CN216684373U - Ignition tube structure for gas generator - Google Patents
Ignition tube structure for gas generator Download PDFInfo
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- CN216684373U CN216684373U CN202123128836.4U CN202123128836U CN216684373U CN 216684373 U CN216684373 U CN 216684373U CN 202123128836 U CN202123128836 U CN 202123128836U CN 216684373 U CN216684373 U CN 216684373U
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Abstract
The utility model discloses an ignition tube structure for a gas generator. The ignition device comprises an ignition head, wherein one end of the ignition head is provided with a pin, the other end of the ignition head is provided with a point explosion head, a first explosive cup is installed on the ignition head, an opening of the first explosive cup is installed on the end face of the other end of the ignition head and is in sealing connection with the end face of the other end of the ignition head, the point explosion head is arranged on the inner side of the first explosive cup, a booster powder is arranged in the first explosive cup, an exhaust hole is formed in the side wall of the first explosive cup, and an exhaust hole sealing device matched with the exhaust hole is arranged on the outer side of the first explosive cup. The utility model has the beneficial effects that: the automobile ignition tube has the advantages that the automobile ignition tube has the function (namely, the detonation function) that electric energy is converted into chemical energy for burning gunpowder after the conventional ignition tube receives an ignition signal sent by the ECU when an automobile generator collides, and meanwhile, the automobile ignition tube also has the special function that the conventional ignition tube does not have, after the energy in the ignition tube is gathered and is increased to be capable of detonating gas generant, the tube shell is opened, and the detonation energy is transmitted to the outside gas generant (namely, the ignition function).
Description
Technical Field
The utility model relates to the technical field of gas generators, in particular to an ignition tube structure for a gas generator.
Background
The existing common generator ignition tube has smaller volume, less content of internal initiating explosive and less energy generated during combustion, and only plays a role of initial initiation (for igniting the booster). The common gas generator fire transfer structure is generally an independent structure and comprises a fire transfer agent cup (playing a role in assembling fire transfer agents and initially maintaining pressure), fire transfer agents (different from chemical components of initiating agents and different in action principle, the gas content generated by the common fire transfer agents is less, the heat (energy) is more), and a fire transfer agent aluminum film (playing a role in sealing the fire transfer agents and avoiding the fire transfer agents from absorbing water and being affected by the performance of the fire transfer agents).
Chinese patent grant publication no: CN110371073B, granted bulletin date 2021, 11.09.10.A pyrotechnic gas generator exhaust hole structure is disclosed, which comprises a housing having an inner cavity, a fire transfer barrel is arranged on the housing, pins for conducting current are arranged on the fire transfer barrel, the pins are connected with an electric igniter, the electric igniter is connected with a fire transfer agent in the fire transfer barrel, a fire transfer port is arranged on the fire transfer barrel, a gas producing agent is arranged in the inner cavity, a flow guide part is arranged on the housing, an exhaust hole is formed in the middle of the flow guide part, a flow guide notch is arranged at one end of the flow guide part far away from the fire transfer barrel, a slow flow shell is arranged on the outer wall of the housing around the exhaust hole, a slow flow shaft is rotatably connected in the slow flow shell, a slow flow plate is arranged on the slow flow shaft, a slow flow groove is arranged on the slow flow shaft corresponding to the slow flow plate, an accommodating groove is arranged below the slow flow plate, two positioning blocks are correspondingly arranged in the accommodating groove, and the two positioning blocks are connected through a tight spring, the bottom in unhurried current board is provided with the guiding hole with the holding tank intercommunication, corresponds the guiding hole on the bottom surface in unhurried current groove and is provided with and be used for with locating piece matched with guide block, corresponds the locating piece on the both sides wall in unhurried current groove and is provided with the constant head tank, and the one end of keeping away from the shell of unhurried current shell is provided with the gas outlet, is provided with first spacer on the biography fire mouth, and first spacer is the aluminium foil. The patent is characterized in that the electric ignition tube only has an initiation function, three parts such as a fire transfer explosive cup, fire transfer powder, an aluminum film and the like are added for ensuring the fire transfer function, so that the product cost is improved, and along with the increase of the three parts, process assembly steps corresponding to the three parts are introduced to improve the process cost; meanwhile, because the film and the film carrier are made of different materials, different materials have different shrinkage deformations at different temperatures, and the film sealing performance is increasingly poor after high and low temperature sudden changes.
