Cable Joint Structure With Motion Promotors for Thermal Expansion
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Solution Overview
Problem
Existing cable joints face issues with thermal expansion during high-current loads, leading to damage of the resin and shell due to thermal expansion, which can cause local failure and catastrophic consequences.
Innovation Solution
Incorporating a motion promotor, such as compressible foam elements or gas bubbles, within the resin or shell to allow for expansion and contraction of cable ends, decoupling them from the shell and distributing mechanical stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If cable ends are rigidly fixed in the shell, then structural stability is improved, but thermal expansion damage occurs during high-current loads
Solution Approach 1:
The patent introduces motion promotors that enable dynamic adjustment of cable end positions within the shell. These motion promotors allow the cable ends to expand and contract thermally while maintaining connection integrity, transforming the rigid fixed structure into a dynamic adaptive system that responds to thermal conditions.
Solution Approach 2:
The patent changes the mechanical parameters of the cable joint system by introducing elements with different thermal expansion characteristics. The motion promotors have specific mechanical properties that allow them to accommodate thermal expansion differences between cable ends and the shell, resolving the contradiction through parameter optimization.
2Reliability
If cable ends are allowed to move freely, then thermal expansion is accommodated, but mechanical strength and connection stability deteriorate
Solution Approach 1:
The patent employs motion promotors that function as flexible mechanical elements between the rigid shell and cable ends. These elements provide controlled flexibility, allowing thermal expansion while maintaining sufficient mechanical strength through their specific material properties and geometric design.
Solution Approach 2:
The cable joint system uses composite construction combining rigid shell material, curable resin, and motion promotor materials with different mechanical properties. This composite approach allows the system to simultaneously achieve rigidity for strength and flexibility for thermal accommodation.
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 motion promotor effectively absorbs thermal expansion, reducing the likelihood of damage to the resin and shell, maintaining structural integrity and enhancing the cable joint's durability under heavy loads.
Implementation Method 1
a curable resin is provided in the hollow interior space of the shell, around the body and the connector
Implementation Method 2
at least one motion promotor, for allowing the first and/or second cable end to expand and/or contract with respect to the shell after curing of said resin
Data Source
AI summary
A cable joint is disclosed for mutually connecting a first cable end and a second cable end. The cable joint comprises a shell defining a hollow interior space, into which the first cable end and the second cable end can extend in order to be mutually connected within the hollow interior space. The hollow interior space is fillable with a curable resin; and wherein the cable joint further comprises at least one motion promotor configured to allow the first and/or second cable end to expand and/or contract with respect to the shell after curing of said resin.