JPS5885758A - Rack and pinion type power steering device - Google Patents

Rack and pinion type power steering device

Info

Publication number
JPS5885758A
JPS5885758A JP18349781A JP18349781A JPS5885758A JP S5885758 A JPS5885758 A JP S5885758A JP 18349781 A JP18349781 A JP 18349781A JP 18349781 A JP18349781 A JP 18349781A JP S5885758 A JPS5885758 A JP S5885758A
Authority
JP
Japan
Prior art keywords
housing
valve
valve housing
shaft
pinion shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP18349781A
Other languages
Japanese (ja)
Other versions
JPH0124115B2 (en
Inventor
Keikichi Miyauchi
宮内 啓吉
Toshihiro Goto
後藤 俊広
Kenji Takahashi
憲二 高橋
Toshio Hirokawa
廣川 利夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyoda Koki KK
Original Assignee
Toyoda Koki KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyoda Koki KK filed Critical Toyoda Koki KK
Priority to JP18349781A priority Critical patent/JPS5885758A/en
Publication of JPS5885758A publication Critical patent/JPS5885758A/en
Publication of JPH0124115B2 publication Critical patent/JPH0124115B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D5/00Power-assisted or power-driven steering
    • B62D5/06Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/20Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application
    • B62D5/22Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application for rack-and-pinion type

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Steering Mechanism (AREA)

Abstract

PURPOSE:To facilitate inspection and maintenance by making it possiblt to check the sealing function of a sealing section that prevents leakage of pressure fluid into the gear housing in a valve housing before the valve housing is fit in the gear housing. CONSTITUTION:The steering device stated in the headline reduces steering power by supplying the pressure fluid which flows into a valve housing 12 from a supply port 12a, to one fluid chamber of a power cylinder from a distribution port not illustrated when a steering shaft 32 is revolved during steering and a rotor valve member 21 is slightly revolved relatively to a sleeve valve member 22. In this case, one end of a pinion shaft 31 is liquid-tightly mounted rotatably on the same hosing 12 through a ball bearing 13 that is fitted in the inside of the mounting side opening section of the housing 12 and a sealing member 14. Besides, the mounting side opening section of the gear housing 11 forms a cylindrical engagement recess 11a that can be engaged in the cylindrical projection section 12c of the valve housing 12.

Description

【発明の詳細な説明】 本発明はラックピニオン式動力舵取装置に関し、詳シく
は、ギヤハウジングにバルブハウジングを液密的に組付
けて形成したハウジングの内部に操舵軸の回転により相
対変位する一対の弁部材を収容してなり、かつ前記ハウ
シングの内部にラック軸に噛合するピニオン軸の一端を
液密的かつ回転可能に軸支して収容してなり、前記両弁
部材の相対変位により前記バルブハウジング内を流通す
る圧力流体のパワーシリンダに対する給排を制御して、
前記操舵軸の操作力を軽減するようにしたラックピニオ
ン式動力舵取装置に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rack and pinion type power steering device, and more specifically, the present invention relates to a rack and pinion type power steering device, and more specifically, a gear housing and a valve housing are assembled in a liquid-tight manner. one end of a pinion shaft that meshes with the rack shaft is rotatably and liquid-tightly supported within the housing, and the relative displacement of the two valve members is controlling the supply and discharge of pressure fluid flowing through the valve housing to and from the power cylinder,
The present invention relates to a rack and pinion power steering device that reduces the operating force of the steering shaft.

