1297652 (1) 九、發明說明 【發明所屬的技術領域】 本發明是關於具有低底板式的腳踏板的速克達型車 輛。 【先前技術】 例如在專利文獻1所習知的速克達型車輛，是將具 有：從頭管朝下方垂下的下框架部、及從該下框架部的下 端朝後方延伸的低框架部，的左右的一對側框架，將其前 端接合在上述頭管，且以在兩側框架的下方所配置的左右 的一對下管來予以補強，而跨越於兩側框架的低框架部在 地板管道部的兩側形成了腳踏板。 [專利文獻1] 日本專利第3 423487號公報 【發明內容】 [發明欲解決的課題] 關於速克達型車輛，當形成了能確保充分的置腳空間 的平坦的低底板式的腳踏板時，如上述專利文獻1所揭示 的構造，從下方以下管來將左右的一對側框架予以補強的 車體構造，要將側框架上的低框架部的位置降低是很困難 的，而希望開發出新的車體構造，可形成能確保充分的縱 向剛性且平坦的低底板式的腳踏板。 本發明，鑒於這種情形，其目的要提供一種速克達型 -5- (2) 1297652 車輛，可形成低底板式的腳踏板，該腳踏板能確保充 縱向剛性，且確保有充分的置腳空間。 [用以解決課題的手段] 爲了達成上述目的，第1發明，是具有低底板式 踏板的速克達型車輛，是具備有：具有，從可轉向地 來軸支承前輪的前叉予以支承的頭管，朝下方垂下的 架部、及從該下框架部的下端朝後方延伸的低框架部 左右的一對側框架；在兩側框架之間，從上述頭管通 述側框架的附近而朝下方垂下的中央框架；以及配置 述低框架部的上方，用來將上述中央框架及兩側框架 補強的連結框架；該連結框架是配置在上述腳踏板 方。 第2發明，是針對第1發明，將上述中央框架 爲：橫長矩形的橫剖面形狀。 第3發明，是具有低底板式的腳踏板的速克達 輛，是具備有：具有，從可轉向地將用來軸支承前輪 叉予以支承的頭管，朝下方垂下的下框架部、及從該 架部的下端朝後方延伸的低框架部，的左右的一對 架；以及具有，從俯視方向觀察形成爲前端封閉的 字型，並且後端部連結於上述兩側框架的U字型部 將該U字型部的前端部寬度方向靠近中央處連結於 兩側框架的支承部之連結框架；該連結框架，是被 在：上述兩側框架的低框架部的上方且在上述腳踏板 分的 的腳 將用 下框 ，的 過上 於上 予以 的下 形成 型車 的前 下框 側框 略 U 、及 上述 配置 的下 -6 - (3) 1297652 方。 第4發明，是具有低底板式的腳踏板的速克達型車 輛，是具備有：具有’從可轉向地將用來軸支承前輪的前 叉予以支承的頭管，朝下方垂下的下框架部、及從該下框 架部的下端朝後方延伸的低框架部，的左右的一對側框 架；在兩側框架的較上述低框架部更上方處，將前端部連 結於上述下框架部，並且將後端部連結於上述低框架部的 左右的一對連結框架；將上述兩側框架的上述低框架部之 間予以連結的支承支架；以及在兩側框架之間，從上述頭 管通過上述側框架的附近，而朝下方垂下並且在上述支承 支架連結著下端部的中央框架；上述連結框架是配置於上 述腳踏板的下方。 第5發明，是針對第1或4發明，在上述兩側框架的 下框架部及上述中央框架之間，配置有散熱水箱。 第6發明，是針對第5發明，上述腳踏板的上面部， 是設定在：較上述散熱水箱的上下方向中心位置更下方的 位置。 第7發明，是針對第1〜6其中一項發明，上述兩側 框架’分別具備有：與低框架部的後端相連，並且在較上 述腳踏板更後方處朝上方立起的立起框架部；在包含上述 頭管、上述兩側框架、及上述連結框架所構成的車體框 架、與動力單元之間所設置的連桿機構的車體框架側樞支 軸’是配置在較上述立起框架部的後面部更前方處。 第8發明，是針對第1〜7其中一項發明，在朝向與 -7- (4) (4)1297652 上述前輪的旋轉軸線垂直相交的平面的投影圖上，在以連 結於上述前叉的轉向車把的端部所設置的車把把手爲中 心，通過上述前輪的旋轉中心的假想圓弧內，配置了：在 包含上述頭管、上述兩側框架、及上述連結框架所構成的 車體框架、與動力單元之間所設置的連桿機構的動力單元 側樞支軸。 第9發明，是針對第1發明，在從上述頭管垂下的主 管及上述頭管之間，設置有角撐板，上述兩側框架所具備 的下框架部的上端部，被接合於上述頭管及上述角撐板兩 方。 第1 〇發明，是針對第9發明，上述中央框架的上 部’是被連結於上述主管。 [發明效果] 藉由第1發明，將兩側框架的低框架部的位置充分地 設定到下方，用來將兩側框架、及在兩側框架之間從頭管 朝下方垂下的中央框架予以補強的連結框架部，是配置在 上述低框架部的上方且在腳踏板的下方，則形成了可確保 充分的置腳空間的平坦的腳踏板，而讓使用性提昇，並且 可讓車體框架的縱向剛性及扭轉剛性的平衡性提昇。 藉由第2發明，能容易確保在腳踏板的前方所配置的 中央框架的前後方向設置空間，且能提高中央框架的剛 性。 藉由第3發明，能將兩側框架的低框架部的位置充分 -8- (5) (5)1297652 地設定到下方，在上述低框架部的上方且在腳踏板的下方 所配置的連結框架，是以：從俯視方向觀察形成爲前端封 閉的略U字型，並且後端部連結於上述兩側框架的u字 型部' 及將該U字型部的前端部寬度方向靠近中央處連 結於上述兩側框架的支承部所構成，則形成了可確保充分 剛性且可確保充分的置腳空間的平坦的腳踏板，而讓使用 性提昇，並且可調整車體框架的扭轉剛性。 藉由第4發明，將兩側框架的低框架部的位置充分地 設定到下方，用來將兩側框架、及在兩側框架之間從頭管 朝下方垂下的中央框架予以補強的支承支架及連結框架， 是配置在上述低框架部的上方且在腳踏板的下方，則形成 了可確保充分的置腳空間的平坦的腳踏板，而讓使用性提 昇’並且可讓車體框架的縱向剛性及扭轉剛性的平衡性提 昇。 藉由第5發明，可擴大平坦的腳踏板的空間，且可加 長散熱水箱的上下長度，將散熱水箱的容量增大，則能提 高引擎的冷卻性能。 藉由第6發明，將腳踏板的位置盡量設定到下方位 置，而能提昇上下車的方便性。 藉由第7發明，將在車體框架及動力單元間所設置的 連桿機構的車體框架側樞支軸，盡量配置在前方位置，則 可縮短輪距。 藉由第8發明，將連桿機構的動力單元側樞支軸盡量 配置到前方位置，則可縮短輪距。 -9 - (6) 1297652 藉由第9發明，可以提高兩側框架及頭管的接合剛 性。 藉由第1 〇發明，可以提高中央框架的上部剛性。 【實施方式】 以下根據附圖所示的本發明的實施例，來說明本發明 的實施方式。 第1圖〜第5圖是顯示本發明的第一實施例，第1圖 是速克達型車輛的側面圖，第2圖是車體框架的側面圖， 第3圖是從第2圖的箭頭3方向觀察的視圖，第4圖是從 第2圖的箭頭4方向觀察的正面圖，第5圖是顯示連桿機 構的構造的縱剖側面圖。 首先在第1圖，在具有低底板式的腳踏板26的速克 達型車輛所具備的車體框架FA的前端的頭管1 2，可轉向 地支承著前叉11，該前叉11軸支承著前輪WF，在與前 叉1 1的上部相連的桿狀的轉向車把2 1的兩端，分別設置 了車把把手22。在車體框架FA，是經由連桿機構42，可 上下擺動地支承著動力單元P的前部，該動力單元P是 由：引擎E、及將來自於該引擎E的動力變速而傳達到後 輪WR的變速機Μ所構成；上述後輪WR是以動力單元P 的後部所支承，在車體框架FA的後部及動力單元Ρ的後 部之間，設置有後避震單元23。 車體框架F A，具備有：上述頭管1 2、其前端部接合 於該頭管12的左右的一封側框架13···、在兩側框架13… -10- (7) (7)1297652 之間，從上述頭管1 2通過側框架1 3…的前部附近而朝下 方垂下的中央框架14、從上述頭管12垂下的主管15、連 結於兩側框架1 3…的前部之間，並且接合著上述主管1 5 的下端的前部橫支架1 6、配置在上述腳踏板2 6的下方， 將上述中央框架14及兩側框架13…予以補強的連結框架 17、在兩側框架1 3…所安裝的左右的一對後副框架 1 8…、以及連結於兩側框架1 3…的後端之間的後部橫支 架19。 車體框架FA，是以合成樹脂製的車體外殼24所覆 蓋，該車體外殼24，是具備有：用來覆蓋駕駛者的腳的 前方的腿部護罩25、用來載置騎乘者的腳部且與腿部護 罩2 5的下部相連的腳踏板2 6、及與腳踏板2 6相連，而 從兩側覆蓋車體後部的側外殻2 7 ;在側外殻2 7上，設置 有雙人乘坐型的乘車用座墊30，該座墊30可從上方開 閉：置物箱2 8、及在該置物箱2 8的後方所配置的油箱 29 ° 在第2圖〜第4圖，側框架13，是將單一的管體彎 曲成形所構成，是一體地具有：從頭管1 2朝下方垂下的 下框架部1 3 a、與該下框架部1 3 a的下端相連，並且在腳 踏板2 6的下方朝後方延伸的低框架部1 3 b、與低框架部 13b的後端相連，並且在上述腳踏板26的後方朝上方立 起的立起框架部13c、以及用來支承乘車用座墊30，而從 立起框架部1 3 c的上端朝後方延伸的座墊軌道部1 3 d。 在從頭管12垂下的主管15及頭管12之間，設置有 -11 - (8) 1297652 角撐板3 1，側框架1 3所具備的下框架部1 3 a的上端部， 是接合在頭管12及角撐板31兩方。中央框架14的上部 是連結於主管1 5，像該實施例用焊接方式也可以，而也 可以使用螺栓進行鎖裝。 上述低框架部13b，是由：從下框架部13a的下端朝 後方大致水平地延伸的水平部分1 3 b a、以及從該水平部 分13ba的後端朝斜後上方傾斜的傾斜部分13bb所構成。 上述連結框架1 7，是配置在：較兩側框架1 3的低框 架部13b更上方且在腳踏板26的下方處，是由：從俯視 方向觀察形成爲前端封閉的略U字型，且後端部連結在 上述兩側框架1 3的低框架部1 3 b的傾斜部分1 3 bb的U 字型部32、以及將該U字型部32的前端部寬度方向靠近 中央處連結在，上述兩側框架13的下框架部13a及低框 架部13b的連設部的支承部33所構成；在該實施例，U 字型部3 2是以較側框架1 3更小直徑的單一管材彎曲所形 成，並且以左右的一對管構件34、34所構成的支承部 3 3 ’是將U子型部3 2的則端部寬度方向靠近中央處的兩 個部位，連結於下框架部1 3 a及低框架部1 3 b的連設部。 從側面觀察，側框架1 3的低框架部1 3 b、及較側框 架1 3更小直徑而配置於低框架部1 3 b的上方的U字型部 32 ’是配置成：在腳踏板26的下方相互成對而上下並 排。 中央框架14，是具有：車寬方向的寬度W1大於前後 方向的寬度W2(參照第2圖）的橫長矩形的橫剖面形狀， -12- 12976521297652 (1) Description of the Invention [Technical Field of the Invention] The present invention relates to a scooter type vehicle having a low floor type foot pedal. [Prior Art] For example, the Scooter type vehicle known in Patent Document 1 has a lower frame portion that hangs downward from the head pipe and a low frame portion that extends rearward from the lower end of the lower frame portion. a pair of left and right side frames, the front end of which is joined to the head pipe, and is reinforced by a pair of left and right lower pipes arranged under the two side frames, and the lower frame part spanning the side frames is in the floor pipe Foot pedals are formed on both sides of the department. [Patent Document 1] Japanese Patent No. 3 423 487 [Problem to be Solved by the Invention] With regard to the Scooter type vehicle, a flat low-floor type footrest capable of securing a sufficient foot space is formed. In the structure disclosed in Patent Document 1, it is difficult to reduce the position of the low frame portion on the side frame by reducing the position of the left and right side frames from the lower tube. A new body structure has been developed to form a low floor type foot pedal that ensures sufficient longitudinal rigidity and flatness. The present invention, in view of such circumstances, aims to provide a Scooter type-5-(2) 1297652 vehicle which can form a low floor type foot pedal which ensures longitudinal rigidity and ensures sufficient The space for the feet. [Means for Solving the Problems] In order to achieve the above object, a first aspect of the invention provides a scooter type vehicle having a low floor type pedal, and is provided with a front fork that rotatably supports a front wheel. a head pipe, a frame portion that hangs downward, and a pair of left and right side frames of the low frame portion that extends rearward from a lower end of the lower frame portion; and a front view of the side frame from the head pipe between the two side frames a central frame that hangs downward; and a connecting frame for reinforcing the center frame and the two side frames above the lower frame portion; the connecting frame is disposed on the footboard side. According to a second aspect of the invention, in the first aspect of the invention, the center frame is a horizontally long rectangular cross-sectional shape. According to a third aspect of the invention, there is provided a scooter having a low floor type footrest, and a lower frame portion that slidably supports a head pipe for supporting a front wheel fork; And a pair of left and right frames of the