200400316 玖、發明說明 【發明所屬之技術領域】 本發明係關於一二輪機車用強制空冷式引擎，其在車體 框架上可上下搖動地支持著將汽缸軸線配置爲大致水平之 同時還於左右至少一側面安裝著火星塞的汽缸頭作爲構成 要素的一部分的引擎本體，上述引擎本體中至少汽缸頭， 係利用圍板覆蓋，在與上述汽缸頭之間形成使強制空冷用 的空氣流通的流通路。 【先前技術】 習知，在日本特開平9- 1 445 20號公報所揭示之二輪機車 用強制空冷式引擎中，以面向著車體外側的方式限制著栓 塞帽的壁部係設於圍板。 【發明內容】 (發明所欲解決之問題） 但是，在上述日本特開平9- 1 44520號公報所揭示之二輪 機車用強制空冷式引擎中，因爲在栓塞帽及車體框架中配 置於栓塞帽外側的框架構件間的間隔狹窄的情況，連接於 面向著車體外側的栓塞帽的高壓電線的卷取較難，而必須 以小彎曲半徑來彎曲高壓電線的方式進行配置，因而不易 提升高壓電線的彎曲耐久性。 本發明係鑒於上述情況而提出之發明，其目的在於提供 一二輪機車用強制空冷式引擎，其可增大高壓電線的配置 上的自由度，還可提升高壓電線的彎曲耐久性。 (解決問題之手段） 6 312/發明說明書(補件)/92-06/92107265 200400316 爲達成上述目的，申請專利範圍第1項之發明，係在車 體框架上可上下搖動地支持著將汽缸軸線配置爲大致水平 之同時還於左右至少一側面安裝著火星塞的汽缸頭作爲構 成要素的一部分的引擎本體，上述引擎本體中至少汽缸 頭’由在與上述汽缸領之間形成使強制空冷用的空氣流通 的流通路之爲圍板所覆蓋的二輪機車用強制空冷式引擎 中，其特徵爲：在上述車體框架具備的左右一對的後框架 構件的一端支持著配置於較上述汽缸頭後方的點火感應 圏，一端連設於該點火感應圈的高壓電線的另一端，係從 較連接於上述點火栓塞的栓塞帽的更爲前方向著後方呈略 U字狀折返而連接於該栓塞帽。 根據申請專利範圍第1項之發明的構成，連接於栓塞帽 之高壓電線，成爲從該栓塞帽向著前方延伸，即使栓塞帽 與車體框架中配置於栓塞帽的外側的框架構件間的間隔變 窄，仍可避免與車體框架的干涉，而可增大配置高壓電線 的自由度，同時，較大地設定高壓電線的彎曲半徑，可提 升高壓電線的耐久性。 此外，申請專利範圍第2項之發明，係加上上述申請專 利範圍第1項之發明的構成，其特徵爲：上述圍板具備以 協動且覆蓋汽缸頭的方式，而相互結合的上下一對的上部 及下部罩體構件，嵌合上述栓塞帽的嵌合孔，係形成於上 述兩罩體構件的配合面間，上部罩體構件上一體設置著從 上面覆蓋嵌入上述嵌合孔的上述栓塞帽的嵌合部的庇護 部，利用來自上述高壓電線作用的彈性力而對於火星塞的 7 312/發明說明書(補件V92-06/92107265 200400316 軸線周圍一端增勢的上述栓塞帽，以對抗上述彈性力而承 接著栓塞帽的方式頂接、繫合於上述庇護部上形成的止旋 定位部，根據如上述的構成，栓塞帽係利用來自高壓電線 作用的彈性力頂接、繫合於庇護部上形成的止旋定位部， 因此，可防止在引擎運轉中栓塞帽繞火星塞之軸線周圍旋 轉，藉此，以防止高壓電線的振動’可有效防止該高壓電 線與其他零件的接觸。而且，藉由庇護部從上面覆蓋著栓 塞帽的嵌入嵌合孔的嵌合部，因此，可使得防止碰觸來自 較引擎本體更爲上面的構件上而掉落的泥水等不致附著於 高壓電線及栓塞帽的連接部。 此外，申請專利範圍第3項之發明，係加上上述申請專 利範圍第2項之發明的構成，其特徵爲：保持連接上述栓 塞帽的高壓電線的夾具，係安裝於連續上述庇護部而形成 於上部罩體構件的夾具安裝座上，根據如上述的構成，利 用在栓塞帽附近保持著高壓電線，即可更爲有效地防止高 壓電線的振動，此外，藉由夾具安裝座可增加庇護部的強 度。 【實施方式】 以下，參照所附圖式所示本發明之一實施例，說明本發 明之實施形態。 圖1〜圖17爲顯示本發明之一實施例者，圖1爲摩托車 型二輪機車的側視圖，圖2爲省略車體罩殻及收納箱的狀 態時的摩托車型二輪機車的中間部的立體圖，圖3爲沿著 圖1中之3 - 3線所作的放大剖面圖，圖4爲沿著圖3中之 8 312/發明說明書(補件)/92-06/92107265 200400316 箭頭4所作的箭視圖，圖5爲沿著圖3中之箭頭5所作的 箭視圖，圖6爲沿著圖3中之6-6線所作的剖面圖’圖7 爲從汽缸頭側看頭蓋時的圖，圖8爲沿著圖7中之8 —8線 所作的剖面圖，圖9爲沿著圖6中之9 - 9線所作的放大剖 面圖，圖1 〇爲沿著圖9中之1 0 - 1 0線所作的剖面圖’圖 1 1爲沿著圖4中之1 1 -1 1線所作的剖面圖，圖1 2爲沿著 圖5中之1 2 - 1 2線所作的放大剖面圖，圖1 3爲沿著圖5 中之13-13線所作的剖面圖，圖14爲沿著圖2中之Μ-14 線所作的放大剖面圖，圖1 5爲沿著圖1 4中之1 5 -1 5線所 作的剖面圖，圖1 6爲沿著圖丨4中之1 6 -1 6線所作的剖面 圖，圖1 7爲沿著圖1 4中之1 7 -1 7線所作的剖面圖。 首先，於圖1及圖2中，摩托車型二輪機車之車體框架 25包括：前端固接於頭管26的主架管27、呈直角固接於 該主架管2 7的後端的橫跨管2 8、及前端分別連設於橫跨 管2 8的兩端部的左右一對作爲後框架構件的後架管2 9、 30 ° 主架管27係一體連設著從頭管26向著後下方傾斜的下 降框架部2 7 a、及從下降框架部2 7 a的後端呈大致水平向 著後方延伸的低框架部2 7b而構成。此外，左右一對的後 架管2 9、3 0，係一體連設著從上述橫跨管2 8的兩端部向 著後上方延伸的斜升框架部29a、30a，及從斜升框架部 2 9 a、3 0 a的後端呈大致水平向著後方延伸、同時以後端部 開口相互面對的方式在水平面內彎曲的上部框架部2 9 b、 30b而成。 9 312/發明說明補件)/92-06/92107265 200400316 上述頭管2 6上支持著可操縱方向的跨於前輪WF上的前 叉3 1，前叉3 1的上端連結著方向操縱把手3 2。 在車體框架25的兩後架管29、30的前部’介由連桿機 構33支持著可上下搖動的動力單元p的前部，配置於該 動力單元P的後部右側的後輪WR係軸支於動力單元P的 後部。 圖3〜圖6中，動力單元P係由配置於後輪WR的前方 的強制空冷式單氣筒的4行程的引擎E、及設於該引擎4 及上述後輪WR間的無段變速機Μ所構成。 引擎Ε之引擎本體34係爲具備曲柄箱35、結合於曲柄 箱3 5的汽缸塊3 6.、在曲柄箱3 5的相反側與汽缸塊3 6結 合的汽缸頭3 7及在汽缸塊3 6的相反側與汽缸頭3 7結合的 頭蓋3 8，且配置於車體框架2 5的兩後架管2 9、3 0間者， 汽缸頭3 7係配置於兩後架管29、3 0前部的斜升框架部 2 9 a、3 0 a的下部間。 汽缸塊3 6係爲以沿著設於汽缸塊3 6的汽缸腔3 9的軸 線、亦即汽缸軸線C沿著二輪機車的前後方向成略微前上 傾而成爲大致水平的方式所配置者，在汽缸頭3 7及可滑動 自如地嵌合於上述汽缸腔3 9的活塞40之間形成燃燒室 41。此外，活塞40係介由連桿42及曲柄銷43，連結於具 有與後輪WR的旋轉軸線平行的旋轉軸線的曲柄軸44。 曲柄軸44係由含有上述汽缸軸線C、同時與該曲柄軸 44的軸線垂直的平面所結合的一對箱體部35a、3 5b所構 成的曲柄箱3 5支持爲可旋轉自如，曲柄軸44係於一端的 10 312/發明說明書(補件)/92-06/92107265 200400316 箱構件35a及曲柄軸44之間介裝著第1滾珠軸承45，及 在另一端的箱構件35b及曲柄軸44之間介裝著第2滾珠軸 承4 6。 在汽缸頭3 7的上部側面設有可連通上述燃燒室4 1的吸 氣口 47，在汽缸頭3 7的下部側面設有可連通上述燃燒室 41的排氣口 48。分別用以開閉吸氣口 47及排氣口 48的吸 氣閥49及排氣閥5 0，係以在與曲柄軸44的旋轉軸線垂直 的平面的投影圖上排列爲略V字狀的方式配設於汽缸頭 37上，在關閉吸氣口 47及排氣口 48的方向分別受到加勢 能。此外，面向著燃燒室4 1的火星塞5 1係安裝於汽缸頭 3 7上的左右至少一端側，在本實施例中係以向著二輪機車 的行進方向前方的狀態安裝在右側的側面。 在汽缸頭3 7及頭蓋3 8之間，收容著開閉驅動上述吸氣 閥49及排氣閥50的動閥機構52，該動閥機構52包括： 具有與曲柄軸44的軸線平行的軸線且可旋轉自如地被支 持於汽缸頭37、同時具有吸氣用及排氣用凸輪54、53的 凸輪軸5 5 ;具有與凸輪軸5 5平行的軸線，且被支持於汽 缸頭3 7的吸氣側及排氣側的搖軸5 6、5 7 ;以隨動於上述 吸氣用凸輪5 4而驅動吸氣閥49的方式可搖動自如地支持 於吸氣側搖軸5 6的吸氣側搖臂5 8 ;及以隨動於上述排氣 用凸輪5 3而開閉驅動排氣閥5 0的方式可搖動自如地支持 於排氣側搖軸5 7的排氣側搖臂5 9。 於凸輪軸55的一端部固定著被動鏈輪60。另一方面， 在曲柄軸44上較第2滾珠軸承46的外端側，在對應於上 11 312/發明說明書(補件)/92-06/92107265 200400316 述被動鏈輪6 0的位置固定著驅動鏈輪6 1，驅動及被動鏈 輪61、60上卷掛著無端的凸輪鏈條62，凸輪鏈條62係被 收納爲可沿著通過汽缸塊3 6、汽缸頭3 7及頭蓋3 8而形成 的收納室6 3內f了走。藉由如此的驅動鏈輪6 1、被動鏈輪 6 0及凸輪鏈條6 2，以曲柄軸4 4的旋轉數的一半旋轉數旋 轉驅動著凸輪軸5 5。 在較第1滾珠軸承45的外端側，曲柄軸44上固定著驅 動齒輪64，以從形成於曲柄箱3 5內的下部的潤滑油儲積 部65介由潤滑油過濾器79吸起潤滑油的方式安裝於曲柄 箱35的油泵66，係藉由上述驅動齒輪64所驅動。 從該油泵66吐出的潤滑油的一部分係用於潤滑動閥機 構52者，在曲柄箱35、汽缸塊36、汽缸頭37及頭蓋38 設有將來自油泵66的潤滑油導向動閥機構52用的潤滑油 供給路67。而且，在汽缸頭37，且在較排氣口 48更接近 於吸氣口 47的位置配置著潤滑油供給路67，本實施例中， 在與曲柄軸44的軸線垂直的平面的投影圖上，在與吸氣口 47交叉的位置配置著潤滑油供給路67。 一倂參照圖7及圖8，上述潤滑油供給路67的下游端 部，係由以將來自汽缸頭3 7側的潤滑油供給一端的方式設 於頭蓋3 8的與汽缸頭3 7的結合面的流通溝6 8，及連通該 流通溝68的另一端且設於頭蓋38的側壁的有底流通孔69 所構成，連通流通孔69的內端部的噴出孔70，係以向著 動閥機構5 2噴出潤滑油的方式設於頭蓋3 8的側壁內面。 此外，在頭蓋3 8設有連通上述流通溝6 8的一端的有底 12 312/發明說明書(補件)/92-06/92107265 200400316 檢測孔7 1，同時，在對應於該檢測孔7 1的位置一 著從頭蓋3 8的外面向著外側突出的安裝轂72，該 72上以使檢測元件部73a突入上述檢測孔7 1的方 著溫度檢測器73。也就是說，溫度檢測器73係以 元件部73a面向著潤滑油供給路67的方式安裝於引 3 4的頭蓋3 8上。 注意圖3，在較上述驅動齒輪64的外端側，配設 固定於曲柄箱35上的定子74、以圍繞著該定子74 固定於曲柄軸44上的外部轉子75的發電機76，在 電機76的外端，曲柄軸44上固定著風扇77。該屑 係由一體設於由多個例如藉4個螺栓78、78···固緊 機76的外部轉子75的基部77a的外周部的多個葉 7 7b···所構成者。 引擎本體34中至少汽缸塊36及汽缸頭37、本實 曲柄箱3 5的局部、汽缸塊3 6、汽缸頭3 7係由圍枝 覆蓋，將引擎本體34及圍板82間形成的流通路8 從風扇7 7吐出的強制空冷用的空氣。而且，在汽S 及汽缸頭3 7的外面，爲了可進行藉由流過上述流； 的冷卻空氣的有效冷卻，分別突設著多個冷卻鰭片 36a··· 、37a··· 〇 上述圍板82係由以協動且覆蓋汽缸塊36及汽缸 的方式相互結合的上下一對的上部及下部罩體構件 及覆蓋曲柄箱3 5的局部且結合於上述兩罩體構件 的風扇罩8 5所構成，上述上部罩體構件8 3、下部 312/發明說明書(補件)/92-06/92107265 體突設 安裝轂 式安裝 使檢測 擎本體 著具備 的方式 較該發 扇77 於發電 片 77b、 施例中 Z 82所 1，流通 江塊36 恿路81 頭37 83、84 83、84 罩體構 13 200400316 件84及風扇罩8 5，係分別由合成樹脂所形成。 上部罩體構件83上突設著從與下部罩體構件84的接合 面突出於下部罩體構件8 4側的多個繫合爪8 7…，在下部 罩體構件84設有彈性繫合著上述各繫合爪87···的繫止部 8 8…。此外，在上部及下部罩體構件8 3、8 4分別一體設置 著由接合面86相互頂接的多個被固緊部89···、90···，相 互頂接的被固緊部89··.、90…係由螺絲零件91…相互固 緊。 如此，對於繫合爪87…的繫止部88…的彈性繫合，及 藉由被固緊部89···、90···的螺絲零件91…的固緊，上部及 下部罩體構件83、84相互結合，於是，頭蓋38從上部及 下部罩體構件8 3、8 4向著前方側突出。 風扇罩85係以覆蓋曲柄箱35的局部的箱構件35a及風 扇7 7的方式固緊於箱構件3 5 a上者，且藉由多個螺絲零件 92…固緊於上述上部及下部罩體構件83、84。 該風扇罩8 5上，以對應於風扇7 7的外側的方式設置形 成向著上述風扇77側而從外部吸引空氣用的吸引口 93的 吸引筒94，且在吸引口 93上設有散熱窗95。 該散熱窗95係由與吸引筒94同心配置的多個、例如爲 5個的環部95 a〜95d，及呈放射狀延伸且連結吸引筒94 及各環部9 5 a〜9 5 d間的多個連結部9 5 e…所構成，在對應 於此等連結部9 5 e…之1個位置，在風扇罩8 5的外面標示 著對準曲柄軸44的相位用的例如爲三角形狀的定時標誌 9 6。該定時標誌9 6係爲如對準點火用的時間用者，利用將 14 312/發明說明書(補件)/92-06/92107265 200400316 風扇77固定於曲柄軸44用的多個、例如爲4個螺 中的一個，定位於上述散熱窗95中對應於定時標 連結部9 5 e，即可容易進行點火用的時間的相位配 又，上述定時標誌96不僅用於點火用之時間對 且還可用於TDC及BDC的時間對準，此外，動閥 在構成爲可改變吸氣閥49及排氣閥50的至少一戈 特性的情況’也可用於其作® J特性3女變的時間對準 一倂參照圖9及圖1 0 ’在汽缸頭3 7的上部側面 吸氣口 47開口的平坦的安裝面97，該安裝面97 i 絕緣體99而固緊著輸入管98的下端。 輸入管9 8的下端一體設有凸緣部9 8 a，具有連選 47的吸氣孔1〇〇的絕緣體99及上述安裝面97，領 具有對應於上述凸緣部9 8 a的形狀。 在絕緣體99的兩面安裝著呈無接縫狀包圍上述 100的墊圈101、102，其中，在絕緣體99及安裝 安裝著一邊的墊圈1〇1，而在絕緣體99及上述凸| 間安裝著墊圈102。而且，絕緣體99的厚度T係敷 安裝面97及圍板82之上部罩體構件83間的間隔 在吸氣口 47的兩側，其安裝面97上設置著有JI 孔1 〇 3、1 〇 3，插穿於凸緣部9 8 a及絕緣體9 9的螺 1〇4被繋合於上述各螺絲孔1〇3、1〇3，藉由拴緊螺 104即可介由絕緣體99將輸入管98固緊於安裝面 但是，在覆蓋汽缸頭3 7的圍板8 2中，上部罩體 上設有嵌合、定位上述絕緣體9 9用的開口部1 〇 5。 栓78… 誌96的 合。 準，而 機構52 f的作動 | 〇 設有使 1介裝著 !吸氣口 >形成爲 吸氣孔 面97間 彖部9 8 a 匕定爲較 S大。 E的螺絲 栓 104、 栓 104、 97 〇 構件8 3 該開口 312/發明說明書(補件)/92-06/92107265 15 200400316 部1 0 5如圖1 〇所示係形成爲較絕緣體9 9大，在該開口部 1 〇 5的局部側面及絕緣體9 9的局部側面間，形成將流通經 過流通路8 1而來的冷卻用空氣排出至外部用的排風口 106。 上述輸入管98的上游端係介由連接軟管107而連接配 置於較該輸入管98後側的氣化器1 〇8的下游端，氣化器 108的上游端係介由連接管1〇9而連接配置於後輪WR的 左側面的空氣濾淨器1 1 0。 圖1 1中，氣化器1 〇 8上附設有基於上述溫度檢測器7 3 的檢測値而被通電控制的二輪機車起動器1 1 1，該二輪機 車起動器1 1 1係以迂迴具備氣化器1 0 8的節流閥（未圖示） 的方式，且開閉設於氣化器1 08的氣化器本體1 1 2的起動 用混合氣通路1 1 3的中間處的方式安裝於氣化器本體1 1 2 上。 在上述起動用混合氣通路1 1 3，以介設於較二輪機車起 動器1 1 1更上游側的部分的方式，在氣化器本體1 1 2上固 定著放氣管114，在氣化器本體112的下部固定著上部由 該放氣管1 1 4的下部突入的燃料噴嘴1 1 5。此外，在氣化 器本體1 1 2的下部固定著儲積燃料用的燃料箱1 1 6，上述 燃料噴嘴1 1 5的下部係突入燃料箱1 1 6內的燃料中。 二輪機車起動器111具有可進退自如地插入較放氣管 1 1 4的下游側且設於起動用混合氣通路1 1 3的通路中段部 的噴嘴1 1 7的針閥1 1 8，針閥1 1 8之在噴嘴1 1 7內的位置 係藉由二輪機車起動器11 1的通電控制所決定，藉以決定 16 312/發明說明書(補件)/92-06/92107265 200400316 流通經過起動用混合氣通路11 3的起動用混合氣的量 在構成圍板82之局部的上部及下部罩體構件83、 配合面8 6間形成嵌合孔1 2 0。而且，連接火星塞5 1 塞帽1 2 1在嵌合孔1 2 0的周圍具有頂接上部及下部罩 件8 3、8 4的外面的鍔部1 2 1 a且嵌合於上述嵌合孔1 此外，上述上部及下部罩體構件83、84中，上部j 構件83上一體設置著從上面覆蓋嵌入嵌合孔120的栓 121的嵌合部的庇護部122，在該庇護部122的前端咅丨 圖1 2所示，形成頂接且繫合栓塞帽1 2 1以便阻止該栓 1 2 1繞火星塞5 1之軸線周圍旋轉的止旋定位部1 2 2 a ' 上述庇護部122係爲以從上面覆蓋著形成爲從栓塞 1 2 1向著前方將連接於栓塞帽1 2 1的高壓電線1 23的 分延伸的姿勢的栓塞帽121的嵌入嵌合孔120的嵌合 方式而形成者，止旋定位部122a係使利用來自高壓f 1 2 3作用的彈性力而對於火星塞5 1的軸線周圍一端增 栓塞帽1 2 1以對抗並接受上述彈性力的方式形成於庇 122 〇 一倂參照圖1 3，上部罩體構件8 3上一體形成連續 庇護部1 2 2而連設的夾具安裝座1 2 5，利用彈性安裝 夾具安裝座125上的夾具124,保持連設於上述栓塞巾| 的高壓電線123。 另外，引擎本體34係以將汽缸頭37配置於左右一 後架管29、30前部的斜升框架部29a、30a的下部間 式而支持於車體框架25上，上述栓塞帽121也配置於 312/發明說明書(補件)/92-06/92107265 84的 之栓 體構 0卜 驛體 塞帽 5，如 塞帽 〇 帽 一部 部的 I線 勢的 護部 上述 於該 | 121 對的 的方 兩斜 17 200400316 升框架部2 9 a、3 0 a的下部間，在兩斜升框架部2 9 a、3 0 a 一端的右側的斜升框架部3 0 a的上部，如圖2所明示’支 持著點火感應圈126。 一端連設於點火感應圈1 2 6的高壓電線1 2 3的另一端’ 係從較繫合於止旋定位部1 2 2 a的上述栓塞帽1 2 1的前方向 著後方呈略U字狀折返而連接於栓塞帽1 2 1。 一倂參照圖1 4〜圖1 7，上述圍板8 2的上部罩體構件8 3 上一體設有，前端部具有相互面對著且向著相互接近側突 出的繫合突部1 2 8 a、1 2 8 a，同時，從上部罩體構件8 3的 外面豎起的一對鉤128、128;及連結於上述兩鉤128、128 間，同時，相互面對著且從上部罩體構件83的外面豎起的 一對連結壁129、130，同時還設有由此等鉤128、128及 連結壁1 2 9、1 3 0所包圍的直角四邊形的透孔1 3 1。 在兩鉤128、128之繫合突部128a、128a及上述兩連結 壁1 2 9、1 3 0之間，夾著相互重疊的同時被壓入上述兩鉤 1 2 8、1 2 8間的多個可彎曲長零件，本實施例中，由兩連結 壁1 2 9、1 3 0支持的屬內側的可彎曲長零件的電纜線1 3 3， 及外面接觸著上述兩繫合突部128a、128a的屬外側的可彎 曲長零件的管134，被夾著在繫合突部128a、128a及兩連 結壁1 2 9、1 3 0之間。 上述電纜線1 3 3具有軟質的塑膠皮層且連接於溫度檢測 器73，此外，由硬質的彈性材構成的上述管1 34，係用以 引導通氣氣體而連接於頭蓋38。 而且，上述鉤128係由其基端部的全長連設於上部罩體 18 312/發明說明書(補件)/92-06/92107265 200400316 構件8 3的基板部1 2 8 b ;及在沿著電纜線1 3 3及管1 3 4的 長度方向隔開間隔的多個部位、例如2個部位連設於上述 基板部1 2 8 b，同時，前端部突設著上述繋合突部1 2 8 a的 多個、例如爲2個的分歧板部1 2 8 c、1 2 8 c所構成，在兩連 結壁129、130之間支持電纜線133的補強壁132，係在各 分歧板部1 2 8 c、1 2 8 c間連設於兩鉤1 2 8、1 2 8之間。 在未由上述圍板8 2所覆蓋的汽缸頭3 7的下部側面，以 將上游端連設於排氣口 4 8的方式連接著排氣管1 1 8，配設 於後輪W R的右側的排氣消音器1 1 9則連接著排氣管1 1 8 的下游端。 尤其注意圖3及圖4,在曲柄箱35上以向著二輪機車的 行進方向前方的狀態連接著由後輪WR的左側延伸出的傳 動箱1 3 6。該傳動箱1 3 6係由一體連設於上述曲柄箱3 5的 箱構件35b且延設於後方的箱主體137;在與該箱主體137 之間形成第1傳動室1 40且從左側固緊於箱主體1 3 7的左 側蓋1 3 8 ;及在與該箱主體1 3 7之間形成第2傳動室1 4 1 且固緊於箱主體1 3 7的右側後部的右側蓋1 3 9所構成。 在傳動箱1 3 6之箱主體1 3 7的前部，以配置於引擎E的 汽缸塊3 6的側面的方式突設著支持腕部1 42，該支持腕部 1 4 2係介由連桿機構3 3而可搖動地被支持於車體框架2 5 上。 後輪WR的車軸1 4 3係由傳動箱1 3 6之箱主體1 3 7的後 部及右側蓋1 3 9可旋轉自如地支持著。