1237610 (1) 玖、發明說明 【發明所屬之技術領域】 本發明是關於具有以電池來驅動的馬達以及引擎的混 合型車輛。 【先前技術】 以往所知的具備內燃機也就是引擎以及馬達的二輪 車、三輪車、四輪車等等的混合型車輛，爲了要充分確保 充分的可應用空間，有的是將引擎的汽缸配置成近乎水平 方向。這種混合型車輛，是將對馬達供電用的電池配置在 可應用空間內，或者位在可應用空間的兩外側的外側面板 的內部’或者配置在較之引擎更爲前側。（例如：請參考 專利文獻1 )。 專利文獻1所揭示的混合型車輛，是將電池搭載於較 之引擎更爲前側，且位在置腳板的下側，並且具備用來冷 卻電池的空氣通路、冷卻水通路。電池與引擎在空氣通路 內或者冷卻水通路內被配置成並聯或串聯。此外，電池的 結構則是：串聯或並聯複數個內包有數個電池個體的電池 包。而且，由引擎以及馬達所組成的動力單元是藉由連桿 機構而可朝上下方向自由擺動地連結於車體骨架上。 [專利文獻1 ] 此處的專利文獻I是指：日本特開平1 0 - 2 9 7 5 7 0號公 報（段落編號0 02 3 ; 005 7至0 0 6 1 ;第]圖；第3圖；第 1237610 (2) Η圖；第1 2圖）。 〔本發明所欲解決的課題〕 · 然而，這種混合型車輛，重量物也就是引擎的位置是 “ 配置於較之電池的搭載位置更爲後側，所以車體的重心位 置偏置於後側。此外，坐墊也設置在車體的靠後側位置， 因此’當騎乘者跨坐於坐墊時，重心會愈加地往後側移 動。基於提高車輛的轉向操控性的觀點而言，是將車體的 φ 重心設在前後方向的中心附近，當騎乘者跨騎於坐墊時， 可使得荷重往前後分散爲佳。又，如果引擎位於後側的 話’將會有所謂：「可應用空間將會減少相當於該引擎的 份量」的問題。 本發明是爲了解決前述的課題而開發完成的，其目的 是在於提供：可容易分散荷重以提高車輛的轉向操控性、 便利性之混合型車輛。 【發明內容】 [用以解決課題之手段] 爲了達成上述目的，本案的第一發明的混合型車輛， 是將引擎（例如：實施形態中的引擎2 )或馬達（例如： 實施形態中的馬達3 )的至少其中一方的輸出動力傳達到 驅動輪（例如：實施形態中的後輪1 5 R )，並且將置腳用 的置腳板設置於較之坐墊（例如：實施形態中的坐墊 1 2 0 )更位於車體前下方的混合型車輛（例如··實施形態中 · -6 - 1237610 (3) 的混合型車輛])’其特徵爲：將對於前述馬達供電的電 池（例如··實施形態中的電池單元8 )配置於前述置腳板 的下面，並且將前述引擎配置成：至少有一部分在車體的 前後方向上是位於與前述電池重疊的位置。 本發明的這種混合型車輛，是將重量物也就是電池和 引擎配置成：在車體的前後方向上，至少有一部分是重疊 的，所以可使引擎的位置移動到車體的前側。此外，將電 池的位置設在置腳板的下面，所以車輛的重心得以較之將 電池配置在可應用空間的附近的情況來得更低。以這種方 式來配置電池和引擎的話，車體的重心位置將會靠近前後 方向的中心而且是位於較低位置，因此，可提高車體的重 量平衡。當騎乘者跨騎在這種混合型車輛的坐墊時，騎乘 者和引擎以及電池的荷重將會被分散到車體的前後方向。 也就是說，在騎乘者尙未跨騎的狀態下，荷重是集中在車 體的前側，但是，當騎乘者跨騎的狀態下，騎乘者的體重 將會加諸到車體的後側，所以其結果，可使得車體的前後 的荷重平衡趨於良好。此外，本發明的混合型車輛是將電 池和引擎配置成：在於前後方向上互相重疊一部分，因 此，可縮短車體的前後方向的長度’而謀求車體的緊緻 化。 本案的第二發明的混合型車輛，是就第一發明的混合 型車輛，其中，前述電池是配置成：在車體寬度方向上至 少分開成兩個部分，前述引擎是配置在呈分開配置的前述 電池之間。 1237610 (4) 此一發明的混合型車輛，是將電池在車體寬度方向上 分開地配置。將重量物也就是電池予以左右分開地配置， 可藉由將電池的重心的位置設在車體的寬度方向的中心線 的附近’而提高車體的左右方向的重心平衡。 本案的第三發明的混合型車輛，是就第二發明的混合 型車輛’其中，前述電池從平面圖觀察時，是配置成：朝 向車體寬度方向的中心線（例如：實施形態的中心線 L w )傾斜的八字狀。 此一發明的混合型車輛，是將電池配置成：朝向車體 寬度方向的中心線傾斜，也就是從平面圖觀察時是呈八字 狀’所以在其所形成的區域內，配置一個例如：具有窄幅 形狀的引擎的汽缸頭等，可以節約引擎和電池的配置空 間。 本案的第四發明的混合型車輛，是將引擎或馬達的至 少其中一方的輸出動力傳達到驅動輪，並且將置腳用的置 腳板設置於較之坐墊更位於車體前下方的混合型車輛，其 特徵爲：將對於前述馬達供電的電池和引擎配置成：在車 體的前後方向上較之前述坐墊更前側的位置。 此一發明的混合型車輛，是爲了要使得騎乘者跨騎在 坐墊時的荷重不要集中到車體的後側，而將電池和引擎配 置於較之坐墊更前側，而可很容易將荷重分散到車輛的前 側和後側。此外，將引擎的位置設在前側’並且將引擎的 位置放低。利用這樣的引擎的位置以及配置在置腳板下面 的電池的位置，可使得車輛的重心更低。 -8- 1237610 (5) 本案的第五發明的混合型車輛，是將引擎或馬達的至 少其中一方的輸出動力傳達到驅動輪，並且將置腳用的置 腳板設置於較之坐墊更位於車體前下方的混合型車輛，其 特徵爲：將對於前述馬達供電的電池和引擎配置成：位在 較之車體的前後方向上的中心線更前側的位置。 此一發明的混合型車輛，是將重量物也就是電池以及 引擎配置於較之車體的前後方向上的中心線更前側的位 置，因此與傳統的將引擎、電池位在車體後側的情況相較 之下，可將車體的重心位置設定在前側。 本案的第六發明的混合型車輛，是就第五發明的混合 型車輛，其中，將前述坐墊配置於較之前述中心線更爲後 側。 此一發明的混合型車輛，是將坐墊配置在較中心線更 爲後側處，騎乘者的重量主要是由後側來承受。此處，是 如前所述般地，因爲車體的重心位置是設定在前側。因 此，可將荷重分散到車體的前側和後側。此外，將引擎以 及電池配置在前側的時候，如果將這些重量物的安裝位置 放低的話，可使得車輛的重心位置更低。 【實施方式】 [發明之實施形態] 茲佐以圖面，說明本發明的實施形態如下。 如第1圖的側面圖和第2圖的平面圖所示，本實施形 態的混合型車輛1是具備：內燃機也就是引擎2 ;以及具 -9- 1237610 (6) 有發動機或者充電機的功能的馬達3之速克達型的兩輪機 車。這種混合型車輛1的車體骨架n是具有：以中間骨 架1 3將前部骨架1 2與後部骨架1 4予以連結的結構。 又，引擎2和馬達3是與容後詳述的無段變速機4等等一 起構成動力單元7，這個動力單元7是固定在中間骨架 1 3。由可對馬達3供電並且可利用馬達所產生的電力來進 行充電的電池8 a所組成的電池單元8是在於與車體寬度 垂直相交的方向也就是車體的前後方向上，有一部分與動 力單元 7重疊地固定在中間骨架1 3。此外，本實施形態 的電池單元8是相當於申請專利範圍中所稱的電池。 在前部骨架1 2上，是插通著一個用來連結前輪1 5 F 與轉向用車把16的前叉17，並且裝設有一個前罩18。 後部骨架1 4是由：具有彎折成略呈U字形狀的管材 1 4 a和橫向構件1 4b所構成的，後罩1 9是裝設於後部骨 架14上面。後罩19的上部是安裝著坐墊20，後部是安 裝著尾燈21以及牌照安裝部22。此外，坐墊20是安裝 在較之車體的前後方向的中心線L m更後側的位置上。 中間骨架1 3是從與前部骨架1 2相連結的部分往下 降，在混合型車輛I的底部附近’如第2圖所示般地分歧 成兩股，並且利用其後側與後部骨架1 4相連結。電池單 元8以及動力單元7是被固定在中間骨架1 3呈分歧的兩 個管材1 3 a、1 3 b上。此外，如第】圖所示，在中間骨架 1 3的前側，是安裝著：用來冷卻動力單元7的散熱水箱 9 ;以及與該散熱水箱9形成一體的感溫式電動水泵浦 ~ 10- (7) 1237610 (以下簡稱爲水泵浦）。 並且在中間骨架13上，是安裝著一個中間罩23，用 來包覆：散熱水箱9、水泵浦、電池單元8以及動力單元 7。中間罩23的車寬方向上的中央部份是沿著車輛的前後 方向朝上方突出，並且在其兩側形成供騎乘者擱置雙腳的 置腳板2 4。此外，如第2圖所示，中間罩2 3的形狀，從 平面圖觀察時，其寬度是朝車體前側逐漸的變窄。 此處，將佐以第3圖來說明將動力單元7以及電池單 元8固定到中間骨架1 3的一種例子。 第3圖是沿者第〗圖的A _ a剖面線的剖面圖，圖中 的中間卓2 3是由：上部2 3 a和底部2 3 b所構成的，將電 池單元8配置在由上部23a和底部23b所形成的空間內。 動力單兀7是利用托架9〗、9〗分別固定在中間骨架〗3的 各個管材13a、i 3b上。電池單元8是被支承固定在具有 與管材13a、13b的形狀相對應的彎曲部92 a、92b的支承 板9 2上。此外’相當於電池單元8的上側之中間罩2 3將 成爲置腳板24。 第1圖和第2圖所示的電池單元8是將呈圓柱形狀的 電池8 a使其長軸保持一致地平行的束集在一起，利用接 者劑等將電池8 a彼此固定在一起，並且以未圖示的導電 板將各個電池8a予以串聯在一起。此外，電池單元8的 構造也可以採用：利用塑膠構件等將數個呈圓筒形狀的電 池8 a予以束集在一起的熱收縮膜電池包的構造。電池單 兀8具有細長的形狀，其短邊與電池8 a的長軸的長度大 -11 - (8) 1237610 致上相等，長邊以及高度則依據所束集的電池8 a的個數 而定。 在本實施形態中，電池單元8是如第2圖的平面圖所 示般地，以混合型車輛 1的寬度方向的中心線 Lw爲中 心，略呈左右對稱地左右各搭載一個。各電池單元8是朝 向混合型車輛1的前方傾斜成八字形，也就是說’是以各 電池單元8的靠近前輪1 5 F側的一端部8 1互相接近的方 式，具有一個傾斜角。藉由這種方式的傾斜配置，各電池 單元8的靠近後輪1 5 R側的另一端部8 2彼此之間的距離 將會變大，由這兩個另一端部8 2所形成的空間將成爲用 來配置引擎2的配置空間。例如：將引擎2的汽缸頭3 0 配置在這個配置空間。因此，第2圖的平面圖中’呈傾斜 配置的兩個電池單元8是從左右兩側包夾住引擎2的配置 方式，由第1圖所示的側面圖可以看出，在混合型車輛1 的前後方向上，電池單元8與動力單元7是配置成：有一 部分重疊在一起。 第1圖所示的散熱水箱9是位於前土除的後側’利用 未圖示的冷卻水路，令冷卻水循環來冷卻動力單元7的引 擎2。散熱水箱9是呈一體地具備水泵浦’其冷卻面是被 配置成相對於：行車時迎面而來的風略成垂直°以這種方 式將散熱水箱9與水泵浦呈一體地形成，可以削減，零件數 目，而且又可提高安裝性。此外，用來冷卻散熱水箱9的 行車時迎面而來的風將會流經過第3圖所示的中間罩23 內的電池單元8的外表面，因此，電池單元8也被這個行 -12 - 1237610 Ο) 車時迎面而來的風所冷卻。本實施形態的電池單元8是分 割成左右兩個來配置，所以與行車時迎面而來的風的接觸 面積很大，冷卻效率很高。 如第4圖所示，動力單元7具有短汽缸的引擎2，在 曲軸6的一端具備有一馬達3。此外，曲軸6是利用齒輪 3 8與離心式離合器4 1相連結，配置於與離心式離合器4 j 同一軸心上的錐型的無段變速機4是經由減速齒輪組5而 連結到用來使第1圖所示的驅動輪（後輪）1 5 R旋轉的動 力傳達機構6 1。 引擎2是具備：具有可令藉由連桿2 5連結到曲軸6 的活塞26滑動的汽缸27的汽缸體28;和裝設了火星塞 2 9、吸氣閥和排氣閥（未圖示）的汽缸頭3 〇。此外，在 汽缸頭3 0又具備了：可變點火正時方式的氣閥頂升機構 3 1。用來驅動氣閥的開閉之凸輪軸3 2的旋轉是受到繞掛 在曲軸6的驅動用鏈輪6 a與凸輪軸3 2的從動用鏈輪3 2 a 之間的點火正時鏈條3 3所控制的。此外，動力單元7爲 了要加大第1圖所示的可應用空間3 4，乃將引擎2的汽 缸2 7略呈水平地配置。 馬達3是使用：在定子3 5的外周，配設了可與曲軸 6 —起旋轉的轉子3 6的外轉子型的馬達。這個馬達3是 兼具有：當引擎2啓動時或受到要求高輸出動力時，可作 爲利用電池單元8 (參考第1圖）所供給的電力來使曲軸 6旋轉的發動機的功能；以及可將曲軸6的旋轉變換成電 有匕以kl[電池單兀8進行充電的發電機的功能。