low frame portion extending rearward from the lower end of the frame portion; and a U-shaped end portion that is closed at the front end when viewed from a plan view direction and connected to the both side frames The connecting portion is connected to the connecting frame of the support portions of the both side frames in the width direction of the front end portion of the U-shaped portion; the connecting frame is above the lower frame portion of the both side frames and at the foot The foot of the pedal will be the lower frame, and the front lower frame side frame of the lower forming car will be slightly U, and the lower -6 - (3) 1297652 side of the above configuration. According to a fourth aspect of the invention, there is provided a scooter type vehicle having a low floor type footrest, which is provided with a head pipe that slidably supports a front fork for supporting a front wheel, and hangs downward a pair of left and right side frames of the frame portion and the low frame portion extending rearward from the lower end of the lower frame portion; and a front end portion connected to the lower frame portion at a position higher than the lower frame portion of the both side frames And a pair of left and right connecting frames connecting the rear end portion to the lower frame portion; a support bracket connecting the low frame portions of the both side frames; and a head tube between the side frames The center frame of the lower end portion is connected to the support bracket by the vicinity of the side frame, and the connection frame is disposed below the foot board. According to a fifth aspect of the invention, in the first or fourth aspect of the invention, the heat dissipating water tank is disposed between the lower frame portion of the both side frames and the center frame. According to a sixth aspect of the invention, the upper surface of the footrest is set to be lower than a center position of the heat dissipation tank in the vertical direction. According to a seventh aspect of the invention, in the first aspect of the invention, the two side frames (the side frames are respectively provided with: a rear end connected to the rear end of the lower frame portion, and rising upwards at a position rearward of the footrest a frame portion; the vehicle body frame side pivot shaft ' including the above-described head pipe, the both side frames, and the vehicle body frame formed by the connecting frame and the power unit; The front part of the frame part is raised further forward. According to an eighth aspect of the invention, in the projection of the plane perpendicular to the rotation axis of the front wheel of the -7-(4)(4)1297652, the first aspect of the invention is connected to the front fork. The handlebar of the steering handle is centered on the handlebar of the handlebar, and the vehicle body including the head pipe, the two side frames, and the connecting frame is disposed in an imaginary arc of the center of rotation of the front wheel. The power unit side pivot shaft of the link mechanism provided between the frame and the power unit. According to a ninth aspect of the invention, a gusset is provided between a main pipe that is suspended from the head pipe and the head pipe, and an upper end portion of the lower frame portion of the both side frames is joined to the head Tube and the above gussets. According to a first invention, in the ninth invention, the upper portion of the center frame is connected to the main pipe. [Effect of the Invention] According to the first aspect of the invention, the position of the lower frame portion of the both side frames is sufficiently set to the lower side, and the center frame which is sagged downward from the head pipe between the both side frames and the frame between the both sides is reinforced. The connecting frame portion is disposed above the lower frame portion and below the footboard, thereby forming a flat footrest that can secure a sufficient foot space, thereby improving usability and allowing the body to be used. The balance between the longitudinal rigidity and the torsional rigidity of the frame is improved. According to the second aspect of the invention, it is possible to easily secure a space in the front-rear direction of the center frame disposed in front of the footrest, and it is possible to improve the rigidity of the center frame. According to the third aspect of the invention, the position of the low frame portion of the both side frames can be sufficiently set to -8 - (5) (5) 1297 652 to the lower side, and the lower frame portion is disposed above the footrest. The connecting frame is a U-shaped portion that is closed at the front end when viewed from a plan view, and the rear end portion is coupled to the u-shaped portion of the both side frames, and the front end portion of the U-shaped portion is oriented in the center of the width direction. The support portion connected to the both side frames is formed to form a flat footrest that can ensure sufficient rigidity and can secure a sufficient foot space, thereby improving usability and adjusting the torsional rigidity of the vehicle body frame. . According to the fourth aspect of the invention, the position of the lower frame portion of the both side frames is sufficiently set to the lower side, and the support frame for reinforcing the side frames and the center frame which is suspended downward from the head pipe between the both side frames and The connecting frame is disposed above the lower frame portion and below the footboard, thereby forming a flat footrest that ensures a sufficient foot space, and improves the usability and allows the body frame to be The balance between longitudinal rigidity and torsional rigidity is improved. According to the fifth aspect of the invention, the space of the flat footrest can be enlarged, and the upper and lower lengths of the radiator tank can be lengthened, and the capacity of the radiator tank can be increased to improve the cooling performance of the engine. According to the sixth aspect of the invention, the position of the footrest can be set as far as possible to the lower position, and the convenience of getting on and off the vehicle can be improved. According to the seventh aspect of the invention, the vehicle body frame side pivot shaft of the link mechanism provided between the vehicle body frame and the power unit can be arranged in the front position as much as possible, whereby the track distance can be shortened. According to the eighth aspect of the invention, the power unit side pivot shaft of the link mechanism is disposed as far as possible to the front position, whereby the track distance can be shortened. -9 - (6) 1297652 According to the ninth invention, the joint rigidity of the both side frames and the head pipe can be improved. According to the first invention, the upper rigidity of the center frame can be improved. [Embodiment] Hereinafter, embodiments of the present invention will be described based on embodiments of the present invention shown in the drawings. 