JP3933830B2

JP3933830B2 - Power transmission device and assembly method thereof

Info

Publication number: JP3933830B2
Application number: JP36116999A
Authority: JP
Inventors: 誠治鹿貫; 知洋植松
Original assignee: Yamada Manufacturing Co Ltd
Current assignee: Apic Yamada Corp
Priority date: 1999-12-20
Filing date: 1999-12-20
Publication date: 2007-06-20
Anticipated expiration: 2019-12-20
Also published as: JP2001171368A

Description

【０００１】
【発明の属する技術分野】
本発明は、自動二輪車などにおいて、エンジンからタイヤの間に、無段変速プーリ装置及び減速ギア装置を設けて、エンジンの駆動力を適宜可変速してタイヤに伝達する装置を簡易，迅速且つ効率的に装着することができる動力伝達装置及びその組付方法に関する。
【０００２】
【従来の技術】
従来より、自動二輪車などにおいて、エンジンからタイヤの間に、無段変速プーリ装置及び減速ギア装置を設けて、エンジンの駆動力を適宜可変速してタイヤに伝達しているものがある。そして、エンジン，無段変速プーリ装置，減速ギア装置と、それぞれの装置が構成単位（モジュール）化されている。
【０００３】
【発明が解決しようとする課題】
しかしながら、図１６に示すように、エンジン側のクランクシャフト〔出力軸（イ）〕，無段変速プーリ装置〔原動プーリ（ロ），従動プーリ（ハ），ベルト（ニ）〕，減速ギア装置（ホ）及びそのハウジング本体（ヘ），ハウジングカバー（ト）等の構成部材が、たとえそれぞれの装置としてモジュール化されていたとしても、その装置のモジュール化のままで二輪車本体に組付けることが困難の為、一方の装置に設けられた連結構成部品に他方の装置の構成部品を組付けなければならないので、組付性を向上させることが難しく、生産性の向上や製造コストを低減させることができなかった。
【０００４】
具体的には、エンジンのクランクシャフトと連結する無段変速プーリ装置の場合、そのクランクシャフトに対して変速プーリ装置の構成部品を組付けた後、無段変速プーリ装置のモジュール化を構成するカバーを取付けなければならない。すなわち、モジュール化されている無段変速プーリ装置は、エンジンとの組付けにおいて、そのモジュール化されているままで組付けられず、その構成部品がエンジンのクランクシャフトに組み付けられて、無段変速プーリ装置というモジュールが組立完了するというものであった。
【０００５】
【課題を解決するための手段】
そこで、発明者は、上記課題を解決すべく、鋭意，研究を重ねた結果、本発明を、軸方向に沿って中空部を有し、クランクシャフトの軸端に軸方向に沿って接続される伝達軸と、固定プーリ半体と，外周に円筒状外周部を形成した可動プーリ半体と，該可動プーリ半体を前記固定プーリ半体側に近接させるランププレート及びウエイトローラとから構成され，前記伝達軸にて軸支される動力側変速プーリと、該動力側変速プーリとベルトを介して動力伝達される従動側変速プーリと、内面側に前記可動プーリ半体の円筒状外周部を遊挿可能で，且つその円筒状外周部を包囲状に支持する包囲壁面部と，該包囲壁面部の略中心箇所に位置し，外面側から内面側に、前記クランクシャフトと接続する伝達軸が貫通する貫通孔が構成された収納案内部を有する連結体と、前記中空部に挿通して前記クランクシャフトに伝達軸を固着し，且つ該伝達軸に固定プーリ半体を固着するための固着具と、前記連結体の内面側を被覆して連結体とで前記無段変速プーリ装置のハウジングを構成するカバー体とからなり、前記ハウジングにベルトにて巻き掛けられた動力側変速プーリと従動側変速プーリとが装着されてなる動力伝達装置及びその組付方法等としたことにより、エンジンとタイヤ間に設けられる無段変速プーリ装置及び減速ギア装置の動力伝達装置を構成単位（モジュール）化したままで、容易に組付け可能とする動力伝達装置を提供して、組付性を向上させ、生産性の向上及び製造コストの低減が実現できるようにする。
【０００６】
【発明の実施の形態】
以下、本発明の実施形態を図面に基づいて説明する。まず、本発明における装置の構成は、主に、連結体Ａ，動力側変速プーリＢ，カバー体Ｅ，従動側変速プーリＣ等とから構成される。その連結体Ａには、無段変速プーリ装置と減速ギア装置とが装着され、これらの部材が集合して構成されるモジュールとして、二輪車のエンジン装着箇所に設けられたクランクシャフト２２と，タイヤハブ２５との間に装着される。また、カバー体Ｅは、前記連結体Ａの開口部を覆う（被覆する）役目をなすものである。そして、連結体Ａとカバー体Ｅとでハウジングを構成するものである（図１参照）。
【０００７】
上記無段変速プーリ装置は、主に動力側変速プーリＢと，従動側変速プーリＣと，両変速プーリに巻き掛けられるベルト２０等から構成されている（図１，図３等参照）。また、減速ギア装置Ｆには、タイヤハブ２５に直結する車軸が装着されており、その減速ギア装置Ｆが従動側変速プーリＣと連結し、二輪車のタイヤに回転力を伝達する。
【０００８】
その連結体Ａと前記無段変速プーリ装置、或いはその連結体Ａにカバー体Ｅを装着し、或いは前記無段変速プーリ装置に後述する減速ギア装置Ｆとを加えてそれぞれ一つの構成単位とし、動力伝達装置が構成される。そして、上述したように、該動力伝達装置を二輪車側に装着するものとしたものである。
【０００９】
次に、動力側変速プーリＢは、伝達軸２３及び固着具２４を介してエンジン側のクランクシャフト２２に装着されるものである。その伝達軸２３は、中空状の軸であって、その軸方向に沿って中空貫通孔状の中空部２３ａが形成されているものである。また、外周側面部には段差部２３ｃが形成されている。その軸方向一端はテーパー部２３ｂが形成されている（図６参照）。
【００１０】
また、固着具２４は、ボルト状をなし、頭部２４ａと螺子軸部２４ｂとから構成され、該螺子軸部２４ｂは、前記伝達軸２３の中空部２３ａに挿入する構造となっている。前記頭部２４ａは、押え板片２４ａ₁が形成され、後述する固定プーリ半体６を押圧して、動力側変速プーリＢを前記伝達軸２３に固定することができる（図２等参照）。
【００１１】
そして、クランクシャフト２２側には、前記伝達軸２３のテーパー部２３ｂが挿入する凹み孔状の伝達軸受部２２ａが形成され、該伝達軸受部２２ａの底面には、固着具２４の螺子軸部２４ｂと螺合する内螺子孔部２２ｂが形成されている（図４参照）。そして、前記伝達軸２３のテーパー部２３ｂをクランクシャフト２２の伝達軸受部２２ａ内に挿入し、固着具２４の螺子軸部２４ｂを伝達軸２３の中空部２３ａに挿入し、螺子軸部２４ｂを内螺子孔部２２ｂに締め付けて伝達軸２３を固着する。
【００１２】
その連結体Ａは、ケース本体部１に前記動力側変速プーリＢを装着するための収納案内部２が形成されている（図２，図４等参照）。該収納案内部２は、包囲壁面部２ａ及び貫通孔２ｂから構成されている〔図５，図１５（Ａ）等参照〕。その包囲壁面部２ａは、略円周状内壁面に形成されており、動力側変速プーリＢにおける可動プーリ半体５の円筒状外周部５ｄが収納され、連結体Ａに所定位置に支持されるものである（図４参照）。
【００１３】
前記貫通孔２ｂを介して、クランクシャフト２２と伝達軸２３とが入接続し、該伝達軸２３により動力側変速プーリＢが軸支されるようになっている。その収納案内部２により動力側変速プーリＢの可動プーリ半体５が連結体Ａ内において所定の位置に支持されることができる（図２参照）。
【００１４】
その収納案内部２の具体的な形状は、前記可動プーリ半体５に形成された（後述する）円筒状外周部５ｄを包囲状に支持する包囲壁面部２ａが形成されている〔図５，図６，図１５（Ａ）参照〕。該包囲壁面部２ａは、連続形成された円周壁面としてもよいし、或いは円弧状の壁面が適宜の間隔をおいて断続的に集合形成されたものであっても構わない。また、連結体Ａの内面側１ａに形成された補強用のリブが包囲壁面部２ａを兼ねるようにして形成されることもある。
【００１５】
その連結体Ａは、ケース本体部１に前記動力側変速プーリＢを装着するための収納案内部２が形成されている。該収納案内部２には、可動プーリ半体５の円筒状外周部５ｄが収納されるものであり、このような構成にて動力側変速プーリＢが連結体Ａ内に所定の位置に支持されることができる。
【００１６】
その動力伝達装置における動力側変速プーリＢは、主に、可動プーリ半体５，固定プーリ半体６，ランププレート７及びウエイトローラ８とから構成されている〔図５，図１５（Ｂ）参照〕。その可動プーリ半体５と固定プーリ半体６とが対向して一組のプーリを構成する。その可動プーリ半体５は、略偏平円錐形状のベルト当接板５ａ及びボス部５ｂとから形成されている。また、同様に固定プーリ半体６は、略偏平円錐形状のベルト当接板６ａ及びボス部６ｂとから形成されている。
【００１７】
そのベルト当接板５ａとベルト当接板６ａとは、それぞれベルト２０と当接するベルト当接傾斜面５ａ₁及びベルト当接傾斜面６ａ₁を有し、両方のベルト当接傾斜面５ａ₁とベルト当接傾斜面６ａ₁とが対向し、両面はそれぞれ同一傾斜となっている。その固定プーリ半体６のボス部６ｂには、前記ベルト当接板６ａの背面側より突出する背面側ボス部６ｂ₂が形成されている。該背面側ボス部６ｂ₂には、クラッチ用噛合部６ｃが形成され、後述するスターター部Ｄのクラッチ機構部と噛み合うことができる構造となっている（図２，図３参照）。
【００１８】
そのベルト当接傾斜面５ａ₁とベルト当接傾斜面６ａ₁とが対向することで断面略Ｖ字形状を構成し、前記ベルト当接板５ａとベルト当接板６ａとが断面略Ｖ字形状のベルト２０が挟持しつつ、巻き掛けられるようになっている。その可動プーリ半体５が軸方向に沿って移動し、その固定プーリ半体６と可動プーリ半体５とが近接したり離間したりすることにより前記ベルト当接傾斜面５ａ₁とベルト当接傾斜面６ａ₁との間隔が可変構造となる。
【００１９】
上記動力側変速プーリＢは、その可動プーリ半体５及び固定プーリ半体６等の形状，構造等により複数のタイプが存在する。その第１タイプは、固定プーリ半体６のボス部６ｂにおいて、前記ベルト当接傾斜面６ａ₁側から突出した表面側ボス部６ｂ₁が形成されている〔図７（Ａ），（Ｂ）参照〕。該表面側ボス部６ｂ₁が前記可動プーリ半体５のボス部５ｂの貫通孔に挿入され、前記可動プーリ半体５がその表面側ボス部６ｂ₁の軸方向に摺動自在となり、可動プーリ半体５が固定プーリ半体６に近接及び離間自在となっている。
【００２０】
その可動プーリ半体５のボス部５ｂの内周側面には摺動が容易となる摺動部材１０が装着され、固定プーリ半体６の表面側ボス部６ｂ₁を可動プーリ半体５の摺動性を良好となるようにすることができる。該摺動部材１０は、合成樹脂又は金属等から形成され、摺動性の良好なる部材が選定される（図５参照）。
【００２１】
さらに、固定プーリ半体６の表面側ボス部６ｂ₁の軸端で且つ前記可動プーリ半体５の背面側に位置するようにしてランププレート７が固着される。該ランププレート７の中心部には貫通孔７ａが形成され、表面側ボス部６ｂ₁の軸端部の段差により形成された小径端部６ｄが形成され、該小径端部６ｄにランププレート７が装着されリング状ナット等のロック部材３０を介してランププレート７が固着される（図２，図７等参照）。
【００２２】
そのランププレート７には、前述したように貫通孔７ａが形成された中心部の周囲に複数の傾斜板片７ｂ，７ｂ，…が略放射状に形成され、該傾斜板片７ｂと可動プーリ半体５のベルト当接板５ａの裏面側との間にウエイトローラ８が配置されている〔図２，図１５（Ｂ）参照〕。
【００２３】
そして、ランププレート７は、可動プーリ半体５とともに回転するように係止部７ｃが形成されており、可動プーリ半体５の裏面側に形成されたリブ５ｃに遊挿状態且つ軸方向に沿ってのみ移動可能に係止されているものである。これによって、可動プーリ半体５とランププレート７とは、ともに回転する構造となっている。その可動プーリ半体５の裏面側とそれぞれの傾斜板片７ｂ，７ｂ，…との間にウエイトローラ８，８，…が非固定状態に配置されている〔図１５（Ｂ）参照〕。
【００２４】
その固定プーリ半体６と可動プーリ半体５との回転速度が増加するに従い、前記ウエイトローラ８がその遠心力により、外径方向に沿って移動し、これによってウエイトローラ８が可動プーリ半体５を軸方向に沿って移動させ、固定プーリ半体６側に押し付ける作用を行うものである〔図１５（Ｃ）参照〕。
【００２５】
また、可動プーリ半体５及び固定プーリ半体６の回転速度が下がりはじめると、遠心力も小さくなり、ウエイトローラ８は可動プーリ半体５のボス部５ｂ側に近接することとなる。そして、固定プーリ半体６と可動プーリ半体５との距離が変化することで巻き掛けられているベルト２０の係合する径の大きさを変えることができる。
【００２６】
このようにして、前記可動プーリ半体５のベルト当接板５ａと固定プーリ半体６のベルト当接板６ａとの間隔が回転速度に伴い変化することで、その可動プーリ半体５と固定プーリ半体６に巻き掛けられたベルト２０の支持直径が変化することにより、変速することができる。
【００２７】
その可動プーリ半体５には、ベルト当接板５ａの周囲から、該ベルト当接板５ａの背面側に沿って円周状の円筒状外周部５ｄが形成されている（図５参照）。該円筒状外周部５ｄは、偏平円筒形状をなしており、前記収納案内部２の包囲壁面部２ａ内に収納される構造となっている。また、前記円筒状外周部５ｄは、ベルト当接板５ａの外径と同一の外径に形成されたり、或いはベルト当接板５ａの外径よりも僅かに小さく形成されることもあるし、ベルト当接板５ａの外径よりも僅かに大きく形成されることもある。
【００２８】
また、上記円筒状外周部５ｄの外径は、前記収納案内部２の包囲壁面部２ａの内径よりも小さいものであるが、その収納案内部２と円筒状外周部５ｄとの間に生じる隙間は小さいことが好ましい。即ち、包囲壁面部２ａ内で可動プーリ半体５がクランクシャフト２２に未装着で軸支されない状態の可動プーリ半体５の収納案内部２内での倒れ幅を最小限にするものである。具体的には、その隙間は２ミリ程度が望ましいが、これに限定されることなく、適宜最適な隙間を設定することができることは勿論である。
【００２９】
次に、動力側変速プーリＢの第２タイプとしては、前記固定プーリ半体６のボス部６ｂの表面側ボス部６ｂ₁が形成されないものであり、その表面側ボス部６ｂ₁の代わりに、固定プーリ半体６とは別部材としたスリーブ部材９が使用されるものである（図２，図４，図５参照）。
【００３０】
該スリーブ部材９の軸方向一端側に固定プーリ半体６が圧入手段等により固着され、そのスリーブ部材９が可動プーリ半体５のボス部５ｂに挿入し、可動プーリ半体５がスリーブ部材９の軸方向に沿って摺動自在なる構造となっている。そして、可動プーリ半体５のボス部５ｂとスリーブ部材９との間には、前述したように、摺動部材１０が装着され、可動プーリ半体５の摺動性を良好にしている。また、ランププレート７は、スリーブ部材９の軸方向端部で且つ可動プーリ半体５のベルト当接板５ａの背面側に位置して固着されている。ランププレート７は、前述したように、リング状ナット等のロック部材３０を介して固着されたり、或いは溶接手段により固着される。
【００３１】
次に、動力側変速プーリＢの第３タイプとしては、前記ランププレート７が前記スリーブ部材９又は固定プーリ半体６のボス部６ｂに固着されないもので、前記伝達軸２３側に形成された段差部２３ｃと，スリーブ部材９或いはボス部６ｂとの間に挟持される構造としたものである（図４，図５等参照）。また、ランププレート７と伝達軸２３の段差部２３ｃとの間にはカラー部材が必要に応じて装着されることもある。
【００３２】
前記カバー体Ｅには、スターター部Ｄが組付けられている。該スターター部Ｄは、始動軸１３に始動用歯車１４が装着されており、クラッチ１５には被始動用歯車１５ａ及びクラッチ歯１５ｂが形成されている。そして、前記クラッチ１５がカバー体Ｅに回転自在に軸支され、且つそのクラッチ１５にはスタータースプリング１６が装着されている（図３，図５等参照）。
【００３３】
そして、常時はクラッチ１５のクラッチ歯１５ｂと前記固定プーリ半体６側のクラッチ用噛合部６ｃとが離間状態であり、前記スターターペダルを介して回転する始動軸１３とともに始動用歯車１４が回転する。次に、該始動用歯車１４を介してクラッチ１５が回転する。
【００３４】
該クラッチ１５の回転すると、前記スタータースプリング１６が作動して、固定プーリ半体６側のクラッチ用噛合部６ｃとクラッチ歯１５ｂとが噛み合い、固定プーリ半体６から伝達軸２３を介してクランクシャフト２２に回転を与えてエンジンを始動させることができる。
【００３５】
次に、上記の第１乃至第３タイプの動力側変速プーリＢにおいて、固定プーリ半体６はカバー体Ｅ側に形成された被遊挿支持部４を介してハウジング内に回動自在に支持固定される。具体的には、被遊挿支持部４は円筒状をなし、前記固定プーリ半体６の背面側ボス部６ｂ₂を遊挿状態で収容するものである。その被遊挿支持部４は、前記クラッチ１５が兼用されるものである（図４，図５，図７等参照）。
【００３６】
即ち、クラッチ１５のクラッチ歯１５ｂの内方側が挿通孔となっており、これが被遊挿支持部４として使用されるものである。上記被遊挿支持部４により、動力側変速プーリＢの固定プーリ半体６側が軸支され、且つ可動プーリ半体５側は前記収納案内部２の包囲壁面部２ａにより支持される。なお、図９，図１０（Ａ），（Ｂ）に示されたものでは、前記固定プーリ半体６の背面側ボス部６ｂ₂は、被遊挿支持部４には遊挿していない状態であり、動力側変速プーリＢは前記収納案内部２のみで支持されている。
【００３７】
次に、従動側変速プーリＣは、前記動力側変速プーリＢと同様に従動側可動プーリ半体１７と従動側固定プーリ半体１８とから構成され、前記動力側変速プーリＢと同様に、従動側固定プーリ半体１８に対して従動側可動プーリ半体１７が近接，離間する構造となっている。
【００３８】
その従動側可動プーリ半体１７と従動側固定プーリ半体１８とから構成される従動側変速プーリＣの回転とともに回転する出力軸１９が設けられている（図１，図３参照）。また、従動側変速プーリＣと連結する減速ギア装置Ｆは、ギアを数段に噛合わせてタイヤハブ２５に連結固定されるものである。その減速ギア装置Ｆには、タイヤハブ２５に直結するタイヤ駆動軸２１が装着されている。該出力軸１９の回転が減速ギア装置Ｆより伝達され減速ギア装置Ｆに装着されたタイヤ駆動軸２１に回転が伝達される。
【００３９】
次に、二輪車において、エンジンとタイヤとは、平面より見て縦列に配置され、その側部側に動力側変速プーリＢと従動側変速プーリＣとが装着された連結体Ａが設られ、該連結体Ａがベースとなって、無段変速プーリ装置が構成される。エンジンのクランクシャフト２２は、側部側に突出して、無段変速プーリ装置の取付部分を構成する。前記エンジン側の変速プーリのベルト係合径の変化に応じて、ベルト２０により軸方向に移動し、タイヤ側の変速プーリのベルト係合径を変化させる。
【００４０】
次に、上記の第１乃至第３タイプの動力側変速プーリＢにおいて、固定プーリ半体６が包囲面部材１１を介して連結体Ａとカバー体Ｅとによるハウジング内に回動自在に支持される実施例が存在する。前記包囲面部材１１は、その中心箇所に前記固定プーリ半体６のボス部６ｂ（背面側ボス部６ｂ₂）を軸支するための軸支用貫通孔１１ｃが形成されたものである（図１１，図１２等参照）。
【００４１】
その軸支用貫通孔１１ｃは、固定プーリ半体６のボス部６ｂ（背面側ボス部６ｂ₂）が遊挿できる程度、即ち余裕を持って挿通することができる程度の直径となっており、固定プーリ半体６を回転自在に支持するものである（図１１，図１２参照）。その軸支用貫通孔１１ｃの周囲には、放射状に複数の固定用腕部１１ｂ，１１ｂ，…が形成されている。該固定用腕部１１ｂには、固定用貫通孔１１ｂ₁が形成されている。
