JP2910160B2 - Automatic rear wheel steering mechanism for vehicles - Google Patents

Automatic rear wheel steering mechanism for vehicles

Info

Publication number
JP2910160B2
JP2910160B2 JP13621890A JP13621890A JP2910160B2 JP 2910160 B2 JP2910160 B2 JP 2910160B2 JP 13621890 A JP13621890 A JP 13621890A JP 13621890 A JP13621890 A JP 13621890A JP 2910160 B2 JP2910160 B2 JP 2910160B2
Authority
JP
Japan
Prior art keywords
vehicle
rear wheel
wheel
rotating body
steering mechanism
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
Application number
JP13621890A
Other languages
Japanese (ja)
Other versions
JPH0431179A (en
Inventor
久幸 高橋
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.)
Isuzu Motors Ltd
Original Assignee
Isuzu Motors 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 Isuzu Motors Ltd filed Critical Isuzu Motors Ltd
Priority to JP13621890A priority Critical patent/JP2910160B2/en
Publication of JPH0431179A publication Critical patent/JPH0431179A/en
Application granted granted Critical
Publication of JP2910160B2 publication Critical patent/JP2910160B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は後2軸車両の自動後輪操舵機構に関するもの
である。
Description: TECHNICAL FIELD The present invention relates to an automatic rear wheel steering mechanism for a rear two-axle vehicle.

[従来の技術] 普通の4輪車両は旋回走行時ハンドルにより操舵され
た前輪の向きに垂直な直線と、直進方向に固定された後
輪の向きに垂直な2直線との交点付近を旋回中心として
円滑に旋回できる。
[Prior Art] In a normal four-wheeled vehicle, the turning center is located near the intersection of a straight line perpendicular to the direction of the front wheels steered by a steering wheel during turning and two straight lines perpendicular to the directions of the rear wheels fixed in the straight traveling direction. Can be turned smoothly.

しかし、後2軸車両の場合は、後輪の向きが全て直進
方向に固定されていると、前輪の向きに垂直な直線と各
後輪の向きに垂直な直線との交点が複数になり、各交点
の間隔が大きいと、車両の旋回走行に伴う後輪の接地点
と後輪の向きとのずれが大きくなり、車両は横滑りしな
がら旋回する。このため、後軸の軸間距離が短い車両で
は、旋回走行に伴う後輪の横滑り量が過大となり、後輪
(タイヤ)の摩耗が顕著になるという問題がある。
However, in the case of a rear two-axle vehicle, if all the directions of the rear wheels are fixed in the straight traveling direction, there are a plurality of intersections of a straight line perpendicular to the front wheel direction and a straight line perpendicular to each rear wheel direction, If the interval between the intersections is large, the deviation between the contact point of the rear wheel and the direction of the rear wheel accompanying the turning traveling of the vehicle becomes large, and the vehicle turns while skidding. For this reason, in a vehicle in which the distance between the rear axles is short, there is a problem in that the amount of sideslip of the rear wheels accompanying the cornering becomes excessive, and the wear of the rear wheels (tires) becomes remarkable.

後輪の横滑りを解消するには、前輪の向きに対応して
後輪を操舵することが好ましいが、後輪にハンドルと連
動する操舵機構を備えることは、重量増加や大幅なコス
ト増加を招くので得策ではない。
In order to eliminate the side slip of the rear wheel, it is preferable to steer the rear wheel in accordance with the direction of the front wheel, but providing a steering mechanism linked to the steering wheel on the rear wheel causes an increase in weight and a significant increase in cost. Not so good.

