CN212754351U - Wearable gas generator - Google Patents

Abstract

The utility model discloses a wearable gas generator, including compressed gas cylinder, exhaust subassembly and amortization subassembly, the exhaust subassembly includes exhaust hood and kuppe, exhaust hood one end with compressed gas cylinder links to each other and forms first inflation chamber between the two, ignition set up in just communicate in the exhaust hood first inflation chamber, the kuppe cover is located outside the exhaust hood, the joint of ignition stretches out exhaust hood and kuppe, form second inflation chamber between kuppe and the exhaust hood, set up in ignition utensil a plurality of first air guide holes intercommunication all around first inflation chamber and second inflation chamber, second inflation chamber is connected with the gas outlet, the amortization subassembly passes through the adapter and connects the gas outlet. The utility model discloses can guarantee that release can not cause the influence to the human body when quick, safe and reliable, simple structure simultaneously.

Description

Wearable gas generator

Technical Field

The utility model relates to an emergent lifesaving technical field, concretely relates to wearable gas generator.

Background

Gas generators are commonly used in airbags to rapidly release gas to inflate the airbag. Most of the gas generators on the market are used in the industrial range at present, have complex structures, usually have larger weight and volume, and are not suitable for being used in human body protection airbags. In the prior art, a gas generator also adopts chemical substances to react to generate gas, and adopts a common gas generating agent, a booster tube directly detonates the gas generating agent in the safety airbag to react to generate gas, although the gas generating speed is high, the reaction is very violent, the volume is large, the temperature of chemical agent combustion gas is high, usually more than 2000 ℃, the sound is violent, the danger is high, and the safety and the reliability are low, for example: a gas generator of a vehicle-mounted airbag; the negative pressure is formed inside the gas generator after the gas generating agent is rapidly combusted or exploded, if flammable and explosive gas is sucked from the outside, secondary combustion or explosion can be caused when local high temperature is met, personal injury can be caused even on the premise of good fixation, and the gas generating agent cannot be worn by a human body.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a wearable gas generator who is suitable for human wearing can not cause the influence to the human body when guaranteeing that the release is quick, safe and reliable, simple structure simultaneously.

In order to solve the technical problem, the utility model provides a wearable gas generator, including compressed gas cylinder, exhaust subassembly and amortization subassembly, the exhaust subassembly includes exhaust hood and kuppe, exhaust hood one end with compressed gas cylinder links to each other and forms first inflation chamber between the two, light set up in just communicate in the exhaust hood first inflation chamber, the kuppe cover is located outside the exhaust hood, the joint of light set stretches out exhaust hood and kuppe, form second inflation chamber between kuppe and the exhaust hood, set up in light a plurality of first air guide hole intercommunication all around of utensil first inflation chamber and second inflation chamber, second inflation chamber is connected with the gas outlet, the amortization subassembly passes through the adapter and connects the gas outlet.

Furthermore, the exhaust hood comprises a first connector and a second connector, the first connector is sleeved outside the compressed gas cylinder, the guide hood is sleeved outside the second connector, the ignition tool is arranged in one end, connected with the first connector, of the second connector, the guide hood is abutted against the first connector, and a first sealing ring is arranged between the first connector and the first connector.

Furthermore, the middle part of the air guide sleeve is connected with the middle part of the second connector, a second expansion cavity and a third expansion cavity are formed between the two ends of the second connector respectively, a plurality of second air guide holes communicated with the second expansion cavity and the third expansion cavity are formed in the middle part of the air guide sleeve, and the air outlet is connected with the third expansion cavity.

Furthermore, a second sealing ring is arranged between the air guide sleeve and the end part of the second connecting head.

Furthermore, the air guide sleeve is detachably connected with the exhaust hood.

Furthermore, a ferrule is sleeved outside the igniter, and the ferrule is abutted to the opening of the compressed gas cylinder.

Furthermore, the amortization subassembly includes intake pipe, hush pipe, perforated pipe and outlet duct, the intake pipe with hush pipe one end is met, perforated pipe set up in the hush pipe, the length of perforated pipe with hush pipe's length corresponds, the internal diameter of intake pipe is less than the internal diameter of perforated pipe, perforated pipe with form the sound-absorbing chamber between the hush pipe, be provided with a plurality of through-holes on the perforated pipe in order to communicate sound-absorbing chamber and perforated pipe inner space, the outlet duct connect in the hush pipe other end, the internal diameter of outlet duct is less than the internal diameter of perforated pipe.

Furthermore, sound absorption cotton is arranged in the sound absorption cavity.