【００４２】
また、連結体Ａ側又はカバー体Ｅ側のいずれか一方には、前記固定用腕部１１ｂに対応して被固定部３，３，…が形成され、該被固定部３には、螺子孔３ａが形成されている。そして、包囲面部材１１の固定用腕部１１ｂ，１１ｂ，…が前記被固定部３，３，…に配置され、ボルトにて固着され、動力側変速プーリＢを支持固定することができる。図１１に示されたものは、包囲面部材１１が連結体Ａ側に固着されたものである。図１２に示されたものは、包囲面部材１１がカバー体Ｅ側に固着されたものである。
【００４３】
また、カバー体Ｅにおいて、前記被遊挿支持部４の形成箇所からカバー体Ｅの内部と外部とを貫通する取付作業用孔２６が形成され、該取付作業用孔２６にはキャップ部材２７が装着されている（図２，図４，図５等参照）。該キャップ部材２７は、前記取付作業用孔２６に対して着脱自在としたものであり、キャップ部材２７の外周側面に螺子部を形成し、また、前記取付作業用孔２６にも内螺子が形成され、両方が螺合する構造としたり、或いはそのキャップ部材２７を取付作業用孔２６に対して嵌め込みタイプとしたものが存在する。
【００４４】
さらに、キャップ部材２７をカバー体Ｅの外方側にヒンジ等を介して開閉タイプとした実施例も存在する。本発明の動力伝達装置を二輪車に装着するときには、そのキャップ部材２７をカバー体Ｅの取付作業用孔２６から外して、その取付作業用孔２６から工具を差し込み、前記ハウジング内の固着具２４を回転させて、伝達軸２３をクランクシャフト２２に接続するものである（図１３，図１４参照）。
【００４５】
次に、動力伝達装置を実際に二輪車に装着する組付方法について以下に説明する。まず、組付方法には、２つのパターンが存在する。第１のパターンは、連結体Ａにカバー体Ｅを被せてハウジングを構成したタイプで、カバー体Ｅには前記減速ギア装置Ｆは装着されていない。即ち、動力側変速プーリＢと従動側変速プーリＣとを連結体Ａとカバー体Ｅとによるハウジングにて一体的にモジュール化したものである。
【００４６】
まず、動力伝達装置を二輪車のエンジン箇所とタイヤハブ２５箇所に位置合わせしつつ配置し、ハウジングからの前記伝達軸２３の突出部分をクランクシャフト２２の伝達軸受部２２ａ内に挿入し、カバー体Ｅの取付作業用孔２６から工具を差し込んで固着具２４を締め付け、伝達軸２３をクランクシャフト２２に接続固着する。
【００４７】
そして、動力伝達装置を二輪車への装着後、前記取付作業用孔２６にはキャップ部材２７を装着しておく。このパターンでは、工程はタイヤハブ２５に減速ギア装置Ｆが装着されていることを前提として１回の工程で完了する（図１３参照）。
【００４８】
次に、組付方法の第２パターンを説明する。該パターンでは、前記第１パターンにカバー体Ｅを被せてハウジング化し、さらにそのハウジングの連結体Ａ側に減速ギア装置Ｆが装着されたものである。即ち、動力側変速プーリＢと従動側変速プーリＣと減速ギア装置Ｆとをハウジングにて一体的にモジュール化したものである。該パターンでは、動力伝達装置を１箇所で組み立てておくことができ、且つ二輪車への装着が最も簡易且つ迅速に行われるものであり、作業工程を最小限に抑えることができる（図１４参照）。
【００４９】
【発明の効果】
請求項１の発明は、軸方向に沿って中空部２３ａを有し、クランクシャフト２２の軸端に軸方向に沿って接続される伝達軸２３と、固定プーリ半体６と，外周に円筒状外周部５ｄを形成した可動プーリ半体５と，該可動プーリ半体５を前記固定プーリ半体６側に近接させるランププレート７及びウエイトローラ８とから構成され，前記伝達軸２３にて軸支される動力側変速プーリＢと、該動力側変速プーリＢとベルト２０を介して動力伝達される従動側変速プーリＣと、内面側１ａに前記可動プーリ半体５の円筒状外周部５ｄを遊挿可能で，且つその円筒状外周部５ｄを包囲状に支持する包囲壁面部２ａと，該包囲壁面部２ａの略中心箇所に位置し，外面側１ｂから内面側１ａに、前記クランクシャフト２２と接続する伝達軸２３が貫通する貫通孔２ｂが構成された収納案内部２を有する連結体Ａと、前記中空部２３ａに挿通して前記クランクシャフト２２に伝達軸２３を固着し，且つ該伝達軸２３に固定プーリ半体６を固着するための固着具２４と、前記連結体Ａの内面側１ａを被覆して連結体Ａとで前記無段変速プーリ装置のハウジングを構成するカバー体Ｅとからなり、前記ハウジングにベルト２０にて巻き掛けられた動力側変速プーリＢと従動側変速プーリＣとが装着されてなる動力伝達装置としたことにより、まず第１に動力伝達装置を動力側変速プーリＢと従動側変速プーリＣとの構成単位（モジュール）化した状態で、エンジンとタイヤに、簡易且つ迅速に装着することができ、従来には見られない組付性の向上と、生産性の向上が図れ、製造コストの低減を図ることができる。
【００５０】
上記効果を詳述すると、まず連結体Ａ側には、その内面側１ａに前記可動プーリ半体５を支持するための収納案内部２が形成されている。従って、動力伝達装置が二輪車に未装着状態、即ち、動力側変速プーリＢがクランクシャフト２２に装着されていない状態でも、動力側変速プーリＢは、前記収納案内部２を介して連結体Ａの所定の位置に支持されている。
【００５１】
また、動力側変速プーリＢは、前記伝達軸２３により軸支状態であり、該伝達軸２３は固着具２４によってクランクシャフト２２に装着するものであるから、前記連結体Ａをクランクシャフト２２とタイヤハブ２５側に配置し、前記伝達軸２３とクランクシャフト２２との軸芯位置を一致させ、前記固着具２４にて伝達軸２３とクランクシャフト２２とを軸方向に接続するのみ二輪車に装着することができる。上記操作は比較的容易に行うことができ、作業効率及び生産性を向上させることができるものである。
【００５２】
次に、請求項２の発明は、軸方向に沿って中空部２３ａを有し、クランクシャフト２２の軸端に軸方向に沿って接続される伝達軸２３と、固定プーリ半体６と，外周に円筒状外周部５ｄを形成した可動プーリ半体５と，該可動プーリ半体５を前記固定プーリ半体６側に近接させるランププレート７及びウエイトローラ８とから構成され，前記伝達軸２３にて軸支される動力側変速プーリＢと、該動力側変速プーリＢとベルト２０を介して動力伝達される従動側変速プーリＣと、内面側１ａに前記可動プーリ半体５の円筒状外周部５ｄを遊挿可能で，且つその円筒状外周部５ｄを包囲状に支持する包囲壁面部２ａと，該包囲壁面部２ａの略中心箇所に位置し，外面側１ｂから内面側１ａに前記クランクシャフト２２が貫通する貫通孔２ｂとから構成される収納案内部２を有する連結体Ａと、前記中空部２３ａに挿通して前記クランクシャフト２２に伝達軸２３を固着し，且つ該伝達軸２３に固定プーリ半体６を固着するための固着具２４と、前記連結体Ａの内面側１ａを被覆して連結体Ａとで前記無段変速プーリ装置のハウジングを構成するカバー体Ｅとからなり、前記ハウジングにベルト２０にて巻き掛けられた動力側変速プーリＢと従動側変速プーリＣとが装着されてなる動力伝達装置としたことにより、まず、第１に動力伝達装置を動力側変速プーリＢと従動側変速プーリＣとの構成単位（モジュール）化した状態で、エンジンとタイヤハブ２５に、簡易且つ迅速に装着することができ、従来には見られない組付性の向上と、生産性の向上が図れ、製造コストの低減を図ることができる。
【００５３】
上記効果を詳述すると、可動プーリ半体５の外周には、円筒状外周部５ｄが形成されている。そして、連結体Ａ側には、その内面側１ａに前記可動プーリ半体５を支持するための収納案内部２が形成されている。該収納案内部２は、前記円筒状外周部５ｄが遊挿可能で，且つその円筒状外周部５ｄを包囲状に支持することができる包囲壁面部２ａと、該包囲壁面部２ａの略中心箇所に形成され，外面側１ｂから内面側１ａに前記クランクシャフト２２との装着用の貫通孔２ｂが形成されている。
【００５４】
その収納案内部２の包囲壁面部２ａ内に可動プーリ半体５の円筒状外周部５ｄが挿入されることで、可動プーリ半体５は、収納案内部２により極めて安定的な支持状態となる。従って、動力伝達装置を二輪車に未装着状態、即ち、動力側変速プーリＢがクランクシャフト２２に装着されていない状態において、動力側変速プーリＢは、前記収納案内部２を介して連結体Ａの所定の位置で、あたかも、軸支されたごとく支持固定されている。
【００５５】
即ち、収納案内部２が動力側変速プーリＢを回転自在に軸支する役目をなし、連結体Ａでの動力側変速プーリＢの軸方向に対する倒れ幅を最小限に抑えることができる。これによって、動力側変速プーリＢの中心位置には、ほとんどガタ付きが生ずることがない。それゆえに、その動力側変速プーリＢの軸芯位置を略定位置を維持することができ、伝達軸２３をクランクシャフト２２に接続することが容易にできる。
【００５６】
また、従動側変速プーリＣもタイヤに減速ギア装置Ｆを介して容易に装着させることができるものである。このように、連結体Ａに少なくとも動力側変速プーリＢと従動側変速プーリＣとが装着され、一体化されることにより、作業効率及び生産性を向上させることができるものである。
【００５７】
次に、請求項３の発明は、請求項１又は２において、前記ハウジングの連結体Ａの外面側１ｂに装着し、前記従動側変速プーリＣと連結し、タイヤハブ２５に装着可能な減速ギア装置Ｆを設けてなる動力伝達装置としたことにより、動力伝達装置には、エンジンのクランクシャフト２２及びタイヤハブ２５に装着するための略全ての部材を備えたものにすることができる。これによって、最も工程が少なく且つ作業が簡単で、効率的なものにできる。
【００５８】
次に、請求項４の発明は、請求項１，２又は３において、前記動力側変速プーリＢは、固定プーリ半体６に軸方向に突出状に形成され，前記伝達軸２３が挿通するボス部６ｂの表面側ボス部６ｂ₁に前記可動プーリ半体５が軸方向に摺動自在とし、前記ランププレート７は、前記固定プーリ半体６の表面側ボス部６ｂ₁の軸端に固着されてなる動力伝達装置としたことにより動力側変速プーリＢを構成する部材を最小限にすることができ、動力伝達装置の組立作業を簡単なものにすることができる。
【００５９】
次に、請求項５の発明は、請求項１，２又は３において、前記動力側変速プーリＢは、前記固定プーリ半体６と別部材のスリーブ部材９が設けられ、該スリーブ部材９の軸端に固定プーリ半体６が配置され、前記可動プーリ半体５は前記スリーブ部材９を軸方向に摺動自在に装着し、前記ランププレート７は、前記スリーブ部材９の軸端に固着してなる動力伝達装置としたことにより、請求項４の効果と同様に動力側変速プーリＢの構成部材を極めて少なくすることができるものである。
【００６０】
次に、請求項６の発明は、請求項１，２，３，４又は５において、前記カバー体Ｅには、前記動力側変速プーリＢの固定プーリ半体６の背面側ボス部６ｂ₂が遊挿する被遊挿支持部４が形成がされてなる動力伝達装置としたことにより、前記動力側変速プーリＢは、連結体Ａとカバー体Ｅとからなるハウジング内にて安定した支持状態を得ることできる。
【００６１】
上記効果を詳述すると、前記動力側変速プーリＢは、ハウジング内において、その可動プーリ半体５側が収納案内部２に支持され、固定プーリ半体６が前記被遊挿支持部４により支持され、その結果、動力側変速プーリＢの軸方向両端が収納案内部２と被遊挿支持部４とで軸支状態となる。そのために、動力側変速プーリＢはハウジング内で、より一層安定した支持状態が確保される。
【００６２】
次に、請求項７の発明は、軸方向に沿って中空部２３ａを有し、クランクシャフト２２の軸端に軸方向に沿って接続される伝達軸２３と、固定プーリ半体６と，可動プーリ半体５と，該可動プーリ半体５を前記固定プーリ半体６側に近接させるランププレート７及びウエイトローラ８とから構成され，前記伝達軸２３にて軸支される動力側変速プーリＢと、該動力側変速プーリＢとベルト２０を介して動力伝達される従動側変速プーリＣと、内面側１ａに前記可動プーリ半体５側を遊挿可能で，且つその可動プーリ半体５を包囲状に支持する包囲壁面部２ａと，該包囲壁面部２ａの略中心箇所に位置し，外面側１ｂから内面側１ａに前記クランクシャフト２２が貫通する貫通孔２ｂとから構成される収納案内部２を有する連結体Ａと、前記中空部２３ａに挿通して前記クランクシャフト２２に伝達軸２３を固着し，且つ該伝達軸２３に固定プーリ半体６を固着するための固着具２４と、前記固定プーリ半体６側を回転自在に支持する包囲面部材１１とからなり、前記連結体Ａに動力側変速プーリＢと従動側変速プーリＣとが装着されてなる動力伝達装置としたことにより、前記動力側変速プーリＢは、連結体Ａに安定した支持状態で装着される。
【００６３】
上記効果を詳述すると、前記動力側変速プーリＢは、その可動プーリ半体５側が収納案内部２に支持され、固定プーリ半体６は前記包囲面部材１１により支持され、その結果、動力側変速プーリＢの軸方向両端が収納案内部２と包囲面部材１１とで軸支状態となる。そのために、動力側変速プーリＢは、連結体Ａ内にてより一層の安定性した支持状態が確保される。
【００６４】
次に、請求項８の発明は、請求項７において、前記連結体Ａの内面側１ａを被覆し，該連結体Ａとで前記無段変速プーリ装置のハウジングを構成するカバー体Ｅを備え、前記ハウジング内に前記包囲面部材１１を介して動力側変速プーリＢが装着されてなる動力伝達装置としたことにより、請求項７と同様に、動力側変速プーリＢは、連結体Ａ内にてより一層の安定性した支持状態が確保される。
【００６５】
次に、請求項９の発明は、軸方向に沿って中空部２３ａを有し、クランクシャフト２２の軸端に軸方向に沿って接続される伝達軸２３と、固定プーリ半体６と，外周に円筒状外周部５ｄを形成した可動プーリ半体５と，該可動プーリ半体５を前記固定プーリ半体６側に近接させるランププレート７及びウエイトローラ８とから構成し，前記伝達軸２３にて軸支される動力側変速プーリＢと、前記動力側変速プーリＢとベルト２０を介して動力伝達する従動側変速プーリＣと、内面側１ａに前記可動プーリ半体５の円筒状外周部５ｄを遊挿可能で，且つその円筒状外周部５ｄを包囲状に支持する包囲壁面部２ａと，該包囲壁面部２ａの略中心箇所に位置し，外面側１ｂから内面側１ａに前記クランクシャフト２２が貫通する貫通孔２ｂとから構成される収納案内部２を有する連結体Ａと、前記中空部２３ａに挿通して前記クランクシャフト２２に伝達軸２３を固着し，且つ該伝達軸２３に固定プーリ半体６を固着するための固着具２４と、前記連結体Ａの内面側１ａを被覆して連結体Ａとで無段変速プーリ装置のハウジングを構成するカバー体Ｅとからなり、前記連結体Ａには動力側変速プーリＢと従動側変速プーリＣとを配置し、且つ前記収納案内部２に可動プーリ半体５を収納し、前記連結体Ａにカバー体Ｅを装着し、その動力側変速プーリＢに装着された伝達軸２３をクランクシャフト２２に軸方向に接続し、且つ固着具２４にてクランクシャフト２２に固着し、前記従動側変速プーリＣはタイヤハブ２５側に装着した減速ギア装置Ｆに接続してなる動力伝達装置の組付方法としたことにより、連結体Ａとカバー体Ｅとでハウジングを構成し、略一体的にモジュール化としたことで、これを別の工場に輸送する等の工程までを含めて効率化させることができる。
【００６６】
次に、請求項１０の発明は、請求項９において、前記連結体Ａには、従動側変速プーリＣ側に減速ギア装置Ｆを装着した状態で、タイヤハブ２５側に装着してなる動力伝達装置の組付方法としたことにより、連結体Ａとカバー体Ｅによりハウジングにさらに減速ギア装置Ｆを装着したものでモジュール化にしたことで、二輪車に対して最も簡易且つ迅速に装着することができる。
【図面の簡単な説明】
【図１】本発明の断面図
【図２】ハウジング内に装着された動力側変速プーリ側にクランクシャフトを挿通した状態の要部断面図
【図３】本発明において連結体とカバー体と減速ギア装置とを分離した状態の断面図
【図４】本発明の動力側変速プーリ側からクランクシャフトが外された状態の要部断面図
【図５】連結体と動力側変速プーリと支持部材を分離した状態の断面図
【図６】可動プーリ半体，固定プーリ半体，ランププレート，伝達軸及び固着具を分離した状態の断面図
【図７】（Ａ）は本発明の別の実施例の動力側変速プーリを装着した断面図
（Ｂ）は（Ａ）とは異なる実施例の動力側変速プーリの断面図
【図８】（Ａ）は図７とは異なる別の実施例の動力側変速プーリの断面図
（Ｂ）は（Ａ）とは異なる実施例の動力側変速プーリの断面図
【図９】本発明の第２実施形態の断面図
【図１０】（Ａ）は第２実施形態に別の実施例の動力側変速プーリを装着した断面図
（Ｂ）は第２実施形態に（Ａ）とは異なる実施例の動力側変速プーリを装着した断面図
【図１１】動力側変速プーリの固定プーリ半体を連結体に包囲面部材を介して軸支した実施例の断面図
【図１２】動力側変速プーリの固定プーリ半体をカバー体に包囲面部材を介して軸支した実施例の断面図
【図１３】組付方法の第１パターンの工程を示す略示図
【図１４】組付方法の第２パターンの工程を示す略示図
【図１５】（Ａ）は動力側変速プーリの収納案内部との分離した状態の斜視図
（Ｂ）は可動プーリ半体とランププレートとウエイトローラとを示す一部断面にした背面図
（Ｃ）はランププレートとウエイトローラとの動作を示す要部断面図
【図１６】従来工程の略示図
【符号の説明】
Ａ…連結体
Ｂ…動力側変速プーリ
Ｃ…従動側変速プーリ
Ｅ…カバー体
Ｆ…減速ギア装置
１ａ…内面側
１ｂ…外面側
２ａ…包囲壁面部
２ｂ…貫通孔
４…被遊挿支持部
５…可動プーリ半体
５ｄ…円筒状外周部
６…固定プーリ半体
６ｂ…ボス部
６ｂ₁…表面側ボス部
６ｂ₂…背面側ボス部
７…ランププレート
８…ウエイトローラ
９…スリーブ部材
１１…包囲面部材
２０…ベルト
２２…クランクシャフト
２３…伝達軸
２４…固着具
２５…タイヤハブ[0001]
BACKGROUND OF THE INVENTION
The present invention provides a continuously variable transmission pulley device and a reduction gear device between an engine and a tire in a motorcycle and the like, and a device that transmits the driving force of the engine to the tire at an appropriately variable speed is simple, quick, and efficient. TECHNICAL FIELD The present invention relates to a power transmission device that can be mounted on a vehicle and a method for assembling the same.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in some motorcycles, a continuously variable transmission pulley device and a reduction gear device are provided between an engine and a tire so that the driving force of the engine is appropriately variable and transmitted to the tire. The engine, the continuously variable transmission pulley device, the reduction gear device, and the respective devices are formed into structural units (modules).
[0003]
[Problems to be solved by the invention]
