JPH0146353B2 - - Google Patents
Info
- Publication number
- JPH0146353B2 JPH0146353B2 JP60204008A JP20400885A JPH0146353B2 JP H0146353 B2 JPH0146353 B2 JP H0146353B2 JP 60204008 A JP60204008 A JP 60204008A JP 20400885 A JP20400885 A JP 20400885A JP H0146353 B2 JPH0146353 B2 JP H0146353B2
- Authority
- JP
- Japan
- Prior art keywords
- line segment
- axle
- fork
- support point
- lower fork
- 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
Links
- 239000000725 suspension Substances 0.000 claims description 13
- 239000006096 absorbing agent Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2200/00—Indexing codes relating to suspension types
- B60G2200/10—Independent suspensions
-
- 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
- B60G2204/422—Links for mounting suspension elements
- B60G2204/4222—Links for mounting suspension elements for movement on predefined locus of, e.g. the wheel center
-
- 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
- B60G2204/423—Rails, tubes, or the like, for guiding the movement of suspension elements
Landscapes
- Axle Suspensions And Sidecars For Cycles (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は自動二輪車の前輪懸架装置に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a front wheel suspension system for a motorcycle.
（従来の技術）
自動二輪車用前輪懸架装置としては一般的に
内・外筒摺動型のテレスコピツク方式とリンク方
式とに大別され、それぞれの構造にはおのおの特
長があるが、現在では車軸の軌跡が直線的であ
り、且つストロークも十分にとれるテレスコピツ
ク方式が主流となつている。(Prior art) Front wheel suspension systems for motorcycles are generally divided into two types: a telescopic system with an inner/outer cylinder sliding type, and a link system. Each structure has its own features, but currently The telescopic method, which has a linear trajectory and a sufficient stroke, has become mainstream.
また一部の車種においては、リーデイング型等
の作動性の良いリンク方式が採用されるが、これ
は車軸の軌跡が円弧状となり、ストロークも十分
にとれないことから特定の車種に限定されている
のが実情である。 In addition, some car models adopt a link system with good operability such as a leading type, but this is limited to certain car models because the trajectory of the axle is arcuate and the stroke is not sufficient. That is the reality.
そして英国特許第21494号にて収束する２本の
揺動アームを有するガーターフオーク方式の自動
二輪車用前輪懸架装置が開示され、また英国特許
第526116号には２本の揺動アームを有する平行四
辺形リンク方式の航空機用車輪懸架装置が開示さ
れる。 British Patent No. 21494 discloses a garter fork type front wheel suspension for motorcycles having two converging swinging arms, and British Patent No. 526116 discloses a parallelogram front wheel suspension system having two swinging arms. A link type aircraft wheel suspension system is disclosed.
（発明が解決しようとする問題点）
ところが、ガツターフオーク方式は車軸の軌跡
が円弧を描き、一方、平行四辺形リンク方式は一
定範囲までは車軸の軌跡は直線的であるものの、
それを越えるとかなりの円弧状軌跡を描いてしま
う。(Problem to be solved by the invention) However, in the Gutter fork system, the trajectory of the axle traces an arc, while in the parallelogram link system, the trajectory of the axle is linear up to a certain range.
If you go beyond that, you'll end up drawing a fairly arc-shaped trajectory.
従つて本発明の目的は、基本的には機構学上の
スコツトラツセルの定理内容に準じて力を回転方
向に伝達するために作動性の良い四辺形リンク方
式でありながら、十分なストロークと、直線的な
車軸の行程路とを同時に得ることができるように
した自動二輪車の前輪懸架装置を提供するにあ
る。 Therefore, the object of the present invention is to basically provide a quadrilateral link system with good operability in order to transmit force in the rotational direction in accordance with the mechanistic Skotstrassell theorem, but with sufficient stroke and linear linkage. To provide a front wheel suspension system for a motorcycle that can simultaneously obtain a travel path of an axle.
