Rectifier structure for gas generator

Abstract

The utility model discloses a rectifier structure for a gas generator, and aims to provide the rectifier structure for the gas generator, which is good in rectification effect, reduces the internal pressure of a combustion chamber and improves the filtering effect. Comprising a rectifying shell connected with a combustion chamber of the gas generator, and a plurality of rectifying holes are formed in the side wall of the rectifying shell; the filtering frame is installed in the rectifying shell in a sliding mode, and a filtering net is installed on the filtering frame; the rectifying filter disc is arranged in the rectifying hole, and a filtering hole is formed in the middle of the rectifying filter disc. The utility model has the beneficial effects that the filter screen arranged on the filter frame and the rectification filter disc arranged in the rectification hole can rectify the gas and simultaneously filter gunpowder residues, so that the filtering effect is improved, and the internal pressure of the combustion chamber can be synchronously reduced; installation is convenient and simple, and stability is good.

Description

Technical Field

[0001] The utility model relates to the technical field related to gas generators, in particular to a rectifier structure for a gas generator. Background Art

[0002] The airbag inflator is a key component in a car's airbag system. Its primary function is to rapidly generate a large amount of gas during a collision, causing the airbag to inflate quickly, providing cushioning protection for the vehicle's occupants and mitigating any potential damage.

[0003] Existing filters installed in gas generators typically filter debris, or both filter debris and adjust the airflow path, as well as cool the gas temperature. Reducing internal pressure is typically achieved by increasing the size of the filter to ensure sufficient clearance. However, filters are typically not installed within the combustion chamber. Instead, internal pressure is reduced by the size, composition, and separate components of the gunpowder. To ensure this reduction in combustion chamber pressure, structural improvements are required. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art in that the rectifying and filtering effect is poor and the internal pressure of the combustion chamber is high, and provides a rectifier structure for a gas generator which has good rectifying effect, reduces the internal pressure of the combustion chamber and improves the filtering effect.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a rectifier structure for a gas generator, comprising:

[0006] A fairing housing connected to the combustion chamber of the gas generator, wherein a side wall of the fairing housing is provided with a plurality of fairing holes;

[0007] A filter frame is slidably mounted inside the rectifier housing, and a filter screen is mounted on the filter frame;

[0008] The rectifying filter is arranged in the rectifying hole, and a filtering hole is arranged in the middle of the rectifying filter.

[0009] The rectifier structure includes a rectifier housing, a filter frame, and a rectifier filter disc, wherein the rectifier housing is mounted to the gas outlet of the combustion chamber of the gas generator by means of a snap-on or threaded connection. A filter screen is mounted on the filter frame, which is mounted inside the rectifier housing. The filter screen is used to filter the residue after the gunpowder combustion and redirect the airflow, thereby changing the outlet speed to protect and reduce the impact on the airbag, thereby improving the use effect. At the same time, a number of rectifier holes are provided on the rectifier housing, and a rectifier filter disc is provided inside the rectifier hole. A filter hole is provided in the middle of the rectifier filter disc, and the filter hole can change the airflow direction when the gas is discharged from the rectifier hole. At the same time, the outlet speed is changed to protect and reduce the impact on the airbag, thereby improving the use effect and having a certain improvement in the filtering effect on the gunpowder residue.

[0010] Preferably, the fairing housing has a conical structure, with a mounting sleeve mounted at the end thereof. The mounting sleeve is sleeved with the combustion chamber of the gas generator, and a plurality of rectifier holes are evenly spaced. The conical shape of the fairing housing facilitates the convergence of gases generated by the combustion of the gunpowder, ensuring gas production efficiency. The mounting sleeve is mounted at the end of the fairing housing, and threads can be provided within the mounting sleeve to achieve a threaded connection with the combustion chamber of the gas generator, or to securely engage the fairing housing with the combustion chamber of the gas generator via an interference fit, thereby ensuring effective and stable installation.

