JPH0976979A - Rear wheel suspension device of motorcycle - Google Patents
Rear wheel suspension device of motorcycleInfo
- Publication number
- JPH0976979A JPH0976979A JP7259200A JP25920095A JPH0976979A JP H0976979 A JPH0976979 A JP H0976979A JP 7259200 A JP7259200 A JP 7259200A JP 25920095 A JP25920095 A JP 25920095A JP H0976979 A JPH0976979 A JP H0976979A
- Authority
- JP
- Japan
- Prior art keywords
- bracket
- rear wheel
- body frame
- shaft
- suspension device
- 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.)
- Granted
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
- B62K25/00—Axle suspensions
- B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
- B62K25/28—Axle suspensions for mounting axles resiliently on cycle frame or fork with pivoted chain-stay
- B62K25/286—Axle suspensions for mounting axles resiliently on cycle frame or fork with pivoted chain-stay the shock absorber being connected to the chain-stay via a linkage mechanism
-
- 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
- B62K25/00—Axle suspensions
- B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
- B62K25/28—Axle suspensions for mounting axles resiliently on cycle frame or fork with pivoted chain-stay
- B62K25/283—Axle suspensions for mounting axles resiliently on cycle frame or fork with pivoted chain-stay for cycles without a pedal crank, e.g. motorcycles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、後輪を支持する
スイングアームの上下動のストロークと、このスイング
アームにリンク機構を介して連結されたリヤサスペンシ
ョン装置の緩衝ストロークとの比を適宜変更できる２輪
車の後輪懸装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can appropriately change the ratio between the vertical stroke of a swing arm supporting a rear wheel and the shock absorbing stroke of a rear suspension device connected to the swing arm via a link mechanism. The present invention relates to a rear wheel suspension system for a motorcycle.
【０００２】[0002]
【従来の技術】現在、一般的に使用されている２輪車の
後輪懸架装置では、図７に示すように、後輪１を支持す
るスイングアーム２と車体フレーム３との間にリンク機
構４が設けられ、リヤサスペンション装置５は、その上
下端部の支点軸６，７を介して、上記車体フレーム３と
リンク機構４との間に取り付けられる。これにより、上
記スイングアーム２の上下動が、上記リンク機構４を介
して上記リヤサスペンション装置５で緩衝される。2. Description of the Related Art In a currently used rear wheel suspension system for a two-wheeled vehicle, as shown in FIG. 7, a link mechanism is provided between a swing arm 2 supporting a rear wheel 1 and a vehicle body frame 3. 4 is provided, and the rear suspension device 5 is attached between the vehicle body frame 3 and the link mechanism 4 via the fulcrum shafts 6 and 7 at the upper and lower ends thereof. As a result, the vertical movement of the swing arm 2 is damped by the rear suspension device 5 via the link mechanism 4.
【０００３】上記リンク機構４は、支点軸１３で上記車
体フレーム３に揺動自在に連結されるアーム８と、この
アーム８の中間部に下端が支点軸１２で連結され、上端
が支点軸１１で上記スイングアーム２のブラケット１０
に連結されたロッド９とからなる。この場合の後輪１の
車軸１ａの上下動のストロークとリヤサスペンション装
置５の緩衝ストロークとの比（以下「レバー比」とい
う）は、２輪車の操縦性を左右するが、最適なレバー比
は車重やタイヤの種類などによって異なるので、適宜変
更できるのが望ましい。The link mechanism 4 has an arm 8 swingably connected to the vehicle body frame 3 by a fulcrum shaft 13, a lower end connected to a middle part of the arm 8 by a fulcrum shaft 12, and an upper end connected to the fulcrum shaft 11. Then, the bracket 10 of the swing arm 2
And a rod 9 connected to. In this case, the ratio of the vertical stroke of the axle 1a of the rear wheel 1 to the buffer stroke of the rear suspension device 5 (hereinafter referred to as "lever ratio") influences the maneuverability of the two-wheeled vehicle, but the optimum lever ratio Since it depends on the weight of the vehicle and the type of tire, it is desirable that it can be changed appropriately.
