| 摘要 |
<p>A cleaner head comprises an agitator (3, fig 1), a drive assembly (4, fig 1) for driving the agitator (3, fig 1), and a control assembly 5 for powering on and off the drive assembly (4, fig 1). The control assembly 5 includes an actuator 18 and one or more pawls 16, 17. The actuator 18 moves to a first position when the cleaner head is lifted from a cleaning surface and to a second position when the cleaner head is placed onto the cleaning surface. The drive assembly (4, fig 1) is powered off when the actuator 18 is in the first position and powered on when the actuator 18 is in the second position. The or each pawl 16, 17 is pivotally attached to the actuator 18 and is moveable between an unlock position and a lock position. The pawl 16, 17 permits movement of the actuator 18 from the first position to the second position when in the unlock position, and prevents movement when in the lock position. The pawl 16, 17 moves to the lock position when the cleaner head is inverted and returns to the unlock position when the cleaner head is righted.</p> |
