| 摘要 |
PURPOSE:To prevent breakage of balancer gears by providing balancer gears to two balancer shafts and making one balancer gear engage to a crank gear and the other balancer gear engage to a transmission gear engaging to the crank gear. CONSTITUTION:Two balancer shafts 13, 14 are provided with balancer gears 16, 17 respectively and one balancer gear 16 is engaged to a crank gear 18 and the other balancer gear 17 is engaged to a transmission gear 21 engaging to the crank gear 18. By this construction the suction phenomena of the balancer gears 16, 17 can be eliminated and the balancer gears 16, 17 can be protected from being broken. |
