ASSEMBLY STRUCTURE OF WIPER DRIVING ARM AND ACCESSORY PIECE

This disclosure is an assembly structure of a windshield wiper. An accessory piece includes a main body and a head portion. A stepped surface is defined between the head portion and the main body. The stepped surface includes a front latching segment and two arc segments. The main body includes an elastic arm and a latching block located on the top thereof. The latching block includes a stepped portion. A wiper driving arm includes an arm body and a cover. The cover includes a top surface and two side walls. The top surface abuts against the front latching segment, and the two side walls abut against the two arc segments respectively. The latching block is embedded in the limiting slot on the top surface. One side of the limiting slot is located in the stepped portion and the latching block is non-protruding from the top surface.