經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（1 ) 【發明所屬之技術領域】 本發明係關於：呈一體地具備引擎及用以將該引擎的 驅動力傳達到驅動輪的變速機，且可擺動自如地被支承於 車體框架上的搖擺式動力單元。 【先行技術】 這種搖擺式動力單元係適宜作爲小型的兩輪式機車或 三輪式機車的簡便的動力源，其中的一例是已經揭示於曰 本特許第2 6 4 9 1 7 9號公報。這個公報所揭示的搖擺 式動力單元係將配置在搖擺式動力單元的前部的引擎的汽 缸體的軸線朝車體前方延伸，且將設在高剛性的引擎曲軸 箱的上面的吊架藉由樞軸可朝上下擺動自如地樞支於車體 框架上。 【發明所欲解決之課題】 然而，這種汽缸體的軸線朝車體前方延伸的搖擺式動 力單元，如果前述樞軸的位置大幅地往後方遠離汽缸頭的 話，因爲汽缸頭會隨著搖擺式動力單元的擺動而朝上下方 向大幅地移動，所以會發生該汽缸頭容易與腳踏板等的其 他構件互相干擾的問題。想要迴避這種問題’雖然將樞軸 的位置儘量往前方移動以靠近汽缸頭的話即可’但是’該 日本特許第2 6 4 9 1 7 9號公報所揭示的結構係將曲軸 箱與汽缸體由不同的構件所構成的，因此依然也存有難以 將樞軸的位置往前移動的問題。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） — —— — — — — — — — — — — - I 11 l· I I I « — — — — — — II |> i (請先閱讀背面之注意事項再填寫本頁) -4- 4495 63 經濟郤智慧財產局員工消费合作社印" A7 B7 五、發明說明（2 ) 亦即，雖然爲了避免造成供收容活塞和汽缸的汽缸體 的變形，必須將受到較大荷重的吊架設置在剛性較高的曲 軸箱，但是如果是以不同的構件來分別構成曲軸箱和汽缸 體的話，爲了要進行其分割面的加工，就無法將吊架超越 該分割面且延伸到汽缸體這一側。因此，必須將設在曲軸 箱上的吊架的前端只能終止於供結合汽缸體的分割面的後 方位置，如此一來，必然地樞軸的位置就會較位於車體後 方而產生前述的問題。 本發明係有鑒於以上的情事而開發完成的，其目的爲 提供被製作成：將用以將搖擺式動力單元樞支於車體框架 的吊架儘可能地配置車體前方側，因而使得汽缸頭不易與 腳踏板等的其他構件互相干擾的搖擺式動力單元。 【用以解決課題之手段】 爲了達成上述目的，本案的請求項1的發明所提供的 技術方案係一種搖擺式動力單元，係可擺動自如地被支承 於兩輪式機車、三輪式機車的車體框架上，且呈一體地具 備引擎及用以將該引擎的驅動力傳達到驅動輪的變速機之 搖擺式動力單元，其特徵爲： 將引擎區塊分割成：包含朝車體前方延伸之供汽缸頭 結合用的汽缸體及曲軸箱的半部的第1引擎區塊；以及包 含曲軸箱的另外半部的第2引擎區塊，並且將用以將引擎 藉由樞軸樞支於車體框架的吊架呈一體地形成在前述第1 引擎區塊的曲軸箱的半部》 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公髮） --.------ 裝 - ---：---- 訂-------線 (請先閱讀背面之注意事項？寫本頁) -5- 443563 A7 __B7____ 五、發明說明（3 ) 根據上述構成方式，引擎區塊係分割成第1引擎區塊 以及第2引擎區塊，在於包含汽缸體和曲軸箱的半導體基 板的第1引擎區塊的前述曲軸箱半部係呈一體地形成有可 藉由樞軸來將引擎樞支於車體框架的吊架，所以不會造成 加工上的障礙，即可將樞軸的位置設在充分地接近汽缸頭 之處。其結果，當引擎在樞軸的外周進行擺動時，汽缸頭 朝上下方向移動的範圍變小，能夠避免與較踏板等的其他 構件發生干擾。 請求項2所述的發明的技術方案，係提供一種搖擺式 動力單元，係針對請求項1的結構中，將化油器配置在樞 軸的正後方的位置，並以吸氣管來連接著這個化油器與汽 缸頭u 根據這種構成方式，因爲是將化油器配置在被設置在 充分地接近於汽缸頭的樞軸的正後方的位置，所以可縮短 連接著化油器與汽缸頭的吸氣管的長度，進而可提高引擎 輸出力量。 ----.--------裝-----：----訂--- - ----線 {靖先聞讀背面之注意事項ιφν寫本頁) 經濟部智慧財產局員工消費合作社印製 的 發 的 明 發 本 的 示 所 圖 態附 形據 施依。 實，態 的下形 明以施 明 發 本 明 說 來 例 施Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to: an engine that is integrally provided and used to transmit the driving force of the engine to the driving wheels The transmission is a swing-type power unit that is swingably supported on the body frame. [Advanced technology] This type of rocking power unit is suitable as a simple power source for a small two-wheeled locomotive or a three-wheeled locomotive. An example of this is disclosed in Japanese Patent No. 2 6 4 9 1 7. The swing-type power unit disclosed in this publication extends the axis of the cylinder block of the engine disposed at the front of the swing-type power unit toward the front of the vehicle body, and uses a hanger provided on the upper surface of the crankcase of the highly rigid engine by The pivot shaft is pivotably supported on the vehicle body frame to swing up and down. [Problems to be Solved by the Invention] However, if the axis of the cylinder block extends toward the front of the vehicle body, if the position of the pivot is farther away from the cylinder head, the cylinder head will follow the swing type. The swing of the power unit largely moves in the up-and-down direction, so that the problem that the cylinder head easily interferes with other members such as a foot pedal occurs. I want to avoid such a problem, 'Although it is sufficient to move the position of the pivot as far forward as possible to get closer to the cylinder head', 'the structure disclosed in this Japanese Patent No. 2 6 4 9 1 7 9 is that the crankcase and the The cylinder block is composed of different components, so there is still a problem that it is difficult to move the position of the pivot forward. This paper size applies to Chinese National Standard (CNS) A4 (210 X 297 mm) — — — — — — — — — — — — I 11 l · III «— — — — — — II | > i (Please read the precautions on the back before filling this page) -4- 4495 63 Printed by the Economic and Intellectual Property Bureau Staff Consumer Cooperatives " A7 B7 V. Description of the Invention (2) That is, although in order to avoid causing pistons and cylinders to be accommodated For the deformation of the cylinder block, it is necessary to set a hanger that receives a larger load to a crankshaft with higher rigidity. However, if the crankcase and the cylinder block are formed by different members, in order to process the split surface, It is impossible to extend the hanger beyond the dividing plane and extend to the side of the cylinder block. Therefore, it is necessary to terminate the front end of the hanger provided on the crankcase only at the rear position of the split surface for combining the cylinder block. In this way, the position of the pivot will inevitably be located behind the vehicle body and the aforementioned problem. The present invention has been developed in view of the above circumstances, and an object thereof is to provide a suspension frame for pivoting a swing-type power unit to a vehicle body frame as far as possible to the front side of the vehicle body, thereby making the cylinder Swing-type power unit with which the head does not easily interfere with other components such as a foot pedal. [Means to solve the problem] In order to achieve the above object, the technical solution provided by the invention of claim 1 of the present case is a swing-type power unit, which is a vehicle that can be swingably supported on a two-wheel locomotive or a three-wheel locomotive. The body frame is a swing-type power unit that is integrally provided with an engine and a transmission for transmitting the driving force of the engine to the driving wheels, and is characterized in that the engine block is divided into: The first engine block of the cylinder block and the half of the crankcase for the combination of the cylinder heads; and the second engine block of the other half of the crankcase, which will be used to pivot the engine to the vehicle by a pivot The hanger of the body frame is integrally formed in the half of the crankcase of the aforementioned 1st engine block. "This paper size applies to China National Standard (CNS) A4 (210 X 297). ----------- -Installation----: ---- Order ------- line (Please read the precautions on the back first? Write this page) -5- 443563 A7 __B7____ 5. Description of the invention (3) According to the