此外，以這 -13- 1237610 (10) 種方式將動能變換成電能後，對於電池單元8充電的過程 被稱爲「回充電」。至於「回充電」時的動作，容後詳 述。 又，在曲軸6上的馬達3與連桿2 5之間，配設有離 合器3 7和齒輪3 8。離合器3 7具有讓引擎2和馬達3相 連結和分開的功能’例如：是以濕式離合器來構成的。而 且藉由經過這個離合器3 7而能夠使得減速時的引擎煞車 (泵抽損失、機械損失）所產生的能量全部都予以重生。. 藉由以這種方式來回收引擎煞車時的能量，可進一步提高 能量回收的效率。齒輪3 8是嚙合於離心式離合器4 1。離 心式離合器4 1是被配置在與無段變速機4的輸入軸42同 一軸上，隨著旋轉速度的加快，離合器內圈將會連結到可 與輸入軸42 —體旋轉的離合器外圈之單向離合器。 無段變速機4是具有：利用支承軸4 7來樞支著分別 抵接於輸入軸4 2側的被驅動面4 3和輸出軸4 4側的被驅 動面4 5的圓錐體4 6之構造。支承軸4 7是架設在輸出軸 的圓錐母線上，因應著輸入軸42的迴轉數，離心機構48 將會使樞支該支承軸4 7的夾具4 9滑動，藉此而改變被驅 動面4 3、4 5與圓錐體4 6的接觸位置，進而改變該無段變 速機4的變速比。 在無段變速機4的後段，具有減速齒輪組5。減速齒 輪組5是由：無段變速機4的輸出軸44的齒輪5 1、和齒 輪5 2、和齒輪5 3、和齒輪5 4所組成的，讓各齒輪5 1、 5 2、5 3、5 4相嚙合來將動力予以減速。 -14 - (11) 1237610 動力傳達機構6 1是具有：利用繞掛在驅動輪搖臂6 2 內的驅動鏈輪6 3與第1圖所示的車軸64的從動鏈輪6 5 之間的驅動用鏈條6 6，將動力單元7所產生的旋轉予以 傳遞到後輪1 5 R的功能。 驅動輪搖臂6 2是利用：包覆著驅動用鏈條6 6的主臂 62a以及隔著後輪15R而相對向的補助臂62b來樞支著車 軸64，主臂62a和輔助臂62b是分別利用軸承而被安裝 成可相對於動力單元7進行擺動。此外，在動力單元7這 一側，利用橫向構件6 2 c將主臂6 2 a和輔助臂6 2 b連結在 一起，以防止驅動輪搖臂6 2扭轉變形。此外，車軸6 4是 連結著後輪1 5 R的輪圈6 7。 又，後輪1 5 R的避震器7 0是如第1圖所示地，從側 面圖觀察時，是位在用來收容安全帽等的可應用空間34 的下面側，架設在後部骨架！ 4與驅動輪搖臂6 2之間。在 本實施形態中，是將動力單元7配設在前側，所以車體的 後側空間較有余裕，因此得以讓可應用空間擴大了相當於 該余裕量的空間。 接下來，說明前述電池單元8以及引擎2的配置方式 所產生的作用。 這種混合型車輛1是將電池單元8相對於車寬方向的 中心線Lw配置在略爲左右對稱的位置上，將電池單元8 的重心位置設定成位在中心線Lw的附近，所以可提高左 右方向的平衡。又，將動力單元7配置成彷彿受到電池單 元8所包夾的狀態，而可使得引擎2位在較爲前方的位 -15 - 1237610 (12) 置。因爲是將重量較大的電池單元8以及動力單元7集中 配置於混合型車輛1的前後方向的中央附近，所以可提高 前後方向的重量平衡。因此，例如：即使當驅動輪搖臂 6 2擺動的時候，混合型車輛1亦可保持良好的轉向操控 性。尤其是將電池單元8和引擎2 (汽缸頭3 0以及汽缸 體2 8 )配置在較之中心線L m更爲前側’所以當騎乘者跨 騎在坐墊2 0時，電池單元8和引擎2以及騎乘者的重量 將會分散到車體的前後，所以可保持良好的轉向操控性。 此外，將坐墊 2 0設置在較之中心線 Lm更爲後側的做 法，也有助於將加諸到車體上的荷重往前後分散。 又，藉由將電池單元8配設在置腳板24的下面，可 使車體的高度方向的中心位置變低。再者，被配置於較之 坐墊2 0更爲前側的引擎2是處於受到電池單元8所包夾 的低處，所以可使得車體的重心位置變得更低。 因爲是將電池單元8呈傾斜地配置，所以可將電池單 元8的其中一端部8 1側的車寬方向上的寬度，較之另一 端部8 2側的車寬方向上的寬度更爲減少，因此可將車輛 的中間罩2 3削減掉相當於該減少寬度份量的面積。如果 能夠削減掉一部分的中間罩2 3的話，可使車體輕量化， 又可提高外觀美感性。 以下，將說明混合型車輛1的動作。 首先，當混合型車輛1啓動時或者低速時，僅以馬達 3當作動力源來行走時，利用電池8所供給的電力，馬達 3將會作動，而令固定在曲軸6上的齒輪3 8旋轉。齒輪 -16- 1237610 (13) 3 8的旋轉將會經由離心式離合器4 1傳達到無段變速機4 的輸入軸42。然後，經過無段變速機4的變速以及經過 減速齒輪組5的減速後的動力，將會經由動力傳達機構 6 1而被傳遞到車軸6 4以使得後輪1 5 R旋轉。 當混合型車輛1以穩定的速度行走時，也就是僅以引 擎2當作動力源來行走時，是以火星塞29令隨著曲軸6 的旋轉而同步地被吸入到汽缸2 7內的燃料混合氣燃燒， 以使活塞2 6進行往復運動。將這種方式所產生的曲軸6 的旋轉經由離心式離合器4 1傳達到無段變速機4和減速 齒輪組5以及動力傳達機構6 1而使得後輪1 5 R旋轉。 高速時或加速時之負荷較大的時候，是以馬達3以及 引擎2同時當作動力源來行走，此時，曲軸6是利用上述 的馬達3之旋轉以及活塞2 6的往復運動而被旋轉驅動。 曲軸6的旋轉經由離心式離合器4 1傳達到無段變速機4 和減速齒輪組5以及動力傳達機構6 1而使得後輪丨5 r旋 轉。這種情況下，是將引擎2的輸出和馬達3的輸出合成 之後的輸出傳達到後輪1 5 R。 是以，馬達3是可利用來自電池單元8所供給的電力 而當作動力源也就是發動機來工作，但是，當電池單元8 的各電池8 a的殘存電容量減少到預定値的時候，有必要 藉由來自於未圖不的控制裝置的指令，令馬達3當成發電 機來工作’將所產生的電力回充電到電池8a。這種情況 的回充電的方法係有··當混合型車輛1減速時，將後輪 1 5 R的旋轉時的動能利用馬達3轉變成電能的方法；以及 -17- 1237610 (14) 將行走中因引擎2的輸出而旋轉的曲軸6的動能的至少一 部分利用馬達3轉變成電能的方法。 這種對於電池8 a的充放電的工作，在於混合型車輛 1行走中是不斷返復地進行。此時，迎面而來的風將會流 經過分開配置的兩個電池單元8之間，可有效地冷卻電池 單元8。此外，散熱水箱9是位在前側位置，所以散熱水 箱9的冷卻效率也很高。 此外，本發明並不限定僅止於上述的實施形態。 例如：在實施形態中的混合型車輛1雖然是以兩輪機 車爲例進行說明，但是，亦可適用到三輪車或者四輪車 輛。 電池單元8也不限定爲將細長形狀的電池8 a予以束 集的形狀’亦可爲以單一個電池8 a來形成一個電池單元 8等等的其他的形態。此外，其配置方式也不限定爲左右 各一個，亦可爲左右各配置複數個。在這種情況下，爲了 保持車寬方向上的良好平衡，最好是將位在中心線L w的 右側的電池單元8的重量設定成與位在中心線Lw的左側 的電池單元8的重量大致相等。 此外，亦可在每一邊配置由各兩個電池單元所構成的 電池單元8，並且將後輪1 5 R側的電池單元8配置在較之 前輪1 5 F側的電池單元8更爲遠離中心線Lw的位置上， 以取代將電池單元8傾斜地配置。即使這種配置方式，亦 可將引擎2配置在後輪1 5 FL側的電池單元8之間，而且可 切除掉中間罩2 3的前側。 -18- 1237610 (15) 此外’動力單元7，只要是可將引擎或馬達的至少其 中一方當作動力源來使驅動輪旋轉者即可，並不限定爲第 3圖所示的結構和配置方式，可做各種的改變。 [發明的效果] 本發明根據上述的結構可發揮下列的效果。 根據本案的第一發明的混合型車輛，是將重量物也就 是電池和引擎配置在車體的前側較低的位置，所以當騎乘 者跨騎在坐墊時的荷重平衡趨於良好，可提高車輛的轉向 操控性。此外，將電池和引擎配置成：在車體的前後方向 上’有一部分是重疊的，所以可謀求車體的緊緻化。 根據本案的第二發明的混合型車輛，是將電池在車體 寬度方向上分開地配置。因爲將電池的重心的位置設在車 體的寬度方向的中心線的附近，所以可提高車體的左右方 向的重心平衡。因此，可提高車輛的轉向操控性。 根據本案的第三發明的混合型車輛，可將引擎配置在 呈傾斜配置的電池之間，可謀求配置空間的效率化。能夠 節約配置空間的話，可將車體整體上的形狀予以小型化， 或者能夠擴大可應用空間。此外，小型化的其中一種例 子，是切除掉車體的外罩的一部份，如此一來，可謀求車 體的輕量化、提高外觀美感性。 根據本案的第四發明的混合型車輛，是將電池和引擎 配置於較之坐墊更前側，所以車體的重心位置是較之坐墊 更爲前側。因此，當騎乘者跨騎在坐墊時，可很容易將荷 -19- 1237610 (16) 重分散到車輛的前側和後側。此外，藉由將電池和引擎的 位置設在較坐墊更前側，可以放低電池以及引擎的重心位 置。因此，可提高車輛的轉向操控性。 根據本案的第五發明的混合型車輛，是將電池和引擎 配置成：位在較之車體的前後方向上的中心線更前側的位 置。因爲車體的重心位置變成靠近中央處，因此，可提高 車輛的轉向操控性。 根據本案的第六發明的混合型車輛，是將坐墊配置於 較之前後方向上的中心線更爲後側處，騎乘者跨騎時的重 量可分散到車體的前後方向上的前側和後側。此外，將引 擎配置在較坐墊更前側，可使得電池和引擎的重心位置更 低。因此，可提高車輛的轉向操控性。 【圖式簡單說明】 第1圖是顯不本發明的實施形態的混合型車輛的結構 之側面透視圖。 第2圖是顯示本發明的實施形態的混合型車輛的結構 之平面圖。 第3圖是沿著第1圖中的A - A剖面線的剖面圖，用 以說明電池與引擎的配置。 第4圖是顯示動力單元的結構的平面圖。 [圖號說明] ]:混合型車輛 -20- 1237610 (17) 2 :引擎 3 :馬達1237610 (1) 发明 Description of the invention [Technical field to which the invention belongs] The present invention relates to a hybrid vehicle having a motor and an engine driven by a battery. [Prior art] Conventionally known hybrid vehicles with internal combustion engines, that is, two-wheeled vehicles, three-wheeled vehicles, four-wheeled vehicles with engines and motors, etc. In order to fully ensure sufficient application space, some of the cylinders of the engine are arranged almost horizontally . In this hybrid vehicle, a battery for supplying power to the motor is disposed in an applicable space, or is located inside an outer panel on both outer sides of the applicable space, or is disposed more forward than the engine. (For example: please refer to Patent Document 1). The hybrid vehicle disclosed in Patent Document 1 has a battery mounted on the front side of the engine and located under the foot plate, and has an air passage and a cooling water passage for cooling the battery. The battery and the