201103818 六、發明說明： 【發明所屬之技術領域】 本發明是關於油電混合式跨騎型車輛，車體框架具備 有：將用來軸支承前輪的前叉及轉向車把可轉向地予以支 承的頭管、從該頭管朝斜後下方延伸的主框架、從下方支 承讓乘客乘坐的乘車用座墊且從上述主框架的後部朝斜後 上方延伸的左右的一對座墊框架；在車體框架搭載著動力 單元，該動力單元包含有：引擎及可發揮用來驅動後輪的 動力的驅動馬達，該動力單元配置於上述主框架的下方， 儲存有對上述引擎供給的燃料的油箱，配設於上述兩座墊 框架之間。 【先前技術】 在專利文獻1及專利文獻2等已知的油電混合式機車 ，可從引擎及電動馬達的兩個系統，對後輪施加驅動力。 [先前技術文獻] ^ [專利文獻] [專利文獻1] 曰本特開2007- 022 1 48號公報 [專利文獻2] 日本特開2007 — 008349號公報 【發明內容】 -5- 201103818 [發明欲解決的課題] 在該機車等的油電混合式的跨騎型車輛，用來將燃料 供給到引擎的油箱、及用來驅動電動馬達的動力驅動單元 是必要的，充塡有燃料的狀態的油箱及動力驅動單元的重 量較大，需要有良好的重量平衡性來進行搭載，而在專利 文獻1，雖然揭示有將用來驅動電動馬達的動力驅動單元 配置在乘車用座墊的下方，而並沒有明顯揭示油箱的配置 方式，在專利文獻2，雖然揭示有將油箱配置在··於乘車 用座墊的下方處配置的收納箱的後方且在上述乘車用座墊 的下方，可是並沒有明顯揭示動力驅動單元的配置方式。 並且由於動力驅動單元會發熱，所以也必須考慮要有效地 將動力驅動單元冷卻，也需要考慮如何配置油箱及動力驅 動單元。 本發明鑑於該情形，其目的是要提供一種油電混合式 跨騎型車輛，能將動力驅動單元有效地加以冷卻，並且配 置有動力驅動單元及油箱而重量平衡性良好。 [用以解決課題的手段] 爲了達成上述目的，本發明第1特徵爲：本發明的油 電混合式跨騎型車輛，車體框架具備有：將用來軸支承前 輪的前叉及轉向車把可轉向地予以支承的頭管、從該頭管 朝斜後下方延伸的主框架、從下方支承讓乘客乘坐的乘車 用座墊且從上述主框架的後部朝斜後上方延伸的左右的一 對座墊框架；在車體框架搭載著動力單元，該動力單元包 201103818 含有：引擎及可發揮用來驅動後輪的動 動力單元配置於上述主框架的下方，儲 給的燃料的油箱，配設於上述兩座墊框 配置於上述兩座墊框架的後部之間，用 達的動力驅動單元，配置成，從俯視方 分在上述兩座墊框架之間，從側面觀察 :在上述乘車用座墊的下方，且在從前 上述動力驅動單元的座墊外殼的前部， 流朝上述動力驅動單元側導引的開口部 本發明，除了上述第1特徵之外， 述動力驅動單元的表面，突出設置有： 隔而朝前後方向延伸的複數的冷卻葉片 本發明，除了上述第1或2特徵之 在上下方向隔著間隔配置並且朝車寬方 述開口部，設置於上述座墊外殼的前部 緣朝前方延伸的複數的葉片，連設於上 本發明，除了上述第1、2或3特 爲：朝向配置有上述驅動馬達的方向而 元延伸出的高壓配線，連接於上述驅動 本發明，除了上述第1、2、3或4 徵爲：連結於上述車體框架用來支承上 支架，配置成：在該動力驅動單元的前 在該支架的上端部，設置有：可轉動地 墊的鉸鏈。 力的驅動馬達，該 存有對上述引擎供 架之間；上述油箱 來驅動上述驅動馬 向觀察其至少一部 在上述油箱的前方 方及左右兩側覆蓋 設置有：將行駛氣 〇 第2特徵爲：在上 在車寬方向隔著間 〇 外，第3特徵爲： 向延伸的複數的上 ，從各開口部的上 述座墊外殻。 徵之外，第4特徵 從上述動力驅動單 馬達。 特徵之外，第5特 述動力驅動單元的 方而朝上下延伸， 支承上述乘車用座 201103818 本發明’除了上述第丨、2、3、4或5特徵之外，第 6特徵爲：在上述動力驅動單元的下方且在左右的一對上 述座墊框架之間，配置有低電壓電池。 本發明，除了上述第1、2、3、4、5或6特徵之外， 第7特徵爲：上述動力驅動單元收容固定於外殼內，該外 殼與上述動力驅動單元之間形成有：使來自上述開口部的 行駛氣流流通的風路，該外殼被上述車體框架支承。 [發明效果] 藉由本發明的第1特徵，在用來支承乘車用座墊且車 體框架所具備的左右的一對座墊框架的後部之間，配置油 箱，動力驅動單元配置成：其至少一部分從俯視方向觀察 在兩座墊框架之間，從側面觀察在油箱的前方，所以能夠 讓重量平衡性良好地配置油箱及動力驅動單元，並且在乘 車用座墊的下方且在從前方及左右兩側覆蓋動力驅動單元 的座墊外殼的前部，設置有開口部，將來自該開口部的行 駛氣流朝動力驅動單元側導引，所以能有效地冷卻動力驅 動單元。 藉由本發明的第2特徵，在動力驅動單元的表面突出 設置有：在車寬方向隔著間隔而朝前後方向延伸的複數的 冷卻葉片，所以藉由各冷卻葉片可以提高動力驅動單元的 冷卻效率，並且藉由各冷卻葉片將來自前方的行駛氣流予 以整流，所以能更提高冷卻效果。 藉由本發明的第3特徵，在上下方向隔著間隔配置並 -8- 201103818 且朝車寬方向延伸的複數的開口部，是設置於座墊外殼的 前部，所以容易讓行駛氣流接觸動力驅動單元全體，能夠 更提高冷卻效果，並且從各開口部的上緣朝前方延伸的複 數的葉片連設於座墊外殼，所以以各葉片將行駛氣流整流 且能夠防止雨水等進入到座墊外殼內。 藉由本發明的第4特徵，連接於驅動馬達的高壓配線 ，朝向配置有驅動馬達的方向而從上述動力驅動單元延伸 出，所以可讓配線、電力輸送更有效率化。 藉由本發明的第5特徵，在連結於車體框架而用來支 承動力驅動單元且配置成在動力驅動單元的前方朝上下延 伸的支架的上端部，設置有：可轉動地支承乘車用座墊的 鉸鏈，所以能以共通的支架來支承動力驅動單元及乘車用 座墊，而能有助於減少零件數量。 藉由本發明的第6特徵，低電壓電池配置在動力驅動 單元的下方且在兩座墊框架之間，除了動力驅動單元及油 箱之外，藉由將重量物也就是低電壓電池配置在車寬方向 中央部，則能更提高重量平衡性。 藉由本發明的第7特徵，在被車體框架支承的外殼內 收容固定著動力驅動單元，在外殼及動力驅動單元之間， 形成有：讓來自開口部的行駛氣流流通的風路，所以能夠 更提升對動力驅動單元的冷卻效率。 【實施方式】 以下，針對本發明的實施方式，參考第1圖〜第8圖 -9 - 201103818 來說明，首先在第1圖，油電混合式跨騎型車輛的油電混 合式機車的車體框架F，具備有：可轉向地支承前叉15 的頭管1 6、從該頭管1 6朝斜後下方延伸的主框架I 7、從 主框架1 7的後端朝下方延伸的左右的一對樞支板1 8…、 在該樞支板1 8…的連設部更前方，與上述主框架1 7的後 部連設而朝斜後上方延伸的左右的一對座墊框架1 9…、 以及將上述兩樞支板1 8…的中間部及上述座墊框架1 9… 的中間部之間予以連結的副框架20…；在上述前叉1 5的 下端軸支承著前輪WF，在前叉1 5的上部連結著桿狀的轉 向車把2 1。 在上述車體框架F，將引擎E的引擎主體22搭載成 :在上述主框架17的下方且讓氣缸軸線朝稍斜前上方， 是以：該引擎E、內建於上述引擎主體22的變速機T( 參考第2圖）、與附設於引擎主體22的驅動馬達Μ，來 構成動力單元Ρ。 在上述車體框架F的樞支板18···，隔介著支軸24而 可擺動地支承著搖臂23的前端部，在該搖臂23的後端部 軸支承著後輪WR的車軸25。在車體框架F的座墊框架 1 9…的後部及上述搖臂2 3的後部之間設置有左右的一對 後避震單元2 6…。 構成上述引擎主體22的一部分的曲軸箱27，是將左 右的殼體半體27L、27R結合所構成，在該曲軸箱27的 後部，可自由旋轉地支承著輸出軸28，來自動力單元Ρ 的動力，隔介著在上述輸出軸28及上述後輪WR的車軸 -10- 201103818 25之間設置的鏈條式傳動手段29而傳達到後輪WR° 在構成一部分引擎主體22的氣缸頭3 0的下部側壁’ 連接著排氣裝置31，該排氣裝置31’是具備有：從上述 氣缸頭30的下部側壁通過引擎主體22的下方而朝後方延 伸的排氣管32、以及配置在後輪WR的右側而連接於上 述排氣管32的排氣滅音器33。 一同參考第2圖及第3圖，在上述氣缸頭30的上部 側壁連接著進氣裝置34，該進氣裝置34’是具備有：配 置在上述氣缸頭30的斜前上方且被上述主框架17支承的 空氣濾清器35、具有進氣通路38而與上述空氣濾清器35 連接的油門體36、以及將該油門體36及氣缸頭30的上 部側壁之間予以連結的進氣管3 7。 再一同參考第4圖及第5圖，上述油門體36，是以 讓車寬方向的車體中心線CL橫切過油門體36的方式， 配置於車寬方向的中央部，在該油門體36，軸支承著用 來將上述進氣通路38開閉的油門閥39的閥軸40，並且 附設有：將燃料噴射到較油門閥39更下游側的進氣通路 3 8的燃料噴射閥4 1。 上述油門閥39，是以致動器42所開閉驅動，該致動 器42 ’具備有：具有與包含上述車體中心線CL的鉛直面 正交的軸線而配置在油門體36的後方的電動馬達43、以 及中介設置在該電動馬達43及上述閥軸40之間的減速齒 輪機構44;減速齒輪機構44,收容於：配置在較上述車 體中心線CL更左側.的致動器殼體45。致動器42全體， 201103818 配置成在車寬方向靠近左側。 在第1圖，在上述後輪WR的上方且上述兩座墊框架 19…的後部之間，配置有：對上述引擎E也就是燃料噴射 閥41供給燃料的油箱46，該油箱46的上方，可開閉地 覆蓋著例如雙人型的乘車用座墊47。 在車體框架F安裝有合成樹脂製的車體外殼48,該 車體外殻48將該車體框架F、上述引擎主體22的一部分 、上述進氣裝置34、及上述油箱46予以覆蓋，該車體外 殼48的一部分也就是座墊外殼49，從前方及左右兩側將 上述乘車用座墊47的下方予以覆蓋，形成爲具有朝後方 開啓的大致U字型的橫剖面形狀，上述油箱46也被座墊 外殼49所覆蓋。 參考第2圖，在引擎主體22的曲軸箱27，可自由旋 轉地支承著：具有沿著車寬方向的軸線的曲軸5 1，以固 定在該曲軸51的左端部的轉子53、及固定在發電機外殼 55的定子54來構成發電機（ACG) 52，上述發電機外殼 55結合於曲軸箱27的左箱體半體27L。在曲軸箱27的右 箱體半體27R結合著曲軸箱外殼56，在該曲軸箱外殼56 結合著離合器外殼5 7。 在上述曲軸箱外殼56內且在上述曲軸51，可相對自 由旋轉地支承著：一次驅動齒輪58、與圍繞曲軸51的筒 軸59，在曲軸箱外殼56及離合器外殼57內所收容的二 段離心離合器60，中介安裝於上述曲軸51及上述筒軸59 之間。 -12- 201103818 上述二段離心離合器60，在曲軸51的轉數小於第一 預定轉數的狀態，則不將曲軸5〗的旋轉動力傳達到上述 筒軸59，若曲軸51的轉數達到第一預定轉數的話，則將 曲軸51的旋轉動力一邊減速一邊傳達到上述筒軸59，並 且若曲軸51的轉數達到較第一預定轉數更大的第二預定 轉數的話，則不將曲軸5 1的旋轉動力減速而傳達到上述 筒軸59。 在上述曲軸箱外殼56，一體地設置有馬達支承部56a ’該馬達支承軸56a位於上述引擎主體22的氣缸體50的 右側方’具有與曲軸51的平行的軸線的驅動馬達Μ的馬 達殼體61，其一部分伸入於上述馬達支承部56a內而鎖 裝於馬達支承部56a。也就是說驅動馬達Μ，是配置在車 體框架F的寬度方向右側，而安裝於曲軸箱外殻56的馬 達支承部56a。 於驅動馬達Μ的旋轉軸62處固定的驅動齒輪63，以 與上述一次驅動齒輪58 —起旋轉的方式，與固定於一次 驅動齒輪58的被動齒輪64嚙合，在該被動齒輪64及上 述筒軸59之間，中介安裝有：當筒軸59的轉數大於上述 被動齒輪64的轉數時，從筒軸59將動力傳達到上述被動 齒輪64及一次驅動齒輪58側的單向離合器65。 上述變速機Τ’收容在曲軸箱27內，而在上述輸出 軸28、與具有與該輸出軸28及上述曲軸51平行的軸線 的輸入軸66之間’設置有：可擇一性地確定的複數例如 兩段的齒輪列Gl、G2。並且在傳動構件67是隔介著阻尼 -13- 201103818 橡膠68而連結支承著一次被動齒輪69'傳動構件67是 不能相對旋轉地結合於上述輸入軸66 ; —次被動齒輪69 嚙合於一次驅動齒輪58。而在具有與上述輸出軸28平行 的軸線而被上述曲軸箱27所支承的軸部110，可自由旋 轉地支承著：與上述輸出軸28的旋轉連動而旋轉的齒輪 1 Π，用來檢測該齒輪m的轉數的轉數感應器1 1 2是安 裝於曲軸箱27的右箱體半體27R。 在該動力單元P，能夠用以下的兩條傳達路線，將動 力朝後輪WR側傳達。 