JPH0688551B2 - Motorcycle - Google Patents

Motorcycle

Info

Publication number
JPH0688551B2
JPH0688551B2 JP60287177A JP28717785A JPH0688551B2 JP H0688551 B2 JPH0688551 B2 JP H0688551B2 JP 60287177 A JP60287177 A JP 60287177A JP 28717785 A JP28717785 A JP 28717785A JP H0688551 B2 JPH0688551 B2 JP H0688551B2
Authority
JP
Japan
Prior art keywords
lower arm
arm
front wheel
knuckle
steering
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
JP60287177A
Other languages
Japanese (ja)
Other versions
JPS6231582A (en
Inventor
武 川口
明夫 河野
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP60287177A priority Critical patent/JPH0688551B2/en
Priority to EP86305983A priority patent/EP0211638B1/en
Priority to ES8600823A priority patent/ES2000824A6/en
Priority to CA000515183A priority patent/CA1275055A/en
Priority to US06/893,001 priority patent/US4723785A/en
Priority to DE8686305983T priority patent/DE3669296D1/en
Priority to AU60782/86A priority patent/AU586491B2/en
Publication of JPS6231582A publication Critical patent/JPS6231582A/en
Publication of JPH0688551B2 publication Critical patent/JPH0688551B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Steering Devices For Bicycles And Motorcycles (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は前方に延出する上下のスイングアーム前端に、
ナックルを介して前輪を転舵可能に支承する自動二輪車
に関する。
DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention has front and rear swing arm front ends that extend forward.
The present invention relates to a motorcycle in which front wheels can be steered via a knuckle.

(従来の技術) 前方に延出する上下のスイングアーム前端に、ナックル
を介して前輪を転舵可能に支承し、一方のスイングアー
ムは、その前端を前輪車軸の近傍に配され、該スイング
アームは緩衝器を備えて成る自動二輪車は特公昭58−49
435号公報に開示される。
(Prior Art) Front and rear swing arm front ends are supported by steerable front wheels via knuckles, and one swing arm has its front end disposed near a front wheel axle. Is a motorcycle equipped with a shock absorber
It is disclosed in Japanese Patent No. 435.

(発明が解決しようとする問題点) 前輪の転舵時におけるタイヤに対する逃げを設ける必要
からスイングアームの中間部を側方へ張り出すよう湾曲
形成しなければならず、特に緩衝器を備えるスイングア
ームはその側方への張り出し量は大きなものとなってい
た。
(Problems to be Solved by the Invention) Since it is necessary to provide a clearance for the tire when the front wheels are steered, the swing arm must have a curved shape so that the middle portion of the swing arm extends laterally. Had a large overhang to the side.

(問題点を解決するための手段) 前記問題点を解決するため前方に延出するアッパーアー
ムとロアアームの前端に、ナックルを介して前輪を転舵
可能に支承し、前記ロアアームは、その前端を前輪車軸
の近傍に配置され、該ロアアームは緩衝器を備えて成る
自動二輪車において、 前記ロアアームを正キャスタ角を有する操舵軸に対して
静状態でほぼ直交する方向に上向きに、且つ前輪の側方
に配置し、該ロアアームの前記ナックルとの連結点を前
輪車軸よりも上方に位置させたことを特徴とする。
(Means for Solving Problems) In order to solve the above problems, front wheels of the upper arm and the lower arm extending forward are supported by a knuckle so that the front wheels can be steered, and the lower arm has its front end supported. A motorcycle, wherein the lower arm is arranged near a front wheel axle and the lower arm includes a shock absorber, wherein the lower arm is upward in a direction substantially perpendicular to a steering shaft having a positive caster angle and laterally of the front wheel. And the connection point of the lower arm with the knuckle is located above the front wheel axle.

(作用) 転舵軸(K)を中心とする前輪(21)の回動半径が小さ
いところの前輪(21)の側面にスイングアーム(15)を
配設するため、スイングアーム(15)の側方張り出し量
を小さくできる。またスイングアーム(15)長を短くす
ることができる。
(Operation) Since the swing arm (15) is arranged on the side surface of the front wheel (21) where the turning radius of the front wheel (21) around the steered shaft (K) is small, the side of the swing arm (15) is arranged. The amount of overhang can be reduced. Further, the length of the swing arm (15) can be shortened.

(実施例) 以下に添付図面を基に実施例を説明する。(Examples) Examples will be described below with reference to the accompanying drawings.

