| 摘要 |
The present invention relates to an air column structure and, more specifically, to an air column structure consisting of an air tube (2) which is swollen in a form of a circular cylinder if air is filled, and shrunk to decrease volume thereof if the air is released; a connecting bracket (3) which is configured with a cover plate (301), a connection pipe (303), and a connection plate (302); an air valve (4) which forms an air inlet (401) connected to an air injection hose (403) and is opened and closed by a lever (402); an air pressure meter (5) which measures the injected air pressure; and a safety valve (6) which maintains the air pressure at an appropriate level by discharging internal air to the outside when the air pressure exceeds the certain pressure. |
