Retractable window curtain device

Abstract

A retractable window curtain device, the structural configuration of which is comprised of a top curtain rail, a middle curtain rail, a bottom curtain rail, a curtain, two pulleys, parallel thinness rods, rings, hooks, the first draw cord, the first vertical strings, the second draw cord, and the second vertical strings. The first draw cord is used to control the fixed top curtain rail and the activity of curtain that between the top and the bottom curtain rails. The second draw cord is used to control the middle curtain rail and the activity of curtain that between the middle and the bottom curtain rails. By way of foregoing invention to safely and conveniently assemble and disassemble the curtain that is stuck between the middle and bottom curtain rails.

Description

TECHNICAL FIELD OF THE INVENTION

The invention herein relates to a retractable window curtain device. Especially use the second draw cord to flexibly control the curtain up or down. The invention not only can achieve the purpose of safely and conveniently assembling and disassembling the curtain, but also make the retractable window curtain device has many different applications.

BACKGROUND OF THE INVENTION

Traditional window curtains use one ball chain draw cord that is installed on a pulley to draw curtains; however, these kinds of window curtains that are fixed on the top of windows not only cannot easily assemble or disassemble curtains, but also have to concern about safety if position of windows are higher. In order to solve these problems, the applicant proposed a retractable window curtain device that has simple structure and low cost.

The retractable window curtain device is using the second draw cord to flexibly control the activity of middle curtain rail to safely and conveniently assemble and disassemble the curtain that is stuck on the middle curtain rail by hook and loop fastener tapes or other adhesive devices. The retractable window curtain device has many different applications, such as adjusting light, instead of stickers, being a screen, an advertising board, a scenery . . . and so on. Therefore, the structural design of the retractable window curtain is very originality. Until now, there is no similar product put on markets.

SUMMARY OF THE INVENTION

The retractable window curtain device includes: a top curtain rail that is fixed on top of windows; a middle curtain rail that is stuck on top of windows by an adhesive device; a bottom curtain rail that is stuck on end of curtain by an adhesive device; a curtain that is stuck between the middle and bottom curtain rails by adhesive devices; two pulleys that are fixed on one side of the top curtain rail; a plurality of parallel thinness rods that are fixed on curtain for same distance; a plurality of rings that are joined to the curtain with hooks; a first draw cord that is installed on a pulley works with the pulley and a transmission shaft to make the first vertical string through rings to draw or lay down the curtain; and a second draw cord that is installed on the other pulley works with the pulley and a transmission shaft to make the middle curtain rail up or down. Combining these components, the first draw cord can control the activity of curtain between the top and bottom curtain rails; the second draw cord can control the activity of curtain between the middle and bottom curtain rails. By way of foregoing invention to safely and conveniently assemble and disassemble the curtain that is stuck between the middle and bottom curtain rails.

For better choice, the material of curtain is cloth.

For better choice, the material of curtain is wood.

For better choice, the material of curtain is bamboo wood.

For better choice, the adhesive device is a hook and loop fastener tape that is produced by any kind of material.

For better choice, the first and second draw cords are ball chain draw cords that are produced by any kind of material.

For better choice, the first and second vertical strings are any kind of material.

For better choice, the hooks are joined on intersections of each parallel thinness rod and the first vertical string.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a view of structure of traditional window curtain that draws curtains to left and right.

FIG. 2 is a view of back structure of traditional window curtain that draws curtains up or down.

FIG. 3 is a view of back structure of the inventive retractable window curtain device.

FIG. 4 is a view of using state of the retractable window curtain device.

DETAILED DESCRIPTION OF THE INVENTION

Referring to FIG. 1, this is a structure of traditional window curtain that draws curtains to left or right. The traditional window curtain 1 that draws curtains to left or right is manually pulling ball chain draw cord 13 to make rollers of pulleys 11 roll into the track of tubular frame 12. Then the curtains 10 start to retrace to left and right sides.

Referring to FIG. 2, this is a back structure of traditional window curtain that draws curtains up or down. This figure is one kind of structure of traditional window curtain that draws curtains up or down. A traditional window curtain 2 that draws curtains up or down is manually pulling ball chain draw cord 26 to make rollers of pulleys 21 roll and then the vertical strings 22 that in the tubular frame 20 will draw the curtain 27 up or down. In the FIG. 2, the curtain 27 is fixed by parallel thinness rods 23. Hooks 24 that are used to connect rings 25 are joined on intersections of each vertical string 22 and parallel thinness rod 23, and vertical strings 22 are through rings 25 to make the curtain 27 smoothly up or down. Due to above-mentioned the two traditional window curtains have problems of unsafely and inconveniently assemble and disassemble curtains, the applicant proposed the retractable window curtain device with double pull strings.

