Electric power converting device, and board-to-board connecting portion

An electric power converter comprising:

• a first board;
• a second board;
• and
• a board-to-board connector interposed between the first board and the second board, the board-to-board connector electrically and mechanically connecting the first board and the second board, wherein
• the board-to-board connector includes:
• a male fitting member disposed on the first board;
• a male-side holding member disposed on the first board in a manner surrounding the male fitting member;
• and
• a female fitting member disposed on the second board,
• the male fitting member includes an insert having a substantially flat plate shape,
• the female fitting member has a first clamp portion and a second clamp portion facing each other,
• the first clamp portion has a first clamp piece and a second clamp piece arranged side by side with a predetermined space therebetween,
• the second clamp portion has a third clamp piece and a fourth clamp piece arranged side by side with a predetermined space therebetween,
• the male fitting member is fitted into the female fitting member to form an electrical contact,
• the male-side holding member is arranged to surround the male fitting member while being spatially separated,
• the male-side holding member disposed on the first board includes a peripheral wall which continuously surrounds the male fitting member disposed on the first board, the peripheral wall having a quadrangular shape, and
• the male-side holding member is formed separately from the female fitting member.