Patent ID: 7587779

Claim:
Mobile floor-cleaning machine comprising: a drive shaft, a tool holder connected to the drive shaft in a rotationally fixed manner, a rotationally drivable, disk-like cleaning tool which is detachably held on the tool holder, the cleaning tool being adapted to be detachably latched to the tool holder, and an unlatching mechanism enabling the cleaning tool to be disconnected from the tool holder in an axial direction wherein: the cleaning tool has a carrier part which, in a drive position, engages with the tool holder in a rotationally fixed manner and which is adapted to be moved into a release position, in which the carrier part is disengaged from the tool holder, by operation of the unlatching mechanism, complementary latching elements are disposed respectively on the carrier part and on the tool holder in the form of an annular latching protrusion configured as a closed ring and a plurality of latching hooks disposed in a receiving space, each of said latching hooks having a shank which is aligned parallel to a rotation axis of the drive shaft and a radially oriented latching nose at a free end, each said latching nose being adapted to be moved against an elastic restoring force in a radial direction and interact with the closed ring, and the carrier part and the tool holder are connected to one another in the drive position in a rotationally fixed manner by means of a tooth system in which the carrier part has a plurality of ribs which are disposed at a spacing from one another in a circumferential direction and which are oriented in the radial direction and which plurality of ribs accommodate between them, with play, a complementarily formed rib of the tool holder.