Patent ID: 7963609

Claim:
A chair arm that is rotatably folded and assembly-free with elegant appearance and ingenious structural design, comprising: a pin; a fixation for the pin; a back panel; and an arm are rotatably connected, said pin is fixed on a side of said back panel, said fixation for the pin comprises: an arm housing, an unlocking hand knob, a locking member, and an elastic member having two ends, said arm housing is fixed inside said arm, a guide slot is formed on a surface of said housing facing the back panel, a guide slot is formed on an opposing side of said arm housing opposite to said surface, said guide slot is connected with a slide slot, said locking member and said elastic member are disposed inside said slide slot, the two ends of said elastic member are disposed against said guide slot and said locking member, respectively, at least a part of said locking member traverses said guide slot to form a locking hole, said pin is disposed inside said locking hole, and said locking member is connected with said unlocking hand knob.