Rail and roller of a window and door system and window operation apparatus for windows and doors using same

An upper rail unit of a window and door system, comprising:

• one or more upper linear rail units 1 which are installed on an upper end of a window casing, are opened downward so as to rectilinearly guide an upper door roller 3 that is installed on an upper end of a window frame, have guides 4 that are diagonally or rectilinearly formed at both sides thereof, and are rectilinearly formed to have a predetermined length;
• and
• an upper meandering rail unit 2 which diagonally or curvedly guides the upper door roller 3, which rectilinearly moves on the upper linear rail unit 1, so as to operate the window frame in a horizontal direction, is installed to be connected to one side end of the upper linear rail unit 1 so as to be connected to the upper linear rail unit 1 with the same cross section, and includes a plurality of protruding portions 13 that protrudes at a predetermined position of one side surface of any one of both the guides 4 so as to guide the upper door roller 3 toward the other side surface, and a groove portion 14 that is formed in an inner surface of the other guide 4 so that the upper door roller 3, which comes into rolling contact with the guide 4 and moves, is inserted into the groove portion 14 by the protruding portion 13 when the upper door roller 3 is guided toward the other side surface.

An upper rail unit of a window and door system, comprising:

• one or more linear rail units 1 which are installed on an upper end of a window casing, protrude downward so as to rectilinearly guide an upper door roller 3 that is installed on an upper end of a window frame, have guides 4 that are formed on both vertical side surfaces thereof so as to have contact points with the upper door roller and guide the upper door roller, and are rectilinearly formed to have a predetermined length;
• and
• an upper meandering rail unit 2 which is installed to be connected to the upper linear rail unit 1 so as to operate the window frame in a horizontal direction while diagonally or curvedly guiding the upper door roller 3 that comes into contact with both vertical side surfaces of the upper linear rail unit 1 and rectilinearly moves, has guides 4 that protrude downward and are formed on both vertical side surfaces so as to have contact points with the upper door roller 3 and guide the upper door roller 3, and is diagonally or curvedly extended.

An upper door roller unit of a window and door system, which is installed on an upper end of a window frame, and is installed in plural numbers, such that a plurality of upper door rollers 3 is spaced apart from each other in one side rectilinear line at a predetermined distance, one or more upper door rollers 3 are installed at the other side between the plurality of upper door rollers 3, and when the upper door roller 3 at the one side is guided toward the other side by a protruding portion 13, the upper door roller 3 at the other side is inserted into a groove portion 14.

A lower rail unit of a window and door system, comprising:

• one or more lower linear rail units 21 which are installed on a lower end of a window casing, are opened upward so as to rectilinearly guide a lower door roller 20 that is installed on a lower end of a window frame, have guides 23 that are diagonally or rectilinearly formed at both sides thereof, and are rectilinearly formed to have a predetermined length;
• and
• a lower meandering rail unit 22 which diagonally or curvedly guides the lower door roller 20, which rectilinearly moves on the lower linear rail unit 21, so as to operate the window frame in a horizontal direction, is installed to be connected to one side end of the lower linear rail unit 21 so as to be connected to the lower linear rail unit 21 with the same cross section, and includes a plurality of protruding portions 13 that protrudes at a predetermined position of one side surface of any one of both the guides 23 so as to guide the lower door roller 21 toward the other side surface, and a groove portion 14 that is formed in an inner surface of the other guide 23 so that the lower door roller 21, which comes into rolling contact with the guide 23 and moves, is inserted into the groove portion 14 by the protruding portion 13 when the lower door roller 21 is guided toward the other side surface.

A lower rail unit of a window and door system, comprising:

• one or more lower linear rail units 21 which are installed on a lower end of a window casing, protrude upward so as to rectilinearly guide a lower door roller 20, which is installed on a lower end of a window frame and has a vertical shaft 21a or a diagonal shaft 21b, while coming into rolling contact with the lower door roller 20, are rectilinearly formed to have a predetermined length, and have guides 23 that are formed to have a vertical surface or a diagonal surface formed at both sides thereof;
• and
• a lower meandering rail unit 22 which diagonally or curvedly guides the lower door roller 20, which rectilinearly moves on the lower linear rail unit 21, so as to operate a window frame in a horizontal direction, is installed to be connected to the lower linear rail unit 21 so as to be connected to the lower linear rail unit 21 with the same cross section, and has guides 23, which are diagonally or curvedly extended, and a rectilinear portion 22a that is rectilinearly formed to have a predetermined length and extended.