Patent ID: 8196962
Filing Date: 2012-06-12
Classification: B60R

Abstract:
1. A pretensioner comprising: a coupling section, a leading end side of the coupling section being either attached to an anchor that is attached to a length direction leading end portion of a webbing belt configuring a seatbelt device, or attached to a buckle for mounting a tongue provided at a length direction intermediate portion of the webbing belt; a pretensioner body, a base end side of the coupling section extending from the leading end side of the coupling section attached to the anchor or the buckle passing through an inside of the pretensioner body; a gas generation section that generates gas by actuation, causing the coupling section to move towards a length direction base end side of the coupling section due to pressure of the gas supplied into the pretensioner body; a seal housing section formed in the pretensioner body on a through passage of the coupling section, the seal housing section having an opening to an external face of the pretensioner body towards a direction that intersects with the length direction of the coupling section passing through an inside of the seal housing section; and a seal section, the seal section being formed with a through hole through which the coupling section passes and being housed in the seal housing section from the opening of the seal housing section in the pretensioner body, the seal section having a press contact portion that, in a state in which the seal section is housed in the seal housing section and the coupling section has been passed through the through hole, is capable of pressing to contact with at least one of an internal wall of the seal housing section or the coupling section, and the seal section sealing between the seal section and at least one of the internal wall of the seal housing section or the coupling section due to the press contact portion pressing at least one of the internal wall of the seal housing section or the coupling section.