1334397 九、發明說明： 【發明所屬之技術領域】 :發明==輪或三輪機動車輛，其包括—車身 月架、一文裝於該車身骨架上之引擎單元及 身骨架上之座椅。 mm# 【先前技術】 在-些狀況下’為上車及下車時之較平穩效能之 二輪或三輪機動車輛在車輛後部且與供騎乘者用 之則座/刀開而設置供乘客用之後座。舉例而言，在專利文 獻1中，建議某一結構，其中藉由使前支柱與後支柱彼此 /刀開設置而在前支柱與後支柱之間產生一供腳部… 間’從而在車身骨架上之前後方向上支樓前座與後座。 [專利文獻 1 ]JP-A-Hei 4-358979 【發明内容】 [待由本發明解決之問題] —順便提及’習知二輪或三輪機動車輛已採用全部引擎單 兀位於後座下方之結構。因此’構成引擎單元之引擎體、 吸氣系統排氣H後輪驅動线及其類似物自乘客之 腳部附近至後座下方i 座下方之區域而集中起來。又，由於後座位 於與前座分開處’因而乘客之騎乘位置與正常位置相比位 於更靠後處。結果，重量集中於車輛之後部，從而產生重 量平衡在車輛之前後方向上惡化的問題。 馨於上述習知情況而完成本發明。本發明之一目的在於 提供二輪或三輪機動車輛，其具有前後方向上之優良重量 126883.doc -8 - 平衡同時保持-供乘客用之後座與__供騎乘者用之前座分 開而位於—車身後部的結構。 [解決問題之方法] 本發明針對—種包括―車身骨架、—安裝於該車身骨架 上之引擎單元及-安裝於該車身骨架上之座椅的二輪或三 輪機動車輛’其特徵在於：該錢包括—供騎乘者用之前 座及一與該前座分開位於後方之供乘客用之後座；且該引 擎單元安裝於該車身骨架上，其中該引擎單元之至少前部 位於供騎乘者用之左置腳部與右置腳部之間。 此處該引擎單元包括具有一汽缸體、一汽缸頭及一曲柄 軸箱之引擎體，以及連接至該引擎體之一吸氣系統之組 件。引擎單元之前部意謂該汽缸體、該汽缸頭以及該吸氣 系統之組件。 [本發明之效應] 根據本發明之二輪或三輪機動車輛，後座與前座分開向 後設置，且引擎單元安裝於車身骨架上，其中引擎單元之 至少一前部位於供騎乘者用之左置腳部與右置腳部之間。 因此’引擎單元之組件可自前座下方之區域至前座與後座 之間的區域而分散，從而與整個引擎單元安裝於後座下方 之狀況相比允許前後方向上之優良重量平衡。 【實施方式】 將在下文中參看所附圖式描述本發明之實施例。 圖1為說明根據本發明之第一實施例之二輪機動車輪的 視圖。本實施例中之前後方向及左右方向意謂如自處於就 126883.doc 座位置中之騎乘者觀察之前後方向及左右方向。 2圖式中，參考數字1指示二輪機動車輛，其包括一車 月架2 在固定狀態下安裝於該車身骨架2之引擎單元 」一安裝於該車身骨架2之供騎乘者用之前座4及一以預 定距離與該前座4分開向後方設置之供乘客用之後座5。 車身月架2包括一由鋼管製成之主骨架8及一與該主骨架 8整體形成之後骨架9❶主骨架8以前又部6可在左右方向上 移動之方式自支撐前叉部6之管7向後延伸，且後骨架9自 主骨架8持續向車輛後方延伸。 主骨架具有一自頭部管7以朝向車輛下方及後方之角度 延伸之傾斜部分8a及一以跟隨傾斜部分8&之角度向下延伸 之傾斜延伸部分8 b。 後骨架9具有一當向上直立時自傾斜延伸部分8b之後端 延伸之直立部分9a及一自該直立部分9a向後且大體水平延 伸之水平部分9b。 一前輪1〇可旋轉地支撐於前又部6之下端處，且轉向把 手11固疋於前又部ό之上端處。經由一托架7a將一電池12 設置於頭部管7前方。 引擎單元3包括一引擎體15、一吸氣系統16、一排氣系 統17及一引擎驅動系18。 引擎體15為一空氣冷卻4衝程引擎，其經由前後懸掛托 架13及14而在固定狀態下懸掛於主骨架$之下部區。 文裝引擎體1 5，其中汽缸轴線"a"在大體水平及前後方 向上延伸。引擎體15具有一結構’其中汽缸頭15b及一頭 126883.doc 1334397 蓋15c連接至汽虹體15a的前配合面且一曲柄軸箱15cj連接 至汽缸體1 5 a的後配合面》 在車輛寬度方向上將一曲柄軸15e安放於曲柄軸箱i5d 中。一傳動機構（未圖示）位於曲柄軸15e之後方且安放於曲 柄軸箱15d中。用以自傳動機構驅動出引擎功率之輸出轴 15f自曲柄轴箱i5d之左側壁在外部突出。 引擎驅動系18在車輛寬度方向上位於左側上。引擎驅動 系18具有一前邊緣經支撐用以藉由曲柄軸箱15(1上下擺動 之軸箱18a及一安放於該軸箱18a中之驅動軸（未圖示）。此 驅動轴之前邊緣連接至輸出軸15f，且後輪19連接至驅動 軸之後邊緣。 一後緩衝墊20安置於軸箱18a之後邊緣與後骨架9之一水 平部分9b之間。後緩衝墊20位於穿過後輪19之旋轉轴i9b 之中心的鉛垂線之前側處。 吸氣系統16連接於汽缸頭15b之連接（吸氣口）前方，且 自其向前及向上延伸。特定地，吸氣系統16具有：一吸氣 管16a，其連接至汽缸頭15b之上壁，自其向上延伸並向前 彎曲；一節氣閥體16b，其連接至該吸氣管16a之上游端開 口；及一淨氣機16c，其連接至該節氣閥體16b。淨氣機 16c位於節氣閥體16b上方，且位於主骨架8之傾斜部分“ 之前邊緣下方。 排氣系統17具有：一排氣管17a，其連接至汽缸頭15b之 底壁且當沿弓丨擎體之底部向後延伸時被定位；及一消音器 17b，其連接至排氣管17a之下游端且在車輛寬度方向上位 126883.doc 1334397 . 於後輪19之右侧上。 自車輛側面觀察，引擎體15之最高端處之頭蓋15c的上 端15c1經安裝以位於低於連接前輪1〇之上端i〇a與後輪19之 上端19a之線處。根據此實施例之二輪機動車輛1 ’前輪1〇 及後輪I9在車輪尺寸上大於用於小輪機車類型機器腳踏車 之正常車輪。 前座4位於主骨架8之傾斜部分8a上方，且安裝於固定於 φ 傾斜部分8a上之鋼管之一座椅支撐構件24a上。座椅支撐 構件24在車輛寬度方向上外部懸垂於傾斜部分8&處。座椅 支撐構件24具有以向後及向上角度延伸之左右支撐構件 24a與24a及一在車輛寬度方向上連接該等左右支撐構件 24a與24a之上端的橫向支撐構件24b。 前座4具有一緩衝墊4b位於一底板“上且由一外板覆蓋 之結構。經由一座椅鉸鏈4c將底板4a之後端支撐於橫向支 撐構件24b上用於上下柩軸移動。一行李掛鉤24c附著於橫 • 向支撐構件。行李掛鉤24c之下方為一如稍後所述用以裝 載行李之空間。 一燃料箱25安裝於主骨架8之傾斜部分“上。燃料箱。 位於座椅支撐構件24内部及前座4下方，且由前座4自上方 霞蓋。 一具有頂部開口之儲存箱26位於燃料箱25前方。一蓋構 件27固疋於則座4之底板鈍上，自前座*向前延伸，且用以 開啟並關閉儲存箱26。此蓋構件27可由-位於儲存箱26之 前端處的鎖定構件28鎖定。當鎖定釋放且接著前座4圍繞 126883.doc 12 :S : 其後端向上轉動時，儲存箱26之内部及燃料箱25之填料開 口暴露。儲存箱26可用以載運較小物品。可經由填料開口 執行向燃料箱25加注燃料。 —後座5位於後骨架9之一水平部分％上。後座$經由一固 =於水平部分9b上之金屬薄片撐條30而直接安裝於水平部 ^外上。後座5位於與座椅4幾乎等高之位置。特定地，後 月架9之水平部分9b之高度位置經設定以與前座4之底側幾 乎等高。座椅撐條30具有在車輛寬度方向上自水平部分％ 於外部延伸之矩形U形。 扶手桿31固定於水平部分处上，且延伸以圍繞後座5之 左、右及後侧。扶手桿31具有平面圖中所視之大體u形形 式。一支撐乘客之背部的靠背32附著於扶手桿3 i。 供騎乘者用之左右置腳部34與34位於前座4下方。左右 置腳34刀別經由一腳架（未圖示）而固定於引擎體η之曲 =軸箱15d的左右壁《每一置腳部34具有一自置腳部托架 突出之桿狀置腳部34a及一包含位於該置腳部34&上之彈性 構件之置腳部構件34b。 以此方式，對於引擎單元3，引擎體15位於左右置腳部 34與34之間，且吸氣系統16位於在左右置腳部“與“之間 所界定之區域前方。引擎驅動系18位於左右置腳部“與％ 之間及上方，且向後延伸。排氣系統17位於左右置腳部34 與3 4之間及下方，且向後延伸。 供乘客用之左右置腳部35與35位於主骨架8之傾斜延伸 部分8b與後骨架9之直立部分9a之間的邊界部分“中。 126883.doc 1334397 左右置腳部35位於高於供騎乘者用之左右置腳部34處。 每一置腳部35具有一固定於邊界部分2a之腳架35&及一包 含一彈性構件且位於一腳架35a上之踏板35b。左右踏板 35b經成形而如同在前後方向上延伸之矩形薄片，且此等 置腳部足夠大以供乘客搁置其整個腳部。 左右置腳部35位於引擎單元3之引擎體15後方，亦位於 軸箱18a及消音器17b上方，且位於引擎單元3之最高端（吸 氣系統）下方。1334397 IX. Description of the invention: [Technical field to which the invention pertains]: Invention == Wheel or three-wheeled motor vehicle, which includes a body frame, an engine unit mounted on the body frame, and a seat on the body frame. Mm# [Prior Art] In some cases, the two-wheeled or three-wheeled vehicle with a smoother performance for getting in and out of the vehicle is at the rear of the vehicle and is provided for passengers with the seat/knife for the rider. seat. For example, in Patent Document 1, a structure is proposed in which a foot portion is formed between the front pillar and the rear pillar by causing the front pillar and the rear pillar to be disposed/knife apart from each other. In front and rear, the front and rear seats of the branch are in the direction. [Patent Document 1] JP-A-Hei 4-358979 [Disclosure] [The problem to be solved by the present invention] - Incidentally, the conventional two- or three-wheeled vehicle has adopted a structure in which all of the engine units are located under