此外，如圖1所示， 在箱主體137的後部及車體框架25之後架管29的斜升框 19 312/發明說明書(補件)/92-06/92107265 200400316 架部2 9 a之間設有後緩衝器1 4 4。 無段變速機Μ係爲被收納於第1傳動室1 40之三角皮帶 式者，在無段變速機Μ及車軸1 43之間設置著減速齒輪組 145 ° 無段變速機Μ具備，在第2滾珠軸承46的外側連結於 曲柄軸4 4的端部的驅動側傳動皮帶輪1 4 6 ;具有與曲柄軸 44平行的軸線且介由離心離合器1 4 8而安裝於由箱主體 1 3 7的後部及右側蓋1 3 9所可旋轉自如地支持的被動軸1 47 上的被動側傳動皮帶輪1 49 ;及繞掛於兩傳動皮帶輪1 46、 149上的無接端的三角皮帶150。 驅動側傳動皮帶輪1 46係由固定於曲柄軸44上的固定 皮帶輪半體146a;及可滑動地安裝於曲柄軸44上的可動 皮帶輪半體146b所構成。在兩皮帶輪半體146a、14 6b之 間形成V字狀的環狀溝1 5 1，該環狀溝1 5 1內插入有三角 皮帶15〇。此外，在可動皮帶輪半體146b的背面側，在曲 柄軸44上固裝著斜面板152，在可動皮帶輪半體14 6b及 斜面板1 5 2之間呈浮動狀態收容著多個重量輥1 5 3。當曲 柄軸44的旋轉數增大時，受到離心力作用的重量輥1 5 3 向著曲柄軸44的半徑方向外側移動，使得可動皮帶輪半體 14 6b接近於固定皮帶輪半體146a。藉此，三角皮帶150 之對於兩皮帶輪半體146a、146b的接觸半徑增大。 另一方面，被動側傳動皮帶輪1 49具備，介由離心離合 器148連結於被動軸147，且由被動軸147支持爲可旋轉 自如的支持筒154; —體形成於該支持筒154的固定皮帶 20 312/發明說明書(補件)/92-06/92107265 200400316 輪半體149a ;及可相對於該固定皮帶輪半體149a作接近 或離開動作，且被支持於支持筒1 5 4，同時，在向著接近 固定皮帶輪半體149a的方向賦予著彈性勢能的可動皮帶 輪半體149b，在形成於兩皮帶輪半體149a、149b間的V 字狀的環狀溝155內插入有三角皮帶150。而且，可動皮 帶輪半體149b隨著三角皮帶150對於驅動側傳動皮帶輪 146的接觸半徑的增大，可動皮帶輪半體149b以該三角皮 帶150對於從動側傳動皮帶輪149的接觸半徑減小的方式 沿軸方向移動，藉此，在曲柄軸4 4及被動軸1 4 7間進行響 應曲柄軸4 4的旋轉的無段變速。 在傳動箱1 3 6之左側蓋1 3 8可旋轉自如地支持著反衝軸 156，該反衝軸156的外端設有腳蹬起動踏板157(參照圖 1 )。此外，在上述左側蓋1 3 8的內側，在反衝軸1 5 6及曲 柄軸44間設有可將響應腳蹬起動踏板1 57的踏入操作的反 衝軸156的動力傳輸給曲柄軸44的反衝式起動裝置158。 減速齒輪組94係設於被動軸147及車軸143之間且收 容於第2傳動室141內，無段變速機Μ之被動軸147的旋 轉動力由減速齒輪組9 4在減速後被傳輸給後輪w R的車軸 143。 但是，在車體框架2 5的兩後架管2 9、3 0的前部間，以 配置於引擎Ε的上面的方式支持著可收納安全帽等的收納 箱160，在兩後架管29、30的後部間支持著燃料箱161。 此外，在兩後架管2 9、3 0中左側的後架管2 9的上部框 架部29b的前部支持著可淨化供給引擎Ε的排氣口 48的 21 312/發明說明書(補件)/92-06/92107265 200400316 二次空氣用的二次空氣用空氣濾淨器162。該二次空氣用 空氣濾淨器1 6 2的吸入口上連接著吸氣管1 6 3的下游端’ 該吸氣管163的下游端係插入兩後架管29、30中右側的後 架管3 0的上部框架部3 Ob的後端部。 設於引擎E及二次空氣用空氣濾淨器162間的二次空氣 控制閥164,係由安裝於左側的後架管29的斜升框架部29a 的撐架1 6 5所支持。 此外，在左側的後架管2 9的斜升框架部2 9 a的下部設有 連通於該斜升框架部29a內的連接管部166 ’而用以從動 力單元P的無段變速機Μ內導出冷卻空氣用的通風管167 則連接於上述連接管部1 6 6。 車體框架25,係由合成樹脂製車體殻罩168所覆蓋，該 車體殼罩168具備：遮覆駕駛者的腳前方的護腳罩169; 用以放置騎乘者的腳部而連設於護腳罩1 69的下部的踏板 1 7 0 ;及連設於踏板1 7 0且從兩側覆蓋車體後部的側罩1 7 1。 側罩1 7 1上設有可從上面開閉收納箱1 60及燃料箱1 6 1 的座椅1 7 2。 以下，說明本實施例之作用，在引擎本體34之曲柄箱 35上，安裝著從曲柄箱35內的潤滑油儲積部65吸起潤滑 油的油泵66，而引導用以潤滑動閥機構52的潤滑油的潤 滑油供給通路67，係連通油泵66而設於曲柄箱3 5、汽缸 塊3 6、汽缸頭3 7及頭蓋3 8上，溫度檢測器7 3係以其檢 測元件部73a面向著潤滑油供給通路67的狀態安裝於引擎 本體34上。 22 31万發明說明書(補件)/92-06/92107265 200400316 在引導潤滑動閥機構5 2用而從油泵6 6吐出的潤滑油的 潤滑油供給通路67之中，只要引擎進行運轉則與運轉狀態 及姿勢無關充滿著潤滑油，如上所述，藉由將溫度檢測器 73的檢測元件部73a配置爲面向著該潤滑油供給通路67, 即可極爲不易受到引擎的運轉狀態及姿勢的變化的影響， 可經常良好且迅速地檢測出引擎溫度，而且，就溫度檢測 器7 3來說不需要檢測潤滑油溫度的其他複雜的構造。 而且，因爲將潤滑油供給通路67配置於汽缸頭37中較 排氣口 48更爲接近吸氣口 47的附近位置，因此，極爲不 易受到來自引擎本體3 4的外表面部的因環境引起的散熱 的影響，即使在引擎E起動後的低旋轉（空轉狀態）時，仍 可良好地檢測出引擎溫度，可經常良好且迅速地檢測出引 擎溫度。 因爲引擎E係爲以在上述汽缸塊36及汽缸頭37上設置 著空冷用之冷卻繪片3 6 a…、3 7 a…的方式構成爲上強制空 冷式者，且，溫度檢測器7 3係安裝於未設置空冷風扇的頭 蓋38上，因此，即不會受到冷卻鰭片36a···、3 7a…的干 擾而可正確檢測引擎溫度，而且，安裝溫度檢測器7 3用的 構造也變得簡單。 此外，在連接上述吸氣口 47的氣化器108上，安裝著 用以開閉設於該氣化器1〇8的起動用混合氣通路113的基 於溫度檢測器7 3的檢測値進行通電控制的二輪機車起動 器1 1 1，因此，基於由溫度檢測器7 3正確檢測出的引擎溫 度，將起動時供給引擎E的混合氣最合適化，從而可提升 23 312/發明說明書(補件)/92-06/92107265 200400316 引擎E的暖機性能。 此外，汽缸塊3 6及汽缸頭3 7，係由使強制空冷用的空 氣流通的流通路8 1形成於汽缸塊3 6及汽缸頭3 7之間的圍 板8 2所覆蓋，藉由以不受強制性送風的冷卻風的影響的方 式而於頭蓋3 8安裝著溫度檢測器7 3，即使爲強制空冷引 擎之同時，還可正確檢測引擎溫度。 雖於汽缸頭3 7之上部側面，設有使吸氣口 4 7開口的平 坦的安裝面97，該安裝面97上介由絕緣體99而固緊著輸 入管98，但是，在圍板82的上部罩體構件83設有嵌合、 定位絕緣體9 9的開口部1 0 5。 據此，利用嵌合於開口部1 0 5使得絕緣體9 9被定位保 持於圍板82，而且，絕緣體99發揮引導螺合於汽缸頭37 的安裝面97所設的螺絲孔103…的螺栓104…的功能，因 此，可容易進行螺栓1 〇 4…的對於螺絲孔1 〇 3…的螺合、固 緊，從而可提高組裝性。 此外，因爲於合成樹脂製的上部罩體構件83上所設的 開口部1 05的局部內側面及絕緣體99的局部側面間形成排 風口 1 0 6，因此，利用從排風口 1 0 6排出的溫風用以暖和 輸入管9 8，可提升暖機性能。而且，將上部罩體構件8 3 的成型時形成開口部1 〇 5用的模具部分，以包含對應於上 述排風口 1 06的部分的方式設置爲較爲大型化以便提高強 度，即可，提高模具的壽命度。 又，由於將絕緣體的厚度T係設定爲較安裝面97及圍 板8 2間的間隔S大，因此，以壓抵於安裝面9 7的方式將 24 312/發明說明書(補件)/92-06/92107265 200400316 絕緣體9 9嵌合於開口部1 〇 5，即可於組裝時防止絕緣體9 9 從圍板82脫落，可進一步提升組裝性。 圍板82係爲具備以協動且覆蓋汽缸塊36及汽缸頭37 的方式，而相互結合的上下一對的上部及下部罩體構件 8 3、8 4者，嵌合連接於汽缸頭3 7的右側面安裝的火星塞 5 1的栓塞帽1 2 1用的嵌合孔1 20，係形成於兩罩體構件 8 3、8 4的配合面8 6間。而且，上部罩體構件8 3上一體設 置著從上面覆蓋嵌入嵌合孔120的栓塞帽121的嵌合部的 庇護部122，利用來自高壓電線123作用的彈性力而對於 火星塞5 1的軸線周圍一端增勢的栓塞帽1 2 1，以對抗上述 彈性力而承受著栓塞帽1 2 1的方式頂接、繫合於庇護部1 22 上形成的止旋定位部122a。 據此，連接於高壓電線 1 2 3之至少一部分，成爲從該栓 塞帽121向著前方延伸，即使栓塞帽121與車體框架25 中配置於栓塞帽1 2 1的外側的後架管3 0間的間隔變窄，仍 可避免與車體框架25的干涉，而可增大配置高壓電線123 的自由度，同時，較大地設定高壓電線1 2 3的彎曲半徑， 可提升高壓電線1 2 3的耐久性。 此外，栓塞帽1 2 1係利用來自高壓電線1 2 3作用的彈性 力頂接、繫合於庇護部122上形成的止旋定位部122a，因 此，可防止在引擎運轉中栓塞帽1 2 1繞火星塞5 1之軸線周 圍旋轉，藉此，以防止高壓電線1 23的振動，可有效防止 該高壓電線1 2 3與其他零件的接觸。 而且，藉由庇護部122從上面覆蓋著栓塞帽121的嵌入 25 3Π/發明說明書(補件)/92-〇6/921〇7265 200400316 嵌合孔1 2 0的嵌合部，因此，可防止碰觸且掉落於比引擎 本體34較爲上面的構件、例如收納箱1 60的泥水等附著於 高壓電線1 23及栓塞帽1 2 1的連接部。 此外，保持高壓電線123的夾具124，係安裝於連續上 述庇護部122而形成於上部罩體構件83的夾具安裝座125 上，因此，以在栓塞帽1 2 1附近保持著高壓電線1 2 3的方 式，即可更爲有效地防止高壓電線1 2 3的振動，此外，藉 由夾具安裝座125可增加庇護部122的強度。 另外，引擎本體34係對應於側視時前部具備後架管29、 30且使汽缸頭37向著後上方傾斜的斜升框架部29a、30a 的下部，而配置於上述兩後架管2 9、3 0之間，同時，可上 下搖動地被支持於車體框架2 5，此外，一端連接於位於較 汽缸頭3 7後方而被支持於上述兩後架管2 9、3 0的一後架 管3 0的點火感應圈1 2 6的高壓電線1 2 3的另一端，係從較 繫合於止旋定位部122a的栓塞帽121的前方向著後方呈略 U字狀折返而連接於該栓塞帽1 2 1。 藉由如此的配置，避免了與車體框架25的干涉，而可 容易卷取高壓電線，從而可更爲確實提升高壓電線1 2 3的 彎曲耐久性。 此外，圍板8 2的上部罩體構件8 3上，一體設有前端部 具有相互面對著且向著相互接近側突出的繋合突部 1 2 8 a、1 2 8 a，同時，從上部罩體構件8 3的外面豎起的一對 夠1 2 8、1 2 8 ;及連結於上述兩鉤1 2 8、1 2 8間，同時，相 互面對著且從上部罩體構件8 3的外面豎起的一對連結壁 26 312/發明說明書(補件)/92-06/92107265 | 129、 200400316 129、130，同時還設有由此等鉤128、128及連結璧 1 3 0所包圍的直角四邊形的透孔1 3 1。 在兩鉤128、128之繫合突部128a、128a及上述 壁129、130之間，夾著相互重疊且被壓入上述兩翁 1 2 8間的電纜線1 3 3及管1 3 4。 據此，在合成樹脂製的上部罩體構件8 3的成型日， 以未採用脫模的簡單模具構造一體形成一對鉤1 2 8 及一對連結壁1 2 9、1 3 0，即使不使用二輪機車所具 部罩體構件8 3以外的零件，仍可由兩鉤12 8、1 2 8 結壁1 2 9、1 3 0穩定支持著電纜線1 3 3及管1 3 4，因 低零件數及組裝作業工時，同時，可將電纜線1 3 3及 穩定支持於上部罩體構件8 3的平坦面。 而且，透孔1 3 1係由相互重疊的電纜線1 3 3及管 覆蓋，在支持著電纜線1 3 3及管1 3 4的狀態則無法 透孔131看見上部罩體構件83內、亦即圍板82內 也就是說，透孔1 3 1係爲由相互疊層的電纜線1 : 1 3 4所覆蓋，利用防止冷卻風從圍板8 2洩漏以穩定 制空冷式引擎E的冷卻性能，同時可於圍板82支f 纜線1 3 3及管1 3 4，而且，可防止冷卻風從透孔1 3 1 因此，以不致噴射灰塵於圍板8 2的外表面側的方式 止外觀性的下降。 上述電纜線1 3 3具有軟質的塑膠皮層且連接於溫 器7 3，此外，上述管1 3 4由硬質的彈性材構成’用 通氣氣體而連接於頭蓋3 8，使電纜線1 3 3外面的塑 312/發明說明書(補件)/92_〇6/921〇7265 兩連結 U 128、 ，，可 、128 備的上 及兩連 而可減 管134 134所 從上述 〇 Π及管 維持強 宇著電 拽漏， 即可防 度檢測 以引導 膠皮層 27 200400316 充分密接於兩連結壁1 2 9、1 3 0，同時，利用於管1 3 4的外 面確實繫合著兩鉤.128、128之前端部的繫合突部128a、 1 2 8 a，即可更爲確實地支持著電纜線1 3 3及管1 3 4。 而且，上述鉤1 2 8係由其基端部的全長連設於上部罩體 構件83的基板部128b ;及在沿著電纜線133及管134的 長度方向隔開間隔的多個部位、例如2個部位連設於上述 基板部128b，同時，於前端部突設著上述繋合突部128a 的多個、例如爲2個的分歧板部1 2 8 c、1 2 8 c所構成，在兩 連結壁1 2 9、1 3 0之間支持電纜線1 3 3的補強壁1 3 2，係在 各分歧板部1 2 8 c、1 2 8 c間連設於兩鉤1 2 8、1 2 8之間。 爲此，以藉由補強壁1 3 2支持內側的電纜線1 3 3的方 式，即可更爲穩定地支持著電纜線1 3 3及管1 3 4，同時， 藉由補強壁1 3 2可增加兩鉤1 2 8、1 2 8的強度。 以上，說明了本發明之實施形態，但是，本發明並不限 於上述實施形態，只要未超出申請專利範圍所記載之本發 明的範圍，即可作各式各樣的設計變更。 (發明效果） 如上述，根據申請專利範圍第1項的發明，高壓電線之 至少一部分，成爲從栓塞帽向著前方延伸，即使栓塞帽與 車體框架中配置於栓塞帽的外側的框架構件間的間隔變 窄，仍可避免與車體框架的干涉，而可增大配置高壓電線 的自由度，同時，較大地設定高壓電線的彎曲半徑，可提 升高壓電線的耐久性。此外，栓塞帽係利用頂接、繫合於 止旋定位部，因此，可防止在引擎運轉中栓塞帽繞火星塞 28 3 U/發明說明書(補件)/92-06/92107265 200400316 之軸線周圍旋轉，藉此，以防止高壓電線的振動，可有效 防止該高壓電線與其他零件的接觸。而且，藉由庇護部從 上面覆蓋著栓塞帽的嵌入嵌合孔的嵌合部，因此，可使碰 觸於較引擎本體更爲上面的構件而掉落的泥水等不致附著 於高壓電線及栓塞帽的連接部。 此外，根據申請專利範圍第2項之發明，利用在栓塞帽 附近藉由夾具保持著高壓電線，即可更爲有效地防止高壓 電線的振動，此外，藉由夾具安裝座可增加庇護部的強度。 此外，根據申請專利範圍第3項的發明，可避免與車體 框架的干涉，而可容易卷取高壓電線，從而可更爲確實提 升高壓電線的彎曲耐久性。 【圖式簡單說明】 圖1爲摩托車型二輪機車的側視圖。 圖2爲省略車體罩殻及收納箱的狀態時的摩托車型二輪 機車的中間部的立體圖。 圖3爲沿著圖1中之3 - 3線所作的放大剖面圖。 圖4爲沿著圖3中之箭頭4所作的箭視圖。 圖5爲沿著圖3中之箭頭5所作的箭視圖。 圖6爲沿著圖3中之6 - 6線所作的剖面圖。 圖7爲從汽缸頭側看頭蓋時的圖。 圖8爲沿著圖7中之8 - 8線所作的剖面圖。 圖9爲沿著圖6中之9-9線所作的放大剖面圖。 圖1 〇爲沿著圖9中之1 0-1 0線所作的剖面圖。 圖1 1爲沿著圖4中之1 1 -1 1線所作的剖面圖。 312/發明說明書(補件)/92-06/92107265 200400316 圖1 2爲沿著圖5中之1 2- 1 2線所作的放大剖面圖。 圖1 3爲沿著圖5中之1 3 -1 3線所作的剖面圖。 圖1 4爲沿著圖2中之1 4-1 4線所作的放大剖面圖。 圖1 5爲沿著圖1 4中之1 5 - 1 5線所作的剖面圖。 圖1 6爲沿著圖1 4中之1 6 - 1 6線所作的剖面圖。 圖1 7爲沿著圖1 4中之1 7 -1 7線所作的剖面圖。 (元件符號說明） C 汽缸軸線 E 引擎 _ Μ 無段變速機 Ρ 動力單元 S 間隔 Τ 厚度 WR 後輪 WF 前輪 2 5 車體框架 2 6頭管 · 27 主架管 2 7a 下降框架部 27b 低框架部 2 8 橫跨管 2 9 後架管 29a 斜升框架部 29b 上部框架部 30 312/發明說明書(補件)/92-06/92107265 200400316 30 後架管 30a 斜升框架部 30b 上部框架部 3 1 前叉 32 方向操縱把手 33 連桿機構 34 引擎本體 35 曲柄箱 35a 箱體部 35b 箱體部 36 汽缸塊 3 6a 冷卻鰭片 37 汽缸頭 3 7a 冷卻嬉片 38 頭蓋 39 汽缸腔 40 活塞 4 1 燃燒室 42 連桿 43 曲柄銷 44 曲柄軸 4 5 第1滾珠軸承 46 第2滾珠軸承 47 吸氣口 31200400316 发明 Description of the invention [Technical field to which the invention belongs] The present invention relates to a forced air-cooled engine for a two-wheeled locomotive, which can swing up and down on the body frame to support the arrangement of the cylinder axis approximately horizontally, and also to the left and right At least one side of the engine body is equipped with a cylinder head with a spark plug as part of the component. At least the cylinder head in the engine body is covered with a shroud to form a circulation between the head and the cylinder head for forced air cooling. road. [Prior art] Conventionally, in the forced air-cooled engine for a two-wheeled locomotive disclosed in Japanese Patent Application Laid-Open No. 9-1445445, the wall portion that restricts the plug cap to the outer side of the vehicle body is attached to the shroud. . [Summary of the Invention] (Problems to be Solved by the Invention) However, in the forced air-cooled engine for a two-wheeled locomotive disclosed in the aforementioned Japanese Patent Application Laid-Open No. 9-1 44520, the plug cap and the body frame are disposed in the plug cap. In the case where the space between the outer frame members is narrow, it is difficult to wind up the high-voltage wires connected to the plug cap facing the outside of the vehicle body, and the high-voltage wires must be arranged with a small bending radius, so it is not easy to lift the high-voltage wires. Bending durability. The present invention has been made in view of the above circumstances, and an object thereof is to provide a forced air-cooled engine for a two-wheeled locomotive, which can increase the degree of freedom in the arrangement of high-voltage electric wires and also improve the bending durability of the high-voltage electric wires. (Means for Solving the Problem) 6 312 / Invention Specification (Supplement) / 92-06 / 92107265 200400316 To achieve the above-mentioned