Electric Connector Shield Absorbing Positional Offset

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Solution Overview

Problem

Conventional connectors with shield members struggle to absorb positional offsets between connected objects due to the fixed engagement of shield members, making it difficult to maintain reliable electrical connections and effectively mitigate electromagnetic interference (EMI).

Innovation Solution

A connector design featuring a first housing with resiliently deformable terminals and shield members, and a second housing that can move relative to the first housing, allowing for positional adjustment while maintaining EMI protection through conductive shield portions that contact and deform with the shield members.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If shield members are engaged in predetermined positions to take EMI measures, then electromagnetic interference protection is improved, but the connector cannot absorb positional offsets between connected objects

Engineering Contradiction:
Improveelectromagnetic interference protectionVSAvoidability to absorb positional offset
Core Design Contradiction:
Object-affected harmful factorsVSAdaptability or versatility

Solution Approach 1:

The shield member is designed with a flexible portion that can dynamically change its engagement state. When the housing is inserted, the flexible portion elastically deforms to engage with the counterpart housing's shield member for EMI protection. When positional offset occurs, the flexible portion can deform to maintain engagement, allowing the connector to adapt to position changes while maintaining shielding effectiveness.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The engagement parameters of the shield member are made changeable through elastic deformation. The flexible portion can alter its position and engagement depth based on the relative position between connected housings, enabling the system to maintain both EMI protection and positional adaptability through parameter adjustment rather than fixed engagement.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If the second housing is fixed relative to the first housing, then EMI shielding is maintained, but it becomes difficult to move the second housing to accommodate positional offsets

Engineering Contradiction:
ImproveEMI shielding reliabilityVSAvoidmovability of second housing
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The shield member's flexible portion provides dynamic engagement that allows the second housing to move relative to the first housing while maintaining EMI shielding. The elastic deformation capability enables the shield members to remain engaged during movement, ensuring continuous protection while facilitating the necessary movability for accommodating positional offsets.

Inventive Principle:
Principle #15Dynamics

3Object-affected harmful factors

If shield members are rigidly engaged to ensure EMI protection, then electromagnetic interference measures are effective, but the connector cannot accommodate movement between housings

Engineering Contradiction:
Improveelectromagnetic interference protectionVSAvoidengagement stability of shield members
Core Design Contradiction:
Object-affected harmful factorsVSStability of the object's composition

Solution Approach 1:

The engagement parameters of the shield members are designed to be dynamically adjustable through elastic deformation. The flexible portion can change its engagement depth and position while maintaining continuous contact, allowing the system to preserve EMI protection effectiveness while accommodating movement and positional changes between connected housings.

Inventive Principle:
Principle #35Parameter changes

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

Enables the absorption of positional offsets between connected objects, enhancing connection reliability and effectively reducing electromagnetic wave interference, while minimizing component count and manufacturing costs.

Implementation Method 1

a plurality of first terminals which are held by the first housing and are formed so as to be resiliently deformed with a movement of the second housing; a plurality of second terminals which are held by the second housing and each of which is formed so as to be in contact with each of the first terminals

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

a shield conductive portion which is formed so as to be in contact with the first and second shield members when the second housing is mated with the first housing and to be resiliently deformed with a movement of the second housing

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS7651372B2Electric connector with shields on mating housings
Publication Date: 2010.01.26 IRISO ELECTRONICS CO LTD
  • US7651372B2 patent drawing
  • US7651372B2 patent drawing
  • US7651372B2 patent drawing

AI summary

The present invention provides a connector which can take an EMI measure for the first and second housings and can move the second housing with respect to the first housing. The connector comprises a plug which is provided so as to be movable with respect to the socket; a plurality of socket terminals which are resiliently deformed with a movement of the plug; a first socket side shield member which covers an outer circumference surface in the width direction of the socket; a plurality of plug terminals which are in contact with each of the socket terminals when the plug is mated with the socket; a plug side shield member which covers an outer circumference surface in the width direction of the plug; and first and second shield conductive portions which are in contact with each of the shield members and are resiliently deformed as the plug is moved.