| 摘要 |
A sliding door having a two-step slide structure is provided to increase reinforcing force and improve reliability of the product by supporting both surfaces of the first step door frame by the second step door frame. A sliding door having a two-step slide structure is composed of a rail(11) formed on the upper part of a door frame(10); first and second step door frames(20,30) slidingly moved at a pocket frame(40) fixed in the door frame to be withdrawn to close/open the desired space; a first sliding part(50) formed to allow the second step door frame to be overlapped at the front and rear surfaces, corresponded to a rail(52) formed at the door frame to move the second step door to be slidingly moved, and combined on the upper part of the second step door frame; and a second sliding part(60) combined at the upper side of the first step door frame and slidingly combined at the lower side of the first sliding part to allow the first step door frame to be slidingly moved. The first sliding part is installed with a roller(51) at the upper side, and the second sliding part is combined with a roller(61) corresponded to the rail of the first sliding part.
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