第一傳達路線，是將引擎E的動力傳達到後輪WR的 路線，曲軸5 1的旋轉動力，是經由：二段離心離合器60 、筒軸59、單向離合器65、被動齒輪64及一次驅動齒輪 58、一次被動齒輪69、阻尼橡膠68、傳動構件67、變速 機T及鏈條式傳動手段29，而傳達到後輪WR。此時，可 以分別在二段離心離合器60及變速機T，來進行二階段 的變速。當在以第一傳達路線的動力傳達所進行的行駛時 ，藉由使驅動馬達Μ作動而可以進行動力輔助，而使用 驅動馬達Μ也可以進行再生充電。 第二傳達路線，是將驅動馬達Μ的動力傳達到後輪 WR的路線，驅動馬達Μ的動力，是經由：驅動齒輪63 、被動齒輪64及一次驅動齒輪58、一次被動齒輪69、阻 尼橡膠68、傳動構件67、變速機Τ及鏈條式傳動手段29 ，而傳達到後輪WR。此時驅動馬達Μ的動力，藉由單向 離合器65的空轉而不會傳達到曲軸51側，在以該第二傳 -14 - 201103818 達路線的動力傳達所進行的行駿中，能以變速機T進行二 階段的變速。 第一及第二傳達路線的切換，是藉由單向離合器65 所進行’如果筒軸59的轉數大於被動齒輪64的轉數的話 ，則進行第一傳達路線的動力傳達，如果被動齒輪64的 轉數大於筒軸5 9的轉數的話，則進行第二傳達路線的動 力傳達。 在第6圖及第7圖，上述驅動馬達Μ是藉由動力驅 動單元70所驅動，該動力驅動單元70，其至少一部分（ 在該實施方式是大部分）從俯視方向觀察是在一對座墊框 架1 9、1 9之間，且從側面觀察，是配置在：上述油箱46 的前方且在乘車用座墊47的前部及座墊框架19之間，配 置在車寬方向中央部而被車體框架F所支承。並且藉由上 述車體外殼48的座墊外殼49從前方及左右兩側覆蓋動力 驅動單元70 » 在轉向車把21的右端部可轉動地安裝著油門柄（沒 有圖示），乘坐者操作油門柄的操作量是以加速位置感應 器7 1檢測出，而用來將上述油門閥3 9開閉驅動的致動器 42的電動馬達43，因應於油門位置感應器7 1的檢測値而 藉由油門驅動器72而被作動。加速位置感應器71及油門 驅動器72，安裝在：較上述動力驅動單元7〇更前方處且 在車體框架F的主框架1 7的後部左側。也就是加速位置 感應器7 1及油門驅動器7 2，配置於車體框架F的左側。 動力驅動單元70，收容、固定於動力驅動單元殼體 -15- 201103818 74，該動力驅動單元殼體74是以車體框架F所支承。 一同參考第8圖，動力驅動單元殼體74，是以：具 有朝上方開放的大致U字型的橫剖面形狀而配置在兩座 墊框架19、19之間的下殼體75、具有朝下方開放的大致 U字型的橫剖面形狀而配置在下殻體75的上方的上殼體 76、以及將下殼體75及上殻體76之間連結的中間殼體 77所構成；下殻體75及中間殼體77被焊接，上殼體76 的下部從上方嵌合於中間殻體77的上部。並且從中間殻 體7 7的後部左右朝後方突出的一對支承腕部7 7 a、7 7 a、 從上殼體76的後部左右朝後方突出的一對支承腕部76a 、76a，是相互間中介著圓筒狀的隔墊78、78而以螺栓 79、 79鎖裝。在中間殻體77的前部，設置有：將其前部 左右兩側之間連結而朝前方突出的限制壁7 7 b 在該動力驅動單元殼體74內，前後開放的上收容室 80、 前後開放並且上部與上收容室80相連的下收容室81 ，形成爲：下收容室81的寬度小於上收容室80的寬度。 動力驅動單元70，是以上述限制壁77b限制其前端而收 容固定於上收容室80內，在動力驅動單元70的表面、與 動力驅動單元70的內面之間，形成有使空氣流通的風路 82。並且在動力驅動單元70的表面之中的下部表面，朝 前後方向延伸地設置有在車寬方向隔著間隔的複數的冷卻 葉片 83、83···。 在車體框架F的兩座墊框架19…的前部之間設置有 橫向構件84，在上述動力驅動單元殼體74、及收容固定 •16- 201103818 於該動力驅動單元殼體74的動力驅動單元70的前方且朝 上下延伸的支架8 5的下端部，在沿著車寬方向的上述橫 向構件84的中央部，以在與該橫向構件84之間中介著安 裝橡膠86的方式，而藉由螺栓87所固定。 上述支架85的上端部，經由鉸鏈銷89而連結於：在 上述動力驅動單元殼體74的上殼體76的前部上面處設置 的托架88，上述鉸鏈銷89的兩端固定在鉸鏈構件90，上 述鉸鏈構件90與上述托架88及上述鉸鏈銷89 —起構成 鉸鏈機構91。鉸鏈構件90是安裝在乘車用座墊47的前 端底部，乘車用座墊47，可轉動地被鉸鏈機構91所支承 ，該鉸鏈機構91朝向上述支架85的上端部。 在上述兩座墊框架19…的中間部設置有托架92···， 從動力驅動單元殼體74的中間殼體77的後部左右朝後方 突出的一對支承腕部7 7a、7 7a的後端，是在與上述托架 92…之間中介有安裝橡膠93…而藉由螺栓94…所固定。 在動力驅動單元殼體74的上收容室80所收容固定的 動力驅動單元70，從其沿著車寬方向的右側前部下端起 ，延伸出高壓配線95，該高壓配線90’通過車體框架F 的車寬方向右側而連接於驅動馬達Μ。 在從前方及左右兩側將動力驅動單元殻體74及動力 驅動單元70覆蓋的座墊外殻49的前部，上下隔著間隔地 設置有朝車寬方向延伸的複數的開口部96、96··· ’而在 座墊外殼49，一體地連設有：從各開口部96、96…的上 緣朝前方Μ伸的複.數的葉片97、· 97···。 -17- 201103818 在動力驅動單元殻體74的下收容室81，作成配置在 動力驅動單元70的下方且在左右的一對座墊框架19、19 之間的方式，收容固定有鉛蓄電池也就是低電壓電池98 。另一方面，Li離子電池也就是高電壓電池99，如第1 圖所示，配置在後輪WR的左側，收容固定於電池殼體 100內，電池殼體100被座墊框架19所支承。 接著針對該實施方式的作用來說明，用來儲存對引擎 E供給的燃料的油箱46，是配置在：車體框架F之中用來 支承乘車用座墊47的左右的一對座墊框架19…的後部之 間，將驅動馬達Μ驅動的動力驅動單元70，其至少一部 分（在該實施方式是大部分）配置在：從俯視方向觀察在 一對座墊框架1 9、1 9之間，並且從側面觀察在上述油箱 46前方且在乘車用座墊47的前部及座墊框架19之間， 在乘車用座墊47的下方，且從前方及左右兩側來覆蓋動 力驅動單元70的座墊外殼49的前部，設置有：將行駛氣 流朝向動力驅動單元70側導引的開口部96、96···，所以 能達到良好重量平衡地配置油箱46及動力驅動單元70， 並且由於來自在座墊外殼49的前部處設置的開口部96、 96…的行駛氣流會被朝動力驅動單元70側導引，所以能 有效地冷卻動力驅動單元70。 複數的上述開口部96、96…是在上下方向隔著間隔 配置，並且朝車寬方向延伸，而設置在座墊外殼49的前 部，所以容易讓行駛氣流接觸到動力驅動單元70全體， 而可提高冷卻效果。並且從各開口部96、96···的上緣朝 -18- 201103818 前方延伸的複數的葉片97、97…是連設於座墊外殼49, 能夠以各葉片9 7 ' 9 7…將行駛氣流整流且能防止雨水等 進入到座墊外殼49內。 在動力驅動單元70的下部表面，將在車寬方向隔著 間隔的複數的冷卻葉片8 3、8 3…突出設置成朝前後方向 延伸，所以藉由各冷卻葉片83、83…可以提高動力驅動 單元70的冷卻效率，並且藉由各冷卻葉片83、83…將來 自前方的行駛氣流予以整流，所以能更提高冷卻效果。 與車體框架F的主框架17連結而支承動力驅動單元 7〇的支架85，配置成在動力驅動單元70的前方而朝上下 延伸，在該支架85的上端部，設置有：可轉動地支承乘 車用座墊47的鉸鏈機構91，所以是以共通的支架85來 支承動力驅動單元70及乘車用座墊47，而能有助於減少 零件數量。 在動力驅動單元70的下方且在左右的一對座墊框架 1 9之間，配置低電壓電池9 8，所以低電壓電池9 8是配置 在動力驅動單元70的下方且在兩座墊框架19…之間，除 了動力驅動單元70及油箱46之外，藉由將重量物也就是 低電壓電池98配置在車寬方向中央部，則能更提高重量 平衡性。 動力驅動單元70收容固定於動力驅動單元殼體74內 ，而該動力驅動單元殼體74與動力驅動單元70之間形成 有：使來自上述開口部96、96…的行駛氣流流通的風路 82’該動力驅動單元殼體74被車體框架ρ所支承，所以 -19- 201103818 可謀求對動力驅動單元70的更好的冷卻效率。 用來將在引擎E具備的進氣裝置34處設置的油門閥 3 9進行開閉驅動的致動器42，因應於檢測出乘坐者的油 門操作量的加速位置感應器7 1的檢測値，藉由油門驅動 器72而被作動，而在車體框架F的寬度方向右側配置有 驅動馬達Μ，相對的，將致動器42、加速位置感應器71 及油門驅動器72配置在車體框架F的寬度方向左側，所 以可減少驅動馬達Μ的磁場造成的雜訊對致動器42、加 速位置感應器71及油門驅動器72造成的影響。 用來將驅動馬達Μ驅動的動力驅動單元70，配置於 車寬方向中央而被車體框架F支承，而在上述車寬方向右 側從動力驅動單元70延伸出去且朝向配置驅動馬達Μ的 方向而配置在車寬方向右側的高壓配線95，連接於驅動 馬達Μ，所以可謀求配線、電力輸送的高效率化，並且可 以避免來自高壓配線的雜訊影響到加速位置感應器7 1及 油門驅動器7 2。 以上說明了本發明的實施例，本發明並不被上述實施 例所限定，只要不脫離申請專利範圍記載的本發明，則可 進行各種設計上的變更。 【圖式簡單說明】 第1圖是機車的局部缺口左側視圖。 第2圖是動力單元的橫剖俯視圖。 第3圖是從右前方觀察動力單元的立體圖。 -20- 201103818 第4圖是從與第2圖相同方向來觀察油門體及致動器 的俯視圖。 第5圖是從第4圖的箭頭5觀察的側視圖。 第6圖是車體中央部附近的縱剖左側視圖。 第7圖是第6圖的7— 7線剖面圖。 第8圖是顯示動力驅動單元殼體的立體圖。 【主要元件符號說明】 15 :前叉 1 6 :頭管 1 7 :主框架 19 :座墊框架 21 :轉向車把 46 :油箱 47 :乘車用座墊 49 :座墊外殼 7〇 :動力驅動單元 74:動力驅動單元殼體 82 :風路 8 3 :冷卻葉片 85 :支架 9 1 :鉸鏈機構 95 :高壓配線 96 :開口部 -21 - 201103818 97 :葉片 9 8 :低電壓電池 E :引擎 F :車體框架 Μ :驅動馬達 Ρ :動力單元 WF :前輪 WR :後輪BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hybrid electric straddle type vehicle having a body frame that steerably supports a front fork and a steering handle for pivotally supporting a front wheel. a head pipe, a main frame extending obliquely from the head pipe to the lower rear, a left and right pair of seat cushion frames supporting a passenger seat cushion for passengers from below and extending obliquely rearward and upward from a rear portion of the main frame; A power unit is mounted on the vehicle body frame, and the power unit includes an engine and a drive motor that can generate power for driving the rear wheel. The power unit is disposed below the main frame and stores fuel supplied to the engine. The oil tank is disposed between the two mat frames. [Prior Art] In the conventional hybrid electric locomotives such as Patent Document 