JPH11198826A - Rack-and-pinion type steering device - Google Patents

Rack-and-pinion type steering device

Info

Publication number
JPH11198826A
JPH11198826A JP807598A JP807598A JPH11198826A JP H11198826 A JPH11198826 A JP H11198826A JP 807598 A JP807598 A JP 807598A JP 807598 A JP807598 A JP 807598A JP H11198826 A JPH11198826 A JP H11198826A
Authority
JP
Japan
Prior art keywords
rack
hole
pinion type
steering device
projection
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
JP807598A
Other languages
Japanese (ja)
Other versions
JP3624301B2 (en
Inventor
Noboru Minamoto
昇 源
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.)
Koyo Seiko Co Ltd
Original Assignee
Koyo Seiko Co Ltd
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 Koyo Seiko Co Ltd filed Critical Koyo Seiko Co Ltd
Priority to JP00807598A priority Critical patent/JP3624301B2/en
Publication of JPH11198826A publication Critical patent/JPH11198826A/en
Application granted granted Critical
Publication of JP3624301B2 publication Critical patent/JP3624301B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D3/00—Steering gears
    • B62D3/02—Steering gears mechanical
    • B62D3/12—Steering gears mechanical of rack-and-pinion type
    • B62D3/123—Steering gears mechanical of rack-and-pinion type characterised by pressure yokes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/26—Racks
    • F16H55/28—Special devices for taking up backlash
    • F16H55/283—Special devices for taking up backlash using pressure yokes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Transmission Devices (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a rack-and-pinion type steering device which can preclude a guide sheet from warping with respect to a sliding member in good performance, lessen the number of component items used, and can enhance easiness in the assembling workability. SOLUTION: The back face to rack teeth 2a of a rack shaft 2 moving in the longitudinal direction in compliance with the steering operation is supported by a pair of guide sheets 6, 6 on a housing 3 together with a pair of a sliding members 5 provided with fitting holes and a sheet body is furnished with a contacting surface where guide sheets 6, 6 contact with the back surface where projections 62 are provided on the sheet body in a single piece with its side face opposite the contacting surface to be fitted in the fitting holes. The sheet body is curved in the direction opposite the projections 62 in the area from the periphery to the center, and by fitting of the projections 62 into the fitting holes, the sheet body is forcedly deformed elastically in the direction opposite the curving direction so that flat condition is established.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、自動車用のラック
ピニオン式舵取装置の一形式として広く普及しているラ
ックピニオン式の舵取装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rack and pinion type steering device widely used as one type of a rack and pinion type steering device for an automobile.

【０００２】[0002]

【従来の技術】ラックピニオン式の舵取装置は、図４に
示す如く車体の左右方向へ延びる筒状部（図示せず）が
設けられたハウジング１０１に、ピニオン１０２ａが設
けられ、舵輪（ステアリングホィール）に連結されるピ
ニオン軸１０２と、前記ピニオン１０２ａと噛合するラ
ック歯１０３ａが設けられ、左右の操向輪に連結される
ラック軸１０３とを支持し、舵取り操作力をピニオン軸
１０２、ピニオン１０２ａ及びラック歯１０３ａを介し
てラック軸１０３に伝達し、該ラック軸１０３を軸長方
向へ移動させて、左右の操向輪を操向する構成となって
いる。2. Description of the Related Art As shown in FIG. 4, a rack-and-pinion type steering apparatus is provided with a pinion 102a in a housing 101 provided with a tubular portion (not shown) extending in the left-right direction of a vehicle body. A pinion shaft 102 connected to a wheel is provided, and a rack tooth 103a meshing with the pinion 102a is provided to support a rack shaft 103 connected to left and right steering wheels, and a steering operation force is applied to the pinion shaft 102 and the pinion. The rack shaft 103 is transmitted to the rack shaft 103 via the rack teeth 102a and the rack teeth 103a, and the rack shaft 103 is moved in the axial direction to steer left and right steering wheels.

