CN107036930B - Performance test device for gas generating medicine in safety airbag - Google Patents
Performance test device for gas generating medicine in safety airbag Download PDFInfo
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- CN107036930B CN107036930B CN201710317035.1A CN201710317035A CN107036930B CN 107036930 B CN107036930 B CN 107036930B CN 201710317035 A CN201710317035 A CN 201710317035A CN 107036930 B CN107036930 B CN 107036930B
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- igniter
- gas generating
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- accommodating part
- gland
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/14—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference
- G01N7/16—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference by heating the material
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Air Bags (AREA)
Abstract
The invention discloses a performance testing device of a gas generating agent for an air bag, which belongs to the technical field of passive safety of automobiles, and comprises a gas generating agent accommodating part, bottom end covers and an igniter gland which are connected with two ends of the gas generating agent accommodating part in a sealing manner, and a sensor connecting part communicated with the inside of the gas generating agent accommodating part; an igniter is arranged in the igniter gland; the bottom end cover is combined with the gas generating medicine accommodating part through a sealing piece and is connected with the sealing surface in a sealing way; the igniter gland is combined with the gas generating medicine accommodating part through the sealing piece and is in sealing connection with the sealing surface. The sealing is performed in a pressing mode, the pressure relief time is short, the assembly is convenient, and the safety coefficient is high.
Description
Technical Field
The invention relates to the technical field of passive safety of automobiles, in particular to a performance testing device of an air generating medicine for an air bag.
Background
The gas generating medicine is a medicine which is placed in an air bag of an automobile at ordinary times, and can be gasified rapidly after being triggered by conditions such as collision and the like to generate a large amount of gas, so that the air bag can be expanded rapidly to play a role in protecting the personal safety of drivers and passengers.
The gas generating medicine is not generally used as an independent product to flow in the market and industry, so that no special technical index and general requirements are provided for standardizing the performance of the gas generating medicine. Manufacturers generally adopt a self-production and self-sales mode, and in general, gas generator manufacturers can produce corresponding gas generating medicines in a matched mode;
the gas generating agent is usually triggered in a closed container to gasify the gas generating agent, and the change data of pressure intensity along with time is measured in real time to form a curve for evaluating the performance of the gas generating agent, and the close explosion tank for testing is usually made of gun steel material matched with a thread sealing structure, so that the gas generating agent is high in price, large in purchasing difficulty, heavy and poor in operability; the thread structure is unfavorable for pressure relief, so that the pressure relief time is long, the operation is complex, and the safety coefficient is low.
Disclosure of Invention
The invention provides a performance testing device for an air generating drug for an air bag, which is a general testing device for testing the performance of the air generating drug, adopts a pressing mode to seal, and has the advantages of short pressure release time, convenient assembly and high safety coefficient.
In order to achieve the above purpose, the invention provides a performance testing device of a gas generating agent for an air bag, which comprises a gas generating agent accommodating part, bottom end covers and an igniter gland which are connected with two ends of the gas generating agent accommodating part in a sealing way, and a sensor connecting part communicated with the inside of the gas generating agent accommodating part;
an igniter is arranged in the igniter gland;
the bottom end cover is combined with the gas generating medicine accommodating part through a sealing piece and is connected with the sealing surface in a sealing way;
the igniter gland is combined with the gas generating medicine accommodating part through the sealing piece and is in sealing connection with the sealing surface.
The performance testing device provided by the invention adopts a direct pressing mode for sealing, and the two materials are pressed together on the sealing surface after being pressed to provide the binding force required by sealing, so that the performance testing device is quick and convenient and safe in pressure relief.
As a preferable mode of the above technical solution, the gas generating medicine accommodating portion is a cylindrical container, and a cavity for accommodating the gas generating medicine is provided inside the container.
Compared with the prior art, the cavity is smaller in volume, and accurate measurement of data can be realized without filling more gas generating medicines.
As the optimization of the technical scheme, the side wall of the gas generating medicine accommodating part is provided with a sensor installation plane, the sensor installation plane is provided with a screw hole, and the sensor connecting part is connected to the sensor installation plane through the screw hole.
As the optimization of the technical scheme, the surface, connected with the gas generating medicine containing part, of the bottom end cover is provided with a cavity limiting part, and the outer contour of the cavity limiting part is matched with the inner contour of the connecting part of the cavity and the cavity.
As the optimization of the technical scheme, a limit groove is formed at the joint of the gas generating medicine containing part and the ignition tool gland, and the inner contour of the limit groove is matched with the outer contour of the joint of the ignition tool gland.
