Underactuated Spatial Mechanism of Vehicle Door Latch with Force Constraint

Sulong Li; Lubin Hang; Mingyuan Wang; Xiaojie Huang

doi:10.16578/j.issn.1004.2539.2021.11.014

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Underactuated Spatial Mechanism of Vehicle Door Latch with Force Constraint

Design· Calculation | 更新时间：2022-11-10

- Underactuated Spatial Mechanism of Vehicle Door Latch with Force Constraint
- Journal of Mechanical Transmission Vol. 45, Issue 11, Pages: 85-91(2021)
- 作者机构：
  
  1.上海工程技术大学机械与汽车工程学院，上海 201620
  2.上海市大型构件智能制造机器人技术协同创新中心，上海 201620
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2021.11.014
  CLC：
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李苏龙,杭鲁滨,王明远等.具有力约束的汽车门锁欠驱动空间机构[J].机械传动,2021,45(11):85-91.

Li Sulong,Hang Lubin,Wang Mingyuan,et al.Underactuated Spatial Mechanism of Vehicle Door Latch with Force Constraint[J].Journal of Mechanical Transmission,2021,45(11):85-91.
李苏龙,杭鲁滨,王明远等.具有力约束的汽车门锁欠驱动空间机构[J].机械传动,2021,45(11):85-91. DOI： 10.16578/j.issn.1004.2539.2021.11.014.

Li Sulong,Hang Lubin,Wang Mingyuan,et al.Underactuated Spatial Mechanism of Vehicle Door Latch with Force Constraint[J].Journal of Mechanical Transmission,2021,45(11):85-91. DOI： 10.16578/j.issn.1004.2539.2021.11.014.

摘要

以汽车门锁开启支链占用空间少、高效驱动和高端多功能为目标，对单回路空间机构进行构型综合，得到可实现电动开启的RRRSR机构；针对电动开启支链适应手动开启运动的兼容性需求，减少RRRSR机构运动副约束，得到RRSSR欠驱动机构，使得机构与其他支链的运动兼容；通过对该机构运动副增设扭簧力约束，保证了机构运动柔顺性和稳定性；以特定方向投影进行方程变量降维，使得所构建的空间RRRSR机构运动学方程变量最少，解析求得输入角和输出角关系式。仿真结果表明，具有力约束的汽车门锁RRSSR欠驱动机构既能完成电动开启过程，又能在手动开启工况下具有运动兼容适应性。

Abstract

Aiming at less space occupation，efficient driving and high-end multi-function of the door latch release branch chain，the type synthesis of single loop spatial mechanism is carried out，and the RRRSR mechanism which could realize power release is obtained. In order to meet the requirements of manual release motion compatibility of the power release branch chain，the RRSSR underactuated mechanism is obtained by reducing the kinematic pair constraints of RRRSR mechanism，which make the mechanism have the motion compatibility with other branch chains. By adding a torsion spring force constraint to the kinematic pair of the mechanism，the flexibility and stability of the mechanism are ensured. The dimension of equation variables is reduced by projection in a specific direction，and the kinematic equation variables of the spatial RRRSR mechanism are minimized，and the relationship between input angle and output angle is obtained analytically. The Adams simulation results show that the RRSSR underactuated mechanism with force constraint can not only complete the power release process，but also has the motion compatibility adaptability under the condition of manual release.

关键词

汽车门锁空间机构型综合欠驱动机构动力学仿真

Keywords

Vehicle door latchType synthesis of spatial mechanismUnderactuated mechanismDynamics simulation

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