| 摘要 |
The present invention relates to a hidden rail type window and door system, wherein a rail structure is provided separately at a lower structure which is provided at the installation surface of a window and door frame, and thus a rail can be very easily replaced, maintained and repaired and not be seen from the outside in case of the opening and closing of a window or door. In other words, the present invention provides a hidden rail type window and door system having a novel structure, wherein a rail structure is separately provided at a lower structure which is provided at the installation surface of a window and door frame, thereby allowing a rail to be very easily replaced, maintained and repaired and preventing the rail from being seen from the outside in case of the opening and closing of a sliding window or a sliding door, while at the same time, the upper surface of the hidden rail is made to be flat, thereby providing a beautiful appearance and facilitating cleaning, and a sealing structure with respect to drafts and noise is improved by a multistage shielding structure. |