above structure The engine block is divided into the first engine block and the second engine block Since the crankcase half of the first engine block including the semiconductor substrate of the cylinder block and the crankcase is integrally formed with a hanger that can pivotally support the engine to the body frame by a pivot, it does not As a result of processing obstacles, the position of the pivot can be set sufficiently close to the cylinder head. As a result, when the engine swings on the outer periphery of the pivot, the range in which the cylinder head moves in the up-down direction becomes smaller, and interference with other members such as pedals can be avoided. The technical solution of the invention described in claim 2 is to provide a swing type power unit. According to the structure of claim 1, the carburetor is arranged directly behind the pivot, and is connected by an air suction pipe. According to this configuration, the carburetor and the cylinder head u are arranged in a position sufficiently close to the rear of the cylinder head's pivot, so the connection between the carburetor and the cylinder can be shortened. The length of the suction pipe of the head can increase the engine output. ----.-------- Equipment -----: ---- Order -------- Line {Jingxian Wen read the precautions on the back ιφν write this page) Ministry of Economic Affairs The instructions of the Intellectual Property Bureau staff consumer cooperatives issued the instructions for the presentation of the Mingfa version attached to the documents. The following forms of reality and state are explained by Shi Mingfa and Ben Ming.
TX 式 1 輪 第兩 一 型 圖達 1 克 第速 係 圖 的圖 明面 發側 本體 示整 顯的 係車 圖機 第 4 著的 沿中 係圖 圖 3 3 第 第著 ; 沿 圖係 大圖 擴 4 的第 位 · ’ 部圖 要面 重斷 ^'、7 1 圖線所 第 1 3 頭 ， 第 I 箭 例係 3 由 施圖的 ， 實 2 中線 種第圖 4 本紙張疋度適用中國國家標準（CNS)A4規格（210 * 297公釐〉 -6- 4495 63 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（4 ) 示方向的斷面圖：第5圖係沿著第3圖中的5 - 5線的斷 面圖；第6圖係係沿著第3圖中的6 _ 6線的斷面圖；第 7圖係係沿著第3圖中的7 — 7線的斷面圖；第8圖係第 2圖的重要部位的擴大圖：第9圖係係沿著第8圖中的9 -9線的斷面圖；第1 0圖係動力單元的左側面圖；第 1 1圖係動力單元於組裝時的作用說明圖。 如第1圖和第2圖所示，具備：受到轉向車把1 1來 操控其方向的前輪W ί與受搖擺式動力單元p所驅動的後 輪W r的速克達型兩輪式機車V的車體框架f係分割成： 前框架1 2 ;中間框架1 3以及後框架1 4的三個部分。 前樞架1 2係由呈一體地具備有：頭管1 2 i、下管1 2 2 以及腳踏板支承部1 2 3的鋁合金的鑄造品所構成的。利用 樞軸1 5將動力單元P可上下擺動自如地支承的中間框架 1 3係由鋁合金的鑄造品所構成，且結合於前框架1 2的 後端=延伸於動力單元P的後上方的後框架1 4係由環狀 的管材所構成，燃料油箱1 6是被支承在後框架1 4的上 面。安全帽收容盒1 7被支承於中間框架1 7的上面，利 用呈一體地具有坐墊1 8的外罩體1 9可開閉自如地覆蓋 著安全帽收容盒1 7以及燃料油箱1 6。 動力單元P係由：將汽缸朝向車體前方配置的水冷式 單汽缸4行程引擎E :以及從引擎E的左側面朝車體後方 延伸的皮帶式無段變速機T呈一體地結合而成的，皮帶式 無段變速機T的後部上面係藉由後避震器2 0來結合於中 間框架1 3的後端。皮帶式無段變速機T的上面是支承著 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -----— ----I--裝 i — ^—^— — —訂—I -線-· {請先W讀背面之注意事項再垓寫本頁) 449563 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（5 ) 空氣濾淸器2 1以及化油器2 4，皮帶式無段變速機丁的 右側面係支承著排氣管2 2，引擎E的下面則支承著一個 可豎起和伏倒的腳架2 3。在皮帶式無段變速機T的左側 面係有突出著一個踩踏式起動桿2 5的軸桿2 6，這個軸 桿2 6的前端係設有一個曲柄狀的腳踏桿2 7。 由第3圖〜第5圖可看出，引擎E係具備：受到沿著 曲軸3 1朝鉛直線方向延伸的分割面P i分割的第1引擎區 塊3 2以及第2引擎區塊3 3 ，第1引擎區塊3 2係構成 引擎區塊3 2!以及曲軸箱的半部3 22，並且第2引擎區 塊3 3係構成曲軸箱的另外半部。第1引擎區塊3 2的前 端係間介著分割面P 2來與汽缸頭3 4相結合，汽缸頭3 4 的前端係間介著分割面P 3來與汽缸頭外罩3 5相結合。第 1、第2引擎區塊3 2、3 3的右側面係間介著分割面P ! 來與發電機外蓋3 6相結合。 皮帶式無段變速機T係具備：間介著分割面P 5而被結 合的右側之第1變速機機殼3 7以及左側的第2變速機機 殼3 8。第1變速機機殻3 7的前部右側面係間介著分割 面P 6來結合於第1、第2引擎區塊3 2、3 3的左側面。 又，第1變速機機殼3 7的後部右側面係間介著分割面P 7 來結合於減速機機殼3 9。 如第3圖所示，可滑動自如地嵌合於內裝在第1引擎 區塊3 2內的汽缸4 1的內部的活塞4 2係藉由連桿4 3 連接到曲軸31。凸輪軸桿44係可旋轉自如地被支承於 汽缸頭3 4 ，設在汽缸頭3 4的未圖示的進氣閥以及排氣 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） — Ji.il! — ·裝 *il·!訂·!---- 線〜J (請先閱讀背面之注意事項再域寫本頁) -8 - 4495 63 A7 B7 五、發明說明（6 ) 閥係受到前述凸輪軸桿4 4的驅動而進行開閉。被收容在 第1引擎區塊3 2的鏈條通路3 2 3內的正時鏈條4 5係 繞掛在裝在曲軸3 1上的驅動鏈輪4 6以及裝在凸輪軸桿 44上的從動鏈輪47上。因此，曲軸3 1每旋轉2圈時 ，凸輪軸桿4 4就旋轉1圈。 設在曲軸3 1的右側的交流發電機4 8係被前述發電 機外蓋3 6所覆蓋，在該發電機外蓋3 6的右側設有散熱 水箱4 9 。爲了將冷卻風供應到散熱水箱4 9 ，被安裝固 定在曲軸3 1的右端的冷卻風扇5 0係被配置在交流發電 機4 8以及冷卻水箱4 9之間。又，在於內部收容有調溫 器5 1的調溫器外殼5 2係間介著分割面？8來結合於汽缸 頭3 4的右側面，設在凸輪軸桿4 4的右端的冷卻水泵浦 5 3係被收容在由汽缸頭3 4以及調溫器外殼5 2所圍繞 的空間= 在於突出到第1變速機機殼3 7以及第2變速機機殼 3 8的內部的曲軸3 1的左端，設有皮帶式無段變速機T 的輸入旋轉構件也就是驅動滑輪5 4。驅動滑輪5 4係具 備：被固定於曲軸3 1的固定側滑輪半體5 5 ;以及可相 對於固定側滑輪半體5 5進行靠近和分開的可動側滑輪半 體5 6 ，可動側滑輪半體5 6係受到隨著曲軸3 1的迴轉 數的增加而朝半徑方向外側移動的離心配重塊5 7朝向靠 近固定側滑輪半體5 5的方向推迫。 設在被支承於第1變速機機殼3 7的後部以及減速機 機殻3 9之間的輸出軸5 8上的從動滑輪5 9係具備：被 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再瑋寫本頁) 裝 ill· — — — 訂----------線- 經濟部智慧財產局員工消費合作社印製 -9- A7 4495 63 ___B7_______ 五、發明說明（7 ) 支承於輸出軸5 8之可相對旋轉的固定側滑輪半導體基板 6 0 ;以及以及可相對於固定側滑輪半體6 0進行靠近和 分開的可動側滑輪半體6 1 ，可動側滑輪半導體基板6 1 係被彈簧6 2朝向固定側滑輪半體6 0彈迫，並且在於固 定側滑輪半導體基板6 0與輸出軸5 8之間，設有一個機 車起步用離合器6 3。並且在驅動滑輪5 4與從動滑輪 5 9之間，牽掛著無端狀的V型皮帶6 4。 在於第1變速機機殼3 7的後部以及減速機機殻3 9 之間，係支承著與前述輸出軸5 8平行的中間軸6 5以及 車軸6 6 ，在這些輸出軸5 8 '中間軸6 5以及車軸6 6 之間設有減速齒輪組6 7。並且在於貫穿過減速機機殼 3 9而突出到右側的車軸6 6的右端係設有後輪Wr。 引擎E的曲軸3 1的旋轉被傳達到皮帶式無段變速機 T的輸入構件也就是驅動滑輪5 4，並且從該驅動滑輪 5 4依序地經由V型皮帶6 4、從動滑輪5 9、機車起步 用離合器6 3以及減速齒輪組6 7而傳遞到後輪Wr。 當引擎E進行低速迴轉時，作用於驅動滑輪5 4的離 心配重塊5 7的離心力較小，因此在受到從動滑輪5 9的 彈簧6 2的彈迫之下，固定側滑輪半體6 0以及可動側滑 輪半體6 1之間的溝寬度減少，變速比維持在低速檔。從 這種狀態起，曲軸3 1的迴轉數增加的話，作用於驅動滑 輪5 4的離心配重塊5 7的離心力增加，驅動滑輪5 4的 固定側滑輪半體5 5以及可動側滑輪半體5 6之間的溝寬 度減少，隨此，從動滑輪5 9的固定側滑輪半體6 0以及 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -----.1 I------ t ----.1---^«1 —---I I (請先閱讀背面之注意事項再坟寫本頁) 經濟部智慧財產局員工消費合作社印製 -10- 4495 63 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（8 ) 可動側滑輪半體6 1之間的溝寬度增加，所以變速比從低 速檔朝高速檔以無段方式進行改變。 由第3圖和第4圖可看出，散熱水箱4 9的前下部與 調溫器外罩5 2 1係利用冷卻水配管7 2連接在一起，汽 缸頭3 4與散熱水箱4 9的後上部係利用冷卻水配管7 3 連接在一起。 在於引擎E的暖機運轉結束後的狀態下，從受到凸輪 軸桿4 4所驅動的冷卻水泵浦5 3排出來的冷卻水係經過 調溫器外殼5 2以及冷卻水配管7 2而被供應到第1引擎 區塊3 2以及汽缸頭3 4內的冷卻水套，在通過冷卻水套 的期間，冷卻了引擎E之後，又經由冷卻水配管7 3供應 到散熱水箱4 9。然後在通過散熱水箱4 9的期間，溫度 降低後的冷卻水又經由冷卻水配管7 1以及調溫器5 1被 送回到前述冷卻水泵浦5 3 。另一方面，當引擎E正在暖 機運轉中而冷卻水溫度尙低時，調溫器5 1將會作動，冷 卻水將不會通過散熱水箱4 9 ，在於引擎E的內部進行循 環而讓水溫迅速上升。 ^ 是以，散熱水箱4 9 '冷卻風扇5 0、調溫器5 1 、 冷卻水泵浦5 3、冷卻水配管7 1 、7 2 、7 3等的引擎 冷卻用的輔助機件係集中地配置在引擎E的右側面，所以 在進行組裝時或維修時1不必大大地改變引擎E的姿勢即 可從單一方向將前述的輔助機件有效率地裝脫，而且可將 冷卻水配管7 1 、7 2、7 3的長度抑制到最小限度。 特別是，皮帶式無段變速機丁可相對於引擎E進行分 本紙張尺度適用中國國家標準（CNS)A4規格（210 * 297公釐） -- ---I--* - il· — —— 訂 — {請先閲讀背面之注意ί項再却¾本頁) -11 - 4495 63 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（9 ) 離，所以不僅可讓引擎E的搬運、變更姿勢等的工作更爲 容易，可以保持著將引擎E之供結合皮帶式無段變速機τ 的分割面P 6朝下的姿勢來支承該引擎E，而能夠使得引擎 E的姿勢穩定地維持在容易裝脫前述輔助機件的姿勢。用 來驅動凸輪軸桿4 4以及冷卻水泵浦5 3的正時鏈條4 5 也被配置於引擎E的右側面，所以在組裝冷卻水泵浦5 3 時，亦可同時組裝正時鏈條4 5 ，可進一步提高作業性。 在與將引擎區塊以及變速機外殼製作成不可分離的一體構 造的傳統的結構進行比較之下，不僅因各個零件的小型化 而能夠削減鑄造模的成本，而且變成能夠以種種的形態來 組合數種引擎以及數種變速機，因此可提高泛用性。 