Operating handle assembly for hand air pump

Abstract

An operating handle assembly used with a pump to constitute a hand air pump is disclosed in include a handgrip unit having a handgrip and a pivot, and a pumping rod unit pivotally coupled to the handgrip unit and turnable about a pivot center relative to the handgrip unit. The pumping rod unit includes a pivot holder pivotally coupled to the pivot of the handgrip, and a piston rod coupled to a piston hole of the pump and axially movable relative to the pump between a received position and a first extended position and turnable about the pivot center within a predetermined angle between the first extended position and a second extended position when the piston rod reaches the first extended position.

1 . An operating handle assembly used with a pump to constitute a hand air pump, the operating handle assembly, comprising a handgrip unit and a pumping rod unit pivotally coupled to said handgrip unit and turnable about a pivot center relative to said handgrip unit, wherein:
 said handgrip unit comprises a handgrip and a pivot;   said pumping rod unit comprises a pivot holder pivotally coupled to said pivot of said handgrip of said handgrip unit, a piston rod coupled to a piston hole of said pump and axially movable relative to said pump between a received position and a first extended position and turnable about said pivot center within a predetermined angle between said first extended position and a second extended position when said piston rod reaches said first extended position.   
     
     
         2 . The operating handle assembly as claimed in  claim 1 , wherein said handgrip unit comprises a pivot connector; said pivot of said handgrip unit is located on said pivot connector. 
     
     
         3 . The operating handle assembly as claimed in  claim 1 , wherein said pumping rod unit comprises a pivot connector; said pivot holder of said pumping rod unit is located on said pivot connector. 
     
     
         4 . The operating handle assembly as claimed in  claim 1 , wherein said handgrip unit comprises at least one displacement match portion; said pivot holder of said pumping rod unit is slidable in said at least one displacement match portion of said handgrip unit. 
     
     
         5 . The operating handle assembly as claimed in  claim 1 , wherein said pumping rod unit comprises at least one displacement match portion; said pivot of said handgrip unit is slidable in said at least one displacement match portion of said pumping rod unit. 
     
     
         6 . The operating handle assembly as claimed in  claim 1 , wherein said handgrip unit comprises a retraction hole for receiving said pumping rod unit in said received position. 
     
     
         7 . The operating handle assembly as claimed in  claim 6 , wherein said retraction hole extends to one end of said handgrip unit opposite to said pumping rod unit. 
     
     
         8 . The operating handle assembly as claimed in  claim 1 , wherein said handgrip unit comprises an opening kept in communication with said pivot of said handgrip unit for allowing said pivot holder of said pumping rod unit to be inserted therethrough into said handgrip unit for coupling to said pivot of said handgrip unit. 
     
     
         9 . The operating handle assembly as claimed in  claim 1 , wherein said handgrip unit comprises a notch kept in communication with said pivot of said handgrip unit for allowing said pumping rod unit to be biased relative to said handgrip unit. 
     
     
         10 . The operating handle assembly as claimed in  claim 1 , wherein said pivot center divides said handgrip unit into a first segment and a second segment, said first segment being longer than said second segment; said first extended position is located on said second segment.