[0011] Preferably, a stabilizing bar is provided in the middle of the filter frame, and a plurality of equally spaced cross bars are mounted on the sidewalls of the stabilizing bar, the lengths of the cross bars decreasing from top to bottom. The inner sidewalls of the fairing housing are provided with mounting grooves, into which the cross bars snap. The stabilizing bar in the middle of the filter frame is mounted with a plurality of equally spaced cross bars, the lengths of the cross bars decreasing from bottom to bottom, forming a stepped pattern. Furthermore, mounting grooves are provided on the inner wall of the fairing housing to guide the sliding installation of the cross bars during installation of the filter frame, thereby ensuring the stability of the filter frame and facilitating easy installation.

[0012] Preferably, a limit block is installed at the upper end of the mounting groove, and the limit block contacts the cross bar at the upper end. The limit block installed in the mounting groove can limit the cross bar and ensure the stable installation of the filter rack.

[0013] Preferably, the end of the limit block is an arc-shaped surface. The end of the limit block is an arc-shaped surface. This structure can facilitate the clamping of the cross bar when installing the filter frame, thereby ensuring its installation stability.

[0014] Preferably, the bottom surface of the fairing housing is provided with a clamping hole, and the stabilizing rod is plugged into the clamping hole. The stabilizing rod is inserted into the clamping groove provided on the bottom surface of the fairing housing, thereby ensuring the stable installation of the filter frame, making it convenient to install and stable after installation.

[0015] Preferably, the filter is installed between two adjacent crossbars. The filter is installed between two longitudinally adjacent crossbars to block the gunpowder residue after the explosion and perform a primary filtration function. Furthermore, the longitudinally arranged filter can rectify the gas generated by the combustion of the gunpowder. When the gas is discharged from the rectifying hole, the gas is rectified, thereby changing the gas outlet velocity to protect and reduce the impact on the airbag, thereby improving the use effect.

[0016] Preferably, the rectifying filter comprises a central piece, a plurality of mounting pieces are provided on the side wall of the central piece, the mounting pieces are arranged at an obtuse angle to the central piece, the mounting pieces are connected to the inner wall of the rectifying hole, the filter hole is provided in the middle of the central piece, and a plurality of hanging pins are provided on the inner side surface of the mounting piece. The rectifying filter comprises a central piece, the filter hole is provided in the middle of the central piece, and the structure can rectify and filter the gas production, filter the gunpowder residue and redirect the airflow at the same time, change the gas outlet speed to achieve the function of protecting and reducing the impact on the air bag, and improve the use effect; at the same time, a plurality of mounting pieces are provided at the edge of the central piece, the mounting pieces are connected to the inner wall of the rectifying hole, and a clearance hole is formed between adjacent mounting pieces, which is used for gas discharge. At the same time, the hanging pins installed on the inner side surface of the mounting piece can filter the gunpowder residue to ensure its filtering effect.

[0017] The beneficial effects of the utility model are as follows: the filter screen installed on the filter frame and the rectifying filter installed in the rectifying hole can rectify the gas and filter the gunpowder residue at the same time, thereby improving the filtering effect and reducing the internal pressure of the combustion chamber at the same time; the installation is convenient and simple, and the stability is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional view of the utility model;

[0019] Figure 2 It is a cross-sectional view of the utility model;

[0020] Figure 3 yes Figure 2 Enlarged view at point A in the middle;

[0021] Figure 4 It is a cross-sectional view of the rectifying hole in the utility model.

[0022] In the attached figure, 1. rectifier housing, 2. filter frame, 3. rectifier filter, 10. rectifier hole, 11. mounting sleeve, 12. mounting slot, 13. limit block, 14. clamping hole, 20. filter screen, 21. stabilizer bar, 22. cross bar, 30. filter hole, 31. center plate, 32. mounting plate, 33. hanging pin. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the embodiments described are only some of the embodiments of this application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present application, its application, or use. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0026] Example 1, as Figure 1-4 As shown, a rectifier structure for a gas generator includes:

[0027] A rectifier housing 1 is connected to the combustion chamber of the gas generator, and a plurality of rectifier holes 10 are provided on the side wall of the rectifier housing 1; a filter frame 2 is slidably mounted inside the rectifier housing 1, and a filter screen 20 is mounted on the filter frame 2;

[0028] The rectifying filter 3 is arranged in the rectifying hole 10 , and a filtering hole 30 is arranged in the middle of the rectifying filter 3 .

