JPS58167372U

JPS58167372U - flow control valve

Info

Publication number: JPS58167372U
Application number: JP2641483U
Authority: JP
Inventors: 下浦　慶幸; 黒田　朝治
Original assignee: 自動車機器株式会社
Priority date: 1983-02-24
Filing date: 1983-02-24
Publication date: 1983-11-08
Also published as: JPH039562Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す縦断面図、第２図は第
１図と異なる状態を示す主要部の縦断面図、第３図は第
１図、第２図に示した流量制御弁によって得られる特性
曲線図、第４図、第６図、第８図、第１０図、第１２図
はそれぞれ本考案の他の実施例を示す要部の断面図、第
５図は第４図の、第７図は第６図の、第９図は第８図の
、第１１図は第１０図の、および第１３図は第１２図の
流量制御弁によってそれぞれ得られる特性曲線図である
。１：ハウジンク、２：孔、３ニスプールバルブ、８：入
口ポート、９：出口ポート、１０ニオリフイスポート、
１４：バイパスポート、１５：小径部、１５ａ：本体部
分、１５ｂ：環状膨出部分。７０１７１−Fig. 1 is a longitudinal sectional view showing an embodiment of the present invention, Fig. 2 is a longitudinal sectional view of the main part showing a state different from Fig. 1, and Fig. 3 is a longitudinal sectional view showing the flow rate shown in Figs. 1 and 2. Characteristic curve diagrams obtained by the control valve, FIGS. 4, 6, 8, 10, and 12 are sectional views of main parts showing other embodiments of the present invention, and FIG. Characteristic curve diagrams obtained by the flow control valves shown in FIG. 4, FIG. 7 shown in FIG. 6, FIG. 9 shown in FIG. 8, FIG. 11 shown in FIG. 10, and FIG. 13 shown in FIG. 12, respectively. It is. 1: Housing, 2: Hole, 3 Varnish spool valve, 8: Inlet port, 9: Outlet port, 10 Niorifice port,
14: bypass port, 15: small diameter portion, 15a: main body portion, 15b: annular bulge portion. 70 171-

Claims

[Scope of utility model registration request]

An orifice installed in the middle of a flow path that communicates the oil pump's discharge port with the hydraulic equipment is activated according to the hydraulic pressure difference, and an amount of oil corresponding to the amount of operation is transferred from the flow path to the suction hole of the fifth oil pump. In the flow control valve, the flow path is opened in a hole into which the spool valve is slidably fitted, and the spool valve has an opening of the flow path when the spool valve is operated. a small diameter portion having a diameter slightly smaller than the maximum diameter of the spool valve and a length in the axial direction larger than the diameter of the opening, and a variable orifice is formed from the opening and the small diameter portion. and communicates the upstream side of the orifice and the variable orifice with the high pressure chamber in the hole, and communicates the downstream side of the orifice and the variable orifice with the low pressure chamber in the hole, and furthermore, as the spool valve moves, The small diameter portion is provided with a different diameter portion in which the diameter of the outer peripheral surface is varied along the axial direction in order to vary the gap between the outer peripheral surface and the opening.