200406538 ⑴ 玖、發明說明 【發明所屬之技術領域】 本發明是關於機車等的小型車輛的燃料配管構造，以 引擎與用來將引擎的輸出變速來將其傳達到後輪的變速器 所構成且在後部軸支承著上述後輪的動力單元的前部，是 可上下擺動地被支承在車體框架，在該車體框架的前後方 向上，在與引擎分隔的位置’將油箱搭載於車體框架，將 來自於將油箱的燃料汲起的燃料泵浦的燃料加以導引的燃 料軟管，是被連接在引擎所附設的燃料噴射閥的小型車 輛，是關於該小型車輛的燃料配管構造的改良。 【先前技術】 用來將從燃料泵浦排出的燃料導引至燃料噴射閥的燃 料軟管，由於需要要求其耐壓性，所以作成有較高的剛 性，這種燃料軟管，對於彎曲的強度較弱。因此，習知的 構造是將燃料泵浦配置在引擎側，讓燃料泵浦及燃料噴射 閥之間的燃料軟管不會彎曲（例如參照專利文獻1 )。 〔專利文獻1〕 日本特開2000 — 64925號公報 【發明內容】 〔發明欲解決的課題] 在上述的將燃料泵浦配置在引擎側的構造中，可擺動 -5- (2) (2)200406538 地被支承在車體框架的動力單元會大型化，而且動力單兀 的組裝性也不是很好。 本發明鑒於這種情形，其目的要提供一種小型車輛的 燃料配管裝置，希望讓動力單元小型化旦提昇動力單元的 組裝性，且提昇燃料軟管的耐久性。 〔用以解決課題的手段〕 用來達成上述目的，第1發明，以引擎、與用來將該 引擎的輸出變速來將其傳達到後輪的變速器所構成且在後 部軸支承著上述後輪的動力單元的前部，是可上下擺動地 被支承在車體框架，在該車體框架的前後方向上，在與引 擎分隔的位置，將油箱搭載於車體框架，將來自於將油箱 的燃料汲起的燃料泵浦的燃料加以導引的燃料軟管，是被 連接在上述引擎所附設的燃料噴射閥的小型車輛，其特徵 爲：上述燃料泵浦被內置於上述油箱，用來將其中一端被 連接在上述燃料泵浦的上述燃料軟管的中間部予以保持的 第一箍位器，是被固定在車體框架，在上述燃料噴射閥及 第一箍位器之間，上述燃料軟管是配置成彎曲向車體框架 的左右方向。 錯由迨種桌1發明的構造，燃料栗浦，是在車體框架 的則後方向’在與引擎分隔的位置，是被內置於車體框架 所搭載的油箱，所以不用將燃料泵浦安裝在動力單元，而 可讓動力單元小型化’且提昇動力單元的組裝性。並且因 應於動力單元上下擺動的動作，，燃料軟管之中的第一箍 -6- (3) (3)200406538 位器及引擎之間的部分會被扭轉’可以避免讓燃料軟管彎 曲變形，相對於扭轉的燃料軟管的強度是較相對於彎曲的 強度更高，所以可以提昇燃料軟管的耐久性。 第2發明，是針對上述第1發明的構造，用來保持上 述燃料軟管的靠近上述引擎的部分的第二箍位器，是被固 定在上述引擎側，在第一及第二箍位器之間，上述燃料軟 管是配置成彎曲向車體框架的左右方向；藉由這種構造， 錯由弟一^榧位窃’可以提局燃料軟管朝向車體框架的左右 方向的彎曲配置精度，並且可防止在燃料軟管朝向燃料噴 射閥的連接部產生彎曲變形。 第3發明，是針對上述第2發明的構造，上述第一及 第二箍位器，是分開配置在朝前後延伸的車體中心線的左 右兩側，藉由這種構造，則可將在燃料軟管的第一及第二 縮位器之間的長度設定得較長，藉此，則可確實地抑制彎 曲負荷施加在燃料軟管的情形，可更提昇燃料軟管的耐久 性。 第4發明，是針對上述第3發明的構造，上述第一及 第一縮位器之間的上述燃料軟管，是被配置成：不管是來 自於哪一個箍位器都是朝向車體框架的左右方向同一側延 伸，豬由這種構造，則可將在燃料軟管的第一及第二箍位 窃之間的長度設定得更長，則可更提昇燃料軟管的耐久 性。 第5發明，是針對上述第丨、2、3或4發明的構造， 上述燃料軟管是作成多層高壓型，藉由這種構造，可以增 -7- (4) (4)200406538 加燃料軟管的強度，有助於提昇燃料軟管的耐久性。 【實施方式】 以下，根據附圖所不的本發明的一實施例來說明本發 明的實施方式。 弟1圖〜第6圖是顯不本發明的一實施例，第1圖是 速克達型機車的側面圖，第2圖是省略車體外殼的狀態的 第1圖的2端視圖，第3圖是第2圖的3端視圖，第4圖 是第2圖的主要部分放大圖，第5圖是燃料軟管的局部缺 口側面圖，第6圖是因應動力單元的搖動的燃料軟管的動 作狀態的說明圖。 首先在第1圖及第2圖，小型車輛的速克達型機車的 車體框架1 1，是具備有：從可轉向地支承用來軸支承前 輪WF的前叉1 4的頭管1 5朝後下方延伸的下管1 6、從該 下管1 6的上部以較該下管丨6更和緩的傾斜角度向後下方 延伸的上管1 7、前端部連接設置在上管1 7的後端部，朝 後上方延伸且後端互相連結的左右的一對後管1 8、1 8、 以及前端部連結在上述下管1 6的下端部，且後端是連接 設置在上述兩後管1 8、1 8的中間部的左右一對的低管 1 9、1 9 ;兩低管1 9、1 9，從側面來看是彎曲成朝上方開 啓的略U字型。 在上述車體框架1 1的前後方向中間部，是可上下擺 動地支承著動力單元P的前部，該動力單元P是以：使氣 缸軸線朝前上方傾斜的引擎E、以及將該引擎E的輸出進 -8- (5) ^ (5) ^200406538 行無段變速來將其傳達到後輪WR的無段變速器M所構 成，上述後輪WR是被軸支承在動力單元Ρ的後部，在車 體框架1 1的後端部與上述動力單元Ρ之間設置有後避震 單元 2 0。 合倂參照第3圖，在上述兩後管1 8、1 8與上述低管 1 9、1 9的連設部，是分別固定安裝著上部托架2 ；[……。 另一方面，在引擎Ε的曲軸箱22的上面部，是固定安裝 著左右的一對下部托架23……，引擎吊架24的兩端部是 可擺動地被支承在上部托架2 1……，而在引擎吊架24則 疋可fiS動地支承者上述兩下部托架23....... 在後輪WR的左側的無段變速器μ的上方，是配置 有以該無段變速器Μ所支承的空氣濾淸器2 5，以該空氣 濾、淸器25所淨化的空氣會經由進氣管26而連接到節流閥 主體27，該節流閥主體27，是經由彎曲爲略U字型的進 氣連接管2 8 ’在沿著引擎Ε的左右方向的略中心位置被 連接到氣缸頭2 9。並且在進氣連接管2 8的上部，是嵌合 者燃料噴射閥3 〇的下部，在具有通到燃料噴射閥3 〇的燃 料通路31a且被鎖裝在上述進氣連接管28的夾具31、與 上述進氣連接管2 8之間保持著燃料噴射閥3 〇。 上述引擎吊架24，是作成允許將進氣管26與節流閥 主體27配置在該引擎吊架24的中央部上方，中央部是作 成下方凹陷的略U字型。 在車體框架1 1的前後方向，在與上述引擎E分隔的 k置’在車體框架1 I是搭載了油箱32，在該實施例中， -9 - (6) (6)200406538 油箱3 2 ’是被配置在以下管1 6、上管1 7、與兩低管1 9、 1 9所圍繞的部分的前部，而被支承在兩低管！ 9、1 9。也 就是說，油箱3 2，是在沿著車體框架1 1的前後方向的與 上述引擎E在前方分隔的位置被搭載於車體框架1 1。 上述車體框架1 1、動力單元P的一部分以及油箱 3 2 ’是與車體框架n 一起被構成車體1 3的合成樹脂製的 車體外殼12所覆蓋，該車體外殻12，是由：覆蓋車體框 架1 1的前部的前外殼3 3、連接設置在該前外殼3 3的兩 側的左右的一對腿部護罩3 4.......分別連接於腿部護罩 34 ......的下端的左右的一對腳踏板3 5.......在兩腳踏板 35 ......之間朝上方隆起來覆蓋油箱3 2的地板隧道部3 6、 從上述兩腳踏板 3 5……的外側緣部向下方垂下的裙部 37.......以及連接於裙部3 7......，腳踏板3 5......，與地 板隧道部3 6來覆蓋車體框架1 1的後部的後外殻3 8所構 成。 在後外殼3 8上，是配置了以上述兩後管1 8、1 8所支 承的雙人乘坐式的座墊3 9。 