Air bag restraint system gas generator filter screen assembly

Abstract

The utility model relates to the technical field of filter screens, in particular to a safety air bag gas generator filter screen assembly which comprises an outer net cover, the outer net cover is arranged on the outer side of a safety air bag gas generator in a sleeved mode, elastic hoop plates are fixed to the two ends of the outer net cover, and an inner net cover is arranged on the inner side of the outer net cover. The inner mesh enclosure is inserted into the inner side of a shell of the airbag gas generator, a first screw sleeve is inserted into the surface of the inner mesh enclosure, a second screw sleeve is inserted into the surface of the elastic hoop plate, and the second screw sleeve is in threaded connection with the first screw sleeve; the device has the advantages that the filter screen assembly is composed of the outer screen cover, the elastic hoop plate, the bolt, the rubber clamping piece, the inner screen cover, the penetrating hole, the screw sleeve, the rubber ring and the like, the structure is simple and clear, and manufacturing and assembling are easy; due to the design of the elastic hoop plate and the bolt, the outer net cover can be firmly fixed to the outer side of the safety airbag gas generator, and the rubber clamping piece provides extra clamping force and sealing effect; the inner mesh enclosure is connected with the outer mesh enclosure through the screw sleeve, and the installation process is simple and fast.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter screen field, concretely is a kind of airbag gas generator filter screen assembly. BACKGROUND

[0002] With the rapid development of automobile industry, airbag system has become indispensable safety device in modern automobile. When vehicle collision occurs, airbag can inflate rapidly and unfold, to provide effective protection for passenger. Airbag gas generator, as the core component of airbag system, its performance directly affects the unfolding effect of airbag and the safety of passenger.

[0003] Traditional airbag gas generator generates a large amount of gas when working, and these gases directly rush into the bag belt of airbag after breaking through the partition layer in the generator body. However, these gases often contain some impurities and particulate matter, which may adversely affect the performance of airbag and the safety of passenger if directly charged into airbag. Therefore, gas needs to be filtered to ensure that the gas charged into airbag is pure and harmless.

[0004] At present, there are some filter devices for airbag gas generator on the market, but most of these devices have complex structure, inconvenient installation and limited filtering effect. Therefore, it is particularly important to develop an airbag gas generator filter screen assembly with simple structure, convenient installation and good filtering effect. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an airbag gas generator filter screen assembly to solve the problems raised in the above background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an airbag gas generator filter screen assembly, comprising an outer mesh cover, the outer mesh cover is sleeved on the outside of airbag gas generator, both ends of the outer mesh cover are fixed with elastic hoop plates, the inner side of the outer mesh cover is provided with an inner mesh cover, the inner mesh cover is inserted into the inner side of the shell of airbag gas generator, the surface of the inner mesh cover is inserted with a silk sleeve one, the surface of the elastic hoop plate is inserted with a silk sleeve two, and the silk sleeve two and the silk sleeve one are screwed.

[0007] Preferably, the elastic hoop plate is in the form of a semicircular ring plate, each group of elastic hoop plates has two, both ends of the two elastic hoop plates are provided with bolt holes, and the two groups of bolt holes are penetrated by bolts.

[0008] Preferably, the inner ring surface of the elastic hoop plate is fixed with a rubber clamping piece, and the rubber clamping piece is in the form of a semicircular ring plate.

[0009] Preferably, the surface of the inner mesh cover is provided with a plurality of perforations one, the plurality of perforations one is circumferentially distributed with the inner mesh cover as the central axis, the wire sleeve one is a T-shaped circular tube, one end of the wire sleeve one is inserted and fixed in the perforation one, and the inner ring surface of the wire sleeve one is provided with internal threads, and the other end of the wire sleeve one has an outer ring diameter larger than the hole diameter of the perforation one.

[0010] Preferably, the surface of the outer mesh cover is provided with a plurality of perforations two, the plurality of perforations two correspond to the plurality of perforations one, the wire sleeve two is a T-shaped circular tube structure, one end of the wire sleeve two is inserted into the wire sleeve one after passing through the perforation two, the outer ring surface of the wire sleeve two is provided with external threads, and the external threads and the internal threads are connected in a matched mode.

[0011] Preferably, the pipe body of the wire sleeve two is provided with a rubber ring fixed thereon, and the rubber ring is clamped between the wire sleeve two and the perforation two.

