JP2000095172A - Rear-fork attachment structure of motorcycle - Google Patents
Rear-fork attachment structure of motorcycleInfo
- Publication number
- JP2000095172A JP2000095172A JP10272362A JP27236298A JP2000095172A JP 2000095172 A JP2000095172 A JP 2000095172A JP 10272362 A JP10272362 A JP 10272362A JP 27236298 A JP27236298 A JP 27236298A JP 2000095172 A JP2000095172 A JP 2000095172A
- Authority
- JP
- Japan
- Prior art keywords
- rear fork
- motorcycle
- body frame
- fork
- hole
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は後輪を車幅方向に移
動させる二輪車のリヤフォーク取付構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear fork mounting structure for a motorcycle for moving a rear wheel in a vehicle width direction.
【０００２】[0002]
【従来の技術】二輪車の後輪を左右（車幅方向）へ移動
させる技術としては、例えば、特開平７−２３７５７４
号公報「自動二輪車の操向装置」が知られている。上記
技術は、車輪をコーナリング時に車幅方向に強制的にス
ライドさせて路面接地点を車体中心地点を車体中心線に
近づくようにし、これによって、向心力を高めバンクの
度合いを高めずとも自動二輪車の旋回性能をよくするも
のであり、同公報の図１及び図２に示される通り、車体
フレーム４にリヤスイングアーム１６Ｌ，１６Ｒ（便宜
上符号を変えた。）を取付け、これらのリヤスイングア
ーム１６Ｌ，１６Ｒにリヤアクスルシャフト１８を固定
し、このリヤアクスルシャフト１８に回転自在にホイー
ルハブ１９を取付け、このホイールハブ１９に軸方向に
ホイール２２を摺動可能に取付けるとともに、ホイール
ハブ１９とともにホイール２２を一体的に回転可能に
し、このホイール２２及びタイヤ１２ａで後輪１２を構
成し、ホイール２２をリヤディスクブレーキ４３で制動
し、ホイールハブ１９に対するホイール２２の摺動を摺
動制御部２４で制御するものである。2. Description of the Related Art As a technique for moving a rear wheel of a two-wheeled vehicle left and right (in the width direction of a vehicle), for example, Japanese Patent Application Laid-Open No. 7-237574.
Japanese Patent Application Publication No. JP-A-2005-115125 discloses a motorcycle steering apparatus. The above technology forcibly slides the wheels in the vehicle width direction at the time of cornering so that the ground contact point of the road approaches the vehicle center line to the vehicle center line, thereby increasing the centripetal force and increasing the degree of banking without increasing the degree of banking. As shown in FIGS. 1 and 2 of the publication, rear swing arms 16L and 16R (signs are changed for convenience) are attached to the body frame 4 to improve the turning performance. A rear axle shaft 18 is fixed to the rear axle 16R, a wheel hub 19 is rotatably mounted on the rear axle shaft 18, a wheel 22 is slidably mounted on the wheel hub 19 in the axial direction, and the wheel 22 is integrated with the wheel hub 19 integrally. The rear wheel 12 is constituted by the wheel 22 and the tire 12a. Braking 2 with rear disc brake 43, and controls the sliding of the wheel 22 relative to the wheel hub 19 by sliding the control unit 24.
【０００３】[0003]
【発明が解決しようとする課題】上記技術では、ホイー
ル２２、即ち後輪１２を移動させるために、回転するホ
イールハブ１９に一体的に回転可能に、且つ摺動可能に
取付けなければならず、また、リヤディスクブレーキ４
３も軸方向に移動させなけれならず、ホイールハブ１９
とホイール２２との結合や、リヤディスクブレーキ４３
の支持に高度な技術を必要とする。In the above technique, in order to move the wheel 22, that is, the rear wheel 12, it must be integrally rotatably and slidably mounted on the rotating wheel hub 19. Also, the rear disc brake 4
3 must also be moved in the axial direction.
