Stepped Wiring Terminal for EMI Shielding

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Solution Overview

Problem

Conventional wiring terminals in electronic devices are cumbersome for assembly and maintenance, lack electromagnetic shielding, and are not suitable for connecting multiple functional modules without exposing leads, leading to aesthetic issues and electromagnetic interference.

Innovation Solution

A wiring terminal with a base attached to a housing, featuring stepped conductor portions that allow leads to be positioned between the housing and electronic modules for electromagnetic interference shielding, and a simple, easy-to-install design that hides leads, facilitating connections between multiple modules.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If conventional wiring terminals are used to connect power modules and functional modules, then electrical connection can be established, but the leads are exposed which causes aesthetic issues and electromagnetic interference

Engineering Contradiction:
Improveelectromagnetic interferenceVSAvoidwiring terminal structure
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The lead is nested within the housing structure by positioning it between the housing wall and the electronic module. The stepped arrangement of conductor portions allows the lead to be concealed inside the housing, eliminating external exposure while maintaining electrical connection functionality.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The housing structure serves as an intermediary element that shields the lead from external electromagnetic interference. By positioning the lead between the housing wall and the module, the housing acts as a shielding barrier without requiring additional specialized shielding components.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of manufacture

If leads are exposed in conventional wiring terminals, then electrical connection is simple, but aesthetic appearance deteriorates and electromagnetic interference increases

Engineering Contradiction:
Improveassembly simplicityVSAvoidaesthetic appearance
Core Design Contradiction:
Ease of manufactureVSShape

Solution Approach 1:

The lead is nested within the housing structure by positioning it between the housing wall and the electronic module. The stepped arrangement of conductor portions allows the lead to be concealed inside the housing, eliminating external exposure while maintaining electrical connection functionality.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Reliability

If conventional wiring terminals are used, then electrical connection between modules is achieved, but assembly and maintenance become cumbersome

Engineering Contradiction:
Improveelectrical connection reliabilityVSAvoidassembly and maintenance ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The wiring terminal is segmented into distinct conductor portions (first and second conductor portions) with different spatial arrangements. This segmentation allows for modular assembly where each portion can be independently positioned and connected, simplifying the overall assembly process while maintaining reliable electrical connections.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The conductor portions are arranged in a stepped manner along the direction extending from the housing wall to the module, creating a three-dimensional configuration. This dimensional arrangement allows leads to be routed through the housing interior space, simplifying external connections while maintaining reliable electrical contact.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP3667829A1Wiring terminal and associated electronic device
Publication Date: 2020.06.17 NOKIA SOLUTIONS & NETWORKS OY
  • EP3667829A1 patent drawingFigure 1~2
  • EP3667829A1 patent drawingFigure 3A
  • EP3667829A1 patent drawingFigure 3B~4A

AI summary

Embodiments of the present disclosure provide a wiring terminal and an associated electronic device. The wiring terminal comprises a base attached to a portion of a wall of a housing of an electronic device; a first conductor portion coupled to the base and adapted to be electrically coupled to an electronic module of the electronic device; a second conductor portion coupled to the base and electrically coupled to the first conductor portion, the second conductor portion adapted to be electrically connected to a second conductor portion of a same size terminal via a lead; wherein the first conductor portion and the second conductor portion are arranged in a stepped manner such that the second conductor portion is more adjacent to the portion of the wall than the first conductor portion.