Electrical Connector Retention Insert Segmentation
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Solution Overview
Problem
Existing electrical connectors face challenges in manufacturing cost and electrical performance due to deformation of mating contacts during insertion and the need for larger retention segments, which can degrade signal integrity and cause electrical discontinuities.
Innovation Solution
The design includes a housing with side openings for retention inserts with fingers that engage with electrical contacts, providing secure retention without degrading electrical characteristics, and allowing for cost-effective manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the retention segments of the mating contacts are made large enough to securely engage the housing, then the retention strength is improved, but the electrical characteristics of the mating contacts are degraded
Solution Approach 1:
The retention function is segmented from the mating contact by introducing a separate retention insert. The retention insert includes multiple fingers that can be independently configured to engage the housing, while the mating contact retains its optimized electrical characteristics without large retention segments.
Solution Approach 2:
The retention insert acts as an intermediary component between the mating contact and the housing. It provides the retention function that would otherwise require large segments of the mating contact, thereby protecting the electrical characteristics of the mating contact while ensuring secure engagement with the housing.
2Strength
If the housing is molded around the mating contacts to hold them in place, then the retention strength is improved, but the manufacturing cost increases
Solution Approach 1:
The housing structure is segmented to include separate side openings rather than fully enclosing the mating contacts. This allows the retention insert to be independently installed through the side openings, simplifying the molding process and reducing manufacturing costs compared to fully enclosing the contacts.
Solution Approach 2:
The retention insert is designed to be pre-installed into the housing through the side openings before the mating contacts are inserted. This preliminary action allows the housing to be molded with simpler structures and enables easier assembly of the complete connector.
3Ease of operation
If the mating contacts are inserted through holes in the housing, then the ease of assembly is improved, but the mating contacts may be inadvertently bent during insertion
Solution Approach 1:
The retention insert is preliminarily installed into the housing with its fingers positioned to engage and support the mating contacts. When the mating contacts are inserted through the holes, the fingers provide immediate support to prevent bending, ensuring both easy assembly and precise contact alignment.
Solution Approach 2:
The retention fingers are positioned in advance to provide protective support during the insertion of the mating contacts. This beforehand cushioning prevents the contacts from being inadvertently bent by absorbing or distributing the insertion forces before damage can occur.
Data Source
AI summary
An electrical connector includes a housing extending from a mating face to an opposite face, and first and second side walls that extend between the mating face and the opposite face. The housing has a contact cavity that includes opposing sides. The first side wall includes a side opening that extends through the first side wall into communication with the contact cavity. The contact cavity is accessible through the mating face for receiving a mating connector therein. Electrical contacts are held by the housing and arranged in opposing rows that extend along the opposing sides of the contact cavity. A retention insert is received within the side opening. The retention insert includes fingers that extend into the contact cavity and engage in physical contact with corresponding electrical contacts of one of the rows of the electrical contacts to hold the corresponding electrical contacts within the contact cavity.