一般に、この種動力舵取装置においては、ギヤハウジン
グに装着した一対の軸受を介してピニオン軸の両端がギ
ヤハウジングに回転可能に軸支され、かつギヤハウジン
グの開口部に装着したシール部材によりシールされてい
て、このピニオン軸に操舵軸および両弁部材を連結した
状態にてバルブハウジングがギヤハウジングに組付けら
れている。このため、パルプハウジング内の圧力流体の
ギヤハウジング内への漏洩を防止するシール部材のシー
ル機能は、バルブハウジングをギヤハウジングに組付け
た状態でしかチェックすることができず、しかもバルブ
ハウジング内からのギヤハウジング内への圧力流体の漏
洩は外部から目視することができないため、シール部材
自体の不良、シール部材および/またはピニオン軸の組
付不良に起因する圧力流体の漏洩をチェックすることは
困難であった。
Generally, in this type of power steering device, both ends of the pinion shaft are rotatably supported by the gear housing via a pair of bearings installed in the gear housing, and are sealed by a sealing member installed in the opening of the gear housing. The valve housing is assembled to the gear housing with the steering shaft and both valve members connected to the pinion shaft. For this reason, the sealing function of the sealing member that prevents the leakage of pressure fluid in the pulp housing into the gear housing can only be checked when the valve housing is assembled to the gear housing. Since leakage of pressure fluid into the gear housing cannot be visually observed from the outside, it is difficult to check for leakage of pressure fluid caused by a defect in the sealing member itself, incorrect assembly of the sealing member and/or pinion shaft. Met.

本発明は、この種動力舵取装置におけるこのような問題
に着目してなされたもので、その主たる目的は、パルプ
ハウジング内のギヤハウジング内への圧力流体の漏洩を
阻止するシール部材のシール機能をギヤハウジングにバ
ルブハウジングを組付ける前にチェックでき、かつこの
圧力流体の漏洩を外部から目視できるようにすることに
ある。
The present invention was made by focusing on such problems in this type of power steering device, and its main purpose is to improve the sealing function of the sealing member that prevents pressure fluid from leaking into the gear housing in the pulp housing. The purpose of the present invention is to enable checking before assembling a valve housing to a gear housing, and to visually check leakage of pressure fluid from the outside.

以下、本発明を図面に基づいて説明するに、第1図には
本発明に係るラックピニオン式動力舵取装置の一例が示
されている。この動力舵取装置はこの動力舵取装置にお
いては、ギヤハウジング11にバルブハウジング12を
液密的に組付けて形成してなるハウジングの内部に、制
御弁機構20とピニオン軸61゛が収容されている。
Hereinafter, the present invention will be explained based on the drawings. FIG. 1 shows an example of a rack and pinion type power steering device according to the present invention. In this power steering device, a control valve mechanism 20 and a pinion shaft 61' are housed inside a housing formed by assembling a gear housing 11 and a valve housing 12 in a liquid-tight manner. ing.

制御弁機構20は、操舵軸32に一体的に形成されたロ
ータ弁部材21と、ロータ弁部材21の外周に同心的か
つ相対回転可能に嵌合されたスリーブ弁部材22を主要
構成部材としていて、ロータ弁部材21の外周およびス
リーブ弁部材22の内周には、等間隔にて軸方向へ延び
る複数の公知のランド部とこれに対向する溝部がそれぞ
れ形成されている。このロータ弁部材21は、これと一
体の操舵軸62に一端を固定しがっ他端をピニオン軸3
1に固定したトーションバー36にょリヒニオン軸31
に連結されており、またスリーブ弁部材22は連結ビン
23によりピニオン軸ろ1に連結されている。一方、ピ
ニオン軸31は上記したように操舵軸32および両弁部
材21.22に連結しているとともに、ギヤハウジング
11内のラック軸34の一部に噛合している。なお、ラ
ック軸64は図示しないパワーシリンダ内を摺動するピ
ストンを備えていて、このパワーシリンダおよびギヤハ
ウジング11内を挿通されてその両端が操縦リンク機構
を介して操行車輪に連結されている。
The control valve mechanism 20 has a rotor valve member 21 integrally formed with a steering shaft 32, and a sleeve valve member 22 fitted to the outer periphery of the rotor valve member 21 concentrically and rotatably relative to each other. A plurality of well-known land portions extending in the axial direction at equal intervals and groove portions opposing the land portions are formed on the outer periphery of the rotor valve member 21 and the inner periphery of the sleeve valve member 22, respectively. This rotor valve member 21 has one end fixed to a steering shaft 62 integrated therewith, and the other end fixed to a pinion shaft 62.
Torsion bar 36 fixed to 1, rotation shaft 31
The sleeve valve member 22 is also connected to the pinion shaft filter 1 by a connecting pin 23. On the other hand, the pinion shaft 31 is connected to the steering shaft 32 and both valve members 21, 22 as described above, and also meshes with a part of the rack shaft 34 inside the gear housing 11. The rack shaft 64 includes a piston that slides inside a power cylinder (not shown), and is inserted through the power cylinder and the gear housing 11, and both ends thereof are connected to steering wheels via a steering link mechanism.

