JPH0637191B2 - Front wheel suspension system for motorcycles - Google Patents
Front wheel suspension system for motorcyclesInfo
- Publication number
- JPH0637191B2 JPH0637191B2 JP28474185A JP28474185A JPH0637191B2 JP H0637191 B2 JPH0637191 B2 JP H0637191B2 JP 28474185 A JP28474185 A JP 28474185A JP 28474185 A JP28474185 A JP 28474185A JP H0637191 B2 JPH0637191 B2 JP H0637191B2
- Authority
- JP
- Japan
- Prior art keywords
- front wheel
- arm
- wheel suspension
- swing arm
- knuckle
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K21/00—Steering devices
- B62K21/005—Steering pivot axis arranged within the wheel, e.g. for a hub center steering arrangement
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は自動二輪車における前輪懸架装置に関する。Description: TECHNICAL FIELD The present invention relates to a front wheel suspension device for a motorcycle.
（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持する自動二輪車は特公昭
５８−４９４３５号公報に開示される。(Prior Art) A motorcycle in which front wheels are steerably supported by knuckles at front ends of upper and lower swing arms extending forward is disclosed in Japanese Patent Publication No. 58-49435.
（発明が解決しようとする問題点） 従来のように下側のスイングアームとナックルとの連結
点を、前車軸の後下方に配置すると、前輪の転舵軸が後
傾しているため、転舵軸を中心とした前輪の実質的な半
径が大きいところ、即ち前輪の側方を下側のスイングア
ームが配置されることになる。(Problems to be Solved by the Invention) When the connecting point between the lower swing arm and the knuckle is arranged at the rear lower side of the front axle as in the conventional case, the steered shaft of the front wheels is tilted backward, A swing arm is arranged where the substantial radius of the front wheels around the rudder axle is large, that is, the side of the front wheels is below.
従って前輪の転舵角を大きくする程、前記下側のスイン
グアームの車中方向の張出量が大きくなる。このため、
該スイングアームの全長及び重量が大きくなり、不必要
にバネ下荷重の増大を招くことが考えられる。Therefore, the larger the steered angle of the front wheels, the larger the amount of protrusion of the lower swing arm in the in-vehicle direction. For this reason,
It is conceivable that the total length and weight of the swing arm become large, which unnecessarily increases the unsprung load.
（問題点を解決するための手段） 前記問題点を解決すべく本発明は、下側のスイングアー
ム(15)とナックル(25)との連結点(D)を前輪(21)の車軸
(22)に対し後上方に配置した。(Means for Solving the Problems) In order to solve the above problems, the present invention relates to an axle of a front wheel (21) at a connection point (D) between a lower swing arm (15) and a knuckle (25).
It was placed behind and above (22).
（作用） 転舵軸(K)を中心として前輪(21)の半径が実質的に小さ
いところの前輪(21)の側方に、下側のスイングアーム(1
5)を配設することができ、該スイングアーム(15)の車巾
方向の張出量を小さくすることができる。従って該スイ
ングアーム(15)の全長を短くできる。(Operation) The lower swing arm (1) is located on the side of the front wheel (21) where the radius of the front wheel (21) is substantially small around the steered shaft (K).
5) can be provided, and the amount of protrusion of the swing arm (15) in the vehicle width direction can be reduced. Therefore, the total 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(3)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フンク(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)後上部間には緩衝器(8)が架設され、またエアクーナ
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)が配置される。In the figure, (1) is a frame, (2) is an engine, and a side view V-type engine (2) on which a dummy tank (3) is mounted is a frame.
A rear swing arm (5) mounted on (1) and pivotally supporting the rear wheel (4) is pivotally supported at the rear of the frame (1), and is mounted between the rear swing arm (5) and the lower rear part of the frame (1). Bergfunk (6)
And link (7) is installed, bell crank (6) and frame
(1) A shock absorber (8) is installed between the upper rear part, a dummy tank (3) for accommodating an air cooler, a seat (9) is installed behind, and a fuel tank (10) is arranged 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(14)，(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 device is also as shown in FIGS. 2 and 3, and a front swing arm is pivotally supported on the front part of the frame (1) in a leading manner. That is, the front swing arm consists of an upper arm (11) and a lower arm (15), and the frame (1)
Pivot shafts (14), (19) installed between the left and right of the upper front part and the lower front part
The upper arm (11) and the lower arm (15) are swingably pivoted at their rear ends, respectively, and the upper arm (11) and the lower arm (15) are
Line segment connecting each connection point (A), (B) between (15) and frame (1)
(l 1 ) is tilted backwards.
