A structure includes a rail mounted on a vehicle body, a rail roller device connected to the rail, a slider mounted on the rail roller device, a movement support device having a first side fixed to a door and a second side connected to the slider, and a catch-pawl locking device including catches and pawls locked to or unlocked from one another while rotating. The catches and the pawls include a first catch and a first pawl for restricting a movement of the rail roller device in a first direction when the first catch and the first pawl are locked to each other, and a second catch and a second pawl for restricting a movement of the movement support device in a second direction perpendicular to the first direction when the second catch and the second pawl are locked.

A structure for preventing a sliding door from swaying includes a rail mounted in a first direction that is a longitudinal direction of a vehicle body, a rail roller unit rollably connected to the rail, a sliding module configured to apply driving power in the first direction to the rail roller unit through a cable, a slider mounted on the rail roller unit, a movement support unit configured to support the sliding door, wherein a first side of the movement support unit is fixed to the sliding door, and a second side of the movement support unit is rollably connected to the slider, and a spindle assembly configured to operate a spindle between the sliding door and the rail to move the sliding door in a second direction perpendicular to the first direction.

The invention relates to a drive device for driving an element, having the following: a toothed belt drive with a toothed belt, a frame element which forms two opposite connection plates and a connection wall that connects the two connection plates together, at least three elongated force driving elements which are secured to the toothed belt and are aligned parallel to the width (B) of the toothed belt and parallel to one another and which are arranged within the frame element, wherein a central force driving element is rotationally fixed to the two connection plates, and the end sections of each adjacent outer force driving element extend through curved elongated holes of the connection plate, whereby the outer force driving element can be pivoted and the end faces of the outer force driving elements have cylindrical projections, which are designed as axle stubs and each of which has a roller, outside of one of the connection plates, a toothed disc with tooth recesses for catching teeth of the toothed belt and force driving element recesses for catching the force driving elements, a non-linear guide path, at least some sections of which run parallel to the extension of the toothed belt and in which the rollers arranged on the outer force driving elements are guided, and a drive means which is connected to the frame element and is used to connect to the element to be driven.

A dual lower rail structure for opposite sliding doors is provided. The dual lower rail structure includes a first lower rail mounted in a longitudinal direction at a lower side of a vehicle body, a second lower rail mounted in a longitudinal direction on a vehicle body at one side of the first lower rail, a first lower rail roller unit rollably connected to the first lower rail, a second lower rail roller unit having one end rollably connected to the second lower rail, and the other end connected to a sliding door, and a lower rail swing arm rotatably connected to the first lower rail roller unit and the sliding door.

A locking structure for a rectilinear center rail is provided. The locking structure includes a rectilinear center rail mounted on a sliding door, a center roller unit rollably connected to the center rail, and a center swing arm rotatably connected to the center roller unit and a vehicle body. The center roller unit includes a first lever and a second lever that are configured to rotate about rotation axes formed in a width direction of the center rail. The locking structure is configured to switch between a first posture in which the first lever is configured to be caught by a catching portion formed on the center rail, rotated, and then locked with the second lever and a second posture in which the second lever is configured to be caught by a catching portion formed on the center swing arm, rotated, and then locked with the first lever.

A cover device includes a cover that is displaced between a covering position where an upper side of a striker is covered, and an exposure position where the striker is exposed upward, and an open-close mechanism that displaces the cover to the covering position when a slide door performs an opening operation, and displaces the cover to the exposure position when the slide door performs a closing operation.

A latch member for full opening includes a latch member for full opening that operates a latch claw into an engagement position or a non-engagement position with a striker. The latch member for full opening is configured of a first member on a sliding door side of a turning shaft, and is configured of a second member operated by the first member on a vehicle body side of the turning shaft.

An embodiment apparatus for preventing a sliding door from swaying includes a rail on a vehicle body, an arm bracket attached to a door panel of a door, a slider slidable in a front-rear direction on the rail, a first arm having first and second sides hingedly coupled to the arm bracket and to a first side of the slider, respectively, a second arm having first and second sides hingedly coupled to the arm bracket and to a second side of the slider, respectively, and a latch part on the slider for adjusting rotations of the first and second arms, wherein the first and second arms push the door outward while being spread and deployed during a first stage operation, and the slider slides on the rail to fully open the door during a second stage operation.

An apparatus for a vehicle includes a door rail configured to be installed on a door panel of a door, a vehicle body rail configured to be coupled to a vehicle body so as to be opposite to the door rail, a vehicle body rail slider coupled to one surface of the vehicle body rail so as to be slidable in a front-rear direction along the vehicle body rail, a door rail slider coupled to the door rail so as to be slidable in the front-rear direction along the door rail, a pulley rotatable in conjunction with a movement of the vehicle body rail slider, a speed reducer directly connected to the pulley, and a second arm hingedly coupled to the speed reducer and configured to move the door rail slider.

A door roller includes a carriage member comprising a plurality of bores, and a plurality of roller assemblies connected to the carriage member, each roller assembly of the plurality of roller assemblies including a pivot bearing rotatably disposed within a bore of the plurality of bores and a pair of rollers coupled to the pivot bearing. Each wheel assembly is configured to pivot relative to the carriage member.