514613 A7 B7 五、發明説明（1 ) 【發明所屬的技術領域】 适個發明是關於速克達型車輛之排廢氣淨化裝置。 (請先閱讀背面之注意事項再填寫本頁) 【習知技術】 以往的具有擺動式動力單元的速克達型機車，是設置 有具備了二次空氣控制閥與用來將淸淨空氣輸送到這個二 次空氣控制閥的副空氣濾淸器的引擎的排廢氣淨化裝置， 在日本特開平6 — 5 0 1 4 0號公報中，是揭示有：將二 次空氣控制閥安裝到滅音器，在其後方使與其他構件獨立 形成的副空氣濾淸器支承到車體框架後端部，以軟管連接 到二次空氣控制閥與副空氣濾淸器之間的構造。 【發明欲解決的課題】 經濟部智慧財產局員工消費合作社印製 如上述的傳統例子，將副空氣濾淸器獨立設置的話， 副空氣濾淸器本身的零件數量會增加，由於爲了要將其安 裝到車體框架側而要設置支架等會讓零件數量增大，安裝 程序也會增加。而也需要在設計上下工夫來考慮速克達型 車輛的特質讓空間效率增加來配置副空氣濾淸器，也需要 考慮如何使副空氣濾淸器的耐久性提升。 【用來解決課題的手段】 用來解決上述課題的速克達型車輛的排廢氣淨化裝置 的申請專利範圍第丨項的發明，是將引擎與傳動箱一體形 成，將用來把後輪支承到該傳動箱的後部的擺動式動力單 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -4- 514613 A7 _— _ _B7_______ 五、發明説明（2 ) (請先閲讀背面之注意事項再填寫本頁) 元懸掛到車體後部，並且中介著二次空氣控制閥從副空氣 濾、胃器將二次空氣輸送到引擎的排氣通路來淨化排出廢氣 的速克達型車輛，其特徵爲：在上述後輪上方配置後擋泥 板且使其支承到車體框架，並且將上述副空氣濾淸器的外 殻部與後擋泥板一體形成。 申請專利範圍第2項的發明，在上述申請專利範圍第 1項’其中在上述擺動式動力單元的傳動箱上方且在後輪 的其中一側配置了引擎的進氣用空氣濾淸器，並且在於與 空氣濾淸器隔著後輪的車體相反側配置了上述副空氣濾淸 器。 申請專利範圍第3項的發明，在上述申請專利範圍第 1項’其中上述副空氣濾淸器的進氣口是在上述後擋泥板 1:朝向車體後方開口。 【發明效果】 經濟部智慧財產局員工消費合作社印製 藉由申請專利範圍第1項的發明，由於是將副空氣濾 淸器的外殼部與後擋泥板形成爲一體，所以即使設置副空 氣濾淸器而用其外殼部分就可以控制零件數量的增加。並 且由於不需要單獨將副空氣濾淸器支承到車體框架等，也 可以抑制安裝程序的增加。 藉由申請專利範圍第2項的發明，由於是隔著後輪將 空氣濾淸器與副空氣濾淸器分離配置到車體的兩側，所以 可以利用速克達型車輛的特質來有效利用空間地安裝副空 氣濾淸器。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） c 514613 A7 B7 五、發明説明（3 ) 藉由申請專利範圍第3項的發明，由於是將副空氣濾 淸器的進氣口在後擋泥板上朝向車體後方開口 .，所以副空 氣濾淸器可以吸進很少混入有後擋泥板上由於彈上來的灰 塵或水等的空氣，就可以拉長空氣過濾器的洗淨週期。 【發明的實施形態】 以下根據圖面來說明一種實施例。第1圖是本發明所 適用的速克達型車輛的側面圖，第2圖是這個速克達型車 輛的車體後部的內部構造的顯示圖，第3圖是同部分的平 面圖，第4圖是副空氣濾淸器部分的剖面圖（第3圖的 4 一 4線剖面圖，第5圖是車體後部的側面的作用的顯示 圖。 首先，針對車體全體來大槪說明。第1圖的圖號1是 前輪，2是前叉，3是前擋泥板，4是金屬製的前外殻， 5是金屬或樹脂製的前背面外殼，6是樹脂製的車把外殼 ，7是頭燈，8是車把。 車體中央部是作成腳承載部的低板式的腳踏板1 〇， 在其後方是設置有以預定高度向上方立起且朝後方延伸是 中空狀的上下開放的後外殼1 1。後外殼是金屬或樹脂製 的，上方的開口部則藉由前後方向較長的座墊1 2來開閉 。在後外殼1 .1內是設置有朝上方開放的行李箱1 3，內 部的容量很大可以用來收容安全帽等大型物品。 在腳踏板1 0的下方具備有通過車體中心朝前後方向 延伸的金屬管製的主框架1 4及將其後_部朝左右方向延 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） I 裝-- (請先閱讀背面之注意事項再填寫本頁) 、11 經濟部智慧財產局員工消費合作社印製 -6 - 514613 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明説明（4 ) 伸的橫管1 5，在主框架1 4的後端，是中介著將其中一 端樞支在朝後方突出的連桿支承部1 6的連桿1 7，而連 結著從擺動式動力單元1 8的下部朝前方延伸的臂部1 9 ’將這些連結點2 0 a及2 0 b作爲擺動中心讓擺動式動 力單元1 8可以自由上下擺動。 在擺動式動力單兀1 8的後端部的其中~側，是支承 著後輪2 1，且後避震單元2 2是被連結在該處與後框架 之間2 3，藉此讓擺動式動力單元1 8被懸掛到車體框架 的後部。 後框架2 3從平面圖來看是略成U字型，從前端到後 邰是以左右一對略平行地朝前後方向設置，後端部是相互 連接在一起一·體化，左右的各前端部則分別連結到橫管 1 5。主框架1 4、橫管1 5及後框架2 3則一體化構成 了車體框架。 . 如第2圖所示，在後框架2 3的後端處，備用輪胎安 裝管2 4朝上方突出且從後外殼1 1的背面部朝外部延伸 ，是用來支承備用輪胎2 5 (第1圖）。 擺動式動力單元1 8，是讓前側的四行程氣冷式引擎 3 0與後方的傳動箱3 1 —體化的構造·，引擎3 〇是略水 平朝前傾斜，擺動式動力單元1 8全體是形成爲前後方向 較長，在傳動箱3 1的後端其中一側支承著後輪2 1。 在傳動箱3 1上，是支承著引擎3 0的進氣用相對於 後述的副空氣濾淸器的空氣濾淸器3。在空氣濾淸器3 2 的前端部是設置有通氣槽3 3，從引擎3 0的氣缸頭上部 本紙張尺度適用中國國家標準（CNS ) Α4規格（210X297公慶） AWI ^1T (請先閱讀背面之注意事項再填寫本頁) 514613 A7 B7 五、發明説明（5) 連接著通氣管3 4，將引擎3 0的未燃燒氣體回收到通氣 槽，再從這裡回流到化油器（後述）。 (請先閲讀背面之注意事項再填寫本頁) 在後輪2 1的上方，配置有樹脂製的後擋泥板3 5， 是被支承到後框架2 3。這個支承部是被支承在後擋泥板 3 5的前後部分，前部是被一體形成且將朝上方突出的安 裝部3 5連結到從後框架2 3的橫管2 6朝下方突出的支 架2 7，後部是被一體形成且用螺栓3 8及螺母3 9將朝 上方突出的安裝部3 7連結到從後框架2 3的後端部朝下 方突出的支架2 7。 如第3圖所示，在後擋泥板3 5的前端部在隔著後輪 2 1的空氣濾淸器3 2的相反側的車體右側，是一體地設 置有副空氣濾淸器4 0。橡膠軟管4 1從副空氣濾淸器 4〇的底部向前方延伸然後連接到配置到副空氣濾淸器 4 0的前方的排廢氣淨化用的二次空氣控制閥4 2。 經濟部智慧財產局員工消費合作社印製 二次空氣控制閥4 2是內藏有用來控制空氣供給量的 空氣截斷閥、.與用於排廢氣逆流的單向閥也就是簧片閥。 簧片閥會防止來自於排氣通路的排廢氣逆流到空氣截斷閥 、及副空氣濾淸器。 空氣截斷閥，會以負壓管4 3將其與引擎的進氣側連 接在一起，在引擎減速時會隔斷供給到排氣通路的二次空 氣來防止滅音器內的復燃現象。 二次空氣控制閥4 2與引擎3 0之間是以橡膠軟管 4 4與金屬管4 5連接。橡膠軟管4 4在第3圖的平面圖 來看，是朝前方突出地彎曲且朝左右方向橫斷引擎3 ◦上 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -8 - 514613 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明説明（6 ) 方，在側面來看（第2圖）是作成略〈字型，且其中一端 側從車體右側向斜上方朝後方延伸，從二次空氣控制閥 4 2的前方連接到設置在其前面部的接頭4 2 a (第3圖 )。這個二次空氣控制閥4 2的接頭4 2 a，是朝前下方 傾斜地從二次空氣控制閥4 2的前面部一體地朝前方突出 ，而是與伴隨著擺動式動力單元1 8的擺動的橡膠軟管 4 4的移動方向（第2圖的箭頭A方向）大略一致。 