第1図は自動二輪車の側面図を示すが、本前輪懸架装置
は自動三輪車等の他の車両にも適用され得る。
Although FIG. 1 shows a side view of a motorcycle, the front wheel suspension system can be applied to other vehicles such as a motorcycle.

図中、(1)はフレーム、(2)はエンジンであり、ダ
ミータンク(を)を載置した側面視V型エンジン(2)
はフレーム(1)上に搭載され、フレーム(1)後部に
は後輪(4)を軸支するリヤスイングアーム(5)が枢
支され、リヤスイングアーム(5)とフレーム(1)後
下部間にはベルクランク(6)及びリンク(7)が架設
され、ベルクランク(6)とフレーム(1)を後上部間
には緩衝器(8)が架設され、またエアクリーナを収納
するダミータンク(3)後方にはシート(9)が設置さ
れ、その下方に燃料タンク(10)が設置される。
In the figure, (1) is a frame, (2) is an engine, and a side view V-type engine (2) on which a dummy tank () is mounted
Is mounted on a frame (1), and a rear swing arm (5) pivotally supporting a rear wheel (4) is pivotally supported at a rear portion of the frame (1). The rear swing arm (5) and the rear lower portion of the frame (1) are supported. A bell crank (6) and a link (7) are installed between them, a shock absorber (8) is installed between the bell crank (6) and the frame (1) between the upper rear part, and a dummy tank ( 3) A seat (9) is installed at the rear, and a fuel tank (10) is installed below it.

前輪懸架装置は第2図及び第3図にも示す如くで、フレ
ーム(1)前部にはリーディング式にフロントスイング
アームが枢支される。即ちフロントスイングアームはア
ッパアーム(11)とロアアーム(15)から成り、フレー
ム(1)前上部と前下部の左右間に架設した枢着軸(1
4),(19)にアッパアーム(11)とロアアーム(15)
がそれぞれ後端で揺動自在に枢支され、アッパアーム
(11)及びロアアーム(15)とフレーム(1)との各連
結点(A),(B)を結ぶ線分(l1)は後傾している。
The front wheel suspension system is also as shown in FIGS. 2 and 3, and a front swing arm is pivotally supported in a leading manner on the front part of the frame (1). That is, the front swing arm is composed of an upper arm (11) and a lower arm (15), and a pivot shaft (1
4), (19) upper arm (11) and lower arm (15)
Are pivotally supported at their rear ends so that the line segment (l 1 ) connecting the connection points (A) and (B) between the upper arm (11) and the lower arm (15) and the frame ( 1 ) is tilted backward. is doing.

アッパアーム(11)は前端が先細りで後端が拡開した左
右のメンバ(12),(12)を有する平面視ほぼV型をな
し、パイプ(13)を架設した左右の後端部で枢着軸(1
4)に枢支される。またロアアーム(15)は後部(16)
が幅広で中間部(17)は左側方へ湾曲し前部(18)が再
び右側方へ向けて屈曲する平面視形状をなし、後部(1
6)の左右で枢着軸(19)に枢支される。更にロアアー
ム(15)は中間部(17)が上方に屈曲する側面視ほぼヘ
字型をなす。
The upper arm (11) is substantially V-shaped in plan view having left and right members (12) and (12) with a tapered front end and a wide rear end, and is pivotally attached at the left and right rear ends where the pipe (13) is installed. Axis (1
Be pivoted to 4). The lower arm (15) has a rear part (16).
Is wide and the middle part (17) is curved to the left side, and the front part (18) is bent to the right side again.
6) Left and right are pivotally supported by a pivot axis (19). Further, the lower arm (15) has a substantially V-shaped side view when the intermediate portion (17) is bent upward.

一方、前輪(21)の車軸(22)はステアリングナックル
(25)の下端に回転自在に軸支され、ステアリングナッ
クル(25)は中間部(26)が前輪(21)のタイヤ(23)
の左側方へ湾曲し上部(27)が再びタイヤ(23)の後上
方へ向けて屈曲する平面視形状をなす。斯かるステアリ
ングナックル(25)の上端部にはボールジョイント(2
9)を介して前記アッパアーム(11)の前端部が枢着連
結される。
On the other hand, the axle (22) of the front wheel (21) is rotatably supported by the lower end of the steering knuckle (25), and the intermediate portion (26) of the steering knuckle (25) has a front wheel (21) tire (23).
Has a plan view shape in which the upper part (27) is bent to the left side and the upper part (27) is bent again upward and rearward of the tire (23). At the upper end of the steering knuckle (25) is a ball joint (2
The front end of the upper arm (11) is pivotally connected via 9).