そこで、複数の後軸のうち1軸を残して他の後軸の後
輪を操舵可能にし、後輪の操舵軸線(キングピン)の対
地交点が後輪の接地点の少し前方に位置するように構成
することにより、後輪に特別の後輪操舵機構を設けなく
ても、車両の旋回走行時後輪に横滑りを強制する力が作
用すると、後輪の操舵軸線の対地交点と後輪の接地点と
の前後方向の偏差(トレール量)により、後輪の接地点
に作用する横荷重が後輪の操舵軸線に関するモーメント
として作用し、後輪が横滑りを生じないような向きに自
動的に操舵され、後輪に横滑りがない円滑な旋回走行が
得られる。
Therefore, the rear wheels of the other rear axles can be steered while leaving one of the plurality of rear axles, so that the intersection of the steering axis (king pin) of the rear wheels with the ground is located slightly ahead of the ground contact point of the rear wheels. With this configuration, even if a special rear-wheel steering mechanism is not provided for the rear wheels, if the force that forces side slip is applied to the rear wheels during turning of the vehicle, the intersection of the rear-wheel steering axis with the ground and the rear wheels will be in contact. The lateral load acting on the ground contact point of the rear wheels acts as a moment about the steering axis of the rear wheels due to the deviation in the front-rear direction from the point (the trail amount), and the rear wheels are automatically steered in a direction that does not cause sideslip. As a result, a smooth turning travel without side slip on the rear wheels can be obtained.

しかし、上述の自動後輪操舵機構(セルフステア機
構)をもつ車両の場合、車両が後進しようとすると、後
輸の操舵軸線の対地交点に対し、後輪の接地点が後輪の
進行方向側に位置することとなり、後輪に作用する横荷
重による後輪の操舵軸線に関するモーメントが不安定な
ものとなり、後輸の向きが車両の直進方向から僅かにず
れても、そのずれが拡大してしまう結果となり、最悪の
場合後進不能に陥るという不具合がある。このため、特
開昭60-50072号公報に開示される自動後輪操舵機構で
は、変速機が後進段にシフトされると、後輪の向きを直
進位置に固定するロック機構を設けている。
However, in the case of a vehicle having the above-described automatic rear-wheel steering mechanism (self-steering mechanism), when the vehicle tries to move backward, the ground contact point of the rear wheel with respect to the intersection of the steering axis of the rear-wheel is on the side of the rear wheel traveling direction. And the moment about the steering axis of the rear wheel due to the lateral load acting on the rear wheel becomes unstable, and even if the direction of the rear transfer slightly deviates from the straight running direction of the vehicle, the deviation increases. As a result, there is a problem that in the worst case, the vehicle cannot go backward. For this reason, the automatic rear wheel steering mechanism disclosed in Japanese Patent Application Laid-Open No. 60-50072 is provided with a lock mechanism for fixing the direction of the rear wheels to the straight traveling position when the transmission is shifted to the reverse gear.

しかし、上述の自動後輪操舵機構を備えた車両では、
後進時自動後輪操舵機能がロックされるので、車輪の横
滑りをなくす作用が減殺されるばかりでなく、ハンドル
の操作量が同じでも前進時と後進時で車両の旋回軌跡が
異なるために、狭い車庫などで前進と後進を繰り返す
と、車両の位置が次第に横にずれ、車両を元の位置へ戻
すのが難しくなる。
However, in a vehicle having the above-described automatic rear wheel steering mechanism,
Since the automatic rear wheel steering function is locked when moving backward, not only the effect of eliminating the side slip of the wheels is reduced, but also because the turning trajectory of the vehicle is different between when moving forward and when moving backward even with the same operation amount of the steering wheel, it is narrow When the forward and backward movements are repeated in a garage or the like, the position of the vehicle gradually shifts to the side, and it becomes difficult to return the vehicle to the original position.

[発明が解決しようとする問題点] 本発明の目的は上述の問題に鑑み、前進時と後進時の
旋回軌跡の相違をなくし、前進と後進の繰り返しによる
車両の横ずれを解消する、車両の自動後輪操舵機構を提
供することにある。
[Problems to be Solved by the Invention] In view of the above-described problems, an object of the present invention is to eliminate the difference in turning trajectory between forward and reverse travels and eliminate lateral displacement of the vehicle due to repeated forward and reverse travel. It is to provide a rear wheel steering mechanism.

