Structure of a movable headrest

A structure of a movable headrest, in which said headrest is connected upon a seat back of a seat and movable between a use position where it sits on top of the seat back for supporting the head of an occupant sitting on the seat and a non-use position where said headrest is located, permitting said occupant to attain a good field view without hindrance of said headrest, said structure comprising:

• a removable headrest body having a pair of headrest stays which are attached atop said seat back;
• a shaft which is rotatably supported between a pair of spaced-apart support brackets in an upper area of said seat back;
• a headrest stay holder in which each of said pair of headrest stays is received, each of said headrest stay holders being fixed to said shaft, and including a locking means for locking and unlocking said headrest stays, said locking means having a lock release means for placing said locking means in an unlocked state, to thereby release a locked state of said headrest stays against said holder;
• a lock actuating means for selectively locking and unlocking said release means associated with said headrest stay holder;
• and
• a headrest drive mechanism for causing rotational movement of said headrest body between said use position and non-use position, said mechanism being operatively connected with a drive means so as to impart a drive force to said shaft, thereby causing seat headrest body to rotate;
• and
• a means for allowing removal of said headrest stays that allow removal of said headrest body from said top of said seat back,
• whereby said headrest body is moved between said use and non-use positions through said headrest drive mechanism, and said headrest body is removable from said top of said seat back by operation of said means for actuating said lock release means associated with said headrest stay holder.