[0012] Compared with the prior art, the airbag gas generator filter screen assembly has the following beneficial effects:

[0013] The airbag gas generator filter screen assembly has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the airbag gas generator filter screen assembly;

[0015] Figure 2 It is a structural top view of the airbag gas generator filter screen assembly;

[0016] Figure 3 It is a structural sectional view of the airbag gas generator filter screen assembly; Figure 2

[0017] Figure 4 It is an enlarged structural schematic view of the airbag gas generator filter screen assembly; Figure 3

[0018] It is a structural schematic view of the wire sleeve two of the airbag gas generator filter screen assembly. Figure 5 In the drawing: the outer mesh cover 1, the elastic hoop plate 2, the bolt 3, the rubber clamp 4, the inner mesh cover 5, the perforation one 6, the perforation two 7, the wire sleeve one 8, the wire sleeve two 9, and the rubber ring 10.

[0019] DETAILED DESCRIPTION

[0020] ​​In order to make the purpose, technical scheme of the utility model carry on clear, complete description, and the advantage is more clear and distinct, the following combining with the drawing to the utility model embodiment carries on further detailed explanation.Should understand, the specific embodiment described here is a part of the embodiment of the utility model, rather than all the embodiments, only to explain the embodiment of the utility model, and is not used to limit the embodiment of the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belongs to the scope of the utility model protection.

[0021] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a safety air bag gas generator filter screen subassembly, including outer mesh cover 1, outer mesh cover 1 is sleeved in the outside of safety air bag gas generator, the both ends of the outer mesh cover 1 are fixed with elastic hoop plate 2, elastic hoop plate 2 is half circular ring plate structure, each group of elastic hoop plate 2 is equipped with two, the both ends of two elastic hoop plate 2 are equipped with bolt hole, two groups of bolt hole are penetrated by bolt 3;The inner ring surface of elastic hoop plate 2 is fixed with rubber clamping piece 4, and rubber clamping piece 4 is half circular ring plate.

[0022] After the outer mesh cover 1 is sleeved in the shell outside of safety air bag gas generator, bolt 3 is penetrated through the bolt hole in the end of two elastic hoop plate 2, and bolt 3 is screwed, at this time, two elastic hoop plate 2 clamps the shell of safety air bag gas generator, and rubber clamping piece 4 is clamped between elastic hoop plate 2 and safety air bag gas generator and produces elastic deformation, at this time, outer mesh cover 1 is protected in the outside of safety air bag gas generator.

[0023] The inside of outer mesh cover 1 is equipped with inner mesh cover 5, and inner mesh cover 5 is inserted in the inside of the shell of air bag gas generator, and the surface of inner mesh cover 5 is inserted with silk sleeve one 8, and the surface of elastic hoop plate 2 is inserted with silk sleeve two 9, and silk sleeve two 9 is screwed with silk sleeve one 8, and the surface of inner mesh cover 5 is equipped with perforation one 6, and the plurality of perforation one 6 is distributed in circle with inner mesh cover 5 as central axis, and silk sleeve one 8 is "T" shaped circular tube, and one end of silk sleeve one 8 is inserted and fixed in perforation one 6, and the inner ring surface of silk sleeve one 8 is equipped with internal thread, and the other end of silk sleeve one 8 is equipped with outer ring diameter greater than the hole diameter of perforation one 6;The surface of outer mesh cover 1 is equipped with perforation two 7, and perforation two 7 and perforation one 6 are one to one correspondence, and silk sleeve two 9 is "T" shaped circular tube structure, and one end of silk sleeve two 9 is inserted into silk sleeve one 8 after passing through perforation two 7, and the outer ring surface of silk sleeve two 9 is equipped with external thread, and the internal thread of external thread and internal thread are connected;Rubber ring 10 is fixed on the pipe body of silk sleeve two 9, and rubber ring 10 is clamped between silk sleeve two 9 and perforation two 7.

[0024] The inner mesh 5 is inserted into the shell of the airbag gas generator, the outer ring surface of the inner mesh 5 is close to the inner wall of the shell of the airbag gas generator, then the wire sleeve two 9 is passed through the perforation two 7, and the wire sleeve two 9 is screwed in the wire sleeve one 8, so that the inner mesh 5 is limited in the shell of the airbag gas generator; the airbag is provided with different specifications of the gas generator, when the vehicle collides, the gas generator makes the airbag inflate and expand, protects the safety of the passenger, the airbag enters the point explosion device through the wire harness, generates sparks to explode the primer, the gunpowder instantaneously generates a large amount of gas, breaks the partition in the generator body, and rushes into the bag belt through the hole on the body, the huge pressure makes the bag belt extrude and break the airbag cover plate, and inflates and forms; the filter device of the airbag gas generator is ventilated through the mesh of the outer mesh 1 and the inner mesh 5, so that the gas is filtered and flows out.