1 to 5 are views showing a first embodiment of the present invention, and Fig. 1 is a side view of a Scooter type vehicle, Fig. 2 is a side view of a vehicle body frame, and Fig. 3 is a side view of Fig. 2 The view seen in the direction of the arrow 3 is a front view seen from the direction of the arrow 4 in Fig. 2, and Fig. 5 is a longitudinal sectional side view showing the structure of the link mechanism. First, in the first diagram, the head pipe 12 at the front end of the vehicle body frame FA provided in the scooter type vehicle having the low floor type footrest 26 steerably supports the front fork 11, the front fork 11 The front wheel WF is supported by the shaft, and the handlebar handle 22 is provided at each end of the rod-shaped steering handle 21 connected to the upper portion of the front fork 11. In the vehicle body frame FA, the front portion of the power unit P is supported by the link mechanism 42 so as to be vertically swingable. The power unit P is driven by the engine E and shifting the power from the engine E. The rear wheel WR is supported by a rear portion of the power unit P, and a rear suspension unit 23 is provided between the rear portion of the vehicle body frame FA and the rear portion of the power unit 。. The vehicle body frame FA includes: the head pipe 1 and 2, a front side frame 13 whose front end portion is joined to the head pipe 12, and a frame 13 on both sides... -10- (7) (7) Between 1297652, the center frame 14 that hangs downward from the vicinity of the front portion of the side frame 1 3... from the head pipe 1 2, the main pipe 15 that is suspended from the head pipe 12, and the front portion that is connected to the side frames 1 3 ... And a front cross bracket 16 that is joined to the lower end of the main pipe 15 and a connecting frame 17 that is disposed below the footboard 26 and that reinforces the center frame 14 and the side frames 13... A pair of left and right rear sub-frames 18 and 8 attached to the side frames 1 3, and a rear cross bracket 19 connected between the rear ends of the side frames 1 3 . The vehicle body frame FA is covered with a synthetic resin body casing 24, and the vehicle body casing 24 is provided with a leg shield 25 for covering the front of the driver's foot for mounting the ride. The foot of the person is connected to the lower portion of the leg shield 25 and the foot pedal 26, and is connected to the foot pedal 26, and covers the side outer casing 27 of the rear of the vehicle body from both sides; In the case of the second seat type, the seat cushion 30 for the double seat type is provided, and the seat cushion 30 can be opened and closed from above: the storage box 28 and the oil tank 29° disposed behind the storage box 28 are in the second figure. 4, the side frame 13 is formed by bending a single pipe body, and integrally includes a lower frame portion 13a that hangs downward from the head pipe 12, and a lower end of the lower frame portion 13a. a lower frame portion 13b that extends rearwardly under the footrest 26, and a rear frame portion that is connected to the rear end of the lower frame portion 13b and that rises upward at the rear of the footrest 26 13c and a seat rail portion 13d extending from the upper end of the standing frame portion 13c to the rear for supporting the seat cushion 30 for the vehicle. Between the main pipe 15 and the head pipe 12 which are suspended from the head pipe 12, an upper end portion of the lower frame portion 13 3 provided in the side frame 13 is provided with an -11 - (8) 1297652 gusset 3 1, and is joined at Both the head pipe 12 and the gusset 31 are two. The upper portion of the center frame 14 is coupled to the main pipe 15 and may be welded as in the embodiment, and may be locked by bolts. The lower frame portion 13b is composed of a horizontal portion 13b that extends substantially horizontally from the lower end of the lower frame portion 13a toward the rear, and an inclined portion 13bb that is inclined obliquely rearward and upward from the rear end of the horizontal portion 13ba. The connecting frame 17 is disposed above the lower frame portion 13b of the side frames 13 and below the foot board 26, and is formed in a slightly U-shaped shape in which the front end is closed when viewed from a plan view. The rear end portion is coupled to the U-shaped portion 32 of the inclined portion 1 3 bb of the lower frame portion 1 3 b of the both side frames 13 and the distal end portion of the U-shaped portion 32 is connected to the center portion in the width direction thereof. The lower frame portion 13a of the both side frames 13 and the support portion 33 of the connecting portion of the low frame portion 13b are formed; in this embodiment, the U-shaped portion 3 2 is a single smaller diameter than the side frame 13 The support portion 3 3 ′ which is formed by the tube bending and the left and right pair of pipe members 34 and 34 is a portion in which the end portion width direction of the U sub-portion 3 2 is close to the center, and is connected to the lower frame. The connecting portion of the portion 1 3 a and the low frame portion 1 3 b. The U-shaped portion 32 ′ disposed on the lower side of the lower frame portion 1 3 b and the lower frame portion 1 3 b of the side frame 13 and the smaller diameter of the side frame 13 are disposed so as to be on the pedal. The lower sides of the plates 26 are paired with each other and arranged side by side. The center frame 14 is a cross-sectional shape having a horizontally long rectangular shape in which the width W1 in the vehicle width direction is larger than the width W2 in the front-rear direction (see FIG. 2), -12- 1297652
也可以由方筒狀的管體所構成，也可以用鑄造成形的構 造。其上部連結於主管1 5的中央框架1 4的下端，是接合 於上述連結框架1 7的U字型部32的前端部寬度方向中 央。而從側面觀察，側框架1 3的下框架部1 3 a、與爲較 該下框架部1 3 a更小直徑的管材的中央框架1 4，是配置 成：在腳踏板2 6的前方成對而前後並排。 在上述兩側框架1 3…，是安裝著：將其至少一部分 配置在立起框架部1 3 c…的後方的左右的一對後副框架 1 8…，在該實施例，後副框架1 8，是配置在：側框架1 3 的低框架部1 3 b的下方且在立起框架部丨3 〇的後方，後副 框架18的前端，在較連結框架17的U字型部32的接合 部更前方’被接合在低框架部1 3b的傾斜部分1 3bb的前 端後面部，後副框架1 8的後端，是被接合在側框架1 3的 座墊軌道部1 3 d靠前部的下面部。 並且兩後副框架1 8…的中間部，是彎曲成接近側框 架1 3…的立起框架部1 3 c…側，在較該彎曲部更下方且在 兩側框架1 3…及兩後副框架1 8…之間，是分別設置有樞 支板3 6…。 後副框架1 8，是由較側框架1 3更小直徑的管材所構 成，從側面觀察，側框架1 3的低框架部1 3 b及立起框架 部1 3 c、與由小直徑的管材所構成的後副框架1 8，是配置 成：在腳踏板26的下方及後方成對並排。 如弟1圖所不’在上述兩側框架1 3的下框架部1 3 a 及上述中央框架14之間，配置有散熱水箱37,上述腳踏 •13- (10) 1297652 板2 6的上面部，是設定在較散熱水箱3 7的上下方向中心 位置CP更下方的位置。 如第4圖所示，在散熱水箱3 7的上部所設置的左右 的一對支承腕部3 8、3 8，是被彈性支承於，在前部橫支 架1 6所設置的左右的一對支架3 9、3 9。而從前方側將散 熱水箱3 7的下部予以覆'蓋的防護管4 0的左右兩端，是被 接合在兩側框架13…的下框架部13a…的下端前面部，在 朝向該防護管40的中央部的支架4 1，彈性支承著散熱水 箱3 7的下部中央部。 合倂參照第5圖，在側框架1 3的低框架部1 3 b及立 起框架部1 3c的連設部，是固定安裝著朝後方突出的支承 板43，在動力單元P的引擎E的下部是設置有托架44。 連桿機構4 2，是具備有：在上述樞支板3 6經由車體 框架側樞支軸45而可轉動地被支承著的左右的一對第一 連桿臂46、其一端部經由連結軸47而可轉動地被連結到 第一連桿臂46的另一端部的第二連桿臂48、被固定在第 二連桿臂4 8的另一端部，並且可轉動地被支承在托架4 4 的動力單元側樞支軸4 9、其一端部被連結於動力單元側 樞支軸4 9而朝上方延伸，並且中間部經由樞軸5 0而可轉 動地被支承於支承板43的限制臂5 1、以及被安裝於該限 制臂5 1的另一端部的彈性構件5 2 ;限制臂5 1的轉動， 是被限制在：上述彈性構件5 2與側框架1 3的立起框架部 1 3 c的下部後面部彈性接觸的位置、與上述彈性構件4 9 從前方彈性接觸於在上述支承板43所設置的限制板部 -14- (11) 1297652 4 3 a的位置之間。 