Title:
液圧ポンプ
Document Type and Number:
Japanese Patent JP7082481
Kind Code:
B2
Abstract:
To provide a hydraulic pump capable of reducing flowing resistance of liquid and properly sucking and discharging the liquid without arranging springs of a suction check valve and a discharge check valve in a flow channel in which liquid flows from a suction flow channel to a discharge flow channel through a pump chamber.SOLUTION: In a suction check valve 26, a suction valve element 26A is disposed on a suction connection portion 25A, and a first spring is arranged at an outer part of the suction connection portion 25A at the back of the suction valve element 26A. In a discharge check valve 28, a discharge valve element 28A is disposed on a discharge connection portion 27A, and a second spring 28B is disposed at an outer part of the discharge connection portion 27A at the back of the discharge valve element 28A. Since the first spring and the second spring 28B are thus not disposed in a flow channel in which a hydraulic fluid flows from the suction flow channel to the discharge flow channel 29 through a pump chamber 23, flowing resistance of the hydraulic fluid caused by arrangement of the first spring and the second spring 28B in the flow channel can be reduced, and the liquid can be properly sucked and discharged.SELECTED DRAWING: Figure 1
Inventors:
Nobuhisa Watanabe
Application Number:
JP2017242267A
Publication Date:
June 08, 2022
Filing Date:
December 19, 2017
Export Citation:
Assignee:
Hokko Industry Co., Ltd.
International Classes:
F04B17/04; F04B53/10
Domestic Patent References:
| JP3001279U | ||||
| JP8128548A |