JPS6136060A - 4-wheel steering apparatus for car - Google Patents

4-wheel steering apparatus for car

Info

Publication number
JPS6136060A
JPS6136060A JP15675084A JP15675084A JPS6136060A JP S6136060 A JPS6136060 A JP S6136060A JP 15675084 A JP15675084 A JP 15675084A JP 15675084 A JP15675084 A JP 15675084A JP S6136060 A JPS6136060 A JP S6136060A
Authority
JP
Japan
Prior art keywords
wheel steering
rod
stroke
rack
joint
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.)
Pending
Application number
JP15675084A
Other languages
Japanese (ja)
Inventor
Hirotaka Kanazawa
金澤　啓隆
Teruhiko Takatani
高谷　輝彦
Hideji Masumoto
升本　秀治
Shigeki Furuya
古谷　茂樹
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.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
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 Mazda Motor Corp filed Critical Mazda Motor Corp
Priority to JP15675084A priority Critical patent/JPS6136060A/en
Publication of JPS6136060A publication Critical patent/JPS6136060A/en
Pending legal-status Critical Current

Links

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

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

PURPOSE:To certainly secure the stroke absorbing function by dividing a rod for connecting front and rear wheel steering mechanisms into two parts and rotatably supporting one of the rods through a supporting mechanism onto a chassis and arranging a mechanism for absorbing the stroke in the axial direction onto the other. CONSTITUTION:The rack-pinion mechanism 4 of a front-wheel steering mechanism 2 is connected to a rack-pinion mechanism 5 for taking out rear-wheel steering which is arranged in parallel to the mechanism 2 through a connecting member 16. A front dividing rod 20 is connected through a universal joint 18 at the top edge of a driving shaft 17 projecting behind the above-described mechanism 15. The steering shaft 24 of the rack-pinion mechanism 8 of a rear-wheel steering mechanism 6 is connected through a universal joint 23 at the rear edge of th above-described dividing rod 20. The vicinity of the above-described joint 22 of the dividing rod 20 is rotatably supported onto a chassis floor member by a supporting mechanism 25, and a mechanisms 26 for absorbing the stroke in the axial direction is installed midway on the dividing rod 21.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、自動車等の車両において前輪の転舵に応じて
後輪をも転舵制御するようにした車両の４輪操舵装置に
関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a four-wheel steering system for a vehicle such as an automobile, which controls the steering of the rear wheels in accordance with the steering of the front wheels. be.

（従来技術） 従来より、この種の車両の４輪操舵装置として、例えば
特開昭５８−１２２２５９号公報に開示されているよう
に、前輪を転舵する前輪転舵機構と、後輪を転舵する後
輪転舵機構とを備え、この前後輪転舵機構間を前後方向
に延びるロッドで機械的に連結して、前輪の転舵に応じ
て所定の転舵比でもって後輪を転舵するようにしたもの
が知られている。(Prior Art) Conventionally, as a four-wheel steering system for this type of vehicle, a front wheel steering mechanism that steers the front wheels and a front wheel steering mechanism that steers the rear wheels have been used, for example, as disclosed in Japanese Patent Laid-Open No. 122259/1983. The front and rear wheel steering mechanisms are mechanically connected by a rod extending in the front-rear direction, and the rear wheels are steered at a predetermined steering ratio in response to the steering of the front wheels. It is known that this was done.

しかして、上記のような前後方向に延びる連結ロッドを
、車体のフロアに沿って配置しようとするときには、こ
のロッドを少なくとも２分割してジヨイントでもって接
続することが必要となるが、車両の前方もしくは後方か
らの衝突時にロッドが屈折してガソリンタンク、ボディ
ーに損傷を与えたり車室内に突入して乗員に危害を与え
る恐れがある。Therefore, when trying to arrange a connecting rod extending in the front-rear direction as described above along the floor of the vehicle body, it is necessary to divide this rod into at least two parts and connect them with a joint. Or, in the event of a rear-end collision, the rod may bend, damaging the gas tank and body, or entering the passenger compartment, potentially harming the occupants.

