Door locking device and electronic apparatus

A door locking device configured to lock a hinged door, which is applied to an electronic apparatus comprising the hinged door arranged in an opening portion of a casing, the door locking device comprising:

• a key cylinder arranged on the hinged door, the key cylinder comprising a movable element arranged on an inner side of the hinged door and configured to be displaced in a pivoting manner between an unlocked position and a locked position in accordance with unlocking/locking operation;
• a pivot hook coupled to the movable element of the key cylinder on the inner side of the hinged door and configured to be displaced in a pivoting manner by interlocking with the movable element, the pivot hook being caught on the casing when the hinged door is closed and the movable element is at the locked position to prevent the hinged door from being opened;
• and
• a rod member crank-coupled to the movable element of the key cylinder on the inner side of the hinged door and configured to be linearly displaced by interlocking with the movable element,
• wherein, when the hinged door is closed and the movable element is at the locked position, a distal end of the rod member is held in contact with a rod receiving surface formed in the casing to face in a direction of closing the hinged door so that the rod member keeps a closed state of the hinged door.