Connector Inner Shell Rearward Connection Portion

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Solution Overview

Problem

Existing connectors face issues with poor electrical connections between the inner shell and mating shell due to interference from the mating housing, which can lead to flaws and adherents on the connection surface, causing unreliable connections.

Innovation Solution

A connector design featuring a connection portion on the inner shell that extends from the upper side portion and is positioned rearward of the front end, allowing direct electrical connection with the case while preventing interference with the mating connector, ensuring the mating shell is protected by the mating outer housing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the connection portion is positioned at the front end of the inner shell, then the electrical connection between inner shell and case is achieved, but the mating housing interferes with the connection portion causing poor electrical connection

Engineering Contradiction:

Improveelectrical connection reliabilityVSAvoidinterference from mating housing

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The connection portion is repositioned from the front end to the rearward position on the inner shell, changing its spatial location to eliminate interference from the mating housing while maintaining electrical connection functionality. This dimensional repositioning resolves the conflict between achieving electrical connection and avoiding interference.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Object-affected harmful factors

If the connection portion is repositioned rearward on the inner shell, then interference with mating housing is avoided, but the direct electrical connection with case may be compromised

Engineering Contradiction:

Improveinterference from mating housingVSAvoidelectrical connection reliability

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The electrical connection path is segmented into two parts: the connection portion on the inner shell that interfaces with the mating connector, and the connected portion that provides direct electrical connection to the case. This segmentation allows the connection portion to be repositioned rearward to avoid interference while the connected portion maintains direct case connection, resolving both concerns simultaneously.

Inventive Principle:

Principle #1Segmentation

3Reliability

If the connection portion extends from the front end of the inner shell, then electrical connection is established, but flaws and adherents on the connection surface cause poor connection

Engineering Contradiction:

Improveelectrical connection reliabilityVSAvoidflaws and adherents on connection surface

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The connection portion is extracted from the front end position and relocated to a rearward position on the inner shell. This extraction removes the connection surface from the interference zone where mating housing contact could cause flaws and adherents, thereby eliminating the source of connection degradation while preserving electrical connectivity.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS8979585B2Connector

Publication Date: 2015.03.17 JAPAN AVIATION ELECTRONICS IND LTD

AI summary

A connector comprises a contact, an inner housing, an inner shell, an outer housing and an outer shell. The inner housing holds the contact. The inner shell covers, at least in part, the inner housing. The outer housing holds the inner shell. The outer shell covers, at least in part, the outer housing. The inner shell has a connected portion and a connection portion. The connection portion extends from the connected portion and is directly connected with an attachment object when the connector is attached to the attachment object. A boundary between the connected portion and the connection portion is positioned apart from and rearward of the front end of the connector.