Back side door C post water -proof component

The utility model discloses a back side door C post water -proof component, triangle plaque and glass encapsulation strip, rear side door inner panel and rear side are equipped with the window frame reinforcing plate outdoors between the board, the window frame reinforcing plate with rear side door inner panel fixed connection, glass assembly guide rail is located the front side of window frame reinforcing plate and with window frame reinforcing plate fixed connection, embedded fixed the locating of glass encapsulation strip in the guide way of glass assembly guide rail, the triangle plaque isfixed to be located on the window frame reinforcing plate, the anterior internal surface of triangle plaque with the lateral wall of glass assembly guide rail offsets, the first limit of triangle plaque and rear side be the preceding side seals and docking of board outdoors, the second limit and the outwardly directed outside limit seals and docking of glass encapsulation strip of triangle plaque, adhesive tape seals and