Reaction force generator

A reaction force generator, comprising:

• a base member mounted directly or indirectly on a supporter supporting an operating member pivotably;
• a dome member protruding from the base member;
• and
• a top member provided on a protruding-side distal end of the dome member and configured to be pressed by the operating member toward the base member,
• the dome member being configured to be elastically deformed to produce a reaction force when the top member is pressed by the operating member,
• the dome member being configured such that a basal-end-side plane and a distal-end-side plane intersect each other at a position located on one of opposite sides of the dome member which is nearer to a pivot fulcrum of the operating member than another of the opposite sides, the basal-end-side plane comprising a line of intersection between the base member and the dome member adjacent to each other, the distal-end-side plane comprising a line of intersection between the dome member and the top member adjacent to each other.