Abstract: A window includes a window frame and a screen mounting assembly. The window frame is formed with two rail slots. The screen mounting assembly is adapted to be connected to a window screen and includes a roller unit, a sliding unit and an interconnecting unit. The roller unit includes a roller seat. The sliding unit is slidable along the rail slots and defines an engaging groove. The interconnecting unit is operable between a disengaging state where the interconnecting unit is connected to the roller seat, and an engaging state where the interconnecting unit is separated from the roller seat and inserted into the engaging groove so as to engage the sliding unit, such that movement of the sliding unit along the rail slots results in winding and unwinding of the window screen.

Abstract: A window includes a window frame and a screen mounting assembly. The window frame is formed with two rail slots. The screen mounting assembly is adapted to be connected to a window screen and includes a roller unit, a sliding unit and an interconnecting unit. The roller unit includes a roller seat. The sliding unit is slidable along the rail slots and defines an engaging groove. The interconnecting unit is operable between a disengaging state where the interconnecting unit is connected to the roller seat, and an engaging state where the interconnecting unit is separated from the roller seat and inserted into the engaging groove so as to engage the sliding unit, such that movement of the sliding unit along the rail slots results in winding and unwinding of the window screen.

Abstract: The present disclosure illustrates a sheet object cover which comprises a cover and a three dimensional structure. The cover comprises a first plate and a second plate. The three dimensional structure comprises a top plate and a bottom plate. The first opening places a sheet object. When the cover is in the closing status, the top plate and the bottom plate are folded to be accommodated inside the cover, so that the sheet object can be accommodated inside the cover. When the cover is in the opening status, the top plate and the bottom plate are pulled by the first plate and the second plate to enable the three dimensional structure to stand on the cover, so that the sheet object can stand on the three dimensional structure.