TH35677B - A motorcycle whose center of gravity has been lowered. - Google Patents

Abstract

DC60 The purpose of this invention is to achieve a motorcycle where the location of the main frame parts To hang the power unit is lowered while maintaining a minimum height of the power unit above the ground. The motorcycle has a frame (2) and the power unit (20) and frame (2) have a main frame (4). Extending backward from the control head tube (3) and the power unit (20) there is the driving source (21) , the transmission device (33 and 34) attached to the output end of the driving source (21). and chambers (31) for the insertion of power transmission equipment (33 and 34), and are suspended from the main frame (4), where the power unit (20) chamber (31) has a groove (65) opening to The main frame (4) and hub section (110) are constructed on the bottom floor (65a) of the groove (65) and are suspended from the main frame (4). Location of the main frame parts To hang the power unit is lowered while maintaining a minimum height of the power unit above the ground. The motorcycle has a frame (2) and the power unit (20) and frame (2) have a main frame (4). Extending backward from the control head tube (3) and the power unit (20) there is the driving source (21) , the transmission device (33 and 34) attached to the output end of the driving source (21). and chambers (31) for the insertion of power transmission equipment (33 and 34), and are suspended from the main frame (4), where the power unit (20) chamber (31) has a groove (65) opening to The main frame parts (4) and the hub part (110) are built on the bottom floor (65a) side of the groove (65) and are suspended from the main frame (4).

Claims (11)

1. The motorcycle assembly consists of: a header pipe; a main structural component extending backward from the header pipe; a power unit comprising the drive source and transmission device attached to the output end of the drive source; a transmission device mounted in the chassis; a transmission device consisting of a centrifugal clutch and a gear set positioned at the output end of the centrifugal clutch. The centrifugal clutch has a larger diameter than the gear set. The chassis comprises grooves open directly to the main structural component and grooves created offset from the centrifugal clutch. A hub is constructed on the base of the grooves. The hub is suspended from the main structural component to the power unit, which is suspended from the main structural component. 2. The bicycle of claim 1, whereby a support extends downward from the main structural element, the support having its lower end connected to the hub, and the joint between the lower end of the support and the hub is positioned in a groove. 3. The motorcycle of claim 1, whereby the chassis is further assembled with a first and a second chamber, a conventionally mounted gear set in the first chamber and a conventionally mounted centrifugal clutch in the second chamber, the first and second chambers are connected by common longitudinal connections and the hubs are provided on the first chamber. 4. Motorcycle, claim 1, where the power source consists of an engine with a crankcase, a crankcase containing the crankshaft, cylinders conventionally protruding forward from the front end of the crankcase, and a body conventionally mounted rear of the crankcase and integrated into the crankcase. 5. The motorcycle of claim 4 where the main structural element is generally bent downwards as it extends rearward from the head tube and the base of the groove is generally bent downwards as it extends straight towards the rear of the body. 6. The motorcycle consists of a frame comprising a head tube and main structural components extending rearward from the head tube. The power unit is suspended from the main structural components. The power unit comprises the drive source. The drive source comprises the chassis. A continuously variable transmission (CVT) driven by a belt is attached to the drive source chassis and comprises an upper extension to a position higher than the chassis in a typical vertical configuration. The continuously variable transmission (CVT) driven by a belt comprises the first pulley which can be driven by the drive source. The second pulley is connected to the transmission unit housed in the chassis. The belt connects the first pulley to the second pulley. The first pulley, the second pulley, and the belt are installed in the CVT chassis. The CVT chassis comprises an upper section extending higher than the chassis. The chassis comprises the hub section suspended from the main structural components. The hub section is mounted on the upper section of the chassis and the hub section is arranged. It should be positioned so that it overlaps with the upper part of the belt-driven continuously variable transmission (CVT) when viewed from the side, and the upper part of the CVT housing is generally aligned with the hub in the longitudinal direction of the vehicle. 7. The motorcycle of claim 6, where the source of propulsion consists of an engine, an engine consisting of a crankcase, a crankshaft mounted in the crankcase, a cylinder protruding forward of the front end of the crankcase, and a body positioned behind the crankcase and integrated with the crankcase. 8. The motorcycle of claim 7, where a continuously variable transmission unit extends longitudinally into the power unit on one side of the crankcase and on one side of the chassis, and the engine cylinder consists of a shaft extending longitudinally into the power unit and offset to the belt-driven continuously variable transmission unit from the longitudinal center of the structure. 9. The motorcycle of claim 6 where the transmission device consists of a centrifugal clutch receiving torque from a second pulley, the centrifugal clutch and second pulley arranged in the general width-of-vehicle direction, and the hub is positioned in a non-conflicting location with the centrifugal clutch and second pulley. 10. The motorcycle of claim 6, where the support protrudes from the main structural element, the support consisting of a lower part connected to the hub, and the joint between the hub and the support overlaps, a continuously variable transmission type driven by a belt when the power unit is viewed from one side. 11. The motorcycle of claim 6, where the main structural part is tilted downward as it extends backward from the head tube, the upper part of the body is tilted downward as it extends backward, and the hub is positioned at the rear of the body.