Importance

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Abstract

A single-cord control device for roller blind comprises a front base comprising a space covered by a lid for setting a winding element which has a winding channel, an abutting block, and a space for locating a spiral spring, and a rear base comprising a step hole and several blocks. A second shaft inserted into the step hole comprises two tubular sections and two elastic elements covering the tubular sections and an inner and an outer shaft sheath. A first shaft is inserted into the center of the lid and one tubular section, and a curtain torque rod is assembled into a through-hole of the second shaft. The outer shaft sheath comprises a path for the abutting block moving. Therefore, the roller blind is controlled by the single-cord to roll up and down, which cord is wound around the winding element to prevent child from being wound around neck.

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First Claim