【０００４】[0004]
【発明が解決しようとする課題】しかし、上記２輪車の
後輪懸架装置では、リンク機構４の各支点軸６，７，１
１，１２が位置固定されているため、上記レバー比を変
更したい場合、アーム８やロッド９などを別寸法のもの
に交換しなければならず、レバー比の選択設定が容易で
ない。However, in the rear wheel suspension system of the above two-wheeled vehicle, each fulcrum shaft 6, 7, 1 of the link mechanism 4 is used.
Since the positions 1 and 12 are fixed, if it is desired to change the lever ratio, it is necessary to replace the arm 8, the rod 9 or the like with another size, and it is not easy to selectively set the lever ratio.
【０００５】これを解決するものとして、上記ロッド９
の下端をアーム８に連結する支点軸１２の位置や、リヤ
サスペンション装置５の下端をアーム８の後端に連結す
る支点軸７の位置や、ロッド９の上端をスイングアーム
２のブラケット１０に連結する支点軸１１の位置など
を、偏心軸を介在させて選択的に変更設定できるように
したものも提案されている（実開昭５８−１９４９８５
号参照）。しかし、この場合、その位置選択設定機構の
ために、リヤサスペンション装置５に掛かるばね下荷重
が増大し、リヤサスペンション装置５の追従性により緩
衝効果が低下する可能性がある。As a solution to this, the rod 9 is used.
Position of the fulcrum shaft 12 connecting the lower end of the arm 8 to the arm 8, position of the fulcrum shaft 7 connecting the lower end of the rear suspension device 5 to the rear end of the arm 8, and connecting the upper end of the rod 9 to the bracket 10 of the swing arm 2. There is also proposed a structure in which the position of the fulcrum shaft 11 and the like can be selectively changed and set by interposing an eccentric shaft (Actual No. Sho 58-194985).
No.). However, in this case, due to the position selection setting mechanism, the unsprung load applied to the rear suspension device 5 increases, and the cushioning effect may decrease due to the followability of the rear suspension device 5.
【０００６】また、アーム８の中間部などに偏心軸など
からなる位置選択設定機構を設けた構成では、アーム８
やロッド９などの各連結部材も取り外さないと、偏心軸
の交換や、位置の変更を行えないから、レバー比の選択
設定作業が容易でない。Further, in the structure in which a position selection setting mechanism including an eccentric shaft is provided in the middle portion of the arm 8 or the like, the arm 8
The eccentric shaft cannot be replaced or the position cannot be changed unless the connecting members such as the rod 9 and the rod 9 are also removed, so that it is not easy to select and set the lever ratio.
【０００７】この発明は上述のような実情に鑑みてなさ
れたもので、優れた緩衝効果を維持しながら容易にレバ
ー比を選択設定できる２輪車の後輪懸架装置を提供する
ことを目的とする。The present invention has been made in view of the above situation, and an object thereof is to provide a rear wheel suspension system for a two-wheeled vehicle in which the lever ratio can be easily selected and set while maintaining an excellent cushioning effect. To do.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、請求項１の２輪車の後輪懸架装置は、後輪を支持す
るスイングアームと車体フレームとの間に設けられたリ
ンク機構を有し、このリンク機構のうちの上記車体フレ
ームに隣接するアームを車体フレームに対し揺動自在に
連結する支点軸と、この支点軸を支持する軸支部を有
し、この軸支部の軸心から偏心した複数の位置で上記支
点軸を車体フレームに連結する偏心連結手段とを備えて
いる。In order to achieve the above object, a rear wheel suspension system for a two-wheeled vehicle according to claim 1 is a link mechanism provided between a swing arm for supporting the rear wheel and a vehicle body frame. And a fulcrum shaft for swingably connecting the arm adjacent to the vehicle body frame of the link mechanism to the vehicle body frame, and a shaft supporting portion for supporting the fulcrum shaft. And eccentric connecting means for connecting the fulcrum shaft to the vehicle body frame at a plurality of eccentric positions.
【０００９】この後輪懸架装置によれば、上記アームを
車体フレームに揺動自在に連結する支点軸を、偏心連結
手段によりその軸支部の複数の偏心位置で選択して支持
できるので、リヤサスペンション装置のばね下荷重を増
大させることなく、容易にレバー比を選択設定できる。According to this rear wheel suspension device, the fulcrum shaft for swingably connecting the arm to the vehicle body frame can be selected and supported by the eccentric connecting means at a plurality of eccentric positions of the shaft supporting portion. The lever ratio can be easily selected and set without increasing the unsprung load of the device.