在油箱32，是內置有：過濾器40、以及經由該過濾 器4 0來將油箱3 2內的燃料汲起的燃料泵浦4 1 ’其中一 端連接在該燃料泵浦4 1的燃料軟管42的另一端’是經由 上述夾具3 1而連接在上述燃料噴射閥3 0。 在第4圖，在車體框架1 1，是固定著用來保持燃料 軟管42的中間部的第一箍位器43，在該實施例中，左右 一對的後管1 8、1 8中，在朝向機車的行進方向前方的狀 -10- (7) 200406538 態，在位於左側的後管1 8的前部所設置的支承板 鎖裝著第一箍位器4 3。 並且在燃料噴射閥3 0與第一箍位器4 3之間， 管4 2是被配置成朝向車體框架1 1的左右方向彎曲 將用來保持著燃料軟管42的靠近引擎E的部分的 位器4 5鎖裝在支承腕部4 6，以將第二箍位器4 5 引擎E側。支承腕部46的基端部，是與上述夾具 被鎖裝在進氣連接管2 8，在該支承腕部4 6的前端 裝著上述第二箍位器45。 在第 5圖，上述燃料軟管42，是由：例如氟 所構成的內層部42a、藉由腈橡膠所成型用來覆蓋 層部42a的中層部42b、由聚酯所構成並且用來覆 中層部42b的網絡部42c、以及由聚環氧氯丙烷所 最外層的外層部42d所構成的多層高壓型構造。該 管4 2的其中一端，是被接合在連接於油箱3 2的 4 7 ’對連接器4 7的燃料軟管4 2的接合是藉由第一 48來維持。而燃料軟管42的另一端是被接合在連 料噴射閥3 0的夾具3 1，對夾具3 ]的燃料軟管42 是藉由第二箍位器4 9來維持。 燃料軟管4 2，是以例如由乙烯丙烯橡膠所構 護軟管5 0所覆蓋的構造，以第二箍位器4 9連接 3 1的狀態的燃料軟管4 2，是從其中一端側插通到 管5〇 ’從保護軟管50突出的燃料軟管42的其中 以第一箍位器4 8被連接到連接器4 7。 4 4，是 燃料軟 ，藉由 第二箍 固定在 3 1 —起 部是鎖 類橡膠 上述內 蓋上述 構成的 燃料軟 連接描1 箍位器 接於燃 的接合 成的保 在夾具 保護軟 一端會 -11 - (8) (8)200406538 第一箍位器4 3，是將安裝板部5 2 —體地連接設置到 圓筒部51所構成的構造，在圓筒部5 1，是安裝著貫穿該 _筒邰5 1的圓筒狀的緩衝橡膠5 3，該緩衝橡膠5 3在兩 瑞具有抵fee於s亥圓筒部5〗的兩端的凸緣5 3 a、5 3 a。而藉 由將覆蓋著燃料軟管42的保護軟管Μ插通到上述緩衝橡 祕5 3，來以第一箍位器4 3保持燃料軟管4 2 ,在上述安裝 板邰5 1所設置的插通孔54，是插通著用來將第一箍位器 4 3鎖裝在車體框架1 1的螺栓$ 5。 第一箍位器45，是具有與上述第一箍位器43相同的 構造’是經由緩衝橡膠5 3及保護管5 〇來以第二箍位器 4 5保持著燃料軟管4 2，藉由螺栓5 6來將第二箍位器4 5 鎖裝在支承腕部46。 並且桌一及桌一箍位器43、45是分開配置在朝前後 方向延伸的車體中心線B C的左右兩側，第一及第二箍位 器4 3、4 5間的燃料軟管4 2及保護軟管5 0，是配置成： 不管是來自於哪一個箍位器4 3、4 5，都是朝車體框架j j 的左右方向同一側，在該實施例中，在朝向機車的行進方 向的前方的狀態，是朝向右側延伸。也就是說，第一及第 二箍位器43、45間的燃料軟管42，是彎曲配置成向車體 框架1 1的右側突出。 引擎E，其左右方向的略中心位置也就是燃料噴射閥 3 0的配置位置，從上述車體中心線BC起算與第一箍位器 4 3是在同一側，也就是說是偏置在左側，是被支承在車 體框架1 1，利用這種配置，有利於確保燃料軟管4 2的擺 -12^ (9) (9)200406538 動長度。 接下來針對實施例的作用來加以說明’燃料泵浦 4 1，是在車體框架1 1的前後方向與引擎E分隔的位置被 內置在車體框架1 1所搭載的油箱3 2，由於燃料泵浦4 1 不是安裝在動力單元P，所以可以讓動力單元P小型化， 且提昇動力單元P的組裝性。 在車體框架1 1，是固定著用來保持燃料軟管42的中 間部的第一箍位器4 3，在引擎E所附設的燃料噴射閥3 0 與第一箍位器43之間，燃料軟管42是朝向車體框架1 1 的左右方向彎曲配置。因應於動力單元P在第6圖（a) 所示的上方位置與第6圖（b )所示的下方位置之間上下 擺動的動作，燃料軟管4 2中的第一箍位器4 3與引擎E之 間的部分，會如第6圖（b )的箭頭所示地扭轉。於是可 以避免由於動力單元P的上下擺動而在燃料軟管42產生 彎曲變形，燃料軟管42相對於扭轉的強度是比相對於彎 曲的強度更高，與彎曲變形的構造相比，可以更提昇燃料 軟管4 2的耐久性。 用來保持燃料軟管42的靠近引擎E的部分的第二箍 位器4 5是被固定在引擎E側，在第一及第二箍位器* 3、 4 5之間’燃料軟管4 2是朝向車體框架丨丨的左右方向彎 曲配置’所以藉由第二箍位器4 5，可以提高朝向車體框 架1 1的左右方向彎曲配置的燃料軟管42的精確度，並且 以對燃料噴射閥3 0的燃料軟管4 2的連接部，來防止在燃 料軟管42產生彎曲變形。 -13- (10) 200406538 第一及第二箍位器4 3、4 5，是分開配置在 線B C的左右兩側，所以可以將燃料軟管4 2在 二箍位器43、45之間的長度設定得較長，藉此 實地抑制施加在燃料軟管4 2的彎曲負荷，可更 軟管4 2的耐久性。 第一及第二箍位器4 3、4 5間的上述燃料軟< 管是來自於哪一個箍位器4 3、4 5都是配置成朝 架1 1的左右方向同一側延伸，所以可以將燃料車 第一及第二箍位器4 3、4 5之間的長度設定得較 可以將燃料軟管4 2在第一及第二箍位器4 3、4 5 度設定得更長，可更提昇燃料軟管42的耐久性。 並且由於燃料軟管42是作成多層高壓型， 大燃料軟管42的強度，有助於提昇用來導流高 燃料軟管42的耐久性。 以上，雖然是說明本發明的實施例，可是本 限定於上述實施例，只要不脫離申請專利範圍記 明，可以進行種種的設計變更。 〔發明效果〕 藉由以上所述的第1發明，則可讓動力單元 提昇動力單元的組裝性，藉由動力單元P的上下 避免產生彎曲變形而產生扭轉，則可提升燃料軟 性。 藉由第2發明，可以提高朝向車體框架 車體中心 第一及第 ，可更確 提昇燃料 f 42，不 向車體框 t管42在 長，所以 之間的長 所以可增 壓燃料的 發明並不 載的本發 小型化且 擺動，可 管的耐久 的左右方 -14- (11)200406538 向彎曲配置的燃料軟管 閥的燃料軟管的連？妾@ 形。 勺h確度’並且以對燃料噴射 末防止在燃料軟管產生彎曲變 藉由第3發明’可以將燃料軟管在第—及第二箍位器 之間的長度設定得較長，藉此，W更確實地抑制施加在燃 料軟管的彎曲負荷，可更提昇燃料軟管的耐久性。 藉由第4發明，可以將燃料軟管在第一及第二箍位器 之間的長度設定得更長，可更提昇燃料軟管的耐久性。 錯由第5發明，可增大燃料軟管的強度，有助於提昇 用來導k局壓燃料的燃料軟管的耐久性。 【圖式簡單說明】 第1圖是速克達型機車的側面圖。 第2圖是省略車體外殼的狀態的第]圖的2端視圖。 第3圖是第2圖的3端視圖。 弟4圖是弟2圖的主要部分放大圖。 第5圖是燃料軟管的局部缺口側面圖。 第6圖是因應動力單元的搖動的燃料軟管的動作狀態 的說明圖。 