Motor driven seat slide mechanism

Abstract

A motor-driven seat slide mechanism comprising a cushion assembly; spaced apart, first and second telescopically extendable guide rail structures one for each side of the cushion assembly, each of the telescopically extendable guide rail structures including upper and lower guide rail members connected one above the other for axial movement relative to each other, the upper and lower guide rail members being connected to the cushion assembly and a floor panel of an automobile body structure, respectively; an electrically powered drive motor; at least one gear box including a worm gear drivingly coupled with the drive motor and a worm wheel drivingly meshed with the worm gear; a releaseable bearing assembly rigidly connected to such upper rail member of the first telescopically extendable guide rail structure; a constraint member mounted on an automobile floor panel and having a threaded bore through which the screw shaft threadingly extends; and at least one screw shaft extending in a direction parallel to the longitudinal axis of such upper guide rail in spaced relation thereto and having its opposite end portions journalled removably to the releaseable bearing assembly and the worm wheel.