purpose, the invention in the first scope of the patent application is supported on the vehicle body frame by swinging up and down to support the cylinder An engine main body having a substantially horizontal axis and a cylinder head with a spark plug installed on at least one of the left and right sides as part of the constituent elements. At least the cylinder head in the engine body is formed between the cylinder head and the cylinder collar for forced air cooling. A forced air-cooled engine for a two-wheeled locomotive covered by a shroud is a flow path for air circulation, characterized in that one end of a pair of left and right rear frame members provided in the body frame supports a cylinder head which is disposed above the cylinder head. The rear ignition induction 圏, one end of which is connected to the other end of the high-voltage wire of the ignition induction coil, is turned back in a slightly U shape from the front direction of the plug cap connected to the ignition plug, and is connected to the plug. cap. According to the constitution of the invention of claim 1, the high-voltage electric wire connected to the plug cap extends forward from the plug cap, even if the interval between the plug cap and the frame member arranged outside the plug cap in the vehicle body frame is changed. The narrowness can still avoid interference with the vehicle body frame, and can increase the degree of freedom in arranging the high-voltage wires. At the same time, setting the bending radius of the high-voltage wires larger can improve the durability of the high-voltage wires. In addition, the invention in the second scope of the patent application is a structure in which the invention in the first scope of the patent application is added, and the above-mentioned enclosure board is provided with a co-operating and covering cylinder head, which are combined with each other. The fitting holes for fitting the plug caps to the upper and lower cover members are formed between the mating surfaces of the two cover members, and the upper cover member is integrally provided with the cover covering the fitting holes from above. The shelter of the fitting portion of the plug cap uses the elastic force from the high-voltage electric wire described above for the Mars plug 7 312 / Invention Specification (Supplement V92-06 / 92107265 200400316). According to the structure described above, the plug cap is abutted and coupled with the elastic force from the action of the high-voltage electric wire. The anti-rotation positioning part formed on the shelter can prevent the plug cap from rotating around the axis of the spark plug during the operation of the engine, thereby preventing the vibration of the high-voltage electric wire. 'It is possible to effectively prevent the high-voltage electric wire from contacting with other parts. Moreover, the shielding portion is covered with the fitting portion of the fitting hole of the plug cap from above, so that it is possible to prevent contact from the upper portion of the engine body. The mud and water falling on the components will not be attached to the connection part of the high-voltage electric wire and the plug cap. In addition, the invention in the scope of the patent application No. 3 is added to the invention in the scope of the patent application No. 2 and is characterized by: The clamp for holding the high-voltage electric wire connected to the plug cap is mounted on the clamp mount of the upper cover member continuously formed by the shelter portion. According to the above-mentioned structure, the high-voltage electric wire is held near the plug cap. In order to effectively prevent the vibration of the high-voltage electric wires, the strength of the shelter can be increased by the fixture mounting base. [Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to an embodiment of the present invention shown in the accompanying drawings. 1 to 17 show one embodiment of the present invention. FIG. 1 is a side view of a motorcycle-type two-wheeled locomotive. A perspective view of the middle portion of the motorcycle-type two-wheeled locomotive in the state of the box. FIG. 3 is an enlarged sectional view taken along line 3-3 in FIG. 1, and FIG. 4 is taken along 8 312 / Invention Specification (Supplementary Pieces) / 92-06 / 92107265 200400316 Arrow view by arrow 4, Figure 5 is an arrow view along arrow 5 in Figure 3, and Figure 6 is a cross-sectional view along line 6-6 in Figure 3 ' FIG. 7 is a view when the head cover is viewed from the cylinder head side, FIG. 8 is a sectional view taken along line 8-8 in FIG. 7, and FIG. 9 is an enlarged sectional view taken along line 9-9 in FIG. 6, Fig. 10 is a cross-sectional view taken along line 10-10 in Fig. 9 'Fig. 11 is a cross-sectional view taken along line 1 1-1 11 in Fig. 4, and Fig. 12 is taken along Fig. 5 An enlarged cross-sectional view taken along line 1 2-1 2 of Fig. 13, Fig. 13 is a cross-sectional view taken along line 13-13 of Fig. 5, and Fig. 14 is an enlarged cross-section taken along line M-14 of Fig. 2. Fig. 15 is a cross-sectional view taken along the line 15-15 in Fig. 14; Fig. 16 is a cross-sectional view taken along the line 16-16 in Fig. 4; Fig. 17 is A cross-sectional view taken along line 1 7-17 in Fig. 14. First, in FIGS. 1 and 2, the body frame 25 of the motorcycle-type motorcycle includes a main frame pipe 27 fixed at the front end to the head pipe 26, and a span fixed to the rear end of the main frame pipe 27 at a right angle. The pipe 28 and the front end are respectively connected to the left and right pair of rear frame pipes 29 as a rear frame member across the two ends of the pipe 28. The main frame pipe 27 is integrally connected from the head pipe 26 to the rear. The lower sloping frame portion 27 a and the lower frame portion 2 7 b extending substantially horizontally from the rear end of the lower sloping frame portion 2 7 a to the rear are configured. In addition, a pair of left and right rear frame tubes 29, 30 are integrally provided with diagonally rising frame portions 29a, 30a extending from both ends of the above-mentioned spanning tube 28 toward the upper rear, and from the diagonally rising frame portions. The rear ends of 2 9 a and 3 0 a are formed by the upper frame portions 2 9 b and 30b which are bent horizontally so that the rear end openings face each other while extending substantially horizontally toward the rear. 9 312 / Inventory Supplement) / 92-06 / 92107265 200400316 The head tube 2 6 supports a front fork 3 1 on the front wheel WF in a steerable direction, and an upper end of the front fork 3 1 is connected to a direction control handle 3 2. The front portion of the two rear frame tubes 29 and 30 of the vehicle body frame 25 supports the front portion of the power unit p which can be swung up and down via a link mechanism 33. The rear wheel WR is arranged on the right side of the rear portion of the power unit P. The shaft is supported at the rear of the power unit P. In FIGS. 3 to 6, the power unit P is a four-stroke engine E of a forced air-cooled single-cylinder disposed in front of the rear wheels WR, and a stepless transmission M provided between the engine 4 and the rear wheels WR. Made up. The engine body 34 of the engine E is a cylinder block 36 having a crank case 35 and a crank case 35 connected to the crank case 35. The cylinder head 37 which is combined with the cylinder block 3 6 on the opposite side of the crank case 3 5 and the head cover 3 8 which is combined with the cylinder head 3 7 on the opposite side of the cylinder block 3 6 and is arranged on both sides of the body frame 25 Among the rear frame tubes 29, 30, the cylinder head 37 is disposed between the lower portions of the inclined frame portions 29a, 30a in front of the two rear frame tubes 29, 30. The cylinder block 36 is arranged along the axis of the cylinder cavity 39 provided in the cylinder block 36, that is, the cylinder axis C is inclined slightly upward and forward along the front-rear direction of the two-wheeled locomotive to become substantially horizontal. A combustion chamber 41 is formed between the cylinder head 37 and the piston 40 slidably fitted in the cylinder cavity 39. The piston 40 is connected to a crank shaft 44 having a rotation axis parallel to the rotation axis of the rear wheel WR via a connecting rod 42 and a crank pin 43. The crank shaft 44 is a crank case 35 which is composed of a pair of box portions 35 a and 3 5 b which include the above-mentioned cylinder axis C and a plane perpendicular to the axis of the crank shaft 44. The crank shaft 44 is rotatably supported. The first ball bearing 45 is interposed between the box member 35a and the crank shaft 44 and the box member 35b and the crank shaft 44 on the other end are interposed between 10 312 / Instruction Manual (Supplement) / 92-06 / 92107265 200400316 attached to one end A second ball bearing 4 6 is interposed therebetween. The upper side of the cylinder head 37 is provided with an intake port 47 that can communicate with the combustion chamber 41, and the lower side of the cylinder head 37 is provided with an exhaust port 48 that can communicate with the combustion chamber 41. The intake valve 49 and the exhaust valve 50 for opening and closing the intake port 47 and the exhaust port 48, respectively, are arranged in a slightly V shape on a projection view of a plane perpendicular to the rotation axis