Robot cleaner

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Solution Overview

Problem

Conventional robot cleaners lack a replaceable wet cleaning unit and sufficient friction force for effective floor cleaning, limiting their cleaning efficiency and maintenance.

Innovation Solution

A robot cleaner design featuring a detachable cleaning unit with a rotatable roll pad and a fluid supply system, including a tank, pump, and hose, which ensures consistent friction force and easy pad replacement for improved cleaning performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a pad is fixed on the bottom surface of the robot cleaner, then the cleaning unit cannot be replaced, but the cleaning effectiveness and maintenance convenience deteriorate

Engineering Contradiction:
Improvecleaning unit replaceabilityVSAvoidcleaning effectiveness
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The cleaning unit is segmented from the main body of the robot cleaner, allowing it to be detached and replaced independently. The cleaning unit includes a pad assembly that can be removed and exchanged without affecting the rest of the robot cleaner structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The pad assembly is extracted as a separate, removable component from the cleaning unit. This allows the pad to be taken out for replacement or cleaning while keeping the holder and other cleaning components in place.

Inventive Principle:
Principle #2Taking out (Extraction)

2Device complexity

If a pad is fixed on the bottom surface, then the structure is simple, but sufficient friction force for effective cleaning deteriorates

Engineering Contradiction:
Improvecleaning unit structureVSAvoidfriction force
Core Design Contradiction:
Device complexityVSForce

Solution Approach 1:

The cleaning unit is designed with movable and adjustable components that allow dynamic adaptation to different cleaning conditions. The holder can be adjusted to maintain optimal friction force between the pad and floor surface during operation.

Inventive Principle:
Principle #15Dynamics

3Ease of repair

If the cleaning unit is made replaceable, then maintenance convenience is improved, but the device complexity increases

Engineering Contradiction:
Improvemaintenance convenienceVSAvoidcleaning unit structure
Core Design Contradiction:
Ease of repairVSDevice complexity

Solution Approach 1:

The cleaning unit is divided into modular segments (holder, pad assembly, connection parts) that can be independently replaced. This segmentation simplifies maintenance by allowing users to replace only the worn pad rather than the entire cleaning unit.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The holder is designed with universal connection features that can accommodate different pad types and sizes. This multi-functionality allows the same holder structure to work with various pad configurations, reducing overall system complexity while maintaining replaceability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 design allows for efficient wet cleaning with a replaceable pad, enhancing cleaning effectiveness and maintenance convenience by maintaining sufficient friction force and enabling thorough floor cleaning.

Implementation Method 1

a pump configured to pump the fluid contained in the tank such that the fluid contained in the tank is supplied to the cleaning unit

Methodology Applied
Scientific EffectPump: Pump

Implementation Method 2

the roll pad may rotate together with the rotation shaft to clean the bottom surface when the driving part rotates the rotation shaft

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS9795265B2Robot cleaner
Publication Date: 2017.10.24 SAMSUNG ELECTRONICS CO LTD
  • US9795265B2 patent drawing
  • US9795265B2 patent drawing
  • US9795265B2 patent drawing

AI summary

A robot cleaner enables a wet cleaning, has a replaceable cleaning unit, and ensures a sufficient friction force for doing a wet cleaning of a floor. The robot cleaner includes a frame including a wheel for driving, a replaceable cleaning unit formed at a lower part of the frame to clean a bottom surface and disposed in front of the wheel, a tank disposed at an upper part of the wheel and configured to supply fluid to the cleaning unit, a pump configured to pump the fluid contained in the tank such that the fluid contained in the tank is supplied to the cleaning unit, a hose configured to extend to the pump and the upper part of the cleaning unit and through which the fluid pumped by the pump flows, and a bumper formed on a side of the frame.