JPS62181960A - All-wheel steering gear for vehicle - Google Patents
All-wheel steering gear for vehicleInfo
- Publication number
- JPS62181960A JPS62181960A JP2162586A JP2162586A JPS62181960A JP S62181960 A JPS62181960 A JP S62181960A JP 2162586 A JP2162586 A JP 2162586A JP 2162586 A JP2162586 A JP 2162586A JP S62181960 A JPS62181960 A JP S62181960A
- Authority
- JP
- Japan
- Prior art keywords
- steering
- wheel
- shaft
- vehicle
- neutral position
- 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
Links
- 230000007935 neutral effect Effects 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/06—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
- B62D7/14—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
- B62D7/15—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels
- B62D7/1518—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels comprising a mechanical interconnecting system between the steering control means of the different axles
- B62D7/1527—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels comprising a mechanical interconnecting system between the steering control means of the different axles comprising only mechanical parts, i.e. without assistance means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/06—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
- B62D7/14—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
- B62D7/15—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels
- B62D7/1518—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels comprising a mechanical interconnecting system between the steering control means of the different axles
- B62D7/1545—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels comprising a mechanical interconnecting system between the steering control means of the different axles provided with electrical assistance
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は車両の前後輪操舵装置に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a front and rear wheel steering device for a vehicle.
（従来の技術）
前輪操舵機構と後輪操舵機構とを機械的に連結した車両
の前後輪操舵装置は公知であり、特に高速時のハンドル
操作に対応する車両の応答性能を高めるために前輪と同
方向に後輪を転舵する場合、前輪のみ転舵する車両と比
べて車輪の転舵角は小さくなる。(Prior Art) A front and rear wheel steering system for a vehicle that mechanically connects a front wheel steering mechanism and a rear wheel steering mechanism is well known. When the rear wheels are steered in the same direction, the steering angle of the wheels becomes smaller compared to a vehicle where only the front wheels are steered.
（発明が解決しようとする問題点）
このように車輪の転舵角が小さくなると、路面反力によ
る車輪からのセルファライニングトルクが小さくなり、
ハンドルの操舵中立位置への復元力が小さいため、運転
者は操舵中立位置へのハンドル修正を行う必要が生じる
。(Problem to be Solved by the Invention) As the steering angle of the wheels becomes smaller in this way, the self-lining torque from the wheels due to the road reaction force becomes smaller.
Since the restoring force of the steering wheel to the neutral steering position is small, the driver is required to correct the steering wheel to the neutral steering position.
（問題点を解決するための手段）
斯かる問題点を解決すべく本発明は、前輪操舵機構と後
輪操舵機構とを機械的に連結した車両の前後輪操舵装置
において、ハンドル（１）から前輪（６）及び後輪（１
１）への操舵力伝達経路中に、ハンドル（１）を操舵中
立位置に付勢する復元装置（３０）を設けた。(Means for Solving the Problem) In order to solve the problem, the present invention provides a front and rear wheel steering system for a vehicle in which a front wheel steering mechanism and a rear wheel steering mechanism are mechanically connected. Front wheels (6) and rear wheels (1
A restoring device (30) for biasing the steering wheel (1) to the neutral steering position is provided in the steering force transmission path to the steering wheel (1).
例えば前記復元装置（３０）は操舵力を伝達する回転軸
（１Ｂ）、（２２） ｌに配設され、且つ該回転軸（１
１３）、（２２）を操舵中立位置に付勢する一対のスプ
リング（３３）・・・から成る。For example, the restoring device (30) is disposed on the rotating shaft (1B), (22) l that transmits the steering force, and
13) and (22) to the neutral steering position.
（作用）
ハンドル（１）の操作後は、復元装′ａ（３０）のスプ
リング（３３）・・・によって自動的にハンドル（１）
が操舵中立位置に戻されるため、運転者によるハンドル
修正操作を要することなく、前後輪操舵車両における操
舵後の直進方向復元性を向上することができる。(Function) After operating the handle (1), the spring (33) of the restoring device a (30) automatically returns the handle (1).
