Quick fitting and protection mechanism for wire harness in slide rail

A quick fitting and protection mechanism for a wire harness in a slide rail, wherein the slide rail has an upper slide rail and a lower slide rail that are slidable relative to each other, the lower slide rail has a slideway for the upper slide rail to slide in, and the mechanism comprises:

• a drag chain for the wire harness to be threaded through;
• a drag chain towing support connected to the upper slide rail and slidable in the slideway of the lower slide rail with the upper slide rail, wherein the drag chain towing support has a drag chain port, a wire harness outlet, and a first channel affording communication between the drag chain port and the wire harness outlet, wherein one end of the drag chain is connected to the drag chain port;
• and
• a wire harness guide support having a wire harness entry, a wire harness exit, and a second channel affording communication between the wire harness entry and the wire harness exit, wherein the wire harness entry is in rotatable communication with the wire harness exit, and a rail fixing portion is disposed at the wire harness exit, wherein the rail fixing portion is detachably connected to the upper slide rail.