另一端側會延伸到引擎3 0的左側，在第2圖可明顯 看出，會朝向引擎3 0的左側面朝斜後方且朝斜下方彎曲 以接頭4 5 a讓其與金屬管4 5的其中一端連接在一起’ 藉由固定接頭4 5 b來防止脫落（第3圖）。接頭4 5 a 的方向，則是與和擺動式動力單元1 8 —起擺動的金屬管 4 5的上端部的擺動方向（第2圖的箭頭B方向）大略相 同。 金屬管4 5是在引擎3 0的左側面朝上下方向延伸’ 另一端則繞入到引擎3 0的下側連接到引擎3 0的排氣通 路。在這個引擎3 0的排氣通路是連接著排氣管4 6的其 中一端。排氣管4 6是從引擎3 0下方朝車體右側伸出’ 會連接到配置在後輪2 1的右側的滅音器4 7。滅音益 4 7是位於副空氣濾淸器4 0的下方。 二次空氣控制閥4 2是被安裝在從車體右側的後框架 2 3朝下方突出的閥支架2 9。在連續於這個閥支架2 9 的部分支承著點火線圈4 8，從點火線圈4 8讓高強度纜 線4 9朝前方延伸，連接到四行程的氣冷式引擎3 0的火 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 批衣----；---1T------ (請先閱讀背面之注意事項再填寫本頁) -9 - 514613 A7 B7 五、發明説明（7) 星塞。 (請先閲讀背面之注意事項再填寫本頁) 如第4圖所示’副空氣濾淸器4 0是讓其外殻部5 0 與後擋泥板3 5形成爲一體，在其底部前端是一體地形成 有朝下方突出的接合管5 1 ，從下方把軟管4 1的其中一 端連接在這裡。 外殼部5 0是朝上方開放，在這個開口部收容著空氣 過濾器5 2 ’把頂板5 3從上方覆蓋上去，用從下方插入 的螺栓5 4來把頂板5 3與外殼部5 0 —體化。副空氣濾 淸器4 0內則藉由空氣過濾器5 2來區劃成下方的淸潔室 5 5與上方的髒污室5 6。 在髒污室5 6是連接著與頂板5 3形成爲一體的進氣 導管5 7。進氣導管5 7，是從頂板5 3的中央水平地朝 後方延伸，是從頂板5 3的後面部朝後方突出且在後擋泥 板3 5的上方向後方開口，從後方吸引後擋泥板3 5上的 空氣。從進氣導管5 7進入到髒污室5 6的空氣會通過空 氣過濾器5 2被淨化流向淸潔室5 5，成爲淸淨空氣被輸 送到二次空氣控制閥4 2。 經濟部智慧財產局員工消費合作社印製 第3圖中的圖號6 0是連接管，6 1是化油器。連接 管6 0其後端部是連接到空氣濾淸器3 2的前部與其淸潔 室連通，並且其前端部連接到化油器6 1。而在中間部連 接著從通氣槽3 3延伸出來的細管6 2，讓氣體回流到化 油器ο 1。化油益6 1是連接到引擎3 〇的進氣通路。 而如弟5圖所不’後外殻1 1是以設置在座墊1 2與 後框架2 3的後端的樞軸2 3 a爲中心，可以將前側部朝 本纸張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -10- 514613 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明説明（8) 上方轉動，且藉由支架6 3則可以保持其轉動狀態，就可 以維修配置在後外殼1 1的內側的後述的擺動式動力單元 相關部分等。第2圖所示的圖號6 4是油箱，是被配置在 後擋泥板3 5的上方，被支承在後框架2 3的後部。支架 6 3在收容狀態，是將前端支承在框架，將後端支承在後 擋泥板。 接下來說明本實施例的作用。在第3圖及第4圖可以 了解，由於是將副空氣濾淸器4 0的外殻部5 0與後擋泥 板3 5形成爲一體，不是單獨設置副空氣濾淸器4 0，而 可以控制零件數量的增加。並且不是將副空氣濾淸器4 0 安裝到後框架2 3，只要將後擋泥板3 5安裝到後框架 2 3即可完成，所以不需要支架等的特別副空氣濾淸器用 安裝構件，可以減少零件數量且抑制安裝程序的增加。 由於是將副空氣濾淸器4 0與空氣濾淸器3 2隔著後 輪2 1分離配置到車體的左右兩側，所以可以利用速克達 型車輛的特性讓後避震單元2 2的右側且在滅音器4 7的 上方有比較充裕的物品配設空間，就可以有良好空間配置 效率地配置副空氣濾淸器4 0。 並且，由第4圖可看出，設置在位於接近後外殼1 1 的右側面壁部內面的後擋泥板3 5的前端右端面的副空氣 濾淸器4 0，是使進氣導管5 7在後擋泥板3 5的上方朝 向後方開口，所以可從後外殼1 1與後擋泥板3 5所圍繞 起來的空間來吸引空氣。因此，可以吸進很少混入有由於 後輪2 1彈上來的灰塵或水等較不髒污的空氣，空氣過濾 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） ~ -11 - — ^1T (請先閱讀背面之注意事項再填寫本頁) 514613 A7 B7 五、發明説明（9 ) 器5 2較不容易產生堵塞就可以拉長空氣過濾器5 2的洗 淨週期。 (請先閱讀背面之注意事項再填寫本頁) 如第2圖及第3圖所示，是以橡膠軟管4 4連接在與 擺動式動力單元1 8 —體擺動的金屬管4 5與固定在後框 架2 3側的二次空氣控制閥4 2之間，並且由於是將該橡 膠軟管4 4配設成從平面圖看來是朝前方突起彎曲且朝左 右方向橫剖引擎3 0的上方，藉由橡膠軟管4 4的長彎曲 部的變形就可以容易地吸收伴隨擺動式動力單元1 8的擺 動所產生的金屬管4 5的上端與二次空氣控制閥4 2的間 隔變化。 除此之外，由第2圖可看出，是將橡膠軟管4 4作成 在側面方向來看是右〈字型，就可以使伴隨擺動式動力單 .元1 8的擺動所產生的橡膠軟管4 4的右側部分的移動方 向（箭頭A方向）與接頭4 2 a的突出方向大略一致，所 以在連接部不會產生扭轉不容易脫落。 經濟部智慧財產局員工消費合作社印製 即使在金屬管4 5側，藉由使接頭4 5 a的方向與擺 動方向（箭頭B方向）大略一致，同樣在連接部不會產生 扭轉不容易脫落。於是，就可以減少伴隨採用擺動式動力 單元1 8所產生的固有的現象，也就是可以減少在排廢氣 淨化裝置的二次空氣配管的連接部所產生的扭轉現象讓其 不容易脫落，是信賴度很高的連接構造。 並且，由於是將二次空氣控制閥4 2固定到後框架 2 3，所以擺動部分很接近擺動中心2 0 a、2 0 b ’其 結果是，由於擺動量很少所以很容易進行配管作業。但是 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -12- 514613 A7 B7 五、發明説明（10) 也可以將二次空氣控制閥4 2與上述傳統例同樣任意地設 置到滅音器4 7等的擺動式動力單元1 8側。而也可以更 換橡膠軟管4 4來任意使用金屬製軟性管或有彈性的樹脂 製軟管或彈性管。 【圖面說明】 第1圖是適用本實施例的速克達型車輛的側面圖。 第2圖是顯示上述速克達型車輛的主體後部的內部構 造的側面圖。 第3圖是同上部分的平面圖。 第4圖是副空氣濾淸器部分的剖面圖（第3圖的4 -4線剖面圖）。 第5圖是針對第1圖的速克達型車輛後部的作用的說 明圖。 (請先閲讀背面之注意事項再填寫本頁) 裝· 經濟部智慧財產局員工消費合作社印製 元 單 力 動 心 殼 架 式中 外墊框管桿動動輪 1 後座主橫連擺擺後 _····_ _*♦· ···*·♦ 一說 1 2 4 5 7 8 ο 1 1—- IX 1± 1± 1± 1± CXI CN3 圖 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -13- 514613 A7 B7 五、發明説明（11) 2 3 :後框架 3〇：引擎 (請先閱讀背面之注意事項再填寫本頁) 31:傳動箱 3 2 :空氣濾淸器 3 3 :通氣槽 3 5 :後擋泥板 4〇：副空氣濾淸器 4 2 :二次空氣控制閥 4 4 :橡膠軟管 4 5 :金屬管 4 6 :排氣管 5〇：外殼部 5 2 :空氣過濾器 5 3 :頂板 5 7 :進氣導管 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -14 -514613 A7 B7 V. Description of the invention (1) [Technical field to which the invention belongs] A suitable invention relates to an exhaust gas purification