Abstract: A cyclone silencer of cleaner includes an outlet pipe(2) partially inserted into a cyclone cylinder (1). Ribs (3) are arranged on the lower edge of said outlet pipe (2) and extend downwardly to reduce noise.

Abstract: The invention discloses a height adjusting apparatus for a vacuum cleaner nozzle, comprising: a barrel with a vertical passage, a groove module is formed on the inner surface of the barrel, said groove module comprises an upper groove, a lower groove, which has at least a first positioning point, a second positioning point differing from first positioning point in height and a intermediate point between the two positioning points; a resilient member, a lifting member, a driven member and a driving member are arranged in the passage of barrel from down to up. The height adjusting apparatus could be adjusted by applying a pressure force downwardly in vertical direction (for example, press by foot) and that takes less labor and time.