1240041 玖、發明說明： 【發明所屬之技術領域】 本發明係關於將收容大部分曲柄軸的曲柄軸室、及配置 於上述曲柄軸的後方側的儲油室，相互區隔而形成於曲柄 軸箱内，且將使上述曲柄軸室側的機油返回上述儲油室的 回流泵安裝於曲柄軸箱的自動二、三輪車用引擎，尤其是 關於機油循環構造的改良。 【先前技術】 在曲柄軸室及儲油室間配置回流泵於曲柄軸箱的自動 二輪車用引擎，已如專利文獻1等廣為所知。 (專利文獻1) 日本專利特開2 0 0 2 - 2 1 5 2 2號公報 【發明内容】 (發明所欲解決之問題） 但是在自動二輪車用引擎中，為確保最低離地距，有抑 制曲柄軸箱向下方的突出的必要，另外，因為在曲柄軸箱 的後方配置有後輪，故也有避免曲柄軸箱向後方側突出的 必要，因此在上述習知構成中，難以充分確保儲油室的容 積。 本發明係鑑於上述情況，目的在於提供一種可避免曲柄 軸箱向下方及後方突出，並充分確保儲油室的容積的自動 二、三輪車用引擎之機油循環構造。 (解決問題之手段） 為達成上述目的，申請專利範圍第1項之發明，係在將 51240041 发明 Description of the invention: [Technical field to which the invention belongs] The present invention relates to a crankshaft chamber in which most of the crankshaft is housed, and an oil storage chamber arranged on the rear side of the crankshaft is separated from each other to form the crankshaft. In the tank, a return pump that returns the oil on the crankshaft chamber side to the oil storage chamber is mounted on the engine for the two- or three-wheeled vehicle of the crankcase, and in particular, it relates to improvement of the oil circulation structure. [Prior Art] An engine for a two-wheeled vehicle in which a return pump is disposed between a crankshaft chamber and an oil storage chamber in a crankshaft box is widely known as Patent Document 1. (Patent Document 1) Japanese Patent Laid-Open No. 2 0 2-2 1 5 2 2 [Summary of the Invention] (Problems to be Solved by the Invention) However, in a motorcycle engine, there is a suppression to ensure a minimum ground clearance. It is necessary for the crank case to protrude downward, and because a rear wheel is arranged behind the crank case, it is also necessary to prevent the crank case from protruding to the rear side. Therefore, in the conventional configuration, it is difficult to ensure sufficient oil storage. The volume of the chamber. The present invention has been made in view of the above circumstances, and an object thereof is to provide an oil circulation structure of an automatic two- or three-wheeled vehicle engine that can prevent the crank shaft case from protruding downward and rearward and sufficiently ensure the volume of the oil storage chamber. (Means for Solving the Problem) In order to achieve the above-mentioned purpose, the invention for applying for the first item of the patent
312/發明說明書(補件)/93-03/93100124 1240041 大圖，圖8為從圖3的8 - 8線箭頭方向所見曲柄軸箱的剖 面圖，圖9為圖5的主要部位放大圖。 首先，圖1中，在自動二輪車的車體框架11，搭載有配 置於前輪WF及後輪WR間的動力單元P，該動力單元P係 由引擎E、及設於該引擎E及後輪WR的車轴1 8間的動力 傳動裝置T所構成。 一併參照圖2至圖6，屬V型2氣筒的上述引擎E的引 擎本體1 3具備：可旋轉自如地支承具有沿車體框架1 1的 左右方向延伸的軸線的曲柄軸1 2的曲柄軸箱1 4 ;配置為 向前方斜上方展開的V形，且結合於上述曲柄軸箱1 4的前 部及後部氣缸體1 5 F、1 5 R ;分別結合於各氣缸體1 5 F、1 5 R 的前部及後部氣缸蓋1 6 F、1 6 R ;及在與上述前部及後部氣 缸體1 5 F、1 5 R的相反側結合於前部及後部氣缸蓋1 6 F、1 6 R 的前部及後部氣缸蓋罩1 7 F、1 7 R。 曲柄軸箱1 4係由在朝向自動二輪車的行進方向前方時 配置於左側的左側箱半體1 9 ;及在朝向自動二輪車的行進 方向前方時配置於右側的右側箱半體2 0相互結合而構 成，兩個箱半體1 9、2 0係由配置於引擎中心C上的結合面 2 1相互結合。 曲柄軸1 2的一端部係貫穿設於左側箱半體1 9的左側曲 柄軸頸部2 2而由該曲柄軸頸部2 2支承為可旋轉自如，曲 柄軸1 2的另一端部係貫穿設於右側箱半體2 0的右側曲柄 軸頸部2 3而由該曲柄軸頸部2 3支承為可旋轉自如。 曲柄軸1 2具有配置於左側曲柄軸頸部2 2内側的第1曲 8 312/發明說明書(補件)/93-03/93100124 1240041 柄錘2 4、及配置於右側曲柄軸頸部2 3内側的第2曲柄錘 2 5，另外，連設於可滑動地嵌合於前部氣缸體1 5 F所設的 搪缸機2 6 F的活塞2 7 F的連桿2 8 F的大端部，及連設於可 滑動地嵌合於後部氣缸體1 5 R所設的搪缸機2 6 R的活塞 2 7 R的連桿2 8 R的大端部，係可轉動地連結於聯繫第1及 第2曲柄錘2 4、2 5間而設於曲柄軸1 2的曲柄銷2 9。 但是，後部氣缸體1 5 R係配置為從前部氣缸體1 5 F偏向 沿著曲柄軸1 2的軸線的一端側，上述兩連桿2 8 F、2 8 R的 大端部，係以前部氣缸體1 5 F側的連桿2 8 F靠近配置於第 2曲柄錘2 5，同時，後部氣缸體1 5 R側的連桿2 8 R靠近配 置於第1曲柄錘24的方式，在第1及第2曲柄錘24、25 間連結於曲柄銷2 9。而且，上述引擎中心C係在兩連桿 2 8 F、2 8 R間成為沿著自動二輪車的前後方向之形態。 在從左側曲柄軸頸部2 2突出的曲柄軸1 2的一端部，安 裝著發電機3 0，該發電機3 0係由固定於曲柄軸1 2 —端部 的轉子31、及收容於該轉子31内的定子32所構成。該發 電機3 0係由結合於曲柄軸箱1 4的左側箱半體1 9的左引擎 蓋33所覆蓋，上述定子32係固定於左引擎蓋33。 在左側曲柄軸頸部2 2及發電機3 0間配置著同軸圍繞曲 柄軸1 2的從動齒輪3 5，該從動齒輪3 5係透過單向離合器 3 4連結於發電機3 0的轉子3 1。另外，具有與曲柄軸1 2 平行的旋轉軸線的起動馬達3 6，係以位於前部及後部氣缸 體1 5 F、1 5 R間的方式支持在曲柄軸箱1 4的上部，在該起 動馬達3 6的輸出軸設有驅動小齒輪3 7。另一方面，在曲 9 312/發明說明書(補件)/93-03/93100124 1240041 柄軸箱1 4的左側箱半體1 9及上述左引擎蓋3 3間，一體地 形成的第1及第2中間齒輪38、39和第3中間齒輪40被 支承為可繞與曲柄軸1 2平行的軸線旋轉，上述驅動小齒輪 3 7係嚙合於較該驅動小齒輪3 7大徑的第1中間齒輪3 8， 較第1中間齒輪3 8小徑的第2中間齒輪3 9，係嚙合於較 第2中間齒輪3 9大徑而嚙合於從動齒輪3 5的第3中間齒 輪40。 因此，在引擎E的起動時，藉由使起動馬達36作動， 來自起動馬達3 6的驅動力被減速而傳遞給曲柄軸1 2，另 外，在引擎E的起動後，藉由單向離合器34的動作，來自 曲柄軸1 2的動力未被傳遞給起動馬達3 6側。 在從右側曲柄軸頸部2 3突出的曲柄軸1 2的另一端部， 固接著一體成形的一對驅動鏈輪4 4 F、4 4 R，在一驅動鏈輪 4 4 F繞掛著用以驅動配設於上述前部氣缸蓋1 6 F的動閥裝 置4 5 F的凸輪鏈條4 6 F，在另一驅動鏈輪4 4 R繞掛著用以 驅動配設於後部氣缸蓋1 6 R的動閥裝置4 5 R的凸輪鏈條 4 6 R。而且，覆蓋曲柄軸1 2的另一端部的右引擎蓋4 7，係 結合於曲柄軸箱1 4的右側箱半體2 0。 再次，於圖1中，配置於引擎E的前方斜上方的空氣淨 化器4 8係搭載於車體框架11上，同時，配置於空氣淨化 器4 8上方的燃料箱4 9係搭載於車體框架1 1上，在前部及 後部氣缸蓋1 6 F、1 6 R，則透過個別的吸氣管5 0 F、5 0 R連 接著上述空氣淨化器4 8。另外，引導從前部及後部氣缸蓋 1 6 F、1 6 R排出的排氣的排氣管5 1 F、5 1 R，係共通地連接於 10 312/發明說明書(補件)/93-03/93100124 1240041 配置於後輪W R的右側的排氣消音器5 2。 動力傳動裝置T具備自動且無段地將從曲柄軸1 2輸出 的動力予以變速的皮帶式無段變速機5 3 ;使該皮帶式無段 變速機5 3的輸出減速的減速齒輪組5 4 ;及設於減速齒輪 組5 4及後輪W R的車軸1 8間的鏈式傳動機構5 5。 該動力傳動裝置T具備的變速箱5 6，包括：一體設於曲 柄軸箱1 4的左側及右側箱半體1 9、2 0，且前部配置於向 後方延伸的箱支持部1 4 a的右側，同時，後部配置於後輪 W R的左側而向前後延伸的箱主體5 7 ;以覆蓋該箱主體5 7 的前半部右側的方式結合於箱主體5 7的右側箱5 8 ;及以 覆蓋箱主體5 7的後半部左側的方式結合於箱主體5 7的左 側箱5 9者，而箱主體5 7的前部係固定結合於曲柄軸箱1 4 的箱支持部1 4 a。 在箱主體5 7的前半部及右側箱5 8間形成有變速機室 6 0，而在箱主體5 7的後半部及左側箱5 9間則形成有齒輪 室6 1。 皮帶式無段變速機5 3係收納於變速機室6 0内者，其具 備：在與曲柄軸1 2的軸線垂直的平面内，配置在從曲柄軸 1 2隔開間隔的位置，並具有與曲柄軸1 2平行的軸線的驅 動帶輪軸6 2 ;具有與該驅動帶輪軸6 2平行的軸線的從動 帶輪軸6 3 ;安裝於驅動帶輪軸6 2的驅動帶輪6 4 ;安裝於 從動帶輪軸6 3的從動帶輪6 5 ;及繞掛於驅動帶輪6 4和從 動帶輪6 5的環狀三角皮帶6 6。 驅動帶輪轴6 2係配置於曲柄軸1 2的後方者，該驅動帶 11 312/發明說明書(補件)/93-03/93100124 1240041 輪軸6 2的一端部係由設於曲柄軸箱1 4的左側箱半體1 9 的一端側軸承部6 7支持為可旋轉自如，驅動帶輪軸6 2的 中間部係由設於曲柄軸箱1 4的右側箱半體2 0的中間軸承 部6 8支持為可旋轉自如，驅動帶輪軸6 2的另一端部係由 設於變速箱5 6的右側箱5 8的另一端側軸承部6 9支持為可 旋轉自如。此外，中間軸承部6 8具有一部分沿著描繪曲柄 軸1 2的第2曲柄錘2 5的外周的旋轉執跡的形狀，且設於 曲柄軸箱1 4的右側箱半體2 0。 在曲柄軸1 2及驅動帶輪軸6 2間，在較第1曲柄錘2 4 的外方，設有較左側曲柄軸頸部2 2位於内側的傳動齒輪組 7 0，而配置於較左側曲柄軸頸部2 2位於外側的發電機3 0， 係配置於傳動齒輪組7 0的外側。 上述傳動齒輪組7 0係由固定於曲柄軸1 2的驅動齒輪 7 1、及固定於驅動帶輪軸6 2而嚙合於驅動齒輪7 1的從動 齒輪7 2所構成，輔助齒輪7 3作為可與驅動齒輪7 2相對旋 轉的齒輪而安裝於驅動帶輪軸62，該輔助齒輪73喷合於 應抑制起因於相互哺合的驅動齒輪7 1及從動齒輪7 2的喷 合部的背隙的異音的產生的驅動齒輪7 1，在從動齒輪7 2 及輔助齒輪7 3間設有彈簧（未圖示），該彈簧發揮使兩齒輪 7 2、7 3相對旋轉的方向的彈簧力。 在上述一端側軸承部6 7設有旋轉自如地貫穿驅動帶輪 軸6 2的一端部的軸承孔7 4，在該軸承孔7 4的内面及驅動 帶輪軸6 2的外面間介裝著滚珠轴承7 5。另外，在上述中 間軸承部6 8，係與上述軸承孔7 4同軸地設有旋轉自如地 12 312/發明說明書(補件)/93 -03/93100124 1240041 貫穿驅動帶輪軸6 2的軸方向中間部的軸承孔7 6，在該軸 承孔7 6的内面及驅動帶輪軸6 2的外面間介裝著滾珠軸承 7 7及環狀的密封構件7 8。另外，在上述另一端側軸承部 6 9與上述各軸承孔7 4、7 6同軸設有插入驅動帶輪軸6 2的 另一端部的有底的軸承孔7 9，在該軸承孔7 9的内面及驅 動帶輪軸6 2的外面間介裝著滾珠軸承8 0。 驅動帶輪6 4係由固定於驅動帶輪軸6 2的另一端部的驅 動側固定帶輪半體8 4、及可接近·離開驅動側固定帶輪半 體8 4而可滑動地支承於驅動帶輪軸6 2的驅動側可動帶輪 半體8 5所構成，驅動帶輪軸6 2係沿描繪曲柄軸1 2的第1 及第2曲柄錘2 4、2 5的外周的旋轉軌跡，配置於側視為與 驅動帶輪6 4的一部分重疊的位置。 另外，上述驅動側可動帶輪半體8 5係藉由在繞掛著上 述凸輪鏈條4 6 F、4 6 R的驅動鏈輪4 4 F、4 4 R上，配置在沿 著上述曲柄軸1 2的軸線方向對應的位置的帶輪驅動機構 8 6，而被於軸方向驅動者，在驅動側可動帶輪半體8 5及上 述中間軸承部6 8間配置有上述帶輪驅動機構8 6。 在滾珠軸承7 7的内輪與驅動側固定帶輪半體8 4間，在 驅動帶輪軸6 2安裝著圍繞該驅動帶輪軸6 2的圓筒狀的套 筒8 7，驅動側可動帶輪半體8 5係可軸向滑動地支承於該 套筒87。 上述帶輪驅動機構8 6包括：形成為圍繞上述套筒8 7的 圓筒狀，且固定於變速箱5 6的箱主體5 7的螺絲軸8 8 ;螺 合於該螺絲軸8 8的螺母8 9 ; —體形成於螺母8 9的外周的 13 312/發明說明書(補件)/93-03/93100124 1240041 從動齒輪9 0 ;設在支持於變速箱5 6的箱主體5 7的電動馬 達9 1的輸出軸的驅動小齒輪9 2 ;及使電動馬達9 1的旋轉 動力減速而以從驅動小齒輪9 2傳遞給從動齒輪9 0的方式 設於驅動小齒輪9 2及從動齒輪9 0間的減速齒輪機構9 3。 根據如此的帶輪驅動機構8 6，對應電動馬達9 1的動作， 螺母8 9沿驅動帶輪軸6 2的軸方向作進退動作。