Patent ID: 6328057
Filing Date: 2001-12-11
Classification: B60S,F04B,Y10T

Abstract:
An air valve connection head of a hand-held air pump, said air valve connection head comprising a housing which is provided in one end with a receiving cell for receiving an air valve of the inflatable object, said housing provided in other end with a connection hole for connecting said housing to a cylindrical tube of the hand-held air pump, said housing further provided with an air admission duct in communication with said connection hole and said receiving cell, said receiving cell provided therein with an air injecting mechanism, said housing further provided with a control handle pivoted thereto for causing said air injecting mechanism to lash securely and open up the air valve; wherein said housing is formed of a first housing member and a second housing member, said first housing member provided at one end thereof with an insertion hole extending throughout a short axis of said first housing member, said first housing member provided at other end with said connection hole extending to the proximity of said insertion hole, and a first air duct extending from the bottom of said connection hole to said insertion hole, into said insertion hole said second housing member is lodged, said second housing member provided with said receiving cell with an open end corresponding to one end of said insertion hole, said receiving cell having a fitting port located at other end thereof, said control handle being pivoted to said housing such that said control handle is corresponding in location to said open end of said receiving cell, said second housing member being provided in an outer periphery thereof with a valve cell corresponding in location to said first air duct, a second air duct extending from the bottom of said valve cell to said receiving cell to form said air admission duct along with said first air duct and said valve cell, said valve cell of said second housing member being provided therein with a check valve for allowing air to flow in a one-way manner from said first air duct to said second air duct,wherein said insertion hole of said first housing member is provided in the wall with a planar surface located at one end of said first air duct; wherein said valve cell is provided with a displacing plate capable of being forced by air current to displace, said displacing plate provided with a circular protruded strip facing said first air duct, and an air guiding groove whereby said displacing plate presses against said wall of said insertion hole such that said first air duct is sealed off by said circular protruded strip, air in said valve cell flowing into said second air duct via said air guiding groove at such time when said displacing plate presses against the bottom of said valve cell.