〔圖號說明〕 1 1 :車體框架 3 0 :燃料噴射閥 3 2 :油箱 -15- (12) (12)200406538 4 1 :燃料軟管 42 :燃料軟管 43 :第一箍位器 4 5 :第二箍位器 E :引擎 Μ :無段變速器 Ρ :動力單元 WR :後輪200406538 发明 发明, description of the invention [Technical field to which the invention belongs] The present invention relates to a fuel piping structure of a small vehicle such as a locomotive. The engine and a transmission for shifting the output of the engine to a rear wheel are transmitted to the engine. The front part of the power unit that supports the rear wheels is supported on the vehicle body frame in a swingable manner. The fuel tank is mounted on the vehicle body frame at a position separated from the engine in the front-rear direction of the vehicle body frame. The fuel hose that guides the fuel from the fuel pump pumped from the fuel in the fuel tank is a small vehicle connected to a fuel injection valve attached to the engine, and is an improvement of the fuel piping structure of the small vehicle . [Prior art] The fuel hose used to guide the fuel discharged from the fuel pump to the fuel injection valve requires high pressure resistance, so it has high rigidity. This fuel hose is suitable for curved Weakness. Therefore, a conventional structure is to arrange the fuel pump on the engine side so that the fuel hose between the fuel pump and the fuel injection valve is not bent (for example, refer to Patent Document 1). [Patent Document 1] Japanese Patent Laid-Open No. 2000-64925 [Summary of the Invention] [Problems to be Solved by the Invention] In the above-mentioned structure in which the fuel pump is arranged on the engine side, it can swing -5- (2) (2) 200406538 The power unit supported on the vehicle body frame will be large, and the assembly of the power unit is not very good. In view of this situation, the present invention aims to provide a fuel piping device for a small vehicle. It is desired to make the power unit small in size to improve the assemblability of the power unit and improve the durability of the fuel hose. [Means for Solving the Problems] To achieve the above object, the first invention is an engine and a transmission for shifting the output of the engine to the rear wheels, and supports the rear wheels at the rear axle. The front part of the power unit is supported by the vehicle body frame in a swingable manner. The fuel tank is mounted on the vehicle body frame at a position separated from the engine in the front-rear direction of the vehicle body frame. The fuel hose guided by the fuel pumped fuel is a small vehicle that is connected to a fuel injection valve attached to the engine, and is characterized in that the fuel pump is built into the fuel tank and is used for The first clamp which is connected at one end to the middle portion of the fuel hose which is pumped by the fuel pump is fixed to the vehicle body frame, and the fuel is between the fuel injection valve and the first clamp. The hose is arranged to be bent in the left-right direction of the vehicle body frame. The structure invented by the first table, fuel Kuriura, is in the rear direction of the vehicle body frame. It is separated from the engine. In the power unit, the power unit can be miniaturized and the assemblability of the power unit can be improved. And in response to the action of the power unit swinging up and down, the first hoop in the fuel hose-6- (3) (3) 200406538 position between the positioner and the engine will be twisted 'to prevent the fuel hose from bending and deforming The strength relative to a twisted fuel hose is higher than the strength relative to