[問題を解決するための手段] 上記目的を達成するために、本発明の構成は駆動輪と
従動輪を有する後2軸車両において、後車軸ケースの両
端部に回動体を後車軸ケースと同軸に回動可能に支持
し、各従動輪を支持するナツクルをキングピンにより前
記回動体に支持し、前記回動体を回動して前記キングピ
ンの前後の傾きを車両の走行方向に応じて変更するアク
チユエータを車体側に備えたことを特徴とする。
Means for Solving the Problems In order to achieve the above object, in the configuration of the present invention, in a rear two-axle vehicle having a driving wheel and a driven wheel, a rotating body is provided at both ends of a rear axle case coaxially with the rear axle case. An actuator that rotatably supports the driven wheel, supports a knuckle that supports each driven wheel by a kingpin on the rotating body, and rotates the rotating body to change the front and rear inclination of the kingpin according to the traveling direction of the vehicle. Is provided on the vehicle body side.

[作用] 変速機が前進段にシフトされている時、アクチユエー
タにより回動体が後車軸ケースに対し回動されてキング
ピンが後方へ傾けられるので、車両の旋回走行に伴つて
後輪に横滑りを生じさせるような横荷重が作用すると、
後輪の向きがキングピンを中心として自動的に操舵さ
れ、後輪に横滑りがない円滑な旋回走行が得られる。
変速機を後進段にシフトすると、アクチユエータにより
回動体が逆方向に回動されてキングピンが前方へ傾けら
れるので、後進時にも前進時と同様に旋回走行に伴つて
自動後輪操舵作用が働く。
[Operation] When the transmission is shifted to the forward gear, the rotating body is rotated with respect to the rear axle case by the actuator, and the kingpin is tilted rearward. When a lateral load is applied that causes
The direction of the rear wheel is automatically steered around the kingpin, and a smooth turning travel without side slip on the rear wheel is obtained.
When the transmission is shifted to the reverse gear, the rotary body is rotated in the reverse direction by the actuator, and the kingpin is tilted forward, so that the automatic rear wheel steering action also works when the vehicle reverses, as in the case of forward running.

[発明の実施例] 第6図は本発明による自動後輪操舵機構を備えた後2
軸車両の平面図である。前輪21を支持するナツクル23
は、上下方向のキングピン22により前車軸ケース34の両
端部に支持され、前車軸ケース34は公知の懸架ばねによ
り車体に支持される。ハンドルにより操舵軸25を例えば
右へ回転すると、操向歯車機構26の出力軸27の腕が揺動
され、ドラグリンク28を介して右側のナツクル23がキン
グピン22を中心として時計方向へ回動され、タイロツド
24で連結された左右の前輪21が右へ偏向される。
[Embodiment of the Invention] FIG. 6 is a rear view of a rear wheel equipped with an automatic rear wheel steering mechanism according to the present invention.
It is a top view of an axle vehicle. Knuckle 23 supporting front wheel 21
Are supported at both ends of a front axle case 34 by vertical king pins 22. The front axle case 34 is supported on the vehicle body by a known suspension spring. When the steering shaft 25 is rotated to the right by the handle, for example, the arm of the output shaft 27 of the steering gear mechanism 26 is swung, and the right nut 23 is rotated clockwise about the king pin 22 via the drag link 28. , Thai rod
The left and right front wheels 21 connected by 24 are deflected to the right.

