Electrical Connector Terminal Stability via Protruding Block
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Solution Overview
Problem
Existing electrical connectors for chip modules to circuit boards face issues with uneven retaining forces, leading to terminal instability and increased production costs due to complex bending structures and high assembly difficulties.
Innovation Solution
The electrical connector design features an insulating body with receiving slots and terminals that include elastic arms and clamping portions, where the flat plate and material connecting portions are limited between a protruding block and a side wall, ensuring even retention and simplifying the structure by eliminating the need for C-shaped bending arms, thus stabilizing the terminals and reducing assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the material connecting portion is retained between the stopping block and the inner wall of the receiving slot, then the terminal is fixed in the receiving slot, but the overall retaining force of the terminals is uneven, causing terminals to be easily turned over during assembly
Solution Approach 1:
The invention introduces a protruding block that creates asymmetric limiting positions for the material connecting portions. By positioning the protruding block at a specific location in the receiving slot, the patent achieves uniform retention force distribution across multiple terminals, preventing turnover during assembly while maintaining secure fixation.
2Reliability
If the extending arm of each terminal is bent into a C-shaped structure to limit the upward location of the tin ball, then the tin ball is constrained, but the stamping molding difficulty of the terminals increases and production cost increases
Solution Approach 1:
The invention extracts the C-shaped bending structure from the terminal design and replaces it with a simpler flat plate structure combined with a protruding block. The protruding block provides the necessary upward limitation for tin balls without requiring complex bending operations, thereby reducing stamping molding difficulty and production cost while maintaining effective tin ball positioning.
3Productivity
If multiple terminals are assembled to the receiving slots from top to bottom, then the terminals are installed in place, but the uneven retaining force causes terminals to turn over, reducing production yield
Solution Approach 1:
The protruding block is pre-positioned in the receiving slot before terminal assembly. This preliminary action establishes the correct limiting position for material connecting portions, ensuring that when terminals are assembled from top to bottom, they are automatically guided into the correct position with uniform retention force, preventing turnover and maintaining high production yield.
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 design enhances terminal stability, reduces assembly difficulties, improves production yield, and simplifies the terminal structure, resulting in increased market competitiveness by ensuring even retaining forces and preventing terminal turnover during assembly.
Implementation Method 1
An elastic arm and a material connecting portion are formed by extending upward from the flat plate portion. A contact portion is formed at the top end of the elastic arm to upward and elastically urge the chip module.
Implementation Method 2
The tin balls are respectively and correspondingly fixed between the two clamping portions, soldered to the circuit board, and positioned below the protruding block to be prevented from moving up.
Data Source
AI summary
An electrical connector includes an insulating body having a bottom plate with receiving slots and multiple terminals received in the receiving slots. Each receiving slot has two opposite first side walls, and a second and third side walls connecting the first side walls. A protruding block protrudes from the second side wall toward the third side wall. Each terminal has a plate portion, an elastic arm and a material connecting portion extending upward from the plate portion, a contact portion at a top end of the elastic arm to urge a chip module, and two clamping portions bending and extending from two opposite sides of the plate portion horizontally. The plate portion and the material connecting portion are limited between the protruding block and the third side wall. Tin balls are fixed between the clamping portions, and soldered to a circuit board. The tin balls are below the protruding block.