High-utilization-rate steel plate rolled net for gas generator

Abstract

The utility model discloses a high-utilization-rate steel plate rolled net for a gas generator, and aims to provide the high-utilization-rate steel plate rolled net for the gas generator, wherein the utilization rate is improved by increasing a gap between a filter net and a pipeline. The device comprises a pipeline and a filter screen, the filter screen is arranged in the pipeline and at one end of the pipeline, gap protrusions are arranged at the two ends of the filter screen and installed on the outer side face of the filter screen, the other ends of the gap protrusions make contact with the inner wall of the pipeline, a limiting assembly is installed in the pipeline, and the limiting assembly is connected with the pipeline. The limiting assembly is in contact with the filter screen, and a taking and placing assembly is installed at one end of the filter screen. The filter screen has the advantages that the utilization rate is increased by increasing the gap between the filter screen and the pipeline, the stability of the filter screen in the pipeline is improved, the position of the filter screen can be limited, the filter screen can be fixed, the filter screen is convenient to move, and the handle ring can be fixed.

Description

Technical Field

[0001] The utility model relates to the technical field related to gas generators, in particular to a high-utilization steel plate rolled net for gas generators. Background Art

[0002] In automotive airbag systems, the inflator rapidly generates gas to inflate the airbag in the event of a collision, providing protection for the driver and passengers. Existing rolled steel mesh in most generators has direct contact between the outer diameter of the mesh and the inner wall of the tube. As a result, when the generator is operating, the mesh is only utilized in a small area near the tube outlet, not the entire area. Consequently, the actual filter utilization, such as cooling effectiveness and debris capture, is very low.

[0003] China Patent Authorization Announcement No.: CN208452945U, authorization announcement date February 1, 2019, discloses a new type of airbag gas generator filter, including a filter ring, a first fixing cover and a second fixing cover, the filter ring is cylindrical, the first fixing cover and the second fixing cover are respectively installed on the top and bottom of the filter ring, the first fixing cover is fixedly connected to the filter ring, and the second fixing cover is fixedly connected to the filter ring. The filter ring consists of a first filter screen, a second filter screen, a thermal insulation layer and an air guide ring, the first filter screen is located on the outer wall of the filter ring, the air guide ring is located on the inner side of the first filter screen, and the air guide ring is fixedly connected to the first filter screen, the thermal insulation layer is installed on the inner side of the air guide ring, and the thermal insulation layer is fixedly connected to the air guide ring, the second filter screen is located on the inner side of the thermal insulation layer, and the second filter screen is fixedly connected to the thermal insulation layer. The shortcoming of this utility model is that the filter ring of the filter screen is cylindrical, and the cylindrical filter screen is attached to the inner wall of the pipe, so the utilization rate of such a filter screen during use is limited. Utility Model Content

[0004] The utility model aims to overcome the shortcoming of low utilization rate of the filter screen fitted with the pipeline in the prior art during use, and provides a high-utilization steel plate rolled mesh for a gas generator, which improves utilization rate by increasing the gap between the filter screen and the pipeline.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A high-utilization steel plate rolled net for a gas generator includes a pipe and a filter screen. The filter screen is placed in the pipe and at one end of the pipe. Both ends of the filter screen are provided with gap protrusions. The gap protrusions are installed on the outer surface of the filter screen. The other end of the gap protrusion contacts the inner wall of the pipe. A limiting component is installed in the pipe, and the limiting component contacts the filter screen. A pick-up and placement component is installed at one end of the filter screen.

[0007] The filter body is inside the pipeline, and filtering is performed through a filter installed in the pipeline. The filter is made of a grid-shaped steel plate. In order to ensure the gap between the pipeline and the filter, a gap protrusion is installed on the surface of the filter, and the top of the gap protrusion contacts the inner wall of the pipeline. When the filter is installed inside the generator pipeline, the gap protrusion on the filter is in direct contact with the inner wall of the pipeline, and there is a gap protrusion between the outer wall of the filter and the inner wall of the pipeline. When the generator is detonated, due to the existence of the gap between the filter and the inner wall of the pipeline, the high-temperature and high-pressure gas can flow out from the area except the gap protrusion, which greatly improves the utilization rate of the filter. At the same time, in order to ensure a tight connection between the pipeline and the filter, a limit assembly is installed in the pipeline to contact the filter to limit the position of the filter in the pipeline. At the same time, a pick-up and place assembly is installed at one end of the filter. The pick-up and place assembly is used to install the filter, thereby improving the portability of the filter installation process and achieving the purpose of increasing the utilization rate by increasing the gap between the filter and the pipeline.

[0008] Preferably, the filter screen is cylindrical in shape, the cross-section of the clearance protrusion is semicircular, and a plurality of clearance protrusions are installed at both ends of the filter screen in a circumferentially distributed manner. Installing the clearance protrusions at both ends of the filter screen ensures that there is a gap between both ends of the filter screen and the pipeline, which can also improve the stability of the filter screen within the pipeline. At the same time, the plurality of clearance protrusions are provided and distributed in a circumferential manner to ensure that the distance between the surface of the filter screen and the inner wall of the pipeline is consistent, so that the filter screen and the pipeline are concentric. This design improves the stability of the filter screen within the pipeline.

