Patent ID: 8641391
Filing Date: 2014-02-04
Classification: F04D

Abstract:
1. A built-in electric air pump for use in an inflatable product, comprising: a pump housing; an air duet conversion mechanism mounted in the pump housing and comprising an air duct panel; a cover assembly covering the pump housing; a switch assembly connected with the air duct conversion mechanism; a power source mounting cavity unitarily structured with the air duct panel; an air valve assembly disposed unitarily with the air duct panel on the bottom of the pump housing; and a power source device connected with the switch assembly and powering the air pump, wherein the air duct conversion mechanism comprises: an air duct panel press plate and an air duct panel energizing tab respectively mounted on the air duct panel; the air duct panel energizing tab acting as a conduit for electrical energy, a motor connected with the air duct panel and covered by a motor cover plate; an impeller mounted on a bottom surface of the air duct panel; and an air exchange valve horizontally provided laterally of the air duct panel and connected in a sleeve-like manner with an air exchange valve spring wherein a propelling helical surface is provided on the bottom of the air exchange valve, and an air in-out port is provided in a lower portion of the air exchange valve.