| 摘要 |
A changeover valve, for an upright vacuum cleaner, comprises a movable valve member ( 31 ) connected via a flexible duct to a dirt separator of the cleaner, and a valve body ( 30 ) having inlet ports ( 32, 33 ) connected, respectively, to an air inlet in the underside of a floor-engaging unit of the cleaner and, via a flexible hose, a suction nozzle of the cleaner. The valve member ( 31 ) is movable relative to the valve body ( 30 ) for selective alignment with either of the inlet ports ( 32, 33 ).
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