the rear seat. Therefore, the engine body constituting the engine unit, the intake system exhaust H rear wheel drive line, and the like are concentrated from the vicinity of the passenger's foot to the area below the rear seat. Also, since the rear seat is separated from the front seat, the riding position of the passenger is located further rearward than the normal position. As a result, the weight is concentrated at the rear of the vehicle, thereby causing a problem that the weight balance is deteriorated in the front and rear directions of the vehicle. The present invention has been completed in the above-mentioned conventional circumstances. One of the objects of the present invention is to provide a two- or three-wheeled motor vehicle having an excellent weight in the front-rear direction 126883.doc -8 - balance while maintaining - for the passenger to use the rear seat and the __ for the rider to be separated by the front seat - The structure of the rear of the car body. [Means for Solving the Problems] The present invention is directed to a two- or three-wheeled motor vehicle including a "body frame, an engine unit mounted on the body frame, and a seat mounted on the body frame", characterized in that: Included - a seat for the rider and a rear seat for the passenger separated from the front seat; and the engine unit is mounted on the body frame, wherein at least the front portion of the engine unit is for the rider Between the left foot and the right foot. Here, the engine unit includes an engine body having a cylinder block, a cylinder head and a crank axle box, and a component connected to an air suction system of the engine body. The front of the engine unit means the cylinder block, the cylinder head and the components of the suction system. [Effects of the Invention] According to the two- or three-wheeled motor vehicle of the present invention, the rear seat and the front seat are disposed rearwardly apart, and the engine unit is mounted on the body frame, wherein at least one front portion of the engine unit is located on the left side for the rider Between the foot and the right foot. Therefore, the components of the engine unit can be dispersed from the area under the front seat to the area between the front seat and the rear seat, thereby allowing an excellent weight balance in the front-rear direction as compared with the case where the entire engine unit is mounted under the rear seat. [Embodiment] Embodiments of the present invention will be described hereinafter with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a view showing a two-wheeled motor vehicle wheel according to a first embodiment of the present invention. In the present embodiment, the front and rear directions and the left and right directions mean that the rider observes the front and rear directions and the left and right directions from the rider in the position of 126883.doc. In the drawings, reference numeral 1 denotes a two-wheeled motor vehicle, which includes an engine unit mounted on the body frame 2 in a fixed state, and a front seat for the rider mounted on the body frame 2 And a passenger rear seat 5 disposed at a predetermined distance apart from the front seat 4 to the rear. The body frame 2 includes a main frame 8 made of a steel pipe and a pipe 7 which is formed integrally with the main frame 8 and then the main frame 8 is supported by the main frame 8 and the front portion 6 is movable in the left-right direction. Extending backwards, and the rear skeleton 9 autonomous skeleton 8 continues to extend toward the rear of the vehicle. The main skeleton has an inclined portion 8a extending from the head pipe 7 at an angle toward the lower side and the rear of the vehicle, and an inclined extending portion 8b extending downward at an angle following the inclined portion 8&; The rear bobbin 9 has an upright portion 9a extending from the rear end of the inclined extension portion 8b when standing upright, and a horizontal portion 9b extending rearward from the upright portion 9a and extending substantially horizontally. A front wheel 1 is rotatably supported at the lower end of the front portion 6, and the steering handle 11 is fixed to the upper end of the front and rear portions. A battery 12 is placed in front of the head tube 7 via a bracket 7a. The engine unit 3 includes an engine block 15, an air intake system 16, an exhaust system 17, and an engine drive train 18. The engine body 15 is an air-cooled 4-stroke engine that is suspended in a fixed state under the main frame $ via the front and rear suspension brackets 13 and 14. The article engine body 15 is 5, wherein the cylinder axis "a" extends upward in the general horizontal