某车型关门时安全带卷收器异响问题分析和优化  

Analysis and optimization on abnormal noise caused by retractor when closing the door of a vehicle

作　　者：张浩 饶刚 高小清 屈少举 邓休 ZHANG Hao;RAO Gang;GAO Xiaoqing;QU Shaoju;DENG Xiu(Dong Feng Motor Corporation Technical Center,Wuhan 430056,China)

机构地区：[1]东风汽车集团股份有限公司技术中心,武汉430056

出　　处：《应用声学》2024年第6期1230-1235,共6页Journal of Applied Acoustics

摘　　要：针对某车型在关门时车内出现的振颤异响问题,识别车内异常噪声产生原因为关门产生振动激励,经车身和安全带卷收器固定支架传递至卷收器本体,并引起卷收器内部异响。建立了车身和卷收器的系统动力学模型,分析了卷收器安装支架对振动传递特性的影响,完成了卷收器单体在台架上响度随频率变化的试验,获得了卷收器单体噪声的敏感频率。通过合理优化卷收器安装支架刚度,将振动传递峰值与卷收器敏感频率避开,有效地改善了异响问题,为同类问题的分析和优化提供了参考。Aiming at the issue of vibration and abnormal noise of a certain vehicle when closing the door,which was identified the cause was the vibration excitation generated by closing the door,then transmitted to the retractor through the body and seat belt bracket,and caused abnormal noise inside the retractor.A system dynamics model of the vehicle body and the retractor was established,and the impact of the installation bracket of the retractor on vibration transmission characteristics was analyzed.The loudness test of the belt retractor was completed with sweep excitation,and obtained the sensitive frequency of the belt retractor.By reasonably designed the stiffness of the seat belt bracket of the retractor,the vibration transmission peak is avoided from the sensitive frequency of the retractor,and the problem of abnormal noise is significantly improved.It provides a reference for the analysis and optimization of similar problems.

关 键 词：关门 卷收器 异响 振动传递 

分 类 号：TB535[理学—物理]