200302716 (1) 玖、發明說明 【發明所屬的技術領域】 本發明是關於用來供高齡者或腳不方便的人利用的® 輪的小型電動車輛。 【先前技術】 這種小型電動車輛例如是被稱作爲高齡者代步車（ Seniorcar ) (R)等，在替高齡者代步方面有非.常高的利 用價値。在小型車輛的基本構造，例如在車體後部設置有 讓搭乘者乘坐的座墊，在其前方設置有用來承載駕駛者的 腳的地板，且在其前方立設有用來操縱前輪方向的轉向軸 。在轉向軸的上端安裝有車把，搭乘者會乘坐於座墊來操 作該車把。 通常，雖然搭載有用來將電力供給到驅動後輪的電動 馬達的電池，在以往使用鉛蓄電池時，在車體全體的重量 分配的關係下，一般電池是配置在座墊的下方。在這種電 動車輛，其動力源是全部依賴所搭載的電池，電池必然會 大型化。因此，電池的配置空間或重量，是佔該車輛的相 當的比例。 在如上述構成的小型電動車輛中，在車把附近配設有 加速柄，握住加速柄的話會藉由馬達來驅動後輪，離開加 速柄的話，則組裝於馬達的電磁制動器會作用來制動後輪 -5- (2) (2)200302716 【發明內容】 〔發明欲解決的課題〕 可是，如上述以往的電動車輛，在將電池搭載於座墊 下方時，由於要以外殼來覆蓋大體積的電池，結果會讓人 對車輛的外觀有笨重的印象。而雖然想利用座墊下方的空 間來確保放東西或踩腳的空間，而由於如上述配置有電池 ，而無法活用座墊下方的空間。 而雖然有爲了確保座墊下方的空間而將電池配置在地 板的例子，而這種情況要將電池配置成與地板同等的高度 也很困難。 在上述的習知的小型電動車輛，是作成：藉由將加速 柄放開，來讓組裝於馬達的電池制動器產生作用的構造。 在這種制動器構造，雖然有在要停車時可確實讓車停下的 優點，而由於不像一般的車輛是由搭乘者本身積極操作來 進行煞車的構造，會產生不協調感。 在如上述具備有電磁制動器的小型電動車輛，雖然也 有在車把附近配設制動柄的種類，可是大部分是使用在藉 由離合器機構切換馬達與後輪的連接用手推車輛時，其使 用頻率很少。雖然也可以使用作爲電磁制動器的輔助功能 ，除了電磁制動器之外的制動柄的操作的制動是很有效， 可是有時制動柄的操作量和搭乘者想要的制動量會有差距 〇 本發明鑑於這種情況，其目的要提供一種具有能有效 率地配置作爲車輛電源的電池的電池搭載構造等的小型電 -6- (3) (3)200302716 動車輛。 且本發明的目的是要提供一種用腳操作不會有不協調 感’且能依照搭乘者本身的想法來進行制動操作的小型電 動車輛。 〔用以解決課題的手段〕 本發明的小型電動車輛，在支承於框架上的單人座墊 的下方則方，具有舖設於上述框架上的地板，是作成能以 :作爲藉由車把操作可向左右擺動的轉向輪且設置於上述 地板的前方的左右的一對前輪、及作爲以動力單元所驅動 的驅動輪且設置於上述單人座墊的下方後部的左右的一對 後輪來行駿，具備有用來將電力供給到上述動力單元的二 次電池的小型電動車輛，其特徵爲：在上述地板的主要區 域’在沿著其兩側緣部配置的上述框架相互之間，收容著 具有與該框架略同等高度的電池盒體，在電池盒體內具有 排列設置了複數的上述二次電池的電池單元。 在本發明的小型電動車輛，上述地板，是由：位在上 述前輪的更後方且具有與上述前輪的左右相對向間隔大略 相等的寬度的主地板部、以及以較上述前輪的左右相對向 間隔更狹小且較上述主地板部更狹小的寬度延伸設置到上 述主地板部的前方的前地板部所構成，是將上述電池盒體 配置在藉由上述主地板部所構成的上述地板的主要區域。 在本發明的小型電動車輛，上述框架，是由：沿著上 述主地板部的左右兩側緣部向前後延伸的中心框架部、以 -7- (4) (4)200302716 較上述前輪的左右相對向間隔更小的相對向間隔延伸設置 到上述中心框架部的前方的前框架部、以及從上述中心框 架部向後方延伸設置的用來支承上述單人座墊與上述動力 單元及上述後輪的後框架部所構成，將上述電池盒體配置 在構成上述中心框架部的主框架構件的相互之間。 在本發明的小型電動車輛，在上述電池盒體的前方是 具有由：朝左右延伸經過左右上述前輪的相對向之間，且 突出到該電池盒體的更下側的剛性構件所構成的突出構造 ’該突出構造是突出配置在上述前框架部的下方。 在本發明的小型電動車輛，上述突出構造，是藉由可 自由旋轉且可擺動地支承前輪的前輪支承機構所構成，該 前輪支承機構，是包含有：被保持在前框架部的下方的支 承部、被固定在該支承部上的懸吊臂托架、以及可朝上下 方向自由擺動地藉由該懸吊臂托架所支承著，從車輛的左 右方向中央部朝向外側延伸設置且以其外側端部可自由旋 轉地支承上述前輪的懸吊臂。 在本發明的小型電動車輛，是將圓柱狀的上述二次電 池排列在同一平面來將其收容在上述電池盒體內’在該電 池盒體的底部具備有形成爲對應上述二次電池的外型的複 數的凹凸狀的保持部。 在本發明的小型電動車輛’在配設於上述地板的後方 的上述單人座墊的下方前半部’是配設有：用來將應供應 於上述動力單元的電力進行電子控制的主控制器 '及用來 對上述電池單元的二次電池進行充電的充電裝置’這些構 -8- (5) (5)200302716 造是藉由從上述地板一體地連續設置的車體外殼所覆蓋， 並且在位於上述主控制器及充電裝置的後方的左右的一對 後輪之間的空間，是架設有箱狀或籠狀的行李收容裝置。 在本發明的小型電動車輛，在上述行李收容裝置的上 部是開設有用來讓行李等出入的開口，並且上述單人座墊 是可轉動地被支承在從上述框架所立設的座墊柱上，是以 上述單人座墊從上方可開閉地覆蓋上述行李收容裝置的開 口的其中一部分或全部。 在本發明的其他型態的小型電動車輛，是具備有：支 承於框架上的單人座墊、在上述單人座墊的下方前方組成 於上述框架上的地板、作爲藉由車把操作可向左右擺動的 轉向輪且設置於上述地板的前方的左右的一對前輪、作爲 以動力單元所驅動的驅動輪且設置於上述單人座墊的下方 後部的左右的一對後輪、以及用來將電力供給到上述動力 單元的二次電池之小型電動車輛，其特徵爲：是分別針對 上述左右的一對後輪設置制動機構，並且是將用來操作上 述制動機構的制動踏板配置在上述地板的前部。 在本發明的小型電動車輛，上述框架，是藉由：具有 在車體的左右兩側朝前後延伸的中心框架部及延伸設置到 上述中心框架部的前方且具有較上述前輪的左右相對向間 隔更小的相對向間隔的前框架部的左右的主框架、以及從 上述中心框架部向後方延伸設置且用來支承上述單人座墊 與上述動力單元與上述後輪的後框架所構成，在上述主框 架上組成了上述地板。 -9- (6) (6)200302716 在本發明的小型電動車輛，是固定有架在上述左右的 主框架之間的制動踏板座，藉由上述制動踏板座來支承著 上述制動踏板。 在本發明的小型電動車輛，在上述左右的主框架的中 心框架部之間搭載了用來將電力供給到上述動力單元的二 次電池，上述制動踏板座是被配置在上述二次電池的前方 〇 在本發明的小型電動車輛，在上述左右的主框架的前 框架部下方是在上述制動踏板座的前方配置有上述前輪支 承機構的至少其中一部分。 在本發明的小型電動車輛，上述制動踏板，是由：朝 左右延伸的略長方形狀的踏板部、及固定在上述踏板部的 背面側的左右的一對踏板臂部所構成，上述左側的踏板臂 部是聯繋於上述左側的後輪的制動機構，上述右側的踏板 臂部是聯繫於上述右側的後輪的制動機構。 在本發明的小型電動車輛，上述制動踏板是由相鄰配 置的左右的一對制動踏板所構成，上述左邊的制動踏板， 是由：踏板部、及固定在上述踏板部的背面側，聯繋於上 述左側的後輪的制動機構的踏板臂部所構成，上述右邊的 制動踏板，是由：踏板部、及固定在上述踏板部的背面側 ，聯繋於上述右側的後輪的制動機構的踏板臂部所構成。 藉由本發明，配合在這種小型電動車輛的車輛框架的 設計，藉由有效率地配置電池單元來有效地確保地板面。 也就是說在地板的主要區域，在沿著其兩側緣部配置的框 -10- (7) 200302716 架相互之間，收容具有與該框架的高度大 體，在該電池盒體內排列配置複數的二次 二次電池排列在同一平面上，將電池搭載 薄。藉此既可確保最低的離地高度，又可 面的地板，可以確保腳下的有效空間。而 配置在車輛的最下部達成低重心化，可以 穩定性。 藉由本發明的其他型態，是分別針對 設置制動機構，並且由於是將用來操作制 板配設在地板的前部，所以用腳操作不會 以根據搭乘者本身的想法來進行制動操作 【實施方式】 以下根據圖面來說明本發明的小型電 施型態。 第1圖〜第5圖，是顯示該實施型態 的全體構造。 該實施型態是四輪小型電動車輛的例 ，在包含車體框架的框架單元1 0 0的前 左右的一對前輪1及後輪2。前輪1是藉 2 0 0 ，而後輪2是藉由後輪支承機構3 承著。 在靠近框架單元1 0 0的後部，是支 搭乘者乘坐的單人座墊的座墊單元4 0 0 略相同的電池盒 電池。將複數的 空間設定爲非常 實現具有寬廣平 藉由將電池單元 提昇靜態及行駿 左右的一對後輪 動機構的制動踏 有不協調感，可 動車輛的較佳實 的小型電動車輛 子，在這些圖中 後部分別支承著 由前輪支承機構 0 0而分別被支 承著組成讓一個 。在單人座墊的 -11 - (8) (8)200302716 下方前方，具有舖設於車體框架上的構成低式的承載搭乘 者腳部的地板的地板薄板3。在地板薄板3的前部附近， 配置有制動踏板8 0 0。在框架單元1 〇 〇的前部，具有 作爲藉由車把操作而會左右擺動的轉向輪.的用來操縱前輪 1的方向的操舵機構5 0 0。 在該例中，後輪2構成驅動輪，是藉由設置在單人座 墊的下方後部的包含電動馬達的動力單元6 0 0所驅動。 在本發明中，在地板薄板3的下側，配置了具備有用來將 電力供給到動力單元6 0 0的二次電池的電池單元7 0 0 。而在左右的後輪2是分別設置有藉由制動踏板8 0 0所 操作的制動機構。 框架單元1〇〇，參照第6圖〜第8圖，是由：構成 底盤部分的車體框架1 〇 1、與支承轉向車把等的轉向臂 1 0 2所構成’車體框架1 〇 1包含有：主框架1 〇 3與 後框架1 〇 4。主框架1 〇 3則是由：中心框架部1 〇 5 與延伸設置到中心框架部1 〇 5的前方的前框架部1 〇 6 所構成。 主框架1 0 3 ，在左右兩側包含朝前後方向配置的一 對主框架構件1 〇 7，主框架構件1 〇 7，在中心框架部 1 〇 5及前框架部1 〇 6的交界附近處，是如8圖所示的 則端較狹窄的形狀。主框架構件1 〇 7雖然最好是藉由方 管材料來形成’而並不限於此，也可以用c槽型材料或圓 管材料來形成。不管哪種情況，主框架構件1 〇 7都具有 一疋的高度（上下方向的厚度）。在各主框架構件1〇 7 -12- 200302716 Ο) 是附設有朝向外側突出例如是圓管材料構成的提抓用手柄 111° 在該例中，在主框架構件1 0 7，是在其前端部、中 心框架部1 0 5及前框架部1 0 6的交界處附近、以及後 端部橫架有三個架橋構件1 〇 8、1 0 9、1 1 0，藉此 來確保主框架1 0 3的高剛性。架橋構件1 0 8、1 0 9 ’如第7圖所示，是朝下方突出地彎曲形成，且讓後述的 前輪支承機構的基座構件被配置在架橋構件1 〇 8、 1 0 9上。在實車上，如第7圖所示，主框架1 0 3是適 度朝前上方傾斜的狀態，此時前輪支承構件的基座構件是 大致被水平支承著。 轉向框架1 0 2，如第9圖所示，是讓四支管材 1 0 2 a〜d在前框架部1 〇 6的前端部內側一體地立設 而被支承著。轉向框架1 〇 2雖然是從前框架部1 0 6 ( 主框架構件1 0 7 )垂直立起，而由於如上述主框架 1 0 3是朝前上方傾斜，所以轉向框架1 〇 2是適度地朝 單人座墊側傾斜。轉向框架1 〇 2是藉由適當的方管材料 所形成。 後框架1 0 4，是從各主框架構件1 〇 7的後端部附 近朝後上方傾斜配置，在個別的後端部藉由提抓用手柄 1 1 2來相互結合。在後框架1 〇 4的大槪前後方向中， 是橫架有大槪拱形或梯形的架橋構件1 1 3 ，在架橋構件 1 1 3的上部是安裝有用來支承座墊單元4 0 0的座墊柱 1 1 4 °後框架1 0 4或架橋構件1 1 3，雖然最好是藉 (10) (10)200302716 由方管材料來形成，而並不限於此，也可以用c槽型材料 或圓管材料來形成。在後框架1 0 4的後端部還橫架有朝 下方突出地彎曲形成的架橋構件1 1 5。 前輪支承機構2 0 0，是可自由旋轉且可擺動地支承 著前輪1 ，是包含有：被保持於前框架部10 6的下方作 爲支承部的基座構件2 0 1、固定於基座構件2 0 1上的 懸吊臂托架2 0 2、以及可朝上下方向自由擺動地藉由懸 吊臂托架2 0 2所支承著，從車輛的左右方向中央部朝外 側延伸設置且以其外側端部可自由旋轉地支承前輪1的懸 吊臂2 0 3。 主要藉由該前輪支承機構200，構成了由：在後述 的電池盒體的前方朝左右延伸經過左右的前輪1的相對向 之間，且突出到該電池盒體的更下側的剛性構件所構成的 突出構造。也就是說該突出構造，是如第1圖〜第5圖或 第7圖所示，是由：突出到前框架部1 0 6的下方配置組 成的基座構件2 0 1 、懸吊臂托架2 0 2以及懸吊臂 2 〇 3等所構成，藉由讓該突出構造保持於電池盒體的前 方及下側，構成了具有作爲車輛的電源裝置的重要機能的 電池盒體的屏障或防護手段，而可以有效地保護精密的電 源裝置。即使具有這種突出於前框架部1 0 6的下方的突 出構造，而由於在實車中地板3是朝前上方傾斜配置（參 照第7圖）所以不會伸出到下方，而可有效地確保最低離 地高度。 在前輪支承機構2 0 0，參照第9圖，在主框架 -14- (11) (11)200302716 1 0 3的配置於架橋構件1 ο 8、1 0 9上的基座構件 2 0 1上，是分別對於左右的懸吊臂2 0 3設置有前後兩 個懸吊臂托架2 0 2。各懸吊臂2 0 3是前後分歧成雙股 狀，其分歧的兩個基端是藉由前後兩個懸吊臂托架2 0 2 所軸支承。在懸吊臂2 0 3的前端，是可轉動地軸支承著 门字型的關節部2 0 4。在關節部2 0 4是水平地延伸設 置著車軸部2 0 5，在該車軸部2 0 5是可自由旋轉地支 承著前輪1。 在前框架部1 0 6的外側部是固定著用來架設懸吊彈 簧206的托架207，在該托架207與懸吊臂203 (分歧成雙股狀的前側）之間安裝有懸吊彈簧2 0 6。 後輪支承機構3 0 0，會與動力單元6 0 0 —起作動 來支承後輪2。在這種情況，動力單元6 0 0包含有電動 馬達及連結到其輸出軸的減速齒輪組，最終段的齒輪的支 軸構成了後輪2的車軸3 0 1。動力單元6 0 0的前端側 ，是經由固定在主框架構件1 〇 7的後端的托架3 0 2 ( 參照第1圖〜第3圖）所樞支著。動力單元6 〇 〇的後端 側’是與減震器3 0 3的下端連結。減震器3 0 3的上端 ’是經由固定在後框架1 〇 4的後端的托架3 0 4所樞支 著。而減震器3 0 3 ，可以是利用壓縮線圈彈簧或利用油 壓的構造。 在座墊單元4 0 〇，是讓以方管材料等所形成的座墊 緩衝框架4 0 1及座墊靠背框架4 0 2結合成略l字型且 一體化，讓座墊緩衝框架4 0 1保持略水平而被支承在座 -15- (12) (12)200302716 墊柱1 1 4上。在該情況，座墊單元4 〇 0會被支承爲可 左右轉動且可選擇性地固定到轉動途中的複數的角度位置 〇 在座墊緩衝框架4 〇 1是安裝有組成爲彈性體的座墊 緩衝器4 0 3，在座墊靠背框架4 〇 2是安裝有組成爲彈 性體的座墊靠背4 0 4。在座墊靠背框架4 〇 2的適當的 高度位置，是可轉動地支承著扶手架4 〇 5。如第3圖所 示’搭乘在支承於座墊柱1 1 4上的座墊單元4 0 0的搭 乘者，可以將腳放在地板薄板3，此時可以踩踏配置於地 板薄板3的前部附近的腳制動器。 接下來說明單人座墊的轉動支承機構的組成例子。在 第1 0圖中’是讓基座托架4 0 6結合於座墊緩衝框架 4 0 1的下側，在該基座托架4 0 6是下垂有座墊管體 407。而管座408是嵌合在座墊柱114，座墊管體 4 0 7是可旋轉地內嵌於該管座4 0 8。藉此讓座墊緩衝 框架4 0 1也就是單人座墊可左右轉動。而管座4 〇 8也 可以裝卸於座墊柱1 1 4。 在基座托架4 0 6是固定安裝著在其前部具有軸承 4〇9的柄座4 1 0。旋轉軸4 1 1插通在軸承4 0 9 ， 旋轉軸4 1 1是朝外側延伸設置且藉由如圖示的適當的彎 曲而形成柄部4 1 2。在旋轉軸4 1 1 ，是固定安裝有從 開設於基座托架4 0 6的開口 4 1 3朝下方突出的爪片部 4 1 4。以柄部4 1 2的操作可以轉動爪片部4 1 4。爪 片部4 1 4 ’具有可與後述的擋板的齒部卡合的孔部 -16- (13) (13)200302716 4 1 4 a 。另一方面，在管座4 0 8的上端固定安裝有擋 板4 · 1 5 ，在擋板4 1 5的外周部是以適當的角度間隔設 置有複數的齒部4 1 6。各齒部4 1 6的兩側則切除作爲 待避部，藉此可與爪片部4 1 4卡合。 藉由將座墊管體4 0 7插入到管座4 0 8 ，則單人座 墊會被支承在座墊柱1 1 4上。此時，藉由利用柄部 4 1 2的操作來使爪片部4 1 4與所想要的齒部4 1 6卡 合，則能夠以所想要的角度位置選擇性地固定住單人座墊 〇 在操舵機構5 0 0，參照第5圖或第9圖等，在轉向 框架1 0 2的內側是中介著複數的保持座5 0 2而可自由 旋轉地保持著轉向軸5 0 1。轉向軸5 0 1 ，在長軸方向 的中間部是經由萬向接頭5 0 3而彎曲傾斜向單人座墊側 ，在其上端部是經由托架或底盤部5 0 4而支承著轉向車 把5 0 5。轉向車把5 0 5是呈現前部分缺口的變形U字 型，可以一邊把持住轉向車把5 0 5的適當位置一邊轉動 操作安裝於底盤部5 0 4的加速柄5 0 6。 在前框架部1 0 6的各主框架構件1 〇 7的前端部內 側，安裝有托架507，在該托架507上是設置有用來 旋轉自如地支承轉向軸5 0 1的下端的轂部。在托架 5〇7上的轉向軸5 0 1的後側，是配置有具有與設置於 轉向軸5 0 1的下端的齒輪嚙合的齒輪的副軸5 0 8。在 副軸5 0 8固定有橫拉桿臂5 0 9 ，而將轉向軸5 0 1朝 右或朝左旋轉時，會經由副軸5 0 8讓橫拉桿臂5 0 9朝 -17- (14) (14)200302716 右側或左側轉動。 在各前輪1 ，固定安裝於關節部2 0 4的關節臂 5 1 0與橫拉桿臂5 0 9會經由橫拉桿5 1 1相互地連結 在一起。藉由將轉向車把5 0 5向左右旋轉，則經由：轉 向軸5 0 1、副軸5 0 8、橫拉桿臂5 0 9及橫拉桿 5 1 1 ，讓前輪朝右邊或左邊轉向。藉由設置副軸5 0 8 ，則可以朝向轉向車把5 0 5的轉動方向相同的方向來將 前輪1轉向。此時，藉由適當地選擇轉向軸5 0 1側的齒 輪與副軸5 0 8側的齒輪的齒輪比，則可適當地設定轉向 角及轉向力。 這裡的第1 1圖及第1 2圖，是顯示轉向車把周圍。 轉向車把5 0 5，是具有直線桿部5 0 5 S及從直線桿部 5 0 5 S的左右兩端圓弧狀地延伸的側桿部5 〇 5 L、 5 0 5 R，如上述其前部是呈現缺口的變形u字型。 在轉向軸5 0 1的上端側面，是設置有朝向後方延伸 且從途中向上方彎曲的轉向車把支承部5 1 2。在轉向車 把支承部5 1 2的前端是固定有夾板構件5 1 3。夾板構 件5 1 3具有朝左右貫穿的孔部，是分割爲上下部分的構 件’其下側的夾板構件5 1 3 a是被焊接在轉向車把支承 部5 1 2的則端’上側的夾板構件5 1 3 b則是經由螺栓 5 1 4被鎖裝在下側的夾板構件5 1 3 a。 藉由以上述夾板構件5 1 3的夾入來支承著轉向車把 5 0 5的直線桿部5 0 5 S的中央。於是，藉由放鬆螺栓 5 1 4，則轉向車把5 0 5 ，可將直線桿部5 〇 5 S當作 -18 - (15) (15)200302716 軸轉動（參照圖中箭頭r )，可將轉向車把5 0 5躺下， 或將其立起來調節到所想要的角度。 如上述在從轉向軸5 〇 1的軸線上偏置到單人座墊側 的位置’使所支承的轉向車把5 〇 5躺下的狀態，也就是 ’如第1 2圖所示’在讓轉向車把垂直於轉向軸5 〇 1的 狀態’是讓轉向車把5 0 5的中心與轉向軸5 0 1的軸線 大略一致。 在轉向車把5〇5的左右側桿部505L、505R 是藉由焊接等方式固定安裝有朝向內側稍微下方的托架 5 1 5。藉由這些托架5 1 5支承著底盤部5 04的兩側 。固定著的底盤部5 0 4，是位在轉向車把5 0 5的內側 且深處的位置。 在底盤部5 0 4的左右兩側是配設有加速桿5 0 6。 加速桿5 0 6是作成略门字型，在將開口側朝向下方的狀 態會以底盤部5 0 4的側邊部分可自由轉動地分別支承其 中一邊的側邊部5 0 6 a 。而另一邊的側邊部5 0 6 b， 是在作爲操作柄部的轉向車把5 0 5的側邊桿部5 0 5 L 、5 0 5 R的下方是配置成略平行於該側邊桿部5 0 5 L 、5 0 5 R。於是，可以一邊把持住轉向車把5 0 5的側 邊桿部5 05L、505R —邊轉動操作加速柄506。 而如果將加速柄5 0 6的另一邊的側邊部5 0 6 b配合轉 向車把5 0 5的側邊桿部5 0 5 L、5 0 5 R作成略圓弧 狀的話，則即使在把持住轉向車把5 0 5的側邊桿部 5 0 5 L、5 0 5R的上部或下部時，也可容易地轉動操 -19- (16) (16)200302716 作加速柄5 0 6。 在底盤部5 0 4的兩側邊部分，是配設有：可自由轉 動地支承加速柄5 0 6的側邊部5 0 6 a的保持座5 1 6 、檢測加速柄5 0 6的轉動來將其增大的齒輪組5 1 7、 聯繋於齒輪組5 1 7的小齒輪的加速感應器5 1 8、以及 將加速柄5 0 6維持成偏離於轉向車把5 〇 5側的狀態（ 加速截斷狀態）的沒有圖示的彈簧等。如果握住左右其中 一個的加速柄5 0 6的側邊部5 0 6 b抵抗彈簧將側邊部 5 0 6 a當作軸轉動操作的話，則該轉動會經由齒輪組 5 1 7傳達到加速感應器5 1 8 ，將訊號送出到主控制器 Ί。 動力單元600，如前述，會與後輪支承機構300 一起作動來支承後輪2。後述的電池單元7 0 0會將電力 供給到動力單元6 0 0，來驅動後述的電動馬達6 0 1。 在本發明的電池單元7 0 0，如第8圖所示，在地板 (或地板薄板）3的主要區域，在沿著其兩側緣部配置的 框架相互之間，收容著具有與該框架大略相同的高度的電 池盒體7 0 1 ，在該電池盒體7 0 1內排列配置複數的二 次電池7 0 2。在圖示例中，是在前後雨列且在同一平面 上排列了複數的二次電池7 0 2。 地板3，是藉由：位在前輪1的後方且具有與前輪1 的左右相對向間隔略相等的寬度的主地板部5、以及以較 前輪1的左右相對向間隔更狹小且較主地板部5更狹小白勺 寬度朝主地板部5的前方延伸設置的前地板部6所構成。 -20- (17) (17)200302716 地板3的主要區域，是藉由主地板部5所構成，在該部分 配置了電池盒體701。 前述的主框架1 〇 3的中心框架部1 0 5 ，是沿著主 地板部5的左右兩側緣部朝前後延伸。前框架部1 〇 6， 是以較前輪1的左右相對向間隔更小的相對向間隔朝中心 框架部1 0 5的前方延伸設置。在該例中，在構成中心框 架部1 0 5的主框架構件1 〇 7相互之間，配置了電池盒 體 7 0 1。 電池盒體701 ，如第13圖所示，是呈現略薄箱狀 ，是形成爲與主框架構件1 0 7大略相同的高度。