JPS6137568Y2 - - Google Patents
Info
- Publication number
- JPS6137568Y2 JPS6137568Y2 JP1977175766U JP17576677U JPS6137568Y2 JP S6137568 Y2 JPS6137568 Y2 JP S6137568Y2 JP 1977175766 U JP1977175766 U JP 1977175766U JP 17576677 U JP17576677 U JP 17576677U JP S6137568 Y2 JPS6137568 Y2 JP S6137568Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve member
- outer valve
- connecting portion
- steering
- 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.)
- Expired
Links
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Description
【考案の詳細な説明】
本考案は車両のハンドルの回転に伴い、２個の
弁部材が相対的に回転し油路を切替えて操舵する
ロータリーバルブ形動力舵取装置に係り、特に弁
構造に係る。[Detailed description of the invention] The present invention relates to a rotary valve type power steering device in which two valve members rotate relative to each other as the steering wheel of a vehicle rotates to switch oil passages for steering. It depends.
従来この種の装置では、第１図に示すラツクピ
ニオン式動力舵取装置に例をとると、内側弁部材
２Ａはハンドル軸（図示せず）に連結したスタブ
シヤフト３Ａにピン４Ａで固定され、ハンドル軸
の回転につれて回転する。外側弁部材１Ａはバル
ブハウジング５Ａの内側円筒面に油密に内嵌し、
かつ一端側大径内面でピニオン軸６Ａの一端にフ
ランジ状に設けた連結部に嵌合している。前記フ
ランジ状連結部にはピン７Ａが植え込まれ、ピン
７Ａは外側弁部材１Ａの端面に設けられた放射方
向の切欠きに円周方向にすきまなく嵌合し、軸方
向にはすきまを有して嵌合する。ピニオン軸６Ａ
はスタブシヤフト３Ａにピン８Ａで固定されたト
ーシヨンバー９Ａにピン１０Ａで固定されてお
り、前記連結部のピン７Ａによつて外側弁部材１
Ａと共に回転する。外側弁部材１Ａのハンドル側
側面にはスラスト軸受１１Ａが接触し、スラスト
軸受１１Ａはバルブハウジング５Ａにねじ込まれ
たリヤカバー１２Ａに保持されており、外側弁部
材１Ａはピニオン軸６Ａとスラスト軸受１１Ａを
介してリアカバー１２Ａに挾持されて軸方向位置
が定められている。図中１３Ａ，１４Ａはピニオ
ン軸６Ａを軸支する針状ころ軸受及び玉軸受、１
５Ａ，１６Ａはスタブジヤフト３Ａを軸支する針
状ころ軸受、１７Ａ，１８Ａは弁機構の両側に設
けたオイルシール、１９Ａはラツク、２０Ａはラ
ツクサポート、２１Ａはラツクサポート２０Ａを
ラツク１９Ａに押圧するばね、２２Ａは調整ねじ
である。 Conventionally, in this type of device, taking the rack and pinion type power steering device shown in FIG. 1 as an example, an inner valve member 2A is fixed to a stub shaft 3A connected to a handle shaft (not shown) with a pin 4A. Rotates as the handle shaft rotates. The outer valve member 1A fits oil-tightly into the inner cylindrical surface of the valve housing 5A,
The large-diameter inner surface of the pinion shaft 6A is fitted into a flange-like connecting portion at one end of the pinion shaft 6A. A pin 7A is implanted in the flange-like connecting portion, and the pin 7A fits into a radial notch provided on the end face of the outer valve member 1A without any clearance in the circumferential direction, and has a clearance in the axial direction. and then mate. Pinion shaft 6A
is fixed by a pin 10A to a torsion bar 9A which is fixed to the stub shaft 3A by a pin 8A, and the outer valve member 1 is fixed by a pin 7A of the connecting portion.
Rotates with A. A thrust bearing 11A is in contact with the side surface of the outer valve member 1A on the handle side, and the thrust bearing 11A is held by a rear cover 12A screwed into the valve housing 5A. It is held between the rear cover 12A and its axial position is determined. In the figure, 13A and 14A are needle roller bearings and ball bearings that support the pinion shaft 6A;
5A and 16A are needle roller bearings that pivotally support the stub shaft 3A, 17A and 18A are oil seals provided on both sides of the valve mechanism, 19A is a rack, 20A is a rack support, and 21A is a spring that presses the rack support 20A to the rack 19A. , 22A are adjustment screws.
