Patent ID: 8905220

Claim:
A drawer device comprising: a housing having a predetermined space inside; a drawer disposed in such a way that it can be stored in a predetermined storage position in the housing and can be pulled out to the outside of the housing; an interlock switch that detects whether or not the drawer has been pulled out from the housing; a lock portion that locks the drawer in the storage position and releases a lock to enable the drawer to be pulled out from the housing; a lock detection sensor that is disposed in the neighborhood of the lock portion and detects at least two states among a locked state in which the lock portion locks the drawer, a half-locked state in which the lock portion incompletely locks the drawer, and a pulled-out state in which the lock of the lock portion is released; and a control unit that distinguishes between the locked state, the half-locked state, and the pulled-out state on the basis of the result of detection by the interlock switch and the result of detection by the lock detection sensor.