Window covering device

Abstract

A window covering device has a top rail, a middle rail, and a bottom rail. A covering is connected with the middle rail and the bottom rail. Two cord controllers and two cord sets are provided in the top rail. The two cord sets are mounted respectively through the cord controllers. One cord set is connected with the middle rail, and the other cord set is connected with the bottom rail through the middle rail and the covering, thus the window covering is able to be opened from lower part or from upper part. The top rail, middle rail and the bottom rail are all made of plastic. The window covering device can be adjusted conveniently as people's desire.

1 . A window covering device comprising
 a top rail;   a middle rail;   a bottom rail;   a window covering connected with the middle rail and the bottom rail, two cord controllers mounted in the top rail;   a middle cord set including two first cords mounted through one of the cord controller and connected to the middle rail; and   a bottom cord set including two second cords mounted through the other cord controller, the middle rail, the covering and connected to the bottom rail;   wherein the top rail, the middle rail, and the bottom rail are hollow and are made of plastic material, at least a longitudinal hole is defined on a top face of the top rail, two mounting holes are defined near two ends of the top rail, the two cord controllers are mounted respectively in the two mounting holes of the top rail.   
     
     
         2 . The window covering device as claimed in  claim 1 , wherein the each cord controller includes a location seat, a roller, and a brake wheel, the location seat is mounted in the mounting hole aslant and has a chamber defined therein, a front port and a back port communicate with the chamber, a tooth portion is formed on an inner sidewall near one end of the top rail, the roller is mounted pivotally at the back port away from the tooth portion, the brake wheel is mounted movably in the chamber, and an outer edge of the brake wheel has a gear portion, which is engaged with the tooth portion, the first is caught between the roller and the brake wheel in one of the cord controllers and the second cord is caught between the roller and the brake wheel of the other cord controller. 
     
     
         3 . The window covering as claimed in  claim 1 , wherein each cord controller further has a cord connector mounted in the front port of the location seat of the cord controller. 
     
     
         4 . The window covering as claimed in  claim 3 , wherein the each cord controller further has a recess defined in the front port and two cord connectors are mounted respectively in the recesses of the cord controllers.