Inflation device with double gas cylinders

Abstract

The invention discloses a double-gas-cylinder inflation device which comprises a double-engine base, an electric detonator, two pricking needles and two gas cylinders, the double-engine base comprises a base body, an air inlet pipe, two gas distribution pipes, two high-pressure pipes and an exhaust pipe, the air inlet pipe, the two gas distribution pipes, the two high-pressure pipes and the exhaust pipe are arranged in the base body, and an outlet of the air inlet pipe is communicated with inlets of the two gas distribution pipes. Outlets of the two gas distribution pipes are respectively communicated with first inlets of the two high-pressure pipes, and outlets of the two high-pressure pipes are both communicated with an inlet of the exhaust pipe; an outlet of the electric detonator is communicated with an inlet of the air inlet pipe; the two pricking needles are connected into the two high-pressure pipes in a sliding mode correspondingly. The air inflation device has the beneficial effects that the structural design of the double air cylinders and the double engine seats is adopted, compared with a traditional single-air-cylinder or single-air-source air inflation device, the air inflation device can provide air with larger flow in a short time, the air inflation speed is greatly increased, and the air inflation efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of gas generators, and more particularly to a dual-cylinder inflation device. Background Art

[0002] With the wide application of inflatable products in various fields such as daily life, industrial production, and outdoor sports, such as inflatable mattresses, inflatable tents, automotive airbags, and inflatable water toys, the performance requirements for inflation devices are also getting higher and higher.

[0003] In related technologies, a gas generator is proposed, which includes a valve body and a valve cover. The interior thereof is a cavity, and the cavity includes an upper high-pressure chamber and a lower exhaust chamber that are interconnected. A puncture mechanism is provided in the lower exhaust chamber. The valve cover is connected to the upper end of the valve body, and its interior communicates with the upper high-pressure chamber. An electric detonator and a compressed gas cylinder are provided in the valve cover, and the compressed gas cylinder is connected to the lower end of the valve body.

[0004] Regarding the above-mentioned related technologies, the following defects exist: The above inflation device is a single-cylinder inflation device. Affected by the inflation requirements of the product, a single gas cylinder cannot meet the inflation volume requirements of new products. Continuing to use this inflation device requires the development of a larger-capacity gas cylinder, and the test cycle of the newly developed product is long and the R & D cost is high. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and propose a dual-cylinder inflation device to solve the technical problem of the small gas volume of a single cylinder in the prior art.

[0006] To achieve the above technical purpose, the technical solution of the present invention provides a dual-cylinder inflation device, which includes a dual-firing seat. The dual-firing seat includes a seat body and an intake pipe, two branch pipes, two high-pressure pipes, and an exhaust pipe provided in the seat body. The outlet of the intake pipe is respectively communicated with the inlets of the two branch pipes. The outlets of the two branch pipes are respectively communicated with the first inlets of the two high-pressure pipes. The outlets of the two high-pressure pipes are both communicated with the inlet of the exhaust pipe; An electric detonator, the outlet of which is communicated with the inlet of the intake pipe; Two puncture needles, the two puncture needles are respectively slidably connected in the two high-pressure pipes; and, Two gas cylinders, the outlets of the two gas cylinders are respectively communicated with the second inlets of the two high-pressure pipes.

[0007] In some embodiments, a plug is provided at one end of the high-pressure pipe away from the gas cylinder, and the plug is threadedly connected to the end of the high-pressure pipe.

[0008] In some embodiments, the puncture needle includes a slider and a needle body. The slider is slidably connected in the high-pressure pipe, and the needle body is provided at one end of the slider close to the gas cylinder.

[0009] In some embodiments, the plug includes a plug body and a guide rod. The plug body is threadedly connected to the end of the high-pressure pipe. The guide rod is provided at one end of the plug body close to the gas cylinder. A guide groove adapted to the guide rod is provided on the slider.

[0010] In some embodiments, a plurality of through holes are provided around the slider.

[0011] In some embodiments, a first control assembly for controlling the opening and closing of the inlets of the two sub-pipes is provided in the intake pipe, and a second control assembly for controlling the opening and closing of the outlets of the two high-pressure pipes is provided in the exhaust pipe.

