Patent ID: 7770978

Claim:
A detachable electric headrest, comprising: a headrest pole including an engaging depression formed in a lower end portion thereof; an ascending and descending slider provided with a detachment depression, into which the lower end portion of the headrest pole is detachably inserted, and mounted to a fastening bracket of a seat frame so as to be raised or lowered; an elastic member mounted in the detachment depression of the ascending and descending slider so as to be selectively inserted into the engaging depression of the inserted headrest pole; and a locking bar slidably coupled to and elastically supported by the ascending and descending slider, wherein the locking bar includes: a pressing portion by which at least a portion of the elastic member is urged into the engaging depression of the headrest pole; and a cut depressed portion into which the elastic member is moved by a restoring force thereof so that the elastic member is disengaged from the engaging depressions of the headrest pole; wherein, when the ascending and descending slider is moved to an upper most position thereof, the locking bar is pressed by an upper bracket of the seat frame and thus slid to a lowered position thereof so that the elastic member moves into the cut depressed portion of the locking bar by the restoring force thereof and unlocks the headrest pole from the ascending and descending slider.