A connector includes a first connector and a second connector, wherein the first connector includes first contacts made of a conductive material, and a first movable part made of an insulating material, wherein the first contacts have respective first contact portions of a convex shape, and the first movable part is connected to the first contacts to be movable together with the first contact portions, wherein the second connector includes second contacts made of a conductive material, and a second movable part made of an insulating material, wherein the second contacts have respective second contact portions coming in contact with the first contact portions, and the second movable part is connected to the second contacts to be movable together with the second contact portions, and wherein the first contact portions and the second contact portions are configured to come in contact with each other, thereby establishing electrical coupling.