Tablet, Gas Generator and Gas Generating Device and Manufacturing Method Thereof

A gas generator, comprising a generator body having an accommodating chamber, wherein an ignition chamber configured for installing an ignition assembly, a gas generating chamber configured for installing a gas generating assembly, and a gas discharging chamber configured for installing an gas discharging assembly are disposed in sequence in the accommodating chamber;

• the ignition assembly comprises an igniter and a first accommodating groove configured for placing the ignition tablet, a side of the first accommodating groove near the igniter is provided with a first through hole, wherein the igniter is located at one end of the generator body, and the first accommodating groove is located between the igniter and the gas generating assembly;
• the gas generating assembly comprises a second accommodating groove configured for placing a gas generating tablet and a buffer provided with a plurality of vent holes, the buffer comprises an accommodating chamber with one end opened, and one side of the second accommodating groove close to the first accommodating groove is provided with a second through hole, the second accommodating groove is located between the first accommodating groove and the buffer, and the buffer is located between the second accommodating groove and the gas discharging assembly, wherein gas generated by the gas generating assembly flows into the gas discharging chamber after flowing through the accommodating chamber of the buffer from the vent holes on the buffer;
• and
• the gas discharging assembly comprises a sealing element disposed on an inner wall of the generator body, and a gas-discharging end cover disposed at the other end of the generator body, the gas-discharging end cover is provided with a plurality of gas discharging holes, and the sealing element is located between the buffer and the gas-discharging end cover, and is connected with the inner wall of the generator body.

The gas generator of 5, wherein the tubular generator body is tubular;

• an ignition assembly is installed in the ignition chamber, a gas generating assembly is installed in the gas generating chamber, and a gas discharging assembly is installed in the gas discharging chamber;
• the buffer is in a cup-shaped structure comprising a bottom wall and a side peripheral wall and having an opening toward the gas-discharging end cover, wherein the inner wall of the generator body and the side peripheral wall are spaced apart from each other, and the bottom wall and the side peripheral wall of the buffer are each provided thereon with a plurality of the vent holes which are through holes;
• the gas-discharging end cover is in an inverted cup-shaped structure having an opening toward the generator body, wherein an edge of the opening is radially expanded and sealed to connect to the inner wall of the generator body, and the gas discharging holes are provided at a peripheral wall of the gas-discharging end cover, and each have an outlet facing in a direction perpendicular to an axial direction of the generator body;
• an ignition box with one end opened and a partition plate disposed at the open end of the ignition box are disposed in the first accommodating groove, a buffer chamber is defined by the partition plate and the ignition box, the ignition box and the partition plate are each provided with a plurality of third through holes, and a second elastic element is elastically supported between the ignition box and the gas generating assembly;
• and
• the third through holes located on the partition plate are one-to-one corresponding in position to the third through holes located on the ignition box in the axial direction, and communicate with the ignition chamber and the gas generating chamber.

A method of manufacturing a gas generating device,

• comprising following steps:
• providing a tubular generator body in which an end in an axial direction is narrowed;
• and
• placing an ignition assembly into an accommodating chamber of the generator body from the other end of the generator body, and confining an igniter of the ignition assembly axially to the narrowed end;
• then placing in sequence a buffer and a gas generating assembly with gas generating tablets;
• and then welding one gas-discharging end cover to the other end of the generator body, wherein the gas generating assembly and the buffer are elastically pressed, by an elastic element, against the igniter or the gas-discharging end cover fixedly connected to the generator body, and a passage from the igniter to a gas discharging outlet of the gas-discharging end cover is kept clear.