Supporting gas guide structure of gas generator

Abstract

The utility model discloses a supporting gas guide structure of a gas generator, and particularly relates to the technical field of gas generators, the supporting gas guide structure comprises a shell, a gas outlet arranged on the top surface of the shell and a gas inlet arranged on the bottom surface of the shell, a gas guide channel is arranged in the shell, and the gas inlet is communicated with the gas guide channel. And pressure reducing cavities are formed in the two sides of the interior of the shell correspondingly, guiding pipes are fixedly installed in the two pressure reducing cavities correspondingly, and the two guiding pipes communicate with the two sides of the air guiding channel correspondingly. According to the supporting gas guide structure of the gas generator, in the actual work, gas enters the two pressure reduction cavities through the gas guide channel and the two guide pipes, when the gas is sprayed out of the guide pipes, the pressure reduction plate can be pushed to extrude the first spring, so that the gas is subjected to preliminary pressure reduction, and the pressure reduction effect is improved. And gas in the pressure reduction cavity enters the gas outlet cavity through the transmission channel and pushes the pressure reduction block, so that the telescopic rod extrudes the third spring to perform secondary pressure reduction on the gas, and the pressure reduction effect on the gas can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas generators, in particular to a supporting gas guiding structure of a gas generator. Background Art

[0002] The airbag is inflated by a gas generator. The gas generator can be divided into pyrotechnic, gas and hybrid gas generators according to the way the gas is generated. The difference is that the gas of the pyrotechnic type is all generated by the combustion of the gas generating agent, the gas of the gas type is all generated by the high-pressure gas pre-stored in the inner cavity which is decompressed and then rushed into the airbag; the hybrid type has both high-pressure gas and gas generating agent in the inner cavity. After the gas generating agent is ignited and burned, the produced gas is mixed with the high-pressure gas and rushed into the airbag.

[0003] Whether it is a large amount of gas generated by combustion in a short period of time or the decompression of compressed gas, the pressure released instantly is huge. If the pressure rushes into the airbag with the gas, the huge impact force will cause secondary damage to the human body. The gas needs to be decompressed before it rushes into the airbag. Most of them are now done by guiding the gas. During the guiding process, the gas is decompressed, and the decompression effect is poor. Therefore, in order to solve the above defects, the inventor proposes a supporting gas guide structure for a gas generator. Utility Model Content

[0004] The main purpose of the utility model is to provide a supporting gas guiding structure of a gas generator, which can effectively solve the problem in the prior art that the gas is guided and the gas is decompressed during the guiding process, but the decompression effect is poor.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A supporting gas guide structure of a gas generator, comprising a shell, an air outlet arranged on the top surface of the shell, and an air inlet arranged on the bottom surface of the shell, an air guide channel is provided inside the shell, and the air inlet is communicated with the air guide channel, decompression chambers are provided on both sides of the shell, guide pipes are fixedly installed inside the two decompression chambers, and the two guide pipes are respectively communicated with the two sides of the air guide channel, contraction grooves are provided on the inner top surfaces of the two decompression chambers, first springs are fixedly installed inside the two contraction grooves, decompression plates are fixedly installed on the bottom surfaces of the two first springs, and two support plates are fixedly installed on both sides of the two decompression chambers;

[0007] An air outlet cavity is provided inside the shell, and the air outlet cavity is located between the two decompression chambers, and a transmission path is opened between the two decompression chambers and the air outlet cavity, the air outlet cavity is communicated with the air outlet, and a plurality of telescopic sleeves are fixedly installed on the top surface of the air outlet cavity, a third spring is fixedly installed inside the telescopic sleeve, and a fixing plate is fixedly installed on the bottom surface of the third spring, a telescopic rod is fixedly installed on the bottom surface of the fixing plate, and a decompression block is fixedly installed on the bottom surface of the telescopic rod.

[0008] Preferably, two filter plates are fixedly installed inside the air duct, a recovery groove is opened on the top surface of the air duct, a second spring is fixedly installed on the inner top surface of the recovery groove, and a movable block is fixedly installed on the bottom surface of the second spring, the movable block is located between the two filter plates, and two storage holes are opened inside the air duct, and the two storage holes are located between the two filter plates.

[0009] Preferably, a flexible pad is fixedly mounted on one side of the top surface of the support plate.

[0010] Preferably, a reflux hole is opened on one side of the top surface of the support plate.

[0011] Preferably, a connecting plate is fixedly mounted on the bottom surface of the movable block, and scrapers are fixedly mounted on both sides of the connecting plate.

