| 摘要 |
PROBLEM TO BE SOLVED: To achieve a hydraulic device that can take in liquid leaked from a hydraulic pump without receiving a restriction on the amount and, secures a degree of freedom about a design change such as: specification change of the atmospheric pressure reservoir that does incorporation; change of an installation point: and layout change of a lead road.SOLUTION: A pump device includes: a pump housing 1 with a built-in hydraulic pump 2; an atmospheric pressure reservoir 8 that retains liquid in an atmospheric pressure; a rotary shaft 3 for the pump drive; and a leaked liquid inflow chamber 4 provided internally of the pump housing 1. The atmospheric pressure reservoir 8 is disposed under the pump housing 1, and the liquid that entered in entered in the leaked liquid inflow chamber 4 flows in the atmospheric pressure reservoir 8 by the gravity through a connection passage 9. |
