Low-Profile Sofa Sleeper Head Rail for Frame Compatibility
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Solution Overview
Problem
Traditional sofa sleeper mechanisms conflict with modern sofa frames due to their design, extending into the back cavity or interfering with the breast rail when unfolded, limiting their compatibility with both traditional and modern designs.
Innovation Solution
A folding sofa sleeper mechanism with a low-profile head rail that is pivotally coupled to a support linkage system and actuating linkage system, allowing it to be configured within both traditional and modern sofa frames without extending into the back cavity or interfering with the breast rail, enabling compatibility with any style of sofa sleeper frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional folding sofa sleeper mechanism is used, then it can be disposed in a rear-biased orientation, but it conflicts with the front rail when unfolded and extends into the back cavity
Solution Approach 1:
The patent inverts the traditional rear-biased orientation by positioning the folding mechanism in a forward-biased orientation near the front rail. This inversion allows the mechanism to unfold away from the back cavity and breast rail, eliminating conflicts while maintaining compatibility with traditional sofa frames.
Solution Approach 2:
The patent changes the orientation parameter of the folding mechanism from rear-biased to forward-biased. This parameter change fundamentally alters the spatial relationship between the mechanism and sofa frame components, resolving the conflict between adaptability and harmful factors.
2Adaptability or versatility
If a deep-seated sofa frame is used to extend seat cushion area, then seating comfort is improved, but the folding mechanism conflicts with frame components
Solution Approach 1:
The patent creates a universal folding mechanism design that can adapt to both traditional and modern deep-seated sofa frames. By implementing a forward-biased orientation with a low-profile head rail, the mechanism achieves multi-functionality and compatibility across different frame styles without generating harmful conflicts.
Solution Approach 2:
The patent applies parameter changes to the folding mechanism's orientation and head rail profile to enable compatibility with modern deep-seated frames. These parameter adjustments allow the mechanism to function properly in both traditional and contemporary sofa designs, resolving the adaptability conflict.
3Adaptability or versatility
If the head rail is made low-profile, then compatibility with various frame styles is improved, but the structural support must be maintained
Solution Approach 1:
The patent applies local quality by creating a low-profile head rail with optimized structural characteristics at specific locations. The head rail maintains reduced height for compatibility while incorporating localized structural reinforcements to preserve necessary support capabilities despite the reduced overall profile.
Data Source
AI summary
This invention is directed to a sofa sleeper mechanism having a head section, a main middle section, a secondary middle section and a foot section. The head section has a head end and an end opposing the head end. The foot section has a foot end and an end opposing the foot end. The opposing end of the head section is pivotally connected to the main middle section, which is pivotally connected to the secondary middle section, which is pivotally connected to the opposing end of the foot section. The sofa sleeper mechanism is movable from a stowed position to an extended position, wherein, in the stowed position, the uppermost edge of the head end does not extend substantially above the folded foot section.