Playground pump (1) with a water pipe (5) and a piston (10), which conveys water from the water pipe (5) back and forth against gravity, whereby the piston (10) can be actuated via a piston rod (11) and with the end of the piston rod facing away from the piston (10) an actuating member for the reciprocating movement is connected, characterized in that the end of the piston rod (11) facing away from the piston (10) is connected to a crank (12) , whose rotary movement about its crank axis (13) drives the piston rod (11).
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