JP2001088763A5 - - Google Patents

Description

Then, in order to solve the above-mentioned problems, as described in claim 5, the crankshaft, the drive shaft and the driven shaft of the V-belt type automatic transmission are arranged on substantially horizontal coplanar, and at least. The drive shaft and the driven shaft are arranged in the lower part of the vehicle body below the driver's seat, and a storage container such as a fuel tank or an article storage chamber is arranged above the V-belt type automatic transmission.
Further, in order to solve the above-mentioned problems, as described in claim 6, the vehicle body between the head pipe that supports the front fork that supports the front wheels so as to be steerable to the left and right and the driver's seat for seating the occupant is lowered. It is curved in a substantially U shape to form a footrest space that extends in the width direction of the vehicle body, and forms a footrest floor on the left and right sides of the bottom where occupants can rest their feet, and extends back and forth to the center of this footrest floor. In a scooter-type motorcycle with a tunnel shape that protrudes upward, an engine that is integrally equipped with a transmission at the rear and two cylinders at the front that are arranged in a V shape in a side view is fixed to the vehicle body. The crankshaft of the engine is arranged below the bottom of the foot passage space, and the footrest floor is arranged at a height overlapping with the cylinder arranged on the lower side when viewed from the side of the vehicle.
Furthermore, in order to solve the above-mentioned problems, as described in claim 7, the vehicle body frame below the footrest floor is arranged below the cylinder, the engine case, and the transmission in the vehicle side view. It is extended in the front-rear direction of the vehicle to a height that overlaps with.

As shown in FIGS. 2, 3 and 4, the engine 7 is mainly composed of an engine case 21 and cylinders 22a and 22b, and the reciprocating motion of the piston 23 in the cylinders 22a and 22b is transmitted through the connecting rod 24 to the engine case 21. The crankshaft 25 extending in the vehicle width direction is reciprocated. Further, the engine 7 is a so-called V-type engine in which two cylinders 22a and 22b sharing one crankshaft 25 are arranged with a sandwiching angle of less than 90 ° in a side view. The crankshaft 25 of the engine 7 is arranged below the bottom of the foot passage space 18. The engine 7 may be an L-type engine (not shown) in which the sandwiching angle between the two cylinders 22a and 22b is 90 °.

[0042]
【Effect of the invention】
As described above, according to the scooter type motorcycle according to the present invention, the footrest floor can be formed widely, and the riding feeling and maneuverability are improved.

Claims (7)

  The vehicle body between the head pipe that supports the front fork that supports the front wheels so that it can be steered left and right and the occupant seating driving seat is curved downward in a substantially U shape to form a foot-through space that extends in the width direction of the vehicle body In the scooter type motorcycle in which a footrest floor on which the occupant places his / her feet is formed on the left and right sides of the bottom portion, and a tunnel shape is formed in the center portion of the footrest floor so as to extend forward and backward and project upward, 39 is integrally provided, and an engine 7 having two cylinders 22a and 22b arranged in a V shape in a side view is fixed to the vehicle body 1 and the crankshaft 25 of the engine 7 is connected to the foot space 18. A scooter type motorcycle characterized by being arranged below the bottom of the motorcycle.   Among the two cylinders 22a and 22b, the cylinder 22a disposed on the upper side in a side view is oriented toward the head pipe 3, and is disposed along the rising portion 26 formed in front of the foot passage space 18, 2. The scooter type motorcycle according to claim 1, wherein a center line 27 of the upper cylinder 22a is arranged so as to substantially coincide with a traveling direction center line 28 of the vehicle body 1.   An engine intake system device 12 is disposed in a space formed between the upper cylinder 22a and the head pipe 3, and an intake pipe 30 is connected from the engine intake system device 12 to the upper surfaces of the cylinders 22a and 22b. Item 2. The scooter type motorcycle according to item 1.   The transmission 39 is a V-belt type automatic transmission, and includes a drive shaft 41 having a drive pulley 40 and a driven shaft 43 having a driven pulley 42, and a V-belt 47 is interposed between the pulleys 40 and 42. The drive shaft 41 is provided separately from the crankshaft 25, and the drive pulley 40 and the driven pulley 42 are arranged so that the winding axis 48 of the V-belt 47 is a center line in the traveling direction of the vehicle body 1. The scooter type motorcycle according to claim 1, wherein the scooter type motorcycle is arranged so as to substantially coincide with 28.   The crankshaft 25, the drive shaft 41 of the V-belt type automatic transmission 39 and the driven shaft 43 are arranged on a substantially horizontal plane, and at least the drive shaft 41 and the driven shaft 43 are disposed below the driving seat 16. The scooter type motorcycle according to claim 4, wherein a storage container such as a fuel tank 14 and an article storage chamber 15 is disposed above the V-belt type automatic transmission 39 and disposed below the vehicle body 1. The vehicle body between the head pipe that supports the front fork that supports the front wheels so that it can be steered left and right and the occupant seating driving seat is curved downward in a substantially U shape to form a foot-through space that extends in the width direction of the vehicle body In the scooter type motorcycle in which a footrest floor on which the occupant places his / her feet is formed on the left and right sides of the bottom portion, and a tunnel shape is formed in the center portion of the footrest floor so as to extend forward and backward and project upward, 39 is integrally provided, and an engine 7 having two cylinders 22a and 22b arranged in a V shape in a side view is fixed to the vehicle body 1 and the crankshaft 25 of the engine 7 is connected to the foot space 18. The footrest floor 19 is disposed at a height that overlaps with the cylinder 22b disposed on the lower side in a vehicle side view. Scooter-type motorcycle to. The vehicle body frame 2 below the footrest floor 19 as viewed from the side of the vehicle is extended in the vehicle front-rear direction to a height that overlaps the cylinder 22b, the engine case 21, and the transmission 39 arranged on the lower side. 6. The scooter type motorcycle according to 6.