device of a speed keda vehicle. (Please read the precautions on the back before filling this page.) [Knowledge technology] Conventional Scooter locomotive with swinging power unit is equipped with a secondary air control valve and is used to transport clean air. The exhaust gas purification device of the engine to the secondary air filter of this secondary air control valve is disclosed in Japanese Patent Application Laid-Open No. 6-5 0 1 4 0, in which the secondary air control valve is mounted to the silencer A structure in which a secondary air filter, which is formed separately from other components, is supported at the rear end of the vehicle body frame at the rear, and is connected to the secondary air control valve and the secondary air filter by a hose. [Problems to be Solved by the Invention] The employee consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs printed the traditional example as described above. If the auxiliary air filter is installed independently, the number of parts of the auxiliary air filter itself will increase. Mounting on the body frame side and installing brackets will increase the number of parts and increase the number of installation procedures. It is also necessary to consider the characteristics of the Scooter vehicle in the design to increase the space efficiency to configure the auxiliary air filter, and also to consider how to improve the durability of the auxiliary air filter. [Means to solve the problem] The invention of item No. 丨 of the patent application scope of the exhaust gas purification device of the Sukoda vehicle used to solve the above-mentioned problem is to integrate the engine and the transmission case and to support the rear wheels The paper size of the swing-type power book to the rear of the transmission case is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) -4- 514613 A7 _ — _ _B7_______ V. Description of the invention (2) (Please read the first Note: Please fill in this page again.) The Sukhoda type vehicle is suspended from the rear of the car body, and the secondary air control valve sends secondary air from the auxiliary air filter and the gastric organ to the exhaust passage of the engine to purify the exhaust gas. It is characterized in that a rear fender is arranged above the rear wheel and is supported to the vehicle body frame, and a housing portion of the auxiliary air filter is formed integrally with the rear fender. The invention of the second scope of the patent application, the first scope of the above patent scope of the patent application, wherein the air intake filter for the intake air of the engine is arranged above the transmission case of the swing type power unit and on one side of the rear wheel, and The auxiliary air filter is disposed on the opposite side of the vehicle body from the air filter through the rear wheels. The invention in the third scope of the patent application, in the first scope of the above patent scope, wherein the air inlet of the auxiliary air filter is opened at the rear fender 1: toward the rear of the vehicle body. [Effects of the Invention] The Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs has printed the invention of the first scope of the patent application. Since the casing of the auxiliary air filter is integrated with the rear fender, even if the auxiliary air is provided, The filter can be used to control the increase in the number of parts with its housing part. Furthermore, since it is not necessary to separately support the auxiliary air filter to the vehicle