Torque transfer coupler with anti-slip feature for roller blind drive mechanism

A torque transfer coupler for a roller blind, the roller blind having a roller tube having a generally hollow interior capable of receiving an electric motor within an end thereof, the motor for imparting rotational movement to the roller tube, the torque transfer coupler comprising:

• a central body securable to the electric motor and receivable within the interior of the roller tube, said central body including one or more torque transfer elements engaging the interior of the roller tube when the motor is received therein such that rotational torque is transferred through said central body from the motor to the roller tube, and
• one or more anti-slip members having one or more resilient portions, said one or more resilient portions having a rest position and a deflected position, when said resilient portions are in said rest position said one or more anti-slip members having a dimension larger than the cross sectional area of the hollow interior of the roller tube such that insertion of said torque transfer coupler into the roller tube causes said resilient portions to be moved to said deflected position, when in said deflected position and received within the roller tube said resilient portions engaging an interior surface of the roller tube resisting the withdrawal of the torque transfer coupler, and the electric motor secured thereto, from the interior of the roller tube.