Since the steering wheel is returned to the neutral steering position, it is possible to improve the ability of the front and rear wheel steered vehicle to restore the straight-ahead direction after steering without requiring a steering wheel correction operation by the driver.
（実施例） 以下に添付図面を基に実施例を説明する。(Example) Examples will be described below based on the accompanying drawings.
第１図は前後輪操舵装置の概略システム図で、ハンドル
（１）のステアリング軸（２）はラックピニオン式のフ
ロントステアリングギヤボックス（３）内に組込まれた
ピニオン軸（４）に連結され、ピニオン軸（４）が噛合
するラー２り軸（５）の両端と、前輪（θ）、（θ）を
支承したナックルアーム（７）、（７）とはタイロッド
（８）、（８）にて連結される。更にラック軸（５）に
噛合する後輪操舵系への回転取出用ピニオン軸（９）が
設けられる。Fig. 1 is a schematic system diagram of the front and rear wheel steering device, in which the steering shaft (2) of the handle (1) is connected to a pinion shaft (4) incorporated in a rack and pinion type front steering gear box (3). Both ends of the roller shaft (5) with which the pinion shaft (4) meshes and the knuckle arms (7), (7) that support the front wheels (θ), (θ) are connected to the tie rods (8), (8). are connected. Furthermore, a pinion shaft (9) for taking out rotation to the rear wheel steering system is provided which meshes with the rack shaft (5).
一方、後輪（１１）、（１１）を支承したナックルアー
ム（１２）、（１２）はタイロッド（１３）、（１３）
を介してジヨイント軸（１４）の両端に連結され、ジヨ
イント軸（１４）はりヤステアリングギヤボックス（１
５）内にＸｔ込まれる。このギヤボックス（１５）内に
は回転入力軸（１６）が組込まれ、回転入力軸（１６）
に偏心軸（１７）が設けられ、偏心軸（１７）に係合し
て左右方向動のみを受ける係合部（１Ｂ）が前記ジヨイ
ント軸（１４）に設けられる。On the other hand, the knuckle arms (12), (12) supporting the rear wheels (11), (11) are connected to the tie rods (13), (13).
The joint shaft (14) is connected to both ends of the joint shaft (14) via the steering gear box (1
5) Xt is included in A rotation input shaft (16) is incorporated into this gear box (15).
An eccentric shaft (17) is provided on the joint shaft (14), and an engaging portion (1B) that engages with the eccentric shaft (17) and receives only lateral movement is provided on the joint shaft (14).
そして前記回転取出用ピニオン軸（θ）と回転入力軸（
１６）とは実施例では３木のリンケージ軸（２１）、（
２２） 、（２３）を介して連結される。Then, the rotation extraction pinion shaft (θ) and the rotation input shaft (
16) means three linkage shafts (21), (
22) and (23).
以上において、中間の第２リンケージ軸（２２）土に前
後一対のスプリング（３３） 、（３４）から成る復元
装置（３０）を配設する。In the above, a restoring device (30) consisting of a pair of front and rear springs (33) and (34) is disposed on the intermediate second linkage shaft (22).
具体的には、第２図に示すように第２リンケージ軸（２
２）は前後のポールベアリング（２４）、（２４）を介
してホルダ（２５）内に回転自在に支承され、ホルダ（
２５）はゴムマウン） （２Ｅｌ）を介して車体側ブラ
ケット（２７）に支持される。 Ｉｆｒかる第２リンケ
ージ軸（２２）の中央部局にセンタリングカラー（３１
）をビン（３２）にて固定し、このセンタリングカラー
（３１）に対し前後の軸周に一対のコイルスプリング（
３３）、（３４）を配設し、各コイルスプリング（３３
） 。Specifically, as shown in Fig. 2, the second linkage shaft (2
2) is rotatably supported in the holder (25) via front and rear pole bearings (24), (24), and
25) is supported by the vehicle body side bracket (27) via a rubber mount (2El). A centering collar (31) is attached to the center of the second linkage shaft (22).
