Dark-current-circuit interruption structure and electrical junction box including same

A dark-current-circuit interruption structure comprising:

• a lock mechanism configured to:
• attach, to an auxiliary case that accommodates a dark current circuit, a conductive component holder that holds a conductive component that conductively connects the dark current circuit such that the conductive component holder can be displaced relative to a direction of insertion and removal of the conductive component into and from a connection terminal of the dark current circuit;
• and
• hold the conductive component holder so as to be switchable between a connection position at which the conductive component is connected to the dark current circuit and a disconnection position at which the conductive component is disconnected from the dark current circuit, the lock mechanism including engaging portions provided on elastic projecting pieces formed on the conductive component holder, and engaged portions that are provided on the auxiliary case, and with which the engaging portions are to be engaged,
• wherein the conductive component is formed by a plate metal fitting,
• the conductive component holder includes at least one of the elastic projecting pieces and at least one of the engaging portions provided on each of a pair of side walls opposingly positioned on opposite sides in a thickness direction of the plate metal fitting with a gap between the plate metal fitting and each of the side walls,
• the auxiliary case includes at least one of the engaged portions on an inner side of each of a pair of wall portions that are respectively opposed to the pair of side walls, and,
• when attaching the conductive component holder to the auxiliary case, the engaging portions and the engaged portions are configured to come into contact with each other to cause the elastic projecting pieces to elastically deform in a direction in which the elastic projecting pieces approach each other, thus allowing insertion of the conductive component holder into the auxiliary case, and the engaging portions are configured to be engaged with the engaged portions due to elastic restoration of the elastic projecting pieces.