of the crank shaft 44. It is arranged on the cylinder head 37 and receives potential energy in the directions in which the intake port 47 and the exhaust port 48 are closed. The spark plug 5 1 facing the combustion chamber 41 is attached to at least one of the left and right end sides of the cylinder head 37. In this embodiment, the spark plug 51 is attached to the right side in a state facing forward in the traveling direction of the two-wheeled locomotive. Between the cylinder head 37 and the head cover 38, a moving valve mechanism 52 for opening and closing and driving the intake valve 49 and the exhaust valve 50 is housed. The moving valve mechanism 52 includes an axis parallel to the axis of the crank shaft 44 and A camshaft 5 5 that is rotatably supported by the cylinder head 37 and has both intake and exhaust cams 54 and 53; has an axis parallel to the camshaft 55 and is supported by the suction of the cylinder head 37 Gas-side and exhaust-side rocker shafts 5 6 and 5 7; the suction valve 49 can be swingably supported by driving the suction valve 49 in response to the above-mentioned suction cam 54 and the suction shaft can be supported by the suction side rocker shaft 5 6 The side rocker arm 5 8 and the exhaust side rocker arm 59 supported on the exhaust side rocker shaft 57 can be swingably supported so as to open and close the drive exhaust valve 50 in response to the exhaust cam 53. A driven sprocket 60 is fixed to one end portion of the cam shaft 55. On the other hand, the crankshaft 44 is fixed at a position corresponding to the passive sprocket 60 described in the above 11 312 / Invention Specification (Supplement) / 92-06 / 92107265 200400316 on the outer end side of the second ball bearing 46. The driving sprocket 61, the driving and passive sprocket 61, 60 are wound with an endless cam chain 62, and the cam chain 62 is housed so as to be formed along the cylinder block 36, the cylinder head 37, and the head cover 38. The storage room 6 3 f inside away. With such a driving sprocket 61, a passive sprocket 60, and a cam chain 62, the cam shaft 55 is driven to rotate at a number of rotations of half the number of rotations of the crank shaft 44. A drive gear 64 is fixed to the crank shaft 44 on the outer end side of the first ball bearing 45 so that the lubricating oil is sucked from the lubricating oil storage portion 65 formed in the lower portion of the crank case 35 through the lubricating oil filter 79. The oil pump 66 mounted on the crank case 35 in this manner is driven by the drive gear 64 described above. A part of the lubricating oil discharged from the oil pump 66 is used to lubricate the moving valve mechanism 52. The crank case 35, the cylinder block 36, the cylinder head 37, and the head cover 38 are provided for guiding the lubricating oil from the oil pump 66 to the moving valve mechanism 52.的 油油 保护 路 67。 The lubricating oil supply path 67. Further, a lubricant supply path 67 is arranged on the cylinder head 37 at a position closer to the intake port 47 than the exhaust port 48. In this embodiment, on a projection view of a plane perpendicular to the axis of the crank shaft 44 A lubricating oil supply path 67 is arranged at a position crossing the intake port 47. Referring to FIGS. 7 and 8, the downstream end portion of the lubricating oil supply path 67 is connected to the cylinder head 37 to the head cover 38 so as to supply lubricating oil from one end to the cylinder head 37 side. The surface of the flow groove 68 is connected to the other end of the flow groove 68 and a bottomed flow hole 69 provided on the side wall of the head cover 38. The ejection hole 70 communicating with the inner end of the flow hole 69 is directed toward the moving valve. The mechanism 52 is provided on the inner side surface of the side wall of the head cover 38 in a manner of spraying lubricating oil. In addition, the head cover 3 8 is provided with a bottomed 12 which communicates with one end of the above-mentioned circulation groove 6 8 / the invention description (supplement) / 92-06 / 92107265 200400316 the detection hole 7 1, and at the same time, the detection hole 71 A mounting hub 72 protruding from the outside of the head cover 38 to the outside is positioned at a position where the temperature detector 73 is projected so that the detection element portion 73a protrudes into the detection hole 71. That is, the temperature detector 73 is mounted on the head cover 38 of the lead 34 so that the element portion 73a faces the lubricating oil supply path 67. Note that in FIG. 3, a generator 76 which is fixed to the crank case 35 on the outer end side of the drive gear 64 and an external rotor 75 fixed to the crank shaft 44 around the stator 74 is provided with a generator 76. A fan 77 is fixed to an outer end of the crank shaft 44. The chip is composed of a plurality of leaves 7 7b, which are integrally provided on the outer peripheral portion of the base portion 77a of the outer rotor 75 of the tightener 76, for example, by using four bolts 78, 78, .... At least the cylinder block 36 and the cylinder head 37, parts of the real crank case 35, the cylinder block 36, and the cylinder head 37 in the engine body 34 are covered by the surrounding branches, and the flow path formed between the engine body 34 and the surrounding plate 82 8 Forced air cooling air from fan 7 7. In addition, a plurality of cooling fins 36a ··, 37a ··· are projected on the outside of the steam S and the cylinder head 37 in order to effectively cool the cooling air flowing through the flow; The surrounding board 82 is composed of a pair of upper and lower upper and lower cover members which are coupled to each other so as to cover the cylinder block 36 and the cylinder, and a fan cover 8 which covers a part of the crank case 35 and is coupled to the two cover members. 5, the upper cover member 8 3, the lower portion 312 / Invention Manual (Supplement) / 92-06 / 92107265 The body is installed with a hub-type installation so that the detection engine body is equipped with a method that is more than the fan 77 on the power generation piece 77b. In the example, Z 82, 1, Circulation River Block 36, Egg Road, 81, 37, 83, 84, 83, 84 Cover Structure 13 200400316, 84, and Fan Cover 85 are formed of synthetic resin, respectively. The upper cover member 83 is provided with a plurality of engaging claws 8 7 protruding from the joint surface with the lower cover member 84 on the lower cover member 84 side. The lower cover member 84 is provided with elastic engagement. Each of the above-mentioned fastening claws 87 ··· 's fastening portions 8 8.... In addition, the upper and lower cover members 8 3, 8 4 are integrally provided with a plurality of fastened portions 89..., 90... 89 ... , 90 ... are fastened to each other by screw parts 91 ... Thus, the upper and lower cover members are elastically engaged with the fastening portions 88 ... of the engaging claws 87 ..., and the screws 91 ... secured by the fastened portions 89 ..., 90 ... 83 and 84 are combined with each other, and the head cover 38 protrudes toward the front side from the upper and lower cover members 8 3 and 8 4. The fan cover 85 is fastened to the box member 3 5 a so as to cover a part of the box member 35 a of the crank case 35 and the fan 7 7, and is fastened to the upper and lower covers by a plurality of screw parts 92...件 83、84。 Members 83,84. The fan cover 85 is provided with a suction tube 94 forming a suction port 93 for drawing air from the outside toward the fan 77 side, corresponding to the outside of the fan 77, and a cooling window 95 is provided on the suction port 93. . The heat radiation window 95 is composed of a plurality of, for example, five ring portions 95 a to 95 d arranged concentrically with the suction tube 94, and extends radially and connects the suction tube 94 and each ring portion 9 5 a to 9 5 d. A plurality of connecting portions 9 5 e ... are formed, and at a position corresponding to these connecting portions 9 5 e ..., the phase aligned with the crank shaft 44 is indicated on the outside of the fan cover 85, for example, in a triangular shape. Timing marks 9 6. The timing mark 9 6 is a time user for igniting. For example, 4 312 / Invention Specification (Supplement) / 92-06 / 92107265 200400316 Fan 77 is fixed to the crank shaft 44, for example, 4 One of the screws is positioned in the heat radiation window 95 corresponding to the timing mark connecting portion 9 5 e, so that the phase matching of the ignition time can be easily performed. The timing mark 96 is not only used for the ignition time pair but also It can be used for the time alignment of TDC and BDC. In addition, when the moving valve is configured to change at least one characteristic of the intake valve 49 and the exhaust valve 50, it can also be used for the time adjustment of the ® J characteristic 3 female transformer. Referring to FIG. 9 and FIG. 10 ′, a flat mounting surface 97 that is opened at the suction inlet 47 on the upper side of the cylinder head 37 is fixed to the lower end of the input pipe 98 by an insulator 99. The lower end of the input pipe 98 is integrally provided with a flange portion 9 8a, an insulator 99 having suction holes 100 of the optional 47, and the mounting surface 97, and the collar has a shape corresponding to the flange portion 9 8a. On both sides of the insulator 99, washers 101 and 102 surrounding the above-mentioned 100 are