Windscreen wiper device with separable hinged joint

A windscreen wiper device, comprising one component forming a windscreen wiper arm articulated to another component forming a drive head, a hinge pin having a longitudinal axis and at least one cylindrical hinge pin section attached to one of the two components, the at least one cylindrical hinge pin section being received in a complementary bearing section formed in the component to which the hinge pin is not attached which component bearing section has a concave semi-cylindrical surface within which the cylindrical hinge pin section is mounted in a direction perpendicular to said hinge pin cylindrical section longitudinal axis, said bearing section also having two parallel plane guideway surfaces joined with said concave semi-cylindrical surface and a retention lug formed on one of said plane guideway surfaces, extending transversely therefrom in a direction toward said other plane guideway surface to establish a width therebetween;

• retention means for preventing the detachment of the section of the hinge pin from the bearing section, wherein the retention means has an elongated retention rod having a lengthwise axis and a dimension greater than the width established between said lug and said other plane guideway surface, said rod joined axially to the cylindrical hinge pin section, wherein the retention lug has a concave semi-cylindrical surface surface that complements said cylindrical hinge pin section to provide a complement to the bearing section, the retention rod having a flat surface which allows the rod to be received in the slot to mount the cylindrical section of the hinge pin in the bearing section only for a predetermined relative angular position of the two components.