【０００３】このようなラックピニオン式の舵取装置に
おいては、ピニオン１０２ａ及びラック歯１０３ａを実
質的にバックラッシがない状態で噛み合わせることが重
要であるため、図４に示す如くラック軸１０３のラック
歯１０３ａと反対の側面を支持するハウジング１０１
に、ラック軸１０３の軸長方向と交叉する方向へ摺動自
在に付勢され、嵌合孔１０４ａ，１０４ａが設けられた
一対の摺動体１０４，１０４及びこれら摺動体１０４，
１０４に保持された一対の案内シート１０５，１０５を
介して前記ハウジング１０１支持している。In such a rack-and-pinion type steering apparatus, it is important that the pinion 102a and the rack teeth 103a mesh with each other without substantially backlash, and as shown in FIG. Housing 101 supporting the side opposite to teeth 103a
A pair of sliding members 104, 104 having fitting holes 104a, 104a, and a pair of sliding members 104, 104 which are slidably biased in a direction intersecting with the axial length direction of the rack shaft 103.
The housing 101 is supported via a pair of guide sheets 105, 105 held by 104.

【０００４】前記各案内シート１０５，１０５は、図５
に示す如く前記ラック軸１０３の側面と接触する接触面
１０５ａが設けられた扁平板により形成され、該扁平板
の前記嵌合孔１０４ａ，１０４ａとの対向位置に貫通す
るテーパ孔１０５ｂ，１０５ｂを設け、一端部に前記テ
ーパ孔１０５ｂ，１０５ｂの傾斜角よりも大きな傾斜角
としたテーパ頭部１０６ａ，１０６ａが設けられたリベ
ット１０６，１０６を前記テーパ孔１０５ｂ，１０５ｂ
から前記嵌合孔１０４ａ，１０４ａへと強制的に打込む
ことにより、案内シート１０５，１０５を摺動体１０
４，１０４に保持させている。[0004] Each of the guide sheets 105, 105 is shown in FIG.
As shown in FIG. 5, tapered holes 105b, 105b are formed by a flat plate provided with a contact surface 105a that comes into contact with the side surface of the rack shaft 103 at positions opposed to the fitting holes 104a, 104a of the flat plate. The rivets 106, 106 provided at one end with tapered heads 106a, 106a having an inclination angle larger than the inclination angle of the tapered holes 105b, 105b are connected to the tapered holes 105b, 105b.
The guide sheets 105, 105 are forcibly driven into the fitting holes 104a, 104a from the
4,104.

【０００５】[0005]

【発明が解決しようとする課題】ところが、前記した従
来の案内シート１０５は、該案内シート１０５のテーパ
孔１０５ｂから摺動体１０４の嵌合孔１０４ａへとリベ
ット１０６を打込むことにより保持する構造であるた
め、リベット１０６の打込みストロークが不足する場合
は、リベット１０６のテーパ頭部１０６ａが案内シート
１０５の接触面１０５ａから突出することになり、この
突出した状態で摺動体１０４がハウジング１０１に組み
込まれた場合、ラック軸１０３が傷付くだけでなく、ラ
ック軸１０３の移動抵抗が増大することになるという問
題がある。また、リベット１０６の打込みストロークが
過剰となる場合、前記テーパ孔１０５ｂに過大の打込力
が作用して、図５（ｄ）に示す如く案内シート１０５が
中央部から外周部へかけて前記摺動体１０４と反対方向
へ反ることになり、案内シート１０５の背面を摺動体１
０４に接触させることができないという問題があった。However, the conventional guide sheet 105 described above has a structure in which a rivet 106 is held by driving a rivet 106 from a tapered hole 105b of the guide sheet 105 into a fitting hole 104a of a sliding body 104. Therefore, when the driving stroke of the rivet 106 is insufficient, the tapered head portion 106a of the rivet 106 projects from the contact surface 105a of the guide sheet 105, and the sliding body 104 is assembled into the housing 101 in this projected state. In this case, there is a problem that not only the rack shaft 103 is damaged but also the movement resistance of the rack shaft 103 increases. When the driving stroke of the rivet 106 is excessive, an excessive driving force acts on the tapered hole 105b, and the guide sheet 105 slides from the central portion to the outer peripheral portion as shown in FIG. The moving body 104 is warped in the opposite direction.
04 cannot be brought into contact.

【０００６】また、案内シート１０５とは別個にリベッ
ト１０６が必要であるため、部品点数が多いのであり、
さらに、小さな案内シートを小さなリベット１０６の打
込により固定するから、リベット１０６を適正な打込み
ストロークに打込み難いのであり、作業性が悪いという
問題もあった。Since the rivet 106 is required separately from the guide sheet 105, the number of parts is large.
Further, since the small guide sheet is fixed by driving the small rivet 106, it is difficult to drive the rivet 106 to an appropriate driving stroke, and there is a problem that workability is poor.

