| 摘要 |
Disclosed herein is a gas exhaust device of a retractor pretensioner for a vehicle, including a pinion connected to a belt weaving spool in a retractor body; a rack linearly transferred when engaged with the pinion; a rack transfer path formed between a pretensioner body and the retractor body, configured to guide the rack linearly toward the pinion; and a micro-gas generator (MGG) mounted on a side of a lower end of the pretensioner body to elevate the rack toward the pinion using gas generated by the MGG, wherein a gas moving aperture is formed to allow communication between an upper portion and a lower portion of the rack transfer path in a longitudinal direction in the rack, to elevate the rack using the gas generated from the MGG and simultaneously, move the rack toward the upper portion of the rack transfer path through the gas moving aperture. |