【００１０】請求項２の２輪車の後輪懸架装置では、上
記軸支部が上記支点軸を偏心した位置で支持しており、
上記偏心連結手段は、車体フレームに固定された第１ブ
ラケットと、上記軸支部を有しこの軸支部の軸心回りの
複数の回転位置で上記第１ブラケットに装着可能な第２
ブラケットとを有している。この後輪懸架装置によれ
ば、車体フレームに固定された第１ブラケットに対し
て、第２ブラケットをその軸支部の軸心回りに回転させ
て選択位置に位置固定させることにより、上記支点軸の
位置を選択できる。また、第２ブラケットを別のものに
取り替えることによっても、上記支点軸の位置を選択設
定できる。In the rear wheel suspension system for a two-wheeled vehicle according to claim 2, the shaft supporting portion supports the fulcrum shaft at an eccentric position,
The eccentric connecting means includes a first bracket fixed to a vehicle body frame, and a second support which has the shaft support and can be mounted on the first bracket at a plurality of rotational positions around the shaft center of the shaft support.
And a bracket. According to this rear wheel suspension device, by rotating the second bracket around the axis of the shaft supporting portion of the first bracket fixed to the vehicle body frame and fixing the second bracket in a selected position, the fulcrum shaft is fixed. You can choose the position. Also, the position of the fulcrum shaft can be selectively set by replacing the second bracket with another one.
【００１１】請求項３の２輪車の後輪懸架装置では、上
記第１ブラケットが円周上に等間隔で配置された複数の
第１取付孔を有し、上記第２ブラケットが上記第１取付
孔に合致する複数の第２取付孔を有し、上記第１および
第２取付孔に挿通された締結部材によって第２ブラケッ
トが第１ブラケットに着脱可能に装着されている。この
後輪懸架装置によれば、第１ブラケットの第１取付孔に
対して、第２ブラケットの第２取付孔を位置変えして合
致させ、合致させた第１および第２取付孔に締結部材を
挿通させることによって、第１ブラケットに第２ブラケ
ットを装着させ、これにより上記支点軸の位置を選択設
定できる。In the rear wheel suspension system according to a third aspect of the present invention, the first bracket has a plurality of first mounting holes arranged at equal intervals on the circumference, and the second bracket has the first mounting hole. The second bracket is detachably attached to the first bracket by a fastening member that has a plurality of second attachment holes that match the attachment holes and is inserted through the first and second attachment holes. According to this rear wheel suspension device, the second mounting hole of the second bracket is repositioned to match the first mounting hole of the first bracket, and the fastening members are fitted into the matched first and second mounting holes. The second bracket can be attached to the first bracket by inserting the bracket, and thereby the position of the fulcrum shaft can be selectively set.
【００１２】請求項４の２輪車の後輪懸架装置では、上
記第１ブラケットが左右１対の支持部とこれらを連結す
る連結部を有し、各支持部に上記第２ブラケットが装着
されている。この後輪懸架装置によれば、第１ブラケッ
トが単一部品となるので、左右１対に分割した場合と比
較して、第１ブラケットを車体フレームに固定する作業
が容易となる。According to another aspect of the present invention, there is provided a rear wheel suspension device for a two-wheeled vehicle, wherein the first bracket has a pair of left and right supporting portions and a connecting portion for connecting these, and the second bracket is mounted on each supporting portion. ing. According to this rear wheel suspension device, since the first bracket is a single component, the work of fixing the first bracket to the vehicle body frame is easier than in the case where the first bracket is divided into a left and right pair.