この動力舵取装置においては、第1図および第2図に示
すように、中立時流体ポンプ41から第1配管422お
よび供給ボー)12aを通してバルブハウジング12内
に流入される圧力流体が排出ボート12bおよび第2配
管42bを通してリザーバ43へ還流され、また操舵時
には操舵軸62の回転によりロータ弁部材21がスリー
ブ弁部材22に対してわずかに相対回転して、バルブハ
ウジング12内に流入される圧力流体がバルブハウジン
グ120図示しない一方の分配ボートおよび第3配管4
2tを通して図示しないパワーシリンダの一方の流体室
内へ供給され、同時にパワーシリンダの他方の流体室内
の圧力流体が第4配管42d1他方の分配ボート、排出
ボート12bおよび第2配管42bを通してリザーバ4
3へ還流される。これにより、操舵時における操舵軸6
2の操作力が軽減される。
In this power steering system, as shown in FIG. 1 and FIG. Pressure fluid is returned to the reservoir 43 through the second pipe 42b, and during steering, the rotor valve member 21 slightly rotates relative to the sleeve valve member 22 due to the rotation of the steering shaft 62, and the pressure fluid flows into the valve housing 12. The valve housing 120 is connected to one distribution boat (not shown) and the third pipe 4.
2t into one fluid chamber of the power cylinder (not shown), and at the same time, the pressure fluid in the other fluid chamber of the power cylinder is supplied to the reservoir 4 through the fourth pipe 42d1, the other distribution boat, the discharge boat 12b, and the second pipe 42b.
It is refluxed to 3. As a result, the steering shaft 6 during steering
2. The operating force required is reduced.

しかして、ピニオン軸61の一端は、バルブハウジング
12の取付側開口部の内側に組付けたボールベアリング
16とシール部材14を介してバルブハウジング12に
液密的かつ回転可能に軸支され、またピニオン軸61の
他端はギヤハウジング11の底部に組付けたニードルベ
アリング15を介してギヤハウジング11に回転可能に
軸支されている。
Thus, one end of the pinion shaft 61 is fluid-tightly and rotatably supported by the valve housing 12 via the ball bearing 16 assembled inside the installation side opening of the valve housing 12 and the seal member 14. The other end of the pinion shaft 61 is rotatably supported by the gear housing 11 via a needle bearing 15 assembled to the bottom of the gear housing 11.

