JPS63180572A - Four wheel steering device for car - Google Patents

Four wheel steering device for car

Info

Publication number
JPS63180572A
JPS63180572A JP62013255A JP1325587A JPS63180572A JP S63180572 A JPS63180572 A JP S63180572A JP 62013255 A JP62013255 A JP 62013255A JP 1325587 A JP1325587 A JP 1325587A JP S63180572 A JPS63180572 A JP S63180572A
Authority
JP
Japan
Prior art keywords
shaft
protector
wheel steering
steering mechanism
gap
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
JP62013255A
Other languages
Japanese (ja)
Inventor
Hirotaka Kanazawa
金澤 啓隆
Mitsutoshi Node
野手 光俊
Yasuhiro Nakajima
康宏 中島
Yoshiaki Mukai
向井 良明
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 JP62013255A priority Critical patent/JPS63180572A/en
Publication of JPS63180572A publication Critical patent/JPS63180572A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D7/00Steering linkage; Stub axles or their mountings
    • B62D7/06Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
    • B62D7/14Steering 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
    • B62D7/15Steering 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
    • B62D7/1518Steering 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
    • B62D7/1527Steering 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 make a rotation of a shaft smooth, by installing an invasion preventive member which covers a gap between a protector and the shaft near the edge of the protector in order of prevent invasion of any foreign substance into the inside of the protector. CONSTITUTION:The front edge openings of an upper protector 41 and a lower protector 42 are covered in almost hermetical state by a deflector 43, then the gap between a shaft 17 and the both protectors 41, 42 is almost perfectly covered. Therefore it is prevented that foreign substances such as snow, mud and dust so on invade this part from this gap. And the deflector 43 serving as a invasion preventive member is formed into the shape of a trumpet, then scatters foreign substance, which come flying from the front in the time of car traveling, upward and downward and right and left, and makes it difficult for foreign substances to invade from the front edge opening. Consequently, there is no fear that, because the above mentioned foreign substances accumulate between the both protectors 41, 42, the rotation of the shaft 17 and the joint parts 21, 23 on both sides, subsequently the operation of a four wheel steering device may be disturbed.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、自!FJJ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] (Industrial Application Field) The present invention is directed to the invention. The present invention relates to a four-wheel steering system for a vehicle such as a FJJ vehicle, which steers and controls the rear wheels in accordance with the steering of the front wheels.

(従来の技術) 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II %’4間を
前後方向に延びるシャフトで機械的に連結して前輪の転
舵量を上記シャフトの回転により後輪転舵機構に伝達し
、これにより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 are used, for example, as disclosed in Japanese Patent Application Laid-open No. 58-122259. The front and rear wheels are mechanically connected by a shaft extending in the longitudinal direction, and the amount of steering of the front wheels is transmitted to the rear wheel steering mechanism by rotation of the shaft. However, there is known a vehicle in which the rear wheels are steered at a predetermined steering ratio in response to the steering of the front wheels.

上記のような4輪操舵装置においては、前輪転舵v1構
と後幅1云舵義構とを連序蟲するシャフトは、例えば実
開昭61−80169@に開示されているように、車室
フロアの下方近傍に配され、車体に固定されl;支持部
材により回転可能に支持されるようになつている。上記
シャフトの配設位置が低い場合等には、該シャフトを覆
うプロテクタを該シャフトに沿って設け、これにより飛
石等による損傷からシャフトを保護するようにすること
が好ましい。
In the above-mentioned four-wheel steering system, the shaft that connects the front wheel steering system V1 and the rear wheel steering system 1, as disclosed in Utility Model Application Laid-open No. 61-80169@ It is disposed near the bottom of the cabin floor, fixed to the vehicle body, and rotatably supported by a support member. When the shaft is installed at a low position, it is preferable to provide a protector along the shaft to cover the shaft, thereby protecting the shaft from damage caused by flying stones or the like.