1 and Patent Document 2, a driving force can be applied to the rear wheels from two systems of an engine and an electric motor. [Prior Art] [Patent Document] [Patent Document 1] JP-A-2007-022 1 48 [Patent Document 2] JP-A-2007-008349A SUMMARY OF THE INVENTION - 5 - 201103818 [Invention Problem to be solved: In a hybrid electric straddle type vehicle such as a locomotive, a fuel tank for supplying fuel to the engine and a power drive unit for driving the electric motor are necessary, and the fuel is charged. The fuel tank and the power drive unit have a large weight and need to be mounted with good weight balance. However, in Patent Document 1, it is disclosed that a power drive unit for driving an electric motor is disposed below a passenger seat cushion. However, Patent Document 2 discloses that the fuel tank is disposed behind the storage box disposed below the passenger seat cushion and below the passenger seat cushion. However, the configuration of the power drive unit is not clearly disclosed. And since the power drive unit generates heat, it must also be considered to effectively cool the power drive unit, and it is also necessary to consider how to configure the fuel tank and the power drive unit. SUMMARY OF THE INVENTION The present invention has been made in view of the circumstances, and an object thereof is to provide a hybrid electric straddle type vehicle capable of effectively cooling a power driving unit and having a power driving unit and a fuel tank with good weight balance. [Means for Solving the Problems] In order to achieve the above object, a first aspect of the present invention provides a hybrid electric straddle type vehicle according to the present invention, wherein the vehicle body frame includes a front fork and a steering wheel for supporting the front wheels a head pipe that is steerably supported, a main frame that extends obliquely rearward and downward from the head pipe, a seat cushion that supports passengers from below, and a left and right extending obliquely rearward and upward from a rear portion of the main frame a pair of cushion frame; a power unit is mounted on the body frame, and the power unit package 201103818 includes an engine and a fuel tank that can be used to drive the rear wheel and is disposed below the main frame to store fuel. The two pad frames are disposed between the rear portions of the two pad frames, and the power driving unit is disposed so as to be viewed from the side view between the two pad frames, as viewed from the side: In the lower part of the seat cushion of the vehicle, and the opening portion of the front side of the seat cushion casing of the power drive unit, which is directed toward the power drive unit side, the present invention, in addition to the first feature described above, The surface of the power driving unit is provided with a plurality of cooling fins extending in the front-rear direction. The present invention is provided in the first and second features in the vertical direction and at intervals in the vehicle width. The plurality of blades extending from the front edge of the seat shell toward the front are connected to the present invention, and the first, second or third portions are high-voltage wires extending in a direction in which the drive motor is disposed. In connection with the above driving, the first, second, third or fourth aspect is characterized in that: the vehicle body frame is coupled to support the upper bracket, and is disposed at the upper end of the bracket at the front of the power driving unit. There are: hinges for the rotating floor mat. The driving motor of the force is stored between the engine and the engine; the fuel tank is driven to drive the motor to observe at least one of the front and the left and right sides of the fuel tank; The third feature is: in the upper direction of the vehicle width direction, the third feature is: the above-mentioned seat cushion outer casing of each of the openings. In addition to the levy, the fourth feature drives a single motor from the above power. In addition to the features, the fifth aspect of the power drive unit extends upward and downward to support the above-described riding seat 201103818. In addition to the above-described third, third, fourth or fifth feature, the sixth feature is: A low voltage battery is disposed below the power drive unit and between the pair of left and right seat cushion frames. According to the present invention, in addition to the above-mentioned features 1, 2, 3, 4, 5 or 6, the seventh feature is that the power driving unit is housed and fixed in the outer casing, and the outer casing and the power driving unit are formed between: The air passage through which the traveling airflow of the opening portion flows is supported by the vehicle body frame. According to the first aspect of the present invention, a fuel tank is disposed between the rear portions of the pair of left and right seat cushion frames provided for supporting the passenger seat cushion and the vehicle body frame, and the power drive unit is disposed such that At least a part of the cushion frame is viewed between the two cushion frames in the plan view, and is viewed from the side in front of the fuel