Power supply mechanism for long-stroke seat

A power supply mechanism for a long-stroke seat firmly situated on top of an upper slide rail that is slidably connected to a lower slide rail, the power supply mechanism consisting essentially of:

• a wire harness accommodation box having at least one accommodation space and at least one opening in communication with the accommodation space;
• a drag chain movably received in the accommodation space in a closed U shape and directly extendably out of the wire harness accommodation box from the opening to be received inside the lower slide rail and connected to the upper slide rail, the drag chain having a first end securely fixed to the wire harness accommodation box and a second end securely connected to the upper slide rail such that when the upper slide rail moves, the drag chain is moved inside the wire harness accommodation box and the lower slide rail;
• and
• a drag chain adapter sandwiched between the wire harness accommodation box and the lower slide rail so that the drag chain is able to smoothly move between the wire harness accommodation box and the lower slide rail;
• wherein a rail slot having an upper opening is provided on the drag chain adapter for the lower slide rail to be vertically snap-fitted therein, and the upper opening of the rail slot is covered by a slide rail end cover.