HF Plug Connector Catch Basket for Stable Contact Pressure

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Solution Overview

Problem

Existing plug connectors for high-frequency signals, particularly in the automotive industry, face issues with deformation of spring lugs due to mechanical loading, leading to altered transmission properties or contact interruptions.

Innovation Solution

A plug connector design featuring an inner-conductor contact, outer-conductor contact, and an insulator, with a catch basket comprising spring elements connected by torsion bridges, allowing for a tilting movement that maintains consistent contact pressure through multiple contact points, even under mechanical stress.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Force

If spring lugs are used for contacting the pin side, then contact force is provided, but the spring lugs may remain deformed due to mechanical loading such as diagonal pulling

Engineering Contradiction:
Improvecontact forceVSAvoiddeformation of spring lugs
Core Design Contradiction:
ForceVSStability of the object's composition

Solution Approach 1:

The spring lug is divided into multiple independent contact elements (first contact element and second contact element) that can move independently. This segmentation allows each element to accommodate mechanical loading separately, preventing permanent deformation while maintaining contact force.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The contact elements are designed to be movable rather than fixed, allowing them to dynamically adjust their position and orientation in response to mechanical loading. The elements can tilt and reposition themselves to absorb diagonal pulling forces without permanent deformation.

Inventive Principle:
Principle #15Dynamics

2Reliability

If spring lugs are used for contacting, then contact is established, but altered high-frequency properties or contact interruption may occur due to deformation

Engineering Contradiction:
Improvecontact reliabilityVSAvoidhigh-frequency transmission properties
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

By segmenting the contact structure into multiple independent elements, the system maintains more consistent contact pressure and positioning, which preserves high-frequency transmission properties and prevents contact interruption.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The contact elements can change their orientation and position parameters dynamically to maintain optimal contact conditions for high-frequency signal transmission, even under mechanical stress.

Inventive Principle:
Principle #35Parameter changes

3Stability of the object's composition

If a catch basket with tilting spring elements is used, then contact pressure is distributed evenly, but device complexity increases

Engineering Contradiction:
Improvecontact pressure distributionVSAvoidcatch basket structure
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The catch basket is segmented into multiple identical spring elements, which simplifies manufacturing and assembly while achieving even contact pressure distribution through the replicated modular structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The spring elements serve multiple functions: providing contact force, distributing pressure evenly, and accommodating mechanical loading through tilting movement, thereby reducing the need for additional components.

Inventive Principle:
Principle #6Universality (Multi-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

The design ensures minimal loss of contacting force and maintains consistent transmission properties by distributing contact pressure evenly, reducing the risk of deformation and ensuring reliable high-frequency signal transmission.

Implementation Method 1

The at least one spring element is connected to the main body by torsion bridges such that the at least one spring element is configured to tilt when the plug connector and mating plug connector are being connected

Methodology Applied
Scientific EffectTorsion: Torsion Spring

Implementation Method 2

The at least one spring element is configured to tilt when the plug connector and mating plug connector are being connected, and such that the first and the second free end are configured to press against the mating plug connector

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS12463390B2Plug connector and plug connector system
Publication Date: 2025.11.04 MD ELEKTRONIK GMBH
  • US12463390B2 patent drawing
  • US12463390B2 patent drawing
  • US12463390B2 patent drawing

AI summary

A plug connector for transmitting high-frequency signals includes an inner-conductor and an outer-conductor contact, and an insulator arranged therebetween. A receptacle is formed by the outer-conductor contact and is configured to receive a mating plug connector to establish a connection. A catch basket is: formed by the outer-conductor contact, and/or arranged in the receptacle and is configured to produce contacting between the outer-conductor contact and the mating plug connector in a connected state of the plug connector and the mating plug connector. The catch basket comprises a main body and a spring element having a first and second free end. The spring element is connected to the main body by torsion bridges such that the spring element is configured to tilt when the plug connector and mating plug connector are being connected, and such that the free ends are configured to press against the mating plug connector.