(発明が解決しようとする問題点) しかしながら、上記プロテクタを設けることにより、シ
ャフトがプロテクタと車体等とにより袋状に覆われるこ
ととなるため、プロテクタの内部に雪、泥、はこり等の
異物が侵入して堆積すると、シャフトの回転が円滑に行
われなくなる可能性がある。
(Problem to be Solved by the Invention) However, by providing the above-mentioned protector, the shaft is covered in a bag-like manner by the protector and the vehicle body, so foreign substances such as snow, mud, and lumps can get inside the protector. If these particles enter and accumulate, the shaft may not rotate smoothly.

本発明は、このような事情に鑑みなされたものであって
、シャフト保護のためのプロテクタを設けた場合であっ
てもシャフトの回転を円滑に行わしめることのできる車
両の4輪操舵装置を提供しようとするものである。
The present invention has been made in view of the above circumstances, and provides a four-wheel steering device for a vehicle that can smoothly rotate a shaft even when a protector is provided to protect the shaft. This is what I am trying to do.

(問題点を解決するための手段) 本発明による車両の4輪操舵装置は、プロテクタの端部
近傍に該プロテクタとシャフトどの隙間を遮蔽する侵入
防止部材を設けてプロテクタの内部への異物の侵入を防
止するようにすることにより、上記目的達成を図るよう
にしたものである。
(Means for Solving the Problems) A four-wheel steering system for a vehicle according to the present invention is provided with an intrusion prevention member near the end of the protector that blocks a gap between the protector and the shaft to prevent foreign matter from entering the inside of the protector. The above objective is achieved by preventing such problems.

すなわち、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よる前輪の転舵に応じて
後輪を転舵する後輪転舵機構と、前記前輪転舵機構と前
記後輪転舵機構とに連結され、前記前輪転舵に構による
前輪の転舵量を前記後輪転舵機構に伝達するシャフトと
、このシャフトに沿って設けられた該シャフトを覆うプ
ロテクタと、このプロテクタの端部近傍に設けられ、該
プロテクタと前記シャフトとの隙間を遮蔽して前記プロ
テクタの内部への異物の侵入を防止する侵入防止部材と
を備えていることを特徴とするものである。
That is, a front wheel steering mechanism that steers the front wheels in response to steering wheel steering, a rear wheel steering mechanism that steers the rear wheels in response to the front wheel steering by the front wheel steering mechanism, the front wheel steering mechanism, and the front wheel steering mechanism. a shaft that is connected to a rear wheel steering mechanism and that transmits the amount of front wheel steering by the front wheel steering mechanism to the rear wheel steering mechanism; a protector that is provided along the shaft and covers the shaft; The invention is characterized in that it includes an intrusion prevention member that is provided near an end of the protector and blocks a gap between the protector and the shaft to prevent foreign matter from entering the inside of the protector.

上記「プロテクタ」は、シャフトが飛石等により損傷す
るのを防止してこれを保護することが可能なものであっ
て、かつ該プロテクタの内部に異物が侵入したときシャ
フトの円滑な回転を阻害する程度に異物が堆積する可能
性があるものであれば、その形状、配置およびシャフト
を覆う範囲等は特に限定されるものではない。
The above-mentioned "protector" is capable of protecting the shaft by preventing it from being damaged by flying stones, etc., and prevents the smooth rotation of the shaft when foreign matter enters the inside of the protector. There are no particular limitations on the shape, arrangement, range covering the shaft, etc., as long as there is a possibility that foreign matter may accumulate to some degree.

上記「異物」とは、雪、泥、はこり、その他プロテクタ
の内部に侵入して堆積し、シャフトの円滑な回転を阻害
するおそれがあるものすべてを意味するものである。
The above-mentioned "foreign matter" refers to snow, mud, scum, and anything else that may invade and accumulate inside the protector and impede smooth rotation of the shaft.

上記「侵入防止部材」は、プロテクタとシャフトとの隙
間を遮蔽してプロテクタの内部への異物の侵入を防止す
ることが可能なものであれば、その形状、材質等は特に
限定されるものではなく、また車体側に設けるようにし
てもよいしシャフト側に設けるようにしてもよく、プロ
テクタの両端部近傍に設けるようにしてもよいし一方の
端部近傍に設けるようにしてもよい。
The above-mentioned "intrusion prevention member" is not particularly limited in its shape, material, etc., as long as it can block the gap between the protector and the shaft and prevent foreign matter from entering the protector. Alternatively, it may be provided on the vehicle body side or on the shaft side, or it may be provided near both ends of the protector, or it may be provided near one end.