In view of the foregoing, there is a need for an igniter tube structure for a gas generator that has both initiation and transfer functions.
SUMMERY OF THE UTILITY MODEL
The utility model provides an ignition tube structure for a gas generator, which has the functions of initiation and fire transmission simultaneously, and aims to overcome the defect that the ignition tube in the prior art only has the functions of initiation and no fire transmission.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides an ignition tube structure that gas generator used, includes the ignition head, the one end of ignition head is equipped with the stitch, the other end of ignition head is equipped with a bit and explodes the head, install medicine cup one on the ignition head, the opening of medicine cup one is installed on the terminal surface of the ignition head other end and both sealing connection, the inboard of medicine cup one is arranged in to the bit explosion head, the inside of medicine cup one is equipped with the transfer powder, be equipped with the exhaust hole on the lateral wall of medicine cup one, the outside of medicine cup one be equipped with exhaust hole assorted exhaust hole sealing device.
After pins on the ignition tube receive the initiation current of the ECU, the igniting head ignites the transfer powder in the first explosive cup to increase the pressure and the temperature in the first explosive cup, the energy is transferred to the exhaust hole sealing device, the exhaust hole sealing device is broken down, the energy of the transfer powder and hot particles after the transfer powder is combusted are sprayed into an outer space, and the outer gas generating explosive is ignited. According to the utility model, the ignition head and the explosive cup I are integrally designed to form a special ignition tube, so that the special ignition tube not only has the function of converting electric energy into chemical energy for burning gunpowder after receiving an ignition signal sent by an ECU when a conventional ignition tube collides with an automobile generator; meanwhile, the ignition tube has a special function which is not available in a conventional ignition tube, and has the functions of gathering energy in the ignition tube, opening the tube shell after the energy is increased to be capable of igniting gas-producing explosive of the generator, and transmitting the initiation energy to the gas-producing explosive on the outer side. The special igniter tube well replaces the functions of an igniter tube, a transfer charge cup and a transfer charge film in the traditional generator, and meanwhile, the original processes of transfer charge assembly, transfer charge cup assembly, transfer charge film sticking and the like are omitted, so that the process steps are relatively simpler, and the product cost and the process cost are saved.
Preferably, the ignition head is further provided with a second explosive cup, an opening of the second explosive cup is arranged on the end face of the other end of the ignition head and is in sealed connection with the end face of the other end of the ignition head, the second explosive cup is arranged on the inner side of the first explosive cup, the transfer powder is arranged on the outer portion of the second explosive cup, the inner portion of the second explosive cup is provided with the initiating explosive, and the side wall of the second explosive cup is provided with the weakening groove. After pins on the igniter receive the ECU initiation current, the highly sensitive initiating explosive is ignited by the igniter, the energy of gunpowder in the second explosive cup is increased, the weakening grooves in the side walls of the second explosive cup are opened, the energy is transmitted to the igniting powder in the first explosive cup, and then the igniting powder is ignited.
Preferably, the structure of the weakening groove is a structure of a groove carved in a shape of a Chinese character 'mi'. The weakening groove is relatively low in strength and easy to be broken down by energy generated by the initiating explosive, so that the energy of the initiating explosive can smoothly enter the first explosive cup to ignite the transfer charge.
Preferably, an annular mounting groove I matched with the medicine cup I and an annular mounting groove II matched with the medicine cup II are respectively formed in the end face of the other end of the ignition head, an internal thread I is arranged at an opening of the medicine cup I, an external thread I matched with the internal thread I is arranged on the inner wall of the annular mounting groove I, an internal thread II is arranged at an opening of the medicine cup II, and an external thread II matched with the internal thread II is arranged on the inner wall of the annular mounting groove II. Wherein the material of the first medicine cup and the material of the second medicine cup are both metal materials. During assembly, firstly, the second medicine cup is screwed into the second annular mounting groove through the matching of the second internal thread and the second external thread, and then the second medicine cup and the second annular mounting groove are fixed through laser welding, so that the primary explosive is sealed in the second medicine cup while the connection strength is ensured; secondly, the first explosive cup is screwed into the first annular mounting groove through the matching of the first internal thread and the first external thread, and then the first explosive cup and the first external thread are fixed through laser welding, so that the bonding strength is ensured, and meanwhile, the transfer powder is sealed in the first explosive cup. The method has the advantages of convenient operation, simple process, high positioning precision, high connection strength and good sealing property, well solves the problem that the conventional generator transfer powder is easy to absorb water to influence the performance of the generator, and improves the sealing problem of the transfer powder of the pyrotechnic generator.