However, as shown in FIG. 16, the engine-side crankshaft [output shaft (b)], continuously variable transmission pulley device (primary pulley (b), driven pulley (c), belt (d)), reduction gear device ( E) Even if the components such as the housing body (f) and housing cover (g) are modularized as respective devices, it is difficult to assemble the motorcycle body as it is as a modular device. For this reason, the components of the other device must be assembled to the connected components provided in one device, making it difficult to improve assembly and improving productivity and reducing manufacturing costs. could not.
[0004]
Specifically, in the case of a continuously variable transmission pulley device connected to a crankshaft of an engine, a cover that constitutes a modularization of the continuously variable transmission pulley device after the components of the transmission pulley device are assembled to the crankshaft. Must be installed. In other words, the continuously variable pulley device that is modularized is not assembled while being modularized with the engine, and its components are assembled to the crankshaft of the engine, so that The module called the pulley device was completed.
[0005]
[Means for Solving the Problems]
Therefore, as a result of intensive studies and researches, the inventor has a hollow portion along the axial direction and is connected to the axial end of the crankshaft along the axial direction. A transmission shaft, a fixed pulley half, a movable pulley half having a cylindrical outer periphery formed on the outer periphery, a ramp plate and a weight roller for bringing the movable pulley half close to the fixed pulley half, A power-side transmission pulley supported by the transmission shaft, a driven-side transmission pulley that transmits power via the power-side transmission pulley and the belt, and a cylindrical outer peripheral portion of the movable pulley half are loosely inserted on the inner surface side. An encircling wall surface capable of encirclingly supporting the cylindrical outer periphery, and a transmission shaft connected to the crankshaft penetrates from the outer surface side to the inner surface side at a substantially central position of the encircling wall surface portion. Storage guide with through holes A coupling body having an inner surface of the coupling body, and a fixing tool for fixing the transmission shaft to the crankshaft and fixing the fixed pulley half to the transmission shaft. A power transmission device comprising a power transmission pulley and a driven transmission pulley wound around a belt around the housing. And its assembly method, etc., so that the power transmission device of the continuously variable transmission pulley device and the reduction gear device provided between the engine and the tire can be easily assembled while the power transmission device of the reduction gear device is made into a structural unit (module). A transmission device is provided so as to improve assemblability and improve productivity and reduce manufacturing costs.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, the configuration of the apparatus in the present invention is mainly composed of a connecting body A, a power side transmission pulley B, a cover body E, a driven side transmission pulley C, and the like. A continuously variable transmission pulley device and a reduction gear device are mounted on the connecting body A, and a crankshaft 22 provided at an engine mounting location of the motorcycle and a tire hub 25 as a module configured by aggregating these members. It is installed between. The cover body E serves to cover (cover) the opening of the connection body A. And the connection body A and the cover body E comprise a housing (refer FIG. 1).
[0007]
The continuously variable transmission pulley device mainly includes a power-side transmission pulley B, a driven-side transmission pulley C, and a belt 20 wound around both transmission pulleys (see FIGS. 1 and 3). Further, the reduction gear device F is mounted with an axle that is directly connected to the tire hub 25, and the reduction gear device F is connected to the driven transmission pulley C to transmit the rotational force to the tire of the motorcycle.
[0008]
The connecting body A and the continuously variable transmission pulley device, or a cover body E attached to the connecting body A, or a reduction gear device F to be described later is added to the continuously variable transmission pulley device to form one structural unit, A power transmission device is configured. And as above-mentioned, this power transmission device shall be mounted in the two-wheeled vehicle side.
[0009]
Next, the power-side speed change pulley B is attached to the engine-side crankshaft 22 via the transmission shaft 23 and the fixing tool 24. The transmission shaft 23 is a hollow shaft, and a hollow through hole-shaped hollow portion 23a is formed along the axial direction. Further, a step portion 23c is formed on the outer peripheral side surface portion. A tapered portion 23b is formed at one end in the axial direction (see FIG. 6).
[0010]
Further, the fixing tool 24 has a bolt shape and is composed of a head portion 24a and a screw shaft portion 24b. The screw shaft portion 24b is inserted into the hollow portion 23a of the transmission shaft 23. The head portion 24a is a presser plate piece 24a. ₁ Is formed, and the power-side transmission pulley B can be fixed to the transmission shaft 23 by pressing a fixed pulley half 6 described later (see FIG. 2 and the like).
[0011]
On the crankshaft 22 side, a concave-hole-shaped transmission bearing portion 22a into which the tapered portion 23b of the transmission shaft 23 is inserted is formed. On the bottom surface of the transmission bearing portion 22a, the screw shaft portion 24b of the fixing tool 24 is formed. An inner screw hole portion 22b that is screwed with is formed (see FIG. 4). Then, the tapered portion 23b of the transmission shaft 23 is inserted into the transmission bearing portion 22a of the crankshaft 22, the screw shaft portion 24b of the fixing tool 24 is inserted into the hollow portion 23a of the transmission shaft 23, and the screw shaft portion 24b is The transmission shaft 23 is fixedly fastened to the screw hole 22b.
[0012]
The connecting body A is formed with a storage guide portion 2 for mounting the power-side transmission pulley B on the case body 1 (see FIGS. 2 and 4). The storage guide portion 2 is composed of an encircling wall surface portion 2a and a through hole 2b (see FIG. 5, FIG. 15A, etc.). The surrounding wall surface portion 2a is formed on a substantially circumferential inner wall surface, and the cylindrical outer peripheral portion 5d of the movable pulley half 5 in the power-side transmission pulley B is accommodated and supported by the connecting body A at a predetermined position. (See FIG. 4).
[0013]
The crankshaft 22 and the transmission shaft 23 are connected via the through hole 2b, and the power-side transmission pulley B is pivotally supported by the transmission shaft 23. The movable guide half 5 of the power-side transmission pulley B can be supported at a predetermined position in the connecting body A by the storage guide portion 2 (see FIG. 2).
[0014]
A specific shape of the storage guide portion 2 is an enveloping wall surface portion 2a that surrounds a cylindrical outer peripheral portion 5d (described later) formed in the movable pulley half 5 (see FIG. 5). See FIGS. 6 and 15A]. The surrounding wall surface portion 2a may be a continuously formed circumferential wall surface, or arcuate wall surfaces may be intermittently assembled at an appropriate interval. Further, the reinforcing rib formed on the inner surface side 1a of the connection body A may be formed so as to also serve as the surrounding wall surface portion 2a.
[0015]
The connecting body A is formed with a storage guide 2 for mounting the power-side transmission pulley B on the case body 1. The storage guide portion 2 stores the cylindrical outer peripheral portion 5d of the movable pulley half 5. The power-side transmission pulley B is supported at a predetermined position in the connecting body A in such a configuration. Can.
[0016]
The power-side transmission pulley B in the power transmission device is mainly composed of a movable pulley half 5, a fixed pulley half 6, a ramp plate 7, and a weight roller 8 [see FIGS. 5 and 15B]. ]. The movable pulley half 5 and the fixed pulley half 6 face each other to constitute a set of pulleys. The movable pulley half 5 is formed of a belt contact plate 5a and a boss portion 5b having a substantially flat conical shape. Similarly, the fixed pulley half 6 is formed of a belt contact plate 6a and a boss portion 6b having a substantially flat conical shape.
