Patent ID: 6749216
Filing Date: 2004-06-15
Classification: B60R

Abstract:
An air bag device comprising:a bag body having at least one expansion chamber and a gas passage extending in a longitudinal direction of a vehicle body and communicating with the at least one expansion chamber; an inflator ejecting an expansion gas in the bag body through a gas ejection port; a flexible inner tube provided in the gas passage and supplying the expansion gas into the expansion chamber through at least one gas outlet hole; and a pipe coupled to the gas ejection port and extending in an axial direction of the flexible inner tube, the pipe including a leading end protruding into the inner tube, wherein an inner diameter of the pipe is less than an outer diameter of the gas ejection port, and a length of the pipe is less than a distance between a rear end of the pipe and the at least one gas outlet hole, and wherein the inner diameter of the pipe becomes less at a predetermined point along the length thereof and remains less along the length thereof from the predetermined point to the leading end.