此外，沿著曲軸3 1的軸線將引擎區塊分割成第1引 擎區塊3 2和第2引擎區塊3 3的兩個部分’可預先將汽 缸4 1 ，活塞42，連桿43以及曲軸3 1組裝在於第1 引擎區塊3 2這一側，所以引擎E的組裝更趨於容易。 從第3圖以及第5圖〜第7圖可看出’第1引擎區塊 3 2和第2引擎區塊3 3以及第1變速機外殼3 7係利用 從第1變速機外殼3 7側旋入的四支螺栓7 4、7 4、 7 5 ' 7 5而結合成一體。用來將第1變速機外殼3 7結 合到第1引擎區塊3 2的位於前側的兩支螺栓7 4、7 4 的頭部係露出在皮帶式無段變速機T的外部’用來將第1 變速機外殼3 7結合到第2引擎區塊3 3的位於後側的兩 支螺栓7 5 、7 5的頭部係受到第2變速機外殻3 8所覆 蓋而無法從外部目視到皮帶式無段變速機τ ° 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -----------I i I I--^- — 1— 訂 (請先閱讀背面之注意事項再赶寫本頁) -12- 449563 A7 B7 經濟部智慧財產局具工消費合作社印製 五、發明說明（1〇 ) 在第1引擎區塊3 2、第2引擎區塊3 3的左側面係 形成有一個以曲軸3 1爲中心的圓形的開口 7 6 (請參考 第5圖），而在第1變速機外殼37也形成有一個以曲軸 3 1爲中心的圓形的開口 7 7 (請參考第6圖及第7圖） 。當進行結合第1引擎區塊32、第2引擎區塊33以及 第1變速機外殼37時，形成在第1、第2引擎區塊32 、3 3的開口 7 6的周緣的環狀的座部7 8 ，與形成在第 1變速機外殼3 7的開口 7 7的周緣的環狀的座部7 9將 會隔介著環狀的密封構件8 0 (請參考第3圖）而抵接在 一起。第1變速機外殼3 7的開口 7 7的直徑稍微大於皮 帶式無段變速機T的驅動滑輪5 4的最大外徑，因此，驅 動滑輪5 4係可通過第1變速機外殼3 7的開口 7 7。 在於第1引擎區塊3 2以及第1變速機外殻3 7係各 突設有兩個供前側的兩支螺栓7 4 ' 7 4貫穿的穀部8 1 、8 1 ; 82、82 ’並且在於第2引擎區塊33以及第 1變速機外殼3 7係各突設有兩個供後側的兩支螺栓7 5 、75貫穿的穀部8 3，83 : 84、84。 因此’當利用四支螺栓74、74 : 75、75將第 1 、第2引擎區塊32、33結合到第1變速機外殻37 的時候’第1、第2引擎區塊3 2 ' 3 3的四個轂部8 1 、8 1 ; 8 3、8 3分別抵接到第1變速機外殼3 7的四 個轂部82、82 : 84、84。又，第5圖和第6圖中 ’第1 、第2引擎區塊32、33與第1變速機外殼37 互相抵接在一起的部分係以網目來表示。 表紙張尺度適用中翻家標準（CNS)A4規格（210 * 297公釐〉— 1!111!11--1_ *II — l·! t麵！_, <請先閱讀背面之注意事項再填贫本頁) -13- A7 4495 6 ______B7 五、發明說明（11 ) 而在於互相抵接的第1、第2引擎區塊3 2、33的 座部7 8與第1變速機外殼3 7的座部7 9，以及互相抵 接的第1、第2引擎區塊32、33的轂部81、81 ; 83、83與第1變速機外殼37的轂部82、82 ; 8 4、8 4之間，係形成可構成隔熱空氣層的空間S (請 參考第3圖）。藉由以這種方式在於第1 、第2引擎區塊 3 2、3 3與第1變速機外殼3 7之間形成可構成隔熱空 氣層的空間S ，可以防止引擎E的熱傳遞到皮帶式無段變 速機T，所以不必特別地提高皮帶式無段變速機T的冷卻 功能，即可確保較爲怕熱的V型皮帶6 4的耐久性。 又，如第1 1圖所示，當組裝動力單元P的時候，可 預先將皮帶式無段變速機T的驅動滑輪5 4組裝到被當作 一個總成已經組裝好的引擎E的曲軸3 1 ，然後，再利用 四支螺栓74、74 ; 75 、75來將第1 、第2引擎區 塊32、33與第1變速機外殼37結合在一起。此時， 因爲第1變速機外殼3 7的開口 7 7的直徑大於組裝到曲 軸3 1上的驅動滑輪5 4的最大外徑，所以可毫無阻礙地 將第1、第2引擎區塊32、33與第1變速機外殼37 結合在一起，而提高組裝性。 如第2圖和第3圖所示|踩踏式起動桿2 5的軸桿 2 6以及起動軸8 5係以懸臂狀被支承於位在車體外側的 第2變速機外殻3 8，軸桿2 6係從第'2變速機外殼3 8 突出到外部，並且起動軸8 5係以同一軸心面對於曲軸 3 1的軸端。受到彈簧8 6朝恢復原本位置方向彈推之被 本紙張尺度適用中國國家標準（CNS)A4規格（210 * 297公釐） I----- Ί----!_ 裝！l·! — 訂·！!線— y. (請先閱讀背面之注意事項再垓寫本1) 經濟部智慧財產局員工消費合作社印製 -14- 經濟部智慧財羞局員工消費合作社印製 44S5 A7 __ B7 五、發明說明（12 ) 固定在起動軸8 5上的扇型齒輪8 7係嚙合於一體地形成 於起動軸8 5上的小齒輪8 8。起動軸8 5係被支承成能 夠在於軸方向上接近/遠離曲軸3 1 ，當起動軸8 5克服 彈簧8 6的彈推力量而朝曲軸3 1接近時，即可嚙合於該 曲軸3 1的軸端。 而當以腳用力踩踏腳踏桿2 7時，軸桿2 6的旋轉將 會經由扇型齒輪9 7以及小齒輪8 8傳遞到起動軸8 5， 起動軸8 5 —方面進行旋轉一方面朝軸方向移動，而嚙合 於曲軸3 1的軸端。其結果，曲軸3 1將會受到起動軸 8 5的轉動而令引擎E起動。 藉由將軸桿2 6以懸臂狀支承於位在車體外側的第2 變速機外殼3 8 ，可以解決收容在第1、第2變速機外殼 3 7、3 8內的V型皮帶6 4與軸桿2 6發生互相干擾的 問題，因此，可將軸桿2 6的位置充分地往上方移動。從 第2圖可以看出，軸桿2 6的位置係位於較之，皮帶式無 段變速機T的驅動滑輪5 4的中心（曲軸3 1的軸心）與 從動滑輪5 9的中心（輸出軸5 8的軸心）所連結的直線 L :更爲上方，而且是被配置在較之通過驅動滑輪5 4的中 心而與地面平行的直線L 2更爲上方的位置，從側面觀看時 ，雖然是與V型皮帶6 4重疊，但是因爲將軸桿2 6以懸 臂狀支承於第2變速機外殼3 8，因此不會與V型皮帶 64互相干擾（請參考第3圖）。 如第7圖所示，第1、第2變速機外殼37、38的 ii面的一部份係構成朝上方伸出的伸出部9 0，在位於這 本紙張尺度適用中國國家標準（CNS) A4規格（210 X 297公釐> 11:---I I II ---i l·--—訂· f I I I I I 〆 f請先閱讀背面之注$項再填寫本頁) -15- 經濟部智慧財產局員工消費合作社印製 4 4 9 5 ¢: A7 B7 五、發明說明（13 ) 個伸出部9 0的第1變速機外殼3 7的內面係配置有轂部 8 4供插入一個位於上側的螺栓7 5 ，該螺栓7 5可將該 第1變速機外殼3 7結合於第2引擎區塊3 3。當將腳踏 桿2 7往下踩，而扇型齒輪9 7與軸桿2 6 —起朝第7圖 中的順時鐘方向旋轉時，這個扇型齒輪9 7係被收容在前 述伸出部9 0內，能夠防止該扇型齒輪9 7觸及到第1 、 第2變速機外殼3 7、38的上壁。以這種方式利用第1 、第2變速機外殼3 7、3 8的上面的伸出部9 0來收容 前述位於上側的螺栓7 5的轂部8 4以及踩踏式起動桿 25的扇型齒輪97，因此，既可將第1 、第2變速機外 殼3 7、3 8的體積抑制在最小限度，又可將轂部8 4以 及扇型齒輪9 7配置得更爲緊緻。 如第8圖和第9圖所示，左右的連結板9 3 、9 4係 可擺動自如地被樞支在間介著橡膠軸襯9 1 、9 1而支承 在中間框架_1 3的左右一對的螺栓9 2、9 2。在設於車 體左側的連結板9 3的外側面的兩個盒狀的止動橡膠支撐 構件95 、95中，分別裝設著止動橡膠96、96。而 在於中間框架1 3則形成兩個可分別抵接於前述止動橡膠 96 、96的承受面13!、132。左右的連結板93、 9 4係利用連結桿9 7和前述樞軸1 5而呈一體地連結在 —起，從一體地形成有汽缸體3 2 !以及曲軸箱半部3 2 2 的第1引擎區塊3 2的前述曲軸箱半部3 22的上面朝向前 上方突出的右吊架9 8R (請參考第5圖）：以及從第1 變速機外殼3 7的上面朝前上方突出的左吊架9 8 L (請 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） I ---— — —III — — — — — — — — (請先M讀背面之注意事項再矽寫本頁) -16- 4495 6 經濟部智慧財產局員工消费合作杜印製 A7 B7 五、發明說明（14 ) 參考第6圖）係分別間介著橡膠軸襯9 9 ，9 9而被支承 於前述樞軸1 5。 從動力單元P經過吊架9 8 L、9 8 R被輸入到樞軸 1 5的荷重係利用支承樞軸1 5的橡膠軸襯9 9、9 9的 彈性變形而被吸收，並且連結板9 3、9 4係在螺栓9 2 ' 9 2的外周進行擺動，止動橡膠9 6 ' 9 6被按壓到中 間框架1 3的承受面1 3 1、1 3 a藉由彈性變形而吸收掉 前述荷重。此外，前述荷重也會被將螺栓9 2、9 2支承 於中間框架1 3的橡膠軸襯9 1 ' 9 1的彈性變形所吸收 □ 從第5圖可看出，在於與汽缸體3 2 1呈一體的曲軸箱 半部3 2 2上，係一體地形成有一個右吊架9 8 R，所以可 將該右吊架9 8 R朝汽缸體3 2 !的上方伸出，而使其充分 地接近於供結合汽缸頭3 4的分割面P 2。 這是因爲如果假定汽缸體和曲軸箱係分別以不同的構 件來構成，並利用分割面來互相結合的話，基於曲軸箱的 前述分割面的加工上的方便性之考量，將無法使得設在該 曲軸箱上的吊架超過前述分割面而延伸到汽缸體這一側， 因此就無法將吊架朝汽缸體上方伸出以令其接近於汽缸頭 的緣故3 ’ 又，設在第1變速機外殼3 7上的左吊架9 8 L係可 隨意地延伸到車體前方側，所以可相對於前述右吊架 9 8 R形成左右對稱。 以上述的結構係可充分地確保從曲軸31的軸線起至 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） !!!裝！ l·! — 訂·1!!線 (請先《讀背面之汉意事項系矽寫本頁) -17- 4495 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（15) 位於前方的樞軸15爲止的距離d (請參考第5圖）的充 分大小1所以能夠縮短從樞軸1 5至引擎E的前端的汽缸 頭3 4的部分爲止的距離’所以當動力單元P在樞軸1 5 的周圍進行上下擺動時，引擎E的汽缸頭3 4的部分之朝 上下方向的移動範圍也就變小。其結果’可有效地避免引 擎E的前部觸及車體的腳踏板等的其他構件。 又，由第2圖和第1 0圖可看出，被配置成宛如受到 安全帽收容箱1 7以及左右的吊架9 8 L、9 8 R所包圍 的化油器2 4係位在樞軸1 5的正後方。並且藉由將吊架 98 L、9 8R以及樞軸1 5設置成儘量接近汽缸頭3 4 即可使得化油器2 4的位置儘量接近汽缸頭3 4。其結果 是可縮短連接化油器2 4與汽缸頭3 4的吸氣管4 0的長 度，因而降低吸氣阻刀，而對於提高引擎E的輸出力量有 所助益。 以上，雖然詳細說明了本發明的實施例，但是本發明 係只要在不脫離其要旨的範圍內，亦可做各種設計上的變 更。 例如：在於實施例中雖然例示了兩輪式機車V的搖擺 式動力單元P ，但是本發明的搖擺式動力單元p亦可適用 在三輪式機車。又，實施例中，雖然是將第1 、第2引擎 區塊3 2、3 3製作成可與第1變速機外殼3 7分離，但 是亦可將引擎區塊與變速機外殼製作成一體不可分離。又 ’在實施例中，雖然只是將右吊架98R設在第1引擎區 塊3 2 ，但是左右的吊架9 8 L、9 8R的任何一個均可 本紙張尺度適用中國國家標準(CNS)A4規格（210 X 297公爱) ----- „--------裝·！ιίι 訂--------線_ - (請先閲讀背面之注$項再埭寫本頁> -18- 4495 6 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（16 ) 設在第1引擎區塊3 2。 【發明的效果】 根據請求項1所述的發明，引擎區塊係分割成第1引 擎區塊以及第2引擎區塊，在於包含汽缸體和曲軸箱的半 導體基板的第1引擎區塊的前述曲軸箱半部係呈一體地形 成有可藉由樞軸來將引擎樞支於車體框架的吊架，所以不 會造成加工上的障礙，即可將樞軸的位置設在充分地接近 汽缸頭之處。其結果，當引擎在樞軸的外周進行擺動時， 汽缸頭朝上下方向移動的範圍變小，能夠避免與較踏板等 的其他構件發生干擾。 根據請求項2所述的發明，因爲是將化油器配置在被 設置在充分地接近於汽缸頭的樞軸的正後方的位置，所以 可縮短連接著化油器與汽缸頭的吸氣管的長度，進而可提 高引擎輸出力量。。 【圖面之簡單說明】 第1圖係速克達型雨輪式機車的整體側面圖。 第2圖係第1圖的重要部位的擴大圖》 第3圖係沿著第2圖中的3 _ 3線的斷面圖。 第4圖係沿著第3圖中的4 - 4線，由箭頭所示方向 的斷面圖。 第5圖係沿著第3圖中的5 - 5線的斷面圖。 第6圖係係沿著第3圖中的6 - 6線的斷面圖。 本紙張尺度適用中國國家標準(c細規格(则97公楚）_ — —— Ι1Ί — — — — — —— * I I 1 l· II I ^ « — [ — — In I ; {請先Μ讀背面之注意事項再填寫本頁) 4495 A7 B7 五、發明說明（17) 第7圖係係沿著第3圖中的7 - 7線的斷面圖 第8圖係第2圖的重要部位的擴大圖。 第9圖係係沿著第8圖中的9 _ 9線的斷面圖 第1 0圖係動力單元的左側面圖。 