engine are arranged in parallel or in series in the air passage or the cooling water passage. In addition, the structure of the battery is: a plurality of battery packs containing a plurality of individual batteries in series or parallel. In addition, a power unit composed of an engine and a motor is connected to a vehicle body frame so as to be swingable in a vertical direction by a link mechanism. [Patent Document 1] Here, Patent Document I refers to: Japanese Patent Application Laid-Open No. 10-2 9 7 5 7 0 (paragraph number 0 02 3; 005 7 to 0 0 6 1; Fig. 3); Fig. 3 1237610 (2) (Figure 12). [Problems to be Solved by the Present Invention] · However, in this hybrid vehicle, the position of the weight, that is, the engine, is "arranged on the rear side compared to the battery mounting position, so the center of gravity of the car body is offset to the rear. In addition, the seat cushion is also provided at the rear side of the vehicle body, so 'when the rider straddles the seat cushion, the center of gravity moves more toward the rear side. From the viewpoint of improving the steering control of the vehicle, it is Set the center of gravity of the vehicle body near the center in the front-rear direction. When the rider straddles the seat cushion, it is better to spread the load forward and backward. Also, if the engine is on the rear side, it will be called: "Applicable Space will reduce the issue of the equivalent of the engine ". The present invention has been developed in order to solve the aforementioned problems, and an object thereof is to provide a hybrid vehicle that can easily disperse a load to improve steering controllability and convenience of the vehicle. [Summary of the Invention] [Means to Solve the Problems] In order to achieve the above object, the hybrid vehicle of the first invention of the present application is an engine (for example, the engine 2 in the embodiment) or a motor (for example, the motor in the embodiment) 3) The output power of at least one of them is transmitted to the driving wheels (for example, the rear wheel 1 5 R in the embodiment), and the footrest plate for placing feet is set to be higher than the seat cushion (for example, the seat cushion 1 2 in the embodiment) 0) Hybrid vehicle (for example, hybrid vehicle in the embodiment -6-1237610 (3)) located further below and in front of the vehicle body)), which is characterized by a battery (for example, The battery unit 8) in the form is arranged below the footrest, and the engine is arranged such that at least a part of the battery unit is located at a position overlapping the battery in the front-rear direction of the vehicle body. In the hybrid vehicle of the present invention, the weight, that is, the battery and the engine are arranged so that at least a part of the vehicle body overlaps in the front-rear direction of the vehicle body, so that the position of the engine can be moved to the front side of the vehicle body. In addition, since the battery is positioned under the foot plate, the center of gravity of the vehicle can be lower than when the battery is arranged near the applicable space. If the battery and engine are configured in this way, the center of gravity of the car body will be located near the center of the front-rear direction and at a lower position. Therefore, the weight balance of the car body can be improved. When a rider straddles the seat cushion of this hybrid vehicle, the load of the rider, the engine, and the battery will be spread to the front and rear directions of the vehicle body. That is, in the state where the rider is not straddling, the load is concentrated on the front side of the vehicle body, but when the rider is striding, the weight of the rider will be added to the body As a result, the load balance between the front and rear of the vehicle body tends to be good as a result. In the hybrid vehicle of the present invention, the battery and the engine are arranged so as to overlap each other in the front-rear direction. Therefore, the length of the body in the front-rear direction can be shortened and the body can be made compact. The hybrid vehicle according to the second invention of the present application is the hybrid vehicle according to the first invention, wherein the battery is configured to be divided into at least two parts in a width direction of the vehicle body, and the engine is disposed to be separately disposed. Between the aforementioned batteries. 