A sliding structure includes a guide rail formed on a first housing, a groove for the guide rail formed on a second housing, wherein the first housing and the second housing can engage each other and slide, an elastic body that expands and contracts in a longitudinal direction of the guide rail in parallel with the guide rail, and two pressing members that are located on ends of the elastic body and subjected to opposite pressing forces from the elastic body, are provided in the groove, at least one-by-one notch is formed on each elastic-body-disposed side of the guide rail and the groove for the guide rail such that the notches can be opposed to each other in a sliding action process, and the two pressing members can take such positions that the pressing members press respective different housings in opposite directions through the notches.