Universal wheel assembly and smart cleaning device having same

A smart cleaning device, comprising a universal wheel assembly, wherein the universal wheel assembly is arranged at a bottom of the smart cleaning device and comprises:

• a rotating shaft support, wherein the rotating shaft support is configured to be fixed to a predetermined mounting position;
• and
• a universal wheel support, wherein the universal wheel support is connected to the rotating shaft support and is rotatable relative to the rotating shaft support, wherein
• the universal wheel support is provided with a through hole, and the through hole is used for a mounting tool to pass through to fix the rotating shaft support to the predetermined mounting position;
• the universal wheel assembly is further provided with a rotating shaft for connecting the rotating shaft support and the universal wheel support;
• the rotating shaft support is provided with a mounting hole, and a distance between a center line of the mounting hole and a rotation axis of the rotating shaft is equal to a distance between a center line of the through hole and the rotation axis of the rotating shaft, so as to more accurately fix the rotating shaft support to the predetermined mounting position;
• stopper ribs are evenly arranged on the rotating shaft support around a center line of the rotating shaft support in a circumferential direction;
• the rotating shaft support is provided with an elastic buckle, the elastic buckle is squeezed to a deformed position when the rotating shaft is inserted into the rotating shaft support, and the elastic buckle is reset to an initial position by means of elastic force when the rotating shaft is inserted in place, to restrict movement of the rotating shaft toward the universal wheel support;
• and
• the rotating shaft support, the stopper ribs, and the elastic buckle are a monolithic one-piece construction.