汽车天窗漏水原因分析与方案优化

Cause Analysis and Scheme Optimization of the Automobile Sunroof Water Leakage

为解决汽车天窗漏水问题,以底装式天窗结构为基础,研究了车身与车顶密封条之间漏水、车顶密封条与天窗玻璃之间漏水、水流翻过导水槽漏水3种天窗漏水模式,发现漏水原因与天窗密封条、天窗导水槽、天窗排水管、车身、装配等因素有关,结果表明,改善车顶密封条的形式、压缩载荷性能、与环境件之间的配合以及接头质量,改进导水槽的布置、结构与导水量,改进排水管的形式、布置、排水量,改善车身的翻边尺寸与表面质量,优化装配环境、手法与工装定位,可有效解决天窗漏水问题。

In order to find the cause of sunroof water leakage,this paper systematically studies three types of sunroof water leakage modes based on the bottom-mounted sunroof structure,including water leakage between the body and the roof seal strip,water leakage between the roof seal strip and the sunroof glass,water leakage over the guiding gutter.The result show that the sunroof water leakage are related to factors like the sunroof seal strip,the sunroof guiding gutter,the sunroof drain pipe,the body and the assembly.The sunroof water leakage can be effectively solved by improving the form of the roof seal strip,compression load performance,coordination with environmental components and joint quality,improving the layout,structure and water conductivity of the guiding gutter,improving the form,layout and displacement of the drainage pipe,improving the flanging size and surface quality of the body,optimizing the assembly environment,techniques and tooling positioning.