Elastic pad and airbag device

Abstract

The application provides an elastic pad and an air bag device, and belongs to the field of automobile air bags. The air bag device comprises an air bag, a gas generator, a support, a ring-shaped part and an elastic pad. The support is used for mounting the air bag device on a frame of a vehicle body. The gas generator is arranged in a mounting opening of the air bag and is at least partially wrapped by the support, and is used for providing inflation gas for the air bag. The ring-shaped part surrounds the support and fastens the air bag to the gas generator, and allows the inflation gas to enter the air bag. The elastic pad comprises at least one pad body, which is used for eliminating a gap caused by a difference between an upper surface of the support and an outer surface of the air bag. Through the processing scheme, the problem of air leakage after the air bag is unfolded is effectively solved, and the risk that the air bag is cut by a sharp edge when the air bag is unfolded is prevented.

Description

Technical Field

[0001] This invention relates to the field of automotive airbags, and more specifically to an elastic pad and an airbag device. Background Technology

[0002] Side airbags are curtain airbags installed on either side of the roof of a car door, designed to protect occupants' sides and heads in the event of a collision. Current side airbags require assembly with multiple components during installation. Typically, brackets and clamps are used to secure the column-shaped gas generator to the airbag. However, during airbag deployment, the clamps can loosen at the junction of the bracket and the airbag, leading to airbag leakage and insufficient pressure maintenance, thus failing to meet the regulatory requirement of maintaining pressure for 6 seconds for the side curtain airbag. To prevent clamp loosening, a common method is to thin the edges of the bracket to secure it tightly to the airbag inlet. However, thinning the bracket poses a risk of rupturing the airbag during deployment, compromising safety. Furthermore, the thinned areas of the bracket are prone to deformation, further reducing the safety of the airbag system. Summary of the Invention

[0003] Therefore, in order to overcome the shortcomings of the prior art, the present invention provides an elastic pad and an airbag device, which can effectively solve the problem of air leakage after the airbag is deployed, and at the same time prevent the risk of the airbag being torn by sharp edges when it is deployed.

[0004] To achieve the above objectives, the present invention provides an elastic pad for use in an airbag device. The airbag device includes an air bag, a gas generator, a bracket, an annular member, and the elastic pad. The bracket mounts the airbag device on a frame on the side of a vehicle body. The gas generator is inserted into the mounting opening of the air bag and is at least partially surrounded by the bracket to provide inflatable gas to the air bag. The annular member surrounds the bracket and secures the air bag to the gas generator, allowing the inflatable gas to enter the air bag. The elastic pad includes at least one pad body for eliminating gaps in the annular member caused by the height difference between the upper surface of the bracket and the outer surface of the air bag.

[0005] In one embodiment, the contact between the gasket body and the bracket, the air bag, and the annular component is all surface contact.

[0006] In one embodiment, the gasket body and the gap are interference fit.

[0007] In one embodiment, the gasket body is shaped to conform to the gap.

[0008] In one embodiment, the elastic pad includes two pad bodies, respectively disposed on both ends of the bracket that fix the gas generator. The two pad bodies are connected by at least one connecting bridge, the length of which is not less than the width of the bracket surface spanned by the two pad bodies.

[0009] In one embodiment, the two gasket bodies are connected by two connecting bridges, which are symmetrically arranged on the sides of the gasket bodies.

[0010] In one embodiment, the gap between the two connecting bridges gradually narrows upward from the gasket body end.

[0011] In one embodiment, the connecting bridge also has at least one first end seat that can contact the surface of the support.

[0012] In one embodiment, a snap-fit ​​portion is further provided on the bottom surface of the first end seat to restrict the movement of the annular member.

[0013] In one embodiment, an extension portion is further provided on the upper surface of the first end seat, which extends outward along the vertical direction of the connecting bridge.

[0014] In one embodiment, the connecting bridge is made of an elastic material.

