Patent ID: 8356653
Filing Date: 2013-01-22
Classification: E06B

Abstract:
1. A control module adapted for being operatively connected to an axle of a window shade having a motor mechanism on the axle, the control module being operable to raise and lower the window shade, the control module comprising: a brake mechanism mounted with the axle and having a locking state and an unlocking state; a brake release operably connected to the brake mechanism and movable between a first position corresponding to the locking state of the brake mechanism and a second position corresponding to the unlocking state of the brake mechanism; a cord drum adapted to be selectively connected to the axle and operably connected to the motor mechanism; and a clutch adapted to be mounted on the axle, the clutch having a coupled state in which the clutch rotationally couples with the cord drum and the axle such that the cord drum and the axle are operable to rotate in unison to raise the window shade, and an uncoupled state in which the cord drum and the axle are operable to rotate independently relative to each other, wherein the clutch comprises: a first coupling element having a guide track and coaxially assembled with a second coupling element, the first coupling element adapted to operatively engage the cord drum; the first and second coupling elements configured to rotate with respect to each other to form a first configuration corresponding to the uncoupled state of the clutch and a second configuration corresponding to the coupled state of the clutch; and a track member rotationally coupled with the axle and movable along the guide track; wherein the track member is movable along the guide track when the first and second coupling elements are in the first configuration, and wherein the track member engages the first and second coupling elements when the first and second coupling elements are in the second configuration such that rotational movement of the coupling elements is transmissible to the axle and the cord drum.