tank. Therefore, the fuel tank and the power drive unit can be disposed with good weight balance, and below the passenger seat cushion and from the front. The front portion of the seat cushion casing covering the left and right sides of the power driving unit is provided with an opening portion for guiding the traveling airflow from the opening portion toward the power driving unit side, so that the power driving unit can be effectively cooled. According to the second aspect of the present invention, a plurality of cooling blades extending in the front-rear direction at intervals in the vehicle width direction are protruded from the surface of the power driving unit, so that the cooling efficiency of the power driving unit can be improved by the respective cooling blades. Moreover, the traveling airflow from the front is rectified by the respective cooling blades, so that the cooling effect can be further improved. According to the third aspect of the present invention, the plurality of openings that are arranged in the vertical direction at intervals of -8 to 201103818 and extend in the vehicle width direction are provided in the front portion of the seat cushion casing, so that the traveling airflow is easily contacted with the power drive. The entire unit can further improve the cooling effect, and a plurality of blades extending forward from the upper edge of each opening are connected to the seat cushion casing. Therefore, the blades are used to rectify the traveling airflow and prevent rainwater or the like from entering the seat cushion casing. . According to the fourth aspect of the present invention, the high-voltage wiring connected to the drive motor is extended from the power drive unit in a direction in which the drive motor is disposed. Therefore, wiring and power transmission can be made more efficient. According to a fifth aspect of the present invention, the upper end portion of the bracket that is coupled to the vehicle body frame and supports the power driving unit and that is disposed to extend vertically in front of the power driving unit is provided to rotatably support the passenger seat The hinge of the pad can support the power drive unit and the seat cushion with a common bracket, which can help reduce the number of parts. According to the sixth feature of the present invention, the low voltage battery is disposed under the power driving unit and between the two pad frames, except for the power driving unit and the oil tank, by arranging the weight, that is, the low voltage battery, in the vehicle width In the center of the direction, the weight balance can be further improved. According to the seventh aspect of the present invention, the power drive unit is housed and fixed in the outer casing supported by the vehicle body frame, and an air passage for allowing the traveling airflow from the opening to flow is formed between the outer casing and the power drive unit. It also improves the cooling efficiency of the power drive unit. [Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to Figs. 1 to 8 - 9 - 201103818. First, in Fig. 1, a hybrid electric locomotive of a hybrid electric straddle type vehicle The body frame F includes a head pipe 16 that steerably supports the front fork 15, a main frame I7 that extends obliquely rearward and downward from the head pipe 16, and a left and right extending downward from the rear end of the main frame 17. a pair of pivotal plates 1 8 ..., a pair of right and left cushion frame 1 that is connected to the rear portion of the main frame 17 and that extends obliquely rearward and upward in front of the connecting portion of the pivotal plates 18 9... and a sub-frame 20 that connects the intermediate portion between the two pivot plates 1 8 and the intermediate portion of the cushion frame 19, ...; the front wheel WF is pivotally supported at the lower end of the front fork 15 A rod-shaped steering handlebar 2 1 is coupled to the upper portion of the front fork 15 . In the vehicle body frame F, the engine main body 22 of the engine E is mounted such that the engine E and the shifting of the engine main body 22 are provided below the main frame 17 and the cylinder axis is slightly inclined upward and upward. The machine T (refer to FIG. 2) and the drive motor 附 attached to the engine main body 22 constitute a power unit Ρ. The pivotal plate 18 of the vehicle body frame F is pivotally supported by the distal end portion of the rocker arm 23 via the support shaft 24, and the rear wheel WR is axially supported at the rear end portion of the rocker arm 23. Axle 25. A pair of left and right rear suspension units 206 are disposed between the rear portion of the cushion frame 19 of the body frame F and the rear portion of the rocker arm 23. The crankcase 27 constituting a part of the engine main body 22 is configured by coupling left and right casing halves 27L and 27R, and the output shaft 28 is rotatably supported at the rear portion of the crankcase 27, and is derived from the power unit Ρ. The power is transmitted to the rear wheel WR° via a chain transmission means 29 provided between the output shaft 28 and the axle -10-201103818 25 of the rear wheel WR, and constitutes a part of the cylinder head 30 of the engine main