而且，螺 母8 9係透過滾珠軸承9 4連結於驅動側可動帶輪半體8 5， 對應螺母8 9的上述進退動作，驅動側可動帶輪半體8 5沿 驅動帶輪軸6 2的軸方向滑動。 從動帶輪軸6 3的一端部係可旋轉自如地貫穿箱主體5 7 而突入齒輪室61，且在箱主體57及從動帶輪軸63間介裝 著滾珠軸承9 5。另外，從動帶輪軸6 3的另一端部係透過 滾珠軸承9 6而可旋轉自如地支承於右側箱5 8。 從動帶輪6 5係由將軸線方向的位置設為一定而可相對 旋轉地支承於從動帶輪軸6 3的從動側固定帶輪半體9 7 ; 及可接近·離開從動側固定帶輪半體9 7而可滑動且相對旋 轉地支承於從動側固定帶輪半體9 7，同時，向從動側固定 帶輪半體9 7的方向施以彈簧力的從動側可動帶輪半體9 8 所構成。 在從動側固定帶輪半體9 7，一體設有可相對旋轉且同軸 圍繞從動帶輪軸63的圓筒狀的導引部97a，從變速箱56 的右側箱5 8側與上述從動側固定帶輪半體9 7對向的從動 側可動帶輪半體9 8，係由上述導引部9 7 a可滑動地支承。 而且，在固定於上述導引部9 7 a的右側箱5 8側的端部的彈 312/發明說明書(補件)/93-03/93100124 14 1240041 簧支持構件9 9及從動側可動帶輪半體9 8間，設有將從動 側可動帶輪半體9 8彈性作用向從動側固定帶輪半體9 7側 的彈簧1 0 0。 在上述從動側固定帶輪半體9 7的導引部9 7 a及從動帶 輪軸6 3間設有離心離合器1 0 1，對應於上述從動側固定帶 輪半體9 7繞著從動帶輪轴6 3的軸線旋轉指定以上的旋轉 數，將從動帶輪6 5的旋轉動力傳遞給從動帶輪軸6 3。 減速齒輪組5 4係以來自上述從動帶輪軸6 3的一端的旋 轉動力經由中間軸1 0 2邊使輸出軸1 0 3減速邊予以傳遞的 方式所構成，並被收納於齒輪室6 1内，中間轴1 0 2及輸出 軸1 0 3係可旋轉自如地支承於箱主體5 7及左側箱5 9，輸 出軸1 0 3的一端係從左側箱5 9突出。 鏈式傳動機構5 5係由在固定於同軸且不可相對旋轉地 連結於上述輸出軸1 0 3的驅動軸1 0 4的驅動鏈輪1 0 5 ;及 固定於後輪W R的車軸1 8的從動鏈輪1 0 6上，繞掛著環狀 的鏈條1 0 7所構成者，且被收納於後輪W R的左側配置的鏈 條箱1 0 8内。 在左側箱5 9固定著圍繞上述輸出軸1 0 3的左側箱5 9的 突出部的圓筒狀支軸1 0 9，上述鏈條箱1 0 8的前部透過徑 向軸承1 1 0支承為可搖動狀。另外，驅動軸1 0 4係透過滚 珠軸承1 1 1、1 1 1而可轉動地支承於鏈條箱1 0 8。 另一方面，在變速箱5 6的箱主體5 7透過徑向軸承1 1 3 而可搖動地支承著與上述輸出軸1 0 3及驅動軸1 0 4同軸的 搖動軸1 1 2，配置於後輪W R的右側且前後延伸的臂1 1 4的 15 312/發明說明書(補件)/93-03/93100124 1240041 前部係固定於上述搖動轴Π 2。而且，後輪W R的車軸1 8 係可旋轉地軸支於鏈條箱1 0 8的後部及上述臂1 1 4的後部 間。 但是，在皮帶式無變速機5 3的從動帶輪6 5中，從動側 可動帶輪半體9 8係為從外側與從動側固定帶輪半體9 7對 向者，且為接近·離開從動側固定帶輪半體9 7者，因此， 在變速箱5 6的外側面的右側箱5 8，其後部的外側面形成 為較前部隆起的形狀。也就是說，在右側箱5 8形成覆蓋驅 動帶輪6 4的低位部5 8 a ;及以覆蓋從動帶輪6 5的方式， 外側面較低位部5 8 a隆起且連設於上述低位部5 8 a的後部 的高位部58b。 在上述驅動帶輪軸6 2的周圍，在上述低位部5 8 a設有 通過變速機室6 0的複數透孔1 1 5…，在驅動帶輪6 4的驅 動側固定帶輪半體8 4，一體形成有從上述各透孔1 1 5…將 空氣吸入變速機室60内的複數翼片84a…。也就是說，驅 動側固定帶輪半體8 4還有被用作為風扇的機能。 在變速箱5 6的右側箱5 8，安裝有覆蓋低位部5 8 a的空 氣導入蓋1 1 6，通過上述各透孔1 1 5…的同時，朝向上述高 位部5 8 b的前端部側而開口的空氣導入通路1 1 7被形成於 空氣導入蓋1 1 6及上述低位部5 8 a間。 另外，在高位部5 8 b的前部内係以空氣排出通路1 1 8通 過變速機室6 0内的方式所形成，空氣排出通路1 1 8係形成 為對應上述空氣導入通路1 1 7的開口端的圓弧狀，該空氣 排出通路11 8係在空氣導入通路11 7的後方向下方開放。 16 312/發明說明書(補件)/93-03/93100124 1240041 又，在變速箱5 6的箱主體5 7的後側上部，連接著以從 箱主體5 7向後方側彎曲的方式所形成的空氣排出管1 1 9 的上游端，該空氣排出管1 1 9的上游端連通變速機室6 0 内，在該空氣排出管1 1 9的下游端，連接著向後下方延伸 的空氣排出管1 2 0的上游端，該空氣排出管1 2 0的下游端 係向下方開放。 而且，對應驅動側固定帶輪半體8 4的旋轉，藉由從空 氣導入通路1 1 7經由透孔1 1 5…而導入變速機室6 0的空 氣，使得皮帶式無段變速機5 3被冷卻，冷卻後的空氣從變 速機室6 0經由空氣排出通路1 1 8而排出於變速箱5 6的外 部，同時，從變速機室6 0經由空氣排出管1 1 9、1 2 0而排 出於變速箱5 6的外部，尤其是，從空氣排出管1 2 0向下方 排出的空氣係接觸於排氣管5 1 F、5 1 R的排氣消音器5 2的 連接部，從而可貢獻對排氣管5 1 F、5 1 R的冷卻。 一併參照圖7至圖9，在曲柄軸箱1 4内，收容曲柄軸 1 2的大部分及驅動帶輪軸6 2的一端部的曲柄軸室1 2 4，及 配置於曲柄軸1 2的後方側的儲油室1 2 5，係藉由設於曲柄 軸箱1 4的間隔壁1 4 b而相互區隔形成，上述儲油室1 2 5 係以延伸於驅動帶輪軸6 2的左側的方式連設形成於左引 擎蓋33内。 在較上述曲柄軸1 2的前方，在曲柄軸箱1 4的左側箱半 體1 9的下部，安裝著具有與曲柄軸1 2平行的旋轉軸線的 油泵1 2 6。 油泵1 2 6係為利用泵箱1 2 9而將回流泵1 2 7及饋送泵1 2 8 17 312/發明說明書(補件)/93-03/93100124 1240041 同軸結合所組成者，並且，回流泵1 2 7將曲柄 的機油送回儲油室1 2 5，饋送泵1 2 8吸起儲油 油並供給引擎E的各潤滑部。 上述泵箱1 2 9係在較曲柄軸1 2的前方，在 的左側箱半體1 9的下部内面，藉由相互重疊 箱構件1 3 1、1 3 2、1 3 3共同固定而結合組成者 柄軸1 2平行的軸線的旋轉軸1 3 4，以將其一苟 構件1 3 3突出的方式，而由第1〜第3箱構件 1 3 3支承為可旋轉自如的型態。 在上述旋轉軸1 3 4從第3箱構件1 3 3突出白ί 著被動齒輪135。另一方面，在曲柄軸12的》 定著與驅動鏈輪44F、44R屬一體的驅動齒輪 嚙合於驅動齒輪1 3 6的中間齒輪1 3 7係與上述 1 3 5嚙合。因此，來自曲柄軸1 2的旋轉動力仓 輪136、中間齒輪137及被動齒輪135而傳遞 的旋轉軸1 3 4。 但是，上述中間齒輪1 3 7係為固定於右引擎 裝的水泵1 3 8的旋轉軸1 3 9者，因此，來自曲 轉動力在傳遞給油泵1 2 6的同時亦傳遞給水泵 回流泵1 2 7為餘擺線泵，具備有在第2及第 1 3 2、1 3 3間固定於旋轉軸1 3 4的内轉子1 4 0 ; 第3箱構件1 3 2、1 3 3間嚙合於内轉子1 4 0的 另外，饋送泵1 2 8與回流泵1 2 7同樣為餘损 有在第1及第2箱構件1 3 1、1 3 2間固定於旋轉 3 U/發明說明書(補件)/93-03/93100124 軸室1 2 4側 室1 2 5的機 曲柄軸箱1 4 的第1〜第3 ，具有與曲 $分從第3箱 131 > 132' J突出部固接 ;一端部，固 1 3 6，並且， 被動齒輪 ^透過驅動齒 給油泵1 2 6 蓋47上安 柄軸1 2的旋 138° 3箱構件 及在第2及 外轉子1 4 1。 ί線泵，具備 卜軸1 3 4的内 18 1240041 轉子1 4 2 ;及在第1及第2箱構件1 3 1、1 3 2間嚙 子1 4 2的外轉子1 4 3。 上述回流泵1 2 7的排出口 1 4 4係設於第2箱構 將從排出口 1 4 4所排出的機油導向儲油室1 2 5側 1 4 5，係配置於曲柄軸室1 2 4内的曲柄軸1 2的下 流管1 4 5形成為俯視為略L字狀。 但是，回流泵1 2 7係在沿著曲柄軸1 2的軸線白 配置在偏離儲油室1 2 5的位置上，俯視為略L字 管1 4 5的一端部，係液密性且可插脫地插入回流 泵箱1 2 9的第2箱構件1 3 2，另外，回流管14 5 1 部，係固定連結於以區隔曲柄軸室1 2 4及儲油室 方式設於曲柄軸箱1 4的間隔壁1 4 b。 也就是說，在回流管1 4 5的一端部外周，一體 揮安裝於回流管1 4 5的一端部的0形環1 7 1的止 環狀突起1 4 5 a，回流管1 4 5的一端部係透過0形 呈液密性且可插脫地插入第2箱構件1 3 2，藉此 1 4 5的一端部呈液密性連接於上述排出口 1 4 4。 另外，回流管1 4 5的另一端部，係固定接合於 流管1 4 5的半徑方向向外側方延伸的安裝板1 4 6 板1 4 6係在儲油室1 2 5内的前端側下部藉由螺栓 定結合於上述間隔壁1 4 b。 在上述回流管1 4 5的另一端部外周，也一體突 安裝於回流管1 4 5的另一端部的0形環1 7 2的止 環狀突起1 4 5 b，利用將上述安裝板1 4 6固定結合 312/發明說明書(補件)/93-03/93100124 合於内轉 件 1 3 2， 的回流管 方，該回 j方向上 狀的回流 泵127的 由另一端 1 2 5間的 突設有發 脫作用的 環171而 ，回流管 沿著該回 ，該安裝 1 47而固 設有發揮 脫作用的 於上述間 19 1240041 隔壁1 4 b，回流管1 4 5的另一端部便透過0形環1 7 2而插 入間隔壁1 4 b，藉此，將上述回流管1 4 5的另一端部呈液 密性連接於左側箱半體1 9及左引擎蓋3 3上所設的導油路 1 4 8的一端。 上述導油路1 4 8的另一端係在儲油室1 2 5内的靠前方側 上部開口，在左側箱半體1 9及左引擎蓋3 3，設有將從導 油路1 4 8的另一端排出的機油導向儲油室1 2 5内的後方側 的導引壁1 49。 回流泵1 2 7的吸入口 1 5 0係設於第3箱構件1 3 3上，在 泵箱1 2 9及左側箱半體1 9設有連通回流泵1 2 7的吸入口 1 5 0的吸入通路1 5 1。該吸入通路1 5 1係透過濾油器1 5 2 而連接於以連通曲柄軸室1 2 4内的下部的方式而設於左側 箱半體1 9及左引擎蓋3 3的通路1 5 3。 濾油器1 5 2係以隔開吸入通路1 5 1及通路1 5 3的方式而 插入左側箱半體1 9，利用在呈密液性安裝於左引擎蓋3 3 的帽1 5 4及上述濾油器1 5 2間介設彈簧1 5 5，將上述濾油 器1 5 2安裝於曲柄軸箱1 4，使得從曲柄軸室1 2 4内的下部 經過濾油器1 5 2而被過濾的機油被吸引至回流泵1 2 7。 上述饋送泵1 2 8的吸入口 1 5 6係設於第1箱構件1 3 1 上，在該吸入口 1 5 6連接著引導從上述儲油室1 2 5所吸入 的機油的吸入管1 5 7的一端部。 該吸入管1 5 7係沿著上述回流管1 4 5而形成，同時，配 置在由該回流管1 4 5所包圍的空間内，吸入管1 5 7的一端 部係液密性且可插脫地插入饋送泵1 2 8的泵箱1 2 9的第1 20312 / Invention Specification (Supplement) / 93-03 / 93100124 1240041 For a larger view, Figure 8 is a cross-sectional view of the crankcase seen from the direction of the arrow of line 8-8 in Figure 3, and Figure 9 is an enlarged view of the main part of Figure 5. First, in FIG. 1, a body frame 11 of a motorcycle is equipped with a power unit P disposed between a front wheel WF and a rear wheel WR. The power unit P is composed of an engine E and the engine E and the rear wheel WR. It consists of a power transmission device T between 18 axles. Referring to FIGS. 2 to 6 together, the engine body 13 of the above-mentioned engine E, which is a V-shaped cylinder, includes a crank that rotatably supports a crank shaft 12 having an axis extending in the left-right direction of the body frame 11. Axle box 1 4; arranged in a V-shape that extends obliquely upwards forward, and is coupled to the front and rear cylinder blocks 1 5 F, 1 5 R of the above-mentioned crank axle box 14; each of the cylinder blocks 1 5 F, 1 5 R's front and rear cylinder heads 1 6 F, 1 6 R; and the front and rear cylinder heads 1 5 F, 1 5 R opposite to the above-mentioned front and rear cylinder blocks 1 5 F, 1 6 R, 1 6 R front and rear cylinder head covers 1 7 F, 1 7 R. The crank case 14 is a combination of the left side box half 19 disposed on the left side toward the forward direction of the motorcycle, and the right side box half 20 disposed on the right side toward the forward direction of the motorcycle. The two box halves 19 and 20 are connected to each other by a joint surface 21 arranged on the engine center C. One end portion of the crank shaft 12 is penetrated through the left crank shaft neck portion 22 provided on the left case half 19, and is supported by the crank shaft neck portion 2 to be rotatable. The other end portion of the