Patent ID: 7320354
Filing Date: 2008-01-22
Classification: E06B

Abstract:
1. A pulling cord winding apparatus for window shades installed on a bottom rail of a window shade to retract and extend pulling cords located on two sides of the window shade, comprising: an upper cap and a lower seat that are coupled together; two elastic take-up reels corresponding to holding struts located in a center housing compartment formed on the lower seat; two elastic coils held in the elastic take-up reels having two ends latched on the elastic take-up reels; a pair of elastic reeds on opposing sides of a post located on one side of the lower seat and each reed is connected to a respective one of two brake elements; and a push rod located between the two brake elements to form a forced contact therewith; wherein the push rod is depressible and retractable to move a ramming element on one end thereof to press the brake elements to allow a coarse surface formed on an outer side of the brake elements to he spaced from the two elastic take-up reels to form a braking or rotating condition and allow the two elastic coils to retract or extend to extend or retract the window shade to a selected location.