JPH01306312A - Rear suspension device for vehicle - Google Patents

Rear suspension device for vehicle

Info

Publication number
JPH01306312A
JPH01306312A JP13374088A JP13374088A JPH01306312A JP H01306312 A JPH01306312 A JP H01306312A JP 13374088 A JP13374088 A JP 13374088A JP 13374088 A JP13374088 A JP 13374088A JP H01306312 A JPH01306312 A JP H01306312A
Authority
JP
Japan
Prior art keywords
cam
rear suspension
swing arm
suspension unit
body frame
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
JP13374088A
Other languages
Japanese (ja)
Inventor
Takashi Oosugi
大杉　田賀志
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.)
Suzuki Motor Corp
Original Assignee
Suzuki 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 Suzuki Motor Corp filed Critical Suzuki Motor Corp
Priority to JP13374088A priority Critical patent/JPH01306312A/en
Publication of JPH01306312A publication Critical patent/JPH01306312A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/021—Spring characteristics, e.g. mechanical springs and mechanical adjusting means the mechanical spring being a coil spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • B60G15/062—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the spring being arranged around the damper
    • B60G15/063—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the spring being arranged around the damper characterised by the mounting of the spring on the damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/30—Spring/Damper and/or actuator Units
    • B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/128—Damper mount on vehicle body or chassis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/14—Mounting of suspension arms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/42—Joints with cam surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/24—Wheelchairs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/22—Braking, stopping

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

PURPOSE:To enable a stabilized braking by lowering a car height and to improve a traveling stability by moving up a swing arm for the car body frame at the operation time of a brake. CONSTITUTION:The upper part end part fitting member 5b of a rear suspension unit 5 is supported freely vertically movably on a car body frame 1 via a supporting mechanism 10. An operation rod 22 is provided on a cam 20 and linked to a hydraulic cylinder actuator 23. When a brake is operated, one part of an oil pressure is added to the actuator 23 via a pipe 24 and the cam 20 is energized in a counterclockwise direction via the rod 22. The rear suspension unit 5 is also moved up accordingly, a swing arm 3 is rocked in a counterclockwise direction centering around a rear axle 3a and the car height of the car body rear side is lowered. Consequently a stabilized braking is enabled and the traveling stability is improved.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は車両のリアサスペンション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 rear suspension device for a vehicle.

〔従来技術〕[Prior art]

自動二輪車の走行中、ブレーキを作動させると、重心が
前方へ移動することによりフロントサスペンションの沈
み込み、いわゆるノーズダイブを生じる。このノーズダ
イブか発生すると、フロント荷重が増大する反面、リア
荷重が減少するために、安定したブレーキングか行なわ
れず、また走行安定性にも悪影響を及ぼしていた。そこ
で従来より、フロントサスペンションに各種のアンチノ
ーズダイブ装置を設けているが、上記不都合が解消され
たとは言えず、制動性能および走行安定性の更なる向上
が望まれていた。When the brakes are applied while a motorcycle is running, the center of gravity moves forward, causing the front suspension to sink, resulting in so-called nose dive. When this nose dive occurs, the front load increases while the rear load decreases, making it difficult to perform stable braking and negatively affecting driving stability. Therefore, various anti-nose dive devices have been conventionally provided in front suspensions, but the above-mentioned disadvantages cannot be said to have been solved, and further improvements in braking performance and running stability have been desired.

〔発明の目的〕[Purpose of the invention]

本発明は上記実状に鑑みて、ブレーキ動作時における制
動性能や走行安定性等の更なる向上を達成し得る車両の
リアサスペンション装置を提供することを目的とする。In view of the above-mentioned circumstances, it is an object of the present invention to provide a rear suspension device for a vehicle that can further improve braking performance, running stability, etc. during brake operation.

