| 摘要 |
PURPOSE: To prevent a short circuit of charging circuit parts with a simple structure, and enhance mounting density by using a flexible printed circuit board in a unique shape. CONSTITUTION: A battery charger is provided with a printed circuit board l on which charging circuit parts 3 are installed and a case 2 which encloses this printed circuit board 1 and has a secondary battery installing part 4. The printed circuit board 1 is a flexible printed circuit board 1, and the flexible printed circuit board 1 is folded back in one end part of a case inside surface, and the charging circuit parts 3 are installed on opposed surfaces 1A. A tip part 1B of the flexible printed circuit board 1 is bent and is extended between the opposed surfaces 1A, and is inserted between the charging circuit parts 3 arranged on the opposed surfaces 1A of the flexible printed circuit board 1. |
