Abstract: An inter-terminal connection structure electrically connecting terminal portions via a conductive component. The conductive component includes a conductive member having connection portions that are fastened so as to be connected to the respective terminal portions, and a case having insulation properties while accommodating the conductive member, an insulating cover covering at least one of the terminal portions and the connection portions, an opening window provided to the insulating cover and exposing at least one of the terminal portions and the connection portions, and a relay portion provided to the connection portion or the terminal portion fastened to the at least one of the terminal portions and the connection portions covered by the insulating cover while being inserted through the opening window to be connected to the at least one of the terminal portions and the connection portions.

Abstract: A mine power management system includes: a first power line provided at an ascent and configured to exchange electric power with an ascending vehicle traveling on the ascent; a second power line provided at a descent and configured to exchange electric power with a descending vehicle traveling on the descent; and a power supply and storage apparatus configured to exchange electric power at least between the first power line and the second power line.

Abstract: A mine power management system includes: a first power line provided at an ascent and configured to exchange electric power with an ascending vehicle traveling on the ascent; a second power line provided at a descent and configured to exchange electric power with a descending vehicle traveling on the descent; and a power supply and storage apparatus configured to exchange electric power at least between the first power line and the second power line.

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).