Patent ID: 7819636

Claim:
An air pump coupled to a motor and adapted to pump air upon rotation of said motor, the air pump comprising: a body; an airbag unit mounted in said body, said airbag unit comprising at least one airbag, said at least one airbag each having an air chamber, an air inlet and a coupling portion, the coupling portion including a hole with a small-diameter section and a large-diameter section formed therein, the large-diameter section located between the small-diameter section and the air inlet; a lifting mechanism rotatable by said motor, said lifting mechanism having at least one arm respectively connected to the coupling portion of said at least one airbag and adapted to move said at least one airbag to pump air, said at least one arm having a head inserted into the large-diameter hole of the coupling portion of said at least one airbag, a plurality of ribs longitudinally formed on the periphery of the arm, and at least one groove formed on the periphery of the arm and located between the ribs; air intake control valve means movably set between the air chamber of each of said at least one airbag and the at least one groove of said lifting mechanism to control the air passage between the air chamber of each of said at least one airbag and the at least one groove of said lifting mechanism; and an exhaust structure coupled to said airbag unit for exhaust of air from said at least one airbag.