Inductive Position Sensor with Improved Magnetic Shield and Plunger Core Design

An inductive position sensor, comprising:

• a first part with a cylindrical coil winding (14) having a longitudinal direction, a second part with a soft magnetic plunger core (20) arranged movable with respect to the cylindrical coil winding (14) in the longitudinal direction and said soft magnetic plunger core having a longitudinal extent parallel to the longitudinal direction of the cylindrical coil winding, and wherein the first part at least partly surrounds the soft magnetic plunger core, characterized in that a thin walled soft magnetic tubular shield (11a) surrounds the cylindrical coil winding (14), wherein said thin walled soft magnetic shield (11a) is shaped to circular cross-section form with an longitudinal abutting seam (11c) running in parallel to the longitudinal direction of the cylindrical coil winding, and shaped to the circular cross-section form from a flat strip cut to a rectangle and wherein the thin walled soft magnetic shield (11a) has a cylindrical cross section with one gable end closed by a shield hole washer element (11b), and wherein both the soft magnetic tubular shield (11a) and the shield hole washer element (11b) are made from flat strips of electrical steel.