Patent ID: 7246408

Claim:
A cleaning tool for a vacuum cleaning device, the cleaning tool comprising: a housing having a bottom plate provided with a working slot; a rotatingly driven working tool rotatably supported in the housing and passing through the working slot so as to act on a surface to be cleaned; a motor arranged in the housing and having a motor shaft; a gear system connected between the motor and the working tool, wherein the gear system has a driving wheel driven by the motor shaft and a driven wheel fixedly connected to the working tool; wherein the driving wheel and the driven wheel are V-belt pulleys and have a peripheral groove, respectively; wherein the gear system further comprises a V-gear positioned between the driving wheel and the driven wheel, wherein the V-gear has an outer periphery that engages the peripheral grooves for establishing a driving connection between the driving wheel and the driven wheel; wherein at least one of the V-gear and one of the driving and driven wheels are movable relative to one another; wherein the driving wheel has a first rotary center point and the driven wheel has a second rotary center point, wherein the first and second rotary center points define a connecting line, and wherein a rotary center point of the V-gear is positioned at a spacing from the connecting line; wherein the first and second rotary center points are fixed at the housing and wherein the V-gear is movable into a gap between the driving wheel and the driven wheel; a pivot arm, wherein the V-gear is secured on the pivot arm, and wherein a maximum pivot stroke of the pivot arm is limited by a stop.