公开(公告)号：US20130193252A1

公开(公告)日：2013-08-01

申请号：US13787876

申请日：2013-03-07

Applicant: Autoliv Development AB

Inventor： Andreas Lucht ,  Matthias Borgward ,  Sebastien Baudinet

IPC: B60R22/46

CPC classification number: B60R22/46 ,  B60R2022/4666

Abstract: A reversible seat belt tensioner includes an electric motor (2), a belt shaft (1) drivable in the belt winding direction by the electric motor (2) via a drive wheel (10), and a drive shaft (9) transmitting the rotational movement of the electric motor (2) to the drive wheel (10). The drive shaft (9) is connected to at least one of the drive wheel (10) and the electric motor (2) via a helical gear unit. The teeth of the helical gear unit make point-shaped contacts with each other, and the drive shaft (9) is axially movable relative to the electric motor (2) or the drive wheel (10) without disengaging the gear teeth.

Abstract translation: 可逆安全带张紧器包括电动机（2），经由驱动轮（10）由电动机（2）沿带缠绕方向驱动的带轴（1）和传动旋转的驱动轴（9） 电动机（2）向驱动轮（10）的移动。 驱动轴（9）通过斜齿轮单元与至少一个驱动轮（10）和电动马达（2）连接。 螺旋齿轮单元的齿彼此形成点状接触，并且驱动轴（9）可相对于电动马达（2）或驱动轮（10）轴向移动而不使齿轮齿脱离。