Rotary knob device

Abstract

The invention relates to a rotary device, comprising a base, a ring containing a locking spindle, a winding and a locking ring, such that the ring containing the locking spindle and the locking ring are provided with a first and second locking mechanism which are fitted together in such a way that the first and second locking mechanisms in combined form are constructed to limit the rotation of the rotary device relative to the ring containing the locking spindle in a single direction; The winding shaft and the rotary knob are provided with a first clamping mechanism and a second clamping mechanism that are coupled to each other, so that the first and second clamping mechanisms in the assembled state are structured to rotate the winding shaft synchronously with the rotary knob; The end surface of the retaining ring extends axially to form an anti-swing element, and this anti-swing element extends into the retaining ring of the retaining ring to ensure that the axes of the knob and the retaining ring are aligned when the knob is rotated relative to the retaining ring, thus preventing wobbling from occurring when the knob is rotated relative to the retaining ring.