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US 2006/0068922 A1Published application
Cleaning head for floor cleaning device
AssigneeAlfred Kaercher GmbH & Co. KG
InventorsUli Haeussermann, Roland Jeutter
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AssigneeAlfred Kaercher GmbH & Co. KG
InventorsUli Haeussermann, Roland Jeutter
Estimating the term…
The invention relates to an overload coupling for the limited transfer of torque, in particular, for a floor cleaning device comprising a drive element and a driven element which are arranged concentrically to one another, thereby forming an intermediate space, wherein the intermediate space accommodates at least one coupling element which transfers torque and can be moved from the intermediate space into an alternative space contrary to the action of an elastic restoring force when an overload occurs. In order to design the overload coupling in a manner which is constructionally simpler and can be produced more inexpensively, it is suggested in accordance with the invention that the overload coupling have an overload element which is spring-loaded in the direction of rotation of the coupling element and releases the alternative space for the coupling element when the overload occurs. In addition, the invention relates to a cleaning head for a floor cleaning device with such an overload coupling.
Cleaning head for a floor cleaning device with a rotatable brush roller coupled to a drive motor via an overload coupling, wherein the overload coupling transfers only a limited torque, wherein the overload coupling has a drive element and a driven element arranged concentrically to one another, thereby forming an intermediate space, wherein the intermediate space accommodates at least one coupling element transferring torque, said coupling element being movable from the intermediate space into an alternative space contrary to the action of an elastic restoring force when an overload occurs and wherein the overload coupling has an overload element spring-loaded in the direction of rotation of the coupling element, said overload element releasing the alternative space for the coupling element when the overload occurs and being arranged between the coupling element and the alternative space in a coupling position of the coupling element.
Dependencies are inferred from the claim text.