Inflatable airbag assembly

Abstract

The utility model discloses an inflatable air bag assembly which comprises an outer air bag, an inner air bag is arranged on the inner side of the outer air bag, a plurality of connecting point columns are fixed between the outer air bag and the inner air bag, an inflatable air nozzle is installed on the outer air bag, and a pair of air inlet pipes communicated with an outer air bag cavity and an inner air bag cavity respectively are fixed to an air pipe of the inflatable air nozzle. And air inlet one-way valves are mounted on the two air inlet pipes. The single-layer air bag puncture needle is high in safety, can be normally used even if the single-layer air bag is punctured, greatly improves safety, and is worthy of popularization and application.

Description

TECHNICAL FIELD

[0001] The utility model relates to an air bag, especially a combined air bag, in particular to an inflatable air bag assembly. BACKGROUND

[0002] As a passive safety protection device, the inflatable air bag is widely used in the fields of sports protection equipment and swimming equipment. The traditional single-layer air bag structure forms a buffer medium by inflation, but it has problems such as insufficient dynamic pressure maintenance ability and limited external puncture resistance. Especially when dealing with high-intensity impact or complex working conditions, the single-layer air bag may experience sudden pressure drop and local rupture, leading to overall failure.

[0003] Chinese utility model patent CN 211483878 U discloses an inflatable air bag, which comprises an air bag body, an installation part is arranged on the air bag body, a sound emitting device is installed on the installation part, the installation part comprises a first interlayer and a second interlayer arranged vertically, and the sound emitting device is fixed between the first interlayer and the second interlayer. The inflatable air bag adopts a single-layer air bag structure, which may cause sudden pressure drop, local rupture and overall failure when dealing with high-intensity impact or complex working conditions. SUMMARY

[0004] The utility model solves the above-mentioned defects of the prior art and provides an inflatable air bag assembly with high safety and single-layer puncture resistance, which meets the demand for high safety.

[0005] The utility model solves the technical problems by adopting the following technical scheme: the inflatable air bag assembly comprises an outer air bag, an inner air bag arranged on the inner side of the outer air bag, a plurality of connecting point columns fixed between the outer air bag and the inner air bag, an inflatable air nozzle installed on the outer air bag, a pair of air inlet pipes fixed on the air nozzle air pipe and communicating with the outer air bag cavity and the inner air bag cavity respectively, and air inlet one-way valves installed on the two air inlet pipes. The outer air bag and the inner air bag are arranged to provide high safety and single-layer puncture resistance. The connecting point columns tightly fix the outer air bag and the inner air bag together. The inflatable air nozzle, the air inlet pipes and the air inlet one-way valves can simultaneously inflate the outer air bag and the inner air bag, and have higher efficiency.

[0006] Further improvement: the outer surface of the outer air bag is provided with a circular groove tapering from large to small, and the inflatable air nozzle is installed at the circular groove and the inflatable head of the air nozzle is located in the circular groove. The circular groove and the inflatable head of the air nozzle located in the circular groove can avoid the air inlet one-way valve from being touched, bumped or moved when the air bag is used, thereby avoiding the air inlet one-way valve and the joint of the air bag from being cracked and leaking, and providing a better experience.

[0007] Further improvements include an intake one-way valve comprising a first baffle fixed to the intake pipe, the first baffle having several first vent holes, and a rubber sealing plate covering all the first vent holes at a relative position to the first baffle. A first return spring is installed between the rubber sealing plate and the inner wall of the intake pipe. The function of the first baffle, first vent holes, rubber sealing plate, and first return spring is to allow the high-pressure air pumped by the air pump to pass through each first vent hole, open the rubber sealing plate, and compress and store energy in the first return spring. This ensures that only the air pump inflates the airbag, preventing gas from leaking out. When the air pump stops pumping, the first return spring, through its restoring force and the pressure of the air inside the airbag, causes the rubber sealing plate to tightly press against each first vent hole, thus allowing only one-way air intake and preventing gas leakage from the airbag.

