| 摘要 |
A cleaner head that includes an agitator and a drive assembly for driving the agitator. The drive assembly includes a dog for transmitting torque to the agitator. One of the dog and the agitator includes a shank having a screw thread, and the other of the dog and the agitator includes a bore having a complementary screw thread. The shank projects into the bore and the two threads mate such that, as the dog rotates, the agitator screws on to and tightens against the dog. |