該電池 盒體7 0 1 ，是配置在主地板部5的下側且在主框架構件 1 ◦ 7相互之間。在本發明中所使用的乾式的二次電池 7 0 2是使用典型的鋰電池，這種乾式的二次電池，通常 是組合多數的電池再包裝起來。此時，爲了提升大型電池 模組的密度，常常會成爲一部分一部分疊在一起，會有相 當大的體積。在該實施形態，如上述具有左右的一對前輪 1 ，且可以將主地板部5形成爲具有與前輪1的左右相對 向間隔大略相等的寬度的大面積，所以可在同一平面排列 前後兩列的合計八個二次電池7 0 2。可將二次電池 7 〇 2的寬度（直徑）作成與主框架構件1 0 7的高度大 略相同或稍高的程度，可以將電池搭載空間設定得極薄。 在電池盒體7 0 1的底部，如第1 4圖所示，是具備 有對應二次電池7 0 2的外形所形成的複數的凹凸狀的保 持部。作爲該保持部的本實施形態中，形成有複數的半月 -21 - (18) (18)200302716 狀肋部7 0 1 a。如上述需要藉由將該二次電池7 0 2排 列在同一平面上，來固定住二次電池7 0 2讓其不會由於 震動讓電池70 1移動。藉由設置半月狀肋部70 1 a ， 來適當地固定二次電池7 0 2讓其不會相互影響。 電池盒體7 0 1 ，在左右兩側具有凸緣狀的安裝部 7 0 1 b，是將該安裝部7 0 1 b載置於主框架構件 1 0 7上，且藉由小螺釘等被安裝在該主框架構件1 0 7 。在該情況，設置有該安裝用小螺釘的插通孔7 0 1 c。 在電池盒體7 0 1的前部，也就是在前列側的二次電池 7 ◦ 2的前側，是經由保持座7 0 1 d配置了電池控制器 (基板）7 0 3。 電池控制器703，是要控制在二次電池702 (電 池）之間不會產生電容量差或電位差，是設置成垂直於電 池盒體7 0 1的底部。藉由將電池控制器7 0 3垂直地設 置在前懸吊裝置周圍的零件與二次電池7 0 2之間，則可 以有效活用前後方向的空間°而即使是垂直地設置電池控 制器7 0 3 ，在實車中，地板是朝前上方傾斜配置不會向 下方伸出，所以可以有效地確保最低離地高度。 如第1 4圖或第1 5圖所示，在電池盒體7 0 1的上 部，是覆蓋設置了平板狀的外殻7 0 4。外殼7 0 4具有 與電池盒體7 0 1的上部開口整合的形狀，是從其下面部 的周緣部垂設了複數的爪片部7 0 4 a。在電池盒體 7 0 1是對應爪片部7 0 4 a設置了複數的卡合部 701e ，藉由將爪片部7〇4a卡合在卡合部701e -22- (19) (19)200302716 來固定住外殻7 0 4。而在電池盒體7 〇 1與外殻7 0 4 的接合部，安裝有讓水或灰塵不會侵入到電池盒體7 〇 1 內的墊圈。藉由將外殼7 0 4覆設固定在收容二次電池 7 0 2的電池盒體7 0 1，構成了電池或電池包。 如第1 5圖所示，在電池或電池包的上側，也就是在 外殻7 0 4的上側配置了地板薄板3。地板薄板3，是經 由隔板而載置於電池盒體7 0 1的安裝部7 0 1 b上，且 藉由小螺釘等被安裝在該主框架構件1 〇 7。在該情況， 在地板薄板3的周緣部設置有安裝用小螺釘的插通孔3 a ’在安裝部7 0 1 b也在插通孔3 a的對應位置設置有插 通孔7 0 1 f 。 在電池或電池包的下側，也就是在電池盒體7 0 1的 下側，是配置有略平板狀的下保護板7 0 5。下保護板 7 0 5是藉由小螺釘等被安裝在架橋構件1 〇 9及架橋構 件1 1 0 (參照第6圖等）來覆蓋電池盒體7 0 1的下部 。在該情況，在下保護板7 0 5的前緣部及後緣部，是分 別設置有安裝用小螺釘的插通孔7 0 5 a、7 0 5 b (第 1 4 圖）。 在本發明的小型電動車輛，參照上述的各圖，在配設 於地板3的後方的單人座墊的下方前半部，如第3圖等所 示，是配設有：用來對要供給到動力單元6 0 0的電動馬 達6 0 1的電力進行電子控制的主控制器7、以及用來對 電池單元7 0 0的二次電池7 0 2進行充電的充電裝置8 。主控制器7及充電裝置8，是藉由從地板3 —體連續設 -23- (20) (20)200302716 置的車體外殻（沒有圖示）所覆蓋，而沒有露在外面。 在位於主控制器7等的後方的左έ的一對後輪2之間 的空間，是架設有箱狀或籠狀的行李收容裝置9，在該行 李收容裝置9的上部開設有讓行李能夠出入的開口 9 a。 如上述單人座墊，是在座墊柱1 1 4的上方附近位置，可 轉動地被支承在該座墊柱1 1 4的周圍。藉由使單人座墊 適當地轉動，而能夠以單人座墊從上方可開閉地覆蓋位於 其下方的行李收容裝置9的開口 9 a的一部分或全部。 另一方面，在轉向框架1 0 2的上部，在轉向車把 5 0 5的前方附近位置安裝有開關盒（操作面板）1 〇。 該開關盒1 0 ，例如是中介著如第7圖所示的固定在轉向 框架1 0 2的上端的略鍵形的托架1 1所支承著。開關盒 1 0是搭載有各種開關類，例如配設有：前後前進切換旋 鈕、速度設定旋鈕、電池殘餘量顯示器、及充電燈、以及 左右的方向燈開關與喇叭按鍵等的開關。 開關盒1 0 ，是在轉向車把5 0 5的前方附近位置適 當地傾斜配置，讓手可以容易地接觸到運轉操作所需要的 開關類，是作成容易見到顯示燈的顯示內容。乘坐在單人 座墊的搭乘者，可以簡單且確實地操作開關盒1 〇的開關 類。此時，可因應需要適當地操作加速柄5 0 6。 在開關盒1 0的下方附近位置內藏有電線捲軸的電線 捲軸盒1 2是被安裝在轉向框架1 0 2。在電線捲軸是可 自由放出地捲繞著朝向捲繞方向彈拉著的充電用電線，該 充電用電線是被連接在充電裝置8。當在電池單元7 0 0 • 24 - (21) 200302716 的二次電池7 0 2進行充電時，會從電線捲軸盒1 2放出 充電用電線，經由該充電用電線讓充電裝置8與外部電源 連接。 例如是利用保持座5 0 2來把主開關1 3安裝在轉向 框架102的上部。主開關13 ，是配置在讓乘坐在單人 座墊的乘坐者容易操作的位置。在主開關1 3的下方是在 轉向框架1 〇 2架設有箱狀或籠狀的行李收容裝置1 4， 在該行李收容裝置1 4的上部是開設有可讓行李出入的開 □。 上述的情況，各單元是藉由以塑膠或合成樹脂等所形 成的車體外殻所覆蓋，來對車輛全體的外觀性進行設計。 在轉向框架1 0 2的周圍安裝有腿部護罩等，在前輪1及 後輪2的周圍安裝有分別安裝有前擋泥板及後擋泥板也可 以。 在實車上裝備有行駿上所需要的安全或保安零件類。 這種裝配零件包含有：頭燈、方向燈、停車燈、側照後鏡 或喇叭等，且可因應需要裝備其他的零件。 在本發明的小型電動車輛的實際使用，搭乘於單人座 墊的搭乘者，會把持住轉向車把5 〇 5 ，藉由拉動加速柄 5 0 6或因應需要踩踏腳制動器4而可以使車輛行駛。在 該情況，是從收容於地板薄板3的下側的電池單元7 0 0 把電力供給到動力單元6 0 0，藉由讓動力單元6 0 0的 電動馬達6 0 1驅動後輪2，則搭乘者可以使該小型電動 車輛順暢且適當地運轉。 -25- (22) (22)200302716 該電動車輛在法制的形式認定上，是限制在全長 1 2 0 0 m m、全寬度7 0 0 m m以下。以該條件組成四 輪型式的車輛的話，各車輪是被配置在車輛的四個角落。 而爲了要行駛狹小通路而要確保有很大的轉向切角，車輛 框架的設計是作成前輪附近較窄的形態。爲了將地板使用 爲踏腳或置物的用途需要寬廣的平面。因此要盡量避免前 輪的干涉，是構成讓前方上升的傾斜地板。 在本發明的小型電動車輛，特別要配合車輛框架的設 計，藉由有效率地配置電池單元7 0 0來有效地確保地板 面。也就是在地板薄板3的主要區域，在沿著其兩側緣部 配置的框架相互之間，收容著具有與該框架的高度大略相 等的電池盒體7 0 1 ，在該電池盒體7 0 1內排列設置複 數的二次電池7 0 2。將複數的二次電池7 0 2排列在同 —平面上，將電池搭載空間設定爲極薄。藉此既可確保最 低離地高度’且可實現具有寬廣平面的地板，可以確保腳 下的有效空間。藉由將電池單元7 〇 〇配置在車輛最下部 讓其低重心化，可以提升靜態及行駿穩定性。 在電池單元7 〇 〇，電池盒體7 0 1是將安裝部 7 〇 1 b載置於主框架構件1 0 7上，而被安裝在主框架 構件1 〇 7 °是以電池盒體7 0 1或下保護板7 0 5支承 二次電池7 〇 2的重量’所以車體外殻沒有強度構件也可 以，結果可以讓成本減低。藉由將作爲保持部的半月狀肋 部7 〇 1 a設置在電池盒體7 0 1的底部，可適當地固定 二次電池7 0 2 ’而可以提升車輛行駛時的耐振動性。 -26- (23) 200302716 在二次電池7 0 2的前側，是中介著保 ，配置著垂直於電池盒體7 0 1的底部的電 7 0 3 。可以節省空間，並且能夠用前懸吊 件有效地保護電池控制器7 0 3。 而在電池或電池包的上下配置地板薄板 705 ，可以有效地保護電池包。 在本發明的小型電動車輛，如上述藉由 2 〇 〇 ，具有由較電池盒體7 0 1向下側突 所構成的突出構造。藉由將該突出構造保持 7 0 1的前方及下側，構成了具有作爲車輛 重要機能的電池盒體7 0 1的屏障或防護手 效地保護精密的電源裝置。 行李收容裝置9可以使用作爲適當的置 單人座墊轉動，就能夠以單人座墊從上方可 於其下方的開口 9 a的其中一部分或全部。 這種行李收容裝置9 ，可以防止行駛振動讓 使用方便可以提升便利性。 接下來針對本發明的特徵制動踏板8 0 〇 如第1圖〜第3圖或第6圖所示，制動 是被固定架在左右的主框架構件1 0 7的前 後方之間。藉由該制動踏板座8 0 1支承著 8. 0 0。也就是說，制動踏板座8 0 1及制 ，是被配置在配置於主框架1 0 7的中心框 :持座7 0 1 d :池控制器 裝置周圍的零 3及下保護板 前輪支承機構 出的剛性構件 在電池盒體 的電源裝置的 段，而可以有 物箱，藉由使 開閉地覆蓋位 藉由配置組成 行李飛出，且 0來詳細說明 踏板座8 0 1 框架部1 0 6 制動踏板 動踏板8 0〇 架部1 0 5之 -27- (24) 200302716 間的電池單元7 0 0的前方。而 動踏板8 0 0的前方，配置有構 懸吊臂托架2 0 2、懸吊彈簧2 制動踏板座8 0 1，如第1 面80 1 a、連續於水平面80 立設的一對垂直面801b、連 邊朝外側邊延伸設置的一對支承 垂直面8 0 1 b的後輪兩側的側 動纜線保持面8 0 1 d ;且制動 8 0 2相對於主框架構件1 0 7 面8 0 1 c分別載置於左右的主 。在實車中，如第7圖所示，主 斜的狀態，所以會讓支承面8 0 8 0 1 c會被支承爲水平狀。並 8 0 1 b內側，是分別形成有用 踏板8 0 0的踏板臂部8 0 0 b 制動踏板8 0 0，如第1 7 的長板狀的踏板部8 0 0 a、固 面側的左右的一對踏板臂部8 0 部8 0 0 b的下端形成有組裝孔 8 0 0 c的外側面，是設置有用 保持架8 0 6。 如上述在制動踏板8 0 0， 下端的組裝孔8 0 4是分別被組 制動踏板座8 0 1及制 前輪支承機構2 0 0的 6等。 圖所示，是具有：水平 a的兩端朝略垂直方向 於各垂直面801b上 8 0 1 c、以及連續於 朝內側邊延伸設置的制 f 板座8 0 1是經由螺栓 鎖裝著來將左右的支承 架構件1 0 7的上面部 架1 0 3是朝前上方傾 c朝前後傾斜，水平面 ，在左右的垂直面 可自由轉動地支承制動 一對轂部8 0 3。 Φ 所示，是由：左右延伸 於踏板部8 0 0 a的背 b所構成，在各踏板臂 0 4。而在各踏板臂部 連結制動纜線8 0 5的 右的踏板臂部8 0 0 b 在左右的制動踏板座 -28- (25) (25)200302716 8 0 1的轂部8 0 3，是可自由轉動地支承著制動踏板 8 0 0。藉此，在地板的前部，制動踏板8 0 0是朝上方 突出，踏板部8 0 0 a是朝向單人座墊側來配置。而在地 板薄板3的前端，如第1 3圖及第1 4圖所示，形成有左 右的一對切入部3 b，踏板臂部8 0 0 b是位在各切入部 3 b內。 在制動踏板8 0 0的保持架8 0 6連結著制動纜線 8 0 5 ，左右的制動纜線8 0 5 ，是藉由制動踏板座 8 0 1的制動纜線保持面8 0 1 d所保持著，且沿著主框 架構件1 0 7的下面部分別被導引到後輪2側（參照第3 圖、第6圖）。 接下來針對上述的制動踏板8 0 0與動力單元6 0 0 的關係來加以說明。如第1 8圖所示，在動力單元6 0 0 的殻體6 0 2是經由複數的螺栓6 0 3固定著電動馬達 6 〇 1 。在殻體6 0 2的前端，是設置有樞支於主框架構 件1 0 7的後端的托架3 〇 2的連結部6 0 4。在殼體 6 0 2的後端，是設置有連結於減震器3 0 3的下端的連 結部6 0 5。 在殼體6 0 2內，是可旋轉地支承著與電動馬達 6 0 1的輸出軸6 〇 1 3平行配置的軸部6 6 ，輸出軸 6 〇 1 a前端的小齒輪6 〇 7會與軸部6 0 6的外周面的 齒輪6 0 8嚙合。在軸部6 0 6的外周面設置有可向軸方 向滑動的滑動齒輪6 〇 9，是作成藉由彈簧6 1 〇而被朝 向齒輪6 〇 8側按壓而與齒輪6 0 8及軸部6 0 6 —起旋 -29 - (26) (26)200302716 轉。 在殼體6 0 2內，是可旋轉地支承著與軸部6 0 6平 行配置的軸部6 1 1 ’滑動齒輪6 0 9是與軸部6 1 1的 外周面的齒輪6 1 2嚙合。並且，與軸部6 1 1平行配置 的後輪2的車軸3 0 1是可旋轉地被支承著，是從殼體 6 02突出。軸部6 1 1的外周面的齒輪6 1 3是與車軸 3 0 1的外周面的齒輪6 1 4嚙合。 在這種動力單元6 〇 〇，電動馬達6 0 1的輸出會從 輸出軸6 0 1 a經由齒輪組被減速而傳達到車軸3 0 1 ， 來驅動後輪2。而第1 8圖所示的構造是一個例子，雖然 是三階段減速，而並不限定於此。 在殻體6 0 2內’是隔著電動馬達6 0 1的輸出軸 6 0 1 a配置有與軸部6 0 6平行的離合器軸部6 1 5。 離合器軸部6 1 5的其中一端是從殼體6 0 2突出，在該 突出部份設置有沒有圖示的離合器柄。藉由該離合器柄的 作動，會經由設置於離合器軸6 1 5的螺旋型臂6 1 6而 讓換檔撥叉6 1 7換檔。當換檔撥叉6 1 7換檔時，與換 檔撥叉6 1 7聯繋的滑動齒輪6 0 9會抵抗彈簧6 1 0而 滑動，會從齒輪6 0 8分開，隔斷電動馬達6 0 1與後輪 2的聯繫。於是，在用手推車輛時，可以讓電動馬達 6 〇 1不會與後輪2的旋轉連動，就可以減少推車時的負 荷。 在車軸3 〇 1是連結著後輪2 ，在後輪2的內輪部 9 0 1內，是內嵌有與嚙合於電動馬達6 0 1的輸出軸 -30- (27)200302716 601 a的後輪轂902 。而在與車軸3 0 1的同 蓋內輪部9 0 1的動力單 是安裝有：一對制動蹄片 鉸鏈銷栓9 0 7等。 在這種制動機構，如 8 0 0時，制動纜線8 0 來操作制動凸輪柄9 0 6 9 0 6的下端的凸輪9 0 會抵抗彈簧9 0 9而將鉸 ，制動蹄片9 0 5會壓接 摩擦力來制動後輪2。 雖然在第18圖是針 6 0 0及制動機構來顯示 同樣的動力單元6 0 0及 如以上的說明在本發 達6 0 1不是組裝了電磁 分別設置制動機構，並且 8 0 0配設在地板的前部 ，可以依據搭乘者的想法 在地板的前方是配置 隔更小的相對向間隔且架 動踏板座8 0 1及制動踏 的空間，可以有效利用空 一體或所焊接著的制動鼓9 0 3 軸上設置有制動護板9 〇 4來覆 元6 0 0側。制動護板9 0 4， 905、制動凸輪柄9〇6、及 第1 9圖所不，當踩下制動踏板 5的內纜線8 0 5 a會被拉動， 。於是，設置於制動凸輪柄 8會旋轉，一對制動蹄片9 0 5 鏈銷栓9 0 7擴張到中心。結果 到制動鼓9 0 3的內面，藉由其 對左邊的後輪2的動力單元 ，而針對右邊的後輪2也設置有 制動機構。 明的小型電動車輛中，在電動馬 馬達，是針對左右的一對後輪2 將用來操作制動機構的制動踏板 ，所以用腳操作不會有不協調感 來進行制動操作。 有具有較前輪1的左右相對向間 在前框架部1 0 6後方之間的制 板8 0 0，所以不會妨礙到地板 間而可以達到小型化。 -31 - (28) (28)200302716 藉由踩踏朝制動踏板8 0 0的左右延伸的長方形的踏 板部8 0 0 a ，則左右的後輪2的制動機構會同時作用， 所以不管是左腳或右腳都可以操作制動踏板8 0 0。 制動踏板座8 0 1及制動踏板8 0 0，是配置在電池 單元7 0 0的前方，且在構成前輪支承機構2 0 0的懸吊 臂托架2 0 2、懸吊彈簧2 0 6等的後方，所以可以防護 制動踏板座8 0 1及制動踏板8 0 0。 如上述作成藉由踩踏一片板狀的踏板部8 0 0 a，則 左右的後輪2的制動機構會同時作用的構造，如第2 0圖 所示，由相鄰配置的左右的一對制動踏板8 0 0 L、 800R構成也可以。 在這種情況，左右的制動踏板8 0 0 L、8 0 0 R， 是由：踏板部8 00La、800Ra、以及固定在踏板 部8 0 0 L a、8 0 0 R a的背面側的踏板臂部 80〇Lb、Rb所構成。各踏板臂部800Lb、Rb 是經由制動纜線8 0 5分別聯繫於左右的後輪2的制動機 構。 在這種例子中，可以獨立操作左右的制動踏板 8 〇 0L、8 0 0R，只要踩下其中一邊的話，就可原地 轉彎。或者，經由連結構件來連結左右的制動踏板 8 〇 〇 L、8 0 〇 R的話，如上述的實施型態，只要用左 右其中一腳踩下制動踏板8 0 0 L、8 0 0 R，則可同時 將左右的後輪2煞住。 以上說明用實施型態來說明本發明，而本發明並不限 -32- (29) (29)200302716 定於該實施型態，在本發明的範圍內可進行變更。 例如電池盒體7 0 1的二次電池7 0 2的排列方法等 ，也可用圖示例子之外的排列方法。 〔發明效果〕 藉由以上說明的本發明，配合在這種小型電動車輛的 車輛框架的設計，藉由有效率地配置電池單元來有效地確 保地板面。也就是說將複數的二次電池排列在同一平面上 ，將電池搭載空間設定爲非常薄。藉此既可確保最低的離 地高度，又可實現具有寬廣平面的地板，可以確保腳下的 有效空間。而藉由將電池單元配置在車輛的最下部達成低 重心化，可以提昇靜態及行駿穩定性。 特別是供於高齡者或腳不方便的人利用的小型電動車 輛，是分別針對左右的一對後輪設置制動機構，並且將用 來操作制動機構的制動踏板配設在地板的前部，所以用腳 操作不會有不協調感，可以依據搭乘者的想法來進行制動 操作，可以確保很高的安全性。 【圖式簡單說明】 第1圖是顯示本發明的小型電動車輛的實施型態的基 本構造的前方立體圖。 第2圖是顯示本發明的小型電動車輛的實施型態的基 本構造的後方立體圖。 第3圖是顯示本發明的小型電動車輛的實施型態的基 -33- (30) (30)200302716 本構造的側面圖。 第4圖是顯示本發明的小型電動車輛的實施型態的基 本構造的平面圖。 第5圖是顯示本發明的小型電動車輛的實施型態的基 本構造的正面圖。 第6圖是顯示本發明的小型電動車輛的實施型態的框 架單元及電池單元周圍的立體圖。 第7圖是顯示本發明的小型電動車輛的實施型態的框 架單元的周圍的側面圖。 第8圖是顯示本發明的小型電動車輛的實施型態的框 架單元的周圍的平面圖。 第9圖是顯示本發明的小型電動車輛的實施型態的前 輪支承機構的周圍的立體圖。 第1 0圖是顯示本發明的小型電動車輛的實施型態的 單人座墊的轉動機構的周圍的立體圖。 第1 1圖是顯示本發明的小型電動車輛的實施型態的 轉向車把的周圍的立體圖。 第1 2圖是顯示本發明的小型電動車輛的實施型態的 轉向車把的周圍的側面圖。 第1 3圖是顯示本發明的小型電動車輛的實施型態的 電池單元的立體圖。 第1 4圖是顯示本發明的小型電動車輛的實施型態的 電池單元的分解立體圖。 第1 5圖是顯示本發明的小型電動車輛的實施型態的 -34- (31) (31)200302716 電池單元的側面圖。 第1 6圖是顯示本發明的小型電動車輛的實施型態的 制動踏板座的顯示圖。 第1 7圖是顯示本發明的小型電動車輛的實施型態的 制動踏板的顯示圖。 第1 8圖是顯示本發明的小型電動車輛的實施型態的 動力單元及制動機構的周圍的剖面圖。 第1 9圖是顯示本發明的小型電動車輛的實施型態的 制動機構的周圍的顯示圖。 第2 0圖是顯示本發明的小型電動車輛的實施型態的 制動踏板的變形例的立體圖。 【圖號說明】 1 :前輪 2 :後輪 3 :地板薄板 _ 7 :主控制器 8 :充電裝置 9 :行李收容裝置 1 0 :開關盒 1 2 :電線捲軸盒 1 3 :主開關 1 〇 〇 :框架單元 1 0 1 :車體框架 35- (32) (32)200302716 1 0 2 :轉向框架 1 0 3 :主框架 、 1 0 4 :後框架 . 