Gas generator
AssigneeDaicel Corporation
InventorsYuichiro Kawanaka, Shogo Komori, Nobuhiko Yagi
Life of this patent
Estimating the term…
Abstract
A gas generator includes a housing and an igniter assembly defining, together with the housing, an accommodating space in which a gas source is stored. The igniter assembly includes an igniter, a collar member, a resin member integrally joining the igniter and the collar member, and a cover member made of metal, surrounding an ignition portion and the resin member in a manner that the igniter and the resin member are sealed with respect to the accommodating space, and configured to be ruptured when the igniter is actuated. The cover member is welded to the collar member over an entire circumference while straddling a boundary line between the resin member and the collar member.
Claims13
A gas generator, comprising:
- a housing in which an igniter mounting hole is formed;
- and
- an igniter assembly attached to the housing in a manner that the igniter assembly closes the igniter mounting hole, the igniter assembly defining, together with the housing, an accommodating space in which a gas source is stored,
- the igniter assembly being provided with,
- an igniter including an ignition portion provided with an ignition chamber in which an ignition charge is stored and a conductive portion to which an ignition current for igniting the ignition charge is supplied, the igniter being disposed in a manner that the ignition portion is located on an inner side of the accommodating space with respect to the conductive portion, the igniter being configured to be actuated by the ignition current supplied to the conductive portion and thus rupture the ignition portion and release a combustion product of the ignition charge;
- a collar member made of metal, formed in a cylindrical shape, and inserted into the igniter mounting hole in a manner that the collar member surrounds the igniter;
- a resin member made of resin and disposed between the igniter and the collar member, the resin member integrally joining the igniter and the collar member in a state where at least the conductive portion is exposed from the resin member;
- and
- a cover member made of metal, the cover member being provided in its entirety within the accommodating space and surrounding the ignition portion and the resin member in a manner that the igniter and the resin member are sealed with respect to the accommodating space, the cover member being configured to be ruptured when the igniter is actuated,
- the cover member welded to the collar member over an entire circumference while straddling a boundary line between the resin member and the collar member.
A gas generator, comprising:
- a housing defining therein an accommodating space that accommodates therein a gas source;
- and
- an igniter assembly attached to the housing, the igniter assembly being provided with,
- an igniter including an ignition portion provided with an ignition chamber in which an ignition charge is stored and a conductive portion to which an ignition current is supplied, the igniter being disposed in a manner that the ignition portion is located on an inner side of the accommodating space,
- an igniter collar made of metal, formed in a cylindrical shape, and attached to the housing in a manner that the igniter collar surrounds the igniter;
- a resin disposed between the igniter and the igniter collar, and integrally joining the igniter and the igniter collar;
- and,
- a cover made of metal, the cover being provided in its entirety within the accommodating space and surrounding the ignition portion and the resin in a manner that the igniter and the resin are sealed with respect to the accommodating space, the cover welded to the igniter collar over an entire circumference while straddling a boundary between the resin and the igniter collar.
Dependencies are inferred from the claim text.