Movable unit, switchover switch, and production method for the switchover switch

A movable unit to be provided in an interior of a switchover switch that includes a casing and a slider configured to slide in an upward-downward direction in response to the slider being depressed, the movable unit comprising:

• a cam configured to be rotationally moved downward by a tip end portion of the cam being depressed in response to the slider being depressed;
• a retaining member configured to retain a movable contact member and support a rotational movement pivotal portion of a base end portion of the cam so as to be movable rotationally and slidable in the upward-downward direction;
• and
• a biasing member interposed between the cam and the retaining member and configured to bias the cam upward, wherein
• the retaining member performs a snap-action movement by action of a biasing force applied from the biasing member upon the cam being rotationally moved downward, thereby performing switching of a contact target of the movable contact member from a first stationary contact to a second stationary contact, and
• by the base end portion being depressed in a state in which the cam is opened upward, the cam is locked in a state in which the cam is rotationally moved downward and the rotational movement pivotal portion slides downward.