JP3734536B2 - Motorcycle rear wheel desorption structure - Google Patents

Motorcycle rear wheel desorption structure Download PDF

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Publication number
JP3734536B2
JP3734536B2 JP23279895A JP23279895A JP3734536B2 JP 3734536 B2 JP3734536 B2 JP 3734536B2 JP 23279895 A JP23279895 A JP 23279895A JP 23279895 A JP23279895 A JP 23279895A JP 3734536 B2 JP3734536 B2 JP 3734536B2
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Japan
Prior art keywords
wheel
rear wheel
muffler
motorcycle
cylindrical
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JP23279895A
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Japanese (ja)
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JPH0976977A (en
Inventor
高次 佐藤
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は自動二輪車の後輪脱着構造に関する。
【0002】
【従来の技術】
自動二輪車には、例えば小排気量でスクータ型のものがあり、このスクータ型自動二輪車は、後輪の側方にマフラを配設するので、ある型式ではパンクの修理等で後輪を取り外す場合にマフラを外してから後輪を外す必要があった。この不具合を解消するために、実開昭63−17819号公報「自動二輪車のマフラ装置」で、マフラを外さないで後輪を脱着する自動二輪車の後輪脱着構造を提案している。
【0003】
図5は上記公報の第3図を再掲したところの(但し、符号は付け直した。)従来の自動二輪車の後輪脱着構造の作動図である。この自動二輪車の後輪脱着構造は、箱型のマフラ100をパワーユニット101の側方に配設し、この箱型のマフラ100のリヤアクスル102に対向する位置に凹部103を形成したものである。
【0004】
一方、後輪104は、ホイールリム105とホイールハブ106とを一体構造としているので、後輪104を外す場合、先ず、箱型のマフラ100の凹部103の空間を利用して、締付ナット107を取外し用工具でリヤアクスル102から取り外す。次に、リヤアクスル102の先端部からホイールハブ106を抜き出し、次いで、マフラ100の凹部103内にタイヤ108を逃がしながら後輪104をマフラ100とリヤアクスル102との間から引き出す。
【0005】
これにより、箱型のマフラ100を取り外さなくても後輪104をリヤアクスル102から取り外すことができる。なお、後輪104をリヤアクスル102に取付ける場合は、上記工程を逆の順序で行なうことにより、取外し時と同様に、箱型のマフラ100を取り外さなくても後輪104をリヤアクスル102に取り付けることができる。
【0006】
【発明が解決しようとする課題】
しかし、箱型のマフラ100はリヤアクスル102の軸線上に位置するので、マフラ100に凹部103を形成しても、締付ナット107の着脱作業が困難になる。また、マフラ100に凹部103を形成すると、マフラ100の容量が小さくなるので容量の確保が困難になり、さらに、マフラの形状が複雑になるのでマフラの生産性が低下する。
【0007】
そこで、本発明の目的は、後輪の着脱作業が容易で、またマフラの容量を確保でき、さらにマフラの生産性が向上する自動二輪車の後輪脱着構造の技術を提供することにある。
【0008】
【課題を解決するための手段】
上記課題を解決するために本発明の請求項1は、リアアクスルにホイールハブを取付け、このホイールハブに側方からホイールリムを着脱自在に取付けてなる自動二輪車の後輪脱着構造において、前記後輪を片持ち支持し、前記後輪の側方に円筒形マフラを後輪の前後方向に対して平面視で傾斜した状態に配置し、前記後輪と対向する円筒形マフラの内側面に直交する垂線と、後輪のリアアクスル先端とを結ぶ線の長さ(リアアクスルと円筒形マフラとの間隔)Lを、タイヤの幅Lと略々同一としたことを特徴とする。
【0009】
イールハブとホイールリムとを分割し、後輪の側方に円筒形マフラを後輪の前後方向に対して平面視で傾斜した状態に配置し、前記円筒形マフラと前記ホイールハブとの間のスペースで、前記後輪のタイヤ及びホイールリムを前記円筒形マフラに沿って傾斜させた状態で後輪を脱着させたので、まず、ホイールハブにホイールリムを取付けるボルト位置がリアアクスルから輪径外側にずれた位置になるので、このボルト位置をマフラから簡単にずらすことができる。
そして、ホイールハブとホイールリムとを分割したことにより、後輪を取り外す際に、後輪の引出し量を小さくすることができ、後輪のタイヤ及びホイールリムを前記円筒形マフラに沿って傾斜させた状態で後輪を脱着させるので、後輪とマフラとの干渉を避けるために逃げ用の凹部をマフラに形成する必要がない。
また、円筒形マフラを使用することにより、マフラの容量を確保することができる。
【0010】
【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は本発明に係る自動二輪車の後輪脱着構造を備えたスクータ型自動二輪車の側面図であり、スクータ型自動二輪車1は車体フレーム2と、この車体フレーム2を覆うボディカバー10と、前輪20と、パワーユニット30と、自動二輪車の後輪脱着構造40等からなり、自動二輪車の後輪脱着構造40は図3で詳細に説明する。
なお、25はシート、26はスペアタイヤであり、スペアタイヤ26は、車体フレーム2の後部にリヤキャリア27とサポート28にて取付けられる。
【0011】
車体フレーム2はヘッドパイプ3と、このヘッドパイプ3に操向可能に支持したフロントフォーク4と、このフロントフォーク4に連結したハンドル5と、ヘッドパイプ3から後下方に延出したダウンチューブ6と、このダウンチューブ6の下端から後方に連設したリヤフレーム7とからなる。フロントフォーク4の下端部には前輪20が懸架される。
【0012】
リヤフレーム7は平面視略楕円状を呈し、ダウンチューブ6の下端から後方に略水平に延びる左右一対の前部フレーム部7a(この図では一方のみを示す)と、これらの前部フレーム部7aの後部から後上方に延びる左右一対の中間フレーム部7bと、これらの中間フレーム部7bの後端を相互に連結する後部フレーム部7cとからなる。
【0013】
ボディカバー10は、ヘッドパイプ3の前部及び前輪20の上部を覆うフロントカバー11並びにフロントサイドカバー12と、ハンドル5周りを覆うハンドルカバー13と、運転車の脚部前方を覆うレッグシールド14と、運転者の足元を支持するフロアパネル15と、中間フレーム部7bの前部を覆うセンターカバー16と、車体フレーム2の後部両側面を覆うサイドカバー17並びにアンダーカバー18と、車体フレーム2の後部上部を覆うリヤアッパカバー19とからなる。サイドカバー17の後部には、後輪タイヤ47の上部を覆うリヤフェンダ31が配置される。
【0014】
前輪20は、フロントアクスル21に設けたホイールハブ22と、ホイールハブ22にボルト23で固定したホイールリム24と、ホイールリム24の外周に設けたタイヤ25とからなる。即ち、ホイールハブ22を略三角形に形成し、それぞれの3ヵ所の頂部にボルト23でホイールリム24を固定することにより、前輪20をフロントフォーク4の下端部にフロントアクスル21を介して回動自在に支持する。
【0015】
図2は本発明に係る自動二輪車の後輪脱着構造をパワーユニットに組付けた斜視図であり、パワーユニット30は2サイクル強制空冷型エンジン31と、このエンジン31の出力を後輪41に伝達する無段変速機(伝動ケース32のみ図示)とからなる。パワーユニット30の右側に、自動二輪車の後輪脱着構造40の後輪41及び円筒形マフラ51を配設する。なお、33は気化器である。
