| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the need for the operation of fixing a member to block a check hole for waterproof checks to a housing, in an electric circuit housing part constituted of both a housing recessed part provided for the housing having a fastening surface to be fastened to a support, and a cover to block the housing recessed part in a state housing an electric circuit and to be united to the housing. SOLUTION: A check hole 44, which enables pneumatic pressure to act from the fastening surface 14b side into a housing recessed part 38 for checking waterproofness inside the housing recessed part 38 blocked by a cover 40, and comprises a multileveled part 45 facing the fastening surface 14b side, is provided for a housing 14 between the inner surface of the housing recessed part 38 and fastening surface 14b. A blocking member 46 to bring its outer circumference into elastic contact with the overall circumference of the inner surface of the check hole 44 is fitted in the check hole 44 with one end of the blocking member 46 in contact with the multileveled part 45 after the completion of waterproof checks, and a support 22 in contact with the other end of the blocking member 46 is fastened to the fastening surface 14b.
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