Tube frame fixing structure

Abstract

A tube frame fixing structure comprises two cambered plates and tube frames. Each cambered plates has positioning holes without threads or a plurality of round grooves having threads on an inner wall thereof. Each tube frame has a plurality of through holes; the through holes of the tube frames, positioning holes and round grooves of the first and second cambered plate being aligned. A plurality of studs having threads are used to lock the two cambered plates and two tube frames. At first, each stud enters into one through hole of the tube frame. Then the stud enters into the round groove of one selected cambered plate of the two cambered plates to reach the positioning hole of the other cambered plate to resist against one wall of the tube frame. The stud moves forwards continuously so that the selected cambered plate will resist against the wall of the tube frame due to the interaction of the threads of the stud and round groove of the selected cambered plate. Thereby, the first and second cambered plates are positioned in the tube frames.

What is claimed is:  
     
         1 . A tube frame fixing structure comprising: 
 a first cambered plate being a long cambered strip and being formed with positioning holes without threads;    a second cambered plate being a long cambered strips and being formed with round grooves; the round groove having threads on an inner wall thereof;    two tube frames, each tube frame having a plurality of through holes; the through holes of the tube frames, positioning holes of the first cambered plate and round grooves of the second cambered plate being aligned;    wherein a plurality of studs having threads are used to lock the first and second cambered plates and two tube frames; at first, each stud enters into one through hole of the tube frame; then the stud enters into the round groove of the first cambered plate to reach the positioning hole of the second cambered plate so that the first cambered plate will resist against one wall of the tube frame; the stud moves forwards continuously so that the second cambered plate will resist against the wall of the tube frame due to the interaction of the threads of the stud and the round groove of the second cambered plate; thereby, the first and second cambered plates are positioned in the tube frames.    
     
     
         2 . The tube frame fixing structure as claimed in  claim 1 , wherein the through holes are sealed by seals to present a beautiful outlook.  
     
     
         3 . A tube frame fixing structure comprising: 
 a first cambered plate being a long cambered strip;    a second cambered plate being a long cambered strips and being formed with round grooves; the round groove having threads on an inner wall thereof;    two tube frames, each tube frame having a plurality of through holes; the through holes of the tube frames, and round grooves of the second cambered plate being aligned;    wherein a plurality of studs having threads are used to lock the first and second cambered plates and two tube frames; at first, each stud enters into one through hole of the tube frame; then the stud enters into the round groove of the first cambered plate to reach the second cambered plate so that the second cambered plate will resist against one wall of the tube frame; the stud moves forwards continuously so that the first cambered plate will resist against the wall of the tube frame due to the action of the threads of the stud and round groove of the second cambered plate; thereby, the first and second cambered plates are positioned in the tube frames.    
     
     
         4 . The tube frame fixing structure as claimed in  claim 3 , wherein the through holes are sealed by seals to present a beautiful outlook.  
     
     
         5 . A tube frame fixing structure comprising: 
 a first cambered plate being a long cambered strip and being formed with positioning holes without threads and a plurality of round grooves having threads on an inner wall thereof; wherein the positioning holes and round grooves are alternatively arranged;    a second cambered plate being a long cambered strips and being formed with positioning holes without threads and a plurality of round grooves having threads on an inner wall thereof; wherein the positioning holes and round grooves are alternatively arranged;    two tube frames, each tube frame having a plurality of through holes; the through holes of the tube frames, positioning holes and round grooves of the first and second cambered plate being aligned;    wherein a plurality of studs having threads are used to lock the first and second cambered plates and two tube frames; at first, each stud enters into one through hole of one of the two tube frame; then the stud enters into the round groove of one selected cambered plate of the first and second cambered plate to reach the positioning hole of the other cambered plate to resist against one wall of the tube frame; the stud moves forwards continuously so that the selected cambered plate will resist against the wall of the tube frame due to the action of the threads of the stud and round groove of the selected cambered plate; thereby, the first and second cambered plates are positioned in the tube frames.    
     
     
         6 . The tube frame fixing structure as claimed in  claim 5 , wherein the through holes are sealed by seals to present a beautiful outlook.