Oscillating Tool Blade With Dual Orthogonal Mounting Configurations

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Solution Overview

Problem

Oscillating power tools have diverse proprietary accessory attachment mechanisms, making it difficult to create universal accessories that can be used across multiple brands, and existing universal mounting configurations often require more time to assemble due to closed ends preventing clamping member insertion.

Innovation Solution

A blade design with two mounting configurations, each comprising a central aperture and peripheral apertures, spaced orthogonally to accommodate different power tool mechanisms, allowing for efficient attachment to various oscillating power tools by reducing assembly time and increasing strength through slot width reduction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single universal mounting configuration is used on the blade, then the blade can be attached to multiple power tool brands, but the assembly time increases due to closed ends preventing clamping member insertion

Engineering Contradiction:
Improveuniversal attachment compatibilityVSAvoidassembly time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The blade is divided into two separate mounting configurations (first and second configurations) positioned at different locations on the blade body. Each configuration can be independently selected for attachment, allowing the user to choose the configuration that enables faster assembly with the specific power tool brand being used, thereby reducing overall assembly time while maintaining universal compatibility

Inventive Principle:
Principle #1Segmentation

2Strength

If the slot width is reduced to increase blade strength, then the blade becomes stronger, but the assembly process becomes more difficult

Engineering Contradiction:
Improveblade strengthVSAvoidassembly ease
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

By providing two mounting configurations, the patent allows selection of the configuration that offers the best compromise between strength and assembly ease for each specific application. The first configuration may have optimized slot dimensions for strength, while the second configuration may have slot dimensions optimized for easier assembly, and the user can select accordingly

Inventive Principle:
Principle #1Segmentation

3Reliability

If proprietary accessory attachment mechanisms are used by different power tool brands, then each brand can optimize for its specific tools, but universal accessory compatibility is reduced

Engineering Contradiction:
Improveattachment reliabilityVSAvoiduniversal compatibility
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The blade incorporates two different mounting configurations that are designed to be compatible with multiple power tool brands and their respective proprietary attachment mechanisms. This multi-functionality allows the same blade to be universally attached to different oscillating power tools from various manufacturers, achieving both brand-specific optimization and universal compatibility

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

Data Source

PatentEP3439818B1Blade for oscillating tools having dual mounting configurations
Publication Date: 2020.12.02 ROBERT BOSCH GMBH
  • EP3439818B1 patent drawingFigure 1~6
  • EP3439818B1 patent drawingFigure 7
  • EP3439818B1 patent drawingFigure 8~13

AI summary

A blade (102, 112) for oscillating tools includes lateral edges (114 A), a working edge (132, 164, 166) that extends in a first direction (154), and a mounting portion (116). The mounting portion (116) includes a first mounting configuration (118) that defines a first center (126) and a second mounting configuration (120) that defines a second center (148), where the first center (126) is spaced a distance (150, 180) away from the second center (148) in a direction (152, 154) that is substantially orthogonal (152) to the first direction (154) in which the working edge (132, 164, 166) extends or to a tangent of a center (126, 148) of curvature of the working edge (132, 164, 166). Both mounting configurations (118) are configured to drive the same working edge (132, 164, 166).