Metal filtering piece for safety air bag filter

Abstract

The utility model relates to the technical field of safety air bag filters, and discloses a metal filtering piece for a safety air bag filter, which comprises a fixed disc, the bottom of the fixed disc is fixedly connected with a filtering quick release mechanism, the top of the fixed disc is fixedly connected with a sealing mechanism, and the top of the sealing mechanism is detachably connected with a butt joint mechanism. The bottom of the fixed disc is detachably connected with a fixed frame; the filter quick-release mechanism comprises a filter screen I, the exterior of the filter screen I is fixedly connected to the interior of the fixed disc, a plurality of arc-shaped connecting pieces are fixedly connected to the exterior of the filter screen I, a filter screen II is fixedly connected to the exteriors of the arc-shaped connecting pieces, and a plurality of clamping columns are slidably connected to the interior of the fixed disc. According to the utility model, impurities on the surface are shaken off, so that the cleaning effect of the filter element is ensured, the service life of the filter element is effectively prolonged, and the filter element is ensured to continuously and efficiently play a filtering role.

Description

Technical Field

[0001] This utility model relates to the field of airbag filter technology, and in particular to a metal filter element for airbag filters. Background Technology

[0002] Airbags are a crucial passive safety device in vehicles such as automobiles. They typically consist of a gas generator, airbag, and sensors. When a severe collision occurs, the sensors quickly detect the vehicle's sudden deceleration, triggering the gas generator. The gas generator produces a large amount of nitrogen or other gases in a very short time, causing the airbag to rapidly inflate and deploy, creating a soft buffer zone between the occupants and the rigid components of the vehicle. For example, in a frontal collision, the airbags at the steering wheel and dashboard deploy; in a side collision, the airbags at the side of the seats or in the doors deploy. Airbags effectively reduce the impact force on the head, chest, and other vital areas of the occupants during a collision, significantly reducing the severity of injuries and lowering the risk of death or injury.

[0003] The airbag filter is a crucial component of the airbag system, primarily installed in the gas delivery channel between the airbag gas generator and the airbag. Its core function is to filter the gas as it is generated and delivered to the airbag. During a collision, the gas generator operates, producing gas containing impurities such as metal fragments, dust, and byproducts of internal chemical reactions. The airbag filter, through its fine mesh structure, effectively intercepts these impurities, ensuring the purity of the gas entering the airbag.

[0004] However, existing airbag filters using metal filter elements are not easily removed for effective cleaning. When cleaning is required, maintenance personnel must spend a significant amount of time, using various specialized tools and disassembling numerous surrounding components to remove the metal filter element. Furthermore, due to the material properties and complex filter structure of the metal filter element, ordinary cleaning methods struggle to penetrate the fine pores of the filter, failing to effectively remove accumulated dust, debris, and other impurities. This significantly impacts the cleaning effect, potentially threatening the normal performance and lifespan of the airbag filter, and could affect the reliable operation of the airbag in critical moments. Therefore, to address these shortcomings, a new type of metal filter element for airbag filters is proposed to solve these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a metal filter element for airbag filters, aiming to improve the problem that some metal filter elements for airbag filters in the prior art are not easy to remove quickly for effective cleaning.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A metal filter element for an airbag filter includes a fixed plate, a filter quick-release mechanism fixedly connected to the bottom of the fixed plate, a sealing mechanism fixedly connected to the top of the fixed plate, a docking mechanism detachably connected to the top of the sealing mechanism, and a fixed frame detachably connected to the bottom of the fixed plate.

[0008] The quick-release filter mechanism includes a filter screen one, the filter screen one is fixedly connected to the inside of the fixed plate, the filter screen one is fixedly connected to multiple arc-shaped connectors, the multiple arc-shaped connectors are fixedly connected to the outside of the filter screen two, the inside of the fixed plate is slidably connected to multiple locking posts, the outside of each of the multiple locking posts is provided with a reset component, and the opposite side of each of the multiple locking posts is fixedly connected to a pull plate.

