Retention systems for window treatment installations

An impact-absorbing retention bracket comprising:

• a front wall that defines opposed upper and lower ends, at least a portion of the front wall extending along a transverse direction, the front wall including:
• an inwardly angled portion that forms an angle of less than ninety degrees with respect to the transverse direction;
• and
• an L-shaped portion attached to the inwardly angled portion, the L-shaped portion including a plurality of apertures;
• a rear wall that defines an upper end and an opposed lower end;
• an upper wall, the upper wall including a planar member that physically couples the upper end of the front wall to the upper end of the rear wall, the upper wall coupled at a right angle to the upper end of the front wall, the upper wall including one or more apertures to accept the passage of a fastener to attach the retention bracket to an architectural element of a structure;
• and
• an L-shaped lower wall nested under the L-shaped portion of the front wall, the L-shaped lower wall comprising an upper section contacting a front surface of the L-shaped portion of the front wall, and a lower section contacting a bottom surface of the L-shaped portion of the front wall, the L-shaped lower wall extending perpendicularly from the front wall, the L-shaped lower wall including a plurality of apertures that correspond to a plurality of apertures in the L-shaped portion of the front wall, each of the pluralities of apertures configured to accommodate passage of each of a corresponding plurality of fasteners;
• wherein the L-shaped lower wall and the lower end of the rear wall form an opening through which a shade material of a roller shade assembly raises and lowers;
• wherein the opening is narrower than a diameter of a roller tube of the roller shade assembly to prevent passage of the roller shade assembly upon detachment of the roller shade assembly from the mounted position;
• wherein when the retention bracket is attached to the structure, the front wall and the L-shaped lower wall are configured to at least partially enclose a portion of the roller shade assembly that is attached to the structure in a mounted position,
• wherein the transverse direction extends perpendicular to an axis of rotation of the roller shade assembly;
• and
• wherein the inwardly angled portion of the front wall angles inwardly towards the roller shade assembly.