[0017]
The belt contact plate 5a and the belt contact plate 6a are each a belt contact inclined surface 5a that contacts the belt 20. ₁ And belt contact inclined surface 6a ₁ Both belt contact inclined surfaces 5a ₁ And belt contact inclined surface 6a ₁ Are opposed to each other, and both sides have the same inclination. The boss 6b of the fixed pulley half 6 has a back side boss 6b protruding from the back side of the belt contact plate 6a. ₂ Is formed. Back side boss 6b ₂ Is formed with a clutch engagement portion 6c, which can be engaged with a clutch mechanism portion of a starter portion D described later (see FIGS. 2 and 3).
[0018]
The belt contact inclined surface 5a ₁ And belt contact inclined surface 6a ₁ And the belt contact plate 5a and the belt contact plate 6a are wound around the belt 20 having a substantially V-shaped cross section. . The movable pulley half 5 moves along the axial direction, and the fixed pulley half 6 and the movable pulley half 5 approach or separate from each other, whereby the belt contact inclined surface 5a. ₁ And belt contact inclined surface 6a ₁ The interval between and becomes a variable structure.
[0019]
The power transmission pulley B has a plurality of types depending on the shape, structure, etc. of the movable pulley half 5 and the fixed pulley half 6. The first type is the belt contact inclined surface 6a in the boss portion 6b of the fixed pulley half 6. ₁ Surface side boss 6b protruding from the side ₁ Is formed [see FIGS. 7A and 7B]. The surface side boss 6b ₁ Is inserted into the through hole of the boss portion 5b of the movable pulley half 5, and the movable pulley half 5 is connected to the surface side boss portion 6b. ₁ The movable pulley half 5 can be moved close to and away from the fixed pulley half 6.
[0020]
A sliding member 10 that facilitates sliding is mounted on the inner peripheral side surface of the boss portion 5 b of the movable pulley half 5, and the surface side boss portion 6 b of the fixed pulley half 6 is mounted. ₁ Thus, the sliding property of the movable pulley half 5 can be improved. The sliding member 10 is made of a synthetic resin, metal, or the like, and a member having good sliding properties is selected (see FIG. 5).
[0021]
Further, the front-side boss 6b of the fixed pulley half 6 ₁ The lamp plate 7 is fixed so as to be positioned on the rear side of the movable pulley half 5 at the shaft end. A through-hole 7a is formed at the center of the lamp plate 7, and the surface-side boss 6b ₁ A small-diameter end portion 6d formed by a step at the shaft end portion is formed, and the lamp plate 7 is attached to the small-diameter end portion 6d, and the lamp plate 7 is fixed through a lock member 30 such as a ring-shaped nut (see FIG. 2, see FIG.
[0022]
In the lamp plate 7, a plurality of inclined plate pieces 7b, 7b,... Are formed substantially radially around the central portion where the through hole 7a is formed as described above, and the inclined plate piece 7b and the movable pulley half are formed. The weight roller 8 is disposed between the belt contact plate 5a and the back surface side of the belt contact plate 5a (see FIGS. 2 and 15B).
[0023]
The ramp plate 7 is formed with a locking portion 7c so as to rotate together with the movable pulley half 5, and is loosely inserted into the rib 5c formed on the back surface side of the movable pulley half 5 along the axial direction. It is locked so that it can only move. Thereby, the movable pulley half 5 and the lamp plate 7 are both rotated. The weight rollers 8, 8,... Are arranged in a non-fixed state between the back side of the movable pulley half 5 and the respective inclined plate pieces 7b, 7b,... (See FIG. 15B).
[0024]
As the rotational speeds of the fixed pulley half 6 and the movable pulley half 5 increase, the weight roller 8 moves along the outer diameter direction by the centrifugal force, whereby the weight roller 8 moves to the movable pulley half. 5 is moved along the axial direction and pressed against the fixed pulley half 6 side (see FIG. 15C).
[0025]
Further, when the rotational speeds of the movable pulley half 5 and the fixed pulley half 6 begin to decrease, the centrifugal force also decreases, and the weight roller 8 comes close to the boss portion 5 b side of the movable pulley half 5. And the magnitude | size of the diameter with which the belt 20 currently wound can be changed by the distance of the fixed pulley half 6 and the movable pulley half 5 changing.
[0026]
In this way, the distance between the belt contact plate 5a of the movable pulley half 5 and the belt contact plate 6a of the fixed pulley half 6 changes with the rotation speed, so that the movable pulley half 5 and the fixed pulley half 5 are fixed. The speed can be changed by changing the support diameter of the belt 20 wound around the pulley half 6.
[0027]
The movable pulley half 5 is formed with a circular cylindrical outer peripheral portion 5d from the periphery of the belt contact plate 5a along the back side of the belt contact plate 5a (see FIG. 5). The cylindrical outer peripheral portion 5 d has a flat cylindrical shape and is structured to be stored in the surrounding wall surface portion 2 a of the storage guide portion 2. The cylindrical outer peripheral portion 5d may be formed to have the same outer diameter as that of the belt contact plate 5a or slightly smaller than the outer diameter of the belt contact plate 5a. It may be formed slightly larger than the outer diameter of the belt contact plate 5a.
[0028]
Further, the outer diameter of the cylindrical outer peripheral portion 5d is smaller than the inner diameter of the surrounding wall surface portion 2a of the storage guide portion 2, but a gap generated between the storage guide portion 2 and the cylindrical outer peripheral portion 5d. Is preferably small. That is, the falling width of the movable pulley half 5 in the storage guide portion 2 in a state where the movable pulley half 5 is not attached to the crankshaft 22 and is not pivotally supported in the surrounding wall portion 2a is minimized. Specifically, the gap is preferably about 2 mm, but the present invention is not limited to this, and it is a matter of course that an optimum gap can be set as appropriate.
[0029]
Next, as a second type of the power-side transmission pulley B, the front-side boss portion 6b of the boss portion 6b of the fixed pulley half 6 is used. ₁ Is not formed, and the surface side boss 6b ₁ Instead of this, a sleeve member 9 which is a separate member from the fixed pulley half 6 is used (see FIGS. 2, 4 and 5).
[0030]
The fixed pulley half 6 is fixed to one end side in the axial direction of the sleeve member 9 by press-fitting means or the like, the sleeve member 9 is inserted into the boss portion 5b of the movable pulley half 5, and the movable pulley half 5 is connected to the sleeve member 9. The structure is slidable along the axial direction. As described above, the sliding member 10 is mounted between the boss portion 5b of the movable pulley half 5 and the sleeve member 9 to improve the sliding property of the movable pulley half 5. The ramp plate 7 is fixedly positioned at the end of the sleeve member 9 in the axial direction and on the back side of the belt contact plate 5 a of the movable pulley half 5. As described above, the lamp plate 7 is fixed through the lock member 30 such as a ring-shaped nut, or is fixed by welding means.
[0031]
Next, as a third type of the power-side transmission pulley B, the ramp plate 7 is not fixed to the sleeve member 9 or the boss portion 6b of the fixed pulley half 6, and the step formed on the transmission shaft 23 side. It is structured to be sandwiched between the portion 23c and the sleeve member 9 or the boss portion 6b (see FIGS. 4 and 5). Further, a collar member may be mounted between the lamp plate 7 and the stepped portion 23c of the transmission shaft 23 as necessary.
[0032]
A starter portion D is assembled to the cover body E. In the starter portion D, a start gear 14 is mounted on a start shaft 13, and a start gear 15a and clutch teeth 15b are formed in the clutch 15. The clutch 15 is rotatably supported by the cover body E, and a starter spring 16 is attached to the clutch 15 (see FIGS. 3 and 5).
[0033]
The clutch teeth 15b of the clutch 15 and the clutch engagement portion 6c on the fixed pulley half 6 side are normally separated from each other, and the start gear 14 rotates together with the start shaft 13 that rotates via the starter pedal. . Next, the clutch 15 rotates through the starting gear 14.
[0034]
When the clutch 15 rotates, the starter spring 16 is actuated to engage the clutch meshing portion 6c on the fixed pulley half 6 side and the clutch teeth 15b, and the crankshaft from the fixed pulley half 6 via the transmission shaft 23 is engaged. The engine can be started by rotating 22.
