PURPOSE: To easily utilize the air discharged by an air pump by connecting a hose directly to a nozzle provided on the case of an air pump without using parts such as Y-shape joint.

CONSTITUTION: A chamber 31 for accumulating the air discharged by two air pumps 8 on one point, is provided. A plurality of, or four nozzles 32, for example, for discharging air from the chamber 31, are provided, and a cap 36 is provided on each nozzle 32. When the air accumulated in the chamber 31 is to be utilized, the caps 36 of the nozzles 32 are removed as required, and a hose is connected to each nozzle 32. The air can thus be utilized only by connecting the hose directly to the nozzle of a main body case, without using a Y-shape joint as in a conventional way, and since there is no loss of air, the air formed by the air pump can be utilized effectively.