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(14)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(1
7)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(16)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)が線分(l
3)の上方に屈曲する側面視ほぼへ字型をなす。The upper arm (11) is substantially V-shaped in plan view having left and right members (12), (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. It is pivotally supported by the shaft (14). The lower arm (15) has a wide rear part (16) and an intermediate part (1
7) has a plan view shape in which the front part (18) is curved to the left side and bent to the right side again, and is pivotally supported by the pivot shaft (19) on the left and right sides of the rear part (16). Furthermore, the lower arm (15) has a line segment (l
3 ) It bends upward and is almost V-shaped in side view.
一方、前輪(21))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(2
7)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(29)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 front wheel (21) is rotatably supported by the lower end of the steering knuckle (25), and the middle part (26) of the steering knuckle (25) is curved to the left of the tire (23) of the front wheel (21). Top (2
7) has a plan view shape in which the tire (23) is bent again upward and rearward. The upper arm (11) is attached to the upper end of the steering knuckle (25) through a ball joint (29).
The front end of the is pivotally connected.
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、これによりソケッ
ト(33)の剛性は高く維持され、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(22)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 thus the rigidity of the socket (33) is maintained high and the socket (33) is maintained. ) Is located above the lower arm (15), and the ball shaft (34) at the front end portion of the lower arm (15) is located near the rear upper part of the axle (22).
以上において、アッパアーム(11)及びロアアーム(15)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(11)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(2)，(l3)は平常
時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, a line segment connecting the connection points (C) and (D) of the upper arm (11) and the lower arm (15) and the steering knuckle (25), that is, the steering axis (K) is the line segment (l 1 ) And a line segment (l 2 ), which connects the connecting points (C), (A), (D), and (B) before and after the upper arm (11) and the lower arm (15), respectively.
(l 3 )) are also parallel to each other, and both line segments ( 2 ) and (l 3 ) incline upwards in normal times. 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 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(4
6)，(47)を介して架設される。On the other hand, the stem pipe (41) is provided at the front of the dummy tank (3).
The steering pipe (41) is fixed to the steering pipe (41), and the bar handle (42) is fixed to the upper end of the steering pipe (41) to vertically pass the steering stem (43). A steering arm (44) protruding to the side is fixedly installed. Between the tip of the steering arm (44) and the lever (38), the steering rod (45) is attached to the ball joint (4
It is installed via 6) and (47).
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。Two links (51) and (52) are installed between the lower arm (15) and the front lower part of the frame (1), and a shock absorber (53) is provided between one link (52) and the front part of the frame (1). ) Is installed and the shock absorber (53)
Is arranged in a hole (161) formed in the rear part (16) of the lower arm (15).
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.
ここで、第２図に示すように転舵軸(K)を中心とした前
輪(21)の最大半径は(R1)であり、従来の下側スイングア
ームを想像線(P)とすると、半径(R2)が前輪(21)の実質
的な回動半径である。Here, as shown in FIG. 2, the maximum radius of the front wheel (21) centered on the steered shaft (K) is (R 1 ), and assuming that the conventional lower swing arm is the imaginary line (P), The radius (R 2 ) is the substantial turning radius of the front wheel (21).
そして本発明のようにすると、線分(l3)にスイングアー
ム(15)が配置されるため、半径(R3)が実質的な回動半径
となり、小さくなった分だけ、スイングアーム(15)の車
巾方向の張出量を小さくできる。従って該スイングアー
ム(15)の全長を短くできる。Further, according to the present invention, since the swing arm (15) is arranged on the line segment (l 3 ), the radius (R 3 ) becomes a substantial turning radius, and the swing arm (15) is reduced by the smaller radius. It is possible to reduce the amount of protrusion in the vehicle width direction. Therefore, the total length of the swing arm (15) can be shortened.
更に実施例においては、スイングアーム(15)の中間部(1
7)を線分(l3)より上方に屈曲させたため、半径は(R4)と
なる。Further, in the embodiment, the intermediate portion (1
The radius is (R 4 ) because 7) is bent above the line segment (l 3 ).
第５図及び第６図は第２実施例を示すもので、ロアアー
ム(15)とナックル(25)を連結する連結部にロアアーム(1
5)とは別体の連結部材(81)を設けた点が異なる。5 and 6 show a second embodiment, in which the lower arm (15) and the knuckle (25) are connected to the lower arm (1
The difference from 5) is that a separate connecting member (81) is provided.
即ち第２実施例では、ナックル(25)のボス部(83)から斜
め後方に延出し、リブ部(85)で補強されたフランジ部(8
7)を形成し、ボールジョイント(31)のボール(32)の受け
部(89)を結合した連結部材(81)をボルト(93)，(93)を介
してフランジ部(87)に結合し、連結部材(81)をフランジ
部(8)と段部(95)で挟持固定した。That is, in the second embodiment, the flange portion (8) extending obliquely rearward from the boss portion (83) of the knuckle (25) and reinforced by the rib portion (85) is used.