なお、上記「シャフト」は、1本でこれを構成してもよ
いし、あるいは複数本を互いに連結してこれを構成して
もよく、複数本で構成した場合において、プロテクタは
1本のシャフトのみを覆うように設けてもよいし複数本
のシャフトにわたって覆うように設けてもよい。
Note that the above-mentioned "shaft" may be composed of one shaft, or may be composed of multiple shafts connected to each other, and in the case that the "shaft" is constructed of multiple shafts, the protector is composed of one shaft. It may be provided so as to cover only the shaft, or it may be provided so as to cover a plurality of shafts.

(発明の効果) 上記構成に示すように、プロテクタによりシャフトは飛
石等による損傷から保護されることとなり、一方、侵入
防止部材によりプロテクタの内部への異物の侵入が防止
されるので異物がプロテクタの内部に堆積することによ
りシャフトの円滑な回転が阻害されるといった事態を回
避することができ、プロテクタを設けることによって生
ずる弊害も除去されることとなる。
(Effects of the Invention) As shown in the above configuration, the protector protects the shaft from damage caused by flying stones, etc. On the other hand, the intrusion prevention member prevents foreign matter from entering the inside of the protector, so foreign matter cannot escape from the protector. It is possible to avoid a situation in which smooth rotation of the shaft is inhibited due to accumulation inside the shaft, and the harmful effects caused by providing a protector are also eliminated.

(実 施 例) 以下、添付図面を参照しながら本発明の実施例について
説明する。
(Embodiments) Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

第1図は本発明による車両の4輪操舵装置の一実施例を
示す平面図、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部材4と、その直線往復運
動を回転運動に変換するビニオン5とを備えている。ラ
ック部材4は、ダツシュロアパネル6の前方でかつエン
ジン7の後方に位置して設けられ、ブラケット8を介し
てダツシュロアパネル6に支持されている。
FIG. 1 is a plan view showing an embodiment of a four-wheel steering system for a vehicle according to 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 left and right front wheels 1 includes a rack member 4 that converts rotational motion of a steering handle 3 into linear reciprocating motion, and a binion 5 that converts the linear reciprocating motion into rotational motion. . The rack member 4 is provided in front of the darts lower panel 6 and behind the engine 7, and is supported by the darts lower panel 6 via a bracket 8.

一方、左右の後輪9を転舵する後輪転舵機構10は、後
部クロスメンバ11に支持されパワーステアリング機構
12が付設されたラックピニオン機構13を備えている
On the other hand, a rear wheel steering mechanism 10 that steers the left and right rear wheels 9 includes a rack and pinion mechanism 13 supported by a rear cross member 11 and to which a power steering mechanism 12 is attached.