Further, intake pipe and hush pipe integrated into one piece, the gas outlet pipe tip outside is provided with spacing boss.

Further, the gas outlet set up in exhaust subassembly's side, the amortization subassembly with compressed gas cylinder parallel arrangement, the adapter is the right angle adapter.

The utility model discloses a wearable gas generator compares beneficial effect with prior art is, realizes filtering and the amortization to high-pressure gas, reduces the sound of gas generator work, improves gas generator's security to more be suitable for wearable equipment and use.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a second embodiment of the present invention;

fig. 4 is an exploded view of the present invention.

The reference numbers in the figures illustrate: 10. the gas compressor comprises a compressed gas cylinder, 20, an exhaust assembly, 21, an exhaust hood, 211, a first connector, 212, a second connector, 213, a first sealing ring, 214, a second sealing ring, 22, a flow guide hood, 23, an ignition tool, 231, a ferrule, 24, a first expansion cavity, 25, a second expansion cavity, 26, a first air guide hole, 27, a gas outlet, 28, a third expansion cavity, 29, a second air guide hole, 30, a silencing assembly, 31, a gas inlet pipe, 32, a silencing pipe, 33, a porous pipe, 34, a gas outlet pipe, 35, a sound absorbing cavity, 36, a through hole, 37, a limiting boss, 40 and an adapter.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Referring to fig. 1, a cross-sectional view of a wearable gas generator according to an embodiment of the present invention is shown. The utility model discloses a gas generator includes compressed gas bottle 10, exhaust subassembly 20 and amortization subassembly 30, and exhaust subassembly 20 is used for opening compressed gas bottle 10 to high-pressure gas to rushing out filters, and high-pressure gas after the filtration gets into aerating device after amortization of amortization subassembly 30, inflates aerating device. The utility model discloses an in the embodiment, for reducing the space that gas generator occupy, will amortization subassembly 30 with compressed gas cylinder 10 parallel arrangement, for convenient intercommunication amortization subassembly 30 and exhaust subassembly 20 this moment, gas outlet 27 set up in the side of exhaust subassembly 20, adapter 40 is right angle adapter 40. The utility model discloses an in other embodiments, can confirm the relative position of amortization subassembly 30 and exhaust subassembly 20 according to the gas cylinder actual setting position, and then set up suitable gas outlet 27 position and adapter 40 shape.

Specifically, referring to fig. 2, a cross-sectional view of an embodiment of the present invention is shown. In this embodiment, exhaust assembly 20 includes exhaust hood 21 and kuppe 22, exhaust hood 21 one end with compressed gas cylinder 10 links to each other and forms first inflation chamber 24 between the two, ignition utensil 23 set up in the exhaust hood 21 and the intercommunication first inflation chamber 24, kuppe 22 cover is located outside the exhaust hood 21, the joint of ignition utensil 23 stretches out exhaust hood 21 and kuppe 22, form second inflation chamber 25 between kuppe 22 and the exhaust hood 21, set up in ignition utensil 23 a plurality of first air guide holes 26 intercommunication all around first inflation chamber 24 and second inflation chamber 25, second inflation chamber 25 is connected with gas outlet 27, amortization subassembly 30 passes through adapter 40 and connects gas outlet 27.

