Power transmission device in autobicycle

Abstract

Abstract PURPOSE:To arrange the region of variable speed in a wide range obtained from the overall ratio of speed change between both main and subtransmissions without worsening the drive performance or drive stability, by interposing the subtransmission capable of replacing its gear group in a state of good weight balance between the main transmission and a rear wheel transmission mechanism. CONSTITUTION:When an engine E is driven, a counter shaft 6 is driven from a crankshaft 3 through a main transmission Tm. If a shifter 26 provided in a subtransmission Ts in a subtransmission case 11 is shifted toward the left side, a gear 21 is coupled to the shaft 6, and its rotary motion is transmitted to a transmission shaft 30 through a gear 31. In this way, the rotary motion of the secondarily speed changed transmission shaft 30 is transmitted to a rear wheel W through bevel gears 34, 35, driven shaft 36, drive shaft 37 and final bevel gears 39, 40. If the shifter 26 is placed rightward, speed change ratio different from the before described can be obtained. While a cover 15 is removed, and a subtransmission gear group can be easily replaced with a gear group of different speed change ratio.

Inventors

• 👤 Takamasa Onda
• 👤 Hiroshi Kawasaki
• 👤 Mitsukuni Misawa

Bibliographic Details