| 摘要 |
<p>A mop includes a handle connected to one end of a first rod. The other end of the first rod is connected to a second rod. A driving unit includes a spiral member disposed in one end of the second rod. A clutch unit is disposed in the first rod. A mopping unit is pivotably connected to the other end of the second rod. The clutch unit includes a sleeve disposed in the first rod and having a crown teeth defined in a lower end thereof. A bearing is connected to an opening of the sleeve, which is rotatable relative to the bearing. A crown gear is disposed in the sleeve and separably engaged with the crown teeth. A spring is disposed between the crown gear and the bearing. The spiral rod inserts through the bearing and the spring and is fixed to the crown gear.</p> |
