公开(公告)号：US20240416863A1

公开(公告)日：2024-12-19

申请号：US18333896

申请日：2023-06-13

Applicant: AUTOLIV ASP, INC.

Inventor： Bin WANG ,  Christopher D. HALL ,  Jon E. BURROW ,  Ken KOHLNDORFER

IPC: B60R22/46

Abstract: A seatbelt pretensioner system includes a pretensioner tube in fluid communication with a gas generator and a pretensioner rod having a proximal end portion disposed toward the gas generator and a distal end portion disposed at an exit of the pretensioner tube. The pretensioner rod is disposed inside the pretensioner tube in a pre-actuation state and adapted to travel within the pretensioner tube toward a pretensioner wheel upon an actuation of the gas generator in a post-actuation state. The pretensioner rod includes a protrusion formed in a radial direction of the rod to couple with the pretensioner tube to restrict the rod from moving out from the pretensioner tube in the pre-actuation state. The pretensioner rod is configured to avoid the stripping of the rod and reduce energy consumption when the polymer rod is deformed during pretensioning.