A connector includes a spring member attached to a first terminal and configured to press a second terminal toward the first terminal, the first terminal including a first opposing surface and a first contact portion facing the second terminal, the second terminal including a second opposing surface opposing the first opposing surface and a second contact portion facing the first terminal, one of the first opposing surface and the second opposing surface being provided with a projection projecting toward another of the first opposing surface and the second opposing surface, the another being provided with a projection accommodation portion of recess shape for accommodating the projection, the second terminal being inserted between the first opposing surface and the spring member.