and front and rear directions. The engine body 15 has a structure in which a cylinder head 15b and a head 126883.doc 1334397 cover 15c are connected to the front mating face of the cylinder body 15a and a crank axle box 15cj is coupled to the rear mating face of the cylinder block 15 a" at the vehicle width A crankshaft 15e is placed in the crankcase i5d in the direction. A transmission mechanism (not shown) is located behind the crankshaft 15e and is placed in the crankcase 15d. An output shaft 15f for driving the engine power from the transmission mechanism protrudes from the left side wall of the crankcase i5d. The engine drive train 18 is located on the left side in the vehicle width direction. The engine drive system 18 has a front edge supported by a crankcase 15 (1 shaft swinging up and down the axle box 18a and a drive shaft (not shown) placed in the axle box 18a. The front edge of the drive shaft is connected To the output shaft 15f, and the rear wheel 19 is connected to the rear edge of the drive shaft. A rear cushion 20 is disposed between the rear edge of the axle box 18a and one of the horizontal portions 9b of the rear frame 9. The rear cushion 20 is located through the rear wheel 19. The front side of the vertical line of the center of the rotating shaft i9b. The suction system 16 is connected in front of the connection (suction port) of the cylinder head 15b and extends forward and upward therefrom. Specifically, the suction system 16 has: a suction a gas pipe 16a connected to the upper wall of the cylinder head 15b, extending upward therefrom and bent forward; a gas valve body 16b connected to the upstream end opening of the suction pipe 16a; and a gas purifier 16c, Connected to the throttle body 16b. The air purifier 16c is located above the throttle body 16b and is located below the front edge of the inclined portion of the main frame 8. The exhaust system 17 has: an exhaust pipe 17a connected to the cylinder head 15b The bottom wall and the rearward extension along the bottom of the bow body Positioned while extending; and a silencer 17b connected to the downstream end of the exhaust pipe 17a and positioned 126883.doc 1334397 in the vehicle width direction. On the right side of the rear wheel 19. The engine body 15 is viewed from the side of the vehicle. The upper end 15c1 of the head cover 15c at the highest end is mounted at a line lower than the upper end i〇a of the front wheel 1〇 and the upper end 19a of the rear wheel 19. The second motor vehicle 1' front wheel 1 and rear according to this embodiment The wheel I9 is larger in wheel size than the normal wheel for the small-turbine type machine bicycle. The front seat 4 is located above the inclined portion 8a of the main frame 8, and is mounted on one of the steel pipe seat members 24a fixed to the φ inclined portion 8a. The seat support member 24 is externally suspended from the inclined portion 8& in the vehicle width direction. The seat support member 24 has left and right support members 24a and 24a extending rearwardly and upwardly, and a connection in the vehicle width direction. a lateral support member 24b at the upper ends of the left and right support members 24a and 24a. The front seat 4 has a structure in which a cushion 4b is "on and covered by an outer panel. The bottom plate 4a is passed through a seat hinge 4c. The rear end is supported on the lateral support member 24b for up-and-down shaft movement. A luggage hook 24c is attached to the lateral support member. Below the luggage hook 24c is a space for loading luggage as will be described later. 25 is mounted on the inclined portion of the main frame 8. The fuel tank is located inside the seat support member 24 and below the front seat 4, and is covered by the front seat 4 from above. A storage box 26 having a top opening is located in front of the fuel tank 25. A cover member 27 is fixed to the bottom of the seat 4 and is bluntly extended from the front seat * and is used to open and close the storage bin 26. The cover member 27 can be locked by a locking member 28 located at the front end of the storage bin 26. . When the lock is released and then the front seat 4 is rotated around 126883.doc 12 :S : its rear end is upward, the inside of the storage tank 26 and the filler opening of the fuel tank 25 are exposed. The storage bin 26 can be used to carry smaller items. Fueling the fuel tank 25 may be performed via a packing opening. The rear seat 5 is located on the horizontal portion % of one of the rear skeletons 9. The rear seat $ is directly attached to the outside of the horizontal portion via a foil stay 30 on the horizontal portion 9b. The rear seat 5 is located at almost the same