Preferably, the exhaust hole sealing device comprises a sleeve, an opening of the sleeve is fixed on the end face of the other end of the ignition head and is in sealing connection with the ignition head, and the sleeve is arranged on the outer side of the first medicine cup. The sleeve is made of plastic, has relatively low strength and is easily broken down by the energy generated by the transfer powder, so that the energy of the transfer powder can be smoothly sprayed into the outer space through the exhaust hole to ignite the outer gas-producing powder.
Preferably, the sleeve and the ignition head are integrally formed by injection molding. Convenient processing and good sealing performance.
The utility model has the beneficial effects that: the ignition head and the explosive cup are integrally designed to form a special ignition tube, the special ignition tube not only has the function of converting electric energy into chemical energy for burning the explosive after receiving an ignition signal sent by an ECU (electronic control unit) when the conventional ignition tube collides with an automobile generator (namely, the initiation function), but also has the special function which is not possessed by the conventional ignition tube, and the special ignition tube has the functions of gathering the energy in the ignition tube, opening a tube shell after the energy is increased to be capable of igniting the gas-producing explosive of the generator and transmitting the initiation energy to the gas-producing explosive on the outer side (namely, the ignition function); the igniter well replaces the functions of a fire tube, a transfer charge cup and a transfer charge film in the traditional generator, and meanwhile, the original processes of transfer charge assembly, transfer charge cup assembly, transfer charge film sticking and the like are omitted, so that the process steps are relatively simpler, and the product cost and the process cost are saved; the method has the advantages of convenient operation, simple process, high positioning precision, high connection strength and good sealing performance, well solves the problem that the conventional generator transfer powder is easy to absorb water to influence the performance of the generator, and improves the sealing problem of the transfer powder of the pyrotechnic generator; convenient processing and good sealing performance.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is an enlarged view at C in FIG. 2;
fig. 4 is a cross-sectional view at B-B in fig. 1.
In the figure: 1. the ignition device comprises an ignition head, a pin 2, an ignition head 3, a explosive cup I4, a transfer charge 5, an exhaust hole 6, a explosive cup II 7, an initiating charge 8, a weakening groove 9, an annular mounting groove I10, an annular mounting groove II 11, an annular mounting groove II 12, an internal thread I13, an external thread I14, an internal thread II 15, an external thread II 16 and a sleeve.
Detailed Description
The utility model is further described with reference to the following figures and detailed description.
In the embodiment shown in fig. 1, 2, 3 and 4, an igniter tube structure for a gas generator comprises an igniter head 1, a pin 2 is arranged at one end of the igniter head 1, a detonation head 3 is arranged at the other end of the igniter head 1, a first medicine cup 4 is arranged on the igniter head 1, an opening of the first medicine cup 4 is arranged on the end face at the other end of the igniter head 1 and is in sealed connection with the first medicine cup 4, the detonation head 3 is arranged at the inner side of the first medicine cup 4, a transfer charge 5 is arranged inside the first medicine cup 4, an exhaust hole 6 is arranged on the side wall of the first medicine cup 4, and an exhaust hole sealing device matched with the exhaust hole 6 is arranged at the outer side of the first medicine cup 4.
The ignition head 1 is further provided with a second medicine cup 7, an opening of the second medicine cup 7 is arranged on the end face of the other end of the ignition head 1 and is in sealing connection with the end face, the second medicine cup 7 is arranged on the inner side of the first medicine cup 4, the transfer powder 5 is arranged on the outer portion of the second medicine cup 7, the inner portion of the second medicine cup 7 is provided with the initiating explosive 8, and the side wall of the second medicine cup 7 is provided with a weakening groove 9.
The structure of the weakening groove 9 is a meter-shaped groove structure.
