Small size air pump

A small size air pump in which a motor is driven to actuate a pump section, so as to carry out a predetermined aspirating operation;

• said air pump comprising:
• a worm gear disposed at an output shaft of said motor;
• a worm wheel, disposed between said motor and said pump section, meshing with said worm gear;
• a smaller gear disposed coaxial with said worm wheel;
• a larger gear, disposed at a position held between said motor and said pump section, meshing with said smaller gear;
• actuator element having one end pivotally connected to a periphery of a flat part of said larger gear and the other end connected to an end part of a piston of said pump section;
• and
• a support plate connecting said motor and said pump section to each other;
• and
• wherein a first axle part of said worm wheel and smaller gear and a second axle part of said larger gear are arranged in said support plate;
• and
• said motor, said pump section, and said larger gear are disposed in series in an axial direction of said output shaft.