【0016】
図3は図1の3−3線断面図(但し、図左が前方)であり、本発明に係る自動二輪車の後輪脱着構造を示す。自動二輪車の後輪脱着構造40は、後輪41と、円筒形マフラ51とかなる。この後輪41は、図1に示す前輪20と略同様に構成し、略三角形のホイールハブ44(形状は図1を参照)と、ホイールハブ44に脱着自在に設けたホイールリム46と、ホイールリム46の外周に設けたタイヤ47とからなる。円筒形マフラ51は、図3で明らかなように、後輪41の前後方向に対して平面視で傾斜した状態に配置されている。即ち、円筒形マフラ51の前部のコーン部51aに対し、後部が車幅方向外方に離れて位置するように傾斜して配置されている。
そして、略三角形のホイールハブ44を締付ナット43でリアクスル42に固定し、略三角形のホイールハブ44の3ヵ所の頂部(1箇所のみ図示)にボルト45a及びナット45bでホイールリム46を脱着自在に設ける。
ところで、後輪の支持形式であるが、図3で明らかな通り、後輪41は、パワーユニット30の伝導ケース32の一側に配置され、リアアクスル42に支持された片持ち支持形式である。
【0017】
また、ホイールハブ44はブレーキドラムを兼ねており、ブレーキドラム内にはカム49で操作可能なブレーキシュー48を設けている。50はブレーキアームであり、ブレーキアーム50はカム49を操作する。
【0018】
円筒形マフラ51を伝動ケース32と反対側に後輪41に対して僅かに傾斜した状態に配置し、円筒形マフラ51のコーン部51aを、エンジン31の前面から伝動ケース32と反対側の後方に延出させた排気管52に連通する。これにより、後輪41が伝動ケース32と円筒形マフラ51との間に位置する。
【0019】
以上に述べた本発明に係る自動二輪車の後輪脱着構造の作用を次に説明する。先ず、図3に示すナット45bを工具を使用して緩めてボルト45aから取り外す。この場合、図1に示すように、ナット45bをリヤアクスル42から離れた位置に取り付けたのでマフラ51からずらすことができる。従って、ナット45bの締め付けを緩める工具をナット45bに容易に係合することができるので、ナット45bの取外し作業が容易になる。次に、ボルト45aを抜き取って、ホイールハブ44からホイールリム46を分離する。
【0020】
図4は本発明に係る自動二輪車の後輪脱着構造の作用図であり、実線で示す通りタイヤ47及びホイールリム46を、図4で明らかな通り円筒形マフラ51と平面視でほぼ同一の傾斜角度となるように円筒形マフラ51に沿って傾斜させ、この状態で後輪41及びホイールリム46を矢印方向に引き出して車両本体から取り外す。このように、ホイールハブ44とホイールリム46とを分割構造にすることにより、タイヤ47及びホイールリム46を円筒形マフラ51の方へ大きく移動しなくても、タイヤ47及びホイールリム46をホイールハブ44から分離することができる。従って、リアクスル42の先端部と、円筒形マフラ51の後輪と対向する内側面に直交する垂線とを結ぶ線の長さL、即ち、この間の間隔L(L=略タイヤ幅)を従来より小さくして、車両本体からの円筒形マフラ51の突出量を小さくすることができる。これにより、マフラに逃げ用の凹部を形成する必要がないので円筒形マフラを使用してもマフラの容量を確保することができる。
【0021】
一方、従来技術のように、ホイールハブ44とホイールリム46とを一体構造にすると、後輪41を取り外す場合、ホイールハブ44をリヤアクスル42から引き抜く必要がある。従って、後輪41を想像線に示した位置まで引き出す必要があるが、その前に円筒形マフラ51の前端部51aに、図中///Zで示す部分で後輪41が当接し、後輪41をリヤアクスル42から引き抜くことができない。これに比較して、本発明は小さなスペースでありながら後輪41を簡単に引き抜くことができる。
【0022】
【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は、リアアクスルにホイールハブを取付け、このホイールハブに側方からホイールリムを着脱自在に取付けてなる自動二輪車の後輪脱着構造において、前記後輪を片持ち支持し、前記後輪の側方に円筒形マフラを後輪の前後方向に対して平面視で傾斜した状態に配置し、前記円筒形マフラと前記ホイールハブとの間のスペースで、前記後輪のタイヤ及びホイールリムを前記円筒形マフラと平面視でほぼ同一の傾斜角度となるように沿って傾斜させた状態で後輪を脱着させるようにした。
従って、ホイールハブにホイールリムを取付けるボルト位置がリアアクスルから輪径外側にずれた位置になるので、このボルト位置をマフラからずらすことができる。これにより、ボルトの脱着作業を容易に行なうことができる。
【0023】
ホイールハブとホイールリムとを分割し、後輪を片持ち支持し、後輪の側方に円筒形マフラを後輪の前後方向に対して平面視で傾斜した状態に配置し、前記円筒形マフラと前記ホイールハブとの間のスペースで、前記後輪のタイヤ及びホイールリムを前記円筒形マフラと平面視でほぼ同一の傾斜角度に沿って傾斜させた状態で後輪を脱着させるようにしたことにより、後輪を取り外す際に、後輪の引出し量を小さくすることができるので、後輪との干渉を避けるために逃げ用の凹部をマフラに形成する必要がない。従って、円筒形マフラでもマフラの容量を確保することができ、また外観性の向上を図ることができる。
また、マフラを円筒形にできるので、マフラの形状を簡素化して生産性の向上を図り、コスト低減を図ることができる。
【0024】
また円筒形マフラとしたので、マフラの容量を確保することができ、またマフラの形状が簡素化するので生産性や外観性が向上し、さらにコスト低減を図ることができる。
【図面の簡単な説明】
【図1】本発明の自動二輪車の後輪脱着構造を備えたスクータ型自動二輪車の側面図
【図2】本発明に係る自動二輪車の後輪脱着構造をパワーユニットに組付けた斜視図
【図3】図1の3−3線断面図
【図4】本発明に係る自動二輪車の後輪脱着構造の作用図
【図5】従来の自動二輪車の後輪脱着構造の作動図
【符号の説明】
40…自動二輪車の後輪脱着構造、41…後輪、42…リアアクスル、44…ホイールハブ、46…ホイールリム、47…タイヤ、51…円筒形マフラ。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a motorcycle rear wheel detaching structure.
[0002]
[Prior art]
For example, some motorcycles have a small displacement and a scooter type, and this scooter type motorcycle has a muffler on the side of the rear wheel, so in some models the rear wheel is removed by puncture repair etc. It was necessary to remove the rear wheel after removing the muffler. In order to solve this problem, Japanese Patent Application Laid-Open No. 63-17819 “Motorcycle Muffler Device” proposes a rear wheel detaching structure for a motorcycle in which the rear wheel is detached without removing the muffler.
[0003]
FIG. 5 is an operation diagram of the conventional rear wheel detaching structure of the motorcycle, in which FIG. 3 of the above-mentioned publication is reprinted (however, the reference numerals have been changed). In the rear wheel detaching structure of the motorcycle, a box-shaped muffler 100 is disposed on the side of the power unit 101, and a recess 103 is formed at a position facing the rear axle 102 of the box-shaped muffler 100.