（発明の目的） 本発明は上記事情に鑑み、少なくとも２分割して相互に
ジヨイントで連結した分割ロッドにて前輪転舵機構と後
輪転舵機構とを連結した構造において、前方もしくは後
方からの衝突時にロッドの屈折変形を防止するために、
このロッドにストローク吸収機構を配設するについて、
その作動が確実に得られるようにした車両の４輪操舵装
置を提供することを目的とするものである。(Object of the Invention) In view of the above circumstances, the present invention provides a structure in which a front wheel steering mechanism and a rear wheel steering mechanism are connected by a split rod that is divided into at least two parts and connected to each other by a joint. To prevent bending deformation of the rod,
Regarding installing a stroke absorption mechanism on this rod,
It is an object of the present invention to provide a four-wheel steering device for a vehicle that can ensure its operation.

（発明の構成） 本発明の４輪操舵装置は、ジヨイントで接続された分割
ロッドに対し、一方の分割ロッドをそのジヨイントの近
傍で車体に対して支持ｆｉｌによって回転自在に支持す
る一方、他方の分割ロッドに軸方向ストローク吸収機構
を配設してなることを特徴とするものである。(Structure of the Invention) The four-wheel steering device of the present invention has divided rods connected by a joint, and one of the divided rods is rotatably supported with respect to the vehicle body in the vicinity of the joint, while the other divided rod is rotatably supported by a supporting film near the joint. This is characterized in that an axial stroke absorption mechanism is provided on the split rod.

（発明の効果） 本発明によれば、前方もしくは後方すなわち一方もしく
は他方の分割ロッドに対して衝突による押圧力が作用し
た場合にも、少ない支持機構によって１つのストローク
吸収機構の作動を確実に得ることができ、ロッドが屈折
してガソリンタンク、ボディーに損傷を与えたり車室内
に突入するのを防止するとともにロッドの地面落下を防
止して安全性を向上し、さらに、分割ロッド構造の採用
によるレイアウトの改善を図ることができるものである
。(Effects of the Invention) According to the present invention, even when a pressing force due to a collision acts on the front or rear, that is, one or the other split rod, the operation of one stroke absorption mechanism can be reliably achieved with a small number of support mechanisms. This prevents the rod from bending and causing damage to the gas tank and body, or from entering the passenger compartment, and also prevents the rod from falling to the ground, improving safety.Furthermore, by adopting a split rod structure, This makes it possible to improve the layout.

（実施例） 以下、図面により本発明の詳細な説明する。(Example) Hereinafter, the present invention will be explained in detail with reference to the drawings.

第１図は本発明の概略構成を示す要部平面図、第２図は
同側面図で、両図の左方が車両の前部で右方が後部であ
る。左右の前輪１を転舵する前輪転舵機構２は、ステア
リングハンドル３の回転運動を直線往復運動に変換する
ラックピニオン機構４を備えている。一方、左右の後輪
５を転舵する後輪転舵機構６は、パワーステアリング機
構７が付設されたラックピニオン機構８を備えている。FIG. 1 is a plan view of essential parts showing a schematic configuration of the present invention, and FIG. 2 is a side view of the same, where the left side of both figures is the front part of the vehicle and the right side is the rear part. A front wheel steering mechanism 2 that steers the left and right front wheels 1 includes a rack and pinion mechanism 4 that converts rotational motion of a steering handle 3 into linear reciprocating motion. On the other hand, a rear wheel steering mechanism 6 that steers the left and right rear wheels 5 includes a rack and pinion mechanism 8 to which a power steering mechanism 7 is attached.

なお、９は車体フロア部材、１０は後部クロスメンバ、
１１はガソリンタンク、１２はフロントシート、１３は
リヤシートをそれぞれ示している。In addition, 9 is a vehicle floor member, 10 is a rear cross member,
Reference numeral 11 indicates a gasoline tank, 12 indicates a front seat, and 13 indicates a rear seat.