crank shaft 12 is penetrated. The right crank journal portion 23 provided on the right case half body 20 is rotatably supported by the crank journal portion 23. The crankshaft 1 2 has a first song 8 disposed on the inner side of the left crank journal 2 2 312 / Invention Specification (Supplement) / 93-03 / 93100124 1240041 The handle hammer 2 4 and the right crank journal 2 3 The second crank hammer 2 5 on the inside is connected to the big end of the connecting rod 2 8 F which is slidably fitted to the cylinder machine 2 6 F provided to the front cylinder block 1 5 F. The large end of the connecting rod 2 8 R is connected to the piston 2 7 R of the cylinder machine 2 6 R which is slidably fitted to the rear cylinder block 1 5 R and is connected to the link. A crank pin 29 is provided between the first and second crank hammers 2 and 4 and 5 on the crank shaft 12. However, the rear cylinder block 15 R is disposed so as to deviate from the front cylinder block 15 F to one end side along the axis of the crankshaft 12. The large ends of the two connecting rods 2 8 F and 2 8 R are front sections. The connecting rod 2 8 F on the cylinder block 1 5 F side is arranged close to the second crank hammer 2 5, and the connecting rod 2 8 R on the rear cylinder block 1 5 R side is arranged near the first crank hammer 24. The first and second crank hammers 24 and 25 are connected to the crank pin 29. The engine center C is formed between the two links 2 8 F and 2 8 R in the front-rear direction of the motorcycle. A generator shaft 30 is attached to one end of the crank shaft 12 protruding from the left crank shaft neck 22, and the generator 30 is composed of a rotor 31 fixed to the end of the crank shaft 1 2 and accommodated in the generator 30. The stator 32 in the rotor 31 is configured. The generator 30 is covered by the left hood 33 which is coupled to the left side case half 19 of the crank shaft case 14, and the stator 32 is fixed to the left hood 33. A driven gear 3 5 coaxially surrounding the crank shaft 12 is arranged between the left crank journal portion 22 and the generator 30. The driven gear 35 is connected to the rotor of the generator 30 through a one-way clutch 34. 3 1. In addition, a starter motor 3 6 having a rotation axis parallel to the crankshaft 12 is supported on the upper part of the crankcase 14 so as to be located between the front and rear cylinder blocks 1 5 F and 1 5 R, The output shaft of the motor 36 is provided with a driving pinion 37. On the other hand, the first and the integrally formed spaces between the left side box half 19 of the crank case 14 and the left hood 33 described above are included in Qu 9 312 / Invention Specification (Supplement) / 93-03 / 93100124 1240041. The second intermediate gears 38 and 39 and the third intermediate gear 40 are supported so as to be rotatable about an axis parallel to the crank shaft 12. The above-mentioned driving pinion 37 is meshed with the first intermediate member having a larger diameter than the driving pinion 37. Gear 3 8 is a second intermediate gear 39 having a smaller diameter than the first intermediate gear 38, and is meshed with a third intermediate gear 40 having a larger diameter than the second intermediate gear 39 and meshed with the driven gear 35. Therefore, when the engine E is started, the starter motor 36 is actuated, and the driving force from the starter motor 36 is decelerated and transmitted to the crankshaft 12. After the engine E is started, the one-way clutch 34 is used. In the operation, the power from the crank shaft 12 is not transmitted to the starter motor 36 side. On the other end of the crank shaft 12 protruding from the right crank shaft neck 23, a pair of integrally formed drive sprocket wheels 4 4 F, 4 4 R are fixed, and one drive sprocket 4 4 F is used for winding. The cam chain 4 6 F that drives the valve device 4 5 F disposed in the front cylinder head 1 6 F is driven by another driving sprocket 4 4 R to drive the cylinder head 16 disposed in the rear 6 The cam chain 4 6 R of the moving valve device 4 5 R of R. Further, a right hood 47 covering the other end portion of the crankshaft 12 is coupled to a right case half 20 of the crankshaft case 14. Once again, in FIG. 1, an air cleaner 4 8 system disposed diagonally above the front of the engine E is mounted on the vehicle body frame 11, and a fuel tank 4 9 system disposed above the air cleaner 4 8 is mounted on the vehicle body. On the frame 11, the front and rear cylinder heads 16 F and 16 R are connected to the above-mentioned air cleaner 48 through individual suction pipes 50 F and 50 R. In addition, exhaust pipes 5 1 F, 5 1 R that guide exhaust gas discharged from the front and rear cylinder heads 1 6 F, 1 6 R are connected in common to 10 312 / Invention Specification (Supplement) / 93-03 / 93100124 1240041 The exhaust muffler 5 2 is located on the right side of the rear wheel WR. The power transmission device T is provided with a belt-type stepless speed changer 5 3 that automatically and steplessly shifts the power output from the crankshaft 12; a reduction gear set 5 4 that reduces the output of the belt-type stepless speed changer 5 3 And a chain transmission mechanism 5 5 provided between the reduction gear set 54 and the axles 18 of the rear wheel WR. The gearbox 5 6 provided in the power transmission device T includes: left and right case halves 19 and 20 integrally provided on the crank shaft case 14 and a front supporting portion 1 4 a At the same time, the rear part is located on the left side of the rear wheel WR and extends forward and backward from the box body 5 7; it is combined with the right side box 5 8 of the box body 5 7 so as to cover the right side of the front half of the box body 5 7; and The method of covering the left side of the rear half of the box body 57 is coupled to the left box 59 of the box body 57, and the front of the box body 57 is fixedly coupled to the box support portion 14a of the crank case 14. A gearbox 60 is formed between the front half of the box body 57 and the right case 58, and a gear chamber 61 is formed between the rear half of the box body 57 and the left case 59. The belt-type stepless transmission 5 3 is housed in the transmission room 60, and includes a position spaced apart from the crank shaft 12 in a plane perpendicular to the axis of the crank shaft 12 and having A drive pulley shaft 6 2 having an axis parallel to the crank shaft 12; a driven pulley shaft 6 3 having an axis parallel to the drive pulley shaft 6 2; a drive pulley 6 4 mounted on the drive pulley shaft 6 2; mounted on A driven pulley 6 5 of the driven pulley shaft 63; and an endless V-belt 6 6 wound around the driving pulley 64 and the driven pulley 65. The