Cleaning tool for a floor cleaning appliance

Patent metadata

Field	Value
Publication number	US-2016220087-A1
Application number	US-201615097814-A
Country	US
Kind code	A1
Filing date	Apr 13, 2016
Priority date	Oct 14, 2013
Publication date	Aug 4, 2016
Grant date	—

Abstract

A cleaning tool for a floor cleaning appliance is provided, including a main body carrying a cleaning cover which is subject to wear, and including a signal transmitter which provides a wireless signal in dependence upon the degree of wear of the cleaning cover. To be able to detect in a cost-effective manner when a maximum admissible degree of wear of the cleaning cover is reached, the signal transmitter is of rigid construction and fixed to a movable carrying part, the carrying part being held on the main body and being movable from a normal position to an evasive position against a restoring force, the carrying part protruding further from the main body in the normal position than in the evasive position, and the carrying part and/or the signal transmitter contacting the floor surface to be cleaned when a maximum admissible degree of wear of the cleaning cover is reached.

First claim

1 . A cleaning tool for a floor cleaning appliance, comprising a main body carrying a cleaning cover which is subject to wear, and comprising a signal transmitter which provides a wireless signal in dependence upon the degree of wear of the cleaning cover, wherein the signal transmitter is of rigid construction and is fixed to a movable carrying part, the carrying part being held on the main body and being movable from a normal position to an evasive position against a restoring force, the carrying part protruding further from the main body in the normal position than in the evasive position, and at least one of the carrying part and the signal transmitter contacting the floor surface to be cleaned when a maximum admissible degree of wear of the cleaning cover is reached.

2 . The cleaning tool in accordance with claim 1 , wherein the cleaning tool is rotatable about an axis of rotation, and the carrying part is movable back and forth in the radial or axial direction between the normal position and the evasive position.

3 . The cleaning tool in accordance with claim 1 , wherein in the normal position of the carrying part, the signal transmitter protrudes from the main body and in its protruding region is surrounded by the carrying part.

4 . The cleaning tool in accordance with claim 1 , wherein the carrying part forms a protective sleeve which surrounds the signal transmitter in the circumferential direction.

5 . The cleaning tool in accordance with claim 1 , wherein when a maximum admissible degree of wear of the cleaning cover is reached, the carrying part is destroyable by use of the cleaning tool.

6 . The cleaning tool in accordance with claim 1 , wherein when the maximum admissible degree of wear of the cleaning cover is reached, the signal transmitter is removable from the main body.

7 . The cleaning tool in accordance with claim 1 , wherein the signal transmitter is configured as transponder.

8 . The cleaning tool in accordance with claim 1 , wherein the carrying part is held in a linearly displaceable manner on the main body.

9 . The cleaning tool in accordance with claim 8 , wherein the carrying part is held in a displaceable manner in a guide part which is fixable to the main body.

10 . The cleaning tool in accordance with claim 8 , wherein the carrying part forms a sleeve which with a front end region protrudes from the main body and with a rear end region is arranged inside the main body, the signal transmitter being arranged in the front end region, and a spring element extending into the rear end region.

11 . The cleaning tool in accordance with claim 9 , wherein the main body is of cylindrical configuration and comprises a bore into which the guide part is insertable.

12 . The cleaning tool in accordance with claim 11 , wherein the guide part is latchable to the main body.

13 . The cleaning tool in accordance with claim 1 , wherein the carrying part comprises a carrying body which accommodates the signal transmitter, and a base body which is connectable to the main body and is connected to the carrying body by way of an elastically deformable spring body.

14 . The cleaning tool in accordance with claim 13 , wherein the carrying body, the spring body and the base body jointly form a one-piece plastic molded part.

15 . The cleaning tool in accordance with claim 13 , wherein the spring body is configured as elastically deformable spring arm.

16 . The cleaning tool in accordance with claim 13 , wherein the main body is of cylindrical configuration and at an end face has a recess into which the carrying part is insertable.

17 . The cleaning tool in accordance with claim 1 , wherein the cleaning tool is configured as cleaning brush rotatable about an axis of rotation, and arranged in the direction of rotation of the cleaning brush in front of the signal transmitter are cleaning bristles which cover the signal transmitter at least partially during use of the cleaning tool until a maximum admissible degree of wear of the cleaning bristles is reached.

18 . The cleaning tool in accordance with claim 1 , wherein the cleaning tool is configured as roller brush rotatable about an axis of rotation with a cylindrical main body which carries a cleaning cover in the form of a bristle cover with a large number of outwardly projecting cleaning bristles between which the signal transmitter fixed to the carrying part is arranged.

Assignees

• Kaercher Gmbh & Co Kg Alfred

Inventors

• Schuetz Michael
• Nonnenmann Frank
• Merz Juergen
• Egler Christian
• Hausner Thomas
• Orban Attila

Classifications

• A47L11/4002

  Installations of electric equipment · CPC title

• A46B13/001

  Cylindrical or annular brush bodies · CPC title

• A47L11/4041 Primary

  Roll shaped surface treating tools · CPC title

• E01H1/056

  having horizontal axes · CPC title

• A46B15/001

  with means indicating the remaining useful life of brush · CPC title