a bend, so the durability of the fuel hose can be improved. A second invention is a structure of the first invention, and the second clamp for holding the part of the fuel hose close to the engine is fixed to the engine side, and the first and second clamps In the meantime, the fuel hose is configured to be bent to the left and right direction of the vehicle body frame; with this structure, it is possible to mention that the fuel hose is bent to the left and right direction of the vehicle body frame by mistake. It is accurate and prevents bending deformation at the connection portion of the fuel hose toward the fuel injection valve. The third invention is directed to the structure of the second invention. The first and second clamps are separately arranged on the left and right sides of the centerline of the vehicle body extending forward and backward. With this structure, the By setting the length between the first and second retractors of the fuel hose to be long, it is possible to reliably suppress the bending load from being applied to the fuel hose, and to further improve the durability of the fuel hose. The fourth invention is the structure according to the third invention, and the fuel hose between the first and the first retractors is arranged so that whatever the hoop comes from, it faces the vehicle body frame. The left and right directions extend on the same side. With this structure, the length between the first and second hoop of the fuel hose can be set longer, and the durability of the fuel hose can be further improved. The fifth invention is directed to the structure of the above-mentioned first, second, third, or fourth invention. The fuel hose is a multilayer high-pressure type. With this structure, it is possible to increase the fuel consumption by -7- (4) (4) 200406538. The strength of the tube helps to improve the durability of the fuel hose. [Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to an embodiment of the present invention not shown in the drawings. Figures 1 to 6 show an embodiment of the present invention. The first figure is a side view of a speed locomotive, and the second figure is a 2 end view of the first figure in a state in which the body shell is omitted. Fig. 3 is an end view of Fig. 2; Fig. 4 is an enlarged view of the main part of Fig. 2; Fig. 5 is a partial cutaway side view of the fuel hose; and Fig. 6 is a fuel hose corresponding to the swing of the power unit. An explanatory diagram of the operating state. First, in FIG. 1 and FIG. 2, a body frame 11 of a small-sized Scooter locomotive is provided with a head pipe 1 5 which is steerably supported by a front fork 14 for pivotally supporting a front wheel WF. The lower tube 16 extending rearward and downward, the upper tube 17 extending rearward and downward from the upper portion of the lower tube 16 at a gentler inclination angle than the lower tube 6 and the front end is connected behind the upper tube 17 The end portion is a pair of left and right rear tubes 18, 18, which extend rearward and upward and the rear ends are connected to each other, and the front end portion is connected to the lower end portion of the lower tube 16 and the rear end is connected to the two rear tubes. A pair of left and right low pipes 19, 19 at the middle