| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a hydraulic pump having an efficient solenoid piston by providing a dual floating piston, pressing one piston by a first spring/bearing, limiting a motion stroke by a second axially adjustable spring, and accumulating kinetic energy. SOLUTION: Magnetic force attracts pistons 3 and 6 to each other, and thereby fluids between the two pistons are fed by a poppet valve 17 in an arrow direction 34. A spring 22 presses both pistons in the arrow direction 34 until a flange 15 is brought into contact with the bumper 14 of an O-ring. When electromagnetic force becomes zero, a spring 18 separates the two pistons from each other. Since the spring 22 constantly presses the piston 3 in the flowing direction of the fluids, the flow continues. The piston 6 is accelerated to the right by the spring 18. A wavy spring 10 is compressed to push the pistons in opposing directions, and thus most of the kinetic energy of the piston 6 is stored.</p> |