[0029] The fairing housing 1 is a conical structure. A mounting sleeve 11 is mounted on the end of the fairing housing 1. The mounting sleeve 11 is sleeved with the combustion chamber of the gas generator. A plurality of fairing holes 10 are evenly arranged at equal intervals.

[0030] A stabilizing rod 21 is provided in the middle of the filter frame 2, and a plurality of equally spaced cross bars 22 are installed on the side walls of the stabilizing rod 21. The lengths of the cross bars 22 become shorter from top to bottom. A mounting groove 12 is provided on the inner side wall of the fairing housing 1, and the cross bars 22 are inserted into the mounting groove 12.

[0031] A limit block 13 is installed at the upper end of the installation groove 12 , and the limit block 13 contacts the cross bar 22 disposed at the upper end.

[0032] The end of the limiting block 13 is an arc-shaped surface.

[0033] A clamping hole 14 is provided on the bottom surface of the fairing housing 1 , and the stabilizing rod 21 is plugged into the clamping hole 14 .

[0034] The filter screen 20 is installed between two adjacent cross bars 22 .

[0035] The rectifying filter 3 includes a central piece 31, and a plurality of mounting pieces 32 are provided on the side wall of the central piece 31. The mounting pieces 32 are arranged at an obtuse angle to the central piece 31. The mounting pieces 32 are connected to the inner wall of the rectifying hole 10. The filter hole 30 is provided in the middle of the central piece 31, and a plurality of hanging pins 33 are provided on the inner side of the mounting piece 32.

[0036] The working principle of this utility model is as follows: Figure 1-4 As shown, the rectifier structure includes a rectifier housing 1, a filter frame 2, and a rectifier filter 3, wherein the rectifier housing 1 is mounted to the gas outlet of the combustion chamber of the gas generator by means of a snap-on or threaded connection. A filter screen 20 is mounted on the filter frame 2, which is mounted inside the rectifier housing 1. The filter screen 20 is used to filter the residue after the gunpowder combustion and to redirect the airflow, thereby changing the outlet speed to protect and reduce the impact on the airbag, thereby improving the use effect. At the same time, a number of rectifier holes 10 are provided on the rectifier housing 1, and a rectifier filter 3 is provided inside the rectifier hole 10. A filter hole 30 is provided in the middle of the rectifier filter 3. The filter hole 30 can change the airflow direction when the gas is discharged from the rectifier hole 10, and at the same time, change the outlet speed to protect and reduce the impact on the airbag, thereby improving the use effect and having a certain improvement in the filtering effect of the gunpowder residue.

[0037] The rectifier shell 1 is conical, and this structure can facilitate the convergence of the gas generated by the combustion of gunpowder and ensure the gas production efficiency. A mounting sleeve 11 is provided at the end of the rectifier shell 1, and a thread can be provided inside the mounting sleeve 11 to achieve a threaded connection with the combustion chamber of the gas generator through a threaded connection, or the rectifier shell 1 is clamped and sleeved with the combustion chamber of the gas generator through an interference fit to ensure its installation effect and achieve stable installation.

[0038] A plurality of cross bars 22 are installed on the stabilizing bar 21 in the middle of the filter frame 2. The cross bars 22 are arranged at equal intervals. At the same time, the lengths of the cross bars 22 gradually shorten from bottom to bottom, forming a stepped shape. At the same time, a mounting groove 12 is provided on the inner wall of the rectifier housing 1. The mounting groove 12 serves to guide the sliding installation of the cross bars 22 when installing the filter frame 2, thereby ensuring the stability of the filter frame 2 and ensuring convenient installation operation.

