Busbar structure for capacitor

A busbar structure for use in a capacitor,

• the busbar structure comprising:
• a capacitor element comprising, at axial ends on both sides thereof, electrodes disposed in a pair and having different polarities;
• a first busbar and a second busbar each having a plate-like shape, the first and second busbars respectively comprising a base end portion, a side plate portion, an opposing plate portion, and a terminal for external connection,
• the base end portion being connectable to the electrodes of the capacitor element, the side plate portion extending from the base end portion and being disposed along the upper side surface of the capacitor element, the opposing plate portion extending upward from the side plate portion, the terminal for external connection extending from the opposing plate portion;
• an insulating member interposed between the opposing plate portions of the first and second busbars in a manner that the opposing plate portions are disposed in proximity against each other;
• and
• a mold resin that covers all of the capacitor element and the base end portions and the side plate portions of the first and second busbars,
• the insulating member being integrated only with one of the first and second busbars by insert molding in which one of the opposing plate portions in the first or second busbar is used as an insert target and filled with a resin material which is a source material of the insulating member,
• the resin material of the insert molding being poured to run toward a back-surface side from a front-surface side of the one of the opposing plate portions, the front-surface side not facing another one of the opposing plate portions of the first or second busbar so as to entirely enclose the one opposing plate portion,
• the terminal for external connection extending from the one of the opposing plate portions being extended in manner that protrudes upward from an end of the insulating member,
• a surface of the another one of the opposing plate portions facing the one of the opposing plate portions being allowed to contact the insulating member on the back-surface side.