Mop with spinning device

A mop comprising:

• a handle connected to a first end of a first rod, a second end of the first rod connected to a second rod, which is retractable relative to the first rod;
• a driving unit comprising a spiral rod and a spiral member which has a spiral hole defined therethrough, the spiral member disposed in the second rod, the spiral rod inserting through the spiral hole of the spiral member, the spiral rod being able to spin and move relative to the spiral hole of the spiral member;
• a clutch unit comprising a sleeve disposed in the first rod, the sleeve having a unidirectional crown teeth defined in a lower end of the sleeve, a bearing connected to an opening of the sleeve and the sleeve being rotatable relative to the bearing, a unidirectional crown gear disposed in the sleeve and separably engaged with the unidirectional crown teeth in the sleeve, a spring disposed between the unidirectional crown gear and the bearing, the spiral rod of the driving unit having an end thereof extending through the bearing and the spring and fixed to the unidirectional crown gear;
• and
• a mopping unit pivotably connected to the second rod.