Patent ID: 8794360

Claim:
A shutter unit for a vehicle, comprising: a shutter that is provided in a front part of the vehicle, and is opened and closed in order to adjust an amount of outside air introduced into the front part; an urging mechanism engaged with said shutter and applying an urging force to said shutter to return said shutter to a predetermined initial position; a rotating machine configured to convert input motive power to electrical power, and to convert input electrical power to motive power, by electromagnetic induction action, said rotating machine engaged with said shutter and configured to drive said shutter by the motive power obtained by conversion of said input electrical power to motive power, and configured to generate a rotating machine induced voltage, which is an induced voltage of said rotating machine, by conversion of said input motive power to electrical power, said input motive power generated by movement of said shutter by said urging mechanism; an induced voltage-detecting unit configured to detect the rotating machine induced voltage; a control unit configured to execute return control for stopping supply of electric power to said rotating machine in order to cause said shutter to return to the initial position by the urging force applied to said shutter by said urging mechanism; and a failure-determining unit configured to determine failure of said shutter based on the rotating machine induced voltage detected during execution of the return control by said control unit, wherein said urging mechanism is provided separately from said rotating machine.