Electrical Connector Shielding and Clamping for Terminal Positioning
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Solution Overview
Problem
Existing electrical connectors with low insertion force designs face issues such as terminal damage and difficulty in smooth pin insertion due to inadequate shielding and positioning, leading to unreliable connections.
Innovation Solution
The electrical connector features accommodating holes with shielding portions, bending extending portions, and clamping arms that securely position and clamp solder balls, along with guide chamfers and positioning surfaces to facilitate smooth pin insertion and prevent terminal movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the terminal is fixed with the through slot only by the main portion, then the assembly is simple, but the solder ball easily pushes the terminal to move upward causing damage and affecting flatness
Solution Approach 1:
The terminal is divided into distinct functional portions: a main portion for electrical connection, extending portions for structural support, and a positioning portion specifically designed to interact with the through slot. This segmentation allows each portion to perform its specific function optimally without interfering with others.
Solution Approach 2:
The positioning portion acts as an intermediary element between the terminal and the through slot. It provides a dedicated interface for positioning that prevents direct interference between the solder ball and the main portion, thereby stabilizing the terminal without complicating the overall fixing structure.
2Object-affected harmful factors
If the main portion and extending portions abut the shielding portion upward, then the terminal is shielded, but it is difficult for the main portion and extending portions to move in the through slot causing rigid collision
Solution Approach 1:
The terminal structure is segmented into a main portion and extending portions, with the positioning portion providing a specific interface for movement control. This allows the main portion and extending portions to move independently within the through slot without abutting the shielding portion, ensuring smooth pin insertion while maintaining shielding effectiveness.
Solution Approach 2:
The positioning function is extracted from the main portion and extending portions and embodied in a dedicated positioning portion. This separation allows the main portion and extending portions to focus on their primary functions (electrical connection and structural support) while the positioning portion handles the movement control, preventing rigid collision during insertion.
3Manufacturing precision
If the upper end of the base is exposed upward to the accommodating hole, then the terminal positioning is improved, but the structure complexity increases
Solution Approach 1:
The terminal base is segmented with an exposed upper end portion that extends into the accommodating hole. This exposed portion serves as a precise positioning interface that engages with corresponding features in the accommodating hole, providing accurate terminal positioning without requiring additional complex positioning mechanisms.
Solution Approach 2:
The exposed upper end of the base serves multiple functions: it provides precise positioning within the accommodating hole, acts as a stop for the solder ball assembly process, and maintains structural integrity. This multi-functionality achieves high positioning precision without increasing overall structural complexity.
Data Source
AI summary
An electrical connector includes: a body, provided with multiple accommodating holes penetrating through an upper surface and a lower surface of the body; multiple terminals, correspondingly accommodated in the accommodating holes; and multiple solders. Each accommodating hole has two opposite shielding portions. Each terminal includes a base, two extending portions bending and extending from two opposite sides of the base, two contact arms extending downward from the two extending portions and toward each other, and two clamping portions bending and extending from two opposite sides of a lower end of the base. An upper end of the base is exposed upward to a corresponding accommodating hole. The shielding portions shield upper ends of the extending portions. The two contact arms are used for a pin of a plug to insert downward therebetween. Each solder is correspondingly clamped by the two clamping portions.