height as the seat 4. Specifically, the height position of the horizontal portion 9b of the rear frame 9 is set to be almost equal to the bottom side of the front seat 4. The seat stay 30 has a rectangular U shape extending from the horizontal portion to the outside in the vehicle width direction. The grab bar 31 is fixed to the horizontal portion and extends to surround the left, right and rear sides of the rear seat 5. The grab bar 31 has a generally U-shaped view as viewed in plan view. A backrest 32 supporting the back of the passenger is attached to the grab bar 3i. The left and right foot portions 34 and 34 for the rider are located below the front seat 4. The left and right legs 34 are fixed to the left and right walls of the axle box 15d via a tripod (not shown). The footrests of each of the legs 34 have a self-supporting bracket. The leg portion 34a and a leg member 34b including an elastic member located on the leg portion 34& In this manner, with respect to the engine unit 3, the engine body 15 is located between the left and right leg portions 34 and 34, and the suction system 16 is located in front of the region defined between the left and right foot portions "and". The engine drive system 18 is located between the left and right leg portions "between and above, and extends rearward. The exhaust system 17 is located between and below the left and right leg portions 34 and 34, and extends rearward. For the passengers to use the left and right feet The portions 35 and 35 are located in the boundary portion between the inclined extending portion 8b of the main bobbin 8 and the upright portion 9a of the rear bobbin 9. 126883.doc 1334397 The left and right foot portions 35 are located above the left and right foot portions 34 for the rider. Each of the leg portions 35 has a stand 35& fixed to the boundary portion 2a and a pedal 35b including an elastic member and located on the stand 35a. The left and right pedals 35b are shaped like rectangular sheets extending in the front-rear direction, and the legs are large enough for the passenger to rest their entire feet. The left and right leg portions 35 are located behind the engine body 15 of the engine unit 3, also above the axle box 18a and the muffler 17b, and are located below the highest end of the engine unit 3 (suction system).
此處’儘管未在圖式中展示，但置放—車身外罩以覆蓋 車身骨架2之前座及後座5下方之區域以及引擎單元3之左 右側。建立一由前座4與後座5之間的車身外罩界定之騎乘 空間，其為空間c。該空間c自後座5之底部邊緣下方向下 沈陷，且形成通過車輛寬度方向。空間以立於建立於前座4 前方之一沈陷部分c’下方。 在此實施例中，後座5與前座4分開設置於後方，且引擎Here, although not shown in the drawings, the body cover is placed to cover the area of the front and rear seats 5 of the body frame 2 and the left and right sides of the engine unit 3. A ride space defined by the body cover between the front seat 4 and the rear seat 5 is created as a space c. This space c sinks downward from the bottom edge of the rear seat 5 and is formed through the vehicle width direction. The space stands below the sinking portion c' which is established in front of the front seat 4. In this embodiment, the rear seat 5 and the front seat 4 are disposed separately from the rear, and the engine
單元3安裝於引擎體15之前部到達之供騎乘者用之左右置 腳部34與34之間處。因此，為引擎單元3之組件的引擎體 15及吸氣系統16可設置為分散於前座4與後座5之間。以此 方式，可廣泛保留供乘客用之腳部的空間，因此可改良載 運容量以及上車與下車能力。 义 引擎單元3之前部位於前座4下方，且因此當引擎單元: 被視作整體時引擎單元3之組件可設置為在前後方向上= 散於車身骨架2上。與引擎單元集中於後座下方之二二 比，其允許車輛在前後方向上之較優良重量平衡，且改 126883.doc 14 1334397 了駕駛性能。 在此實施例中’車身骨架2之主骨架8係設置於如同其自 引擎單元3上方向後延伸。換言之，引擎單元3安裝於主骨 架8之下’且因此可將車身之質量中心設定得較低，從1 允許進一步改良駕駛性能。 在此實施例中，前座4安裝於具有較強剛性之主骨架8之 傾斜部分8a上，因此可保留前座4之支撐剛性。 將在前座4之安裝部分前方進一步向後延伸之傾斜延伸 部提供至主骨架8之傾斜部分8a。因此具有對地面較 低高度且供乘客上車及下車之空間c可建立於前座*與後座 5之間。 在此實施例中，前座4經由向上延伸之座椅支撐構件24 而安裝至主骨架8之傾斜部分8a。因此，可使用建立於前座 4之下侧與傾斜部分8a之間的空間來有效放置燃料箱25。 又，可使用建立於前座4之前方與傾斜部分8&之間的空 間來有效放置儲存箱26。 在此實施例中，車身骨架2具有以在主骨架8之後持續之 角度向後及向上延伸之後骨架9,且後座5安裝於後骨架9 上。因此具有較強剛性之後骨架9可支撐後座5。詳言之， 車身骨架2具有自主骨架8之傾斜延伸部分朴向上直立之直 立部分9a以及在直立部分9a之後持續水平延伸之水平部分 9b。後座5直接安裝於在直立部分9a之後持續水平延伸之 水平部分9b上。因此，可在不使用特定增強結構之情況下 支撐後座5。The unit 3 is mounted between the left and right leg portions 34 and 34 for the rider to reach the front of the engine body 15. Therefore, the engine body 15 and the suction system 16 which are components of the engine unit 3 can be disposed to be dispersed between the front seat 4 and the rear seat 5. In this way, the space for the passenger's foot can be widely reserved, thereby improving the carrying capacity and the ability to get on and off the vehicle. The front portion of the engine unit 3 is located below the front seat 4, and thus the components of the engine unit 3 can be arranged to be scattered on the body frame 2 in the front-rear direction when the engine unit: is considered as a whole. The engine unit is concentrated in the second to second ratio below the rear seat, which