Zero gravity and zero wall sofa frame
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Solution Overview
Problem
Existing zero gravity and zero wall sofa frames lack the ability for the foot rest and seat frame to move separately, resulting in movements that do not align with human body habits, thus compromising user experience.
Innovation Solution
A zero gravity and zero wall sofa frame design featuring two independent drive mechanisms: a first drive mechanism for the seat frame and a second drive mechanism for the foot rest assembly, allowing them to act independently during position transitions, with additional features like guide rails and damping elements for stable and comfortable movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single drive mechanism is used to drive the seat frame and foot rest simultaneously, then the structure is simple, but the foot rest and seat frame cannot move separately, resulting in movement that does not align with human body habits
Solution Approach 1:
The patent divides the drive system into two independent drive mechanisms: a first drive mechanism for driving the seat frame and a second drive mechanism for driving the foot rest assembly. This segmentation allows each component to move independently according to human body movement habits, resolving the contradiction between operational ease and structural complexity by organizing the system into modular, functionally independent units.
2Adaptability or versatility
If the foot rest and seat frame move simultaneously through a single drive mechanism, then the device complexity is low, but the user experience is compromised due to inability to act separately
Solution Approach 1:
The patent implements independent movement capability by segmenting the drive system into two separate mechanisms that can operate autonomously. The first drive mechanism controls the seat frame while the second drive mechanism controls the foot rest assembly, enabling adaptable and versatile movement patterns that match human body habits without requiring a single complex synchronized system.
Solution Approach 2:
The patent introduces dynamic control by allowing the two drive mechanisms to operate independently based on different conditions and sequences. This dynamic capability enables the system to adapt its movement pattern - for example, extending the foot rest before moving the seat frame, or moving them simultaneously - thereby achieving versatility in movement behavior while maintaining manageable device complexity through modular design.
3Ease of manufacture
If a single drive mechanism drives both seat frame and foot rest, then manufacturing is simpler, but the telescoping of foot rest is synchronized with seat frame movement, preventing separate action
Solution Approach 1:
The patent resolves the manufacturing versus operational capability contradiction by segmenting the drive system into two independently manufacturable units. Each drive mechanism can be manufactured and tested separately, simplifying the manufacturing process while enabling the foot rest and seat frame to act separately during operation. The modular segmented design allows for standardized components that can be produced efficiently while achieving the desired independent movement capability.
Data Source
AI summary
A zero gravity and zero wall sofa frame, comprising a base, a seat frame, a first drive mechanism, a backrest assembly, a foot rest assembly, a push rod and a second drive mechanism, wherein the seat frame is movably arranged on the base, the base and the seat frame are hinged with the backrest assembly, the seat frame and the push rod are hinged with the foot rest assembly, and the second drive mechanism is connected with the push rod to drive the push rod to move back and forth relative to the seat frame. Since the sofa frame is provided with the first drive mechanism and the second drive mechanism, the foot rest assembly and the seat frame can act respectively during the state transition of the sofa frame to make the movement of the sofa consistent with the body movement habit to provide a better user experience.