After the components are installed, the joint of the igniter 23 is conveniently connected with the joint of an external control system, the control system controls the igniter 23 to explode, the igniter 23 is attached to the opening of the compressed gas cylinder 10, the explosion impact of the igniter 23 can instantaneously break through the opening of the compressed gas cylinder 10, and high-pressure gas in the compressed gas cylinder 10 is released. The gas enters the first expansion cavity 24 and enters the second expansion cavity 25 through the first gas guide holes 26, and the first gas guide holes 26 are distributed around the ignition tool 23, namely the first gas guide holes 26 do not correspond to the opening of the compressed gas cylinder 10, so that the gas of the compressed gas cylinder 10 is flushed out and then diffused to the periphery of the first expansion cavity 24 to pass through the first gas guide holes 26, and in the process, fragments at the opening of the compressed gas cylinder 10 cannot turn, and therefore, part of fragments are filtered. And because the first air guide holes 26 are small in diameter and are distributed at intervals, a part of fragments are filtered. After the gas enters the second expansion cavity 25, the gas flows out from the gas outlet 27, and because the first gas guide hole 26 is provided with a circle, when the gas outlet 27 does not correspond to the first gas guide hole 26, another part of fragments are filtered, so that the safety of the flushed gas is ensured, and the fragments in the gas are prevented from damaging the inflating device. Meanwhile, the inner diameter of the first expansion cavity 24 is larger than that of the first air guide hole 26, and the inner diameter of the first air guide hole 26 is smaller than that of the second expansion cavity 25, so that in the process of transmitting sound waves in the exhaust assembly 20, part of the sound waves are blocked in the exhaust assembly 20 due to cavity reflection, preliminary silencing is realized, in order to further reduce the volume of the igniter 23 for bursting the compressed gas cylinder 10 and rushing out high-pressure gas, the gas enters the silencing assembly 30 after flowing out of the second expansion cavity 25, the silencing assembly 30 further silences the gas, the gas is guaranteed to rush out at low decibels, the influence on people when the inflating device inflates is reduced, and the violent bursting sound is prevented from scaring away the user. Simultaneously because ignition device 23 sets up in exhaust hood 21, ignition device 23 periphery is provided with the first air guide hole 26 of a week, has thicker separation between ignition device 23 and the external world promptly, can guarantee that the explosion of ignition device 23 can not lead to the fact the influence to outside user, and first air guide hole 26 has the thermal efficiency of separation, ensures that the heat that ignition device 23 explosion produced can not transmit to the user, greatly increased gas generator's security, guarantees the utility model discloses a gas generator is suitable for wearable equipment. In order to further improve the efficiency of the igniter 23 in breaking the compressed gas cylinder 10 and to restrain the impact force of the igniter 23 during explosion, a ferrule 231 is sleeved outside the igniter 23, and the ferrule 231 abuts against the opening of the compressed gas cylinder 10. The inner diameter of the ferrule 231 is smaller than the mouth of the compressed gas cylinder 10, the igniter 23 is surrounded by the ferrule 231, the abutting range of the ferrule 231 is the weakest position of the mouth of the compressed gas cylinder 10, the shock wave generated when the igniter 23 is ignited is limited in the space surrounded by the ferrule 231, the exhaust cover 21 and the mouth of the compressed gas cylinder 10, and the mouth of the compressed gas cylinder 10 is weakest, so that the compressed gas cylinder can be burst rapidly to release high-pressure gas.

Referring to fig. 3 and 4, in order to facilitate the connection of the igniter 23 to extend out to be connected with the outside, and simultaneously reduce the volume of the exhaust assembly 20 as much as possible so as to be suitable for wearable equipment, the exhaust hood 21 includes a first connection joint 211 and a second connection joint 212, the first connection joint 211 is sleeved outside the compressed gas cylinder 10, the air guide sleeve 22 is sleeved outside the second connection joint 212, the igniter 23 is arranged in the end where the second connection joint 212 and the first connection joint 211 are connected, the air guide sleeve 22 abuts against the first connection joint 211, and a first sealing ring 213 is arranged between the first connection joint 211 and the second connection joint 212. At this time, only the joint of the ignition device 23 needs to be arranged to extend out of the second joint 212, and the air guide sleeve 22 can be arranged to have the same outer diameter as the exhaust hood 21, when the air guide sleeve 22 compacts the first joint 211, the air guide sleeve 22 and the exhaust hood 21 are connected in place, which is convenient for installation.

Furthermore, the middle of the air guide sleeve 22 is connected with the middle of the second connector 212, the air guide sleeve 22 is connected with the two ends of the second connector 212 to form a second expansion cavity 25 and a third expansion cavity 28, the middle of the air guide sleeve 22 is provided with a plurality of second air guide holes 29 communicated with the second expansion cavity 25 and the third expansion cavity 28, and the air outlet 27 is connected with the third expansion cavity 28. In this case, the high-pressure gas in the compressed gas cylinder 10 is injected into the first expansion cavity 24, because the diameter of the first gas guide hole 26 is small, fragments at the opening of the compressed gas cylinder 10 brought out of the gas are blocked by the first gas guide hole 26 and cannot be sprayed out, the gas enters the second expansion cavity 25 through the first gas guide hole 26, because the size of the second expansion cavity 25 is large, the gas escapes after entering through the gas guide hole with the small diameter, and further, a part of fragments cannot pass through the second gas guide hole 29, namely, the gas entering the third expansion cavity 28 is pure gas, and the filtering effect on the fragments is ensured. In this embodiment, the air outlet 27 is disposed at the side of the exhaust group. Because the air flow is axially ejected along the exhaust assembly 20, when the air outlet 27 is arranged at the side edge, the air flow needs to be turned, and the fragments in the air flow are pressed on the top surface of the exhaust assembly 20 by the air flow, so that the fragments cannot be turned, and the fragment filtering effect is further improved. And the silencing effect of the gas passing through the exhaust assembly 20 is further improved due to the multiple changes of the size of the chamber. In this embodiment, in order to ensure the sealing of the second expansion chamber 25 and the third expansion chamber 28, a first sealing ring 213 is disposed between the pod 22 and the first connector, and a second sealing ring 214 is disposed between the pod 22 and the end of the second connector 212.