As the preferable of the technical proposal, the igniter gland is composed of an igniter support cover and an igniter upper gland;
the ignition device supporting cover is connected with the gas generating medicine accommodating part in a sealing way, the middle part of the surface of the ignition device supporting cover is provided with an ignition device supporting through hole matched with the outline of the lower part of the ignition device, and the ignition device is placed on the ignition device supporting through hole;
the upper pressing cover of the igniter is pressed above the supporting cover of the igniter, the middle part of the surface of the upper pressing cover of the igniter is provided with an igniter pressing through hole which is matched with the position of the supporting through hole of the igniter, and the igniter pressing through hole is matched with the upper outline of the igniter.
As the preferable of the technical scheme, the upper surface of the upper gland of the igniter is provided with the C-shaped bulge, and the C-shaped bulge surrounds the igniter passing through the pressing through hole of the igniter to form an operation space convenient for ignition.
As the preferable of the technical scheme, the ignition tool supporting through hole and the ignition tool pressing through hole are respectively provided with a chamfer for matching and sealing with the bevel edge of the side face of the ignition tool.
The igniter is not only used as an ignition tool, but also used as an important component of a sealing link, and the igniter is pressed by the igniter support cover and the igniter upper gland during sealing.
As the optimization of the technical scheme, the bottom end cover, the igniter gland and the gas generating medicine containing part are combined and connected with the sealing surface through the O-shaped ring in a sealing way.
Preferably, the sensor connecting portion is formed by a sensor connecting seat screwed with the screw hole and a sensor transition joint connected to the sensor connecting seat.
Compared with the prior art, the invention has the following advantages:
(1) The performance testing device of the gas generating medicine for the safety airbag is sealed in a pressing mode, and has the advantages of short pressure release time, convenience in assembly and high safety coefficient;
(2) The structure is simple and portable;
(3) The 45# heat treated steel is adopted as a material, can bear the pressure of 100Mpa, and has lower cost than the gun steel;
(4) The internal cavity is small, the amount of the gas generating medicine required is less, and the test cost is reduced;
(5) The direct pressing design is adopted, and the ignition tool containing cavity is designed, so that the sealing performance is good; the igniter is a key component of the safety airbag, belongs to standard products, and has no influence on test results.
Drawings
Fig. 1 is a schematic perspective view of a performance test device for a gas generating agent for an airbag.
Fig. 2 is an exploded view of the test device.
Fig. 3 is a schematic side sectional structure of the testing device.
In the figure: the gas generating medicine accommodating part 1, the cavity 11, the sensor mounting plane 12, the screw hole 13, the limit groove 14, the bottom end cover 2, the cavity limit part 21, the igniter gland 3, the igniter 31, the igniter support cover 32, the igniter support through hole 321, the igniter upper gland 33, the igniter press-fit through hole 331, the C-shaped bulge 332, the operation space 333, the sensor connecting part 4, the sensor connecting seat 41 and the sensor transition joint 42.
Detailed Description
The invention is described in further detail below with reference to the attached drawings and to specific embodiments:
examples: referring to fig. 1-3, a performance testing device of a gas generating agent for an air bag is manufactured by adopting 45# heat treated steel as a material, and comprises a gas generating agent accommodating part 1, bottom end caps 2 and an igniter gland 3 which are connected to two ends of the gas generating agent accommodating part 1 in a sealing manner, and further comprises a sensor connecting part 4 communicated with the inside of the gas generating agent accommodating part 1;
an igniter 31 is arranged in the igniter gland 3;
the gas generating medicine accommodating part 1 is a cylindrical container, a cavity 11 for accommodating gas generating medicine is arranged in the container, a sensor mounting plane 12 is arranged on the side wall of the container, a screw hole 13 is arranged on the sensor mounting plane 12, a sensor connecting seat 41 is connected to the sensor mounting plane 12 through the screw hole 13, and a sensor transition joint 42 is further arranged on the sensor connecting seat 41;
the bottom end cover 2 and the gas generating medicine accommodating part 1 are in pressing fit with each other through an O-shaped ring to realize sealing connection, a cavity limiting part 21 is arranged on the surface, connected with the gas generating medicine accommodating part 1, of the bottom end cover 2, and the outer contour of the cavity limiting part 21 is matched with the inner contour of the connecting part of the cavity 11;
the igniter gland 3 and the gas generating medicine accommodating part 1 are pressed together with a sealing plane through an O-shaped ring to realize sealing connection; a limit groove 14 is arranged at the joint of the gas generating medicine accommodating part 1 and the igniter gland 3, and the inner contour of the limit groove 14 is matched with the outer contour of the joint of the igniter gland 3;
the igniter gland 3 is composed of an igniter support cover 32 and an igniter upper gland 33, wherein the igniter support cover 32 is in sealing connection with the gas generating medicine accommodating portion 1, an igniter support through hole 321 which is matched with the lower contour of the igniter 31 is arranged in the middle of the surface of the igniter support cover 32, and the igniter 31 is placed on the igniter support through hole 321; the upper pressing cover 33 of the igniter is pressed above the supporting cover 32 of the igniter, the middle part of the surface of the upper pressing cover is provided with an igniter pressing through hole 331 which is matched with the position of the supporting through hole 321 of the igniter, and the igniter pressing through hole 331 is matched with the upper outline of the igniter 31; the igniter support through hole 321 and the igniter pressing through hole 331 are respectively provided with a chamfer for matching and sealing with the bevel edge of the side face of the igniter 31;
the upper surface of the upper pressing cover 33 of the igniter is provided with a C-shaped protrusion 332, and the C-shaped protrusion 332 surrounds the igniter 31 passing through the pressing through hole 331 of the igniter, so as to form an operation space 333 for facilitating ignition.
