CN213167980U - Novel integral type gas generator moulds plastics - Google Patents
Novel integral type gas generator moulds plastics Download PDFInfo
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- CN213167980U CN213167980U CN202021682856.9U CN202021682856U CN213167980U CN 213167980 U CN213167980 U CN 213167980U CN 202021682856 U CN202021682856 U CN 202021682856U CN 213167980 U CN213167980 U CN 213167980U
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- lower cover
- upper cover
- medicine
- gas generator
- hole
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- 239000004033 plastic Substances 0.000 title claims abstract description 8
- 229920003023 plastic Polymers 0.000 title claims abstract description 8
- 239000003814 drug Substances 0.000 claims abstract description 67
- 239000012528 membrane Substances 0.000 claims abstract description 15
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 238000001746 injection moulding Methods 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 6
- 239000003380 propellant Substances 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 3
- 239000002991 molded plastic Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 125000006850 spacer group Chemical group 0.000 abstract 6
- 238000010030 laminating Methods 0.000 abstract 1
- 230000000903 blocking effect Effects 0.000 description 17
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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Abstract
The utility model discloses a novel integral type gas generator moulds plastics, including upper cover and lower cover, upper cover and lower cover fixed connection just constitute a medicine chamber, be equipped with the gas production medicine in the medicine chamber, spacer sleeve and filter, the gas production medicine is located the spacer sleeve, the laminating of spacer sleeve top and upper cover open end, the filter is located the upper cover bottom and with spacer sleeve bottom joint, be equipped with a plurality of gas vent and rupture membrane on the upper cover lateral wall, the rupture membrane is located the medicine intracavity and covers a plurality of gas vent completely, the upper cover bottom is equipped with the medicine cup subassembly, the medicine cup subassembly is located the spacer sleeve and runs through spacer sleeve bottom and upper cover fixed connection, the lower cover edge is equipped with the flange, flange and lower cover fixed connection, the lower cover center is equipped with the recess, the recess bottom is equipped with through-hole one, be equipped with the ignition assembly in the through-hole one, the ignition assembly is through moulding plastics and lower cover fixed connection. The utility model has the advantages that: the integral strength and the air tightness of the lower cover are improved.
Description
Technical Field
The utility model belongs to the technical field of the relevant technique of gas generator and specifically relates to indicate a novel integral type gas generator moulds plastics.
Background
The gas generator is mainly used in an air bag in an automobile safety system, and when a human body is impacted, the gas generator generates gas at a moment and fills the air bag so as to protect the body of a driver and prevent the body from being seriously impacted.
In the prior art, the lower cover and the ignition assembly on the gas generator need to be machined respectively and then assembled, so that the lower cover part is poor in sealing performance, and meanwhile, the overall strength is low.
SUMMERY OF THE UTILITY MODEL
The utility model relates to an overcome among the prior art poor and the lower not enough of bulk strength of leakproofness of lower lid, provide a novel integral type gas generator of moulding plastics that lid leakproofness is good and bulk strength is big down.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a novel injection molding integrated gas generator comprises an upper cover and a lower cover, wherein the upper cover and the lower cover are fixedly connected and form a medicine cavity, a gas producing medicine, a baffle sleeve and a filter are arranged in the medicine cavity, the gas producing medicine is positioned in the baffle sleeve, the outer side of the top of the baffle sleeve is tightly attached to the open end of the upper cover, the filter is installed at the bottom of the upper cover and is connected with the bottom of the baffle sleeve in a buckling manner, a plurality of exhaust ports and a rupture membrane are arranged on the side wall of the upper cover, the rupture membrane is positioned in the medicine cavity and completely covers the plurality of exhaust ports, a medicine cup component is arranged at the center of the bottom of the upper cover, the medicine cup component is positioned in the baffle sleeve and penetrates through the bottom of the baffle sleeve to be fixedly connected with the upper cover, a flange is arranged at the edge of the lower cover, the flange is fixedly connected with the lower cover, a groove is arranged at the center of the lower cover, a first through, the ignition assembly is fixedly connected with the lower cover through injection molding, one end of the ignition assembly is located at the opening end of the groove, and the other end of the ignition assembly is located in the medicine cup component.