And the rear disc brake 43
Requires advanced technology to support
【０００４】更に、ホイール２２やリヤディスクブレー
キ４３を移動させるための摺動制御部２４が必要とな
り、後輪１２の支持部が大型になるというという不都合
がある。更にまた、路面から後輪１２に外力が作用した
場合に、この外力は、後輪１２からリヤスイングアーム
１６Ｌ，１６Ｒを介して直ちに車体フレーム４に伝わ
り、好ましくない。そこで、本発明の目的は、簡単且つ
コンパクトな構造で後輪を車幅方向へ移動することがで
き、また、路面から後輪に作用する外力が車体フレーム
に伝わるのを緩衝することができる二輪車のリヤフォー
ク取付構造を提供することにある。Further, a sliding control unit 24 for moving the wheel 22 and the rear disc brake 43 is required, and there is a disadvantage that the supporting portion of the rear wheel 12 becomes large. Furthermore, when an external force acts on the rear wheel 12 from the road surface, the external force is immediately transmitted from the rear wheel 12 to the vehicle body frame 4 via the rear swing arms 16L and 16R, which is not preferable. Therefore, an object of the present invention is to provide a two-wheeled vehicle that can move the rear wheel in the vehicle width direction with a simple and compact structure, and can buffer transmission of an external force acting on the rear wheel from the road surface to the vehicle body frame. And a rear fork mounting structure.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に本発明の請求項１は、後輪を支えるリヤフォークを、
上下方向にスイング可能に且つ、車幅方向に一定距離だ
け移動可能に車体フレームに取付け、この車体フレーム
とリヤフォークとの間に弾性体を介在させた。車体にリ
ヤフォークを車幅方向に移動可能にすることで、簡単な
構造で且つコンパクトに後輪を移動させることができ
る。また、弾性体で、路面から後輪、リヤフォークを介
して車体フレームに外力が伝わるのを緩衝することがで
き、二輪車の設計自由度を増すことができる。According to one aspect of the present invention, a rear fork for supporting a rear wheel is provided.
The vehicle was mounted on a vehicle body frame so as to be able to swing up and down and to move a predetermined distance in the vehicle width direction, and an elastic body was interposed between the vehicle body frame and a rear fork. By making the rear fork movable in the vehicle width direction on the vehicle body, the rear wheel can be moved with a simple structure and compactly. Further, the elastic body can buffer the transmission of an external force from the road surface to the vehicle body frame via the rear wheel and the rear fork, so that the degree of freedom in designing the motorcycle can be increased.
【０００６】[0006]
【発明の実施の形態】本発明の実施の形態を添付図に基
づいて以下に説明する。なお、図面は符号の向きに見る
ものとする。図１は本発明に係る二輪車のリヤフォーク
取付構造を採用した自動二輪車の側面図であり、自動二
輪車１は、車体フレーム２の前部に取付けたヘッドパイ
プ３と、このヘッドパイプ３に回転可能に取付けたフロ
ントフォーク４と、このフロントフォーク４の下部に回
転可能に取付けた前輪５と、この前輪５の上部を覆うフ
ロントフェンダ６とからなる。Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a side view of a motorcycle employing a motorcycle rear fork mounting structure according to the present invention. The motorcycle 1 has a head pipe 3 mounted on a front portion of a body frame 2 and a rotatable head pipe 3. , A front wheel 5 rotatably attached to a lower portion of the front fork 4, and a front fender 6 covering an upper portion of the front wheel 5.
【０００７】また、自動二輪車１は、車体フレーム２の
上部に設けた燃料タンク７と、この燃料タンク７の後方
に配置したシート８と、これら燃料タンク７及びシート
８の下方に配置したエンジン及び変速機からなるパワー
ユニット１１と、このパワーユニット１１後方の車体フ
レーム２にスイング可能に取付けたリヤフォーク１２
と、このリヤフォーク１２の後端に回転可能に取付ける
とともに上記パワーユニット１１で駆動する後輪１３
と、この後輪１３の上部を覆うリヤフェンダ１４とから
なる。The motorcycle 1 has a fuel tank 7 provided on the upper part of the body frame 2, a seat 8 provided behind the fuel tank 7, an engine provided below the fuel tank 7 and the seat 8, A power unit 11 composed of a transmission, and a rear fork 12 swingably attached to the body frame 2 behind the power unit 11
And a rear wheel 13 rotatably mounted on the rear end of the rear fork 12 and driven by the power unit 11.
And a rear fender 14 that covers an upper portion of the rear wheel 13.
【０００８】ここで、１３ａは後輪軸、１５はフロント
カウル、１６はリヤカウル、１７は排気管、１８はマフ
ラ、２１はリヤサスペンション、２２は車体フレーム２
にリヤフォーク１２をスイングさせるために取付けたピ
ボット軸である。Here, 13a is a rear wheel axle, 15 is a front cowl, 16 is a rear cowl, 17 is an exhaust pipe, 18 is a muffler, 21 is a rear suspension, and 22 is a body frame 2.