) is fixed with a bottle (32), and a pair of coil springs (
33) and (34) are arranged, and each coil spring (33)
).
（３４）の前後端をセンタリングカラー（３１）とホル
ダ（２５）にそれぞれ係止する。The front and rear ends of (34) are respectively locked to the centering collar (31) and the holder (25).
斯かる復元装置（３０）を備えたので、ハンドル（１）
を操作して前後輪を所φの方向に転舵した後は１例えば
ハンドル左辺り後は前部のコイルスプリング（３３）に
より、またハンドル右切り後は後部のコイルスプリング
（３４）により第２リンケージ軸（２２）には操舵中立
位置への復元力が働くこととなる。この復元力は第１リ
ンケージ軸（２１）、回転取出用ピニオン軸（９）、ラ
ック軸（５）及びピニオン軸（４）を経てステアリング
軸（２）に伝わるため、運転者によるハンドル修正操作
を行わずとも、ハンドル（１）は自動的に操舵中立位置
に戻される。Since it is equipped with such a restoring device (30), the handle (1)
After steering the front and rear wheels in the direction of φ by operating the steering wheel, for example, after turning the steering wheel to the left, the coil spring (33) in the front part is used, and after turning the steering wheel to the right, the coil spring (34) in the rear part is used to turn the second wheel. A restoring force to the neutral steering position acts on the linkage shaft (22). This restoring force is transmitted to the steering shaft (2) via the first linkage shaft (21), rotation extraction pinion shaft (9), rack shaft (5), and pinion shaft (4), so that the driver cannot perform steering wheel correction operations. Even if this is not done, the steering wheel (1) is automatically returned to the neutral steering position.
第３図及び第４図は前後−・対のスパイラルスプリング
（３５）、（３Ｅｉ）から復元装２ｔ（３０）を構成し
た第２実施例を示し、各スパイラルスプリング（３５）
。Figures 3 and 4 show a second embodiment in which a restoration device 2t (30) is constructed from a pair of front and rear spiral springs (35) and (3Ei), and each spiral spring (35)
.
（３６）の内外端を第２リンケージ軸（２２）とホルダ
（２５）にそれぞれ係止した。The inner and outer ends of (36) were respectively locked to the second linkage shaft (22) and the holder (25).
第５図はりヤステアリングギヤボックス（１５）内の回
転入力軸（１６）上に復元装’′ｊ！＃、（３０）を配
設した第３実施例を示すもので、回転入力軸（！６）に
設けた偏心軸（１７）上にはポール（４１）・・・及び
ローラ（４２）・・・を介して筒部材（４３）が回転自
在に嵌合され、筒部材（４３）前部に設けたビニオン（
４４）はギヤボックス（１５）内に固定したリングギヤ
（４６）に噛合し、筒部材（４３）後部に設けた偏心カ
ム（４５）上にはポール（４７）・・・を介してスライ
ドヨーク（４８）が相対回転自在に嵌合される。このス
ライドヨーク（４８）は左右に垂直方向のテーパ面（４
８１） 、 （４８１）を備え、各テーパ面（４８１）
、（４８１）と、ジヨイント軸（１４）に固定した保合
部（１８）に備えられた同様のテーパ面（１８１）、（
１８１）との間にはローラ（４９）・・・が介装される
。そして回転入力軸（１Ｇ）は前後のポールベアリング
（５１）、（５１）を介してギヤボックス（１５）内に
回転自在に支承され、各ポールベアリング（５１）。Figure 5: Restoration equipment on the rotating input shaft (16) in the beam steering gear box (15)! This shows a third embodiment in which #, (30) are arranged, and on the eccentric shaft (17) provided on the rotation input shaft (!6), there are poles (41)... and rollers (42)... The cylinder member (43) is rotatably fitted through the binion (43) provided at the front part of the cylinder member (43).
