JPS59182465U

JPS59182465U - Power steering device flow control valve

Info

Publication number: JPS59182465U
Application number: JP7801983U
Authority: JP
Inventors: 幸司鈴木
Original assignee: 日産自動車株式会社
Priority date: 1983-05-24
Filing date: 1983-05-24
Publication date: 1984-12-05

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図および第２図は従来のパワーステアリング装置の
流量制御弁を示す図であり、第１図はポンプおよびリザ
ーバとともに示す断面図、第２−は要部を模式的に示す
図である。第３図から第５図はこの考ｉの一実施例にか
かるパワーステアリング装置の流量制御弁を示す図であ
り、第３図は断面図、第４図ａは要部を模式的に示す図
、第４図すは第４図ａのＡ矢視図、第５図は要部を模式
的に示して作用を示す図である。第６図ａ、　　ｂはこ
の考案の他の実施例にかかるパワーステアリング装置の
流量制御弁を示す図であり、第６図ａは要部を模式的に
示す図、第６図すは第６図ａの■−■線断面図である。第７図は作動流体温度と作動流体流量との関係を従来と
の比較において示す図である。２１・・・・・・流量制御弁、２２・・・・・・定量ポ
ンプ、２３・・・・・・パワーステアリングギアアッセ
ンブリ、２７・・・・・・インレットポート、２８・・
・・・・アウトレットポート、２９・・・・・・ドレン
ポート、３０・・・・・・バルブボディ、３１・・・・
・・スプール、３５・・・・・・メインオリフィス、４
７・・・・・・サブオリフィス、４８・・・・・・オリ
フィス面積変更器、５１・・・・・・変更体、５３・・
・・・・先端部、５６・・・・・・液室、５７・・・・
・・後端部、６５・・・・・・変位規制機構、Ｗ・・・
・・・ワックス（熱感応性部材）。1 and 2 are diagrams showing a flow control valve of a conventional power steering device. FIG. 1 is a sectional view showing a pump and a reservoir together, and FIG. 2 is a diagram schematically showing important parts. 3 to 5 are diagrams showing a flow control valve of a power steering device according to an embodiment of this idea, in which FIG. 3 is a cross-sectional view, and FIG. 4a is a diagram schematically showing main parts. , FIG. 4 is a view taken in the direction of arrow A in FIG. 4a, and FIG. 5 is a diagram schematically showing the main parts and illustrating the operation. 6a and 6b are diagrams showing a flow control valve of a power steering device according to another embodiment of the invention, FIG. 6a is a diagram schematically showing the main part, and FIG. It is a sectional view taken along the line ■-■ in Figure a. FIG. 7 is a diagram showing the relationship between the working fluid temperature and the working fluid flow rate in comparison with the conventional method. 21... Flow rate control valve, 22... Metering pump, 23... Power steering gear assembly, 27... Inlet port, 28...
...Outlet port, 29...Drain port, 30...Valve body, 31...
... Spool, 35 ... Main orifice, 4
7... Sub-orifice, 48... Orifice area changer, 51... Change body, 53...
...Tip, 56...Liquid chamber, 57...
... Rear end, 65... Displacement regulation mechanism, W...
...Wax (heat-sensitive material).

Claims

[Scope of utility model registration request]

Inside the valve body, an inlet port is connected to the pump and the working fluid flows in, an outlet port is connected to the power steering gear assembly and the working fluid flows out, and a drain port is connected to the reservoir and the working fluid is discharged. , a spool responsive to a fluid pressure difference between the inlet port and the outlet port is housed, and the spool changes an opening area of a main orifice interposed between the inlet port and the outlet port by the movement of the spool. At the same time, a sub-orifice is formed between the valve body and the inlet port and the drain port to communicate with each other and change the opening area as the spool moves; In a flow control valve of a power steering device, one end engages with the main orifice and the other end engages with the valve body, and moves relative to the main orifice to control the main orifice. - an orifice area changer that changes the opening area of the chair; and an orifice area changer that is interposed between the orifice area changer and the valve body and increases or decreases the volume in response to the temperature of the working fluid, and displaces the orifice area changer. a displacement regulating mechanism that prohibits relative displacement of the orifice area changing body beyond a predetermined value with respect to the main orifice and ensures a minimum opening area of the main orifice;
A flow control valve for a power steering device, characterized in that it is provided with.