1237610 (4) The hybrid vehicle according to the invention has batteries arranged separately in the width direction of the vehicle body. By disposing the weight object, that is, the battery, left and right separately, it is possible to increase the balance of the center of gravity of the vehicle body in the left-right direction by setting the position of the center of gravity of the battery near the centerline in the width direction of the vehicle body. The hybrid vehicle according to the third invention of the present application is the hybrid vehicle according to the second invention, wherein the battery is arranged so as to face the centerline in the vehicle body width direction when viewed from a plan view (for example, the centerline L of the embodiment). w) slanted figure-eight. The hybrid vehicle of this invention is configured with a battery that is inclined toward the centerline of the width direction of the vehicle body, that is, it has a figure-eight shape when viewed from a plan view. Therefore, in the area formed by it, for example: The cylinder head of the engine with a wide shape can save the space for the engine and the battery. The hybrid vehicle of the fourth invention of the present application is a hybrid vehicle that transmits the output power of at least one of the engine or the motor to the drive wheels, and sets the footrest for placing the foot on the front and lower sides of the vehicle body than the seat cushion. It is characterized in that the battery and the engine that supply power to the motor are arranged in a position more forward than the seat cushion in the front-rear direction of the vehicle body. The invention of the hybrid vehicle is to prevent the rider from concentrating the load on the rear side of the seat while placing the battery and engine on the front side of the seat, so that the load can be easily placed. Scattered to the front and rear sides of the vehicle. Further, the position of the engine is set to the front side 'and the position of the engine is lowered. The position of the engine and the position of the battery placed under the foot plate can make the center of gravity of the vehicle lower. -8- 1237610 (5) The hybrid vehicle according to the fifth invention of the present invention is to transmit the output power of at least one of the engine or the motor to the drive wheels, and to place the footrest for the foot more than the seat cushion. The front and bottom hybrid vehicle is characterized in that a battery and an engine that supply power to the motor are arranged to be positioned more forward than a center line in a front-rear direction of the vehicle body. The hybrid vehicle of this invention arranges the weight, that is, the battery and the engine, more forward than the center line in the front-rear direction of the vehicle body. Therefore, it is different from the conventional engine and battery on the rear side of the vehicle body. In comparison, the center of gravity of the car body can be set to the front side. The hybrid vehicle according to the sixth invention of the present application is the hybrid vehicle according to the fifth invention, wherein the seat cushion is disposed further rearward than the centerline. The hybrid vehicle of this invention has the seat cushion disposed at the rear side from the center line, and the rider's weight is mainly borne by the rear side. Here, as described above, the position of the center of gravity of the vehicle body is set on the front side. Therefore, the load can be distributed to the front and rear sides of the vehicle body. In addition, when the engine and battery are placed on the front side, lowering the installation position of these weights can lower the center of gravity of the vehicle. [Embodiment] [Embodiment of the invention] The following describes the embodiment of the present invention with reference to the drawings. As shown in the side view of FIG. 1 and the plan view of FIG. 2, the hybrid vehicle 1 of this embodiment includes: an internal combustion engine, that is, the engine 2; and -9-1237610 (6) a function of an engine or a charger A two-wheeled locomotive of the motor 3 speed Keda. The body frame n of this hybrid vehicle 1 has a structure in which a front frame 12 and a rear frame 14 are connected by a middle frame 13. The engine 2 and the motor 3 constitute a power unit 7 together with the stepless speed changer 4 and the like described in detail later. This power unit 7 is fixed to the middle frame 1 3. The battery unit 8 is composed of a battery 8 a that can supply power to the motor 3 and can be charged by using the power generated by the motor. The battery unit 8 is formed in a direction perpendicular to the width of the vehicle body, that is, in the front-back direction of the vehicle body. The unit 7 is fixed to the middle skeleton 1 3 in an overlapping manner. The battery unit 8 according to this embodiment is a battery equivalent to the battery in the scope of the patent application. A front fork 17 is connected to the front frame 12 to connect the front wheel 1 5 F and the steering handlebar 16, and a front cover 18 is installed. The rear frame 14 is composed of a pipe 14a and a cross member 14b which are bent into a U-shape, and a rear cover 19 is mounted on the rear bone frame 14. An upper part of the rear cover 19 is a seat cushion 20, and a rear part is a tail light 21 and a license plate mounting part 22. In addition, the seat cushion 20 is mounted at a position more rearward than the center line L m in the front-rear direction of the vehicle body. The middle skeleton 13 descends from the part connected to the front skeleton 12 and is divided into two as shown in FIG. 2 near the bottom of the hybrid vehicle I, and uses its rear side and the rear skeleton 1 4 connected. The battery unit 8 and the power unit 