A switch structure includes a lever operable by a user, a body coupled to the lever, a support formed in the lever, a pusher supported by the support, a detent surface formed in the body to produce a click when the lever is operated, and a spring that pushes the pusher against the detent surface. The pusher includes two slide surfaces, which slide on the lever and the body, and a groove, which draws grease from one of the two slide surfaces where the grease is applied to another one of the two slide surfaces.