このように外側弁部材１Ａはピニオン軸６Ａと
リアカバー１２Ａに挾圧されて回転する構造であ
るので、外側弁部材１Ａからの油洩れや回転抵抗
を少くするため、ピニオン軸６Ａと外側弁部材１
Ａとの接触面、外側弁部材１Ａとスラスト軸受１
１Ａとの接触面、およびスラスト軸受１１Ａとリ
アカバー１２Ａの接触面（リアカバー１２Ａとバ
ルブハウジング５Ａとのねじ嵌合による影響もあ
る）は回転軸線に対する直角度を精密に加工する
必要があり、工数を要する欠点がある。また、軸
方向寸法の大きいリアカバー１２Ａがバルブハウ
ジング５Ａの内部にねぢ込まれているので、車両
に取付けたときにリアカバー側の余地が少い場合
に設計上の制約を受ける欠点もあつた。 In this way, the outer valve member 1A has a structure in which it rotates while being pinched by the pinion shaft 6A and the rear cover 12A, so in order to reduce oil leakage and rotational resistance from the outer valve member 1A, the pinion shaft 6A and the outer valve member 1A are
Contact surface with A, outer valve member 1A and thrust bearing 1
1A, and the contact surface between the thrust bearing 11A and the rear cover 12A (this is also affected by the threaded fit between the rear cover 12A and the valve housing 5A). There are some drawbacks. Furthermore, since the rear cover 12A, which has a large axial dimension, is screwed into the inside of the valve housing 5A, there is also a disadvantage in that it is subject to design constraints when there is little room on the rear cover side when attached to a vehicle.
本考案は外側弁部材を軸方向固定の回転部材に
固定することにより、前記直角度の精密仕上の必
要をなくし、かつリアカバーがバルブハウジング
内に深く入ることのないようにしたものである。 The present invention eliminates the need for precision finishing of the perpendicularity and prevents the rear cover from penetrating deeply into the valve housing by fixing the outer valve member to an axially fixed rotating member.
上記目的を達成する本願考案は、外側弁部材と
内側弁部材とが相対的に回転し、油路を切替える
形式のバルブと、該バルブと同軸で回転自在に、
かつ、軸方向には移動不能にハウジングに支持さ
れる舵取部材とを備え、該舵取部材に前記外側弁
部材が連結手段により一体となつて回転するロー
タリーバルブ形動力舵取装置において、前記外側
弁部材は前記舵取部材側端部に段部が形成され、
該段部の大径内周面の端部には環状溝を備え、前
記舵取部材は前記バルブ側の端部にフランジ状の
連結部を有し、該連結部の前記バルブ側の端面は
前記段部の端面に当接し、該連結部の円周面は前
記大径円筒面に嵌合し、また、該連結部には前記
環状溝に対応する位置に反バルブ側に向つて小径
となる円錐面が形成され、前記環状溝に結合用リ
ングが嵌合され、該結合用リングが前記円錐面に
接触して前記外側弁部材が前記舵取部材に軸方向
に固定され、さらに、前記連結部にはピンが植設
され、該ピンに対応して前記外側弁部材の前記端
部に切欠きが形成され、該切欠きに前記ピンの先
端が嵌合して前記外側弁部材が前記駆動部材に円
周方向に固定されていることを特徴とするロータ
リーバルブ形動力舵取装置である。 The present invention to achieve the above object includes a valve in which an outer valve member and an inner valve member rotate relative to each other to switch oil passages;
and a steering member axially immovably supported by the housing, the rotary valve type power steering device in which the outer valve member rotates integrally with the steering member by a connecting means, The outer valve member has a stepped portion formed at an end on the steering member side,
An annular groove is provided at the end of the large-diameter inner circumferential surface of the stepped portion, and the steering member has a flange-like connecting portion at the end on the valve side, and the end surface of the connecting portion on the valve side has an annular groove. The connecting portion is in contact with the end surface of the stepped portion, the circumferential surface of the connecting portion is fitted into the large diameter cylindrical surface, and the connecting portion has a small diameter groove toward the side opposite to the valve at a position corresponding to the annular groove. a conical surface is formed, a coupling ring is fitted into the annular groove, the coupling ring contacts the conical surface to axially fix the outer valve member to the steering member; A pin is implanted in the connecting portion, and a notch is formed in the end of the outer valve member corresponding to the pin, and the tip of the pin fits into the notch so that the outer valve member This is a rotary valve type power steering device that is fixed to a driving member in the circumferential direction.