【０００７】本発明は斯かる事情に鑑みてなされたもの
であり、摺動体に保持する案内シートを、接触面が設け
られたシート本体及び該シート本体と一体の突起を備え
た構造とし、さらにシート本体を湾曲させてその凹面に
突起を設けることにより、案内シートが摺動体に対して
反るのを良好に防ぐことができ、部品点数を少なくする
ことができ、組み付け作業性を良好にすることができる
ラックピニオン式舵取装置を提供することを目的とす
る。The present invention has been made in view of such circumstances, and a guide sheet to be held on a sliding body has a structure provided with a sheet body provided with a contact surface and a projection integral with the sheet body. By curving the sheet body and providing projections on its concave surface, it is possible to prevent the guide sheet from warping against the sliding body, reduce the number of parts, and improve the assembling workability. It is an object of the present invention to provide a rack-and-pinion type steering device that can be used.

【０００８】[0008]

【課題を解決するための手段】第１発明に係るラックピ
ニオン式舵取装置は、舵取り操作に応じて軸長方向へ移
動するラック軸のラック歯と反対の側面を支持するハウ
ジングに、ラック軸の軸長方向と交叉する方向へ摺動自
在に付勢され、孔が設けられた摺動体及び該摺動体の前
記孔に保持されて前記ラック軸を案内する案内シートを
備えたラックピニオン式舵取装置において、前記案内シ
ートは、断面が湾曲するシート本体と、該シート本体の
凹面にこれと一体に形成され前記孔に嵌合する突起とを
備えていることを特徴とする。According to a first aspect of the present invention, there is provided a rack-and-pinion type steering apparatus comprising: a housing for supporting a side surface of a rack shaft, which moves in an axial direction in response to a steering operation, on a side opposite to a rack tooth; Rack and pinion type rudder provided with a sliding body slidably biased in a direction intersecting the axial direction of the sliding body and having a hole, and a guide sheet held in the hole of the sliding body and guiding the rack shaft. The guide sheet is characterized in that the guide sheet includes a sheet body having a curved cross section, and a projection formed integrally with the concave surface of the sheet body and fitted into the hole.

【０００９】第１発明にあっては、摺動体の孔に嵌合す
る突起をシート本体と一体に形成して、シート本体を突
起と反対方向へ予め湾曲させたから、突起を摺動体の孔
に嵌合した場合、シート本体の外周部が摺動体に接触
し、この接触した状態から前記突起をさらに孔の奥まで
嵌め込むことにより、シート本体を強制的に湾曲方向と
反対方向へ弾性変形させて扁平にすることができ、案内
シートが摺動体に対して反るのを良好に防ぐことができ
る。従って、摺動体がハウジングに組み込まれた場合、
案内シートの接触面をラック軸のラック歯と反対の側面
に良好に接触させることができる。また、シート本体に
突起を一体に設けたから、従来例に比べて部品点数を少
なくすることができ、組み付け作業性を向上することが
できる。According to the first aspect of the present invention, since the projection which fits into the hole of the sliding body is formed integrally with the sheet body and the sheet body is previously curved in the direction opposite to the projection, the projection is formed in the hole of the sliding body. When fitted, the outer peripheral portion of the sheet body comes into contact with the sliding body, and from this contact state, the projection is further fitted to the inside of the hole, thereby forcibly deforming the sheet body in the direction opposite to the bending direction. The guide sheet can be flattened, and the guide sheet can be favorably prevented from warping with respect to the sliding body. Therefore, when the sliding body is incorporated in the housing,
The contact surface of the guide sheet can be satisfactorily brought into contact with the side of the rack shaft opposite to the rack teeth. Further, since the projections are integrally provided on the seat body, the number of parts can be reduced as compared with the conventional example, and the assembling workability can be improved.

【００１０】第２発明に係るラックピニオン式舵取装置
は、前記突起に、摺動体の孔へ嵌合するとき弾性変形し
て弾性復元力を前記孔に作用させる弾性変形部が設けら
れていることを特徴とする。In the rack-and-pinion type steering device according to the second aspect of the present invention, the projection is provided with an elastically deformable portion which is elastically deformed when fitted into the hole of the sliding body to apply an elastic restoring force to the hole. It is characterized by the following.