7 are fixed to two pipes 1 3 a and 1 3 b where the intermediate frame 13 is divided. In addition, as shown in the figure, on the front side of the intermediate frame 13 is installed: a cooling water tank 9 for cooling the power unit 7; and a temperature-sensitive electric water pump integrated with the cooling water tank 9 ~ 10 -(7) 1237610 (hereinafter referred to as water pump). Furthermore, an intermediate cover 23 is installed on the intermediate frame 13 to cover: a radiator water tank 9, a water pump, a battery unit 8, and a power unit 7. The center portion of the middle cover 23 in the vehicle width direction protrudes upward in the front-rear direction of the vehicle, and footrests 24 are formed on both sides for the rider to rest their feet. In addition, as shown in Fig. 2, the shape of the intermediate cover 23 is gradually narrowed toward the front side of the vehicle body when viewed from a plan view. Here, an example of fixing the power unit 7 and the battery unit 8 to the intermediate frame 13 will be described with reference to FIG. 3. Fig. 3 is a cross-sectional view taken along the line A_a in the figure. The middle frame 23 in the figure is composed of an upper portion 2 3 a and a bottom portion 2 3 b. The battery unit 8 is arranged at the upper portion. 23a and the bottom 23b. The power unit 7 is fixed to each of the pipes 13a, i 3b of the intermediate frame 3 using brackets 9 and 9 respectively. The battery unit 8 is supported and fixed to a support plate 92 having curved portions 92a and 92b corresponding to the shapes of the tubes 13a and 13b. In addition, the intermediate cover 23 corresponding to the upper side of the battery unit 8 will become the leg plate 24. The battery cells 8 shown in FIG. 1 and FIG. 2 are a bundle of cylindrical batteries 8 a whose long axes are kept uniform and parallel, and the batteries 8 a are fixed to each other by a connector agent, etc. Each battery 8a is connected in series with a conductive plate (not shown). In addition, the structure of the battery cell 8 may be a heat-shrinkable film battery pack in which a plurality of cylindrical batteries 8a are bundled together using a plastic member or the like. The battery unit 8 has a slender shape, and its short side is longer than the long axis of the battery 8 a. -11-(8) 1237610 is equal to each other. The long side and the height are based on the number of the battery 8 a bundled. set. In the present embodiment, as shown in the plan view of Fig. 2, the battery unit 8 is mounted on the left and right sides of the hybrid vehicle 1 with the center line Lw in the width direction as a center, and is mounted symmetrically on either side. Each of the battery cells 8 is inclined in a zigzag shape toward the front of the hybrid vehicle 1. That is, 'the end portions 81 of each of the battery cells 8 near the front wheels 15 F side approach each other and have an inclination angle. With the oblique arrangement in this way, the distance between the other end portions 8 2 of the battery cells 8 near the rear wheel 1 5 R side becomes larger, and the space formed by the two other end portions 8 2 It will become a configuration space for configuring the engine 2. For example: the cylinder head 3 0 of the engine 2 is arranged in this configuration space. Therefore, in the plan view of FIG. 2, the two battery cells 8 arranged in an inclined manner are arranged to sandwich the engine 2 from the left and right sides. As can be seen from the side view shown in FIG. In the front-rear direction, the battery unit 8 and the power unit 7 are arranged so that a part of them overlaps. The heat radiating water tank 9 shown in Fig. 1 is located at the rear side of the front soil removal ', and uses an unillustrated cooling water path to circulate cooling water to cool the engine 2 of the power unit 7. The cooling water tank 9 is integrally provided with a water pump, and its cooling surface is configured to be slightly perpendicular to the oncoming wind while driving. In this way, the cooling water tank 9 is integrally formed with the water pump. The number of parts can be reduced, and the mountability can be improved. In addition, the oncoming wind when driving the cooling water tank 9 will flow through the outer surface of the battery unit 8 in the middle cover 23 shown in FIG. 3, so the battery unit 8 is also used by this line -12- 1237610 Ο) Cooled by the oncoming wind. The battery unit 8 of the present embodiment is divided into two parts, which are arranged on the left and right sides. Therefore, the contact area with the wind coming from the vehicle while driving is large, and the cooling efficiency is high. As shown in Fig. 4, the power unit 7 has a short-cylinder engine 2 and a motor 3 is provided at one end of a crankshaft 6. In addition, the crankshaft 6 is connected to the centrifugal clutch 41 by a gear 38, and a tapered continuously variable transmission 4 arranged on the same axis as the centrifugal clutch 4j is connected to the transmission via a reduction gear set 5. A power transmission mechanism 61 that rotates a driving wheel (rear wheel) 1 5 R shown in FIG. 1. The engine 2 