Electrical Connector Flexible Arms Flat Conductor

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Solution Overview

Problem

Existing electrical connectors for flat conductors face issues with contact reliability due to excessive load on pressing portions and tilting of the flat conductor, which affects the contact pressure and reliability at the contact portions.

Innovation Solution

The electrical connector features a housing with independently elastically displaceable lower and upper flexible arms, each with multiple striking portions that distribute the force evenly across the flat conductor, preventing excessive load on any single portion and ensuring reliable contact even when the conductor is tilted.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single arm unit with multiple contact portions and pressing portions is used, then the structure is simple, but the contact reliability deteriorates when one contact portion is displaced causing tilt

Engineering Contradiction:
Improvestructure simplicityVSAvoidcontact reliability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The terminal is divided into multiple independent lower arms, each with its own contact portion. This segmentation allows each arm to independently adjust and maintain contact pressure, preventing the tilt problem that occurs when a single arm unit is used. Each lower arm can displace independently to compensate for conductor positioning variations.

Inventive Principle:
Principle #1Segmentation

2Reliability

If contact portions are provided on independently displaceable lower arms, then contact reliability improves, but the load on the pressurizing portion increases when conductor tilts

Engineering Contradiction:
Improvecontact reliabilityVSAvoidload on pressurizing portion
Core Design Contradiction:
ReliabilityVSForce

Solution Approach 1:

The pressurizing function is segmented into multiple pressing portions, each associated with a specific lower arm and contact portion. This distributes the load across multiple points rather than concentrating it on a single pressurizing portion, reducing the force burden when conductor tilting occurs.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The upper arm acts as an intermediary element that transmits pressing force from the pressurizing portion to the conductor at the contact portion. This intermediary structure allows for better force distribution and reduces the direct load on the pressurizing portion by providing a mechanical advantage through the arm leverage.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Volume of moving object

If the pressurizing portion is positioned between contact portions, then the structure is compact, but it is harder to firmly clamp the conductor

Engineering Contradiction:
Improveconnector sizeVSAvoidclamping reliability
Core Design Contradiction:
Volume of moving objectVSReliability

Solution Approach 1:

The clamping function is segmented into multiple independent lower arms that can displace independently. This allows the conductor to be firmly clamped at multiple contact points simultaneously, even when the pressurizing portion is positioned compactly between the contact portions. Each arm can adjust to maintain proper clamping force.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The lower arms are designed to be elastically displaceable, providing dynamic adjustment capability. This allows the arms to automatically adjust their position and angle to maintain optimal clamping force on the conductor, compensating for the compact positioning of the pressurizing portion and ensuring reliable contact.

Inventive Principle:
Principle #15Dynamics

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 maintains a good contact state with the flat conductor by dispersing the force across multiple striking portions, enhancing contact reliability and preventing excessive load on any single portion, thus improving the overall connection stability.

Implementation Method 1

independently elastically displaceable lower and upper flexible arms

Methodology Applied
Scientific EffectElastic displacement: Elasticity

Data Source

PatentUS10673155B2Electrical connector for flat conductor
Publication Date: 2020.06.02 HIROSE ELECTRIC CO LTD
  • US10673155B2 patent drawing
  • US10673155B2 patent drawing
  • US10673155B2 patent drawing

AI summary

A terminal, wherein, the lower and upper arms have a plurality of integral lower flexible arms and integral upper flexible arms respectively, which include at least a first lower and upper flexible arm and a second lower and upper flexible arm that are elastically displaceable independently of each other, the lower striking portions each have a first and second lower striking portion formed on a first and second lower flexible arm respectively, the second lower striking portion at a position that is offset in the longitudinal direction with respect to the first lower striking portion, and the upper striking portions each have a first and second upper striking portion formed on a first and second upper flexible arm respectively, the second upper striking portion at a position that is offset in the longitudinal direction with respect to the first upper striking portion.