The upper cover and the lower cover are fixedly connected to form a medicine cavity, a gas producing medicine is arranged in the medicine cavity, the gas producing medicine is located in the baffle sleeve, the top outer side of the baffle sleeve is tightly attached to the opening end of the upper cover, the filter is installed at the bottom of the upper cover and is connected with a bottom buckle of the baffle sleeve, a plurality of air vents and a rupture membrane are arranged on the side wall of the upper cover, the rupture membrane is located in the medicine cavity and completely covers the plurality of air vents, a medicine cup component is arranged at the center of the bottom of the upper cover, the medicine cup component is located in the baffle sleeve and penetrates through the bottom of the baffle sleeve and is fixedly connected with the upper cover, a flange is arranged at the edge of the lower cover, the flange is fixedly connected with the lower cover, a groove is arranged at the center of the lower cover, a first through hole is formed in the bottom of the groove, an ignition assembly is arranged in the first through hole, the ignition assembly is fixedly connected with the lower cover through injection molding. The gas production medicine is burnt to release high-temperature gas and flame, the pressure in the medicine cavity rises rapidly, and the rupture membrane is positioned in the medicine cavity and completely covers a plurality of exhaust ports, so that the rupture membrane is ruptured when the internal pressure reaches a certain value, and is exhausted to the air bag through the exhaust ports to be filled with the safety air bag, thereby protecting the safety of a driver; this scheme is integrated as an organic whole through moulding plastics with flange, lower cover and ignition assembly, does not need the outer machine processing of volume, has reached the good and big purpose of bulk strength of lower cover part leakproofness.
Preferably, the ignition assembly comprises a short circuit clamp and an ignition tube, the short circuit clamp is located in the groove, the ignition tube comprises a tube seat and two electrodes, one end of each electrode is located in the short circuit clamp, the other end of each electrode penetrates through the first through hole to be fixedly connected with the tube seat, the tube seat is located in the medicine cup assembly, and the short circuit clamp and the tube seat are both fixedly connected with the lower cover through injection molding. The short circuit clamp and the tube seat are combined into a whole through injection molding, the number of parts is reduced, the mode is low in cost, fast and convenient to produce, the performance of the ignition tube is not affected, and the heat insulation function is achieved.
Preferably, the center of the lower cover is provided with an injection molding part, the bottom of the groove is provided with a plurality of first arc-shaped grooves, the tube seat is provided with a plurality of first convex hulls, the injection molding part is provided with a plurality of second convex hulls matched with the first arc-shaped grooves and a plurality of second arc-shaped grooves matched with the first convex hulls, one end of the injection molding part is positioned in the opening end of the groove, the other end of the injection molding part is provided with a limiting lug, the limiting lug is positioned in the medicine cup assembly, the injection molding part is sequentially provided with an arc-shaped slot, a sealing groove matched with the short circuit clamp, a through hole II corresponding to the through hole I and a mounting groove matched with the tube seat from one end to the other end positioned in the opening end of the groove, the mounting groove is positioned in the limiting lug, the arc-shaped slot, the sealing groove, the through hole II. The anti-rotation structure matched with the first arc-shaped groove and the second convex hull and the second arc-shaped groove and the first convex hull ensures that the air tightness and the strength performance of the generator cannot be influenced by the rotation of the injection molding body; the lower cover is arranged in the medicine cup assembly through a limiting lug on the injection molding piece, so that the integral strength of the lower cover is improved; the arc-shaped slot is convenient for an external plug to be plugged and conducts a circuit with the pin; the short circuit clamp and the tube seat are both connected with the lower cover through injection molding, and the air tightness of the generator is improved.
Preferably, the medicine cup assembly comprises a medicine cup, a flanging matched with the limiting bump is arranged at the opening end of the medicine cup, the pipe seat is positioned in the opening end of the medicine cup, the bottom of the medicine cup is fixedly connected with the upper cover through resistance spot welding, a spring and a propellant are arranged in the medicine cup, one end of the spring is in contact with the flanging, and the other end of the spring is spirally and uniformly distributed and is in contact with the propellant. The medicine cup is closely matched with the injection molding piece on the lower cover through the flanging, and the stability of the whole structure is favorably improved.