body 22. The lower side wall ′ is connected to an exhaust unit 31 ′, which is provided with an exhaust pipe 32 extending rearward from the lower side wall of the cylinder head 30 through the lower side of the engine main body 22, and a rear wheel WR. The right side is connected to the exhaust muffler 33 of the exhaust pipe 32 described above. Referring to FIGS. 2 and 3 together, an intake device 34 is connected to the upper side wall of the cylinder head 30, and the intake device 34' is provided on the upper front side of the cylinder head 30 and is provided by the main frame. a supported air cleaner 35, a throttle body 36 having an intake passage 38 connected to the air cleaner 35, and an intake pipe 3 connecting the throttle body 36 and an upper side wall of the cylinder head 30. 7. Referring to FIGS. 4 and 5 together, the throttle body 36 is disposed at a center portion in the vehicle width direction so that the center line CL of the vehicle body in the vehicle width direction crosses the throttle body 36. 36. The shaft supports a valve shaft 40 of a throttle valve 39 for opening and closing the above-described intake passage 38, and is attached with a fuel injection valve 4 that injects fuel into an intake passage 38 on the downstream side of the throttle valve 39. . The throttle valve 39 is driven by an actuator 42 that is provided with an electric motor that is disposed behind the throttle body 36 with an axis orthogonal to a vertical plane including the vehicle body center line CL. 43. A reduction gear mechanism 44 interposed between the electric motor 43 and the valve shaft 40; and a reduction gear mechanism 44 housed in an actuator housing 45 disposed on the left side of the vehicle body center line CL. . The actuator 42 as a whole, 201103818 is arranged to be close to the left side in the vehicle width direction. In the first embodiment, a fuel tank 46 for supplying fuel to the engine E, that is, the fuel injection valve 41, is disposed above the rear wheel WR and between the rear portions of the two seat cushion frames 19, and above the oil tank 46, The seat cushion 47 for a double type, for example, can be opened and closed. A vehicle body casing 48 made of synthetic resin is attached to the vehicle body frame F, and the vehicle body casing 48 covers the vehicle body frame F, a part of the engine main body 22, the air intake device 34, and the oil tank 46. A part of the body casing 48, that is, the seat cushion casing 49, covers the lower side of the passenger seat cushion 47 from the front side and the left and right sides, and has a substantially U-shaped cross-sectional shape that opens rearward, and the fuel tank is formed. 46 is also covered by the seat cushion 49. Referring to Fig. 2, the crankcase 27 of the engine main body 22 is rotatably supported by a crankshaft 51 having an axis along the vehicle width direction, a rotor 53 fixed to the left end portion of the crankshaft 51, and fixed to The stator 54 of the generator casing 55 constitutes a generator (ACG) 52 that is coupled to the left tank half 27L of the crankcase 27. The crankcase casing 56 is coupled to the right casing half 27R of the crankcase 27, and the clutch casing 56 is coupled to the crankcase casing 56. In the crankcase casing 56, the crankshaft 51 is rotatably supported by a primary drive gear 58 and a cylinder shaft 59 surrounding the crankshaft 51, and two segments housed in the crankcase casing 56 and the clutch casing 57. The centrifugal clutch 60 is interposed between the crankshaft 51 and the cylinder shaft 59. -12-201103818 When the number of revolutions of the crankshaft 51 is less than the first predetermined number of revolutions, the two-stage centrifugal clutch 60 does not transmit the rotational power of the crankshaft 5 to the cylinder shaft 59, and if the number of revolutions of the crankshaft 51 reaches the When the predetermined number of revolutions is reached, the rotational power of the crankshaft 51 is transmitted to the cylinder shaft 59 while decelerating, and if the number of revolutions of the crankshaft 51 reaches a second predetermined number of revolutions greater than the first predetermined number of revolutions, The rotational power of the crankshaft 51 is decelerated and transmitted to the above-described cylindrical shaft 59. The crankcase casing 56 is integrally provided with a motor support portion 56a. The motor support shaft 56a is located on the right side of the cylinder block 50 of the engine body 22, and a motor housing having a drive motor 平行 that is parallel to the axis of the crankshaft 51. 