Switch device

A switch device comprising:

• a case serving as a base portion;
• a cylindrical portion protruding from the case;
• and
• a knob serving as an operation member attached to a fitting portion provided in the cylindrical portion, wherein
• the knob rotates around a rotary shaft member provided in the cylindrical portion,
• the knob includes an operation portion at least capable of being pulled up, the operation portion being provided on one side of the knob, the one side being defined using the rotary shaft member as a boundary, and an abutment portion located on another side of the knob, the another side being defined using the rotary shaft member as the boundary,
• the case includes a stopper portion configured to contact the abutment portion when the operation portion is pulled up,
• the knob has a bottom portion on the one side of the knob and an extending portion extending to the another side and below the bottom portion in a state in which the knob is not rotated about the rotary shaft member,
• the abutment portion is provided in the extending portion, and
• the extending portion has an R-shape in a side view.