Preferably, the top of the blocking sleeve is provided with an opening, the diameter of the blocking sleeve is larger than that of the bottom of the blocking sleeve, the bottom of the blocking sleeve is provided with a third through hole matched with the medicine cup, the side face of the blocking sleeve is provided with a transition inclined plane, and the plurality of exhaust ports are all located at the bottom of the blocking sleeve. The transition inclined plane is beneficial to the press mounting of the blocking sleeve, so that the top end of the blocking sleeve is tightly pressed with the opening end of the upper cover; meanwhile, the diameter of the bottom of the blocking sleeve where the exhaust port is located is smaller than that of the top of the blocking sleeve, so that the air pressure in the explosive cavity after the gas producing explosive and the propellant are combusted can be favorable for breaking the rupture membrane and discharging the rupture membrane from the exhaust port, and the design is reasonable.
Preferably, the bottom of the lower cover is provided with a buffer cushion, and the buffer cushion is positioned in the medicine cavity and between the opening of the blocking sleeve and the injection molding piece. The cushion can effectively cushion internal pressure, prevents that the lower cover from exploding or making its and upper cover separation, can make the pressure that inside sharply rises discharge from the gas vent more high-efficiently simultaneously, improves air bag's inflation volume to more be favorable to human safety protection.
Preferably, the upper cover is fixedly connected with the inner side wall of the lower cover by laser welding. The lower cover is reversely buckled with the upper cover, which is beneficial to improving the air tightness.
Preferably, the rupture disk is connected to the upper cover by glue.
The utility model has the advantages that: the cost is low, the production is rapid and convenient, and the heat insulation function is realized; the integral strength and the air tightness of the lower cover are improved; the stability of the whole structure is improved; the design is reasonable; is more beneficial to the safety protection of human body.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. the gas production device comprises an upper cover, a lower cover, a gas production medicine, a blocking sleeve, a filter, a rupture membrane, a medicine cup component, a flange, a groove, a through hole I, an ignition assembly, a short circuit clamp, a transition inclined plane, a pipe seat 14, a pipe seat 15, an electrode, an injection molding piece 16, an arc groove I, an arc groove II, a limiting bump, a circular arc slot 20, a sealing groove 21, a through hole II, a through hole 23, an installation groove 24, a medicine cup 25, a flanging, a spring 26, a transfer powder 27, an opening 28, a through hole III and a cushion pad 30.
Detailed Description
The invention is further described with reference to the accompanying drawings and the detailed description.
In the embodiment shown in fig. 1, a novel injection-molded integrated gas generator comprises an upper cover 1 and a lower cover 2, wherein the upper cover 1 and the lower cover 2 are fixedly connected to form a medicine cavity, a gas producing medicine 3, a baffle sleeve 4 and a filter 5 are arranged in the medicine cavity, the gas producing medicine 3 is positioned in the baffle sleeve 4, the outer side of the top of the baffle sleeve 4 is tightly attached to the open end of the upper cover 1, the filter 5 is arranged at the bottom of the upper cover 1 and is connected with the bottom of the baffle sleeve 4 in a buckling manner, the side wall of the upper cover 1 is provided with a plurality of exhaust ports and a rupture membrane 6, the rupture membrane 6 is positioned in the medicine cavity and completely covers the plurality of exhaust ports, the center of the bottom of the upper cover 1 is provided with a medicine cup assembly 7, the medicine cup assembly 7 is positioned in the baffle sleeve 4 and penetrates through the bottom of the baffle sleeve 4 to be fixedly connected with the upper cover 1, the edge of the lower cover 2 is provided with a flange 8, the flange 8 is fixedly connected with the lower cover 2, an ignition assembly 11 is arranged in the first through hole 10, the ignition assembly 11 is fixedly connected with the lower cover 2 through injection molding, one end of the ignition assembly 11 is located at the opening end of the groove 9, and the other end of the ignition assembly 11 is located in the medicine cup component 7.
The ignition assembly 11 comprises a short circuit clamp 12 and an ignition tube, the short circuit clamp 12 is located in the groove 9, the ignition tube comprises a tube seat 14 and two electrodes 15, one end of each electrode 15 is located in the short circuit clamp 12, the other end of each electrode 15 penetrates through the through hole I10 to be fixedly connected with the tube seat 14, the tube seat 14 is located in the medicine cup assembly 7, and the short circuit clamp 12 and the tube seat 14 are both fixedly connected with the lower cover 2 through injection molding.