上記前輪転舵機構2と後輪転舵11vA10は、車室の
フロアを構成するフロア部材14のトンネル部14a内
に配設された車体前後方向に延びる相互に連結された複
数のシャフト15.166よび17によって連結されて
いる。すなわち、シャフト15の前端部は、前輪転舵機
構2のビニオン5と同軸で設けられてビニオン5の回転
と共に回転する駆動シャフト18にユニバーサルジヨイ
ント19で連結され、シャフト17の後端部は、後輪転
舵機構10のラックピニオン機構13の操舵シャフト2
0にユニバーサルジヨイント21で連結され、シャフト
15の後端部およびシャフト17の前端部はシャフト1
6の前端部および後端部にユニバーサルジヨイント22
および、23でそれぞれ連結されている。上記複数のシ
ャフト15゜16オよび17の回転により前輪転舵!2
による前輪1の転蛇量が後輪転舵機構10に伝達され、
後輪9は所定の転舵比で転舵されることとなる。なお、
複数のシャフト15.16および17により前後輪転舵
!F!横2,10を連結する構成としたのは、フロア部
材14の起伏、燃料タンク24等を回避するとともにレ
イアウトの自由度を増すためである。
The front wheel steering mechanism 2 and the rear wheel steering mechanism 11vA10 are connected to a plurality of mutually connected shafts 15, 166 extending in the longitudinal direction of the vehicle body and disposed within the tunnel portion 14a of the floor member 14 constituting the floor of the passenger compartment. 17. That is, the front end of the shaft 15 is connected by a universal joint 19 to a drive shaft 18 that is provided coaxially with the binion 5 of the front wheel steering mechanism 2 and rotates with the rotation of the binion 5, and the rear end of the shaft 17 is Steering shaft 2 of rack and pinion mechanism 13 of rear wheel steering mechanism 10
0 by a universal joint 21, and the rear end of the shaft 15 and the front end of the shaft 17 are connected to the shaft 1.
Universal joint 22 at the front and rear ends of 6
and 23, respectively. Front wheels can be steered by rotating the multiple shafts 15°, 16°, and 17! 2
The amount of rolling of the front wheels 1 is transmitted to the rear wheel steering mechanism 10,
The rear wheels 9 will be steered at a predetermined steering ratio. In addition,
Front and rear wheel steering with multiple shafts 15, 16 and 17! F! The reason for the configuration in which the sides 2 and 10 are connected is to avoid the undulations of the floor member 14, the fuel tank 24, etc., and to increase the degree of freedom in layout.

シャフト15および17の中間に位置するシャフト16
は、図示の位置を維持すべく、その前端部および後端部
近傍において車体に支持されている。すなわち、シャフ
ト16は、前端部近傍において、フロア部材14のトン
ネル部14aの側面部に溶接された口字形部材25(第
3図参照)にボルト26で固定されたブラケット27に
溶接されたベアリング28により該シャフト16の軸方
向に摺動可能に回転支持され、一方、後端部近傍におい
て、フロア部材14のトンネル部14aの上面部に溶接
されたU字形部材29にボルト30で固定されたブラケ
ット31に溶接されたベアリング32により該シャフト
16の軸方向に摺動可能に回転支持されている。
Shaft 16 located between shafts 15 and 17
is supported by the vehicle body near its front and rear ends to maintain the illustrated position. That is, near the front end of the shaft 16, a bearing 28 is welded to a bracket 27 that is fixed with a bolt 26 to a mouth-shaped member 25 (see FIG. 3) that is welded to the side surface of the tunnel portion 14a of the floor member 14. A bracket is rotatably supported to be slidable in the axial direction of the shaft 16, and is fixed with bolts 30 to a U-shaped member 29 welded to the upper surface of the tunnel portion 14a of the floor member 14 near the rear end. The shaft 16 is rotatably and slidably supported in the axial direction of the shaft 16 by a bearing 32 welded to the shaft 16 .

第2図に示すように、ボルト2Gによるブラケット27
の締結は2箇所においてなされ、それぞれ前方に開放す
る溝部27aにボルト26を通して締結がなされるよう
になっている。一方、ボルト30によるブラケット31
の締結は該ブラケット31に形成された丸孔にボルト3
0を通してなされるようになっている。
As shown in FIG. 2, a bracket 27 with bolts 2G
The bolts 26 are fastened at two locations, and the bolts 26 are passed through grooves 27a that open forward. On the other hand, the bracket 31 with the bolt 30
is fastened by inserting the bolt 3 into the round hole formed in the bracket 31.
It is designed to be done through 0.

ベアリング28および32は、共に、第4図に合軸断面
で示す構造となっている。すなわち、シャフト16の周
上に配された複数のベアリングニードル33と、これら
を支持するベアリングホルダ34と、このベアリングホ
ルダ34の両側に設けられてベアリング内に封入された
潤滑剤をシールするオイルシール35と、これらを収容
するアウタリング36とからなっている。
Both bearings 28 and 32 have a structure shown in a coaxial cross section in FIG. 4. That is, a plurality of bearing needles 33 arranged around the circumference of the shaft 16, a bearing holder 34 that supports them, and oil seals provided on both sides of the bearing holder 34 to seal the lubricant sealed in the bearings. 35, and an outer ring 36 that accommodates them.