[0009] Preferably, the position limiting assembly includes a plurality of baffles, each of which is provided and distributed circumferentially. The baffles are mounted on the inner wall of the pipe, with one side of the baffle contacting one end surface of the filter screen. The position limiting assembly includes a plurality of baffles, each of which is evenly distributed on the inner wall of the pipe. When the filter screen is placed, one end of the filter screen contacts the baffle to limit the position of the filter screen within the pipe. This design can limit the position of the filter screen.

[0010] Preferably, the baffle is provided with a fixing groove, and a plurality of inserts are installed at the end of the filter screen that contacts the baffle. The inserts correspond one-to-one with the baffle, and one end of the insert is connected to the filter screen. The other end of the insert passes through the fixing groove and is placed on the other side of the baffle. A fixing plate is installed at the end of the insert that passes through the fixing groove, and the fixing plate contacts the baffle. The fixing grooves provided on the limit plate correspond one-to-one with the inserts installed on the filter screen. When one end of the filter screen contacts the baffle, the insert is screwed into the fixing groove by rotating the filter screen. At the same time, the fixing plate on the insert contacts the baffle, fixing the position of the filter screen. This design can prevent the filter screen from moving and can fix the filter screen.

[0011] Preferably, the pick-and-place assembly includes a handle ring, and connecting blocks are installed on the upper and lower sides of the filter, and the connecting blocks are installed on the inner wall of the filter. Both sides of the filter are provided with handle rings, and the carrying handle rings are placed inside the filter. The cross-section of the handle ring is arc-shaped, and the two ends of the handle ring are rotatably connected to the connecting blocks on both sides. The pick-and-place assembly is installed at the end of the filter away from the fixed plate. In order to facilitate the rotation of the filter and the placement of the filter in a specified position, a connecting block is installed on the inner wall of the filter. Two connecting blocks are provided and are respectively placed on both sides of the filter. Two handle rings are installed in the filter, and the two ends of the handle ring are rotatably connected to the connecting blocks. The two handle rings are brought into contact by rotating the handle ring, so that the filter can be moved by the handle ring. The handle ring is semicircular and can be rotated to the outside of the filter for picking up. Such a design facilitates the movement of the filter.

[0012] Preferably, locking blocks are installed on both sides of the filter screen. The locking blocks are mounted on the inner wall of the filter screen and have locking grooves formed therein. One side of the handle loop is positioned within the locking grooves and matches the locking grooves. Since the handle loop is rotatably connected to the connecting block, the handle loop may wobble within the filter screen. To prevent this wobble, a locking block is installed on each side of the inner wall of the filter screen. The locking blocks correspond to the handle loop. Pressing one side of the handle loop into the locking grooves of the locking blocks restricts the position of the handle loop, thereby securing the handle loop.

[0013] The beneficial effects of the utility model are: increasing the gap between the filter screen and the pipeline to improve the utilization rate, improving the stability of the filter screen in the pipeline, limiting the position of the filter screen, fixing the filter screen, facilitating the movement of the filter screen, and fixing the handle ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 yes Figure 1 sectional view of

[0016] Figure 3 yes Figure 1 Schematic diagram of the pipeline structure;

[0017] Figure 4 yes Figure 1 Schematic diagram of the structure of the middle filter.

[0018] In the figure: 1. Pipe; 2. Filter; 3. Gap protrusion; 4. Limit assembly; 5. Pick-up and drop assembly; 6. Baffle; 7. Fixing groove; 8. Insert plate; 9. Fixing plate; 10. Connecting block; 11. Handle ring; 12. Locking block; 13. Locking groove. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] like Figure 1 、 Figure 2 In the embodiment shown, a high-utilization steel plate rolled mesh for a gas generator includes a pipe 1 and a filter screen 2. The filter screen 2 is placed in the pipe 1 and at one end of the pipe 1. Both ends of the filter screen 2 are provided with gap protrusions 3. The gap protrusions 3 are installed on the outer surface of the filter screen 2. The other end of the gap protrusion 3 contacts the inner wall of the pipe 1. A limiting component 4 is installed in the pipe 1. The limiting component 4 contacts the filter screen 2. A pick-up and placement component 5 is installed at one end of the filter screen 2.

[0021] The filter screen 2 is cylindrical in shape, and the cross-section of the gap protrusion 3 is semicircular. A plurality of gap protrusions 3 distributed in a circumference are installed at both ends of the filter screen 2 .

[0022] like Figure 3 As shown, the limiting assembly 4 includes a baffle 6 , which is provided in a plurality and distributed in a circumferential manner. The baffle 6 is installed on the inner wall of the pipe 1 , and one side of the baffle 6 contacts one end surface of the filter screen 2 .

