| 摘要 |
<p>PURPOSE:To prevent the generation of pulsation of oil pressure by driving a piston part different from a spool and transmitting a controlling hydraulic pressure onto the spool through a spring. CONSTITUTION:When a solenoid valve 3 is closed, the oil pressure in an oil pressure source is introduced into a cylinder chamber 1e through an orifice 16, and a piston 3 is urged leftward. Then, the first spring 4 is compressed, and a spool 2 is urged leftward. Therefore, the oil in the oil pressure source is supplied into a pressure adjusting chamber 1b through an orifice 15 and an inflow hole 1f. Therefore, the oil pressure on the pressure adjusting chamber 1b and the effluence hole 1g sides increases, and the pressurized oil flows into an auxiliary pressure adjusting chamber 2a through a communication passage 2b, and the spool 2 is urged rightward by the action of the pressurized oil, and the urging force of the piston 3 and the urging force of the spool 2 are balanced, and a constant oil pressure is maintained in the pressure adjusting chamber 1b.</p> |
