张超 樊友嗣 鲁宇鹏












摘要:本文分析了某款车型在侧碰中,由于门护板连接钣金的普通塑料卡扣连接力较小,碰撞冲击力较大,门护板易弹出对乘员造成伤害,因此设计了防撞卡扣。门护板防撞卡扣作为门护板和钣金的重要连接件,在车门侧碰中起到连接和缓冲作用,防止汽车侧碰时,门护板的塑料卡扣脱出而导致的门护板与乘员发生碰撞。本文介绍了某车型车门装配线装配门护板时,门护板防撞卡扣和钣金卡扣座孔不对中,防撞卡扣不能装入,导致门护板边缘和钣金间隙大。通过分析,对防撞卡扣定位结构进行改进设计,使其满足对中要求。
关键词:门护板;防撞卡扣;设计;对中
中国分类号:U463.83 文献标识码:A 文章编号:1005-2550( 2021) 06-0032-05 Improved Design For Misalignment Of Door Trim Anti-collision
Buckle And Sheet Metal Buckle Base Hole
ZHANG Chao, FAN You-si, LU Yu-peng
( Dongfeng Peugeot Citroen Automobile Company LTD. Wuhan430056, China)
Abstract: This paper analyzes the side collision of a certain model. Because the ordinaryplastic buckle connecting the door guard plate to the sheet metal has a small connection forceand a large impact force, the door guard plate is easy to pop up and cause damage to theoccupants. Therefore, an anti-collision buckle is designed. The door guard plate anti-collisionbuckle, as an important connecting piece between the door guard plate and the sheet metal,plays a role of connection and buffering in the side collision of the car door, and prevents thedoor guard from coming out of the plastic buckle of the door guard plate when the car is hit bythe side. The board collided with the occupant. This article introduces that when assemblingthe door guard plate on the door assembly line of a certain vehicle model, the door guardplate anti-collision buckle and the sheet metal buckle seat hole are not centered, and the anti-collision buckle cannot be installed, resulting in a large gap between the edge of the doorguard plate and the sheet metal. Through analysis, the anti-collision buckle positioningstructure is improved and designed to meet the centering requirements.
Key Words: Door Trim; Anti-collision Buckle; Design; Centering
門护板也称为车门内饰板,主要由结构部件、功能部件以及装饰部件等三部分构成,是组成汽车内饰系统的重要部分,它的最主要功能是包覆住车门金属内板,起到美观装饰的作用[1]。防撞卡扣是门护板重要的卡扣类零件,起到连接钣金和门护板的作用。
1 整车侧碰门护板的弹开分析
在某次整车侧碰试验中,门护板发生了弹出的现象,如图1所示。门护板的弹出,对乘员造成了伤害。
在新版本C-NCAP的规定中,增加了侧面碰撞壁障的重量,因此对前后门结构的防撞性能具有更高的要求。现有技术中,汽车驾驶室车门内饰护板与车门钣金装配的时候,通常采用塑料卡扣进行连接,一个车门内饰护板总成的边上大约使用8个左右的塑料卡扣与车门钣金相连,塑料卡扣的工作原理通常是,通过安装在车门内饰护板上的卡扣卡头变形,挤入到车门钣金的安装孔中,然后卡头恢复进行卡止。……