[0023] like Figure 4 As shown, a fixing groove 7 is provided on the baffle 6, and a plurality of plug-ins 8 are installed on the end of the filter screen 2 that contacts the baffle 6. The plug-ins 8 correspond to the baffle 6 one by one. One end of the plug-in plate 8 is connected to the filter screen 2, and the other end of the plug-in plate 8 passes through the fixing groove 7 and is placed on the other side of the baffle 6. A fixing plate 9 is installed on the end of the plug-in plate 8 that passes through the fixing groove 7, and the fixing plate 9 contacts the baffle 6.

[0024] The picking and placing component 5 includes a handle ring 11, and connecting blocks 10 are installed on the upper and lower sides of the filter 2. The connecting blocks 10 are installed on the inner wall of the filter 2. Handle rings 11 are provided on both sides of the filter 2. The handle rings 11 are placed in the filter 2. The cross-section of the handle ring 11 is arc-shaped, and the two ends of the handle ring 11 are rotatably connected to the connecting blocks 10 on both sides.

[0025] Locking blocks 12 are installed on both sides of the filter 2. The locking blocks 12 are installed on the inner wall of the filter 2. A locking groove 13 is provided on the locking block 12. One side of the handle ring 11 is placed in the locking groove 13 and matches the locking groove 13.

[0026] When installing the filter, rotate the handle ring 11 to contact the handle rings 11 on both sides, and then push the filter 2 into the pipe 1. The gap protrusion 3 contacts the inner wall of the pipe 1, forming a gap between the pipe 1 and the filter 2. The filter 2 moves in the pipe 1 until it contacts the baffle 6. Then, by rotating the filter 2, the insert plate 8 is screwed into the fixing groove 7. At the same time, the fixing plate 9 on the insert plate 8 contacts the baffle 6, fixing the position of the filter 2. After the position of the filter 2 is fixed, rotate the handle ring 11 and press one side of the handle ring 11 into the locking groove 13 of the locking block 12 to fix it, completing the installation of the filter 2.

[0027] When the filter 1 is installed inside the generator pipe 1, the gap protrusion 3 on the filter 2 is in direct contact with the inner wall of the pipe 1, and there is a distance of gap protrusion 3 between the outer wall of the filter 2 and the inner wall of the pipe 1. When the generator is detonated, due to the existence of the gap between the filter 2 and the inner wall of the pipe 1, the high-temperature and high-pressure gas can flow out from the area except the gap protrusion 3, which greatly improves the utilization rate of the filter.

Claims

1. A high-utilization steel plate rolled net for a gas generator, characterized in that: The invention comprises a pipe (1) and a filter (2), wherein the filter (2) is placed in the pipe (1) and at one end of the pipe (1), and both ends of the filter (2) are provided with a gap protrusion (3), wherein the gap protrusion (3) is installed on the outer surface of the filter (2), and the other end of the gap protrusion (3) contacts the inner wall of the pipe (1), and a limiting component (4) is installed in the pipe (1), wherein the limiting component (4) contacts the filter (2), and a pick-up and placement component (5) is installed at one end of the filter (2).

2. The high-utilization steel plate rolled net for gas generator according to claim 1, characterized in that: The filter screen (2) is cylindrical in shape, the cross-section of the gap protrusion (3) is semicircular, and a plurality of circumferentially distributed gap protrusions (3) are installed at both ends of the filter screen (2).

3. The high-utilization steel plate rolled net for gas generator according to claim 1, characterized in that: The limiting assembly (4) includes a baffle (6), wherein a plurality of baffles (6) are provided and distributed in a circumferential manner, and the baffles (6) are installed on the inner wall of the pipe (1), and one side of the baffle (6) contacts an end surface of the filter screen (2).

4. The high-utilization steel plate rolled net for gas generator according to claim 3, characterized in that: The baffle (6) is provided with a fixing groove (7), and a plurality of plug-ins (8) are installed at one end of the filter (2) in contact with the baffle (6), and the plug-ins (8) correspond to the baffle (6) one-to-one. One end of the plug-in (8) is connected to the filter (2), and the other end of the plug-in (8) passes through the fixing groove (7) and is placed on the other side of the baffle (6). A fixing plate (9) is installed at one end of the plug-in (8) passing through the fixing groove (7), and the fixing plate (9) contacts the baffle (6).

5. The high-utilization steel plate rolled net for gas generator according to claim 1, characterized in that: The pick-and-place assembly (5) includes a handle ring (11), and connecting blocks (10) are installed on the upper and lower sides of the filter (2). The connecting blocks (10) are installed on the inner wall of the filter (2). Handle rings (11) are provided on both sides of the filter (2). The handle rings (11) are placed in the filter (2). The cross-section of the handle ring (11) is arc-shaped, and the two ends of the handle ring (11) are rotatably connected to the connecting blocks (10) on both sides.

6. The high-utilization steel plate rolled net for gas generator according to claim 5, characterized in that: Locking blocks (12) are installed on both the left and right sides of the filter (2). The locking blocks (12) are installed on the inner wall of the filter (2). A locking groove (13) is provided on the locking block (12). One side of the handle ring (11) is placed in the locking groove (13) and matches the locking groove (13).

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