Cord lock unit for drape or blind assembly

A horizontal window covering assembly comprising a hollow channel-shaped header unit defined by a plurality of outer walls, a pair of mutually spaced apart pull cords extending upwardly into said header unit, along the interior of said header unit and downwardly from said header unit through a cord lock unit disposed in an opening in at least one of said walls of said header unit, and said opening being defined by a peripheral edge, and which cord lock unit comprises:

• a first exterior portion larger than said opening in said header unit;
• a second interior portion secured to said first portion and dimensioned so as to be insertable through said opening in said interior of said header unit with said first portion extending outwardly on said exterior beyond said peripheral edge of said opening;
• resilient engagement means integral with said cord lock unit adapted to be deflected during insertion of said second portion through said opening to permit such insertion and to pass therethrough from the exterior to the interior and resiliently to return to a position after such insertion whereby to engage said interior and to retain said cord lock unit in position within said opening and being resiliently disengageable for release of said cord lock unit.
• pulley means for guiding said pull cords for movement through said cord lock unit, and,
• releasable cord-engaging means movable between a cord-engaging position and a cord-releasing position for engaging said cords in said cord-engaging position to prevent movement thereof and for permitting movement of said cords in said cord-releasing position.

A cord lock unit for use in a window covering assembly comprising a hollow channel-shaped header unit defined by a plurality of outer walls, defining an interior and an exterior, a pair of mutually spaced apart pull cords extending upwardly into said header unit along said interior of said header unit and downwardly from said header unit through an opening in at least one of said walls of said header unit to said exterior, and said opening being defined by a peripheral edge;

• and which cord lock unit comprises:
• a first lower exterior portion larger than said opening in said header unit, adapted to be located on said exterior of said header unit;
• a second upper interior portion secured to said first portion and being smaller than said first portion and dimensioned so as to be insertable through said opening in said header unit into said interior with said first portion extending outwardly beyond said peripheral edge of the opening on said exterior;
• resilient engagement means provided integrally on said upper interior portion so as to be deflected during insertion of said upper interior portion through said opening to permit such insertion and resiliently to return to a position after such insertion whereby to engage said interior of said header unit and to retain said cord lock unit in position within said opening by resilient engagement and being disengageable for release of said cord lock unit;
• pulley means for guiding said pull cords for movement through said cord lock unit, and,
• releasable cord-engaging means movable between a cord-engaging position and a cord-releasing position for engaging the cords in said cord-engaging position to prevent movement thereof and for permitting movement of said cords in said cord-releasing position.

A cord lock unit for use in a window covering assembly comprising a hollow channel-shaped header unit defined by a plurality of outer walls, defining an interior and an exterior, a pair of mutually spaced apart pull cords extending upwardly into said header unit along said interior of said header unit and downwardly from said header unit through an opening in at least one of said walls of said header unit to said exterior, and said opening being defined by peripheral side and end edges and which cord lock unit comprises:

• an upper interior body portion, in turn, having side walls and end walls, defining in section a generally rectangular shape;
• abutment means formed on said end walls, being spaced apart a distance greater than the spacing between said end edges of said opening, and positioned to engage said interior of said header unit;
• resilient flexible tongues formed integrally with respective said end walls of said body portion, and adapted to extend through said opening adjacent each of said end edges;
• shoulders on respective said tongues, adapted to engage the exterior of said walls of said header unit, outwardly of said opening, adjacent each said peripheral end edge thereof, said tongues being resiliently flexible, whereby upon insertion of said body portion into said header unit, and upon introduction of said flexible tongues into said opening from the interior, said flexible tongues will flex towards one another, allowing the said shoulders to pass through said opening to the exterior of said header unit, and then, resiliently to engage said exterior of said header unit, and being resiliently disengageable for release of said cord lock unit from said header unit;
• pulley means for guiding said pull cords for movement through said cord lock unit, and,
• releasable cord-engaging means movable between a cord-engaging position and a cord-releasing position for engaging the cords in said cord-engaging position to prevent movement thereof and for permitting movement of said cords in said cord-releasing position.