Patent ID: 8499655
Filing Date: 2013-08-06
Classification: F16H,Y10T

Abstract:
1. A multistage transmission where a plurality of driving gears and a plurality of driven gears are journalled to mutually parallel gear shafts in a constantly engaged state for every speed, the plurality of gears of either of the driving gears or the driven gears are fixed to one of the gear shafts, and a shift is executed by switching fitting means which are provided between the other plurality of gears and another one of the gear shafts and which fit each other by shift driving means and driving a new gear; wherein the fitting means includes a first fitting device for normal rotation and a second fitting device for reverse rotation, and the fitting means is fittable in a rotation direction of the normal rotation in which power from an internal combustion engine is transmitted and a rotation direction of the reverse rotation in which power from the side of a driving wheel is transmitted; wherein each fitting device is provided with: wherein the shift driving means is provided with: wherein a regulating rod integrally moved with the control rod is provided to the corresponding one of the gear shafts with the regulating rod slidingly touched to the corresponding one of the cam rods; wherein a cutout into which the pin can be fitted together with the cam groove of the slidingly touched cam rod is formed corresponding to each cam groove in the regulating rod; wherein the cutout of the regulating rod corresponding to a cam groove of a cam rod for normal rotation is formed longer than a cam groove on the reverse side to a moving direction of the control rod in an upward shift in a state in which shifted speed is established; and the cutout of the regulating rod corresponding to a cam groove of a cam rod for reverse rotation is foamed longer than a cam groove on the reverse side to a moving direction of the control rod in a downward shift in a state in which shifted speed is established.