前後輪33の後車軸32は後車軸ケース31に支持される。
機関により駆動される推進軸29の回転が差動装置30を経
て後軸32へ伝達される。後後輪18の後車軸12は上下方向
のキングピン20により回動体3により支持され、回動体
3は後車軸ケース13の両端部に回動可能に支持される。
キングピン20は回動体3の後車軸ケース13に対する回動
により前後に傾けられる。回動体3は車体(好ましくは
後車軸ケース13)と回動体3との間に連結したアクチユ
エータ40により回動される。第6図には理解を容易にす
るために、キングピン22,20が車輪の幅方向中心からず
れた位置に図示されている。
The rear axle 32 of the front and rear wheels 33 is supported by the rear axle case 31.
The rotation of the propulsion shaft 29 driven by the engine is transmitted to the rear shaft 32 via the differential device 30. The rear axle 12 of the rear rear wheel 18 is supported by a rotating body 3 by a vertical king pin 20, and the rotating body 3 is rotatably supported by both ends of a rear axle case 13.
The king pin 20 is tilted back and forth by the rotation of the rotating body 3 with respect to the rear axle case 13. The rotating body 3 is rotated by an actuator 40 connected between the vehicle body (preferably, the rear axle case 13) and the rotating body 3. In FIG. 6, for ease of understanding, the king pins 22, 20 are shown at positions offset from the center in the width direction of the wheel.

第1図は本発明による車両の自動後輪操舵機構の背面
断面図、第2図は同分解斜視図、第3図は同要部の側面
図である。本発明は複数の後軸のうち1つ(好ましくは
駆動される後輪を支持する後軸)を除く他の後軸につい
て、前・後進に対応して後輪のナツクルを支持するキン
グピンの傾き角(キヤスタ角)を加減することにより、
旋回走行に伴う後輪の横滑りをなくすものである。この
ため、1つの後軸を除く他の後軸を支持する後車軸ケー
ス13の両端部に、回動体3が回動可能に支持される。具
体的には筒形の後車軸ケース13の両端部に軸部13aが形
成され、軸部13aが回動体3の軸穴6へ相対回動可能に
嵌合され、かつ外れないように軸部13aの端部にナット
5が締結される。しかし、回動体3はリヤアクスル13の
端部に直接回動可能に外嵌支持してもよい。
FIG. 1 is a rear sectional view of an automatic rear wheel steering mechanism of a vehicle according to the present invention, FIG. 2 is an exploded perspective view of the same, and FIG. 3 is a side view of essential parts of the same. The present invention relates to a tilt of a kingpin for supporting a knuckle of a rear wheel corresponding to a forward / reverse movement of a rear shaft except one of a plurality of rear shafts (preferably, a rear shaft for supporting a driven rear wheel). By adjusting the angle (caster angle),
This is to eliminate the side slip of the rear wheel accompanying the cornering. Therefore, the rotating body 3 is rotatably supported at both ends of the rear axle case 13 that supports the other rear shaft except one rear shaft. Specifically, shaft portions 13a are formed at both ends of the cylindrical rear axle case 13, and the shaft portions 13a are fitted into the shaft holes 6 of the rotating body 3 so as to be relatively rotatable, and are not detached. The nut 5 is fastened to the end of 13a. However, the rotating body 3 may be directly fitted to the end of the rear axle 13 so as to be rotatable.

回動体3に径外向へ延びる1対の腕4が一体に形成さ
れ、各腕4に同軸に並ぶピン穴4aが形成される。後輪18
を支持する後軸12と一体のコ字形をなすナツクル2が上
下1対の腕4の端部に重ね合され、かつキングピン20に
より回動体3に対し揺動可能に支持される。したがつ
て、後軸12に支持された後輪18(第6図)は、キングピ
ン20を中心として操舵可能とされる。
A pair of arms 4 extending radially outward are formed integrally with the rotating body 3, and pin holes 4 a coaxially arranged in each arm 4 are formed. Rear wheel 18
A knuckle 2 having a U-shape integral with a rear shaft 12 for supporting the upper and lower arms is superposed on the ends of a pair of upper and lower arms 4, and is swingably supported on the rotating body 3 by a king pin 20. Accordingly, the rear wheel 18 (FIG. 6) supported on the rear shaft 12 can be steered about the kingpin 20.

