A filter pad for airbags

Abstract

This utility model relates to the field of filter technology and discloses a filter pad for airbags, including a base plate. A shell is fixedly connected to the top of the base plate, and a filter screen is fixedly connected to the inner wall of the shell. Multiple locking blocks are fixedly connected inside the filter screen, and connecting plates are fixedly connected to the bottom ends of each locking block. A rotating shaft is fixedly connected to the bottom end of each connecting plate, and limit rings are fixedly connected to the outer ends of both ends of the rotating shaft. A telescopic column is fixedly connected inside the limit rings, and a spring is sleeved on the outer side of the telescopic column. Buckles are fixedly connected to adjacent sides of the multiple connecting plates. This utility model effectively solves the problem of inconvenient filter pad replacement in airbags. The operation is simple and easy to understand, significantly shortening replacement time and greatly improving maintenance efficiency, effectively solving the problem of inconvenient airbag filter pad replacement.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to a filter pad for airbags. Background Technology

[0002] The airbag filter plays a crucial role. In an airbag system, when a vehicle collides, the gas generator activates, producing a large amount of gas to rapidly inflate the airbag and protect the occupants. However, during this process, the explosion of explosives and other contaminants can generate numerous impurities, and the gas temperature is extremely high. The filter effectively filters these impurities, preventing them from entering the airbag and affecting its normal operation. Simultaneously, it absorbs heat, lowering the gas temperature and preventing damage to the airbag material and burns to the occupants, ensuring the airbag system functions stably and reliably.

[0003] During airbag inflation, the high-temperature, high-pressure gas generated by the gas generator is filtered and cooled. The filter pad is typically composed of multiple layers of filter materials of different materials with varying pore sizes and porosities. These materials can block harmful substances such as solid impurities and metal particles in the gas through physical interception and adsorption, preventing them from entering the airbag. Simultaneously, the filter pad material has excellent thermal conductivity, absorbing heat from the gas and lowering its temperature after passing through the filter pad, thus protecting the airbag and vehicle occupants from heat-related injuries.

[0004] However, some existing airbag filter pads present inconvenience during use, and their structural design is clearly flawed. The connections to other components within the airbag system are not only extremely tight and difficult to disassemble, but also completely fail to consider the need for easy future replacement, lacking necessary user-friendly design. Consequently, during filter pad replacement, even slight mishandling by maintenance personnel could easily cause accidental damage to closely connected airbag components, significantly increasing the cost and potential risks of the replacement operation. This severely restricts the convenience and efficiency of airbag filter pad replacement in multiple ways. Therefore, this paper proposes an airbag filter pad to solve these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a filter pad for airbags, aiming to improve the problem of inconvenient filter pad replacement in the use of existing airbag filter pads.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a filter pad for an airbag, comprising a base plate, a shell fixedly connected to the top of the base plate, a filter screen fixedly connected to the inner wall of the shell, multiple locking blocks fixedly connected inside the filter screen, connecting plates fixedly connected to the bottom ends of the multiple locking blocks, a rotating shaft fixedly connected to the bottom end of the connecting plate, limit rings fixedly connected to the outer ends of the rotating shaft, a telescopic column I fixedly connected inside the limit ring, a spring I sleeved on the outer side of the telescopic column I, buckles fixedly connected to adjacent sides of the multiple connecting plates, multiple telescopic columns II fixedly connected to the top of the limit ring, spring II sleeved on the outer side of the multiple telescopic columns II, a connecting ring fixedly connected to the top of the multiple telescopic columns II, multiple push blocks fixedly connected to the bottom end of the connecting ring, and a stabilizing component fixedly connected to the top of the base plate.

[0007] As a further description of the above technical solution: the stabilizing component includes multiple telescopic shells I, the bottom ends of the multiple telescopic shells I are fixedly connected to the top of the base plate, the bottom ends of the inner walls of the multiple telescopic shells I are all fixedly connected to vibration damping pads I, the top ends of the multiple vibration damping pads I are respectively fixedly connected to damping columns, the top ends of the damping columns are fixedly connected to vibration damping pads II, and the outside of the multiple damping columns is fitted with springs III.