〔発明の構成〕[Structure of the invention]

そこて本発明ては、サスペンションユニットと車両フレ
ームとの間、およびサスベンンヨンユニットとスイング
アームとの間の少なくとも一方に、上記サスベンジヨシ
ユニットの端部取付部材を上下動自在に支承する支持機
構を設けるとともに、ブレーキを作動させた際にスイン
グアームが車体フレームに対して上動する方向へ支持機
構を付勢する駆動手段を設け、ブレーキ作動時にリア側
の車高を低くするようにして上記目的を達成したのであ
る。Therefore, in the present invention, the end mounting member of the suspension unit is supported vertically movably between at least one of the suspension unit and the vehicle frame and between the suspension unit and the swing arm. In addition to providing a support mechanism, a drive means is also provided to bias the support mechanism in a direction in which the swing arm moves upward relative to the vehicle body frame when the brake is applied, thereby lowering the vehicle height on the rear side when the brake is applied. The above objectives were achieved.

〔実施例〕〔Example〕

以下、本発明を図面に基づいて詳細に説明する。 Hereinafter, the present invention will be explained in detail based on the drawings.

図は、本発明に関わるリアサスペンション装置を、自動
二輪車に適用した例を示している。The figure shows an example in which the rear suspension device according to the present invention is applied to a motorcycle.

車体フレーム１には、支軸２を介してリアスイングアー
ム３（以下スイングアーム３と称する）か上下方向へ揺
動自在に支承されており、このスイングアーム３には、
リンク機構４を介してリアサスペンションユニット５（
以下リアサスユニット５と称する）の下方端部取付部材
５ａが支承されている。一方、上記リアサスユニット５
の上方端部取付部材５ｂは支持機構１０を介して車体フ
レーム１に上下動自在に支持されている。A rear swing arm 3 (hereinafter referred to as swing arm 3) is supported on the vehicle body frame 1 via a support shaft 2 so as to be swingable in the vertical direction.
The rear suspension unit 5 (
A lower end mounting member 5a (hereinafter referred to as rear suspension unit 5) is supported. On the other hand, the above rear suspension unit 5
The upper end attachment member 5b is supported by the vehicle body frame 1 via a support mechanism 10 so as to be vertically movable.

支持機構１０は、車体フレーム１に固設されたブラケッ
ト１１と、このブラケット１１にピン１２を介して揺動
自在に支承されたレバ一部材１３とから構成されており
、上記リアサスユニット５の上方端部取付部材５ｂは、
ピン１４を介して上記レバ一部材１３に支承されている
。なお、ブラケット１１における符号１１ａは、レバ一
部材１３かピン１２を中心として図中実線で示す位置か
ら時計方向へ揺動することを規制するために形成された
ストッパ部である。The support mechanism 10 is composed of a bracket 11 fixed to the vehicle body frame 1 and a lever member 13 swingably supported by the bracket 11 via a pin 12, and is located above the rear suspension unit 5. The end attachment member 5b is
It is supported by the lever member 13 via a pin 14. The reference numeral 11a in the bracket 11 is a stopper portion formed to prevent the lever member 13 from swinging clockwise about the pin 12 from the position shown by the solid line in the figure.

上記上方端部取付部材５ｂの直上域には、レバ一部材１
３と当接する周面カム２０が設けられており、そのカム
外形は長円形状を呈している。また、上記カム２０は、
車体フレーム１に固設された図示していないブラケット
にカム軸２１を介して回動自在に支持されており、さら
に上記カム２０には、操作ロッド２２の一端２２ａがピ
ン結合されている。上記ロッド２２の他端２２ｂは油圧
シリンダアクチュエータ２３に連係されたおり、このア
クチュエータ２３には、図示していない油圧ブレーキへ
のオイル供給パイプから分岐されたパイプ２４が連通さ
れている。上記周面カム２０゜操作ロッド２２、および
油圧シリンダアクチュエータ２３等から駆動手段３０が
構成されている。A lever member 1 is located directly above the upper end mounting member 5b.
A circumferential cam 20 that comes into contact with the cam 3 is provided, and the outer shape of the cam is an ellipse. Further, the cam 20 is
The cam 20 is rotatably supported by a bracket (not shown) fixed to the vehicle body frame 1 via a cam shaft 21, and one end 22a of an operating rod 22 is connected to the cam 20 with a pin. The other end 22b of the rod 22 is linked to a hydraulic cylinder actuator 23, and this actuator 23 is connected to a pipe 24 branched from an oil supply pipe to a hydraulic brake (not shown). A driving means 30 is comprised of the peripheral cam 20° operating rod 22, hydraulic cylinder actuator 23, and the like.