【００１１】第２発明にあっては、突起を孔に嵌合する
とき、弾性変形許容手段により突起を弾性変形させるこ
とができるから、孔及び突起の加工誤差に影響されるこ
となく、突起を孔に良好に固定することができる。According to the second aspect of the present invention, when the projection is fitted into the hole, the projection can be elastically deformed by the elastic deformation permitting means. Good fixation in the hole.

【００１２】第３発明に係るラックピニオン式舵取装置
は、前記突起が、割り溝が設けられた筒状に形成されて
いることを特徴とする。A rack and pinion type steering device according to a third invention is characterized in that the projection is formed in a cylindrical shape provided with a split groove.

【００１３】第３発明にあっては、割り溝により突起自
体を弾性変形させるから、その弾性復元力を大きくで
き、突起を確実に固定することができる。また、割り溝
は、シート本体及び突起とともに成形することができる
から、加工工程の増加がなく、安価に構成することがで
きる。According to the third aspect of the present invention, since the projection itself is elastically deformed by the split groove, its elastic restoring force can be increased, and the projection can be securely fixed. Further, since the split groove can be formed together with the sheet body and the projection, the number of processing steps does not increase, and the split groove can be formed at low cost.

【００１４】[0014]

【発明の実施の形態】以下本発明をその実施の形態を示
す図面に基づいて詳述する。図１は本発明に係るラック
ピニオン式舵取装置の要部の縦断面図、図２は摺動体に
案内シートを組み付けた状態を示すもので、（ａ）は縦
断正面図、（ｂ）はＸ−Ｘ線の断面図、（ｃ）はＹ−Ｙ
線の断面図、図３は案内シートを示すもので、（ａ）は
正面図、（ｂ）はＺ−Ｚ線の断面図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing the embodiments. FIG. 1 is a longitudinal sectional view of a main part of a rack and pinion type steering apparatus according to the present invention, FIG. 2 shows a state where a guide sheet is assembled to a sliding body, (a) is a longitudinal sectional front view, and (b) is Sectional view along line XX, (c) is YY
3A and 3B show a guide sheet, and FIG. 3A is a front view and FIG. 3B is a sectional view taken along line ZZ.

【００１５】図１に示したラックピニオン式の舵取装置
は、一端部が舵輪（ステアリングホイール）に連動連結
され、他端部にピニオン１ａが設けられたピニオン軸１
と、前記ピニオン１ａに噛合するラック歯２ａが設けら
れ、車体の左右方向へ延設されたラック軸２と、これら
ピニオン軸１及びラック軸２を支持するハウジング３と
を備えている。ラック軸２は、長手方向中間に前記ラッ
ク歯２ａが設けられ、該ラック歯２ａと反対の側面に、
実質的に直角の平坦面２ｂ，２ｂを設けている。The rack-and-pinion type steering device shown in FIG. 1 has a pinion shaft 1 having one end linked to a steering wheel (steering wheel) and a pinion 1a provided at the other end.
And a rack shaft 2 that is provided with rack teeth 2a meshing with the pinion 1a, and extends in the left-right direction of the vehicle body, and a housing 3 that supports the pinion shaft 1 and the rack shaft 2. The rack shaft 2 is provided with the rack teeth 2a in the middle in the longitudinal direction, and on the side opposite to the rack teeth 2a,
Substantially perpendicular flat surfaces 2b, 2b are provided.

【００１６】ハウジング３は、図１に示す如く貫通する
第１軸孔３１と、該第１軸孔３１の中心線に対し偏位し
た位置から第１軸孔３１と交叉して貫通する第２軸孔３
２と、該第２軸孔３２の軸長方向中間から外面に開放さ
れた保持孔３３とを備え、第１軸孔３１に軸受４，４を
介してピニオン軸１を回転自在に支持し、第２軸孔３２
にラック軸２を移動自在に支持し、保持孔３３に、摺動
自在であり、合成樹脂製の一対の摺動体５，５及びこれ
ら摺動体５，５を前記ラック軸２の平坦面２ｂ，２ｂに
向けて付勢するコイルバネを用いてなる付勢ばね７を設
けている。また、ギヤハウジング３には、前記保持孔３
３を閉塞して前記付勢ばね７を受止める蓋体８を取付ね
じ９により着脱可能に取付けている。As shown in FIG. 1, the housing 3 has a first shaft hole 31 penetrating therethrough, and a second shaft hole 31 penetrating the first shaft hole 31 intersecting therewith from a position deviated from the center line of the first shaft hole 31. Shaft hole 3
2 and a holding hole 33 opened to the outer surface from the middle in the axial length direction of the second shaft hole 32, and rotatably supports the pinion shaft 1 in the first shaft hole 31 via the bearings 4 and 4. Second shaft hole 32
The rack shaft 2 is movably supported, and a pair of sliding members 5 and 5 made of synthetic resin, which are slidable in the holding holes 33, and these sliding members 5 and 5 are connected to the flat surfaces 2b and An urging spring 7 using a coil spring urging toward 2b is provided. The gear housing 3 has the holding hole 3.
A cover 8 that closes 3 and receives the urging spring 7 is detachably attached by an attachment screw 9.