[0008] As a further description of the above technical solution: the bottom ends of the plurality of connecting plates are slidably connected to the inside of the limiting ring, and the adjacent sides of the plurality of connecting plates are fixedly connected to the distant sides of the plurality of springs.

[0009] As a further description of the above technical solution: the adjacent sides of the plurality of connecting plates are fixedly connected to the distant sides of the plurality of telescopic columns, and the exteriors of the plurality of springs are all slidably connected to the interior of the limiting ring.

[0010] As a further description of the above technical solution: the outer sides of the plurality of push blocks are slidably connected to the inner walls of the plurality of buckles, and the top ends of the plurality of springs are fixedly connected to the bottom end of the connecting ring.

[0011] As a further description of the above technical solution: the bottom ends of the plurality of springs are fixedly connected to the top end of the limiting ring, and a top cover is fixedly connected to the top end of the outer shell.

[0012] As a further description of the above technical solution: the bottom end of the top cover is fixedly connected to the top end of the filter screen, the bottom end of the filter screen is fixedly connected to the top end of the base plate, and the bottom end of the base plate is fixedly connected to a plurality of telescopic shells.

[0013] As a further description of the above technical solution: the outer side of the spring three is slidably connected to the inner wall of the telescopic shell one, the outer side of the vibration damping pad one is fixedly connected to the inner wall of the telescopic shell one, the bottom end of the vibration damping pad one is fixedly connected to the top end of the base plate, and the outer side of the vibration damping pad two is slidably connected to the inner wall of the telescopic shell one.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the filter screen is connected to the inner wall of the outer shell fixed at the top of the base plate. The clip inside the filter screen is connected to the rotating shaft, limiting ring, etc. through the connecting plate. The limiting ring has a telescopic post and a spring inside. The connecting plate is connected to the buckle. The telescopic post at the top of the limiting ring has a spring inside and is connected to the connecting ring. The connecting ring is connected to the push block, thereby releasing the clip from fixing the filter screen and realizing the replacement of the filter screen, achieving the effect of convenient filter screen replacement.

[0016] 2. In this utility model, multiple telescopic shells are fixed to the top of the base plate, and the bottom of their inner walls are connected to vibration damping pads. The top of the damping column on the vibration damping pads is connected to vibration damping pads, and springs are also wrapped around the damping columns, thereby achieving a stable vibration reduction effect and ensuring the smooth operation of the equipment. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a filter pad for an airbag according to the present invention.

[0018] Figure 2 This is a schematic diagram of the top cover of a filter pad for an airbag according to the present invention.

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0021] Figure 5 for Figure 2 Enlarged view of point C in the middle.

[0022] Legend:

[0023] 1. Base plate; 2. Outer shell; 3. Telescopic shell one; 4. Locking block; 5. Connecting plate; 6. Rotating shaft; 7. Limiting ring; 8. Telescopic column one; 9. Spring one; 10. Buckle; 11. Push block; 12. Connecting ring; 13. Telescopic column two; 14. Spring two; 15. Vibration damping pad one; 16. Damping column; 17. Spring three; 18. Vibration damping pad two; 19. Top cover; 20. Telescopic shell two; 21. Filter screen. Detailed Implementation

[0024] 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.

[0025] Reference Figures 2 to 4 This utility model provides an embodiment of an airbag filter pad, comprising a base plate 1, with a housing 2 fixedly connected to the top of the base plate 1. The housing 2 protects the internal components, preventing dust and impurities from entering, and also mitigates direct impact damage to the internal structure from external forces. A filter screen 21 is fixedly connected to the inner wall of the housing 2. The filter screen 21 filters the passing medium through its fine mesh, intercepting impurities and particles. Multiple locking blocks 4 are fixedly connected inside the filter screen 21. Connecting plates 5 connect and transmit force, linking the locking blocks 4 to other components below, making the entire device more compact and stable. Connecting plates 5 are fixedly connected to the bottom ends of the multiple locking blocks 4. The rotating shaft 6 acts as a rotation axis, providing rotational freedom for the connected components.

