Air passageway switchable pump head for air pump

An air passageway switchable pump head of an air pump, comprising:

• a housing comprising an elongated accommodation space, a first air outlet passageway located on one end of said elongated accommodation space, an air intake passageway located on one lateral side thereof in communication with said elongated accommodation space, and a second air outlet passageway located on the same lateral side between said air intake passageway and said first air outlet passageway and kept in communication with said elongated accommodation space;
• a connection member accommodated in said elongated accommodation space of said housing and adapted for connection to an air valve of an inflatable object to be inflated, said connection member comprising a through hole kept in communication with said first air outlet passageway;
• a switch valve mounted in said housing and kept in communication with said air intake passageway, said first air outlet passageway and said second air outlet passageway, said switch valve comprising a valve seat abutted against said connection member, said valve seat comprising a valve hole located on the center thereof and aimed at the through hole of said connection member to form a first air passageway of said switch valve in communication with said first air outlet passageway of said housing, a valve body axially movably accommodated in said elongated accommodation space of said housing, said valve body comprising a pin facing toward said valve hole of said valve seat and adapted for closing said valve hole to block said first air outlet passageway of said housing, a spring member stopped between said valve seat and said valve body to keep said valve body and said valve seat apart and to form a second air passageway of said switch valve between said valve body and said valve seat;
• and
• a operating member mounted at one end of said housing opposite to said first air outlet passageway and operable to move said switch valve between a first position where said pin closes said valve hole to block said first air passageway, allowing air communication between said second air passageway of said switch valve and said second air outlet passageway, and a second position where said valve body is moved toward said valve seat and closed on said valve seat to block said second air passageway of said switch valve, and at the same time, said pin is separated from said valve hole to open said first air passageway of said switch valve.