US 12,214,741 B2
Gas generator
Tomoya Shimizu, Himeji (JP); Shinya Ueda, Himeji (JP); Haruki Takizawa, Himeji (JP); and Yuji Inoue, Himeji (JP)
Assigned to NIPPON KAYAKU KABUSHIKI KAISHA, Chiyoda-ku (JP)
Appl. No. 18/550,490
Filed by NIPPON KAYAKU KABUSHIKI KAISHA, Chiyoda-ku (JP)
PCT Filed Feb. 16, 2022, PCT No. PCT/JP2022/006140
§ 371(c)(1), (2) Date Sep. 14, 2023,
PCT Pub. No. WO2022/196228, PCT Pub. Date Sep. 22, 2022.
Claims priority of application No. 2021-046137 (JP), filed on Mar. 19, 2021; and application No. 2021-202541 (JP), filed on Dec. 14, 2021.
Prior Publication US 2024/0149824 A1, May 9, 2024
Int. Cl. B60R 21/264 (2006.01); C06D 5/00 (2006.01)
CPC B60R 21/264 (2013.01) [C06D 5/00 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A gas generator comprising:
a cylindrical housing main body made of metal, the housing main body containing a combustion chamber where a gas generating agent is accommodated;
a holder assembly inserted in an opening end in an axial direction of the housing main body, the holder assembly including a hollow opening like a through hole, the hollow opening extending along a direction in parallel to the axial direction of the housing main body; and
an igniter including an ignition portion where an ignition agent is accommodated and a terminal pin connected to the ignition portion, at least a part of the igniter being arranged in inside of the hollow opening while the ignition portion is located on a side of the combustion chamber and the terminal pin is located opposite to the side of the combustion chamber, wherein
the holder assembly includes
a holder portion made of metal, the holder portion being located on the side of the combustion chamber, the holder portion receiving and holding the igniter, and
a connector portion made of resin, the connector portion being located opposite to the side of the combustion chamber, the connector portion receiving a connector connected to the terminal pin,
the holder portion includes
a first barrel portion in a cylindrical shape that defines the hollow opening, and
an annular projection that projects from the first barrel portion along a radial direction of the housing main body,
the connector portion includes
a second barrel portion in a cylindrical shape that defines the hollow opening, and
a cylindrical portion that extends from the second barrel portion toward the combustion chamber,
the cylindrical portion is inserted in the opening end of the housing main body and externally attached to a portion of the first barrel portion located opposite to the side of the combustion chamber when viewed from the annular projection, and
a portion of the housing main body corresponding to the cylindrical portion is decreased in diameter radially inward, so that the cylindrical portion is compressed by being sandwiched between the portion of the housing main body decreased in diameter and the first barrel portion to seal a gap between the housing main body and the first barrel portion.