1 0 5 :中心框架部 _ 1 0 6 :前框架部 1 0 7 :主框架構件 108、109、110:架橋構件 1 1 4 :座墊柱 · 2 0 0 :前輪支承機構 2 0 1 :基座構件 2 0 2 :懸吊臂托架 2 0 3 :懸吊臂 2 0 4 :關節部 2 0 5 :車軸 2 0 6 :懸吊彈簧 2 0 7 :托架 φ 3 0 0 :後輪支承機構 3 0 1 :車軸 3 0 2 :托架 3 0 3 :減震器 、 4 0 0 :座墊單元 、 4 0 1 :座墊緩衝框架 4 0 2 :靠背框架 4 0 3 :座墊緩衝器 -36- (33) (33)200302716 4 0 4 :座墊靠背 4 0 5 :扶手架 - 5〇0 :操舵機構 _ 5 0 1 :轉向軸 5 0 5 :轉向車把 雕 5 0 6 :加速柄 5 0 8 :副軸 5 0 9 ··橫拉桿臂 Φ 5 1〇：關節臂 5 1 1 :橫拉桿 6 〇 〇 :動力單元 6 0 1 :電動馬達 7 0 0 :電池單元 7 0 1 :電池盒體 7 0 2 :二次電池 7 0 3 :電池控制器 φ 7 0 4 :外殼 7 0 5 :下保護板 8 0 0 :制動踏板 8 0 1 :制動踏板座 ’ 8 0 2 :螺栓 - 8 0 3 :轂部 8 0 4 :組裝孔 8 0 5 :制動纜線 -37-200302716 (1) 发明. Description of the invention [Technical field to which the invention belongs] The present invention relates to a small electric vehicle with ® wheels, which is used by elderly people or people with inconvenient feet. [Previous technology] This small electric vehicle is called, for example, a senior car (Seniorcar) (R), etc., and it is not good at moving for the elderly. Often high price tag. In the basic structure of a small vehicle, for example, a seat cushion for the rider is provided at the rear of the vehicle body, a floor for carrying the driver's feet is provided in front of the vehicle, and a steering shaft for manipulating the direction of the front wheels is erected in front of the vehicle. . A handlebar is mounted on the upper end of the steering shaft, and the rider will ride on the seat cushion to operate the handlebar. Generally, although a battery is mounted to supply electric power to an electric motor that drives the rear wheels, conventionally, when a lead storage battery was used, the battery was generally placed under the seat cushion in the relationship of the weight distribution of the entire vehicle body. In such electric vehicles, the power source is all dependent on the battery on which the battery is mounted, and the battery is necessarily large. Therefore, the space or weight of the battery is an equivalent proportion of the vehicle. In the small electric vehicle configured as described above, an accelerator lever is provided near the handlebar. When the accelerator lever is held, the rear wheels are driven by the motor. When the accelerator lever is removed, an electromagnetic brake incorporated in the motor is applied to brake. Rear wheel-5- (2) (2) 200302716 [Summary of the Invention] [Problems to be Solved by the Invention] However, when the conventional electric vehicle described above is mounted with a battery under a seat cushion, a large volume is covered with a casing Battery, the result will give people a clumsy impression of the appearance of the vehicle. Although I want to use the space under the seat cushion to ensure space for putting things or stepping on my feet, because the battery is configured as described above, the space under the seat cushion cannot be used. In some cases, the battery is placed on the floor to ensure the space under the seat cushion. In this case, it is difficult to arrange the battery to the same height as the floor. The conventional small electric vehicle has a structure in which a battery brake incorporated in a motor is activated by releasing an accelerator lever. Although such a brake structure has an advantage that the vehicle can be stopped exactly when the vehicle is to be parked, it is not a structure in which the brake is actively operated by the rider itself, which causes a sense of incongruity. As mentioned above, although there are some types of small electric vehicles equipped with an electromagnetic brake, a brake lever is provided near the handlebar, but most of them are used when the vehicle is manually pushed by a clutch mechanism to switch the connection between the motor and the rear wheel. Rarely. Although it can also be used as an auxiliary function of the electromagnetic brake, the operation of the brake lever other than the electromagnetic brake is very effective. However, there may be a gap between the amount of operation of the brake lever and the amount of braking desired by the rider. In this case, an object thereof is to provide a compact electric vehicle having a battery mounting structure or the like capable of efficiently disposing a battery as a power source of a vehicle. (6) (3) (3) 200302716 It is also an object of the present invention to provide a small electric vehicle that can be braked in accordance with the rider's own thinking without any discomfort when operated with feet. [Means for Solving the Problems] The small electric vehicle of the present invention has a floor laid on the frame below a single seat cushion supported on a frame, and can be operated as a handlebar. A pair of left and right front wheels that are swingable to the left and right and are provided in front of the floor, and a pair of left and right rear wheels that are drive wheels driven by a power unit and are provided behind the single seat cushion. Xingjun is a small electric vehicle provided with a secondary battery for supplying power to the power unit, and is characterized in that the main area of the floor is interposed between the frames arranged along the edges of both sides of the floor, and is housed. A battery case having a height approximately the same as that of the frame is provided, and a battery cell having a plurality of the above-mentioned secondary batteries arranged in an array is provided in the battery case. In the small electric vehicle according to the present invention, the floor is formed by a main floor portion located further behind the front wheel and having a width approximately equal to the left-to-right facing distance of the front wheel, and a spaced apart from the left-to-right facing front wheel. The front floor portion, which is narrower and narrower than the main floor portion, is provided in front of the main floor portion. The battery case is disposed in a main area of the floor formed by the main floor portion. . In the small electric vehicle according to the present invention, the frame is formed by a central frame portion extending forward and backward along the left and right side edges of the main floor portion, and the left and right sides of the front wheel are -7- (4) (4) 200302716. The front frame portion which extends to the front of the center frame portion and the front frame portion which has a smaller relative distance is provided to support the single seat cushion, the power unit, and the rear wheel. The rear frame portion is formed by disposing the battery case between the main frame members constituting the center frame portion. In the small-sized electric vehicle of the present invention, a protrusion formed by a rigid member extending forward from left to right across the left and right of the front wheels and protruding to a lower side of the battery case is provided in front of the battery case. Structure 'This protruding structure is protrudingly disposed below the front frame portion. In the small electric vehicle according to the present invention, the protruding structure is constituted by a front wheel support mechanism that supports the front wheels rotatably and swingably, and the front wheel support mechanism includes support held below the front frame portion. The suspension arm bracket is fixed to the support portion, and is supported by the suspension arm bracket so as to be freely swingable in the vertical direction. The outer end portion rotatably supports the suspension arm of the front wheel. In the small electric vehicle of the present invention, the cylindrical secondary batteries are arranged on the same plane to be housed in the battery case. The bottom of the battery case is provided with a shape corresponding to the secondary battery. A plurality of uneven-shaped holding portions. The small electric vehicle according to the present invention is provided with a main controller for electronically controlling the electric power to be supplied to the power unit, 'under the front half of the single seat cushion arranged behind the floor'. 'And a charging device for charging the secondary battery of the above-mentioned battery unit' These structures are covered by a car body shell which is continuously provided integrally from the above-mentioned floor, and The space between a pair of left and right rear wheels located behind the main controller and the charging device is a box-shaped or cage-shaped luggage storage device. In the small-sized electric vehicle of the present invention, an opening is provided in the upper portion of the luggage storage device to allow luggage and the like to pass in and out, and the single seat cushion is rotatably supported on a seat cushion post standing from the frame Is to cover part or all of the opening of the luggage storage device with the single seat cushion that can be opened and closed from above. In another aspect of the present invention, a small electric vehicle is provided with a single seat cushion supported on a frame, a floor formed on the frame below and below the single seat cushion, and is operable by a handlebar operation. A pair of steering wheels swinging to the left and right and provided on the front of the floor, a pair of left and right rear wheels provided as drive wheels driven by a power unit and provided below the rear of the single seat cushion, and The small electric vehicle for supplying electric power to the secondary battery of the power unit is characterized in that a brake mechanism is provided for each of the left and right rear wheels, and a brake pedal for operating the brake mechanism is disposed in the above. The front of the floor. In the small electric vehicle according to the present invention, the frame includes a center frame portion extending forward and backward on the left and right sides of the vehicle body, and a front frame extending from the center frame portion and extending in front of the center frame portion. The left and right main frames of the spaced-apart front frame portion and the rear frame extending rearwardly from the center frame portion and supporting the single seat cushion, the power unit, and the rear wheel are composed of The above main frame constitutes the above floor. -9- (6) (6) 200302716 In the small electric vehicle of the present invention, a brake pedal seat fixed between the left and right main frames is supported, and the brake pedal is supported by the brake pedal seat. In the small electric vehicle of the present invention, a secondary battery for supplying power to the power unit is mounted between the center frame portions of the left and right main frames, and the brake pedal seat is disposed in front of the secondary battery. 