Is a pivot shaft attached to swing the rear fork 12.
【０００９】図２は本発明に係るリヤフォークの平面図
であり、リヤフォーク１２は、ピボット軸２２に取付け
るための前部取付部３１と、この前部取付部３１から後
方に延びる一対の前部アーム部３２，３２と、これらの
前部アーム部３２，３２のそれぞれから更に後方に延び
るフォークアーム部３３，３３と、これらのフォークア
ーム部３３，３３のそれぞれの後端に後輪軸１３ａを取
付けるために設けた後輪軸取付部３４と、左右の前部ア
ーム部３２，３２及び左右のフォークアーム部３３，３
３に渡したクロスメンバ３５とからなる。なお、３６は
チェーンガイドステーである。FIG. 2 is a plan view of a rear fork according to the present invention. The rear fork 12 has a front mounting portion 31 for mounting on a pivot shaft 22 and a pair of front forks extending rearward from the front mounting portion 31. Arm portions 32, 32, fork arm portions 33, 33 extending further rearward from the front arm portions 32, 32, and a rear wheel shaft 13a at the rear end of each of the fork arm portions 33, 33. A rear axle mounting portion 34 provided for mounting, left and right front arm portions 32, 32 and left and right fork arm portions 33, 3
3 and the cross member 35 passed to the third member. Reference numeral 36 denotes a chain guide stay.
【００１０】図３は本発明に係るリヤフォークの取付部
を示す断面図であり、リヤフォーク１２の前部取付部３
１に貫通孔４１を開け、この貫通孔４１の両端部に大径
孔４２，４２を形成し、貫通孔４１にニードルベアリン
グ４３，４３を嵌合し、大径孔４２，４２にそれぞれ弾
性体としてのＯリング４４を収納し、更に大径孔４２，
４２内にそれぞれスラストベアリング４５を収納し、こ
れらのニードルベアリング４３，４３、Ｏリング４４，
４４及びスラストベアリング４５，４５のそれぞれの内
周側にカラー４６を挿入し、このカラー４６の両端面に
サイドカラー４７，４７を当て、このサイドカラー４
７，４７の外周と大径孔４２，４２との間に雨水やちり
・ほこりの侵入を防ぐとともにグリーズを満たした貫通
孔４１及び大径孔４２，４２を密封するオイルシール４
８，４８を取付けたことを示す。FIG. 3 is a sectional view showing a mounting portion of the rear fork according to the present invention.
1, large holes 42, 42 are formed at both ends of the through hole 41, needle bearings 43, 43 are fitted in the through holes 41, and elastic bodies are respectively fitted in the large holes 42, 42. O-ring 44 is accommodated, and the large-diameter hole 42,
A thrust bearing 45 is housed in each of the needle bearings 43, 43, O-rings 44,
The collar 46 is inserted into the inner peripheral side of each of the thrust bearings 45, 45, and the side collars 47, 47 are applied to both end surfaces of the collar 46.
An oil seal 4 for preventing rainwater, dust, and dust from entering between the outer periphery of the large diameter holes 42, 42 and the large diameter holes 42, 42, and sealing the through hole 41 and the large diameter holes 42, 42 filled with grease.
Indicates that 8,48 has been installed.
【００１１】更に、図３は、サイドカラー４７，４７の
外側面が車体フレーム２Ｌ，２Ｒ（左右の車体フレーム
２，２を便宜上２Ｌ，２Ｒとする。）の内側に臨むよう
に車体フレーム２Ｌ，２Ｒ間にリヤフォーク１２の前部
取付部３１を介在させ、車体フレーム２Ｌ，２Ｒに開け
たピボット軸取付孔２ａ、カラー４６内及びピボット軸
取付孔２ａに順にボルトであるピボット軸２２を挿入
し、一方の車体フレーム２Ｌ側でピボット軸２２にワッ
シャ５１を嵌め、ナット５２をねじ結合したことを示
す。ここで、３１ａ，３１ａは貫通孔４１と大径孔４
２，４２とを繋ぐ段部である。Further, FIG. 3 shows the body frames 2L, 2R so that the outer surfaces of the side collars 47, 47 face the inside of the body frames 2L, 2R (the left and right body frames 2, 2 are referred to as 2L, 2R for convenience). The front mounting portion 31 of the rear fork 12 is interposed between the 2Rs, and the pivot shaft 22, which is a bolt, is inserted into the pivot shaft mounting hole 2a, the collar 46, and the pivot shaft mounting hole 2a opened in the body frames 2L, 2R in order. This shows that the washer 51 was fitted to the pivot shaft 22 on one vehicle body frame 2L side, and the nut 52 was screw-connected. Here, 31a and 31a are the through hole 41 and the large diameter hole 4 respectively.