第1 1圖係動力單元於組裝時的作用說明圖= 的擎體帶後樞化第 弓 . : : : 元 ...... r L°4 2 要 E F T w Ί 主 - 2 3 3 3 3 明 說 號 圖 機 速 變 χίν 機} 速輪 變動 段驅 架無纟 框式輪軸 汽 經濟部智慧財產局員工消費合作社印製 4 0 8 8 3 4 9 9TX type 1 wheel, the second type figure up to 1 gram of the speed map, the main body on the side of the picture showing the whole body of the car map machine, the 4th along the middle of the system, Figure 3, the 3rd; the big along the line No. 4 in Picture Expansion · 'Part of the picture must be re-cut ^', 7 1 of the 1st line of the graph, the 3rd example of the arrow I is 3, the center line of the real 2 is shown in Figure 4 Applicable to China National Standard (CNS) A4 specifications (210 * 297 mm) -6- 4495 63 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. The invention's description (4) A sectional view showing the direction: Figure 5 It is a sectional view taken along line 5-5 in Fig. 3; Fig. 6 is a sectional view taken along line 6_6 in Fig. 3; and Fig. 7 is taken along line 3 in Fig. 3 A sectional view taken along line 7-7; Fig. 8 is an enlarged view of the important part of Fig. 2: Fig. 9 is a sectional view taken along line 9-9 in Fig. 8; Fig. 10 is a driving force The left side view of the unit; Fig. 11 is an explanatory diagram of the function of the power unit during assembly. As shown in Fig. 1 and Fig. 2, it is provided with: front wheels W ί and receiving the steering handle 1 1 to control its direction Swing type power sheet The body frame f of the Scooter two-wheel locomotive V driven by p is divided into three parts: a front frame 12; a middle frame 13 and a rear frame 14; the front pivot frame 1 2 is made of a cast aluminum alloy which is integrally provided with a head pipe 1 2 i, a down pipe 1 2 2 and a foot pedal support 1 2 3. The power unit P can be moved up and down by a pivot 15 The middle frame 1 3 supported freely swinging is made of an aluminum alloy casting, and is coupled to the rear end of the front frame 12 = the rear frame 14 extending from the upper rear of the power unit P is formed by a ring-shaped pipe The structure, the fuel tank 16 is supported on the rear frame 14. The helmet storage box 17 is supported on the middle frame 17, and it can be opened and closed freely by an outer cover 19 having a seat cushion 18 integrally. Covered with a helmet storage box 17 and a fuel tank 16. The power unit P is composed of a water-cooled single-cylinder 4-stroke engine E with the cylinders facing the front of the vehicle body: and the engine E extending from the left side of the engine E to the rear of the vehicle body The belt-type stepless speed changer T is integrally integrated, and the rear of the belt-type stepless speed changer T is integrated. The upper part is combined with the rear end of the middle frame 1 3 by the rear shock absorber 20. The upper part of the belt-type stepless speed changer T is supported by this paper. It is applicable to China National Standard (CNS) A4 (210 X 297 male). Li) -----— ---- I--install i — ^ — ^ — — — order —I-line — · {Please read the precautions on the back before writing this page) 449563 Ministry of Economic Affairs wisdom Printed by the Consumer Cooperative of the Property Bureau A7 B7 V. Description of the invention (5) Air filter 2 1 and carburetor 2 4 The right side of the belt-type stepless speed changer D supports the exhaust pipe 2 2 and the engine E Underneath it supports a stand that can be raised and lowered. On the left side of the belt-type stepless speed changer T is attached a shaft lever 26 protruding from a stepping start lever 25, and the front end of the shaft lever 26 is provided with a crank-like foot lever 27. As can be seen from FIGS. 3 to 5, the engine E is provided with a first engine block 3 2 and a second engine block 3 3 divided by a dividing plane P i extending along the crankshaft 31 in a plumb line direction. The first engine block 3 2 constitutes the engine block 3 2! And the half of the crankcase 3 22, and the second engine block 3 3 constitutes the other half of the crankcase. The front end system of the first engine block 32 is combined with the cylinder head 34 through a partition plane P 2, and the front end system of the cylinder head 3 4 is combined with the cylinder head cover 35 through a partition plane P 3. The right and left sides of the first and second engine blocks 3 2 and 3 3 are combined with the generator cover 36 by interposing a dividing plane P!. The belt-type stepless speed changer T series includes a first speed changer case 37 on the right side and a second speed changer case 38 on the left side which are joined with a split surface P 5 interposed therebetween. The front right side surface of the first transmission case 37 is connected to the left side surfaces of the first and second engine blocks 3 2 and 3 3 via a partition plane P 6. The rear right side surface of the first transmission case 37 is connected to the reduction case 39 through a partition plane P7. As shown in Fig. 3, the piston 4 2 which is slidably fitted into the cylinder 4 1 built in the first engine block 3 2 is connected to the crankshaft 31 via a connecting rod 4 3. The camshaft lever 44 is rotatably supported by the cylinder head 34, and an unillustrated intake valve and exhaust gas provided in the cylinder head 34 are applicable to the Chinese National Standard (CNS) A4 (210 X 297). Mm) — Ji.il! — · Install * il ·! Order ·! ---- Line ~ J (Please read the precautions on the back before writing this page) -8-4495 63 A7 B7 V. Description of the invention (6) The valve train is opened and closed by being driven by the camshaft lever 44. The timing chain 4 5 accommodated in the chain passage 3 2 3 of the first engine block 3 2 is wound around the driving sprocket 46 attached to the crankshaft 31 and the driven follower attached to the cam shaft 44 Sprocket 47. Therefore, every two revolutions of the crankshaft 31, the camshaft lever 4 is rotated once. The alternator 4 8 provided on the right side of the crankshaft 31 is covered by the aforementioned generator cover 36, and a radiator water tank 4 9 is provided on the right side of the generator cover 36. In order to supply cooling air to the radiator water tank 4 9, a cooling fan 50 installed at the right end of the crankshaft 31 is arranged between the AC generator 48 and the cooling water tank 49. Also, is the thermostat casing 5 2 containing the thermostat 51 inside with a dividing surface interposed therebetween? 