[0004]
On the other hand, since the rear wheel 104 has a wheel rim 105 and a wheel hub 106 integrally formed, when the rear wheel 104 is removed, first, a tightening nut 107 is used by utilizing the space of the concave portion 103 of the box-shaped muffler 100. Is removed from the rear axle 102 with a removal tool. Next, the wheel hub 106 is extracted from the front end portion of the rear axle 102, and then the rear wheel 104 is pulled out from between the muffler 100 and the rear axle 102 while letting the tire 108 escape into the recess 103 of the muffler 100.
[0005]
Thus, the rear wheel 104 can be detached from the rear axle 102 without removing the box-shaped muffler 100. When the rear wheel 104 is attached to the rear axle 102, the above steps are performed in the reverse order so that the rear wheel 104 can be attached to the rear axle 102 without removing the box-shaped muffler 100, as in the case of removal. it can.
[0006]
[Problems to be solved by the invention]
However, since the box-shaped muffler 100 is located on the axis of the rear axle 102, even if the recess 103 is formed in the muffler 100, it is difficult to attach and detach the tightening nut 107. Further, if the concave portion 103 is formed in the muffler 100, the capacity of the muffler 100 is reduced, so that it is difficult to secure the capacity, and the shape of the muffler is complicated, so that the productivity of the muffler is lowered.
[0007]
SUMMARY OF THE INVENTION An object of the present invention is to provide a technology for a motorcycle rear wheel attachment / detachment structure in which the rear wheel can be easily attached and detached, the capacity of the muffler can be secured, and the productivity of the muffler can be improved.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a first aspect of the present invention provides a rear wheel attaching / detaching structure for a motorcycle in which a wheel hub is attached to a rear axle, and a wheel rim is detachably attached to the wheel hub from the side. having supporting the wheel pieces, the cylindrical muffler on the side of the rear wheel is arranged in a state inclined in plan view with respect to the longitudinal direction of the rear wheel, perpendicular to the inner surface of the cylindrical muffler facing the rear wheel The length (line between the rear axle and the cylindrical muffler) L connecting the vertical line and the rear axle tip of the rear wheel is substantially the same as the tire width L.
[0009]
Dividing the e Iruhabu and the wheel rim, the rear wheel is arranged in a state inclined in plan view a cylindrical muffler with respect to the longitudinal direction of the rear wheel on the side, between the wheel hub and the cylindrical muffler In the space, the rear wheel was attached and detached with the rear wheel tire and wheel rim inclined along the cylindrical muffler. The position of the bolt can be easily shifted from the muffler.
Further, by dividing the wheel hub and the wheel rim, when the rear wheel is removed, the pull-out amount of the rear wheel can be reduced, and the tire and the wheel rim of the rear wheel are inclined along the cylindrical muffler. it is not necessary to form the muffler a recess for escape in order to avoid interference with Runode desorb the rear wheel, the rear wheel and the muffler in the state.