ギヤハウジング11の取付側開口部は円柱状の嵌合凹所
11aに形成されており、またバルブハウジング12の
取付側開口部には、ギヤハウジング11の嵌合凹所11
aに嵌合可能な筒状突起部1?が形成されている。ボー
ルベアリング13は、筒状突起部1?の内孔内に嵌合さ
れてその底部に位置し、ピニオン軸31の一端部上にカ
シメ止めされたリング状の締付部材16と後述するプラ
グ17により固定されている。一方、シール部材14は
ピニオン軸21の外周に密接するリング状を呈していて
、筒状突起部1?の開口端部に液密的に螺着されるプラ
グ17の内孔内に支持されている。このシール部材14
は、プラグ17を筒状突起部12Cの開口端部に螺着す
ることにより、その内側に組付けられている。これによ
り、ボールベアリング16において社、締付部材16に
よりインナレースのガタが除かれかつプラグ17により
アウタレースのガタが除かれた状態にて筒状突起部1?
の内側に組付けられ、シール部材14とともにピニオン
軸31の一端を液密的かつ回転可能に軸支している。
The opening on the mounting side of the gear housing 11 is formed in a cylindrical fitting recess 11a, and the opening on the mounting side of the valve housing 12 is formed in the fitting recess 11 of the gear housing 11.
Cylindrical protrusion 1 that can fit into a? is formed. Ball bearing 13 is cylindrical protrusion 1? It is fitted into the inner hole of the pinion shaft 31 and is located at the bottom thereof, and is fixed by a ring-shaped tightening member 16 caulked onto one end of the pinion shaft 31 and a plug 17 to be described later. On the other hand, the seal member 14 has a ring shape that closely fits around the outer periphery of the pinion shaft 21, and has a cylindrical protrusion 1? The plug 17 is supported within the bore of a plug 17 which is screwed fluid-tightly into the open end of the plug 17. This seal member 14
is assembled inside the cylindrical protrusion 12C by screwing the plug 17 onto the open end of the cylindrical protrusion 12C. As a result, in the ball bearing 16, the tightening member 16 removes the play in the inner race, and the plug 17 removes the play in the outer race.
The pinion shaft 31 and the seal member 14 support one end of the pinion shaft 31 in a fluid-tight and rotatable manner.

かかる動力舵取装置においては、次の手順で組付けられ
る。すなわち、ボールベアリング15をピニオン軸31
の外周に嵌合させて締付部材16によりインナレースを
固定し、ピニオン軸31と操舵軸32をトーションバー
63により連結するとともに、操舵軸62と一体のロー
タ弁部材21め外周に嵌合したスリーブ弁部材22とピ
ニオン軸31を連結ピン23により連結して、シール部
材18およびニードルベアリング19等を介してバルブ
ハウジング12内に挿入し、かつボールベアリング16
をピニオン軸61の他端側からバルブハウジング120
筒状突起部1?内に嵌合させる。次いで、シール部材1
4と一体のプラグ17をピニオン軸61の他端側からバ
ルブハウジング12の筒状突起部12Cの開口端部に液
密的に螺着し、ボールベアリング16のアウタレースを
固定する。これにより形成された組付体(以下バルブ組
付体という)I′i、第1図の左方部および第2図に示
すように、両弁部材21.22がバルブハウジング12
内の所定の位置に収容され、また操舵軸32がバルブハ
ウジング12に液密的かつ回転可能に軸支されてバルブ
ハウジング12内から延出し、かつピニオン軸31がバ
ルブハウジング12の筒状突起部1?内に液密的かつ回
転可能に軸支されてバルブハウジング12内から延出し
ている。最後に、このバルブ組付体におけるバルブハウ
ジング12の筒状突起部12cをギヤハウジング11の
嵌合凹所11a内に液密的に嵌合して、バルブ組付体を
両ハウジング11.12の接合端面にて複数のボルトに
よりギヤハウジング11に組付ける。
Such a power steering device is assembled in the following steps. That is, the ball bearing 15 is connected to the pinion shaft 31.
The inner race is fixed by the tightening member 16, and the pinion shaft 31 and the steering shaft 32 are connected by a torsion bar 63, and the rotor valve member 21, which is integrated with the steering shaft 62, is fitted onto the outer periphery of the rotor valve member 21. The sleeve valve member 22 and the pinion shaft 31 are connected by a connecting pin 23 and inserted into the valve housing 12 via the seal member 18, needle bearing 19, etc., and the ball bearing 16
from the other end of the pinion shaft 61 to the valve housing 120
Cylindrical protrusion 1? Fit inside. Next, seal member 1
4 is screwed into the open end of the cylindrical protrusion 12C of the valve housing 12 from the other end of the pinion shaft 61 in a liquid-tight manner to fix the outer race of the ball bearing 16. As shown in the left part of FIG. 1 and FIG.
The steering shaft 32 is fluid-tightly and rotatably supported by the valve housing 12 and extends from the inside of the valve housing 12, and the pinion shaft 31 is accommodated in a cylindrical protrusion of the valve housing 12. 1? The valve housing 12 is fluid-tightly and rotatably supported within the valve housing 12 and extends from the valve housing 12 . Finally, the cylindrical protrusion 12c of the valve housing 12 in this valve assembly is fitted into the fitting recess 11a of the gear housing 11 in a fluid-tight manner, and the valve assembly is attached to both housings 11.12. It is assembled to the gear housing 11 with a plurality of bolts at the joint end surface.

