A connection head of an inflation device, said connection head comprising:
- a housing with a long compartment having an open end, said compartment being provided at other end thereof with an air valve mouth, and in a periphery thereof with an air inlet;
- an elastic holding member disposed in said compartment such that said elastic holding member is corresponding in location to one end of said air valve mouth, said elastic holding member having a large diametrical hole extending from said air valve mouth, and a small diametrical hole extending from the underside of said large diametrical hole to another side;
- a long press member disposed in said compartment such that said press member displaces along the longitudinal direction of said compartment, and that an inner end of said press member presses against said holding member, and further that an outer end of said press member is located at said open end of said compartment, said press member having a through hole extending through the longitudinal direction thereof such that said through hole is split with said small diametrical hole of said holding member, said press member further having at least one air guide hole extending from a periphery thereof to said through hole whereby said through hole is provided in a wall thereof with an inclined surface;
- a long actuation member disposed in said through hole of said press member such that said actuation member displaces along a longitudinal direction of said through hole, said actuation member having a receiving space which is provided with an opening facing said air valve mouth, said receiving space being provided in the proximity of said opening with a stop portion, said actuation member being disposed in said through hole of said press member in such a manner that an outer end of said actuation member is located at the outer end of said press member whereby said actuation member is provided at an inner end thereof with at least one pliable arm corresponding in location to said inclined surface;
- a retrieving elastic member disposed in said through hole of said press member such that one end of said retrieving elastic member urges said press member, and that other end of said retrieving elastic member urges said actuation member in a direction toward the outer end of said press member;
- a valve pressing member having a length and disposed in said through hole of said press member such that said valve pressing member displaces along the longitudinal direction of said through hole to move into said receiving space, said valve pressing member having a stopped portion which can be stopped by said stop portion, said valve pressing member further having a pressed portion which can be pressed against by said pliable arm;
- a pushing elastic member disposed in said receiving space such that one end of said pushing elastic member urges said actuation member, and that other end of said pushing elastic member urges said valve pressing member in a direction toward said air valve mouth;
- and
- a swivel handle fastened pivotally by a pivot with said housing such that said swivel handle is corresponding in location to said open end of said compartment, said swivel handle having a first press portion, a second press portion, a third press portion, and a fourth press portion whereby said swivel handle swivels from a standby position to an operation position and vice versa such that said first press portion and said second press portion press respectively against said press member and said actuation member at the time when said swivel handle is located at the standby position, and that said third press portion and said fourth press portion press respectively against said press member and said actuation member at the time when said swivel handle is located at the operation position, said pivot and said third press portion being separated by a first distance greater than a second distance between said pivot and said first press portion, said pivot and said fourth press portion being separated by a third distance greater than a fourth distance between said pivot and said second press portion, said third distance and said fourth distance having a difference greater than a difference between said first distance and said second distance.