Roof rack for vehicle

A roof rack for a vehicle, comprising:

• a roof rail that is injection molded;
• a pad on which the roof rail is mounted and that contacts the roof rail;
• and
• a mounting coupling member that is insert-injected to the roof rail and protrudes from a lower portion of the roof rail,
• wherein the mounting coupling member comprises:
• a screw that protrudes from a lower portion of the roof rail;
• an insert fixing part that is connected to the screw and is insert-injected to the roof rail during injection molding of the roof rail;
• and
• an extended connector with an enlarged cross section provided at a boundary between the screw and the insert fixing part, and
• wherein the roof rail comprises:
• a plurality of ribs having different sizes from one another;
• and
• a variable base whose thickness varies in proportion to the width or length of each of the plurality of ribs,
• wherein a longitudinal end of the roof rail has a curved shape by injection molding,
• wherein the plurality of ribs include a first rib and a second rib having different sizes from each other,
• wherein the variable base has a structure in which the thickness varies in proportion to the size of the first rib and the second rib, thereby preventing a sink of an appearance of the roof rail from occurring,
• wherein the pad comprises:
• a plate-shaped pad body that provides a mounting surface on which the roof rail is mounted;
• and
• a plurality of protrusions that protrude upward from both ends of the plate-shaped pad body by a predetermined length,
• wherein the insert fixing part, the extended connector, and the screw protrude downward through the plate-shaped pad body,
• wherein a width of the first rib is 1.0 to 1.5 mm, and a width of the second rib is 2.0 to 3.0 mm,
• wherein the variable base includes a first base corresponding to the first rib and a second base corresponding to the second rib,
• wherein a thickness of the first base is 3.5 to 4.5 mm and a thickness of the second base is 4.0 to 5.5 mm,
• wherein the roof rail is molded using polyimide or a plastic material including polyimide, wherein the pad is molded using a material different from that of the roof rail,
• wherein the plurality of protrusions face the roof rail at both sides of the roof rail and have a shape protruding upwards obliquely from the plate-shaped pad body,
• wherein the plurality of protrusions face both lower ends of the roof rail and protrude obliquely upward by a predetermined gap, and
• wherein the predetermined gap is formed between the side surfaces of each of the plurality of protrusions and the both lower ends of the roof rail.