〇 In the small electric vehicle of the present invention, at least a part of the front wheel support mechanism is arranged below the front frame portion of the left and right main frames in front of the brake pedal seat. In the small electric vehicle according to the present invention, the brake pedal is composed of a substantially rectangular pedal portion extending leftward and rightward, and a pair of left and right pedal arm portions fixed to a rear side of the pedal portion, and the left pedal The arm portion is a braking mechanism connected to the left rear wheel, and the right pedal arm portion is a braking mechanism connected to the right rear wheel. In the small electric vehicle of the present invention, the brake pedal is composed of a pair of left and right brake pedals arranged adjacently, and the left brake pedal is composed of a pedal portion and a rear side fixed to the pedal portion. The left arm of the rear wheel brake mechanism is composed of a pedal arm portion, and the right brake pedal is composed of a pedal portion and a rear side of the pedal portion fixed to the right rear wheel brake mechanism. Constructed by pedal arm. According to the present invention, in accordance with the design of a vehicle frame of such a small electric vehicle, the battery unit is efficiently arranged to effectively ensure the floor surface. That is to say, in the main area of the floor, between the frames arranged along the edges of both sides of the frame -10- (7) 200302716, each frame has a height substantially equal to that of the frame, and a plurality of cells are arranged in the battery case. The secondary batteries are arranged on the same plane, and the batteries are mounted thin. This not only ensures the lowest height from the ground, but also the floor, which ensures effective space under the feet. The lower center of gravity of the vehicle is used for stability. With other forms of the present invention, the braking mechanism is provided separately, and because the operation panel is arranged on the front of the floor, the operation with the foot will not perform the braking operation according to the rider's own idea. Embodiment] Hereinafter, a small-scale electricity supply mode of the present invention will be described with reference to the drawings. Figures 1 to 5 show the overall structure of this embodiment. This embodiment is an example of a four-wheeled small electric vehicle, and a pair of front wheels 1 and rear wheels 2 on the left and right sides of a frame unit 100 including a body frame. The front wheel 1 is borrowed from 200, and the rear wheel 2 is supported by the rear wheel support mechanism 3. Near the rear of the frame unit 100, there is a seat box unit 400 for a single seat cushion, which is used by the rider, and the battery box is slightly the same. The plural spaces are set to realize a wide range of flat, compact electric vehicles that have a wide range of flat brakes by lifting the battery unit statically and a pair of rear-wheel-moving mechanisms on the left and right. In these figures, the rear part is respectively supported by the front wheel support mechanism 0 0, and each of them is supported. On the front of -11-(8) (8) 200302716 of the single seat cushion, there is a floor sheet 3 which is laid on the body frame and constitutes a low-type floor for carrying the feet of the rider. A brake pedal 8 0 0 is arranged near the front of the floor sheet 3. In the front of the frame unit 100, there are steering wheels that can swing left and right by the handlebar operation. The steering mechanism 5 0 for steering the direction of the front wheel 1. In this example, the rear wheel 2 constitutes a driving wheel, and is driven by a power unit 600 including an electric motor provided at the rear portion below the single seat cushion. In the present invention, a battery unit 7 0 0 provided with a secondary battery for supplying electric power to the power unit 6 0 0 is arranged below the floor sheet 3. The left and right rear wheels 2 are each provided with a brake mechanism operated by a brake pedal 800. The frame unit 100, referring to FIGS. 6 to 8, is composed of a vehicle body frame 101 that constitutes a chassis portion, and a steering arm 102 that supports a steering handlebar and the like. Contains: main frame 1 03 and rear frame 104. The main frame 103 is composed of a center frame portion 105 and a front frame portion 106 extending to the front of the center frame portion 105. The main frame 10 3 includes a pair of main frame members 1 107 arranged in the front-rear direction on the left and right sides, and the main frame member 1 07 is near the boundary of the center frame portion 105 and the front frame portion 106. The shape is narrower as shown in Figure 8. Although the main frame member 107 is preferably formed of a square tube material 'and is not limited thereto, it may be formed of a c-groove type material or a circular tube material. In either case, the main frame member 107 has a height (thickness in the vertical direction). Each main frame member 1 07 -12- 200302716 〇) is attached with a gripping handle 111 ° protruding outward, for example, made of a round pipe material. In this example, the main frame member 1 7 is at the front end. There are three bridge members 1 0, 0, 9 and 1 1 0 near the junction of the center frame portion 105 and the front frame portion 106 and the rear end horizontal frame, thereby ensuring the main frame 1 0 3 high rigidity. As shown in Fig. 7, the bridge members 108 and 10 'are formed by being bent downward in a protruding manner, and the base members of the front wheel support mechanism described later are arranged on the bridge members 108 and 109. On a real vehicle, as shown in Fig. 7, the main frame 103 is inclined in a forward and moderate direction, and at this time, the base member of the front wheel support member is supported substantially horizontally. As shown in FIG. 9, the steering frame 102 is integrally supported by four pipe materials 102 2 a to d inside the front end portion of the front frame portion 106. Although the steering frame 1 〇2 stands upright from the front frame portion 106 (the main frame member 107), the main frame 1 03 is inclined forward and upward as described above, so the steering frame 1 〇2 is moderately oriented toward The single seat cushion is tilted sideways. The steering frame 102 is formed from a suitable square tube material. The rear frame 104 is arranged obliquely from the rear end portion of each main frame member 107 toward the upper back, and is coupled to each other by the gripping handles 1 12 at the rear end portions. In the front-rear direction of the large frame of the rear frame 104, a large arch-shaped or trapezoidal bridge member 1 1 3 is horizontally framed, and an upper portion of the bridge member 1 1 3 is installed to support the cushion unit 4 0 Cushion pillar 1 1 4 ° rear frame 10 4 or bridge member 1 1 3, although it is best to use (10) (10) 200302716 to form a square tube material, but it is not limited to this, but it can also use c groove type Material or tube material. At the rear end of the rear frame 104, there is also a bridge member 1 1 5 which is formed by bending and protruding downward. The front wheel support mechanism 2 0 supports the front wheel 1 in a freely rotatable and swingable manner, and includes a base member 2 0 1 which is held below the front frame portion 106 as a support portion, and is fixed to the base member. The suspension arm bracket 2 0 2 on 2 0 1 is supported by the suspension arm bracket 2 0 2 so as to be able to swing freely in the vertical direction. The suspension arm extends from the center portion of the vehicle in the left-right direction to the outside and extends from the center. The outer end portion rotatably supports the suspension arm 2 0 3 of the front wheel 1. The front wheel support mechanism 200 is mainly composed of a rigid member that extends from left to right of the battery case, which will be described later, between the opposite sides of the left and right front wheels 1 and projects to the lower side of the battery case. The protruding structure of the composition. In other words, as shown in FIG. 1 to FIG. 5 or FIG. 7, the protruding structure is a base member 2 0 1 and a suspension arm bracket composed of a protrusion protruding below the front frame portion 10 6. The frame 202, the suspension arm 203, and the like hold the protruding structure on the front and lower sides of the battery case, and constitute a barrier or a battery case having important functions as a power source device of the vehicle. The protection means can effectively protect the precise power supply device. Even with such a protruding structure protruding below the front frame portion 106, in a real vehicle, the floor 3 is disposed obliquely forward and upward (refer to FIG. 7), so it does not protrude downward, and can be effectively used. Ensure minimum ground clearance. In the front wheel support mechanism 2000, referring to FIG. 9, the base frame 2-1 on the main frame -14- (11) (11) 200302716 1 0 3 is arranged on the bridge member 1 ο 8, 10 9 It is provided with two front and rear suspension arm brackets 2 0 2 for the left and right suspension arms 2 0 3. Each suspension arm 230 is bifurcated forward and backward, and the two base ends of the divergence arm are supported by two suspension arm brackets 2 0 2 on the front and rear. At the front end of the suspension arm 203, a gate-shaped joint portion 204 is rotatably supported. An axle portion 2 05 is horizontally extended at the joint portion 204, and the front portion 1 is rotatably supported by the axle portion 250. A bracket 207 for fixing the suspension spring 206 is fixed to the outer portion of the front frame portion 106, and a suspension is mounted between the bracket 207 and the suspension arm 203 (the front side branched into a double-stranded shape). Spring 2 0 6. The rear wheel support mechanism 3 00 will work with the power unit 6 0 to support the rear wheel 2. In this case, the power unit 600 includes an electric motor and a reduction gear set connected to its output shaft, and the support shaft of the final gear constitutes the axle 301 of the rear wheel 2. The front end of the power unit 600 is pivotally supported by a bracket 3 02 (refer to FIGS. 1 to 3) fixed to the rear end of the main frame member 107. The rear end side of the power unit 600 is connected to the lower end of the shock absorber 303. The upper end of the shock absorber 303 is pivotally supported by a bracket 304 fixed to the rear end of the rear frame 104. The shock absorber 3 0 3 may be a structure using a compression coil spring or a hydraulic pressure. In the seat cushion unit 400, a cushion cushion frame 401 formed by a square tube material and the seat cushion back frame 4 02 are combined into a slightly l-shaped and integrated, and the cushion cushion frame 40 is formed. 