Patent ID: 8214963

Claim:
A mop comprising: a spinning device; a shank connected to a first end of the spinning device; an operation rod having a first end connected to a second end of the spinning device; and a mop head fixed to a second end of the operation rod; wherein the spinning device comprises: an outer sleeve having a hollow interior space, and a first end and a second end in opposite positions; an inner sleeve located within the hollow interior space of the outer sleeve and having an inner space extended in an axial direction; a movable member fixed in the outer sleeve near the first end of the outer sleeve, and located in the inner space of the inner sleeve, the movable member being able to move axially relative to the inner sleeve and having a spiral hole defined thereon; a spiral rod extended through the spiral hole of the movable member; a connection tube located in the inner space of a second end of the inner sleeve; a clutch unit fixed to the spiral rod; an end member having one end movably connected to an end of the spiral rod to be rotatable relative to the spiral rod, and a clutch structure that faces the clutch unit and can be driven only in one direction, and the other end of the end member fixed to the operation rod; and a spring located in the inner space of the inner sleeve, two ends of the spring being in contact with the movable member and an inner edge of the inner sleeve, respectively; and wherein the spinning device drives the operation rod to spin when the operation rod moves axially relative to the spinning device.