[0039] The limiting block 13 is installed inside the installation groove 12 to limit the cross bar 22 and ensure the stable installation of the filter frame 2.

[0040] The end of the limiting block 13 is an arc-shaped surface. This structure facilitates the clamping of the cross bar 22 when installing the filter frame 2, thereby ensuring the stability of its installation.

[0041] The filter 20 is installed between two longitudinally adjacent cross bars 22. Its function is to ensure the blocking of gunpowder residue after the explosion and play a role of primary filtering. At the same time, the longitudinally arranged filter 20 can rectify the gas generated by the combustion of gunpowder. When the gas is discharged from the rectifying hole 10, the gas is rectified to achieve the function of changing the gas outlet speed to protect and reduce the impact on the air bag, thereby improving the use effect.

[0042] Among them, the rectifying filter 3 includes a central piece 31, and the filter hole 30 is installed in the middle of the central piece 31. This structure can rectify and filter the produced gas, filter the gunpowder residue while realizing the airflow redirection, and change the gas outlet speed to achieve the function of protecting and reducing the impact on the air bag, thereby improving the use effect; at the same time, a number of mounting pieces 32 are provided at the edge of the central piece 31, and the mounting pieces 32 are connected to the inner wall of the rectifying hole 10, and a clearance hole is formed between adjacent mounting pieces 32, which is used for gas discharge. At the same time, the hanging needle 33 installed on the inner side surface of the mounting piece 32 can filter the gunpowder residue to ensure its filtering effect.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rectifier structure for a gas generator, characterized in that: include: A rectification housing (1) connected to the combustion chamber of the gas generator, wherein a side wall of the rectification housing (1) is provided with a plurality of rectification holes (10); A filter frame (2) is slidably mounted inside the rectifier housing (1), and a filter screen (20) is mounted on the filter frame (2); A rectifying filter (3) is arranged in the rectifying hole (10), and a filtering hole (30) is provided in the middle of the rectifying filter (3).

2. A rectifier structure for a gas generator according to claim 1, characterized in that: The fairing housing (1) is a conical structure. A mounting sleeve (11) is mounted on the end of the fairing housing (1). The mounting sleeve (11) is sleeved with the combustion chamber of the gas generator. A plurality of fairing holes (10) are evenly arranged at equal intervals.

3. A rectifier structure for a gas generator according to claim 1, characterized in that: A stabilizing rod (21) is provided in the middle of the filter frame (2), and a plurality of equally spaced crossbars (22) are installed on the side wall of the stabilizing rod (21), wherein the lengths of the crossbars (22) decrease from top to bottom. A mounting groove (12) is provided on the inner side wall of the rectifier housing (1), and the crossbar (22) is inserted into the mounting groove (12).

4. A rectifier structure for a gas generator according to claim 3, characterized in that: A limit block (13) is installed at the upper end of the interior of the installation slot (12), and the limit block (13) is in contact with a cross bar (22) disposed at the upper end.

5. A rectifier structure for a gas generator according to claim 4, characterized in that: The end of the limiting block (13) is an arc-shaped surface.

6. A rectifier structure for a gas generator according to claim 3, characterized in that: The bottom surface of the rectifier housing (1) is provided with a clamping hole (14), and the stabilizing rod (21) is plugged into the clamping hole (14).

7. A rectifier structure for a gas generator according to claim 1, characterized in that: The filter screen (20) is installed between two adjacent cross bars (22).

8. A rectifier structure for a gas generator according to claim 1, characterized in that: The rectifying filter (3) comprises a central piece (31), a side wall of the central piece (31) is provided with a plurality of mounting pieces (32), the mounting pieces (32) are arranged at an obtuse angle with the central piece (31), the mounting pieces (32) are connected to the inner wall of the rectifying hole (10), the filter hole (30) is provided in the middle of the central piece (31), and the inner side surface of the mounting piece (32) is provided with a plurality of hanging pins (33).

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