Moreover, the capacity | capacitance of a muffler is securable by using a cylindrical muffler.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a side view of a scooter type motorcycle 1 equipped with a motorcycle rear wheel detaching structure according to the present invention. The scooter type motorcycle 1 includes a body frame 2, a body cover 10 covering the body frame 2, a front wheel 20 and the like. And the rear unit demounting structure 40 of the motorcycle, and the rear wheel demounting structure 40 of the motorcycle will be described in detail with reference to FIG.
Reference numeral 25 denotes a seat, and 26 denotes a spare tire. The spare tire 26 is attached to the rear portion of the vehicle body frame 2 by a rear carrier 27 and a support 28.
[0011]
The vehicle body frame 2 includes a head pipe 3, a front fork 4 that is steerably supported by the head pipe 3, a handle 5 connected to the front fork 4, and a down tube 6 that extends rearward and downward from the head pipe 3. The rear frame 7 is provided with a rear frame 7 connected to the rear from the lower end of the down tube 6. A front wheel 20 is suspended from the lower end portion of the front fork 4.
[0012]
The rear frame 7 has a substantially elliptical shape in plan view, and a pair of left and right front frame portions 7a (only one is shown in this drawing) extending substantially horizontally rearward from the lower end of the down tube 6, and these front frame portions 7a. A pair of left and right intermediate frame portions 7b extending rearward and upward from the rear portion, and a rear frame portion 7c that connects the rear ends of these intermediate frame portions 7b to each other.
[0013]
The body cover 10 includes a front cover 11 and a front side cover 12 that cover the front portion of the head pipe 3 and the upper portion of the front wheel 20, a handle cover 13 that covers the periphery of the handle 5, a leg shield 14 that covers the front of the legs of the driver car, A floor panel 15 that supports the driver's feet, a center cover 16 that covers the front portion of the intermediate frame portion 7b, a side cover 17 and an under cover 18 that cover both sides of the rear portion of the vehicle body frame 2, and an upper rear portion of the vehicle body frame 2 And a rear upper cover 19 that covers A rear fender 31 that covers the upper portion of the rear wheel tire 47 is disposed at the rear portion of the side cover 17.
[0014]
The front wheel 20 includes a wheel hub 22 provided on the front axle 21, a wheel rim 24 fixed to the wheel hub 22 with bolts 23, and a tire 25 provided on the outer periphery of the wheel rim 24. That is, the wheel hub 22 is formed in a substantially triangular shape, and the wheel rim 24 is fixed to the top of each of the three locations with bolts 23 so that the front wheel 20 can be pivoted to the lower end portion of the front fork 4 via the front axle 21. To support.
[0015]
FIG. 2 is a perspective view in which the rear wheel attaching / detaching structure of the motorcycle according to the present invention is assembled to a power unit. The power unit 30 includes a two-cycle forced air-cooled engine 31 and an output of the engine 31 transmitted to the rear wheel 41. It consists of a step transmission (only the transmission case 32 is shown). A rear wheel 41 and a cylindrical muffler 51 are disposed on the right side of the power unit 30. Reference numeral 33 denotes a vaporizer.
[0016]
FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 1 (where the left side is the front), and shows the rear wheel detaching structure of the motorcycle according to the present invention. Wheel desorption structure after the motorcycle 40 includes a rear wheel 41, consisting et Toka cylindrical muffler 51. The rear wheel 41 is configured in substantially the same manner as the front wheel 20 shown in FIG. 1, and has a substantially triangular wheel hub 44 (see FIG. 1 for the shape), a wheel rim 46 that is detachably attached to the wheel hub 44, a wheel The tire 47 is provided on the outer periphery of the rim 46. As is apparent from FIG. 3, the cylindrical muffler 51 is disposed in a state inclined in plan view with respect to the front-rear direction of the rear wheel 41. That is, the rear portion of the cylindrical muffler 51 is inclined with respect to the front cone portion 51a so as to be located outward in the vehicle width direction.
Then, the wheel hub 44 of substantially triangular fixed to Li A axle 42 by tightening the nut 43, the wheel rim 46 on top of the three positions of the wheel hub 44 of substantially triangular (only one location) with a bolt 45a and a nut 45b Detachable.
By the way, although it is a support type of a rear wheel, as is apparent from FIG. 3, the rear wheel 41 is a cantilever support type that is disposed on one side of the conduction case 32 of the power unit 30 and supported by the rear axle 42.
[0017]
The wheel hub 44 also serves as a brake drum, and a brake shoe 48 that can be operated by a cam 49 is provided in the brake drum. Reference numeral 50 denotes a brake arm, and the brake arm 50 operates the cam 49.
[0018]
The cylindrical muffler 51 is disposed on the opposite side to the transmission case 32 so as to be slightly inclined with respect to the rear wheel 41, and the cone part 51 a of the cylindrical muffler 51 is disposed on the rear side opposite to the transmission case 32 from the front surface of the engine 31. The exhaust pipe 52 communicates with the exhaust pipe 52. As a result, the rear wheel 41 is positioned between the transmission case 32 and the cylindrical muffler 51.
[0019]
The operation of the motorcycle rear wheel detaching structure according to the present invention described above will now be described. First, the nut 45b shown in FIG. 3 is loosened using a tool and removed from the bolt 45a. In this case, as shown in FIG. 1, the nut 45 b is attached at a position away from the rear axle 42, so that it can be shifted from the muffler 51. Accordingly, since the tool for loosening the nut 45b can be easily engaged with the nut 45b, the nut 45b can be easily removed. Next, the bolt 45 a is removed to separate the wheel rim 46 from the wheel hub 44.
[0020]
FIG. 4 is an operational view of the rear wheel desorption structure of the motorcycle according to the present invention. As shown by the solid line, the tire 47 and the wheel rim 46 are inclined substantially the same in plan view as the cylindrical muffler 51 as apparent in FIG. The rear wheel 41 and the wheel rim 46 are pulled out in the direction of the arrow and removed from the vehicle body in this state. As described above, by dividing the wheel hub 44 and the wheel rim 46, the tire 47 and the wheel rim 46 can be connected to the wheel hub without moving the tire 47 and the wheel rim 46 toward the cylindrical muffler 51 greatly. 44 can be separated. Accordingly, the tip portion of the re-A axle 42, the length of the line connecting the vertical line orthogonal to the inner surface of wheel facing after cylindrical muffler 51 L, i.e., during this time interval L to (L = approximately tire width) The projection amount of the cylindrical muffler 51 from the vehicle main body can be reduced by making it smaller than before. Thereby, since it is not necessary to form a recess for escape in the muffler, the capacity of the muffler can be secured even if a cylindrical muffler is used.
[0021]
