Portable inflatable sofa
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Solution Overview
Problem
Existing foldable seats with steel tube structures are bulky, uncomfortable, and unstable, while conventional inflatable sofas are large and unsuitable for children, lacking stability and attractiveness.
Innovation Solution
A portable inflatable sofa made of drop-stitch air cushion material with a foldable design, incorporating a connection strap, memory elastic sheets, and airtight layers for stability and comfort, featuring a decorative strip and adjustable connection straps for user customization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a steel tube structure is used for foldable seats, then structural strength is improved, but the folded length and storage space occupied increase
Solution Approach 1:
The patent uses an inflatable structure filled with air to provide structural support instead of steel tubes. The air pressure within the inflatable body creates rigidity and strength, allowing the seat to maintain its shape and support weight without requiring long steel tube frameworks, thus reducing folded length and storage space.
Solution Approach 2:
The patent employs a flexible inflatable shell made of fabric layers (including waterproof fabric, air tight fabric, and heat storage fabric) to create the seat structure. This flexible shell can be deflated for compact storage and inflated to provide structural integrity, eliminating the need for rigid steel tube supports that occupy significant space when folded.
2Ease of manufacture
If Oxford cloth is used for bearing in foldable seats, then ease of manufacture is improved, but comfort level deteriorates
Solution Approach 1:
The patent uses a composite fabric structure consisting of multiple layers: waterproof fabric layer, air tight fabric layer, and heat storage fabric layer. This composite material provides both manufacturing feasibility and enhanced comfort by offering thermal insulation, breathability, and a softer surface compared to single-layer Oxford cloth, while maintaining ease of manufacture through layer-by-layer construction.
3Volume of moving object
If a large-sized inflatable sofa is used, then volume and comfort are improved, but stability deteriorates
Solution Approach 1:
The patent applies different fabric properties to different parts of the inflatable sofa structure. The seat bottom uses dense, airtight fabric for stability and support, while the backrest and armrests use breathable, flexible fabric for comfort. This localized differentiation allows the sofa to maintain stability in load-bearing areas while providing comfort in contact areas, even at large sizes.
Solution Approach 2:
The multi-layer composite fabric structure provides both volume expansion and stability. The air tight fabric layer maintains internal pressure for structural integrity, the waterproof layer prevents moisture-related instability, and the heat storage layer provides thermal stability. This composite construction allows the sofa to be large and comfortable while remaining stable during use.
4Ease of manufacture
If conventional inflatable material is used, then ease of manufacture is improved, but airtightness and comfort deteriorate
Solution Approach 1:
The patent employs a multi-layer composite fabric where each layer serves a specific function: the waterproof fabric layer provides water resistance, the air tight fabric layer ensures airtightness through specialized coating or lamination, and the heat storage fabric layer provides thermal insulation. This composite structure achieves superior airtightness and comfort while remaining manufacturable through established layer-by-layer fabrication processes.
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 sofa provides a stable, comfortable, and compact seating solution suitable for various users, maintaining shape integrity and ease of storage, with adjustable features for user comfort and attractive appearance.
Implementation Method 1
a memory elastic sheet is arranged at a joint between the armrest portion and the seat cushion portion, so that after the armrest portion is folded, the armrest portion is in a state of being relatively perpendicular to the seat cushion portion
Implementation Method 2
the sofa body is formed by folding an integrally-cut structure... made of a drop-stitch air cushion material
Data Source
AI summary
A portable inflatable sofa is provided. The portable inflatable sofa comprises a sofa body made of a drop-stitch air cushion material, wherein the sofa body is formed by folding a one-piece cut structure; the sofa body is divided by folds into a backrest portion, a seat cushion portion, and armrest portions on two sides; and the backrest portion and the armrest portions can be folded up to be in a state relatively perpendicular to the seat cushion portion. The inflatable sofa further comprises a connection strap, and the backrest portion is connected to the armrest portions on the two sides by means of the connection strap.