| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a stable output characteristic. SOLUTION: In a pump device 1 wherein a hydraulic liquid in a reservoir 2 is pre-loaded, and which is provided with a delivery port 14 connected to an actuator 3, a pump part 1a wherein a piston 9 is housed in a housing 6, a piston driving part 1b for delivering and intaking a fluid from/to the pump part 1a by performing reciprocating motion of the piston 9 to the housing 6, and the reservoir 2 for reserving the fluid as well as connecting to the suction port 13 of the pump part 1a, the hydraulic liquid in the reservoir 2 is pre-loaded by air pressure.</p> |