body frame, etc., it is possible to suppress an increase in installation procedures. With the invention in the second scope of the patent application, since the air filter and the auxiliary air filter are separated and arranged on both sides of the car body through the rear wheels, the characteristics of the Sukoda vehicle can be effectively used. Install the secondary air filter spatially. This paper size is in accordance with Chinese National Standard (CNS) A4 (210X297 mm) c 514613 A7 B7 V. Description of invention (3) The invention in item 3 of the scope of patent application, because it is the intake of the secondary air filter The mouth is open on the rear fender toward the rear of the car body, so the secondary air filter can suck in air that is rarely mixed with dust or water that pops up from the rear fender, which can lengthen the air filter. Washing cycle. [Embodiment of the invention] An embodiment will be described below with reference to the drawings. FIG. 1 is a side view of a speed keda vehicle to which the present invention is applied, and FIG. 2 is a view showing an internal structure of a rear portion of the body of the speed keda vehicle, and FIG. 3 is a plan view of the same portion. The figure is a cross-sectional view of the sub-air filter (a cross-sectional view taken along line 4-4 in FIG. 3, and FIG. 5 is a view showing the role of the side of the rear part of the vehicle body. First, the entire body will be explained. The drawing number in Figure 1 is the front wheel, 2 is the front fork, 3 is the front fender, 4 is the front shell made of metal, 5 is the front and rear shell made of metal or resin, and 6 is the handlebar shell made of resin. 7 is a headlight, and 8 is a handlebar. The central part of the vehicle body is a low-plate type footrest 1 which is a foot-carrying part. A rear part is provided with a hollow vertical opening that rises upward at a predetermined height and extends rearward. The rear shell 1 1. The rear shell is made of metal or resin, and the upper opening is opened and closed by a long seat cushion 12 in the front-rear direction. Inside the rear shell 1.1 is a trunk that opens upward. 1 3, The internal capacity is large enough to accommodate large items such as hard hats. 1 0 Below it is equipped with a main frame 14 that extends through the center of the car body in the forward and backward direction, and the rear part is extended in the left and right direction. This paper size applies the Chinese National Standard (CNS) A4 (210X297 mm) I Pack- -(Please read the precautions on the back before filling out this page), 11 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs -6-514613 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (4) At the rear end of the main frame 14, the horizontal pipe 15 is connected with a swinging power unit 1 8 through a link 17 that pivots one end to a link support portion 16 protruding rearward. The lower portion of the forwardly extending arm portion 19 'uses these connection points 2 a and 2 0 b as the swing center to allow the swinging power unit 18 to swing freely up and down. At the rear end of the swinging power unit 18 Among them, the side is supporting the rear wheel 21, and the rear suspension unit 22 is connected between the rear frame and the rear frame 23, so that the swinging power unit 18 is suspended to the rear of the body frame. The rear frame 2 3 is slightly U-shaped from the plan view. From the end to the back, the left and right pairs are arranged in parallel to the front and back direction, and the