Speed change control device of vehicular transmission

摘要

To suppress the projecting amount of an electric motor from the internal combustion engine in the direction of the axis of a shift drum, miniaturize the driving means, and improve the shift accuracy, in a speed change control device of a vehicular transmission in which a driving means including the electric motor and rotatably driving the shift drum with power exerted by the electric motor is connected to the shift drum. The driving means (112) includes an electric motor (113) having a rotation axis in a plane orthogonal to an axis of a shift drum (104); a barrel cam (115) that rotates about an axis parallel to the electric motor (113) by power transmission from the electric motor (113) and that has a cam groove (130) formed on the outer periphery; and a transmission rotation member (116) interlocked and coupled to the shift drum (104) so as to be rotatable about the axis orthogonal to the rotation axis of the barrel cam (115) and arranged with a plurality of engagement pins (131) that selectively engages the cam groove (130).