On the other hand, when the wheel hub 44 and the wheel rim 46 are integrated as in the prior art, the wheel hub 44 needs to be pulled out of the rear axle 42 when the rear wheel 41 is removed. Therefore, it is necessary to pull out the rear wheel 41 to the position indicated by the imaginary line, but before that, the rear wheel 41 comes into contact with the front end portion 51a of the cylindrical muffler 51 at the portion indicated by // Z in the drawing, The wheel 41 cannot be pulled out from the rear axle 42. Compared to this, the present invention allows the rear wheel 41 to be easily pulled out while being a small space.
[0022]
【The invention's effect】
The present invention exhibits the following effects by the above configuration.
Claim 1, attached to the wheel hub on the rear axle, the wheels desorption structure after the motorcycle comprising attached from the side of the wheel rim detachably to the wheel hub, the rear wheel cantilevered by the rear wheel A cylindrical muffler is disposed on the side of the rear wheel so as to be inclined in a plan view with respect to the front-rear direction of the rear wheel, and in the space between the cylindrical muffler and the wheel hub, the tire and wheel rim of the rear wheel are arranged. and to desorb the rear wheel in a state of being inclined along to be substantially the same inclination angle with the cylindrical muffler in a plan view.
Accordingly, the bolt position for attaching the wheel rim to the wheel hub is shifted from the rear axle to the outside of the wheel diameter, so that the bolt position can be shifted from the muffler. Thereby, the removal | desorption operation | work of a volt | bolt can be performed easily.
[0023]
The wheel hub and the wheel rim are divided, the rear wheel is cantilevered , and the cylindrical muffler is disposed on the side of the rear wheel so as to be inclined in plan view with respect to the front-rear direction of the rear wheel. In the space between the wheel hub and the wheel hub, the rear wheel is detached and attached in a state where the tire and wheel rim of the rear wheel are inclined along substantially the same inclination angle in plan view as the cylindrical muffler. As a result, when the rear wheel is removed, the pull-out amount of the rear wheel can be reduced, so that it is not necessary to form a recess for escape in the muffler in order to avoid interference with the rear wheel. Therefore, the capacity of the muffler can be secured even with the cylindrical muffler, and the appearance can be improved.
In addition, since the muffler can be formed into a cylindrical shape, the shape of the muffler can be simplified, the productivity can be improved, and the cost can be reduced.
[0024]
Since the cylindrical muffler is used, the capacity of the muffler can be secured , and the shape of the muffler can be simplified, so that productivity and appearance can be improved, and further cost reduction can be achieved.
[Brief description of the drawings]
FIG. 1 is a side view of a scooter type motorcycle equipped with a rear wheel attachment / detachment structure of a motorcycle according to the present invention. FIG. 2 is a perspective view of a motorcycle rear wheel attachment / detachment structure according to the present invention assembled with a power unit. Fig. 4 is a cross-sectional view taken along line 3-3 in Fig. 1. Fig. 4 is an operational view of a motorcycle rear wheel detaching structure according to the present invention. Fig. 5 is an operation diagram of a conventional motorcycle rear wheel detaching structure.
DESCRIPTION OF SYMBOLS 40 ... Motorcycle rear-wheel attachment / detachment structure, 41 ... Rear wheel, 42 ... Rear axle, 44 ... Wheel hub, 46 ... Wheel rim, 47 ... Tire, 51 ... Cylindrical muffler.