part of 18, 18; the two low pipes 19, 19 are curved into a slightly U-shape opening from the side. The middle portion of the body frame 11 in the front-rear direction is a front portion that supports a power unit P that can swing up and down. The power unit P is an engine E that tilts a cylinder axis forward and upward, and the engine E The output of -8- (5) ^ (5) ^ 200406538 consists of a stepless transmission M that transmits stepless transmission to the rear wheel WR, which is supported by the shaft at the rear of the power unit P, A rear suspension unit 20 is provided between the rear end portion of the vehicle body frame 11 and the power unit P described above. Combined with reference to FIG. 3, the upper bracket 2 is fixedly installed at the connecting portion of the two rear pipes 18, 18 and the lower pipes 19, 19, respectively; [...]. On the other hand, on the upper surface of the crankcase 22 of the engine E, a pair of left and right lower brackets 23 are fixedly mounted, and both ends of the engine hanger 24 are swingably supported on the upper bracket 2 1. ... On the engine hanger 24, the two lower brackets 23 can be supported by fiS............ The air filter 25 supported by the step transmission M is connected to the throttle body 27 through the intake pipe 26 with the air purified by the air filter 25. The throttle body 27 is bent The intake connection pipe 2 8 ′ having a substantially U-shape is connected to the cylinder head 29 at a substantially center position along the left-right direction of the engine E. The upper part of the intake connection pipe 28 is the lower part of the fitted fuel injection valve 30, and the clamp 31 having the fuel passage 31a leading to the fuel injection valve 30 is locked to the intake connection pipe 28 A fuel injection valve 30 is held between the intake connection pipe 28 and the fuel injection valve 30. The engine hanger 24 is formed in a slightly U-shape to allow the intake pipe 26 and the throttle body 27 to be arranged above the central portion of the engine hanger 24, and the central portion is recessed downward. In the front-rear direction of the vehicle body frame 11, the fuel tank 32 is mounted on the vehicle body frame 1 at a position k separated from the engine E. In this embodiment, -9-(6) (6) 200406538 fuel tank 3 2 'is arranged at the front of the part surrounded by the lower tube 16, the upper tube 17, and the two lower tubes 19, 19, and is supported by the two lower tubes! 9, 1 9. That is, the fuel tank 32 is mounted on the body frame 11 at a position spaced forward from the engine E along the front-rear direction of the body frame 11. The body frame 11, a part of the power unit P, and the fuel tank 3 2 ′ are covered with the body frame n by a body shell 12 made of synthetic resin constituting the body 13. The body shell 12 is It is composed of: a front shell 3 covering the front part of the vehicle body frame 1 3; 3. a pair of left and right leg shields 3 provided on both sides of the front shell 3 3; A pair of left and right foot pedals 3 at the lower end of the part shield 34....... 