Abstract: A detachable blade structure has a blade seat, a motor, a cover plate, a spherical cover, a blade, a detachable member and first and second screws. The spherical cover has a cover slot, a cover positioning hole and a cover screw hole. The cover plate has a chamber. The blade is inserted through the cover slot and inserted into the chamber. The blade seat has a first seat lug, a first seat screw hole, a second seat lug and a second seat screw hole. The motor has a motor positioning hole and a motor screw hole. The first seat lug is inserted into the motor positioning hole. The first screw is screwed into the first seat screw hole and the motor screw hole. The second seat lug is inserted into the cover positioning hole. The second screw is screwed into the second seat screw hole and the cover screw hole.

Abstract: A hanging structure for a wall fan, able to hang a wall fan on a wall, includes a board and a casing. The board to be locked on a wall is provided thereon with at least one first hanging member and at least one first locking member. The casing is provided therein with at least one second hanging member by which the casing can be hung on the first hanging member of the board. The casing is further provided with at least one second locking member to be locked together with the first locking member of the board to have the casing firmly fixed on the board and roughly covering the board. The hanging structure for a wall fan of this invention can simplify aligning, positioning and locking operation and can be firmly hung on a wall to avoid displacement for attaining effect of protection of the wall fan.