そしてステアリングナックル(25)下部の車軸(22)よ
り後上部には前記ロアアーム(15)の前端部をボールジ
ョイント(31)を介して枢着連結する。ここで、ボール
ジョイント(31)のボール(32)が嵌合するソケット
(33)はステアリングナックル(25)に一体に形成さ
れ、このソケット(33)の上方にロアアーム(15)前端
部のボール軸(34)が位置しており、斯くして車軸(2
2)の後上方に近接してボール(32)を配置する。
The front end of the lower arm (15) is pivotally connected to the rear upper part of the steering knuckle (25) below the axle (22) through a ball joint (31). Here, the socket (33) into which the ball (32) of the ball joint (31) fits is integrally formed with the steering knuckle (25), and the ball shaft of the front end of the lower arm (15) is located above the socket (33). (34) is located and thus the axle (2
2) Place the ball (32) close to the upper rear.

以上において、アッパアーム(11)及びロアアーム(1
5)とステアリングナックル(25)との各連結点
(C),(D)を結ぶ線分、即ち転舵軸(K)は前記線
分(l1)と平行に後傾しており、且つアッパアーム(1
1)及びロアアーム(15)の各前後の連結点(C),
(A),(D),(B)をそれぞれ結ぶ線分(l2),
(l3),も互いに平行をなし、且つ両線分(l2),
(l3)は静状態では前上がりに傾斜している。従って線
分(l1),(l2),(l3),(K)は平行四辺形を形成
している。
In the above, the upper arm (11) and the lower arm (1
The line segment connecting the connection points (C) and (D) between 5) and the steering knuckle (25), that is, the steering axis (K) is tilted backward parallel to the line segment (l 1 ), and Upper arm (1
1) and the connecting points (C) before and after each of the lower arms (15),
Line segments (l 2 ) connecting (A), (D), and (B) respectively,
(L 3 ), also parallel to each other, and both line segments (l 2 ),
(L 3 ) is inclined forward and upward in a static state. Therefore, the line segments (l 1 ), (l 2 ), (l 3 ), and (K) form a parallelogram.

更に第4図にも示す如くステアリングナックル(25)の
中間部(26)外側面にはボールジョイント(35)を介し
てタイロッド(36)の前端部が枢着連結され、タイロッ
ド(36)の後端部はボールジョイント(37)を介してレ
バー(38)に枢着連結され、レバー(38)は上端部で支
軸(39)を介してフレーム(1)前上部の左側に枢支さ
れる。
Further, as shown in FIG. 4, the front end of the tie rod (36) is pivotally connected to the outer surface of the intermediate portion (26) of the steering knuckle (25) via a ball joint (35), and the rear end of the tie rod (36) is connected. The end portion is pivotally connected to the lever (38) via a ball joint (37), and the lever (38) is pivotally supported at the upper end on the left side of the front upper part of the frame (1) via a support shaft (39). .

他方、ダミータンク(3)の前方部にはステムパイプ
(41)が固設され、このステムパイプ(41)内には上端
部にバーハンドル(42)を固設してステアリングステム
(43)が縦通され、このステアリングステム(43)の下
端部には左側方に突出するステアリングアーム(44)が
固設される。このステアリングアーム(44)の先端部と
レバー(38)間にはステアリングロッド(45)がそれぞ
れボールジョイント(46),(47)を介して架設され
る。
On the other hand, the stem pipe (41) is fixedly installed in the front part of the dummy tank (3), and the bar handle (42) is fixedly installed at the upper end part in the stem pipe (41) to form the steering stem (43). A steering arm (44) which is vertically passed and which projects leftward is fixedly provided at a lower end portion of the steering stem (43). A steering rod (45) is installed between the tip of the steering arm (44) and the lever (38) via ball joints (46) and (47), respectively.

またロアアーム(15)とフレーム(1)前下部間には2
本のリンク(51),(52)が架設され、一方のリンク
(52)とフレーム(1)前部間には緩衝器(53)が架設
され、緩衝器(53)はロアアーム(15)の後部(16)に
形成した孔部(161)内に配置される。
In addition, 2 between the lower arm (15) and the lower front part of the frame (1).
Book links (51) and (52) are installed, and a shock absorber (53) is installed between one link (52) and the front part of the frame (1). The shock absorber (53) is connected to the lower arm (15). It is arranged in the hole (161) formed in the rear part (16).

