Abstract: An opening and closing device includes a roller unit (10) which movably contacts a rail (203b) of a support frame (203), a pane frame support unit (20) which is provided in a pane frame (205) and moves away from and approaches the roller unit, a handle (5), which is rotatably provided on a leading end of the pane frame wherein rotation of the handle moves the roller unit relative to the pane frame support unit which causes the pane frame support unit and the pane frame to move vertically relative to the roller unit.

Abstract: An opening and closing device for lift-up sliding doors and windows is disclosed. The opening and closing device includes a roller unit (10), which removably contacts a rail (203b) of a support frame (203), a pane frame support unit (20), which is provided in a pane frame (205) and moves away from and approaches the roller unit, a handle (5), which is rotatably provided on a leading end of the pane frame, and a lift operating unit (7), which moves the pane frame support unit with respect to the roller unit. The lift operating unit (7) includes a lift operating bar (40), which is movably provided in the leading end of the pane frame and is coupled to the roller unit, and a lift operating gear unit (60). The lift operating gear unit has a drive gear (61), which is coupled to the handle, a driven gear (65), which increases the rotating force of the drive gear, and a rack gear (67), which engages with the driven gear.