| 摘要 |
PROBLEM TO BE SOLVED: To protect electric parts against stress by matching the moving direction of a reciprocal member with the direction where the force being applied to each of a plurality of electric parts being mounted on a circuit board is minimized. SOLUTION: A circuit board 1 reciprocates in the direction of arrow (a). A plurality of electric parts, i.e., an aluminum electrolytic capacitor 2, an assembled resistor element 3 and an FFC connector 4 connected with a flexible flat cable(FFC) 5, are arranged on the circuit board 1 such that the reciprocating direction of the circuit board 1, shown by an arrow (a), is matched with the direction where the stress being applied to each part is minimized. For example, the aluminum electrolytic capacitor 2 is arranged such that the x-axis direction connecting two lead wires 2a led out from the bottom face and parallel with the surface of the circuit board 1 matches the moving direction of the circuit board 1. With such an arrangement, electric parts can be protected against application of stress without requiring any extra fixing means.
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