Window covering

摘要

A window covering comprises an upper rail, a window shade located below the upper rail, a lower rail located below the window shade, a first clamping assembly and a second clamping assembly located at two sides of the lower rail and spaced from each other, and a cord winding assembly located in the lower rail to connect to the first clamping assembly and the second clamping assembly. A first cord and a second cord run through two opposite sides of the window shade to fasten to the cord winding assembly. The lower rail can be moved upwards or downwards by a user to retract or expand the window shade through the first and second cord. Besides, the distal ends of the first and second cords can be hidden in the cord winding assembly in the lower rail, thus can prevent the cords from entangling children to avoid accidents.

主权项

1. A window covering, comprising:
an upper rail; a window shade which is located below the upper rail and includes a first cord and a second cord; a lower rail located below the window shade; a cord winding assembly which is located in the lower rail and includes a body, the body including a first housing formed inside the body and a first recess portion and a second recess portion that are located on two opposite lateral sides of the body respectively, the first recess portion including a first hole for communicating the first housing with the first recess portion, the second recess portion including a second hole for communicating the first housing with the second recess portion; a first clamping assembly, located in the lower rail and including a first sleeve, a first slide member slidably held inside the first sleeve and a first elastic element which is disposed in the first sleeve and abuts the first slide member, the first sleeve including a first wedge flame to wedge in the first recess portion of the body and two first apertures corresponding to the first hole, the first slide member including two first bores corresponding to the two first apertures of the first sleeve respectively; and a second clamping assembly, located in the lower rail and including a second sleeve, a second slide member slidably held inside the second sleeve and a second elastic element which is disposed in the second sleeve and abuts the second slide member, the second sleeve including a second wedge flange to wedge in the second recess portion of the body and two second apertures corresponding to the second hole, the second slide member including two second bores corresponding to the two second apertures of the second sleeve respectively; wherein the first cord includes an upper end threading through and fastened to a lower end of the upper rail and a lower end which threads through the window shade, the interior of the lower rail, the two first apertures and the two first bores of the first clamping assembly and the first hole of the body to fasten to the cord winding assembly, and wherein the second cord includes an upper end threading through and fastened to a lower end of the upper rail and a lower end which threads through the window shade, the interior of the lower rail, the two second apertures and the two second bores of the second clamping assembly and the second hole of the body to fasten to the cord winding assembly; wherein the body further includes a first detent member which extends towards the first recess portion to contact one end of the first slide member remote from the first elastic element and a second detent member which extends towards the second recess portion to contact one end of the second slide member remote from the remote elastic element, the first slide member being pushed by the first elastic element and blocked by the first detent member simultaneously so that the two first bores and the two first apertures keep overlapping with each other to movable hold the first cord, the second slide member being pushed by the second elastic element and blocked by the second detent member simultaneously so that the two second bores and the two second apertures keep overlapping with each other to movably hold the second cord.