Claims (1)

リアアクスルにホイールハブを取付け、このホイールハブに側方からホイールリムを着脱自在に取付けてなる自動二輪車の後輪脱着構造において、
前記後輪を片持ち支持し、
前記後輪の側方に円筒形マフラを後輪の前後方向に対して平面視で傾斜した状態に配置し、
前記後輪と対向する円筒形マフラの内側面に直交する垂線と、後輪のリアアクスル先端とを結ぶ線の長さ(リアアクスルと円筒形マフラとの間隔)Lを、タイヤの幅Lと略々同一とした、
ことを特徴とする自動二輪車の後輪脱着構造。
In the rear wheel detaching structure of a motorcycle in which a wheel hub is attached to the rear axle and a wheel rim is detachably attached to the wheel hub from the side,
Cantilevered the rear wheel,
A cylindrical muffler is disposed on the side of the rear wheel in a state inclined in plan view with respect to the front-rear direction of the rear wheel,
The length L (interval between the rear axle and the cylindrical muffler) L connecting the perpendicular line perpendicular to the inner surface of the cylindrical muffler facing the rear wheel and the rear axle tip of the rear wheel, and the tire width L Almost identical,
Motorcycle rear wheel detachable structure characterized by that.
JP23279895A 1995-09-11 1995-09-11 Motorcycle rear wheel desorption structure Expired - Fee Related JP3734536B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23279895A JP3734536B2 (en) 1995-09-11 1995-09-11 Motorcycle rear wheel desorption structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23279895A JP3734536B2 (en) 1995-09-11 1995-09-11 Motorcycle rear wheel desorption structure

Publications (2)

Publication Number Publication Date
JPH0976977A JPH0976977A (en) 1997-03-25
JP3734536B2 true JP3734536B2 (en) 2006-01-11

Family

ID=16944931

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23279895A Expired - Fee Related JP3734536B2 (en) 1995-09-11 1995-09-11 Motorcycle rear wheel desorption structure

Country Status (1)

Country Link
JP (1) JP3734536B2 (en)

Also Published As

Publication number Publication date
JPH0976977A (en) 1997-03-25

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