Quick assembly blade for a ceiling fan (3)

Abstract

A quick assembly blade for a ceiling fan includes a blade frame, a blade and a press board. The blade frame is fixed with three studs and an engage position-limiting unit located among the three studs, with the engage pin able to be shifted up and down at the top end of the position-limiting unit. The blade is bored with a through hole at a location matching with the position-limiting unit of the blade frame. The press board is pressed and fixed on the blade, provided with a position-limiting portion. When the press board is pushed to move horizontally to the rear end of the blade, the engage pin will automatically be inserted in the position-limiting portion to keep the press board in position and prevent it from disengaging from the blade, able to quickly assemble the blade on the blade frame.

1 . A quick as sembly blade for a ceiling fan comprising:
 a blade frame having its rear end extended and formed with a framework, said framework having its end expanded to form a pan-shaped body, said pan-shaped body fixed thereon with three studs extending upward and spaced apart, each said stud having its topside locked with a fastener, said fastener having its top end formed with a head, said pan-shaped body secured with a position-limiting unit at a location among said three studs, said position-limiting unit having its top end disposed with an engage pin, said engage pin able to be actuated to shift up and down at top end of said position-limiting unit;   a blade having its front end provided with a combining portion to be assembled on said pan-shaped body of said blade frame, said combining portion of said blade bored with three insert holes to be respectively fitted on said three studs of said blade frame, said head of said fastener extended out of said insert hole of said blade, said blade further bored with a through hole at a location among said three insert holes for receiving said position-limiting unit of said blade frame, said engage pin extended out of said through hole; and   a press board fixed on said combining portion of said blade, said press board bored with engage holes at locations corresponding to said insert holes of said blade, said engage holes of said press board respectively engaged and secured on underside of said head of said fastener, said engage holes of said press board having their rear ends respectively extended and formed with a receiving hole with a comparatively large diameter, said press board further provided with a position-limiting portion at a location matching with said through hole of said blade, said press board pushed to move horizontally toward rear end of said blade to let said engage pin inserted in said position-limiting portion.   
   
   
       2 . The quick assembly blade for a ceiling fan as claimed in  claim 1 , wherein said position-limiting unit is composed of a base, an elastic member, an engage pin and a base cover, said base fixed at a location among said three studs, said elastic member positioned on said base, said engage pin formed with a bottom portion and a vertical pin extended upward from said bottom portion, said bottom portion of said engage pin positioned at the top end of said elastic member, said base cover secured on said base and formed with an accommodating space in the center for receiving said elastic member and said engage pin therein, said accommodating space having its top end bored with a pin hole for said vertical pin to extend out therethrough, said bottom portion of said engage pin restricted in position by upper inner wall of said accommodating space. 
   
   
       3 . The quick assembly blade for a ceiling fan as claimed in  claim 2 , wherein said elastic member is a compression spring. 
   
   
       4 . The quick assembly blade for a ceiling fan as claimed in  claim 1 , wherein said position-limiting portion is a round hole through said press board. 
   
   
       5 . The quick assembly blade for a ceiling fan as claimed in  claim 1 , wherein said press board is a triangular board having its three edges respectively fixed with an elastic press member arranged staggering with said engage holes, each said elastic press member having a connecting edge connected with said press board and a free edge separated from said press board, each said elastic press member extended downward obliquely from said connecting edge and then bent upward to connect with said free edge, each said elastic press member extended out of an underside of said press board. 
   
   
       6 . The quick assembly blade for a ceiling fan as claimed in  claim 5 , wherein said press board has the annular edge of its front end formed with a push member protruding upward. 
   
   
       7 . The quick assembly blade for a ceiling fan as claimed in  claim 1 , wherein said studs are integrally formed on said pan-shaped body of said blade frame, spaced apart, arranged into a triangle in position and respectively bored with a threaded hole in the center, said studs respectively having a bushing fitted thereon, said fastener being a bolt having its top end formed with a round head with a comparatively large diameter and its lower end formed with threads to be combined with said threaded hole of said stud. 
   
   
       8 . The quick assembly blade for a ceiling fan as claimed in  claim 7 , wherein said bushing is a hollow cylinder made of rubber. 
   
   
       9 . The quick assembly blade for a ceiling fan as claimed in  claim 1 , wherein said press board is provided with a push member protruding along annular edge of its front end. 
   
   
       10 . The quick assembly blade for a ceiling fan as claimed in  claim 1 , wherein said press board is formed of metallic material by compression. 
   
   
       11 . The quick assembly blade for a ceiling fan as claimed in  claim 1 , wherein said press board is formed integrally of plastic.