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Foldable window blind

a window blind and folding technology, applied in the field of windows, can solve the problems of inconvenient use of conventional foldable window blinds, difficulty in moving the counterweight rod, etc., and achieve the effect of moving vertically with eas

Inactive Publication Date: 2006-05-18
WU WEN TE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The invention is a foldable window blind with a counterweight device that can be easily moved vertically. The blind includes a cord-winding device with pull cords and a positioning unit with movable positioning members. The curtain is suspended from the cord-winding device and has a counterweight device with two supporting rods that can be moved upward to fold the curtain. The positioning members are located between the curtain folds and allow for easy access to the counterweight device. The technical effect of this invention is that it provides a convenient and easy-to-use foldable window blind with a counterweight device that can be moved vertically."

Problems solved by technology

The conventional foldable window blind is disadvantageous in that, when located at the uppermost position, the counterweight rod 27 is disposed behind the curtain folds 222, and has a lower end that is much higher than that of the lowermost curtain fold 222.
As such, it is difficult to move the counterweight rod 27 downwardly from the uppermost position.
This results in inconvenient use of the conventional foldable window blind.

Method used

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Examples

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Embodiment Construction

[0016] Before the present invention is described in greater detail in connection with the preferred embodiments, it should be noted that similar elements and structures are designated by like reference numerals throughout the entire disclosure.

[0017] Referring to FIGS. 3 and 4, the first preferred embodiment of a foldable window blind according to this invention is shown to include a cord-winding device 3, a foldable curtain 4, a positioning unit 5, a vertical row of spaced-apart horizontal suspended rods 6, and a counterweight device 7.

[0018] The cord-winding device 3 includes a horizontal rail 31, a spring-loaded spool unit 32 disposed on the rail 31 in a known manner, and two spaced-apart pull cords 33 suspended respectively from two end portions of the rail 31 and biased to be wound on the spool unit 32 in a known manner.

[0019] The curtain 4 is made of a fabric, is suspended from the cord-winding device 3, and is disposed in front of the pull cords 33. An upper end of the cur...

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PUM

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Abstract

A foldable window blind includes a cord-winding device, a foldable curtain suspended from the cord-winding device, two vertical rows of positioning members, and a counterweight device. The cord-winding device includes a rail, a spool unit, and two pull cords suspended from the rail and biased to be wound on the spool unit. Each of the positioning members is sleeved movably on a corresponding one of the pull cords, and is fastened to the curtain. The counterweight device is fastened to a lower end of the curtain, and is movable upwardly to an upper limit position so as to fold the curtain to form a plurality of curtain folds. When the counterweight member is disposed at the uppermost position, a lower end of the counterweight device is located below lower ends of the curtain folds.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] This invention relates to a window blind, and more particularly to a foldable window blind that includes a curtain and a counterweight device, which is movable vertically to fold the curtain. [0003] 2. Description of the Related Art [0004] Referring to FIGS. 1 and 2, a conventional foldable window blind is shown to include: a rail 21; a foldable curtain 22 suspended from the rail 21; two vertical rows of cord-retaining rings 23 fastened to a rear side surface of the curtain 22; a spring-loaded spool unit 24 disposed on the rail 21; two pull cords 25 suspended respectively from two end portions of the rail 21 and biased to be wound on the spool unit 24, the pull cords 25 extending respectively through the two rows of the cord-retaining rings 23; a vertical row of horizontal suspended rods 26 fastened to a front side surface of the curtain 22; and a horizontal counterweight rod 27 connected fixedly to a lower end of t...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A47H5/00
CPCE06B9/262E06B2009/2622
Inventor WU, WEN-TE
Owner WU WEN TE