allows the vehicle to have a better weight balance in the fore and aft direction, and the driving performance is changed to 126883.doc 14 1334397. In this embodiment, the main skeleton 8 of the body frame 2 is disposed as it extends rearward from the engine unit 3. In other words, the engine unit 3 is mounted below the main frame 8 and thus the center of mass of the body can be set lower, allowing further improvement in drivability from 1 . In this embodiment, the front seat 4 is attached to the inclined portion 8a of the main frame 8 having a relatively high rigidity, so that the supporting rigidity of the front seat 4 can be retained. An inclined extension extending further forward in front of the mounting portion of the front seat 4 is provided to the inclined portion 8a of the main frame 8. Therefore, a space c having a lower height to the ground and for passengers to get on and off the vehicle can be established between the front seat* and the rear seat 5. In this embodiment, the front seat 4 is attached to the inclined portion 8a of the main frame 8 via the upwardly extending seat support member 24. Therefore, the space created between the lower side of the front seat 4 and the inclined portion 8a can be used to effectively place the fuel tank 25. Further, the storage box 26 can be effectively placed using the space established between the front side of the front seat 4 and the inclined portion 8 & In this embodiment, the body frame 2 has the skeleton 9 extending rearward and upward at an angle continuing after the main frame 8, and the rear seat 5 is mounted on the rear frame 9. Therefore, the skeleton 9 can support the rear seat 5 after having a relatively high rigidity. In detail, the body frame 2 has an upright portion 9a in which the inclined extension portion of the autonomous skeleton 8 is upright and a horizontal portion 9b which continues to horizontally extend after the upright portion 9a. The rear seat 5 is directly mounted on the horizontal portion 9b which continues to horizontally extend after the upright portion 9a. Therefore, the rear seat 5 can be supported without using a specific reinforcing structure.
126883.doc ; S 1334397 • 在此實施例中，當自車輛侧面觀察時，左右置腳部35與 35位於引擎單元3上方，且因此來自弓丨擎單^之熱量不易 傳輸至乘客。結果，與將置腳部安置於引擎單元之左右側 的狀況相比，可改良騎乘感及舒適性。 引擎單元3之吸氣系統16位於供騎乘者用之左右置腳部 34與34之間的區域前方。因此，可使用引擎體前方的空間 來有效放置吸氣系統，且同時可防止由來自引擎體15之熱 $ 量引起的效應。 在八缸軸線"a"大體水平指向時安裝引擎體丨5。引擎體 15之最高端處之頭蓋15c的上端15c，位於低於連接前輪丨^之 上端10a與後輪19之上端19a之連接線"b"處◊因此，可將 車身之質量中心設定得較低，且同時可避免來自引擎體15 及排氣系統17之熱量傳導至騎乘者及乘客。 因為前輪10及後輪19之車輪尺寸變得較大，所以亦可改 良運行穩定性。 Φ 此處在此實施例中’前輪10之上端10a與後輪19之上端 19a等高’換言之其車輪尺寸相同。然而本發明亦可應用 於前輪與後輪之尺寸不同之狀況：例如後輪尺寸小於前輪 尺寸之狀況，或相反地前輪尺寸小於後輪尺寸之狀況。即 - 使前後輪之尺寸不同，亦可藉由在引擎體之上端位於低於 連接則後輪之上端之連接線處時來安裝引擎體而獲得相同 效應。本發明亦可應用於在引擎體之上端位於低於前後輪 之上端中之任一較高者處時來安裝引擎體之狀況。 已基於二輪機動車輛解釋了上述實施例，但本發明亦可 126883.doc -16· 1334397 應用於三輪機動車輛。在此狀況下，車輛可藉由左右橫向 配置後座或配置長凳式後座來載運兩名乘客。 圖2及圖3說明根據本發明之第二實施例之三輪機動車 輛。在圖式中’與圖i中之參考數字相同的參考數字指示 相同部分或等效部分。 本實施例中之二輪機動車輛包括一車身骨架2、一安裝 於該車身月架2用於上下樞軸運動之引擎單元4〇、一安裝 於該車身骨架2上之供騎乘者用之前座4及一以預定距離與 該前座4分開向後方設置之供乘客用之後座$。 車身骨架2具有一主骨架8及一自該主骨架8持續且向後 延伸之後骨架9。此等組件之基本機構與第一實施例幾乎 相同，因此以下主要關於不同結構進行解釋。 引擎單元40為單元擺動類型四衝程引擎，其具有一結 構’其中引擎體40a之一曲柄軸箱4〇b整體地連接至一安放 一帶式連續可變傳動機構41之變速箱40c且一後輪19由該 變速钿40c可旋轉地支撐 '一位於變速箱4〇〇與後骨架9之 一水平部分9b之間的後緩衝墊20,大體位於穿過後輪19之旋 轉軸19b的鉛垂線後方。 帶式連續可變傳動機構41具有以下結構，其中：一附著 於一曲柄軸15e的主動皮帶盤41a與一附著於經由對軸42連 接至後輪19之旋轉軸19b之從動軸41b的從動皮帶盤41C由 一 V形帶41d連接。 一向前延伸之擺動托架40d形成於曲柄轴箱40b之前端 處。擺動托架40d經由一樞軸38而由左右懸掛托架39與39 126883.doc 17 1334397 可旋轉地支撐’該等懸掛托架39及39固定於主骨架8之一 傾斜部分8a且自該傾斜部分8a延伸至底部。此結構支撐引 擎體40a用於其圍繞樞軸38之上下樞轴運動。引擎體4〇a之 擺動支撐部分可位於曲柄軸箱40b上方。 一向前延伸之吸氣系統16連接至引擎體4〇a。吸氣系統 16之一淨氣機16c位於並固定於引擎體4〇a前方。淨氣機 16c與一節氣閥體16b經由一吸收引擎體4〇a之上下運動的 伸縮式吸氣管16d而連接》 一燃料箱25安裝於主骨架8之傾斜部分8&上。前座4直接 女裝於燃料箱25上。燃料箱25之一染料入口 25a位於前座4 前方。一控制單元44懸掛於傾斜部分8&之下。 二輪機動車輛1由一車身外罩包圍。該車身外罩主要包 括.一把手外罩50，其用以包圍轉向把手η之外部丨一前 外罩51，其用以覆蓋前又部6之前側；左右前側外罩52與 52，其用以覆蓋前座4下方至燃料箱25且至引擎單元3之前 部的左右側之包括主骨架8之區域；及左右後側外罩53， 其用以覆蓋後座5下方至後骨架9之左右側的區域。該車身 外罩之結構與根據第一實施例之二輪機動車輛中之結構大 體相同。 左右懸掛托架39向下延伸以覆蓋淨氣機16c，且懸掛托 架39之下端位於淨氣機i6c之下端下方。 腳架55螺栓連接至左右懸掛托架之下端其中腳架在 車輛寬度方向上在外部突出。腳架55具有在前後方向上延 伸之左右腳部分55 a與55a以及一連接該等左右腳部分55a 126883.doc •18· 1334397 之兩個前邊緣的前接合部分55b。腳架55在平面圖中為e 形。電池12安裴於前接合部分55be 在前後方向上延伸之供騎乘者用之置腳部52a當其覆蓋 左右腳部分55a之頂面時以階梯形在外部形成於左右前側 外罩52上。引擎單元3之吸氣系統16及引擎體4〇a之前部位 於左右置腳部52a之間。 左右串列托架57與57連接於車身骨架2之邊框部分& 鲁 處。在前後方向上延伸之左右腳架56與56螺栓連接至左右 串列托架57 »左右腳架56與56在車輛寬度方向上於外部突 出。左右腳架56位於引擎體4〇3上方。 在前後方向上延伸以覆蓋腳架56之頂面的供乘客用之置 腳部53a以階梯形在外部形成於左右後侧外罩53中之每一 者上。 在此實施例中，單元擺動類型引擎單元4〇經安裝用以將 其前部設置於左右置腳部52a與52a之間。因此引擎單元 • <組件可經設置以自前座4之下至後座5之下分散於前後方 向上，因此可保留較大空間供乘客腳部使用。引擎單元切 位於車身骨架2上以分散於前後方向上。因此車耗在前後 彳向上之重量平衡可為優良的，且可獲得與第—實施例中 之效應相同的效應。 圖4為說明根據本發明中之第三實施例之機器腳踏車的 ，圖。在該圖中，與圖i及圖2中之參考數字相同的參考數 字指示相同部分或等效部分。 在此實施例中，二輪機動車輛1包括：一車身骨架60、 126883.doc 1334397 一在固定狀態下安裝於該車身骨架6〇上之引擎單元3、一 安裝於該車身骨架60上之供騎乘者用之前座4以及一以預 定距離與該前座4分開向後方設置供乘客用之後座5。