Armrest pad assembly and chair armrest
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Solution Overview
Problem
Conventional chair armrests provide only a single support plane, which inadequately supports the forearm and elbow when a user bends their elbow, leading to fatigue during activities like using a mobile phone or reading.
Innovation Solution
An armrest pad assembly with a flexible material featuring a first and second support section connected by a bendable section, which folds upward and downward about a predetermined position, and a rotation locking mechanism to adjust the support surfaces, providing two inclined support surfaces to alleviate fatigue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single support plane is used in conventional armrests, then the structure is simple, but the forearm and elbow cannot be effectively supported when bending the elbow, causing fatigue
Solution Approach 1:
The armrest pad is divided into multiple support sections (first support section, second support section, etc.) with bendable sections between them. Each support section can be independently positioned to support different parts of the arm (forearm, elbow) at different angles, transforming a single-plane structure into a multi-section adaptable structure without excessive complexity
Solution Approach 2:
The armrest incorporates bendable sections that allow the support sections to be dynamically adjusted to different positions and angles. This enables the armrest to adapt to various arm positions (straight, bent at different angles) while maintaining structural integrity, resolving the contradiction between adaptability and complexity
2Adaptability or versatility
If the armrest pad is made flexible to enable folding adjustment, then the support sections can be positioned to support forearm and elbow, but the structural stability may be compromised
Solution Approach 1:
The armrest is segmented into rigid support sections connected by bendable sections. The rigid support sections provide structural stability when supporting the arm, while the bendable sections enable folding adjustment. This segmentation allows both stability and adaptability to coexist
Solution Approach 2:
Different parts of the armrest have different properties: support sections are made rigid for stability, while connection sections are made bendable for adjustability. This local differentiation of material properties resolves the contradiction between overall structural stability and local flexibility needed for folding adjustment
Data Source
AI summary
An armrest pad assembly includes: an armrest pad, wherein the armrest pad includes a first support section, a bendable section, and a second support section that are successively connected along a lengthwise direction of the armrest pad; wherein the armrest pad is internally provided with a first inner frame and a second inner frame, the first inner frame being fixed to the first support section, and the second inner frame being fixed to the second support section; wherein the first inner frame and the second inner frame are configured to be connected to an armrest frame of a chair, such that during upward and downward folding adjustment of the armrest frame of the chair, the first inner frame and the second inner frame drive the first support section and the second support section to be folded upward and downward about the bendable section to a predetermined position.