The end face of the other end of the ignition head 1 is provided with a first annular mounting groove 10 matched with the first medicine cup 4 and a second annular mounting groove 11 matched with the second medicine cup 7 respectively, an internal thread I12 is arranged at an opening of the first medicine cup 4, a first external thread 13 matched with the internal thread I12 is arranged on the inner wall of the first annular mounting groove 10, a second internal thread 14 is arranged at an opening of the second medicine cup 7, and a second external thread 15 matched with the second internal thread 14 is arranged on the inner wall of the second annular mounting groove 11.
The exhaust hole sealing device comprises a sleeve 16, an opening of the sleeve 16 is fixed on the end face of the other end of the ignition head 1 and is in sealing connection with the end face, and the sleeve 16 is arranged on the outer side of the first medicine cup 4.
The sleeve 16 and the ignition head 1 are integrally formed by injection molding.
During processing, firstly, the second explosive cup 7 is screwed into the second annular mounting groove 11 through the matching of the second internal thread 14 and the second external thread 15, and then the second explosive cup and the second annular mounting groove are fixed through laser welding, so that the initiating explosive 8 is sealed in the second explosive cup 7 while the connection strength is ensured; secondly, screwing the first explosive cup 4 into the first annular mounting groove 10 through the matching of the first internal thread 12 and the first external thread 13, and then fixing the first explosive cup 4 and the first external thread by laser welding to ensure the connection strength and seal the transfer powder 5 in the first explosive cup 4; finally, the sleeve 16 is formed on the ignition head 1 and located outside the medicine cup I4.
Claims (6)
1. The utility model provides an ignition tube structure that gas generator used, characterized by, includes ignition head (1), the one end of ignition head (1) is equipped with stitch (2), the other end of ignition head (1) is equipped with some and explodes head (3), install first (4) of medicine cup on ignition head (1), the opening of first (4) of medicine cup is installed on the terminal surface of ignition head (1) other end and both sealing connection, the inboard of first (4) of medicine cup is arranged in first (3) of point explosion, the inside of first (4) of medicine cup is equipped with transfer powder (5), be equipped with exhaust hole (6) on the lateral wall of first (4) of medicine cup, the outside of first (4) of medicine cup be equipped with exhaust hole sealing device with exhaust hole (6) assorted.
2. The igniter tube structure for the gas generator as claimed in claim 1, wherein a second charge cup (7) is further mounted on the igniter head (1), an opening of the second charge cup (7) is mounted on an end face of the other end of the igniter head (1) and is hermetically connected with the end face, the second charge cup (7) is disposed inside the first charge cup (4), the transfer charge (5) is disposed outside the second charge cup (7), an initiating charge (8) is disposed inside the second charge cup (7), and a weakening groove (9) is disposed on a side wall of the second charge cup (7).
3. The squib structure for a gas generator according to claim 2, wherein the weakening groove (9) has a structure of a groove engraved in a shape of a Chinese character mi.
4. The ignition tube structure for the gas generator as claimed in claim 2, wherein the end face of the other end of the ignition head (1) is respectively provided with a first annular mounting groove (10) matched with the first medicine cup (4) and a second annular mounting groove (11) matched with the second medicine cup (7), the opening of the first medicine cup (4) is provided with a first internal thread (12), the inner wall of the first annular mounting groove (10) is provided with a first external thread (13) matched with the first internal thread (12), the opening of the second medicine cup (7) is provided with a second internal thread (14), and the inner wall of the second annular mounting groove (11) is provided with a second external thread (15) matched with the second internal thread (14).
5. The ignition tube structure for the gas generator as claimed in claim 1, wherein the exhaust hole sealing means comprises a sleeve (16), the opening of the sleeve (16) is fixed on the end face of the other end of the ignition head (1) and is connected with the end face in a sealing manner, and the sleeve (16) is arranged outside the first medicine cup (4).
6. The squib structure for a gas generator according to claim 5, wherein said sleeve (16) and said ignition head (1) are integrally injection-molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123128836.4U CN216684373U (en) | 2021-12-14 | 2021-12-14 | Ignition tube structure for gas generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123128836.4U CN216684373U (en) | 2021-12-14 | 2021-12-14 | Ignition tube structure for gas generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216684373U true CN216684373U (en) | 2022-06-07 |
Family
ID=81838145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123128836.4U Active CN216684373U (en) | 2021-12-14 | 2021-12-14 | Ignition tube structure for gas generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216684373U (en) |
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2021
- 2021-12-14 CN CN202123128836.4U patent/CN216684373U/en active Active
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