Window treatment operating apparatus with cycloidal drive

摘要

An apparatus for selectively activating a window treatment includes an input member, such as a pulley activated by a bead chain, an output member such as a sleeve activating a mandrel, a stationary guard for mounting the window treatment and a rotor. The rotor, pulley, and stationary base are coupled to form a cycloid drive, wherein rotation of the pulley causes the rotor to precess with respect to the pulley.

主权项

1. A window treatment apparatus for operating a window treatment, said apparatus comprising:
a base for supporting an end of the window treatment, said base being stationary during the operation of the window treatment; an input member selectively activated by a control member, said input member including a pulley; a rotor coupled to said input member; a gear disposed between said pulley and said rotor; and an output member connected to said window treatment for operating said window treatment when said input member is activated by the control member; wherein said rotor and said base cooperate to form a cycloidal drive that transmits rotational motion from said input member to said output member.