Patent ID: 8365341

Claim:
A mop assembly comprising: a rotary rod structure including a rotary rod defining an elongated axial space therein, and a driving unit fixed securely within said axial space of said rotary rod and formed with a central spiral hole; a handgrip structure disposed above said rotary structure and including a handgrip rod connected telescopically to said rotary rod from above, a spiral spindle disposed within said handgrip rod, having an upper portion fixed to said handgrip rod so as to move together therewith and a lower portion engaging rotatably to said spiral hole within said driving unit and extending into said rotary rod, and a cleaning mop connected pivotally to a bottom end of said rotary rod; and a spinning structure including a water bucket, a draining bucket disposed within said water bucket for receiving said cleaning mop therein, and a support post installed vertically in said water bucket below said draining bucket in such a manner that said support post has an upper end supporting said draining bucket thereabove; wherein, once said cleaning mop is placed within said draining bucket, axially downward movement of said handgrip structure relative to said rotary rod structure results in axial rotation of said spiral spindle within said spiral hole in said driving unit into a predetermined direction, thereby driving said draining bucket to rotate in said predetermined direction and hence draining out water from said cleaning mop by virtue of centrifugal force and wherein axially upward movement of said handgrip structure relative to said rotary rod structure results in continuously driving and rotating said draining bucket in said predetermined direction.