[0009] As a further description of the above technical solution:

[0010] The sealing mechanism includes a sealing disc, the bottom of which is fixedly connected to the top of the fixed disc. A sealing groove is provided inside the sealing disc. Multiple sliding discs are slidably connected inside the sealing disc. A compression ball is fixedly connected to the far side of each of the multiple sliding discs. A spring is fixedly connected to the near side of each of the multiple sliding discs. A sealing ring is fixedly connected inside the sealing disc. Multiple mating grooves are provided inside the sealing ring.

[0011] As a further description of the above technical solution:

[0012] The docking mechanism includes a docking plate, which is detachably connected to the top of the sealing mechanism by bolts. An air outlet pipe is fixedly connected inside the docking plate, and a sealing ring is fixedly connected inside the docking plate.

[0013] As a further description of the above technical solution:

[0014] Each of the multiple reset components includes a retaining ring, and the outside of each of the multiple retaining rings is fixedly connected to the outside of each of the multiple retaining posts. A spring is sleeved on the outside of each of the multiple retaining posts.

[0015] As a further description of the above technical solution:

[0016] The top of the fixed frame is provided with multiple docking holes, and the outside of the locking post is slidably connected to the inside of the docking holes;

[0017] As a further description of the above technical solution:

[0018] The outer side of the fixed ring is slidably connected to the inside of the fixed disk, and the side of the spring away from the fixed ring is fixedly connected to the inside of the fixed disk;

[0019] As a further description of the above technical solution:

[0020] The side of the card post closest to the second filter screen is in contact with the outside of the second filter screen, and the bottom of the first filter screen and the second filter screen are in contact with the bottom inside of the fixed frame.

[0021] As a further description of the above technical solution:

[0022] The outer side of the extrusion ball is slidably connected to the inside of the mating groove, and the outer side of the sealing ring is slidably connected to the inside of the sealing groove.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, when cleaning the filter element is required, the sealing mechanism and the docking mechanism are first separated, and then the quick-release filter mechanism is removed. Subsequently, the operator only needs to pull the pull plate, which moves the fixing ring, causing the spring to compress and the locking pin to slide out of the docking hole at the top of the fixing frame. This easily removes the fixing frame, greatly simplifying the disassembly process and enabling quick removal of the filter element's outer shell. After removing the fixing frame, filter screen one and filter screen two can be easily cleaned. Pulling the pull plate and quickly releasing it causes the locking pin to strike filter screen two under the elastic force of spring one, causing filter screen one and filter screen two to vibrate and dislodge surface impurities, ensuring the cleaning effect of the filter element, effectively extending its service life, and ensuring its continuous and efficient filtration function.

[0025] 2. In this utility model, as the sealing mechanism and the docking mechanism further dock, the air outlet pipe aligns with the filter screen. At this time, the sealing ring inside the sealing mechanism comes into play. Under the elastic force of the second spring, the sliding disc inside the sealing disc drives the compression ball to compress the sealing ring. The compression ball slides in the docking groove inside the sealing ring, continuously applying pressure to the sealing ring, causing it to deform and tightly fit the gap at the docking point between the filter screen and the air outlet pipe, forming a second sealing line. This seals the gas from different levels and positions, greatly improving the reliability of the seal and ensuring that gas leakage is effectively prevented when the airbag is deflating. This ensures the normal operation of the airbag filter and provides reliable protection for the vehicle safety system. Attached Figure Description

[0026] Figure 1 This is a perspective view of a metal filter element for an airbag filter proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the fixing frame structure of a metal filter element for an airbag filter proposed in this utility model;

[0028] Figure 3This is a schematic diagram of the filter screen structure of a metal filter element for an airbag filter proposed in this utility model;

[0029] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0030] Figure 5 This is a schematic diagram of the sealing ring structure of a metal filter element for an airbag filter proposed in this utility model;

[0031] Figure 6 This is a schematic diagram of the air outlet pipe structure of a metal filter element for an airbag filter proposed in this utility model.

