Retaining-Ring Single-Pin Connector for Modular Rail Assembly

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Solution Overview

Problem

Existing connector systems for rail vehicles are heavy and large, making on-site installation and maintenance difficult due to their size and weight.

Innovation Solution

A single-pin and multi-pin connector system where contacts are fixed using a retaining ring, allowing for independent insertion and removal, facilitating easier installation and maintenance by simplifying the construction process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional connector system is used to transmit high electrical currents, then reliable electrical connection is achieved, but the weight and dimensions increase, making on-site installation difficult

Engineering Contradiction:
Improveelectrical connection reliabilityVSAvoidconnector weight
Core Design Contradiction:
ReliabilityVSWeight of stationary object

Solution Approach 1:

The connector system is divided into modular single-pin connectors that can be independently assembled and disassembled. Each contact is individually accessible through a retaining ring mechanism, allowing maintenance without replacing the entire connector system, thus reducing overall weight while maintaining reliability

Inventive Principle:
Principle #1Segmentation

2Reliability

If a traditional connector system is used to transmit high electrical currents, then reliable electrical connection is achieved, but the dimensions increase, making on-site installation difficult

Engineering Contradiction:
Improveelectrical connection reliabilityVSAvoidconnector dimensions
Core Design Contradiction:
ReliabilityVSLength of stationary object

Solution Approach 1:

The connector is segmented into modular components with individual contacts accessible through a retaining ring. This allows compact design where multiple contacts are arranged in a space-efficient manner, reducing overall dimensions while maintaining reliable electrical connections for high current transmission

Inventive Principle:
Principle #1Segmentation

3Stability of the object's composition

If contacts are fixed in a traditional manner, then structural stability is achieved, but maintenance and exchange of contacts becomes complex

Engineering Contradiction:
Improvecontact fixation stabilityVSAvoidcontact maintenance ease
Core Design Contradiction:
Stability of the object's compositionVSEase of repair

Solution Approach 1:

The retaining ring provides a dynamic fixation mechanism that allows contacts to be securely held during operation but easily removed when needed. The ring can be rotated or actuated to release the contact, enabling quick maintenance and exchange while maintaining stable fixation during normal use

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The retaining ring mechanism is designed to enable easy self-service maintenance. The contact can be removed and reinstalled by simply manipulating the retaining ring, allowing engineers to perform maintenance without specialized tools or complex procedures, thus improving ease of repair while maintaining stability

Inventive Principle:
Principle #25Self-service

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 system enables efficient on-site installation of connector systems, meeting insulation resistance, dielectric strength, water-tightness, and vibration test requirements while ensuring reliable electrical connections.

Implementation Method 1

the retaining ring is screwed into the cover until the delimiting protrusion bears against the delimiting portion, thereby fixing the contact housing in the cover by a screw connection

Methodology Applied
Scientific EffectScrew connection: Screw

Data Source

PatentUS20250015535A1Male single-pin connector, female multi-pin connector and connector system formedt hereof
Publication Date: 2025.01.09 HARTING ELECTRIC STIFTUNG & CO KG
  • US20250015535A1 patent drawing
  • US20250015535A1 patent drawing
  • US20250015535A1 patent drawing

AI summary

A male single-pin connector is provided. The single-pin connector includes a contact, which has a contact housing, wherein the contact housing has at least one limiting protrusion on an outer surface; and a cover for receiving the contact, wherein the inner surface of the cover has an inwardly protruding limiting portion and an internal thread portion, wherein the internal thread portion is closer to the insertion side than the limiting portion; wherein the male single-pin connector also includes a retaining ring having an outer thread portion, wherein, after insertion of the contact housing into the cover against the plug-in direction, the retaining ring is screwed into the cover until the limiting protrusion comes into contact with the limiting portion, thereby fixing the contact housing in the cover by a screw connection. A female multi-pin connector and a connector system is also provided. A simple securing of the contact can be achieved using the male single-pin connector and the female multi-pin connector. An independent mounting or removal of the male single-pin connector can be achieved using the connector system, which facilitates assembly.