Abstract: An opening/closing device for a vehicle sliding-window panel, includes a sliding-window panel opening and closing an opening part provided in a vehicle body, a guide rail fixed to the vehicle body to support the sliding-window panel to slide, a carrier plate coupled with the sliding-window panel and fitted to the guide rail to slide, and a slide driving mechanism that operates the sliding-window panel coupled with the carrier plate to open and close by driving a motor. The carrier plate has a fitting groove which is open upward and extended in an opening/closing direction of the sliding-window panel and to which a lower portion of the sliding-window panel is fitted, and an engaging portion that engages with an engaged portion provided on the lower portion of the sliding-window panel fitted to the fitting groove to fix the lower portion of the sliding-window panel to the fitting groove.

Abstract: An opening/closing device for a vehicle sliding-window panel, includes a sliding-window panel opening and closing an opening part provided in a vehicle body, upper and lower guide rails to support the sliding-window panel to slide, and a slide driving mechanism fixed to one guide rail either the upper or lower guide rail. The slide driving mechanism includes a motor, a lead screw rotated by driving the motor, and a screw nut which is screwed with the lead screw to linearly move in a longitudinal direction of the one guide rail by rotation of the lead screw and is coupled with the sliding-window panel to operate the sliding-window panel to open and close by the linear movement. The one guide rail is integrally formed with a first and second supporting portions which rotatably support both end portions of the lead screw respectively.