Module with force hysteresis

摘要

A spring element (20) is fixed on a rotary element (14) mounted rotatable in a housing and its free end slides by a friction element (18) on a locally fixed friction surface (22). The reaction force of the spring element in all angular positions of the rotary element relative to the housing (12) applies a resetting movement onto the rotary element about the rotary axis. the friction surface is arranged curved wound the rotary axis with a changing radius.