Enhanced ball joint with rotation sensor

A ball joint comprising a body of the joint wherein there is inserted a pin having a longitudinal axis and including a first end and a second end, said second end having a spherical shape, the second spherical end being rotatably arranged within a seat of said body, wherein a first spherical-cap-shaped element or shell is inserted within a seat having a corresponding shape of a second spherical-cap-shaped element or shell co-operating with a covering element so as to enclose the second spherical end of the pin within said body, the second spherical end of the pin, the first spherical-cap-shaped element or shell and second spherical-cap-shaped element or shell including reciprocal torsional coupling elements, such as to allow for a rotation of the pin about all axes of space in the body, the longitudinal axis of the pin being coincident with one of these axes, an angular displacement sensor being provided suitable for co-operating with a magnetic or mechanical drive element, integral with said second spherical-cap-shaped element or shell, in order to assess the rotation of the pin of the joint around the longitudinal axis of the pin itself,

• said reciprocal torsional coupling elements comprising pairs of grooves and ridges derived inside and on contact surfaces of the second spherical end of the pin, of the first spherical-cap-shaped element or shell, and of the second spherical-cap-shaped element or shell.