CEILING INSPECTION PORT

PROBLEM TO BE SOLVED: To provide a ceiling inspection port capable of effectively preventing a lid body from coming off, for example, in opening/closing of a door of a highly-airtight house, and also capable of making opening/closing operability proper.SOLUTION: A ceiling inspection port A, which is fixed to the periphery of an opening 2 opened in a ceiling 1, closes the opening 2 by supporting a lid body 4 put into a ceiling space 3 through the opening 2. The lid body 4 is supported in such a manner as to be capable of protruding/receding between a use preparation position and a use position along a specific diagonal line D direction. A hold-down part 6, which regulates the amount of lift by overlapping a top surface of at least a location of a corner part 53 of the lid body 4 in association with movement to the use position from the use preparation position, is formed to constitute the ceiling inspection port.SELECTED DRAWING: Figure 4 【課題】高気密住宅のドア開閉時などに蓋体が外れてしまうのを有効に防止でき、かつ、開閉操作性を良好にすることも可能な天井点検口の提供を目的とする。【解決手段】天井１に開設した開口２周りに固定され、開口２を通して天井裏３に入れられた蓋体４を支承して開口２を閉塞する天井点検口Ａであって、前記蓋体４を特定の対角線Ｄ方向に沿って使用準備位置と使用位置との間で進退移動可能に支承するとともに、使用準備位置から使用位置への移動に伴って蓋体４の少なくとも隅角部５３箇所の上面に重合して浮き上がり量を規制する押さえ部６を形成して天井点検口を構成する。【選択図】図４