| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem of an insufficient function of an EMC remedy due to a bend or a breakage of a contact spring, a gap of a front plate and the spring or the like by contacting adjacent front plates with each other later ally via the spring. SOLUTION: A front plate structure of the printed circuit board comprises first and second sides 11 and 12 formed at side faces of the front plate 10 alternately disposed at right and left side faces, and the contacts 13 electrically connected to the first sides 11. In this case, when a plurality of the printed circuit boards 2 are mounted on a book shelf type sub-rack 1, the contacts 13 are contacted and longitudinally superposed with the second sides 12 of the adjacent plate 10 in the inside area of the adjacent plate 10.
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