Air generator of passenger seat safety air bag

Abstract

The utility model relates to the technical field of gas generators, and discloses a co-driver seat safety airbag gas generator which comprises an installation support, a sealing cylinder is fixedly installed on the front face of the installation support, a gas processing mechanism is arranged on the sealing cylinder, and the gas processing mechanism comprises a flow dividing cylinder. A copper pipe is fixedly connected to the right side of the flow dividing barrel, the outer wall, close to the right end, of the copper pipe is fixedly sleeved with a honeycomb plate, and a storage barrel is fixedly connected to the left side of the honeycomb plate. Through the design of the refrigeration sheet, the cold end can be cooled after the refrigeration sheet works, cooling liquid in the storage cylinder can be rapidly cooled through heat transfer of the graphite plate and the heat exchange fins, gas generated in the sealing cylinder can flow through an inner cavity of the copper pipe, the cooling liquid exchanges heat with the gas in the process, the temperature of the gas is fully reduced, and the cooling effect is improved. The problem that passengers are easily scalded by the air bags wrapped with the high-temperature air is avoided, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas generators, and in particular to a gas generator for a passenger seat safety airbag. Background Art

[0002] At present, the technological level of the automobile industry is developing rapidly, and the technical improvement of automobile safety performance has also been strengthened. As a traditional classic safety protection device, airbags have been used to this day, and the improvement of the timeliness and effectiveness of airbags has never stopped. At present, the technical means used for airbags are mostly ignited by the ignition tube in the gas generator, which ignites the inflator and explodes to quickly produce nitrogen to fill the airbag, at a speed faster than the inertia of the human body at the moment of vehicle collision, to ensure the personal safety of passengers in the car. A columnar gas generator will be installed at the co-pilot seat of the car.

[0003] A Chinese patent discloses a gas generator for an airbag, with the publication number CN206344786U. The technical solution disclosed in the patent document is as follows: it includes a shell, a sealed cavity is provided in the shell, an ignition assembly and a combustion chamber are provided at one end of the sealed cavity, a guide tube is provided at the other end of the sealed cavity, an air outlet is provided at the end of the guide tube away from the ignition assembly, a sealing baffle is provided in the air outlet, and when the gas generator is not working, the guide tube and the sealing baffle can keep the sealed cavity in a sealed state.

[0004] In order to solve the problem of high-temperature and high-pressure gas and residue leaking from the gap between the filter and the upper shell of the generator, the existing technology adopts a method of designing a guide tube and an air outlet and other structures to deal with it. However, there is still a situation where the output gas cannot be fully cooled. The temperature of the output gas of this structure is relatively high, and the high-temperature gas will fill the airbag. When the passenger touches the airbag, he or she will be easily burned by the airbag wrapped in the high-temperature gas. Utility Model Content

[0005] The utility model aims to provide a gas generator for a passenger seat safety airbag, so as to solve the problem that the output gas cannot be sufficiently cooled in the prior art.

[0006] The utility model provides the following technical solutions: a passenger seat airbag gas generator, comprising a mounting bracket, a sealing cylinder fixedly mounted on the front of the mounting bracket, a gas processing mechanism being arranged on the sealing cylinder, the gas processing mechanism comprising a shunt cylinder, a copper tube being fixedly connected to the right side of the shunt cylinder, a honeycomb panel being fixedly sleeved on the outer wall of the copper tube close to the right end, a storage cylinder being fixedly connected to the left side of the honeycomb panel, the left side of the storage cylinder being fixedly connected to the right side of the shunt cylinder, the inner cavity of the storage cylinder being filled with coolant, a graphite plate being fixedly mounted on the inner wall of the storage cylinder, a refrigeration fin being fixedly mounted on the sides of the two graphite plates away from each other, a heat exchange fin being fixedly connected on the sides of the two graphite plates close to each other, the coolant being able to be cooled after the refrigeration fin is working, and the coolant can cool the flowing gas inside the copper tube to ensure the safety of the passengers.