【００１７】摺動体５，５は、図２に示す如く有底の筒
体を半割りにした形状であり、その割面に相当する周方
向端面同志を対向させて、凹所５ａ内に略Ｃ字形のセッ
トリング１０及び前記蓋体８と対向するばね受板１１を
挿入し、該ばね受板１１と前記蓋体８との間に前記付勢
ばね７を介装して前記摺動体５，５をラック軸２の平坦
面２ｂ，２ｂへ付勢し、また、セットリング１０により
摺動体５，５を保持孔３３の内面に軽く接触させて摺動
体５，５のガタ付きを防止している。As shown in FIG. 2, each of the sliding members 5 and 5 has a shape in which a bottomed cylindrical body is divided in half, and circumferential end surfaces corresponding to the divided surfaces thereof are opposed to each other so as to be substantially formed in the recess 5a. A C-shaped set ring 10 and a spring receiving plate 11 opposed to the lid 8 are inserted, and the urging spring 7 is interposed between the spring receiving plate 11 and the lid 8 so that the sliding member 5 is inserted. , 5 are urged against the flat surfaces 2 b, 2 b of the rack shaft 2, and the sliding members 5, 5 are lightly contacted with the inner surface of the holding hole 33 by the set ring 10 to prevent the sliding members 5, 5 from rattling. ing.

【００１８】各摺動体５，５の底部の外面は、図２に示
す如く周方向端面に対し実質的に４５度の角度で前記凹
所５ａ，５ａと反対方向へ傾斜する傾斜面５ｂ，５ｂを
設け、該傾斜面５ｂ，５ｂに合成樹脂製の案内シート
６，６を保持している。傾斜面５ｂ，５ｂには、案内シ
ート６，６に対応する浅底の受面５ｃ，５ｃ及び該受面
５ｃ，５ｃの中央部から傾斜面５ｂ，５ｂと直交する方
向へ凹入する孔５０，５０が設けられている。As shown in FIG. 2, the outer surfaces of the bottoms of the sliding members 5, 5 are inclined surfaces 5b, 5b inclined at an angle of substantially 45 degrees with respect to the circumferential end surfaces in the direction opposite to the recesses 5a, 5a. And guide sheets 6, 6 made of synthetic resin are held on the inclined surfaces 5b, 5b. The inclined surfaces 5b, 5b have shallow bottom receiving surfaces 5c, 5c corresponding to the guide sheets 6, 6, and a hole 50 recessed from the center of the receiving surfaces 5c, 5c in a direction perpendicular to the inclined surfaces 5b, 5b. , 50 are provided.

【００１９】案内シート６，６は、図３に示す如く前記
ラック軸２の平坦面２ｂ，２ｂと接触する接触面６１
ａ，６１ａが設けられ部分球殻に湾曲する弾性変形が可
能なシート本体６１，６１、及び該シート本体６１，６
１の凹面の中央部にこれと一体に形成され前記孔５０，
５０に嵌合する円筒状の突起６２，６２を備え、この突
起６２，６２を前記孔５０，５０へ嵌合することによ
り、シート本体６１，６１を弾性変形させることができ
るようにしている。As shown in FIG. 3, the guide sheets 6, 6 have contact surfaces 61 which come into contact with the flat surfaces 2b, 2b of the rack shaft 2.
a, 61a provided with elastically deformable sheet bodies 61 and 61 curved into partial spherical shells;
In the central portion of the concave surface of one, the holes 50,
The projections 62 are fitted into the holes 50 so that the seat bodies 61 can be elastically deformed.

