Chair Backrest with Elastic Segmented Strips for Adaptive Body Support
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional chairs have insufficient backrest support due to a rigid design that fails to conform to different body shapes, leading to discomfort and potential spinal issues, and restrict arm movement.
Innovation Solution
A chair design featuring a backrest with an elastic bending element and supporting strips, and a waist supporting structure with a pivoting plate, allowing for adjustable support and comfort by accommodating various body curves and enabling free arm movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the backrest is designed as a rigid plate, then the structure is simple and stable, but it cannot deform to fit different body shapes, resulting in insufficient supporting effect and discomfort
Solution Approach 1:
The backrest is divided into multiple independent support bars instead of a single rigid plate. Each bar can independently deform and adapt to different body contours, providing customized support while maintaining structural simplicity through modular design
Solution Approach 2:
The support bars are designed with elastic properties allowing them to dynamically deform and adapt to different body shapes and weights. This dynamic characteristic enables the backrest to conform to various ergonomics requirements without complex adjustment mechanisms
2Ease of operation
If the top part of the backrest has side edges aligned with the bottom part, then the structure is stable, but it interferes with arm extension and limits user motion
Solution Approach 1:
The top part of the backrest is extracted or removed entirely, leaving only the necessary support bars. This eliminates the interference with arm extension while maintaining the stabilizing function through the strategic placement and configuration of the remaining support structure
3Reliability
If the backrest is positioned close to the seat, then the supporting effect is improved, but it creates a space that cannot fully support the rear waist
Solution Approach 1:
The backrest support is segmented into multiple bars positioned at different heights and angles, with specific bars designed to extend into the gap region to provide targeted waist support while maintaining overall structural integrity
Solution Approach 2:
Certain support bars are designed with specific local characteristics (different lengths, angles, or positions) to target specific body regions, particularly the rear waist area, providing localized support where needed while maintaining overall back support
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 chair provides enhanced back and waist support, increasing comfort and reducing the risk of spinal diseases by conforming to individual body shapes and allowing for adjustable support and free arm movement.
Implementation Method 1
The bending element is elastic and bendable to deform
Data Source
AI summary
A chair has a seat, a backrest, a lift structure, a back supporting structure, and a waist supporting structure. The backrest is deposited behind the seat. The lift structure is deposited on the backrest. The back supporting structure has a bending element and multiple supporting strips. The bending element is connected with the backrest and the lift structure, and is elastic and bendable to deform. The supporting strips are deposited on the bending element at spaced intervals from a top to a bottom of the bending element. The waist supporting structure is deposited in front of the back supporting structure. The waist supporting structure has two pivoting bases and a supporting plate. The pivoting bases are deposited on the seat. The supporting plate is pivoted between the two pivoting bases, abuts the back supporting structure, and selectively abuts the backrest.