Cord drive for coverings for architectural openings

A covering assembly for an architectural opening, said covering assembly comprising:

• a rail;
• a covering operatively coupled to said rail;
• a rod extending lengthwise within said rail along a rotational axis;
• a secondary rod extending lengthwise within said rail;
• a housing positioned within said mil and defining first and second rod openings along an exterior of said housing that are aligned along the rotational axis, said rod extending along the rotational axis through said first and second rod openings such that a portion of said rod extends within an interior of said housing between said first and second rod openings;
• and
• a drive motor positioned within said interior of said housing, said drive motor being configured to rotationally drive said rod such that said rod rotates relative to said housing about the rotational axis;
• wherein:
• said housing further defines first and second pass-through openings along the exterior of said housing that are separate from said first and second rod openings and aligned with each other such that a pass-through location is defined within the interior of said housing along a pass-through axis extending through both said first pass-through opening and said second pass-through opening;
• said secondary rod extends through said first and second pass-through openings along the pass-through axis such that a portion of said secondary rod extends within the interior of said housing;
• and
• rotation of said secondary rod relative to said housing results in an adjustment of a position of at least a portion of said covering.