To surely achieve waterproof effects between a panel and a male screw member, and easily conduct fastening work for a female screw member to the male screw member.
In this waterproof structure 31, the female screw member 11 is fastened via a packing member 33 and a plate washer member 35 to the male screw member 5, penetrating an insertion hole 3 in the panel 1, and the washer member 35 is provided with a washer body 23 to be inserted to the male screw member 5, a slide contact surface 25 formed on one surface side of the washer body 23 to slide to be in contact with the female screw member 11 to be pressed, and a pressure surface 27 formed on the other surface side of the washer body 23 to press the packing member 33. A positioning and extension regulating part 51 is provided to position the female screw member 11, fastened to the male screw member 5 to a specified fastening position and regulate the extension of the packing member 33 pressed by the pressure surface 27 from the center side toward the outer circumferential side.
SUZUKI TORU
SATO KEIICHI
KOMATSU KOHEI
NIPPON TELEGRAPH & TELEPHONE
ORIGIN ELECTRIC
SHINDENGEN ELECTRIC MFG