Dual cycloid gear mechanism for automobile safety pretensioners

作     者：SHIN Joong-ho KIM Chang-hyun YUN Pyeong-hwa KWON Soon-man 

作者机构：Department of Mechanical Design and Manufacturing Changwon National University 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2012年第19卷第2期

页      面：365-373页

核心收录：

学科分类：08[工学] 082303[工学-交通运输规划与管理] 082302[工学-交通信息工程及控制] 0823[工学-交通运输工程] 

基　　金：supported by the Changwon National University in 2011-2012 Korea 

主　　题：seat belt pretensioner internal gear pairs involute gear dual cycloid gear 

摘      要：The most conventional vehicle pretensioner system consists of an internal gear pair with involute teeth. However, it has been well known that the corresponding gear pairs are relatively weak under the situation of impact loadings. To improve this phenomenon, a new pretensioning gear system with cycloid teeth rather than the involute ones was proposed, and dual cycloidal gear mechanisms were designed for satisfying geometric constraints and dynamic loading conditions. The simulations of the prototypes were conducted by LS-DYNA program and the experiments for a prototype were performed for a dynamic model with impact loading devices. The results show that the better operation and the smoother motion are confirmed in the proposed cycloidal gear system rather than the conventional one without interferences between gear teeth under the impact of a crash.