Shield Connector Assembly With Integrated Leaf Spring Grounding
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Solution Overview
Problem
The existing shield connector configuration is complex due to the separate provision of a wave spring washer, leading to an increased number of components and manufacturing costs.
Innovation Solution
A simplified shield connector configuration is achieved by integrating a shielding body with a crimping portion and a leaf spring portion, which is connected to an underlay ring and a folded shield member, allowing for stable connection to an external GND member without the need for a separate wave spring washer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wave spring washer is provided separately from the shielding body, then stable connection to the external GND member is achieved, but the number of components increases and manufacturing cost increases
Solution Approach 1:
The wave spring washer and shielding body are merged into a single integrated shielding body structure. The shielding body includes a crimping portion for connecting to the folded shield member and a shell body portion with a leaf spring portion that replaces the separate wave spring washer's grounding function. This integration reduces the number of components while maintaining stable electrical connection to the external GND member through the elastic leaf spring portion.
2Reliability
If the shielding body is formed as a cutting component, then connection functionality is achieved, but manufacturing cost increases
Solution Approach 1:
The shielding body is changed from a cutting component (formed by cutting and bending metal sheets) to a press-formed component (formed by stamping and pressing metal plates). The crimping portion is formed by pressing the metal plate into a tubular shape with crimped ends, and the leaf spring portion is formed by pressing elastic deformation zones into the shell body portion. This parameter change in manufacturing method significantly reduces production complexity and cost while maintaining all necessary connection and grounding functionalities.
3Strength
If the crimping portion is crimped tightly to secure the folded portion, then connection strength increases, but distortion of the shell body portion may occur
Solution Approach 1:
The metal plate forming the shielding body is designed with locally differentiated properties: the crimping portion has high strength and rigidity to securely hold the folded shield member through tight crimping, while the shell body portion incorporates elastic leaf spring portions with controlled flexibility for grounding. The press-forming process creates localized elastic deformation zones that allow the shell body to absorb crimping forces without permanent distortion, maintaining structural integrity while achieving strong connections.
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 proposed solution reduces the number of components, simplifies the configuration, and stabilizes the connection to the external GND member, while also suppressing distortion of the shell body portion and maintaining the integrity of the shield member.
Implementation Method 1
a shell body portion formed with at least one (particularly leaf) spring portion capable of being pressed into contact with the external GND member
Implementation Method 2
the connecting portion sandwiching the folded portion by the underlay ring and the connecting portion
Data Source
AI summary
A shielded cable includes a shielded cable body including a core wire, an insulation coating, a shield member and a covering member, an underlay ring for covering an outer periphery of the covering member on a tip part of the covering member, an outer periphery of the underlay ring being covered by a folded portion of the shield member, and a shielding body to be connected to the folded portion. The shielding body includes a crimping portion formed into a tubular shape by a metal plate material and to be crimped to sandwich the folded portion by the underlay ring and the crimping portion, and a shell body portion formed with a leaf spring portion capable of being pressed into contact with an external GND member.