【００１３】[0013]
【発明の実施の形態】以下、この発明の実施の形態を図
面に基づいて説明する。図１は、この発明の一実施形態
である２輪車の後輪懸架装置の側面図を示す。この後輪
懸架装置では、後輪１を支持するスイングアーム２と車
体フレーム３との間にリンク機構４が設けられ、リヤサ
スペンション装置５は、その上下端部の支点軸６，７を
介して上記リンク機構４と車体フレーム３との間に取り
付けられる。これにより、上記スイングアーム２の上下
動が、上記リンク機構４を介して上記リヤサスペンショ
ン装置５で緩衝される。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a rear wheel suspension system for a two-wheeled vehicle according to an embodiment of the present invention. In this rear wheel suspension device, a link mechanism 4 is provided between the swing arm 2 supporting the rear wheel 1 and the vehicle body frame 3, and the rear suspension device 5 is provided with fulcrum shafts 6 and 7 at the upper and lower ends thereof. It is attached between the link mechanism 4 and the body frame 3. As a result, the vertical movement of the swing arm 2 is damped by the rear suspension device 5 via the link mechanism 4.
【００１４】上記リンク機構４は、車体フレーム３に隣
接する１本のアーム８と、このアーム８の中間部と上記
スイングアーム２に設けられたブラケット１０との間を
支点軸１１，１２を介して連結する左右１対のロッド９
とからなる。上記アーム８は、その前端部が支点軸１３
により上記車体フレーム３に揺動自在に連結される。そ
の支点軸１３は、偏心連結手段２１によって車体フレー
ム３に連結される。The link mechanism 4 has one arm 8 adjacent to the vehicle body frame 3, and an intermediate portion of the arm 8 and a bracket 10 provided on the swing arm 2 via fulcrum shafts 11 and 12. Pair of left and right rods 9 to be connected together
Consists of The front end portion of the arm 8 is a fulcrum shaft 13
Is swingably connected to the body frame 3. The fulcrum shaft 13 is connected to the vehicle body frame 3 by the eccentric connecting means 21.
【００１５】上記偏心連結手段２１は、図３に示すよう
に、車体フレーム３のロアクロスパイプ２０に固定され
た第１ブラケット２２と、図２に斜視図で示すように、
上記第１ブラケット２２に装着可能な第２ブラケット２
３とを有する。上記第１ブラケット２２は、左右１対の
支持部２２ａとこれらを連結する連結部２２ｂとを有
し、左右の各支持部２２ａには上記第２ブラケット２３
の円柱状軸支部２３ａを嵌合させる丸孔２４がそれぞれ
設けられている。別に上記各支持部２２ａには、上記丸
孔２４と同心円上に等間隔（この例では円周角１２０°
の等間隔）で複数のねじ孔からなる第１取付孔２５が配
置されている。The eccentric connecting means 21 is, as shown in FIG. 3, a first bracket 22 fixed to the lower cross pipe 20 of the vehicle body frame 3, and, as shown in a perspective view in FIG.
Second bracket 2 attachable to the first bracket 22
And 3. The first bracket 22 has a pair of left and right supporting portions 22a and a connecting portion 22b that connects the pair of supporting portions 22a. The left and right supporting portions 22a each have the second bracket 23.
Round holes 24 into which the columnar shaft support portions 23a are fitted are respectively provided. Separately, in each of the support portions 22a, the circular holes 24 are concentric with each other at equal intervals (circumferential angle 120 ° in this example).
The first mounting holes 25 composed of a plurality of screw holes are arranged at equal intervals.
【００１６】上記第２ブラケット２３は上記軸支部２３
ａとその外周のフランジ部２３ｂとからなり、上記第１
ブラケット２２の左右の支持部２２ａに対応付けて１対
用意される。第２ブラケット２２の軸支部２３ａには、
その軸心Ｃから偏心した位置に、ボルトからなる上記支
点軸１３を支持する軸支孔２６が設けられている。ま
た、第２ブラケット２３の上記フランジ部２３ｂには、
上記第１ブラケット２２のねじ孔２５に合致する複数の
ねじ挿通孔からなる取付孔２７が配置されている。これ
らねじ挿通孔２７は、上記軸支部２３ａと同心円上に等
間隔（この例では円周角１２０°の等間隔）で配置され
ている。The second bracket 23 has the shaft support 23.
a and a flange portion 23b on the outer periphery thereof,
One pair is prepared in association with the left and right support portions 22a of the bracket 22. The shaft support 23a of the second bracket 22 has
A shaft support hole 26 for supporting the fulcrum shaft 13 made of a bolt is provided at a position eccentric from the shaft center C. In addition, the flange portion 23b of the second bracket 23,
A mounting hole 27, which is composed of a plurality of screw insertion holes, which match the screw hole 25 of the first bracket 22 is arranged. These screw insertion holes 27 are arranged on a circle concentric with the shaft support portion 23a at equal intervals (in this example, at equal circumferential angles of 120 °).
