Mobile floor cleaning appliance

The integration of an auxiliary power supply and control element in mobile floor cleaning devices addresses power failure issues, enabling safe manual movement and improving operational reliability by allowing steering angle adjustment, thus resolving the challenge of immobilized cleaning machines.

WO2026145910A1PCT designated stage Publication Date: 2026-07-09ALFRED KARCHER SE & CO KG
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
ALFRED KARCHER SE & CO KG
Filing Date
2025-12-01
Publication Date
2026-07-09

AI Technical Summary

Technical Problem

Existing electrically powered mobile floor cleaning devices face operational reliability issues due to power supply failures or malfunctions, making it difficult to move or reposition them when they come to a standstill, especially for large machines that cannot be easily lifted.

Method used

Incorporating an auxiliary power supply unit and an auxiliary control element to actuate the steering actuator, allowing the device to change the steering angle even when the primary power supply fails, enabling manual movement and increased operational safety.

Benefits of technology

Ensures the floor cleaning device can be moved safely from hazardous positions even without a functional primary power supply, enhancing operational reliability and safety by allowing manual operation and preventing accidents.

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Abstract

The present invention relates to a mobile floor cleaning appliance, comprising a chassis (106) for moving on a floor surface (104), which chassis comprises at least one wheel (108), which can be driven by means of a drive unit (110), and at least one steering roller (112), and comprising a steering device (122) which is coupled to the at least one steering roller (112) and has an electric steering actuator (124) for acting directly or indirectly on the at least one steering roller (112), a cleaning device (128) having at least one cleaning tool (130) for cleaning the floor surface (104), an electrical power supply device (118), wherein electrical power can be provided to the drive unit (110) and to the steering actuator (124), and a control unit (116) which is coupled to the drive unit (110) and to the steering actuator (124). In order to provide such a floor cleaning appliance (100) which has increased operational reliability, according to the invention the floor cleaning appliance (100) comprises an electrical auxiliary power supply unit (166) which can be coupled to the steering actuator (124), and at least one auxiliary operating element (154) for actuating the steering actuator (124) in order to change a steering angle of the at least one steering roller (112).
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