PROBLEM TO BE SOLVED: To provide a door mechanism for an air chamber apparatus, which considerably facilitates access to a pressurized container used for an air chamber, is opened and closed by a user by himself without requiring door opening closing operation by a third person when used, fully secures air tightness when the door is closed, and has an inexpensive cost and high performance.SOLUTION: A rectangular opening portion 2 is provided in the front top surface of a chamber upper part 29 of the pressurized container which a user enters. A rectangular door having a curved surface having substantially the same shape as the peripheral surface of the chamber is disposed on the inside of the opening portion 2. The door has a size slightly larger than the opening portion 2, the peripheral edge of the door overlaps an inner wall surface of the chamber, and the air tightness is formed between the door and the inner wall surface of the chamber upper part 29. Rails are provided at the edges of the door and on the inside of the edges of the opening portion 2, respectively, and the door is moved to the back side of the chamber upper part 29, parallel with the wall surface of the chamber upper part 29, and is allowed to be opened and closed.COPYRIGHT: (C)2013,JPO&INPIT【課題】エアチャンバに使用する高圧容器への出入りが極めて簡単で、使用にあたっては第三者による扉開閉作業を必要とすることなく使用者単独でも扉の開閉ができ、扉を閉じたときの密閉性を十分に確保することができる安価で高性能のエアチャンバ装置のドア機構を提供する。【解決手段】使用者が入る高圧容器のチャンバ上部29の前方上面に略矩形形状の開口部2が設けられている。この開口部2の内側に、チャンバの周面と略同じ形状の湾曲面を持つ矩形形状のドアが配置されている。ドアの大きさは開口部2より少し大きくその周縁部がチャンバ内壁面に重なり、チャンバ上部29の内壁面との間で密閉状態を形成することができる。ドアの縁部および開口部2の縁部の内側にレールを設けてあり、ドアはチャンバ上部29の後方にチェンバ上部29の壁面に対し並行に移動し、その開閉が可能である。【選択図】図1