8 is combined with the right side of the cylinder head 34, and the cooling water pump 5 3 set at the right end of the camshaft lever 4 4 is housed in the space surrounded by the cylinder head 34 and the thermostat housing 5 2 = lies in The left end of the crankshaft 31 protruding to the inside of the first transmission case 37 and the second transmission case 38 is provided with a drive pulley 54 which is an input rotating member of the belt-type stepless transmission T. The drive pulley 5 4 system includes a fixed-side pulley half 5 5 fixed to the crankshaft 31, and a movable-side pulley half 5 6 and a movable-side pulley half that can be approached and separated from the fixed-side pulley half 5 5. The body 5 6 is pressed by the centrifugal weight 5 7 that moves outward in the radial direction as the number of revolutions of the crankshaft 31 increases, toward the fixed-side pulley half body 5 5. The driven pulley 5 9 provided on the output shaft 5 8 supported between the rear of the first transmission case 3 7 and the reducer case 3 9 is equipped with the following: Chinese paper standard (CNS) A4 Specifications (210 X 297 mm) (Please read the precautions on the back before writing this page) Install ill · — — — Order ---------- Line-Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs and Consumer Cooperatives -9- A7 4495 63 ___B7_______ V. Description of the invention (7) Relatively rotating fixed-side pulley semiconductor substrate 60 supported on output shaft 58; and approaching and separating relative to fixed-side pulley half 60 The movable-side pulley half body 6 1, the movable-side pulley semiconductor substrate 6 1 is forced by the spring 6 2 toward the fixed-side pulley half-body 60, and is located between the fixed-side pulley semiconductor substrate 60 and the output shaft 58. There is a locomotive starting clutch 6 3. An endless V-belt 6 4 is drawn between the driving pulley 54 and the driven pulley 59. Between the rear portion of the first transmission case 37 and the reduction case 3 9, an intermediate shaft 6 5 and an axle 6 6 parallel to the output shaft 5 8 are supported, and these output shafts 5 8 ′ intermediate shafts are supported. A reduction gear set 6 7 is provided between 6 5 and the axle 6 6. A rear wheel Wr is attached to the right end of the axle 66 which penetrates the reducer casing 39 and protrudes to the right. The rotation of the crankshaft 31 of the engine E is transmitted to the input member of the belt-type continuously variable transmission T, that is, the drive pulley 5 4, and the drive pulley 5 4 sequentially passes through the V-belt 6 4, the driven pulley 5 9, The locomotive starting clutch 63 and the reduction gear set 67 are transmitted to the rear wheels Wr. When the engine E is rotating at a low speed, the centrifugal force acting on the centrifugal weights 5 7 of the driving pulley 54 is small. Therefore, under the force of the spring 6 2 of the driven pulley 59, the side pulley half 60 is fixed. And the groove width between the movable side pulley half 61 is reduced, and the gear ratio is maintained at a low speed. From this state, as the number of revolutions of the crankshaft 31 increases, the centrifugal force acting on the centrifugal weights 57 of the driving pulley 5 4 increases, and the fixed-side pulley half 5 5 and the movable-side pulley half of the driving pulley 5 4 are increased. The width of the groove between 5 and 6 is reduced. With this, the fixed side pulley half 60 of the driven pulley 5 9 and the paper size apply the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -----. 1 I ------ t ----. 1 --- ^ «1 ---- II (Please read the notes on the back before writing this page) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs -10- 4495 63 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (8) The width of the groove between the movable side pulley halves 6 1 increased, so the gear ratio changed from low speed to high speed without steps Way to change. As can be seen from Figs. 3 and 4, the front lower part of the radiator water tank 4 9 and the thermostat cover 5 2 1 are connected by a cooling water pipe 7 2, and the cylinder head 3 4 and the rear upper part of the radiator water tank 4 9 They are connected together by a cooling water pipe 7 3. In the state after the warm-up operation of the engine E is completed, the cooling water discharged from the cooling water pump 5 3 driven by the camshaft lever 4 4 is passed through the thermostat housing 5 2 and the cooling water pipe 72. The cooling water jacket supplied to the first engine block 32 and the cylinder head 34 is cooled to the engine E while passing through the cooling water jacket, and then supplied to the radiator water tank 49 through the cooling water pipe 7 3. Then, while passing through the heat-dissipating water tank 49, the temperature-reduced cooling water is returned to the aforementioned cooling water pump 5 3 through the cooling water pipe 7 1 and the thermostat 51. On the other hand, when engine E is warming up and the temperature of the cooling water is low, the thermostat 5 1 will operate, and the cooling water will not pass through the radiator water tank 4 9, which circulates inside the engine E to let the water The temperature rose rapidly. ^ Cooling water tank 4 9 'cooling fan 50 0, thermostat 5 1, cooling water pump 5 3, cooling water piping 7 1, 7 2, 7 3 and other engine cooling auxiliary parts are centralized It is arranged on the right side of the engine E, so during assembly or maintenance1, the aforementioned auxiliary parts can be efficiently attached and detached from a single direction without greatly changing the posture of the engine E, and the cooling water pipe 7 1 The lengths of, 7 2, 7 3 are suppressed to a minimum. In particular, the belt-type stepless speed changer D can be divided relative to the engine E. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 * 297 mm)---- I-*-il · — — — Order — {Please read the note on the back first and then stop this page) -11-4495 63 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. The invention description (9) is off, so not only the engine E It is easier to carry and change the posture, etc. It is possible to support the engine E by maintaining the posture of the engine E combined with the belt-type stepless speed changer τ facing down, and supporting the engine E. Stably maintained in a position where the auxiliary mechanism can be easily attached and detached. The timing chain 4 5 for driving the camshaft lever 4 4 and the cooling water pump 5 3 is also arranged on the right side of the engine E. Therefore, when the cooling water pump 5 3 is assembled, the timing chain 4 can also be assembled at the same time. 5, can further improve workability. Compared with the conventional structure in which the engine block and the transmission case are made into an inseparable integrated structure, not only can the cost of the casting mold be reduced due to the miniaturization of each part, but also it can be combined in various forms. Several engines and several transmissions increase versatility. In addition, the engine block is divided into two parts, the first engine block 32 and the second engine block 33, along the axis of the crankshaft 31. The cylinder 4 1, the piston 42, the connecting rod 43, and the crankshaft can be divided in advance. The assembly of 31 is on the side of the first engine block 3, so the assembly of engine E is easier. From Figure 3 and Figures 5 to 7, it can be seen that 'the first engine block 3 2 and the second engine block 33 and the first transmission case 3 7 are used from the first transmission case 3 7 side The four bolts 7 4, 7 4, 7 5 '7 5 are screwed into one. The heads of the two bolts 7 4 and 7 4 for coupling the first transmission case 3 7 to the first engine block 3 2 are exposed on the outside of the belt-type stepless transmission T. The first transmission case 3 7 is connected to the second engine block 3 3 and the two bolts 7 5 and 7 5 on the rear side are covered by the second transmission case 3 8 and cannot be seen from the outside. Belt-type stepless speed changer τ ° This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) ----------- I i I I-^-— 1— Order (Please read the precautions on the back before writing this page) -12- 449563 A7 B7 Printed by the Industrial Property Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (10) In the first engine block 3 2, 2 The left side of the engine block 3 3 is formed with a circular opening 7 6 centered on the crankshaft 3 1 (refer to FIG. 5), and the first transmission case 37 is also formed with a crankshaft 3 1 as The circular opening 7 7 in the center (please refer to Figures 6 and 7). When combining the first engine block 32, the second engine block 33, and the first transmission case 37, a ring-shaped seat formed on the periphery of the opening 7 6 of the first, second engine blocks 32, 3, and 3 is formed. The portion 7 8 is in abutment with the annular seat portion 7 9 formed at the periphery of the opening 7 7 of the first transmission case 3 7 via the annular sealing member 80 (refer to FIG. 3). Together. The diameter of the opening 7 7 of the first transmission case 37 is slightly larger than the maximum outer diameter of the driving pulley 54 of the belt-type stepless transmission T. Therefore, the driving pulley 5 4 can pass through the opening of the first transmission case 37. 7 7. The first engine block 3 2 and the first transmission housing 3 7 series are each provided with two front bolts 7 4 ′ 7 4 and two trough portions 8 1, 8 1; 82, 82 ′, and In the second engine block 33 and the first transmission case 37, two troughs 8 3, 83: 84, and 84 are formed by protruding two rear bolts 7 5 and 75. Therefore, 'when four bolts 74, 74: 75, 75 are used to couple the first and second engine blocks 32, 33 to the first transmission case 37', the first and second engine blocks 3 2 '3 The four hubs 8 1, 8 1 of 3; 8 3, 8 3 abut the four hubs 82, 82: 84, 84 of the first transmission case 37, respectively. In Figs. 5 and 6, the portions where the first and second engine blocks 32 and 33 and the first transmission case 37 abut each other are shown by a mesh. The paper size of the table applies to the CNS A4 specification (210 * 297 mm> — 1! 111! 11--1_ * II — l ·! T side! _, ≪ Please read the precautions on the back side first Fill in this page) -13- A7 4495 6 ______B7 V. Description of the invention (11) It is the first and second engine blocks 3 and 33, which are in contact with each other, and the seats 7 8 and the first transmission case 3 7 7 and 9 and hubs 81, 81 of the first and second engine blocks 32, 33 abutting each other; 83, 83 and hubs 82, 82 of the first transmission housing 37; 8 4, 8 Between 4, it forms a space S (refer to Figure 3) that can form a heat-insulating air layer. By forming a space S constituting a heat-insulating air layer between the first and second engine blocks 3 2, 3 3 and the first transmission case 37 in this manner, it is possible to prevent the heat of the engine E from being transmitted to the belt Type stepless speed changer T, so it is not necessary to improve the cooling function of the belt type stepless speed changer T in order to ensure the durability of the V-belt 6 4 which is more afraid of heat. In addition, as shown in FIG. 11, when the power unit P is assembled, the drive pulley 5 4 of the belt-type stepless speed changer T can be assembled in advance to the crankshaft 3 of the engine E that has been assembled as an assembly. 1, and then four bolts 74, 74; 75, 75 are used to combine the first and second engine blocks 32, 33 and the first transmission case 37 together. At this time, since the diameter of the opening 7 7 of the first transmission case 37 is larger than the maximum outer diameter of the drive pulley 54 which is assembled to the crankshaft 31, the first and second engine blocks 32 can be unhindered. And 33 are combined with the first transmission case 37 to improve assemblability. As shown in Fig. 2 and Fig. 3 | The shaft 2 6 of the step-on starter lever 2 5 and the starter shaft 8 5 are cantilever-shapedly supported by a second transmission housing 3 8 located outside the vehicle body. The lever 2 6 series protrudes to the outside from the second transmission case 3 8, and the starting shaft 85 is aligned with the shaft end of the crankshaft 31 with the same axial center surface. It is quilted by the spring 8 6 in the direction of returning to the original position. The paper size applies the Chinese National Standard (CNS) A4 (210 * 297 mm) I ----- Ί ----! _ Install! l ·! — Ordered! ! Line — y. (Please read the notes on the back before copying the copy 1) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs -14- 44S5 A7 __ B7 printed by the Employee Cooperative of the Smart Finance Bureau of the Ministry of Economic Affairs (12) The sector gear 8 7 fixed on the starting shaft 85 is meshed with a pinion 8 8 integrally formed on the starting shaft 85. The starting shaft 8 5 is supported to be able to approach / distance from the crankshaft 3 1 in the axial direction. When the starting shaft 8 5 approaches the crank shaft 3 1 against the spring force of the spring 86, it can be engaged with the crank shaft 3 1. Shaft end. When the foot lever 27 is stepped on with a strong foot, the rotation of the shaft 26 will be transmitted to the starting shaft 8 5 through the sector gear 9 7 and the pinion gear 8 8. It moves in the axial direction and meshes with the shaft end of the crankshaft 31. As a result, the crankshaft 31 is rotated by the starting shaft 85 and the engine E is started. By supporting the shaft 2 6 in a cantilever manner on the second transmission case 3 8 located outside the vehicle body, the V-belt 6 4 accommodated in the first and second transmission cases 3 7 and 3 8 can be solved. Since the problem of mutual interference with the shaft 26 is caused, the position of the shaft 26 can be sufficiently moved upward. It can be seen from the second figure that the position of the shaft 26 is relatively compared to the center of the driving pulley 5 4 (the axis of the crankshaft 31) and the center of the driven pulley 59 (the output of the belt-type continuously variable transmission T). The straight line L connected by the axis of the shaft 5 8) is further above, and is disposed above the straight line L 2 that is parallel to the ground by driving the center of the pulley 5 4. When viewed from the side, Although it overlaps the V-belt 64, the shaft 26 is supported by the second transmission case 38 in a cantilever shape, so it does not interfere with the V-belt 64 (refer to FIG. 3). As shown in FIG. 7, a part of the ii surface of the first and second transmission casings 37 and 38 constitutes a protruding portion 90 extending upward, and the Chinese national standard (CNS) ) A4 specification (210 X 297 mm > 11: --- II II --- il · ---- order · f IIIII 〆f Please read the note on the back before filling this page) -15- Ministry of Economy Printed by the Intellectual Property Bureau's Consumer Cooperatives 4 4 9 5 ¢: A7 B7 V. Description of the Invention (13) The first transmission housing 3 with a protruding portion 9 0 is provided with a hub portion 8 4 for inserting one The bolt 7 5 located on the upper side can connect the first transmission case 37 to the second engine block 33. When the foot lever 27 is depressed, and the sector gear 9 7 and the shaft lever 2 6 are rotated in the clockwise direction in FIG. 7, the sector gear 9 7 is housed in the above-mentioned protrusion. Within 90, the sector gear 97 can be prevented from touching the upper walls of the first and second transmission cases 37, 38. In this way, the protrusions 90 on the upper surfaces of the first and second transmission cases 37, 38 are used to accommodate the hub portion 84 of the bolt 7 5 and the fan gear of the step-on start lever 25. Therefore, the volume of the first and second transmission housings 37, 38 can be minimized, and the hub portion 84 and the sector gear 97 can be arranged more compactly. As shown in FIG. 8 and FIG. 9, the left and right connecting plates 9 3 and 9 4 are pivotably supported pivotably between rubber frames 9 1 and 9 1 and supported on the left and right sides of the middle frame_1 3. A pair of bolts 9 2, 9 2. The two box-shaped stopper rubber support members 95 and 95 provided on the outer side of the link plate 93 on the left side of the vehicle body are provided with stopper rubbers 96 and 96, respectively. However, the middle frame 1 3 forms two receiving surfaces 13! And 132 which can abut the stop rubbers 96 and 96, respectively. The left and right connecting plates 93 and 9 are integrally connected together by the connecting rod 97 and the pivot 15, and the cylinder block 3 2 and the first half of the crank case 3 2 2 are integrally formed. Right hanger 9 8R (refer to FIG. 5) protruding above the crankcase half 3 22 of the engine block 3 2 from above, and left protruding from the top of the first transmission case 3 7 forward and above Hanger 9 8 L (Please use Chinese paper standard (CNS) A4 (210 X 297 mm) for this paper size) I --------III--------(Please read the note on the back first Matters will be written on this page) -16- 4495 6 Duty printing of A7 B7 by the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Printing of the invention (14) (refer to Figure 6) The rubber bushings are interposed respectively 9 9, 9 9 Instead, it is supported by the aforementioned pivot shaft 15. The load input from the power unit P via the hangers 9 8 L, 9 8 R to the pivot 15 is absorbed by the elastic deformation of the rubber bushes 9 9 and 9 9 supporting the pivot 15 and the link plate 9 is absorbed. 3, 9 and 4 are swinging on the outer periphery of the bolt 9 2 '9 2 and the stopper rubber 9 6' 9 6 is pressed against the receiving surface of the intermediate frame 1 3 1 3 1, 1 3 a through the elastic deformation to absorb the aforementioned Load. In addition, the aforementioned load will also be absorbed by the elastic deformation of the rubber bush 9 1 '9 1 which supports the bolts 9 2 and 9 2 to the intermediate frame 1 3. As can be seen from Fig. 5, it lies with the cylinder block 3 2 1 On the integrated crankcase half 3 2 2, a right hanger 9 8 R is integrally formed, so the right hanger 9 8 R can be extended toward the upper side of the cylinder block 3 2! The ground is close to the dividing plane P 2 for the combined cylinder head 34. This is because if it is assumed that the cylinder block and the crankcase are respectively composed of different components and are combined with each other by using split surfaces, the consideration of the convenience of processing of the aforementioned split surfaces of the crankcase will not make the The hanger on the crankcase