Blind assembly having a slide member

Abstract

A blind assembly includes a guide rail having spaced-apart first and second walls, an end wall interconnecting outer ends of the first and second walls, a first rib projecting transversely from an inner end of the second wall, and a second rib projecting transversely from the second wall between the first rib and the end wall. The second wall and the first and second ribs cooperatively define a longitudinal slide groove. A slide member is connected to and is movable along with a pull rod of the blind assembly, and includes a slide part received slidably in the slide groove and having two transverse ends longitudinally opposite to each other, and two rollers connected respectively to the transverse ends. Each roller has a circumferential face between the first and second ribs and capable of contacting at least one of the first and second ribs.

1 . A blind assembly comprising:
 a guide rail having spaced-apart longitudinal first and second walls, a longitudinal end wall interconnecting outer ends of said first and second walls, a longitudinal first rib projecting transversely from an inner end of said second wall, and a longitudinal second rib projecting transversely from said second wall between said first rib and said end wall, said second wall and said first and second ribs cooperatively defining a longitudinal slide groove;   a pull rod; and   a slide member connected to one end of said pull rod and movable along with said pull rod, said slide member including a main body, and a slide part that is disposed on one side of said main body, that is received slidably in said slide groove, and that has two transverse ends longitudinally opposite to each other, and two rollers connected rotatably and respectively to said transverse ends of said slide part, each of said rollers having a circumferential face between said first and second ribs and capable of contacting at least one of said first and second ribs.   
   
   
       2 . The blind assembly of  claim 1 , wherein said slide member is connected telescopically to said one end of said pull rod. 
   
   
       3 . The blind assembly of  claim 2 , wherein said one end of said pull rod is provided with a receiving groove, said slide member further including a hollow guide part projecting from one side of said main body opposite to said slide part in a direction perpendicular to a sliding direction of said slide part and inserted slidably into said receiving groove, and a biasing element disposed in said hollow guide part for biasing said main body to move in a direction away from said pull rod. 
   
   
       4 . The blind assembly of  claim 3 , wherein said slide member further includes a spring retainer fixed inside said receiving groove to retain said biasing element inside said hollow guide part. 
   
   
       5 . The blind assembly of  claim 4 , wherein said biasing element is formed as a coil spring, said spring retainer having a retaining rod extending into said hollow guide part to retain said coil spring within said hollow guide part, and a first connecting element provided on said retaining rod, said hollow guide part being provided with a second connecting element connected to said first connecting element to retain said retaining rod within said hollow guide part. 
   
   
       6 . The blind assembly of  claim 5 , wherein said second connecting element includes a hook and a stem, said stem being a split part of said hollow guide part. 
   
   
       7 . The blind assembly of  claim 4 , wherein said slide member further includes two said biasing elements, each of said biasing elements being formed as a coil spring, said spring retainer having two retaining rods extending into said hollow guide part to retain respectively said biasing elements within said hollow guide part, and a first connecting element connected between said retaining rods, said hollow guide part being provided with a second connecting element connected to said first connecting element to retain said retaining rods within said hollow guide part. 
   
   
       8 . The blind assembly of  claim 7 , wherein said second connecting element includes a hook and a stem, said stem being a split part of said hollow guide part. 
   
   
       9 . The blind assembly of  claim 1 , wherein said slide member further includes a resilient member provided on said slide part and abutting resiliently against one of said first and second ribs, said resilient member biasing said slide part to move toward the other one of said first and second ribs so that said rollers abut against said other one of said first and second ribs. 
   
   
       10 . The blind assembly of  claim 9 , wherein said slide part further has two longitudinal ends interconnecting said transverse ends, one of said longitudinal ends being proximate to said main body, and the other one of said longitudinal ends being distal from said main body, said resilient member being configured as a resilient plate extending longitudinally at said one of said longitudinal ends between said transverse ends, said resilient plate being convexed toward said one of said first and second ribs.