キングピン20の前後の傾きを規制するために、回動体
3から軸方向に衝合片8が、後車軸ケース13の端部に結
合したフランジ9の周縁部の切欠9aへ突出され、衝合片
8の端部にレバー10が結合される。第3図に示すよう
に、レバー10は切欠9aの内部で、車両の前・後進に対応
して後方へ傾いた状態と前方へ傾いた状態とに切り換え
られる。
In order to regulate the inclination of the king pin 20 before and after, the abutting piece 8 is axially projected from the rotating body 3 into a notch 9a on the peripheral edge of the flange 9 connected to the end of the rear axle case 13, and A lever 10 is connected to the end of the lever 8. As shown in FIG. 3, the lever 10 is switched inside the notch 9a between a state in which the lever is tilted rearward and a state in which it is tilted forward in accordance with the forward / reverse travel of the vehicle.

第4図に示すように、レバー10を介して回動体3を回
動するために、レバー10と車体17(好ましくは後車軸ケ
ース13)との間にアクチユエータ40が連結される。アク
チユエータ40はシリンダ35をピン19により車体17に連結
される一方、シリンダ35に嵌装したピストン36から外部
へ突出するロツド37をピン38によりレバー10に連結され
る。
As shown in FIG. 4, an actuator 40 is connected between the lever 10 and the vehicle body 17 (preferably, the rear axle case 13) to rotate the rotating body 3 via the lever 10. The actuator 40 has a cylinder 35 connected to the vehicle body 17 by a pin 19, and a rod 37 protruding outside from a piston 36 fitted to the cylinder 35 is connected to the lever 10 by a pin 38.

次に、本発明による車両の自動後輪操舵機構の作動に
ついて説明する。第4図において、車両の前進時、アク
チユエータ40のピストン36は空気圧または油圧により後
方(第4図において右方)へ押され、回動体3が時計方
向へ回動され、キングピン20が後方へ傾けられる。した
がつて、キングピン20の路面39との交点aは、後輪18の
路面39との接地点bよりもトレール量sだけ前方(第4
図において左方)に位置する。
Next, the operation of the automatic rear wheel steering mechanism of the vehicle according to the present invention will be described. In FIG. 4, when the vehicle moves forward, the piston 36 of the actuator 40 is pushed rearward (to the right in FIG. 4) by pneumatic or hydraulic pressure, the rotating body 3 is rotated clockwise, and the kingpin 20 is tilted backward. Can be Therefore, the intersection a of the king pin 20 with the road surface 39 is ahead of the ground point b of the rear wheel 18 with the road surface 39 by the trail amount s (the fourth position).
(Left side in the figure).

車両の前進旋回走行では、キングピン20の傾き角(キ
ヤスタ角)αにより、後輪18の接地点bに作用する横荷
重(後輪に横滑りを強制する力)が、後輪18にキングピ
ン20を中心とするモーメントとして作用するので、後輪
18が自動的にキングピン20を中心として操舵され、後輪
18の向きが車両の旋回軌跡に対して横滑りを生じないよ
うな向きに変化する。
In the forward turning operation of the vehicle, the lateral load (force for forcing the rear wheel to slide sideways) acting on the contact point b of the rear wheel 18 causes the king pin 20 to be applied to the rear wheel 18 due to the inclination angle (caster angle) α of the king pin 20. Acts as the center moment, so the rear wheel
18 is automatically steered around the kingpin 20 and the rear wheels
The direction of 18 changes to a direction that does not cause sideslip with respect to the turning locus of the vehicle.

一方、車両の後進時、アクチユエータ40のピストン36
は前方へ押され、キングピン20が前方へ傾けられる。後
輪18に横滑りを強制する力は、後輪18をキングピン20を
中心として回動させるので、後輸18が自動的に横滑りを
生じないような向きになり、後輪18に横滑りがない円滑
な旋回走行が得られる。
On the other hand, when the vehicle moves backward, the piston 36 of the actuator 40
Is pushed forward, and the king pin 20 is tilted forward. The force for forcing the rear wheel 18 to skid rotates the rear wheel 18 about the kingpin 20, so that the rear transfer 18 does not automatically cause a skid, and the rear wheel 18 has no skid. Turning performance is obtained.

