门护板定位销漏水问题的研究与改进措施  

Research and Improvement of Water Leakage in the Positioning Pin of the Door Trim

作　　者：张超 樊友嗣[1] 段小草[1] 陈思茹 朱毅 Zhang Chao;Fan Yousi;Duan Xiaocao;Chen Siru;Zhu Yi(Dongfeng Peugeot Citroen Automobile Co.,Ltd.,Wuhan 430056)

机构地区：[1]神龙汽车有限公司,武汉430056

出　　处：《汽车工程师》2023年第4期42-48,共7页Automotive Engineer

摘　　要：为解决某车型在试装阶段门护板定位销漏水问题,从车门系统的水管理、门护板的定位方式、门护板的密封结构、密封件材料等方面查找原因,获得具体原因是穿过车门钣金定位孔的定位销处于水流量较大的冲击环境中,封堵钣金孔的定位销密封垫块对钣金的压缩量较小,水的重力和冲击力大于密封垫块的密封力,水将密封垫块挤开并沿着密封垫块流到门护板内部。研究了门护板定位销密封件泡沫垫块的受力与形变,增加定位销泡沫垫块的厚度并提高定位销基座对定位销泡沫垫块的支撑率,使得定位销密封垫块对钣金的压缩量增大,保证泡沫垫块的密封力大于水对其的推力,解决了该缺陷,并优化了门护板定位和水管理的设计校核标准。In order to solve the defect of water leakage of the positioning pin of the door trim during the trial assembly stage of a vehicle model,this article searched for the cause from water management of the door system,positioning method of the door trim,sealing structure of the door trim,and seal material.It is found that the positioning pin through the door sheet metal locating hole is impacted by large water flow,and the sealing pad of the positioning pin blocking the sheet metal hole has less compression on the sheet metal,the gravity and impact force of water is greater than the sealing force of the sealing pad,water pushes the sealing pad apart and flows along the sealing pad to the inside of the door trim.The stress and deformation of the foam cushion block of the positioning pin seal of the door trim were studied.Increasing the thickness of the foam cushion block of the locating pin and increasing the support rate of the positioning pin base to the foam cushion block of the positioning pin will increase the compression of the positioning pin seal cushion block to the sheet metal,and make sure the sealing force of the foam cushion block is greater than the thrust of water on it,the defect was thus solved,and the design and verification criteria for the door trim board positioning and water management were optimized.

关 键 词：门护板 定位销 泡沫垫块 水管理 

分 类 号：U463.834[机械工程—车辆工程]