mounted without seams. Among them, a gasket 102 is mounted between the insulator 99 and one side, and a gasket 102 is mounted between the insulator 99 and the protrusion. . In addition, the thickness T of the insulator 99 is the space between the mounting surface 97 and the cover member 83 on the upper part of the enclosure 82 on both sides of the suction port 47. The mounting surface 97 is provided with JI holes 1 〇3, 1 〇 3. The screw 104 inserted into the flange portion 9 8 a and the insulator 9 9 is tied to each of the above screw holes 103 and 103, and the input can be input through the insulator 99 by tightening the screw 104. The pipe 98 is fastened to the mounting surface. However, in the surrounding plate 82 covering the cylinder head 37, the upper cover is provided with an opening 105 for fitting and positioning the insulator 99. Tie 78 ... Zhi 96 together. The operation of the mechanism 52 f | 〇 is provided so that 1 is interposed! Suction port > formed as a suction hole 97 between the crotch 9 8 a is larger than S. Screw bolt 104, bolt 104, 97 of E E. Member 8 3 This opening 312 / Invention specification (Supplement) / 92-06 / 92107265 15 200400316 Part 1 0 5 is formed larger than the insulator 9 9 as shown in Figure 10 Between the partial side surface of the opening portion 105 and the partial side surface of the insulator 99, an exhaust air outlet 106 for discharging cooling air flowing through the flow path 81 to the outside is formed. The upstream end of the above-mentioned input pipe 98 is connected to the downstream end of the gasifier 108 which is arranged behind the input pipe 98 via a connection hose 107, and the upstream end of the gasifier 108 is connected to the connection pipe 1o. 9 and an air cleaner 1 1 0 disposed on the left side of the rear wheel WR is connected. In FIG. 11, the gasifier 1 08 is provided with a two-wheeled locomotive starter 1 1 1 which is electrically controlled based on the detection of the temperature detector 7 3. The two-wheeled locomotive starter 1 1 1 is provided with a circuitous gas. It is installed as a throttle valve (not shown) of the carburetor 1 0 8 and is opened and closed in the middle of the starter gas mixture passage 1 1 3 of the carburetor body 1 1 2. Carburetor body 1 1 2 on. A gas exhaust pipe 114 is fixed to the gasifier body 1 1 2 in the starting mixture gas passage 1 1 3 so as to be interposed in a portion upstream of the two-wheel locomotive starter 1 1 1. The lower part of the main body 112 is fixed with a fuel nozzle 1 15 having an upper part protruding from a lower part of the air discharge pipe 1 1 4. Further, a fuel tank 1 16 for storing fuel is fixed to a lower portion of the gasifier body 1 12, and a lower portion of the fuel nozzle 1 15 projects into the fuel in the fuel tank 1 16. The two-wheeled locomotive starter 111 has a needle valve 1 1 7 and a needle valve 1 1 7 that can be inserted into the downstream side of the gas release pipe 1 1 4 and can be freely advanced and that are provided in the middle portion of the starting gas passage 1 1 3. The position of 1 8 in the nozzle 1 1 7 is determined by the energization control of the two-wheeled locomotive starter 11 1 to determine 16 312 / Invention Manual (Supplement) / 92-06 / 92107265 200400316 The circulation of the starting gas mixture The amount of the starting gas mixture in the passage 113 is a fitting hole 1 2 0 between the upper and lower cover members 83 and the mating surfaces 86 constituting a part of the enclosure 82. In addition, the Martian plug 5 1 plug cap 1 2 1 is provided around the fitting hole 1 2 0 with a crotch portion 1 2 1 a which is attached to the outer surface of the upper and lower cover members 8 3 and 8 4 and is fitted to the fitting. Hole 1 In addition, in the upper and lower cover members 83 and 84, the upper j member 83 is integrally provided with a sheltering portion 122 covering the fitting portion of the bolt 121 fitted into the fitting hole 120 from above. Front end 咅 丨 As shown in FIG. 12, a stop position 1 2 2 a is formed to prevent the bolt 1 2 1 from rotating around the axis of the Mars plug 51 in order to prevent the plug 1 2 1 from rotating. It is formed by covering the fitting hole 120 of the plug cap 121 which is formed in a posture extending from the plug 1 2 1 toward the front to extend the high-voltage electric wire 1 23 connected to the plug cap 1 2 1 from the top. The anti-rotation positioning portion 122a is formed by using an elastic force acting from a high pressure f 1 2 3 to add a plug cap 1 2 1 to one end around the axis of the Mars plug 51 to oppose and accept the elastic force. Referring to FIG. 1, the upper cover member 8 3 is a jig which is formed by integrally forming a continuous shelter portion 1 2 2. Fitting seat 125, the elastic clamp 124 mounted on the mount jig 125, provided in the plug remains attached towel | high-voltage electric wires 123. In addition, the engine body 34 is supported on the vehicle body frame 25 in a lower-type manner in which the cylinder head 37 is arranged in the lower part of the left and right rear frame pipes 29 and 30 at the front of the inclined frame portions 29a and 30a. The plug cap 121 is also arranged At 312 / Invention Specification (Supplement) / 92-06 / 92107265 84, the plug structure 0, the post body plug cap 5, such as the plug cap 〇 cap part of the I potential protection part is described above in this | 121 pairs The two sides of the diagonally rising 17 200400316 liter frame part 2 9 a, 3 0 a, the upper part of the diagonally rising frame part 30 a on the right side of the two escaping frame parts 2 9 a, 3 0 a, as shown in the figure 2 expressly supports the ignition induction coil 126. One end is connected to the ignition coil 1 2 6 and the other end of the high-voltage wire 1 2 3 is U-shaped from the front direction of the above-mentioned plug cap 1 2 1 which is connected to the rotation stop positioning portion 1 2 2 a. It is folded back and connected to the plug cap 1 2 1. Referring to FIG. 1 to FIG. 17, the upper cover member 8 3 of the enclosure board 8 2 is integrally provided, and the front end portion has engagement protrusions 1 2 8 a facing each other and protruding toward each other. , 1 2 8 a, at the same time, a pair of hooks 128, 128 erected from the outside of the upper cover member 8 3; and connected between the two hooks 128, 128, facing each other and from the upper cover member A pair of connecting walls 129 and 130 erected outside 83 are also provided with right-angled rectangular through holes 1 31 surrounded by the hooks 128 and 128 and the connecting walls 129 and 130. Between the engaging protrusions 128a and 128a of the two hooks 128 and 128 and the two connecting walls 1 29 and 1 30, they are pressed into the space between the two hooks 1 2 8 and 1 2 8 while overlapping each other. A plurality of bendable long parts. In this embodiment, the cables 1 3 3 of the bendable long parts belonging to the inner side supported by the two connecting walls 1 29 and 130, and the outside are in contact with the two coupling protrusions 128a. The pipe 134, which is a flexible long part belonging to the outer side of 128a, is sandwiched between the engaging protrusions 128a and 128a and the two connecting walls 1 2 and 1 30. The cable 1 3 3 has a soft plastic sheath and is connected to the temperature detector 73. The tube 1 34 made of a hard elastic material is connected to the head cover 38 for guiding aeration gas. Further, the hook 128 is connected to the upper cover 18 312 / Invention Specification (Supplement) / 92-06 / 92107265 200400316 member 8 3 of the base plate portion 1 2 8 b by the entire length of the base end portion; The cable wires 1 3 3 and the tube 1 3 4 are spaced apart from each other in the longitudinal direction, for example, two portions are continuously connected to the substrate portion 1 2 8 b, and at the same time, the front end portion is provided with the engaging protrusion portion 1 2. A plurality of 8 a, for example, two branch plate portions 1 2 8 c and 1 2 8 c, and a reinforcing wall 132 supporting a cable 133 between the two connecting walls 129 and 130 are tied to each branch plate portion. 1 2 8 c and 1 2 8 c are connected between two hooks 1 2 8 and 1 2 8. An exhaust pipe 1 1 8 is connected to the lower side of the cylinder head 37 which is not covered by the surrounding panel 8 2 so that the upstream end is connected to the exhaust port 48 and is disposed on the right side of the rear wheel WR. The exhaust muffler 1 1 9 is connected to the downstream end of the exhaust pipe 1 1 8. With particular attention to Figs. 3 and 4, the crank case 35 is connected to the transmission case 136 extending from the left side of the rear wheel WR in a state forward of the two-wheeled locomotive. The transmission case 1 3 6 is a case main body 137 which is integrally connected to the case member 35b of the above-mentioned crank case 35 and extended to the rear; a first transmission chamber 1 40 is formed between the transmission case 1 and the case main body 137 and is fixed from the left side. The left side cover 1 3 8 fastened to the box body 1 3 7; and the right side cover 1 3 which forms the second transmission room 1 4 1 between the box body 1 3 7 and is fastened to the right rear part of the box body 1 3 7 Constituted by 9. On the front of the main body 1 3 7 of the transmission case 1 3 6, a support wrist portion 1 42 is protruded so as to be arranged on the side of the cylinder block 36 of the engine E. The support wrist portion 1 4 2 is connected through The lever mechanism 3 3 is swingably supported on the vehicle body frame 2 5. The axles 1 4 3 of the rear wheel WR are rotatably supported by the rear part of the transmission case 1 3 7 and the right side cover 1 3 9. In addition, as shown in FIG. 1, between the rear portion of the box body 137 and the rear side of the vehicle body frame 25, the ramp frame 19 312 of the rack pipe 29 312 / Invention Specification (Supplement) / 92-06 / 92107265 200400316 rack portion 2 9 a Equipped with rear buffer 1 4 4. The stepless speed changer M is a V-belt type which is housed in the first transmission room 1 40, and a reduction gear set 145 ° is provided between the stepless speed changer M and the axle 1 43. 