pilot solenoid valve, conventionally manufactured as a separate unit in a resin-made inner case 4, is formed, also by two sheets of blade-shaped partitioning plates 12, 13 integrally formed with a rotatable valve element 2, a high pressure chamber 27 and two pressure chambers 28, 29 guiding a low or high pressure are formed, and in the inner case 4, a high pressure introducing hole 33, two pressure introducing holes 35, 36 and a low pressure introducing hole 34 for operating a piston by a pressure difference are formed.</p> |
