Rotary knob device

A rotary knob device, comprising:

• a seat configured to be installed on a touch function display panel, the seat including an external conductive component and defining a thickness direction;
• an operation cover pivotally connected on the seat, wherein the operation cover is configured to rotate relative to the seat and move along the thickness direction between a trigger position and a release position;
• an annular circuit board disposed in the seat, wherein the annular circuit board has a plurality of contact points arranged in an annular configuration;
• a braking ring fixed on the annular circuit board and connected to the operation cover, wherein the braking ring is configured to be driven by the operation cover to rotate relative to the seat;
• a resistance component fixed on the seat and abutting against the braking ring;
• a plurality of elastic components disposed on at least one of the braking ring or the annular circuit board;
• a plurality of conductive trigger components fixed on a side of the operation cover facing the seat, wherein the conductive trigger components respectively correspond in position to the elastic components;
• a plurality of reset conductive components disposed on the braking ring, wherein the reset conductive components respectively correspond in position to the conductive trigger components, and each of the reset conductive components is spaced apart from at least one of a corresponding one of the conductive trigger components or the external conductive component;
• wherein, when the operation cover is at the trigger position, the conductive trigger components compress the elastic components to generate an elastic force, and the conductive trigger components respectively push against the reset conductive components to electrically couple with the external conductive component, so that a charge from the operation cover is configured to be conducted to the external conductive component;
• wherein, when the operation cover is at the release position, the elastic components release the elastic force to push against the conductive trigger components, so as to separate the reset conductive components.