Adjustable Step System for Stair Mobility Support
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Solution Overview
Problem
Existing stair-assistance systems are complex, difficult to install, and fixed in place, making them unsuitable for persons with mobility issues and limiting their usability in normal stair scenarios.
Innovation Solution
An adjustable step system comprising blocks with a height less than the stair riser, connected to a rail that allows lateral movement along the stair width, enabling the blocks to be positioned as needed for support and then moved out of the way when not in use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed stair-assistance systems are installed, then support for persons with mobility issues is provided, but the system cannot be moved and limits normal stair usage
Solution Approach 1:
The step assistance device is designed to be movable along the stair flight rather than fixed in place. The block can be positioned at different locations along the riser and secured when needed, then moved to different positions when not needed, transforming the system from static to dynamic to resolve the contradiction between providing reliable support and maintaining adaptability for normal usage
2Reliability
If complex stair-assistance systems are used, then support functionality is achieved, but installation and usage become difficult
Solution Approach 1:
The assistance system is divided into simple, discrete components: a block with a connector that attaches to individual risers. This segmentation allows for easy installation without complex assembly procedures and simple operation where the block can be independently positioned and secured on each riser, resolving the contradiction between providing reliable support functionality and maintaining ease of operation
Solution Approach 2:
A connector serves as an intermediary element between the block and the riser, providing a simple mechanical attachment mechanism. This intermediary component simplifies both installation and operation by eliminating the need for complex fastening systems while maintaining reliable support functionality
3Ease of operation
If blocks are positioned on treads to assist users, then vertical step height is reduced, but the blocks occupy space and may interfere with normal stair use
Solution Approach 1:
The blocks are designed to be movable along the riser and can be positioned only when needed for assistance. When not in use, the blocks can be moved to the sides or removed entirely, dynamically adjusting the space occupation to resolve the contradiction between providing ease of operation through height reduction and minimizing interference with normal stair use
Solution Approach 2:
The block can be completely removed from the stair when not needed for assistance, extracting the assistance function from the permanent stair structure. This allows the stair to return to its normal unobstructed state while maintaining the capability to provide assistance when required
Data Source
AI summary
An adjustable step system for assisting a person walking up or down a flight of stairs. The system includes adjustable steps that can be mounted to the stairs of the flight of stairs. The adjustable steps effectively reduce the required vertical height of a step that a person is required to take for each stair. The adjustable steps are also movable and can be positioned at a desired location along the width of the stairs when not in use.