Linkage Rod With Bend Limitation For Hexapod Precision
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Solution Overview
Problem
Existing technologies face challenges in achieving a lightweight, miniaturized, and simply manufactured hexapod system with high precision due to difficulties in combining high rigidity and strength with flexible mechanisms, which are prone to breakage under heavy loads or severe environments.
Innovation Solution
A linkage rod incorporating a limited-displacement flexible mechanism with a flexible plate-like member and bend limitation sections, allowing for controlled bending and integration using technologies like injection molding or MEMS, to enhance structural robustness and facilitate weight reduction and miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high rigidity and strength are used to achieve precise positioning, then positioning precision is improved, but device complexity and manufacturing difficulty increase due to the need for multiple parts
Solution Approach 1:
The patent combines multiple functional parts into a single integrated linkage rod structure. The rigid rod and flexible mechanism are merged into one component that can be manufactured as a single piece using injection molding or MEMS technology, eliminating the need for multiple separate parts while maintaining positioning precision.
Solution Approach 2:
The patent introduces a flexible mechanism with plate-like members that can bend within limited displacement ranges. This flexible structure replaces traditional rigid joint mechanisms, enabling precise positioning through controlled elastic deformation rather than through complex mechanical assemblies.
2Device complexity
If flexible strips are employed for a linkage rod, then device complexity is reduced, but reliability deteriorates due to difficulty in preventing breakage under heavy load or severe environments
Solution Approach 1:
The patent employs composite material construction where the linkage rod integrates both rigid and flexible regions within a single component. The rigid portions provide structural strength and load-bearing capacity, while the flexible plate-like sections provide controlled movement. This composite approach maintains reliability under heavy loads while preserving structural simplicity.
3Strength
If multiple parts are assembled to achieve high rigidity and strength, then structural robustness is improved, but weight and size increase
Solution Approach 1:
The patent merges multiple parts into a single integrated linkage rod that can be manufactured as one piece using injection molding or MEMS technology. This integration eliminates the need for multiple separate components, significantly reducing weight and size while maintaining structural robustness through the optimized monolithic design.
4Measurement precision
If traditional electromechanical arrangements are used for each rod, then positioning precision is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent replaces traditional electromechanical positioning mechanisms with a flexible mechanism based on plate-like members that bend within controlled limits. This flexible approach achieves positioning precision through elastic deformation rather than complex mechanical actuation, dramatically simplifying manufacturing while maintaining accuracy.
Solution Approach 2:
The patent utilizes changes in the physical parameters of the flexible plate-like members, such as thickness, material properties, and geometric configuration, to control the bending behavior and achieve precise positioning. This parameter-based control eliminates the need for complex electromechanical arrangements while maintaining positioning precision.
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 solution enables precise positioning and structural robustness, allowing for predictable and repeatable motions across a wide temperature range, with enhanced resistance to corrosion and mechanical stress, while maintaining precision and simplicity in production.
Implementation Method 1
a flexible member shaped like a plate; and at least one bend limitation section which is arranged in parallel with the flexible member so that the bend limitation section limits a bend of the flexible member
Data Source
AI summary
A linkage rod including a limited-displacement flexible mechanism has structural robustness and allows easy reduction in weight and size, simple production and easy operation. The linkage rod including at least one limited-displacement flexible mechanism, wherein the limited-displacement flexible mechanism comprises at least one limited-displacement flexible joint which comprises: a flexible member; and at least one bend limitation section which is arranged in parallel with the flexible member so that the bend limitation section limits a bend of the flexible member.