Importance

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Abstract

A cordless shade roller is revealed. The cordless shade roller includes a roller tube, a passive-end bracket set on a first end of the roller tube, and an active-end bracket disposed on a second end of the roller tube. The active-end bracket is a cap formed by assembly of a first cover with a second cover and having a narrow space therein. An S-shaped constant force spring is clipped in the narrow space of the cap. The S-shaped constant force spring consists of a first wound roll used as a storage drum, a second wound roll used as an output drum, and an S-shaped spring strip wound around the first wound roll and the second wound roll reversibly. No baffle is disposed on each of two sides of the first wound roll and of the second wound roll.

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First Claim