[0012] In some embodiments, the first control assembly includes a first pipe body and a second pipe body. Both the first pipe body and the second pipe body extend along the axial direction of the intake pipe. One ends of the first pipe body and the second pipe body close to the inlet of the intake pipe are both open. Two first through holes are provided on the first pipe body. The second pipe body is rotatably connected to the outside of the first pipe body. Two second through holes are provided on the second pipe body. The two first through holes respectively coincide with the two second through holes. The two second through holes respectively coincide with the inlets of the two sub-pipes. A third through hole is further provided on the second pipe body. An adjustment assembly for adjusting the angle of the second pipe body relative to the first pipe body is provided on the double-headed seat.

[0013] In some embodiments, the adjustment assembly includes a motor, a driving gear, and a driven gear. The motor is provided on the double-headed seat. The driving gear is fixed to the output shaft of the motor. The driven gear is fixedly sleeved on the outside of the second pipe body. The driving gear meshes with the driven gear.

[0014] In some embodiments, a sealing airbag is connected to the outside of the first pipe body. One end of the sealing airbag close to the electric blasting tube is open. When the sealing airbag is in a saturated state, the sealing airbag abuts against the inner side of the second pipe body.

[0015] In some embodiments, the second control assembly includes two valves, and the two valves are respectively provided at the outlets of the two high-pressure pipes.

[0016] Compared with the prior art, the beneficial effects of the present invention include: adopting the structural design of double gas cylinders and a double-headed seat, compared with the traditional single gas cylinder or single gas source inflation device, it can provide a larger flow rate of gas in a short time, greatly improving the inflation speed and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the inflation device provided by the present invention; Figure 2 is a cross-sectional view of the overall structure of the inflation device provided by the present invention; Figure 3 is the enlarged view of the local structure at position A provided by the present invention Figure 1 in Figure 4 is the overall structural sectional view of the first control component provided by the present invention

[0018] Explanation of reference numerals: 1. Double - firing seat; 11. Seat body; 12. Intake pipe; 13. Branch pipes; 14. High - pressure pipes; 15. Exhaust pipe; 2. Electric blasting tube; 3. Pricker; 31. Slide block; 32. Needle body; 33. Perforation; 4. Gas cylinder; 5. Plug; 51. Plug body; 52. Guide rod; 53. Guide groove; 6. First control component; 61. First pipe body; 62. Second pipe body; 63. First through - hole; 64. Second through - hole; 65. Third through - hole; 66. Sealing airbag; 7. Second control component; 71. Valve; 8. Adjusting component; 81. Motor; 82. Driving gear; 83. Driven gear Detailed implementation manners

[0019] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention

[0020] The present invention provides a double - gas - cylinder inflation device, and its structure is as shown in Figure 1 - Figure 4 and includes a double - firing seat 1, an electric blasting tube 2, two prickles 3 and two gas cylinders 4

[0021] The double - firing seat 1 includes a seat body 11 and an intake pipe 12, two branch pipes 13, two high - pressure pipes 14 and an exhaust pipe 15 arranged in the seat body 11. The outlets of the intake pipe 12 are respectively communicated with the inlets of the two branch pipes 13. The outlets of the two branch pipes 13 are respectively communicated with the first inlets of the two high - pressure pipes 14. The outlets of the two high - pressure pipes 14 are both communicated with the inlet of the exhaust pipe 15

[0022] The outlet of the electric blasting tube 2 is communicated with the inlet of the intake pipe 12

[0023] The two prickles 3 are respectively slidably connected in the two high - pressure pipes 14

[0024] The outlets of the two gas cylinders 4 are respectively communicated with the second inlets of the two high - pressure pipes 14