is provided with a cylinder block 28 having a cylinder 27 capable of sliding a piston 26 connected to a crankshaft 6 by a connecting rod 25, and a spark plug 29, an intake valve and an exhaust valve (not shown) ) Cylinder head 3 〇. In addition, the cylinder head 30 is provided with a valve lift mechanism 31 of a variable ignition timing method. The rotation of the camshaft 3 2 for driving the opening and closing of the air valve is subject to the ignition timing chain 3 3 between the driving sprocket 6 a hanging around the crankshaft 6 and the driven sprocket 3 2 a of the camshaft 3 2. Controlled. In addition, in order to increase the applicable space 3 4 shown in FIG. 1, the power unit 7 arranges the cylinders 2 7 of the engine 2 slightly horizontally. The motor 3 is an outer rotor type motor in which a rotor 36 is provided on the outer periphery of the stator 35 to rotate with the crankshaft 6. This motor 3 also functions as an engine that can rotate the crankshaft 6 by using the power supplied from the battery unit 8 (refer to FIG. 1) when the engine 2 is started or when high output power is required; and The rotation of the crankshaft 6 is transformed into an electric generator with a kl [battery unit 8 for charging. In addition, after the kinetic energy is converted into electrical energy in these -13-1237610 (10) ways, the process of charging the battery unit 8 is called "recharging". As for the action during "recharge", it will be described in detail later. Between the motor 3 and the connecting rod 25 on the crankshaft 6, a clutch 37 and a gear 38 are arranged. The clutch 37 has a function of connecting and disconnecting the engine 2 and the motor 3 ', for example, it is constituted by a wet clutch. And by passing through this clutch 37, all the energy generated by the engine braking (pumping loss, mechanical loss) during deceleration can be regenerated. By recovering the energy when the engine is braked in this way, the efficiency of energy recovery can be further improved. The gear 38 is engaged with the centrifugal clutch 41. The centrifugal clutch 41 is arranged on the same shaft as the input shaft 42 of the continuously variable transmission 4. As the rotation speed increases, the inner ring of the clutch will be connected to the outer ring of the clutch that can be rotated integrally with the input shaft 42. One-way clutch. The stepless speed changer 4 is a cone 4 6 having a support shaft 4 7 to pivotally support the driven surface 4 3 on the input shaft 4 2 side and the driven surface 4 5 on the output shaft 4 4 side. structure. The support shaft 47 is mounted on the conical generatrix of the output shaft. In response to the number of revolutions of the input shaft 42, the centrifugal mechanism 48 will cause the clamp 4 9 that pivots the support shaft 4 7 to slide, thereby changing the driven surface 4 The contact positions of 3, 4 5 and the cone 4 6 further change the gear ratio of the stepless speed changer 4. A reduction gear set 5 is provided at the rear stage of the stepless transmission 4. The reduction gear set 5 is composed of the gear 5 1 and the gear 5 2, and the gear 5 3, and the gear 5 4 of the output shaft 44 of the stepless speed changer 4. Each gear 5 1, 5 2, 5 3 , 5 4 meshes to slow down the power. -14-(11) 1237610 The power transmission mechanism 61 is provided between the driving sprocket 6 3 wound around the driving wheel rocker 6 2 and the driven sprocket 6 5 of the axle 64 shown in FIG. 1. The driving chain 66 functions to transmit the rotation generated by the power unit 7 to the rear wheels 1 5 R. The driving wheel rocker 62 is configured to pivotally support the axle 64 with a main arm 62a covering the driving chain 66 and an auxiliary arm 62b facing through the rear wheel 15R. The main arm 62a and the auxiliary arm 62b are respectively The bearing is mounted so as to be swingable with respect to the power unit 7. In addition, on the power unit 7 side, the main arm 6 2 a and the auxiliary arm 6 2 b are connected by a cross member 6 2 c to prevent the drive wheel rocker arm 6 2 from being twisted and deformed. The axle 64 is a rim 6 7 that connects the rear wheels 1 5 R. The rear shock absorber 70 of the rear wheel 15 R is as shown in Fig. 1. When viewed from the side view, it is located on the lower side of the applicable space 34 for accommodating helmets, etc., and is mounted on the rear frame. !! 