[0008] Further improvements include: a pair of upper and lower opposing second baffles fixed to the air tube of the inflation nozzle; a first insertion hole coaxially arranged on each of the two second baffles; several second vent holes on each of the two second baffles; a pressure rod inserted into each of the two insertion holes; a conical block, smaller at the bottom and larger at the top, fixed to the bottom of the pressure rod; a first stop block with a cross-section larger than the pressure rod fixed to the pressure rod; and a second return spring installed between the first stop block and the top surface of the lower second baffle. Third baffles are fixed to both air inlets; a second insertion hole with a square cross-section is opened on each of the two third baffles; a square rod inserted into each of the two second insertion holes; several third vent holes on each of the two third baffles; several top rods matching the position and size of each first vent hole fixed to the outer ends of the two square rods; a second stop block with a cross-section larger than the square rod fixed to each of the two square rods; and a third return spring installed between the side ends of the two second stop blocks and the side ends of the two third baffles. The functions of the second baffle, first insertion hole, pressure rod, conical block, first stop block, second return spring, third baffle, square rod, top rod, second stop block, and third return spring are to allow manual deflation of the inflatable airbag, thereby reducing its volume for easier carrying and transportation. The functions of the second and third vent holes are to ensure that the airflow is not affected when the air pump is inflating. The function of the square-section second insertion hole and square rod is to prevent the square rod from rotating axially when the conical block presses it, thus ensuring that the top rod and the first vent hole are accurately aligned.

[0009] Further improvements include ball joints on the opposite end faces of both square rods. The purpose of these ball joints is to reduce frictional resistance when the conical block presses down on the square rods, making it easier to move the square rods by pressing down with the pressure rod and driving the conical block.

[0010] Further improvements include the use of polytetrafluoroethylene (PTFE) for both square rods and the pressure rod. The purpose of using PTFE for these components is to provide them with self-lubricating properties, ensuring smoother movement and preventing jamming.

[0011] The utility model has the advantages of:

[0012] 1. The outer air bag, the inner air bag and the connecting point column can make the outer air bag float when it is punctured, greatly improving the safety;

[0013] 2. The inflating air nozzle, the air inlet pipe and the air inlet check valve can inflate the outer air bag and the inner air bag synchronously, improving the inflation efficiency;

[0014] 3. The check valve can inflate the outer air bag and the inner air bag synchronously, without leakage, fast inflation and good effect; the pressure rod, the first stop block, the conical block, the second reset spring, the square rod, the second stop block and the third reset spring can deflate the outer air bag and the inner air bag synchronously, reduce the volume and then store and place, facilitating transportation. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model;

[0016] Figure 2 It is Figure 1 the A area local amplification diagram;

[0017] Figure 3 It is a structural schematic view of the pressure rod area in the utility model;

[0018] Figure 4 It is a structural schematic view of the rubber sealing plate area in the utility model;

[0019] Figure 5 It is a working principle flow chart of inflating the inflating cylinder to open the rubber sealing plate and inflate;

[0020] Figure 6 It is a working principle flow chart of manually deflating the air bag by pressing the pressure rod.

[0021] The outer air bag 1, the circular groove 1-1, the inner air bag 2, the connecting point column 3, the inflating air nozzle 4, the air inlet pipe 4-1, the air inlet check valve 4-2, the first baffle 4-2a, the first vent hole 4-2b, the rubber sealing plate 4-2c, the first reset spring 4-2d, the second baffle 5, the first jack 5-1, the second vent hole 5-2, the pressure rod 6, the first stop block 6-1, the conical block 7, the second reset spring 8, the third baffle 9, the second jack 9-1, the third vent hole 9-2, the square rod 10, the jacking rod 10-1, the second stop block 10-2, the third reset spring 11, the ball 12. DETAILED DESCRIPTION

[0022] The utility model will be further described below with reference to the drawings:

[0023] With reference to the drawings; this air bag assembly, comprising the outer air bag 1, the inner side of the outer air bag 1 is provided with the inner air bag 2, a plurality of connecting point columns 3 are fixed between the outer air bag 1 and the inner air bag 2, the outer air bag 1 is provided with the inflation air nozzle 4, the inflation air nozzle 4 is fixed with a pair of air inlet pipes 4-1 which are respectively communicated with the cavity of the outer air bag 1 and the cavity of the inner air bag 2, and the two air inlet pipes 4-1 are both provided with air inlet one-way valves 4-2.

