Electrical Distribution Center Heat-Resistant Socket Design
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Solution Overview
Problem
Electrical distribution centers that incorporate circuit protection devices like fuses and relays require high-temperature plastic housings, which are costly due to the need for uniform material usage across the entire housing, despite only a small portion experiencing high temperatures.
Innovation Solution
The use of a housing composed of a first material with a lower melting point, combined with a socket made of a second material with a higher melting point, which is used to isolate and protect the electrical/electronic components, allowing for the use of lower-cost materials like polypropylene for the housing while maintaining effective heat protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If high-temperature plastic housing material is used, then heat resistance is improved, but manufacturing cost increases
Solution Approach 1:
The housing is divided into two distinct portions: a first portion made of low-temperature plastic material and a second portion made of high-temperature plastic material. This segmentation allows each portion to be optimized for its specific thermal requirements, reducing overall material cost while maintaining necessary heat resistance where required.
Solution Approach 2:
Different material properties are applied to different portions of the housing based on local thermal requirements. The second portion that contacts or is near high-current electrical components uses high-temperature resistant material, while the first portion uses cheaper low-temperature plastic material, creating a non-uniform material distribution optimized for both performance and cost.
2Reliability
If homogeneous high-temperature material is used throughout the housing, then heat protection is ensured, but material cost increases
Solution Approach 1:
The housing structure is segmented into portions requiring heat protection and portions that do not, with only the necessary portions using high-temperature material. This reduces the total quantity of expensive high-temperature material required while maintaining adequate heat protection where needed.
Solution Approach 2:
High-temperature material is applied locally only to the second portion of the housing that requires heat protection, rather than uniformly throughout the entire housing. This localized application minimizes material usage while ensuring reliability in critical areas.
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
This solution enables the use of less expensive materials for electrical distribution center housings while effectively isolating and protecting the housing from heat generated by removable components, reducing overall costs without compromising performance.
Implementation Method 1
the socket being composed of a second, differing material having a second melting point higher than the predetermined temperature produced by the electrical/electronic component in operation, whereby the housing is effectively isolated and protected by the socket
Implementation Method 2
the component body is seated on the positive stop so that an air gap is provided between the component body and the housing
Data Source
AI summary
An electrical distribution center includes a housing composed of a first material having a first melting point, an electrical bus disposed in the housing, a removable electrical/electronic component electrically connected to the electrical bus and which produces a predetermined temperature in operation higher than the first melting point, an opening formed in the housing, and a socket mounted within the housing opening and physically supporting the electrical/electronic component. The socket is composed of a second, differing material having a second melting point higher than the predetermined temperature produced by the electrical/electronic component in operation, whereby the housing is effectively isolated and protected by the socket as the electrical/electronic component operates.