It is a step connecting the second and the second.
【００１２】以上に述べたリヤフォークの取付構造の作
用を次に説明する。図４は本発明に係るリヤフォークの
取付構造の作用説明図である。例えば、リヤフォーク１
２に外力が作用する、即ち、図２において、コーナリン
グ中に後輪１３に路面から図に示す矢印方向の外力が作
用し、この外力がリヤフォーク１２に伝わると、図４に
おいて、リヤフォーク１２が車体フレーム２Ｌ側に移動
し、Ｏリング４４は前部取付部３１の段部３１ａとスラ
ストベアリング４５の側面とに挟まれて次第に潰れ、Ｏ
リング４４で発生する弾性力が次第に大きくなる。やが
て、車体フレーム２Ｌに対するリヤフォーク１２の移動
は止まり、Ｏリング４４は潰れなくなる。この時の車体
フレーム２Ｌに対するリヤフォーク１２の移動量をδ１
とする。The operation of the above-described rear fork mounting structure will now be described. FIG. 4 is an operation explanatory view of the mounting structure of the rear fork according to the present invention. For example, rear fork 1
2, that is, an external force acts on the rear wheel 13 from the road surface in the direction of the arrow shown in FIG. 2 during cornering and the external force is transmitted to the rear fork 12 in FIG. Moves toward the body frame 2L, and the O-ring 44 is gradually crushed by being sandwiched between the step portion 31a of the front mounting portion 31 and the side surface of the thrust bearing 45.
The elastic force generated by the ring 44 gradually increases. Eventually, the movement of the rear fork 12 with respect to the body frame 2L stops, and the O-ring 44 does not collapse. At this time, the moving amount of the rear fork 12 with respect to the body frame 2L is δ1
And
【００１３】図５は本発明に係るリヤフォークの車幅方
向の移動量とリヤフォークから車体フレームに伝わる外
力との関係を示すグラフであり、縦軸はリヤフォーク
（後輪でもよい。）から車体フレームに伝わる外力Ｆ、
横軸はリヤフォーク（後輪でもよい。）の車幅方向の移
動量Ｍを表し、実線は本実施例を、破線は比較例を示
す。（なお、符号は図４参照。） 車体フレームに対してリヤフォークが車幅方向に移動で
きない構造とした比較例では、リヤフォークに外力が作
用した場合に、リヤフォークの移動とともに直ちにリヤ
フォークから車体フレームに外力が伝わり、しかも移動
量Ｍに対して外力Ｆは急激に増加する。FIG. 5 is a graph showing the relationship between the amount of movement of the rear fork according to the present invention in the vehicle width direction and the external force transmitted from the rear fork to the vehicle body frame. The vertical axis is from the rear fork (or the rear wheel). External force F transmitted to the body frame,
The horizontal axis indicates the amount of movement M of the rear fork (or the rear wheel) in the vehicle width direction, the solid line indicates this embodiment, and the broken line indicates a comparative example. In the comparative example in which the rear fork cannot move in the vehicle width direction with respect to the body frame, when an external force acts on the rear fork, the rear fork is immediately moved from the rear fork. The external force is transmitted to the body frame, and the external force F rapidly increases with respect to the moving amount M.
【００１４】これに対して、本実施例では、リヤフォー
ク１２の移動量Ｍがδ１になるまでは、車体フレーム２
Ｌに伝わる外力Ｆは徐々に増加し、移動量Ｍがδ１にな
ると、外力Ｆは急激に増加する。本実施例の線上におけ
る移動量δ１の点をＡとすると、この点Ａは、比較例の
移動の始めの点Ｂに相当する。即ち、点Ａ，Ｂ共、リヤ
フォークと車体フレームとが一体になって移動を開始す
る。On the other hand, in the present embodiment, until the movement amount M of the rear fork 12 becomes δ1, the body frame 2
The external force F transmitted to L gradually increases, and when the movement amount M becomes δ1, the external force F rapidly increases. Assuming that the point of the movement amount δ1 on the line of the present embodiment is A, this point A corresponds to the start point B of the movement of the comparative example. That is, at both points A and B, the rear fork and the body frame start moving integrally.
