汽车工程 ›› 2021, Vol. 43 ›› Issue (12): 1780-1786.doi: 10.19562/j.chinasae.qcgc.2021.12.006

• • 上一篇    下一篇

误使用工况下儿童安全座椅安全性的开发与验证

宋祥文1,3,邹猛1,许述财2,3(),黄彬兵3   

  1. 1.吉林大学,工程仿生教育部重点实验室,长春 130022
    2.清华大学,汽车安全与节能国家重点实验室,北京 100084
    3.清华大学苏州汽车研究院(相城),苏州 215133
  • 收稿日期:2021-08-17 出版日期:2021-12-25 发布日期:2021-12-24
  • 通讯作者: 许述财 E-mail:xushc@tsinghua.edu.cn
  • 基金资助:
    国家自然科学基金(51305223)

The Safety Development and Validation of Child Safety Seat Under the Condition of Misuse

Xiangwen Song1,3,Meng Zou1,Shucai Xu2,3(),Binbing Huang3   

  1. 1.Jilin University,Key Lab for Bionics Engineering of Education Ministry,Changchun 130022
    2.Tsinghua University,State Key Laboratory of Automotive Safety and Energy,Beijing 100084
    3.Suzhou Automobile Research Institute(Xiangcheng),Tsinghua University,Suzhou 215133
  • Received:2021-08-17 Online:2021-12-25 Published:2021-12-24
  • Contact: Shucai Xu E-mail:xushc@tsinghua.edu.cn

摘要:

上拉带是ISOFIX型儿童安全座椅抗翻转装置之一,其误使用会降低儿童安全座椅的保护性能。根据GB27887—2011中抗翻转装置在不起作用下进行动态试验的相关要求,提出儿童座椅使用碳纤维增强塑料(CFRP)可增强正面碰撞中上拉带误使用工况对儿童的保护。采用Q系列3岁儿童假人(Q3),通过计算机仿真和台车碰撞试验,对比CFRP儿童安全座椅与普通塑料儿童安全座椅在上拉带误使用工况下儿童假人的损伤。试验结果表明:在上拉带误使用工况下,与普通塑料儿童安全座椅相比,CFRP儿童安全座椅的Q3假人头部前向最大位移量减小了18.49%;胸部加速度降低2.71%,增强了对儿童的保护。

关键词: 汽车被动安全, 儿童安全座椅, 正面碰撞, 碳纤维增强塑料, 误使用

Abstract:

The top tether strap is one of the anti-reversal devices of ISOFIX type child safety seat (CSS), and its misuse will reduce the protective performance of CSS. According to the requirements of the dynamic test with anti-reversal device does not function provisioned in GB27887—2011, the use of carbon fiber reinforced plastics(CFRP)for CSS is proposed to strengthen the protection of children in the condition of the misuse of top tether strap in frontal crash.Both computer simulation and sled collision test are conducted on the Q-series dummy for 3-years-old child (Q3) to compare the injury of child dummy on the CSS of CFRP and the CSS of common plastics in the condition of the misuse of top tether strap. The results of test show that in the condition of the misuse of top tether strap,compared with the CSS of common plastics,the maximum forward displacement of Q3 dummy’s headwith the CSS of CFRP reduces by 18.49% and the chest acceleration of Q3 dummy lowers by 2.71%, strengthening the protection of children.

Key words: vehicle passive safety, child safety seat, frontal crash, carbon fiber reinforced plastics, misuse