STEP MOUNTING MECHANISM AND MOTORIZED DEVICE

A step mounting mechanism includes a mounting seat, a drive component, a first connecting rod, a second connecting rod and a step mounting member. The mounting seat is provided with first and second shaft holes. The drive component is connected to a drive shaft. Two ends of the first connecting rod are provided with third and fourth shaft holes. A first sealing shaft sleeve is fitted over the drive shaft, and is at least partially located in the first shaft hole. Two ends of the second connecting rod are provided with fifth and sixth shaft holes, and the second and fifth shaft holes are hinged through a first hinge shaft. The step mounting member is provided with seventh and eighth shaft holes, the fourth and seventh shaft holes are hinged through a second hinge shaft, and the sixth and eighth shaft holes are hinged through a third hinge shaft.