WINDOW CURTAIN CONTROL DEVICE

Abstract

A window curtain control device includes a top box having a room therein, and a fixed part and a scrolling member are respectively positioned on two ends of the room. A curtain is connected to the top box, and a bottom rail is connected to the lower end of the curtain. A movable part is movably located between the fixed part and the scrolling member. A tension rope has one end fixed to the fixed part, and the other end of the tension rope wraps around the fixed part and the movable part. A driving rope has one end fixed to the movable part and the other end of the driving rope includes an operation portion which extends through the top box. The curtain is moved by operating the operation portion.

Claims

1. A window curtain control device comprising a top box, a curtain connected to the top box, and a bottom rail, the bottom rail connected to a lower end of the curtain, the top box having a room defined therein, wherein: a fixed part and a scrolling member are respectively positioned on two ends of the room, a movable part is movably located between the fixed part and the scrolling member, a tension rope has one end fixed to the fixed part, and the other end of the tension rope wraps around the fixed part and the movable part, a driving rope has one end fixed to the movable part and the other end of the driving rope extends through the top box and comprises an operation portion, the curtain is moved by operating the operation portion.

2. The window curtain control device as claimed in claim 1, wherein the operation portion is a section of the driving rope and hangs below the top box.

3. The window curtain control device as claimed in claim 1, wherein the operation portion has a handle connected thereto.

4. The window curtain control device as claimed in claim 1, wherein the tension rope wraps around the movable part eight laps while the driving rope wraps around the movable part one lap.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0010] FIG. 1 shows the top box of the curtain control device of the present invention;

[0011] FIG. 2 shows the fixed part, the movable part and the scrolling member in the top box of the curtain control device of the present invention;

[0012] FIG. 3 is a partial cross sectional view to show the curtain control device of the present invention installed to a window curtain, and

[0013] FIG. 4 shows that when the operation portion is pulled, the curtain lifts.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0014] Referring to FIGS. 1 to 4, the window curtain control device of the present invention comprises a top box 10, and a curtain is connected to the top box 10. A bottom rail 20 is connected to the lower end of the curtain. The top box 10 includes a room 12 defined therein. A fixed part 14 and a scrolling member 15 are respectively positioned on two ends of the room 12. A movable part 13 is movably located between the fixed part 14 and the scrolling member 15.

[0015] A tension rope 11 has one end fixed to the fixed part 14, and the other end of the tension rope 11 wraps around the fixed part 14 and the movable part 13, and extends through the top box 10 and connected to the bottom rail 20. A driving rope 16 has one end fixed to the movable part 13 and the other end of the driving rope 16 extends through the top box 10 and comprises an operation portion 17 which is a section of the driving rope 16 and hangs below the top box 10. The curtain is moved by operating the operation portion 17. The operation portion 17 has a handle 18 connected to the distal end thereof. The tension rope 11 wraps around the movable part 13 eight laps while the driving rope 16 wraps around the movable part 13 one lap.

[0016] The users operates the operation portion 17 to control the movement of the curtain, and this is convenient for the users.

[0017] As shown in FIGS. 1, 3 and 4, the operation portion 17 is a section of the driving rope 16 and hangs below the top box 10. The operation portion 17 is simple and does not wrap children playing around.

[0018] As shown in FIG. 3, when the users want to lower the curtain, the operation portion 17 is pushed upward, the tension of the operation portion 17 is loosened, and the movable part 13 moves toward the fixed part 14. The tension rope 11 lowered, and the curtain and the bottom rail 20 are lowered due to gravity.

[0019] As shown in FIG. 4, when the users want to lift the curtain, the operation portion 17 is pulled downward, the movable part 13 moves away from the fixed part 14, and the tension rope 11 is lifted to lift the curtain.

[0020] The handle 18 is designed for convenience of operation to the operation portion 17.

[0021] The operation portion 17 has a handle 18 connected to the distal end thereof. The tension rope 11 wraps around the movable part 13 eight laps while the driving rope 16 wraps around the movable part 13 one lap. Therefore, when the operation portion 17 is moved one centimeter, the curtain moves eight centimeters. This saves effort of the users.

[0022] While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.