JPS63184182U

JPS63184182U -

Info

Publication number: JPS63184182U
Application number: JP1987075639U
Authority: JP
Priority date: 1987-05-20
Filing date: 1987-05-20
Publication date: 1988-11-28
Anticipated expiration: 2002-05-20
Also published as: JPH0645419Y2

Description

[Brief explanation of the drawing]

第１図乃至第３図はこの考案の一実施例を示す
もので、第１図は流量制御バルブの概略構成図、
第２図は流量制御バルブの縦断面図、第３図はオ
イルポンプから制御バルブに供給される作動油の
流量特性を示す特性図、第４図は後輪操舵装置全
体の概略構成図である。１……前輪、２……後輪、２４……油圧アクチ
ユエータ、２６……オイルポンプ、３２……油圧
回路、３３……制御バルブ、５１……流量制御バ
ルブ、６０……スパイラルチヨーク（長い絞り通
路）。 Figures 1 to 3 show an embodiment of this invention, and Figure 1 is a schematic diagram of the flow control valve;
Figure 2 is a longitudinal sectional view of the flow control valve, Figure 3 is a characteristic diagram showing the flow rate characteristics of hydraulic oil supplied from the oil pump to the control valve, and Figure 4 is a schematic configuration diagram of the entire rear wheel steering system. . 1...Front wheel, 2...Rear wheel, 24...Hydraulic actuator, 26...Oil pump, 32...Hydraulic circuit, 33...Control valve, 51...Flow control valve, 60...Spiral chain yoke (long aperture passage).

補正昭６３．１．１１考案の名称を次のように補正する。考案の名称油圧装置の流量制御機構実用新案登録請求の範囲、図面の簡単な説明を
次のように補正する。Amendment January 11, 1981 The name of the invention is amended as follows. Title of the invention: Flow rate control mechanism for a hydraulic system The scope of the utility model registration claims and the brief description of the drawings are amended as follows.

【実用新案登録請求の範囲】作動油の流量を制御する流量制御バルブを備え
、この流量制御バルブは流入する作動油の一部を
戻す戻し通路の開閉を制御するバルブ本体を有し
、このバルブ本体は前記流量制御バルブの作動油
流出側に設けられた流路面積を絞る長い絞り通路
の上流側と下流側との間の差圧の上昇に応じて上
記戻し通路を開くよう設けられていることを特徴
とする油圧装置の流量制御機構。[Claims for Utility Model Registration] A flow rate control valve that controls the flow rate of hydraulic oil, the flow control valve having a valve body that controls the opening and closing of a return passage that returns a portion of the inflowing hydraulic oil; The main body is provided to open the return passage in response to an increase in the differential pressure between the upstream side and the downstream side of a long throttle passage that restricts the flow path area provided on the hydraulic oil outflow side of the flow control valve. A flow control mechanism for a hydraulic device characterized by:

【図面の簡単な説明】第１図乃至第３図はこの考案の一実施例を示す
もので、第１図は流量制御バルブの概略構成図、
第２図は流量制御バルブの縦断面図、第３図は流
量制御バルブの油温に対する流量特性を示す特性
図、第４図は本考案が適用される油圧装置の一例
を示す後輪操舵装置全体の概略構成図である。５１……流量制御バルブ、５４……油戻しポー
ト（戻し通路）、５６……バルブ本体、６０……
スパイラルチヨーク（長い絞り通路）。[Brief Description of the Drawings] Figures 1 to 3 show an embodiment of this invention, and Figure 1 is a schematic diagram of the flow control valve;
Fig. 2 is a longitudinal sectional view of the flow control valve, Fig. 3 is a characteristic diagram showing the flow characteristics of the flow control valve with respect to oil temperature, and Fig. 4 is a rear wheel steering system showing an example of a hydraulic system to which the present invention is applied. It is a schematic block diagram of the whole. 51...Flow rate control valve, 54...Oil return port (return passage), 56...Valve body, 60...
Spiral arch yoke (long aperture passage).

Claims

[Scope of utility model registration request]

An oil pump for steering the rear wheels and a hydraulic actuator for steering the rear wheels driven by hydraulic pressure supplied from the oil pump are respectively installed, and a hydraulic actuator is connected from the oil pump to the hydraulic actuator in accordance with the steering of the front wheels. In a rear wheel steering device equipped with a control valve that controls the supply of hydraulic pressure, a flow control valve that controls the flow rate of hydraulic oil supplied from the oil pump side to the control valve side is provided, and the operation of the flow control valve is provided. A rear wheel steering device characterized by having a long throttle passage arranged on the oil spill side to narrow the flow passage area.