drive pulley shaft 6 2 is arranged behind the crank shaft 12. The drive belt 11 312 / Invention Manual (Supplement) / 93-03 / 93100124 1240041 One end of the axle 6 2 is provided in the crank shaft box 1 The one-side bearing portion 6 7 of the left side box half 19 of 4 is rotatably supported, and the middle portion of the drive pulley shaft 6 2 is provided by the intermediate bearing portion 6 provided on the right side box half 20 of the crank shaft box 4 8 is rotatably supported, and the other end portion of the drive pulley shaft 6 2 is rotatably supported by the other end side bearing portion 6 9 provided in the right case 5 8 of the transmission 5 6. Further, the intermediate bearing portion 68 has a shape that partly rotates along the outer circumference of the second crank hammer 25 that depicts the crank shaft 12, and is provided on the right half half 20 of the crank case 14. Between the crank shaft 12 and the drive pulley shaft 62, a transmission gear set 70 located on the inner side than the left crank shaft neck 2 2 is provided outside the first crank hammer 2 4 and is arranged on the left crank. The generator part 3 0 with the journal portion 22 on the outside is arranged outside the transmission gear set 70. The transmission gear set 70 is composed of a driving gear 71 fixed to a crank shaft 12 and a driven gear 7 2 fixed to a driving pulley shaft 62 and meshing with the driving gear 7 1. A gear that rotates relatively to the driving gear 72 is mounted on the driving pulley shaft 62, and the auxiliary gear 73 is sprayed to prevent backlash caused by the spraying portion of the driving gear 71 and the driven gear 72 that feed each other. The driving gear 71, which generates abnormal sound, is provided with a spring (not shown) between the driven gear 72 and the auxiliary gear 73, and the spring exerts a spring force in a direction in which the two gears 72 and 73 are relatively rotated. The one end side bearing portion 6 7 is provided with a bearing hole 7 4 rotatably penetrating one end portion of the drive pulley shaft 62, and a ball bearing is interposed between the inner surface of the bearing hole 74 and the outer surface of the drive pulley shaft 62. 7 5. In addition, the intermediate bearing portion 6 8 is provided coaxially with the bearing hole 7 4 so as to be rotatable 12 312 / Invention Manual (Supplement) / 93 -03/93100124 1240041 penetrates the middle of the axial direction of the drive pulley shaft 62 A bearing hole 76 is formed between the inner surface of the bearing hole 76 and the outer surface of the drive pulley shaft 62, and a ball bearing 77 and an annular sealing member 78 are interposed therebetween. In addition, a bottomed bearing hole 7 9 inserted into the other end of the drive pulley shaft 62 is provided coaxially with the bearing holes 7 4 and 7 6 at the other end side bearing portion. A ball bearing 80 is interposed between the inner surface and the outer surface of the drive pulley shaft 62. The drive pulley 6 4 is slidably supported on the drive by a drive-side fixed pulley half 8 4 fixed to the other end portion of the drive-pulley shaft 62 and a drive-side fixed pulley half 8 4 that can be approached and separated from the drive-side fixed pulley half 8 4. The drive-side movable pulley half 8 5 of the pulley shaft 62 is composed of the drive pulley shaft 62 and the rotation trajectory along the outer trajectories of the first and second crank hammers 2 4 and 2 5 depicting the crank shaft 12. The side is regarded as a position overlapping a part of the drive pulley 64. The drive-side movable pulley half 8 5 is arranged along the crank shaft 1 on the drive sprocket 4 4 F, 4 4 R around the cam chains 4 6 F, 4 6 R. The pulley drive mechanism 86 at a position corresponding to the axial direction of 2 is arranged in the axial direction, and the pulley drive mechanism 8 6 is arranged between the drive-side movable pulley half 85 and the intermediate bearing portion 8 8. . Between the inner wheel of the ball bearing 7 7 and the drive-side fixed pulley half 8 4, a cylindrical sleeve 8 7 is mounted around the drive pulley shaft 62, and the drive-side movable pulley half The body 8 5 is supported by the sleeve 87 so as to be axially slidable. The pulley driving mechanism 8 6 includes a screw shaft 8 8 formed in a cylindrical shape surrounding the sleeve 87 and fixed to a box body 57 of the transmission 5 6, and a nut screwed to the screw shaft 8 8. 8 9; 13 body 312 formed on the outer periphery of the nut 8 9 / Invention Specification (Supplement) / 93-03 / 93100124 1240041 Driven gear 9 0; Electric motor provided in the case body 5 7 supported by the transmission 5 6 A driving pinion 9 2 of an output shaft of the motor 91; and a rotation pinion of the electric motor 91 is reduced to be provided to the driving pinion 92 and the driven pinion 9 so as to be transmitted from the driving pinion 92 to the driven gear 90. The reduction gear mechanism 93 between the gears 90. According to such a pulley driving mechanism 86, in accordance with the operation of the electric motor 91, the nut 88 is moved forward and backward in the axial direction of the driving pulley shaft 62. Further, the nut 8 9 is connected to the driving-side movable pulley half 8 5 through a ball bearing 9 4. In response to the advance and retreat of the nut 8 9, the driving-side movable pulley half 8 5 is along the axial direction of the driving pulley shaft 62. slide. One end of the driven pulley shaft 63 is rotatably penetrated through the box body 5 7 to protrude into the gear chamber 61, and a ball bearing 95 is interposed between the box body 57 and the driven pulley shaft 63. In addition, the other end portion of the driven pulley shaft 63 is rotatably supported by the right side case 58 through a ball bearing 96. The driven pulley 6 5 is fixed on the driven side of the driven pulley shaft 6 3 with a fixed position in the axial direction, and is fixed on the driven side of the driven pulley half 9 7. The pulley half body 9 is slidably and relatively rotatably supported on the driven side fixed pulley half body 9 7, and at the same time, the driven side is moved by applying a spring force to the driven side fixed pulley half body 7 7. It consists of a pulley half 9 8. On the driven side, the fixed pulley half 97 is integrally provided with a cylindrical guide portion 97a that can rotate relatively and coaxially surrounds the driven pulley shaft 63. The right side of the gearbox 56 on the right side of the gearbox 56 and the following driven The driven side movable pulley half 9 8 opposite to the side fixed pulley half 9 7 is slidably supported by the guide portion 9 7 a. Furthermore, the spring 312 / Invention Manual (Supplement) / 93-03 / 93100124 14 1240041 spring support member 9 9 and the driven side movable belt fixed to the end of the right box 5 8 side of the guide portion 9 7 a Between the wheel halves 98, springs 100 on the driven side movable pulley halves 98 are elastically applied to the driven side fixed pulley halves 97. A centrifugal clutch 1 0 1 is provided between the guide part 9 7 a of the driven-side fixed pulley half body 9 7 and the driven pulley shaft 63, corresponding to the above-mentioned driven-side fixed pulley half body 9 7. The axis of rotation of the driven pulley shaft 63 is specified by the number of rotations or more, and the rotational power of the driven pulley 65 is transmitted to the driven pulley shaft 63. The reduction gear set 5 4 is constituted so that rotational power from one end of the driven pulley shaft 6 3 described above is transmitted through the intermediate shaft 1 0 2 while decelerating the output shaft 1 0 3 and is housed in a gear chamber 6 1 The middle shaft 102 and the output shaft 103 are rotatably supported by the box body 57 and the left side box 59, and one end of the output shaft 103 is projected from the left side box 59. The chain transmission mechanism 55 is composed of a drive sprocket 1 0 5 fixed to a drive shaft 1 0 4 which is coaxially and non-rotatably connected to the output shaft 10 3; and an axle 18 fixed to the rear wheel WR. A driven chain sprocket 1 06 is formed by a ring-shaped chain 1 07 and is stored in a chain box 108 arranged on the left side of the rear wheel WR. A cylindrical support shaft 1 9 is fixed to the left case 5 9 so as to surround the protruding portion of the left case 5 9 of the output shaft 1 0 3. The front part of the chain case 1 8 is supported by a radial bearing 1 1 0 as Shakeable. The drive shaft 104 is rotatably supported by the chain case 108 through ball bearings 1 1 1 and 1 1 1. On the other hand, a case main body 5 7 of the transmission case 5 6 supports a rocking shaft 1 1 2 coaxially with the output shaft 103 and the drive shaft 10 4 through a radial bearing 1 1 3, and is disposed at The right side of the rear wheel WR and the front and rear extending arms 1 1 4 15 312 / Invention Specification (Supplement) / 93-03 / 93100124 1240041 The front portion is fixed to the above-mentioned swing shaft Π 2. The axle 18 of the rear wheel W R is rotatably supported between the rear portion of the chain case 108 and the rear portion of the arm 1 1 4. However, in the driven pulley 65 of the beltless transmission 5 3, the driven side movable pulley half 9 8 is the opposite side of the driven side fixed pulley half 9 7 from the outside, and is Since the pulley half body 97 is approached and separated from the driven side, the right side case 5 8 on the outer side surface of the gearbox 56 is formed with a raised shape on the outer side than the front side. In other words, a lower portion 5 8 a covering the driving pulley 64 is formed on the right case 5 8; and a lower portion 5 8 a on the outer side is bulged and connected to the above in a manner to cover the driven pulley 65. The high portion 58b at the rear of the low portion 5 8a. Around the drive pulley shaft 62, a plurality of through-holes 1 1 5 ... passing through the transmission chamber 60 are provided in the lower portion 5 8a, and a pulley half 8 4 is fixed on the drive side of the drive pulley 64. A plurality of fins 84a, which draw air into the transmission chamber 60 through the above-mentioned through holes 1 1 5... Are integrally formed. That is, the driving-side fixed pulley half body 84 also has a function of being used as a fan. An air introduction cover 1 1 6 covering the lower portion 5 8 a is attached to the right case 5 8 of the transmission 5 6 and passes through the above-mentioned through holes 1 1 5... And faces the front end portion side of the upper portion 5 8 b. An open air introduction path 1 1 7 is formed between the air introduction cover 1 16 and the lower portion 5 8 a. In addition, an air exhaust passage 1 1 8 is formed in the front portion of the upper portion 5 8 b through the transmission room 60, and the air exhaust passage 1 1 8 is formed to correspond to the opening of the air introduction passage 1 1 7. The end is arc-shaped, and the air discharge path 118 is opened downward in the rear direction of the air introduction path 117. 16 312 / Invention Manual (Supplement) / 93-03 / 93100124 1240041 Furthermore, the rear upper part of the case main body 5 7 of the gearbox 5 6 is connected to be formed so as to be bent from the case main body 57 to the rear side. The upstream end of the air exhaust pipe 1 1 9 communicates with the transmission room 60 0 at the upstream end of the air exhaust pipe 1 1 9. At the downstream end of the air exhaust pipe 1 1 9, the air exhaust pipe 1 extending backward and downward is connected. At the upstream end of 20, the downstream end of the air exhaust pipe 120 is open downward. Furthermore, in response to the rotation of the drive-side fixed pulley half body 8 4, the air of the transmission chamber 60 is introduced from the air introduction path 1 1 7 through the through hole 1 1 5... So that the belt-type stepless transmission 5 3 After being cooled, the cooled air is discharged from the transmission room 60 through the air exhaust passage 1 1 8 to the outside of the transmission 56, and from the transmission room 60 through the air exhaust pipes 1 1 1 and 1 2 0, Discharged from the outside of the transmission 56, in particular, the air exhausted downward from the air exhaust pipe 120 is in contact with the connection portion of the exhaust muffler 5 2 of the exhaust pipes 5 1 F, 5 1 R, so that Contributes to the cooling of the exhaust pipes 5 1 F, 5 1 R. Referring to FIGS. 7 to 9 together, in the crankshaft box 14, a crankshaft chamber 1 2 4 that houses most of the crankshaft 12 and one end portion of the drive pulley shaft 62, and a crankshaft 12 that is disposed on the crankshaft 12 The oil storage chambers 1 2 5 on the rear side are separated from each other by partition walls 1 4 b provided on the crank case 14. The oil storage chambers 1 2 5 extend to the left of the drive pulley shaft 62 The method is continuously formed in the left hood 33. An oil pump 1 2 6 having a rotation axis parallel to the crank shaft 12 is mounted below the crank case 12 at a lower portion than a left side of the crank case 12 in front of the crank shaft 12. The oil pump 1 2 6 is formed by coaxially combining the return pump 1 2 7 and the feed pump 1 2 8 17 312 / Invention Specification (Supplement) / 93-03 / 93100124 1240041 in order to use the pump box 1 2 9 The pump 1 2 7 sends the crank oil back to the oil storage chamber 1 2 5, and the feed pump 1 2 8 sucks up the