Cantilevered Space Frame Walker for Uneven Terrain Stability

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Solution Overview

Problem

Existing walkers are often complex, costly, and fail to provide adequate side-to-side stability, erect posture, and flexibility in handhold placement, as well as insufficient suspension for mobility on rough surfaces and integration of accessories like child carriers or sun shades.

Innovation Solution

A space frame walker with a U-shaped lower and upper portion, cantilevered design for shock absorption, adjustable handle sections, and the option to attach skis or wheels for varied terrain, allowing for improved stability, mobility, and accessory integration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a rigid frame is used, then structural stability is improved, but mobility over uneven surfaces deteriorates

Engineering Contradiction:
Improvestructural stabilityVSAvoidmobility over uneven surfaces
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The frame incorporates a cantilevered upper portion that can dynamically deflect and absorb shocks when encountering uneven surfaces, transitioning from a rigid structure to a more adaptive system that maintains stability while improving mobility over rough terrain

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The cantilevered design allows the frame to change its structural parameters (deflection, shock absorption capability) in response to terrain conditions, enabling the walker to adapt to varying surface conditions while maintaining overall structural integrity

Inventive Principle:
Principle #35Parameter changes

2Device complexity

If a single hand-hold location is provided, then device complexity is reduced, but ease of operation deteriorates

Engineering Contradiction:
Improvedevice complexityVSAvoiderect posture
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The upper portion is divided into multiple segments including a base portion and a cantilevered upper portion with handle sections, allowing different hand-hold locations at various heights to accommodate users in different postures without significantly increasing overall device complexity

Inventive Principle:
Principle #1Segmentation

3Adaptability or versatility

If accessories are integrated into the frame, then adaptability is improved, but device complexity increases

Engineering Contradiction:
Improveaccessory integrationVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The frame is designed with universal attachment capabilities that allow multiple types of accessories (child carriers, flexible seats, sun shades) to be integrated into the same structure, making the walker multi-functional without requiring separate specialized designs for each accessory type

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 walker provides enhanced stability, mobility on uneven surfaces, and flexibility in handhold placement, enabling users to maintain an erect posture while accommodating accessories like child carriers and sun shades, thus improving user experience and accessibility.

Implementation Method 1

the front end of the upper portion may deflect, to some degree, upwardly or downwardly so as to provide a spring-like action

Methodology Applied
Scientific EffectSpring-like action: Spring

Implementation Method 2

the cantilevered upper portion will act like a shock absorber to reduce the effect of the impact on the hands and arms of a user

Methodology Applied
Scientific EffectShock absorption: Damping

Data Source

PatentUS9375380B2Mobility assistance device
Publication Date: 2016.06.28 ROWANWOOD IP
  • US9375380B2 patent drawing
  • US9375380B2 patent drawing
  • US9375380B2 patent drawing

AI summary

A walker frame is provided which has a generally open space frame and has handle portions that are cantilevered.