Skirt brush mechanism with novel structure

A skirt brush mechanism, used for an automatic car washing machine, comprising:

• a skirt brush, vertically arranged for brushing side surfaces of a vehicle;
• a swing arm with one end connected to a top of the skirt brush and the other end connected to a fixed connection bracket, and capable of rotating horizontally on the fixed connection bracket;
• a reduction motor, arranged on the swing arm and in driving connection with the top of the skirt brush to drive the skirt brush to rotate for brushing;
• the fixed connection bracket, comprising a side wall configured to be fixed on the automatic car washing machine and suspended and a top wall connected to the side wall;
• wherein a cylindrical positioning block is arranged at the top wall, and a top wall of the cylindrical positioning block defines a mounting opening therein, and a rotating shaft connected to the swing arm is rotatably arranged in the mounting opening of the positioning block, a notch is defined in a peripheral wall of the cylindrical positioning block, a portion of the swing arm is located inside the notch, and the notch limits a rotation stroke of the swing arm;
• an oblique fixed arm, arranged on one side of the fixed connection bracket and used for mounting a stretching actuator;
• and
• the stretching actuator with one end rotatably connected to the oblique fixed arm and the other end rotatably connected to the swing arm to drive the swing arm to swing back and forth on the fixed connection bracket.