JP3099002U - Inlet airbag charging module - Google Patents

Abstract

To provide a charging module for an intake airbag.
SOLUTION: A gas generator 20 including a housing having an outer surface and a gas ejection hole 201, and an inner surface and an edge are provided on an outer surface of the gas generator so as to have a distance from the outer surface, A shielding plate 21 forming an expansion chamber 22 between the inner surface and the outer surface of the gas generator, and forming a second gas ejection hole 211 between the periphery and the gas generator, and is placed on a side of the shielding plate. An air inlet 23 for directing the air entering from the second gas outlet through the same direction as the gas ejected from the second gas outlet, a flow guide plate 24 placed on a side edge of the second gas outlet, and a gas generator. It has a diffusion mixing plate 27 placed on the lower side and an airbag placed at the gas outlet.
[Selection diagram] Fig. 1

Description

The present invention relates to a kind of airbag, and more particularly, to a charging module of an intake airbag which can introduce a large amount of air using a small amount of a gas generating agent.

Airbag refills are divided into gunpowder and high-pressure steel cylinder types, and the chemical components and gases in these refills are still the best for weight, volume, price, efficiency and environmental impact. Combination has not been achieved. At present, the amount of gas generant used in a gas charger is much larger than the theoretical requirement. For example, a gas charger for a driver seat air bag has a gas generant of 50,000 pounds energy. However, only 500 pounds of energy is actually required to inflate and fill the airbag, and nearly 99% of the chemical energy is wasted. The cause is that the chemical generates a high-temperature and high-pressure gas by an instantaneous chemical reaction, but becomes a gas with a low flow rate during the overexpansion and cooling process. The requirement to release a sufficient flow of gas cannot be achieved.

別 に In order to reduce the amount of chemicals used, mixed-type aerators have been developed separately. The method uses a high pressure steel cylinder and heats a small amount of drug to preserve gas and inflate the airbag. However, the volume of such a design is relatively large, and the weight of the steel cylinder is large, and the weight of the steel cylinder is too heavy. In addition, a separate pre-combustion refueling module is provided, which burns a small amount of chemicals to inflate the airbag with gas generated by the reaction, and inhales other necessary gases from the vehicle air. According to literature displays up to now, the efficiency of air intake in a vehicle of an intake type device reaches about 30%.

The main object of the present invention is to provide an intake airbag that can introduce a large amount of gas from the outside world using a very small amount of explosive, and that reduces the risk of using explosive and increases the charging efficiency.

Another object of the present invention is to provide a kind of airbag charging module that reduces the temperature by introducing a large amount of air from the outside into the airbag and also prevents danger caused by the high temperature.

The invention of claim 1 is directed to a charging module for an inhalation type airbag,
A gas generator containing a gas generating agent for generating a gas inside the housing including a housing having an outer surface and a gas ejection hole,
An inner surface and at least one rim, covering an outer surface of a portion of the gas generator, positioned at a distance from the outer surface, and expanding between the inner surface and an outer surface of the gas generator. A shielding plate forming a chamber, forming a second gas ejection hole between the margin and the gas generator, and thus forming a first nozzle;
An air inlet is provided to correspond to the outside of the edge of the shielding plate and has a reduced diameter at a distance from the shielding plate, and the gas of the gas generator is ejected from the first gas ejection hole. And at least one flow guide plate for allowing outside air to flow in from the air inlet when the low-pressure zone is formed.
According to a second aspect of the present invention, in the charging module for an intake air bag according to the first aspect, the charging module mixes the air that has entered through the air inlet with the gas that is ejected from the second gas ejection hole and gradually increases the pressure. And a diffusion mixing chamber for increasing the pressure.
According to a third aspect of the present invention, in the charging module for an intake airbag according to the first aspect, the charging module mixes the air that has entered through the air inlet with the gas that has been discharged from the second gas discharging hole. It is a charging module for an air-intake airbag, which is provided with a diffusion nozzle and a diffusion mixing plate to be introduced into the bag.
According to a fourth aspect of the present invention, in the charging module for an intake airbag according to the third aspect, a second nozzle is formed between the flow guide plate and the diffusion mixing plate. I have a damn module.

The charging module of the airbag of the present invention can introduce a large amount of air using a small amount of gas generating agent.

The present invention provides a kind of air-filling airbag charging module, which comprises a gas generator having an outer surface and a housing having a gas outlet, an inner surface and a periphery, and an outer surface of the gas generator. A shielding plate that is placed at a distance from the outer surface, forms an expansion chamber between the inner surface and the outer surface of the gas generator, and forms a second gas ejection hole between the periphery and the gas generator. An air inlet which is placed on the side of the shielding plate to allow air entering from the same to be in the same direction as the gas ejected from the second gas outlet, and a guide which is located at a side edge of the second gas outlet. It has a flow plate, a diffusion mixing plate located below the gas generator, and an airbag located at the gas outlet.