[0007] As a preferred embodiment of the above technical solution, a groove is provided on the outer surface of the storage cylinder, and a chip temperature sensor is fixedly installed on the inner wall of the groove. The refrigeration plate and the chip temperature sensor are both connected with the external controller through electrical signals, and the chip temperature sensor is used to control the intermittent operation of the refrigeration plate.

[0008] As a preferred embodiment of the above technical solution, a receiving tube is fixedly connected to the right side of the honeycomb panel, and a flange output pipe is fixedly connected to the right side of the receiving tube. The receiving tube connects the inner cavities of multiple copper tubes to the inner cavity of the flange output pipe.

[0009] As a preferred embodiment of the above technical solution, a socket ring is fixedly sleeved on the outer wall of the diverter cylinder, a conductive wire is fixedly connected to the outer wall of the socket ring, and a clamp is fixedly connected to the end of the conductive wire away from the socket ring. The socket ring and the conductive wire can conduct static electricity to the external wire and then release it with the help of the car shark fin.

[0010] As a preferred embodiment of the above technical solution, a splicing piece is welded on the outer wall of the clamp, an external wire is detachably connected to the inner wall of the clamp, and the splicing piece cooperates with bolts to enable the clamp to be detachably connected to the outer wall of the external wire.

[0011] As a preferred embodiment of the above technical solution, the gas processing mechanism also includes a closed ring, which is fixedly installed on the right side of the mounting bracket, the diversion cylinder is fixedly connected to the right side of the closed ring, the right side of the closed ring is fixedly connected with an aluminum alloy mesh cylinder, and the right side of the closed ring is fixedly connected with a sponge filter cylinder located in the inner cavity of the aluminum alloy mesh cylinder. Through the design of the sponge filter cylinder, three filtrations of the gas can be completed.

[0012] As a preferred embodiment of the above technical solution, a connecting leg No. 1 is fixedly connected to the left side of the closed ring, a partition is fixedly connected to the left end of the connecting leg No. 1, the outer wall of the partition is fixedly connected to the inner wall of the sealing cylinder, and honeycomb holes are opened on the side of the partition, and the secondary filtration treatment of the gas can be completed through the cooperation of the partition and the honeycomb holes.

[0013] As a preferred embodiment of the above technical solution, a No. 2 connecting leg is fixedly connected to the left side of the partition, and an edge filter plate is fixedly connected to the left end of the No. 2 connecting leg. There is a gap between the edge filter plate and the inner wall of the sealing cylinder, which can complete the initial filtration of the gas.

[0014] As a preferred embodiment of the above technical solution, a closing block is fixedly installed on the left side of the inner wall of the sealing cylinder, an igniter is fixedly connected to the right side of the closing block, a first spacer ring is fixedly installed on the inner wall of the sealing cylinder, and a second spacer ring located on the right side of the first spacer ring is fixedly installed on the inner wall of the sealing cylinder. The igniter is controlled by the electronic control unit of the vehicle computer and works when a collision occurs.

[0015] As a preferred embodiment of the above technical solution, bursting membranes are fixedly connected to the inner walls of the first spacer ring and the second spacer ring, and the inner cavity of the sealing tube is filled with an inflator located between the first spacer ring and the second spacer ring. After the inflator is ignited, gas can be generated and break through the right bursting membrane to output the gas.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model adopts the design of the refrigeration plate, and the cold end can be cooled after operation. The heat transfer of the graphite plate and the heat exchange fins can quickly cool the coolant inside the storage cylinder. The gas produced in the sealing cylinder will flow through the inner cavity of the copper tube. During the process, the coolant will exchange heat with the gas to fully reduce the temperature of the gas, thereby avoiding the problem that passengers are easily scalded by the airbag wrapped in high-temperature gas, thereby improving the safety of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the cutaway structure of the sealing cylinder of the utility model;

[0020] Figure 3 It is a schematic diagram of the overall decomposition structure of the closed loop of the utility model;

[0021] Figure 4 This is a schematic diagram of the overall exploded structure of the diverter tube of the utility model;

[0022] Figure 5This is a schematic diagram of the separation structure of the honeycomb panel and the storage cylinder of the utility model;

[0023] Figure 6 It is a structural schematic diagram of the card component of the utility model.

