Connector Assembly Insulator Retention via Shielding Shell Accommodating Space
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Solution Overview
Problem
The existing connector assemblies face issues with the external insulator detaching from the shielding shells due to tension and shrinkage during cooling, leading to cracking, poor sealing, and aesthetic deformations, especially at the combination portion where the external insulator's weak edge is prone to warping and slipping.
Innovation Solution
A connector assembly design featuring an accommodating space between the rear shielding shell and the front shielding shell, where the external insulator is molded and filled, limiting tension and preventing cracking by forming a fastening portion within this space during cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the external insulator is injection-molded to the front and rear shielding shells, then the connector assembly is formed, but the external insulator shrinks and generates tension force after cooling, causing it to be easily degummed and cracked
Solution Approach 1:
The patent divides the shielding shell into two separate parts: the front shielding shell and the rear shielding shell. These two shells are positioned at different locations and serve different functions. The front shielding shell is connected to the insulating body, while the rear shielding shell is positioned at the rear end, creating a segmented structure that allows the external insulator to be molded without excessive tension concentration at one location.
Solution Approach 2:
The patent introduces an inner insulator as an intermediary component between the front shielding shell and the rear shielding shell. The inner insulator is positioned in the space between these two shells and provides a transition zone that reduces the tension force generated during cooling. This intermediary structure prevents direct stress concentration at the combination portions of the external insulator with the shielding shells.
2Ease of manufacture
If the external insulator is molded outside the front and rear shielding shells, then the connector assembly is complete, but the external insulator warps outward and deforms, making the appearance unaesthetic
Solution Approach 1:
By segmenting the shielding structure into front and rear shells positioned at different locations, the patent creates a distributed support system that prevents concentrated warping forces. The front shielding shell and rear shielding shell act as separate support points, distributing the external insulator and preventing excessive outward warping that would cause deformation and poor appearance.
3Ease of manufacture
If the external insulator is molded without sufficient support, then the molding process is simple, but the external insulator slips relative to the shielding shells during multiple insertions and extractions
Solution Approach 1:
The patent uses a segmented shielding shell structure with front and rear shells positioned at different locations. This segmentation creates multiple support points for the external insulator, distributing the mechanical stress during insertions and extractions. The inner insulator positioned between the shells provides additional support, preventing the external insulator from slipping relative to the shielding shells while maintaining a relatively simple molding process.
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 accommodating space effectively retains the external insulator on the shielding shells, preventing degumming and cracking, ensuring a secure and aesthetic connection while maintaining sealing integrity.
Implementation Method 1
the external insulator shrinks and generates a tension force after being cooled
Data Source
AI summary
A connector assembly includes: an insulating body; multiple terminals disposed in the insulating body; a front shielding shell shielding the insulating body; a rear shielding shell covering a rear end of the front shielding shell, where an accommodating space is formed between the rear shielding shell and an outer surface of the front shielding shell; and an external insulator, molded outside the front shielding shell and the rear shielding shell and filled into the accommodating space. Compared with the related art, the accommodating space limits tension generated when the external insulator is molded, and after molten plastic is cooled, a part of the external insulator will be fastened within the accommodating space, such that the external insulator can be efficiently retained on the front shielding shell and the rear shielding shell, thereby preventing degumming and cracking phenomenons between the front shielding shell and the external insulator.