1 is held slightly horizontally and is supported on the seat -15- (12) (12) 200302716 bolster 1 1 4. In this case, the seat cushion unit 400 is supported so as to be able to rotate left and right and can be selectively fixed to a plurality of angular positions on the way of rotation. The seat cushion buffer frame 4 is mounted with a seat cushion composed of an elastic body. The bumper 4 03 is a seat back frame 4 0 4 which is composed of an elastic body. The armrest frame 405 is rotatably supported at an appropriate height position of the seat back frame 402. As shown in FIG. 3 'A passenger who rides on the seat cushion unit 4 0 0 supported on the seat cushion pillar 1 1 4 can put his feet on the floor sheet 3, and can step on the front part of the floor sheet 3 at this time. Nearby foot brake. Next, a configuration example of the rotation support mechanism of a single seat cushion will be described. In Fig. 10 ', the base bracket 406 is coupled to the lower side of the cushion cushion frame 401. The base bracket 406 has a cushion tube body 407 hanging down. The socket 408 is fitted in the seat post 114, and the seat tube 407 is rotatably embedded in the socket 408. This allows the cushion cushion frame 401, that is, a single seat cushion, to be rotated left and right. The pipe seat 408 can also be attached to and detached from the seat post 1 1 4. A pedestal bracket 4 06 is fixedly mounted with a pedestal 4 10 having a bearing 409 at the front thereof. The rotating shaft 4 1 1 is inserted into the bearing 4 0 9. The rotating shaft 4 1 1 is extended to the outside and is formed with a handle 4 1 2 by appropriate bending as shown in the figure. On the rotating shaft 4 1 1, a claw piece portion 4 1 4 protruding downward from an opening 4 1 3 opened in the base bracket 4 0 6 is fixedly attached. The claw piece portion 4 1 4 can be rotated by the operation of the handle portion 4 1 2. The claw piece portion 4 1 4 ′ has a hole portion -16- (13) (13) 200302716 4 1 4 a which can be engaged with a tooth portion of a baffle described later. On the other hand, a baffle plate 4 · 15 is fixedly mounted on the upper end of the stem 408, and a plurality of tooth portions 4 1 6 are provided on the outer peripheral portion of the baffle plate 4 1 5 at appropriate angular intervals. Both sides of each of the tooth portions 4 1 6 are cut out as portions to be avoided, whereby the teeth portions 4 1 4 can be engaged with each other. By inserting the seat tube body 4 7 into the seat tube 0 8, a single seat cushion is supported on the seat cushion column 1 1 4. At this time, by engaging the claw piece portion 4 1 4 with the desired tooth portion 4 1 6 by the operation of the handle portion 4 1 2, a single person can be selectively fixed at a desired angular position. The seat cushion 〇 is located at the steering mechanism 5 0 0, referring to FIG. 5 or FIG. 9, and a plurality of holding seats 5 0 2 are interposed on the inner side of the steering frame 10 2 to freely rotate and hold the steering shaft 5 0 1 . The steering shaft 5 0 1 is bent and inclined to the single seat cushion side via a universal joint 5 0 3 in the middle of the long axis direction, and the steering wheel is supported by a bracket or a chassis 5 0 4 at an upper end portion thereof. Put 5 0 5. The steering handlebar 505 is a deformed U-shape showing a notch in the front part. The steering handlebar 505 can be rotated while holding the steering handlebar 505 in an appropriate position. The acceleration handle 506 mounted on the chassis 504 is operated. A bracket 507 is attached to the inside of the front end portion of each main frame member 1 07 of the front frame portion 106. The bracket 507 is provided with a hub portion for rotatably supporting the lower end of the steering shaft 51. . On the rear side of the steering shaft 501 on the bracket 507 is a countershaft 508 having a gear that meshes with a gear provided at the lower end of the steering shaft 501. A tie rod arm 5 0 9 is fixed to the lay shaft 5 0 8, and when the steering shaft 501 is rotated to the right or left, the tie rod arm 5 0 9 is directed to -17- (14 through the lay shaft 5 0 8 ) (14) 200302716 Turn right or left. At each front wheel 1, an articulated arm 5 1 0 and a tie rod arm 5 0 9 fixedly attached to the joint portion 204 are connected to each other via a tie rod 5 1 1. By turning the steering handlebar 505 to the left and right, the front wheels are steered to the right or left via: the steering shaft 501, the countershaft 508, the tie rod arm 509, and the tie rod 5 1 1. By setting the auxiliary shaft 5 0 8, the front wheel 1 can be steered in the same direction as the steering handle 5 5 turning direction. At this time, by appropriately selecting the gear ratio of the gear on the steering shaft 51 1 side and the gear on the counter shaft 508 side, the steering angle and the steering force can be appropriately set. Figures 11 and 12 here show the area around the steering handlebar. The steering handlebar 5 5 has a linear rod portion 5 0 5 S and side rod portions 5 0 5 L and 5 0 5 R extending in an arc shape from the left and right ends of the linear rod portion 5 0 5 S, as described above. Its front part is a deformed u-shape showing a notch. A steering handlebar support portion 5 1 2 is provided on the upper end side surface of the steering shaft 5 0 1 and extends toward the rear and bends upward from the middle. A splint member 5 1 3 is fixed to the front end of the steering handlebar support portion 5 1 2. The splint member 5 1 3 has a hole portion penetrating right and left, and is a member divided into upper and lower parts. The splint member 5 1 3 a on the lower side is a splint welded to the upper end of the steering handle support portion 5 1 2. The component 5 1 3 b is a splint component 5 1 3 a which is locked to the lower side via a bolt 5 1 4. The center of the linear lever portion 5 05 S of the steering handlebar 5 0 5 is supported by the sandwiching of the splint member 5 1 3. Therefore, by loosening the bolt 5 1 4 and turning the handlebar 5 0 5, the linear rod portion 5 05 S can be turned as -18-(15) (15) 200302716 (refer to arrow r in the figure). Lie the steering handlebar 5 5 down or stand it up to the desired angle. As described above, in a state of being biased from the axis of the steering shaft 501 to the position of the single seat cushion side, the supported steering handlebar 505 is lying down, that is, as shown in FIG. 12 The state in which the steering handlebar is perpendicular to the steering shaft 501 is such that the center of the steering handlebar 505 is approximately the same as the axis of the steering shaft 501. The brackets 505L and 505R on the left and right side of the steering handlebar 505 are fixed to the inside by a bracket 5 1 5 which is slightly lowered inward by welding or the like. These brackets 5 1 5 support both sides of the chassis portion 504. The fixed chassis portion 504 is located deep inside the steering handlebar 505. The left and right sides of the chassis portion 504 are provided with acceleration levers 506. The acceleration lever 5 0 6 is formed in a slightly gate shape, and when the opening side is directed downward, the side portion 5 0 6 a of each of the chassis portions 5 4 is rotatably supported by the side portion of the chassis portion 5 4. The other side portion 5 0 6 b is arranged below the side lever portions 5 0 5 L and 5 0 5 R of the steering handlebar 5 5 which is the operating handle portion, and is arranged slightly parallel to the side edge. The rods are 5 0 L and 50 5 R. Accordingly, the acceleration lever 506 can be operated while holding the side lever portions 505L, 505R of the steering handlebar 505. And if the other side part 5 0 6 b of the acceleration handle 5 0 6 is matched with the side lever parts 5 0 5 L and 5 0 5 R of the steering handlebar 5 0 5 to form a slightly arc shape, When holding the upper or lower part of the side levers 5 0 5 L, 5 5R of the steering handlebar 5 0 5, it is also easy to turn the operation -19- (16) (16) 200302716 as the acceleration handle 5 0 6. On both sides of the chassis portion 5 0 4 are provided: a holder 5 1 6 that supports the side portion 5 0 6 a of the acceleration lever 5 0 6 freely and detects the rotation of the acceleration lever 5 0 6 To increase its gear set 5 1 7, the acceleration sensor 5 1 8 connected to the pinion of the gear set 5 1 7, and to maintain the acceleration lever 5 0 6 away from the steering handle 5 05 side A spring (not shown) in the state (accelerated cutoff state). If the side part 5 0 6 b of one of the left and right acceleration handles 5 0 6 is held against the spring and the side part 5 0 a is rotated as an axis, the rotation will be transmitted to the acceleration through the gear set 5 1 7 The sensor 5 1 8 sends the signal to the main controller Ί. As described above, the power unit 600 operates together with the rear wheel support mechanism 300 to support the rear wheel 2. The battery unit 700, which will be described later, supplies electric power to the power unit 600, and drives an electric motor 601, which will be described later. In the battery unit 7 0 of the present invention, as shown in FIG. 8, in the main area of the floor (or floor sheet) 3, frames arranged along the edges of both sides of the main unit are housed with the frame. The battery