自動二輪車が停止、あるいは走行している場合、カム２
０はアクチュエータ２３によって時計回りに回動付勢さ
れており、カム２０の長袖側カム面がレバ一部材１３を
押下することにより、このレバ一部材１３は図中実線で
示す下降限度位置に占位し、該レバー１３と連係するリ
アサスユニット５は、実線で示す常態位置に占位してい
る。When the motorcycle is stopped or running, cam 2
0 is rotated clockwise by the actuator 23, and when the long-sleeve side cam surface of the cam 20 presses down the lever member 13, this lever member 13 is moved to the lowering limit position shown by the solid line in the figure. The rear suspension unit 5, which is connected to the lever 13, is in the normal position shown by the solid line.

いま、ブレーキを作動させると、ブレーキに作用する油
圧の一部がパイプ２４を介してアクチュエータ２３に加
わり、カム２０がロッド２２を介して反時計回りに回動
付勢される。上記カム２０が図中鎖線で示す如く、その
長軸を横にして占位すると、レバ一部材１３か鎖線で示
す如くカム２０に当接する位置まで上動し、これに伴い
リアサスユニット５も上動する。これは、車体フレーム
１か車重によって沈下することにより、スイングアーム
３がリアアクスル３ａを中心として反時計方向に揺動、
言い換えればスイングアーム３か鎖線で示す如く車体フ
レーム１に対して上動するためてあり、これによって車
体リア側の車高か低くなる。Now, when the brake is activated, part of the hydraulic pressure acting on the brake is applied to the actuator 23 via the pipe 24, and the cam 20 is urged to rotate counterclockwise via the rod 22. When the cam 20 is positioned with its long axis horizontally as shown by the chain line in the figure, the lever member 13 moves upward to the position where it comes into contact with the cam 20 as shown by the chain line, and the rear suspension unit 5 also moves upward accordingly. move. This is because the swing arm 3 swings counterclockwise around the rear axle 3a as the body frame 1 sinks due to the weight of the vehicle.
In other words, the swing arm 3 moves upward with respect to the vehicle body frame 1 as shown by the chain line, thereby lowering the vehicle height on the rear side of the vehicle body.

ブレーキを解放すると、アクチュエータ２３によりカム
２０か時計回りに回動付勢され、レバー部材１３、゛リ
アサスユニット５、およびスイングアーム３が実線で示
す常態位置に復帰する。When the brake is released, the cam 20 is rotated clockwise by the actuator 23, and the lever member 13, rear suspension unit 5, and swing arm 3 return to their normal positions as shown by solid lines.

なお本例では、油圧シリンダアクチュエータでカムを動
作させているが、モータやソレノイド等の電気アクチュ
エータを用いることも可能であり、またカム軸に直接ア
クチュエータを連係してカムを動作させるよう構成して
もよい。さらに支持機（Ｒおよび駆動手段は、リアサス
ユニットとスイングアームとの間に設けてもよく、勿論
リアサスユニットと車体フレームとの間、およびリアサ
スユニットとスイングアームとの間の両者に設けてもよ
い。また、支持機構を付勢する手段としては、本例のカ
ム機構以外の様々な機構、例えばリンク機構等を適宜採
用し得ることは言うまでもない。In this example, the cam is operated by a hydraulic cylinder actuator, but it is also possible to use an electric actuator such as a motor or solenoid, or the cam can be operated by linking the actuator directly to the camshaft. Good too. Furthermore, the support device (R and drive means) may be provided between the rear suspension unit and the swing arm, and of course may be provided both between the rear suspension unit and the vehicle body frame and between the rear suspension unit and the swing arm. Furthermore, as a means for biasing the support mechanism, it goes without saying that various mechanisms other than the cam mechanism of this example, such as a link mechanism, can be appropriately employed.