このように構成した動力舵取装置においては、第2図に
示すように、バルブ組付体の状態でバルブハウジング1
2内の圧力流体の漏洩をチェックすることができる。第
2図において、符号Aは動力舵取装置のパワーシリンダ
に対応するアクチュエータであって、このアクチュエー
タムの一方の流体室R工にはバルブハウジングの一方の
分配ポートに接続した第6配管42tが接続され、また
アクチュエータAの他方の流体室R2にはバルブハウジ
ングの他方の分配ポートに接続した第4配管42dが接
続される。これにより、バルブ組付体の内部に、動力舵
取装置の中立時および操舵時における圧力流体の流れと
全く同じ流れビ生じさせることができて、バルブハウジ
ング12内から圧力流体の漏洩°をギヤハウジング11
に組付ける前にチェックすることができ、また圧力流体
の漏洩を外部から目視しえてシール部材14自体の不良
、シール部材14および/またはピニオン軸ろ1の組付
不良を容易にチェックすることができる。
In the power steering system configured in this way, as shown in FIG.
Leakage of pressure fluid within 2 can be checked. In FIG. 2, symbol A is an actuator corresponding to the power cylinder of the power steering device, and one fluid chamber R of this actuator has a sixth pipe 42t connected to one distribution port of the valve housing. Further, the other fluid chamber R2 of the actuator A is connected to a fourth pipe 42d connected to the other distribution port of the valve housing. As a result, it is possible to create a flow inside the valve assembly that is exactly the same as the flow of pressure fluid when the power steering device is in neutral and during steering, and to prevent leakage of pressure fluid from inside the valve housing 12. Housing 11
In addition, leakage of pressure fluid can be visually observed from the outside to easily check for defects in the seal member 14 itself, and defects in the assembly of the seal member 14 and/or the pinion shaft filter 1. can.

なお、本実施例においては、ピニオく軸61の一端を回
転可能に軸支する軸受にボールベアリング16を用い、
このボールベアリング16をプラグ17によりバルブハ
ウジング12の筒状突起部12C内に組付けた例につい
て示したが、本発明においてはボールベアリング1z、
に換えて適宜の軸受を用いて、この軸受を適宜の組付手
段にてバルブハウジングの組付側開口部の内側に組付け
てもよい。また、シール部材14の組付手段についても
同様で、プラグ17に換えて適宜の組付手段を用いるこ
とができる。
In this embodiment, a ball bearing 16 is used as a bearing that rotatably supports one end of the pinion shaft 61.
Although an example has been shown in which this ball bearing 16 is assembled into the cylindrical protrusion 12C of the valve housing 12 using the plug 17, in the present invention, the ball bearing 1z,
Instead, an appropriate bearing may be used and this bearing may be assembled inside the assembly side opening of the valve housing by an appropriate assembly means. Further, the same applies to the assembling means of the seal member 14, and an appropriate assembling means can be used in place of the plug 17.

