Spring-Cushioned Chair with Matrix Post Design for Comfort and Support
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Solution Overview
Problem
Existing chair designs lack innovative methods for supporting and cushioning that provide both unique appearance and enhanced functionality, particularly in terms of spring integration for comfort and structural support.
Innovation Solution
A chair design featuring a matrix of spring-supported vertical posts with a metal base, where a row of taller posts forms a backrest and shorter posts form a seat surface, with compression springs providing reliable support and removable cap structures for cushioning, allowing for adjustable and aesthetically customizable seating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional chair cushioning methods are used, then structural simplicity is maintained, but comfort and functionality are limited
Solution Approach 1:
The chair seat is divided into multiple independent vertical posts arranged in a matrix pattern, each post capable of independent compression and movement. This segmentation allows each post to independently respond to weight distribution, providing enhanced comfort through localized support while maintaining overall structural integrity.
Solution Approach 2:
The design nests multiple functional elements within the post structure: the post itself, compression springs within post cavities, removable caps, and cushioning materials. This nested arrangement provides complex functionality (comfort, support, adjustability) within a compact vertical profile, improving reliability without excessive horizontal complexity.
2Adaptability or versatility
If fixed chair design is used, then manufacturing simplicity is maintained, but adaptability and customization are limited
Solution Approach 1:
The chair incorporates dynamic elements including compression springs that allow posts to move vertically in response to load, and removable caps that enable users to adjust or customize the seat surface. This dynamic design provides adaptability and customization options while maintaining relatively simple manufacturing processes for each individual component.
Solution Approach 2:
The design allows for parameter changes through removable caps of different heights and configurations, and adjustable compression spring tension. Users can modify the effective seat height and firmness by changing caps or spring properties, providing versatility without requiring complex integrated adjustment mechanisms.
3Ease of operation
If uniform post heights are used, then structural simplicity is maintained, but functional differentiation (backrest vs seat) is limited
Solution Approach 1:
The post matrix incorporates asymmetric height distribution where posts in the rear row are taller to form a backrest, while front posts are shorter to form the seat surface. This asymmetric arrangement clearly differentiates functional zones (seating vs. back support) while maintaining the same basic post-and-spring construction methodology throughout, balancing functional differentiation with manufacturing simplicity.
Solution Approach 2:
Different regions of the post matrix are assigned different post heights based on local functional requirements: taller posts at the rear for backrest support, shorter posts at the front for seat surface. This local quality variation provides appropriate support characteristics for each zone while using the same fundamental construction approach across all posts.
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 design offers improved comfort and support through spring integration, allowing for adjustable seating height and aesthetic customization, enhancing both functionality and appearance.
Implementation Method 1
a portion of the posts forming the seat surface of the chair are compound posts having an upper portion engaging the outside diameter of the tubes, the upper portion supported on a compression spring
Data Source
AI summary
A chair has a metal base, a matrix of metal tubes having a common outside and an inside diameter, welded orthogonal to the metal base, extending vertically, and a matrix of posts matching the matrix of metal tubes, the posts bored for a portion of a length of each post, with each post engaged over one of the metal tubes. The chair is characterized in that one row of posts along one edge of the metal base comprises posts of a height greater than other posts, and forms a backrest for the chair, and in that the remaining matrix of posts, of a lesser height than the posts forming the backrest, are of a common height, and form a seat surface for the chair.