2 floor tunnel portion 3 6, skirt portion 37 which hangs downward from the outer edge portions of the two footboards 3 5... And the skirt portion 37 connected to the skirt portion 3... The footboards 3 5... Are formed with the floor tunnel portion 36 to cover the rear shell 38 of the rear portion of the vehicle body frame 11. The rear case 38 is provided with a two-person seat cushion 39 supported by the two rear pipes 18 and 18. The fuel tank 32 includes a filter 40 and a fuel hose 4 1 ′, which is connected to the fuel pump 41 by a fuel pump 4 1 ′, which pumps fuel in the fuel tank 32 through the filter 40. The other end 42 is connected to the fuel injection valve 30 via the clamp 31. In FIG. 4, a first hoop 43 is fixed to the vehicle body frame 11 to hold the middle portion of the fuel hose 42. In this embodiment, a pair of left and right rear pipes 18 and 18 In the state -10- (7) 200406538 facing forward in the direction of travel of the locomotive, the first hoop 43 is locked on the support plate provided at the front of the rear pipe 18 on the left. And between the fuel injection valve 30 and the first clamp 43, the pipe 42 is arranged to bend toward the left and right direction of the vehicle body frame 11 and will hold the fuel hose 42 close to the engine E The positioner 4 5 is locked on the supporting wrist portion 4 6 to place the second hoop 4 5 on the engine E side. The base end portion of the support arm portion 46 is locked to the air inlet connection pipe 28 with the jig, and the second clamp 45 is attached to the front end of the support arm portion 46. In FIG. 5, the fuel hose 42 is composed of, for example, an inner layer portion 42 a made of fluorine, a middle layer portion 42 b formed by covering with the nitrile rubber to cover the layer portion 42 a, and a cover made of polyester. The network portion 42c of the middle layer portion 42b and the multilayer high-pressure type structure constituted by the outer layer portion 42d of the outermost layer of polychlorohydrin. One end of the tube 42 is connected to the fuel hose 42 of the connector 47, which is connected to the connector 47 of the fuel tank 32, and is connected by the first 48. The other end of the fuel hose 42 is a clamp 31 which is connected to the injection valve 30, and the fuel hose 42 of the clamp 3] is maintained by a second clamp 49. The fuel hose 4 2 has a structure covered with, for example, an ethylene-propylene rubber protective hose 50. The fuel hose 4 2 is connected to the 3 1 by the second clamp 4 9. The fuel hose 42 protruding from the protective hose 50 which is inserted into the tube 50 ′ is connected to the connector 47 with a first clamp 48. 4 4 is the fuel soft, fixed to 3 1 by the second hoop. The starting part is the lock rubber. The inner cover is the above-mentioned fuel soft connection. 1 The hoop is connected to the fuel connection and the soft end of the clamp protects it. Meeting-11-(8) (8) 200406538 The first clamp 4 3 is a structure in which the mounting plate portion 5 2 is integrally provided to the cylindrical portion 51, and the cylindrical portion 51 is a structure A cylindrical buffer rubber 5 3 penetrating through the cylindrical tube 51 is provided, and the buffer rubber 53 has flanges 5 3 a and 5 3 a at both ends which abut on the cylindrical portion 5. The protective hose M covering the fuel hose 42 is inserted into the buffer rubber 5 3 to hold the fuel hose 4 2 by the first clamp 4 3, and is provided