US 12,403,860 B2
Gas generator
Masahiro Takahashi, Himeji (JP); and Yuichiro Tanaka, Himeji (JP)
Assigned to NIPPON KAYAKU KABUSHIKI KAISHA, Tokyo (JP)
Appl. No. 18/708,101
Filed by NIPPON KAYAKU KABUSHIKI KAISHA, Tokyo (JP)
PCT Filed Nov. 25, 2022, PCT No. PCT/JP2022/043639
§ 371(c)(1), (2) Date May 7, 2024,
PCT Pub. No. WO2023/112643, PCT Pub. Date Jun. 22, 2023.
Claims priority of application No. 2021-202709 (JP), filed on Dec. 14, 2021; and application No. 2022-050925 (JP), filed on Mar. 25, 2022.
Prior Publication US 2024/0351549 A1, Oct. 24, 2024
Int. Cl. B60R 21/264 (2006.01); B60R 21/26 (2011.01)
CPC B60R 21/264 (2013.01) [B60R 2021/26011 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A gas generator comprising:
a housing being cylindrical and being loaded with a gas generating agent that generates a gas by burning, the housing including a filter inside through which the gas passes, and having a gas ejection port that ejects the gas formed at a position corresponding to the filter;
an igniter capable of igniting and combusting the gas generating agent;
a holder being tubular and holding a part of the igniter, the holder being fixed to a first end portion of the housing in an axial direction; and
a closing member fixed to a second end portion of the housing in the axial direction,
wherein the holder includes:
a first holder being tubular and disposed on a side of the first end portion of the housing and capable of fitting an external connector that energizes the igniter on the side of the first end portion of the housing,
a second holder being tubular and disposed on an inner side of the housing of the first holder in a state of being in contact with the first holder, an outer diameter of at least a contact portion, in contact with an inner wall of the housing, of the second holder is larger than an outer diameter of the first holder on a side of an end portion of the second holder or the outer diameter of at least the contact portion in contact with the inner wall of the housing of the second holder is same as the outer diameter of the first holder on the side of the end portion of the second holder, and
a third holder being tubular and including, on an outer side surface, at least a small-diameter portion having a diameter smaller than a diameter of an end portion on a side opposite to a side of the second holder, and disposed on an inner side of the housing with respect to the second holder in a state of being in contact with the second holder, and
a portion of the contact portion of the second holder corresponding to a portion on a side of the first holder and a portion corresponding to the small-diameter portion of the third holder are subjected to diameter reduction processing from an outer side of the housing, and the holder is fixed to the housing by sandwiching at least a portion of the first holder in contact with the second holder and a portion of the third holder in contact with the second holder together with the second holder with a portion of the housing subjected to the diameter reduction processing.