The center of the lower cover 2 is provided with an injection molding piece 16, the bottom of the groove 9 is provided with a plurality of arc-shaped grooves I17, the tube seat 14 is provided with a plurality of convex hulls I, the injection molding piece 16 is provided with a plurality of convex hulls II matched with the arc-shaped grooves I17 and a plurality of arc-shaped grooves II matched with the convex hulls I18, one end of the injection molding piece 16 is positioned in the opening end of the groove 9, the other end of the injection molding piece 16 is provided with a limiting lug 19, the limiting lug 19 is positioned in the medicine cup component 7, the injection molding piece 16 is sequentially provided with a circular arc-shaped slot 20, a sealing groove 21 matched with the short circuit clamp 12, a through hole II 22 corresponding to the through hole I10 and a mounting groove 23 matched with the tube seat 14 from one end positioned in the opening end of the groove 9 to the other end, the mounting groove 23 is positioned in the limiting lug 19, the circular arc-shaped slot 20, the sealing groove 21, the, the electrode 15 is located in the second through hole 22.
The medicine cup assembly 7 comprises a medicine cup 24, a flange 25 matched with the limit bump 19 is arranged at the opening end of the medicine cup 24, the tube seat 14 is positioned in the opening end of the medicine cup 24, the bottom of the medicine cup 24 is fixedly connected with the upper cover 1 through resistance spot welding, a spring 26 and a transfer charge 27 are arranged in the medicine cup 24, one end of the spring 26 is in contact with the flange 25, and the other end of the spring 26 is in spiral uniform distribution and is in contact with the transfer charge 27.
The top of the blocking sleeve 4 is provided with an opening 28, the diameter of the opening is larger than that of the bottom of the blocking sleeve 4, the bottom of the blocking sleeve 4 is provided with a third through hole 29 matched with the medicine cup 24, the side surface of the blocking sleeve 4 is provided with a transition inclined plane 13, and a plurality of exhaust ports are all positioned at the bottom of the blocking sleeve 4. The bottom of the lower cover 2 is provided with a cushion 30, and the cushion 30 is located in the cavity between the opening 28 of the baffle 4 and the injection molded part 16. The upper cover 1 is fixedly connected with the inner side wall of the lower cover 2 through laser welding. The rupture disk 6 is connected with the upper cover 1 through glue.
The gas generator functions in such a manner that an external current is input to the ignition tube, thereby exciting the ignition tube, and flame is released from the ignition tube to ignite the transfer charge 27 and the gas generant 3. Then, the booster 27 and the gas generating agent 3 start to burn and release high-temperature gas and flame, the pressure in the agent cavity rises rapidly, when the internal pressure reaches a certain value, the rupture disk 6 is broken, and the gas is discharged to a gas bag through an exhaust port to fill the safety gas bag, thereby achieving the function of protecting a driver.
Claims (8)
1. A novel injection molding integrated gas generator is characterized by comprising an upper cover (1) and a lower cover (2), wherein the upper cover (1) and the lower cover (2) are fixedly connected and form a medicine cavity, a gas producing medicine (3), a baffle sleeve (4) and a filter (5) are arranged in the medicine cavity, the gas producing medicine (3) is positioned in the baffle sleeve (4), the outer side of the top of the baffle sleeve (4) is tightly attached to the open end of the upper cover (1), the filter (5) is installed at the bottom of the upper cover (1) and is connected with the bottom of the baffle sleeve (4) in a buckling manner, a plurality of exhaust ports and a rupture membrane (6) are arranged on the side wall of the upper cover (1), the rupture membrane (6) is positioned in the medicine cavity and completely covers a plurality of exhaust ports, a medicine cup assembly (7) is arranged at the center of the bottom of the upper cover (1), the medicine cup assembly (7) is positioned in the baffle sleeve (4) and penetrates through the bottom of the baffle sleeve (4) and is fixedly connected with the upper cover (1), the edge of lower cover (2) is equipped with flange (8), flange (8) and lower cover (2) fixed connection, the center of lower cover (2) is equipped with recess (9), the bottom of recess (9) is equipped with through-hole (10), be equipped with ignition assembly (11) in through-hole (10), ignition assembly (11) are through moulding plastics and lower cover (2) fixed connection, the one end of ignition assembly (11) is located the open end of recess (9), the other end of ignition assembly (11) is located medicine cup subassembly (7).