（問題点を解決するための手段）
以上の問題を解決して目的を達成すべく本発明
は、自動二輪車の前輪懸架装置において、ヘツド
パイプ１１に上部で回動自在に支持されたアツパ
ーフオーク３と、前部に車輪８を軸支したロアー
フオーク６とを前後の揺動アーム４，５で連結し
て側面視四辺形リンクを形成し、該四辺形リンク
に作用する弾発手段７を設け、前後の揺動アーム
４，５を下方へ向かつて収束するよう配置すると
ともに、ロアーフオーク６の車軸６５支持点と前
側の揺動アーム４のロアーフオーク６に対する支
持点４２とを結ぶ線分l3と、前側の揺動アーム４
のアツパーフオーク３及びロアーフオーク６に対
する各支持点４１，４２を結ぶ線分l1とにより形
成される角度の二等分線l4を、車軸６５の行程路
Ｌに対しほぼ直交させて配置し、更に前後の揺動
アーム４，５のロアーフオーク６に対する各支持
点４２，５２を結ぶ線分l5と、前側の揺動アーム
４のアツパーフオーク３及びロアーフオーク６に
対する各支持点４１，４２を結ぶ線分l1とにより
形成される角度範囲内に車軸６５を配置したこと
を特徴とする。(Means for Solving the Problems) In order to solve the above problems and achieve the objects, the present invention provides a front wheel suspension system for a motorcycle, in which an upper fork 3 is rotatably supported at the upper part of a head pipe 11. and a lower fork 6 with a wheel 8 pivotally supported on the front part thereof are connected by front and rear swinging arms 4, 5 to form a quadrilateral link in side view, and an elastic means 7 is provided that acts on the quadrilateral link, The front and rear swinging arms 4, 5 are arranged so as to converge downward, and a line segment l3 connecting the support point of the axle 65 of the lower fork 6 and the support point 42 of the front swinging arm 4 for the lower fork 6; Front swing arm 4
The bisector l4 of the angle formed by the line segment l1 connecting each support point 41, 42 for the upper fork 3 and lower fork 6 is arranged to be substantially orthogonal to the travel path L of the axle 65. Furthermore, a line segment l5 connecting the support points 42, 52 of the front and rear swinging arms 4, 5 to the lower fork 6, and each support point 41, 42 of the front swinging arm 4 to the upper fork 3 and lower fork 6 are defined. It is characterized in that the axle 65 is disposed within the angular range formed by the connecting line segment l1 .
（作用）
特にアツパーフオーク３、ロアーフオーク６及
び前後の揺動アーム４，５とから側面視四辺形リ
ンクを形成し、且つ前後の揺動アーム４，５を下
方へ向かつて収束するよう配置したので、揺動ア
ーム４，５の長さ、収束の角度等により車軸６５
の軌跡を任意に設定でき、またストローク時の作
動瞬間中心０も移動することにより十分なるスト
ロークが得られる。(Function) In particular, the upper fork 3, the lower fork 6, and the front and rear swing arms 4 and 5 form a quadrilateral link in side view, and the front and rear swing arms 4 and 5 are arranged so as to converge downward. Therefore, depending on the length of the swing arms 4 and 5, the angle of convergence, etc., the axle 65
The locus can be arbitrarily set, and a sufficient stroke can be obtained by moving the instantaneous center 0 of the stroke.
そして線分l1と線分l3とにより形成される角度
の二等分線l4を車軸６５の行程路Ｌに対しほぼ直
交させて配置し、且つ線分l1と線分l5とにより形
成される角度範囲内に車軸６５を配置すれば、車
軸６５の行程路Ｌは直線軌跡を描くこととなる。 Then, the bisector l4 of the angle formed by the line segment l1 and the line segment l3 is arranged to be substantially orthogonal to the travel path L of the axle 65, and the line segment l1 and the line segment l5 If the axle 65 is placed within the angular range formed by , the travel path L of the axle 65 will draw a straight line trajectory.
（実施例） 以下に添付図面を基に実施例を説明する。(Example) Examples will be described below based on the accompanying drawings.
第１図は自動二輪車の側面図、第２図は前輪懸
架装置のリンク構造を示す斜視図で、自動二輪車
のフレーム１前部上には後傾するヘツドパイプ１
１が固設され、ヘツドパイプ１１には不図示のハ
ンドルシステム軸が回動自在に挿通支持され、ハ
ンドルステム軸の上下端にはトツプブリツジ３５
とボトムブリツジ３６とが中間部で固設され、ト
ツプブリツジ３５上にはバーハンドル２が固設さ
れる。 Fig. 1 is a side view of the motorcycle, and Fig. 2 is a perspective view showing the link structure of the front wheel suspension system.