並且上述連桿機構42的車體框架側樞支軸45，是配 置在：較側框架1 3的立起框架部丨3 c的後面部更前方 處，上述動力單元側樞支軸49，如第1圖所示，在朝向 與前輪WF的旋轉軸線垂直相交的平面的投影圖上，是配 置在：以上述車把把手22爲中心而通過前輪WF的旋轉 中心的假想圓弧C內。 接著針對該第一實施例的作用來加以說明，車體框架 F A，是具備有：具有，從頭管1 2朝下方垂下的下框架部 1 3 a、及從該下框架部1 3 a的下端朝後方延伸的低框架部 13b，的左右的一對側框架13···;在兩側框架13…之間， 從頭管1 2朝下方垂下的中央框架1 4 ;以及配置於低框架 部13b…的上方，用來將中央框架14及兩側框架13…予 以補強的連結框架1 7 ;該連結框架1 7是配置在低底板式 的腳踏板2 6的下方，所以充分地將兩側框架1 3…的低框 架部1 3 b…的位置設定到下方，藉由讓用來將兩側框架 13…、及在兩側框架13…之間從頭管12朝下方垂下的中 央框架14予以補強的連結框架1 7，配置在低框架部 13b···的上方且在腳踏板26的下方，則可形成能充分確保 置腳空間的平坦的腳踏板26，而提昇使用性，並且可使 車體框架FA的縱向剛性及扭轉剛性的平衡性提昇。 這種效果，不只是具有U字型部3 2及支承部3 3的 連結框架1 7，以在略水平面內將側框架1 3…的低框架部 13b···的後部及下框架部13a···之間直線狀地連結的方 -15- (12) 1297652 式，來構成連結框架也可達成。 並且中央框架1 4是具有橫長矩形的橫剖面形狀的構 造，所以容易確保在腳踏板2 6的前方所配置的中央框架 1 4的前後方向設置空間，且能提高中央框架1 4的剛性。 連結框架1 7，具有：從俯視方向觀察形成爲前端封 閉的略U字型，並且後端部連結於兩側框架1 3的U字型 部32、及將該U字型部32的前端部寬度方向靠近中央處 連結於側框架1 3的支承部3 3，而可確保充分的剛性，且 形成能確保充分的置腳空間的平坦的腳踏板26，而讓使 用性提昇，並且可調整車體框架FA的扭轉剛性。 這種效果，即使將中央框架1 4省略也可達成。 在從頭管1 2垂下的主管1 5及頭管1 2之間，設置有 角撐板3 1，兩側框架1 3所具備的下框架部1 3 a的上端 部，被接合於頭管1 2及角撐板3 1的兩方，藉此，可提高 兩側框架1 3及頭管1 2的接合剛性，而將中央框架14的 上部連結於主管1 5，所以能夠提高中央框架1 4的上部剛 性。 並且側框架1 3，是一體地具有：從頭管12朝下方垂 下的下框架部13a、與該下框架部13a的下端相連，並且 通過腳踏板26的下方朝後方延伸的低框架部13b、與低 框架部1 3 b的後端相連，並且在腳踏板26的後方朝上方 立起的立起框架部13c、以及從立起框架部13c的上端朝 後方延伸的座墊軌道部13d;是分別由單一的管體彎曲而 成，則可減低零件數量，並且減少車體框架FA的組裝程 -16- (13) (13)1297652 序。 並且側框架1 3、較側框架1 3更小直徑而用來補強側 框架1 3的中央框架1 4、連結框架1 7的U字型部3 2及後 副框架1 8，從側面觀察，是在腳踏板26的前方、下方及 後方’成對地並排配置，所以可構成輕量且高剛性的車體 框架FA。 在兩側框架1 3…的下框架部1 3 a…及中央框架1 4之 間，配置有散熱水箱3 7，而可擴大平坦的腳踏板2 6的空 間，加長散熱水箱3 7的上下長度，增大散熱水箱3 7的容 量，則能提高引擎E的冷卻性能。除此之外，腳踏板26 的上面部是設定在較散熱水箱3 7的上下方向中心位置CP 更下方的位置，所以可以將腳踏板26的位置盡量設置到 下方位置，而可提升上下車的方便性。 在兩側框架1 3…，是安裝著：將至少一部分配置在 起框架部1 3 c…的後方的左右的一對後副框架1 8…，在 兩側框架13…及兩側框架13…之間所設的樞支板36···， 是支承著：在車體框架FA及動力單元P之間所設置的連 桿機構4 2的車體框架側樞支軸4 5，所以可避免側框架1 3 的大型化，且提高車體框架側樞支軸4 5周圍的剛性，藉 由避免側框架1 3的大型化，則能擴大腳踏板26的後方空 間。 並且上述連桿機構42的車體框架側樞支軸45，是配 置在較立起框架部1 3 c的後面部更前方處，所以能盡量地 將連桿機構42的車體框架側樞支軸45配置到前方位置， -17- (14) (14)It may be composed of a square tubular body or a cast structure. The upper portion thereof is coupled to the lower end of the center frame 14 of the main pipe 15 and is joined to the center of the front end portion of the U-shaped portion 32 of the connecting frame 17 in the width direction. Viewed from the side, the lower frame portion 13a of the side frame 13 and the central frame 14 of the pipe having a smaller diameter than the lower frame portion 13a are disposed in front of the footrest 26. Paired and side by side. In the above-described both side frames 1 3..., a pair of right and left rear sub-frames 18 are disposed on the left and right sides of at least a part of the standing frame portions 1 3 c..., in this embodiment, the rear sub-frame 1 8, is disposed below the lower frame portion 1 3 b of the side frame 1 3 and behind the rising frame portion 丨 3 ,, and the front end of the rear sub-frame 18 is closer to the U-shaped portion 32 of the connecting frame 17 The front portion of the joint portion is joined to the rear end portion of the inclined portion 1 3bb of the lower frame portion 13b, and the rear end of the rear sub-frame 18 is joined to the front of the seat rail portion 1 3d of the side frame 13 The lower part of the department. And the intermediate portion of the two rear sub-frames 18, ... is curved to be close to the side of the standing frame portion 1 3 c... of the side frame 1 3, and is lower than the curved portion and on both sides of the frame 1 3 ... and Between the sub frames 1 8 ..., pivot plates 3 6 are respectively provided. The rear sub-frame 18 is composed of a pipe having a smaller diameter than the side frame 13 3, and the low frame portion 1 3 b of the side frame 13 and the rising frame portion 13 c are viewed from the side, and are small diameter The rear sub-frames 18 made of pipes are arranged side by side in the lower and rear sides of the footboard 26. As shown in Fig. 1, the heat dissipation water tank 37 is disposed between the lower frame portion 13a of the both side frames 13 and the center frame 14, and the upper surface of the pedal 13-(10) 1297652 plate 26 is disposed. The portion is set at a position lower than the center position CP in the vertical direction of the radiator tank 37. As shown in Fig. 4, the pair of left and right support arm portions 38, 38 provided on the upper portion of the heat dissipation water tank 37 are elastically supported, and a pair of left and right sides provided in the front cross bracket 16. Brackets 3 9, 3 9 . On the front side, the left and right ends of the protective tube 40 that cover the lower portion of the heat-dissipating water tank 37 are joined to the lower end portion of the lower frame portion 13a of the two side frames 13... toward the protective tube. The bracket 4 1 at the center of the 40 is elastically supported by the lower central portion of the radiator tank 37. Referring to Fig. 5, in the connecting portion between the lower frame portion 13b of the side frame 13 and the rising frame portion 13c, the support plate 43 projecting rearward is fixedly attached, and the engine E of the power unit P is attached. The lower portion is provided with a bracket 44. The link mechanism 42 includes a pair of left and right first link arms 46 that are rotatably supported by the pivot plate 36 via the vehicle body frame side pivot shaft 45, and one end portion thereof is connected The second link arm 48, which is rotatably coupled to the other end of the first link arm 46, is fixed to the other end of the second link arm 48, and is rotatably supported on the support The power unit side pivot shaft 49 of the frame 44 is extended upward by being coupled to the power unit side pivot shaft 49, and the intermediate portion is rotatably supported by the support plate 43 via the pivot 50. The restricting arm 5 1 and the elastic member 5 2 attached to the other end of the restricting arm 51 are restricted to the rotation of the elastic member 52 and the side frame 13 The position at which the lower rear portion of the frame portion 1 3 c is elastically contacted is in elastic contact with the elastic member 49 from the front between the position of the restricting plate portion 14-(11) 1297652 4 3 a provided on the support plate 43. . Further, the body frame side pivot shaft 45 of the link mechanism 42 is disposed further forward than the rear portion of the upright frame portion 丨3 c of the side frame 13, and the power unit side pivot shaft 49 is As shown in Fig. 1, the projection view on a plane perpendicular to the rotation axis of the front wheel WF is disposed in a virtual arc C passing through the center of rotation of the front wheel WF around the handlebar handle 22 as described above. Next, the operation of the first embodiment will be described. The vehicle body frame FA is provided with a lower frame portion 13a that hangs downward from the head pipe 12, and a lower end from the lower frame portion 13a. a pair of right and left side frames 13 of the lower frame portion 13b extending rearward, a center frame 14 that is suspended downward from the head pipe 