rear ends are connected to each other. The left and right front ends are respectively connected to the horizontal pipe 15. The main frame 14 and the horizontal The tubes 15 and the rear frame 23 are integrated to form the body frame. As shown in Fig. 2, at the rear end of the rear frame 23, the spare tire mounting tube 2 4 projects upward and from the rear shell 1 1 The rear part of the rear is extended to support the spare tire 2 5 (picture 1). The swing-type power unit 18 is a four-stroke air-cooled engine 30 on the front side and a transmission case 3 1 on the rear side. The structure of the engine 30 is inclined slightly horizontally forward, and the entire swing-type power unit 18 is formed to be long in the front-rear direction. The rear wheel 21 is supported on one side of the rear end of the transmission case 31. The transmission case 31 is an air filter 3 for supporting the intake air of the engine 30 with respect to a sub-air filter described later. The front end of the air filter 3 2 is provided with a vent groove 3 3. From the upper part of the cylinder head of the engine 30, the paper size is applicable to the Chinese National Standard (CNS) Α4 specification (210X297 public holiday) AWI ^ 1T (Please read first Note on the back, please fill in this page again) 514613 A7 B7 V. Description of the invention (5) Connect the vent pipe 3 4 to recover the unburned gas from the engine 30 to the vent groove, and then return to the carburetor from here (described later) . (Please read the precautions on the back before filling in this page.) Above the rear wheel 21, there is a rear fender 3 5 made of resin, which is supported to the rear frame 23. This support portion is supported at the front and rear portions of the rear fender 35, and the front portion is an integrally formed mounting portion 35 that projects upward and is connected to a bracket that projects downward from the cross tube 26 of the rear frame 23 The rear part is a bracket 27 which is integrally formed and which connects the mounting part 37 which protrudes upwards with the bolt 38 and the nut 39, which protrudes downward from the rear end part of the rear frame 23. As shown in FIG. 3, a sub-air filter 4 is integrally provided at the front end portion of the rear fender 35 on the right side of the vehicle body opposite to the air filter 32 of the rear wheel 21. 0. The rubber hose 41 extends forward from the bottom of the auxiliary air filter 40 and is connected to a secondary air control valve 42 for exhaust gas purification disposed in front of the auxiliary air filter 40. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. The secondary air control valve 42 is a built-in air shut-off valve for controlling the air supply volume, and a check valve for exhaust gas countercurrent, which is a reed valve. The reed valve prevents exhaust gas from the exhaust passage from flowing back to the air shutoff valve and the secondary air filter. The air shutoff valve is connected to the intake side of the engine by a negative pressure pipe 43. When the engine is decelerating, it shuts off the secondary air supplied to the exhaust passage to prevent re-ignition in the muffler. The secondary air control valve 42 and the engine 30 are connected by a rubber hose 44 and a metal pipe 45. Seen from the plan view of Figure 3, the rubber hose 4 4 is bent forward and traverses the engine 3 in the left-right direction. ◦ The upper paper size is applicable to the Chinese National Standard (CNS) A4 (210X297 mm) -8- 514613 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (6) The