[0026] A rotating shaft 6 is fixedly connected to the bottom of the connecting plate 5. Limiting rings 7 are fixedly connected to both ends of the rotating shaft 6. This fixed connection ensures that the limiting rings are tightly installed at both ends of the rotating shaft. A telescopic column 8 is fixedly connected inside the limiting ring 7. When the device is subjected to external force or when the position of certain components needs to be adjusted according to work requirements, the telescopic column 8 can extend or shorten accordingly. During this process, it can absorb a certain amount of impact force, acting as a buffer. A spring 9 is sleeved on the outside of the telescopic column 8. The function of the spring 9 is to provide elastic restoring force for the telescopic column 8's extension and retraction. When the telescopic column 8 is compressed by external force, the spring 9 stores elastic potential energy; when the external force disappears, the spring 9 releases the elastic potential energy, pushing the telescopic column 8 back to its original position. Buckles 10 are fixedly connected to adjacent sides of multiple connecting plates 5. When two components need to be connected, they can be quickly connected by engaging with corresponding slots or other mating structures using the buckles 10.

[0027] Multiple telescopic columns 13 are fixedly connected to the top of the limiting ring 7. Each telescopic column 13 is fitted with a spring 14, which provides elastic restoring force for the telescopic movement of the column 13. When the telescopic column 13 is compressed or stretched by an external force, the spring 14 stores or releases elastic potential energy, assisting the movement of the column 13 and providing buffering and shock absorption during device operation. A connecting ring 12 is fixedly connected to the top of each telescopic column 13, connecting and integrating the tops of the columns so they can work together. Multiple push blocks 11 are fixedly connected to the bottom of the connecting ring 12. The push blocks 11 move when the connecting ring 12 moves up and down under the influence of the telescopic columns 13. A stabilizing component is fixedly connected to the top of the base plate 1.

[0028] Reference Figures 3 to 5 The stabilizing assembly includes multiple telescopic shells 3, the bottom ends of which are fixedly connected to the top of the base plate 1. The telescopic shells 3 transmit forces from the upper components to the base plate 1, while also ensuring their own stability during operation, preventing displacement due to external forces. Vibration damping pads 15 are fixedly connected to the bottom of the inner walls of each telescopic shell 3. When the device is subjected to vibration or impact, these pads absorb some energy, reducing the transmission of vibration to other components. The stabilizing assembly begins to buffer vibration from the bottom, effectively reducing the risk of damage to the precision components inside the device and improving the smoothness of device operation.

[0029] Multiple damping pads 15 are fixedly connected to their top ends with damping columns 16. When the device vibrates, the internal friction and deformation of the damping material dissipate the mechanical energy of the vibration into heat and other forms of energy, thereby further attenuating the vibration amplitude. A second damping pad 18 is fixedly connected to the top end of each damping column 16, ensuring its stability. The second damping pad 18 acts as a secondary buffer in the entire stabilizing assembly. When the vibration attenuated by the damping column 16 reaches this point, the second damping pad 18 again absorbs and buffers the remaining vibration energy using its elasticity, further reducing the impact of vibration on the upper components and providing more comprehensive and reliable vibration protection for the device. Each damping column 16 is externally fitted with a third spring 17.

[0030] When the device is subjected to vibration, spring 3 17 will expand and contract along with the movement of damping column 16. On the one hand, it assists the damping column 16 in its work, enhancing its absorption and buffering effect on vibration; on the other hand, the elasticity of spring 3 17 itself can also absorb some vibration energy. After the vibration ends, the elastic restoring force of spring 3 17 can help damping column 16 quickly return to its initial position, preparing for the next possible vibration impact, thereby continuously ensuring the efficient operation of the stabilizing components.