【００１５】この事より、本実施例のリヤフォーク取付
構造は、リヤフォーク１２から車体フレーム２Ｌに大き
な外力Ｆに対する横移動量を、任意に設定することがで
きる。従って、例えば、コーナリング時等におけるリヤ
フォーク１２（後輪でもよい。）へ車幅方向の外力が作
用する場合のリヤフォーク１２（又は後輪）の変位量を
任意に設定することで、二輪車の設計自由度を増すこと
ができる。As a result, the rear fork mounting structure of this embodiment can arbitrarily set the amount of lateral movement from the rear fork 12 to the vehicle body frame 2L with respect to a large external force F. Therefore, for example, when the external force in the vehicle width direction acts on the rear fork 12 (or the rear wheel) at the time of cornering or the like, the displacement of the rear fork 12 (or the rear wheel) is arbitrarily set, so that the The degree of freedom in design can be increased.
【００１６】図６（ａ），（ｂ）は本発明に係る二輪車
のリヤフォーク取付構造の変形例を示す要部断面図であ
り、図３に示した実施例と同一構成については同一符号
を付け、説明を省略する。（ａ）は、リヤフォーク１２
の前部取付部６１に貫通孔４１を開け、この貫通孔４１
の両端に大径孔４２，４２（片側は不図示）を形成し、
この大径孔４２，４２と貫通孔４１とを繋ぐ段部３１ａ
を設け、この段部３１ａにリヤフォーク１２が車幅方向
に移動するときのストッパとなる凸部６２を形成したこ
とを示す。FIGS. 6 (a) and 6 (b) are cross-sectional views of a main part showing a modification of the rear fork mounting structure for a motorcycle according to the present invention. The same reference numerals are used for the same components as those in the embodiment shown in FIG. And description is omitted. (A) shows the rear fork 12
A through hole 41 is formed in the front mounting portion 61 of the
Large diameter holes 42, 42 (one side not shown) are formed at both ends of
Steps 31a connecting the large diameter holes 42, 42 and the through holes 41
This indicates that a convex portion 62 serving as a stopper when the rear fork 12 moves in the vehicle width direction is formed on the step portion 31a.
【００１７】（ｂ）において、リヤフォーク１２が車体
フレーム２Ｌ側へ移動すると、Ｏリング４４が潰れ、や
がて、凸部６２がスラストベアリング４５の側面に当た
ってリヤフォーク１２の移動が止まる。Ｏリング４４は
これ以上潰れない。この時の移動量は、（ａ）に示した
凸部６２とスラストベアリング４５の側面との距離δ２
である。上記した距離δ２を変更することにより、図５
で説明したリヤフォーク１２から車体フレーム２Ｌに大
きな外力Ｆが伝わる時のリヤフォーク１２の車幅方向の
移動量（変位量）を変更することができる。In FIG. 2B, when the rear fork 12 moves toward the body frame 2L, the O-ring 44 is crushed, and the projection 62 hits the side surface of the thrust bearing 45, and the movement of the rear fork 12 stops. The O-ring 44 does not collapse any more. The movement amount at this time is the distance δ2 between the convex portion 62 and the side surface of the thrust bearing 45 shown in FIG.
It is. By changing the distance δ2 described above, FIG.
The amount of movement (displacement) of the rear fork 12 in the vehicle width direction when a large external force F is transmitted from the rear fork 12 to the body frame 2L described in the above can be changed.
【００１８】図７（ａ），（ｂ）は本発明に係る二輪車
のリヤフォーク取付構造の更なる変形例を示す要部断面
図であり、図３に示した実施例及び図６に示した変形例
と同一構成については同一符号を付け、説明を省略す
る。（ａ）は、大径部４２，４２（片側は不図示）内の
段部３１ａとスラストベアリング４５との間にリヤフォ
ーク１２が車幅方向に移動するときのストッパとなるワ
ッシャ６３を配置したことを示す。ワッシャ６３は、外
径ｄ２を貫通孔４１の内径ｄ１よりも大きくしたもので
ある。FIGS. 7 (a) and 7 (b) are cross-sectional views of a main part showing a further modified example of the rear fork mounting structure for a motorcycle according to the present invention, which is shown in the embodiment shown in FIG. 3 and FIG. The same components as those of the modified example are denoted by the same reference numerals, and description thereof will be omitted. 3A, a washer 63 serving as a stopper when the rear fork 12 moves in the vehicle width direction is disposed between the stepped portion 31a in the large diameter portions 42, 42 (one side is not shown) and the thrust bearing 45. Indicates that The washer 63 has an outer diameter d2 larger than an inner diameter d1 of the through hole 41.
