Electrical Connector with Sideward Contacts for Package Stability
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Solution Overview
Problem
Existing electrical connectors with a large number of contacts experience excessive upward reaction forces, which can lead to instability and potential damage to electronic packages.
Innovation Solution
An electrical connector assembly with a combination of first contacts extending upwardly and second contacts extending sidewardly into the receiving cavity, where the second contacts provide counterbalancing forces for heat dissipation and ease of package loading/unloading, while the first contacts provide upward reaction forces, and the design includes L-shaped restriction parts and passageways for secure retention and orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of contacts is increased to increase the mating normal force, then the electrical connection reliability is improved, but the upward reaction forces become excessive causing instability and potential damage to electronic packages
Solution Approach 1:
The patent divides the contacts into two distinct types: first contacts extending upwardly to contact the undersurface of the electronic package, and second contacts extending sidewardly to contact the side surface of the electronic package. This segmentation allows the force distribution to be separated, with first contacts providing upward reaction forces and second contacts providing lateral stabilizing forces, thereby resolving the contradiction between needing sufficient mating force and avoiding excessive upward reaction forces that cause instability.
2Strength
If the contacting sections are enclosed within the housing for protection, then the mechanical strength is improved, but the heat dissipation capability deteriorates
Solution Approach 1:
The patent applies local quality by exposing only the contacting sections of the second contacts to the exterior through openings in the housing, while keeping other parts enclosed for protection. This localized exposure provides sufficient heat dissipation capability at the critical contacting areas without compromising the overall mechanical protection of the connector housing and its internal components.
3Stability of the object's composition
If the housing is designed to securely retain the electronic package, then the stability is improved, but the ease of operation for loading and unloading deteriorates
Solution Approach 1:
The patent employs asymmetric design in the restriction parts, where the top faces of the restriction parts are positioned at different heights relative to the electronic package. This asymmetric configuration provides secure retention by preventing improper insertion while simultaneously allowing easy loading and unloading through the strategically positioned opening, resolving the contradiction between stability and ease of operation.
Data Source
AI summary
An electrical connector includes an insulative rectangular housing with a planar base defining opposite upper surface and lower surface thereon. Four restriction parts are formed at four corners of the base to cooperate with the base for commonly forming a receiving cavity to receive the electronic package therein. A plurality of first contacts are disposed in the base with corresponding contacting sections upwardly extending into the receiving cavity to upwardly abut against the corresponding pads on the undersurface of the electronic package. A plurality of second contacts are disposed in the base with corresponding contacting sections sidewardly extending into the receiving cavity to sidewardly abut against the corresponding pads on the side faces of the electronic package.