Non-slip plastic chair and non-slip detection device therefor

A non-slip plastic chair, comprising a chair cover and a base plate, wherein the chair cover is movably connected to the base plate, at least two chair legs are disposed at a bottom of the base plate, and a leg pad is mounted at a bottom of each of the chair legs;

• the leg pad is sleeved on the chair leg, and a non-slip member is disposed in the leg pad;
• and
• an upper rotary table is mounted in the chair cover, a lower rotary table is mounted in the base plate, and the upper rotary table is rotatably connected to the lower rotary table via balls;
• wherein the non-slip member comprises:
• a suction cup fixed within the leg pad;
• and a movable friction pad slidably disposed at a bottom of the leg pad;
• wherein the movable friction pad comprises:
• an auxiliary plate rotatably connected therein;
• and an abutting spring connecting the auxiliary plate to the leg pad;
• and a snap ring disposed on an outer peripheral side of the movable friction pad and rotatably coupled to the leg pad.