oil and supplies it to each lubricating part of the engine E. The above pump box 1 2 9 is located in front of the crank shaft 12 and at the lower inner surface of the left side box half 19, and is combined and fixed by overlapping the box members 1 3 1, 1 3 2, 1 3 3 with each other. The rotation axis 1 3 4 of the parallel axis of the arbor 12 is supported by the first to third box members 1 3 3 in a rotatable manner so as to protrude the member 1 3 3. A passive gear 135 protrudes from the third box member 1 3 3 on the rotation shaft 1 3 4. On the other hand, in the crankshaft 12, the driving gears integral with the driving sprockets 44F and 44R are fixed to the driving gears 1 3 6 and the intermediate gears 1 3 7 are engaged with the above 1 3 5. Therefore, the rotary shaft 1 3 4 transmitted from the rotary power pulley 136, the intermediate gear 137, and the driven gear 135 from the crank shaft 12. However, the above-mentioned intermediate gear 1 3 7 is fixed to the rotating shaft 1 3 9 of the water pump 1 3 8 mounted on the right engine. Therefore, the bending rotational force is transmitted to the oil pump 1 2 6 as well as the water pump return pump 1. 2 7 is an epicycloid pump, which is provided with an inner rotor 1 4 0 fixed to a rotating shaft 1 3 4 between the second and the first 3 2 and 1 3 3; the third box member 1 3 2 and 1 3 3 mesh with each other. In addition to the inner rotor 1 4 0, the feed pump 1 2 8 is the same as the return pump 1 2 7 and has a residual loss. The first and second tank members 1 3 1 and 1 3 2 are fixed to the rotation 3 U / Invention Specification ( (Supplements) / 93-03 / 93100124 Shaft chamber 1 2 4 Side chamber 1 2 5 Machine crank shaft box 1 4th to 3rd, with the points from the third box 131 > 132 'J One end is fixed at 1 3 6 and the driven gear ^ is driven through the driving gear to the oil pump 1 2 6 and the cover 47 is rotated 138 ° on the cover 47. The 3 box member and the second and outer rotor 1 4 1 are connected. The line pump includes an inner rotor 18 1240041 with a rotor 1 3 4 and a rotor 1 4 2; and an outer rotor 1 4 3 with a rod 1 4 2 between the first and second tank members 1 3 1 and 1 3 2. The discharge port 1 4 4 of the return pump 1 2 7 is provided in the second tank structure, and the oil discharged from the discharge port 1 4 4 is guided to the oil storage chamber 1 2 5 side 1 4 5 and is arranged in the crank shaft chamber 1 2 The down pipe 1 4 5 of the crank shaft 12 in 4 is formed in an L-shape in plan view. However, the return pump 1 2 7 is arranged along the axis of the crankshaft 12 at a position deviated from the oil storage chamber 1 2 5. One end portion of the pipe 1 4 5 is a liquid-tight and can be sealed in plan view. The second tank member 1 3 2 of the return pump casing 1 2 9 is inserted and inserted, and the return pipe 14 5 1 is fixedly connected to the crank shaft by separating the crank shaft chamber 1 2 4 and the oil storage chamber. The partition walls of the box 1 4 b. In other words, on the outer periphery of one end portion of the return pipe 1 4 5, a ring-shaped protrusion 1 4 5 a of the 0-ring 1 7 1 mounted on one end portion of the return pipe 1 4 5 is integrated. One end portion is liquid-tight through the 0-shape and is detachably inserted into the second box member 1 3 2, whereby one end portion of 1 4 5 is connected to the discharge port 1 4 4 in a liquid-tight manner. The other end of the return pipe 1 4 5 is fixed to the mounting plate 1 4 6 extending outward in the radial direction of the flow pipe 1 4 5. The plate 1 4 6 is at the front end side in the oil storage chamber 1 2 5. The lower part is fixedly connected to the partition wall 1 4 b by bolts. On the outer periphery of the other end portion of the return tube 1 4 5, a ring-shaped protrusion 1 4 5 b integrally protrudingly mounted on the other end portion of the return tube 1 4 5 is used as the mounting plate 1. 4 6 Fixed combination 312 / Invention specification (Supplement) / 93-03 / 93100124 The return pipe side of the inner rotating part 1 3 2 ， The return pump 127 shaped in the direction of j from the other end 1 2 5 The protuberance is provided with a ring 171 for hair loss, and the return pipe is along this turn. The installation 1 47 is fixedly provided with a disengagement in the above room 19 1240041 partition wall 1 4 b, and the other end of the return pipe 1 4 5 Then, the partition wall 1 4 b is inserted through the 0-ring 1 7 2, and the other end of the return pipe 1 4 5 is connected to the left case half 19 and the left hood 3 3 in a liquid-tight manner. One end of the oil-conducting channel 1 4 8 is provided. The other end of the above oil guide path 1 4 8 is opened in the upper part on the front side in the oil storage chamber 1 2 5. The left side of the tank half 19 and the left hood 3 3 are provided with the oil guide path 1 4 The oil discharged from the other end of 8 is guided to a rear side guide wall 1 49 in the oil storage chamber 1 2 5. The suction port 1 5 0 of the return pump 1 2 7 is provided on the third tank member 1 3 3. The suction box 1 2 9 and the left side box half 19 are provided with a suction port 1 2 7 which communicates with the return pump 1 2 7. The suction path 1 5 1. The suction passage 1 5 1 is a permeation filter 1 5 2 and is connected to a passage 1 5 3 provided on the left case half 19 and the left hood 3 3 so as to communicate with the lower portion of the crankshaft chamber 1 2 4. . The oil filter 1 5 2 is inserted into the left case half 19 so as to separate the suction passage 1 5 1 and the passage 1 5 3, and the cap 1 5 4 and the left hood 3 3 which are liquid-tightly attached are used. A spring 1 5 5 is interposed between the oil filters 1 5 2 and the oil filters 1 5 2 are mounted on the crank case 14 so that the oil filter 1 5 2 is passed from the lower part of the crank shaft chamber 1 2 4 The filtered oil is drawn to the return pump 1 2 7. The suction port 1 5 6 of the feed pump 1 2 8 is provided on the first tank member 1 3 1. The suction port 1 5 6 is connected to a suction pipe 1 for guiding oil sucked from the oil storage chamber 1 2 5. 5 7 at one end. The suction pipe 1 5 7 is formed along the return pipe 1 4 5 and is disposed in a space surrounded by the return pipe 1 4 5. One end of the suction pipe 1 5 7 is liquid-tight and insertable. Insert the pump box of the feed pump 1 2 8 off the ground 1 2 9 1 20
