Mobile Backrest Seat for Different User Heights
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Solution Overview
Problem
Conventional seats, such as armchairs and sofas, are designed to meet the specific comfort requirements of individual users based on their build, making them uncomfortable and potentially causing incorrect sitting positions and related issues for users of different heights.
Innovation Solution
A seat with a mobile backrest featuring vertically adjustable cushions, comprising a kidney-rest and an upper portion that can be moved relative to each other, allowing the seat to adapt to varying user heights by changing the backrest and sitting surface height, thereby accommodating individuals of different builds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the seat is designed with fixed dimensions to meet the comfort requirements of a specific user, then the comfort for that individual user is improved, but the adaptability to users of different builds deteriorates
Solution Approach 1:
The backrest is designed with mobile/adjustable components that allow it to change position and configuration dynamically. The backrest can be moved between different angular positions and heights, transforming from a static structure to a dynamic one that adapts to different user requirements.
Solution Approach 2:
The backrest is divided into multiple independent segments or components that can be adjusted separately. This segmentation allows different parts of the backrest to be positioned independently to accommodate variations in user height and body shape.
2Ease of operation
If the seat dimensions are customized for a specific user's build, then the sitting position correctness for that user is improved, but the ease of manufacture deteriorates
Solution Approach 1:
The seat is designed as a universal piece of furniture that can serve multiple users with different builds through its adjustable backrest. Rather than manufacturing custom-seats for each user, a single multi-functional design with adjustment capabilities achieves the same result.
Solution Approach 2:
The backrest allows changes in geometric parameters such as angle, height, and position. These parameter adjustments enable the same physical structure to provide correct sitting positions for users of varying heights and builds without requiring custom manufacturing.
Data Source
Figure 1~2
Figure 3a~4
AI summary
It is provided a seat (1) with mobile backrest adapted to define a sitting base for at least one person and comprising a supporting structure (2) suitable to support said person in said sitting position; at least one vertical cushion (5) placed upon said supporting structure (2) and adapted to define a rest for at least part of the back and including a kidney-rest (6) and an upper portion (7) that can be moved relative to each other so as to selectively define an included position and a position of mutual overlapping.