44) meshes with a ring gear (46) fixed in the gear box (15), and a slide yoke (44) is mounted on an eccentric cam (45) provided at the rear of the cylindrical member (43) via a pole (47)... 48) are fitted so as to be relatively rotatable. This slide yoke (48) has vertically tapered surfaces (4
81), (481), each tapered surface (481)
, (481) and a similar tapered surface (181) provided on the retaining part (18) fixed to the joint shaft (14), (
A roller (49)... is interposed between the roller (181) and the roller (49). The rotary input shaft (1G) is rotatably supported within the gearbox (15) via front and rear pole bearings (51), (51), and each pole bearing (51).
（５１）の外輪間にはギヤボックス（１５）と嵌合する
回転ストッパ（５３）を備えるディスタンスカラー（５
２）か介設される。斯かる回転入力軸（１６）の中央部
−１−に前記第１実施例と同様にセンタリングカラー（
３１）を固定し、その前後にコイルスプリング（３３）
、（３４）を配し、各コイルスプリング（３３） 。A distance collar (51) is provided with a rotation stopper (53) that fits with the gear box (15) between the outer rings of the distance collar (51).
2) Intervention is made. As in the first embodiment, a centering collar (
31) and coil springs (33) in front and behind it.
, (34), and each coil spring (33).
（３４）の前後端をセンタリングカラー（３１）とディ
スタンスカラー（５２）にそれぞれ係止した。The front and rear ends of (34) were respectively locked to the centering collar (31) and distance collar (52).
このようにリャステアリングギヤボックス（１５）内に
復元装置（３０）を備えれば、組立ライン上及びメンテ
ナンス時において、後輪操舵機構は常に操舵中ケ状態に
保持されるので１組付作業時にお°ける中立用し、芯出
し等が容易になるという効果も併せ持つ。If the restoring device (30) is provided in the rear steering gear box (15) in this way, the rear wheel steering mechanism is always maintained in the steering state on the assembly line and during maintenance. It also has the effect of making centering easier, as it can be used as a neutral for heating.
尚、ステアリング軸（２）や、これに連結されるピニオ
ン軸（４）に同様の復元装置を配しても、ハンドル戻し
効果が得られることは勿論である。It goes without saying that the steering wheel returning effect can also be obtained by disposing a similar restoring device on the steering shaft (2) and the pinion shaft (4) connected thereto.
（発明の効果）
以上のように本発明によれば、特に前後輪の操舵機構を
機械的に連結した車両において、ハンドル操作後に運転
者による修正操作を要することなく、復元装置によって
自動的にハンドルを操舵中ケ位置に戻すことができ、操
舵後の直進方向復元性を向」−できる・(Effects of the Invention) As described above, according to the present invention, especially in a vehicle in which the front and rear wheel steering mechanisms are mechanically connected, the restoring device automatically handles the steering wheel without requiring any corrective operation by the driver after steering wheel operation. can be returned to the steering position, improving straight-line direction recovery after steering.
第１図は前後輪操舵装置の概略システム図、第２図は第
１実施例の復元装置を示す第２リンケージ軸部分の横断
面図、第３図は第２実施例を示す同様の横断面図、第４
図は第３図■−■線断面図、第５図は第３実施例を示す
リヤステアリングギヤボックス部分の横断面図である。
尚、図面中、（１）はハンドル、（６）は前輪、（８）
は回転取出用ピニオン軸、（１１）は後輪、（１６）は
回転入力軸、（２１）、（２２）、（２３）はリンケー
ジ軸。
（３０）は復元装置、（３１）はセンタリングカラー、
（３３）、（３４）、（３５）、（３６）はスプリング
である。
第３図Fig. 1 is a schematic system diagram of the front and rear wheel steering device, Fig. 2 is a cross-sectional view of the second linkage shaft portion showing the restoring device of the first embodiment, and Fig. 3 is a similar cross-sectional view showing the second embodiment. Figure, 4th
The drawings are a cross-sectional view taken along the line 3--2 in FIG. 3, and FIG. 5 is a cross-sectional view of the rear steering gear box portion showing the third embodiment. In addition, in the drawing, (1) is the handle, (6) is the front wheel, (8)
(11) is the rear wheel, (16) is the rotation input shaft, and (21), (22), (23) are the linkage shafts. (30) is a restoring device, (31) is a centering collar,
(33), (34), (35), and (36) are springs. Figure 3
Claims (2)
た車両の前後輪操舵装置において、 ハンドルから前輪及び後輪への操舵力伝達経路中に、ハ
ンドルを操舵中立位置に付勢する復元装置を設けたこと
を特徴とする車両の前後輪操舵装置。(1) In a vehicle front and rear wheel steering system that mechanically connects a front wheel steering mechanism and a rear wheel steering mechanism, the steering wheel is biased to a neutral steering position during the steering force transmission path from the steering wheel to the front wheels and rear wheels. A front and rear wheel steering device for a vehicle, characterized by being provided with a restoring device.
