Patent ID: 9162647
Filing Date: 2015-10-20
Classification: B60R

Abstract:
1. A pretensioner that is used in a vehicle seat belt device and pulls a seat belt, the pretensioner comprising: a cylinder; a gas generator that supplies gas into the cylinder; a piston that is moved in the cylinder by the gas supplied from the gas generator; a wire that is connected to the piston and the seat belt and pulls the seat belt when the piston moves; and connecting means for connecting the wire to the piston, wherein the wire has both ends that are connected to the seat belt and has a folded portion that is formed between the both ends and is connected to the piston, and the connecting means includes a connecting hole that is formed in the piston and through which the folded portion of the wire passes, and includes a detachment preventing member positioned between the folded portion and the piston to prevent the folded portion from being detached from the connecting hole.