尚、図中、(55)はブレーキディスク、(56)はブレー
キキャリパである。
In the figure, (55) is a brake disc, and (56) is a brake caliper.

このように転舵軸(K)を中心とする前輪(21)の回動
半径が小さいところの前輪(21)の側方にロアアーム
(15)を配設するため、ロアアーム(15)の側方張り出
し量が小さくできる。
Since the lower arm (15) is arranged on the side of the front wheel (21) where the turning radius of the front wheel (21) around the steered shaft (K) is small as described above, the side of the lower arm (15) is arranged. The amount of overhang can be reduced.

第2図について詳しく述べると、連結点(B)を通り、
転舵軸(K)に直交する直線(l4)とし、直線(l4)と
転舵軸(K)との交点を(E)、前輪(21)の後方との
後点(E1)とすると、回動半径(R2)は線分(EE1)で
ある。ここで、ロアアーム(15)は直線(l4)と同方向
に延出するので、このロアアーム(15)は静状態で、操
舵軸(K)に対してほぼ直交する方向に上向きに配置さ
れることになる。
Referring to FIG. 2 in detail, passing through the connection point (B),
A straight line (l 4 ) orthogonal to the steered shaft (K) is defined, the intersection of the straight line (l 4 ) and the steered shaft (K) is (E), and the rear point of the front wheel (21) and the rear point (E 1 ) Then, the turning radius (R 2 ) is the line segment (EE 1 ). Here, since the lower arm (15) extends in the same direction as the straight line (l 4 ), the lower arm (15) is in a static state and is arranged upward in a direction substantially orthogonal to the steering axis (K). It will be.

一方、従来例を仮定すると、連結点(B)を通る水平線
(P)と転舵軸(K)及び前輪(21)の後方との交点を
それぞれ(P0),(P1)とすると、従来のスイングアー
ムは先部(P0P1)上に配置されることとなる。
On the other hand, assuming the conventional example, if the intersections of the horizontal line (P) passing through the connecting point (B) and the steered shaft (K) and the rear of the front wheels (21) are (P 0 ) and (P 1 ), respectively, The conventional swing arm will be placed on the tip (P 0 P 1 ).

ここで、前輪(21)を右に最大操舵したときの位置を
(21)で示すと、位置(21)と線分(P0P1)との交
点(F2)を通り、且つ転舵軸(K)を直交する線分(FF
1)が、この場合の回動半径(R1)である。
Here, when the position when the front wheel (21) is steered to the right to the maximum is indicated by (21), it passes through the intersection (F 2 ) of the position (21) and the line segment (P 0 P 1 ) and the steering A line segment (FF that intersects the axis (K) at right angles
1 ) is the turning radius (R 1 ) in this case.

前輪(21)の後方における最大回動半径(Rmax)は線分
(GG1)で示される。
The maximum turning radius (Rmax) behind the front wheel (21) is indicated by a line segment (GG 1 ).

図より(R2<R1)は明らかであり、前輪(21)に対する
逃げのためのロアアーム(15)の側方張り出し量を、従
来より小さくすることができる。またロアアーム(15)
を直線(l4)上に配設するため、アーム長を短くでき
る。
From the figure, (R 2 <R 1 ) is clear, and the lateral extension amount of the lower arm (15) for escaping the front wheel (21) can be made smaller than before. Also lower arm (15)
The arm length can be shortened by arranging on the straight line (l 4 ).

実施例において、ロアアーム(15)を点(L0)より下方
の連結点(D)でナックル(25)に支承するため、線分
(CD)を線分(CL0)より大きくでき、ナックル(25)
の支持剛性を確保し易い。
In the embodiment, since the lower arm (15) is supported on the knuckle (25) at the connecting point (D) below the point (L 0 ), the line segment (CD) can be made larger than the line segment (CL 0 ), and the knuckle ( twenty five)
It is easy to secure the support rigidity of.

またロアアーム(15)は中間部(17)が上方に屈曲して
いる分だけロードクリアランスを大きくとることができ
る。
Further, the lower arm (15) can have a large load clearance as much as the middle portion (17) is bent upward.

