气弹簧力导致某SUV车型后举门变形的分析与解决
2020-10-21孙相龙
孙相龙



摘 要:后举门钣金由于柔性大、刚性弱等特点,在气弹簧力的作用下会产生变形,影响实车尺寸匹配。文章以气弹簧力导致某SUV车型后举门变形的问题为实例,系统性分析解决后举门气弹簧变形这一实际生产问题。通过后举门气弹簧变形试验收集气弹簧力导致后举门变形量,并实施后举门整体位移、后举门钣金局部反变形方案妥善解决气弹簧力导致的后举门变形问题,为此类问题的分析与解决提供了可行性方案。
关键词:后举门;气弹簧;整体位移;反变形
Abstract: The metal plate of lift gate, with large flexibility, weak rigidity character and so on, can be deformed by the gas spring force, which will affect the dimension matching of the real car. This article takes the problem of gas spring force deformation of lift gate for an SUV, and systematically analyzes the actual production problem of gas spring force deformation of lift gate. The deformation of lift gate is collected through the lift gate gas spring deformation test. The solutions including the overall displacement and anti-deformation of lift gate are implemented, which properly solve the deformation caused by the gas spring force. This article provides guidance for the analysis and solution of such problem.
Keywords: Lift gate; Gas Spring; Displacement; Anti-deformation
前言
随着人们对美好生活的向往需求日益增加,汽车逐渐成为人们生活中的消费必需品,同时用户对汽车的外观造型和内外饰匹配质量的要求也越来越高。市场上SUV、MPV等车型普遍采用气弹簧作为掀背式后举门实现开启、关闭功能的关键零部件[1]。传统后举门大多采用柔性大、刚性弱的金属薄板制作,装配气弹簧后,在较大气弹簧力的作用下,后舉门会产生变形,难以保证实车尺寸匹配精度[2, 3]。针对这一问题,有学者提出了一些解决方案,主要包括:(1)后举门钣金结构加强;(2)优化气弹簧在后举门区域的布置[4];(3)通过提升后举门刚度同时实现轻量化[5];(4)后举门钣金预变形[6]等。
本文以气弹簧力导致某SUV车型后举门变形的问题为实例,通过前期试验数据收集与对比,量化气弹簧力所造成的后举门变形量,并结合后举门制造工艺特点,从尺寸工程角度针对性提出可行性解决方案,通过理论与实践相结合,最终在实际造车过程中进一步验证了方案的有效性。……