Because be provided with ignition 23 in the gas generator, ignition 23 needs to be connected with external control system, consequently among the prior art, need return the whole factory of equipment that contains gas generator and carry out the gas cylinder reset after gas generator uses once, consuming time and wasting power, with high costs. And the utility model discloses in, for convenience of customers changes the gas cylinder by oneself, connect 23 igniters to set up to directly stretch out exhaust assembly 20 outside to the user can realize 23 igniters and external control system's being connected through direct plug connector. The present embodiment further provides a detachable connection, such as a threaded connection, between the dome 22 and the exhaust hood 21. When the gas generator is used once, the compressed gas cylinder 10 and the ignition device 23 need to be replaced, and the ignition device 23 is arranged between the exhaust hood 21 and the compressed gas cylinder 10, so that a user separates the exhaust hood 21 from the flow guide hood 22, namely, the gas cylinder and the ignition device 23 are removed at the same time, and then the new compressed gas cylinder 10 and the exhaust hood 21 are combined with the flow guide hood 22 to be installed, namely, the compressed gas cylinder 10 and the ignition device 23 are replaced, so that the replacement is convenient, and the time and the cost are greatly saved.

The utility model discloses in, for the volume when reducing high-pressure gas and rushing out, be provided with amortization subassembly 30. The silencing assembly 30 comprises an air inlet pipe 31, a silencing pipe 32, a perforated pipe 33 and an air outlet pipe 34, wherein the air inlet pipe 31 is connected with one end of the silencing pipe 32, the perforated pipe 33 is arranged in the silencing pipe 32, the length of the perforated pipe 33 corresponds to that of the silencing pipe 32, the inner diameter of the air inlet pipe 31 is smaller than that of the perforated pipe 33, a sound absorption cavity 35 is formed between the perforated pipe 33 and the silencing pipe 32, a plurality of through holes 36 are formed in the perforated pipe 33 to communicate the sound absorption cavity 35 with the inner space of the perforated pipe 33, the air outlet pipe 34 is connected to the other end of the silencing pipe 32, and the inner diameter of the air outlet pipe 34 is smaller than that of the perforated pipe 33.

The air inlet pipe 31 is connected with the air outlet 27 through the adapter 40, high-pressure gas and sound waves enter the porous pipe 33 after passing through the air inlet pipe 31, and because the inner diameter of the air inlet pipe 31 is smaller than the inner diameter of the porous pipe 33, namely, the high-pressure gas enters the porous pipe 33 with a large diameter from the air inlet pipe 31 with a small diameter, the gas speed is reduced, the pressure is increased, and meanwhile, the sound waves also enter the porous pipe 33 with a large diameter from the air inlet pipe 31 with a small diameter, so that a part of the sound waves can only reflect back and forth on the pipe wall of the porous pipe 33 and cannot penetrate out from the air outlet pipe 34 to achieve the sound attenuation purpose. The high-pressure gas continuously rushes out from the gas outlet pipe 34, and the inner diameter of the gas outlet pipe 34 is smaller than that of the porous pipe 33, so that more sound waves are prevented from being transmitted out, and the further noise reduction effect is achieved. Through the change of gas transmission pipeline internal diameter and the setting of more cavities in this embodiment to make the sound wave can't spread out, realize the noise reduction effect, simple structure, noise reduction and noise reduction are effectual. In order to enable the sound waves to be further absorbed in the sound absorption cavity 35, sound absorption cotton is arranged in the sound absorption cavity 35. Therefore, the sound waves entering the noise reduction pipe can be absorbed by the sound absorption cotton, and the noise reduction effect is further improved. In this embodiment, the air inlet pipe 31 and the silencing pipe 32 are integrally formed for convenient processing, and since the size of the porous pipe 33 is larger than that of the air inlet pipe 31 and the air outlet pipe 34, the porous pipe 33 is disposed in the silencing pipe 32 for convenient processing, and the air outlet pipe 34 is separately disposed. The gas generator of this embodiment is used for inflating the gasbag, and for convenient fixed gasbag, the outside of 34 tip of outlet duct is provided with spacing boss 37. Outside amortization subassembly 30 was located to the gasbag cover, utilized the ribbon to fix gasbag and outlet duct 34, because spacing boss 37 blocks, can guarantee the stability of gasbag connection. In the embodiment, the air bag is connected with the silencing component 30, so that the exhaust component 20 can be exposed to the outside, and a user can replace the air bottle conveniently. In other embodiments of the present invention, the air outlet 27 may be further provided with other connecting means such as a screw thread.