[0035]
Next, in the power transmission pulley B of the first to third types described above, the stationary pulley half 6 is rotatably supported in the housing via the to-be-inserted support portion 4 formed on the cover body E side. Fixed. Specifically, the to-be-inserted support portion 4 has a cylindrical shape, and the back side boss portion 6 b of the fixed pulley half 6. ₂ Is accommodated in a loosely inserted state. The loosely inserted support portion 4 is also used as the clutch 15 (see FIGS. 4, 5, 7, etc.).
[0036]
That is, the inner side of the clutch teeth 15b of the clutch 15 is an insertion hole, which is used as the loose insertion support portion 4. The driven pulley support portion 4 pivotally supports the fixed pulley half 6 side of the power transmission pulley B, and the movable pulley half 5 side is supported by the surrounding wall surface portion 2 a of the storage guide portion 2. 9, 10 </ b> A and 10 </ b> B, the back side boss 6 b of the fixed pulley half 6 is used. ₂ Is a state where it is not loosely inserted into the loosely inserted support portion 4, and the power-side transmission pulley B is supported only by the storage guide portion 2.
[0037]
Next, the driven-side transmission pulley C is composed of a driven-side movable pulley half 17 and a driven-side fixed pulley half 18 as in the power-side transmission pulley B. The driven-side movable pulley half 17 is close to and separated from the side fixed pulley half 18.
[0038]
An output shaft 19 is provided that rotates with the rotation of the driven-side transmission pulley C composed of the driven-side movable pulley half 17 and the driven-side fixed pulley half 18 (see FIGS. 1 and 3). Further, the reduction gear device F connected to the driven side transmission pulley C is connected and fixed to the tire hub 25 by meshing gears in several stages. The reduction gear device F is equipped with a tire drive shaft 21 that is directly connected to the tire hub 25. The rotation of the output shaft 19 is transmitted from the reduction gear device F, and the rotation is transmitted to the tire drive shaft 21 attached to the reduction gear device F.
[0039]
Next, in the two-wheeled vehicle, the engine and the tire are arranged in a column as viewed from above, and a connecting body A in which the power-side transmission pulley B and the driven-side transmission pulley C are mounted is provided on the side portion thereof. A continuously variable transmission pulley apparatus is configured based on the connecting body A. The crankshaft 22 of the engine protrudes to the side and constitutes a mounting portion of the continuously variable transmission pulley device. In accordance with the change in the belt engagement diameter of the engine-side transmission pulley, the belt 20 is moved in the axial direction to change the belt engagement diameter of the tire-side transmission pulley.
[0040]
Next, in the power transmission pulley B of the first to third types described above, the fixed pulley half 6 is rotatably supported in the housing by the connecting body A and the cover body E via the surrounding surface member 11. Examples exist. The surrounding surface member 11 has a boss portion 6b (back side boss portion 6b) of the stationary pulley half 6 at the center. ₂ ) Is formed (see FIGS. 11, 12, etc.).
[0041]
The shaft support through-hole 11c is formed in the boss portion 6b of the fixed pulley half 6 (the rear side boss portion 6b). ₂ ) Can be loosely inserted, that is, the diameter can be inserted with a margin, and supports the stationary pulley half 6 rotatably (see FIGS. 11 and 12). A plurality of fixing arm portions 11b, 11b,... Are formed radially around the shaft support through hole 11c. The fixing arm 11b has a fixing through hole 11b. ₁ Is formed.
[0042]
Further, on either one of the connecting body A side or the cover body E side, fixed parts 3, 3,... Are formed corresponding to the fixing arm part 11b, and the fixed part 3 has screw holes. 3a is formed. .. Of the surrounding surface member 11 are arranged on the fixed portions 3, 3,... And fixed with bolts, so that the power-side transmission pulley B can be supported and fixed. In FIG. 11, the surrounding surface member 11 is fixed to the connector A side. In FIG. 12, the surrounding surface member 11 is fixed to the cover body E side.
[0043]
Further, in the cover body E, an attachment work hole 26 is formed through the inside and the outside of the cover body E from the formation position of the to-be-inserted support portion 4, and a cap member 27 is formed in the attachment work hole 26. It is mounted (see FIG. 2, FIG. 4, FIG. 5, etc.). The cap member 27 is detachable from the mounting work hole 26, and a screw portion is formed on the outer peripheral side surface of the cap member 27, and an internal screw is also formed in the mounting work hole 26. However, there is a structure in which both are screwed or a cap member 27 is fitted into the mounting hole 26.
[0044]
Further, there is an embodiment in which the cap member 27 is an open / close type on the outer side of the cover body E via a hinge or the like. When the power transmission device of the present invention is mounted on a motorcycle, the cap member 27 is removed from the mounting work hole 26 of the cover body E, a tool is inserted from the mounting work hole 26, and the fixing tool 24 in the housing is attached. The transmission shaft 23 is rotated and connected to the crankshaft 22 (see FIGS. 13 and 14).
[0045]
Next, an assembly method for actually mounting the power transmission device to the motorcycle will be described. First, there are two patterns in the assembling method. The first pattern is a type in which a cover body E is covered with a connecting body A to form a housing, and the reduction gear device F is not attached to the cover body E. In other words, the power-side transmission pulley B and the driven-side transmission pulley C are integrated into a module by a housing including the coupling body A and the cover body E.
[0046]
First, the power transmission device is disposed while being aligned with the engine location of the motorcycle and the tire hub 25 location, the protruding portion of the transmission shaft 23 from the housing is inserted into the transmission bearing portion 22a of the crankshaft 22, and the cover body E A tool is inserted from the mounting hole 26 and the fixing tool 24 is tightened, and the transmission shaft 23 is connected and fixed to the crankshaft 22.
[0047]
Then, after the power transmission device is mounted on the motorcycle, a cap member 27 is mounted in the mounting hole 26. In this pattern, the process is completed in one process on the assumption that the reduction gear device F is mounted on the tire hub 25 (see FIG. 13).
[0048]
Next, the second pattern of the assembling method will be described. In this pattern, the first pattern is covered with a cover body E to form a housing, and a reduction gear device F is mounted on the connecting body A side of the housing. That is, the power-side transmission pulley B, the driven-side transmission pulley C, and the reduction gear device F are integrated into a module in the housing. In this pattern, the power transmission device can be assembled at one place, and the mounting to the two-wheeled vehicle is performed most simply and quickly, and the work process can be minimized (see FIG. 14). .
[0049]
【The invention's effect】
The invention of claim 1 has a hollow portion 23a along the axial direction, a transmission shaft 23 connected to the axial end of the crankshaft 22 along the axial direction, a fixed pulley half 6, and a cylindrical shape on the outer periphery. A movable pulley half 5 having an outer peripheral portion 5d, a ramp plate 7 and a weight roller 8 that bring the movable pulley half 5 close to the fixed pulley half 6 side, are supported by the transmission shaft 23. A power transmission pulley B to be driven, a driven transmission pulley C to which power is transmitted via the power transmission pulley B and the belt 20, and a cylindrical outer peripheral portion 5d of the movable pulley half 5 on the inner surface side 1a. The surrounding wall surface portion 2a that can be inserted and supports the cylindrical outer peripheral portion 5d in an encircling manner, and is positioned at a substantially central position of the surrounding wall surface portion 2a, and from the outer surface side 1b to the inner surface side 1a, The connecting transmission shaft 23 penetrates. A connecting body A having a storage guide portion 2 having a through hole 2b, a transmission shaft 23 fixed to the crankshaft 22 through the hollow portion 23a, and a fixed pulley half 6 attached to the transmission shaft 23. A fixing tool 24 for fixing and a cover body E which covers the inner surface side 1a of the connecting body A and forms the housing of the continuously variable transmission pulley device with the connecting body A. The belt 20 is attached to the housing. In this case, first, the power transmission device is composed of the power-side transmission pulley B, the driven-side transmission pulley C, and the driven-side transmission pulley C. In the state of the structural unit (module), it can be easily and quickly attached to the engine and tires, improving the assembly and improving the productivity not seen in the past, reducing the manufacturing cost To plan Can.