[0024] In the figure: 1. mounting bracket; 2. sealing cylinder; 21. closing block; 22. igniter; 23. first spacer ring; 24. second spacer ring; 25. bursting membrane; 3. gas treatment mechanism; 31. closing ring; 311. connecting leg No. 1; 312. partition; 313. honeycomb hole; 314. connecting leg No. 2; 315. edge filter plate; 316. aluminum alloy mesh cylinder; 317. sponge filter cylinder; 32. diverter cylinder; 33. sleeve ring; 331. conductive wire; 332. clamp; 333. splicing piece; 334. external wire; 34. copper tube; 35. honeycomb plate; 36. storage cylinder; 361. graphite plate; 362. refrigeration plate; 363. heat exchange fin; 364. groove; 365. patch temperature sensor; 37. receiving cylinder; 38. flange output pipe. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] like Figure 1-Figure 5 As shown, the utility model provides a technical solution: a passenger seat airbag gas generator, including a mounting bracket 1, a sealing cylinder 2 is fixedly mounted on the front of the mounting bracket 1, a gas processing mechanism 3 is arranged on the sealing cylinder 2, the gas processing mechanism 3 includes a shunt cylinder 32, a copper tube 34 is fixedly connected to the right side of the shunt cylinder 32, a honeycomb panel 35 is fixedly sleeved on the outer wall of the copper tube 34 near the right end, a storage cylinder 36 is fixedly connected to the left side of the honeycomb panel 35, the left side of the storage cylinder 36 is fixedly connected to the right side of the shunt cylinder 32, the inner cavity of the storage cylinder 36 is filled with coolant, and the inner wall of the storage cylinder 36 is fixedly sleeved with a honeycomb panel 35. A graphite plate 361 is fixedly installed, and a cooling fin 362 is fixedly installed on the side of the two graphite plates 361 that are away from each other, and a heat exchange fin 363 is fixedly connected to the side of the two graphite plates 361 that are close to each other. The cold end of the cooling fin 362 is attached to the graphite plate 361, and the cooling fin 362 is controlled to work. The heat transfer between the graphite plate 361 and the heat exchange fin 363 can quickly cool the coolant inside the storage cylinder 36, and the gas produced in the sealing cylinder 2 will flow through the inner cavity of the copper tube 34. In the process, the coolant will exchange heat with the gas to fully reduce the temperature of the gas to ensure the safety of the passengers.

[0027] As an implementation method in this embodiment, Figure 4 , Figure 5 , Figure 6As shown, a groove 364 is provided on the outer surface of the storage cylinder 36, and a patch temperature sensor 365 is fixedly installed on the inner wall of the groove 364. The refrigeration sheet 362 and the patch temperature sensor 365 are both connected to the external controller by electrical signals. The right side of the honeycomb plate 35 is fixedly connected to the receiving cylinder 37, and the right side of the receiving cylinder 37 is fixedly connected to the flange output pipe 38. A sleeve ring 33 is fixedly sleeved on the outer wall of the shunt cylinder 32, and a conductive wire 331 is fixedly connected to the outer wall of the sleeve ring 33. The end of the conductive wire 331 away from the sleeve ring 33 is fixedly connected to a clamp 332, and a splicing piece 333 is welded on the outer wall of the clamp 332. An external wire 334 is detachably connected to the inner wall of the clamp 332. The patch temperature sensor 365 is an existing structural model that can be selected as WRNT-CY-08. The chip temperature sensor 365 can monitor the temperature of the coolant inside the storage tube 36. After reaching the preset value, the refrigeration plate 362 is controlled by the external controller to suspend work to save electricity. The external wire 334 is connected to the static electricity release point of the car shark fin. The static electricity on this structure can be transferred to the external wire 334 through the sleeve ring 33 and the conductive wire 331, and then released from the shark fin to increase safety. Through the cooperation of the bolts, the splicing parts 333 and the clamps 332, the end of the conductive wire 331 is detachably connected to the outer wall of the external wire 334, and the airbag input pipe is connected to the flange output pipe 38, so that the gas can rush into the airbag.

