Cordless curtain assembly

Abstract

A cordless curtain assembly includes a curtain unit, a control unit, a fixed part, a movable part and an operation cord. The curtain is connected between the head box and a bottom bar. The user may pulls the bottom bar to operate the operation cord which is wrapped to the first and second pillars in the fixed part and the movable part. The movable part is moved and activates the spring to lift the curtain. When the user lifts the bottom bar, the spring force is release so that the movable part moves back to its initial position to let the operation cord to pull the curtain upward.

What is claimed is: 
     
         1 . A curtain assembly comprising:
 a spring having a first end and a second end which is fixed to a first fixed member in a head box;   a fixed part having a first passage defined therein, at least two first pillars, at least one fixed member and multiple first columns located in the first passage of the fixed part;   a movable part having a second passage defined therein, at least two second pillars located in the second passage, multiple rollers located at a periphery of the movable part, multiple first fixed members located in the movable part, the first end of the spring connected to one of the first fixed members, and   an operation cord wrapped to the at least two first pillars via the first passage and the at least two second pillars via the second passage.   
     
     
         2 . A cordless curtain assembly comprising:
 a curtain unit having a head box and a bottom bar, a curtain connected between the head box and the bottom bar, the head box having a space defined therein and multiple holes defined through a bottom of the space;   a spring having a first end and a second end which is fixed to a first fixed member in the head box;   a fixed part having a first passage defined therein, at least two first pillars, at least one fixed member and multiple first columns located in the first passage of the fixed part, the fixed part being securely located in the space and located in opposite to the first fixed member;   a movable part having a second passage defined therein, at least two second pillars located in the second passage, multiple rollers located at a periphery of the movable part, multiple first fixed members located in the movable part, the movable part movably located in the space of the head box, the first end of the spring connected to one of the first fixed members, and   an operation cord wrapped to the at least two first pillars via the first passage and the at least two second pillars via the second passage, two ends of the operation cord extending through the holes of the head box and the curtain and being fixed to the bottom bar.   
     
     
         3 . The curtain assembly as claimed in  claim 2 , wherein the curtain is window blinds. 
     
     
         4 . The curtain assembly as claimed in  claim 2 , wherein the curtain is a honeycomb curtain. 
     
     
         5 . The curtain assembly as claimed in  claim 2 , wherein the curtain is a foldable shade.