【００１７】上記アーム８は、その前端部に支持孔３５
を有し、その支持孔３５には、図４に示すように、上記
支点軸１３を挿通させるスリーブ３６と、そのスリーブ
３６を回転自在に支持するベアリング３７が装着されて
いる。The arm 8 has a support hole 35 at the front end thereof.
As shown in FIG. 4, a sleeve 36 into which the fulcrum shaft 13 is inserted and a bearing 37 that rotatably supports the sleeve 36 are mounted in the support hole 35.
【００１８】上記偏心連結手段２１は次の手順で組み立
てられる。先ず、第１ブラケット２２の左右の各支持部
２２ａの丸孔２４に、対応する各第２ブラケット２３の
軸支部２３ａをそれぞれ嵌合させ、第２ブラケット２３
の各ねじ挿通孔２７に挿通させたビス３８を、それらの
ねじ挿通孔２７に合致する第１ブラケット２２の各ねじ
孔２５にねじ込んで、第２ブラケット２３を第１ブラケ
ット２２の左右の各支持部２２ａに装着する。このと
き、左右の第２ブラケット２３は、これらの軸支部２３
ａの各軸支孔２６が所定の偏心位置で向かい合うように
回転位置を選択設定する。The eccentric connecting means 21 is assembled in the following procedure. First, the shaft support portions 23 a of the corresponding second brackets 23 are fitted into the round holes 24 of the left and right support portions 22 a of the first bracket 22, respectively, and the second bracket 23
The screws 38 inserted into the screw insertion holes 27 are screwed into the screw holes 25 of the first bracket 22 that match the screw insertion holes 27, and the second bracket 23 is supported on the left and right sides of the first bracket 22. It is attached to the portion 22a. At this time, the left and right second brackets 23 are attached to the shaft support portions 23.
The rotational position is selected and set so that the shaft support holes 26 of a face each other at a predetermined eccentric position.
【００１９】次に、ボルトからなる支点軸１３を、一方
の第２ブラケット２３の軸支孔２６からアーム８のスリ
ーブ３６の中空部にわたって挿通させた後、他方の第２
ブラケット２３の軸支孔２６を貫通させ、その貫通端部
にナット３９を螺合させて、支点軸１３を偏心連結手段
２１に取りつける。このとき、上記１対の支持部２２ａ
は、単一のブラケット２２に一体形成されているから、
分割された左右１対の支持部を用いる場合のように支持
部に設けた軸支孔同志の芯合せが不要になるので、組立
作業性がよい。Next, the fulcrum shaft 13 made of a bolt is inserted from the shaft supporting hole 26 of the one second bracket 23 through the hollow portion of the sleeve 36 of the arm 8, and then the other second shaft.
The fulcrum shaft 13 is attached to the eccentric connecting means 21 by penetrating the shaft supporting hole 26 of the bracket 23 and screwing a nut 39 into the penetrating end. At this time, the pair of supporting portions 22a
Is integrally formed on the single bracket 22,
As in the case of using a pair of left and right support parts that are divided, it is not necessary to align the shaft support holes provided in the support parts, so that the assembling workability is good.
【００２０】上記第１ブラケット２２に対して、第２ブ
ラケット２３を、その軸支孔２６の偏心位置が異なるよ
うに回転位置を変えて装着することにより、図５（Ａ）
〜（Ｃ）のように、支点軸１３を３種類の異なる位置に
選択設定できる。すなわち、この選択設定により、図５
（Ａ）のように、支持軸１３を最前方に位置させると、
レバー比（後輪ストローク／緩衝ストローク）が大きく
なり、第２ブラケット２３を回転させて図５（Ｂ）のよ
うに、支持軸１３を中間部に位置させると、レバー比が
若干小さくなり、第２ブラケット２３をさらに回転させ
て図５（Ｃ）のように、支持軸１３を最後方に位置させ
ると、レバー比がさらに小さくなる。By mounting the second bracket 23 on the first bracket 22 while changing the rotational position so that the eccentric position of the shaft support hole 26 is different, FIG.
