Chair Assembly with Single-Piece Drawstring Upholstery Securing
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Solution Overview
Problem
Existing chair assemblies lack a comprehensive solution for adjustable and comfortable upholstery that securely fits various chair configurations, compromising user support and aesthetics.
Innovation Solution
A chair assembly featuring a single-piece drawstring operably coupled with a cover member to securely wrap around chair components, providing adjustable support and aesthetics by utilizing a combination of flexible materials and modular design elements, including a back assembly with a lumbar adjustment system and a seat assembly with spring support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a cover member is wrapped about chair components to provide upholstery, then aesthetics and user comfort are improved, but the complexity of securing the cover member increases
Solution Approach 1:
The patent employs a drawstring mechanism that allows the cover member to be easily secured and removed. The drawstring passes through channels in the chair components and can be pulled to tighten the cover, then released for removal, enabling easy replacement and adjustment without complex fastening systems.
Solution Approach 2:
The cover member is designed as a flexible upholstery material that can be wrapped around various chair components including the seat and backrest. The flexibility of the cover member allows it to conform to different shapes and configurations while being secured by the drawstring mechanism.
2Ease of operation
If a single-piece drawstring is used to secure the cover member, then ease of operation is improved, but the reliability of secure fitting may worsen
Solution Approach 1:
The drawstring system provides dynamic adjustment capability, allowing the user to tighten or loosen the cover member as needed. The drawstring can be pulled to secure the cover tightly around the chair components, and can be easily released for adjustment or removal, providing both ease of operation and reliable securing when tightened.
3Adaptability or versatility
If the cover member is designed to fit various chair configurations, then adaptability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The cover member is designed as a universal upholstery solution that can fit various chair configurations including different seat and backrest shapes. The flexible material and drawstring securing system allow the same cover member design to be adapted to multiple chair types without requiring custom manufacturing for each configuration.
Data Source
AI summary
A chair component includes a first chair member adapted to support a seated user, a second chair member movable between a first position, wherein the second chair member is substantially coplanar with the first chair member, and a second position, wherein the second chair member is substantially parallel with the first chair member, a cover member wrapped about at least a portion of the first chair member and at least a portion of the second chair member, and a single-piece drawstring operably coupled with the cover member to draw the cover member about the at least a portion of the first chair member and the at least a portion of the second chair member when the second chair member is in the first position.