Bottom pivot assembly for folding doors

摘要

A four piece bottom pivot assembly for undersupporting the lower end of a pivotally mounted door panel in a bi-fold door assembly in which a bottom pivot pin is non-rotatably locked into a tubular sleeve extending into a socket formed in the bottom end of the door panel. The pivot pin is formed with a threaded shank having a guide portion at its upper end which slidingly cooperates with guideways in the sleeve to prevent rotation of the pivot pin. An adjustment wheel is threaded onto the threaded shank of the pivot pin and is rotatably coupled to the bottom end of the sleeve such that rotation of the wheel threadingly actuates the pivot pin coaxially of the sleeve to adjust door height. A detent system removably holds the wheel in selected rotational positions. The pivot pin is formed with a shoulder adjacent its cylindrical outer end which limits insertion of such outer end through an elongated slot having serrated edges formed in an underlying arm of a floor engaging pivot bracket; the pivot pin engaging and being held between adjacent serrated edges of the pivot bracket slot to align the door panel's vertical pivot axis.