A switch operation device for switching between two or more speed change modes of a speed change mechanism by switching a position of a component for use in speed change included in the speed change mechanism, the switch operation device comprising: a main member that is movable between two positions in the switch operation device in an operating direction; a click spring that is for stopping the main member at one of the two positions; a switch spring that switches the position of the component in conjunction with movement of the main member between the two positions; a first holding member that is provided in the main member, and holds the click spring; and a second holding member that is provided in the main member, and holds the switch spring, wherein the main member is plate-like, the click spring is U-shaped, and has two opposing sides whose respective centers curve toward each other, the switch spring is arc-shaped, and has a center that curves outward so as to form a convex part having a curve, the first holding member and the second holding member are provided on one of main surfaces of the main member, the operating direction is a direction along the main surface, the first holding member holds the click spring so as to be held along the main surface, the second holding member holds the switch spring so as to be held along a planar surface perpendicular to the main surface, when viewed in a direction perpendicular to the main surface of the main member, the first holding member and the second holding member at least partially overlap with each other so as to form an overlap region. when viewed in the direction perpendicular to the main surface of the main member, the switch spring and the click spring at least partially overlap with each other so as to form an overlap region, in the overlap region between the switch spring and the click spring, the switch spring is positioned between the main member and the click spring in the direction perpendicular to the main surface of the main member, and in the overlap region between the switch spring and the click spring, the respective curved centers of the sides of the click spring are positioned inside of the curve of the convex part of the curved center of the switch spring a main member that is movable between two positions in the switch operation device in an operating direction; a click spring that is for stopping the main member at one of the two positions; a switch spring that switches the position of the component in conjunction with movement of the main member between the two positions; a first holding member that is provided in the main member, and holds the click spring; and a second holding member that is provided in the main member, and holds the switch spring, wherein the main member is plate-like, the click spring is U-shaped, and has two opposing sides whose respective centers curve toward each other, the switch spring is arc-shaped, and has a center that curves outward so as to form a convex part having a curve, the first holding member and the second holding member are provided on one of main surfaces of the main member, the operating direction is a direction along the main surface, the first holding member holds the click spring so as to be held along the main surface, the second holding member holds the switch spring so as to be held along a planar surface perpendicular to the main surface, when viewed in a direction perpendicular to the main surface of the main member, the first holding member and the second holding member at least partially overlap with each other so as to form an overlap region. when viewed in the direction perpendicular to the main surface of the main member, the switch spring and the click spring at least partially overlap with each other so as to form an overlap region, in the overlap region between the switch spring and the click spring, the switch spring is positioned between the main member and the click spring in the direction perpendicular to the main surface of the main member, and in the overlap region between the switch spring and the click spring, the respective curved centers of the sides of the click spring are positioned inside of the curve of the convex part of the curved center of the switch spring