Connector Lid Structure With Elastic Shell Engagement for Reflow Holding
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Solution Overview
Problem
Existing connector caps are not reliably held on connectors during reflow soldering processes due to insufficient holding force, leading to potential detachment and complexity in structure.
Innovation Solution
A lid member with a bisymmetrical shape and elastic pieces that engage with protruding portions of the connector shell through dent portions, ensuring secure attachment and detachment via a simple structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a groove and lock spring piece are used to hold the cap on the connector, then the cap can be attached to the connector, but the holding force is insufficient during reflow soldering processes
Solution Approach 1:
The engagement structure is divided into multiple protruding portions on the lid member and corresponding dent portions on the shell, distributing the holding force across multiple contact points rather than relying on a single groove-spring mechanism
Solution Approach 2:
The invention removes the complex lock spring piece and groove mechanism, replacing it with a simpler direct engagement system where protruding portions fit into dent portions, eliminating the need for elastic deformation components while achieving sufficient holding force
2Reliability
If a rib crossing the space inside the cap is provided to receive stress of the lock spring piece, then the holding force is improved, but the structure becomes complicated
Solution Approach 1:
The invention extracts and eliminates the rib structure entirely, achieving holding force through the direct geometric engagement of protruding portions with dent portions, where the shell's own structure provides the necessary stress reception without additional reinforcing elements
Solution Approach 2:
The dent portions are strategically positioned and shaped to concentrate and receive stress locally at the engagement points, eliminating the need for global rib structures that cross the entire internal space of the lid member
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
The lid member provides reliable and secure attachment to the connector, preventing liquid and dust ingress and facilitating easy handling during mounting and transportation, while reducing the risk of detachment during reflow soldering.
Implementation Method 1
a pair of elastic pieces 82A, 82B are arranged at positions facing each other along an inner wall 63a
Data Source
Figure 1
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AI summary
Provided are: a connector device using a lid member having a simple structure and reliably held on a connector; and the lid member. The connector device includes a connector having a metal shell forming at least part of a fitting space in which a partner connector is fitted, and a resin lid member provided detachably from the fitting space. The lid member includes an insertion portion to be inserted into the fitting space along the direction of fitting the partner connector into the fitting space, and a closing portion configured to close an opening of the fitting space when the insertion portion is inserted into the fitting space. The insertion portion includes an elastic piece extending from the closing portion. The elastic piece includes a protruding portion biased to an inner wall of the shell when the insertion portion is inserted into the fitting space and protruding in a biasing direction. A dent portion dented in the biasing direction β1 is formed at the inner wall. The protruding portion is fitted in the dent portion when the insertion portion is inserted into the fitting space.