され、且つ該回転軸を操舵中立位置に付勢する一対のス
プリングから成る特許請求の範囲第１項記載の車両の前
後輪操舵装置。(2) The restoring device is disposed on a rotating shaft that transmits steering force, and comprises a pair of springs that urges the rotating shaft to a neutral steering position. Steering device.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2162586A JPH0676066B2 (en) | 1986-02-03 | 1986-02-03 | Front and rear wheel steering system |
| US07/010,177 US4758012A (en) | 1986-02-03 | 1987-02-02 | Steering system for a vehicle with steerable front and rear wheels |
| FR8701199A FR2593766A1 (en) | 1986-02-03 | 1987-02-02 | STEERING SYSTEM FOR FRONT AND REAR ROLLING WHEELED VEHICLES |
| GB8702283A GB2185947B (en) | 1986-02-03 | 1987-02-02 | Steering system for a vehicle with steerable front and rear wheels |
| DE3703187A DE3703187C2 (en) | 1986-02-03 | 1987-02-03 | Device for steering a steerable front wheels and steerable rear wheels vehicle |
| US07/088,908 US4792007A (en) | 1986-02-03 | 1987-08-24 | Mechanism for steering front and rear wheels of four-wheel vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2162586A JPH0676066B2 (en) | 1986-02-03 | 1986-02-03 | Front and rear wheel steering system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62181960A true JPS62181960A (en) | 1987-08-10 |
| JPH0676066B2 JPH0676066B2 (en) | 1994-09-28 |
Family
ID=12060244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2162586A Expired - Lifetime JPH0676066B2 (en) | 1986-02-03 | 1986-02-03 | Front and rear wheel steering system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0676066B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0338279U (en) * | 1989-08-28 | 1991-04-12 | ||
| US5238257A (en) * | 1991-05-31 | 1993-08-24 | Koyo Seiko Co., Ltd. | Rear wheel steering device |
| JPH0642541A (en) * | 1992-07-24 | 1994-02-15 | Sankyo Seiki Mfg Co Ltd | Rotation transmitting device |
| US6131689A (en) * | 1998-12-11 | 2000-10-17 | Deere & Company | All-wheel-steer biasing mechanism |
| US6694839B1 (en) * | 1999-04-19 | 2004-02-24 | Skf France | Neutral point setting for steering wheel in particular |
| US7383916B2 (en) | 2005-01-20 | 2008-06-10 | Deere & Company | All wheel steering with torque shaft linkage |
-
1986
- 1986-02-03 JP JP2162586A patent/JPH0676066B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0338279U (en) * | 1989-08-28 | 1991-04-12 | ||
| US5238257A (en) * | 1991-05-31 | 1993-08-24 | Koyo Seiko Co., Ltd. | Rear wheel steering device |
| JPH0642541A (en) * | 1992-07-24 | 1994-02-15 | Sankyo Seiki Mfg Co Ltd | Rotation transmitting device |
| US6131689A (en) * | 1998-12-11 | 2000-10-17 | Deere & Company | All-wheel-steer biasing mechanism |
| US6694839B1 (en) * | 1999-04-19 | 2004-02-24 | Skf France | Neutral point setting for steering wheel in particular |
| US7383916B2 (en) | 2005-01-20 | 2008-06-10 | Deere & Company | All wheel steering with torque shaft linkage |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0676066B2 (en) | 1994-09-28 |
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