[0012] Preferably, a plurality of air holes are provided on the bottom surface of the pressure reducing block.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model discloses a supporting gas guide structure of a gas generator. By setting two decompression chambers, in actual work, the gas enters the two decompression chambers through the gas guide channel and the two guide pipes. When the gas is ejected from the guide pipe, the decompression plate can be pushed to squeeze the first spring to perform preliminary decompression on the gas. The gas in the decompression chamber will enter the gas outlet chamber through the transmission channel and push the decompression block to make the telescopic rod squeeze the third spring to perform secondary decompression on the gas, thereby effectively improving the decompression effect on the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the shell of the utility model;

[0017] Figure 3 This is a schematic diagram of the support plate structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the movable block of the utility model;

[0019] Figure 5 It is a schematic cross-sectional structural diagram of the telescopic sleeve of the utility model.

[0020] In the figure: 1. shell; 2. air outlet; 3. air inlet; 101. air guide channel; 102. decompression chamber; 103. guide tube; 104. contraction groove; 105. first spring; 106. decompression plate; 107. support plate; 108. transmission channel; 109. air outlet chamber; 110. telescopic sleeve; 111. decompression block; 112. filter plate; 113. recovery groove; 114. second spring; 115. movable block; 116. storage hole; 1071. reflux hole; 1072. flexible pad; 1151. connecting plate; 1152. scraper; 1101. third spring; 1102. telescopic rod; 1104. fixing plate. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] The utility model discloses a supporting gas guiding structure of a gas generator, such as Figure 1-5 As shown, it includes a shell 1, an air outlet 2 arranged on the top surface of the shell 1, and an air inlet 3 arranged on the bottom surface of the shell 1. Gas can enter the shell 1 through the air inlet 3, and the decompressed gas will be discharged through the air outlet 2.

[0023] An air duct 101 is provided inside the shell 1, and the air inlet 3 is communicated with the air duct 101. Decompression chambers 102 are provided on both sides of the shell 1. Guide tubes 103 are fixedly installed inside the two decompression chambers 102, and the two guide tubes 103 are respectively communicated with the two sides of the air duct 101. Gas can enter the air duct 101 through the air inlet 3, and enter the two decompression chambers 102 through the air duct 101 and the guide tube 103.

[0024] The inner top surfaces of the two decompression chambers 102 are each provided with a contraction groove 104, and the insides of the two contraction grooves are each fixedly installed with a first spring 105, and the bottom surfaces of the two first springs 105 are each fixedly installed with a decompression plate 106. When the gas is discharged into the decompression chamber 102 through the guide tube 103, the decompression plate 106 is pushed to squeeze the first spring 105 to perform preliminary decompression of the gas. Two support plates 107 are fixedly installed on both sides of the inside of the two decompression chambers 102, and a flexible pad 1072 is fixedly installed on one side of the top surface of the support plate 107, and a reflux hole 1071 is provided on one side of the top surface of the support plate 107.

[0025] An air outlet cavity 109 is provided inside the shell 1 , and the air outlet cavity 109 is located between the two decompression chambers 102 . A transmission channel 108 is provided between the two decompression chambers 102 and the air outlet cavity 109 . The gas that has undergone preliminary decompression will enter the air outlet cavity 109 through the transmission channel 108 .

[0026] The air outlet cavity 109 is communicated with the air outlet 2, and the gas entering the air outlet cavity 109 will be discharged through the air outlet 2. A plurality of telescopic sleeves 110 are fixedly installed on the top surface of the air outlet cavity 109, and a third spring 1101 is fixedly installed inside the telescopic sleeve 110, and a fixing plate 1104 is fixedly installed on the bottom surface of the third spring 1101, and a telescopic rod 1102 is fixedly installed on the bottom surface of the fixing plate 1104, and a decompression block 111 is fixedly installed on the bottom surface of the telescopic rod 1102. The gas entering the air outlet cavity 109 will push the decompression block 111, and then the telescopic rod 1102 will squeeze the third spring 1101 to perform secondary decompression on the gas, and the gas after the secondary decompression will be discharged through the air outlet 2.

