Joint rod for vehicle wiper system

A linkage (100) for a vehicle wiper system, comprising a plate-shaped body (2) at at least one of opposite ends of the linkage and a ball socket (3)mounted in the body (2), wherein the body (2)has a through-hole (201) perpendicularly extending from an upper surface to a lower surface thereof, and the ball socket (3) is configured as a hollow structure and comprises: a cylindrical segment (34) having an outer dimension which allows it to be inserted through the through-hole (201) , and a flange (31) extending radially from one end of the cylindrical segment and having an outer dimension greater than the inner dimension of the through-hole (201), wherein a portion of an inner wall of the ball socket (3) is sphere-shaped so that a ball head of a second linkage used in the vehicle wiper system to be connected to said linkage can be received therein, and wherein the body of said linkage is connected to the ball socket (3) mechanically. With the configuration of the present invention, manufacturing process of the linkage is simplified and manufacturing cost is reduced.