参照 Please refer to FIG. 1 and FIG. FIG. 1 is a perspective view of the charging module of the present invention, and FIG. 2 is a side sectional view of the charging module of the present invention. The charging module 10 includes a columnar gas generator 20, the gas generator 20 includes a plurality of first gas ejection holes 201, and the first gas ejection holes 201 are directed sideways on an outer surface of the gas generator 20. Are arranged. An inverted U-shaped shielding plate 21 is provided so as to cover the outside of the gas generator 20, and there is a certain interval between the shielding plate 21 and the gas generator 20, and the upper edge 221 of the shielding plate 21 is The space surrounded by the gas generator 20 forms an expansion chamber 22, and the rear end of the side edge 222 of the shielding plate 21 and the second gas ejection hole 211 of the gas generator 20 form a nozzle. There are air inlets 23 on two sides of the upper edge 221 to allow air to enter. A flow guide plate 24 is provided on two sides of the second gas ejection hole 211, and a V-shaped diffusion mixing plate 27 is provided below the shield plate 21 of the gas generator 20. Is formed so as to correspond to the outer side of the edge 213, and forms an air inlet which gradually reduces and gradually expands with a distance from the shielding plate 21. A space at one end of the flow guide plate 24 opposite to the air inlet 23 forms a diffusion mixing chamber 25, and a diffusion nozzle 26 is provided on the opposite side of the air inlet 23 of the charging module 10.

参照 Please refer to FIG. 3 and FIG. FIG. 3 is a view showing a gas flow direction of the charging module of the present invention. As shown in this figure, air enters the inside of the housing through the air barrier plate 28. FIG. 4 is a sectional view of the gas generator of the present invention. As shown in FIG. 4, after the igniter 202 receives the signal, the igniter 202 induces a combustion reaction of the gas generating agent 204 to generate a high-pressure and high-temperature gas. After the high-pressure and high-temperature gas is filtered by the filter 203 and cooled, the gas is introduced into the expansion chamber 22 through the first gas ejection hole 201 as shown in FIG. It passes through the nozzle to be formed and is ejected from the second gas ejection hole 211. The gas ejected at this time is a high-speed, low-pressure gas flow, and thereby a low-pressure area is formed at the outlet of the second gas ejection hole 211. Due to the formation of the low-pressure section, outside air is sucked in, the expansion chamber 22 and the high-pressure gas ejected from the second gas ejection holes 211 are mixed in the diffusion mixing chamber 25, the temperature thereof is reduced, and After the pressure is continuously increased by the diffusion nozzle 26 formed between the diffusion mixing plates 27, the airbag 30 is inflated.

The present invention utilizes a low-pressure area formed by a rapid airflow formed after a high-pressure gas passes through a nozzle, introduces outside air into the airbag, instantaneously expands the airbag, and provides an air having a supporting force. Form a bag. The present invention saves a lot of money because there is less drug and gas storage than used in traditional gunpowder and high pressure steel cylinder airbags. In addition, according to the present invention, after the high-pressure gas is generated by the gas generator, the high-pressure gas is first filled into the expansion chamber 22, and further passed through the nozzle of the shielding plate 21 to form a low-pressure area. Fill bag 30. This is not to inflate the airbag using only the gas generated by the instantaneous reaction of the gas generating agent, and therefore, it is possible to lower the gas temperature in the airbag. There is no need to use high temperature resistant materials, which allows a variety of low cost options. In addition, since the present invention does not use only the gas generated by the instantaneous chemical reaction of the drug, the filling speed of the gas in the airbag is not as high as that of the explosive-type air-charger. Reduces the probability of burns.

Overall, the present invention is different from the prior art in all of its purpose, means, and function, and is a major breakthrough in the charging module of the intake airbag. The embodiments described herein do not limit the scope of the present invention, and any modification or alteration of details that can be made based on the present invention belongs to the claims of the present invention.

FIG. 3 is a perspective view of the charging module of the present invention. FIG. 3 is a side sectional view of the charging module of the present invention. FIG. 4 is a view showing a gas flow direction of the charging module of the present invention. FIG. 3 is a sectional view of the gas generator of the present invention.

Explanation of reference numerals

Reference Signs List 10 charging module 20 gas generator 201 first gas ejection hole 202 igniter 203 filter 204 gas generating agent 205 outer surface 21 shielding plate 211 second gas ejection hole 212 inner surface 213 edge 22 expansion chamber 221 upper edge 222 side edge 23 Air inlet 24 guide plate 25 diffusion mixing chamber 26 diffusion nozzle 27 diffusion mixing plate 28 air partition plate 30 air bag

Claims (4)

In the charging module of the intake airbag,
A gas generator containing a gas generating agent for generating a gas inside the housing including a housing having an outer surface and a gas ejection hole,
An inner surface and at least one rim, covering an outer surface of a portion of the gas generator, positioned at a distance from the outer surface, and expanding between the inner surface and an outer surface of the gas generator. A shielding plate forming a chamber, forming a second gas ejection hole between the margin and the gas generator, and thus forming a first nozzle;
An air inlet is provided to correspond to the outside of the edge of the shielding plate and has a reduced diameter at a distance from the shielding plate, and the gas of the gas generator is ejected from the first gas ejection hole. And at least one flow guide plate for allowing outside air to flow in from the air inlet when forming the low-pressure zone. 2. The charging module for an airbag according to claim 1, wherein the charging module mixes the air that has entered through the air inlet with the gas that is ejected from the second gas ejection port and gradually increases the pressure. A charging module for an intake airbag, characterized by being equipped. The air supply module according to claim 1, wherein the air supply module mixes the air that has entered through the air inlet with the gas that is ejected from the second gas ejection hole, and then introduces the air into the airbag. A charging module for an intake airbag, comprising a diffusion mixing plate. 4. The charging module for an intake airbag according to claim 3, wherein a second nozzle is formed between the flow guide plate and the diffusion mixing plate.

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