Extendable Postural Support Cushion for Adaptable Wheelchair Seating
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Solution Overview
Problem
Generic cushioning in wheelchairs lacks adaptability to users' specific dimensions, leading to discomfort and limited support, while custom solutions are expensive and unsuitable for growing children.
Innovation Solution
An extendable cushion assembly with a movable base and cushion, featuring transverse slits for adjustment, support portions for body parts, and attachment means for customizable fit, allowing the cushion to extend or retract to accommodate varying user dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a generic one piece cushion is used, then the device complexity is reduced and manufacturing cost is lowered, but the adaptability to users' specific dimensions deteriorates leading to discomfort and limited support
Solution Approach 1:
The cushion is divided into multiple segments or sections that can be independently adjusted. This segmentation allows each portion of the cushion to be customized to fit different body dimensions and contours, resolving the contradiction by maintaining relative structural simplicity while achieving high adaptability through modular design.
Solution Approach 2:
The cushion incorporates adjustable and reconfigurable elements that allow users to modify the cushion's shape, size, and support characteristics dynamically. This dynamic capability enables the same cushion structure to adapt to various users and changing needs without requiring complex custom manufacturing for each individual.
2Adaptability or versatility
If custom cushion arrangements are provided, then the adaptability to specific user dimensions is improved, but the manufacturing cost and device complexity increase significantly
Solution Approach 1:
The cushion design incorporates universal adjustment mechanisms that allow a single cushion model to serve multiple users with different dimensions and requirements. The adjustable components enable one cushion structure to perform the function of multiple custom cushions, reducing both complexity and cost while maintaining high adaptability.
Solution Approach 2:
The cushion allows for adjustment of key parameters such as length, width, height, and support firmness through mechanical or material-based adjustment mechanisms. By enabling parameter changes in a standardized cushion design, the system achieves custom-fit adaptability without requiring custom manufacturing for each parameter combination.
3Adaptability or versatility
If custom cushion arrangements are created for children, then the adaptability to their current dimensions is improved, but the reliability over time deteriorates as the child grows and the custom cushion becomes unsuitable
Solution Approach 1:
The cushion incorporates dynamic adjustment capabilities that allow it to grow and adapt with the child over time. Adjustable elements can be reconfigured as the child's dimensions change, ensuring the cushion maintains its suitability and support effectiveness throughout the child's growth period, thereby improving long-term reliability.
Solution Approach 2:
The cushion is designed with adjustment mechanisms and structural features that anticipate future growth needs. By incorporating preliminary adjustability and modularity, the cushion can be reconfigured in advance to accommodate growth, ensuring continuous suitability without requiring replacement as the child develops.
Data Source
AI summary
An extendable cushion assembly includes a cushion that is movable between an extended state and a retracted state, and a base upon which the cushion is removably coupled. The base is movable between an extended state and a retracted state. When the cushion is coupled to the base and when the base adopts the extended state or the retracted state the cushion is configured to adopt the extended or the retracted state respectively.