[0024] The outer surface of the outer air bag 1 is provided with a circular groove 1-1 which is large inside and small outside in a conical shape, the inflation air nozzle 4 is installed at the circular groove 1-1 and the inflation head of the inflation air nozzle 4 is located in the circular groove 1-1.

[0025] The air inlet one-way valve 4-2 comprises a first baffle 4-2a fixed on the air inlet pipe 4-1, a plurality of first air holes 4-2b are opened on the first baffle 4-2a, a rubber sealing plate 4-2c which covers all the first air holes 4-2b is arranged at the opposite position of the first baffle 4-2a, and a first reset spring 4-2d is installed between the rubber sealing plate 4-2c and the inner wall of the air inlet pipe 4-1.

[0026] The inflation air nozzle 4 is fixed with a pair of second baffles 5 which are arranged oppositely upwards and downwards, coaxial first insertion holes 5-1 are opened on the two second baffles 5, a plurality of second air holes 5-2 are opened on the two second baffles 5, pressure rods 6 are inserted at the two insertion holes 5-1, a lower small and upper large conical block 7 is fixed at the bottom end of the pressure rod 6, a first stop block 6-1 with a larger cross section than the pressure rod 6 is fixed on the pressure rod 6, a second reset spring 8 is installed between the first stop block 6-1 and the top surface of the lower second baffle 5; a third baffle 9 is fixed on each of the two air inlet pipes 4-1, a second insertion hole 9-1 with a square cross section is opened on each of the two third baffles 9, square rods 10 are inserted at the two second insertion holes 9-1, a plurality of third air holes 9-2 are opened on each of the two third baffles 9, a plurality of jacks 10-1 which are matched with the positions and sizes of the first air holes 4-3b are fixed at the outer ends of the two square rods 10, second stop blocks 10-2 with larger cross sections than the square rods 10 are fixed on the two square rods 10, and third reset springs 11 are installed between the side ends of the two second stop blocks 10-2 and the side ends of the two third baffles 9.

[0027] Ball bearings 12 are spherically connected to the end faces of the opposite sides of the two square rods 10.

[0028] The two square rods 10 and the pressure rod 6 are both made of polytetrafluoroethylene material.

[0029] The utility model discloses a working principle: when needing to inflate the inflatable air bag, only need to pass the inflator or pinch the air bag (not drawn in the drawing) and install on the inflation air nozzle through the hose, carry out inflation, and high pressure gas will pass the first vent hole 4-2b of both sides synchronously and rush open rubber sealing plate 4-2c, so that the first return spring 4-2d carries out compression energy storage, so that the gas is filled into the outer air bag 1 and the inner air bag 2 synchronously, when the inflator or pinch the air bag stops pumping, the first return spring 4-2d makes rubber sealing plate 4-2c press tightly each first vent hole 4-2b (such as Figure 5 ) through the reset force effect and the gas pressure extrusion effect in the outer air bag and the inner air bag, so that only one-way air inlet, and the outer air bag 1 and the inner air bag 2 will not leak, when needing to deflate the outer air bag 1 and the inner air bag 2 synchronously by manpower, so as to store or transport, only need to press the press rod 6, so that the conical block 7 moves down and press the square bar 10 of both sides to move outward, so that the second return spring 8 and the third return spring 11 are compressed energy storage synchronously, and the square bar 10 moves outward in the opposite direction through the low friction pressure of the ball 12 and the conical block 7 outer contour taper surface, so that the rubber sealing plate 4-2c is pressed open through the respective top rod 10-1, so as to deflate the inflatable air bag (such as Figure 6 ), after the press rod 6 is released, the rubber sealing plate 4-2c, the square bar 10 and the press rod 6 are reset synchronously through the reset force effect of the second return spring 8, the third return spring 11 and the first return spring 4-2d. Through the outer air bag 1, the inner air bag 2 and the connecting point column 3, when the outer air bag 1 is punctured, the inner air bag 2 can still float, greatly improving the safety; through the inflation air nozzle 4, the outer air bag 1 and the inner air bag 2 can be inflated synchronously, improving the inflation efficiency; through the air inlet one-way valve 4-2, the outer air bag 1 and the inner air bag 2 can be inflated synchronously, and there is no leakage, fast inflation, good effect; through the press rod 6, the first stop block 6-1, the conical block 7, the second return spring 8, the square bar 10, the second stop block 10-2 and the third return spring 11, the outer air bag 1 and the inner air bag 2 can be deflated synchronously, the volume can be reduced, and the storage, placement and convenient transportation can be carried out; the utility model can be processed into life jackets, follow the bug and life neck sleeve and other water lifesaving tools, and can be processed into cushions and other lying and sitting air cushions, and the universality is extremely strong, the safety is extremely high, and it is worth popularization and application.