A handle system shaft (not shown) is rotatably inserted and supported in the head pipe 11, and a top bridge 35 is installed at the upper and lower ends of the handle stem shaft.
and a bottom bridge 36 are fixed at the intermediate portion, and the bar handle 2 is fixed on the top bridge 35.
トツプブリツジ３５及びボトムブリツジ３６の
両端には左右一対のアツパーフオーク３１，３１
が上部で固設され、これによりアツパーフオーク
３が構成される。このアツパーフオーク３をなす
左右のアツパーアーム３１の下端及び中間部には
枢着点４１，５１にて前後の揺動アーム４，５が
それぞれ枢支され、斯かる揺動アーム４，５の下
端には枢着点４２，５２にてロアーアーム６１が
中間部及び後端でそれぞれ枢支される。左右のロ
アーアーム６１，６１の前端間には車軸６５が、
また後端間には連結軸６６がそれぞれ架設され、
これによりロアーフオーク６が構成される。 A pair of left and right upper forks 31, 31 are provided at both ends of the top bridge 35 and the bottom bridge 36.
is fixed at the upper part, thereby forming the atsupah fork 3. Front and rear swinging arms 4 and 5 are respectively pivotally supported at pivot points 41 and 51 at the lower ends and middle portions of the left and right upper arms 31 forming this upper fork 3, and the lower ends of the swinging arms 4 and 5 are A lower arm 61 is pivotally supported at the intermediate portion and rear end at pivot points 42 and 52, respectively. An axle 65 is located between the front ends of the left and right lower arms 61, 61.
Further, connecting shafts 66 are installed between the rear ends, respectively.
This constitutes the lower fork 6.
そして前側の揺動アーム４の下部とアツパーア
ーム３１の中間部には弾発手段をなす緩衝器７、
即ち同軸的に組付けられたスプリング７１とシヨ
ツクアブソーバ７２が架設され、また車軸６５の
中間部上には前輪をなす車輪８が装着される。 At the lower part of the front swing arm 4 and the middle part of the upper arm 31, there is a shock absorber 7 serving as a springing means.
That is, a spring 71 and a shock absorber 72 are mounted coaxially, and a wheel 8 serving as a front wheel is mounted on the intermediate portion of the axle 65.
斯くして前輪懸架装置は、アツパーフオーク
３、前後の揺動アーム４，５及びロアーフオーク
６とにより側面視四辺形リンクを構成する。 The front wheel suspension system thus includes the upper fork 3, the front and rear swing arms 4 and 5, and the lower fork 6 to form a quadrilateral link in side view.
以上において、第３図にも示すように前後の揺
動アーム４，５を下方に向かつて収束するよう配
置し、即ちアツパーアーム３１及びロアーアーム
６１に対する前側の揺動アーム４の各枢着点４
１，４２を結ぶ線分l1と、同じく後側の揺動アー
ム５の各枢着点５１，５２を結ぶ線分l2とを下方
で交差させる。これにより線分l1と線分l2との交
点０はロアーアーム６１の後半部６３の下方に位
置することとなる。 In the above, as shown in FIG.
The line segment l 1 connecting the points 1 and 42 intersects the line segment l 2 connecting the pivot points 51 and 52 of the swinging arm 5 on the rear side. As a result, the intersection point 0 between the line segment l 1 and the line segment l 2 is located below the rear half portion 63 of the lower arm 61 .
ここで、前側の揺動アーム４は後側の揺動アー
ム５より短く形成され、従つて四辺形リンクは上
下方向に長いほぼ菱形をなし、この菱形リンク内
の長手方向に緩衝器７が配設される。 Here, the front swinging arm 4 is formed shorter than the rear swinging arm 5, so the quadrilateral link has a substantially rhombic shape that is long in the vertical direction, and a shock absorber 7 is disposed in the longitudinal direction within this rhombic link. will be established.
