公开(公告)号：US6042041A

公开(公告)日：2000-03-28

申请号：US252734

申请日：1999-02-19

申请人： Howard John Foster ,  Juergen Arold ,  Tony Jain

发明人： Howard John Foster ,  Juergen Arold ,  Tony Jain

IPC分类号： B60R22/46

CPC分类号： B60R22/4652 ,  B60R22/4633 ,  B60R2022/4657 ,  B60R2022/4661

摘要： A pretensioner for a seat belt system has first and second piston-cylinder arrangements arranged generally one on each side of a spool shaft so that in travelling along the respective cylinder, each piston engages the periphery of the spool shaft and causes it to rotate. A sensor is responsive to a crash situation to detonate a first piston drive means, and means for detonating a drive means for the second piston at the end of the stroke of the first piston. The spool shaft may be a component of a seat belt retractor. Alternatively, the spool shaft is wound with a cable that pulls on a seat belt or seat belt buckle.

摘要翻译： 用于安全带系统的预紧器具有第一和第二活塞 - 气缸装置，其一体地布置在卷筒轴的每一侧上，使得在沿着相应的气缸行进时，每个活塞接合卷筒轴的周边并使其旋转。 传感器响应于碰撞情况以引爆第一活塞驱动装置，以及用于在第一活塞的行程结束时引爆用于第二活塞的驱动装置的装置。 卷筒轴可以是安全带卷收器的部件。 或者，卷线轴用拉出安全带或安全带扣的电缆缠绕。