Electrical Connector Retainer for Solder Reflow Stability
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Solution Overview
Problem
Existing electrical connectors face challenges in securely retaining insulators during high-temperature solder reflow processes, particularly due to the risk of damage from external impacts and inadequate retention mechanisms.
Innovation Solution
The electrical connector design features a retainer with multiple offset posts and a crossbeam, securely positioned between the third insulator and the rear tails of the first contacts, which extends through the first and second insulators and the shielding plate, providing enhanced retention and protection against separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional offset post configurations are used to retain insulators, then the device complexity is reduced, but the reliability of retention during high-temperature solder reflow processes deteriorates due to risk of separation under external impacts
Solution Approach 1:
The retainer is divided into multiple functional segments: a body portion with multiple offset posts (at least three) arranged in different directions, and a crossbeam connecting the posts. This segmentation allows each post to provide retention in specific directions, collectively achieving three-dimensional retention stability without requiring an overly complex single-structure solution.
Solution Approach 2:
The retainer structure transitions from traditional single-plane or two-post configurations to a three-dimensional arrangement with offset posts positioned in multiple directions and a crossbeam forming a spatial framework. This dimensional expansion enables the retainer to resist separation forces from multiple angles simultaneously, significantly improving retention reliability during solder reflow processes.
2Reliability
If a retainer with multiple offset posts and crossbeam is used to prevent insulator separation, then the retention reliability is improved, but the manufacturing precision requirements increase due to the complex multi-component structure
Solution Approach 1:
The retainer integrates multiple offset posts and a crossbeam into a single unified component rather than assembling separate parts. This merging approach eliminates the need for precise alignment between multiple discrete components during manufacturing, reducing manufacturing precision requirements while maintaining the three-dimensional retention structure's effectiveness.
Solution Approach 2:
The retainer structure serves multiple functions simultaneously: the offset posts provide retention in different directions, the crossbeam provides additional structural support and spacing, and the integrated design provides both mechanical retention and positioning functions in a single component, reducing the need for multiple precision-critical parts.
3Reliability
If the retainer is positioned between the third insulator and rear tails of first contacts, then the retention effectiveness is improved, but the ease of manufacture deteriorates due to the complex assembly process involving multiple insulators and contacts
Solution Approach 1:
The retainer is designed with pre-positioned offset posts and crossbeam structure that automatically align with and engage the insulators and contacts during assembly. The preliminary configuration of the retainer's geometric features ensures proper positioning without requiring complex alignment procedures or additional fastening steps, improving ease of manufacture while maintaining retention effectiveness.
Data Source
AI summary
An electrical connector includes: a first insulator and a row of first contacts retained to the first insulator, each first contact having a rear tail; a second insulator and a row of second contacts retained to the second insulator, each second contact having a rear tail, the rear tails of the second contacts being arranged in front of the rear tails of the first contacts; a shielding plate assembled between the first insulator and the second insulator; a third insulator molded to an assembly of the first insulator, the second insulator, and the shielding plate; and a retainer extending through the first insulator, the second insulator, and the shielding plate, wherein the retainer is disposed between the third insulator and the rear tails of the first contacts.