[0050]
More specifically, the housing guide portion 2 for supporting the movable pulley half 5 is formed on the inner surface side 1a of the connecting body A. Therefore, even when the power transmission device is not attached to the two-wheeled vehicle, that is, when the power-side transmission pulley B is not attached to the crankshaft 22, the power-side transmission pulley B is connected to the coupling body A via the storage guide portion 2. It is supported at a predetermined position.
[0051]
Further, the power transmission pulley B is supported by the transmission shaft 23, and the transmission shaft 23 is attached to the crankshaft 22 by the fixing tool 24. Therefore, the connecting body A is connected to the crankshaft 22 and the tire hub. The transmission shaft 23 and the crankshaft 22 are arranged on the side 25, the axial center positions of the transmission shaft 23 and the crankshaft 22 are matched, and the transmission shaft 23 and the crankshaft 22 are connected to the motorcycle only in the axial direction by the fixing tool 24 it can. The above operations can be performed relatively easily, and work efficiency and productivity can be improved.
[0052]
Next, the invention of claim 2 has a hollow portion 23a along the axial direction, the transmission shaft 23 connected to the axial end of the crankshaft 22 along the axial direction, the fixed pulley half 6, and the outer periphery. A movable pulley half 5 having a cylindrical outer peripheral portion 5d formed thereon, a ramp plate 7 and a weight roller 8 for bringing the movable pulley half 5 close to the fixed pulley half 6 side. A power-side transmission pulley B that is axially supported, a driven-side transmission pulley C that transmits power via the power-side transmission pulley B and the belt 20, and a cylindrical outer peripheral portion of the movable pulley half 5 on the inner surface side 1a. 5d can be loosely inserted, and the surrounding wall surface portion 2a that surrounds the cylindrical outer peripheral portion 5d is surrounded, and the crankshaft is positioned from the outer surface side 1b to the inner surface side 1a. From the through hole 2b through which 22 penetrates A connecting body A having a storage guide portion 2 formed, and a transmission shaft 23 fixed to the crankshaft 22 through the hollow portion 23a, and a fixed pulley half 6 fixed to the transmission shaft 23 The fixing member 24 and a cover body E that covers the inner surface 1a of the connecting body A and forms the housing of the continuously variable transmission pulley device with the connecting body A are wrapped around the housing by a belt 20. By using the power transmission device in which the power transmission pulley B and the driven transmission pulley C are mounted, first, the power transmission device is a structural unit of the power transmission pulley B and the driven transmission pulley C first. In a (module) state, it can be easily and quickly attached to the engine and the tire hub 25, and it is possible to improve the assemblability and productivity which are not seen in the past, and to reduce the manufacturing cost. thing It can be.
[0053]
In detail, the cylindrical outer peripheral portion 5 d is formed on the outer periphery of the movable pulley half 5. On the connecting body A side, an accommodation guide portion 2 for supporting the movable pulley half 5 is formed on the inner surface side 1a. The storage guide portion 2 includes an encircling wall surface portion 2a in which the cylindrical outer peripheral portion 5d can be loosely inserted and can support the cylindrical outer peripheral portion 5d in an encircling manner, and a substantially central portion of the enclosing wall surface portion 2a. A through hole 2b for mounting to the crankshaft 22 is formed from the outer surface side 1b to the inner surface side 1a.
[0054]
By inserting the cylindrical outer peripheral portion 5d of the movable pulley half 5 into the surrounding wall surface portion 2a of the storage guide portion 2, the movable pulley half 5 is in a very stable support state by the storage guide portion 2. . Therefore, in a state where the power transmission device is not attached to the motorcycle, that is, in a state where the power side transmission pulley B is not attached to the crankshaft 22, the power side transmission pulley B is connected to the connecting body A via the storage guide portion 2. At a predetermined position, it is supported and fixed as if pivotally supported.
[0055]
That is, the storage guide portion 2 serves to rotatably support the power-side transmission pulley B, and the tilting width of the power-side transmission pulley B in the connecting body A in the axial direction can be minimized. As a result, there is almost no backlash at the center position of the power-side transmission pulley B. Therefore, the axial center position of the power-side transmission pulley B can be maintained at a substantially fixed position, and the transmission shaft 23 can be easily connected to the crankshaft 22.
[0056]
Further, the driven side transmission pulley C can be easily attached to the tire via the reduction gear device F. In this manner, at least the power-side transmission pulley B and the driven-side transmission pulley C are attached to the connecting body A and integrated, so that work efficiency and productivity can be improved.
[0057]
Next, the invention according to claim 3 is the reduction gear device according to claim 1 or 2, which is attached to the outer surface side 1b of the connecting body A of the housing, is connected to the driven transmission pulley C, and can be attached to the tire hub 25. By using the power transmission device provided with F, the power transmission device can be provided with substantially all members for mounting on the crankshaft 22 and the tire hub 25 of the engine. As a result, the number of processes is the smallest, the operation is simple, and the efficiency can be improved.
[0058]
Next, a fourth aspect of the present invention is the boss of the first, second, or third aspect, wherein the power-side transmission pulley B is formed in a protruding shape in the axial direction on the fixed pulley half 6 and the transmission shaft 23 is inserted through the boss. Surface side boss 6b of the portion 6b ₁ The movable pulley half 5 is slidable in the axial direction, and the ramp plate 7 is connected to the front boss 6b of the fixed pulley half 6. ₁ By using the power transmission device fixed to the shaft end, the members constituting the power-side transmission pulley B can be minimized, and the assembly work of the power transmission device can be simplified.
[0059]
Next, a fifth aspect of the invention is the power transmission pulley B according to the first, second, or third aspect, wherein the stationary pulley half 6 is provided with a sleeve member 9 that is a separate member. A fixed pulley half 6 is disposed at the end, the movable pulley half 5 is mounted with the sleeve member 9 slidably in the axial direction, and the ramp plate 7 is fixed to the shaft end of the sleeve member 9. With this power transmission device, the number of constituent members of the power-side transmission pulley B can be extremely reduced as in the effect of the fourth aspect.
[0060]
Next, a sixth aspect of the present invention is directed to the first, second, third, fourth, or fifth aspect, wherein the cover body E includes a back side boss portion 6b of the stationary pulley half 6 of the power side transmission pulley B. ₂ By adopting the power transmission device in which the loosely inserted support portion 4 into which the gear is loosely inserted is formed, the power-side transmission pulley B is in a stable support state in the housing composed of the coupling body A and the cover body E. Can get.
[0061]