2 The outer side of the ball bearing 46 is connected to the drive-side transmission pulley 1 4 6 of the end of the crank shaft 4 4; it has an axis parallel to the crank shaft 44 and is mounted on the case body 1 3 7 via the centrifugal clutch 1 4 8 The passive side drive pulley 1 49 on the passive shaft 1 47 rotatably supported by the rear and right side covers 1 39; and the unconnected V-belt 150 on the two drive pulleys 1 46 and 149. The drive-side transmission pulley 146 is composed of a fixed pulley half 146a fixed to the crank shaft 44 and a movable pulley half 146b slidably mounted on the crank shaft 44. A V-shaped annular groove 1 51 is formed between the two pulley halves 146a, 14 6b, and a V-belt 15 is inserted into the annular groove 15. In addition, on the rear side of the movable pulley half 146b, a slant panel 152 is fixed to the crank shaft 44. A plurality of weight rollers 1 5 are accommodated in a floating state between the movable pulley half 14 6b and the slant panel 1 5 2. 3. When the number of rotations of the crank shaft 44 increases, the weight rollers 153 subjected to the centrifugal force move outward in the radial direction of the crank shaft 44 so that the movable pulley half 14 6b approaches the fixed pulley half 146a. As a result, the contact radius of the V-belt 150 to the two pulley halves 146a, 146b is increased. On the other hand, the passive-side transmission pulley 149 includes a support shaft 154 connected to the passive shaft 147 via a centrifugal clutch 148 and supported by the passive shaft 147 as a rotatable support tube 154; a fixed belt 20 formed in the support tube 154; 312 / Invention Specification (Supplement) / 92-06 / 92107265 200400316 wheel half 149a; and can approach or leave the fixed pulley half 149a, and is supported by the support cylinder 1 5 4 at the same time, while A movable pulley half 149b that imparts elastic potential in a direction approaching the fixed pulley half 149a has a V-shaped belt 150 inserted into a V-shaped annular groove 155 formed between the two pulley halves 149a and 149b. Further, as the contact radius of the movable belt half 149b of the V-belt 150 to the driving-side transmission pulley 146 increases, the movable belt half 149b follows the manner in which the contact radius of the V-belt 150 to the driven-side transmission pulley 149 decreases. By moving in the axial direction, stepless speed change is performed between the crank shaft 44 and the driven shaft 1 4 7 in response to the rotation of the crank shaft 44. A left cover 1 3 8 of the transmission case 1 3 6 rotatably supports a recoil shaft 156, and an outer end of the recoil shaft 156 is provided with a pedal start pedal 157 (see FIG. 1). In addition, on the inside of the left side cover 138, a recoil shaft 156 is provided between the recoil shaft 1 56 and the crank shaft 44 to transmit the power of the recoil shaft 156 in response to the depression operation of the kick pedal 157 to the crank shaft. 44's recoil starter 158. The reduction gear set 94 is disposed between the driven shaft 147 and the axle 143 and is housed in the second transmission room 141. The rotation power of the driven shaft 147 of the stepless speed changer M is transmitted to the rear by the reduction gear set 9 4 after deceleration. The axle 143 of the wheel w R. However, between the front portions of the two rear frame tubes 29 and 30 of the vehicle body frame 25, a storage box 160 for storing a helmet and the like is supported so as to be arranged on the engine E, and two rear frame tubes 29 A fuel tank 161 is supported between the rear of the 30 and 30. In addition, the front portion of the upper frame portion 29b of the rear frame pipe 29 on the left of the two rear frame pipes 29, 30 supports 21 312 / Invention Specification (Supplementary) which can purify the exhaust port 48 of the engine E. / 92-06 / 92107265 200400316 Secondary air filter 162 for secondary air. The downstream end of the suction pipe 1 6 3 is connected to the suction port of the air filter 16 for the secondary air. The downstream end of the suction pipe 163 is inserted into the right side of the two rear frame pipes 29 and 30. The rear end portion of the upper frame portion 3 Ob of 30. The secondary air control valve 164 provided between the engine E and the secondary air filter 162 is supported by the bracket 1 65 of the diagonally rising frame portion 29a attached to the left rear frame pipe 29. Further, a stepless transmission M from the power unit P is provided at a lower portion of the left-inclined frame portion 29 a of the left-side rear frame tube 29 to a connecting tube portion 166 'communicating with the inside of the inclined frame portion 29a. The ventilation duct 167 for internal cooling air is connected to the above-mentioned connection pipe portion 166. The vehicle body frame 25 is covered by a synthetic resin vehicle body cover 168. The vehicle body cover 168 includes: a foot cover 169 covering the front of the driver's feet; A pedal 1 70 provided on the lower part of the foot guard 1 69; and a side cover 1 71 connected to the pedal 1 70 and covering the rear of the vehicle body from both sides. The side cover 1 7 1 is provided with a seat 1 7 2 that can open and close the storage box 1 60 and the fuel tank 1 6 1 from above. Hereinafter, the function of this embodiment will be described. An oil pump 66 for sucking lubricating oil from the lubricating oil storage portion 65 in the crank case 35 is mounted on the crank case 35 of the engine body 34, and guides the lubricating valve mechanism 52. The lubricating oil supply path 67 for the lubricating oil is provided on the crank case 35, the cylinder block 36, the cylinder head 37, and the head cover 3 8 in communication with the oil pump 66. The temperature detector 7 3 faces the detection element portion 73a. The state of the lubricating oil supply path 67 is attached to the engine body 34. 22 310,000 Invention Manual (Supplement) / 92-06 / 92107265 200400316 In the lubricating oil supply path 67 for guiding the lubricating valve mechanism 5 2 and the lubricating oil discharged from the oil pump 6 6, it is related to the operation as long as the engine is running. The state and posture are filled with lubricating oil. As described above, by arranging the detection element portion 73a of the temperature detector 73 so as to face the lubricating oil supply path 67, it is extremely difficult to receive changes in the operating state and posture of the engine. The engine temperature can always be detected well and quickly, and the temperature detector 73 does not require other complicated structures for detecting the temperature of the lubricating oil. Furthermore, since the lubricating oil supply passage 67 is arranged in the cylinder head 37 in a position closer to the suction port 47 than the exhaust port 48, it is extremely unlikely to be caused by the environment from the outer surface portion of the engine body 34. The effect of heat radiation can detect the engine temperature well even at low rotation (idling state) after the engine E is started, and the engine temperature can always be detected well and quickly. The engine E is configured as a forced air-cooling type in which the cooling block 3 6 a ..., 3 7 a ... is provided on the cylinder block 36 and the cylinder head 37, and the temperature detector 7 3 Because it is mounted on the head cover 38 without an air-cooling fan, the engine temperature can be accurately detected without being disturbed by the cooling fins 36a ..., 3 7a ..., and the structure for installing the temperature detector 73 is also Made simple. In addition, the gasifier 108 connected to the suction port 47 is provided with a detection probe 3 for opening and closing a starting gas mixture path 113 provided in the gasifier 108 to perform energization control. The starter of the two-wheeled locomotive 1 1 1 is based on the engine temperature correctly detected by the temperature detector 7 3, and the mixture of air supplied to the engine E at the time of starting is optimized, thereby improving 23 312 / Invention Specification (Supplement) / 92-06 / 92107265 200400316 Engine E warm-up performance. In addition, the cylinder block 36 and the cylinder head 37 are covered with a surrounding plate 8 2 formed between the cylinder block 36 and the cylinder head 37 by a flow path 8 1 for circulating air for forced air cooling. The temperature sensor 7 3 is installed on the head cover 3 8 in a way that is not affected by the cooling air of the forced air supply, and the engine temperature can be accurately