Multifunctional seating unit
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Solution Overview
Problem
There is a need for a seating unit that can efficiently utilize reduced spaces in modern dwellings by offering multiple configurations while being structurally simple, easy to activate, aesthetically pleasing, and cost-effective, with conventional systems, and existing furniture designs do not adequately address this need.
Innovation Solution
A multifunctional seating unit with a frame featuring a crossed X-like arrangement of supports, a parallelogram mechanism for adjustable armrests and seat, and a collapsible back, allowing for easy conversion between armchair and chair configurations, optimizing space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a seating unit is designed with fixed structure to ensure stability and comfort, then reliability is improved, but adaptability deteriorates
Solution Approach 1:
The patent applies the dynamics principle by implementing a mechanical linkage system with pivoting legs and movable armrests that allow the seating unit to transition between different configurations (seated and reclined positions). This dynamic structure enables the furniture to adapt to multiple uses while maintaining stability in each position through the parallelogram mechanism and cross-bracing support.
Solution Approach 2:
The patent implements universality by designing a single seating unit that can serve multiple functions: it can be configured as a standard armchair for seated positions, transformed into a reclined position for relaxation, and potentially stacked with other units for storage. The multi-functional design eliminates the need for separate furniture pieces while maintaining reliability in each configuration.
2Adaptability or versatility
If a seating unit is designed with multiple configurations to increase adaptability, then adaptability is improved, but device complexity worsens
Solution Approach 1:
The patent applies the merging principle by combining multiple functional elements into a unified mechanical system. The leg support structure, armrest positioning, and backrest adjustment are integrated through a common parallelogram linkage mechanism, allowing all components to work together harmoniously. This reduces the number of separate mechanisms needed while achieving multiple configurations.
Solution Approach 2:
The patent implements segmentation by dividing the seating unit into distinct modular components: the frame structure, the parallelogram linkage mechanism, the armrest assemblies, and the backrest sections. This segmentation allows each component to be optimized independently while maintaining overall simplicity, making the complex multi-functional design more manageable and easier to manufacture.
3Area of stationary object
If a seating unit is designed to occupy minimal space when not in use, then area is improved, but ease of operation worsens
Solution Approach 1:
The patent applies the self-service principle by designing the transformation mechanism to be activated by the user's natural body movements. When the user sits or reclines, their weight and position automatically trigger the mechanical linkage to transition between configurations. This eliminates the need for complex manual operations while still achieving compact space utilization when the seating unit is pushed under tables or stacked.
Data Source
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Figure 5
AI summary
Multifunctional seating unit (1) comprising a frame (2) constituted by a pair of supports (3a, 3b) which are crossed in an X-like arrangement, each one of the supports (3a, 3b) defining a pair of first and second legs (4a, 4b, 5a, 5b), pivoted in an X-like arrangement, and a first plate and a second plate (6, 7), which are associated rotatably with a first armrest and a second armrest (16, 17); the frame (2) comprises a parallelogram mechanism adapted to allow the partial raising/lowering and the partial narrowing/widening of the first and second armrests (16, 17) and of a seat (35) which constitute the seating unit (1) and the partial narrowing/widening of the pair of first and second legs (4a, 4b, 5a, 5b); the seating unit (1) comprises a back (25) composed of a first case and a second case (26a, 26b) which are lateral and collapsible onto a fixed central support (27).