on the mounting plate 邰 51. The insertion hole 54 is inserted through a bolt $ 5 for locking the first clamp 4 3 to the body frame 11. The first clamp 45 has the same structure as the first clamp 43 described above. The fuel hose 42 is held by the second clamp 45 through the buffer rubber 5 3 and the protection tube 50. The second clamp 4 5 is locked to the support arm 46 by a bolt 56. In addition, the first and second clamps 43 and 45 are separately arranged on the left and right sides of the centerline BC of the vehicle body extending in the front-rear direction, and the fuel hoses 4 between the first and second clamps 4 3 and 4 5 are arranged. 2 and the protective hose 50 are configured as follows: Regardless of which hoop 4 3, 4 5 comes from, it is on the same side in the left-right direction of the body frame jj. In this embodiment, the The forward state in the traveling direction is extended to the right. That is, the fuel hose 42 between the first and second clamps 43 and 45 is bent and arranged so as to protrude to the right of the vehicle body frame 11. The slightly center position of the engine E in the left-right direction is also the position of the fuel injection valve 30. From the centerline BC of the vehicle body, it is on the same side as the first hoop 43, that is, it is offset to the left. Is supported on the vehicle body frame 1 1. With this configuration, it is helpful to ensure the swing of the fuel hose 4 2 -12 ^ (9) (9) 200406538. Next, the function of the embodiment will be described. The fuel pump 41 is built in the fuel tank 3 2 mounted on the vehicle body frame 1 1 at a position separated from the engine E in the front-rear direction of the vehicle body frame 1 1. Since the pump 41 is not mounted on the power unit P, the power unit P can be miniaturized and the assemblability of the power unit P can be improved. The vehicle body frame 11 is fixed to a first hoop 43 for holding the middle portion of the fuel hose 42 between the fuel injection valve 30 and the first hoop 43 attached to the engine E. The fuel hose 42 is arranged to be bent in the left-right direction of the vehicle body frame 1 1. In response to the power unit P swinging up and down between the upper position shown in FIG. 6 (a) and the lower position shown in FIG. 6 (b), the first clamp 4 3 in the fuel hose 4 2 The part between the engine E and the engine E is twisted as shown by the arrow in FIG. 6 (b). Therefore, bending deformation of the fuel hose 42 due to the up and down swing of the power unit P can be avoided, and the strength of the fuel hose 42 with respect to torsion is higher than the strength with respect to bending, which can be improved more than the structure with bending deformation. Durability of the fuel hose 42. The second clamp 45 for holding the portion of the fuel hose 42 close to the engine E is fixed on the engine E side, and the fuel hose 4 is between the first and second clamps * 3, 4 5 2 is a curved arrangement toward the left and right direction of the vehicle body frame. Therefore, with the second clamp 45, the accuracy of the fuel hose 42 that is bent toward the left and right direction of the vehicle body frame 11 can be improved. The connection portion of the fuel hose 42 of the fuel injection valve 30 prevents a