312/發明說明書(補件)/93-03/93100124 1240041 上述間隔壁1 4 b的連接部的前方側，以連通儲油室1 2 5内 的下部的方式配設於曲柄軸箱1 4。而且，使得從儲油室1 2 5 内的下部經過濾油器1 6 1而被過濾的機油被吸引至饋送泵 128° 上述饋送泵1 2 8的排出口 1 6 3係設於第1箱構件1 3 1 上，該排出口 1 6 3係透過内藏於第1箱構件1 3 1的檢查閥 1 6 4，而連接於曲柄軸箱1 4的左側箱半體1 9上所設的通路 1 6 5。另外，在上述左側箱半體1 9的前端下部，安裝有油 冷卻器1 6 6及濾油器1 6 7，在該濾油器1 6 7與上述左侧箱 半體1 9間夾入該油冷卻器1 6 6 ，上述通路1 6 5係透過油 冷卻器1 6 6連接於濾油器1 6 7。 另一方面，將機油供給曲柄軸箱1 4之左側及右側曲柄 軸頸部2 2、2 3與前部及後部氣缸蓋1 6 F、1 6 R的動閥裝置 4 5 F、4 5 R等的潤滑部用的機油通路1 6 8，係設於引擎本體 1 3上，由上述濾油器1 6 7所濾淨的機油被導向該機油通路 1 6 8。而且，在靠近油冷卻器1 6 6的部分，介設於上述機油 通路1 6 8及儲油室1 2 5間的洩流閥1 6 9係配設於左側箱半 體1 9。 接著，說明本實施例的作用，在曲柄軸1 2較沿著其軸 方向的一端側所具備的第1曲柄錘2 4的外側，在曲柄軸 1 2及無段變速機5 3的驅動帶輪軸6 2之間設有傳動齒輪組 7 0，在曲柄軸1 2的一端部安裝著位於傳動齒輪組7 0外側 的發電機3 0，但側視為在與發電機3 0重疊的位置上配置 驅動帶輪6 4的局部的驅動帶輪軸6 2的中間部，係由設於 22 312/發明說明書(補件)/93-03/93100124 1240041 曲柄軸箱1 4的中間軸承部6 8支承為可旋轉自如，中間軸 承部6 8的一部分形成為沿著描繪曲柄軸1 2所具備的第1 及第2曲柄錘2 5的外周的旋轉軌跡的形狀。 而且，在曲柄軸1 2較沿著其軸方向的另一端側所具備 的第2曲柄錘2 5的外側，在固定於曲柄軸1 2的驅動鏈輪 4 4 F、4 4 R上繞掛著凸輪鏈條4 6 F、4 6 R，但沿著從動帶輪軸 6 3滑動驅動與固定於驅動帶輪軸6 2的驅動側固定帶輪8 4 一起構成驅動帶輪6 4的驅動側可動帶輪8 5的帶輪驅動機 構8 6，係沿著曲柄軸1 2的軸方向配置於對應上述驅動鏈 輪44F、44R的位置。 因此，可以側視為一部分與發電機3 0重疊的方式使驅 動帶輪6 4靠近曲柄軸1 2側，其結果，可縮短動力單元P 的前後長度，進而可進一步將軸距短縮化。 另外，在傳動齒輪組7 0的外側，在曲柄軸箱14設有將 驅動帶輪軸6 2的一端部支承為可旋轉自如的一端侧軸承 部6 7，因此，在傳動齒輪組7 0的兩側，藉由兩邊支持驅 動帶輪軸6 2以減輕中間軸承部6 8的負荷，可儘量將中間 軸承部6 8小型化，使得驅動帶輪軸6 2更為靠近第2曲柄 錘2 5側，而可更為縮短動力單元P的前後長度，進而可進 一步將軸距短縮化。 另外，在曲柄軸箱1 4結合有前後配置為V形的前部及 後部氣缸體1 5 F、1 5 R，後部氣缸體1 5 R係配置為從前部氣 缸體1 5 F偏向沿著曲柄軸1 2的軸線的一端側，因此，利用 產生於前部氣缸體1 5 F的後方的空間，可將皮帶式無段變 23 312/發明說明書(補件)/93-03/93100124 1240041 的 長 度 ， 而 且 可 提 升 吸 入 管 的 組 裝性 0 根 據 中 請 專 利 範 圍 第 4 項 之 發 明， 可縮 短 從 儲 油 室 至 饋 送 泵 的 機 油 通 路 而 提 高 饋 送 泵 的 果效 率 ， 而 且 可 抑 制 從 濾 油 器 經 由 吸 入 管 到 達 饋 送 泵 的 路徑 上的 液 壓 損 失 〇 [ 圖 式 簡 單 說 明 ] 圖 1 為 白 動 二 輪 車 的 側 視 圖 〇 圖 2 為 從 與 圖 1 相 同 方 向 所 見 動力 口 σ 一 早兀 的 局 部 剖 開 的 側 視 圖 〇 圖 3 為 沿 著 圖 2 中 之 3 ( 3線所作的剖面圖 1 ° 圖 4 為 圖 3 的 主 要 部 位 放 大 圖 〇 圖 5 為 從 圖 3 的 箭 頭 5 的 方 向 所見 動力 單 元 的 局 部 剖 開 的 側 視 圖 〇 圖 6 為 沿 著 圖 2 中 之 6 -1 5線所作的剖面圖 1 ° 圖 7 為 圖 6 的 主 要 部 位 放 大 圖 〇 圖 8 為 從 圖 3 的 8 8線箭頭方向所見曲柄 ，軸箱的剖面 圖 〇 圖 9 為 圖 5 的 主 要 部 位 放 大 圖 〇 (元件符號說明） C 引 擎 中 心 E 引 擎 P 動 力 單 元 T 動 力 傳 動 裝 置 WF 前 輪 WR 後 輪 312/發明說明書(補件)/93-03/93100124 27 1240041 11 車 體 框 架 12 曲 柄 軸 13 引 擎 本 體 14 曲 柄 軸 箱 14a 箱 支 持 部 14b 間 隔 壁 1 5F 前 部 氣 缸 體 1 5R 後 部 氣 缸 體 1 6F 前 部 氣 缸 蓋 1 6R 後 部 氣 缸 蓋 1 7F 前 部 氣 缸 蓋 罩 1 7R 後 部 氣 缸 蓋 罩 18 車 軸 19 左 側 箱 半 體 20 右 側 箱 半 體 21 引 擎 中 心 C 上 的結合面 22 左 側 曲 柄 轴 頸 部 23 右 側 曲 柄 軸 頸 部 24 第 1 曲 柄 錘 25 第 2 曲 柄 錘 26F 搪 缸 機 26R 搪 缸 機 27F 活 塞 27R 活 塞 312/發明說明書(補件)/93-03/93100124 28 1240041 28F 連 桿 28R 連 桿 29 曲 柄 銷 30 發 電 機 3 1 轉 子 32 定 子 33 左 引 擎 蓋 34 單 向 離 合 器 35 從 動 齒 輪 36 起 動 馬 達 37 驅 動 小 齒 輪 38 第 1 中 間 齒 輪 39 第 2 中 間 齒 輪 40 第 3 中 間 齒 輪 44F 驅 動 鏈 輪 44R 驅 動 鏈 輪 45F 動 閥 裝 置 45R 動 閥 裝 置 46F 凸 輪 鏈 條 46R 凸 輪 鏈 條 47 右 引 擎 蓋 48 空 氣 淨 化 器 49 燃 料 箱 50F 吸 氣 管 312/發明說明書(補件)/93-03/93100124 29 1240041 50R 吸 氣 管 51F 排 氣 管 51R 排 氣 管 52 排 氣 消 音 器 53 皮 帶 式 無 段 變 速機 54 減 速 齒 輪 組 55 鏈 式 傳 動 機 構 56 變 速 箱 57 箱 主 體 58 右 側 箱 58a 低 位 部 58b 位 部 59 左 側 箱 60 變 速 機 室 61 齒 輪 室 62 驅 動 帶 輪 軸 63 從 動 帶 輪 軸 64 驅 動 帶 輪 65 從 動 帶 輪 66 環 狀 角 皮 帶 67 一 端 側 軸 承 部 68 中 間 軸 承 部 69 另 一 端 側 軸 承 部 70 傳 動 齒 輪 組 312/發明說明書(補件)/93 -03/93100124 30 1240041 71 驅 動 齒 輪 72 從 動 齒 輪 73 輔 助 齒 輪 74 軸 承 孔 75 滾 珠 軸 承 76 軸 承 孔 77 滾 珠 軸 承 78 密 封 構 件 79 軸 承 孔 80 滾 珠 軸 承 84 驅 動 側 固 定 帶 輪 84a 翼 片 85 驅 動 側 可 動 帶 輪 86 帶 輪 驅 動 機 構 87 套 筒 88 螺 絲 轴 89 螺 母 90 從 動 齒 輪 91 電 動 馬 達 92 驅 動 小 齒 輪 93 減 速 齒 輪 機 構 94 滾 珠 軸 承 95 滚 珠 軸 承 96 滾 珠 軸 承 312/發明說明書(補件)/93-03/93100124 31 1240041 97 從 動 側 固 定 帶 輪 半 體 97a 導 引 部 98 從 動 側 可 動 帶 輪 半 體 99 彈 簧 支 持 構 件 1 00 彈 簧 10 1 離 心 離 合 器 1 02 中 間 軸 1 03 出 軸 1 04 驅 動 轴 1 05 驅 動 鏈 輪 1 06 從 動 鍵 輪 1 07 鏈 條 1 08 鏈 條 箱 1 09 圓 筒 狀 支 軸 110 徑 向 軸 承 111 滾 珠 軸 承 112 搖 動 轴 113 徑 向 軸 承 114 臂 115 透 孔 116 空 氣 導 入 蓋 117 空 氣 導 入 通 路 118 空 氣 排 出 通 路 119 空 氣 排 出 管 312/發明說明書(補件)/93 -03/93100124 32 1240041 120 空 氣 排 出 管 1 24 曲 柄 軸 室 125 儲 油 室 126 油 泵 1 27 回 流 泵 128 饋 送 泵 129 泵 箱 131 第 1 箱 構 件 132 第 2 箱 構 件 133 第 3 箱 構 件 134 旋 轉 軸 135 被 動 齒 輪 136 驅 動 齒 輪 137 中 間 齒 輪 138 水 泵 139 旋 轉 軸 140 内 轉 子 141 外 轉 子 142 内 轉 子 143 外 轉 子 144 排 出 口 145 回 流 管 145a 環 狀 突 起 145b 環 狀 突 起 312/發明說明書(補件)/93-03/93100124 33 1240041 146 安 裝 板 147 螺 栓 148 導 油 路 149 導 引 壁 150 吸 入 V 15 1 吸 入 通 路 152 濾、 油 器 153 通 路 154 帽 155 彈 簧 156 吸 入 Π 157 吸 入 管 157a 環 狀 突 起 157b 環 狀 突 起 158 安 裝 板 159 螺 栓 160 通 路 161 濾 油 器 162 彈 簧 163 排 出 口 164 檢 查 閥 165 通 路 166 油 冷 卻 器 167 濾 油 器 312/發明說明書(補件)/93-03/93100124 34 1240041 168 機 油 通路 1 69 洩 流 閥 17 1 0 形 環 172 0 形 環 173 0 形 環 174 0 形 環 35 312/發明說明書(補件)/93 -03/93100124312 / Invention Manual (Supplement) / 93-03 / 93100124 1240041 The front side of the connection part of the partition wall 1 4 b is arranged on the crank case 14 so as to communicate with the lower part of the oil storage chamber 1 2 5. In addition, the oil filtered from the lower part of the oil storage chamber 1 2 5 through the oil filter 16 1 is attracted to the feed pump 128 °. The discharge port 1 6 3 of the feed pump 1 2 8 is provided in the first tank. On the member 1 3 1, the discharge port 1 6 3 is provided through the inspection valve 1 6 4 built in the first box member 1 3 1 and is connected to the left side box half 19 of the crank case 14 Path 1 6 5. In addition, an oil cooler 16 and an oil filter 16 are attached to the lower part of the front end of the left case half 19, and the oil filter 1 67 and the left case half 19 are sandwiched therebetween. The oil cooler 1 6 6 is connected to the oil filter 1 6 7 through the oil cooler 16 6 through the oil cooler 16. On the other hand, oil is supplied to the left and right crank journal portions 2 2, 2 3 of the crank case 1 4 and the front and rear cylinder heads 1 6 F, 1 6 R. Actuating valve devices 4 5 F, 4 5 R The oil passage 1 6 8 for the lubricating part is provided on the engine body 13 and the oil filtered by the oil filter 16 7 is guided to the oil passage 1 6 8. Further, in a portion close to the oil cooler 16, a drain valve 16 9 interposed between the above-mentioned oil passage 16 8 and the oil storage chamber 12 25 is arranged on the left side tank half 19. Next, the operation of the present embodiment will be described. The crank shaft 12 is provided on the outer side of the first crank hammer 2 4 provided on one end side in the axial direction, and on the drive belts of the crank shaft 12 and the stepless transmission 5 3. A transmission gear set 70 is provided between the axles 62, and a generator 30 located outside the transmission gear set 70 is installed at one end of the crank shaft 12, but the side is regarded as a position overlapping the generator 30 The middle part of the partial drive pulley shaft 62 with the drive pulley 6 4 is supported by the intermediate bearing portion 6 8 provided at 22 312 / Invention Specification (Supplement) / 93-03 / 93100124 1240041 crank case 14 A part of the intermediate bearing portion 68 is rotatably formed in a shape along which the trajectory of rotation of the outer periphery of the first and second crank hammers 25 included in the crank shaft 12 is drawn. Further, the crank shaft 12 is wound on the drive sprocket 4 4 F, 4 4 R fixed to the crank shaft 1 2 on the outside of the second crank hammer 25 provided on the other end side in the axial