Contact Terminal With Flat Surfaces Reducing Resistance
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Solution Overview
Problem
Conventional contact terminals have multiple contact points that increase electric resistance in the current path, limiting the efficiency of electrical inspections.
Innovation Solution
A contact terminal design featuring a tubular body with spiral spring portions and bar-shaped conductors, where the conductors have flat surfaces that contact each other, reducing the number of contact points and enhancing conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple contact points are formed inside the contact terminal using conventional design, then the conductive state is established, but the electric resistance increases
Solution Approach 1:
The patent merges the first conductor and second conductor into direct contact, eliminating the intermediate joining portion. The first conductor is fixed to one end of the tubular body and the second conductor is fixed to the other end, creating a direct conductive path without multiple contact points, thereby reducing electric resistance while maintaining reliable conductivity.
Solution Approach 2:
The patent removes the joining portion that connected the first and second conductors in conventional designs. By extracting this intermediate component, the design eliminates the additional contact points it created, directly reducing the number of interfaces and associated electric resistance in the current path.
2Reliability
If two contact points are formed between conductors and joining portion, then the conductive state is established, but the device complexity increases
Solution Approach 1:
The patent simplifies the device structure by merging the conductor connections directly to the tubular body ends, eliminating the separate joining portion. This reduces the number of contact points from two (conductor-to-joining portion interfaces) to zero internal contact points, thereby reducing device complexity while maintaining the conductive state.
Solution Approach 2:
The patent extracts and removes the joining portion from the contact terminal structure. This elimination of the intermediate component reduces the number of contact points and simplifies the overall device structure, directly addressing the complexity issue while preserving the necessary conductive functionality.
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 reduces contact resistance and stabilizes the conductive state between the conductors, improving the efficiency of electrical inspections by minimizing the number of contact points within the terminal.
Implementation Method 1
The tubular body includes a spring portion formed in a spiral shape along a peripheral surface of the tubular body
Implementation Method 2
one end portion of the first central conductor is brought into pressure contact with the electrode of the base plate according to a biasing force of the first spring portion and the second spring portion
Data Source
AI summary
In a contact terminal, the first insertion portion includes a first contact portion having a first flat surface along an axial direction, the second insertion portion includes a second contact portion having a second flat surface along the axial direction, the first flat surface and the second flat surface are in contact with each other, the tubular body includes at least one of a first end side notch provided along the axial direction on a peripheral surface of the one end portion in the axial direction of the tubular body and a second end side notch provided along the axial direction on a peripheral surface of the other end portion in the axial direction of the tubular body.