Fan blade quick installation structure and a fan using the same

1 . A fan blade quick installation structure, comprising:

a turntable ( 1 ), a fan blade body ( 2 ), the turntable ( 1 ) is provided with a slot ( 10 ) which has an opening end on the edge be turntable ( 1 ), a rotatable locking device ( 3 ) is provided inside the turntable ( 1 ) adjacent to the slot ( 10 ), one end of the rotatable locking device ( 3 ) extends out of the turntable ( 1 ) forming an operating portion ( 52 ) a protrusion ( 22 ) is formed on the outer edge of the root portion ( 20 ) of the fan blade body ( 2 ), a sidewall of the protrusion ( 22 ) forms a locking slot ( 21 ),

and there are two configurational states between the fan blade body ( 2 ) and the locking device ( 3 );

the first configurational state: when the fan blade body ( 2 ) is connected to the turntable ( 1 ), the root portion ( 20 ) is inserted into the slot ( 10 ), the locking device ( 3 ) and the locking slot ( 21 ) mutually limit each other locking the root portion ( 20 ) in the slot ( 10 );

the second configurational state: when the fan blade body ( 2 ) is separated from the turntable ( 1 ), external force drives the operating portion ( 52 ) to rotate the locking device ( 3 ), so that the locking device ( 3 ) disengages from the locking slot ( 21 ), the root portion ( 20 ) detaches from the slot ( 10 ) releasing the operating portion ( 52 ) and resetting the locking device ( 3 ),

the locking device ( 3 ) further comprises a rotating member ( 5 ) and an elastic member ( 6 ), the rotating member ( 5 ) and the turntable ( 1 ) are rotatably connected, one end of the rotating member ( 5 ), forms a limiting portion ( 51 ) and the other end of the rotating member ( 5 ) forms the operating portion ( 52 ), the limiting portion ( 51 ) and the locking slot ( 21 ) are mutually limited in the first configurational state, meanwhile the two ends of elastic member ( 6 ) respectively touch and apply pressure to the limiting portion ( 51 ) and the turntable ( 1 ), the elastic member ( 6 ) pushes the limiting portion ( 51 ) to enter the slot ( 10 ) and approach fan blade body ( 2 ) until the operating portion ( 52 ) touches the turntable ( 1 ) and is stopped by the turntable ( 1 ).

2 . The fan blade quick installation structure according to claim 1 , wherein the turntable ( 1 ) is provided with an installation groove ( 4 ) adjacent to the slot ( 10 ), the locking device ( 3 ) is rotatably installed in the installation groove ( 4 ), and the elastic force of elastic member ( 6 ) pushes limiting portion ( 51 ) to enter the slot ( 10 ) from the installation groove ( 4 ), or the limiting portion ( 51 ) overcomes the elastic force of elastic member ( 6 ) and retracts back into the installation groove ( 4 ) from the slot ( 10 ) when driving the operating portion ( 52 ).

3 . The fan blade quick installation structure according to claim 2 , wherein a limiting hole ( 12 ) is provided on the circumferential surface of turntable ( 1 ) corresponding to the installation groove ( 4 ), the operating portion ( 52 ) extends out of the turntable ( 1 ) through the limiting hole ( 12 ), and when the elastic force of elastic member ( 6 ) causes the limiting portion ( 51 ) to enter the slot ( 10 ) from the installation groove ( 4 ) until the operating portion ( 52 ) is in contact with a side wall of the limiting hole ( 12 ), the operating portion ( 52 ) moves towards the other side wall of the limiting hole ( 12 ) to drive the rotating member ( 5 ) to rotate, so that the limiting portion ( 51 ) overcomes the elastic force of elastic member ( 6 ) and returns into the installation groove ( 4 ) from the slot ( 10 ).

4 . The fan blade quick installation structure according to claim 2 , wherein the installation groove ( 4 ) is provided with a first positioning portion ( 42 ), the side of limiting portion ( 51 ) facing away from the root portion ( 20 ) is provided with a second positioning portion ( 54 ), the elastic member ( 6 ) is a spring, and one end of elastic member ( 6 ) is sleeved on the first positioning portion ( 42 ) to maintain positioning fit, and the other end of elastic member ( 6 ) is sleeved on the second positioning portion ( 54 ) to maintain positioning fit.

5 . The fan blade quick installation structure according to claim 2 , wherein the turntable ( 1 ) is provided with a hollow part ( 13 ) adjacent to the installation groove ( 4 ), the installation groove ( 4 ) is provided with a positioning screw ( 41 ), the rotating member ( 5 ) is provided with a through hole ( 50 ), the rotating member ( 5 ) is sleeved on the positioning screw ( 41 ) through the through hole ( 50 ), a nut ( 7 ) and the positioning screw ( 41 ) are connected with threads, and the nut ( 7 ) confines the rotating member ( 5 ) to the positioning screw ( 41 ), and the rotating member ( 5 ) rotates around the positioning screw ( 41 ).

6 . The fan blade quick installation structure according to claim 1 , wherein when the root portion ( 20 ) is inserted into the slot ( 10 ), the protrusion ( 22 ) contacts the limiting portion ( 51 ), as the root portion ( 20 ) is inserted, the protrusion ( 22 ) causes the locking position ( 51 ) to exit the slot ( 10 ) until the protrusion ( 22 ) and the limiting portion ( 51 ) are disengaged, and the elastic force of elastic member ( 6 ) causes the limiting portion ( 51 ) to be inserted into the locking slot ( 21 ).

7 . The fan blade quick installation structure according to claim 1 , wherein in the first configurational state, the locking device ( 3 ) applies force to the locking slot ( 21 ), meanwhile the fan blade body ( 2 ) contacts the slot ( 10 ) in the direction away from the locking device ( 3 ).

8 . The fan blade quick installation structure according to claim 7 , wherein a set of guide grooves ( 11 ) are provided on the side of slot ( 10 ) along the insertion direction of root portion ( 20 ), and the guide grooves ( 11 ) avoid the locking device ( 3 ), a set of positioning convex strips ( 23 ) are provided on the corresponding side of the root portion ( 20 ) along the insertion direction of root portion ( 20 ), and the positioning strips ( 23 ) avoid the locking slot ( 21 ) and are inserted into the guide grooves ( 11 ) to guide the root portion ( 20 ) into the slot ( 10 ), the locking device ( 3 ) makes the positioning strips ( 23 ) contact the guide groove ( 11 ) in the direction away from the locking device ( 3 ).