上記前輪転舵機構２と平行に後輪転舵取出し用のラック
ピニオン機構１５が配設され、この後輪転舵取出し用の
ラックピニオン機構１５と前輪転舵機構２のラックピニ
オン機構４とが連結部材１６によって連結されて両者は
一体に作動する。上記後輪転舵取出し用のラックピニオ
ン機構１５は後方に突出する駆動シャフト１７を備え、
この駆動シャフト１７の先端にはユニバーサルジヨイン
ト１８を介して前部の分割ロッド２０が接続されている
。この前部の分割ロッド２０は車体フロア部材９にほぼ
沿って若干傾斜して後方に延び、その後端部には中間の
ユニバーサルジヨイント２２を介して後部の分割ロッド
２１が接続されている。A rack and pinion mechanism 15 for rear wheel steering and extraction is arranged parallel to the front wheel steering mechanism 2, and this rack and pinion mechanism 15 for rear wheel steering and extraction and the rack and pinion mechanism 4 of the front wheel steering mechanism 2 are connected as a connecting member. 16, and both operate as one. The rack and pinion mechanism 15 for steering and taking out the rear wheels includes a drive shaft 17 that projects rearward,
A front split rod 20 is connected to the tip of the drive shaft 17 via a universal joint 18. The front dividing rod 20 extends rearward with a slight inclination substantially along the vehicle body floor member 9, and is connected to the rear dividing rod 21 via an intermediate universal joint 22 at its rear end.

そして、この後部の分割ロッド２１はガソリンタンク１
１の下方に沿ってほぼ水平に後方に延び、その後端部が
後部のユニバーサルジヨイント２３を介して後輪転舵機
構６のラックピニオン機構８の操舵シャフト２４に接続
されている。これにより、２分割された前後の分割ロッ
ド２０．２１の回転作動を介して前輪転舵機構２と後輪
転舵機構６とが機械的に連結され、前輪１の転舵に対し
て所定の転舵比でもって後輪５が転舵されるものである
。This rear split rod 21 is connected to the gasoline tank 1.
1, and its rear end is connected to the steering shaft 24 of the rack and pinion mechanism 8 of the rear wheel steering mechanism 6 via a rear universal joint 23. As a result, the front wheel steering mechanism 2 and the rear wheel steering mechanism 6 are mechanically connected via the rotational operation of the front and rear split rods 20. The rear wheels 5 are steered by the steering ratio.

前記前部の分割ロッド２０の中間のユニバーサルジヨイ
ント２２近傍の後端部分が支持機構２５によって車体フ
ロア部材９に回転自在に支持されている。また、後部の
分割ロッド２１の途中には軸方向ストローク吸収機構２
６が介設されている。A rear end portion of the front split rod 20 near the intermediate universal joint 22 is rotatably supported by the vehicle body floor member 9 by a support mechanism 25. In addition, an axial stroke absorption mechanism 2 is provided in the middle of the rear split rod 21.
6 is interposed.

上記ストローク吸収機構２６の一例としては、第３図に
示すように、ロッド２１の一端部２１ａに固着された筒
状部材２７内に、ロッド２１の他端部２１ｂが摺動自在
に嵌挿され、両者が伸長状態で切断ピン２８が装着され
て一体化されてストローク吸収機構２６が構成されてい
る。衝突荷重の作用時には上記切断ビン２８が切断して
、ロッド２１の一端部２１ａの筒状部材２７内を、ロッ
ド２１の他端部２１ｂが摺動可能となって、該ロッド２
１の軸方向長さが短縮することによりストローフ吸収を
行うものである。As an example of the stroke absorption mechanism 26, as shown in FIG. 3, the other end 21b of the rod 21 is slidably inserted into a cylindrical member 27 fixed to one end 21a of the rod 21. , a cutting pin 28 is attached to both in an extended state and integrated to form a stroke absorption mechanism 26. When a collision load is applied, the cutting pin 28 cuts, and the other end 21b of the rod 21 can slide inside the cylindrical member 27 of the one end 21a of the rod 21.
Stroke absorption is performed by shortening the axial length of 1.