【００１９】（ｂ）において、リヤフォーク１２が車体
フレーム２Ｌ側へ移動すると、Ｏリング４４が潰れ、や
がて、ワッシャ６３が段部３１ａとスラストベアリング
４５の側面とに挟まれてリヤフォーク１２の移動が止ま
る。Ｏリング４４はこれ以上潰れない。この時の移動量
は、（ａ）に示したワッシャ６３の側面とスラストベア
リングの側面との距離δ３である。上記した距離δ３を
変更することにより、図５に示したリヤフォーク１２か
ら車体フレーム２Ｌに大きな外力Ｆが伝わる時のリヤフ
ォーク１２の車幅方向の移動量（変位量）を変更するこ
とができる。In (b), when the rear fork 12 moves toward the body frame 2L, the O-ring 44 is crushed, and the washer 63 is sandwiched between the stepped portion 31a and the side surface of the thrust bearing 45. Stops. The O-ring 44 does not collapse any more. The movement amount at this time is the distance δ3 between the side surface of the washer 63 and the side surface of the thrust bearing shown in FIG. By changing the distance δ3, the amount of movement (displacement) of the rear fork 12 in the vehicle width direction when a large external force F is transmitted from the rear fork 12 to the body frame 2L shown in FIG. 5 can be changed. .
【００２０】尚、本発明の弾性体は、Ｏリングに限るも
のではなく、三角、四角、楕円、半円等の各断面形状の
ラバー又は軟質樹脂製リング、コイルスプリング、皿ば
ねでも差し支えない。また、上記弾性体のばね定数は、
適宜設定してよい。これにより、二輪車の設計自由度を
更に増すことができる。The elastic body of the present invention is not limited to an O-ring, but may be a rubber or a soft resin ring, a coil spring, or a disc spring having a cross-sectional shape such as a triangle, a square, an ellipse, and a semicircle. The spring constant of the elastic body is
It may be set appropriately. Thereby, the degree of freedom in designing the motorcycle can be further increased.
【００２１】[0021]
【発明の効果】本発明は上記構成により次の効果を発揮
する。請求項１の二輪車のリヤフォーク取付構造は、後
輪を支えるリヤフォークを、上下方向にスイング可能に
且つ、車幅方向に一定距離だけ移動可能に車体フレーム
に取付け、この車体フレームとリヤフォークとの間に弾
性体を介在させたので、簡単な構造で且つコンパクトに
後輪を移動させることができ、また、弾性体で、路面か
ら後輪、リヤフォークを介して車体フレームに外力が伝
わるのを緩衝することができるとともに、例えば、コー
ナリング時等におけるリヤフォーク及び後輪へ車幅方向
の外力が作用する場合のリヤフォークの変位量を任意に
設定することで、二輪車の設計自由度を増すことができ
る。According to the present invention, the following effects are exhibited by the above configuration. The rear fork mounting structure for a motorcycle according to claim 1, wherein the rear fork for supporting the rear wheel is mounted on the body frame so as to be able to swing up and down and to move a fixed distance in the vehicle width direction. The rear wheel can be moved with a simple structure and compactly because an elastic body is interposed between them. Also, with the elastic body, external force is transmitted from the road surface to the body frame via the rear wheel and rear fork. And, for example, the amount of displacement of the rear fork when an external force in the vehicle width direction acts on the rear fork and the rear wheel at the time of cornering or the like is increased, thereby increasing the degree of freedom in designing the motorcycle. be able to.
【図１】本発明に係る二輪車のリヤフォーク取付構造を
採用した自動二輪車の側面図FIG. 1 is a side view of a motorcycle employing a motorcycle rear fork mounting structure according to the present invention.
【図２】本発明に係るリヤフォークの平面図FIG. 2 is a plan view of a rear fork according to the present invention.
【図３】本発明に係るリヤフォークの取付部を示す断面
図FIG. 3 is a sectional view showing a mounting portion of a rear fork according to the present invention.