[0025] During use, the electric detonator 2 serves as the gas generation starting component of the entire device. When the electric detonator 2 is triggered and detonated, the pyrotechnic agent inside it rapidly undergoes a chemical reaction, generating a large amount of high-temperature and high-pressure gas. These gases enter the double-connection seat 1 through the intake pipe 12. Since the outlets of the intake pipe 12 are respectively connected to the inlets of the two branch pipes 13, the gas is evenly divided into the two branch pipes 13, preparing for subsequent gas supply to the two high-pressure pipes 14 respectively. A puncture needle 3 is slidably connected inside each high-pressure pipe 14. When the pressure inside the high-pressure pipe 14 reaches a certain level, the gas pressure will push the puncture needle 3 to overcome the frictional force between it and the high-pressure pipe 14, causing the puncture needle 3 to move rapidly. The movement of the puncture needle 3 will pierce the sealing structure at the outlet of the corresponding gas cylinder 4, enabling the high-pressure gas inside the gas cylinder 4 to enter the high-pressure pipe 14 through the second inlet of the high-pressure pipe 14. The outlets of the two high-pressure pipes 14 are both connected to the inlet of the exhaust pipe 15. Due to the effect of the pressure difference, the gas will flow towards the exhaust pipe 15. The outlet of the exhaust pipe 15 can be connected to the equipment that needs to be inflated, delivering the high-pressure gas to the target position to achieve the inflation function.

[0026] In the present invention, the structural design of using two gas cylinders 4 and a double-connection seat 1 can provide a larger gas flow rate in a short time compared with the traditional single gas cylinder 4 or single gas source inflation device, greatly improving the inflation speed and efficiency.

[0027] To ensure the sealing inside the high-pressure pipe 14, please refer to Figure 1 , in a preferred embodiment, a plug 5 is provided at one end of the high-pressure pipe 14 away from the gas cylinder 4, and the plug 5 is threadedly connected to the end of the high-pressure pipe 14.

[0028] During use, the plug 5 is threadedly connected to the end of the high-pressure pipe 14. The threaded structure can make the plug 5 fit tightly with the inner wall of the high-pressure pipe 14 when the plug 5 is tightened, forming a reliable sealed connection. This sealing method can effectively prevent the gas inside the high-pressure pipe 14 from leaking, ensuring that the high-pressure gas maintains a relatively high pressure inside the pipe.

[0029] To puncture the sealing layer of the gas cylinder 4, please refer to Figure 2 , in a preferred embodiment, the puncture needle 3 includes a slider 31 and a needle body 32. The slider 31 is slidably connected inside the high-pressure pipe 14, and the needle body 32 is provided at one end of the slider 31 close to the gas cylinder 4.

[0030] During use, the sliding connection between the slider 31 and the high-pressure pipe 14 provides precise guidance for the movement of the needle body 32. The inner wall of the high-pressure pipe 14 serves as the sliding track for the slider 31, ensuring that the slider 31 can only move along a predetermined straight line direction, thereby ensuring that the needle body 32 can accurately align with the gas outlet of the gas cylinder 4. The needle body 32 is firmly arranged on the slider 31, and the connection between the two has sufficient strength and stability to withstand the impact force and frictional force during the puncture process, preventing the needle body 32 from falling off or breaking from the slider 31 during puncture.

[0031] To guide the puncture needle 3, please refer to Figure 3 , in a preferred embodiment, the plug 5 includes a plug body 51 and a guide rod 52. The plug body 51 is threadedly connected to the end of the high-pressure pipe 14. The guide rod 52 is arranged at one end of the plug body 51 close to the gas cylinder 4. The slider 31 is provided with a guide groove 53 adapted to the guide rod 52.

[0032] During use, the plug body 51 is threadedly connected to the end of the high-pressure pipe 14, and through the tight fit of the thread, the sealing of the end of the high-pressure pipe 14 is achieved. The guide rod 52 is arranged at one end of the plug body 51 close to the gas cylinder 4, and the slider 31 is provided with a guide groove 53 adapted to the guide rod 52. During the assembly process, the guide rod 52 is inserted into the guide groove 53 of the slider 31, which not only helps to accurately position the plug 5 during installation to ensure that the plug body 51 can be accurately threadedly connected to the end of the high-pressure pipe 14, but also during the operation of the inflation device, the cooperation between the guide rod 52 and the guide groove 53 can limit the rotational freedom of the slider 31, enabling the slider 31 to only perform linear sliding along the axial direction of the high-pressure pipe 14. This can ensure that the movement direction of the puncture needle 3 in the high-pressure pipe 14 is stable and accurate, preventing the puncture needle 3 from being unable to accurately pierce the sealing structure of the gas cylinder 4 due to the deviation or rotation of the slider 31, and improving the reliability and stability of the inflation device.

