Flexible Grinding Pad Assembly With Wavy Ring for Even Wear

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Solution Overview

Problem

Existing floor polishing and grinding pad assemblies exhibit uneven wear and inconsistent performance, leading to premature degradation and aesthetically undesirable results.

Innovation Solution

A floor polishing or grinding pad assembly featuring a flexible pad with a reinforcement ring and multiple abrasive disks, where the reinforcement ring has a wavy or undulating edge and radially extending slots, and an insulator spacer to reduce heat transfer, enhancing flexibility and heat management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional polishing pad is used, then the pad structure is simple, but the pad exhibits uneven wear and inconsistent polishing performance

Engineering Contradiction:
Improvepolishing performance consistencyVSAvoidpad structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The polishing pad is divided into multiple functional layers including a foam core layer, reinforcement layers, and abrasive tool mounting sections. This segmentation allows each layer to perform its specific function independently, ensuring uniform wear and consistent polishing performance across the entire pad surface.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The pad assembly uses composite construction combining foam material for flexibility, fabric or mesh reinforcement layers for structural stability, and rigid mounting sections for tool attachment. This composite approach resolves the contradiction by integrating materials with complementary properties to achieve both consistency and controlled complexity.

Inventive Principle:
Principle #40Composite materials

2Ease of operation

If the pad is made more flexible to improve floor contact, then floor contact improves, but the pad structure becomes more complex

Engineering Contradiction:
Improvefloor contact qualityVSAvoidpad structure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The pad features localized flexibility in the foam core sections that contact the floor, while maintaining structural rigidity in the reinforcement layers and tool mounting areas. This local differentiation of mechanical properties allows improved floor contact without requiring the entire pad structure to be complex.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The pad incorporates dynamic elements such as flexible mounting mechanisms that allow the abrasive tools to adapt their position during operation. This dynamic capability improves floor contact quality while the self-adjusting nature reduces the need for complex static structural design.

Inventive Principle:
Principle #15Dynamics

3Reliability

If abrasive tools are mounted directly to the reinforcement ring, then the structure is simpler, but heat transfer degrades the adhesive

Engineering Contradiction:
Improveadhesive durabilityVSAvoidmounting structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

A thermal insulating layer or heat-resistant adhesive intermediary is introduced between the abrasive tools and the reinforcement ring. This intermediary material blocks heat transfer from the abrasive tools to the adhesive, protecting the adhesive bond while adding a controlled structural element to the mounting system.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The mounting structure incorporates heat-resistant materials or thermal barriers in advance of the heat generation problem. This preemptive approach cushions against thermal degradation before it occurs, extending adhesive life without requiring complex active cooling or monitoring systems.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

4Shape

If the pad uses a wavy or undulating reinforcement edge, then aesthetic design improves and flexibility varies, but manufacturing complexity increases

Engineering Contradiction:
Improveaesthetic designVSAvoidmanufacturing simplicity
Core Design Contradiction:
ShapeVSEase of manufacture

Solution Approach 1:

The reinforcement layer incorporates wavy or undulating curved edges instead of straight lines. These curved geometric features provide aesthetic appeal and create varied flexure characteristics across different sections of the pad, while the curvature can be efficiently produced using standard cutting and forming techniques.

Inventive Principle:
Principle #14Spheroidality (Curvature)

Solution Approach 2:

The wave pattern dimensions, amplitude, and frequency are optimized within practical manufacturing ranges. By selecting parameter values that balance aesthetic requirements with manufacturing capabilities, the design achieves desirable visual effects and functional flexibility without excessive manufacturing complexity.

Inventive Principle:
Principle #35Parameter changes

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 provides improved floor contact and polishing performance, reduces adhesive degradation, and allows for easier installation, while creating aesthetically pleasing designs and extending the pad's lifespan.

Implementation Method 1

an insulator or spacer between a head of an abrasive tool and a reinforcement ring

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Data Source

PatentUS10046438B2Polishing or grinding pad assembly
Publication Date: 2018.08.14 HUSQVARNA AB
  • US10046438B2 patent drawing
  • US10046438B2 patent drawing
  • US10046438B2 patent drawing

AI summary

A floor polishing or grinding pad assembly is provided. In one aspect, a polishing or grinding pad assembly employs a flexible pad, a reinforcement layer or ring, and multiple floor-contacting tools such as abrasive disks. In another aspect, the reinforcement layer includes a wavy or undulating internal edge shape. A further aspect includes an inner ring edge having radially extending slots between pairs of radially enlarged tool mounting peaks. Still another aspect includes an insulator or spacer between a head of an abrasive tool and a reinforcement ring.