[0028] As an implementation method in this embodiment, Figure 1 , Figure 2 and Figure 3As shown, the gas processing mechanism 3 also includes a closed ring 31, which is fixedly mounted on the right side of the mounting bracket 1, and a diverter tube 32 is fixedly connected to the right side of the closed ring 31. The right side of the closed ring 31 is fixedly connected to an aluminum alloy mesh tube 316, and the right side of the closed ring 31 is fixedly connected to a sponge filter tube 317 located in the inner cavity of the aluminum alloy mesh tube 316. The left side of the closed ring 31 is fixedly connected to a No. 1 connecting leg 311, and the left end of the No. 1 connecting leg 311 is fixedly connected to a partition 312, and the partition 312 is fixedly connected to the left side of the closed ring 31. The outer wall is fixedly connected to the inner wall of the sealing cylinder 2, a honeycomb hole 313 is opened on the side of the partition 312, a second connecting leg 314 is fixedly connected to the left side of the partition 312, and an edge filter plate 315 is fixedly connected to the left end of the second connecting leg 314. A closing block 21 is fixedly installed on the left side of the inner wall of the sealing cylinder 2, and an igniter 22 is fixedly connected to the right side of the closing block 21. A first spacer ring 23 is fixedly installed on the inner wall of the sealing cylinder 2, and a second spacer ring 23 located on the right side of the first spacer ring 23 is fixedly installed on the inner wall of the sealing cylinder 2. The inner walls of the first and second spacer rings 23 and 24 are fixedly connected with a bursting membrane 25. The inner cavity of the sealing cylinder 2 is filled with an inflator located between the first and second spacer rings 23 and 24. There is a certain gap between the edge filter plate 315 and the inner wall of the sealing cylinder 2, which can complete the primary filtration of the gas. The cooperation of the partition plate 312 and the honeycomb hole 313 can complete the secondary filtration of the gas. The design of the sponge filter cartridge 317 can complete the tertiary filtration of the gas to avoid the problem that the impurities in the gas will easily cause damage to the airbag. The design of the aluminum alloy mesh cylinder 316 can support the sponge filter cartridge 317 to avoid the problem that high-pressure gas will break through the sponge filter cartridge 317, thereby ensuring the filtering performance of the sponge filter cartridge 317. The igniter 22 is controlled by the electronic control unit of the on-board computer. The control of the igniter 22 can break through the left bursting membrane 25 and ignite the inflator. The inflator will generate gas, and the air pressure will push the right bursting membrane 25 to be damaged, thereby releasing the gas.

[0029] Working principle: The refrigeration plate 362 is controlled to work intermittently to cool the coolant inside the storage cylinder 36. The igniter 22 is controlled by the electronic control unit of the vehicle computer. When a collision occurs, the igniter 22 is controlled to work, breaking through the left bursting membrane 25 to ignite the inflator, and the inflator then generates gas. The air pressure pushes the right bursting membrane 25 to be damaged, thereby releasing the gas. After the gas is filtered three times by the components connected by the closed ring 31, the gas will flow through the copper tube 34 and be cooled by the coolant. The airbag input pipe is pre-connected with the flange output pipe 38 to allow the gas to rush into the interior of the airbag.