【００２０】突起６２，６２は、一つの割り溝６２ａ，
６２ａが設けられた円筒状に形成して、割り溝６２ａ，
６２ａにより突起６２，６２を弾性変形させて縮径し、
その弾性復元力により孔５０，５０に固定するようにし
ている。また、割り溝６２ａ，６２ａは、シート本体６
１，６１及び突起６２，６２とともに成形する。The projections 62, 62 are provided with one split groove 62a,
62a is formed in a cylindrical shape provided with a split groove 62a,
The protrusions 62, 62 are elastically deformed by 62a to reduce the diameter,
The holes 50, 50 are fixed by the elastic restoring force. Also, the split grooves 62a, 62a are
1, 61 and the projections 62, 62 are molded.

【００２１】尚、前記蓋体８には、前記ばね受板１１に
当接する調節ねじ１２を螺着して、該調節ねじ１２を回
転操作することによりばね受板１１、すなわち摺動体
５，５の動きを許容する隙間を調節可能としている。An adjusting screw 12 which comes into contact with the spring receiving plate 11 is screwed into the lid 8 and the adjusting screw 12 is rotated to operate the spring receiving plate 11, that is, the sliding members 5,5. The gap that allows the movement is adjustable.

【００２２】以上の如く構成した案内シート６，６は、
突起６２，６２を摺動体５，５の孔５０，５０へ嵌合す
ることにより、シート本体６１，６１の外周部が摺動体
５，５の受面５ｃ，５ｃと接触し、この接触した状態か
ら前記突起６２，６２をさらに孔５０，５０の奥まで嵌
め込むことにより、シート本体６１，６１を強制的に湾
曲方向と反対方向へ弾性変形させて扁平にすることがで
き、このシート本体６１，６１の背面と摺動体５，５の
受面５ｃ，５ｃとの間に隙間ができるのを良好になくす
ることができる。従って、摺動体５，５がギヤハウジン
グ３に組み込まれた場合、案内シート６，６の接触面６
１ａ，６１ａをラック軸２の平坦面２ｂ，２ｂに良好に
接触させることができる。また、シート本体６１，６１
及び突起６２，６２を一体に成形したから、従来例に比
べて部品点数を少なくすることができ、組み付け作業性
を向上することができる。The guide sheets 6 and 6 configured as described above are
By fitting the projections 62, 62 into the holes 50, 50 of the sliding members 5, 5, the outer peripheral portions of the sheet bodies 61, 61 come into contact with the receiving surfaces 5c, 5c of the sliding members 5, 5, and this contact state By further fitting the projections 62, 62 into the holes 50, 50, the seat bodies 61, 61 can be forcibly elastically deformed in a direction opposite to the bending direction and flattened. , 61 and the receiving surfaces 5c, 5c of the sliding members 5, 5 can be satisfactorily eliminated. Therefore, when the sliding members 5, 5 are incorporated in the gear housing 3, the contact surfaces 6 of the guide sheets 6, 6
1a, 61a can be brought into good contact with the flat surfaces 2b, 2b of the rack shaft 2. Further, the seat bodies 61, 61
Since the projections 62 and 62 are integrally formed, the number of components can be reduced as compared with the conventional example, and assembling workability can be improved.

【００２３】尚、以上説明した実施の形態では、シート
本体６１，６１を部分球殻に湾曲させたが、その他、例
えば弓形状または断面円弧状に湾曲させてもよい。ま
た、以上説明した実施の形態では、突起６２を筒状に形
成し、該突起６２に少なくとも一つの割り溝６２ａを設
けて突起６２を弾性変形させるように構成したが、その
他、前記割り溝６２ａを設ける代わりに、突起６２の外
周面に、突起６２の長手方向又は周方向へ延びる弾性変
形が可能な少なくとも一つの凸条の弾性変形部を設けて
もよい。In the above-described embodiment, the seat bodies 61, 61 are curved into partial spherical shells, but may be curved, for example, into an arc shape or an arc-shaped cross section. Further, in the embodiment described above, the protrusion 62 is formed in a cylindrical shape, and the protrusion 62 is provided with at least one split groove 62a so that the protrusion 62 is elastically deformed. May be provided on the outer peripheral surface of the projection 62 at least one elastically deformable ridge extending in the longitudinal or circumferential direction of the projection 62 and capable of elastic deformation.