The utility model discloses at the during operation, tighten the air inlet and the amortization subassembly 30 of gasbag, it is fixed with wearing equipment with amortization subassembly 30, make exhaust subassembly 20 expose wearing equipment's pocket or other positions, because gas cylinder and exhaust subassembly 20 all are located the position that the user can contact this moment to after gas generator uses, the user conveniently changes by oneself. During the use, 23 point explosions of ignition utensil, the bottleneck of breaking compressed gas bottle 10, high-pressure gas passes through first inflation chamber 24, first air guide 26, second inflation chamber 25, second air guide 29, third inflation chamber 28, adapter 40, intake pipe 31, hush pipe 32, finally discharges from outlet duct 34, utilizes the dimensional change in each locular hole, realizes the filtration to piece and sound wave in the gas, reduces the reaction of gas generator during operation, ensures gas generator's security, makes the utility model discloses a gas generator more is suitable for wearable equipment and uses.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims (10)

1. The utility model provides a wearable gas generator, its characterized in that, includes compressed gas cylinder, exhaust subassembly and amortization subassembly, the exhaust subassembly includes exhaust hood and kuppe, exhaust hood one end with compressed gas cylinder links to each other and forms first inflation chamber between the two, ignition utensil set up in just intercommunication in the exhaust hood first inflation chamber, the kuppe cover is located outside the exhaust hood, the joint of ignition utensil stretches out exhaust hood and kuppe, form second inflation chamber between kuppe and the exhaust hood, set up in ignition utensil a plurality of first air guide holes intercommunication all around first inflation chamber and second inflation chamber, second inflation chamber is connected with the gas outlet, the amortization subassembly passes through the adapter and connects the gas outlet.

2. The wearable gas generator according to claim 1, wherein the exhaust hood comprises a first connector and a second connector, the first connector is sleeved outside the compressed gas cylinder, the deflector is sleeved outside the second connector, the igniter is disposed inside an end of the second connector connected to the first connector, the deflector abuts against the first connector, and a first seal ring is disposed therebetween.

3. The wearable gas generator according to claim 2, wherein the middle part of the air guide sleeve is connected to the middle part of the second connector, a second expansion cavity and a third expansion cavity are respectively formed between the air guide sleeve and the two ends of the second connector, a plurality of second air guide holes are formed in the middle part of the air guide sleeve and are communicated with the second expansion cavity and the third expansion cavity, and the air outlet is connected to the third expansion cavity.

4. The wearable gas generator of claim 3, wherein a second seal ring is disposed between the pod and the second connector end.

5. The wearable gas generator of claim 1, wherein the baffle is removably coupled to the exhaust hood.

6. The wearable gas generator of claim 1 wherein the igniter jacket has a collar that abuts the port of the compressed gas cylinder.

7. The wearable gas generator according to claim 1, wherein the muffler assembly comprises an inlet pipe, a muffler pipe, a perforated pipe and an outlet pipe, the inlet pipe is connected to one end of the muffler pipe, the perforated pipe is disposed inside the muffler pipe, the perforated pipe has a length corresponding to that of the muffler pipe, the inlet pipe has an inner diameter smaller than that of the perforated pipe, a sound-absorbing chamber is formed between the perforated pipe and the muffler pipe, a plurality of through holes are formed in the perforated pipe to communicate the sound-absorbing chamber with an inner space of the perforated pipe, the outlet pipe is connected to the other end of the muffler pipe, and the outlet pipe has an inner diameter smaller than that of the perforated pipe.

8. The wearable gas generator of claim 7 wherein sound absorbing cotton is disposed within the sound absorbing chamber.

9. The wearable gas generator of claim 7, wherein the inlet tube is integrally formed with the silencer tube, and the outer side of the end of the outlet tube is provided with a limiting boss.

10. The wearable gas generator of claim 1, wherein the gas outlet is disposed at a side of the exhaust assembly, the noise reduction assembly is disposed parallel to the compressed gas cylinder, and the adapter is a right angle adapter.

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