An electrical device connector comprising: a first central conductor having a first insulation layer provided around said first central conductor; a second central conductor having a second insulation layer provided around said second central conductor; a flexible insulator provided between an insulation end surface of the first insulation layer and an insulation end surface of the second insulation layer; and a barrel-shaped contact, characterised in that: the first central conductor comprises a first concave portion provided at an end surface thereof; the second central conductor comprises a second concave portion provided at an end surface thereof; the barrel-shaped contact is provided in a space portion formed by the first concave portion and the second concave portion, and wherein the barrel-shaped contact is configured to include: a center electrode; a plurality of contact pieces radially disposed on an outer periphery of the center electrode and including one contact surface coming in contact with an inner surface of the first concave portion and the other contact surface coming in contact with an inner surface of the second concave portion, across an intermediate portion as a boundary; and contact load springs (25a, 25b) provided between the contact piece and the center electrode. a first central conductor having a first insulation layer provided around said first central conductor; a second central conductor having a second insulation layer provided around said second central conductor; a flexible insulator provided between an insulation end surface of the first insulation layer and an insulation end surface of the second insulation layer; and a barrel-shaped contact, characterised in that: the first central conductor comprises a first concave portion provided at an end surface thereof; the second central conductor comprises a second concave portion provided at an end surface thereof; the barrel-shaped contact is provided in a space portion formed by the first concave portion and the second concave portion, and wherein the barrel-shaped contact is configured to include: a center electrode; a plurality of contact pieces radially disposed on an outer periphery of the center electrode and including one contact surface coming in contact with an inner surface of the first concave portion and the other contact surface coming in contact with an inner surface of the second concave portion, across an intermediate portion as a boundary; and contact load springs (25a, 25b) provided between the contact piece and the center electrode. the first central conductor comprises a first concave portion provided at an end surface thereof; the second central conductor comprises a second concave portion provided at an end surface thereof; the barrel-shaped contact is provided in a space portion formed by the first concave portion and the second concave portion, and wherein the barrel-shaped contact is configured to include: a center electrode; a plurality of contact pieces radially disposed on an outer periphery of the center electrode and including one contact surface coming in contact with an inner surface of the first concave portion and the other contact surface coming in contact with an inner surface of the second concave portion, across an intermediate portion as a boundary; and contact load springs (25a, 25b) provided between the contact piece and the center electrode. a center electrode; a plurality of contact pieces radially disposed on an outer periphery of the center electrode and including one contact surface coming in contact with an inner surface of the first concave portion and the other contact surface coming in contact with an inner surface of the second concave portion, across an intermediate portion as a boundary; and contact load springs (25a, 25b) provided between the contact piece and the center electrode.