Nested Coil Bending Structure for Axial Rigidity and Flexibility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing bending structures for joint function parts in robots are complicated due to the engagement of multiple disc elements, which complicates the structure while stabilizing the bending operation.
Innovation Solution
A simplified bending structure featuring an outer coiled part and an inner coiled part, where the inner coiled part fits between the coils of the outer coiled part, maintaining axial rigidity and flexibility during bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple disc elements are engaged with each other to stabilize bending operation, then bending operation stability is improved, but device complexity increases
Solution Approach 1:
The inner coiled part is nested within the outer coiled part, with the inner coiled part fitting between adjacent coils of the outer coiled part. This nested configuration provides bending stability through the interaction between the two coiled parts while maintaining a compact and simplified overall structure, avoiding the need for multiple separate disc elements.
Solution Approach 2:
The patent combines the functions of multiple disc elements into a single integrated bending structure consisting of outer and inner coiled parts. The two coiled parts work together as a unified system to provide bending operation stability, eliminating the need for separate engaged disc elements and reducing structural complexity.
2Device complexity
If the bending structure uses a compact design, then device complexity is reduced, but axial rigidity may be compromised
Solution Approach 1:
The inner coiled part is nested within the outer coiled part, creating a compact design. The interaction between the inner and outer coils provides axial rigidity, as the inner coiled part fits between adjacent coils of the outer coiled part and works together to resist axial compression forces.
Solution Approach 2:
The bending structure uses a composite configuration of outer and inner coiled parts made from wire materials. This composite structure combines the two coiled parts to achieve both compactness and axial rigidity, as the interaction between the different coiled components provides enhanced mechanical strength.
3Ease of operation
If gaps are reduced on the inner side of bending, then bending flexibility is improved, but axial length may change
Solution Approach 1:
The inner coiled part is nested within the outer coiled part, allowing the gaps of the outer coiled part to be reduced on the inner side of bending without significantly changing the overall axial length. The nested configuration enables the inner coiled part to accommodate the gap variations while maintaining a relatively constant axial length.
Solution Approach 2:
The patent utilizes parameter changes in the gap dimensions of the outer coiled part during bending operations. The gaps are reduced on the inner side of bending to improve flexibility, while the nested inner coiled part compensates for these changes to maintain a relatively constant axial length.
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 structure achieves a balance between simplicity and stability, ensuring rigidity in the axial direction while allowing sufficient flexibility for bending operations, and maintaining a constant length and moving amount during bending.
Implementation Method 1
the coils of the inner coiled part are provided so as to correspond to the gaps of the outer coiled part and fit between the adjacent coils while being in contact with the adjacent coils of the outer coiled part
Data Source
AI summary
Provided is a bending structure and a joint function part, capable of ensuring sufficient flexibility and rigidity in an axial direction. The bending structure is provided with an outer coiled part formed of a wire wound in a coiled shape and an inner coiled part formed of a wire wound in a coiled shape and arranged in the outer coiled part, wherein the outer coiled part has a plurality of gaps to distance adjacent coils, and coils of the inner coiled part are provided so as to correspond to the gaps of the outer coiled part and fit between the adjacent coils while being in contact with the adjacent coils of the outer coiled part.