Patent ID: 7841046

Claim:
A vacuum cleaner nozzle comprising: a nozzle housing ( 10 ); a wheel carriage ( 10 a ) pivotally mounted to nozzle housing ( 10 ) for supporting said housing on a floor surface; a height adjusting apparatus attached to nozzle housing ( 10 ) and comprising: a barrel ( 1 ) attached to the truckle frame ( 10 a ) and having a vertical passage ( 2 ), at least one groove module ( 4 ) communicating with said vertical passage ( 2 ) and formed on an inner surface thereof, said groove module ( 4 ) having a first positioning point and a second positioning point which is different from said first positioning point in a height; an actuator member ( 8 , 9 ) disposed in vertical passage, having at least one rib ( 8 a , 9 a ) for corresponding with the groove module ( 4 ); a lifting member ( 7 ), which is disposed in the vertical passage ( 2 ) under the actuator member ( 8 , 9 ) and is adapted for lifting the nozzle housing ( 10 ); said lifting member is driven by said actuator member so as to hold the nozzle housing ( 10 ); and a resilient member ( 6 ), which is disposed under the lifting member ( 7 ) for supporting the lifting member ( 7 ); wherein when the actuator member ( 8 , 9 ) moves downwardly, said rib moves ( 8 a ) from the first positioning point to the second point along at least a spiral path and said nozzle housing returns to its original position after a circulation by pressing the actuator member repeatedly.