[0030] Although the utility model has been illustrated and described through the reference preferred embodiment, but, the professional ordinary skilled person should understand, in the scope of the claims, can make various changes in form and detail.

Claims

1. An airbag module comprising an outer airbag (1), characterized by: The inner side of the outer air bag (1) is provided with an inner air bag (2), a plurality of connecting point columns (3) are fixed between the outer air bag (1) and the inner air bag (2), an inflation air nozzle (4) is installed on the outer air bag (1), and a pair of air inlet pipes (4-1) respectively communicating with the cavity of the outer air bag (1) and the cavity of the inner air bag (2) are fixed on the air pipe of the inflation air nozzle (4).

2. An air bag module according to claim 1, characterized in that: The outer surface of the outer air bag (1) is provided with a circular groove (1-1) which is large inside and small outside in a conical shape, and the inflation air nozzle (4) is installed at the circular groove (1-1) and the inflation head of the inflation air nozzle (4) is located in the circular groove (1-1).

3. An air bag module according to claim 1, characterized in that: The air inlet one-way valve (4-2) comprises a first baffle (4-2a) fixed on the air inlet pipe (4-1), a plurality of first air holes (4-2b) are formed in the first baffle (4-2a), and a rubber sealing plate (4-2c) covering all the first air holes (4-2b) is arranged at the opposite position of the first baffle (4-2a). A first reset spring (4-2d) is arranged between the rubber sealing plate (4-2c) and the inner wall of the air inlet pipe (4-1).

4. An air bag module according to claim 3, characterized in that: A pair of second baffles (5) are fixed on the air pipe of the inflation air nozzle (4) and arranged oppositely upwards and downwards, a first insertion hole (5-1) is formed in each of the second baffles (5), a plurality of second air holes (5-2) are formed in each of the second baffles (5), a pressure rod (6) is inserted into each of the insertion holes (5-1), a lower small and upper large conical block (7) is fixed to the bottom end of the pressure rod (6), a first stop block (6-1) with a larger cross section than the pressure rod (6) is fixed on the pressure rod (6), and a second reset spring (8) is arranged between the first stop block (6-1) and the top surface of the second baffle (5) on the lower side. A third baffle (9) is fixed on each of the air inlet pipes (4-1), a second insertion hole (9-1) with a square cross section is formed in each of the third baffles (9), a square rod (10) is inserted into each of the second insertion holes (9-1), a plurality of third air holes (9-2) are formed in each of the third baffles (9), a plurality of jacks (10-1) matching the positions and sizes of the first air holes (4-2b) are fixed to the outer ends of the square rods (10), a second stop block (10-2) with a larger cross section than the square rod (10) is fixed on each of the square rods (10), and a third reset spring (11) is arranged between the side end of each of the second stop blocks (10-2) and the side end of each of the third baffles (9).

5. An air bag module according to claim 4, characterized in that: Ball bearings (12) are spherically connected to the end faces of the opposite sides of the square rods (10).

6. An air bag module according to claim 4, characterized in that: The square rods (10) and the pressure rod (6) are made of polytetrafluoroethylene material.

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