Joint Apparatus With Opposing Flexures For Directional Deformation
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Solution Overview
Problem
Conventional joint apparatuses have limitations in increasing deformation degree of freedom in a preset direction, failing to provide sufficient flexibility and stability while maintaining motion in a specific direction.
Innovation Solution
A joint apparatus comprising a first and second fixed ring, an extension portion with a bar and end portion, and flexible first and second flexures that support the end portion from opposite sides, allowing for increased deformation while maintaining structural integrity and limiting motion in other directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional joint apparatus structures are used, then structural simplicity is maintained, but deformation degree of freedom in preset direction is limited
Solution Approach 1:
The joint apparatus is divided into multiple functional segments: fixed rings for anchoring, extension portions for linear movement, and flexures for controlled deformation. Each segment performs a specific function, allowing the overall structure to achieve high adaptability through modular composition rather than increasing individual component complexity
Solution Approach 2:
The patent introduces flexures that enable deformation in preset directions by adding dimensional flexibility to the otherwise rigid extension portions. This allows the structure to move from purely linear extension to multi-directional deformation capability, increasing adaptability without fundamentally complicating the core extension mechanism
2Adaptability or versatility
If flexible components are added to increase deformation freedom, then flexibility in preset direction is improved, but structural stability may deteriorate
Solution Approach 1:
Flexibility is localized to specific flexure components that are strategically positioned to provide deformation only in preset directions. The majority of the structure (fixed rings, extension portions) remains rigid to maintain overall structural stability, while local flexible zones enable controlled adaptability where needed
Solution Approach 2:
The joint apparatus transitions from a static rigid structure to a dynamic system where flexures enable controlled movement and deformation. The flexibility is not universal but dynamically activated only in preset directions through the flexure mechanisms, maintaining stability in other degrees of freedom
3Adaptability or versatility
If flexible components are added to increase deformation freedom, then deformation flexibility is improved, but device complexity increases
Solution Approach 1:
Each flexure component is designed to perform multiple functions: providing deformation freedom in preset directions, guiding motion paths, and potentially providing mechanical advantage. This multi-functionality reduces the need for additional separate components, offsetting the complexity increase from adding flexibility
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 joint apparatus enhances deformation flexibility in a preset direction while preventing unwanted motion, ensuring stability and efficient operation by utilizing flexible components that support and guide the end portion effectively.
Implementation Method 1
a first flexure extending from the second fixed ring in a direction toward the first fixed ring and supporting the end portion, and a second flexure extending from the second fixed ring in the direction toward the first fixed ring and supporting the end portion
Data Source
AI summary
A joint apparatus includes a first fixed ring, a second fixed ring arranged spaced apart from the first fixed ring, an extension portion comprising a bar extending from the first fixed ring in a direction toward the second fixed ring and an end portion disposed at an end portion of the bar in the direction toward the second fixed ring, a first flexure extending from the second fixed ring in a direction toward the first fixed ring and supporting the end portion, and a second flexure extending from the second fixed ring in the direction toward the first fixed ring and supporting the end portion, the second flexure being disposed at an opposite side to the first flexure with respect to the extension portion.