Abstract: A sliding door device for a vehicle includes a door, a lower arm including a first end portion connected to an internal side of the door and a second end portion provided to slide along a vehicle body rail provided on the vehicle body, a linear slider rotatably connected to the second end portion of the lower arm and provided to slide along a linear rail provided on the vehicle body, a slider assembly provided between the lower arm and the internal side of the door, and allowing the door to slide with respect to the first end portion of the lower arm, an arm latch located between the lower arm and the linear slider and fixing and releasing the sliding of the second end portion of the lower arm, and a door latch located between the lower arm and the slider assembly and allowing the slider assembly to be slidably fixed or released.

Abstract: The present disclosure relates to a vehicle door coupling device, and more specifically, to a vehicle door coupling device for mechanically coupling together a first member having a first hole and a second member having a second hole at a position corresponding to the first hole.

Abstract: A sliding door device for a vehicle may include a sliding door opening/closing a door opening formed in a vehicle body, a door rail mounted on the sliding door, a vehicle body rail mounted on the vehicle body, a central support structure for movably supporting the sliding door, a hook releasably locking the central support structure to the door rail, and a lower support structure for movably supporting a lower portion of the sliding door. The central support structure includes a central slider. The lower support structure includes a lower slider, a gear device, a link mechanism, a chain, and a chain tensioner.

Abstract: A sliding device for a vehicle door includes a lower rail extending straightly and mounted on an exterior of a vehicle. A lower slider is coupled to the lower rail to move along the lower rail. A gear device is mounted on the lower slider to move with the lower slider. A linkage has one end connected to the gear device to transmit a torque and another end rotatably engaged with a lower portion of the vehicle door.

Abstract: A locking device for a vehicle sliding door comprises a rail mounted on the vehicle sliding door; a central support structure coupled to the rail and mounted on the vehicle body and configured to connect the vehicle sliding door to the vehicle body and to allow the vehicle sliding door to pivot and slide; and a hook disposed on the central support structure and configured to lock the central support structure with respect to the rail according to a movement of the vehicle sliding door.

Abstract: A sliding door device for a vehicle may include a sliding door opening/closing a door opening formed in a vehicle body, a door rail mounted on the sliding door, a vehicle body rail mounted on the vehicle body, a central support structure for movably supporting the sliding door, a hook releasably locking the central support structure to the door rail, and a lower support structure for movably supporting a lower portion of the sliding door. The central support structure includes a central slider. The lower support structure includes a lower slider, a gear device, a link mechanism, a chain, and a chain tensioner.

Abstract: A rear door device for a vehicle may include a rear door, an upper rail mounted to the rear door in a width direction, an upper slider inserted in the upper rail to support the upper rail, a lower rail mounted to a vehicle body and formed with a curved portion, a lower slider inserted in the lower rail and movable along the lower rail, an upper support structure having one end connected to the upper slider and the other end mounted to the vehicle body for supporting the upper slider, and a connection structure for connecting the lower slider to the upper rail. The rear door device permits the rear door to be opened or closed by sliding it forward or backward in the length direction of the vehicle.

Abstract: A rear door device for a vehicle may include a rear door, an upper rail mounted to the rear door in a width direction, an upper slider inserted in the upper rail to support the upper rail, a lower rail mounted to a vehicle body and formed with a curved portion, a lower slider inserted in the lower rail and movable along the lower rail, an upper support structure having one end connected to the upper slider and the other end mounted to the vehicle body for supporting the upper slider, and a connection structure for connecting the lower slider to the upper rail. The rear door device permits the rear door to be opened or closed by sliding it forward or backward in the length direction of the vehicle.

Abstract: Disclosed is a rail locking device. The rail locking device may include a movable rail, a slider that is embedded in the rail to move in a sliding motion along with movement of the rail, a swing arm that supports the slider to move in a swing motion, and a locking member that is attached to the slider to lock the rail to the slider or unlock the rail from the slider. Accordingly, it is possible to easily lock and unlock the rail, and it is possible to open or close a vehicle door in a longitudinal direction of a vehicle when the vehicle door is provided.

Abstract: A device for checking the door of a vehicle that includes a fixing member that is attached to a vehicle body; a checker arm, an edge of which is hinge combined with the fixing member to be rotated and is located between a door and the vehicle body; and a door checker that is attached to the door to maintain the door in a stop-state at a position on a moving path of the door while sliding in a length direction of the checker arm by accommodating the checker arm therein, wherein the door checker includes: a housing in which an accommodation space is formed; a transformation element that is accommodated in the housing and transforms a straight line motion of the checker arm into a rotational motion by being engaged with the checker arm; a rotation element that is disposed within the housing, rotates by being engaged with the transformation element, and includes a friction plate; a fixing element that is fixedly installed in the housing and restricts the rotation member by attracting the friction plate of the rot

Abstract: An invisible sliding door link structure includes a door bracket disposed at an inner surface of a door sliding part of a vehicle body to open or close, a body bracket provided in an invisible slider to slide the door, a main arm with one end connected to one side of the door bracket and the other end connected to one side of the body bracket, a first link having one end rotatably connected to the other side of the body bracket, a second link having one end rotatably connected to the other end of the first link and the other end connected to the other side of the door bracket, and a third link having one end rotatably connected to one side of the main arm and the other end connected to a hinge point at which the first and second links are connected to each other.

Abstract: An invisible sliding door link structure includes a door bracket disposed at an inner surface of a door sliding part of a vehicle body to open or close, a body bracket provided in an invisible slider to slide the door, a main arm with one end connected to one side of the door bracket and the other end connected to one side of the body bracket, a first link having one end rotatably connected to the other side of the body bracket, a second link having one end rotatably connected to the other end of the first link and the other end connected to the other side of the door bracket, and a third link having one end rotatably connected to one side of the main arm and the other end connected to a hinge point at which the first and second links are connected to each other.

Abstract: A device for checking the door of a vehicle that includes a fixing member that is attached to a vehicle body; a checker arm, an edge of which is hinge combined with the fixing member to be rotated and is located between a door and the vehicle body; and a door checker that is attached to the door to maintain the door in a stop-state at a position on a moving path of the door while sliding in a length direction of the checker arm by accommodating the checker arm therein, wherein the door checker includes: a housing in which an accommodation space is formed; a transformation element that is accommodated in the housing and transforms a straight line motion of the checker arm into a rotational motion by being engaged with the checker arm; a rotation element that is disposed within the housing, rotates by being engaged with the transformation element, and includes a friction plate; a fixing element that is fixedly installed in the housing and restricts the rotation member by attracting the friction plate of the rot