| 摘要 |
PURPOSE: A coupling structure for an upper rail of a drive unit is provided to reduce maintenance time by easily detaching an upper rail from a reinforcing plate. CONSTITUTION: A coupling structure for an upper rail of a drive unit comprises an upper guide frame, a first reinforcing plate, multiple coupling guide pieces, and a second reinforcing plate. The upper guide frame is formed on the top of a door frame(100). The first reinforcing plate is coupled to one side of the upper guide frame in which an opening and closing door(20) is located. The coupling guide pieces are coupled to the other side of the upper guide frame and have insertion grooves. An upper rail(10) of a drive unit is detachably coupled to the second reinforcing plate. The second reinforcing plate is coupled to the insertion groove of the coupling guide pieces. |
