Collective Walking Aid With Child Seating and Stackable Storage

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Solution Overview

Problem

Existing walking assistance devices for the elderly and disabled are underutilized due to their bulkiness and strong medical connotation, limiting their use to private settings and shortening travel duration, and there is a need for a device that is socially acceptable and versatile for various environments.

Innovation Solution

A collective mobility assistance device with a rolling frame, including adult and child seats, foldable design, and stackable features, designed to be used in public spaces, reducing bulkiness and medical connotation while providing versatile mobility and rest functions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional walkers are designed with medical features and support structures, then safety and support functionality are improved, but bulkiness and medical connotation increase leading to reduced social acceptance

Engineering Contradiction:
Improvesafety and support functionalityVSAvoidsocial acceptance and usability in public
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The device combines multiple functions into a single unit: it serves as both a walker for elderly/disabled users and a stroller for children. The frame structure supports adult seating while also accommodating child seats, allowing the same device to be used in diverse social contexts without stigmatization

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

Solution Approach 2:

The patent merges the walker function with stroller function by integrating child seats into the walker frame. The rear wheels and frame structure serve both the adult user and attached child seats, creating a unified device that eliminates the need for separate medical equipment

Inventive Principle:
Principle #5Merging (Combining)

2Stability of the object's composition

If walkers are designed for medical use with robust support structures, then stability and support are improved, but device bulkiness increases reducing portability and ease of storage

Engineering Contradiction:
Improvestability and supportVSAvoiddevice bulkiness
Core Design Contradiction:
Stability of the object's compositionVSVolume of moving object

Solution Approach 1:

The device is segmented into modular components: the frame structure, adult seat, child seats, and wheels can be independently configured. The child seats are detachable and can be positioned at different locations on the frame, allowing the device to be compact when child seats are removed while maintaining stability when needed

Inventive Principle:
Principle #1Segmentation

3Device complexity

If conventional walkers are designed with fixed medical configurations, then structural simplicity is maintained, but adaptability to different users and environments is reduced

Engineering Contradiction:
Improvestructural simplicityVSAvoidusability for different populations and environments
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The device incorporates dynamic adjustability through detachable child seats that can be added or removed based on user needs. The frame allows for configuration changes where child seats can be attached to different parts of the structure, enabling the same basic design to adapt to various family compositions and environmental requirements

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP4125769B1Collective mobility aid
Publication Date: 2026.01.28 PROJET E HE
  • EP4125769B1 patent drawingFigure 1
  • EP4125769B1 patent drawingFigure 2
  • EP4125769B1 patent drawingFigure 3a~3b

AI summary

The invention relates to a collective walking aid (1), comprising a wheeled frame (10) having a set of wheels (11), and at least one handle (12), the aid being characterised in that it further comprises a first seat (20) for an adult oriented towards the rear of the aid, in relation to the walking direction, and a second seat (30) for a child, oriented towards the front of the aid.