驻车操纵手柄噪音的分析和改进  

Analysis and Improvement of Parking Control Handle Noise

作　　者：梁维亚 LIANG Weiya(Geely Automobile Research Institute,Ningbo 315336,China)

机构地区：[1]吉利汽车研究院,浙江宁波315336

出　　处：《汽车实用技术》2022年第10期88-94,共7页Automobile Applied Technology

摘　　要：随着人们对车辆NVH的要求越来越高,对驻车操纵手柄的NVH的要求也越来越严格。文章从驻车操纵手柄噪音的种类、产生原理、影响因素、优化方法及案例等几方面进行阐述。主要对驻车操纵手柄常见的三种噪音做深入浅出的分析。对于敲齿声,通过减小按钮回位弹簧的弹力,从11 N±1 N减小到7 N±1 N;棘爪及齿板两侧增加润滑脂的涂抹量由3 g增加到6 g,润滑脂使用进口油脂,敲齿声从58 dB降低到55 dB。对于解锁噪音,通过在棘爪限位结构外侧包裹橡胶垫改善硬解锁噪音,棘爪和限位结构的铁碰铁更改为铁碰橡胶,通过装车验证,硬解锁声音的品质改善比较明显。对于敲鼓声,通过在限位铆钉上包裹衬套,经过验证对敲鼓声的声音强度和品质有一定改善,噪音强度从改善前60 dB降低到50 dB左右。经过一系列措施,驻车操纵手柄的噪音进行了大幅度改善,获得了很好的NVH效果。With higher requirements for vehicle NVH,the NVH requirements for parking control handle are more and more strict.This paper expounds the noise types,generation principle,influence factors,optimization methods and cases of parking control handle.This paper mainly analyzes three kinds of common noises of parking control handle.For the tapping sound,the spring force of the button return spring is reduced from 11 N±1 N to 7 N±1 N by reducing the spring force of the button return spring.Increasing grease smear amount from 3 g to 6 g on both sides of pawl and gear plate,grease is imported grease,and knock sound is reduced from 58 dB to 55 dB.As for the unlocking noise,the unlocking noise was improved by wrapping rubber pad on the outside of the pawel limit structure.The iron touch of the pawel and the limit structure was changed to iron touch rubber.Through the verification of loading,the quality of the hard unlocking sound was significantly improved.As for drumming sound,the sound intensity and quality of drumming sound have been improved by wrapping bushing on the limit rivet,and the noise intensity has been reduced from 60 dB to 50 dB.After a series of measures,the noise of parking control handle has been greatly improved,and a good NVH effect has been obtained.

关 键 词：驻车系统 驻车操纵手柄 噪声性能 改进方案 改进效果 

分 类 号：U463.5[机械工程—车辆工程]