7) is formed, and the connecting member (81) to which the receiving portion (89) of the ball (32) of the ball joint (31) is connected is connected to the flange portion (87) via the bolts (93) and (93). The connecting member (81) was sandwiched and fixed by the flange portion (8) and the step portion (95).
このように連結部材(81)をロアアーム(15)とは別体に設
けたので、前記第１実施例における作用、効果に加え
て、ナックル(25)とロアアーム(15)の組付作業の簡易化
を図ることができ、また連結部材(81)をロアアーム(15)
とは別の材質で形成することができる。Since the connecting member (81) is provided separately from the lower arm (15) as described above, in addition to the operation and effect of the first embodiment, the knuckle (25) and the lower arm (15) can be easily assembled. The connecting member (81) can be attached to the lower arm (15).
It can be formed of a different material.
（発明の効果） 以上のように本発明の前輪懸架装置によれば、下側のス
イングアームの全長並びに重量を従来に比べて小さくす
ることができるので、前輪の転舵角の確保とともに、バ
ネ下荷重が軽くなる。(Effects of the Invention) As described above, according to the front wheel suspension device of the present invention, since the overall length and weight of the lower swing arm can be made smaller than in the conventional case, the steering angle of the front wheels can be secured and the spring can be secured. The lower load becomes lighter.
第１図は自動二輪車の側面図、第２図及び第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、第５図及び第６図は前輪懸架装置の要部の第２実施
例を示す側面図と平面図である。 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 device, FIG. 4 is a perspective view of a steering device, and FIGS. 5 and 6 are front wheel suspension devices. It is a side view and a top view showing a 2nd example of an important section. In the drawings, (1) is a frame, (11) and (15) are front swing arms, (21) is a front wheel, (22) is an axle, (23) is a tire, (25) is a steering knuckle, (A ), (B), (C), (D)
Is a connecting point, (K) is a steering axis, and (l 1 ), (l 2 ), and (l 3 ) are line segments.
Claims (3)
に、ナックルを介して前輪を転舵可能に支持した自動二
輪車において、 下側のスイングアームとナックルとの連結点を前輪の車
軸に対し後上方に配置したことを特徴とする自動二輪車
の前輪懸架装置。1. A motorcycle in which front wheels are supported at front ends of upper and lower swing arms extending forward by a knuckle so that the front wheels can be steered, and a connecting point between the lower swing arm and the knuckle is relative to an axle of the front wheel. A front wheel suspension system for a motorcycle, characterized in that the front wheel suspension system is arranged in the upper rear part.
ルに一体に形成されている特許請求の範囲第１項記載の
自動二輪車の前輪懸架装置。2. The front wheel suspension system for a motorcycle according to claim 1, wherein the lower swing arm connecting portion is integrally formed with the knuckle.
ルとは別体に設けられている特許請求の範囲第１項記載
の自動二輪車の前輪懸架装置。3. The front wheel suspension system for a motorcycle according to claim 1, wherein the connecting portion with the lower swing arm is provided separately from the knuckle.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28474185A JPH0637191B2 (en) | 1985-12-18 | 1985-12-18 | Front wheel suspension system for motorcycles |
| 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 |
| CA000515183A CA1275055A (en) | 1985-08-01 | 1986-08-01 | Front suspension for a vehicle |
| ES8600823A ES2000824A6 (en) | 1985-08-01 | 1986-08-01 | Suspension system for a vehicle. |
| EP86305983A EP0211638B1 (en) | 1985-08-01 | 1986-08-01 | Suspension system for a vehicle |
| US06/893,001 US4723785A (en) | 1985-08-01 | 1986-08-01 | Front suspension for a vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28474185A JPH0637191B2 (en) | 1985-12-18 | 1985-12-18 | Front wheel suspension system for motorcycles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6231580A JPS6231580A (en) | 1987-02-10 |
| JPH0637191B2 true JPH0637191B2 (en) | 1994-05-18 |
Family
ID=17682390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28474185A Expired - Lifetime JPH0637191B2 (en) | 1985-08-01 | 1985-12-18 | Front wheel suspension system for motorcycles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0637191B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01237279A (en) * | 1988-03-16 | 1989-09-21 | Honda Motor Co Ltd | Device for steering front wheel of motorcycle |
-
1985
- 1985-12-18 JP JP28474185A patent/JPH0637191B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6231580A (en) | 1987-02-10 |
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