JPH0573939B2 - - Google Patents
Info
- Publication number
- JPH0573939B2 JPH0573939B2 JP61204638A JP20463886A JPH0573939B2 JP H0573939 B2 JPH0573939 B2 JP H0573939B2 JP 61204638 A JP61204638 A JP 61204638A JP 20463886 A JP20463886 A JP 20463886A JP H0573939 B2 JPH0573939 B2 JP H0573939B2
- Authority
- JP
- Japan
- Prior art keywords
- rack gear
- yoke
- roller
- support device
- housing
- 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 - Lifetime
Links
- 230000008901 benefit Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
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
-
- 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
- F16H55/285—Special devices for taking up backlash using pressure yokes with rollers or balls to reduce friction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Transmission Devices (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明はラツクギヤの支持装置に関し、特に、
ラツク・ピニオンステアリング機構におけるラツ
クギヤの支持装置の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a rack gear support device, in particular,
This invention relates to an improvement of a rack gear support device in a rack and pinion steering mechanism.
従来技術
一般に、ステアリングホイールに接続されたピ
ニオンとこのピニオンに噛合うラツク歯を有し両
端に車輪が接続されたラツクギヤとから成るラツ
ク・ピニオンステアリング機構ではラツクギヤの
ピニオンとは反対側の面を支持する支持装置が設
けられている。Prior Art Generally, in a rack and pinion steering mechanism consisting of a pinion connected to a steering wheel and a rack gear having rack teeth that mesh with the pinion and connected to wheels at both ends, the surface of the rack gear opposite to the pinion is supported. A support device is provided.
このような支持装置は自動車の直進時では適度
の摩擦力をラツクギヤに与えてステアリングホイ
ールを適度に重くし、ステアリングしていくに従
つてその摩擦力を小さくしてステアリングホイー
ルを徐々に軽くするように設計されている。 This type of support device applies a moderate amount of frictional force to the rack gears when the car is moving straight, making the steering wheel moderately heavy, and as the vehicle continues to steer, that frictional force is reduced to gradually make the steering wheel lighter. It is designed to.
従来、この種の支持装置が第３図に示されてい
る。この支持装置はハウジング１とこのハウジン
グ内に設けられたヨーク２とこのヨークに設けら
れたローラ３とを有する。ヨーク２は一端にラツ
クギヤ４を受ける受面５を備え、このヨークは、
その受面５がラツクギヤに押圧するようにこのヨ
ークとハウジングとの間に配置されたばね６によ
つて付勢されている。ラツクギヤ４はラツク歯４
ａを有し、このラツク歯にはピニオン７が噛合つ
ている。このピニオン７の軸７ａは自動車のステ
アリングホイール（図示せず）に連結されてい
る。尚、ラツクギヤのローラが接触する面とラツ
クギヤの中心線４ｃとの間の距離ａは、ラツクギ
ヤの中心部よりラツクギヤの両端部の方が大きく
なるように設定されている。 A conventional support device of this type is shown in FIG. This support device has a housing 1, a yoke 2 provided within the housing, and a roller 3 provided on the yoke. The yoke 2 has a receiving surface 5 for receiving the rack gear 4 at one end, and this yoke is
The receiving surface 5 is biased by a spring 6 disposed between the yoke and the housing so as to press against the rack gear. Rack gear 4 has rack teeth 4
a, and a pinion 7 is meshed with this rack tooth. A shaft 7a of this pinion 7 is connected to a steering wheel (not shown) of an automobile. Note that the distance a between the surface of the rack gear that contacts the rollers and the center line 4c of the rack gear is set to be larger at both ends of the rack gear than at the center of the rack gear.
ローラ３は軸８に回転自在に支承され、この軸
は軸受体９に固定されている。この軸受体はヨー
クに設けられた凹孔１０内に摺動自在に収容され
且つハウジングとの間に設けられたばね１１によ
つてラツクギヤに向つて付勢されている。尚、符
号２ａは凹孔１０の開口の一部を閉じるようヨー
クに固定されたクロージヤー板を示す。 The roller 3 is rotatably supported by a shaft 8, and this shaft is fixed to a bearing body 9. This bearing body is slidably accommodated in a recessed hole 10 provided in the yoke, and is biased toward the rack gear by a spring 11 provided between it and the housing. Incidentally, reference numeral 2a indicates a closure plate fixed to the yoke so as to partially close the opening of the recessed hole 10.
この支持装置では自動車の直進時（ラツクギヤ
の中央位置）にはヨーク２の受面５およびローラ
３がラツクギヤに適度の圧力で接触し、ステアリ
ングホイールに適度の摩擦力を与えている。この
状態からステアリングホイールが一方向に回動さ
れると、ピニオン７を介してラツクギヤ４がその
中央位置から徐々にその軸方向に沿つて移動し、
ａ寸法の増大によつてローラ３を第３図で見て右
方向に押圧し、従つて軸受体９はばね１１に抗し
て右方向に移動してクロージヤー板２ａに当接
し、更に、ヨーク２を伴つて右方向にある距離移
動する。 In this support device, when the automobile is traveling straight (at the center position of the rack gear), the bearing surface 5 of the yoke 2 and the roller 3 contact the rack gear with an appropriate pressure, thereby imparting an appropriate frictional force to the steering wheel. When the steering wheel is rotated in one direction from this state, the rack gear 4 gradually moves from its center position along its axial direction via the pinion 7.