第1および2図に示すように、シャフト16のベアリン
グ28および32に支持された各部位の前方には、ベア
リング28および32の外径と略同−径を有する円盤状
のストッパ部材37および38がそれぞれ溶接により固
定されている。これらストッパ部材37、38は、衝突
時の安全性向上を図るべく設けられるものである。すな
わち、車両衝突時におけるエンジン7と前輪転舵機構2
との当接作用等によりシャフト16が軸方向後方に摺動
したとき、上記ストッパ部材37.38を、それぞれベ
アリング28゜32のアウタリング36に当接させてシ
ャフト16の摺動を所定量以下に規制し、これによりシ
ャフト16が所定距離摺動した時点で該シャフト16に
前方向きの反力を作用させて前輪転舵機構2の後退およ
びこれを支持するダツシュロアパネル6の後退を規制し
、乗員の保護を図るようになっている。
As shown in FIGS. 1 and 2, in front of each portion of the shaft 16 supported by the bearings 28 and 32, there are disk-shaped stopper members 37 and 38 having approximately the same outer diameter as the outer diameter of the bearings 28 and 32. are fixed by welding. These stopper members 37 and 38 are provided to improve safety in the event of a collision. That is, the engine 7 and the front wheel steering mechanism 2 at the time of a vehicle collision
When the shaft 16 slides rearward in the axial direction due to the contact action between the shaft 16 and the shaft 16, the stopper members 37 and 38 are brought into contact with the outer ring 36 of the bearing 28° 32 to prevent the shaft 16 from sliding by a predetermined amount. As a result, when the shaft 16 has slid a predetermined distance, a forward reaction force is applied to the shaft 16 to restrict the retreat of the front wheel steering mechanism 2 and the retreat of the darts lower panel 6 that supports it. , designed to protect the occupants.

シャフト17には、軸方向ストローク吸収機構39が設
けられている。この軸方向ストローク吸収機構39は、
第5図に示すように、シャフト17を前後に2分割し、
シャフト前部17aの後端部を筒状に形成してこれにシ
ャフト後部17bの前端部を摺動可能に嵌挿し、両者を
切断ビン40にて締結してなるものであって、シャフト
17叫その軸方向に所定以上の荷重が作用したとき切断
ピン40の切断によりシャフト17を収縮せしめ、これ
によりストローク吸収を行うようになっている。
The shaft 17 is provided with an axial stroke absorption mechanism 39. This axial stroke absorption mechanism 39 is
As shown in FIG. 5, the shaft 17 is divided into two parts, front and rear.
The rear end of the shaft front part 17a is formed into a cylindrical shape, into which the front end of the shaft rear part 17b is slidably inserted, and both are fastened with a cutting pin 40. When a predetermined load or more is applied in the axial direction, the shaft 17 is contracted by cutting the cutting pin 40, thereby absorbing the stroke.

第2図に示すように、シャフト17の上方には、燃料タ
ンク24の下部形状に沿って形成された上部プロテクタ
41が配設されていて、この上部プロテクタ41により
車両衝突時等においてシャフト17等が燃料タンク24
に当接するのを防止してこれを保護するようになってい
る。一方、シャフト17の下方には、シャフト17に沿
って前後に延びる下部プロテクタ42が配設されていて
、この下部プロテクタ42によりシャフト17の下方を
覆って路面からの飛石等によりシャフト17およびその
両端のジヨイント部21.23等が損傷を受けることの
ないようこれらを保護するようになっている。また、上
記上部プロテクタ41および下部プロテクタ42の前方
近傍には、後方へラッパ状に拡がる形状に形成されたラ
バー製のディフレクタ43が設けられていて、該ディフ
レクタ43は、ベアリング32の外周面に嵌着されてい
る。
As shown in FIG. 2, an upper protector 41 is disposed above the shaft 17 and is formed along the shape of the lower part of the fuel tank 24. is the fuel tank 24
It is designed to protect this by preventing it from coming into contact with it. On the other hand, a lower protector 42 is disposed below the shaft 17 and extends back and forth along the shaft 17, and this lower protector 42 covers the lower part of the shaft 17 and protects the shaft 17 and both ends thereof from flying stones etc. from the road surface. The joints 21, 23, etc. are protected from damage. Furthermore, near the front of the upper protector 41 and the lower protector 42, a rubber deflector 43 is provided which is shaped like a trumpet to expand rearward, and the deflector 43 is fitted onto the outer peripheral surface of the bearing 32. It is worn.

