Roller level adjustment device for roller blind

Abstract

An adjustment device for a roller blind having a bracket and a roller that is pivoted to the bracket and for adjusting the level of the roller includes a base frame, a moveable member and an adjustment member. The base frame is fastened to an end of the bracket. The moveable member, which is moveably mounted on the base frame, has a mounting hole for holding an end of the roller. The adjustment member is mounted in the base frame for moving the moveable member to further move the roller vertically up and down relative to the base frame.

1 . An adjustment device for a roller blind and for adjusting the level of a roller of the roller blind, the adjustment device comprising: 
 a base frame;    a moveable member mounted on said base frame and movable relative to said base frame, said moveable member having a mounting hole for holding an end of said roller of said roller blind; and    an adjustment member mounted in said base frame for moving said moveable member to further move the roller vertically up and down relative to said base frame.    
   
   
       2 . The adjustment device as claimed in  claim 1 , wherein said base frame comprises a vertically extended rail; said moveable member comprises a coupling portion coupled to and movable along said vertically extended rail.  
   
   
       3 . The adjustment device as claimed in  claim 1 , wherein said base frame comprises a through hole; said moveable member comprises a roller carrier having said mounting hole, and a leveling screw having a bottom end connected to said roller carrier and a top end inserted through the through hole of said base frame; said adjustment member comprises a screw hole axially disposed above the through hole of said base frame and threaded onto said leveling screw.  
   
   
       4 . The adjustment device as claimed in  claim 3 , wherein said base frame comprises an restraining hole; said adjustment member has a periphery thereof partially protruding over said restraining hole.  
   
   
       5 . The adjustment device as claimed in  claim 1 , wherein said base frame comprises: 
 a mounting portion having a first sidewall for mounting on said roller blind, a second sidewall perpendicularly downwardly extended from said first sidewall, and a third sidewall perpendicularly extended from said second sidewall and disposed in parallel to said first sidewall, and    a guide portion downwardly extended from said third sidewall of said mounting portion remote from said second sidewall for guiding movement of said moveable member.    
   
   
       6 . The adjustment device as claimed in  claim 2 , wherein said base frame comprises a mounting portion and a guide portion; said mounting portion having a first sidewall for mounting on said roller blind, a second sidewall perpendicularly downwardly extended from said first sidewall, and a third sidewall perpendicularly extended from said second sidewall and disposed in parallel to said first sidewall; said guide portion being downwardly extended from said third sidewall of said mounting portion remote from said second sidewall, said guide portion having a guide slot at a middle thereof defining two said guide rails vertically arranged in parallel at two sides of said guide slot; 
 wherein said moveable member comprises a groove extended along a periphery thereof such that two said coupling portions are formed in said groove at two sides and respectively coupled to said guide rails.    
   
   
       7 . The adjustment device as claimed in  claim 6 , wherein said third sidewall of said mounting portion of said base frame comprises a through hole; said moveable member comprises a roller carrier having said mounting hole, and a leveling screw having a bottom end connected to said roller carrier and a top end inserted through the through hole of said mounting portion of said base frame; said adjustment member comprises a screw hole axially disposed above the through hole of said base frame and threaded onto said leveling screw.  
   
   
       8 . The adjustment device as claimed in  claim 7 , wherein said second sidewall of said mounting portion of said base frame comprises an restraining hole; said adjustment member has a periphery thereof partially protruding over said restraining hole.  
   
   
       9 . A roller blind comprising: 
 a bracket;    an adjustment device having a base frame fastened to an end of said bracket, a moveable member moveably mounted on said base and having a mounting hole, and an adjustment member for moving said moveable member vertically up and down on said base frame;    a roller having an end pivotally mounted in said mounting hole of said moveable member and an opposite end pivotally mounted to the other end of said bracket; and    a shade connected to said roller and windable on said roller.    
   
   
       10 . The roller blind as claimed in  claim 9 , wherein said base frame comprises a vertically extended rail; said moveable member comprises a coupling portion coupled to and movable along said vertically extended rail.  
   
   
       11 . The roller blind as claimed in  claim 9 , wherein said base frame comprises a through hole; said moveable member comprises a roller carrier having said mounting hole, and a leveling screw having a bottom end connected to said roller carrier and a top end inserted through the through hole of said base frame; said adjustment member comprises a screw hole axially disposed above the through hole of said base frame and threaded onto said leveling screw.  
   
   
       12 . The roller blind as claimed in  claim 11 , wherein said base frame comprises an restraining hole; said adjustment member has a periphery thereof partially protruding over said restraining hole.  
   
   
       13 . The roller blind as claimed in  claim 9 , wherein said base frame comprises: 
 a mounting portion having a first sidewall fastened to said bracket, a second sidewall perpendicularly downwardly extended from said first sidewall, and a third sidewall perpendicularly extended from said second sidewall and disposed in parallel to said first sidewall, and a guide portion downwardly extended from said third sidewall of said mounting portion remote from said second sidewall for guiding movement of said moveable member.    
   
   
       14 . The roller blind as claimed in  claim 10 , wherein said base frame comprises a mounting portion and a guide portion; said mounting portion having a first sidewall fastened to said bracket, a second sidewall perpendicularly downwardly extended from said first sidewall, and a third sidewall perpendicularly extended from said second sidewall and disposed in parallel to said first sidewall; said guide portion being downwardly extended from said third sidewall of said mounting portion remote from said second sidewall, said guide portion having a guide slot at a middle thereof defining two said guide rails vertically arranged in parallel at two sides of said guide slot; 
 wherein said moveable member comprises a groove extended along a periphery thereof such that two said coupling portions are formed in said groove at two sides and respectively coupled to said guide rails.    
   
   
       15 . The roller blind as claimed in  claim 14 , wherein said third sidewall of said mounting portion of said base frame comprises a through hole; said moveable member comprises a roller carrier having said mounting hole, and a leveling screw having a bottom end connected to said roller carrier and a top end inserted through the through hole of said mounting portion of said base frame; said adjustment member comprises a screw hole axially disposed above the through hole of said base frame and threaded onto said leveling screw.  
   
   
       16 . The roller blind as claimed in  claim 15 , wherein said second sidewall of said mounting portion of said base frame comprises an restraining hole; said adjustment member has a periphery thereof partially protruding over said restraining hole.