Transition Coupler Structure for Automatic BSI Coupling

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Solution Overview

Problem

Current transition couplers struggle to adapt to the subtle differences among various models of standard couplers, particularly for BSI-type couplers, lacking a practical and reliable solution for universal coupling.

Innovation Solution

A transition coupler with a fixed coupler hook structure and multiple positioning structures, including inclined surfaces and auxiliary positioning blocks, designed to automatically couple with BSI-type couplers, ensuring stable and efficient coupling and uncoupling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a universal transition coupler with fixed structure is used to couple with multiple models of standard couplers, then the versatility is improved, but the adaptability to subtle differences among various models deteriorates

Engineering Contradiction:
ImproveversatilityVSAvoidadaptability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The transition coupler is divided into multiple functional segments: a first coupler hook for engaging the first standard coupler, a second coupler hook for engaging the second standard coupler, and a connection structure linking the two hooks. This segmentation allows each hook to be independently positioned and configured to match specific coupler models, thereby achieving both versatility across different models and reliable adaptation to subtle structural differences through dedicated positioning mechanisms.

Inventive Principle:
Principle #1Segmentation

2Reliability

If a dedicated transition coupler is provided for each model of standard coupler, then the adaptability to subtle differences is improved, but the device complexity increases

Engineering Contradiction:
ImproveadaptabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The transition coupler integrates multiple functions into a single device: it can couple with different models of standard couplers on both the first and second sides through configurable positioning structures. The connection structure allows the second coupler hook to be positioned at multiple locations, enabling the same transition coupler to adapt to various coupler model combinations without requiring multiple specialized devices, thus reducing overall system complexity while maintaining high adaptability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Ease of operation

If manual coupling method is used for transition couplers, then the ease of operation is maintained, but the productivity and efficiency deteriorate

Engineering Contradiction:
Improveease of operationVSAvoidefficiency
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The transition coupler employs self-aligning and self-latching mechanisms through its connection structure and positioning members. When coupling occurs, the first and second coupler hooks automatically align with their respective standard couplers through guided movement, and the positioning structures automatically engage to secure the connection. This self-service capability eliminates the need for manual intervention while maintaining operational simplicity, thereby significantly improving coupling efficiency and productivity.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP4682015A1Transition coupler and coupling method therefor
Publication Date: 2026.01.21 QINGDAO SRI TECH CO LTD
  • EP4682015A1 patent drawingFigure 1a~1b
  • EP4682015A1 patent drawingFigure 2a~2b
  • EP4682015A1 patent drawingFigure 2c~2d

AI summary

The present application provides a transition coupler and a coupling method for the transition coupler. The transition coupler comprises a coupler head and a coupler rear, wherein a coupling surface formed on a side of the coupler head coupled with a train coupler, a coupler head housing is provided between the coupling surface and the coupler rear; a coupler hook structure is formed on the coupling surface, and is configured to be coupled with the coupler tongue of the train coupler; a female cone structure is formed on the coupling surface, and is configured to accommodate a male cone of the train coupler, the female cone structure comprises a cavity formed from the coupling surface toward an interior of the coupler head housing .