[0031] Reference Figures 1 to 3 The bottom ends of multiple connecting plates 5 are slidably connected to the inside of the limiting ring 7, and the outer sides of the multiple connecting plates 5 are fixedly connected to the outer sides of multiple springs 9. When the device is subjected to external force, the springs 9 can undergo elastic deformation to absorb and buffer part of the impact force. The outer sides of the multiple connecting plates 5 are fixedly connected to the outer sides of multiple telescopic columns 8. When the device needs to adjust the position of components or adapt to different working heights, the telescopic columns 8 can extend or shorten as needed. The fixed connection with the connecting plates 5 allows the telescopic columns 8 to drive the connecting plates 5 to move synchronously during movement, thereby realizing the position adjustment of other components connected to them.

[0032] Multiple springs 9 are slidably connected to the inside of the limiting ring 7. The internal space of the limiting ring 7 provides a sliding track for the springs 9. During sliding, the springs 9 maintain their elastic deformation function, and under the constraint of the limiting ring 7, their movement direction is regulated and will not deviate arbitrarily. Multiple push blocks 11 are slidably connected to the inner walls of multiple latches 10 on adjacent sides. When the connecting ring 12 moves the push blocks 11, the push blocks 11 can slide on the inner walls of the latches 10, thereby controlling the state of the latches 10. The tops of multiple springs 14 are fixedly connected to the bottom of the connecting ring 12. Their main function is to provide elastic support for the connecting ring 12.

[0033] When the connecting ring 12 is subjected to external force, the second spring 14 will undergo elastic deformation, absorbing and buffering part of the external force. The bottom ends of multiple second springs 14 are fixedly connected to the top end of the limiting ring 7. When the connecting ring 12 moves up and down under the action of the second spring 14, the limiting ring 7 can ensure that the position of the second spring 14 is relatively fixed and will not be displaced. The top end of the outer shell 2 is fixedly connected to the top end of the top cover 19. The main function of the top cover 19 is to seal and protect the top of the device, preventing dust, impurities, foreign objects, etc. from entering the device from the top. The bottom end of the top cover 19 is fixedly connected to the top end of the filter screen 21, and the bottom end of the filter screen 21 is fixedly connected to the top end of the base plate 1. The base plate 1 serves as the basic support component of the device, providing reliable support for the filter screen 21. Multiple telescopic shells 20 are fixedly connected to the bottom end of the base plate 1.

[0034] The function of telescopic shell 20 is similar to that of telescopic shell 3, providing additional support and adjustment capabilities for the device. Spring 3 17 is externally slidably connected to the inner wall of telescopic shell 3. When the device is subjected to vibration or impact, spring 3 17 will expand and contract, assisting damping column 16 in absorbing and buffering vibration energy. Vibration damping pad 15 is externally fixedly connected to the inner wall of telescopic shell 3. When the device is subjected to vibration, vibration damping pad 15 can buffer the vibration, reducing the transmission of vibration to other components inside telescopic shell 3. The bottom end of vibration damping pad 15 is fixedly connected to the top end of base plate 1. When base plate 1 is subjected to vibration from the ground or other external environments, vibration damping pad 15 can function promptly, absorbing and buffering vibration energy through its own elastic deformation, preventing the vibration from being transmitted upwards to other components of the device. Vibration damping pad 2 18 is externally slidably connected to the inner wall of telescopic shell 3.

[0035] When the device is subjected to vibration, the damping column 16 will move, causing the vibration damping pad 18 to slide on the inner wall of the telescopic shell 3. During this process, the vibration damping pad 18 uses its own elasticity to absorb and buffer the remaining vibration energy after it has been attenuated by the damping column 16.

[0036] Working principle: When filter screen 21 needs to be replaced, it is secured inside the outer casing 2 by a locking block 4. The connecting plate 5 connected to the locking block 4 slides within the limiting ring 7 via a rotating shaft 6. When the filter screen needs to be replaced, the connecting ring 12 drives the telescopic column 13 and the push block 11 to move. The push block 11 pushes the buckle 10, causing the connecting plate 5 to overcome the elastic force of the spring 9 and drive the telescopic column 8 to move, thereby disengaging the locking block 4 from the filter screen 21, thus enabling filter screen replacement. This facilitates convenient filter screen replacement and ensures continuous and efficient operation of the equipment.

