Abstract: An optical cable, in which a fiber optic core and tensile strength filaments are covered with a covering, is connected to a connecting element incorporated into a connector, wherein a clamping member clamps the end portion of the covering along its outer peripheral surface in a state where the covering has been removed from the end portion of the optical cable such that the fiber optic core and the tensile strength filaments are uncovered; a gripping member that grips the exposed tensile strength filaments in a state where the exposed fiber optic core passes therethrough; and a protective member that covers a range extending from the clamping member to the gripping member in the axial direction of the fiber optic core in a state where the exposed fiber optic core is connected to a connecting element of the connector while the gripping member is attached to the connector.

Abstract: An optical cable, in which a fiber optic core and tensile strength filaments are covered with a covering, is connected to a connecting element incorporated into a connector, wherein a clamping member clamps the end portion of the covering along its outer peripheral surface in a state where the covering has been removed from the end portion of the optical cable such that the fiber optic core and the tensile strength filaments are uncovered; a gripping member that grips the exposed tensile strength filaments in a state where the exposed fiber optic core passes therethrough; and a protective member that covers a range extending from the clamping member to the gripping member in the axial direction of the fiber optic core in a state where the exposed fiber optic core is connected to a connecting element of the connector while the gripping member is attached to the connector.

Abstract: Plug housing with retaining portion having a cylindrical sleeve portion securing in place a core exposed by stripping a sheath from a front end portion of a fiber optic cable. Sleeve portion, at multiple locations in the circumferential direction, has multiple elastic retaining pieces with slits extending from an intermediate location in the axial direction of the sleeve portion to its front end, and a minimum inside diameter portion in the inside diameter during elastic displacement of the elastic retaining pieces throughout the extent of the slits in the axial direction. During the mating of the retaining portion and receptacle, while the front end of the core is positioned forwardly of the minimum diameter portion or at the minimum inside diameter portion, sleeve portion undergoes forces originating in the receptacle, and elastic retaining pieces are elastically displaced in the radial inward direction of the sleeve portion, thereby securing the core.