上記のような実施例によれば、前部および後部から衝撃
が作用した場合には、中間部のジヨイント２２近傍が支
持機構２５によって支持されていることから、この部分
での屈折が阻止され、後部の分割ロッド２１にその軸方
向と平行に荷重が作用してストローク吸収機構２６が確
実に作動するものである。According to the embodiment described above, when an impact is applied from the front or rear part, since the vicinity of the joint 22 in the intermediate part is supported by the support mechanism 25, bending at this part is prevented. A load acts on the rear split rod 21 in parallel to its axial direction, so that the stroke absorption mechanism 26 operates reliably.

第４図は軸方向ストローク吸収ｉ構２９の変形例を示し
、ロッド２１の一端部２１ａに固着された筒状部材３０
内に、ロッド２１の他端部２１ｂが摺動自在に嵌挿され
、この他端部２１ｂには凹部３１が形成される一方、筒
状部材３０には細孔３２が開設され、両者の伸長状態で
上記凹部３１に対して細孔３２から合成樹脂等の充填材
３３が注入硬化され、両者が一体化されてストローク吸
収機構２９が構成されている。衝突荷重の作用時には上
記充填材３３による接合状態が破壊されて、Ｏラド２１
の一端部２１ａの筒状部材３０内を、ロッド２１の他端
部２１ｂが摺動可能となって、該ロッド２１の軸方向長
さが短縮することによりストローク吸収を行うものであ
る。FIG. 4 shows a modification of the axial stroke absorption mechanism 29, in which a cylindrical member 30 fixed to one end 21a of the rod 21 is shown.
The other end 21b of the rod 21 is slidably inserted therein, and a recess 31 is formed in the other end 21b, while a pore 32 is opened in the cylindrical member 30 to allow the extension of both. In this state, a filler 33 such as a synthetic resin is injected and hardened into the recess 31 through the pore 32, and the two are integrated to form the stroke absorption mechanism 29. When a collision load is applied, the bonded state by the filler 33 is destroyed, and the Orad 21
The other end 21b of the rod 21 can slide inside the cylindrical member 30 of the one end 21a, and the axial length of the rod 21 is shortened, thereby absorbing the stroke.

なお、前記支持機構２５は第５図に示すように、前部の
分割ロッド２０を支持するボールベアリング３５がスリ
ーブ３６およびラバー３７を介して配設され、若干の位
置調整および振動吸収機能を有するように設けるのが好
ましい。また、この支持機構２５は車体フロア部材９へ
の取付は位置が調整可能にして傾斜している前部の分割
ロッド２０の支持高さの調整ができるようにしても良い
。As shown in FIG. 5, the support mechanism 25 is provided with a ball bearing 35 that supports the front split rod 20 via a sleeve 36 and a rubber 37, and has a slight position adjustment and vibration absorption function. It is preferable to provide it as follows. Further, the support mechanism 25 may be attached to the vehicle body floor member 9 so that its position can be adjusted so that the support height of the inclined front split rod 20 can be adjusted.

一方、上記実施例では、前部の分割ロッド２０の後端部
を支持機構２５で支持し、後部の分割ロッド２１にスト
ローク吸収機構２６を介設するようにしているが、これ
と反対に、後部の分割ロッド２１のジヨイント２２近傍
の前端部を支持機構２５で支持し、前部の分割ロッド２
０にストローク吸収機構２６を介設するようにしてもよ
い。また、上記実施例ではロッドを２分割した例につい
て示したが、３分割以上でもよく、その場合２つの分割
ロッドを前記と同様に接続し、支持機構、ストローク吸
収機構を配設すればよいものである。On the other hand, in the above embodiment, the rear end portion of the front dividing rod 20 is supported by the support mechanism 25, and the stroke absorbing mechanism 26 is interposed in the rear dividing rod 21, but on the contrary, The front end of the rear split rod 21 near the joint 22 is supported by the support mechanism 25, and the front split rod 2
A stroke absorbing mechanism 26 may be interposed at 0. In addition, although the above embodiment shows an example in which the rod is divided into two, it may be divided into three or more, and in that case, the two divided rods may be connected in the same manner as described above, and a support mechanism and a stroke absorption mechanism may be provided. It is.