As shown in (C), the fulcrum shaft 13 can be selectively set at three different positions. That is, according to this selection setting, FIG.
As shown in (A), when the support shaft 13 is positioned at the forefront,
When the lever ratio (rear wheel stroke / buffer stroke) becomes large and the second bracket 23 is rotated to position the support shaft 13 at the intermediate portion as shown in FIG. 5 (B), the lever ratio becomes slightly smaller, When the two brackets 23 are further rotated to bring the support shaft 13 to the rearmost position as shown in FIG. 5C, the lever ratio is further reduced.
【００２１】図６は、上記後輪懸架装置における後輪ス
トロークとレバー比との関係を示すグラフである。同図
において、特性曲線Ａ，Ｂ，Ｃはそれぞれ上記支点軸１
３の位置を図５（Ａ）〜（Ｂ）のように選択設定した場
合を示す。このように、上記支点軸１３の位置を選択設
定することにより、レバー比はそれぞれ異なる値を示
す。図５の横軸に示された後輪ストロークの原点は、後
輪の最下位の位置、つまり後輪１に荷重が負荷されてい
ない場合の車体フレームに対する後輪の位置である。特
性曲線Ａ，Ｂ，Ｃはいずれも右下がりであり、これは、
後輪の車体フレームに対する位置が上方へ移動するほ
ど、レバー比が下がって、リヤサスペンション装置５の
効きが強くなることを示しており、好ましい特性であ
る。FIG. 6 is a graph showing the relationship between the rear wheel stroke and the lever ratio in the above rear wheel suspension system. In the figure, the characteristic curves A, B and C are respectively the above-mentioned fulcrum axis 1
5 shows a case where the position 3 is selected and set as shown in FIGS. Thus, by selectively setting the position of the fulcrum shaft 13, the lever ratios show different values. The origin of the rear wheel stroke shown on the horizontal axis of FIG. 5 is the lowest position of the rear wheel, that is, the position of the rear wheel with respect to the vehicle body frame when no load is applied to the rear wheel 1. The characteristic curves A, B and C are all sloping down to the right.
It is shown that the higher the position of the rear wheel with respect to the vehicle body frame, the lower the lever ratio and the stronger the effect of the rear suspension device 5, which is a preferable characteristic.
【００２２】このように、上記後輪懸架装置では、可動
体であるリンク機構４の部分に選択設定のための機構が
付加されないので、リヤサスペンション装置５のばね下
荷重を増大させない。したがって、リヤサスペンション
装置５の追従性が低下せず、優れた緩衝効果を得ること
ができる。また、アーム８、ロッド９などの連結部材を
取り外すことなく、車体フレーム３に設定された偏心連
結手段を操作するだけで、レバー比の選択設定を容易に
行うことができる。なお、上記第２ブラケット２３とし
て、その軸支孔２６の偏心位置が異なるものに取り替え
た場合には、上記支点軸１３の位置を更に多様に選択設
定することができる。As described above, in the above-mentioned rear wheel suspension device, since the mechanism for selecting and setting is not added to the link mechanism 4 which is a movable body, the unsprung load of the rear suspension device 5 is not increased. Therefore, the followability of the rear suspension device 5 does not deteriorate, and an excellent cushioning effect can be obtained. Further, the lever ratio can be easily selected and set only by operating the eccentric connecting means set on the body frame 3 without removing the connecting members such as the arm 8 and the rod 9. When the second bracket 23 is replaced with one in which the eccentric position of the shaft support hole 26 is different, the position of the fulcrum shaft 13 can be selected and set in various ways.
