Rotating Hollow Roller for Uniform Floor Care Fluid Application

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing self-propelled floor care devices struggle to apply floor care fluids, such as oil or wax, in a metered and uniform manner, especially when converting robotic vacuum cleaners for care purposes, often resulting in uneven distribution and undesired point-wise output due to standstill times.

Innovation Solution

A self-propelled floor care device equipped with a rotatable hollow roller body that stores floor care fluid, dispensing it as the roller rotates, eliminating fluid output during standstill and allowing for polished application without a complex pump system, and can be easily integrated into robotic vacuum cleaners by replacing the brush roller.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a robotic vacuum cleaner is converted to a floor care device by attaching a cloth soaked in care fluid, then the conversion is uncomplicated and can be easily integrated, but the care fluid output cannot be metered and is not uniform over the surface

Engineering Contradiction:
Improveease of conversionVSAvoiduniformity of fluid application
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The invention changes the state of the roller from stationary to rotating, which fundamentally alters how the care fluid is applied. The rotation speed becomes a controllable parameter that directly affects fluid distribution uniformity, allowing metered application while maintaining ease of conversion to robotic vacuum cleaners

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The invention introduces dynamic motion (rotation) of the roller body to transform the static fluid application process. The rotating roller with its porous surface dynamically distributes care fluid uniformly across the floor surface, solving the uniformity problem while keeping the system simple and easy to integrate

Inventive Principle:
Principle #15Dynamics

2Ease of manufacture

If a robotic vacuum cleaner with a soaked cloth is used for floor care, then the conversion is simple, but standstill times lead to undesired point-wise output of care fluid

Engineering Contradiction:
Improveease of conversionVSAvoidcontrol of fluid output
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

By making the roller rotate only when the device is in motion, the invention dynamically links fluid application to device movement. This eliminates uncontrolled point-wise output during standstill times, as the rotating roller continuously distributes fluid uniformly only when the device is moving across the floor

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The rotation of the roller creates a periodic action where care fluid is continuously and uniformly applied only during the motion phase. This periodic fluid application synchronized with device movement ensures reliable control, preventing unwanted fluid output during standstill periods

Inventive Principle:
Principle #19Periodic action

3Quantity of substance

If a pump system is used to apply floor care fluid, then a larger amount of fluid can be applied, but the system becomes complex

Engineering Contradiction:
Improveamount of fluid appliedVSAvoidcomplexity of pump system
Core Design Contradiction:
Quantity of substanceVSDevice complexity

Solution Approach 1:

The porous roller body serves itself by using its own rotation to distribute the care fluid uniformly across the floor. The roller's structure and motion automatically regulate fluid application without requiring external pump systems, thereby maintaining simplicity while achieving adequate fluid coverage for care purposes

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The invention extracts the fluid distribution function from a complex pump system and integrates it directly into the roller body itself. The porous roller structure inherently performs the fluid application function through its rotation, eliminating the need for separate pump components and simplifying the overall system

Inventive Principle:
Principle #2Taking out (Extraction)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution enables metered and uniform application of floor care fluids, preventing fluid leakage during standstill and allowing for simultaneous polishing, enhancing the efficiency and simplicity of converting robotic vacuum cleaners into floor care devices without the need for complex pump systems.

Implementation Method 1

A rotatable hollow roller body for storing the floor care fluid is provided, wherein the floor care fluid emerges from the roller body as the roller body rotates

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Data Source

PatentUS9615710B2Floor care device for applying a floor care fluid
Publication Date: 2017.04.11 MIELE & CO KG
  • US9615710B2 patent drawing
  • US9615710B2 patent drawing
  • US9615710B2 patent drawing

AI summary

A floor care device for the care of a floor includes a drive system that moves the floor care device over the floor, a device controller that controls the floor care device over a travel path, and a care apparatus that applies a floor care fluid to the floor. The care apparatus includes a rotatable hollow roller body that stores the floor care fluid, and the floor care fluid emerges from the roller body as the roller body rotates.