61. A part of the motor 61 is inserted into the motor support portion 56a and locked to the motor support portion 56a. That is, the drive motor 是 is disposed on the right side in the width direction of the vehicle body frame F, and is attached to the motor support portion 56a of the crankcase casing 56. A drive gear 63 fixed to a rotary shaft 62 of the drive motor 啮合 is meshed with the primary drive gear 58 to mesh with a driven gear 64 fixed to the primary drive gear 58 at the driven gear 64 and the above-mentioned cylindrical shaft Between 59, when the number of revolutions of the cylinder shaft 59 is larger than the number of revolutions of the driven gear 64, the power is transmitted from the cylinder shaft 59 to the one-way clutch 65 on the side of the driven gear 64 and the primary drive gear 58. The transmission Τ' is housed in the crankcase 27, and is provided between the output shaft 28 and the input shaft 66 having an axis parallel to the output shaft 28 and the crankshaft 51. For example, two-stage gear trains G1, G2. And the transmission member 67 is coupled to the primary driven gear 69 by a damping of the rubber - 68 - 201103818 rubber 68. The transmission member 67 is coupled to the input shaft 66 in a rotationally fixed manner; the secondary driven gear 69 is engaged with the primary drive gear. 58. The shaft portion 110 supported by the crankcase 27 having an axis parallel to the output shaft 28 is rotatably supported by a gear 1 旋转 that rotates in conjunction with the rotation of the output shaft 28 to detect the shaft portion 110. The number-of-revolutions sensor 1 1 2 of the number of revolutions of the gear m is a right-box half body 27R attached to the crankcase 27. In the power unit P, the following two communication routes can be used to transmit the power to the rear wheel WR side. The first conveying route is a route for transmitting the power of the engine E to the rear wheel WR. The rotational power of the crankshaft 51 is via the two-stage centrifugal clutch 60, the cylinder shaft 59, the one-way clutch 65, the driven gear 64, and the primary drive. The gear 58, the primary driven gear 69, the damping rubber 68, the transmission member 67, the transmission T, and the chain transmission means 29 are transmitted to the rear wheel WR. At this time, two-stage shifting can be performed in the two-stage centrifugal clutch 60 and the shifting machine T, respectively. When traveling by the power transmission of the first communication route, power assist can be performed by operating the drive motor, and regenerative charging can be performed using the drive motor. The second communication route is a route for transmitting the power of the driving motor to the rear wheel WR, and the driving force of the motor is via the driving gear 63, the driven gear 64 and the primary driving gear 58, the primary driven gear 69, and the damping rubber 68. The transmission member 67, the transmission Τ and the chain transmission means 29 are transmitted to the rear wheel WR. At this time, the power for driving the motor Μ is not transmitted to the side of the crankshaft 51 by the idling of the one-way clutch 65, and the shift can be performed in the continuation of the power transmission by the second pass-14-201103818 The machine T performs two-stage shifting. The switching of the first and second communication routes is performed by the one-way clutch 65. If the number of revolutions of the cylinder shaft 59 is greater than the number of revolutions of the driven gear 64, the power transmission of the first communication route is performed, if the driven gear 64 When the number of revolutions is greater than the number of revolutions of the cylinder shaft 59, the power transmission of the second communication route is performed. In FIGS. 6 and 7, the drive motor Μ is driven by a power drive unit 70, at least a part of which (in this embodiment is mostly) viewed from a top view in a pair of seats Between the mat frames 1 9 and 19, and viewed from the side, they are disposed in front of the oil tank 46 and are disposed between the front portion of the passenger seat cushion 47 and the cushion frame 19, and are disposed at the center portion in the vehicle width direction. It is supported by the body frame F. And the power drive unit 70 is covered from the front and left and right sides by the seat shell 49 of the vehicle body casing 48. The throttle handle (not shown) is rotatably mounted at the right end of the steering handlebar 21, and the occupant operates the throttle The operation amount of the shank is detected by the acceleration position sensor 71, and the electric motor 43 for driving the actuator 42 of the above-described throttle valve 39 is opened and closed in response to the detection of the throttle position sensor 71. The throttle actuator 72 is actuated. The acceleration position sensor 71 and the throttle actuator 72 are mounted on the left side of the rear portion of the main frame 17 of the vehicle body frame F in front of the power drive unit 7A. That is, the acceleration position sensor 71 and the throttle actuator 7 2 are disposed on the left side of the vehicle body frame F. The power drive unit 70 is housed and fixed to the power drive unit housing -15-201103818 74. The power drive unit housing 74 is supported by the vehicle body frame F. Referring to Fig. 8, the power drive unit casing 74 is a lower casing 75 having a substantially U-shaped cross-sectional shape that is open upward and disposed between the two cushion frames 19 and 19, and has a downward direction. The upper casing 76 disposed above the lower casing 75 and the intermediate casing 77 connecting the lower casing 75 and the upper casing 76 are formed in an open U-shaped cross-sectional shape; the lower casing 75 is formed. The intermediate case 77 is welded, and the lower portion of the upper case 76 is fitted to the upper