[0032] Legend:

[0033] 1. Fixed plate; 2. Quick-release filter mechanism; 21. Filter screen one; 22. Arc-shaped connector; 23. Filter screen two; 24. Locking post; 25. Reset assembly; 251. Fixed ring; 252. Spring one; 26. Pull plate; 3. Sealing mechanism; 31. Sealing plate; 32. Sealing groove; 33. Sliding plate; 34. Extrusion ball; 35. Spring two; 36. Connecting groove; 37. Sealing ring; 4. Connecting mechanism; 41. Connecting plate; 42. Air outlet pipe; 43. Sealing ring; 5. Fixed frame. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figures 2 to 4This utility model provides an embodiment of a metal filter element for an airbag filter, including a fixing plate 1. The fixing plate 1 serves as a basic support and connection in the entire metal filter element for the airbag filter. A quick-release filter mechanism 2 is fixedly connected to the bottom of the fixing plate 1, and a sealing mechanism 3 is fixedly connected to the top of the fixing plate 1. A docking mechanism 4 is detachably connected to the top of the sealing mechanism 3, and a fixing frame 5 is detachably connected to the bottom of the fixing plate 1. The inner bottom side of the fixing frame 5 provides stable support for filter screen 21 and filter screen 23, ensuring that they maintain a stable position during operation and will not shift due to airflow impact. At the same time, when it is necessary to clean filter screen 21 and filter screen 23, the fixing frame 5 can be easily removed, providing convenience for cleaning work. The quick-release filter mechanism 2 includes a filter screen 21, which is externally fixedly connected to the inside of the fixed plate 1. The filter screen 21 plays the role of primary filtration. It is made of special metal material and has good air permeability and filtration accuracy. The size of the mesh is precisely calculated and designed to effectively intercept larger particulate impurities generated when the airbag is deployed.

[0036] Multiple arc-shaped connectors 22 are externally fixed to filter screen 21. The arc design allows it to better fit the shapes of filter screen 21 and filter screen 23, achieving not only a physical connection between them but also enhancing the stability of the entire filtration structure. Filter screen 23 is externally fixed to the multiple arc-shaped connectors 22. The bottoms of filter screen 21 and filter screen 23 contact the inner bottom side of the fixed frame 5. Filter screen 23 plays a further fine filtration role, working in conjunction with filter screen 21 to further filter the gas after the initial filtration, capturing smaller impurities and ensuring a high level of cleanliness in the final discharged gas. Multiple locking posts 24 are internally slidably connected to the fixed plate 1. When the locking posts 24 slide into the docking holes, they securely fix the fixed frame 5 to the fixed plate 1, preventing displacement of the fixed frame 5 due to vibration or airflow impact during airbag operation. Multiple docking holes are opened at the top of the fixed frame 5, and the locking posts 24 are externally slidably connected to the inside of these holes.

[0037] The side of the retaining post 24 closest to the filter screen 23 contacts the outside of the filter screen 23. Each retaining post 24 has a reset assembly 25 on its exterior, and each reset assembly 25 includes a fixing ring 251, which serves as a connection and guide. The fixing rings 251 are fixedly connected to the exterior of the retaining posts 24, and the exterior of the fixing rings 251 is slidably connected to the interior of the fixed disk 1. Each retaining post 24 is fitted with a spring 252, which provides elastic force to achieve displacement and reset of the retaining post 24. The side of the spring 252 furthest from the fixing ring 251 is fixedly connected to the interior of the fixed disk 1. When the pull plate 26 is pulled, causing the retaining post 24 to slide, the spring 252 is compressed, storing elastic potential energy. Once the pull plate 26 is released, the spring 252 releases its elastic potential energy, pushing the retaining post 24 to quickly reset, impacting the filter screen 23 to clean it. Pull plates 26 are fixedly connected to the opposite sides of the multiple locking posts 24. When it is necessary to disassemble the fixing frame 5 or clean the filter screen, the operator only needs to pull the pull plate 26, and the locking posts 24 can be moved to slide in the fixing plate 1 through the fixing ring 251 to complete the corresponding operation.