第6図は、第2図の■部拡大斜視図であって、ディフレ
クタ43近傍を詳細に示す図である。
FIG. 6 is an enlarged perspective view of part 2 in FIG. 2, showing the vicinity of the deflector 43 in detail.

上部プロテクタ41オよび下部プロテクタ42は、前端
縁が面一となるように配設され、これらの左右のフラン
ジ部41a 、 42aがボルト44で締結され、これ
によりシャフト17を袋状に覆うようになっている。両
プロテクタ41および42により形成される前端開口形
状は略正六角形となっていて、その中心をシャフト16
が貫通するようになっている。そして、ディフレクタ4
3は、上記前端開口より大きい外径にて形成され、該前
端開口に密接してこれと対面するように設けられている
The upper protector 41o and the lower protector 42 are arranged so that their front edges are flush with each other, and their left and right flanges 41a and 42a are fastened with bolts 44, so that they cover the shaft 17 in a bag-like manner. It has become. The front end opening formed by both protectors 41 and 42 has a substantially regular hexagonal shape, and the center thereof is located at the shaft 16.
is designed to penetrate. And deflector 4
3 is formed to have a larger outer diameter than the front end opening, and is provided in close contact with and facing the front end opening.

次に本実施例の作用について説明する。Next, the operation of this embodiment will be explained.

第2および6図に示すように、上部プロテクタ41オよ
び下部プロテクタ42の前端開口は、ディフレクタ43
により密封に近い状態で塞がれるため、シャフト17と
両プOテクタ41.42との隙間はほぼ完全に遮蔽され
ることとなる。したがって、この隙間から雪、泥、はこ
り等の異物が、両プロテクタ41.42によって形成さ
れる袋状部分に侵入するのを防止することが可能となる
。また、侵入防止部材たる上記ディフレクタ43は、ラ
ッパ状に形成されているので、車両走行時前方から飛来
する異物を上下左右に飛散させて上記前端開口からの異
物の侵入を一層困難なものとする効果を奏するものとな
っている。
As shown in FIGS. 2 and 6, the front end openings of the upper protector 41 and the lower protector 42 are connected to the deflector 43.
As a result, the gap between the shaft 17 and both protectors 41 and 42 is almost completely closed. Therefore, it is possible to prevent foreign matter such as snow, mud, and debris from entering the bag-shaped portion formed by both protectors 41 and 42 through this gap. Further, since the deflector 43, which is an intrusion prevention member, is formed in a trumpet shape, it scatters foreign objects flying from the front when the vehicle is running in the vertical and horizontal directions, thereby making it even more difficult for foreign objects to enter through the front end opening. It has become effective.

ディフレクタ43は、車両走行状態を考慮すれば上記の
ように両プロテクタ41.42の前端部側に設けるのが
効果的であるが、後端部側にも設けるようにすれば、異
物の侵入をより一層困難なものとすることができる。
Considering the vehicle running condition, it is effective to provide the deflector 43 on the front end side of both protectors 41 and 42 as described above, but it is also effective to provide the deflector 43 on the rear end side to prevent foreign matter from entering. It can be made even more difficult.

このように本実施例によれば、上部プロテクタ41およ
び下部プロテクタ42間への異物の侵入を防止し、ある
いは侵入したとしてもこれを最小限に押えることが可能
となるため、これら異物が両プロテクタ41.42間に
堆積することによりシャフト17およびその両端のジヨ
イント部21.23の回転ひいては4輪操舵装置の動作
に支障が生ずるおそれをなくすことができる。
In this way, according to this embodiment, it is possible to prevent foreign matter from entering between the upper protector 41 and the lower protector 42, or to minimize it even if it does, so that these foreign matter can be prevented from entering between both protectors. It is possible to eliminate the possibility that the accumulation between 41 and 42 will hinder the rotation of the shaft 17 and the joint portions 21 and 23 at both ends thereof, and thus the operation of the four-wheel steering system.