portion of the intermediate case 77 from above. And a pair of support arm portions 7 7 a, 7 7 a projecting left and right from the rear portion of the intermediate casing 7 7 and a pair of support arm portions 76 a and 76 a projecting rearward from the rear portion of the upper casing 76 to the rear are mutual The cylindrical spacers 78 and 78 are interposed therebetween and locked by bolts 79 and 79. In the front portion of the intermediate casing 77, a restriction wall 7 7b that connects the left and right sides of the front portion and protrudes forward is provided. In the power drive unit casing 74, the upper storage chamber 80 is opened forward and backward. The lower housing chamber 81, which is open at the front and the rear and is connected to the upper housing chamber 80, is formed such that the width of the lower housing chamber 81 is smaller than the width of the upper housing chamber 80. The power drive unit 70 is housed and fixed in the upper housing chamber 80 by the restriction wall 77b, and a wind is formed between the surface of the power driving unit 70 and the inner surface of the power driving unit 70. Road 82. Further, on the lower surface of the surface of the power driving unit 70, a plurality of cooling blades 83, 83, ... spaced apart in the vehicle width direction are provided in the front-rear direction. A cross member 84 is disposed between the front portions of the two cushion frames 19 of the body frame F, and the power drive unit housing 74 and the power drive unit of the power drive unit housing 74 are housed and fixed. The lower end portion of the bracket 85 that extends forward and upward of the unit 70, in the center portion of the cross member 84 along the vehicle width direction, is borrowed by interposing the rubber 86 between the cross member 84 and the cross member 84. It is fixed by bolts 87. The upper end portion of the bracket 85 is coupled to a bracket 88 provided on the upper surface of the upper casing 76 of the power driving unit casing 74 via a hinge pin 89, and both ends of the hinge pin 89 are fixed to the hinge member. 90. The hinge member 90 constitutes a hinge mechanism 91 together with the bracket 88 and the hinge pin 89. The hinge member 90 is attached to the front end of the seat cushion 47, and the seat cushion 47 is rotatably supported by the hinge mechanism 91, and the hinge mechanism 91 faces the upper end portion of the bracket 85. A bracket 92 is provided in an intermediate portion of the two seat cushion frames 19, and a pair of support wrist portions 7 7a, 7 7a projecting rearward from the rear portion of the intermediate casing 77 of the power drive unit casing 74 toward the rear. At the rear end, a mounting rubber 93 is interposed between the brackets 92 and the brackets 92, and is fixed by bolts 94. The power drive unit 70 housed and fixed in the upper housing chamber 80 of the power drive unit casing 74 extends from the lower right front end portion in the vehicle width direction, and the high voltage wiring 95 extends through the vehicle body frame. F is connected to the drive motor 右侧 on the right side of the vehicle width direction. The front portion of the seat cushion casing 49 that covers the power driving unit casing 74 and the power driving unit 70 from the front and the left and right sides is provided with a plurality of openings 96 and 96 extending in the vehicle width direction at intervals. In the seat cushion casing 49, a plurality of blades 97, 97, ... extending from the upper edge of each of the openings 96, 96, ... are integrally provided. -17-201103818 The lower storage chamber 81 of the power drive unit casing 74 is disposed between the pair of right and left seat cushion frames 19 and 19 under the power drive unit 70, and the lead storage battery is housed and fixed. Low voltage battery 98. On the other hand, the Li-ion battery, that is, the high-voltage battery 99, is disposed on the left side of the rear wheel WR as shown in Fig. 1, and is housed and fixed in the battery case 100, and the battery case 100 is supported by the seat frame 19. Next, the operation of this embodiment will explain that the oil tank 46 for storing the fuel supplied to the engine E is a pair of left and right seat cushion frames disposed in the vehicle body frame F for supporting the passenger seat cushion 47. Between the rear portions of 19..., the motor drive unit 70 that drives the motor , is driven, at least a portion (most of which is in this embodiment) is disposed between a pair of seat cushion frames 19 and 19 as viewed from a plan view. And viewed from the side in front of the oil tank 46 and between the front portion of the passenger seat cushion 47 and the seat cushion frame 19, under the passenger seat cushion 47, and covering the power drive from the front and the left and right sides The front portion of the seat cushion casing 49 of the unit 70 is provided with openings 96, 96, ... for guiding the traveling airflow toward the power driving unit 70 side, so that the oil tank 46 and the power driving unit 70 can be arranged with good weight balance. And since the traveling airflow from the opening portions 96, 96, ... provided at the front portion of the seat cushion casing 49 is guided toward