In detail, the power transmission pulley B is supported by the storage guide portion 2 on the side of the movable pulley half 5 in the housing, and the stationary pulley half 6 is supported by the driven insertion support portion 4 in the housing. As a result, both axial ends of the power-side transmission pulley B are pivotally supported by the storage guide portion 2 and the loosely inserted support portion 4. Therefore, the power-side transmission pulley B is secured in a more stable support state in the housing.
[0062]
Next, the invention of claim 7 has a hollow portion 23a along the axial direction, the transmission shaft 23 connected to the axial end of the crankshaft 22 along the axial direction, the fixed pulley half 6, and the movable A power-side transmission pulley B comprising a pulley half 5, a ramp plate 7 and a weight roller 8 for bringing the movable pulley half 5 close to the fixed pulley half 6, and supported by the transmission shaft 23. A driven side transmission pulley C that transmits power via the power side transmission pulley B and the belt 20, and the movable pulley half 5 can be loosely inserted into the inner surface 1a. A storage guide portion comprising a surrounding wall surface portion 2a that is supported in a surrounding shape, and a through hole 2b that is positioned substantially at the center of the surrounding wall surface portion 2a and through which the crankshaft 22 passes from the outer surface side 1b to the inner surface side 1a. A connector A having 2; The transmission shaft 23 is fixed to the crankshaft 22 by being inserted into the portion 23a, the fixing tool 24 for fixing the fixed pulley half 6 to the transmission shaft 23, and the fixed pulley half 6 side being rotatable. The power transmission pulley B is connected to the connecting body A by including a power transmission pulley B and a driven transmission pulley C mounted on the connecting body A. A is mounted in a stable support state.
[0063]
In detail, the power-side transmission pulley B is supported by the storage guide portion 2 on the movable pulley half 5 side, and the stationary pulley half 6 is supported by the surrounding surface member 11 as a result. Both ends of the transmission pulley B in the axial direction are in a state of being supported by the storage guide portion 2 and the surrounding surface member 11. Therefore, the power-side transmission pulley B is secured in a more stable support state in the connecting body A.
[0064]
Next, the invention of claim 8 comprises the cover body E according to claim 7, which covers the inner surface side 1a of the connecting body A and forms the housing of the continuously variable transmission pulley device with the connecting body A. By using the power transmission device in which the power-side transmission pulley B is mounted in the housing via the surrounding surface member 11, the power-side transmission pulley B is disposed in the connecting body A as in the case of claim 7. A more stable support state is ensured.
[0065]
Next, the invention of claim 9 includes a transmission shaft 23 having a hollow portion 23a along the axial direction, connected to the axial end of the crankshaft 22 along the axial direction, a fixed pulley half 6, and an outer periphery. A movable pulley half 5 having a cylindrical outer peripheral portion 5d formed thereon, and a ramp plate 7 and a weight roller 8 that bring the movable pulley half 5 close to the fixed pulley half 6 side. A power transmission pulley B that is pivotally supported, a driven transmission pulley C that transmits power via the power transmission pulley B and the belt 20, and a cylindrical outer peripheral portion 5d of the movable pulley half 5 on the inner surface 1a. Is surrounded by a wall surface portion 2a that surrounds the cylindrical outer peripheral portion 5d, and the crankshaft 22 is positioned from the outer surface side 1b to the inner surface side 1a. The through hole 2b through which the A connecting body A having a storage guide portion 2, and a fixing member for fixing the transmission shaft 23 to the crankshaft 22 through the hollow portion 23 a and fixing the fixed pulley half 6 to the transmission shaft 23. And a cover body E that covers the inner surface 1a of the coupling body A and forms the housing of the continuously variable transmission pulley device with the coupling body A. The coupling body A includes a power transmission pulley B and A driven transmission pulley C is arranged, the movable pulley half 5 is stored in the storage guide 2, the cover body E is mounted on the connecting body A, and the transmission shaft is mounted on the power transmission pulley B. 23 is connected to the crankshaft 22 in the axial direction, and fixed to the crankshaft 22 by a fixing tool 24, and the driven transmission pulley C is connected to a reduction gear device F mounted on the tire hub 25 side. Assembling method and As a result, the coupling body A and the cover body E constitute a housing, which is substantially integrated into a module, so that it can be made efficient including processes such as transporting it to another factory. .
[0066]
Next, a tenth aspect of the present invention is the power transmission device according to the ninth aspect, wherein the connecting body A is mounted on the tire hub 25 side with the reduction gear device F mounted on the driven transmission pulley C side. As a result of the assembly method described above, it is possible to mount the two-wheeled vehicle in the simplest and quickest manner by modularizing the housing with the reduction gear device F mounted on the housing by the connecting body A and the cover body E. .
[Brief description of the drawings]
FIG. 1 is a sectional view of the present invention.
FIG. 2 is a cross-sectional view of a main part in a state where a crankshaft is inserted into a power transmission pulley mounted in a housing.
FIG. 3 is a sectional view showing a state in which a connecting body, a cover body, and a reduction gear device are separated in the present invention.
FIG. 4 is a cross-sectional view of the main part in a state where the crankshaft is removed from the power transmission pulley side of the present invention.
FIG. 5 is a cross-sectional view showing a state in which a connecting body, a power-side transmission pulley, and a support member are separated.
FIG. 6 is a cross-sectional view of the movable pulley half, the fixed pulley half, the ramp plate, the transmission shaft, and the fixing tool separated from each other.
FIG. 7A is a cross-sectional view of another embodiment of the present invention in which a power-side transmission pulley is mounted.
(B) is a sectional view of a power-side transmission pulley of an embodiment different from (A).
8A is a cross-sectional view of a power-side transmission pulley according to another embodiment different from FIG.
(B) is a sectional view of a power-side transmission pulley of an embodiment different from (A).
FIG. 9 is a sectional view of a second embodiment of the present invention.
FIG. 10A is a cross-sectional view in which a power-side transmission pulley of another example is mounted on the second embodiment.
(B) is sectional drawing which attached the power side transmission pulley of the Example different from (A) to 2nd Embodiment.
FIG. 11 is a cross-sectional view of an embodiment in which a stationary pulley half of a power-side transmission pulley is pivotally supported on a coupling body via an encircling surface member.
FIG. 12 is a cross-sectional view of an embodiment in which a fixed pulley half of a power-side transmission pulley is pivotally supported on a cover body via an enclosure surface member.
FIG. 13 is a schematic diagram showing the steps of the first pattern of the assembling method.
FIG. 14 is a schematic diagram showing the steps of the second pattern of the assembling method.
FIG. 15A is a perspective view showing a state in which the power-side transmission pulley is separated from the storage guide portion;
(B) is a partially rear view showing the movable pulley half, the ramp plate, and the weight roller.
(C) is a sectional view of the main part showing the operation of the lamp plate and the weight roller.
FIG. 16 is a schematic diagram of a conventional process.
[Explanation of symbols]
A ... Connected body
B ... Power-side transmission pulley
C: Driven side pulley
E ... Cover body
F ... Reduction gear device
1a ... Inner surface side
1b ... outer surface side
2a ... Surrounding wall
2b ... through hole
4 ... Free insertion support
5 ... Moveable pulley half
5d ... Cylindrical outer periphery
6 ... Half of fixed pulley
6b ... Boss
6b ₁ ... Front side boss
6b ₂ ... Back side boss
7 ... Lamp plate
8 ... Weight roller
9 ... Sleeve member
11 ... Surrounding surface member
20 ... Belt
22 ... Crankshaft
23 ... Transmission shaft
24. Fixing tool
25. Tire hub