さらに、本実施例においては、制御弁機構としてロータ
弁部材21およびスリーブ弁部材22を主要構成部材と
し、両弁部材21.22の相対同転により圧力流体を制
御するロータリ式制御弁機構を備えた動力舵取装置の例
について示したが、本発明はスプール弁部材およびスリ
ーブ弁部材を主要構成部材とし、両弁部材の軸方向への
相対変位により圧力流体を制御するスプール式制御弁機
構を備えた動力舵取装置にも実施できる。
Further, in this embodiment, a rotary type control valve mechanism is provided as a control valve mechanism, which uses a rotor valve member 21 and a sleeve valve member 22 as main components, and controls pressure fluid by relative simultaneous rotation of both valve members 21 and 22. Although an example of a power steering device has been shown, the present invention has a spool type control valve mechanism that uses a spool valve member and a sleeve valve member as main components and controls pressure fluid by relative displacement of both valve members in the axial direction. It can also be implemented on a power steering device equipped with a power steering system.

要するに、本発明は、ギヤハウジングにバルブハウジン
グを液密的に組付けて形成したハウジングの内部に操舵
軸の回転により相対変位する一対の弁部材を収容してな
り、かつ前記ハウジングの内部にラック軸に噛合するピ
ニオン軸の一端を液密的かつ回転可能に軸支して収容し
てなり、前記両弁部材の相対変位により前記バルブハウ
ジング内を流通する圧力流体のパワーシリンダに対する
給排を制御して、前記操舵軸の操作力を軽減するように
した各種形式のラックピニオン式動力舵取装置に実施し
うる。
In short, the present invention has a housing that is formed by assembling a valve housing to a gear housing in a liquid-tight manner, and houses a pair of valve members that are relatively displaced by rotation of a steering shaft, and has a rack mounted inside the housing. One end of a pinion shaft that meshes with the shaft is supported and accommodated in a fluid-tight and rotatable manner, and relative displacement of both valve members controls the supply and discharge of pressurized fluid flowing within the valve housing to and from the power cylinder. Accordingly, the present invention can be implemented in various types of rack and pinion type power steering devices that reduce the operating force of the steering shaft.

以上説明したように、本発明は上記した各種形式のラッ
クピニオン式動力舵取装置において、前記バルブハウジ
ングの組付側開口部の内側に、前記ピニオン軸の一端全
軸支する軸受と前記ピニオン軸の外周に密接するシール
部材を組付けて、前記ピニオン軸の一端を前記軸受およ
びシール部材ヲ介して前記バルブハウジングに軸支した
状態にて、このバルブハウジングを前記ギヤハウジング
に組付けたことにその構成上の特徴がある。従って、本
発明によれば、バルブハウジングをギャノ・ウジングに
組付ける前のバルブ組付体の状態でバルブハウジング内
からの圧力流体の漏洩をチェックすることができ、また
圧力流体の漏洩を外部から目視しえてシール部材自体の
不良、シール部材および/またはピニオン軸の組付不良
を容易にチェックすることができる。
As explained above, in the various types of rack and pinion power steering devices described above, the present invention provides a bearing that fully supports one end of the pinion shaft inside the assembly side opening of the valve housing; A sealing member that is in close contact with the outer periphery of the valve housing is assembled to the gear housing with one end of the pinion shaft being pivotally supported by the valve housing via the bearing and the sealing member. There is a characteristic of its composition. Therefore, according to the present invention, leakage of pressure fluid from inside the valve housing can be checked in the state of the valve assembly before the valve housing is assembled to the Gano-Using, and leakage of pressure fluid can be checked from the outside. It is possible to visually check for defects in the seal member itself and for defects in the assembly of the seal member and/or the pinion shaft.