12 between the side frames 13, and a lower frame portion 13b. Above the ..., the connecting frame 17 for reinforcing the center frame 14 and the side frames 13; the connecting frame 17 is disposed below the lower floor type pedals 26, so that both sides are sufficiently The position of the lower frame portion 1 3 b... of the frame 1 3... is set to the lower side by the center frame 14 for hanging the side frames 13... and the side frames 13 from the head tube 12 downward. The reinforced connecting frame 17 is disposed above the lower frame portion 13b··· and below the foot board 26, so that a flat footrest 26 capable of sufficiently securing the foot space can be formed, and the usability is improved. The balance between the longitudinal rigidity and the torsional rigidity of the body frame FA can be improved. This effect is not limited to the connecting frame 17 having the U-shaped portion 3 2 and the supporting portion 33, so that the rear portion of the lower frame portion 13b of the side frames 1 3... and the lower frame portion 13a are formed in a horizontal plane. The -15-(12) 1297652 type that is linearly connected to each other can also be achieved by forming a joint frame. Further, since the center frame 14 has a cross-sectional shape having a horizontally long rectangular shape, it is easy to ensure a space in the front-rear direction of the center frame 14 disposed in front of the footrest 26, and the rigidity of the center frame 14 can be improved. . The connecting frame 17 has a U-shaped portion that is closed at the front end as viewed in a plan view, and a U-shaped portion 32 that is connected to the both side frames 13 at the rear end portion, and a front end portion of the U-shaped portion 32. The support portion 33 of the side frame 13 is connected to the center in the width direction to ensure sufficient rigidity, and a flat footrest 26 capable of securing a sufficient foot space is formed, which improves the usability and is adjustable. The torsional rigidity of the body frame FA. This effect can be achieved even if the center frame 14 is omitted. Between the main pipe 15 and the head pipe 1 2 which are suspended from the head pipe 12, a gusset plate 3 is provided, and the upper end portion of the lower frame portion 1 3 a of the frame 13 on both sides is joined to the head pipe 1 Both of the 2 and the gussets 3 1 can improve the joint rigidity of the side frames 13 and the head pipe 12, and the upper portion of the center frame 14 is connected to the main pipe 15, so that the center frame 14 can be improved. The upper part is rigid. Further, the side frame 13 has a lower frame portion 13a that hangs downward from the head pipe 12, a lower frame portion 13b that is connected to the lower end of the lower frame portion 13a, and that extends rearward through the lower side of the foot board 26, a rising frame portion 13c that is connected to the rear end of the low frame portion 13b, and that rises upward at the rear of the footrest 26, and a seat rail portion 13d that extends rearward from the upper end of the rising frame portion 13c; It is bent by a single pipe body, which can reduce the number of parts and reduce the assembly process of the body frame FA-16-(13) (13)1297652. Further, the side frame 13 and the side frame 13 are smaller in diameter, and the central frame 14 for reinforcing the side frame 13 and the U-shaped portion 3 2 and the rear sub-frame 18 of the connecting frame 17 are viewed from the side. Since the front side, the lower side, and the rear side of the foot board 26 are arranged side by side in pairs, a lightweight and highly rigid vehicle body frame FA can be constructed. Between the lower frame portions 1 3 a... of the side frames 1 3... and the center frame 14 4, a heat dissipating water tank 3 7 is disposed, and the space of the flat footboard 26 can be enlarged, and the upper and lower sides of the heat dissipating water tank 37 can be lengthened. The length, increasing the capacity of the cooling water tank 37, can improve the cooling performance of the engine E. In addition, the upper surface of the footrest 26 is set at a position lower than the center position CP of the heat-dissipating water tank 37, so that the position of the footrest 26 can be set as far as possible to the lower position, and the upper surface can be raised. The convenience of getting off the bus. The two side frames 1 3... are mounted: a pair of left and right rear sub-frames 18... at least a part of which are disposed behind the frame portions 1 3 c..., on both side frames 13 and both side frames 13... The pivotal support plate 36··· is provided to support the body frame side pivot shaft 45 of the link mechanism 4 provided between the vehicle body frame FA and the power unit P, so that it can be avoided. The size of the side frame 1 3 is increased, and the rigidity around the vehicle body frame side pivot shaft 45 is increased, and by increasing the size of the side frame 13 , the rear space of the foot board 26 can be enlarged. Further, the body frame side pivot shaft 45 of the link mechanism 42 is disposed further forward than the rear portion of the upright frame portion 13c, so that the body frame side of the link mechanism 42 can be pivoted as much as possible. Shaft 45 is assigned to the front position, -17- (14) (14)
1297652 而能夠縮短輪距。 兩後副框架1 8…的中間部是彎曲成，接近 側框架1 3…的立起框架部1 3 c…側，所以能避免 P對於後副框架1 8…的干涉，而將動力單元P… 方側，而可更縮短輪距。 並且在對於與前輪WF的旋轉軸線垂直相交 投影圖上，在以車把把手22爲中心而通過前輪 轉中心的假想圓弧C內，藉由配置連桿機構42 元側樞支軸4 9，則可盡量將連桿機構42的動丈 支軸49配置到前方位置，而可更縮短輪距。 第6圖〜第10圖是顯示本發明的第二實拥 圖是速克達型車輛的側面圖，第7圖是車體框 圖，第8圖是從第7圖的箭頭8方向觀察的俯兩 圖是從第7圖的箭頭9方向觀察的正面圖，第 示連桿機構的構造的側面圖。 在第二實施例的說明，其與第一實施例對應 是附加相同的參照圖號，只有圖示而省略詳細的 首先在第6圖，在具有低底板式的腳踏板 達型車輛所具備的車體框架FB，是經由連桿機 上下擺動地支承著由引擎E及變速機Μ所構拭 元Ρ的前部，在車體框架FB的後部及動力單元 之間，設置有後避震單元23。 合倂參照第7圖〜第9圖，車體框架FB， 上述頭管1 2、其前端部接合於該頭管1 2的左左 於上述兩 ，動力單元 配置到前 :的平面的 WF的旋 的動力單 f單元側樞 Η列，第6 架的側面 見圖，第9 1 〇圖是顯 (的部分， 說明。 2 6的速克 構72，可 ^的動力單 Ρ的後部 具備有： ί的一對側 -18- (15) 1297652 框架53 ···、由管材所構成，在雨側框架53…之間， 述頭管1 2通過側框架5 3…的前部附近而朝下方垂下 央框架54、在車體外殼24所具備的腳踏板26的下 前後延伸’並且其兩端部連結於上述兩側框架5 3… 結框架55···、配置於雨連結框架55…的下方，連結 述兩側框架53…之間，並且連結著上述中央框架54 端部的支承支架56、連結於兩側框架53…的前部之 並且接合著上述主管15的下端的前部橫支架57、連 兩側框架5 3…的中間部之間的第一中間部橫支架5 8 較第一中間部橫支架5 8的更後方處連結於兩側框架 的中間部之間的第二中間部橫支架5 9、連結於兩側 5 3…的後端之間的後部橫支架6 〇、以及安裝於兩側 5 3…的左右的一對後副框架6 1…。 側框架53，是由較中央框架54更大直徑的單一 彎曲所形成，是一體地具有：從頭管1 2朝下方垂下 框架部53a、與該下框架部53a的下端相連，並且在 板2 6的下方朝後方延伸的低框架部5 3 b、與低框架部 的後端相連，並且在上述腳踏板2 6的後方朝上方立 立起框架部53c、以及用來支承乘車用座墊30而從 框架部5 3 c的上端朝後方延伸的座墊軌道部5 3 d ;兩 架53…的座墊軌道部53d…是傾斜形成爲：隨著朝向 而相互接近。 前部橫支架5 7，是連結於兩側框架5 3…的下框 5 3 a…的中間部之間，第一中間部橫支架5 8，是連結 從上 的中 方朝 的連 於上 的下 間， 結於 、在 53… 框架 框架 管體 的下 腳踏 ；53b 起的 立起 側框 後方 架部 於兩 -19- (16) 1297652 側框架53…的立起框架部53c…的上部之間，第二中間部 橫支架6 0是連結於兩側框架5 3…的座墊軌道部5 3 d的中 間部之間。 兩側框架53…的下框架部53a…的上端部，是接合於 頭管1 2，在這些下框架部5 3 a…的對於頭管1 2的接合部 分的下部及頭管1 2之間，設置有下部角撐板62。而在兩 下框架部5 3 a的對於頭管1 2的接合部分的上部及頭管1 2 之間，是設置有上部角撐板6 3，中央框架5 4的上端部是 接合於該上部角撐板63。 上述低框架部5 3 b，是由：從下框架部5 3 a的下端朝 後方大致水平地延伸的水平部分5 3 b a、以及從該水平部 分53 ba的後端朝斜後上方傾斜的傾斜部分53 bb所構成。 