[0033] To improve the response speed of the slider 31, please refer to Figure 3 , in a preferred embodiment, a plurality of through holes 33 are provided around the slider 31.

[0034] During use, the arrangement of the through holes 33 reduces the material consumption of the slider 31, thereby reducing the weight of the slider 31. When the gas pressure in the high-pressure pipe 14 pushes the slider 31 to move, the lighter slider 31 has less inertia and can respond more quickly to the change of gas pressure.

[0035] To control the inflation process, please refer to Figure 3 , in a preferred embodiment, a first control assembly 6 for controlling the opening and closing of the inlets of the two sub-pipes 13 is provided in the inlet pipe 12, and a second control assembly 7 for controlling the opening and closing of the outlets of the two high-pressure pipes 14 is provided in the exhaust pipe 15.

[0036] During use, with the aid of the first control component 6, the sequence of air intake of the two sub-air pipes 13 or the timing of simultaneous air intake can be determined, thereby orderly guiding different stages of the entire inflation process. For example, first open the air intake of one sub-air pipe 13 to allow the corresponding gas cylinder 4 to participate in inflation first, and then open the other one to achieve staged inflation, meeting the needs of some complex inflation processes and improving the orderliness of inflation. The second control component 7 can accurately control when the gas in the high-pressure pipe 14 enters the exhaust pipe 15 and grasp the inflation node. For example, it is opened after the gas in the high-pressure pipe 14 is fully mixed and reaches an appropriate pressure, ensuring that the gas output to the target device is in good state and stable pressure, making the connection between all stages of the inflation process tight and orderly, and improving the systematicness and stability of the operation of the entire inflation device.

[0037] To control the opening and closing of the two sub-air pipes 13, please refer to Figure 3 , in a preferred embodiment, the first control component 6 includes a first pipe body 61 and a second pipe body 62. Both the first pipe body 61 and the second pipe body 62 extend along the axial direction of the intake pipe 12. One ends of the first pipe body 61 and the second pipe body 62 close to the inlet of the intake pipe 12 are both open. Two first through holes 63 are provided on the first pipe body 61. The second pipe body 62 is rotatably connected to the outside of the first pipe body 61. Two second through holes 64 are provided on the second pipe body 62. The two first through holes 63 respectively coincide with the two second through holes 64. The two second through holes 64 respectively coincide with the inlets of the two sub-air pipes 13. A third through hole 65 is further provided on the second pipe body 62. An adjusting component 8 for adjusting the angle of the second pipe body 62 relative to the first pipe body 61 is provided on the double-head seat 1.

[0038] During use, when the inflation device is not working, the first through holes 63 on the first pipe body 61 and the second through holes 64 on the second pipe body 62 are in a misaligned state, that is, they do not coincide. At the same time, the third through hole 65 on the second pipe body 62 is in a closed state, which prevents gas from flowing from the intake pipe 12 into the branch pipe 13, ensuring that the gas in the intake pipe 12 cannot enter the branch pipe 13, maintaining the entire system in an initial static state, and avoiding gas leakage or misinflation. When it is necessary to start the inflation process, the angle of the second pipe body 62 relative to the first pipe body 61 is adjusted through the adjustment assembly 8. As the second pipe body 62 rotates, the two first through holes 63 on the first pipe body 61 and the two second through holes 64 on the second pipe body 62 gradually coincide, enabling the gas in the intake pipe 12 to enter the corresponding branch pipe 13 through the coincident through holes. When the first through hole 63 and the second through hole 64 are completely coincident, the gas will flow along the channel into the branch pipe 13, achieving the conduction from the intake pipe 12 to the branch pipe 13. Since there are two first through holes 63 and two second through holes 64, and they respectively correspond to the inlets of the two branch pipes 13, independent control of the gas intake of the two branch pipes 13 can be realized. By controlling the rotation angle of the second pipe body 62, the gas flow rate into each branch pipe 13 can be precisely controlled. When the area of the coincident part of the through holes is large, the gas flow rate is large; when the area of the coincident part is small, the gas flow rate is small. When the two second through holes 64 are misaligned with the two first through holes 63, the third through hole 65 can coincide with any one of the first through holes 63, thereby independently controlling the opening and closing of any one of the gas cylinders 4.