さらに本発明は、自動二輪車以外の車両にも適用するこ
とができる。Furthermore, the present invention can be applied to vehicles other than motorcycles.

〔発明の効果〕〔Effect of the invention〕

以上詳述した如く、本発明に関わる車両のリアサスペン
ション装置によれば、ブレーキの作動時にスイングアー
ムを車体フレームに対して上動させることによってリア
側の車高を低くするよう（ＩＭ成したので、制動時にお
ける重心の前方への移動か抑えられ、この結果、フロン
ト荷重とリア荷重の不釣合が低減されて、安定したブレ
ーキングが可能となり、また走行安定性も向上する。As detailed above, according to the rear suspension device for a vehicle according to the present invention, the swing arm is moved upward relative to the vehicle body frame when the brake is applied, thereby lowering the vehicle height on the rear side. The forward movement of the center of gravity during braking is suppressed, and as a result, the unbalance between the front and rear loads is reduced, enabling stable braking and improving driving stability.

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

図面は本発明に関わるリアサスペンション装置の概念的
な構造および動作態様を示すサスペンションユニット周
辺の要部側面図である。 １・・・車体フレーム、３・・・リアスイングアーム、
５　・リアサスペンションユニット、 １０・支持機構、１１・・・ブラケット、１３・・・レ
バ一部材、２０・・周面カム、２２・・操作ロンド、 ２３・・・ｌ重圧シリンダアクチュエータ、３０・・駆
動手・段。 ■願人　鈴木自動車工業株式会社The drawing is a side view of the main parts around the suspension unit, showing the conceptual structure and operation mode of the rear suspension device according to the present invention. 1...Vehicle frame, 3...Rear swing arm,
5. Rear suspension unit, 10. Support mechanism, 11.. Bracket, 13.. Lever member, 20.. Peripheral cam, 22.. Operating rod, 23.. Heavy pressure cylinder actuator, 30.. Drive means/steps. ■Applicant Suzuki Motor Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 車体フレームとスイングアームとの間にサスペンション
ユニットを介装するとともに、上記車体フレームおよび
スイングアームの少なくとも一方に、上記サスペンショ
ンユニットの端部取付部材を上下動自在に支承する支持
機構を設け、さらに、ブレーキ作動時に上記スイングア
ームが上記車体フレームに対して上動する方向へ上記支
持機構を付勢する駆動手段を設けたことを特徴とするリ
アサスペンション装置。A suspension unit is interposed between the vehicle body frame and the swing arm, and at least one of the vehicle body frame and the swing arm is provided with a support mechanism that vertically supports an end attachment member of the suspension unit, and further, A rear suspension device comprising a drive means for urging the support mechanism in a direction in which the swing arm moves upward with respect to the vehicle body frame when the brake is applied.
JP13374088A 1988-05-31 1988-05-31 Rear suspension device for vehicle Pending JPH01306312A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13374088A JPH01306312A (en) 1988-05-31 1988-05-31 Rear suspension device for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13374088A JPH01306312A (en) 1988-05-31 1988-05-31 Rear suspension device for vehicle

Publications (1)

Publication Number Publication Date
JPH01306312A true JPH01306312A (en) 1989-12-11

Family

ID=15111813

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13374088A Pending JPH01306312A (en) 1988-05-31 1988-05-31 Rear suspension device for vehicle

Country Status (1)

Country Link
JP (1) JPH01306312A (en)

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