[0037] When the equipment vibrates, the telescopic shell 3 drives the internal vibration damping pad 15, damping column 16, and spring 3 17 to move. The vibration damping pad 15 first buffers part of the vibration, the damping column 16 moves up and down under the elastic action of spring 3 17 to further dissipate the vibration energy, and finally the vibration damping pad 2 18 at the top of the damping column 16 further weakens the remaining vibration. This achieves stable vibration reduction, reduces vibration and shaking during equipment operation, extends the service life of the equipment, and ensures stable operation of the equipment.

[0038] 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 filter mat for an airbag comprising a base sheet (1), characterized in that: A shell (2) is fixedly connected to the top of the base plate (1). A filter screen (21) is fixedly connected to the inner wall of the shell (2). Multiple locking blocks (4) are fixedly connected inside the filter screen (21). A connecting plate (5) is fixedly connected to the bottom of each locking block (4). A rotating shaft (6) is fixedly connected to the bottom of the connecting plate (5). Limiting rings (7) are fixedly connected to the outer ends of both ends of the rotating shaft (6). A telescopic column (8) is fixedly connected inside the limiting ring (7). The outer surface of the plate is fitted with a spring (9), and a buckle (10) is fixedly connected to the adjacent side of the multiple connecting plates (5). The top end of the limiting ring (7) is fixedly connected with multiple telescopic columns (13), and the outer surface of the multiple telescopic columns (13) is fitted with a spring (14). The top end of the multiple telescopic columns (13) is fixedly connected with a connecting ring (12), and the bottom end of the connecting ring (12) is fixedly connected with multiple push blocks (11). The top end of the base plate (1) is fixedly connected with a stabilizing component for stability.

2. The filter pad for an airbag according to claim 1, wherein: The stabilizing component includes multiple telescopic shells (3), the bottom ends of the multiple telescopic shells (3) are fixedly connected to the top of the base plate (1), the bottom ends of the inner walls of the multiple telescopic shells (3) are all fixedly connected to damping pads (15), the top ends of the multiple damping pads (15) are respectively fixedly connected to damping columns (16), the top ends of the damping columns (16) are fixedly connected to damping pads (2) (18), and the outside of the multiple damping columns (16) is fitted with springs (3) (17).

3. The filter mat for an airbag according to claim 1, wherein: The bottom ends of the multiple connecting plates (5) are slidably connected to the inside of the limiting ring (7), and the outer sides of the multiple connecting plates (5) are fixedly connected to the outer sides of the multiple springs (9).

4. The filter mat for an airbag according to claim 1, wherein: The adjacent sides of the multiple connecting plates (5) are fixedly connected to the distant sides of the multiple telescopic columns (8), and the exterior of the multiple springs (9) are all slidably connected to the interior of the limiting ring (7).

5. The filter mat for an airbag according to claim 1, wherein: The outer sides of the multiple push blocks (11) are slidably connected to the inner walls of the multiple buckles (10), and the top ends of the multiple springs (14) are fixedly connected to the bottom end of the connecting ring (12).

6. The filter mat for an airbag according to claim 1, wherein: The bottom ends of the multiple springs (14) are fixedly connected to the top end of the limiting ring (7), and the top end of the outer shell (2) is fixedly connected to the top cover (19).

7. The filter mat for an airbag according to claim 6, wherein: The bottom end of the top cover (19) is fixedly connected to the top end of the filter screen (21), the bottom end of the filter screen (21) is fixedly connected to the top end of the base plate (1), and the bottom end of the base plate (1) is fixedly connected to a plurality of telescopic shells (20).

8. The filter mat for an airbag according to claim 2, wherein: The outer side of the third spring (17) is slidably connected to the inner wall of the first telescopic shell (3), the outer side of the first damping pad (15) is fixedly connected to the inner wall of the first telescopic shell (3), the bottom end of the first damping pad (15) is fixedly connected to the top end of the base plate (1), and the outer side of the second damping pad (18) is slidably connected to the inner wall of the first telescopic shell (3).

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