| 摘要 |
PROBLEM TO BE SOLVED: To maintain a waterproof function for an operation hole of an electric power supply adjustment device provided in wiring.SOLUTION: The present invention relates to improvement of a mechanism which comprises a waterproof structure installed halfway in wirings 9, 10 supplying electric power to electric equipment and in outdoor or other watering environment and preventing water from entering the inside, has an operation hole 18 for adjusting operation on a power supply adjustment part 14 in an outer wall of a sealed container 1 containing the power supply adjustment part 14, and is provided with a screw lid 21 opening the operation hole 18 at need and hermetically closing it at other times and a waterproof seal member 22 interposed between a fastening surface of the screw lid 21 and a surface side of a peripheral wall. At an outer periphery of the operation hole 18, a cylindrical cover part 19 is projected which accommodates the seal member 22 and screw lid 21 so that the seal member 22 is neither watered nor exposed directly to the sunlight. A waterproof cap 23 is provided which hermetically seal an opening part as a projection end of the cover part 19 in a lid-openable and waterproof state.SELECTED DRAWING: Figure 2 |