Claims

A transmission shaft having a hollow portion along the axial direction, connected to the axial end of the crankshaft along the axial direction, a fixed pulley half, and a movable pulley half having a cylindrical outer periphery formed on the outer periphery; A power-side transmission pulley comprising a ramp plate and a weight roller that brings the movable pulley half close to the fixed pulley half, and is supported by the transmission shaft, and is powered via the power-side transmission pulley and the belt. A driven transmission pulley, a cylindrical wall portion of the movable pulley half that can be loosely inserted into the inner surface side, and a cylindrical wall surface portion that surrounds the cylindrical outer wall portion; A coupling body having a storage guide portion that is located at a substantially central location and has a through hole through which a transmission shaft connected to the crankshaft passes from the outer surface side to the inner surface side, and the crankshaft inserted through the hollow portion Secure the transmission shaft to , And a fixing tool for fixing the fixed pulley half to the transmission shaft, and a cover body that covers the inner surface side of the connecting body and constitutes the housing of the continuously variable pulley apparatus with the connecting body, A power transmission device comprising a power-side transmission pulley and a driven-side transmission pulley wound around the housing by a belt.

A transmission shaft having a hollow portion along the axial direction, connected to the axial end of the crankshaft along the axial direction, a fixed pulley half, and a movable pulley half having a cylindrical outer periphery formed on the outer periphery; A power-side transmission pulley comprising a ramp plate and a weight roller that bring the movable pulley half close to the fixed pulley half, and is supported by the transmission shaft, and power is transmitted via the power-side transmission pulley and the belt. A driven transmission pulley, a cylindrical wall portion of the movable pulley half that can be loosely inserted into the inner surface side, and a cylindrical wall surface portion that surrounds the cylindrical outer wall portion; A coupling body having a storage guide portion that is located at a substantially central location and includes a through-hole through which the crankshaft penetrates from the outer surface side to the inner surface side, and the transmission shaft is fixed to the crankshaft through the hollow portion. And the transmission And a cover body that covers the inner surface side of the connecting body and constitutes the housing of the continuously variable transmission pulley device, and the belt is attached to the housing. A power transmission device comprising a power transmission pulley and a driven transmission pulley wound around each other.

3. The power transmission device according to claim 1, further comprising a reduction gear device that is attached to an outer surface side of the connecting body of the housing, is connected to the driven transmission pulley, and is attachable to a tire hub.

4. The power-side speed change pulley according to claim 1, wherein the power-side speed change pulley is formed so as to protrude in the axial direction of the fixed pulley half, and the movable pulley half is formed on a boss portion on a surface side of the boss portion through which the transmission shaft is inserted. A power transmission device characterized in that the lamp plate is slidable in an axial direction, and the lamp plate is fixed to a shaft end of a surface side boss portion of the fixed pulley half.

4. The power transmission pulley according to claim 1, wherein the power-side speed change pulley is provided with a sleeve member that is a separate member from the fixed pulley half, and the fixed pulley half is disposed at the shaft end of the sleeve member. A power transmission device, wherein a body has the sleeve member slidably mounted in an axial direction, and the lamp plate is fixed to a shaft end of the sleeve member.

In Claim 1, 2, 3, 4, or 5, The said cover body is formed with the to-be-inserted support part in which the back side boss | hub part of the stationary pulley half of the said power side transmission pulley is loosely inserted. A power transmission device.

A transmission shaft having a hollow portion along the axial direction and connected to the axial end of the crankshaft along the axial direction, a fixed pulley half, a movable pulley half, and the movable pulley half connected to the fixed pulley A power-side transmission pulley that is composed of a ramp plate and a weight roller that are brought close to the half body side, and is supported by the transmission shaft; a driven-side transmission pulley that transmits power through the power-side transmission pulley and the belt; The movable pulley half side can be loosely inserted into the inner surface side, and the surrounding wall surface portion that supports the movable pulley half body in an encircling manner is located at a substantially central position of the surrounding wall surface portion. A connecting body having a storage guide portion composed of a through-hole through which the crankshaft passes, a transmission shaft fixed to the crankshaft through the hollow portion, and a fixed pulley half fixed to the transmission shaft Fastening for If consists of a surrounding surface member for rotatably supporting the fixed pulley half body side, a power transmission apparatus characterized by a power-side variable speed pulley and the driven gear pulley is mounted on the coupling body.

8. The power transmission according to claim 7, further comprising: a cover body that covers an inner surface side of the coupling body and forms a housing of the continuously variable transmission pulley device with the coupling body, and the enclosure surface member is provided in the housing. A power transmission device comprising a pulley.

A transmission shaft having a hollow portion along the axial direction, connected to the axial end of the crankshaft along the axial direction, a fixed pulley half, and a movable pulley half having a cylindrical outer periphery formed on the outer periphery; The movable pulley half is composed of a ramp plate and a weight roller for bringing the movable pulley half close to the fixed pulley half, and is powered by the power-side transmission pulley supported by the transmission shaft, the power-side transmission pulley and the belt. A driven transmission pulley, a cylindrical wall portion of the movable pulley half that can be loosely inserted on the inner surface side, and a cylindrical wall surface portion that surrounds the cylindrical outer wall portion; A coupling body having a storage guide portion, which is located at the center and includes a through-hole through which the crankshaft penetrates from the outer surface side to the inner surface side, and the transmission shaft is fixed to the crankshaft through the hollow portion. And the transmission shaft A fixing tool for fixing the fixed pulley half, and a cover body that covers the inner surface side of the connecting body and forms a housing of the continuously variable transmission pulley device with the connecting body. A transmission pulley and a driven transmission pulley are arranged, a movable pulley half is stored in the storage guide portion, a cover body is mounted on the coupling body, and a transmission shaft mounted on the power transmission pulley is connected to a crankshaft. The driven transmission pulley is connected to a reduction gear device mounted on the tire hub side, and the power transmission device is assembled.

10. The method of assembling a power transmission device according to claim 9, wherein the connecting body is attached to a tire hub side in a state where a reduction gear device is attached to a driven side transmission pulley.