2. The novel injection-molded integrated gas generator as claimed in claim 1, wherein the ignition assembly (11) comprises a short-circuit clamp (12) and an ignition tube, the short-circuit clamp (12) is located in the groove (9), the ignition tube comprises a tube seat (14) and two electrodes (15), one end of each electrode (15) is located in the short-circuit clamp (12), the other end of each electrode (15) penetrates through the first through hole (10) to be fixedly connected with the tube seat (14), the tube seat (14) is located in the medicine cup assembly (7), and the short-circuit clamp (12) and the tube seat (14) are both fixedly connected with the lower cover (2) through injection molding.
3. The novel injection-molded integrated gas generator as claimed in claim 2, wherein the lower cover (2) is provided at the center with an injection-molded part (16), the bottom of the groove (9) is provided with a plurality of arc-shaped grooves I (17), the tube seat (14) is provided with a plurality of convex hulls I, the injection-molded part (16) is provided with a plurality of convex hulls II matched with the arc-shaped grooves I (17) and a plurality of arc-shaped grooves II matched with the convex hulls I (18), one end of the injection-molded part (16) is located in the open end of the groove (9), the other end of the injection-molded part (16) is provided with a limiting lug (19), the limiting lug (19) is located in the cup assembly (7), and the injection-molded part (16) is sequentially provided with an arc-shaped slot (20), a sealing groove (21) matched with the short-circuit clamp (12) from one end located in the open end of the groove (9) to the, Through-hole two (22) corresponding with through-hole one (10) and with tube socket (14) assorted mounting groove (23), mounting groove (23) are located spacing lug (19), arc slot (20), seal groove (21), through-hole two (22) and mounting groove (23) homogeneous phase intercommunication, short circuit clamp (12) and tube socket (14) are all moulded plastics through injection molding (16) and are covered (2) fixed connection down, electrode (15) are located through-hole two (22).
4. A novel injection molding integrated gas generator as claimed in claim 3, wherein the cup assembly (7) comprises a cup (24), the open end of the cup (24) is provided with a flange (25) matched with the limit bump (19), the tube seat (14) is located in the open end of the cup (24), the bottom of the cup (24) is fixedly connected with the upper cover (1) through resistance spot welding, a spring (26) and a propellant (27) are arranged in the cup (24), one end of the spring (26) is in contact with the flange (25), and the other end of the spring (26) is spirally and uniformly distributed and is in contact with the propellant (27).
5. A novel injection molding integrated gas generator as claimed in claim 4, wherein the top of the retaining sleeve (4) is provided with an opening (28) and the diameter of the retaining sleeve is larger than that of the bottom of the retaining sleeve, the bottom of the retaining sleeve (4) is provided with a third through hole (29) matched with the medicine cup (24), the side surface of the retaining sleeve (4) is provided with a transition inclined surface (13), and a plurality of exhaust ports are all located at the bottom of the retaining sleeve (4).
6. A novel injection-molded integrated gas generator as claimed in claim 5, wherein the bottom of the lower cover (2) is provided with a cushion (30), and the cushion (30) is located in the cavity and between the opening (28) of the baffle sleeve (4) and the injection-molded part (16).
7. A novel injection-molded integrated gas generator as claimed in claim 1, wherein said upper cover (1) is fixedly connected with the inner side wall of the lower cover (2) by laser welding.
8. A novel injection-molded integrated gas generator as claimed in claim 1, wherein said rupture disk (6) is connected to the upper cover (1) by glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021682856.9U CN213167980U (en) | 2020-08-13 | 2020-08-13 | Novel integral type gas generator moulds plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021682856.9U CN213167980U (en) | 2020-08-13 | 2020-08-13 | Novel integral type gas generator moulds plastics |
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| Publication Number | Publication Date |
|---|---|
| CN213167980U true CN213167980U (en) | 2021-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021682856.9U Active CN213167980U (en) | 2020-08-13 | 2020-08-13 | Novel integral type gas generator moulds plastics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213167980U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113525287A (en) * | 2021-07-02 | 2021-10-22 | 均胜汽车安全系统(湖州)有限公司 | Novel injection molding type DAB gas generator |
-
2020
- 2020-08-13 CN CN202021682856.9U patent/CN213167980U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113525287A (en) * | 2021-07-02 | 2021-10-22 | 均胜汽车安全系统(湖州)有限公司 | Novel injection molding type DAB gas generator |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Jianping Inventor after: Di Hongru Inventor after: Wang Wei Inventor before: Zhang Jianping Inventor before: Di Hongru Inventor before: Wang Wei |