| 摘要 |
PROBLEM TO BE SOLVED: To improve the waterproof function of an auxiliary motor with a simple and inexpensive configuration by fitting an auxiliary motor on the bottom part lower surface of a washing tank with a fitting plate, providing a cover part for introducing water drops to the fitting plate and providing a downward cover part for permitting the water drops to fall onto the cover part. SOLUTION: An auxiliary motor 3 for opening/closing a drain valve is fitted to a substrate 2 at the side of the bottom part lower surface of the washing tank 1 with a gear case 5 and the fitting plate 7. Besides, a part between the gear case 5 and the drain valve is connected by a wire 6. The cover part 7E and the downward cover part 7F are formed in the outer peripheral part of a planar quadrangle upper side plane part 7A in the fitting plate 7. That is, when the water drops come from the outer surface of the washing tank 1 by nay of the substrate 2, the cover part 7E introduces them to a position apart from the just upper part of the auxiliary motor 3. Then, the downward cover part 7F permits the water drops to fall onto the position apart from the just upper part of the auxiliary motor 3. Therefore, the water drops are surely prevented from invading the auxiliary motor 3.
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