[0038] Reference Figure 1 , Figure 2 and Figure 5 The sealing mechanism 3 includes a sealing disc 31, the bottom of which is fixedly connected to the top of the fixed disc 1. A sealing groove 32 is formed inside the sealing disc 31. When the sealing mechanism 3 docks with the docking mechanism 4, the outer surface of the sealing ring 43 can be tightly slidably connected to the inside of the sealing groove 32, forming the first line of defense. Multiple sliding discs 33 are slidably connected inside the sealing disc 31. Under the elastic force of spring 35, the sliding discs 33 can drive the extrusion ball 34 to slide within the sealing disc 31, thereby extruding and adjusting the sealing ring 37 to ensure that the sealing ring 37 can perform a good sealing function under different working conditions. Extrusion balls 34 are fixedly connected to the far sides of the multiple sliding discs 33, and springs 35 are fixedly connected to the near sides of the multiple sliding discs 33. Springs 35 provide thrust to the extrusion balls 34, enabling them to maintain contact with the docking groove 36 and apply a certain pressure. A sealing ring 37 is fixedly connected inside the sealing disc 31. Multiple mating grooves 36 are opened inside the sealing ring 37. The external part of the extrusion ball 34 is slidably connected inside the mating grooves 36. When the sealing mechanism 3 and the mating mechanism 4 are mated, the air outlet pipe 42 is aligned with the filter screen 21. At this time, the sealing ring 37 is located at the connection between the two. Under the extrusion action of the extrusion ball 34, the sealing ring 37 deforms and can tightly fit the gap at the mating point between the filter screen 21 and the air outlet pipe 42, effectively preventing gas leakage and ensuring the sealing effect when the airbag is deflating.

[0039] Reference Figure 1 , Figure 2 and Figure 6The docking mechanism 4 includes a docking plate 41, which is detachably connected to the top of the sealing mechanism 3 by bolts. An air outlet pipe 42 is fixedly connected inside the docking plate 41. One end of the air outlet pipe 42 is connected to the air outlet of the airbag, and the other end aligns with the filter screen 21 when the sealing mechanism 3 and the docking mechanism 4 are docked, ensuring that the gas generated when the airbag deploys can smoothly pass through the air outlet pipe 42 into the filtration system for filtration. A sealing ring 43 is fixedly connected inside the docking plate 41, and the sealing ring 43 is slidably connected to the inside of the sealing groove 32. The sealing ring 43 is made of a material with good sealing performance and elasticity, such as rubber or silicone.

[0040] Working principle: When using the metal filter element of this airbag filter, the sealing mechanism 3 and the docking mechanism 4 are first connected by bolts. At this time, the outer part of the sealing ring 43 is slidably connected to the inside of the sealing groove 32, which provides the first line of sealing. At the same time, as the sealing mechanism 3 and the docking mechanism 4 are docked, the exhaust pipe 42 and the filter screen 21 are aligned. The sealing ring 37 seals the connection between the two. At this time, the elastic force of the spring 35 keeps the compression ball 34 under pressure inside the docking groove 36, which causes the sealing ring 37 to deform. This allows the sealing ring 37 to fully fill the gap at the joint between the filter screen 21 and the exhaust pipe 42, thus providing the second line of sealing and ensuring the sealing effect when the airbag is deflating.

