SUV行李架设计开发过程概述
2021-08-09李帅
李帅



摘 要:当前,SUV逐渐成为乘用车市场的主流车型,在国内车市也是很多消费者的宠儿,SUV、具有内部空间大,通过性能好,外观颜值高等特点,而要想提升SUV的外观颜值,在车顶上安装左右行李架纵梁总成还是不可或缺的。本文从设计开发角度进行阐述,讲解SUV车型行李架的开发过程注意事项和设计过程的重要参数,旨在尽量减少车型在试制阶段发生的单件问题和配合类问题。
关键词:悬浮式行李架 贴顶式行李架 纵梁 横梁 顶盖饰条
Overview of SUV Luggage Rack Design and Development Process
Li Shuai
Abstract:At present, SUV has gradually become the mainstream model in the passenger car market, and it is also the darling of many consumers in the domestic auto market. SUV has the characteristics of large internal space, good performance and high appearance, but if you want to improve the appearance of SUV, it is indispensable to install the left and right luggage rack rail assemblies on the roof. This article elaborates from the perspective of design and development, explaining the precautions of the development process of the SUV model luggage rack and the important parameters of the design process, aiming to minimize the single-piece problems and coordination problems that occur during the trial production stage of the model.
Key words:suspended luggage rack, top-mounted luggage rack, longitudinal beam, cross beam, roof trim
1 引言
行李架从结构分为悬浮式和贴顶式,悬浮式行李架主要由铝管、支座、支座盖板、支座胶垫、螺栓密封垫圈和方头螺栓组成;贴顶式行李架主要由铝管、一体式胶垫、支座、螺栓密封垫圈和方头螺栓组成,以下我们从法规、造型、结构、装配操作、精致性和NVH方面阐述行李架设计开发的注意事项及其原因。
2 法规模块
GB11566-2009《乘用车外部凸出物》中5.16条规定,行李架安装固定后,用一直径为165mm的球体对其进行检验时,其接触表面的圆角半径不小于2.5mm。与其结合处必须圆滑。对于紧固件,用一直径为165mm的球体按5.2.2所述方法进行接触检验,其突出高度不得大于40mm。(车身高度小于1.8m时校核)
3 造型模块
在CAS1阶段要求:确认平台化方案,确定行李架造型风格,确定安装位置和表面处理工艺;CAS2阶段要求:完成工艺工程可行性分析,完成关键主断面绘制(图1),确认CAS1问题全部关闭;CAS3阶段要求:完成细节特征工艺工程分析,模具成型性分析,确认CAS2问题关闭;CAS4阶……