[0039] To adjust the angle of the second pipe body 62 relative to the first pipe body 61, please refer to Figure 4 , in a preferred embodiment, the adjustment assembly 8 includes a motor 81, a driving gear 82, and a driven gear. The motor 81 is provided on the double - seat 1, the driving gear 82 is fixed to the output shaft of the motor 81, the driven gear is fixedly sleeved on the outer side of the second pipe body 62, and the driving gear 82 meshes with the driven gear.

[0040] During use, when the inflation device needs to start the inflation operation or adjust the gas flow rate according to the inflation situation, the motor 81 receives the corresponding control signal, and its output shaft outputs this rotational power outward. As the output shaft of the motor 81 rotates, the driving gear 82 rotates synchronously. When the driving gear 82 rotates, it transmits the power to the driven gear, causing the driven gear to rotate synchronously with the driving gear 82. Since the driven gear is fixedly connected to the second pipe body 62, the rotation of the driven gear will drive the second pipe body 62 to rotate together around the axis of the first pipe body 61, thereby realizing the change in the angle of the second pipe body 62 relative to the first pipe body 61.

[0041] To improve the sealing performance between the first pipe body 61 and the second pipe body 62, please refer to Figure 4, in a preferred embodiment, a sealing airbag 66 is connected to the outer side of the first pipe body 61. One end of the sealing airbag 66 close to the electric blasting tube 2 is open. When the sealing airbag 66 is in a saturated state, the sealing airbag 66 abuts against the inner side of the second pipe body 62.

[0042] During use, when the inflation device is not working and the sealing airbag 66 is not inflated, the sealing airbag 66 is in a natural contraction state and there is basically no gas filling inside it. At this time, there is a certain gap between it and the inner side of the second pipe body 62, which will not hinder operations such as the rotation of the second pipe body 62. When the inflation process starts and the electric blasting tube 2 detonates to generate gas, part of the gas enters the inside of the sealing airbag 66 through the opening at one end of the sealing airbag 66 close to the electric blasting tube 2. As the gas continues to be filled, the sealing airbag 66 begins to gradually expand until it reaches a saturated state. In the saturated state, the volume of the sealing airbag 66 reaches the maximum and the internal gas pressure makes its wall fully extended, and then it tightly abuts against the inner side wall of the second pipe body 62. In this way, a sealing barrier is formed between the first pipe body 61 and the second pipe body 62, effectively preventing gas from leaking through the gap between the first pipe body 61 and the second pipe body 62, ensuring that the gas can only enter the sub-air pipe 13 through the overlapping part of the first through hole 63 and the second through hole 64, enhancing the sealing of the first control component 6 for controlling the gas flow direction, and avoiding situations such as gas leakage and diversion due to the existence of gaps, which affect the inflation accuracy and the normal operation of the device.

[0043] In order to control the opening and closing of the outlets of the two high-pressure pipes 14, please refer to Figure 3 , in a preferred embodiment, the second control component 7 includes two valves 71, and the two valves 71 are respectively arranged at the outlets of the two high-pressure pipes 14.

[0044] During use, when the inflation device is not working, the two valves 71 are in a closed state. This can effectively prevent the possible leakage of residual gas in the high-pressure pipes 14 and also avoid external air or impurities from entering the high-pressure pipes 14. When the stab needle 3 triggers the gas cylinder 4 to release gas and the gas pressure in the high-pressure pipes 14 reaches a certain preset value, the valves 71 open. After the valves 71 open, the gas in the high-pressure pipes 14 enters the exhaust pipe 15 through the valves 71. The opening degree of the valves 71 can control the flow rate of the gas.