【００２４】[0024]

【発明の効果】以上詳述した如く第１発明のラックピニ
オン式舵取装置によれば、シート本体と一体に形成した
突起を摺動体の孔に嵌合することによりシート本体を強
制的に湾曲方向と反対方向へ弾性変形させて扁平にする
ことができ、案内シートが摺動体に対して反るのを良好
に防ぐことができる。従って、シート本体の背面と摺動
体との間に隙間ができるのを良好になくすることができ
るから、摺動体がハウジングに組み込まれた場合、案内
シートの接触面をラック軸の背面に良好に接触させるこ
とができる。しかも、シート本体に突起を一体に設けた
から、従来例に比べて部品点数を少なくすることがで
き、組み付け作業性を向上することができる。As described above in detail, according to the rack and pinion type steering device of the first invention, the seat body is forcibly bent by fitting the projection formed integrally with the seat body into the hole of the sliding body. The guide sheet can be elastically deformed in the opposite direction to be flattened, and the guide sheet can be prevented from warping the sliding body. Therefore, it is possible to satisfactorily prevent a gap from being formed between the rear surface of the seat body and the sliding body, so that when the sliding body is incorporated in the housing, the contact surface of the guide sheet is preferably formed on the rear surface of the rack shaft. Can be contacted. Moreover, since the projections are integrally provided on the seat body, the number of components can be reduced as compared with the conventional example, and the assembling workability can be improved.

【００２５】第２発明のラックピニオン式舵取装置によ
れば、嵌合孔及び突起の加工誤差に影響されることな
く、嵌合孔に嵌合した突起を良好に固定することができ
る。According to the rack-and-pinion steering apparatus of the second invention, the projection fitted into the fitting hole can be satisfactorily fixed without being affected by machining errors of the fitting hole and the projection.

【００２６】第３発明のラックピニオン式舵取装置によ
れば、突起自体の弾性変形によりその弾性復元力を大き
くすることができるから、突起を確実に固定することが
できる。しかも、割り溝は、シート本体及び突起ととも
に成形することができるから、加工工程の増加がなく、
安価に構成することができる。According to the rack-and-pinion type steering device of the third aspect, the elastic restoring force of the projection itself can be increased by the elastic deformation of the projection itself, so that the projection can be securely fixed. Moreover, since the split groove can be formed together with the sheet body and the projection, there is no increase in the number of processing steps,
It can be configured at low cost.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明に係るラックピニオン式舵取装置の要部
の縦断面図である。FIG. 1 is a longitudinal sectional view of a main part of a rack and pinion type steering device according to the present invention.

【図２】本発明に係るラックピニオン式舵取装置の摺動
体に案内シートを組み付けた状態を示すもので、（ａ）
は縦断正面図、（ｂ）はＸ−Ｘ線による断面図、（ｃ）
はＹ−Ｙ線による断面図である。FIG. 2 shows a state in which a guide sheet is assembled to a sliding body of the rack and pinion type steering device according to the present invention, and (a).
Is a vertical front view, (b) is a cross-sectional view taken along line XX, (c)
Is a sectional view taken along line YY.

【図３】本発明に係るラックピニオン式舵取装置の案内
シートを示すもので、（ａ）は正面図、（ｂ）はＺ−Ｚ
線の断面図である。FIG. 3 shows a guide sheet of the rack and pinion type steering device according to the present invention, wherein (a) is a front view and (b) is a ZZ.
It is sectional drawing of a line.

【図４】従来のラックピニオン式の舵取装置の縦断面図
である。FIG. 4 is a longitudinal sectional view of a conventional rack and pinion type steering device.

【図５】従来のラックピニオン式の舵取装置の摺動体及
び案内シートを示すもので、（ａ）は摺動体に案内シー
トを取付けた状態の断面図、（ｂ）は案内シートのみの
断面図、（ｃ）はリベットのみの正面図、（ｄ）は案内
シートが湾曲した状態を示す説明図である。5A and 5B show a sliding body and a guide sheet of a conventional rack and pinion type steering device, wherein FIG. 5A is a cross-sectional view showing a state where a guide sheet is attached to the sliding body, and FIG. FIG. 3C is a front view of only the rivet, and FIG. 4D is an explanatory view showing a state where the guide sheet is curved.