extends to the side of the cylinder block beyond the aforementioned dividing surface, so it is impossible to extend the hanger toward the cylinder block to make it close to the cylinder head. 3 'Also, it is installed in the first transmission The left hanger 9 8 L system on the housing 37 can be extended to the front side of the vehicle body at will, so it can form a left-right symmetry with respect to the aforementioned right hanger 9 8 R. With the above structure, it can fully ensure that from the axis of the crankshaft 31 to this paper size, the Chinese National Standard (CNS) A4 specification (210 X 297 mm) is applied !!! l ·! — Order · 1 !! Line (please read "Chinese-Issue Matters on the Reverse Side" to write this page) -17- 4495 Printed by A7 B7, Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economy The distance d (refer to Figure 5) from the forward pivot 15 is a sufficient size 1 so that the distance from the pivot 15 to the part of the cylinder head 3 4 at the front end of the engine E can be shortened. So when the power unit P is at When the pivot shaft 15 is swung up and down, the range in which the cylinder head 34 of the engine E moves up and down becomes smaller. As a result, it is possible to effectively prevent the front of the engine E from touching other components such as the pedals of the vehicle body. As can be seen from Figs. 2 and 10, the carburetor 24, which is arranged to be surrounded by the helmet storage box 17 and the left and right hangers 9 8 L, 9 8 R, is located at the pivot. Right behind the shaft 15. And by setting the hangers 98 L, 98 R, and the pivot 15 as close to the cylinder head 3 4 as possible, the position of the carburetor 24 can be as close as possible to the cylinder head 3 4. As a result, the length of the suction pipe 40 connecting the carburetor 24 and the cylinder head 34 can be shortened, thereby reducing the suction resistance knife, which is helpful for increasing the output power of the engine E. Although the embodiments of the present invention have been described in detail above, the present invention can be modified in various designs as long as it does not deviate from the gist thereof. For example, although the swaying power unit P of the two-wheeled locomotive V is exemplified in the embodiment, the swaying power unit p of the present invention can also be applied to a three-wheeled locomotive. In the embodiment, although the first and second engine blocks 3 2, 3 and 3 are made to be separable from the first transmission case 37, the engine block and the transmission case may be integrally formed. Separation. Also, in the embodiment, although the right hanger 98R is only provided in the first engine block 3 2, any one of the left and right hangers 9 8 L, 9 8R can be used in accordance with the Chinese National Standard (CNS) for this paper size. A4 specifications (210 X 297 public love) ----- „-------- installed!! Ί order -------- line _-(Please read the note $ on the back before 埭Write this page> -18- 4495 6 A7 B7 printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. The description of the invention (16) is located in the first engine block 3 2. [Effects of the invention] According to claim 1 According to the invention, the engine block is divided into a first engine block and a second engine block, and the crankcase half of the first engine block including the semiconductor substrate of the cylinder block and the crankcase is integrally formed with a The pivot is used to pivot the engine to the suspension of the car body frame, so that it will not cause processing obstacles, and the position of the pivot can be set sufficiently close to the cylinder head. As a result, when the engine is at the pivot When the outer periphery of the shaft is swung, the range in which the cylinder head moves up and down is reduced, which can avoid interference with other components such as pedals. According to the invention described in claim 2, since the carburetor is disposed at a position sufficiently close to the rear of the pivot of the cylinder head, the intake air connecting the carburetor and the cylinder head can be shortened. The length of the tube can further improve the engine output power. [Simplified description of the drawing] Fig. 1 is an overall side view of a speed keda rain wheel locomotive. Fig. 2 is an enlarged view of an important part of Fig. 1 " Fig. 3 is a sectional view taken along line 3_3 in Fig. 2. Fig. 4 is a sectional view taken along line 4-4 in Fig. 3 and indicated by an arrow. Fig. 5 A cross-sectional view taken along line 5-5 in Fig. 3. Fig. 6 is a cross-sectional view taken along line 6-6 in Fig. 3. The paper dimensions are applicable to Chinese national standards (c fine specifications (then 97 公 楚) _ — —— Ι1Ί — — — — — —— * II 1 l · II I ^ «— [— — In I; {Please read the notes on the back before filling this page) 4495 A7 B7 5 Explanation of the invention (17) Fig. 7 is a cross-sectional view taken along line 7-7 in Fig. 3. Fig. 8 is an enlarged view of important parts in Fig. 2. Fig. 9 is taken along Fig. 8. middle Sectional view of line 9 _ 9 Figure 10 is the left side view of the power unit. Figure 11 shows the function of the power unit during assembly. = The rear bow of the engine block is pivoted.::: Yuan. ..... r L ° 4 2 To EFT w Ί Main-2 3 3 3 3 Explanation of the illustration map machine rapid change χίν machine} Speed wheel change section drive frame frameless wheel type axle Axle of the Ministry of Economic Affairs Intellectual Property Bureau employee consumer cooperative Printing 4 0 8 8 3 4 9 9
軸 2 曲 2 缸氣右左 :第汽吸：： 2 ...... R L "半 區 I區 擎體箱擎 架架 器弓 缸由弓 頭 管吊吊 由1纟 >··ί 塊 區 擎 -ΙΪ. ^ ί---裝-----^----訂·--------線 (諝先閱讀背面之注意事項再梦寫本頁) 部 架架 吊吊 塊 區 擎 弓 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公茇） -20 -Shaft 2 Curve 2 Cylinder Gas Right Left: No. Suction :: 2 ...... RL " Half Zone I Zone Engine Box Engine Stand Bow Bow Cylinder Hanged by Bow Head Tube by 1 纟 > · ί Block engine-ΙΪ. ^ Ί --- install ----- ^ ---- order · -------- line (谞 read the precautions on the back before dreaming about writing this page) The paper size of the hanging bow is suitable for the Chinese National Standard (CNS) A4 (210 X 297 cm) -20-