該基 本結構與第一及第二實施例中之結構幾乎相同。因此以下 對不同結構進行解釋β 車身骨架60具有一主骨架61及一獨立於該主骨架6ι而形 成之後骨架62。主骨架61與後骨架62由一形成車身骨架之 一部分的引擎體15連接。 特定地，主骨架61之一傾斜延伸部分61b與引擎體15之 曲柄軸箱15d之上壁藉由螺栓拉緊經由一主托架63而連 接。後骨架62之一直立部分62a與一曲柄轴箱15d之後壁藉 由螺栓拉緊經由一後托架64而連接。 鋼管之左右座椅支撐構件65與65位於主骨架61之一傾斜 部分61a上方。該等左右座椅支撐構件65中之每一者固定 於一主托架63。座椅支撐構件65具有：一後傾斜部分 65a，其以一角度向後及向上延伸；及一直線部分65b，其 在該後傾斜部分65之上端處彎曲接著幾乎筆直向前延伸接 著固定於一頭部管7»經由一托架7a將一控制單元44設置 於頭部管7前方。沿傾斜部分65a設置一電池丨2。 前座4經由一座椅托架66安裝於左右直線部分65b之後端 上。前座4經設置以自座椅支撐構件65之後端向後突出。 一燃料箱25在左右直線部分65b上安裝於前座4前方。燃 料箱25係設置為其下半部位於直線部分65b下方且其上半 部位於直線部分65b上方。126883.doc; S 1334397 • In this embodiment, the left and right leg portions 35 and 35 are located above the engine unit 3 when viewed from the side of the vehicle, and thus the heat from the bow engine unit is not easily transmitted to the passenger. As a result, the riding feeling and the comfort can be improved as compared with the case where the leg portions are placed on the right and left sides of the engine unit. The suction system 16 of the engine unit 3 is located in front of the area between the left and right leg portions 34 and 34 for the rider. Therefore, the space in front of the engine body can be used to effectively place the suction system while preventing the effect caused by the amount of heat from the engine body 15. Install the engine body 5 when the eight-cylinder axis "a" is generally horizontally pointed. The upper end 15c of the head cover 15c at the highest end of the engine body 15 is located below the connecting line connecting the upper end 10a of the front wheel rim and the upper end 19a of the rear wheel 19, so that the center of mass of the body can be set. Lower, and at the same time, heat from the engine block 15 and the exhaust system 17 can be prevented from being transmitted to the rider and passengers. Since the wheel sizes of the front wheel 10 and the rear wheel 19 become larger, the operational stability can be improved. Φ Here, in this embodiment, the upper end 10a of the front wheel 10 is equal to the upper end 19a of the rear wheel 19, in other words, its wheel size is the same. However, the present invention is also applicable to the case where the sizes of the front and rear wheels are different: for example, the case where the rear wheel size is smaller than the front wheel size, or conversely the case where the front wheel size is smaller than the rear wheel size. That is, the front and rear wheels are different in size, and the same effect can be obtained by mounting the engine body when the upper end of the engine body is located below the connecting line connecting the upper end of the rear wheel. The present invention can also be applied to the case where the engine body is mounted when the upper end of the engine body is located lower than any of the upper ends of the front and rear wheels. The above embodiment has been explained based on a two-wheeled motor vehicle, but the present invention is also applicable to a three-wheeled motor vehicle 126883.doc -16· 1334397. In this case, the vehicle can carry two passengers by arranging the rear seats laterally or laterally or by configuring a bench-type rear seat. 2 and 3 illustrate a three-wheeled motor vehicle according to a second embodiment of the present invention. In the drawings, the same reference numerals are used to refer to the same or equivalent parts. The two-wheeled motor vehicle in this embodiment includes a body frame 2, an engine unit 4A mounted on the body frame 2 for pivoting up and down, and a front seat for the rider mounted on the body frame 2. 4 and a rear seat for the passenger to be disposed at a predetermined distance apart from the front seat 4 to the rear. The body frame 2 has a main frame 8 and a frame 9 extending from the main frame 8 and extending rearward. The basic mechanism of these components is almost the same as that of the first embodiment, so the following mainly explains about different structures. The engine unit 40 is a unit swing type four-stroke engine having a structure in which one crankcase 4〇b of the engine body 40a is integrally coupled to a gearbox 40c and a rear wheel that houses a belt-type continuously variable transmission 41 The rear cushion cushion 20, which is rotatably supported by the shifting jaw 40c, between the gearbox 4 and the horizontal portion 9b of the rear frame 9, is located substantially behind the vertical line passing through the rotary shaft 19b of the rear wheel 19. The belt type continuously variable transmission mechanism 41 has a structure in which a driving belt pulley 41a attached to a crank shaft 15e and a slave shaft 41b attached to a rotating shaft 41b connected to a rotating shaft 19b of the rear wheel 19 via a pair of shafts 