[0027] Two filter plates 112 are fixedly installed inside the air duct 101. When the gas enters the air duct 101, the two filter plates 112 can filter the large-sized particles contained in the gas. A recovery groove 113 is provided on the top surface of the air duct 101. A second spring 114 is fixedly installed on the inner top surface of the recovery groove 113, and a movable block 115 is fixedly installed on the bottom surface of the second spring 114. The movable block 115 is located between the two filter plates 112. Two storage holes 116 are provided inside the air duct 101, and the two storage holes 116 are located between the two filter plates 112. When the gas enters the air duct 101, it pushes the movable block 115, causing it to squeeze the second spring 114 and retract into the recovery groove 113, so that the gas will contact the filter plate 112. When the gas stops being transported, the second spring 114 will pop out the movable block 115. A connecting plate 1151 is fixedly installed on the bottom surface of the movable block 115, and scrapers 1152 are fixedly installed on both sides of the connecting plate 1151. The two scrapers 1152 will then contact the two filter plates 112 to scrape off the large-sized particles of the filter plate 112, and the particles will fall into the storage hole 116.

[0028] The working principle of the utility model is as follows: the gas enters the two decompression chambers 102 through the air guide 101 and the two guide tubes 103. During this process, when the gas enters the air guide 101, it pushes the movable block 115 to squeeze the second spring 114 and retract into the recovery groove 113, so that the gas will contact the filter plate 112. When the gas stops being transported, the second spring 114 will pop up the movable block 115. The bottom surface of the movable block 115 is fixedly installed with a connecting plate 1151, and both sides of the connecting plate 1151 are fixedly installed with scrapers 1152. The two scrapers Plate 1152 will then come into contact with the two filter plates 112 to scrape off the large-sized particles on the filter plates 112, and the particles will fall into the storage hole 116. When the gas is ejected from the guide tube 103, the decompression plate 106 can be pushed to squeeze the first spring 105 to perform a preliminary decompression of the gas. The gas in the decompression chamber 102 will enter the air outlet chamber 109 through the transmission channel 108 and push the decompression block 111 to make the telescopic rod 1102 squeeze the third spring 1101 to perform a secondary decompression of the gas. The gas after the secondary decompression will be discharged through the outlet 2.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A supporting gas guide structure for a gas generator, comprising a shell (1), a gas outlet (2) arranged on the top surface of the shell (1), and a gas inlet (3) arranged on the bottom surface of the shell (1), characterized in that: An air guide channel (101) is provided inside the shell (1), and the air inlet (3) is communicated with the air guide channel (101); decompression chambers (102) are provided on both sides of the shell (1); guide tubes (103) are fixedly installed inside the two decompression chambers (102), and the two guide tubes (103) are respectively communicated with the two sides of the air guide channel (101); contraction grooves (104) are provided on the inner top surfaces of the two decompression chambers (102); first springs (105) are fixedly installed inside the two contraction grooves (104); decompression plates (106) are fixedly installed on the bottom surfaces of the two first springs (105); and two support plates (107) are fixedly installed on both sides of the interior of the two decompression chambers (102); An air outlet cavity (109) is provided inside the shell (1), and the air outlet cavity (109) is located between the two decompression cavities (102); a transmission path (108) is provided between the two decompression cavities (102) and the air outlet cavity (109); the air outlet cavity (109) is communicated with the air outlet (2); a plurality of telescopic sleeves (110) are fixedly installed on the top surface of the air outlet cavity (109); a third spring (1101) is fixedly installed inside the telescopic sleeve (110); a fixing plate (1104) is fixedly installed on the bottom surface of the third spring (1101); a telescopic rod (1102) is fixedly installed on the bottom surface of the fixing plate (1104); a decompression block (111) is fixedly installed on the bottom surface of the telescopic rod (1102).

2. The supporting and gas-guiding structure of a gas generator according to claim 1, characterized in that: Two filter plates (112) are fixedly installed inside the air guide channel (101), a recovery groove (113) is provided on the top surface of the air guide channel (101), a second spring (114) is fixedly installed on the inner top surface of the recovery groove (113), and a movable block (115) is fixedly installed on the bottom surface of the second spring (114), the movable block (115) is located between the two filter plates (112), and two storage holes (116) are provided inside the air guide channel (101), and the two storage holes (116) are located between the two filter plates (112).

3. The supporting and gas-guiding structure of a gas generator according to claim 1, characterized in that: A flexible pad (1072) is fixedly mounted on one side of the top surface of the support plate (107).

4. The supporting and gas-guiding structure of a gas generator according to claim 1, characterized in that: A reflux hole (1071) is provided on one side of the top surface of the support plate (107).

5. The supporting and guiding structure of a gas generator according to claim 2, characterized in that: A connecting plate (1151) is fixedly mounted on the bottom surface of the movable block (115), and scrapers (1152) are fixedly mounted on both sides of the connecting plate (1151).

6. The supporting and guiding structure of a gas generator according to claim 1, characterized in that: The bottom surface of the pressure reducing block (111) is provided with a plurality of air holes.

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