Cordless Roller Shade

Abstract

A cordless roller shade includes at least an upper elongate support, a lower elongate support, an anchor seat and an automatic winding means. The anchor seat and the automatic winding means are installed on two end of the upper elongate support. A shade assembly also is provided that has an axle at one side coupling with the anchor seat and rotatable. The automatic winding means has a second cap assembly hinged a second cap inside that has a second shaft on another side. The second cap holds a wound elastic element inside. The second shaft is coupled with the axle of the shade assembly. Through rotation of the second cap the cordless roller shade can be retracted and extended easily and smoothly.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a cordless roller shade and particularly to a shade that has an automatic winding means and an anchor seat that are coupled together to automatically control retraction and extension of the cordless roller shade to facilitate operation.BACKGROUND OF THE INVENTION[0002]There are many different types of window coverings on the market such as Venetian blinds, pleated window coverings, roman shades and the like. They mainly aim to be installed at doors and windows of houses to block sunshine and serve decorative purpose. Depending on different user requirements some window coverings have a lift cord to control retraction and extension for lifting or lowering. For a single panel window coverings 10 a winding buffer means 11 is usually adopted. The winding buffer means 11 mainly includes a case, a sleeve, an external coupling member, a lid and a rotary element. To extend the shade, winding is made clockwise and the sleeve rotate...

AI Technical Summary

Benefits of technology

[0003]The present invention aims to provide a cordless roller shade to resolve the aforesaid problem of the conventional window coverings that cannot be anchored at a selected elevation during retraction or extension, and also take into account of safety issue. Through rotation of an automatic winding means the cordless roller shade can be retracted and extended easily and smoothly to facilitate operation.

[0005]By means of the structure set forth above, the automatic winding means installed on the other end of the upper elongate support can transmit and control retraction and extension of the cordless roller shade. Operation is easier and smoother.

Problems solved by technology

The winding buffer means 11 thus constructed has drawbacks, notably the window coverings can only be extended smoothly and retracted slowly in a given direction due to structural restriction.

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