上述連結框架5 5，是配置於：較側框架5 3的低框架 部5 3 b更上方且較腳踏板2 6的更下方處，且朝前後延 伸，其前端是接合在側框架5 3的下框架部5 3 a的下部， 其後端是接合在側框架53的低框架部53b的傾斜部分 53bb ° 在上述兩側框架5 3…，是安裝著：將至少一部分配 置在立起框架部5 3 c…的後方的左右的一對後副框架 61…，在該實施例，後副框架61，是配置在：側框架53 的低框架部5 3 b的下方且在立起框架部5 3 c的後方，後副 框架61的前端，在較連結框架5 5的後端的接合部更前 方，被接合在低框架部53b的傾斜部分53bb的前端後面 部，後副框架6 1的後端，是接合在側框架5 3的座墊軌道 -20- (17) 1297652 部5 3 d的靠前部的下面部。 並且兩後副框架6 1…的中間部，是彎曲成接近側框 架53…的立起框架部53c…側，在較該彎曲部更下方且在 兩側框架5 3…及兩後副框架6丨…之間，是分別設置有樞 支板64…。 後副框架6 1，是由較側框架5 3更小直徑的管材所構 成，從側面觀察，側框架5 3的低框架部5 3 b及立起框架 部5 3 c、與由小直徑的管材所構成的後副框架6 1，是配置 成：在腳踏板26的下方及後方成對並排。 如第6圖所示，在上述兩側框架5 3的下框架部5 3 a 及上述中央框架54之間，配置有散熱水箱37，上述腳踏 板26的上面部，是設定在較散熱水箱3 7的上下方向中心 位置CP更下方的位置。 如第9圖所示，在散熱水箱3 7的上部所設置的左右 的一對支承腕部3 8、3 8，是被彈性支承於，在前部橫支 架5 7所設置的左右的一對支架6 5、6 5。而從前方側將散 熱水箱3 7的下部予以覆蓋的防護管40的左右兩端’是被 接合在兩側框架53…的下框架部53a…的下端前面部’在 朝向該防護管4 0的中央部的支架4 1，彈性支承者#熱水 箱3 7的下部中央部。 合倂參照第1 〇圖，在朝向機車的行進方向目U方的狀 態，位於左側的側框架5 3的低框架部5 3 b及立起框架部 5 3c的連設部，是固定安裝著朝後方突出的支承板67 ’在 動力單元P的引擎E的下部是設置有托架44 ° -21 - (18) 1297652 連桿機構72，是具備有：在上述樞支板64經由車 框架側樞支軸7 3而可轉動地被支承著的左右的一對第 連桿臂74、其一端部經由連結軸75而可轉動地被連結 第一連桿臂74的另一端部的第二連桿臂76、被固定在 二連桿臂76的另一端部，並且可轉動地被支承在托架 的動力單元側樞支軸77、在兩第二連桿臂76之中，在 向機車的行進方向前方的狀態，在位於左側的第二連桿 φ 76的外側，並且其一端部經由連結管78而連結在第二 桿臂76的中間部，並且另一端部連結於上述動力單元 樞支軸77的端部的臂部79、以及在左側的第二連桿臂 ' 及上述臂部79之間，其一端部被連結於上述動力單元 ' 樞支軸77而朝上方延伸，並且另一端部經由樞軸80而 連結於支承板67的限制臂81 ;限制臂5 1的中間部， 經由橡膠軸襯 8 2及連結軸 8 3而被連結於上述支承 67 ° • 並且在限制臂81是一體地設置有朝上方突出的限 ^ 突部8 4，用來收容該限制突部8 4的凹部8 5是設置在 承板67，繞著樞軸80的軸線的限制臂5 1的轉動，是 限制在：在上述凹部85內上述限制突部84可移動的 圍。 並且上述連桿機構72的車體框架側樞支軸73，是 置在：較側框架5 3的立起框架部5 3 c的後面部更前 處，上述動力單元側樞支軸77，如第6圖所示，在朝 與前輪WF的旋轉軸線垂直相交的平面的投影圖上，是 體 到 第 44 朝 臂 連 側 76 側 被 是 板 制 支 被 範 配 方 向 配 -22- (19) (19)1297652 置在：以上述車把把手22爲中心而通過前輪WF的旋轉 中心的假想圓弧C內。 接著針對第二實施例的作用來加以說明，車體框架 FB，具備有：分別具有，從頭管12朝下方垂下的下框架 部5 3 a及從該下框架部5 3 a的下端朝後方延伸的低框架部 5 3 b，的左右的一對側框架5 3…、在兩側框架5 3…之間， 從頭管12朝下方垂下的中央框架54、在較兩側框架53… 的上述低框架部53b…更上方，並且其前端部連結於上述 下框架部53a···，後端部連結於上述低框架部53b…的左 右的一對連結框架55···、連結於上述兩側框架53···的上 述低框架部5 3 b…之間的支承支架5 6、在兩側框架5 3… 之間，從頭管1 2通過側框架5 3…附近而朝下方垂下，並 且下端部連結於支承支架5 6的中央框架54 ;上述連結框 架55…是配置在低底板式的腳踏板26的下方，所以可充 分地將兩側框架5 3…的低框架5 3…的位置設定到下方， 用來將兩側框架53···、及在兩側框架53···之間從頭管12 朝下方垂下的中央框架54予以補強的支承支架56及連結 框架55···，配置在低框架部53b…的上方且在腳踏板26 的下方，藉此能形成確保有充分的置腳空間的平坦的腳踏 板26，而能提昇使用方便性，並且能提昇車體框架FB的 縱向剛性及扭轉剛性的平衡性。 側框架5 3，是由單一管體彎曲所形成，是一體地具 有：從頭管12朝下方垂下的下框架部53a、與該下框架 部53a的下端相連，並且通過腳踏板26的下方朝後方延 -23- (20) (20)1297652 伸的低框架部53b、與低框架部53b的後端相連，並且在 上述腳踏板26的後方朝上方立起的立起框架部53c、以 及從立起框架部5 3 c的上端朝後方延伸的座墊軌道部 5 3 d ;則可減低零件數量，並且可減低車體框架FB的組 裝程序。 側框架53、較側框架53更小直徑的中央框架54、及 較側框架5 3更小直徑的後副框架6 1，從側面觀察是配置 成：在腳踏板2 6的前方、下方、後方成對並排，所以可 構成輕量且高剛性的車體框架FA。 在兩側框架53…的下框架部53 a…及中央框架54之 間，配置了散熱水箱37，而可擴大平坦的腳踏板26的空 間，加長散熱水箱3 7的上下長度，增大散熱水箱3 7的容 量，則能提高引擎E的冷卻性能。除此之外，腳踏板26 的上面部是設定在較散熱水箱3 7的上下方向中心位置CP 更下方的位置，所以可以將腳踏板26的位置盡量設置到 下方位置，而可提升上下車的方便性。 在兩側框架53···，是安裝著：將至少一部分配置在 立起框架部53c…的後方的左右的一對後副框架61…，在 兩側框架53…及兩側框架53…之間所設的樞支板64·.·， 是支承著：在車體框架FB及動力單元P之間所設置的連 桿機構72的車體框架側樞支軸73，所以可避免側框架1 3 的大型化，且提高車體框架側樞支軸73周圍的剛性，藉 由避免側框架5 3的大型化，則能擴大腳踏板2 6的後方空 間。 -24 - (21) 1297652 並且上述連桿機構7 2的車體框架側樞支軸 置在較立起框架部53c的後面部更前方處，所以 將連桿機構7 2的車體框架側樞支軸7 3配置到前 而能夠縮短輪距。 兩後副框架6 1…的中間部是彎曲成，接近 側框架53…的立起框架部53c…側，所以能避免 P對於後副框架6 1…的干涉，而將動力單元p… 方側，而可更縮短輪距。 並且在對於與前輪WF的旋轉軸線垂直相交 投影圖上，在以車把把手22爲中心而通過前輪 轉中心的假想圓弧C內，藉由配置連桿機構72 元側樞支軸77，則可盡量將連桿機構72的動力 支軸77配置到前方位置，而可更縮短輪距。 以上，雖然說明了本發明的實施例，而本發 於上述實施例，只要不脫離本發明的申請專利範 進行各種設計上的變更。 【圖式簡單說明】 第1圖是第一實施例的速克達型車輛的側面 第2圖是車體框架的側面圖。 第3圖是從第2圖的箭頭3方向觀察的視圖 第4圖是從第2圖的箭頭4方向觀察的正面 第5圖是顯示連桿機構的構造的縱剖側面圖 第6圖是第二實施例的速克達型車輛的側面 73，是配 能盡量地 方位置， 於上述兩 動力單元 配置到前 的平面的 WF的旋 的動力單 單元側樞 明並不限 圍，而可 圖。 圖。 〇 圖。 -25- (22) (22)1297652 第7圖是車體框架的側面圖。 第8圖是從第7圖的箭頭8方向觀察的俯視圖。 第9圖是從第7圖的箭頭9方向觀察的正面圖。 第1 〇圖是顯示連桿機構的構造的側面圖。 【主要元件符號說明】 11 :前叉 12 :頭管 13、 5 3 :側框架 13a、53a:下框架部 1 3 b、5 3 b :低框架部 1 3 c、5 3 c :立起框架部 14、 54 :中央框架 15 :主管 1 7、5 5 :連結框架 21 :轉向車把 22 :車把把手 26 :腳踏板 3 1 :角撐板 3 2 : U字型部 3 3 ·支承部 3 7 :散熱水箱 42、72 :連桿機構 45、73 :車體框架側樞支軸 -26- (23) (23)12976521297652 and can shorten the track. The intermediate portions of the two rear sub-frames 18 are curved so as to be close to the side of the standing frame portion 1 3 c... of the side frames 1 3, so that interference of P with respect to the rear sub-frames 18 can be avoided, and the power unit P is ... square side, and the track length can be shortened. And in the projection plane perpendicular to the rotation axis of the front wheel WF, the imaginary arc C passing through the center of the front wheel is centered on the handlebar handle 22, and the pivot mechanism is provided by the link mechanism 42. Then, the movable support shaft 49 of the link mechanism 42 can be disposed as far as possible to the front position, and the track distance can be further shortened. 6 to 10 are side views showing the second real-world diagram of the present invention, which is a scooter type vehicle, FIG. 7 is a block diagram of the vehicle body, and FIG. 8 is a view from the direction of arrow 8 of FIG. The top view is a front view as seen from the direction of the arrow 9 in Fig. 7, and a side view showing the structure of the link mechanism. In the description of the second embodiment, the same reference numerals are attached to the first embodiment, and only the drawings are omitted. First, in the sixth figure, the vehicle has a low floor type pedal type. The body frame FB is supported by the engine E and the front of the transmission Ρ by the link machine, and is provided with a rear suspension between the rear part of the body frame FB and the power unit. Unit 23. Referring to Figures 7 to 9, the vehicle body frame FB, the head pipe 1 2, the front end portion thereof is joined to the left and right sides of the head pipe 12, and the power unit is disposed to the front plane of the WF. The rotary power single f-unit side pivoting column, the side of the sixth frame is shown in the figure, the 9th 〇 diagram is the part of the display, the description of the speed of the 6-speed yoke 72, the rear of the power unit : ί 's pair of sides -18- (15) 1297652 frame 53 ····, consisting of pipes, between the rain side frames 53..., the head pipe 1 2 passes near the front of the side frames 5 3... The lower hanging central frame 54 extends forward and backward of the footrest 26 provided in the body casing 24 and the both end portions thereof are coupled to the both side frames 5 3 ... the joint frame 55 ··· is disposed in the rain joint frame 55 Below the ..., the support bracket 56 that connects the ends of the center frame 54 and the front portion of the side frames 53 are joined to each other and joined to the front of the lower end of the main pipe 15 The first intermediate portion lateral bracket 58 between the horizontal bracket 57 and the intermediate portion of the side frames 5 3... is smaller than the first intermediate portion lateral bracket The rear portion of the second frame is connected to the second intermediate portion lateral bracket 5 9 between the intermediate portions of the side frames, the rear cross bracket 6 连结 between the rear ends of the side surfaces 5 3 , and the two sides are attached to the sides. The left and right pair of rear sub-frames 6 1 . . . The side frame 53 is formed by a single bending having a larger diameter than the center frame 54 , and integrally includes a frame portion 53 a that is suspended downward from the