the power driving unit 70 side, the power driving unit 70 can be effectively cooled. The plurality of openings 96, 96, ... are arranged at intervals in the vertical direction and extend in the vehicle width direction, and are provided in the front portion of the seat cushion casing 49. Therefore, it is easy for the traveling airflow to contact the entire power driving unit 70. Can improve the cooling effect. Further, a plurality of blades 97, 97, ... extending from the upper edge of each of the openings 96, 96, ..., toward the front of -18 - 201103818 are connected to the seat cushion casing 49, and can be driven by the blades 9 7 ' 9 7 ... The airflow rectifies and prevents rainwater or the like from entering the seat cushion casing 49. On the lower surface of the power driving unit 70, a plurality of cooling blades 836, 83, ... spaced apart in the vehicle width direction are protruded so as to extend in the front-rear direction, so that the power driving can be improved by the cooling blades 83, 83... The cooling efficiency of the unit 70 and the traveling airflow from the front are rectified by the respective cooling blades 83, 83..., so that the cooling effect can be further improved. A bracket 85 that is coupled to the main frame 17 of the vehicle body frame F and supports the power driving unit 7A is disposed to extend vertically in front of the power driving unit 70. The upper end portion of the bracket 85 is provided to be rotatably supported. Since the hinge mechanism 91 of the seat cushion 47 is mounted, the power drive unit 70 and the passenger seat cushion 47 are supported by the common bracket 85, which contributes to a reduction in the number of parts. A low voltage battery 9 is disposed below the power driving unit 70 and between the pair of left and right seat cushion frames 19, so the low voltage battery 98 is disposed below the power driving unit 70 and in the two seat frame 19 In addition to the power drive unit 70 and the oil tank 46, by arranging the weight, that is, the low-voltage battery 98, in the center portion in the vehicle width direction, the weight balance can be further improved. The power drive unit 70 is housed and fixed in the power drive unit casing 74, and an air passage 82 that circulates the traveling airflow from the openings 96, 96, ... is formed between the power drive unit casing 74 and the power drive unit 70. The power drive unit casing 74 is supported by the vehicle body frame ρ, so that -19-201103818 can achieve better cooling efficiency for the power drive unit 70. The actuator 42 for opening and closing the throttle valve 39 provided in the intake device 34 provided in the engine E is used to detect the acceleration position sensor 7 1 of the accelerator operation amount of the occupant. The throttle actuator 72 is actuated, and a drive motor 配置 is disposed on the right side in the width direction of the vehicle body frame F. In contrast, the actuator 42, the acceleration position sensor 71, and the throttle actuator 72 are disposed on the width of the vehicle body frame F. The direction is to the left, so that the influence of the noise caused by the magnetic field of the drive motor 对 on the actuator 42, the acceleration position sensor 71, and the throttle actuator 72 can be reduced. The power drive unit 70 for driving the drive motor 配置 is disposed at the center in the vehicle width direction and supported by the vehicle body frame F, and extends from the power drive unit 70 on the right side in the vehicle width direction toward the direction in which the drive motor 配置 is disposed. Since the high-voltage wiring 95 disposed on the right side in the vehicle width direction is connected to the drive motor Μ, wiring and power transmission can be improved, and noise from the high-voltage wiring can be prevented from affecting the acceleration position sensor 7 1 and the throttle driver 7 . 2. The embodiments of the present invention have been described above, and the present invention is not limited to the above embodiments, and various design changes can be made without departing from the invention described in the claims. [Simple description of the drawing] Figure 1 is a left side view of the partial notch of the locomotive. Figure 2 is a cross-sectional plan view of the power unit. Fig. 3 is a perspective view of the power unit viewed from the right front side. -20- 201103818 Fig. 4 is a plan view of the throttle body and the actuator viewed from the same direction as Fig. 2. Fig. 5 is a side view as seen from arrow 5 of Fig. 4. Fig. 6 is a longitudinal sectional left side view of the vicinity of the center portion of the vehicle body. Fig. 7 is a sectional view taken along line 7-7 of Fig. 6. Figure 8 is a perspective view showing the power drive unit housing. [Main component symbol description] 15 : Front fork 1 6 : Head tube 1 7 : Main frame 19 : Seat frame 21 : Steering handlebar 46 : Fuel tank 47 : Seat cushion 49 : Seat cover 7 〇 : Power drive Unit 74: Power Drive Unit Housing 82: Air Path 8 3: Cooling Blade 85: Bracket 9 1 : Hinge Mechanism 95: High Voltage Wiring 96: Opening 21 - 201103818 97: Blade 9 8 : Low Voltage Battery E: Engine F : Body frame Μ : Drive motor Ρ : Power unit WF : Front wheel WR : Rear wheel