そしてロアーアーム６１の車軸６５支持点と前
記枢着点４２とを結ぶ線分l3の上方と前記線分l1
の下方とにより形成される角度の二等分線l4を車
軸６５の行程路Ｌに対しほぼ直交させて配置し、
且つ前記枢着点４２，５２を結ぶ線分l5の上方と
前記線分l1の下方とにより形成される角度範囲内
に車軸６５を配置する。 Then, above the line segment l 3 connecting the axle 65 support point of the lower arm 61 and the pivot point 42 and the line segment l 1
The bisector l4 of the angle formed by
Further, the axle 65 is disposed within the angular range formed by the upper part of the line segment l5 connecting the pivot points 42 and 52 and the lower part of the line segment l1 .
また前記線分l3をほぼ水平に配置し、即ちロア
ーアーム６１の中間部の枢着点４２より前方の前
半部６２をほぼ水平に配置して初期設定する一
方、前記線分l5、つまりロアーアーム６１の後半
部６３を後上がりに傾斜させて形成する。 In addition, the line segment l 3 is arranged substantially horizontally, that is, the front half 62 of the intermediate portion of the lower arm 61 is arranged substantially horizontally, and the line segment l 5 , that is, the lower arm The rear half 63 of 61 is formed so as to be inclined rearward.
更にアツパーアーム３１に対し後側に両揺動ア
ーム４，５及びロアーアーム６１を配置するとと
もに、ヘツドパイプ１１内に支持されたステアリ
ングステム軸の軸線Ｓを四辺形リンクと交差する
よう、即ち軸線Ｓが前後の揺動アーム４，５に交
差するように配置構成する。 Further, both swing arms 4 and 5 and the lower arm 61 are arranged on the rear side of the upper arm 31, and the axis S of the steering stem shaft supported in the head pipe 11 is arranged so as to intersect with the quadrilateral link, that is, the axis S is arranged in the front and rear directions. The swing arms 4 and 5 are arranged so as to intersect with each other.
また後側の揺動アーム５はほぼ垂直に配置す
る。 Further, the rear swing arm 5 is arranged substantially vertically.
このように特に側面視四辺形リンクを構成する
前後の揺動アーム４，５を下方で収束させて配置
したため、第３図に示すように車軸６５の上下ス
トローク時における前輪懸架装置の瞬間中心０を
変化させることができ、これにより車軸６５の十
分なストロークが得られるとともに、揺動アーム
４，５の長さ、収束の角度等に基づいて車軸６５
の軌跡を任意に設定することができる。 In this way, the front and rear swinging arms 4 and 5 constituting the quadrilateral link in side view are arranged so as to converge downward, so that the instantaneous center of the front wheel suspension system is 0 during the vertical stroke of the axle 65, as shown in FIG. This allows a sufficient stroke of the axle 65 to be obtained, and also allows the axle 65 to be adjusted based on the length of the swinging arms 4, 5, the angle of convergence, etc.
The trajectory can be set arbitrarily.
しかも実施例のように線分l1の下方と線分l3の
上方とにより形成される角度の二等分線l4を車軸
６５の行程路Ｌに対しほぼ直交させて配置すると
ともに、線分l1の下方と線分l5の上方とにより形
成される角度範囲内に車軸６５を配置すると、第
３図のように直線状の車軸６５の行程路Ｌを得る
ことができる。 Moreover, as in the embodiment, the bisector l4 of the angle formed by the lower part of the line segment l1 and the upper part of the line segment l3 is arranged to be substantially perpendicular to the travel path L of the axle shaft 65, and the line If the axle 65 is placed within the angular range formed by the lower part l1 and the upper part l5 , a linear travel path L of the axle 65 can be obtained as shown in FIG.
（発明の効果）
以上のように本発明の自動二輪車の前輪懸架装
置によれば、作動性の良い四辺形リンク方式であ
りながら、十分なストロークと、直線的な車軸の
行程路とを同時に得ることができる。(Effects of the Invention) As described above, according to the front wheel suspension system for a motorcycle of the present invention, a sufficient stroke and a linear travel path of the axle can be obtained at the same time while using the quadrilateral link system with good operability. be able to.
