Shield Connector Housing Structure to Eliminate Terminal Module Rattle
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Solution Overview
Problem
In shield connectors with a two-component outer shield shell, the fixing piece of the connecting member projects from the outer surface of the body member, creating a step that allows the terminal module to rattle when inserted into the housing.
Innovation Solution
The shield connector features a housing with a module accommodation chamber and a terminal module designed such that an inner conductor is surrounded by a dielectric, which is then surrounded by an outer conductor with a projecting portion. The inner wall of the module accommodation chamber includes a backlash eliminating portion that aligns with the projecting portion, preventing the terminal module from rattling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the outer shield shell has a two-component structure with a fixing piece, then the connecting member can be securely fixed to the body member, but a step is formed on the outer surface that causes the terminal module to rattle
Solution Approach 1:
A backlash eliminating portion is introduced as an intermediary element between the terminal module and the fixing piece. This mediator fills the gap created by the step, preventing the terminal module from rattling while maintaining the two-component structure's fixing strength.
Solution Approach 2:
The backlash eliminating portion is strategically placed only at the specific location where the step is formed, providing localized support to eliminate rattling without altering the overall two-component structure or requiring changes to the fixing piece itself.
2Ease of manufacture
If the fixing piece projects from the outer surface of the body member, then the connecting member can be crimped to the shield layer, but a gap is formed that allows the terminal module to incline
Solution Approach 1:
The backlash eliminating portion serves as a mediator that fills the gap created by the projecting fixing piece, ensuring that the terminal module inserts precisely without inclining, while preserving the ease of crimping manufacture.
Solution Approach 2:
The backlash eliminating portion is pre-formed on the body member before terminal module insertion, so that when the terminal module is inserted, the gap is already filled and precision is ensured without requiring additional adjustment steps.
Data Source
AI summary
A shield connector is provided with a housing including a module accommodation chamber and a terminal module to be inserted into the module accommodation chamber from behind the housing. The terminal module is formed such that an inner conductor is surrounded by a dielectric and the dielectric is surrounded by an outer conductor. The outer conductor includes a projecting portion projecting from a position rearward of a front end of the outer conductor on an outer surface of the outer conductor. An inner wall surface constituting the module accommodation chamber has a facing inner surface facing the outer surface formed with the projecting portion. The facing inner surface is formed with a projection-like backlash eliminating portion. The projecting portion is arranged behind the backlash eliminating portion with the terminal module inserted in the module accommodation chamber.