Adjustable Sofa with Telescopic Extension Pad for Expandable Seating
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Solution Overview
Problem
Existing sofas have fixed seat cushions that do not extend, making it inconvenient for users to place and support their legs, limiting user experience.
Innovation Solution
An adjustable sofa with a U-shaped frame, extension pad, and length adjustment component driven by a servo motor and reducer, allowing the seat cushion to expand or contract, and an angle adjustment component for the back cushion to enhance user comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the seat cushion is fixed in space, then the sofa structure is simple and stable, but the external space of the seat cushion cannot be extended, making it inconvenient for users to place and support their legs
Solution Approach 1:
The seat cushion is divided into a fixed portion and an extendable portion. The extendable portion can be pulled out independently to provide additional leg support space, while the main cushion remains fixed. This segmentation allows the cushion to adapt to different user needs without requiring complete structural redesign.
Solution Approach 2:
The seat cushion transitions from a completely fixed state to a dynamically adjustable state. The extendable portion can be pulled out and retracted as needed, allowing the cushion length to change based on user requirements. This dynamic adjustment capability resolves the contradiction between fixed structure stability and space adaptability.
2Ease of operation
If the seat cushion is made extendable, then users can place and support their legs comfortably, but the structure becomes more complex
Solution Approach 1:
The extendable portion is extracted as a separate component from the main seat cushion. This extracted portion can be independently manipulated to provide leg support when needed, while the main cushion structure remains simple and unchanged. The extraction principle allows added functionality without proportionally increasing overall complexity.
Solution Approach 2:
A connection mechanism acts as an intermediary between the fixed cushion and the extendable portion. This intermediary component enables smooth extension and retraction while maintaining structural integrity. It mediates between the simplicity of the fixed structure and the functionality of the extendable portion, reducing the perceived complexity for users.
3Adaptability or versatility
If a length adjustment component is added to extend and contract the extension pad, then the sofa becomes suitable for various positions, but the device complexity increases
Solution Approach 1:
The length adjustment component serves multiple functions: it extends the cushion for leg support, retracts it for compact storage, and potentially adjusts to different lengths for various user heights. This multi-functionality justifies the added complexity by providing versatile positioning capabilities in a single integrated mechanism.
Solution Approach 2:
The adjustment mechanism is designed to be easily operated by users without requiring complex controls or assistance. The telescopic design allows intuitive pull-out and push-in operations, making the system self-service friendly. This simplicity in operation offsets the mechanical complexity of the adjustment mechanism.
Data Source
AI summary
The present application provides an adjustable sofa which includes a U-shaped sofa bottom frame and a sofa armrest fixed at one side of the bottom frame. A rear upper of the U-shaped sofa bottom frame is fixed with a rear frame, an inner upper of the sofa armrest is provided with a seat cushion, a support pad is provided between an inner lower of the sofa armrest and an upper of the U-shape sofa bottom frame, an extension pad is provided between the seat cushion and the support pad for expanding a width of the sofa, a length adjustment component for extending and contracting the extension pad is fixed on an opposite surface of the extension pad and the U-shaped sofa bottom frame. The length adjustment component can extend the extension pad to extend a space area of the sofa seat cushion area.