第１図は自動二輪車の側面図、第２図は前輪懸
架装置のリンク構造を示す斜視図、第３図はその
配置構成及び作用を示す模式的側面図である。
尚、図面中、１はフレーム、１１はヘツドパイ
プ、３はアツパーフオーク、３１はアツパーアー
ム、３５，３６はブリツジ、４，５は揺動アー
ム、４１，４２，５１，５２は枢着点、６はロア
ーフオーク、６１はロアーアーム、６５は車軸、
６６は連結軸、７は緩衝器、８は車輪、l1…l5は
線分、０は瞬間中心、Ｌは車軸の行程路、Ｓはハ
ンドルシステム軸の軸線である。
FIG. 1 is a side view of the motorcycle, FIG. 2 is a perspective view showing the link structure of the front wheel suspension, and FIG. 3 is a schematic side view showing the arrangement and operation thereof. In the drawings, 1 is a frame, 11 is a head pipe, 3 is an upper fork, 31 is an upper arm, 35, 36 are bridges, 4, 5 are swing arms, 41, 42, 51, 52 are pivot points, 6 is the lower fork, 61 is the lower arm, 65 is the axle,
66 is a connecting shaft, 7 is a shock absorber, 8 is a wheel, l 1 ... l 5 is a line segment, 0 is a momentary center, L is a stroke path of the axle, and S is an axis of the handle system axis.
Claims (1)
アツパーフオークと、前部に車輪を軸支したロア
ーフオークとを前後の揺動アームで連結して側面
視四辺形リンクを形成し、該四辺形リンクに作用
する弾発手段を設け、前後の揺動アームを下方へ
向かつて収束するよう配置するとともに、 ロアーフオークの車軸支持点と前側の揺動アー
ムのロアーフオークに対する支持点とを結ぶ線分
と、前側の揺動アームのアツパーフオーク及びロ
アーフオークに対する各支持点を結ぶ線分とによ
り形成される角度の二等分線を、車軸の行程路に
対しほぼ直交させて配置し、 更に前後の揺動アームのロアーフオークに対す
る各支持点を結ぶ線分と、前側の揺動アームのア
ツパーフオーク及びロアーフオークに対する各支
持点を結ぶ線分とにより形成される角度範囲内に
車軸を配置したことを特徴とする自動二輪車の前
輪懸架装置。[Claims] 1. An upper fork rotatably supported at the upper part of the head pipe and a lower fork with a wheel pivotally supported at the front are connected by front and rear swinging arms to form a quadrilateral link in side view. A springing means acting on the quadrilateral link is provided, the front and rear swing arms are arranged so as to converge downward, and the axle support point of the lower fork and the support point of the front swing arm for the lower fork are connected. The bisector of the angle formed by the connecting line segment and the line segment connecting each support point for the upper fork and lower fork of the front swing arm is arranged to be substantially orthogonal to the travel path of the axle, Furthermore, the axle is placed within the angular range formed by the line segment connecting each support point for the lower fork of the front and rear swinging arms, and the line segment connecting each support point for the upper fork and lower fork of the front swinging arm. A front wheel suspension system for a motorcycle characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20400885A JPS6192983A (en) | 1985-09-13 | 1985-09-13 | Suspension system for front wheel of motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20400885A JPS6192983A (en) | 1985-09-13 | 1985-09-13 | Suspension system for front wheel of motorcycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6192983A JPS6192983A (en) | 1986-05-10 |
| JPH0146353B2 true JPH0146353B2 (en) | 1989-10-06 |
Family
ID=16483241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20400885A Granted JPS6192983A (en) | 1985-09-13 | 1985-09-13 | Suspension system for front wheel of motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6192983A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0840341A (en) * | 1994-07-29 | 1996-02-13 | Wataru Osouda | Arm, wheel supporting mechanism for motorcycle and wheel supporting mechanism for automobile using this arm |
| IT201600124367A1 (en) | 2016-12-07 | 2018-06-07 | Piaggio & C Spa | SUSPENSION UNIT FOR MOTORCYCLES, WHEEL UNIT FOR MOTORCYCLES, MOTORCYCLE ADVANCES AND MOTORCYCLES RELATIVE |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4944972A (en) * | 1972-09-04 | 1974-04-27 | ||
| JPH037363U (en) * | 1989-06-07 | 1991-01-24 |
-
1985
- 1985-09-13 JP JP20400885A patent/JPS6192983A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4944972A (en) * | 1972-09-04 | 1974-04-27 | ||
| JPH037363U (en) * | 1989-06-07 | 1991-01-24 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6192983A (en) | 1986-05-10 |
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