[0030] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A passenger seat airbag gas generator, comprising a mounting bracket (1), characterized in that: A sealing cylinder (2) is fixedly mounted on the front of the mounting bracket (1), a gas processing mechanism (3) is arranged on the sealing cylinder (2), the gas processing mechanism (3) comprises a flow dividing cylinder (32), a copper tube (34) is fixedly connected to the right side of the flow dividing cylinder (32), a honeycomb panel (35) is fixedly sleeved on the outer wall of the copper tube (34) close to the right end, a storage cylinder (36) is fixedly connected to the left side of the honeycomb panel (35), the left side of the storage cylinder (36) is fixedly connected to the right side of the flow dividing cylinder (32), the inner cavity of the storage cylinder (36) is filled with cooling liquid, a graphite plate (361) is fixedly mounted on the inner wall of the storage cylinder (36), a cooling plate (362) is fixedly mounted on the side of the two graphite plates (361) away from each other, and a heat exchange fin (363) is fixedly connected to the side of the two graphite plates (361) close to each other.

2. The passenger seat airbag gas generator according to claim 1, characterized in that: A groove (364) is provided on the outer surface of the storage cylinder (36), a patch-type temperature sensor (365) is fixedly mounted on the inner wall of the groove (364), and the cooling plate (362) and the patch-type temperature sensor (365) are both electrically connected to an external controller.

3. The passenger seat airbag gas generator according to claim 1, characterized in that: The right side of the honeycomb plate (35) is fixedly connected to a receiving tube (37), and the right side of the receiving tube (37) is fixedly connected to a flange output pipe (38).

4. The passenger seat airbag gas generator according to claim 1, characterized in that: A sleeve ring (33) is fixedly sleeved on the outer wall of the diverter tube (32), a conductive wire (331) is fixedly connected to the outer wall of the sleeve ring (33), and a clamp (332) is fixedly connected to one end of the conductive wire (331) away from the sleeve ring (33).

5. The front passenger airbag gas generator according to claim 4, characterized in that: A splicing piece (333) is welded on the outer wall of the clamp (332), and an external wire (334) is detachably connected to the inner wall of the clamp (332).

6. The passenger seat airbag gas generator according to claim 1, characterized in that: The gas processing mechanism (3) further comprises a closed ring (31), the closed ring (31) being fixedly mounted on the right side of the mounting bracket (1), the flow dividing cylinder (32) being fixedly connected to the right side of the closed ring (31), the right side of the closed ring (31) being fixedly connected to an aluminum alloy mesh cylinder (316), and the right side of the closed ring (31) being fixedly connected to a sponge filter cylinder (317) located in the inner cavity of the aluminum alloy mesh cylinder (316).

7. The front passenger airbag gas generator according to claim 6, characterized in that: A first connecting leg (311) is fixedly connected to the left side of the closed ring (31), a partition (312) is fixedly connected to the left end of the first connecting leg (311), an outer wall of the partition (312) is fixedly connected to the inner wall of the sealing cylinder (2), and a honeycomb hole (313) is provided on the side of the partition (312).

8. The passenger seat airbag gas generator according to claim 7, characterized in that: A second connecting leg (314) is fixedly connected to the left side of the partition (312), and an edge filter plate (315) is fixedly connected to the left end of the second connecting leg (314).

9. The passenger seat airbag gas generator according to claim 1, characterized in that: A closing block (21) is fixedly mounted on the left side of the inner wall of the sealing cylinder (2); an igniter (22) is fixedly connected to the right side of the closing block (21); a first spacer ring (23) is fixedly mounted on the inner wall of the sealing cylinder (2); and a second spacer ring (24) located on the right side of the first spacer ring (23) is fixedly mounted on the inner wall of the sealing cylinder (2).

10. The passenger seat airbag gas generator according to claim 9, characterized in that: The inner walls of the first spacer ring (23) and the second spacer ring (24) are both fixedly connected with burst membranes (25), and the inner cavity of the sealing cylinder (2) is filled with an inflating agent located between the first spacer ring (23) and the second spacer ring (24).

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