detected at the same time as the forced air cooling engine. Although a flat mounting surface 97 is provided on the side of the upper part of the cylinder head 37 to open the suction port 47, the mounting surface 97 is fixed to the input pipe 98 via an insulator 99. The upper cover member 83 is provided with an opening portion 105 for fitting and positioning the insulator 99. According to this, the insulator 99 is positioned and held on the enclosure 82 by fitting into the opening 105, and the insulator 99 serves as a bolt 104 that guides the screw hole 103 provided in the mounting surface 97 of the cylinder head 37 to be screwed. The function of... Can be easily screwed and tightened to the screw hole 1 0. In addition, since a part of the inner side surface of the opening portion 105 provided in the upper cover member 83 made of synthetic resin and a part of the side surface of the insulator 99 is formed as an air outlet 106, the air discharged from the air outlet 106 is used. The warm air is used to warm the input pipe 9 8 to improve the warm-up performance. In addition, the mold portion for forming the opening portion 105 during the molding of the upper cover member 8 3 may be increased in size so as to include a portion corresponding to the above-mentioned air outlet 106 to increase the strength. The life of the mold. In addition, since the thickness T of the insulator is set to be larger than the interval S between the mounting surface 97 and the surrounding plate 82, 24 312 / Invention Specification (Supplement) / 92 is pressed against the mounting surface 97. -06/92107265 200400316 The insulator 9 9 is fitted into the opening 105, and the insulator 9 9 can be prevented from falling off the enclosure 82 during assembly, which can further improve the assemblability. The shroud 82 is provided with a pair of upper and lower cover members 8 3, 8 and 4 which are coupled to each other so as to cover the cylinder block 36 and the cylinder head 37 in a coordinated manner, and are fitted and connected to the cylinder head 3 7 The fitting holes 1 20 for the plug caps 1 2 1 of the Mars plug 5 1 installed on the right side of the plug are formed between the mating surfaces 86 of the two cover members 8 3 and 8 4. In addition, the upper cover member 83 is integrally provided with a sheltering portion 122 covering the fitting portion of the plug cap 121 fitted into the fitting hole 120 from above, and using the elastic force acting from the high-voltage electric wire 123 to the axis of the spark plug 51. The plug cap 1 2 1 at the peripheral end is abutted against the elastic force and bears the plug cap 1 2 1, and is engaged with the anti-rotation positioning portion 122 a formed on the shelter portion 1 22. As a result, at least a portion of the high-voltage electric wires 1 2 3 are connected to extend forward from the plug cap 121, and even if the plug cap 121 and the rear frame pipe 30 of the vehicle body frame 25 are arranged outside the plug cap 1 2 1, The narrowing of the interval can still avoid interference with the vehicle body frame 25, and can increase the degree of freedom in arranging the high-voltage wires 123. At the same time, the bending radius of the high-voltage wires 1 2 3 can be set larger, which can improve the high-voltage wires 1 2 3 Durability. In addition, the plug cap 1 2 1 is abutted with the elastic force acting from the high-voltage electric wire 1 2 3 and is connected to the rotation prevention positioning portion 122 a formed on the shelter portion 122. Therefore, the plug cap 1 2 1 can be prevented during engine operation. Rotate around the axis of the Mars plug 51 to prevent vibration of the high-voltage wire 1 23 and effectively prevent the high-voltage wire 1 2 3 from contacting with other parts. Furthermore, the shelter portion 122 is covered from above with the embedding of the plug cap 121 25 3Π / Invention specification (Supplement) / 92-〇6 / 921〇7265 200400316 The fitting portion of the fitting hole 1 2 0, so that it can be prevented Components that touch and fall above the engine body 34, for example, muddy water of the storage box 1 60, are attached to the connection portions of the high-voltage electric wires 1 23 and the plug caps 1 2 1. In addition, the clamp 124 holding the high-voltage electric wire 123 is attached to the clamp mounting seat 125 formed in the upper cover member 83 continuously from the above-mentioned shelter portion 122. Therefore, the high-voltage electric wire 1 2 1 is held near the plug cap 1 2 1 In this way, the vibration of the high-voltage electric wire 1 2 3 can be prevented more effectively. In addition, the strength of the shelter portion 122 can be increased by the clamp mount 125. In addition, the engine body 34 is disposed on the two rear frame tubes 29 corresponding to the lower portions of the diagonally rising frame portions 29a and 30a which are provided with the rear frame tubes 29 and 30 at the front and the cylinder head 37 is inclined upward and rearward. At the same time, it is supported by the vehicle body frame 2 5 to be able to swing up and down. In addition, one end is connected behind the cylinder head 37 and is supported by the rear of the two rear rack tubes 29 and 30. The other end of the high-voltage wire 1 2 3 of the ignition induction coil 1 2 6 of the rack tube 30 is folded back in a U-shape from the front direction of the plug cap 121 connected to the rotation-preventing positioning portion 122 a and connected to the rear. The plug cap 1 2 1. With this arrangement, interference with the vehicle body frame 25 is avoided, and the high-voltage electric wire can be easily taken up, so that the bending durability of the high-voltage electric wire 1 2 3 can be more surely improved. In addition, the upper cover member 83 of the surrounding board 8 2 is integrally provided with engaging protrusions 1 2 8 a and 1 2 8 a which have front ends that protrude toward each other and protrude toward each other. A pair of uprights 1 2 8 and 1 2 8 which are erected outside the cover member 8 3; and are connected between the two hooks 1 2 8 and 1 2 8 at the same time, facing each other and from the upper cover member 8 3 A pair of connecting walls erected on the outside 26 312 / Invention Specification (Supplement) / 92-06 / 92107265 | 129, 200400316 129, 130, and there are also such hooks 128, 128, and connecting 璧 130 Surrounding right-angled quadrangular through-holes 1 3 1. Between the coupling protrusions 128a, 128a of the two hooks 128, 128 and the above-mentioned walls 129, 130, the cables 1 3 3 and the tubes 1 3 4 which overlap each other and are pressed into the space between the two men 1 2 8 are sandwiched. According to this, on the molding day of the upper cover member 83 made of synthetic resin, a pair of hooks 1 2 8 and a pair of connecting walls 1 2 9 and 1 3 0 are integrally formed with a simple mold structure without demolding. Use of parts other than the cover member 8 3 of the two-wheeled locomotive can still be supported by the two hooks 12 8, 1 2 8, the wall 1 2 9, 1 3 0 to support the cable 1 3 3 and the pipe 1 3 4 stably because of low At the same time, the number of parts and the number of assembly operations can support the cable 1 3 3 and the flat surface of the upper cover member 8 3 stably. In addition, the through-holes 1 31 are covered by the overlapping cables 1 3 3 and the tubes. When the cables 1 3 3 and the tubes 1 3 4 are supported, the through-holes 131 cannot see the inside of the upper cover member 83. That is, in the enclosure 82, that is, the through holes 1 3 1 are covered by the stacked cables 1: 1 3 4, and the cooling of the air-cooled engine E is stabilized by preventing the cooling air from leaking from the enclosure 8 2. Performance, at the same time, 82 f cables 1 3 3 and pipes 1 3 4 can be installed on the enclosure board, and cooling wind can be prevented from passing through the through-holes 1 3 1. Therefore, it does not spray dust on the outer surface side of the enclosure board 8 2 Stop the decline in appearance. The cable 1 3 3 has a soft plastic sheath and is connected to the thermostat 7 3. In addition, the tube 1 3 4 is made of a hard elastic material and is connected to the head cover 3 8 with aeration gas so that the cable 1 3 3 is outside. Plastic 312 / Invention Manual (Supplements) / 92_〇6 / 921〇7265 The two links U 128, ，，，， 128, and 上 ， and the two links can be reduced 134 134 from the above 〇Π and tube maintain strong It can be used to detect leakage to guide the rubber layer 27 200400316. It is fully tightly attached to the two connecting walls 1 2 9 and 1 3 0. At the same time, it is used to connect the two hooks outside the tube 1 3 4. The engaging protrusions 128a and 1 2 8 a at the ends of 128 and 128 can more surely support the cable 1 3 3 and the tube 1 3 4. The hooks 1 2 and 8 are connected to the base plate portion 128b of the upper cover member 83 over the entire length of the base end portion, and at a plurality of locations spaced apart along the length of the cable 133 and the tube 134, for example, Two portions are connected to the substrate portion 128b, and a plurality of, for example, two branching plate portions 1 2 8 c and 1 2 8 c are protruded from the front end portion of the coupling protrusion portion 128 a. The reinforcing wall 1 3 2 supporting the cable 1 3 3 between the two connecting walls 1 2 9 and 1 3 0 is connected to the two hooks 1 2 8 and 1 2 8 between the branch plate portions 1 2 8 c and 1 2 8 c. Between 1 2 and 8. Therefore, by supporting the inner cable 1 3 3 by the reinforcing wall 1 3 2, the cable 1 3 3 and the pipe 1 3 4 can be more stably supported. At the same time, the reinforcing wall 1 3 2 Can increase the strength of the two hooks 1 2 8 and 1 2 8. The embodiments of the present invention have been described above, but the present invention is not limited to the above-mentioned embodiments, and various design changes can be made as long as they do not exceed the scope of the present invention described in the patent application scope. (Effects of the Invention) As described above, according to the invention described in claim 1 of the scope of patent application, at least a part of the high-voltage electric wire extends forward from the plug cap, even if the plug cap and a frame member disposed outside the plug cap in the vehicle body frame. The narrower interval can still avoid interference with the vehicle body frame, and can increase the freedom of arranging high-voltage electric wires. At the same time, setting the bending radius of high-voltage electric wires to a large extent can improve the durability of high-voltage electric wires. In addition, the plug cap is connected to the rotation-preventing positioning part by pressing, so it can prevent the plug cap around the Mars plug during engine operation. 