| 摘要 |
PURPOSE:To provide a printed board, a work of which is simple and which is formed into a form of a strong soldering strength. CONSTITUTION:In a board 3 having a plurality of hole parts, in which electrical connecting parts 1a to 1f are inserted, the hole parts are formed into oblong holes 3a to 3c of a diameter very larger than that of the circumscribed circles of the connecting parts 1a to 1f and are formed into the oblong holes 3a to 3c, whose direction is alternately shifted from the direction of the connecting parts 1a to 1f. Thereby, a static pressure between the board 3 and an element and the strength of the board against vibration can be increased and at the same time, the strength of a press die for board 3 work use can also be increased and a work of the printed board is simplified.
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