Foldable Briefcase Chair Structure for Stability and Document Storage
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Solution Overview
Problem
Existing foldable seating solutions lack stability and multifunctionality, often being complex to assemble and limited to a single function as a seat without providing additional benefits for document transport and storage.
Innovation Solution
A foldable folder-chair design that integrates a prismatic body with flat faces and bellows, featuring transverse fold lines and cutouts to secure the seat surface, along with a detachable folder extension that can be fixed using complementary tabs, Velcro, or brackets, allowing for both chair and folder functions in a single, compact unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a simple foldable chair structure is used, then ease of manufacture and portability are improved, but stability is worsened
Solution Approach 1:
The chair structure is divided into modular components including a seat, backrest, and legs that can be independently folded and connected. This segmentation allows each component to be optimized for both stability and foldability, resolving the contradiction between simple construction and structural stability.
Solution Approach 2:
The chair components are designed to nest within each other when folded, with the seat folding into the backrest and legs folding into the seat structure. This nesting arrangement maintains compact portability while preserving structural integrity through interlocking design elements.
2Device complexity
If a single-function chair is used, then device complexity is reduced, but adaptability is worsened
Solution Approach 1:
The chair incorporates multiple functions within a single structure: it serves as a seating device, a document holder with integrated pockets, and a portable briefcase when folded. This multi-functionality approach adds adaptability without significantly increasing overall device complexity through shared structural components.
Solution Approach 2:
The patent merges the chair structure with document storage compartments and pockets integrated into the seat and backrest. This combining of functions allows the single device to serve multiple purposes - seating and document carrying - thereby improving adaptability while maintaining relatively simple construction.
3Ease of manufacture
If connections between seat extensions and bellows faces are simplified, then ease of manufacture is improved, but reliability is worsened
Solution Approach 1:
The connection between seat extensions and bellows faces utilizes self-aligning features and self-latching mechanisms that automatically ensure proper engagement during assembly. This self-service approach maintains ease of manufacture while improving reliability by reducing assembly errors and ensuring consistent connection strength.
Data Source
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AI summary
Transportable folder-chair formed by two foldable/unfoldable parts, one of which is rectangular prismatic with two flat faces and two faces in the form of bellows, with extensions for forming the seat surface in an unfolded position, or position of use of the chair, which continue in flaps with two cutouts, and a set of flaps and fold lines, from which a folder is formed in the fold thereof. The transportable folder-chair also has a strap fixed by two ends for transporting the unit in the folded position thereof.