| 摘要 |
A double rail structure of a roll type insect screen is provided to improve the operability of a double rail by returning an internal rail to the original location with strong elastic force of a leaf spring after moving to the inside of an external rail with pulling force when operating an insect screen vertically. A double rail structure of a roll type insect screen includes a side cover(10) inserted and coupled to two sides of a case having a built-in a shroud wound with an insect screen, an external rail(14) extended to the lower part of the side cover to the appointed length, an internal rail inserted and mounted to the inside of the external rail to guide the vertical movement of the insect screen, and a plurality of leaf springs(30) formed on the bottom of the external rail and inserted to the inside of the internal rail through a plurality of holes formed on the bottom of the internal rail to support the internal rail elastically when the internal rail is inserted to the inside of the external rail. |
