Seat slide device

A seat slide device comprising:

• a lower guide rail adapted to be fixed onto a floor panel;
• an upper guide rail slidably fitted onto said lower guide rail and adapted to be firmly secured onto a bottom of a seat cushion;
• and
• rollers disposed between said upper and lower guide rails for sliding movement of said upper guide rail relative to said lower guide rail,
• wherein said lower guide rail includes an upwardly-opening channeled portion through which said lower guide rail is adapted to be fixed onto the floor panel, and flanged portions formed at upper ends of both side walls of said upwardly-opening channeled portion,
• wherein said upper guide rail includes a downwardly-opening channeled portion fitted onto said upwardly-opening channeled portion of said lower guide rail, a vertical portion extending vertically and longitudinally from an upper wall of said downwardly-opening channeled portion, and flanged portions formed at lower ends of both side walls of said downwardly-opening channeled portion, and wherein said flanged portions of said upper guide rail slidably engage the respective flanged-portions of said lower guide rail,
• wherein said vertical portion, said downwardly-opening channeled portion, and said flanged portions of said upper guide rail are integrally formed of a metal sheet, and
• wherein said vertical portion is formed by doubling over said metal sheet essentially at a center of said metal sheet, and a first vertical wall section of said vertical portion has at least one through-opening, and a second vertical wall section opposing said first vertical wall section has at least one flanged hole opposing said through-opening, and wherein said first and second vertical wall sections are secured to each other by caulking a flanged portion of the flanged hole onto a perimeter of said through-opening.

A seat slide device comprising:

• a lower guide rail adapted to be fixed onto a floor panel;
• an upper guide rail slidably fitted onto said lower guide rail and adapted to be secured onto a bottom of a seat cushion;
• and
• rollers disposed between said upper and lower guide rails for sliding movement of said upper guide rail relative to said lower guide rail,
• wherein said lower guide rail includes an upwardly-opening channeled portion through which said lower guide rail is adapted to be fixed onto the floor panel, and flanged portions formed at upper ends of both side walls of said upwardly-opening channeled portion,
• wherein said upper guide rail includes a downwardly-opening channeled portion fitted onto said upwardly-opening channeled portion of said lower guide rail, a vertical portion extending vertically and longitudinally from an upper wall of said downwardly-opening channeled portion, and flanged portions formed at lower ends of both side walls of said downwardly-opening channeled portion, and wherein said flanged portions of said upper guide rail slidably engage the respective flanged portions of said lower guide rail,
• wherein said vertical portion, said downwardly-opening channeled portion, and said flanged portions of said upper guide rail are integrally formed of a metal sheet,
• wherein said vertical portion is formed by doubling over said metal sheet essentially at a center of said metal sheet, and a first vertical wall section of said vertical portion has at least one through-opening and a second vertical wall section opposing said first vertical wall section has at least one flanged hole opposing said through-opening, and wherein said first and second vertical wall sections are secured to each other by caulking a flanged portion of the flanged hole onto a perimeter of said through-opening, and
• wherein said vertical portion has at least one cut-out at an upper end thereof.