The invention discloses a foldable link mechanism for stepladder door handrails. The foldable link mechanism comprises a second connection rod, triangular plates, a movable lug plate, a supporting rod and a lower handrail connection rod, wherein the second connection rod is hinged to the triangular plates through a first shaft wire, the triangular plates are hinged to the movable lug plate through a second shaft wire, the movable lug plate is hinged to the supporting rod through a fourth shaft wire, the supporting rod is hinged to the lower handrail connection rod through a third shaft wire, and the lower handrail connection rod is hinged to the triangular plates through a fifth shaft wire. The foldable link mechanism has the advantages that the structural form is simple, folding and unfolding are smooth and reliable, operation is convenient, all the rod parts are tightly folded after stepladder doors are put away, and the occupied space is small.
Foldable link mechanism for stepladder door handrails
2015-12-23
Patent
Elektronische Ressource
Englisch
IPC: | B64C AEROPLANES , Flugzeuge |