The increase in the dimension a pushes the roller 3 to the right as seen in FIG. Move a certain distance to the right with 2.
発明が解決しようとする問題点
しかしながら、かかる従来技術ではヨークと、
このヨークに取付けられる軸受体と、この軸受体
に取付けられるローラと、クロージヤー板と、２
つのばねとから成るために部品点数がきわめて多
く、このために製造コストが高いという欠点があ
つた。又、部品数が多いので第３図に示すように
ａ寸法の変化による軸受体とクロージヤー板との
間のｂ寸法の設定のばらつきが大きく、上記の作
動に際し効率が悪いという欠点があつた。又、ヨ
ークの受面とラツクギヤとの間、ヨークと軸受体
との間に存在する間隙によつて作動中音が発生す
るという欠点があつた。Problems to be Solved by the Invention However, in such prior art, the yoke and
a bearing body attached to this yoke, a roller attached to this bearing body, a closure plate;
Since it consists of two springs, the number of parts is extremely large, and this has the disadvantage of high manufacturing costs. Furthermore, since there are a large number of parts, as shown in FIG. 3, variations in the setting of dimension b between the bearing body and the closure plate due to changes in dimension a are large, resulting in poor efficiency in the above-mentioned operation. Another drawback is that noise is generated during operation due to gaps existing between the bearing surface of the yoke and the rack gear, and between the yoke and the bearing body.
本発明は上記の如き従来技術の欠点を改善した
ラツクギヤ支持装置を提供することにある。 SUMMARY OF THE INVENTION The object of the present invention is to provide a rack gear support device that overcomes the drawbacks of the prior art as described above.
問題点を解決するための手段
かかる目的を達成するために本発明ではヨーク
とローラとを弾性体を介して一体に接続したもの
である。Means for Solving the Problems In order to achieve the above object, in the present invention, a yoke and a roller are integrally connected via an elastic body.
実施例
以下、本発明の実施例を第１図および第２図を
参照して詳細に説明する。Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 and 2.
第１図において、符号１０はハウジングを示
し、このハウジング内にはヨーク１１が設けられ
ている。このヨークの一端にはラツクギヤ１２を
受ける受面１３が設けられている。 In FIG. 1, reference numeral 10 indicates a housing, and a yoke 11 is provided within this housing. A receiving surface 13 for receiving the rack gear 12 is provided at one end of the yoke.
ラツクギヤ１２はラツク歯１４を有し、このラ
ツク歯にはピニオン１５が噛合つている。ピニオ
ンはシヤフト１６を介して図示しないステアリン
グホイールに連結されている。ラツクギヤの両端
には上記従来技術と同様に操蛇すべき車輪が適当
なリンク装置（図示せず）を介して接続されてい
る。 The rack gear 12 has rack teeth 14, with which a pinion 15 meshes. The pinion is connected to a steering wheel (not shown) via a shaft 16. Wheels to be steered are connected to both ends of the rack gear via appropriate link devices (not shown), as in the prior art described above.
ヨーク１１は、受面１３とは反端側の端面とハ
ウジング１０との間に配置されたばね１７によつ
て受面１３がラツクギヤに常時適宜の圧力で接触
するように付勢されている。 The yoke 11 is biased by a spring 17 disposed between the end surface opposite to the receiving surface 13 and the housing 10 so that the receiving surface 13 is always in contact with the rack gear with an appropriate pressure.
ヨーク１１にはローラ２０が回転可能に支持さ
れている。このローラは軸２１に回転自在に支承
され、この軸の両端は弾性体２２を介してヨーク
１１に支承されている。この弾性体は例えばゴム
製の管状体から成り、軸２１の両端に夫々圧入さ
れ且つヨーク１１に設けられた凹孔の中に圧入さ
れている。この弾性体のばね特性は、第１図に示
すようにラツクギヤの中心からラツクギヤの背面
迄の距離ａ（この距離は第３図に示す従来技術の
場合と同様に設定されている）の変化量を△ａと
し、ばね１７の圧力をＰ１とすれば、第２図に示
すように変化量△ａに対応する弾性体の圧力をＰ
２とするとＰ２＞Ｐ１となるように設定されてい
る。 A roller 20 is rotatably supported on the yoke 11. This roller is rotatably supported by a shaft 21, and both ends of this shaft are supported by the yoke 11 via elastic bodies 22. This elastic body is made of a tubular body made of rubber, for example, and is press-fitted into each end of the shaft 21 and into a recess provided in the yoke 11. The spring characteristics of this elastic body are determined by the amount of change in the distance a from the center of the rack gear to the rear surface of the rack gear (this distance is set in the same way as in the prior art shown in Figure 3), as shown in Figure 1. If Δa is the pressure of the spring 17 and P1 is the pressure of the spring 17, then the pressure of the elastic body corresponding to the amount of change Δa is P as shown in FIG.