【図４】本発明に係るリヤフォークの取付構造の作用説
明図FIG. 4 is a diagram illustrating the operation of the rear fork mounting structure according to the present invention.
【図５】本発明に係るリヤフォークの車幅方向の移動量
とリヤフォークから車体フレームに伝わる外力との関係
を示すグラフFIG. 5 is a graph showing the relationship between the amount of movement of the rear fork according to the present invention in the vehicle width direction and the external force transmitted from the rear fork to the vehicle body frame.
【図６】本発明に係る二輪車のリヤフォーク取付構造の
変形例を示す要部断面図FIG. 6 is a sectional view of a main part showing a modification of the rear fork mounting structure for a motorcycle according to the present invention.
【図７】本発明に係る二輪車のリヤフォーク取付構造の
更なる変形例を示す要部断面図FIG. 7 is a sectional view of a main part showing a further modified example of the rear fork mounting structure for a motorcycle according to the present invention.
１…二輪車（自動二輪車）、２，２Ｌ，２Ｒ…車体フレ
ーム、１２…リヤフォーク、１３…後輪、４４…弾性体
（Ｏリング）。DESCRIPTION OF SYMBOLS 1 ... Motorcycle (motorcycle), 2, 2L, 2R ... Body frame, 12 ... Rear fork, 13 ... Rear wheel, 44 ... Elastic body (O-ring).
Claims (1)
にスイング可能に且つ、車幅方向に一定距離だけ移動可
能に車体フレームに取付け、この車体フレームとリヤフ
ォークとの間に弾性体を介在させたことを特徴とする二
輪車のリヤフォーク取付構造。1. A rear fork for supporting a rear wheel is attached to a body frame so as to be able to swing up and down and to be movable by a certain distance in a vehicle width direction, and an elastic body is interposed between the body frame and the rear fork. Rear fork mounting structure for motorcycles, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27236298A JP3898356B2 (en) | 1998-09-25 | 1998-09-25 | Rear fork mounting structure for motorcycles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27236298A JP3898356B2 (en) | 1998-09-25 | 1998-09-25 | Rear fork mounting structure for motorcycles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000095172A true JP2000095172A (en) | 2000-04-04 |
| JP3898356B2 JP3898356B2 (en) | 2007-03-28 |
Family
ID=17512835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27236298A Expired - Fee Related JP3898356B2 (en) | 1998-09-25 | 1998-09-25 | Rear fork mounting structure for motorcycles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3898356B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008026705A1 (en) * | 2008-06-04 | 2009-12-10 | Bayerische Motoren Werke Aktiengesellschaft | Motorcycle, has rear wheel bearing comprising rear wheel rocker at which rear wheel is rotatably supported, where partial element or partial section and/or partial area of rear wheel bearing functions as damping device |
| CN106828751A (en) * | 2017-01-13 | 2017-06-13 | 力帆实业(集团)股份有限公司 | A kind of rear fork of motorcycle assembling structure |
| CN113386886A (en) * | 2020-03-13 | 2021-09-14 | 本田技研工业株式会社 | Saddle-ride type electric vehicle |
-
1998
- 1998-09-25 JP JP27236298A patent/JP3898356B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008026705A1 (en) * | 2008-06-04 | 2009-12-10 | Bayerische Motoren Werke Aktiengesellschaft | Motorcycle, has rear wheel bearing comprising rear wheel rocker at which rear wheel is rotatably supported, where partial element or partial section and/or partial area of rear wheel bearing functions as damping device |
| DE102008026705B4 (en) | 2008-06-04 | 2023-01-12 | Bayerische Motoren Werke Aktiengesellschaft | Motorcycle with a rear wheel bearing and a damping device for damping pendulum oscillations |
| CN106828751A (en) * | 2017-01-13 | 2017-06-13 | 力帆实业(集团)股份有限公司 | A kind of rear fork of motorcycle assembling structure |
| CN106828751B (en) * | 2017-01-13 | 2022-06-17 | 力帆实业(集团)股份有限公司 | Motorcycle rear fork assembly structure |
| CN113386886A (en) * | 2020-03-13 | 2021-09-14 | 本田技研工业株式会社 | Saddle-ride type electric vehicle |
| JP2021142938A (en) * | 2020-03-13 | 2021-09-24 | 本田技研工業株式会社 | Saddle-riding type electric vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3898356B2 (en) | 2007-03-28 |
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