【図面の簡単な説明】 第1図は本発明に係る動力舵取装置の一例を示す縦断面
図、第2図は圧力流体の漏洩のチェック状態を示すバル
ブ組付体の一部破断側面図である。 符  号  の  説  明 11・・・・ギヤハウジング、11a・・・・嵌合凹所
、12・・・・バルブハウジング、12C・・・・筒状
突起g、13・・・・ボールベアリング、14・・・・
シール部材、16・・・・締付部材、17・・・・プラ
グ、21・・・・ロータ弁部材、22・・・・スリーブ
弁部材、31・・・・ピニオン軸、32・・・・操舵軸
、ろ4・・・・ラック軸、A・・・・アクチュエータ。
[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a longitudinal sectional view showing an example of a power steering device according to the present invention, and Fig. 2 is a partially cutaway side view of a valve assembly showing a state in which leakage of pressure fluid is checked. It is. Explanation of symbols 11...Gear housing, 11a...Fitting recess, 12...Valve housing, 12C...Cylindrical projection g, 13...Ball bearing, 14・・・・・・
Seal member, 16...Tightening member, 17...Plug, 21...Rotor valve member, 22...Sleeve valve member, 31...Pinion shaft, 32... Steering shaft, Ro 4...Rack axis, A...Actuator.

Claims (1)

【特許請求の範囲】[Claims] ギヤハウジングにバルブハウジングを液密的に組付けて
形成したハウジングの内部に操舵軸の回転により相対変
位する一対の弁部材を収容してなり、かつ前記ハウジン
グの内部にラック軸に噛合するピニオン軸の一端を液密
的かつ回転可能に軸支して収容してなり、前記両弁部材
の相対変位により前記バルブハウジング内を流通する圧
力流体のパワーシリンダに対する給排を制御して、前記
操舵軸の操作力を軽減するようにしたラックピニオン式
動力舵取装置において、前記バルブハウジングの組付側
開口部の内側に、前記ピニオン軸の一端を軸支する軸受
と前記ピニオン軸の外周に密接するシール部材を組付け
て、前記ピニオン軸の一端を前記軸受およびシール部材
を介して前記バルブハウジングに軸支した状態にて、こ
のバルブハウジングを前記ギヤハウジングに組付けたこ
とを特徴とするラックピニオン式動力舵取装置。
A pinion shaft that is formed by assembling a valve housing to a gear housing in a liquid-tight manner and houses a pair of valve members that are relatively displaced by rotation of a steering shaft inside the housing, and that meshes with a rack shaft inside the housing. One end of the valve housing is rotatably and pivotally supported in a liquid-tight manner, and the supply and discharge of pressure fluid flowing through the valve housing to and from the power cylinder is controlled by relative displacement of the two valve members, thereby controlling the steering shaft. In the rack and pinion type power steering device, a bearing that pivotally supports one end of the pinion shaft is disposed inside the assembly side opening of the valve housing, and a bearing that is in close contact with the outer periphery of the pinion shaft. A rack pinion characterized in that the valve housing is assembled to the gear housing with a sealing member assembled and one end of the pinion shaft being pivotally supported by the valve housing via the bearing and the sealing member. type power steering device.
JP18349781A 1981-11-16 1981-11-16 Rack and pinion type power steering device Granted JPS5885758A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18349781A JPS5885758A (en) 1981-11-16 1981-11-16 Rack and pinion type power steering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18349781A JPS5885758A (en) 1981-11-16 1981-11-16 Rack and pinion type power steering device

Publications (2)

Publication Number Publication Date
JPS5885758A true JPS5885758A (en) 1983-05-23
JPH0124115B2 JPH0124115B2 (en) 1989-05-10

Family

ID=16136850

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18349781A Granted JPS5885758A (en) 1981-11-16 1981-11-16 Rack and pinion type power steering device

Country Status (1)

Country Link
JP (1) JPS5885758A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6417876U (en) * 1987-07-24 1989-01-30
JPS6417875U (en) * 1987-07-24 1989-01-30
KR100417963B1 (en) * 2001-02-09 2004-02-11 주식회사 만도 Oil seal of power steering device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6417876U (en) * 1987-07-24 1989-01-30
JPS6417875U (en) * 1987-07-24 1989-01-30
KR100417963B1 (en) * 2001-02-09 2004-02-11 주식회사 만도 Oil seal of power steering device

Also Published As

Publication number Publication date
JPH0124115B2 (en) 1989-05-10

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