side view (Figure 2) is made slightly <-shaped, and one end side is diagonally upward from the right side of the car body. It extends rearward and is connected from the front of the secondary air control valve 42 to the connector 4 2 a (FIG. 3) provided in the front part. The joint 4 2 a of the secondary air control valve 42 is integrally protruded forward from the front portion of the secondary air control valve 4 2 and tilts forward and downward, and is connected with the swing of the swing type power unit 18 The movement direction (direction of arrow A in FIG. 2) of the rubber hose 4 4 is almost the same. The other end side will extend to the left side of the engine 30. It can be clearly seen in Figure 2 that the left side of the engine 3 0 will be inclined obliquely rearward and bent downward downward to connect it with the metal pipe 4 5 One end is connected together 'to prevent it from falling off by fixing the connector 4 5 b (Figure 3). The direction of the joint 4 5 a is almost the same as the swinging direction of the upper end portion of the metal pipe 45 that swings from the swinging power unit 18 (direction of arrow B in FIG. 2). The metal pipe 45 extends from the left side of the engine 30 in the up-down direction 'and the other end is wound around the exhaust passage of the engine 30 and connected to the engine 30. The exhaust passage of this engine 30 is connected to one end of an exhaust pipe 46. The exhaust pipe 46 is extended from below the engine 30 to the right side of the vehicle body, and is connected to a muffler 47 arranged on the right side of the rear wheel 21. The sound elimination benefit 47 is located below the auxiliary air filter 40. The secondary air control valve 42 is a valve bracket 29 that is attached to the rear frame 23 that protrudes downward from the right side of the vehicle body. The ignition coil 4 8 is supported in a portion continuous to this valve bracket 2 9. The high-strength cable 4 9 extends forward from the ignition coil 4 8 and is connected to a four-stroke air-cooled engine 3 0. The paper size is applicable. China National Standard (CNS) A4 Specification (210X297mm) Approved Clothing ----; --- 1T ------ (Please read the precautions on the back before filling this page) -9-514613 A7 B7 5 2. Description of the invention (7) Star plug. (Please read the precautions on the back before filling out this page) As shown in Figure 4, the 'sub air filter 40' is formed by integrating its housing part 50 with the rear fender 35, and at the bottom front end A joint tube 5 1 protruding downward is integrally formed, and one end of the hose 41 is connected here from below. The housing part 50 is opened upward, and an air filter 5 2 ′ is housed in this opening. The top plate 5 3 is covered from above, and the top plate 5 3 and the housing part 50 are integrated with the bolts 5 4 inserted from below. Into. Inside the auxiliary air filter 40, an air filter 5 2 is used to distinguish the lower clean room 55 and the upper dirty room 56. The dirty room 56 is connected to an intake duct 57 formed integrally with the ceiling plate 53. The intake duct 57 extends horizontally from the center of the top plate 53 to the rear, and projects rearward from the rear portion of the top plate 53 and opens rearward in the upper direction of the rear fender 35 to suck the rear fender from the rear. Air on plates 3 to 5. The air entering the dirty room 56 from the air inlet duct 57 is purified by the air filter 5 2 and flows to the clean room 55, and the clean air is sent to the secondary air control valve 42. Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. Figure No. 60 in the third figure is the connecting pipe and 61 is the carburetor. The rear end of the connecting pipe 60 is connected to the front of the air filter 32 and communicates with its clean room, and the front end is connected to the carburetor 61. At the middle part, a thin tube 62 extending from the vent groove 33 is connected to allow the gas to return to the carburetor ο. Huayou Yi 61 is an intake passage connected to the engine 30. As shown in Figure 5, the rear shell 1 1 is centered on a pivot 2 3 a provided at the rear end of the seat cushion 12 and the rear frame 2 3, and the front side can be applied to Chinese paper standards to the Chinese national standard. (CNS) A4 specification (210X297 mm) -10- 514613 Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (8) Rotating above, and the holder 6 3 can maintain its rotating state, just Relevant parts, etc., of a swing type power unit, which will be described later, which are arranged inside the rear case 11 can be repaired. Reference numeral 64 shown in FIG. 2 is a fuel tank, which is arranged above the rear fender 35 and is supported at the rear of the rear frame 23. In the storage state, the bracket 63 supports the front end to the frame and the rear end to the rear fender. Next, the effect of this embodiment will be described. As can be understood from FIGS. 3 and 4, since the housing portion 50 of the auxiliary air filter 40 is integrated with the rear fender 35, the auxiliary air filter 40 is not provided separately, but You can control the increase in the number of parts. In addition, instead of attaching the auxiliary air filter 40 to the rear frame 23, it is only necessary to attach the rear fender 35 to the rear frame 23, so there is no need for a special auxiliary air filter mounting member such as a bracket. It is possible to reduce the number of parts and suppress an increase in the installation program. Since the auxiliary air filter 40 and the air filter 3 2 are separated from the left and right sides of the vehicle body via the rear wheel 2 1, the characteristics of the Scooter vehicle can be used to make the rear suspension unit 2 2 On the right side, there is ample space for arranging items on top of the muffler 47, so that the sub-air filter 40 can be efficiently arranged with good space. In addition, it can be seen from FIG. 4 that the auxiliary air filter 40 provided on the right end surface of the front end of the rear fender 35 located near the inner surface of the right side wall portion of the rear case 1 1 is an intake duct 5 7 Since the upper fender 35 is opened toward the rear, air can be sucked from the space surrounded by the rear shell 11 and the rear fender 35. Therefore, it is possible to suck in the air that is rarely mixed with dust or water bounced from the rear wheel 21, and the paper size of the paper is applicable to China National Standard (CNS) A4 (210X297 mm) ~ -11 -— ^ 1T (Please read the precautions on the back before filling this page) 514613 A7 B7 V. Description of the invention (9) The device 5 2 is less prone to clogging, so the cleaning cycle of the air filter 5 2 can be lengthened. (Please read the precautions on the back before filling this page.) As shown in Figure 2 and Figure 3, rubber hose 4 4 is connected to the swinging power unit 1 8-the metal pipe 4 5 that is oscillating and fixed. Between the secondary air control valve 4 2 on the rear frame 23 side, and because the rubber