Electrical Connector Dual Elastic Arm Vibration Stability
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Solution Overview
Problem
Conventional electrical connectors experience unstable electrical transmission due to deformation of elastic arms under external forces during vibration or mounting, leading to gaps and increased impedance.
Innovation Solution
The design features dual-channel terminals with a first elastic arm and a second elastic arm, where the second arm is fixed to the first arm by soldering, allowing stable contact and reducing the risk of deformation, and an abutting portion that slides along the base to maintain contact and reduce impedance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the auxiliary elastic arm is designed with a freely sliding contact on the main elastic arm, then the structure is simple and easy to manufacture, but the contact is unstable under vibration and external forces, leading to gaps and increased impedance
Solution Approach 1:
The patent transforms the static sliding contact into a dynamic press-fit structure where the auxiliary elastic arm's contact portion is elastically pressed against the main elastic arm by a pre-loaded spring. This dynamic pressing mechanism ensures continuous stable contact while accommodating vibrations and external forces, resolving the reliability issue without complicating manufacturing
Solution Approach 2:
The spring component is pre-loaded to provide a cushioning force that maintains constant pressure between the auxiliary and main elastic arms. This beforehand cushioning compensates for vibrations and external forces before they can cause contact instability or gaps, ensuring reliable electrical connection under varying conditions
2Device complexity
If the auxiliary elastic arm forms an electrical stub with no signal transmission function, then the structure is simplified, but the impedance increases and electrical performance deteriorates
Solution Approach 1:
The auxiliary elastic arm is redesigned to serve dual functions: it provides mechanical support/stability while simultaneously forming a valid electrical signal transmission path. By establishing reliable electrical connection between the auxiliary arm and main elastic arm through the press-fit mechanism, the auxiliary arm transitions from being a non-functional stub to an active signal transmission channel, reducing overall impedance and improving electrical performance without increasing device complexity
3Device complexity
If the main elastic arm bears all downward pressure alone, then the structure is simpler with fewer components, but excessive elastic deformation occurs leading to unstable electrical transmission
Solution Approach 1:
The patent segments the load-bearing function by introducing the auxiliary elastic arm as a separate component that shares the downward pressure from the chip module. The auxiliary arm's contact portion transfers part of the load to the main elastic arm through elastic deformation, distributing the stress and preventing excessive deformation of either component, thereby maintaining stable electrical transmission
Solution Approach 2:
The auxiliary elastic arm and main elastic arm are merged into a cooperative load-bearing system where both components work together to support the chip module. The auxiliary arm provides additional structural support and shares the mechanical load, while maintaining electrical connection, thus enhancing overall stability without significantly increasing structural complexity
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 configuration ensures stable electrical connections, accelerates signal transmission by providing a shorter conductive path, and reduces impedance by scraping off impurities, maintaining effective signal transmission even under external forces.
Implementation Method 1
the auxiliary elastic arm moves downward, and the auxiliary elastic arm slides along the main elastic arm and supports the main elastic arm upward
Implementation Method 2
a first terminal and a second terminal are fixed by soldering to form dual-channel terminals that are stably in contact, so as to achieve good conductivity
Data Source
AI summary
An electrical connector is used to electrically connect an electronic component to a circuit board, and includes an insulating body, at least one first terminal and at least one second terminal. The first terminal has a base accommodated in the insulating body, and a first elastic arm extending upward from the base and at least partially located above the insulating body. The first elastic arm is used to abut the electronic component. The second terminal has a fixed end and a second elastic arm connected to each other. The fixed end is at least partially located above the insulating body and fixed to the first elastic arm, and at least a portion of the second elastic arm is located in the insulating body and is slidably in contact with the first terminal.