LOW-DEFLECTION ROLLER SHADE TUBE FOR LARGE OPENINGS

摘要

A low-deflection roller tube of a motorized roller shade may have an outer diameter that does not exceed 2 inches. When a covering material is attached to the roller tube and the roller tube is supported at opposed ends thereof, deflection of a 10 foot configuration of the roller tube may not exceed ⅛ of an inch, and deflection of a 12 foot configuration of the roller tube may not exceed ¼ of an inch, relative to corresponding unloaded positions of the roller tubes. The roller tube may comprise a plurality of layers of carbon fiber, or may comprise an inner tube that is made of a first material, such as aluminum, and a carbon fiber outer tube that is formed on the inner tube. At least one layer, such as an outermost layer, may comprise high modulus carbon fiber.

主权项

1. A motorized window treatment comprising:
a roller tube that is elongate along a longitudinal direction from a first end to an opposed second end, the roller tube defining:
a length of at least ten feet along the longitudinal direction; andan outer diameter that does not exceed two inches; a motor drive unit that is at least partially received in the roller tube; and a covering material that is attached to the roller tube, the covering material operable between a raised position and a lowered position via rotation of the roller tube by the motor drive unit, wherein when the roller tube is supported at the first and second ends, deflection of the roller tube does not exceed one eighth of an inch.