case 7 0 1 having substantially the same height, and a plurality of secondary batteries 7 0 2 are arranged inside the battery case 7 0 1. In the example shown in the figure, a plurality of secondary batteries 7 0 2 are arranged on the same plane in front of and behind the rain column. The floor 3 is formed by a main floor portion 5 located behind the front wheel 1 and having a width approximately equal to the left-to-right relative interval of the front wheel 1 and a narrower and more spaced left-right relative to the front wheel 1 The front floor portion 6 is formed with a narrower width extending in front of the main floor portion 5. -20- (17) (17) 200302716 The main area of the floor 3 is constituted by the main floor portion 5, and a battery case 701 is arranged in this portion. The center frame portion 105 of the main frame 103 described above extends forward and backward along the left and right side edge portions of the main floor portion 5. The front frame portion 106 is extended toward the front of the center frame portion 105 with a relatively small interval between the left and right relative intervals of the front wheel 1. In this example, a battery case 701 is arranged between the main frame members 107 constituting the center frame portion 105. The battery case 701, as shown in FIG. 13, has a thin box shape and is formed to have a height substantially the same as that of the main frame member 107. The battery case 7 0 1 is disposed below the main floor portion 5 and between the main frame members 1 ◦ 7. The dry-type secondary battery 702 used in the present invention is a typical lithium battery. Such dry-type secondary batteries are usually packaged in combination of a plurality of batteries. At this time, in order to increase the density of large battery modules, they often become partly stacked and have a relatively large volume. In this embodiment, as described above, the left and right pair of front wheels 1 are provided, and the main floor portion 5 can be formed to have a large area having a width approximately equal to that of the left and right opposing intervals of the front wheels 1. Therefore, two rows can be arranged on the same plane A total of eight secondary batteries 702. The width (diameter) of the secondary battery 702 can be made approximately the same as or slightly higher than the height of the main frame member 107, and the battery mounting space can be set extremely thin. As shown in FIG. 14, the bottom of the battery case 701 is provided with a plurality of concave-convex shaped holding portions corresponding to the outer shape of the secondary battery 702. In this embodiment as the holding portion, a plurality of half-months -21-(18) (18) 200302716 are formed as ribs 7 0 1 a. As described above, by aligning the secondary batteries 702 on the same plane, the secondary batteries 702 are fixed so that they do not move the battery 701 due to vibration. By providing the half-moon-shaped rib portion 70 1 a, the secondary battery 70 2 is appropriately fixed so as not to affect each other. The battery case 7 0 1 has flange-shaped mounting portions 7 0 1 b on the left and right sides. The mounting portion 7 0 1 b is placed on the main frame member 10 7 and is held by small screws or the like. Installed on the main frame member 10 7. In this case, an insertion hole 7 0 1 c of the mounting screw is provided. A battery controller (substrate) 703 is arranged on the front of the battery case 701, that is, on the front side of the secondary battery 7 ◦ 2 via the holder 7 001 d. The battery controller 703 is to control that no capacitance difference or potential difference occurs between the secondary batteries 702 (batteries), and is arranged perpendicular to the bottom of the battery case 701. By arranging the battery controller 70 vertically between the parts around the front suspension device and the secondary battery 7 02, the space in the front-back direction can be effectively utilized, and even if the battery controller 70 is vertically installed 3, in real vehicles, the floor is inclined forward and upward and will not protrude downward, so it can effectively ensure the minimum ground clearance. As shown in FIG. 14 or FIG. 15, a flat case 7 0 4 is provided on the upper portion of the battery case 7 0 1. The casing 7 0 4 has a shape integrated with the upper opening of the battery case 7 1 1, and has a plurality of claw piece portions 7 0 a from the peripheral edge portion of the lower portion thereof. The battery case 7 1 is provided with a plurality of engaging portions 701e corresponding to the claw piece portion 7 0 4 a, and the claw piece portion 704a is engaged with the engaging portion 701e -22- (19) (19) 200302716 to fix the housing 7 0 4. At the joint between the battery case 701 and the case 704, a gasket is installed to prevent water or dust from entering the battery case 701. A battery or a battery pack is constituted by covering and fixing the casing 704 to a battery case 701 that houses the secondary battery 702. As shown in FIG. 15, a floor sheet 3 is arranged on the upper side of the battery or battery pack, that is, on the upper side of the casing 7 0 4. The floor sheet 3 is placed on the mounting portion 7 0 1 b of the battery case 7 0 1 through a partition, and is attached to the main frame member 107 by screws or the like. In this case, an insertion hole 3 a of a small mounting screw is provided in the peripheral portion of the floor sheet 3, and an insertion hole 7 0 1 f is also provided in the mounting portion 7 0 1 b at a corresponding position of the insertion hole 3 a. . On the lower side of the battery or battery pack, that is, on the lower side of the battery case 7 0 1, a lower flat plate-shaped lower protective plate 7 0 5 is arranged. The lower protective plate 705 is attached to the bridge member 109 and the bridge member 1 10 (see FIG. 6 and the like) by a small screw or the like to cover the lower portion of the battery case 701. In this case, the front edge portion and the rear edge portion of the lower protective plate 7 05 are respectively provided with insertion holes 7 0 5 a and 7 0 5 b for mounting screws (Fig. 14). In the small-sized electric vehicle of the present invention, referring to the above-mentioned drawings, the lower front half of the single seat cushion disposed behind the floor 3, as shown in FIG. 3 and the like, is provided to: A main controller 7 for electronically controlling the electric power to the electric motor 6 0 1 of the power unit 600, and a charging device 8 for charging the secondary battery 7 0 2 of the battery unit 7 0 0. The main controller 7 and the charging device 8 are covered by a car body shell (not shown) which is continuously installed from the floor 3-body, and is not exposed to the outside. A space between the left-hand pair of rear wheels 2 located behind the main controller 7 and the like is a box-shaped or cage-shaped luggage storage device 9. An upper portion of the luggage storage device 9 is provided to allow luggage to be stored. Access opening 9 a. The single seat cushion as described above is rotatably supported around the seat cushion column 1 1 4 at a position near the upper side of the seat cushion column 1 1 4. By appropriately rotating the single seat cushion, a part or all of the opening 9a of the luggage storage device 9 located below the single seat cushion can be opened and closed from above. On the other hand, a switch box (operation panel) 10 is mounted on the upper part of the steering frame 102 near the front of the steering handlebar 505. The switch box 10 is supported by, for example, a slightly key-shaped bracket 11 fixed to the upper end of the steering frame 102 as shown in Fig. 7. The switch box 10 is equipped with various switches, for example, a switch including forward and backward switch knobs, a speed setting knob, a battery remaining amount indicator, a charging lamp, left and right turn signal switches, and horn buttons. The switch box 10 is tilted appropriately at a position near the front of the steering handlebar 505 so that the hand can easily touch the switches required for operation and operation, and the display content of the display lamp is easily seen. Passengers riding on a single seat cushion can easily and reliably operate the switches of the switch box 10. At this time, the acceleration handle 5 0 6 can be appropriately operated according to needs. A wire reel box 12 having a wire reel stored in a position near the lower part of the switch box 10 is mounted on the steering frame 102. A charging wire that is elastically pulled in a winding direction is freely wound around the wire reel, and the charging wire is connected to the charging device 8. When the secondary battery 7 0 2 of the battery unit 7 0 • 24-(21) 200302716 is charged, the charging wire is released from the wire reel box 12, and the charging device 8 is connected to an external power source through the charging wire. . For example, the main switch 1 3 is mounted on the upper portion of the steering frame 102 by using the holder 5202. The main switch 13 is arranged at a position where it can be easily operated by an occupant seated on a single seat cushion. Below the main switch 13 is a box-shaped or cage-shaped luggage storage device 14 mounted on the steering frame 102. An upper portion of the luggage storage device 14 is provided with an opening for baggage access. In the above-mentioned case, each unit is designed by covering the body shell formed of plastic, synthetic resin, or the like to design the overall appearance of the vehicle. Leg shields and the like are mounted around the steering frame 102, and front fenders and rear fenders may be mounted around the front wheels 1 and the rear wheels 2, respectively. The real car is equipped with the safety or security parts required by Xingjun. Such assembly parts include: headlights, direction lights, parking lights, side-view mirrors