Combination structure of the blade rack and the blade of a ceiling fan

Abstract

A combination structure of the blade rack and the blade of a ceiling includes a blade rack, a blade, multiple adjusting members, and at least one fixing member. The multiple adjusting members are mounted between the blade and the blade rack, so that the included angle between the blade and the blade rack may be adjusted arbitrarily by controlling the number of the multiple adjusting members, so as to adjust the air flow rate by adjusting the relative included angle between the blade and the blade rack.

What is claimed is:  
     
         1 . A combination structure of the blade rack and the blade of a ceiling, comprising a blade rack, a blade, multiple adjusting members, and at least one fixing member, wherein: 
 the multiple adjusting members are mounted between the blade and the blade rack, so that an included angle between the blade and the blade rack may be adjusted arbitrarily by controlling a number of the multiple adjusting members; and    the blade is fixed on the blade rack by the at least one fixing member.    
     
     
         2 . The combination structure of the blade rack and the blade of a ceiling in accordance with  claim 1 , wherein the blade rack has one end provided with a combination portion, and the blade has one end provided with a combination portion mounted in the combination portion of the blade rack.  
     
     
         3 . The combination structure of the blade rack and the blade of a ceiling in accordance with  claim 2 , wherein the combination portion of the blade rack is an elongated dovetail-shaped channel.  
     
     
         4 . The combination structure of the blade rack and the blade of a ceiling in accordance with  claim 2 , wherein the combination portion of the blade rack has a top -face and a bottom face each provided with an oblique retaining edge.  
     
     
         5 . The combination structure of the blade rack and the blade of a ceiling in accordance with  claim 2 , wherein the combination portion of the blade has a tapered shape, and has a top face and a bottom face each provided with an oblique retaining edge.  
     
     
         6 . The combination structure of the blade rack and the blade of a ceiling in accordance with  claim 5 , wherein the blade rack has a top formed with at least one fixing portion extending into the combination portion of the blade rack, the retaining edge of the combination portion of the blade is formed with at least one recessed fixing portion aligning with the fixing portion of the blade rack, and the fixing member is extended through the fixing portion of the blade rack, and is fixed in the recessed fixing portion of the retaining edge of the combination portion of the blade, thereby fixing the blade on the blade rack.  
     
     
         7 . The combination structure of the blade rack and the blade of a ceiling in accordance with  claim 5 , wherein retaining edge of the combination portion of the blade is formed with an adjusting slot for receiving the multiple adjusting members.  
     
     
         8 . The combination structure of the blade rack and the blade of a ceiling in accordance with  claim 7 , wherein the multiple adjusting members are received in the adjusting slot of the retaining edge of the combination portion of the blade, and are retained by the retaining edge of the combination portion of the blade rack.  
     
     
         9 . The combination structure of the blade rack and the blade of a ceiling in accordance with  claim 1 , wherein each of the multiple adjusting members is a sheet-shaped structure.  
     
     
         10 . The combination structure of the blade rack and the blade of a ceiling in accordance with  claim 1 , wherein the blade has a width relatively smaller than half of that of a conventional blade.