head pipe 1 2 , a lower frame portion 53b extending to the lower end of the lower frame portion 53a and extending rearward of the plate 26, connected to the rear end of the lower frame portion, and standing upward at the rear of the footboard 26 The frame portion 53c is erected, and the seat rail portion 53d for extending from the upper end of the frame portion 53c to support the passenger seat cushion 30; the seat rail portion 53d of the two frames 53 is inclined It is formed so as to approach each other with the orientation. The front cross bracket 57 is connected between the intermediate portions of the lower frames 5 3 a of the side frames 5 3 ..., and the first intermediate cross brackets 5 8 are connected. From the upper part of the upper side of the upper side connected to the lower part, the lower foot of the frame of the frame frame; The standing side frame rear frame portion from 53b is between the upper portions of the rising frame portions 53c of the two 19-(16) 1297652 side frames 53..., and the second intermediate portion horizontal bracket 60 is coupled to the side frames 5 Between the intermediate portions of the seat rail portion 5 3 d of the third... The upper end portions of the lower frame portions 53a of the two side frames 53 are joined to the head pipe 12, and the lower frame portions 5 3 a... A lower gusset 62 is disposed between the lower portion of the joint portion of the head pipe 12 and the head pipe 12. An upper gusset 63 is disposed between the upper portion of the joint portion of the head frame 12 and the head tube 1 2 of the frame portion 523a, and the upper end portion of the center frame 514 is joined to the upper portion. Gusset 63. The lower frame portion 5 3 b is a horizontal portion 5 3 ba extending substantially horizontally rearward from the lower end of the lower frame portion 53 a, and a slope inclined obliquely rearward from the rear end of the horizontal portion 53 ba Part 53 bb is composed. The connecting frame 5 5 is disposed above the lower frame portion 53 b of the side frame 53 and below the footrest 26, and extends forward and backward, and the front end thereof is joined to the side frame 53. The lower portion of the lower frame portion 5 3 a has a rear end that is an inclined portion 53bb that is joined to the lower frame portion 53b of the side frame 53. The two side frames 5 3 ... are mounted: at least a portion is disposed in the standing frame In the embodiment, the rear sub-frame 61 is disposed below the lower frame portion 53b of the side frame 53 and in the upright frame portion. At the rear of the rear frame 5, the front end of the rear sub-frame 61 is joined to the rear end portion of the inclined portion 53bb of the lower frame portion 53b, and the rear end of the rear sub-frame 61 is further forward than the joint portion of the rear end of the connecting frame 55. The end is joined to the lower portion of the front portion of the seat rail -20-(17) 1297652 portion 5 3 d of the side frame 53. Further, the intermediate portions of the two rear sub-frames 6 1 are curved toward the side of the rising frame portion 53c ... which is closer to the side frame 53 , and is lower than the curved portion and on both side frames 5 3 ... and the rear sub-frame 6 Between each other, a pivotal plate 64 is provided. The rear sub-frame 6 1 is composed of a pipe having a smaller diameter than the side frame 5 3 , and the low frame portion 5 3 b of the side frame 53 and the rising frame portion 5 3 c as viewed from the side, and the small-diameter The rear sub-frames 161 formed of pipes are arranged side by side in the lower and rear sides of the footboard 26. As shown in Fig. 6, a heat dissipating water tank 37 is disposed between the lower frame portion 53a of the both side frames 533 and the center frame 54, and the upper surface of the footrest 26 is set in the radiator tank. 3 7 is the position below the center position CP in the up and down direction. As shown in Fig. 9, the pair of left and right support arm portions 38, 38 which are provided in the upper portion of the radiator tank 37 are elastically supported, and a pair of left and right sides provided in the front cross bracket 57 Brackets 6 5, 6 5 . On the front side, the left and right ends ' of the protective tube 40 covering the lower portion of the heat-dissipating water tank 37 are joined to the lower end portion of the lower frame portion 53a of the both side frames 53... in the front side toward the protective tube 40 The center portion of the bracket 4 1, the elastic supporter # hot water tank 3 7 lower central portion. Referring to the first drawing, in a state in which the direction toward the traveling direction of the locomotive is U, the lower frame portion 53b of the side frame 53 on the left side and the connecting portion of the standing frame portion 53c are fixedly mounted. The support plate 67' protruding rearward is provided with a bracket 44 ° -21 - (18) 1297652 link mechanism 72 at the lower portion of the engine E of the power unit P, and is provided with the pivot plate 64 passing through the frame side of the vehicle A pair of right and left pair of link arms 74 rotatably supported by the pivot shafts 73 and a second end of the first link arm 74 rotatably coupled to the other end of the first link arm 74 via the connecting shaft 75 The lever arm 76 is fixed to the other end of the two-link arm 76 and rotatably supported by the power unit side pivot shaft 77 of the bracket, among the two second link arms 76, to the locomotive The state in front of the traveling direction is outside the second link φ 76 on the left side, and one end portion thereof is coupled to the intermediate portion of the second lever arm 76 via the connecting pipe 78, and the other end portion is coupled to the power unit pivot branch An arm portion 79 at an end of the shaft 77, and a second link arm ' on the left side and the arm portion 79 One end portion is connected to the power unit 'the pivot shaft 77 and extends upward, and the other end portion is coupled to the restriction arm 81 of the support plate 67 via the pivot 80; the intermediate portion of the arm 51 is restricted via the rubber shaft. The lining 8 2 and the connecting shaft 8 3 are coupled to the support 67 ° • and the restricting arm 81 is integrally provided with a restricting portion 8 4 protruding upward to accommodate the recess 8 of the restricting projection 8 4 5 is a support plate 67 provided, and the rotation of the restriction arm 51 around the axis of the pivot 80 is restricted to a circumference in which the restriction projection 84 is movable in the recess 85. Further, the body frame side pivot shaft 73 of the link mechanism 72 is disposed further forward than the rear portion of the upright frame portion 53c of the side frame 53, and the power unit side pivot shaft 77 is As shown in Fig. 6, on the projection view of the plane perpendicularly intersecting the rotation axis of the front wheel WF, the body to the 44th side of the arm