Locking device for power feeding plug

A locking device that locks a power feeding plug to a power receiving connector, one of the power feeding plug and the power receiving connector including a hook, the other one of the power feeding plug and the power receiving connector including a catch, the locking device comprising:

• a first restriction member moved between a first lock position, at which the first restriction member holds the hook on the catch, and a first unlock position, at which the first restriction member permits the hook to move away from the catch, wherein when the hook moves away from the catch, the first restriction member is moved to the first unlock position in cooperation with the hook;
• a second restriction member moved between a second lock position, at which the second restriction member is engaged with the first restriction member and restricts movement of the first restriction member from the first lock position to the first unlock position, and a second unlock position, at which the second restriction member is disengaged from the first restriction member and permits movement of the first restriction member to the first unlock position;
• a drive source arranged at a position separated from the power receiving connector, wherein the drive source generates driving force that moves the second restriction member;
• and
• a transmission member that transmits the driving force of the drive source to the second restriction member.