28 3 U / Invention Specification (Supplement) / 92-06 / 92107265 200400316 Rotating to prevent vibration of the high-voltage electric wire can effectively prevent the high-voltage electric wire from contacting with other parts. In addition, since the shielding portion covers the fitting portion of the fitting fitting hole of the plug cap from above, mud and water falling from contact with a member higher than the engine body can be prevented from adhering to the high-voltage electric wire and the plug. Connection part of the cap. In addition, according to the invention in the scope of patent application No. 2, by using the clamp to hold the high-voltage wire near the plug cap, the vibration of the high-voltage wire can be prevented more effectively. In addition, the strength of the shelter can be increased by the clamp mount. . In addition, according to the invention of claim 3 in the scope of patent application, interference with the vehicle body frame can be avoided, and high-voltage electric wires can be easily coiled, so that the bending durability of the piezoelectric wire can be more surely improved. [Brief description of the drawings] FIG. 1 is a side view of a motorcycle-type two-wheel locomotive. Fig. 2 is a perspective view of an intermediate portion of the motorcycle-type motorcycle with the vehicle body cover and the storage box omitted. FIG. 3 is an enlarged sectional view taken along line 3-3 in FIG. 1. FIG. 4 is an arrow view taken along arrow 4 in FIG. 3. FIG. 5 is an arrow view taken along arrow 5 in FIG. 3. FIG. 6 is a sectional view taken along line 6-6 in FIG. 3. Fig. 7 is a view when the head cover is viewed from the cylinder head side. FIG. 8 is a sectional view taken along line 8-8 in FIG. 7. FIG. FIG. 9 is an enlarged sectional view taken along line 9-9 in FIG. 6. FIG. FIG. 10 is a cross-sectional view taken along line 1-10 of FIG. 9. FIG. 11 is a cross-sectional view taken along line 1 1-1 11 in FIG. 4. 312 / Description of the Invention (Supplement) / 92-06 / 92107265 200400316 Figure 1 2 is an enlarged sectional view taken along line 1 2-1 2 in Figure 5. FIG. 13 is a sectional view taken along line 1 3-13 in FIG. 5. FIG. 14 is an enlarged sectional view taken along line 1 4-1 4 in FIG. 2. FIG. 15 is a cross-sectional view taken along line 15-15 in FIG. 14. FIG. 16 is a cross-sectional view taken along line 16-16 in FIG. 14. FIG. 17 is a cross-sectional view taken along line 17-17 in FIG. 14. (Description of component symbols) C Cylinder axis E Engine _ Infinitely variable transmission P Power unit S Interval T Thickness WR Rear wheel WF Front wheel 2 5 Body frame 2 6 head tube · 27 Main frame tube 2 7a Lower frame portion 27b Low frame Section 2 8 Spanning tube 2 9 Rear frame tube 29a Inclined frame portion 29b Upper frame portion 30 312 / Invention specification (Supplement) / 92-06 / 92107265 200400316 30 Rear frame tube 30a Inclined frame portion 30b Upper frame portion 3 1 Front fork 32 Steering handle 33 Link mechanism 34 Engine body 35 Crank case 35a Box body part 35b Box body part 36 Cylinder block 3 6a Cooling fin 37 Cylinder head 3 7a Cooling paddle 38 Head cover 39 Cylinder cavity 40 Piston 4 1 Combustion chamber 42 Connecting rod 43 Crank pin 44 Crank shaft 4 5 First ball bearing 46 Second ball bearing 47 Suction port 31
312/發明說明書(補件)/92-06/92107265 200400316 48 排氣口 4 9 吸氣閥 50 排氣閥 51 火星塞 52 動閥機構 5 3 排氣用凸輪 54 吸氣用凸輪 5 5 凸輪軸 56 搖軸 57 搖軸 58 吸氣側搖臂 59 排氣側搖臂 60 被動鏈輪 6 1 驅動鏈輪 6 2 凸輪鏈條 63 收納室 6 4 驅動齒輪 65 潤滑油儲積部 6 6 油栗 67 潤滑油供給路 68 流通溝 6 9 流通孔 70 噴出孔 71 有底檢測孔 312/發明說明書(補件)/92-06/92107265 200400316 72 安裝轂 73 溫度檢測器 73a 檢測元件部 7 4 定子 7 5 外部轉子 76 發電機 77 風扇 77a 基部 77b 葉片 78 螺栓 79 潤滑油過濾器 8 1 流通路 8 2 圍板 83 上部罩體構件 84 下部罩體構件 8 5 風扇罩 86 接合面 87 繫合爪 88 繫止部 89 被固緊部 90 被固緊部 91 螺絲構件 92 螺絲構件 93 吸引口 33312 / Instruction of the Invention (Supplement) / 92-06 / 92107265 200400316 48 Exhaust port 4 9 Intake valve 50 Exhaust valve 51 Mars plug 52 Actuating valve mechanism 5 3 Exhaust cam 54 Intake cam 5 5 Camshaft 56 rocker shaft 57 rocker shaft 58 suction side rocker arm 59 exhaust side rocker arm 60 passive sprocket 6 1 drive sprocket 6 2 cam chain 63 storage chamber 6 4 drive gear 65 lubricating oil storage section 6 6 grease 67 lubricating oil Supply path 68 Flow channel 6 9 Flow hole 70 Ejection hole 71 Bottom detection hole 312 / Invention manual (Supplement) / 92-06 / 92107265 200400316 72 Mounting hub 73 Temperature detector 73a Detection element section 7 4 Stator 7 5 External rotor 76 Generator 77 Fan 77a Base 77b Blade 78 Bolt 79 Lubricating oil filter 8 1 Flow path 8 2 Enclosure 83 Upper cover member 84 Lower cover member 8 5 Fan cover 86 Mating surface 87 Engaging claw 88 Stopper 89 Fastened portion 90 Fastened portion 91 Screw member 92 Screw member 93 Suction port 33
312/發明說明書(補件)/92-06/92107265 200400316 94 吸引筒 95 散熱窗 95a〜95d 環部 95e 連結部 96 定時標誌 97 安裝面 9 8 輸入管 98a 凸緣部 99 絕緣體 1〇〇 吸氣孔 101 墊圈 102 墊圈 103 螺絲孔 104 螺栓 10 5 開口部 106 排風口 107 連接管 10 8 氣化器 109 連接管道 110 空氣濾淨器 111 二輪機車起動器 112 氣化器本體 113 起動用混合氣通路 114 放氣管 34312 / Invention Manual (Supplement) / 92-06 / 92107265 200400316 94 Suction tube 95 Radiating window 95a ~ 95d Ring portion 95e Connection portion 96 Timing mark 97 Mounting surface 9 8 Input tube 98a Flange portion 99 Insulator 100 Hole 101 Washer 102 Washer 103 Screw hole 104 Bolt 10 5 Opening 106 Exhaust port 107 Connection tube 10 8 Vaporizer 109 Connection pipe 110 Air filter 111 Two-wheeled vehicle starter 112 Vaporizer body 113 Mixing gas passage 114 for starting Exhaust tube 34
312/發明說明書(補件)/92-06/92107265 200400316 115 燃料噴嘴 116 燃料箱 117 噴嘴 118 針閥（參照圖1 1 ) 118 排氣管（參照圖1、6) 119 排氣消音器 120 嵌合孔 12 1 栓塞帽 1 2 1 a鍔部 12 2 庇護部 1 2 2 a止旋定位部 123 高壓電線 124 夾具 125 夾具安裝座 126 點火感應圏 128 鉤 1 2 8 a繫合突部 12 8b基板部 1 2 8 c分歧板部 129 連結壁 130 連結壁 131 透孔 132 補強壁 13 3 電纜線 35312 / Invention Manual (Supplement) / 92-06 / 92107265 200400316 115 Fuel nozzle 116 Fuel tank 117 Nozzle 118 Needle valve (refer to Figure 1 1) 118 Exhaust pipe (refer to Figures 1 and 6) 119 Exhaust muffler 120 Insert Closing hole 12 1 Plug cap 1 2 1 a 锷 12 12 Shelter 1 2 2a Rotary positioning part 123 High-voltage wire 124 Fixture 125 Fixture mount 126 Ignition sensor 圏 128 Hook 1 2 8 a Anchor protrusion 12 8b Substrate 1 2 8 c branch plate portion 129 connecting wall 130 connecting wall 131 through-hole 132 reinforcing wall 13 3 cable 35
312/發明說明書(補件)/92-06/92107265 200400316 1 34 管 13 6 傳 動 箱 137 箱 主 體 13 8 左 側 蓋 13 9 右 側 蓋 140 第 1 傳 動 室 14 1 第 2 傳 動 室 142 支 持 腕 部 143 車 軸 144 後 緩 衝 器 145 減 速 齒 輪 組 146 驅 動 側 傳 動 皮 帶 輪 146a 固 定 皮 帶 輪 半 體 146b 可 動 皮 W 輪 半 體 147 被 動 軸 148 離 心 離 合 器 149 被 動 側 傳 動 皮 W 輪 149a 固 定 皮 帶 輪 半 Μ® 體 149b 可 動 皮 帶 輪 半 體 1 50 二 角 皮 帶 15 1 ΤΘ. 狀 溝 1 52 斜 面 板 15 3 重 量 輥 1 54 支 持 筒 312/發明說明書(補件)/92-06/92107265312 / Instruction of the Invention (Supplement) / 92-06 / 92107265 200400316 1 34 Tube 13 6 Gearbox 137 Box body 13 8 Left side cover 13 9 Right side cover 140 1st transmission room 14 1 2nd transmission room 142 Support wrist 143 Axle 144 Rear bumper 145 Reduction gear set 146 Drive-side transmission pulley 146a Fixed pulley half 146b Movable leather W-wheel half 147 Passive shaft 148 Centrifugal clutch 149 Passive-side leather W-wheel 149a Fixed pulley half M® body 149b Movable pulley half 1 50 Two-corner belt 15 1 ΤΘ. Shape groove 1 52 Inclined panel 15 3 Weight roller 1 54 Support cylinder 312 / Invention manual (Supplement) / 92-06 / 92107265
36 200400316 15 5 壞 狀 溝 15 6 反 衝 軸 15 7 腳 蹬 起 動 踏 板 15 8 反 衝 式 起 動 裝 置 1 60 收 納 箱 16 1 燃 料 箱 162 二 次 空 氣 用 空 氣 濾 淨器 163 吸 氣 管 164 二 次 空 氣 控 制 閥 165 撐 架 166 連 接 管 部 167 通 風 管 1 68 合 成 樹 脂 製 車 Em 體 殻 罩 169 護 腳 罩 1 70 踏 板 17 1 側 罩 1 72 蓋 板36 200400316 15 5 Bad groove 15 6 Recoil shaft 15 7 Pedal start pedal 15 8 Recoil starter 1 60 Storage box 16 1 Fuel tank 162 Air filter for secondary air 163 Suction tube 164 Secondary air Control valve 165 Bracket 166 Connecting pipe section 167 Ventilation pipe 1 68 Synthetic resin car Em Body cover 169 Foot cover 1 70 Pedal 17 1 Side cover 1 72 Cover
312/發明說明書(補件)/92-06/92107265 37312 / Invention Specification (Supplement) / 92-06 / 92107265 37