第5図は本発明による自動後輪操舵機構の変更実施例
を示す背面断面図である。後車軸ケース13の両端軸部13
aに筒形の回動体3が回動可能に支持され、回動体3に
ナツクル2がキングピン20により操舵可能に支持され
る。左右の回動体3から径外方へ突出する突片3aが軸16
により一体的に結合され、左側の回動体3の外周壁に形
成した部分歯車41にウオーム歯車42が噛み合される。ウ
オーム歯車42が後車軸ケース13に支持したアクチユエー
タとしての電動機(図示せず)により正逆回転される
と、左右のキングピン20の前後の傾きが変更される。
FIG. 5 is a rear sectional view showing a modified embodiment of the automatic rear wheel steering mechanism according to the present invention. Both end shaft portions 13 of rear axle case 13
A cylindrical rotating body 3 is rotatably supported by a, and the knuckle 2 is supported by the rotating body 3 by a kingpin 20 so as to be steerable. A protruding piece 3a projecting radially outward from the left and right rotating bodies 3 is a shaft 16
The worm gear 42 meshes with the partial gear 41 formed on the outer peripheral wall of the left rotating body 3. When the worm gear 42 is rotated forward and backward by an electric motor (not shown) as an actuator supported on the rear axle case 13, the front and rear inclinations of the left and right king pins 20 are changed.

[発明の効果] 本発明は上述のように、駆動輪と従動輪を有する後2
軸車両において、後車軸ケースの両端部に回動体を後車
軸ケースと同軸に回動可能に支持し、各従動輪を支持す
るナツクルをキングピンにより前記回動体に支持し、前
記回動体を回動して前記キングピンの前後の傾きを車両
の走行方向に応じて変更するアクチユエータを車体側に
備えたから、車両の旋回走行時前輪が操舵されると、前
進と後進とに拘らず、旋回走行に伴つて後輪に横滑りを
生じさせるような横荷重が作用すると、後輪の向きがキ
ングピンを中心として自動的に変化するので、後輪に横
滑りがない円滑な旋回走行が得られる。
[Effects of the Invention] As described above, the present invention has a rear wheel having a driving wheel and a driven wheel.
In an axle vehicle, a rotating body is supported at both ends of a rear axle case so as to be rotatable coaxially with the rear axle case, and a knuckle supporting each driven wheel is supported by the rotating body with a kingpin, and the rotating body is rotated. The vehicle body is provided with an actuator for changing the front and rear inclination of the kingpin in accordance with the traveling direction of the vehicle. Therefore, when the front wheels are steered during the traveling of the vehicle, regardless of whether the vehicle is traveling forward or backward, the vehicle is driven along with the traveling. When a lateral load that causes a side slip on the rear wheel is applied, the direction of the rear wheel automatically changes around the kingpin, so that a smooth turning travel without a side slip on the rear wheel can be obtained.

後車軸ケースに支持した回動体を、車両の進行方向に
対応してアクチユエータにより回動させて、後輪のナツ
クルを支持するキングピンの前後の傾きを切り換えるも
のであるから、構成が非常に簡単であり、安価に提供で
きる。
The rotating body supported by the rear axle case is rotated by an actuator in accordance with the traveling direction of the vehicle, and the front and rear inclinations of the kingpin that supports the rear wheel knuckle are switched, so the configuration is very simple. Yes, and can be provided at low cost.

