Force sensor and method of application

The force sensor (1) for detecting a tensile and / or compressive force, in particular an inductive force sensor having the following features: a. an annular coil core (10) with an air gap (20) consisting of an elastic and magnetizable material, b. a coil (30) having a plurality of windings that near the air gap (20) of the coil core (10) is arranged, and c. at least two fastening points (12) on the annular core in which compressive or tension elements are fastened, so that a gap width of the air gap (20) by the pressure or tension elements is variable.