Referring to FIG. 3, this is the back structure of the inventive retractable window curtain device. The figure is one of appearances of the retractable window curtain device. The invention of retractable window curtain device 3 is to improve the traditional window curtain that draws curtains up or down in FIG. 2 to have double pull strings and the middle curtain rail 31 that can be flexibly controlled. When pulls the first draw cord 34, the pulley 33 will roll and then the first vertical string 37 on the top curtain rail 30 will be affected. With working of the first vertical string 37, parallel thinness rods 36, hooks 39 and rings 391, the bottom curtain rail 32 will be steadily pulled up or down, and then the curtain 392 will also be steadily pulled up or down. (The working action of the first vertical string 37 is let hooks 39 on parallel thinness rods 36 join rings 391, and the first vertical string 37 will through rings 391 to bind the bottom curtain rail 32.) When pulls the second draw cord 35, the pulley 33 will roll. The second vertical string 38 that suspended between the top curtain rail 30 and the middle curtain rail 31 will make the middle curtain rail 31 to steadily draw the curtain 392 from top to end, and this is the design of safely and conveniently assembling and disassembling the curtain.

Referring to FIG. 4 to more understand technical characteristics of this invention. The FIG. 4 is the illustration for using the retractable window curtain device 4, and the description as follows:

The structure of the retractable window curtain device 4 in FIG. 4 is as same as the structure in FIG. 3, and the purpose in FIG. 4 is showing the using status of the retractable window curtain device 4. The retractable window curtain device 4 is to improve the traditional window curtain that draws curtains up or down in FIG. 2 to have double pull strings and the middle curtain rail 41 that can be flexibly controlled. When pulls the first draw cord 44, the pulley 43 will roll and then the first vertical string 47 on the top curtain rail 40 will be affected. With working of the first vertical string 47, parallel thinness rods 46, hooks 49 and rings 491, the bottom curtain rail 42 will be steadily pulled up or down, and then the curtain 492 will also be steadily pulled up or down. (The working action of the first vertical string 47 is let hooks 49 on parallel thinness rods 46 join rings 491, and the first vertical string 47 will through rings 491 to bind the bottom curtain rail 42.) When pulls the second draw cord 45, the pulley 43 will roll. The second vertical string 38 that suspended between the top curtain rail 40 and the middle curtain rail 41 will make the middle curtain rail 41 to steadily draw the curtain 492 from top to end, and this is the design of safely and conveniently assembling and disassembling the curtain.

To sum up, the invention is improving problems of inconveniently and unsafely disassembling or assembling curtains of traditional window curtains. The retractable window curtain device has double pull strings and the middle curtain rail that can be flexibly controlled to make the retractable window curtain device has many different applications.

In summation of the foregoing section, since the retractable window curtain device of the invention herein is original and innovative in structure, capable of achieving its claimed objectives, and meets all new patent application requirements, the present invention is submitted for review and the granting of the commensurate patent rights.

Claims

1. A retractable window curtain device, comprising:

a top curtain rail, which is fixed on top of window;

a middle curtain rail, which is stuck on top of windows by an adhesive device;

a bottom curtain rail, which is stuck on end of curtain by an adhesive device;

two pulleys, which are fixed on one side of the top curtain rail;

a plurality of parallel thinness rods, which are fixed on curtain for same distance;

a plurality of rings, which are joined to the curtain with hooks;

a first draw cord that is installed on a pulley works with the pulley and a transmission shaft to make the first vertical string through rings to draw or lay down the curtain; and

a second draw cord that is installed on the other pulley works with the pulley and a transmission shaft to make the middle curtain rail up or down.

Combining these components, the first draw cord can control the activity of curtain between the top and bottom curtain rails; the second draw cord can control the activity of curtain between the middle and bottom curtain rails. By way of foregoing design to achieve the purpose of safely and conveniently assembling and disassembling the curtain that is stuck between the middle and bottom curtain rails.

The retractable window curtain device of claim 1 wherein the material of curtain is cloth.

2. The retractable window curtain device of claim 1 wherein the material of curtain is wood.

3. The retractable window curtain device of claim 1 wherein the material of curtain is bamboo wood.

4. The retractable window curtain device of claim 1 wherein the adhesive device is a hook and loop fastener tape that is produced by any kind of material.

5. The retractable window curtain device of claim 1 wherein the first and second draw cords are ball chain draw cords that are produced by any kind of material.

6. The retractable window curtain device of claim 1 wherein the first and second vertical strings are any kind of material.

7. The retractable window curtain device of claim 1 wherein the hooks are joined on intersections of each parallel thinness rod and the first vertical string.