車両の前・後進時、後輪のナツクルを支持するキング
ピンの前後の傾きを切り換えることにより、前進時と後
進時の旋回軌跡に相違がなくなり、前進と後進の繰り返
しによる車両の横ずれが解消される。
By switching the front and rear inclinations of the kingpin that supports the knuckle of the rear wheel when the vehicle is moving forward and backward, there is no difference in the turning trajectory between the forward and backward traveling, and the lateral displacement of the vehicle due to repeated forward and backward traveling is eliminated. .

回動体を回動するアクチユエータを後車軸ケースに配
設できるので、いかなる懸架方式の後2軸車両にも採用
できる。
Since the actuator for rotating the rotating body can be disposed on the rear axle case, it can be applied to any suspension type rear two-axle vehicle.

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

第1図は本発明に係る自動後輪操舵機構の背面断面図、
第2図は同分解斜視図、第3図は後車軸ケースのフラン
ジとレバーとの関係を示す側面図、第4図は自動後輪操
舵機構の側面図、第5図は本発明の他の実施例に係る自
動後輪操舵機構の背面断面図、第6図は本発明による自
動後輪操舵機構を備えた後2軸車両の概略構成を示す平
面図である。 2:ナツクル、3:回動体、12:後軸、13:後車軸ケース、1
8:後輸、20:キングピン、40:アクチユエータ
FIG. 1 is a rear sectional view of an automatic rear wheel steering mechanism according to the present invention,
FIG. 2 is an exploded perspective view of the same, FIG. 3 is a side view showing a relationship between a flange of a rear axle case and a lever, FIG. 4 is a side view of an automatic rear wheel steering mechanism, and FIG. FIG. 6 is a rear sectional view of the automatic rear wheel steering mechanism according to the embodiment, and FIG. 6 is a plan view showing a schematic configuration of a rear two-axis vehicle provided with the automatic rear wheel steering mechanism according to the present invention. 2: nutshell, 3: rotating body, 12: rear axle, 13: rear axle case, 1
8: Goyo, 20: Kingpin, 40: Actuator

フロントページの続き (58)調査した分野(Int.Cl.6,DB名) B62D 7/18 B62D 7/14 Continuation of the front page (58) Field surveyed (Int.Cl. 6 , DB name) B62D 7/18 B62D 7/14

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】駆動輪と従動輪を有する後2軸車両におい
て、後車軸ケースの両端部に回動体を後車軸ケースと同
軸に回動可能に支持し、各従動輪を支持するナツクルを
キングピンにより前記回動体に支持し、前記回動体を回
動して前記キングピンの前後の傾きを車両の走行方向に
応じて変更するアクチユエータを車体側に備えたことを
特徴とする、車両の自動後輪操舵機構。
In a rear two-axle vehicle having a driving wheel and a driven wheel, a rotating body is supported at both ends of a rear axle case so as to be rotatable coaxially with the rear axle case, and a nut supporting each driven wheel is a kingpin. An automatic rear wheel of the vehicle, wherein the actuator is supported on the rotating body, and an actuator that rotates the rotating body to change the front and rear inclination of the king pin in accordance with the traveling direction of the vehicle is provided on the vehicle body side. Steering mechanism.
JP13621890A 1990-05-25 1990-05-25 Automatic rear wheel steering mechanism for vehicles Expired - Lifetime JP2910160B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13621890A JP2910160B2 (en) 1990-05-25 1990-05-25 Automatic rear wheel steering mechanism for vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13621890A JP2910160B2 (en) 1990-05-25 1990-05-25 Automatic rear wheel steering mechanism for vehicles

Publications (2)

Publication Number Publication Date
JPH0431179A JPH0431179A (en) 1992-02-03
JP2910160B2 true JP2910160B2 (en) 1999-06-23

Family

ID=15170064

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13621890A Expired - Lifetime JP2910160B2 (en) 1990-05-25 1990-05-25 Automatic rear wheel steering mechanism for vehicles

Country Status (1)

Country Link
JP (1) JP2910160B2 (en)

Also Published As

Publication number Publication date
JPH0431179A (en) 1992-02-03

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