【符号の説明】[Explanation of symbols]

２ ラック軸 ２ａ ラック歯 ３ ハウジング ５ 摺動体 ５０ 嵌合孔 ６ 案内シート ６１ シート本体 ６１ａ 接触面 ６２ 突起 ６２ａ 割り溝 2 Rack shaft 2a Rack teeth 3 Housing 5 Sliding body 50 Fitting hole 6 Guide sheet 61 Sheet body 61a Contact surface 62 Projection 62a Split groove

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 舵取り操作に応じて軸長方向へ移動する
ラック軸のラック歯と反対の側面を支持するハウジング
に、ラック軸の軸長方向と交叉する方向へ摺動自在に付
勢され、孔が設けられた摺動体及び該摺動体の前記孔に
保持されて前記ラック軸を案内する案内シートを備えた
ラックピニオン式舵取装置において、前記案内シート
は、断面が湾曲するシート本体と、該シート本体の凹面
にこれと一体に形成され前記孔に嵌合する突起とを備え
ていることを特徴とするラックピニオン式舵取装置。1. A housing which supports a side surface of a rack shaft, which moves in an axial direction in response to a steering operation, on a side opposite to a rack tooth, is slidably urged in a direction crossing the axial direction of the rack shaft, In a rack-and-pinion type steering device including a sliding body provided with a hole and a guide sheet held in the hole of the sliding body and guiding the rack shaft, the guide sheet has a sheet body having a curved cross section, A rack and pinion type steering device comprising: a concave surface of the seat body; and a projection formed integrally with the seat body and fitted into the hole. 【請求項２】 前記突起は、前記孔へ嵌合するとき弾性
変形して弾性復元力を前記孔に作用させる弾性変形部が
設けられている請求項１記載のラックピニオン式舵取装
置。2. The rack and pinion type steering device according to claim 1, wherein said projection is provided with an elastic deformation portion which elastically deforms when fitted into said hole and applies an elastic restoring force to said hole. 【請求項３】 前記突起は、割り溝が設けられた筒状に
形成されている請求項１記載のラックピニオン式舵取装
置。3. The rack and pinion steering apparatus according to claim 1, wherein the projection is formed in a cylindrical shape provided with a split groove.
JP00807598A 1998-01-19 1998-01-19 Rack and pinion type steering device Expired - Fee Related JP3624301B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP00807598A JP3624301B2 (en) 1998-01-19 1998-01-19 Rack and pinion type steering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP00807598A JP3624301B2 (en) 1998-01-19 1998-01-19 Rack and pinion type steering device

Publications (2)

Publication Number Publication Date
JPH11198826A true JPH11198826A (en) 1999-07-27
JP3624301B2 JP3624301B2 (en) 2005-03-02

Family

ID=11683230

Family Applications (1)

Application Number Title Priority Date Filing Date
JP00807598A Expired - Fee Related JP3624301B2 (en) 1998-01-19 1998-01-19 Rack and pinion type steering device

Country Status (1)

Country Link
JP (1) JP3624301B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006264640A (en) * 2005-03-25 2006-10-05 Showa Corp Rack shaft, rack-pinion type steering device, and electric power steering device
JP2010254238A (en) * 2009-04-28 2010-11-11 Jtekt Corp Rack shaft supporting device and steering device for vehicle
JP2012011868A (en) * 2010-06-30 2012-01-19 Jtekt Corp Rack shaft supporting device and steering device for vehicle
EP2906459A4 (en) * 2012-09-30 2016-04-27 Saint Gobain Performance Plast Steering yoke assembly
DE102021211446A1 (en) 2021-10-11 2023-04-13 Zf Automotive Italia S.R.L. Device for pressing a rack onto a pinion

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006264640A (en) * 2005-03-25 2006-10-05 Showa Corp Rack shaft, rack-pinion type steering device, and electric power steering device
JP2010254238A (en) * 2009-04-28 2010-11-11 Jtekt Corp Rack shaft supporting device and steering device for vehicle
JP2012011868A (en) * 2010-06-30 2012-01-19 Jtekt Corp Rack shaft supporting device and steering device for vehicle
EP2906459A4 (en) * 2012-09-30 2016-04-27 Saint Gobain Performance Plast Steering yoke assembly
DE102021211446A1 (en) 2021-10-11 2023-04-13 Zf Automotive Italia S.R.L. Device for pressing a rack onto a pinion
US11754152B2 (en) 2021-10-11 2023-09-12 Zf Automotive Italia S.R.L. Apparatus for pressing a toothed rack against a pinion

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