TRANSMISSION SYSTEM FOR ATV

A transmission system of an all-terrain vehicle (ATV) includes a transmission unit including a driving module that includes two axles and a differential connected to the axles, and a switching unit including a differential switching mechanism that includes a bifurcate fork connected to the differential and that has an elongated groove being elongated in a front-rear direction, a connecting pin parallel to the axles, extending through the bifurcate fork, and connected fixedly to the differential, an actuating shaft extending into the elongated groove, and an actuating motor driving the actuating shaft to rotate, thereby driving the bifurcate fork to move along the connecting pin via connection between the elongated groove and the actuating shaft and switching the differential between lock and unlock states.