[0045] To better understand the present invention, the following is combined with Figure 1 - Figure 4The working principle of the double gas cylinder 4 inflation device of the technical solution of the present invention is described in detail: the electric squib 2 is the gas generating starting component of the whole device. When the electric squib 2 is triggered and detonated, the pyrotechnic agent inside it reacts chemically rapidly to produce a large amount of high-temperature and high-pressure gas. These gases enter the double firing seat 1 through the air intake pipe 12. Since the outlet of the air intake pipe 12 is respectively connected to the inlet of the two gas distribution pipes 13, the gas is evenly divided into the two gas distribution pipes 13, preparing for the subsequent gas supply to the two high-pressure pipes 14. A needle 3 is slidably connected in each high-pressure pipe 14. When the pressure in the high-pressure pipe 14 reaches a certain level, the gas pressure will push the needle 3 to overcome the friction between it and the high-pressure pipe 14, so that the needle 3 moves rapidly. The movement of the needle 3 will pierce the sealing structure at the outlet of the corresponding gas cylinder 4, so that the high-pressure gas in the gas cylinder 4 enters the high-pressure pipe 14 through the second inlet of the high-pressure pipe 14. The outlets of the two high-pressure pipes 14 are both connected to the inlet of the exhaust pipe 15, and due to the effect of the pressure difference, they will flow to the exhaust pipe 15. The outlet of the exhaust pipe 15 can be connected to a device that needs to be inflated, so that the high-pressure gas is delivered to the target location to achieve the inflation function.

[0046] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A dual-cylinder inflation device, characterized in that: include: A double engine seat, the double engine seat comprising a seat body and an air intake pipe, two air distribution pipes, two high-pressure pipes and an exhaust pipe arranged in the seat body, the outlet of the air intake pipe is respectively connected to the inlet of the two air distribution pipes, the outlets of the two air distribution pipes are respectively connected to the first inlet of the two high-pressure pipes, and the outlets of the two high-pressure pipes are both connected to the inlet of the exhaust pipe; An electric squib, the outlet of which is connected to the inlet of the air intake pipe; Two puncture needles, the two puncture needles are slidably connected to two high-pressure tubes respectively; and, Two gas cylinders, the outlets of the two gas cylinders are respectively connected to the second inlets of the two high-pressure pipes.

2. A dual-cylinder inflation device according to claim 1, characterized in that: A plug is provided at one end of the high-pressure pipe away from the gas cylinder, and the plug is threadedly connected to the end of the high-pressure pipe.

3. A dual-cylinder inflation device according to claim 1, characterized in that: The puncture needle comprises a slider and a needle body. The slider is slidably connected in the high-pressure tube, and the needle body is arranged on one end of the slider close to the gas cylinder.

4. A dual-cylinder inflation device according to claim 3, characterized in that: The plug includes a plug body and a guide rod. The plug body is threadedly connected to the end of the high-pressure pipe. The guide rod is arranged on one end of the plug body close to the gas cylinder. The slider is provided with a guide groove matched with the guide rod.

5. A dual-cylinder inflation device according to claim 3, characterized in that: The sliding block is provided with a plurality of through holes.

6. A dual-cylinder inflation device according to claim 1, characterized in that: The air intake pipe is provided with a first control component for controlling the opening and closing of the inlets of the two air distribution pipes, and the exhaust pipe is provided with a second control component for controlling the opening and closing of the outlets of the two high-pressure pipes.

7. A dual-cylinder inflation device according to claim 6, characterized in that: The first control component includes a first tube body and a second tube body, the first tube body and the second tube body both extend along the axial direction of the intake pipe, the ends of the first tube body and the second tube body close to the intake pipe inlet are both open, the first tube body is provided with two first through holes, the second tube body is rotatably connected to the outer side of the first tube body, the second tube body is provided with two second through holes, the two first through holes coincide with the two second through holes respectively, the two second through holes coincide with the inlets of the two air distribution pipes respectively, the second tube body is also provided with a third through hole, and the double engine seat is provided with an adjustment component for adjusting the angle of the second tube body relative to the first tube body.

8. A dual-cylinder inflation device according to claim 7, characterized in that: The adjustment component includes a motor, a driving gear and a driven gear. The motor is arranged on a double-engine seat, the driving gear is fixed on the output shaft of the motor, the driven gear is fixedly sleeved on the outer side of the second tube, and the driving gear is meshed with the driven gear.

9. A dual-cylinder inflation device according to claim 7, characterized in that: The outer side of the first tube body is connected with a sealing airbag, and one end of the sealing airbag close to the electric squib is opened. When the sealing airbag is in a saturated state, the sealing airbag abuts against the inner side of the second tube body.

10. A dual-cylinder inflation device according to claim 6, characterized in that: The second control component includes two valves, and the two valves are respectively arranged at the outlets of the two high-pressure pipes.

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