bending deformation of the fuel hose 42. -13- (10) 200406538 The first and second clamps 4 3, 4 5 are separately arranged on the left and right sides of the line BC, so the fuel hose 4 2 can be placed between the two clamps 43, 45 By setting the length to be long, the bending load applied to the fuel hose 42 can be suppressed on the ground, and the durability of the hose 42 can be improved. The above-mentioned fuel soft tube between the first and second clamps 4 3, 4 5 comes from which clamps 4 3, 4 5 are arranged to extend to the same side in the left-right direction of the frame 11, so The length of the fuel vehicle first and second clamps 4 3, 4 5 can be set longer than the fuel hose 4 2 can be set longer than the first and second clamps 4 3, 4 5 degrees , Can further improve the durability of the fuel hose 42. In addition, since the fuel hose 42 is a multi-layer high-pressure type, the strength of the large fuel hose 42 helps to improve the durability of the high-flow fuel hose 42. As mentioned above, although the embodiments of the present invention have been described, the present invention is limited to the above-mentioned embodiments, and various design changes can be made without departing from the scope of the patent application. [Effects of the Invention] According to the first invention described above, the power unit can be improved in assemblability of the power unit, and the upper and lower sides of the power unit P can be prevented from being deformed by bending and twisting, thereby improving fuel flexibility. With the second invention, it is possible to raise the first and the second toward the center of the vehicle body frame, and the fuel f 42 can be raised more accurately. The invention does not contain a compact, oscillating, durable, left-right side of the tube that can be piped. -14- (11) 200406538 Connection of the fuel hose to a curved fuel hose valve?妾 @ 形. Scoop h 'and to prevent the fuel hose from bending at the end of the fuel injection. According to the third invention, the length of the fuel hose between the first and second clamps can be set to be longer, thereby, W can more surely suppress the bending load applied to the fuel hose, and can further improve the durability of the fuel hose. According to the fourth invention, the length of the fuel hose between the first and second clamps can be set longer, and the durability of the fuel hose can be further improved. According to the fifth invention, the strength of the fuel hose can be increased, and the durability of the fuel hose used to conduct k partial pressure fuel can be improved. [Brief description of the drawings] Fig. 1 is a side view of a speed locomotive. Fig. 2 is a second end view of Fig. 1 in a state where the vehicle body shell is omitted. FIG. 3 is a 3-end view of FIG. 2. Brother 4 is an enlarged view of the main part of Brother 2. Fig. 5 is a partially cutaway side view of the fuel hose. Fig. 6 is an explanatory diagram of the operating state of the fuel hose in response to the swing of the power unit. [Illustration of drawing number] 1 1: Body frame 3 0: Fuel injection valve 3 2: Fuel tank -15- (12) (12) 200 406 538 4 1: Fuel hose 42: Fuel hose 43: First clamp 4 5: second clamp E: engine M: stepless transmission P: power unit WR: rear wheel