Vehicle power transmission device

摘要

A vehicle power transmission device including a crank type continuously variable transmission mechanism is provided with a forward/reverse switching mechanism disposed between an output shaft and a driven wheel, a transmission shaft relatively rotatably fitted around an outer periphery of the output shaft, an auxiliary power transmission device configured to provide a connection between an input shaft and the transmission shaft, a first outer peripheral spline provided on the transmission shaft, second and third outer peripheral splines provided on the output shaft, an inner peripheral spline that can switch between a first state, a second state, and a third state, and a second one-way clutch provided between the output shaft and the second outer peripheral spline and that is engaged when a rotational speed of the output shaft exceeds a rotational speed of the second outer peripheral spline.

主权项

1. A vehicle power transmission device comprising:
an input shaft connected to an engine, an output shaft connected to a driven wheel, an input side fulcrum having a variable amount of eccentricity from an axis of the input shaft and rotating together with the input shaft, a first one-way clutch connected to the output shaft, an output side fulcrum provided on an input member of the first one-way clutch, a connecting rod having opposite ends thereof connected to the input side fulcrum and the output side fulcrum and moving back and forth, and a shift actuator for changing the amount of eccentricity of the input side fulcrum, wherein the vehicle power transmission device comprises: a forward/reverse switching mechanism disposed between the output shaft and the driven wheel, a transmission shaft relatively rotatably fitted around an outer periphery of the output shaft, an auxiliary power transmission device configured to provide a connection between the input shaft and the transmission shaft, a first outer peripheral spline provided on the transmission shaft, a second outer peripheral spline and a third outer peripheral spline provided on the output shaft, an inner peripheral spline that can switch between a first state in which the inner peripheral spline meshes with the first and second outer peripheral splines, a second state in which the inner peripheral spline meshes with the second and third outer peripheral splines, and a third state in which the inner peripheral spline meshes with the first to third outer peripheral splines, and a second one-way clutch that is provided between the output shaft and the second outer peripheral spline and that is engaged when a rotational speed of the output shaft exceeds a rotational speed of the second outer peripheral spline.