42 are provided. The moving belt pulley 41C is connected by a V-belt 41d. A forwardly extending swing bracket 40d is formed at the front end of the crankcase 40b. The swing bracket 40d is rotatably supported by left and right suspension brackets 39 and 39 126883.doc 17 1334397 via a pivot 38. The suspension brackets 39 and 39 are fixed to and inclined from one of the inclined portions 8a of the main frame 8. Portion 8a extends to the bottom. This structure supports the engine body 40a for pivotal movement about its pivot axis 38. The swing support portion of the engine body 4A may be located above the crankcase 40b. A forwardly extending suction system 16 is coupled to the engine block 4A. The air purifier 16c of the air suction system 16 is located and fixed in front of the engine body 4A. The air purifier 16c is connected to the air valve body 16b via a telescopic suction pipe 16d that moves up and down the engine body 4A. A fuel tank 25 is attached to the inclined portion 8& of the main frame 8. The front seat 4 is directly worn on the fuel tank 25. One of the dye inlets 25a of the fuel tank 25 is located in front of the front seat 4. A control unit 44 is suspended below the inclined portion 8 & The two-wheeled motor vehicle 1 is surrounded by a body cover. The body cover mainly comprises a handle cover 50 for surrounding the outer front cover 51 of the steering handle n for covering the front side of the front portion 6 and left and right front side covers 52 and 52 for covering the front seat 4 A region including the main skeleton 8 to the fuel tank 25 and to the left and right sides of the front portion of the engine unit 3, and left and right rear side outer covers 53 for covering the region of the rear seat 5 to the left and right sides of the rear frame 9. The structure of the body cover is substantially the same as that of the two-wheeled motor vehicle according to the first embodiment. The left and right suspension brackets 39 extend downward to cover the air purifier 16c, and the lower end of the suspension bracket 39 is located below the lower end of the air purifier i6c. The stand 55 is bolted to the lower end of the left and right suspension brackets, wherein the stand protrudes outward in the vehicle width direction. The stand 55 has left and right leg portions 55a and 55a extending in the front-rear direction and a front engaging portion 55b connecting the two front edges of the left and right leg portions 55a 126883.doc • 18· 1334397. The stand 55 is e-shaped in plan view. The battery pack 12 is mounted on the left and right front side outer covers 52 in a stepped shape when it covers the top surface of the left and right leg portions 55a in the front-rear direction. The air intake system 16 of the engine unit 3 and the front portion of the engine body 4A are located between the right and left leg portions 52a. The left and right tandem brackets 57 and 57 are connected to the frame portion & The left and right legs 56 and 56 extending in the front-rear direction are bolted to the left and right tandem brackets 57. The left and right legs 56 and 56 protrude outward in the vehicle width direction. The left and right legs 56 are located above the engine body 4〇3. A passenger foot portion 53a extending in the front-rear direction to cover the top surface of the stand 56 is formed in a stepped shape on each of the left and right rear side outer covers 53. In this embodiment, the unit swing type engine unit 4 is mounted to set its front portion between the left and right leg portions 52a and 52a. Therefore, the engine unit < component can be arranged to be dispersed in the front and rear from under the front seat 4 to the rear seat 5, so that a large space can be reserved for the passenger's foot. The engine unit is cut into the body frame 2 to be dispersed in the front-rear direction. Therefore, the weight balance of the vehicle in the forward and backward directions can be excellent, and the same effects as those in the first embodiment can be obtained. Fig. 4 is a view showing a bicycle of a bicycle according to a third embodiment of the present invention. In the figure, the same reference numerals as in the reference numerals in FIGS. 1 and 2 denote the same parts or equivalent parts. In this embodiment, the two-wheeled motor vehicle 1 includes: a body frame 60, 126883.doc 1334397, an engine unit 3 mounted on the body frame 6〇 in a fixed state, and a rider mounted on the body frame 60. The passenger uses the front seat 4 and a rear seat 5 for the passenger to be separated rearward from the front seat 4 by a predetermined distance. This basic structure is almost the same as that in the first and second embodiments. Therefore, the