Insertion Slot Connector Layout for Lower EMI Card Interfaces

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current card edge connectors with vacant slots generate electromagnetic interference due to their design, leading to complex user interactions and inconvenience when inserting electronic cards, as they require separate top and bottom connectors to reduce interference.

Innovation Solution

An insertion slot connector with an insulating body and conductive terminals featuring an elastic arm and soldering portion, where the elastic arm extends towards the mating surface and back to the bottom wall, reducing the overall length of the conductive terminals and minimizing electromagnetic interference by maintaining mechanical characteristics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-generated harmful factors

If the conductive terminal length is reduced to minimize antenna effect, then electromagnetic interference is reduced, but mechanical characteristics and reliability may deteriorate

Engineering Contradiction:

Improveelectromagnetic interferenceVSAvoidmechanical characteristics

Core Design Contradiction:

Object-generated harmful factorsVSReliability

Solution Approach 1:

The conductive terminal is divided into three functional segments: base (provides mechanical support and electrical connection), elastic arm (provides contact force and positioning), and soldering portion (provides secure mounting). This segmentation allows each part to be optimized independently, enabling reduced overall length while maintaining mechanical reliability through proper allocation of functions to appropriate segments.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The elastic arm extends in a curved path rather than a straight line, utilizing three-dimensional space efficiently. The arm extends from the base toward the mating surface and curves back toward the bottom wall, creating a compact structure that reduces the linear distance from slot bottom to soldering surface while maintaining adequate elastic deformation space for reliable contact.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Object-generated harmful factors

If separate top and bottom connectors are used to reduce electromagnetic interference, then antenna effect is minimized, but device complexity and ease of operation deteriorate

Engineering Contradiction:

Improveantenna effectVSAvoidconnector structure

Core Design Contradiction:

Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The top connector and bottom connector are merged into a single integrated insertion slot connector assembly. The conductive terminals are mounted on an insulating body that provides both the top connector interface (with mating surface and insertion slot) and the bottom connector mounting (with soldering portions). This integration eliminates the need for separate connectors while maintaining the short effective electrical length needed to reduce antenna effect.

Inventive Principle:

Principle #5Merging (Combining)

3Object-generated harmful factors

If separate top and bottom connectors are used to reduce electromagnetic interference, then antenna effect is minimized, but ease of operation deteriorates due to multiple connection steps

Engineering Contradiction:

Improveelectromagnetic interferenceVSAvoidusage process

Core Design Contradiction:

Object-generated harmful factorsVSEase of operation

Solution Approach 1:

Inventive Principle:

Principle #5Merging (Combining)

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

The solution effectively reduces the antenna effect and electromagnetic interference from vacant connectors by shortening the conductive terminal length, enhancing user convenience and reducing electromagnetic interference while maintaining mechanical integrity.

Implementation Method 1

each of the conductive terminals comprises a base, an elastic arm and a soldering portion, the base is provided on the insulating body, the elastic arm extends from one end of the base adjacent to the mating surface toward the mating surface and turns back to extend toward the bottom wall

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS20250105538A1Insertion slot connector and connector assembly

Publication Date: 2025.03.27 LOTES

AI summary

An insertion slot connector and a connector assembly. The insertion slot connector includes an insulating body and multiple conductive terminals. The insulating body includes two side walls, a bottom wall and an insertion slot. The insulating body has a mating surface and a mounting surface provided opposite to each other. The insertion slot runs through the mating surface. Each conductive terminal includes a base, an elastic arm extending from the base toward the mating surface and turns back to extend toward the bottom wall, a contact portion provided at a tail end of the elastic arm and a soldering portion. A distance between the insertion slot and the soldering surface of the soldering portion in the insertion direction is not greater than 0.70 mm. The connector assembly includes a circuit board and at least one insertion slot connector and at least one card edge connector alternately mounted thereon.