Triangular Backing Pad Protrusion for Orbital Sander Access

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Solution Overview

Problem

Conventional triangular backing pads for hand-held or hand-guided orbital sanders or polishers struggle to reach narrow, cramped, tight, twisty, and crooked spaces due to their design, which often obstructs access with the sander's housing in the way.

Innovation Solution

A backing pad with an essentially triangular form and a protrusion extending beyond the triangular region, allowing the protrusion to reach into tight spaces, combined with a resilient support structure and flexible yielding layer for attachment to the sander, enabling detailed sanding and polishing in confined areas.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a conventional triangular backing pad is used, then the sander or polisher can maintain structural stability and attachment stability, but it cannot reach narrow, cramped, tight, twisty and crooked spaces due to the housing being in the way

Engineering Contradiction:

Improveaccess to narrow spacesVSAvoidbacking pad structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The backing pad is segmented into a main triangular body and one or more protrusions that extend beyond the triangular region. This segmentation allows the protrusions to reach into narrow spaces while the main body maintains structural stability and attaches to the sander housing.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The backing pad design adds protrusions that extend in additional spatial dimensions beyond the standard triangular footprint. This dimensional extension allows the sanding surface to reach into tight spaces that would otherwise be inaccessible due to the housing obstruction.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Ease of operation

If the backing pad design is modified to reach narrow spaces, then access to confined areas is improved, but the attachment stability and structural integrity may be compromised

Engineering Contradiction:

Improveaccess to narrow spacesVSAvoidattachment stability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The backing pad is divided into a main triangular body that maintains attachment stability and protrusions that provide access to narrow spaces. The segmentation allows each part to fulfill its specific function without compromising the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different parts of the backing pad have different functional qualities: the main triangular body provides structural stability and secure attachment to the sander, while the protrusions provide extended reach into narrow spaces. Each region is optimized for its specific purpose.

Inventive Principle:

Principle #3Local quality

3Adaptability or versatility

If a protrusion is added to the triangular backing pad, then access to low and deep areas is facilitated, but the manufacturing complexity increases

Engineering Contradiction:

Improveaccess to various spacesVSAvoidbacking pad production

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The backing pad can be manufactured as separate components (main body and protrusions) that are subsequently assembled, or as an integrated piece with molded protrusions. This segmentation flexibility allows manufacturers to choose the most efficient production method.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The protrusion design can be adapted to various backing pad sizes and shapes while maintaining the same basic functional principle. This universality allows the design to be manufactured using standard processes with minimal tooling changes.

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 modified backing pad design allows for more sophisticated and detailed sanding and polishing in narrow spaces by protruding beyond the sander's housing, facilitating access to low and deep areas while maintaining attachment stability and orbital movement.

Implementation Method 1

a resilient support structure and flexible yielding layer for attachment to the sander

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS11518000B2Backing pad,orbital sander or polisher with such a backing pad, and sheet-like sanding or polishing member for releasable attachment to such a backing pad

Publication Date: 2022.12.06 VALENTINI GUIDO (I) (IT)

AI summary

The invention refers to a backing pad (100) for use with a hand-held or hand-guided orbital sander (10) or polisher. The backing pad (100) has a planar extension and an essentially triangular form comprising a triangular region (102), with a top surface for releasable attachment of the backing pad (100) to the sander (10) or polisher and with a bottom surface for releasable attachment of a sheet-like sanding or polishing member (132) to the backing pad (100). In order to provide for a possibility to sand or polish surfaces within narrow, cramped, tight, twisty and crooked spaces with a sander (10) or polisher having an essentially triangular backing pad (100), it is suggested that the backing pad (100) comprises at least at one of the three corners (104) of the triangular region (102) a protrusion (108) extending in the plane of the planar extension of the backing pad (100) and projecting laterally beyond the triangular region (102).