Vehicle Opening Assembly with Reversible Sealing Frames

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Solution Overview

Problem

Existing high-speed rail vehicles face challenges in installing and replacing air conditioning units in technical compartments without damaging their sealing function, as the metal frames used are not easily replaceable and can cause stress and deformation during assembly.

Innovation Solution

A vehicle assembly featuring a first metal frame that frames an opening in a watertight manner and is riveted to the vehicle body, with a second metal frame that partially frames the opening and is reversibly attached, allowing easy access and replacement of equipment while maintaining a seal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a metal frame is used to seal the opening in the vehicle body, then the sealing function is improved, but the risk of damaging equipment during installation and the inability to replace the frame increase

Engineering Contradiction:

Improvesealing functionVSAvoidreplaceability of frame

Core Design Contradiction:

ReliabilityVSEase of repair

Solution Approach 1:

The metal frame is divided into two separate parts: a first metal frame fixed to the vehicle body structure and a second metal frame attached to the equipment. This segmentation allows the equipment and its frame to be removed and replaced independently while maintaining the sealing function through the gasket connection between the two frames.

Inventive Principle:

Principle #1Segmentation

2Strength

If welding is used to attach the metal frame to the vehicle body, then the structural strength is improved, but the stress and deformation areas increase

Engineering Contradiction:

Improvestructural strengthVSAvoidstress and deformation

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The welding process is replaced with a mechanical fastening system using rivets to attach the first metal frame to the vehicle body structure. This substitution eliminates the thermal stress and deformation associated with welding while maintaining structural strength through the rivet connections.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentEP4151493B1Vehicle comprising an assembly comprising a structure in which an opening and a junction device is formed

Publication Date: 2025.11.05 SPEEDINNOV

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AI summary

The invention relates to an assembly (16) comprising a structure (17) in which an opening (21) is formed, and a joining device (18) comprising a first metal frame (20) riveted to the structure (2) and totally framing the opening (21) of the structure (17) and a second metal frame (28) attached to the first metal frame (20) in a sealed and reversible manner, and partially framing the opening (21).