[0025] The use process of the airbag gas generator filter net assembly is as follows:

[0026] According to the requirements of the vehicle or safety system, the type and specification of the airbag gas generator required to be installed are confirmed. The outer mesh 1 is carefully sleeved on the outside of the airbag gas generator, and the position of the outer mesh 1 is ensured to be correct, so that the outer mesh 1 can completely cover the outer shell of the gas generator. The bolt 3 is passed through the bolt hole of the corresponding position of the two elastic hoop plates 2, and the bolt is tightened, so that the elastic hoop plates 2 can firmly clamp the outer shell of the airbag gas generator. It is checked whether the rubber clamping piece 4 has been fixed on the inner ring surface of the elastic hoop plate 2, and it is ensured that the rubber clamping piece 4 can produce elastic deformation and better clamp the outer shell of the gas generator. The inner mesh 5 is inserted into the inner side of the shell of the airbag gas generator, and it is ensured that the outer ring surface of the inner mesh 5 is close to the inner wall of the shell of the gas generator. It is ensured that the perforation one 6 on the inner mesh 5 corresponds to the perforation two 7 on the outer mesh 1. The wire sleeve one 8 is inserted and fixed in the perforation one 6, and it is ensured that the inner ring surface of one end of the wire sleeve one 8 is provided with an internal thread. After the wire sleeve two 9 is passed through the perforation two 7, the wire sleeve two 9 is screwed, and the wire sleeve two 9 is screwed in the wire sleeve one 8. During the screwing process, attention is paid to keep the external thread of the wire sleeve two 9 and the internal thread of the wire sleeve one 8 in close cooperation. It is ensured that the rubber ring 10 is sleeved and fixed on the pipe body of the wire sleeve two 9, and the rubber ring 10 should be clamped between the wire sleeve two 9 and the perforation two 7 to provide additional sealing effect.

[0027] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An airbag inflator filter screen assembly comprising an outer screen housing (1) which is fitted on the outside of an airbag inflator, characterized in that: Both ends of the outer cover (1) are fixed with elastic hoop plates (2), the inner side of the outer cover (1) is provided with an inner cover (5), the inner cover (5) is inserted into the inner side of the shell of the air bag gas generator, the surface of the inner cover (5) is inserted with a silk sleeve one (8), the surface of the elastic hoop plate (2) is inserted with a silk sleeve two (9), the silk sleeve two (9) and the silk sleeve one (8) are screwed.

2. An airbag inflator screen assembly as defined in claim 1 wherein: The elastic hoop plate (2) is in a semicircular ring plate structure, each group of elastic hoop plates (2) is provided with two, both ends of the two elastic hoop plates (2) are provided with bolt holes, and the two groups of bolt holes are penetrated by bolts (3).

3. The inflator filter screen assembly of claim 1, wherein: The inner ring surface of the elastic hoop plate (2) is fixed with a rubber clamping piece (4), and the rubber clamping piece (4) is in a semicircular ring plate shape.

4. The inflator filter screen assembly of claim 1, wherein: The surface of the inner cover (5) is provided with a plurality of perforations one (6), the plurality of perforations one (6) are circumferentially distributed around the inner cover (5) as a central axis, the silk sleeve one (8) is in a "T" shaped circular tube, one end of the silk sleeve one (8) is inserted and fixed in the perforation one (6), and the inner ring surface of the silk sleeve one (8) is provided with an internal thread, and the other end of the silk sleeve one (8) is provided with an outer ring diameter larger than the hole diameter of the perforation one (6).

5. An airbag inflator screen assembly as defined in claim 4 wherein: The surface of the outer cover (1) is provided with a plurality of perforations two (7), the perforations two (7) and the perforations one (6) are one-to-one corresponding, the silk sleeve two (9) is in a "T" shaped circular tube structure, one end of the silk sleeve two (9) is inserted into the silk sleeve one (8) after penetrating through the perforation two (7), the outer ring surface of the silk sleeve two (9) is provided with an external thread, and the external thread and the internal thread are connected in a matched mode.

6. The inflator-to-filter screen assembly of claim 1, wherein: The pipe body of the silk sleeve two (9) is provided with a rubber ring (10) fixed thereon, and the rubber ring (10) is clamped between the silk sleeve two (9) and the perforation two (7).

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