following explanation is made for the different structures. The body frame 60 has a main frame 61 and a frame 62 is formed independently of the main frame 6i. The main frame 61 and the rear frame 62 are connected by an engine body 15 which forms a part of the body frame. Specifically, one of the inclined extension portions 61b of the main skeleton 61 and the upper wall of the crankcase 15d of the engine body 15 are connected by a main bracket 63 by bolt tightening. The upright portion 62a of the rear bobbin 62 and the rear wall of a crankcase 15d are connected by a bolt to be tightened via a rear bracket 64. The left and right seat supporting members 65 and 65 of the steel pipe are located above one of the inclined portions 61a of the main frame 61. Each of the left and right seat support members 65 is fixed to a main bracket 63. The seat support member 65 has a rear inclined portion 65a that extends rearward and upward at an angle, and a straight portion 65b that is bent at the upper end of the rear inclined portion 65 and then extends almost straight forward and then fixed to a head. The tube 7» places a control unit 44 in front of the head tube 7 via a bracket 7a. A battery cartridge 2 is disposed along the inclined portion 65a. The front seat 4 is attached to the rear end of the right and left straight portions 65b via a seat bracket 66. The front seat 4 is configured to protrude rearward from the rear end of the seat support member 65. A fuel tank 25 is attached to the front of the front seat 4 on the right and left straight portions 65b. The fuel tank 25 is disposed such that its lower half is located below the straight portion 65b and its upper half is located above the straight portion 65b.
·. S 126883.doc •20- 且在左右前側外罩52中之每一者上，在前後方向上延伸 之一供騎乘者用之置腳部52a以階梯形形成於車輛外部。 引擎體15位於左右置腳部52a之間。 在左右後侧外罩53中之每一者上，在前後方向上延伸之 —供乘客用之置腳部53a以階梯形形成於車輛外部。左右 置腳部53a位於引擎單元3上方。 根據此實施例’在引擎體i 5位於供騎乘者用之左右置腳 部52a與52a之間時安裝在固定狀態下安裝於主骨架61上之 引擎單元3。因此引擎單元3之組件可設置為以自前座4之 下至後座4之下分散於前後方向上，可保留較大空間供乘 客腳部使用，車身在前後方向上之重量平衡可為優良的， 且可獲得與第一實施例中之效應相同的效應。 【圖式簡單說明】 圖1為說明根據本發明之第一實施例之機器腳踏車的侧 視圖。 圖2為根據本發明之第二實施例之機器腳踏車的側視 圖。 圖3為機器腳踏車之俯視圖。 圖4為根據本發明之第三實施例之機器腳踏車的側視 圖。 【主要元件符號說明】 1 機器腳踏車 2、60 車身骨架 3 引擎單元 126883.doc -21- 1334397Further, in each of the left and right front side covers 52, one of the leg portions 52a for the rider extending in the front-rear direction is formed in a stepped shape on the outside of the vehicle. The engine body 15 is located between the left and right leg portions 52a. On each of the right and left rear side covers 53, a leg portion 53a for passengers extending in the front-rear direction is formed in a stepped shape on the outside of the vehicle. The left and right leg portions 53a are located above the engine unit 3. According to this embodiment, the engine unit 3 attached to the main frame 61 in a fixed state is mounted when the engine body i 5 is positioned between the right and left leg portions 52a and 52a for the rider. Therefore, the components of the engine unit 3 can be arranged to be dispersed in the front-rear direction from below the front seat 4 to below the rear seat 4, and a large space can be reserved for the passenger's foot. The weight balance of the vehicle body in the front-rear direction can be excellent. And the same effect as that in the first embodiment can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side elevational view showing a motorcycle according to a first embodiment of the present invention. Fig. 2 is a side elevational view of a bicycle according to a second embodiment of the present invention. Figure 3 is a top view of the bicycle. Figure 4 is a side elevational view of a bicycle according to a third embodiment of the present invention. [Main component symbol description] 1 Machine bicycle 2, 60 body frame 3 Engine unit 126883.doc -21- 1334397
4 供騎乘者用之前座 5 供乘客用之後座 6 前又部 7 頭部管 8、61 主骨架 8a ' 61a 傾斜部分 8b 、 61b 傾斜延伸部分 9、62 後骨架 10 前輪 10a 上端 15 、 40a 引擎體 15c- 頭蓋之上端（引擎體之最高端） 15d > 40b 曲柄軸箱 16 吸氣系統 17 排氣系統 18 引擎驅動系 19 後輪 19a 上端 25 燃料箱 34 、 52a 供騎乘者用之置腳部 35 ' 53a 供乘客用之置腳部 40 單元擺動類型引擎單元 a 汽缸軸線 b 連接線 126883.doc •22-4 For the rider, the front seat 5 for the passengers, the rear seat 6, the front part, the other part, the head tube 8, 61, the main frame 8a' 61a, the inclined portion 8b, 61b, the inclined extension portion 9, 62, the rear frame 10, the front end 10a, the upper end 15, 40a Engine body 15c- upper end of head cover (highest end of engine body) 15d > 40b crankcase 16 suction system 17 exhaust system 18 engine drive system 19 rear wheel 19a upper end 25 fuel tank 34, 52a for riders Footrest 35 ' 53a For the passenger's foot 40 Unit swing type Engine unit a Cylinder axis b Connection line 126883.doc • 22-