Ignition system and method for manufacturing the same, gas generator and safety airbag
AssigneeYanfeng International Automotive Technology Co., Ltd.
InventorsJiayang Qi, Xinglun Ren, Zhujun Sun, Junjie Li
Life of this patent
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Abstract
An ignition system (10) for a gas generator comprises an ignition tube (1); a base (2) having a receptacle (23), wherein the ignition tube (1) is press-fitted into the receptacle (23) and extends out of the base (2) with its head (11), and the base (2) is configured as an integral injection-molded part, wherein a metal inlay (4) is injection-molded into a plastic material, and the inlay (4) provides a portion of the receptacle (23); and a container (3) having an opening (33), through which the base (2) together with the ignition tube (1) is press-fitted into the container (3), with the head (11) of the ignition tube (1) facing forward.
Claims18
An ignition system for a gas generator, comprising an ignition tube, wherein the ignition system further comprises:
- a base having a receptacle, wherein the ignition tube is press-fitted into the receptacle and extends out of the base with its head, wherein the base is configured as an integral injection-molded part, wherein a metal inlay is injection-molded into a plastic material, wherein the inlay provides a portion of the receptacle;
- and
- a container having an opening, through which the base together with the ignition tube is press-fitted into the container, with the head of the ignition tube facing forward,
- the ignition system being a structural unit to be mounted to a housing of the gas generator,
- wherein the metal inlay is configured as a metal disc or comprises the metal disc, wherein the metal disc has a central receiving hole which provides the portion of the receptacle,
- wherein the central receiving hole comprises a first cylindrical hole section adjacent to a first side of the metal disc, and a second tapered hole section adjacent to the first cylindrical hole section and widened towards a second side of the metal disc opposite to the first side, and the plastic material of the base defines a third cylindrical hole section adjacent to the second tapered hole section.
An ignition system for a gas generator, comprising an ignition tube, wherein the ignition system further comprises:
- a base having a receptacle, wherein the ignition tube is press-fitted into the receptacle and extends out of the base with its head, wherein the base is configured as an integral injection-molded part, wherein a metal inlay is injection-molded into a plastic material, wherein the metal inlay provides a portion of the receptacle;
- and
- a container having an opening, through which the base together with the ignition tube is press-fitted into the container, with the head of the ignition tube facing forward,
- the ignition system being a structural unit to be mounted to a housing of the gas generator,
- wherein the metal inlay is configured as a metal disc or comprises the metal disc, wherein the metal disc has a central receiving hole which provides the portion of the receptacle, wherein in addition to the metal disc, the metal inlay further comprises a hollow cylindrical metal handle connected with the metal disc,
- wherein the base comprises a first section, and a second section adjacent to the first section and having a reduced diameter in comparison with the first section, wherein the metal disc of the metal inlay is embedded in the plastic material of the first section, the hollow cylindrical metal handle of the metal inlay surrounds and defines the second section, and the plastic material is injection-molded on an inner peripheral surface of the hollow cylindrical metal handle of the metal inlay and thus forms a cavity, wherein the plastic material in the first section and the plastic material in the second section of the base are integrally connected.
Dependencies are inferred from the claim text.