A high-rigidity lightweight sandwich panel for a roof of a road traffic vehicle and a manufacturing process thereof

By using a connecting sleeve and plug-in rod structure in the roof sandwich panel and fixing it with the negative pressure of the sealing plug, the problem of unstable connection of the roof sandwich panel under vibration is solved, and higher stability and connection reliability are achieved.

CN121734521BActive Publication Date: 2026-06-09CHENGDU XIJIAO RAIL TRANSIT EQUIP TECH CO LTD
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Patent Information

Application Number
CN202610236669.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-02-28
Publication Date
2026-06-09
Estimated Expiration
2046-02-28

AI Technical Summary

Technical Problem

The existing roof sandwich panels have poor connection stability between the upper panel, lower panel and lightweight core material when vibrating, resulting in unstable connections.

Method used

The system employs a connecting sleeve and plug-in rod structure. The plug-in rod is inserted into the connecting sleeve and fixed by the negative pressure of the sealing plug, thus achieving a stable connection between the upper panel, lower panel and lightweight core material.

Benefits of technology

This improved the stability of the sandwich panel, reduced the possibility of the top and bottom panels falling off, and enhanced the stability of the connection.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to a high-rigidity lightweight interlayer plate for a vehicle roof of a highway traffic vehicle and a manufacturing process, and belongs to the technical field of vehicle roof interlayer plates. The interlayer plate comprises an upper panel, a lower panel and a lightweight core material, the lightweight core material is clamped between the upper panel and the lower panel and is fixedly connected through an adhesive layer; the surface of the lower panel facing the lightweight core material is provided with a connecting sleeve, the axis direction of the connecting sleeve is perpendicular to the lower panel, the surface of the upper panel facing the lightweight core material is provided with a plug-in rod, the axis direction of the plug-in rod is perpendicular to the upper panel, when the upper panel clamps the lightweight core material, the plug-in rod is plugged into the connecting sleeve, the interlayer plate further comprises a fixing piece which is used for fixing the plug-in rod into the connecting sleeve; and the end of the connecting sleeve is in an inverted conical shape. The application has the effect of improving the connection stability of the interlayer plate.
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Citation Information

Patent Citations

  • Sealing plug capable of exhausting air

    CN220400977U

  • Sandwich car roof structure

    CN220662663U

  • Double-arch-core titanium steel composite plate

    CN220742359U