[0041] When it is necessary to disassemble the fixed frame 5, first separate the sealing mechanism 3 from the docking mechanism 4. Then, remove the filter quick-release mechanism 2. Next, pull the pull plate 26 to move the fixed ring 251, which will compress the spring 252. This will cause the locking post 24 to slide out from the inside of the fixed frame 5, allowing the fixed frame 5 to be removed. Then, clean the filter screen 21 and filter screen 23. Pull the pull plate 26 and then quickly release it. This will cause the locking post 24 to slide out from the inside of the fixed frame 5. Under the elastic force of spring 252, column 24 rapidly impacts filter screen 23, causing filter screen 23 and filter screen 21 to vibrate. This shakes off impurities from the surfaces of filter screens 21 and 23, facilitating cleaning. The fixed frame 5 provides stable support for filter screens 21 and 23, and the arc-shaped connector 22 ensures a stable connection between them, guaranteeing effective cleaning.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A metal filter for an airbag filter comprising a fixing disc (1), characterized in that: The bottom of the fixed disc (1) is fixedly connected with a filter quick release mechanism (2), the top of the fixed disc (1) is fixedly connected with a sealing mechanism (3), the top of the sealing mechanism (3) is detachably connected with a docking mechanism (4), and the bottom of the fixed disc (1) is detachably connected with a fixed frame (5). The filter quick release mechanism (2) comprises a filter screen one (21), the outer portion of the filter screen one (21) is fixedly connected to the inner portion of the fixed disc (1), a plurality of arc-shaped connecting pieces (22) are fixedly connected to the outer portion of the filter screen one (21), a plurality of filter screen twos (23) are fixedly connected to the outer portion of the arc-shaped connecting pieces (22), a plurality of clamping columns (24) are slidably connected to the inner portion of the fixed disc (1), a reset assembly (25) is arranged on the outer portion of each clamping column (24), and a pull plate (26) is fixedly connected to the far side of each clamping column (24).

2. The metal filter for an airbag filter according to claim 1, wherein: The sealing mechanism (3) comprises a sealing disc (31), the bottom of the sealing disc (31) is fixedly connected to the top of the fixed disc (1), a sealing groove (32) is formed in the inner portion of the sealing disc (31), a plurality of sliding discs (33) are slidably connected to the inner portion of the sealing disc (31), an extrusion ball (34) is fixedly connected to the far side of each sliding disc (33), a spring two (35) is fixedly connected to the near side of each sliding disc (33), a sealing ring (37) is fixedly connected to the inner portion of the sealing disc (31), and a plurality of docking grooves (36) are formed in the inner portion of the sealing ring (37).

3. The metal filter for an airbag filter according to claim 2, wherein: The docking mechanism (4) comprises a docking disc (41), the docking disc (41) is detachably connected to the top of the sealing mechanism (3) through bolts, an air outlet pipe (42) is fixedly connected to the inner portion of the docking disc (41), and a sealing ring (43) is fixedly connected to the inner portion of the docking disc (41).

4. The metal filter for an airbag filter according to claim 1, wherein: Each reset assembly (25) comprises a fixed ring (251), and the outer portion of each fixed ring (251) is fixedly connected to the outer portion of each clamping column (24).

5. The metal filter for an airbag filter according to claim 1, wherein: The outer portion of the fixed ring (251) is slidably connected to the inner portion of the fixed disc (1), and the side, away from the fixed ring (251), of the spring one (252) is fixedly connected to the inner portion of the fixed disc (1).

6. The metal filter for an airbag filter according to claim 4, wherein: The side, close to the filter screen two (23), of the clamping column (24) is in contact with the outer portion of the filter screen two (23), and the filter screen one (21) and the bottom of the filter screen two (23) are in contact with the inner bottom side of the fixed frame (5).

7. The metal filter for an airbag filter according to claim 1, wherein: The outer portion of the extrusion ball (34) is slidably connected to the inner portion of the docking groove (36), and the outer portion of the sealing ring (43) is slidably connected to the inner portion of the sealing groove (32).

8. The metal filter for an airbag filter according to claim 3, wherein: ​

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