Patent ID: 7954394

Claim:
A range switching device comprising: a parking device that is in a parking release state while a source pressure based on a hydraulic pressure from a hydraulic pressure generating source is supplied thereto and is in a parking state while the source pressure is not supplied thereto; a parking switching valve including a spool that is movable to a first position and to a second position, a biasing member that biases the spool into the first position, a first input port, a second input port that is closed while the spool is in the first position and through which the source pressure is applied to the spool while the spool is in the second position, and an output port that is in communication with the first input port while the spool is in the second position; and a controlling unit for controlling the spool to move between the first position and the second position, wherein while the spool is in the second position, the source pressure is supplied to the parking device via the output port so that the parking device is in the parking release state, and the spool is held in the second position against the biasing member because of the source pressure applied through the second input port, and while the spool is in the first position, the source pressure is not supplied to the parking device so that the parking device is in the parking state.