CN217892765U

CN217892765U - Cold air type gas generator for side air bag

Info

Publication number: CN217892765U
Application number: CN202221406100.0U
Authority: CN
Inventors: 万展; 王威
Original assignee: Jun Sheng Automotive Safety System Changxin Co ltd
Current assignee: Jun Sheng Automotive Safety System Changxin Co ltd
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-11-25
Anticipated expiration: 2032-06-08

Abstract

The utility model discloses a cold air type gas generator for side airbag. It includes the body, the both ends of body are sealed and its inside inert gas that is equipped with, be equipped with diffusion structure on the body, the inside of body is linked together through the outside of diffusion structure and body, still be equipped with on the body with diffusion structure assorted weakening part, the inside of body is separated by through the outside of weakening part and body and is insulated, inert gas passes through the inside of weakening part storage at the body, still be equipped with on the body with weakening part assorted ignition. The utility model has the advantages that: the product has stable performance and can be quickly inflated; the structure is simple, the assembly is convenient, the number of parts is small, and the cost is low; the air exhaust port and the detonation port are arranged at the same end, so that the air bag is unfolded in advance, and the safety of passengers is protected more effectively; the size is small, and the installation is convenient; the control is convenient, the response speed is high, and the inflation rate is improved.

Description

Cold air type gas generator for side air bag

Technical Field

The utility model belongs to the technical field of the relevant technique of gas generator and specifically relates to indicate a cold air gas generator for side gasbag.

Background

The automobile safety air bag mainly comprises a controller (ECU), an air bag module, a gas generator, a wire harness and the like. An automobile side impact air bag (SAB), referred to simply as a side air bag, is mounted on the outside of a seat to mitigate injury caused by side impact. When the automobile collides, the ECU judges the collision degree, transmits and sends signals; the SAB gas generator generates an ignition action according to the signal indication, ignites the solid fuel and generates gas to inflate the side air bag, so that the side air bag is rapidly expanded, and the safety of a driver and a passenger in a secondary driver is protected. According to the latest research and analysis of the airbag market, the installation requirements of the automobile market for the side airbag are continuously increased, the side airbag is required to be capable of directly fully inflating the airbag in a short time, and the gas generator is required to release gas at a higher speed.

Chinese patent grant publication no: CN215752300U, granted bulletin day 2022, 02 month and 08 day, discloses a pyrotechnic gas generator for a side airbag, which comprises an igniter base, an igniter, a gas producing medicine, a gas guide cover, a shell and an end cover; the ignition tool seat is connected to the rear end of the interior of the shell, and the ignition tool is arranged at the front end of the ignition tool seat; the air guide hood is in a cylinder shape with an opening at the front end, and is inserted into and fixedly connected with the inner front end of the shell; the air guide cover is provided with a plurality of air guide holes; the end cover covers the front end opening of the shell and is fixedly connected with the shell; the end cover is provided with a plurality of exhaust holes; the gas producing medicine is filled in the shell between the igniter and the gas guide cover. The patent has the disadvantages that the gas producing medicine is used as a gas source, and the influence of the environment on gunpowder is difficult to avoid, so that the performance of the product is fluctuated in a certain range, and the inflation rate is unstable due to the limited characteristic of the gas producing medicine.

In view of the foregoing, there is a need for a cold gas generator for a side airbag that is capable of providing stable product performance.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an overcome among the prior art gas generator with produce gas medicine as the gas source, owing to be subject to the characteristic of producing gas medicine, hardly avoid because the influence of environment to the influence of gunpowder, can cause undulantly to the performance of product in certain within range, lead to the not enough of inflation rate unstability, provide one kind and produce the product can be stable and can quick aerate cold air type gas generator for the side gasbag.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a cold air type gas generator for side gasbag, includes the body, the both ends of body are sealed and its inside inert gas that is equipped with, be equipped with diffusion structure on the body, the inside of body is linked together through the outside of diffusion structure and body, still be equipped with on the body with diffusion structure assorted weakening part, the inside of body is separated by the outside of weakening part and body absolutely, inert gas passes through the inside of weakening part storage at the body, still be equipped with on the body with weakening part assorted ignition.

The igniter generates shock waves after receiving the electric pulse signals, and the weakening part is opened, so that the compressed inert gas in the pipe body is released into the side air bag through the diffusion structure. By adopting the inert gas to replace the gas producing medicament, the influence on the performance of gunpowder caused by the influence of the environment is avoided, the product performance is very stable, the ignition process of the gas producing medicament is reduced, and the gas can be quickly released into the side airbag.

Preferably, the diffusion structure includes a vent hole provided on a sidewall of the tube body. Simple structure and low processing cost.

Preferably, the weakening element is located inside the tube body and separates the inert gas from the vent hole. Simple structure, the equipment is convenient, and part quantity is less, and the cost is lower.

Preferably, the vent hole and the ignition device are both disposed on the same side of the weakening element. The air exhaust port and the detonation port are arranged at the same end, so that the air bag is expanded in advance, and the safety of passengers is protected more effectively.

Preferably, the igniter comprises an igniter container mounted at one open end of the tube body, the igniter container and the tube body are connected in a sealing manner, an igniter body and an igniter head which are connected with each other are arranged on the igniter container, the igniter body is arranged inside the tube body and faces the weakening part, and the igniter head is arranged outside the tube body. When the gas bag is ignited, the electric spark triggers the ignition head to generate an electric pulse signal to the igniter body, so that the igniter body generates shock waves to break and weaken the parts, and at the moment, the compressed inert gas in the pipe body can be quickly released into the gas bag through the vent holes. The air inflation device is simple in structure, small in size, convenient to install, convenient to control, high in response speed and capable of improving the air inflation speed.