4 and the driving wheel rocker 6 2. In this embodiment, since the power unit 7 is disposed on the front side, there is more room in the rear side of the vehicle body, so that the applicable space can be expanded by a space equivalent to the margin. Next, the effects of the arrangement of the battery unit 8 and the engine 2 will be described. In this hybrid vehicle 1, the battery unit 8 is arranged at a position which is slightly symmetrical with respect to the center line Lw in the vehicle width direction, and the position of the center of gravity of the battery unit 8 is set near the center line Lw. Left and right balance. In addition, the power unit 7 is arranged as if it is sandwiched by the battery unit 8, so that the engine 2 can be positioned in a forward position -15-1237610 (12). Since the heavy battery cells 8 and the power unit 7 are collectively arranged near the center in the front-rear direction of the hybrid vehicle 1, the weight balance in the front-rear direction can be improved. Therefore, for example, even when the drive wheel rocker 62 is swung, the hybrid vehicle 1 can maintain good steering maneuverability. In particular, the battery unit 8 and the engine 2 (cylinder head 30 and cylinder block 2 8) are disposed more forward than the center line L m. Therefore, when the rider straddles the seat cushion 20, the battery unit 8 and the engine 2 2 and the rider's weight will be dispersed to the front and rear of the vehicle body, so good steering control can be maintained. In addition, placing the seat cushion 20 on the rear side more than the center line Lm also helps to spread the load applied to the vehicle body forward and backward. By disposing the battery unit 8 under the foot plate 24, the center position in the height direction of the vehicle body can be lowered. Furthermore, since the engine 2 which is arranged more forward than the seat cushion 20 is at a low position sandwiched by the battery unit 8, the position of the center of gravity of the vehicle body can be lowered. Since the battery unit 8 is arranged obliquely, the width in the vehicle width direction of one end portion 81 side of the battery unit 8 can be reduced compared to the width in the vehicle width direction of the other end portion 82. Therefore, the vehicle's middle cover 23 can be reduced by an area equivalent to the reduced width. If a part of the middle cover 23 can be reduced, the weight of the vehicle body can be reduced, and the aesthetic appearance can be improved. Hereinafter, the operation of the hybrid vehicle 1 will be described. First of all, when the hybrid vehicle 1 is started or at a low speed, and only the motor 3 is used as the power source to walk, the electric power supplied by the battery 8 will be used to drive the motor 3 to make the gear 3 8 fixed on the crankshaft 6 Spin. The rotation of the gear -16-1237610 (13) 3 8 will be transmitted to the input shaft 42 of the continuously variable transmission 4 via the centrifugal clutch 41. Then, the power after the speed change of the stepless speed changer 4 and the speed reduction through the reduction gear set 5 will be transmitted to the axle 64 through the power transmission mechanism 61 to rotate the rear wheels 15 R. When the hybrid vehicle 1 is traveling at a stable speed, that is, only the engine 2 is used as the power source, the fuel is drawn into the cylinder 2 7 synchronously with the rotation of the crankshaft 6 by the spark plug 29 The mixture is burned to reciprocate the piston 26. The rotation of the crankshaft 6 generated in this way is transmitted to the continuously variable transmission 4 and the reduction gear set 5 and the power transmission mechanism 61 via the centrifugal clutch 41 to rotate the rear wheels 15 R. When the load at high speed or acceleration is large, the motor 3 and the engine 2 are used as the power source to travel at the same time. At this time, the crankshaft 6 is rotated by the rotation of the motor 3 and the reciprocating motion of the piston 26. drive. The rotation of the crankshaft 6 is transmitted to the continuously variable transmission 4 and the reduction gear set 5 and the power transmission mechanism 61 via the centrifugal clutch 41, so that the rear wheels 5r are rotated. In this case, the output of the engine 2 and the output of the motor 3 are transmitted to the rear wheels 1 5 R. Therefore, the motor 3 can use the power supplied from the battery unit 8 as a power source, that is, an engine. However, when the remaining electric capacity of each battery 8 a of the battery unit 8 is reduced to a predetermined value, there is It is necessary to make the motor 3 work as a generator by a command from a control device (not shown) to 'recharge the generated power to the battery 8a. The method of recharging in this case is a method of converting the kinetic energy during rotation of the rear wheels 1 5 R into electric energy when the hybrid vehicle 1 decelerates; and -17-1237610 (14) walking At least a part of the kinetic energy of the crankshaft 6 that is rotated by the output of the engine 2 is converted into electrical energy by the motor 3. This charging and discharging operation of the battery 8a is performed repeatedly while the hybrid vehicle 1 is running. At this time, the oncoming wind will flow between the two battery cells 8 arranged separately, and the battery cells 8 can be effectively cooled. In addition, since the radiator water tank 9 is located at the front side, the cooling efficiency of the radiator water tank 9 is also high. The present invention is not limited to the above-mentioned embodiments. For example, although the hybrid vehicle 1 in the embodiment is described by taking a two-wheeled vehicle as an example, it can also be applied to a three-wheeled vehicle or a four-wheeled vehicle. The battery cell 8 is not limited to a shape in which the elongated battery 8a is