Generic Lead Frame Contact Pattern Selection for TCA Connectors
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Solution Overview
Problem
Conventional Advanced TCA connectors are labor-intensive, costly, and prone to errors due to the individual manufacturing and loading of signal and power contacts, which can lead to improper insertion and require bending, making the assembly process slow and error-prone.
Innovation Solution
A method involving generic lead frames on a common carrier strip, where subsets of contacts are removed to form specific patterns, which are then loaded into a housing with interchangeable dielectric carriers and covers, allowing for efficient formation of signal and power contact modules with standardized spacing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If contacts are individually manufactured and loaded into the connector housing, then each contact can be precisely positioned, but the assembly process becomes labor-intensive, slow, and error-prone
Solution Approach 1:
Multiple individual contacts are merged into a single lead frame structure where contacts are pre-positioned and interconnected. This allows the entire contact array to be loaded as one unit rather than individually, maintaining positioning accuracy while dramatically improving assembly speed and reducing labor intensity
Solution Approach 2:
Contacts are pre-positioned and pre-assembled on the lead frame before being loaded into the connector housing. The lead frame serves as a pre-assembled carrier that holds contacts in their correct positions, eliminating the need for individual positioning during final assembly
2Adaptability or versatility
If contacts are individually manufactured with different lengths and spacings, then specific connector performance requirements can be met, but improper insertion and errors increase
Solution Approach 1:
A universal lead frame structure is designed that can accommodate multiple contact patterns and configurations. The same lead frame carrier can be used for different contact arrangements by selectively removing or retaining specific contacts, providing both customization and reliability through a standardized loading interface
Solution Approach 2:
Different regions of the lead frame are configured with specific contact patterns tailored to local requirements (signal zone, power zone, user-defined zone). Each zone has contacts with specific lengths and spacings appropriate for its function, while the overall structure maintains uniform loading characteristics
3Adaptability or versatility
If numerous loose contacts are handled individually during assembly, then flexible configuration is possible, but manufacturing costs and labor intensity increase
Solution Approach 1:
Multiple loose contacts are merged onto a single lead frame structure that serves as an integrated carrier. This reduces the number of separate handling operations from one per contact to one per lead frame assembly, dramatically simplifying manufacturing while preserving configuration flexibility through selective contact removal
Data Source
AI summary
A method of manufacturing an electrical connector comprises steps of providing a series of generic lead frames each having an array of contacts arranged in a common generic pattern, removing from one of the generic lead frames a first subset of the contacts to form a first pattern of contacts having a first spaced-apart relationship, removing from another of the generic lead frames a second subset of the contacts to form a second pattern of contacts having a different second spaced-apart relationship, wherein the first and second patterns are selectively obtained from the generic pattern, and loading the first and second patterns of contacts into a housing.