side 76 is the plate branch is matched with the direction -22- (19) (19) 1297652 is placed in the virtual arc C passing through the center of rotation of the front wheel WF centering on the handlebar handle 22 described above. Next, the operation of the second embodiment will be described. The vehicle body frame FB includes a lower frame portion 533a that hangs downward from the head pipe 12 and a rearward end from the lower end of the lower frame portion 533a. The lower frame portion 5 3 b, the left and right pair of side frames 5 3 ..., between the side frames 5 3 ..., the center frame 54 that hangs downward from the head pipe 12, and the lower side frame 53 ... The frame portion 53b is further above, and the front end portion is coupled to the lower frame portion 53a.., and the rear end portion is coupled to the left and right pair of connecting frames 55··· of the low frame portion 53b... The support brackets 56 between the lower frame portions 5 3 b... of the frame 53···, between the side frames 5 3..., hang down from the head pipe 1 2 near the side frames 5 3..., and the lower end The portion is coupled to the center frame 54 of the support bracket 56. The joint frame 55 is disposed below the lower floor type footrest 26, so that the positions of the lower frames 5 3 of the both side frames 5 3 can be sufficiently Set to the bottom, used to bring the side frames 53···, and the frames on both sides 53··· The support bracket 56 and the connecting frame 55, which are reinforced between the center frame 54 which is suspended downward from the head pipe 12, are disposed above the lower frame portion 53b... below the footrest 26, thereby ensuring sufficient securing The flat footrest 26 of the foot space can improve the usability and improve the balance between the longitudinal rigidity and the torsional rigidity of the body frame FB. The side frame 53 is formed by bending a single pipe body, and integrally includes a lower frame portion 53a that hangs downward from the head pipe 12, is connected to a lower end of the lower frame portion 53a, and passes through the lower side of the footboard 26 toward a lower frame portion 53b extending rearward -23-(20) (20)1297652, and a rising frame portion 53c that is connected to the rear end of the lower frame portion 53b and that rises upward at the rear of the foot board 26, and The seat rail portion 53d extending from the upper end of the upright frame portion 53c to the rear can reduce the number of parts and reduce the assembly procedure of the body frame FB. The side frame 53, the center frame 54 having a smaller diameter than the side frames 53, and the rear sub-frame 6 1 having a smaller diameter than the side frames 53 are disposed in front of and below the footrest 26 as viewed from the side. The rear side is arranged side by side, so that a lightweight and highly rigid body frame FA can be constructed. The heat dissipation water tank 37 is disposed between the lower frame portions 53a of the both side frames 53 and the center frame 54, and the space of the flat footrest 26 can be enlarged, and the upper and lower lengths of the heat dissipation water tanks 37 can be lengthened to increase heat dissipation. The capacity of the water tank 37 can improve the cooling performance of the engine E. In addition, the upper surface of the footrest 26 is set at a position lower than the center position CP of the heat-dissipating water tank 37, so that the position of the footrest 26 can be set as far as possible to the lower position, and the upper surface can be raised. The convenience of getting off the bus. The two side frames 53 are mounted on the right and left pair of rear sub-frames 61 at least partially disposed behind the rising frame portions 53c, and the two side frames 53 and the two side frames 53 are... The pivotal plate 64.. is provided to support the body frame side pivot shaft 73 of the link mechanism 72 provided between the vehicle body frame FB and the power unit P, so that the side frame 1 can be avoided. When the size of the third frame is increased, the rigidity around the side frame pivot shaft 73 of the vehicle body frame is increased, and the rear space of the footrest 26 can be enlarged by avoiding an increase in the size of the side frame 53. -24 - (21) 1297652 and the body frame side pivot shaft of the above-mentioned link mechanism 7 2 is placed forward of the rear portion of the upright frame portion 53c, so that the side frame of the body frame of the link mechanism 7 2 The support shaft 7 3 is disposed to the front to shorten the track. The intermediate portions of the rear frames 6 1 are curved so as to be close to the side of the standing frame portion 53c of the side frames 53, so that the interference of the P to the rear sub-frames 6 1 can be avoided, and the power unit p... , and the track length can be shortened. And in the projection view perpendicular to the rotation axis of the front wheel WF, in the imaginary arc C centered on the center of the front wheel by the handlebar handle 22, by arranging the link mechanism 72 to pivot the shaft 77, As far as possible, the power fulcrum 77 of the link mechanism 72 can be disposed to the front position, and the track distance can be further shortened. The embodiments of the present invention have been described above, and the present invention has been described in the above embodiments, and various design changes are made without departing from the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side view of a scooter type vehicle of a first embodiment. Fig. 2 is a side view of a vehicle body frame. 3 is a view seen from the direction of arrow 3 in FIG. 2, FIG. 4 is a front view seen from the direction of arrow 4 of FIG. 2, and FIG. 5 is a longitudinal sectional side view showing the structure of the link mechanism. FIG. The side 73 of the scooter type vehicle of the second embodiment is a position where the energy is as far as possible, and the side of the rotating power unit of the WF in which the two power units are arranged to the front is pivoted and not limited. Figure. 〇 Figure. -25- (22) (22) 1297652 Figure 7 is a side view of the body frame. Fig. 8 is a plan view as seen from the direction of arrow 8 of Fig. 7. Fig. 9 is a front view as seen from the direction of arrow 9 in Fig. 7. The first drawing is a side view showing the structure of the link mechanism. [Description of main component symbols] 11: Front fork 12: Head pipe 13, 5 3: Side frames 13a, 53a: Lower frame portion 1 3 b, 5 3 b: Low frame portion 1 3 c, 5 3 c: Stand up frame Parts 14, 54: Center frame 15: Main pipe 1 7, 5 5 : Connection frame 21 : Steering handlebar 22 : Handlebar handle 26 : Foot pedal 3 1 : Gusset 3 2 : U-shaped part 3 3 · Support Part 3 7 : Cooling water tank 42, 72: Linkage mechanism 45, 73: Side frame pivot shaft -26- (23) (23) 1129652
4 9、7 7 :動力單元側樞支軸 C :假想圓弧 FA、FB :車體框架 P :動力單元 WF :前輪 -274 9, 7 7 : Power unit side pivot shaft C : Hypothetical arc FA, FB : Body frame P : Power unit WF : Front wheel -27