Electric supporting rod mechanism of automobile tail door

The utility model discloses an electric supporting rod mechanism of an automobile tail door. The electric supporting rod mechanism comprises a first shell and a second shell connected to the front end of the first shell. The interiors of the shell I and the shell II are connected with a screw rod, and one end of the screw rod is connected with a damper; the front end of the damper is sequentially connected with a motor reduction gearbox assembly and a PCB. The front end of the inner side wall of the first shell and one end of the outer surface of the second shell are provided with threads which are distributed at equal intervals, and the PCB is connected with an opening in the corresponding position of the first shell in a clamped mode through a protrusion at the end of the PCB. The damper structure is additionally arranged on the electric push rod, and the damper and the spring are matched for use, so that the problems that in the using process of an existing electric supporting rod of the automobile tail do