Position sensor with directing mechanism

A position sensor for sensing a position of a moving part, comprising:

• a guide that is rotationally orientable in a body about a first axis XX′ of rotation, and a plunger sliding without rotation in the guide along the axis XX′;
• a locator that prevents rotation of the guide in the body about the axis of rotation, in a given angular position, wherein the locator is fixed nonremovably in the body and in that it possesses either several tabs spaced regularly about the guide and configured to fit into one position groove to immobilize the guide or several position grooves in which one tab can fit to immobilize the guide;
• wherein the guide, which is of circular cylindrical shape, possesses an upper part and a lower part, the upper part having a smaller diameter than the lower part which fits inside a first recess in the body of the sensor, the first recess, which is of circular cylindrical shape and coaxial with the first axis XX′ of rotation, being open in one direction at one end of the body, situated towards a free end of the plunger, and in the other direction to a second recess, coaxial with the first recess and of a same shape, with a diameter slightly smaller than that of the first recess, thus creating a circular shoulder on which a washer sits, the second recess being open to a third recess through which a lower part of the plunger can pass as it slides inside the body, and the lower part of the guide being applied, by a base surface perpendicular to its axis of revolution, against the washer, keeping the guide in a longitudinal position on the first axis XX′ in the body of the sensor.