これを第２図の実施例について説明すると、ス
タブシヤフト３はピン４により内側弁部材２と、
ピン８によりトーシヨンバー９に天々連結し、２
個の針状ころ軸受１５，１６で回転自在に軸支さ
れる。ピン１０によりトーシヨンバー９に連結さ
れたピニオン軸６は２個の玉軸受１３，１４で軸
方向位置を固定してギヤハウジング２３に軸支さ
れ、そのピニオン６１はラツク１９と噛み合い、
ラツク１９は調整ねじ２２、ばね２１およびラツ
クサポート２０によりピニオン６１に押圧されて
いる。ピニオン軸６のバルブ側の一端はフランジ
状の連結部となつており、連結部には円筒面６２
とピニオン６１よりに円錐面６３が設けられ、円
筒面６２は外側弁部材１のピニオン側に設けた大
径内周面に嵌合し、円筒面６２の端面と大径内周
面の段部とが接触している。また連結部にはピン
７が植え込まれ、その先端は円筒面６２からつき
出し、外側弁部材１の端面に設けられた放射方向
の切欠き２４に嵌合している。円錐面６３に対向
する位置の大径内周面にはＶ形断面の環状溝１１
が設けられており、こゝに結合用リング２５が嵌
着して円錐面６３に圧接している。結合用リング
２５は円形断面を持つた有端リングであるが、円
錐面６３にガタなく接触し、ピニオン軸６と外側
弁部材１とを軸方向に固定するものであれば断面
形状やリング形状を実施例に限定するものではな
い。外側弁部材１のハンドル側にはリアカバー１
２がボルト２６でバルブハウジング５およびギヤ
ハウジング２３と一体に結合されており、リアカ
バー１２内は内外２個の弁部材１，２に接触しな
い形になつている。リアカバー１２にはスタブシ
ヤフト３との間に針状ころ軸受１６、オイルシー
ル１８およびオイルシール固定部材２８，２９が
あるが、バルブハウジング５にねじ嵌合ではない
ので、バルブハウジング５内に深く入り込む必要
はない。なお符号１７はオイルシール、２７はフ
ロートカバであるが、フロント側は玉軸受１４を
ピニオン軸６に対して軸方向両側に固定すれば第
１図の従来の構造と同様にしてもよい。また、舵
取歯車をラツクピニオン式として例示したが、ボ
ールねじ式でも他形式でも、ウオーム軸を外側弁
部材に実施例同様に連結すればよい。 This will be explained with reference to the embodiment shown in FIG. 2. The stub shaft 3 is connected to the inner valve member 2 by a pin 4.
The pin 8 connects the top to the torsion bar 9.
The pinion shaft 6 is connected to the torsion bar 9 by the pin 10 and is supported by the gear housing 23 with its axial position fixed by two ball bearings 13 and 14. The pinion 61 meshes with the rack 19.
The rack 19 is pressed against the pinion 61 by an adjustment screw 22, a spring 21, and a rack support 20. One end of the pinion shaft 6 on the valve side is a flange-shaped connecting portion, and the connecting portion has a cylindrical surface 62.
A conical surface 63 is provided near the pinion 61, and the cylindrical surface 62 fits into a large-diameter inner peripheral surface provided on the pinion side of the outer valve member 1, with the end face of the cylindrical surface 62 being in contact with a step on the large-diameter inner peripheral surface. A pin 7 is embedded in the connecting portion, with its tip protruding from the cylindrical surface 62 and fitting into a radial notch 24 provided on the end face of the outer valve member 1. An annular groove 11 with a V-shaped cross section is provided on the large-diameter inner peripheral surface at a position opposite the conical surface 63.
