A connector for connecting an electric cable to an electric device having an insertion opening (Ma) provided for electric cable connection, the connector comprising: a metal terminal part on which an insulating cover and conductive wires are pressure-contacted at an end of the electric cable, the electric cable being formed by covering the conductive wires by the insulating cover except for an end of the conductive wires, the end of the conductive wires being exposed; and a housing for accommodating a pressure-contact part of the end of the electric cable and the metal terminal part, wherein: the housing includes an electric cable insertion hole allowing the electric cable to be inserted thereinto, the housing also includes a filling space in communication with the electric cable insertion hole; the filling space is located in positional correspondence with the pressure-contact part, the electric cable insertion hole has a width such that an outer circumferential surface of the insulating cover of the electric cable contacts with an inner wall thereof, and the filling space is filled with a filler such that the filler covers the pressure-contact part, characterized in that the pressure-contact part is formed by pressure-contacting and caulking the insulating cover using an insulation barrel of the metal terminal part, and by pressure-contacting and caulking an exposed area of the conductive wires using a wire barrel of the metal terminal part, the insulation barrel which pressure-contacts on the insulating cover is wider than the electric cable in a width direction, the electric cable extending in a longitudinal direction perpendicular to the width direction, wherein the filling space has a width in the width direction larger than a width of each of the electric cable insertion hole in the width direction, and substantially identical to a width of the insulation barrel in the width direction, a plurality of steps are formed between the electric cable insertion hole and the filling space, each of the steps corresponding to a difference between a width of the electric cable and the width of the insulation barrel. a metal terminal part on which an insulating cover and conductive wires are pressure-contacted at an end of the electric cable, the electric cable being formed by covering the conductive wires by the insulating cover except for an end of the conductive wires, the end of the conductive wires being exposed; and a housing for accommodating a pressure-contact part of the end of the electric cable and the metal terminal part, wherein: the housing includes an electric cable insertion hole allowing the electric cable to be inserted thereinto, the housing also includes a filling space in communication with the electric cable insertion hole; the filling space is located in positional correspondence with the pressure-contact part, the electric cable insertion hole has a width such that an outer circumferential surface of the insulating cover of the electric cable contacts with an inner wall thereof, and the filling space is filled with a filler such that the filler covers the pressure-contact part, characterized in that the pressure-contact part is formed by pressure-contacting and caulking the insulating cover using an insulation barrel of the metal terminal part, and by pressure-contacting and caulking an exposed area of the conductive wires using a wire barrel of the metal terminal part, the housing includes an electric cable insertion hole allowing the electric cable to be inserted thereinto, the housing also includes a filling space in communication with the electric cable insertion hole; the filling space is located in positional correspondence with the pressure-contact part, the electric cable insertion hole has a width such that an outer circumferential surface of the insulating cover of the electric cable contacts with an inner wall thereof, and the filling space is filled with a filler such that the filler covers the pressure-contact part, the insulation barrel which pressure-contacts on the insulating cover is wider than the electric cable in a width direction, the electric cable extending in a longitudinal direction perpendicular to the width direction, wherein the filling space has a width in the width direction larger than a width of each of the electric cable insertion hole in the width direction, and substantially identical to a width of the insulation barrel in the width direction, a plurality of steps are formed between the electric cable insertion hole and the filling space, each of the steps corresponding to a difference between a width of the electric cable and the width of the insulation barrel.