Shield Connector Housing That Prevents Fixing Barrel Springback
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Solution Overview
Problem
The crimping process for fixing a second conductor to a first conductor in shield connectors can lead to springback, where the extending piece deforms back to its initial state, potentially causing issues with communication quality due to improper crimping positions.
Innovation Solution
A connector design with a tubular connecting portion and a plate-like fixing barrel that includes a pressing portion within the terminal accommodating portion to ensure the fixing barrel is crimped at the proper position, preventing springback and ensuring secure connection by sandwiching the fixing barrel between the bottom wall and pressing portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the extending piece is crimped to wind around the outer peripheral surface of the first conductor, then the second conductor can be fixed to the first conductor without complicating the structures, but the extending piece may be lifted from the outer surface due to springback
Solution Approach 1:
The pressing portion is designed to apply a pressing force to the fixing barrel in the axial direction before final crimping is completed. This preliminary anti-action counteracts the springback tendency of the fixing barrel, preventing it from lifting away from the connecting portion's outer surface. By applying this counter-force during the crimping process, the invention ensures accurate positioning while maintaining the simple crimping structure.
2Reliability
If the fixing barrel is crimped at an improper position due to springback, then communication quality may be reduced, but adding a pressing portion increases the complexity of the terminal accommodating portion
Solution Approach 1:
The pressing portion is designed to serve multiple functions within the terminal accommodating portion structure. It not only presses the fixing barrel to prevent springback but also guides the fixing barrel into the proper position during assembly. This multi-functionality approach maintains structural simplicity while ensuring both reliable communication quality and ease of assembly.
Solution Approach 2:
The pressing portion utilizes the existing structural elements of the terminal accommodating portion to create the pressing function. By designing the pressing portion as an integrated feature rather than a separate component, the structure serves itself to prevent springback without requiring additional complex mechanisms or external devices.
3Manufacturing precision
If the pressing portion is positioned too far from the bottom wall, then the fixing barrel cannot be properly pressed, but positioning it closer reduces the space available for accommodating the outer conductor
Solution Approach 1:
The invention optimizes the distance parameter between the pressing portion and the bottom wall to achieve the ideal balance. By carefully selecting this dimensional parameter, the pressing portion can effectively press the fixing barrel to prevent springback while maintaining sufficient accommodation space for the outer conductor. This parameter optimization ensures both precise fixing barrel positioning and adequate space for cable assembly.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively prevents springback and maintains communication quality by ensuring the fixing barrel is consistently crimped at the correct position, reducing the risk of connector detachment and improving reliability.
Implementation Method 1
there is a concern that the extending piece is lifted from the outer surface of the first conductor due to so-called springback of the extending piece deformed by crimping to slightly return to an initial state
Data Source
AI summary
A connector disclosed by this specification is provided with a shielded cable including a conductive shield portion for covering outer peripheries of two coated wires and a sheath portion for covering an outer periphery of the shield portion, a first outer conductor including a tubular portion and to be connected to the shield portion, a second outer conductor including two plate-like fixing barrels to be crimped to wind around an outer surface of the tubular portion in a circumferential direction, and a housing including a module accommodating portion for accommodating an outer conductor formed by the first and second outer conductors by the fixing barrels being crimped to the tubular portion. The module accommodating portion includes a central ceiling wall capable of pressing the fixing barrels toward proper crimping positions in the process of accommodating the outer conductor.