Receptacle Connector Stuffer Bar Contact Alignment
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Solution Overview
Problem
Conventional receptacle connectors in transceiver assemblies face issues with mechanical stability during assembly and mating, leading to inadequate electrical connections due to non-coplanar solder tails and contact float, as well as rearward displacement of contacts during module mating.
Innovation Solution
The proposed receptacle connector features contacts with retention sections and mating sections, housed in a structure with a stuffer bar that engages the contacts to maintain alignment and stability, ensuring coplanarity of contact tails and preventing rearward movement, thereby enhancing mechanical and electrical stability during assembly and mating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional receptacle connectors are used without retention sections, then the structure is simpler, but the contacts become unstable and non-coplanar during assembly and mating
Solution Approach 1:
The contact is divided into distinct functional sections: a mating section for electrical connection, a retention section for mechanical support, and a solder tail section for mounting. This segmentation allows each section to perform its specific function optimally, with the retention section providing stable support to ensure coplanarity of solder tails during assembly and mating operations.
Solution Approach 2:
The retention section is designed to pre-position and stabilize the contact before the actual mating operation occurs. By providing preliminary mechanical support and alignment, the retention section ensures that the contact maintains its coplanar position throughout the assembly process, preventing misalignment before mating even begins.
2Ease of manufacture
If contacts are allowed to float upward in the housing, then assembly is easier, but electrical connections become inadequate due to non-coplanar solder tails
Solution Approach 1:
The retention section is designed to counteract the floating tendency of contacts upward in the housing. By providing downward retention force through the retention section, the system prevents the harmful floating action before it can compromise the coplanarity and electrical connection quality, while still allowing easy assembly.
3Ease of operation
If contacts are forced rearward during mating, then mating with pluggable module occurs, but contacts move out of position within the housing
Solution Approach 1:
The retention section pre-positions the contact in the correct location within the housing before mating occurs. This preliminary positioning ensures that when mating forces are applied, the contact remains stable and does not move out of position, maintaining both ease of mating and positional stability.
Solution Approach 2:
The retention section acts as an intermediary element between the contact and the housing, providing mechanical support and stability. This intermediary structure allows the contact to withstand mating forces without moving out of position, facilitating easy mating while maintaining contact stability throughout the operation.
Data Source
AI summary
A transceiver assembly includes a receptacle guide frame configured to be mounted to a host circuit board, where the receptacle guide frame has a front being open to an interior space, and where the receptacle guide frame is configured to receive a pluggable module through the front. A receptacle connector is received within the interior space of the receptacle guide frame at a rear of the receptacle guide frame. The receptacle connector includes contacts having contact tails configured to be mounted to a circuit board. The contacts have retention sections positioned at a predetermined location relative to the contact tails, and the contacts have mating sections configured for mating with a mating connector. A housing holds the contacts and has a front and a rear with a cavity at the front being configured to receive the mating connector. The housing has a shelf at the rear. A stuffer bar is separately provided from the housing and securely coupled to the rear of the housing. The stuffer bar is received within the retention sections of the contacts and engages the contacts to hold the contacts against the shelf such that the contact tails are aligned with one another.