なお、本実施例においては、侵入防止部材としてベアリ
ング32に嵌着されたラッパ状のラバー製のディフレク
タ43を採用したが、これ以外のものであってもよいこ
とは勿論であり、例えば、ブラケット31を延長して形
成して侵入防止部材とじての機能を持たせるようにして
もよい。
In this embodiment, a trumpet-shaped rubber deflector 43 fitted to the bearing 32 is used as an intrusion prevention member, but it goes without saying that other materials may also be used. For example, a bracket may be used. 31 may be extended and formed to function as an intrusion prevention member.

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

第1図は本発明による車両の4輪操舵8@の一例を示す
平面図、 第2図は該装置の側面図、 第3図は第2図の■−■線断面図、 第4図はベアリングの@造を詳細に示す側断面図、 第5図はストローク吸II!機構を詳細に示す側断面図
、 第6図は第2図の■部拡大斜視図である。 1・・・前  輪     2・・・前輪転舵alI9
・・・後  輪     10・・・後輪転舵機構15
、16.17・・・シャフト 28、32・・・ベアリング(支持部材)41・・・上
部プロテクタ  42・・・下部プロテクタ43・・・
ディフレクタ(侵入防止部材)第3図 第4図 第5図
FIG. 1 is a plan view showing an example of a four-wheel steering system 8@ for a vehicle according to the present invention, FIG. 2 is a side view of the device, FIG. 3 is a sectional view taken along the line ■-■ in FIG. 2, and FIG. A side cross-sectional view showing the details of the bearing structure, Figure 5 is a stroke suction II! FIG. 6 is a side sectional view showing the mechanism in detail, and FIG. 6 is an enlarged perspective view of the section ■ in FIG. 2. 1... Front wheel 2... Front wheel steering alI9
... Rear wheel 10 ... Rear wheel steering mechanism 15
, 16.17... Shaft 28, 32... Bearing (supporting member) 41... Upper protector 42... Lower protector 43...
Deflector (intrusion prevention member) Figure 3 Figure 4 Figure 5

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よる前輪の転舵に応じて後輪を
転舵する後輪転舵機構と、前記前輪転舵機構と前記後輪
転舵機構とに連結され、前記前輪転舵機構による前輪の
転舵量を前記後輪転舵機構に伝達するシャフトと、この
シャフトに沿って設けられた該シャフトを覆うプロテク
タと、このプロテクタの端部近傍に設けられ、該プロテ
クタと前記シャフトとの隙間を遮蔽して前記プロテクタ
の内部への異物の侵入を防止する侵入防止部材とを備え
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 of the steering wheel; a rear wheel steering mechanism that steers the rear wheels in response to the steering of the front wheels by the front wheel steering mechanism; and the front wheel steering mechanism and the a shaft connected to the rear wheel steering mechanism and transmitting the amount of steering of the front wheels by the front wheel steering mechanism to the rear wheel steering mechanism; a protector provided along the shaft to cover the shaft; A four-wheel steering device for a vehicle, comprising an intrusion prevention member that is provided near an end and blocks a gap between the protector and the shaft to prevent foreign matter from entering into the protector. .
JP62013255A 1987-01-22 1987-01-22 Four wheel steering device for car Pending JPS63180572A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62013255A JPS63180572A (en) 1987-01-22 1987-01-22 Four wheel steering device for car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62013255A JPS63180572A (en) 1987-01-22 1987-01-22 Four wheel steering device for car

Publications (1)

Publication Number Publication Date
JPS63180572A true JPS63180572A (en) 1988-07-25

Family

ID=11828107

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62013255A Pending JPS63180572A (en) 1987-01-22 1987-01-22 Four wheel steering device for car

Country Status (1)

Country Link
JP (1) JPS63180572A (en)

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