The coupling ring 25 is fitted into the conical surface 63 and pressed against the conical surface 63. The coupling ring 25 is an open-ended ring with a circular cross section, but the cross-sectional shape and ring shape are not limited to those in the embodiment as long as it contacts the conical surface 63 without backlash and fixes the pinion shaft 6 and the outer valve member 1 in the axial direction.
2 is integrally connected to the valve housing 5 and the gear housing 23 by bolts 26, and the inside of the rear cover 12 is designed not to come into contact with the two inner and outer valve members 1 and 2. Between the rear cover 12 and the stub shaft 3, there are a needle roller bearing 16, an oil seal 18, and oil seal fixing members 28, 29, but since they are not screwed into the valve housing 5, they do not need to penetrate deep into the valve housing 5. Reference numeral 17 denotes an oil seal, and 27 denotes a float cover, but the front side may be the same as the conventional structure shown in Fig. 1 if ball bearings 14 are fixed to both axial sides of the pinion shaft 6. Also, although the steering gear is exemplified as a rack pinion type, whether it is a ball screw type or another type, the worm shaft may be connected to the outer valve member in the same manner as in the embodiment.
以上のように構成した本考案の動力舵取装置
は、外側弁部材を軸方向に固定された回転部材、
特に舵取歯車部材に固定したので、回転軸線に対
する直角度を精密加工する個所が歯車部材と外側
弁部材の接合面のみとなるので、加工が非常に簡
単となり、外側弁部材の油洩れおよび回転抵抗の
小い装置を提供できる効果がある。また、スラス
ト軸受を介してリアカバーで外側弁部材を軸方向
に拘束する必要がなくなつたので、スラスト軸受
が不要となり、さらにリアカバーの軸方向長さが
小となるので、バルブハウジングをリアカバー側
に短かくすることができ、リア側のスペースが少
い取付状態の場合の設計上の制約を取り除いた効
果がある。さらにこの考案による外側弁部材は比
較的容易にピニオン軸から取はずすことが出来る
ので、仮組立後に内側弁部材又は、バルブハウジ
ングとの嵌合寸法を再選択して交換し再調整して
品質を向上させることが可能であり、又ピン孔の
共加工などのように組立工程の流れの中に機械加
工による成形を行う必要がないので、工程が単純
になり管理上の利点が生ずる。 In the power steering device of the present invention configured as described above, the outer valve member is a rotating member fixed in the axial direction;
In particular, since it is fixed to the steering gear member, the only part to precisely machine the perpendicularity to the rotational axis is the joint surface between the gear member and the outer valve member, making the processing very simple and preventing oil leakage and rotation of the outer valve member. This has the effect of providing a device with low resistance. In addition, since it is no longer necessary to axially restrain the outer valve member with the rear cover via the thrust bearing, there is no need for a thrust bearing.Furthermore, the axial length of the rear cover is reduced, so the valve housing can be moved closer to the rear cover. It can be made shorter and has the effect of removing design constraints when installed with little space on the rear side. Furthermore, the outer valve member according to this invention can be relatively easily removed from the pinion shaft, so after temporary assembly, the fitting dimensions with the inner valve member or valve housing can be reselected, replaced, and readjusted to improve quality. Moreover, since there is no need to perform forming by machining during the assembly process, such as co-machining of pin holes, the process is simplified and there are management advantages.
第１図の従来技術を示す動力舵取装置のピニオ
ン軸についての縦断面図、第２図は本考案の実施
例を示す動力舵取装置のピニオン軸についての縦
断面図である。
符号の説明、１：外側弁部材、２：内側弁部
材、３：スタブシヤフト、６：ピニオン軸、１
１：環状溝、２４：切欠き、２５：結合用リン
グ、６３：円錐面。
FIG. 1 is a vertical cross-sectional view of a pinion shaft of a power steering device showing the prior art, and FIG. 2 is a vertical cross-sectional view of a pinion shaft of a power steering device showing an embodiment of the present invention. Explanation of symbols, 1: Outer valve member, 2: Inner valve member, 3: Stub shaft, 6: Pinion shaft, 1
1: Annular groove, 24: Notch, 25: Coupling ring, 63: Conical surface.