2, it is set so that P2>P1.
上記の如く弾性体２２とばね１７との圧力を設
定することによりラツクギヤをその軸方向に移動
中ヨークの受面とラツクギヤとの間のすべり接触
と、ローラとラツクギヤとの間のころがり接触と
が連続的に変化することができる。 By setting the pressure between the elastic body 22 and the spring 17 as described above, sliding contact between the receiving surface of the yoke and the rack gear and rolling contact between the roller and the rack gear can be prevented while the rack gear is moving in its axial direction. Can change continuously.
発明の効果
本発明によれば、ラツクギヤ支持のためのすべ
り接触ところがり接触とが連続的に変化するので
良好なステアリング性を得ることができる等のス
テアリング効率が向上し、且つステアリング系統
の良好な剛性が得られるという実益がある。又、
ローラをヨークに取付けられた弾性体に軸を介し
て支承するようにしたため、部品点数を少くする
ことができるので製造コストが安い。更に各部品
間の間隙部が少く従つて作動中の音の発生が未然
に防止できるという利点がある。Effects of the Invention According to the present invention, since the sliding contact and the rolling contact for supporting the rack gear change continuously, the steering efficiency is improved, such as obtaining good steering performance, and the steering system is improved. There is a practical benefit in that rigidity can be obtained. or,
Since the roller is supported via a shaft on an elastic body attached to a yoke, the number of parts can be reduced, and manufacturing costs are low. Furthermore, there is an advantage that there are few gaps between the parts, so that the generation of noise during operation can be prevented.
第１図は本発明に係るラツクギヤ支持装置の断
面図、第２図は弾性体のばね特性を示すグラフ、
第３図は従来のラツクギヤ支持装置の断面図であ
る。
１１…ハウジング、１２…ラツクギヤ、１３…
受面、１７…ばね、２０…ローラ。
FIG. 1 is a sectional view of the rack gear support device according to the present invention, and FIG. 2 is a graph showing the spring characteristics of the elastic body.
FIG. 3 is a sectional view of a conventional rack gear support device. 11...Housing, 12...Rack gear, 13...
Receiving surface, 17...spring, 20...roller.
Claims (1)
したり離反したりするように前記ハウジング内に
移動可能に設けられた支持手段とを備え、該支持
手段はラツクギヤを受ける受面を有するヨーク
と、該ヨークに回転自在に支持されたローラと、
前記ヨークをその受面がラツクギヤに接触するよ
うに押圧するばねとを有するラツクギヤ支持装置
において、前記ローラは軸に支承され、該軸は前
記ヨークに取付けられた弾性体に支承されている
ことを特徴とするラツクギヤ支持装置。1 A housing, and a support means movably provided within the housing so as to approach or move away from the rack gear to be supported, the support means comprising a yoke having a receiving surface for receiving the rack gear, and the yoke. a roller rotatably supported by the
In the rack gear support device having a spring that presses the yoke so that its receiving surface comes into contact with the rack gear, the roller is supported on a shaft, and the shaft is supported on an elastic body attached to the yoke. Characteristic rack gear support device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20463886A JPS6362956A (en) | 1986-08-30 | 1986-08-30 | Rack gear supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20463886A JPS6362956A (en) | 1986-08-30 | 1986-08-30 | Rack gear supporting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6362956A JPS6362956A (en) | 1988-03-19 |
| JPH0573939B2 true JPH0573939B2 (en) | 1993-10-15 |
Family
ID=16493791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20463886A Granted JPS6362956A (en) | 1986-08-30 | 1986-08-30 | Rack gear supporting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6362956A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100795045B1 (en) * | 2001-10-25 | 2008-01-15 | 주식회사 만도 | Gear box of steering system for vehicle |
| DE102004051494A1 (en) * | 2004-10-21 | 2006-04-27 | Thyssenkrupp Presta Steertec Gmbh | steering gear |
| KR101427440B1 (en) * | 2010-02-10 | 2014-08-08 | 주식회사 만도 | Rack Bar Supporting Device of Steering Apparatus for Vehicle |
| KR102203297B1 (en) * | 2014-10-29 | 2021-01-15 | 현대모비스 주식회사 | Steering device for vehicle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59184060A (en) * | 1983-03-31 | 1984-10-19 | Tokai T R W Kk | Supporter for rack and pinion |
-
1986
- 1986-08-30 JP JP20463886A patent/JPS6362956A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59184060A (en) * | 1983-03-31 | 1984-10-19 | Tokai T R W Kk | Supporter for rack and pinion |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6362956A (en) | 1988-03-19 |
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