Patent ID: 7661701
Filing Date: 2010-02-16
Classification: B60R

Abstract:
1. A curtain airbag device, which is applicable to a window portion having one or more windows, comprising: a curtain including an inflatable portion, the curtain being configured to be accommodated at least at a roof-side of a periphery of the window portion in a folded state and to be inflated so as to cover at least part of the window portion with the inflatable portion to which gas is supplied; a gas supply device operative to supply the gas to the inflatable portion of the curtain; a second-window-side support provided at a specified portion of a second window side and a third-window-side support provided at a specified portion of a third window side, the second window side being a front-side periphery of the window portion, and the third window side being a rear-side periphery of the window portion; a band provided at a side portion of the curtain, a base-end portion of the band connected to a middle portion of the side portion of the curtain and a tip-end portion of the band connected to a portion that is located at a side of a tip portion of the curtain relative to the middle portion of the side portion of the curtain; an engagement portion of the band provided at a side portion of the curtain that is located on a side of the second window side, the engagement portion being configured so as to be located at a position that is closer to the roof-side relative to the second-window-side support in the folded state of the curtain and to be moved toward the second-window-side support so as to engage with the second-window-side support as a tip portion of the curtain moves in an inflation direction according to the inflation of the curtain; and a tether, one end of which is connected to one of the engagement portion and a portion of the curtain near the engagement portion at the second window side, and the other end of which is connected to a peripheral portion of the curtain that is restrained by a specified portion of the periphery of the window portion when the curtain is in an inflated state, the tether being configured so as to be accommodated at the periphery of the window portion with the curtain and to extend according to the inflation of the curtain from a side of the second-window-side support to a side of the specified portion of the periphery of the window portion across the window portion, whereby a tension can be provided to the curtain; wherein said second-window-side support is configured to be located between the side portion of the curtain and the band such that the tip-end portion of the band is located on a side of the second-window-side support that is opposite to the roof-side in the folded state of the curtain and the base-end portion of the band as said engagement portion is moved toward the second-window-side support so as to engage with the second-window-side support according to the inflation of the curtain.