Claims (1)
し、油路を切替える形式のバルブと、該バルブ
と同軸で回転自在に、かつ、軸方向には移動不
能にハウジングに支持される舵取部材とを備
え、該舵取部材に前記外側弁部材が連結手段に
より一体となつて回転するロータリーバルブ形
動力舵取装置において、前記外側弁部材は前記
舵取部材側端部に段部が形成され、該段部の大
径内周面の端部には環状溝を備え、前記舵取部
材は前記バルブ側の端部にフランジ状の連結部
を有し、該連結部の前記バルブ側の端面は前記
段部の端面に当接し、該連結部の円筒面は前記
大径円筒面に嵌合し、また、該連結部には前記
環状溝に対応する位置に反バルブ側に向つて小
径となる円錐面が形成され、前記環状溝に結合
用リングが嵌合され、該結合用リングが前記円
錐面に接触して前記外側弁部材が前記舵取部材
に軸方向に固定され、さらに、前記連結部には
ピンが植設され、該ピンに対応して前記外側弁
部材の前記端部に切欠きが形成され、該切欠き
に前記ピンの先端が嵌合して前記外側弁部材が
前記舵取部材に円周方向に固定されていること
を特徴とするロータリーバルブ形動力舵取装
置。 (2) 前記舵取部材がラツクピニオン式動力舵取装
置のピニオン軸である実用新案登録請求の範囲
第１項記載のロータリーバルブ形動力舵取装
置。[Claims for Utility Model Registration] (1) A valve of a type in which an outer valve member and an inner valve member rotate relative to each other to switch oil passages, and a valve that is rotatable coaxially with the valve and that is axially A rotary valve type power steering device comprising a steering member immovably supported by a housing, and in which the outer valve member rotates integrally with the steering member by a connecting means, the outer valve member is connected to the steering member. A step is formed at the end on the steering member side, an annular groove is provided at the end of the large-diameter inner circumferential surface of the step, and the steering member has a flange-like connecting portion at the end on the valve side. The end surface of the connecting portion on the valve side abuts the end surface of the stepped portion, the cylindrical surface of the connecting portion fits into the large diameter cylindrical surface, and the connecting portion has a groove that corresponds to the annular groove. A conical surface that becomes smaller in diameter toward the side opposite to the valve is formed at a position where the outer valve member becomes smaller in diameter toward the opposite valve side, and a coupling ring is fitted into the annular groove, and the coupling ring contacts the conical surface so that the outer valve member is connected to the steering wheel. A pin is fixed to the member in the axial direction, and a pin is implanted in the connecting portion, a notch is formed in the end of the outer valve member corresponding to the pin, and a tip of the pin is formed in the notch. A rotary valve type power steering device, characterized in that the outer valve member is fixed to the steering member in a circumferential direction by being fitted with the outer valve member. (2) The rotary valve type power steering device according to claim 1, wherein the steering member is a pinion shaft of a rack and pinion type power steering device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977175766U JPS6137568Y2 (en) | 1977-12-28 | 1977-12-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977175766U JPS6137568Y2 (en) | 1977-12-28 | 1977-12-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54101734U JPS54101734U (en) | 1979-07-18 |
| JPS6137568Y2 true JPS6137568Y2 (en) | 1986-10-30 |
Family
ID=29183642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1977175766U Expired JPS6137568Y2 (en) | 1977-12-28 | 1977-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6137568Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5943267U (en) * | 1982-09-14 | 1984-03-21 | 豊田工機株式会社 | Control valve device for power steering device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4927898A (en) * | 1972-07-10 | 1974-03-12 | ||
| JPS5262833A (en) * | 1975-11-14 | 1977-05-24 | Gen Motors Corp | Power steering gear |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5211554Y2 (en) * | 1972-06-13 | 1977-03-14 |
-
1977
- 1977-12-28 JP JP1977175766U patent/JPS6137568Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4927898A (en) * | 1972-07-10 | 1974-03-12 | ||
| JPS5262833A (en) * | 1975-11-14 | 1977-05-24 | Gen Motors Corp | Power steering gear |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54101734U (en) | 1979-07-18 |
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