Electric tricycle door locking device

The utility model provides an electro-tricycle door locking device which is arranged on a seat cask of an electro-tricycle, a door plate is arranged on the seat cask in a hinged mode, and the electro-tricycle door locking device comprises a shell, a torsional spring, a positioning rod, a shifting rod and a baffle, the shell is fixed on one side of the seat cask; one end of the positioning rod is fixedly connected with the inner side face of the shell, and the other end sequentially penetrates through the baffle and the shifting rod and is fixedly connected with the other inner side face of the shell; the deflector rod is rotatably arranged on the positioning rod; the torsion spring is sleeved on the positioning rod; one end of the torsion spring is fixedly connected with the shell, and the other end is fixedly connected with the deflector rod; a U-shaped opening is formed in the side, close to the door plate, of the shell. The deflector rod comprises a locking plate, a locking plate and a grip which are integ