Abstract: An electroforming manufacturing method of a ferrule is provided, in which a position of the ferrule is accurately fixed while machining and fitting. In this method, even when the ferrule is a multiple-core type ferrule, a center portion thereof has sufficient strength. In the manufacturing method of a ferrule using electroforming, at least one dummy line is disposed in the vicinity of an electrode line. A positioning line used for accurately connecting the ferrules to each other, and another positioning line used as a reference position in machining the outside shape of the ferrule are also disposed in the vicinity of the electrode line and the dummy line, if necessary. Electroforming is carried out in this condition, and then the dummy line and positioning lines are taken out from an electroformed element to form a through hole to serve as positioning holes or to insert an optical fiber.

Abstract: A lock mechanism by which a mating connector socket to be mounted on a printed wiring board of an electronic equipment can be formed into a small size, and even if the direction of mounting of the connector socket is inverted, or if the electronic equipment itself is turned upside down, the locking can be easily released. In a connector plug (10) for electrically connecting a mating connector socket (20), mounted on a printed wiring board of an electronic equipment, to another electronic equipment through an electric cable (30), when the connector plug (10) is fitted in the connector socket (20), this fitted condition is locked by a lock mechanism, and the lock mechanism of the connector plug includes retractable lock pawls (12) provided at a face side of a fitting portion (11) of a generally rectangular parallelepiped shape, and lock release buttons (14) provided respectively at opposite side surfaces of a finger grip portion (13).