bundled. It may also be another form in which a single battery 8a is used to form one battery cell 8 or the like. In addition, the arrangement method is not limited to one on the left and right, and a plurality of arrangements on the left and right are also possible. In this case, in order to maintain a good balance in the vehicle width direction, it is best to set the weight of the battery cell 8 on the right side of the center line L w to the weight of the battery cell 8 on the left side of the center line L w Roughly equal. In addition, a battery unit 8 composed of two battery units can be arranged on each side, and the battery unit 8 on the rear wheel 1 5 R side is further away from the center than the battery unit 8 on the front wheel 1 5 F side. Instead of arranging the battery cells 8 obliquely, the line Lw is positioned. Even with this arrangement, the engine 2 can be arranged between the battery units 8 on the rear wheels 1 5 FL side, and the front side of the middle cover 23 can be cut off. -18- 1237610 (15) In addition, the 'power unit 7' is not limited to the structure and arrangement shown in FIG. 3 as long as it can use at least one of an engine or a motor as a power source to rotate the driving wheels. Way, can make various changes. [Effects of the Invention] The present invention can exhibit the following effects according to the above-mentioned configuration. According to the hybrid vehicle of the first invention of the present invention, the heavy object, that is, the battery and the engine are arranged at a lower position on the front side of the vehicle body, so the load balance when the rider rides on the cushion tends to be good, which can improve Steering control of the vehicle. In addition, since the battery and the engine are arranged such that a part of them overlap in the front-rear direction of the vehicle body, the vehicle body can be made compact. The hybrid vehicle according to the second aspect of the present invention is a battery in which the batteries are arranged separately in the width direction of the vehicle body. Since the position of the center of gravity of the battery is set near the centerline in the width direction of the vehicle body, the balance of the center of gravity of the vehicle body in the left and right directions can be improved. Therefore, the steering controllability of the vehicle can be improved. According to the hybrid vehicle of the third aspect of the present invention, the engine can be arranged between the batteries arranged in an inclined manner, and the space for the arrangement can be improved. If the layout space can be saved, the overall shape of the vehicle body can be miniaturized, or the applicable space can be expanded. In addition, one example of miniaturization is to remove a part of the outer cover of the car body. In this way, it is possible to reduce the weight of the car body and improve the aesthetic appearance. The hybrid vehicle according to the fourth invention of the present application has the battery and the engine disposed more forward than the seat cushion, so the center of gravity of the vehicle body is positioned more forward than the seat cushion. Therefore, when the rider straddles the seat cushion, it is easy to redistribute the charge -19-1237610 (16) to the front and rear sides of the vehicle. In addition, by positioning the battery and the engine more forward than the seat cushion, the center of gravity of the battery and the engine can be lowered. Therefore, the steering controllability of the vehicle can be improved. The hybrid vehicle according to the fifth invention of the present application is configured such that the battery and the engine are positioned more forward than the center line in the front-rear direction of the vehicle body. Since the center of gravity of the vehicle body becomes closer to the center, the steering control of the vehicle can be improved. The hybrid vehicle according to the sixth invention of the present invention is that the seat cushion is disposed on the rear side than the center line in the front and rear directions, and the rider's weight when straddling can be dispersed to the front and rear sides of the vehicle body. side. In addition, placing the engine on the front side of the seat cushion lowers the center of gravity of the battery and engine. Therefore, the steering controllability of the vehicle can be improved. [Brief Description of the Drawings] Fig. 1 is a side perspective view showing the structure of a hybrid vehicle according to an embodiment of the present invention. Fig. 2 is a plan view showing the structure of a hybrid vehicle according to an embodiment of the present invention. Fig. 3 is a cross-sectional view taken along the line A-A in Fig. 1 to illustrate the arrangement of the battery and the engine. Fig. 4 is a plan view showing the structure of the power unit. [Illustration of drawing number]]: Hybrid vehicle -20- 1237610 (17) 2: Engine 3: Motor
8 :電池單元 8 a :電池 20 :坐墊 24 :置腳板 L m ·中 >l_j、線 L w。中屯、線8: Battery unit 8 a: Battery 20: Seat cushion 24: Footboard L m · Medium > l_j, line L w. Zhongtun, line
-21 --twenty one -