Split-type glass guide rail structure for car door and fixing method thereof

The invention discloses a split-type glass guide rail structure for a car door and a fixing method thereof. The split-type glass guide rail structure comprises an upper glass guide groove and a back guide rail, wherein an inserting groove is formed in the upper glass guide groove, and the top end of the back guide rail penetrates through the inserting groove and is matched with a metal plate hole in a metal plate of the car door. The fixing method of the split-type glass guide rail structure for the car door includes the steps: firstly, installing four-corner window glass on the back guide rail; installing the back guide rail and the four-corner window glass on the upper glass guide groove, wherein the back guide rail and the four-corner window glass are installed together; finally, clamping the back guide rail, the four-corner window glass and the upper glass guide groove together on the metal plate of the car door. The split-type structure of the upper glass guide groove, the back guide rail and the four-corner window glass of the car door is easy and convenient to assemble and clamp, installing quality is convenient to control, good appearance is guaranteed, parts are manufactured in a separated mode, precision is convenient to control, a rejection rate of finished products is reduced, and cost is low.