hose 4 4 is arranged to project forward and bend in a plan view and cross the engine 30 in a left-right direction. The deformation of the long bent portion of the rubber hose 44 can easily absorb the change in the interval between the upper end of the metal pipe 45 and the secondary air control valve 42 caused by the swing of the swing power unit 18. In addition, it can be seen from the second figure that the rubber hose 4 4 is made to be a right <-shape when viewed from the side, and the rubber generated by the swing of the swing type power unit can be made. The moving direction (direction of arrow A) of the right part of the hose 44 is almost the same as the protruding direction of the joint 4 2 a, so it does not twist at the connection portion and is not easy to fall off. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Even on the side of the metal pipe 4 5, the direction of the joint 4 5 a and the swinging direction (direction of arrow B) are almost the same, and the connection part will not be twisted and will not fall off easily. Therefore, it is possible to reduce the inherent phenomenon caused by the use of the swinging power unit 18, that is, to reduce the twisting phenomenon at the connection part of the secondary air piping of the exhaust gas purification device, so that it is not easy to fall off. High degree of connection structure. Further, since the secondary air control valve 42 is fixed to the rear frame 23, the swing portion is close to the swing centers 20a, 20b '. As a result, the piping operation is easy because the swing amount is small. However, this paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) -12- 514613 A7 B7 V. Description of the invention (10) The secondary air control valve 4 2 can also be arbitrarily set to the same conventional example as above. Muffler 47, etc. Swing type power unit 18 side. Alternatively, the rubber hose 44 can be replaced to use a flexible metal hose or a flexible resin hose or flexible hose. [Brief Description of the Drawings] Fig. 1 is a side view of a speed keda vehicle to which this embodiment is applied. Fig. 2 is a side view showing the internal structure of the rear part of the main body of the above-mentioned vehicle. Fig. 3 is a plan view of the same part. Fig. 4 is a cross-sectional view of a sub-air filter portion (a cross-sectional view taken along line 4-4 in Fig. 3). Fig. 5 is an explanatory view of the action of the rear portion of the Sukoda vehicle of Fig. 1; (Please read the precautions on the back before filling out this page) Equipment · Printed by the Ministry of Economic Affairs, Intellectual Property Bureau, Consumer Cooperatives, Yuandanli Movable Shell Frame, Middle and Outer Cushion Frame, Tube Rods, Rotary Wheels 1 After the rear seat is horizontally swinging _ ·· ·· _ _ * ♦ · ··· * · ♦ Just say 1 2 4 5 7 8 ο 1 1—- IX 1 ± 1 ± 1 ± 1 ± CXI CN3 The size of this paper applies to China National Standard (CNS) A4 (210X297 mm) -13- 514613 A7 B7 V. Description of the invention (11) 2 3: Rear frame 30: Engine (please read the precautions on the back before filling this page) 31: Gearbox 3 2: Air filter Device 3 3: Ventilation tank 3 5: Rear fender 4 0: Secondary air filter 4 2: Secondary air control valve 4 4: Rubber hose 4 5: Metal pipe 4 6: Exhaust pipe 50: Housing Department 5 2: Air filter 5 3: Top plate 5 7: Intake ducts Printed by the Intellectual Property Bureau Staff Consumer Cooperatives of the Ministry of Economics This paper is printed in accordance with Chinese National Standard (CNS) A4 (210X 297 mm) -14-