【００２３】[0023]
【発明の効果】以上のように、この発明の２輪車の後輪
懸架装置によれば、スイングアームと車体フレームとの
間に設けられたリンク機構のうち、上記車体フレームに
隣接するアームを車体フレームに対し揺動自在に連結す
る支点軸と、この支点軸を支持する軸支部を有し、この
軸支部の軸心から偏心した複数の位置で上記支点軸を車
体フレームに連結する偏心連結手段とを備えているか
ら、偏心連結手段により、その軸支部の複数の偏心位置
で選択して上記支点軸を支持できる。したがって、リヤ
サスペンション装置のばね下荷重を増大させることな
く、つまり、優れた緩衝効果を維持しながら、容易にレ
バー比を選択設定できる。As described above, according to the rear wheel suspension system for a two-wheeled vehicle of the present invention, among the link mechanisms provided between the swing arm and the vehicle body frame, the arm adjacent to the vehicle body frame is An eccentric connection for connecting the fulcrum shaft to the body frame at a plurality of positions eccentric from the shaft center of the fulcrum shaft and a fulcrum shaft for swingably connecting to the body frame and for supporting the fulcrum shaft. The eccentric connecting means can support the fulcrum shaft at a plurality of eccentric positions of the shaft supporting portion by the eccentric connecting means. Therefore, the lever ratio can be easily selected and set without increasing the unsprung load of the rear suspension device, that is, while maintaining an excellent cushioning effect.
【図１】この発明の一実施形態である２輪車の後輪懸架
装置を示す側面図である。FIG. 1 is a side view showing a rear wheel suspension system for a two-wheeled vehicle according to an embodiment of the present invention.
【図２】同後輪懸架装置における偏心連結手段を示す分
解斜視図である。FIG. 2 is an exploded perspective view showing eccentric connecting means in the rear wheel suspension system.
【図３】同偏心連結手段を構成する第１ブラケットの取
付状態を示す側面図である。FIG. 3 is a side view showing a mounted state of a first bracket constituting the eccentric connecting means.
【図４】同偏心連結手段の一部を破断して示す背面図で
ある。FIG. 4 is a rear view showing a part of the eccentric connecting means in a cutaway manner.
【図５】（Ａ）〜（Ｃ）は上記後輪懸架装置におけるリ
ンク機構の各レバー比選択設定状態を示す側面図であ
る。5 (A) to 5 (C) are side views showing respective lever ratio selective setting states of the link mechanism in the rear wheel suspension device.
【図６】上記各レバー比選択設定状態におけるレバー比
と後輪ストロークとの関係を示すグラフである。FIG. 6 is a graph showing a relationship between a lever ratio and a rear wheel stroke in each lever ratio selection setting state.
【図７】従来例を示す側面図である。FIG. 7 is a side view showing a conventional example.
１…後輪、２…スイングアーム、３…車体フレーム、４
…リンク機構、５…リヤサスペンション装置、６，７…
支点軸、８…アーム、１３…支点軸、２１…偏心連結手
段、２２…第１ブラケット、２２ａ…支持部、２２ｂ…
連結部、２３…第２ブラケット、２３ａ…軸支部、２５
…ねじ孔（第１取付孔）、２７…ねじ挿通孔（第２取付
孔）、３８…ビス（締結部材）、Ｃ…軸心1 ... rear wheel, 2 ... swing arm, 3 ... body frame, 4
... Link mechanism, 5 ... Rear suspension device, 6, 7 ...
Fulcrum shaft, 8 ... Arm, 13 ... fulcrum shaft, 21 ... eccentric connecting means, 22 ... first bracket, 22a ... support part, 22b ...