Claims (5)
1. The utility model provides a performance test device of gas medicine is produced to air bag which characterized in that: the gas generating device comprises a gas generating medicine accommodating part (1), bottom end covers (2) and an igniter gland (3) which are connected to two ends of the gas generating medicine accommodating part (1) in a sealing manner, and a sensor connecting part (4) communicated with the inside of the gas generating medicine accommodating part (1);
an igniter (31) is arranged in the igniter gland (3);
the bottom end cover (2) and the gas generating medicine accommodating part (1) are pressed together through an O-shaped ring and a sealing plane to realize sealing connection;
the igniter gland (3) and the gas generating medicine accommodating part (1) are pressed together with a sealing plane through an O-shaped ring to realize sealing connection;
the gas generating medicine accommodating part (1) is a cylindrical container, and a cavity (11) for accommodating gas generating medicine is arranged in the gas generating medicine accommodating part;
a cavity limiting part (21) is arranged on the surface of the bottom end cover (2) connected with the gas generating medicine accommodating part (1), and the outer contour of the cavity limiting part (21) is matched with the inner contour of the connecting part of the cavity (11);
a limit groove (14) is formed at the joint of the gas generating medicine accommodating part (1) and the ignition tool gland (3), and the inner contour of the limit groove (14) is matched with the outer contour of the joint of the ignition tool gland (3) and the limit groove;
the igniter gland (3) is composed of an igniter support cover (32) and an igniter upper gland (33);
the igniter support cover (32) is connected with the gas generating medicine accommodating part (1) in a sealing way, the middle part of the surface of the igniter support cover is provided with an igniter support through hole (321) matched with the lower outline of the igniter (31), and the igniter (31) is placed on the igniter support through hole (321);
the upper pressing cover (33) of the igniter is pressed above the supporting cover (32) of the igniter, the middle part of the surface of the upper pressing cover is provided with an igniter pressing through hole (331) which is matched with the position of the supporting through hole (321) of the igniter, and the igniter pressing through hole (331) is matched with the upper outline of the igniter (31);
the performance testing device adopts a direct pressing mode to seal, two materials are pressed together on the sealing surface after being pressed to provide the binding force required by sealing, the pressure release time is short, the assembly is convenient, and the problems that the threaded sealing structure is unfavorable for pressure release, the pressure release time is long and the operation is complex are solved.
2. The performance test device for a gas generating agent for an airbag according to claim 1, wherein: the side wall of the gas generating medicine accommodating part (1) is provided with a sensor mounting plane (12), the sensor mounting plane (12) is provided with a screw hole (13), and the sensor connecting part (4) is connected to the sensor mounting plane (12) through the screw hole (13).
3. The performance test device for a gas generating agent for an airbag according to claim 1, wherein: the upper surface of the upper pressing cover (33) of the igniter is provided with a C-shaped bulge (332), and the C-shaped bulge (332) surrounds the igniter (31) penetrating through the pressing through hole (331) of the igniter to form an operation space (333) convenient for ignition.
4. The performance test device for a gas generating agent for an airbag according to claim 1, wherein: the igniter support through hole (321) and the igniter pressing through hole (331) are both provided with chamfers for sealing in a matched manner with the bevel edges of the side faces of the igniter (31).
5. The performance test device for a gas generating agent for an airbag according to claim 2, wherein: the sensor connecting part (4) is composed of a sensor connecting seat (41) which is in threaded connection with the screw hole (13) and a sensor transition joint (42) which is connected to the sensor connecting seat (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710317035.1A CN107036930B (en) | 2017-05-08 | 2017-05-08 | Performance test device for gas generating medicine in safety airbag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710317035.1A CN107036930B (en) | 2017-05-08 | 2017-05-08 | Performance test device for gas generating medicine in safety airbag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107036930A CN107036930A (en) | 2017-08-11 |
| CN107036930B true CN107036930B (en) | 2023-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710317035.1A Active CN107036930B (en) | 2017-05-08 | 2017-05-08 | Performance test device for gas generating medicine in safety airbag |
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| Country | Link |
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| CN (1) | CN107036930B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111077077A (en) * | 2019-12-30 | 2020-04-28 | 上海感图网络科技有限公司 | AI detection device and method for safety air bag igniter container |
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| CN107036930A (en) | 2017-08-11 |
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