| 摘要 |
The present invention relates to a flat type rail window device having an easily changeable structure. A window structure having a double rail structure can be simply achieved by pressing and inserting a window frame cover without rails into the upper part of a window frame rail and by settling a pair of double rollers installed in multiple roller supports into a rail protruding unit in the window frame rail. The roller supports are slid to be separated from the window frame rail. The window frame cover without rails is separated from the window frame rail and then a one-rail window frame cover is coupled to the window frame rail by being pressed and inserted into the window frame rail. One roller of a one-roller support can be simply settled into a rail of the one-rail window frame cover, so the structure of a window device having double rails can be changed into the structure of a window device having one rail. Therefore, the window frame cover without rails, the roller supports, the one-rail window frame cover, and the one-roller support are simply combined to and separated from the frame of the window frame and the frame of the window, so the structure of the installed window device can be changed from a double rail structure into a one-rail structure or vice versa. Hence, compatibility and workability are significantly improved. |