(発明の効果) 以上のように本発明によれば、スイングアームの側方へ
の張り出し量を小さくし、スイングアーム長が短くなる
ため、スイングアームの強度上有利であり、バネ下重量
を軽くすることができる。
As described above, according to the present invention, the lateral extension of the swing arm is reduced and the swing arm length is shortened, which is advantageous in terms of the strength of the swing arm and the unsprung weight is light. can do.

又、ロアアームのナックルとの連結点を前輪車軸よりも
上方に位置させたので、この点においてもロアアームの
長さを短くすることができる。
Further, since the connecting point of the lower arm with the knuckle is located above the front wheel axle, the length of the lower arm can be shortened also at this point.

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

第1図は自動二輪車の側面図、第2図及び段3図は前輪
懸架装置の側面図と平面図、第4図は操舵装置の斜視図
である。 尚、図面中、(1)はフレーム、(11),(15)はフロ
ントスイングアーム、(21)は前輪、(22)は車軸、
(23)はタイヤ、(25)はステアリングナックル、
(A),(B),(C),(D)は連結点、(K)は転
舵軸、(l1),(l2),(l3)は線分である。
FIG. 1 is a side view of a motorcycle, FIGS. 2 and 3 are side views and a plan view of a front wheel suspension system, and FIG. 4 is a perspective view of a steering system. In the drawings, (1) is a frame, (11) and (15) are front swing arms, (21) is front wheels, (22) is an axle,
(23) is a tire, (25) is a steering knuckle,
(A), (B), (C), and (D) are connection points, (K) is a turning axis, and (l 1 ), (l 2 ), and (l 3 ) are line segments.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】前方に延出するアッパーアームとロアアー
ムの前端に、ナックルを介して前輪を転舵可能に支承
し、前記ロアアームは、その前端を前輪車軸の近傍に配
置され、該ロアアームは緩衝器を備えて成る自動二輪車
において、 前記ロアアームを正キャスタ角を有する操舵軸に対し
て、静状態でほぼ直交する方向に上向きに、且つ前輪の
側方に配置し、該ロアアームの前記ナックルとの連結点
を前輪車軸よりも上方に位置させたことを特徴とする自
動二輪車。
1. A front wheel is rotatably supported by front ends of an upper arm and a lower arm extending forward through a knuckle, and the lower arm has its front end arranged in the vicinity of a front wheel axle. In a motorcycle comprising a device, the lower arm is arranged upward with respect to a steering shaft having a positive caster angle in a direction substantially orthogonal in a static state and laterally of the front wheel, and the lower arm and the knuckle are arranged. A motorcycle characterized in that the connecting point is located above the front axle.
JP60287177A 1985-08-01 1985-12-20 Motorcycle Expired - Lifetime JPH0688551B2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP60287177A JPH0688551B2 (en) 1985-12-20 1985-12-20 Motorcycle
EP86305983A EP0211638B1 (en) 1985-08-01 1986-08-01 Suspension system for a vehicle
ES8600823A ES2000824A6 (en) 1985-08-01 1986-08-01 Suspension system for a vehicle.
CA000515183A CA1275055A (en) 1985-08-01 1986-08-01 Front suspension for a vehicle
US06/893,001 US4723785A (en) 1985-08-01 1986-08-01 Front suspension for a vehicle
DE8686305983T DE3669296D1 (en) 1985-08-01 1986-08-01 SUSPENSION SYSTEM FOR A VEHICLE.
AU60782/86A AU586491B2 (en) 1985-08-01 1986-08-01 Front suspension for a vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60287177A JPH0688551B2 (en) 1985-12-20 1985-12-20 Motorcycle

Publications (2)

Publication Number Publication Date
JPS6231582A JPS6231582A (en) 1987-02-10
JPH0688551B2 true JPH0688551B2 (en) 1994-11-09

Family

ID=17714073

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60287177A Expired - Lifetime JPH0688551B2 (en) 1985-08-01 1985-12-20 Motorcycle

Country Status (1)

Country Link
JP (1) JPH0688551B2 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2397317A1 (en) * 1977-05-17 1979-02-09 Jillet Didier Motorcycle with fuel tank below engine - has hub centre steering with front wheel suspension arm(s) hinged to propulsion unit
JPS5849435A (en) * 1981-09-18 1983-03-23 Toshiba Electric Equip Corp Light irradiating device
JPS60139583A (en) * 1983-12-26 1985-07-24 本田技研工業株式会社 Front leading arm structure of motorcycle

Also Published As

Publication number Publication date
JPS6231582A (en) 1987-02-10

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