さらに、軸方向ストローク吸収機構としては、第３図も
しくは第４図に示すものの他、公知の構造が必要に応じ
て適宜採用可能である。Furthermore, as the axial stroke absorbing mechanism, other than the one shown in FIG. 3 or FIG. 4, any known structure can be adopted as appropriate.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例における概略構成を示す要部
平面図、 第２図は同要部側面図、 第３図はストローク吸収機構の一例を示す断面図、 第４図はスト０−り吸収機構の変形例を示す断面図、 第５図は支持機構の断面図である。 １・・・・・・前輪　　　　　　　２・・・・・・前輪
転舵機構５・・・・・・後輪　　　　　　　６・・・・
・・後輪転舵機構９・・・・・・車体フロア部材 １５・・・・・・取出し用ラックピニオン機構１６・・
・・・・連結部材　　　　１８・・・・・・駆動シャフ
ト２０．２１・・・・・・分割ロッド ２２・・・・・・ジヨイント　　　２４・・・・・・操
舵シャフト２５・・・・・・支持機構Fig. 1 is a plan view of the main parts showing a schematic configuration of an embodiment of the present invention, Fig. 2 is a side view of the main parts, Fig. 3 is a sectional view showing an example of a stroke absorption mechanism, and Fig. 4 is a 0-stroke diagram. FIG. 5 is a sectional view showing a modification of the strain absorption mechanism. FIG. 5 is a sectional view of the support mechanism. 1...Front wheel 2...Front wheel steering mechanism 5...Rear wheel 6...
... Rear wheel steering mechanism 9 ... Vehicle floor member 15 ... Rack and pinion mechanism for extraction 16 ...
...Connecting member 18... Drive shaft 20.21... Split rod 22... Joint 24... Steering shaft 25... support mechanism

Claims (1)

【特許請求の範囲】[Claims] （１）ハンドル操舵に応じて前輪を転舵する前輪転舵機
構と、この前輪転舵機構にロッドによって機械的に連係
され前輪の転舵に応じて後輪を転舵する後輪転舵機構と
を備えてなる車両の４輪操舵装置であって、上記ロッド
は前後の分割ロッドに少なくとも２分割され２つの分割
ロッドはジョイントで屈折可能に接続されるとともに、
一方の分割ロッドが上記ジョイントの近傍で車体に対し
て支持機構によって回転自在に支持され、他方の分割ロ
ッドに軸方向ストローク吸収機構が配設されていること
を特徴とする車両の４輪操舵装置。(1) A front wheel steering mechanism that steers the front wheels in response to steering wheel steering, and a rear wheel steering mechanism that is mechanically linked to this front wheel steering mechanism by a rod and that steers the rear wheels in response to steering of the front wheels. A four-wheel steering system for a vehicle, comprising: the rod being divided into at least two front and rear split rods, the two split rods being bendably connected at a joint;
A four-wheel steering system for a vehicle, characterized in that one split rod is rotatably supported with respect to the vehicle body by a support mechanism near the joint, and the other split rod is provided with an axial stroke absorption mechanism. .
JP15675084A 1984-07-27 1984-07-27 4-wheel steering apparatus for car Pending JPS6136060A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15675084A JPS6136060A (en) 1984-07-27 1984-07-27 4-wheel steering apparatus for car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15675084A JPS6136060A (en) 1984-07-27 1984-07-27 4-wheel steering apparatus for car

Publications (1)

Publication Number Publication Date
JPS6136060A true JPS6136060A (en) 1986-02-20

Family

ID=15634496

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15675084A Pending JPS6136060A (en) 1984-07-27 1984-07-27 4-wheel steering apparatus for car

Country Status (1)

Country Link
JP (1) JPS6136060A (en)

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