Patent ID: 8459395

Claim:
A switching device of a driving power transmission system equipped in an off-road vehicle, comprising: a switching lever configured to switch driving power transmission of the driving power transmission system for switching between a two-wheel-drive position and a four-wheel-drive position; a spring that is mounted to the switching lever and is configured to apply a force to cause the switching lever to be biased toward one of the two-wheel-drive switch position and four-wheel-drive switch position; and a negative-pressure actuator module that is coupled to an air-intake system of an engine unit mounted in the off-road vehicle, and further coupled to the switching lever through a cable and is configured to pull the cable to move the switching lever to the other of the two-wheel-drive switch position and four-wheel-drive switch position against the bias of the spring by a negative pressure generated in the air-intake system, the engine unit center-mounted in a longitudinal direction of the vehicle, below vehicle seats.