or horns, etc., and other parts can be equipped as required. In actual use of the small electric vehicle of the present invention, a passenger riding on a single seat cushion will hold the steering handlebar 505, and can pull the vehicle by pulling the acceleration handle 506 or stepping on the foot brake 4 as needed. travel. In this case, the electric power is supplied to the power unit 6 0 from the battery unit 7 0 0 accommodated in the lower side of the floor sheet 3, and the rear wheel 2 is driven by the electric motor 6 0 1 of the power unit 6 0. The passenger can make the small electric vehicle run smoothly and appropriately. -25- (22) (22) 200302716 This electric vehicle is restricted to a legal system in the form of a total length of 12 00 m m and a full width of 700 m m or less. When a four-wheel type vehicle is constituted under these conditions, each wheel is arranged at four corners of the vehicle. In order to drive a narrow path and ensure a large steering angle, the vehicle frame is designed to be narrower near the front wheels. In order to use the floor as a foot or an object, a wide flat surface is required. Therefore, it is necessary to avoid the interference of the front wheels as much as possible. In the small electric vehicle of the present invention, it is necessary to coordinate the design of the vehicle frame and efficiently arrange the battery unit 700 to effectively ensure the floor surface. That is, in the main area of the floor sheet 3, a battery case 7 0 1 having a height approximately equal to the height of the frame is housed between the frames arranged along the edges of both sides thereof, and the battery case 7 0 A plurality of secondary batteries 7 0 2 are arranged inside 1. A plurality of secondary batteries 702 are arranged on the same plane, and the battery mounting space is set to be extremely thin. This not only ensures the lowest ground clearance ', but also realizes a floor with a wide flat surface, which can ensure an effective space under the feet. By arranging the battery unit 700 at the bottom of the vehicle and lowering its center of gravity, static and traveling stability can be improved. In the battery unit 700, the battery case 701 is mounted on the main frame member 107, and the battery case 701 is mounted on the main frame member 107. 1 or the lower protective plate 7 0 5 supports the weight of the secondary battery 7 0 2 'so the vehicle body shell does not have a strength member, and the cost can be reduced as a result. By providing the half-moon-shaped rib portion 7 〇 1 a as a holding portion at the bottom of the battery case 701, the secondary battery 7 0 2 ′ can be appropriately fixed and the vibration resistance during driving of the vehicle can be improved. -26- (23) 200302716 On the front side of the secondary battery 702, there is an intermediary battery, and an electric 703 is arranged perpendicular to the bottom of the battery case 701. It saves space and can effectively protect the battery controller 703 with the front suspension. The floor sheet 705 is arranged above and below the battery or battery pack, which can effectively protect the battery pack. In the small-sized electric vehicle of the present invention, as described above, the structure has a projecting structure formed by projecting downward from the battery case 701 by 2000. By holding the protruding structure at the front and the lower side of 701, a barrier or protective hand with a battery box 701 which is an important function of the vehicle is formed to effectively protect the precise power supply device. The luggage storage device 9 can be rotated as an appropriate single seat cushion, and a part or all of the opening 9a which can be lowered from above by the single seat cushion can be used. This baggage storage device 9 can prevent driving vibration, make it convenient to use, and improve convenience. Next, according to the characteristic brake pedal 8 0 of the present invention, as shown in FIG. 1 to FIG. 3 or FIG. 6, the brake is fixed between the front and rear of the left and right main frame members 107. Supported by the brake pedal seat 8 0 1 8. 0 0. That is, the brake pedal seat 801 and the brake system are arranged in the center frame arranged on the main frame 107: the holder 7 0 1 d: the zero wheel 3 and the lower protection plate front wheel support mechanism around the pool controller device. The rigid member is in the section of the power supply device of the battery box, and there can be a luggage case. The cover is opened and closed to configure the luggage to fly out, and 0 is used to describe the pedal seat 8 0 1 frame part 1 0 6 The brake pedal is used to move the pedal to the front of the battery unit 7 0 0 in the 800 frame part 1 05-5 (24) 200302716. In front of the moving pedal 8 0 0, a suspension arm bracket 2 2 2 is provided, a suspension spring 2 and a brake pedal seat 8 0 1, such as the first surface 80 1 a, and a pair of vertical continuous vertical standing 80 Surface 801b, a pair of supporting vertical surfaces 8 0 1 b with side edges extending outwardly, and a pair of side cable holding surfaces 8 0 1 d on both sides of the rear wheel; and the brake 8 0 2 with respect to the main frame member 1 0 7 sides 8 0 1 c are placed on the left and right sides, respectively. In a real vehicle, as shown in Fig. 7, the main body is inclined, so the supporting surface 8 0 8 0 1 c is supported horizontally. On the inner side of the 8 0 1 b, the pedal arm portion 8 0 0 b with the pedal 8 0 0 is formed, and the brake pedal 8 0 0 is like the long plate-shaped pedal portion 8 0 0 a of the seventh, and the left and right sides of the solid surface side. A pair of pedal arm portions 8 0 and 8 0 b are formed at the lower ends of the pair of pedal arm portions 8 0 0 c with outer surfaces of assembly holes 8 0 c and are provided with useful retainers 8 0 6. As described above, the brake pedal 8 0 0 and the lower assembly hole 8 0 4 are respectively assembled by the brake pedal seat 8 0 1 and the front wheel support mechanism 2 0 6. As shown in the figure, both ends of the horizontal a are 8 0 1 c on each vertical plane 801 b in a slightly vertical direction, and the f-plate holder 8 0 1 that is continuously extended to the inner side is locked by a bolt. The upper surface frame 103 of the left and right supporting frame members 107 is inclined forward and upward, and is inclined forward and backward, with a horizontal plane and a pair of hubs 803 that are freely rotatable on the left and right vertical planes. As shown by Φ, it is constituted by a back b extending left and right over the pedal portion 8 0 0 a, and at each pedal arm 0 4. On the other hand, the brake cable 8 0 5 connected to the brake arm 8 0 5 on the right pedal arm 8 0 0 b on the left and right brake pedal seats -28- (25) (25) 200302716 8 0 1 The brake pedal 8 0 is rotatably supported. Accordingly, in the front portion of the floor, the brake pedal 800 is projected upward, and the pedal portion 800a is disposed toward the single seat cushion side. On the front end of the floor sheet 3, as shown in Figs. 13 and 14, a pair of right and left cut-in portions 3b are formed, and the pedal arm portion 8 0b is located in each cut-in portion 3b. A brake cable 8 0 5 is connected to a retainer 8 0 6 of the brake pedal 8 0. The left and right brake cables 8 0 5 are held by a brake cable holding surface 8 0 1 d of the brake pedal seat 8 0 1. It is held and guided along the lower surface of the main frame member 107 to the rear wheel 2 side (see Figs. 3 and 6). The following describes the relationship between the brake pedal 8 0 0 and the power unit 6 0 0 described above. As shown in FIG. 18, the electric motor 6 0 1 is fixed to the housing 6 0 2 of the power unit 6 0 via a plurality of bolts 6 0 3. At the front end of the housing 602, a connecting portion 604 is provided with a bracket 3 002 pivotally supported at the rear end of the main frame member 107. At the rear end of the housing 602, a connection portion 605 connected to the lower end of the shock absorber 303 is provided. In the housing 602, a shaft portion 6 6 is rotatably supported in parallel with the output shaft 6 of the electric motor 601. The pinion 6 at the front end of the output shaft 6 〇1a and The gear 6 0 8 on the outer peripheral surface of the shaft portion 6 0 6 meshes. The outer peripheral surface of the shaft portion 6 0 6 is provided with a sliding gear 6 09 that can be slid in the axial direction. The sliding gear 6 0 9 is pressed toward the gear 6 08 side by a spring 6 1 0, and is connected to the gear 6 0 8 and the shaft portion 6 0 6 — Spins -29-(26) (26) 200302716 turns. A shaft portion 6 1 1 'sliding gear 6 0 9 is rotatably supported in the housing 6 0 2 and is arranged in parallel with the shaft portion 6 0 6. The gear 6 1 2 meshes with the outer peripheral surface of the shaft portion 6 1 1. . The axle 3 0 1 of the rear wheel 2 arranged parallel to the shaft portion 6 1 1 is rotatably supported and protrudes from the housing 6 02. The gear 6 1 3 on the outer peripheral surface of the shaft portion 6 1 1 meshes with the gear 6 1 4 on the outer peripheral surface of the axle 3 0 1. In such a power unit 600, the output of the electric motor 601 is reduced from the output shaft 6 0a via the gear set to the axle 3 0 1 to drive the rear wheel 2. The structure shown in Fig. 18 is an example. Although it is a three-stage deceleration, it is not limited to this. Inside the casing 6 0 2 ′ is a clutch shaft portion 6 1 5 arranged parallel to the shaft portion 6 0 6 via an output shaft 6 0 1 a of the electric motor 6 0 1. One end of the clutch shaft portion 6 1 5 protrudes from the housing 60 2, and a clutch lever (not shown) is provided at the protruding portion. When the clutch lever is actuated, the shift fork 6 1 7 is shifted via the spiral arm 6 1 6 provided on the clutch shaft 6 1 5. When the shift fork 6 1 7 is shifted, the sliding