direction. The cam chains 4 6 F and 4 6 R are engaged, but the sliding drive along the driven pulley shaft 6 3 and the drive-side fixed pulley 8 4 fixed to the drive pulley shaft 6 2 constitute the drive-side movable belt of the drive pulley 64. The pulley driving mechanism 86 of the wheel 85 is disposed along the axial direction of the crank shaft 12 at a position corresponding to the drive sprocket 44F, 44R. Therefore, the drive pulley 64 can be brought closer to the crankshaft 12 side so that part of it overlaps with the generator 30. As a result, the front-rear length of the power unit P can be shortened, and the wheelbase can be further shortened. In addition, on the outside of the transmission gear set 70, a crankshaft box 14 is provided with one end-side bearing portion 67 that supports one end portion of the drive pulley shaft 62 so as to be rotatable. Side, by supporting the driving pulley shaft 62 on both sides to reduce the load on the intermediate bearing portion 68, the intermediate bearing portion 68 can be miniaturized as much as possible, so that the driving pulley shaft 62 is closer to the second crank hammer 25 side, and The front-rear length of the power unit P can be further shortened, and the wheelbase can be further shortened. In addition, the front and rear cylinder blocks 1 5 F and 1 5 R, which are arranged in a V shape in the front and rear, are coupled to the crankcase 14, and the rear cylinder block 1 5 R is arranged to deviate from the front cylinder block 1 5 F along the crank. One end side of the axis of the shaft 12, so the belt-type stepless change can be made using the space behind the front cylinder block 1 5 F 23 312 / Invention Specification (Supplement) / 93-03 / 93100124 1240041 The length and the assemblability of the suction pipe can be improved. According to the invention in item 4 of the patent application, the oil passage from the oil storage chamber to the feed pump can be shortened, the efficiency of the feed pump can be improved, and the passage from the oil filter can be suppressed. Hydraulic loss on the path of the suction pipe to the feed pump. [Simplified illustration of the drawing] Figure 1 is a side view of the white-moving two-wheeler. Figure 2 is a side view of a partially cutaway power port σ seen from the same direction as in Figure 1. 〇 Figure 3 is a cross-section taken along line 3 (3 in Figure 2 Figure 1 ° Figure 4 is an enlarged view of the main part of Figure 3; Figure 5 is a partially cut-away side view of the power unit seen from the direction of arrow 5 in Figure 3; Figure 6 is taken along line 6-15 in Figure 2 Sectional view made 1 ° Figure 7 is an enlarged view of the main part of FIG. 6. FIG. 8 is a cross-sectional view of the crank and the axle box as viewed from the direction of the arrow of line 88 of FIG. 3. FIG. 9 is an enlarged view of the main part of FIG. Explanation of component symbols) C Engine center E Engine P Power unit T Power transmission WF Front wheel WR Rear wheel 312 / Invention manual (Supplement) / 93-03 / 93100124 27 1240041 11 Body frame 12 Crankshaft 13 Engine body 14 Crankshaft Box 14a Box support 14b Partition wall 1 5F Front cylinder block 1 5R Rear cylinder block 1 6F Front Cylinder head 1 6R Rear cylinder head 1 7F Front cylinder head cover 1 7R Rear cylinder head cover 18 Axle 19 Left side box half 20 Right side box half 21 Joint surface on engine center C 22 Left side crankshaft 23 Right side crankshaft Neck 24 1st Crank Hammer 25 2nd Crank Hammer 26F Cylinder Machine 26R Cylinder Machine 27F Piston 27R Piston 312 / Instruction Manual (Supplement) / 93-03 / 93100124 28 1240041 28F Connecting Rod 28R Connecting Rod 29 Crank Pin 30 Generator 3 1 rotor 32 stator 33 left hood 34 one-way clutch 35 driven gear 36 starter motor 37 drive pinion 38 first intermediate gear 39 second intermediate gear 40 third intermediate gear 44F drive sprocket 44R drive sprocket 45F Actuating valve device 45R Actuating valve device 46F Cam chain 46R Cam chain 47 Right hood 48 Air cleaner 49 Fuel tank 50F Suction pipe 312 / Invention manual (Supplement) / 93-03 / 93100124 29 1240041 50R Suction pipe 51F Exhaust pipe 51R Exhaust pipe 52 Exhaust muffler 53 Belt-type stepless speed changer 54 Reduction gear set 55 Chain drive mechanism 56 Gearbox 57 Box body 58 Right side box 58a Low position 58b Position 59 Left case 60 Gearbox 61 Gear room 62 Driven pulley shaft 63 Driven pulley shaft 64 Driven pulley 65 Driven pulley 66 Endless angle belt 67 One end side bearing portion 68 Middle bearing portion 69 the other end Side bearing part 70 Transmission gear set 312 / Invention manual (Supplement) / 93 -03/93100124 30 1240041 71 Drive gear 72 Drive gear 73 Auxiliary gear 74 Bearing hole 75 Ball bearing 76 Bearing hole 77 Ball bearing 78 Seal member 79 Bearing Hole 80 Ball bearing 84 Drive-side fixed pulley 84a Tab 85 Drive-side movable pulley 86 Pulley drive mechanism 87 Sleeve 88 Screw shaft 89 Nut 90 Driven gear 91 Electric motor 92 Drive pinion 93 Reducer gear mechanism 94 Ball bearing 95 Ball bearing 96 Ball bearing 312 / Instruction manual (Supplement) / 93-03 / 93100124 31 1240041 97 Fixed on the driven side Pulley half 97a Guide 98 Driven side movable pulley half 99 Spring support member 1 00 Spring 10 1 Centrifugal clutch 1 02 Intermediate shaft 1 03 Out shaft 1 04 Drive shaft 1 05 Drive sprocket 1 06 Follower key Wheel 1 07 Chain 1 08 Chain box 1 09 Cylindrical support shaft 110 Radial bearing 111 Ball bearing 112 Swing shaft 113 Radial bearing 114 Arm 115 Through hole 116 Air introduction cover 117 Air introduction passage 118 Air exhaust passage 119 Air exhaust pipe 312 / Invention Manual (Supplement) / 93 -03/93100124 32 1240041 120 Air exhaust pipe 1 24 Crankshaft chamber 125 Oil storage chamber 126 Oil pump 1 27 Return pump 128 Feed pump 129 Pump box 131 First box member 132 Second box member 133 Third box member 134 Rotary shaft 135 Passive gear 136 Drive gear 137 Intermediate gear 138 Water pump 139 Rotary shaft 140 Rotor 141 Outer rotor 142 Inner rotor 143 Outer rotor 144 Discharge outlet 145 Return pipe 145a Ring-shaped protrusion 145b Ring-shaped protrusion 312 / Invention manual (Supplement) / 93-03 / 93100124 33 1240041 146 Mounting plate 147 Bolt 148 Oil guide 149 Guide wall 150 Suction V 15 1 Suction passage 152 Filter and oil 153 passage 154 Cap 155 Spring 156 Suction Π 157 Suction pipe 157a Ring protrusion 157b Ring protrusion 158 Mounting plate 159 Bolt 160 passage 161 Oil filter 162 Spring 163 row Outlet 164 Inspection valve 165 Passage 166 Oil cooler 167 Oil filter 312 / Instruction manual (Supplement) / 93-03 / 93100124 34 1240041 168 Oil passage 1 69 Leak 1710 1720-ring-ring-ring 1730 35312 1740 rings / present specification (s) / the 93 -03/93100124