Electrical Connector Abutment Arms for Stable Tongue Plate Insertion

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Solution Overview

Problem

The thickness limitations of printed circuit board mating tongue plates in electrical connectors lead to shaking and misalignment issues during insertion, affecting mating reliability and accuracy due to external forces and reduced terminal widths.

Innovation Solution

Incorporation of first and second abutment pieces with elastic arms on either side of the mating slot, perpendicular to the insertion direction, to guide and adjust the position of the mating tongue plate, ensuring accurate alignment with conductive terminals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the width of the mating slot is designed to be larger than the width of the mating tongue plate to facilitate insertion, then the ease of operation is improved, but the mating tongue plate is easily offset in the width direction causing misalignment between conductive pads and conductive terminals, worsening the manufacturing precision

Engineering Contradiction:
Improveease of insertionVSAvoidalignment precision
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

Guide ribs are added as intermediary structures on the mating tongue plate that extend into the mating slot. These guide ribs act as mediators between the mating tongue plate and the mating connector, providing precise positioning and preventing lateral offset while still allowing easy insertion. The guide ribs ensure accurate alignment between conductive pads and conductive terminals without requiring the mating slot to be tightly fitted.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of manufacture

If the thickness of the mating tongue plate is reduced to meet manufacturing constraints of printed circuit boards, then the ease of manufacture is improved, but the mating tongue plate becomes easily affected by external forces and shakes in the top-bottom direction, worsening the reliability

Engineering Contradiction:
Improvemanufacturability of PCBVSAvoidmating reliability
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

Elastic arms are incorporated into the mating connector structure to provide dynamic adaptation during mating. These elastic arms can deflect to accommodate the thin mating tongue plate while maintaining reliable contact. The elasticity allows the structure to absorb external forces and vibrations, preventing shaking and ensuring stable mating despite the reduced thickness of the PCB-based tongue plate.

Inventive Principle:
Principle #15Dynamics

3Productivity

If the width of conductive terminals is reduced to increase terminal density, then the productivity is improved, but the conductive pads on the mating tongue plate are also reduced in width, making insertion more difficult and affecting mating reliability, worsening the ease of operation

Engineering Contradiction:
Improveterminal densityVSAvoidease of insertion
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The mating tongue plate is segmented into multiple conductive pads with individual or grouped guide ribs extending from each pad or group. This segmentation allows each conductive pad to be precisely positioned independently, maintaining accurate alignment even when the overall tongue plate width is reduced to achieve higher terminal density. The segmented guide ribs ensure easy insertion while preserving mating reliability.

Inventive Principle:
Principle #1Segmentation

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

Enhances mating reliability and accuracy by stabilizing the tongue plate insertion, reducing misalignment risks and processing difficulties while allowing for repeated use.

Implementation Method 1

a first abutment piece, the first abutment piece being provided on the body portion, the first abutment piece including a first abutting elastic arm protruding into the mating slot; and a second abutment piece, the second abutment piece being provided on the body portion, the second abutment piece including a second abutting elastic arm protruding into the mating slot

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS20260051684A1Electrical connector with abutment piece for guiding insertion of mating tongue plate
Publication Date: 2026.02.19 DONGGUAN LUXSHARE TECH CO LTD
  • US20260051684A1 patent drawing
  • US20260051684A1 patent drawing
  • US20260051684A1 patent drawing

AI summary

An electrical connector includes a body portion, a number of conductive terminals, a first abutment piece and a second abutment piece. The body portion includes a mating slot configured to at least partially receive a mating tongue plate. The mating tongue plate includes a first side surface and a second side surface. Each conductive terminal includes a contact portion protruding into the mating slot. The first abutment piece includes a first abutting elastic arm. The second abutment piece includes a second abutting elastic arm. The first abutting elastic arm and the second abutting elastic arm are configured to abut against the first side surface and the second side surface of the mating tongue plate, respectively, to guide the mating tongue plate.