Cleaning sheet

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Solution Overview

Problem

Conventional cleaning sheets with raised and sunken shapes for improved dust collection often compromise on strength, leading to twisting and tearing during use, which degrades their collection properties.

Innovation Solution

A cleaning sheet design featuring embossed sections compressed in the thickness direction and non-embossed sections arranged alternately along bent sections, with non-embossed sections having sunken parts and extending diagonally, maintains sheet strength while enhancing dust collection properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If low-density areas are formed in the sheet to improve dust collection properties, then collection properties are improved, but sheet strength is reduced causing twisting and tearing

Engineering Contradiction:

Improvedust collection propertiesVSAvoidsheet strength

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The sheet is segmented into multiple embossed sections and non-embossed sections arranged in a specific pattern. The non-embossed sections provide structural strength while the embossed sections provide dust collection functionality, resolving the contradiction between strength and collection properties.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the sheet have different properties: embossed sections with compressed fibers for dust collection and non-embossed sections with higher density for strength. This local differentiation allows the sheet to simultaneously achieve good collection properties and maintain sufficient strength.

Inventive Principle:

Principle #3Local quality

2Reliability

If the sheet is formed with raised and sunken shapes to increase volume and improve thickness, then dust collection properties are improved, but frictional resistance increases

Engineering Contradiction:

Improvedust collection propertiesVSAvoidfrictional resistance

Core Design Contradiction:

ReliabilityVSForce

Solution Approach 1:

Instead of making the entire sheet raised and sunken, only specific embossed sections are created with raised and sunken shapes while non-embossed sections remain flat. This partial application reduces overall frictional resistance while maintaining dust collection properties in the embossed regions.

Inventive Principle:

Principle #16Partial or excessive action

3Reliability

If non-embossed sections are arranged at predetermined intervals along bent sections, then collection properties are improved, but sheet structure becomes more complex

Engineering Contradiction:

Improvecollection propertiesVSAvoidsheet structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The sheet structure is segmented into repeating units of embossed and non-embossed sections arranged in a regular pattern along the bent sections. This segmentation provides systematic dust collection enhancement while maintaining a relatively simple, repeatable structure that is easy to manufacture.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS11382482B2Cleaning sheet

Publication Date: 2022.07.12 DAIO PAPER CORP

AI summary

A cleaning sheet that is replaceably attached to a flat head section of a cleaning tool; forms a cleaning surface covering the bottom surface of the head section; is bent along a longitudinal edge of the head section and locked to the upper surface of the head section; and has an embossed section having a sheet compressed in the thickness direction and an uncompressed non-embossed section that are arranged alternately along a bent section bent along the longitudinal edge. As a result, a cleaning sheet can be provided that maintains sheet strength and has excellent collection properties.