Preferably, the other opening end of the tube body is provided with a sealing cover, the sealing cover is in sealing connection with the tube body, the sealing cover is provided with a convex ball, and the convex ball is arranged outside the tube body. Through the design of the convex ball, the installation and positioning functions of the gas generator are achieved, and the pipe body is convenient to install on an automobile.

The utility model has the advantages that: the product has stable performance and can be inflated quickly; the structure is simple, the assembly is convenient, the number of parts is small, and the cost is low; the air exhaust port and the detonation port are arranged at the same end, so that the air bag is unfolded in advance, and the safety of passengers is protected more effectively; the size is small, and the installation is convenient; the control is convenient, the response speed is high, and the inflation rate is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. the ignition device comprises an ignition device, a tube body 2, a convex ball 3, a sealing cover 4, an inert gas 5, a weakening part 6, an exhaust hole 7, an ignition device body 8, an ignition device container 9 and an ignition head 10.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

In the embodiment shown in fig. 1, the cold gas type gas generator for the side airbag comprises a tube body 2, two ends of the tube body 2 are sealed, inert gas 5 is arranged in the tube body 2, a diffusion structure is arranged on the tube body 2, the inside of the tube body 2 is communicated with the outside of the tube body 2 through the diffusion structure, a weakening part 6 matched with the diffusion structure is further arranged on the tube body 2, the inside of the tube body 2 is isolated from the outside of the tube body 2 through the weakening part 6, the inert gas 5 is stored in the tube body 2 through the weakening part 6, and an igniter 1 matched with the weakening part 6 is further arranged on the tube body 2.

The diffusion structure includes an exhaust hole 7 provided on the sidewall of the tube body 2.

The weakening element 6 is placed inside the body 2 and separates the inert gas 5 from the vent hole 7.

The exhaust hole 7 and the igniter 1 are both arranged on the same side of the weakening part 6 and are both located at the end of the tube body 2.

The igniter 1 comprises an igniter container 9 arranged at one opening end of the tube body 2, the igniter container 9 is in sealing connection with the tube body 2, an igniter body 8 and an igniter head 10 which are connected with each other are arranged on the igniter container 9, the igniter body 8 is arranged in the tube body 2 and is right opposite to the weakening part 6, and the igniter head 10 is arranged outside the tube body 2.

The other opening end of the pipe body 2 is provided with a sealing cover 4, the sealing cover 4 is in sealing connection with the pipe body 2, the sealing cover 4 is provided with a convex ball 3, and the convex ball 3 is arranged outside the pipe body 2.

When in ignition, the electric spark triggers the ignition head 10 to generate an electric pulse signal to the igniter body 8, so that the igniter body 8 generates shock waves, and the weakening part 6 (filter membrane) is opened, so that the inert gas 5 compressed in the pipe body 2 can be quickly released into the side airbag through the exhaust hole 7 (the same end as the igniter 1).

By adopting the inert gas to replace the gas producing agent, the influence on the performance of gunpowder due to the influence of the environment is avoided, the product performance is very stable, the ignition process of the gas producing agent is reduced, and the gas can be quickly released into the side airbag.

Different output requirements can be achieved by using different lengths of tube body 2 to load inert gas 5 of different weights.

Claims

1. The utility model provides a cold air type gas generator for side gasbag, characterized by includes body (2), the both ends of body (2) are sealed and its inside inert gas (5) that is equipped with, be equipped with diffusion structure on body (2), the inside of body (2) is linked together through the outside of diffusion structure and body (2), still be equipped with on body (2) with diffusion structure assorted weakening part (6), the inside of body (2) is separated by the outside of weakening part (6) and body (2), inert gas (5) are through weakening part (6) storage in the inside of body (2), still be equipped with on body (2) with weakening part (6) assorted ignition (1).

2. The cold gas generator for a side airbag as claimed in claim 1, wherein the diffusing structure comprises a vent hole (7) provided on a side wall of the tube body (2).

3. The cold gas generator for a side airbag as claimed in claim 2, wherein the weakening part (6) is disposed inside the tube body (2) and separates the inert gas (5) from the vent hole (7).

4. The cold gas generator for a side airbag as claimed in claim 2, wherein the vent hole (7) and the igniter (1) are disposed on the same side of the weakening part (6).

5. The cold gas type gas generator for the side airbag as claimed in any one of claims 1 to 4, wherein the igniter (1) comprises an igniter receptacle (9) installed at one of the open ends of the tube body (2), the igniter receptacle (9) and the tube body (2) are hermetically connected, the igniter receptacle (9) is provided with an igniter body (8) and an igniter head (10) which are connected with each other, the igniter body (8) is disposed inside the tube body (2) and faces the weakening part (6), and the igniter head (10) is disposed outside the tube body (2).

6. The cold gas generator for a side airbag according to any one of claims 1 to 4, wherein a sealing cap (4) is provided at the other open end of the tube body (2), the sealing cap (4) is hermetically connected to the tube body (2), and the sealing cap (4) is provided with a convex ball (3), the convex ball (3) being disposed outside the tube body (2).