Connection part, 23 ... Second bracket, 23a ... Shaft support part, 25
... screw hole (first mounting hole), 27 ... screw insertion hole (second mounting hole), 38 ... screw (fastening member), C ... axial center
Claims (4)
体フレーム３との間にリンク機構４が設けられ、リヤサ
スペンション装置５がその上下端部の支点軸６，７を介
して上記リンク機構４と車体フレーム３との間に取り付
けられ、上記スイングアーム２の上下動を上記リンク機
構４を介して上記サスペンション装置５で緩衝する２輪
車の後輪懸架装置であって、 上記リンク機構４のうち、上記車体フレーム３に隣接す
るアーム８を車体フレーム３に対し揺動自在に連結する
支点軸１３と、 この支点軸１３を支持する軸支部２３ａを有し、この軸
支部２３ａの軸心から偏心した複数の位置で上記支点軸
１３を車体フレーム３に連結する偏心連結手段２１とを
備えた２輪車の後輪懸架装置。1. A link mechanism 4 is provided between a swing arm 2 supporting a rear wheel 1 and a vehicle body frame 3, and a rear suspension device 5 is provided with the link mechanism 4 via fulcrum shafts 6 and 7 at its upper and lower ends. 4 is a rear wheel suspension device of a two-wheeled vehicle mounted between the vehicle body frame 3 and the vehicle body frame 3 to buffer the vertical movement of the swing arm 2 by the suspension device 5 via the link mechanism 4. Among these, there is a fulcrum shaft 13 for swingably connecting the arm 8 adjacent to the vehicle body frame 3 to the vehicle body frame 3, and a shaft supporting portion 23a for supporting the fulcrum shaft 13, and the shaft center of the shaft supporting portion 23a. A rear wheel suspension system for a two-wheeled vehicle, comprising:
上記支点軸１３を偏心した位置で支持しており、上記偏
心連結手段２１は、車体フレーム３に固定された第１ブ
ラケット２２と、上記軸支部２３ａを有しこの軸支部２
３ａの軸心回りの複数の回転位置で上記第１ブラケット
２２に装着可能な第２ブラケット２３とを有している２
輪車の後輪懸架装置。2. The shaft supporting portion 23a supports the fulcrum shaft 13 at an eccentric position, and the eccentric connecting means 21 includes a first bracket 22 fixed to a vehicle body frame 3, and This shaft supporting portion 2 has a shaft supporting portion 23a.
2a having a second bracket 23 attachable to the first bracket 22 at a plurality of rotational positions around the axis of 3a.
Rear wheel suspension system for wheeled vehicles.
２２は、円周上に等間隔で配置された複数の第１取付孔
２５を有し、上記第２ブラケット２３は、上記第１取付
孔２５に合致する複数の第２取付孔２７を有し、上記第
１および第２取付孔２５，２７に挿通された締結部材３
８によって第２ブラケット２３が第１ブラケット２２に
着脱可能に装着されている２輪車の後輪懸架装置。3. The second bracket 23 according to claim 2, wherein the first bracket 22 has a plurality of first mounting holes 25 arranged at equal intervals on the circumference, and the second bracket 23 has the first mounting holes. Fastening member 3 having a plurality of second mounting holes 27 matching 25 and being inserted through the first and second mounting holes 25, 27.
A rear wheel suspension device for a two-wheeled vehicle in which the second bracket 23 is detachably attached to the first bracket 22 by 8.
ラケット２２は、左右１対の支持部２２ａとこれらを連
結する連結部２２ｂとを有し、各支持部２２ａに上記第
２ブラケット２３が装着されている２輪車の後輪懸架装
置。4. The second bracket 23 according to claim 2 or 3, wherein the first bracket 22 has a pair of left and right supporting portions 22a and a connecting portion 22b that connects the supporting portions 22a to each other, and the second bracket 23 is attached to each supporting portion 22a. Rear wheel suspension system for two-wheeled vehicles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7259200A JP2886809B2 (en) | 1995-09-11 | 1995-09-11 | Rear wheel suspension for motorcycles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7259200A JP2886809B2 (en) | 1995-09-11 | 1995-09-11 | Rear wheel suspension for motorcycles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0976979A true JPH0976979A (en) | 1997-03-25 |
| JP2886809B2 JP2886809B2 (en) | 1999-04-26 |
Family
ID=17330780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7259200A Expired - Fee Related JP2886809B2 (en) | 1995-09-11 | 1995-09-11 | Rear wheel suspension for motorcycles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2886809B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002205679A (en) * | 2001-01-10 | 2002-07-23 | Honda Motor Co Ltd | Body frame structure for motorcycle |
| EP3805087B1 (en) * | 2019-10-11 | 2022-06-15 | Yamaha Hatsudoki Kabushiki Kaisha | Manufacturing method of body frame |
-
1995
- 1995-09-11 JP JP7259200A patent/JP2886809B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002205679A (en) * | 2001-01-10 | 2002-07-23 | Honda Motor Co Ltd | Body frame structure for motorcycle |
| JP4627370B2 (en) * | 2001-01-10 | 2011-02-09 | 本田技研工業株式会社 | Body frame structure for motorcycles |
| EP3805087B1 (en) * | 2019-10-11 | 2022-06-15 | Yamaha Hatsudoki Kabushiki Kaisha | Manufacturing method of body frame |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2886809B2 (en) | 1999-04-26 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |