PROBLEM TO BE SOLVED: To provide an insect proofing tool having relatively large pressing area to the inner wall surface of a draining hole in the case of inserting the tool into the hole, surely preventing the intrusion of small insects and flexibly meeting the diversified inner forms of the draining holes.SOLUTION: The insect proofing tool 18 is composed of a tubular member 20 having raised protrusions 19 on the outer circumference, an escape preventing mechanism 21 composed of a base part 22 and a variable part 23 and placed at one opening of the tubular member 20, and an action rod 24 connected to the base part 22 and inserted into the tubular member 20. When the tool is inserted into a hole, the tubular member 20 is positioned in a groove 14 of the draining hole 15 and the base part 22 and variable part 23 are protruded beyond the end opposite to the opening 16 of the groove 14 of the draining hole 15. The variable part 23 is constricted in the radial direction of the tubular member 22 by moving the action rod 24 along the axial direction of the tubular member 20 to enable the engagement and disengagement with the opening end at the side opposite to the opening 16 of the groove 14 of the draining hole 15.COPYRIGHT: (C)2007,JPO&INPIT【課題】水抜き穴への挿着時において水抜き穴の内壁面への押し付け面積が相対的に大きく、小さな虫の侵入の防止をより確実に図ることができ、水抜き穴の内部形状の多様化へも柔軟に対応可能な防虫器具を提供する。【解決手段】防虫器具18は、外側周面に立状体19を起毛した筒状体20と、この筒状体20の一方の開口端に設けられ、基部22と可変部23とから成る抜け防止機構21と、基部22と連結すると共に筒状体内20に挿通された作動棒24とより構成され、挿着時に、筒状体20は水抜き穴15の溝部14内に位置し、基部22及び可変部23は、水抜き穴15の溝部14のうち開口部16とは反対側端よりも突出しており、作動棒24を筒状体20の軸方向に沿って動作させることにより、可変部23が筒状体22の径方向に拡縮して、水抜き穴15の溝部14のうち反開口部16側の開口端への係合とその解除を可能とする。【選択図】 図5
