JPH0421777U

JPH0421777U -

Info

Publication number: JPH0421777U
Application number: JP6271690U
Authority: JP
Priority date: 1990-06-15
Filing date: 1990-06-15
Publication date: 1992-02-24

Description

[Brief explanation of the drawing]

第１図は、この考案の一実施例の要部を示す断
面図、そして、第２図は、液圧上昇の特性を示す
図である。１１……本体、１２……シリンダ孔、４０……
プランジヤ、４２……圧力室、４３……カム、４
７……入口弁、５０……逆止弁、６０……ケーシ
ング、７０……弾性部材。 FIG. 1 is a sectional view showing a main part of an embodiment of this invention, and FIG. 2 is a diagram showing characteristics of hydraulic pressure increase. 11...Main body, 12...Cylinder hole, 40...
Plunger, 42...pressure chamber, 43...cam, 4
7... Inlet valve, 50... Check valve, 60... Casing, 70... Elastic member.

Claims

[Claims for Utility Model Registration] 1. A main body having a cylinder hole with one end closed;
A plunger that is movably fitted into a cylinder hole of the main body to partition a pressure chamber, a drive mechanism that moves the plunger from a non-operating position toward the pressure chamber, and a side opposite to the closed end side of the cylinder hole. an inlet passage provided in the cylinder hole that communicates the cylinder hole with a hydraulic fluid reservoir; an inlet valve that blocks communication between the inlet passage and the pressure chamber when the plunger moves a predetermined amount from a non-operating position; and an inlet valve that blocks communication between the inlet passage and the pressure chamber; a check valve disposed between the closed end of the cylinder and the pressure chamber; an outlet passage connecting the pressure chamber to a consumption circuit through the check valve; A hydraulic pump device comprising a casing that receives hydraulic pressure from the casing and supports the check valve inside the casing, the end of the casing on the pressure chamber side facing the closed end of the cylinder hole. A hydraulic pump device, wherein the casing is supported by a stepped portion, and the opposite end of the casing is supported by the closed end of the cylinder hole with an elastic member in between. 2. The spring constant of the elastic member according to claim 1, wherein the spring constant of the elastic member is set to a value that allows the elastic member to be deformed by the force received from the casing after the inlet valve closes and before the check valve opens. Hydraulic pump equipment.