gear 6 0 9 associated with the shift fork 6 1 7 will slide against the spring 6 1 0 and will be separated from the gear 6 0 8 to block the electric motor 6 0 1 connection with rear wheel 2. Therefore, when the vehicle is pushed by hand, the electric motor 601 can be prevented from interlocking with the rotation of the rear wheel 2 and the load on the cart can be reduced. The axle 3 〇1 is connected to the rear wheel 2 and the inner wheel portion 9 0 1 of the rear wheel 2 is embedded with an output shaft -30- (27) 200302716 601 a which is engaged with the electric motor 6 0 1 The rear hub 902. The power unit of the inner wheel portion 9 0 1 with the same cover as the axle 3 1 1 is equipped with a pair of brake shoe pads, hinge pins 9 0 7 and the like. In such a braking mechanism, such as 800, the brake cable 80 operates the brake cam lever 9 0 6 9 0 6 and the lower cam 9 0 will hinge against the spring 9 0 9 and the brake shoe 9 0 5 The frictional force is pressed to brake the rear wheel 2. Although in Fig. 18, the needle 6 00 and the brake mechanism are shown to show the same power unit 6 0 0 and as described above, in the present development 6 1 1 is not equipped with an electromagnetic separate brake mechanism, and 8 0 0 is arranged on the floor. According to the rider's ideas, the front part of the floor can be arranged in a space with a smaller relative distance, and the pedal seat 801 and the brake pedal can be moved. The empty or welded brake drum 9 can be effectively used. 0 3 A brake guard 9 04 is provided on the shaft to cover the 6 0 0 side. The brake guards 904, 905, brake cam lever 906, and FIG. 19 do not show that when the inner cable 8 0 5 a of the brake pedal 5 is depressed, it will be pulled. Then, the brake cam lever 8 provided is rotated, and a pair of brake shoe pads 9 0 5 and a chain pin bolt 9 0 7 are expanded to the center. As a result, a brake mechanism is provided for the inner surface of the brake drum 903 with the power unit of the left rear wheel 2 and the right rear wheel 2. In Ming's small electric vehicle, the electric horse motor is used to operate the brake pedal of the brake mechanism for a pair of left and right rear wheels 2. Therefore, the foot operation will not have a sense of incongruity to perform the braking operation. There is a plate 8 0, which has a space between the left and right sides of the front wheel 1 and the rear of the front frame portion 106, so that it can be downsized without interfering with the floor space. -31-(28) (28) 200302716 By stepping on the rectangular pedal part 8 0 a extending to the left and right of the brake pedal 8 0 0, the braking mechanisms of the left and right rear wheels 2 will work simultaneously, so regardless of the left foot Or right foot can operate the brake pedal 8 0 0. The brake pedal seat 801 and the brake pedal 800 are arranged in front of the battery unit 700, and are in the suspension arm bracket 2 of the front wheel support mechanism 200, the suspension spring 206, etc. Rear, so it can protect the brake pedal seat 801 and the brake pedal 800. As described above, by stepping on a plate-shaped pedal portion 8 0 0 a, the braking mechanisms of the left and right rear wheels 2 act simultaneously. As shown in FIG. 20, a pair of left and right brakes arranged adjacently is used. The configuration of pedals 800 L and 800R is also possible. In this case, the left and right brake pedals 8 0 L and 8 0 R are composed of a pedal portion 8 00La and 800 Ra and a pedal fixed to the rear side of the pedal portion 8 0 0 L a and 8 0 0 R a. The arm is composed of 80Lb and Rb. Each of the pedal arm portions 800Lb and Rb is a brake mechanism that is connected to the left and right rear wheels 2 via a brake cable 805, respectively. In this example, the left and right brake pedals 800L and 800R can be independently operated, and as long as one of them is depressed, the vehicle can turn in place. Alternatively, if the left and right brake pedals 800L and 800R are connected via the connecting member, as in the above embodiment, as long as the brake pedals 800L and 800R are depressed with one of the left and right feet, The left and right rear wheels 2 can be stopped at the same time. The above description uses the embodiment to explain the present invention, but the present invention is not limited to this embodiment, and can be changed within the scope of the present invention. For example, the method of arranging the secondary battery 702 of the battery case 701 may be an arranging method other than the illustrated example. [Effects of the Invention] According to the present invention described above, in accordance with the design of a vehicle frame of such a small-sized electric vehicle, the battery unit can be efficiently secured to effectively ensure the floor surface. That is, a plurality of secondary batteries are arranged on the same plane, and the battery mounting space is set to be very thin. This not only ensures the lowest ground clearance, but also achieves a floor with a wide flat surface, which ensures an effective space under the feet. By placing the battery unit at the bottom of the vehicle to achieve a low center of gravity, static and traveling stability can be improved. In particular, small electric vehicles for the elderly or those with inconvenient feet have brake mechanisms for a pair of left and right rear wheels, and a brake pedal for operating the brake mechanism is provided at the front of the floor. There is no sense of incongruity when operating with feet, and braking operation can be performed according to the rider's ideas, which can ensure high safety. [Brief Description of the Drawings] Fig. 1 is a front perspective view showing a basic structure of a small electric vehicle according to an embodiment of the present invention. Fig. 2 is a rear perspective view showing a basic structure of a small electric vehicle according to an embodiment of the present invention. Fig. 3 is a side view showing the basic structure of the embodiment of the small electric vehicle of the present invention. (33) (30) (30) 200302716. Fig. 4 is a plan view showing a basic structure of a small electric vehicle according to an embodiment of the present invention. Fig. 5 is a front view showing a basic structure of a small electric vehicle according to an embodiment of the present invention. Fig. 6 is a perspective view showing a frame unit and a battery unit around a small electric vehicle according to an embodiment of the present invention. Fig. 7 is a side view of the periphery of a frame unit showing an embodiment of a small electric vehicle according to the present invention. Fig. 8 is a plan view showing the periphery of a frame unit of a small electric vehicle according to an embodiment of the present invention. Fig. 9 is a perspective view showing the periphery of a front wheel support mechanism of a small electric vehicle according to an embodiment of the present invention. Fig. 10 is a perspective view showing the periphery of a turning mechanism of a single seat cushion showing an embodiment of a small electric vehicle according to the present invention. Fig. 11 is a perspective view of the periphery of a steering handlebar showing an embodiment of a small electric vehicle according to the present invention. Fig. 12 is a side view of the periphery of a steering handlebar showing an embodiment of a small electric vehicle according to the present invention. Fig. 13 is a perspective view of a battery unit showing an embodiment of a small electric vehicle according to the present invention. Fig. 14 is an exploded perspective view of a battery unit showing an embodiment of a small electric vehicle according to the present invention. Fig. 15 is a side view of a -34- (31) (31) 200302716 battery unit showing a small electric vehicle according to an embodiment of the present invention. Fig. 16 is a view showing a brake pedal seat of a small electric vehicle according to an embodiment of the present invention. Fig. 17 is a display diagram of a brake pedal showing an embodiment of a small electric vehicle according to the present invention. Fig. 18 is a cross-sectional view showing the periphery of a power unit and a braking mechanism showing an embodiment of a small electric vehicle according to the present invention. Fig. 19 is a diagram showing the periphery of a brake mechanism showing an embodiment of a small electric vehicle according to the present invention. Fig. 20 is a perspective view showing a modified example of a brake pedal according to an embodiment of the small electric vehicle according to the present invention. [Illustration of drawing number] 1: Front wheel 2: Rear wheel 3: Floor sheet_ 7: Main controller 8: Charging device 9: Luggage storage device 1 0: Switch box 1 2: Wire reel box 1 3: Main switch 1 〇〇 : Frame unit 1 0 1: Body frame 35- (32) (32) 200302716 1 0 2: Steering frame 10 0: Main frame, 104: Rear frame. 1 0 5: Central frame part _ 1 0 6: Front frame part 1 0 7: Main frame members 108, 109, 110: Bridge member 1 1 4: Seat post · 2 0 0: Front wheel support mechanism 2 0 1: Base Seat member 2 0 2: Suspension arm bracket 2 0 3: Suspension arm 2 0 4: Joint 2 0 5: Axle 2 0 6: Suspension spring 2 0 7: Bracket φ 3 0 0: Rear wheel support Mechanism 3 0 1: Axle 3 2 2: Bracket 3 0 3: Shock absorber, 4 0 0: Cushion unit, 4 0 1: Cushion cushion frame 4 0 2: Backrest frame 4 0 3: Cushion cushion -36- (33) (33) 200302716 4 0 4: Seat backrest 4 5: Armrest-5 0 0: Steering mechanism _ 5 0 1: Steering shaft 5 0 5: Steering handlebar carving 5 0 6: Acceleration Handle 5 0 8: Countershaft 5 0 9 ·· Tie rod arm Φ 5 1〇: Articulated arm 5 1 1: Tie rod 6 0: Power unit 6 0 1: Electric motor 7 0 0: Battery unit 7 0 1: Battery case 7 0 2: Secondary battery 7 0 3: Battery controller φ 7 0 4: Case 7 0 5: Lower protection plate 8 0 0: Brake pedal 8 0 1: Brake pedal seat '8 0 2: Bolt- 8 0 3: Hub 8 0 4: Assembly hole 8 0 5: Brake cable -37-