Foldable Tool Stand Structure for Stable Saw Operation

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Solution Overview

Problem

Existing foldable tool stands, particularly for stationary tools like miter saws and table saws, lack stability during operation, leading to instability and inconvenience due to movement under user force.

Innovation Solution

A foldable stand design with pivotable legs, adjustable support rods, and a locking mechanism that allows for multiple configurations, including a miter saw, table saw, and transport configurations, providing enhanced stability and ease of use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the saw stand is made from different parts which are not permanently fixed to each other to allow for transportable and collapsible design, then the stand becomes portable and collapsible, but the stand becomes unstable when the saw is in operation

Engineering Contradiction:
Improveportability and collapsibilityVSAvoidstability during operation
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The stand employs dynamically adjustable legs that can be positioned at multiple angles and locked into place. The legs are not permanently fixed but can be adjusted and secured to provide stability during operation, then collapsed for transport. This dynamic adjustability allows the stand to transition between portable and stable states.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The stand changes its structural parameters by adjusting the angle and position of the legs relative to the tabletop. By varying these geometric parameters, the stand achieves different configurations: a stable, wide-based configuration during operation and a compact, collapsed configuration for transport.

Inventive Principle:
Principle #35Parameter changes

2Ease of operation

If the stand is designed to be collapsible and transportable at the same time, then the stand becomes movable, but the stand tends to move in the force direction when force is exerted on the saw

Engineering Contradiction:
ImprovemovabilityVSAvoidstability under force
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The stand is divided into separate segments (tabletop, legs, support members) that can be independently positioned and locked. This segmentation allows each component to be optimized for both mobility and stability, with locking mechanisms securing the segments in stable configurations during operation while allowing easy reconfiguration for transport.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces locking mechanisms and support members as intermediary elements between the movable legs and the tabletop. These intermediaries provide the necessary stability during operation by securing the legs in fixed positions, while allowing the overall structure to remain reconfigurable for transport.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Adaptability or versatility

If the stand uses non-permanently fixed parts to allow for collapsible design, then the stand becomes transportable, but the stand lacks stability when the saw is in operation

Engineering Contradiction:
ImprovecollapsibilityVSAvoidstructural stability
Core Design Contradiction:
Adaptability or versatilityVSStrength

Solution Approach 1:

The stand transitions from a static, permanently fixed structure to a dynamic, adjustable structure. The legs and support members can be moved and repositioned, then locked into stable configurations during operation. This dynamic design maintains structural stability when needed while enabling collapsibility for transport.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The stand employs locking mechanisms that pre-position and secure the adjustable legs in stable configurations before the saw operation begins. This preliminary action of locking the legs in place ensures structural stability is established in advance, preventing movement during operation while maintaining the ability to collapse for transport.

Inventive Principle:
Principle #10Preliminary action

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 ensures stable operation of stationary tools by preventing unwanted movement, facilitating ergonomic handling, and enabling versatile configuration for different tasks and transport needs.

Implementation Method 1

the frame can be placed on a floor and comprises a roller arrangement for rolling the frame on the floor

Methodology Applied
Scientific EffectRolling: Roller

Implementation Method 2

a handle frame part, which is movably mounted with respect to the base frame part between a transport position provided for transporting the machine tool and an operating position provided for operating the machine tool by means of at least one bearing

Methodology Applied
Scientific EffectPivoting: Hinge

Data Source

PatentEP4414138B1Stand for tools with support structure
Publication Date: 2025.12.17 EINHELL GERMANY AG
  • EP4414138B1 patent drawingFigure 1
  • EP4414138B1 patent drawingFigure 2A
  • EP4414138B1 patent drawingFigure 2B

AI summary

The present disclosure describes a stand for tools comprising a table assembly providing a support surface for the tool to be placed a plurality of legs having first ends coupled to the table assembly; a base frame coupled to second ends of the plurality of legs and a support rod releasably coupled to the base frame and/or one or more of the plurality of legs.