Patent ID: 9284774
Filing Date: 2016-03-15
CPC Classification: E06B

Claim Text:
1. An actuating system for a window shade, comprising: a transmission axle; a spring drive unit operable to urge the transmission axle to rotate in a first direction for raising a shading structure of the window shade; and a control module including an arrester assembled around the transmission axle, an operating cord operatively connectable with the transmission axle, and a release unit having an actuator operatively connected with the arrester, the actuator having an elongated shape extending along a lengthwise axis, and the operating cord extending through an interior of the actuator; the arrester having a locking state in which the arrester acts against the spring drive unit to block a rotational displacement of the transmission axle in the first direction, and an unlocking state in which rotation of the transmission axle is allowed; the operating cord being operable to turn the arrester from the locking state to the unlocking state and to drive rotation of the transmission axle in a second direction opposite to the first direction for lowering the shading structure of the window shade; and the actuator being operable to rotate about the lengthwise axis to drive the arrester to switch from the locking state to the unlocking state.