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Power feeding plug locking device

  • US 8,753,136 B2
  • Filed: 09/21/2011
  • Issued: 06/17/2014
  • Est. Priority Date: 09/30/2010
  • Status: Active Grant
First Claim
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1. A power feeding plug locking device that locks a power feeding plug to a power feeding inlet, wherein the power feeding inlet is arranged in a machine, the machine including a door that can be locked, the power feeding plug locking device comprising:

  • a lock mechanism including a lock member that is movable between a lock position and an unlock position and a driving device that is operable to move the lock member between the lock position and the unlock position, wherein the lock mechanism prohibits removal of the power feeding plug from the inlet when the lock member is positioned at the lock position and allows removal of the power feeding plug from the inlet when the lock member is positioned at the unlock position;

    a switch which is operable by a user and which, when operated, outputs an operational signal that instructs the driving device to move the lock member between the lock position and the unlock position;

    a door lock state confirmation unit that confirms whether the door of the machine is locked and outputs a door lock state signal; and

    a controller communicatively coupled with the switch, the door lock state confirmation unit, and the driving device, wherein the controller controls the driving device to move the lock member from the lock position to the unlock position when the controller receives the operational signal from the switch that instructs the driving device to move the lock member to the unlock position and the door lock state signal from the door lock state confirmation unit that indicates a door unlock state of the door of the machine, wherein the operational signal is a signal different from the door lock state signal.

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