Control knob to position encoder interface with self-aligning rotary guide

摘要

A control panel is provided comprising a circuit board, a rotary position encoder mounted to the circuit board and having a rotating shaft with a first rotation axis, and a cover having an aperture. A knob is rotationally received in the aperture with a second rotation axis. The knob has an open interior space and a radial guiding rib projecting into the interior space. A guide part rotates with the rotating shaft and has a guide groove slidably engaging the radial guiding rib whereby the radial guiding rib drives rotation of the rotating shaft in response to manual rotation of the knob. The radial guiding rib shifts in position within the guide groove in response to misalignment between the first rotation axis and the second rotation axis.