[0015] In one embodiment, the middle part of the gasket body is provided as a groove, and limit walls are symmetrically arranged on both sides of the groove.

[0016] In one embodiment, the upper end of the limiting wall is provided with barbs for preventing detachment.

[0017] In one embodiment, the upper end face of the barb is a guide surface. When the annular part is installed in conjunction with the gasket body, the annular part is guided into the groove from the guide surface, and the two sides of the annular part are blocked by the limiting wall.

[0018] In one embodiment, the lower end face of the barb is parallel to the bottom surface of the groove.

[0019] In one embodiment, the base of the limiting walls on both sides of the gasket body can extend outward to form an extension, which contacts the stop portion on the bracket that restricts the annular member.

[0020] In one embodiment, the roots on both sides of the gasket body may extend outward to form extensions, which contact the stop portion on the bracket that restricts the annular member.

[0021] An airbag device includes an airbag, a gas generator, a bracket, an annular component, and an elastic pad. The bracket mounts the airbag device on a frame on the side of a vehicle body. The gas generator is inserted into the mounting opening of the airbag and is at least partially surrounded by the bracket, for providing inflatable gas to the airbag. The annular component surrounds the bracket and secures the airbag to the gas generator, allowing the inflatable gas to enter the airbag. The elastic pad eliminates gaps in the annular component caused by the height difference between the upper surface of the bracket and the outer surface of the airbag, wherein the elastic pad is the aforementioned elastic pad.

[0022] Compared with existing technologies, the advantages of this invention are as follows: by filling the gap at the junction of the support and the airbag with an elastic pad, the clamps are prevented from loosening at the junction of the support and the airbag. This not only effectively solves the problem of air leakage after the airbag is deployed, but also prevents the risk of the airbag being torn by sharp edges during deployment and achieves long-term pressure maintenance. Furthermore, this elastic pad can be designed and mass-produced on a platform, resulting in low cost. It is also easy to promote and applicable to all methods of fastening cylindrical gas generators and airbags, not limited to side curtain airbags, distal airbags, and other airbag devices. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the airbag device in one embodiment of the present invention;

[0025] Figure 2 yes Figure 1 AA-section view of the central airbag device;

[0026] Figure 3 This is a schematic diagram of the structure of the elastic pad in one embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the elastic pad in another embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the elastic pad in another embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the elastic pad in another embodiment of the present invention;

[0030] Figure 7 This is a partial structural diagram of the bracket in another embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the cross-sectional positions of the airbag device in another embodiment of the present invention;

[0032] Figure 9 yes Figure 8 AA-section view of the central airbag device;

[0033] Figure 10 yes Figure 8 Cross-sectional view of the BB section of the medium elastic pad;

[0034] Figure 11 yes Figure 8 Schematic diagram of the structure of the medium elastic pad;

[0035] Figure 12 yes Figure 11 Cross-sectional view of the C-section of the medium elastic pad;

[0036] Figure 13 This is a partial structural diagram of the bracket in another embodiment of the present invention;

[0037] Figure 14 This is a partial structural diagram of the bracket in another embodiment of the present invention;

[0038] Figure 15 This is a schematic diagram of the structure of the elastic pad in another embodiment of the present invention;

[0039] Figure 16 This is a partial structural schematic diagram of the airbag device in another embodiment of the present invention. Detailed Implementation

[0040] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0041] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] It should be noted that the following description covers various aspects of embodiments within the scope of protection of this invention. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using other structures and / or functionalities besides one or more of the aspects set forth herein.

[0043] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0044] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0045] like Figure 1 and Figure 3 As shown, an embodiment of this application provides an airbag device 100 including an air bag 4, a gas generator 3, a bracket 2, an annular component 5, and an elastic pad 1.

[0046] The bracket 2 mounts the airbag device 100 onto a frame on the side of the vehicle body. The bracket 2 can be formed from metal. The bracket 2 has an arc-shaped bend that conforms to the gas generator 3 and the airbag 4, and a mounting portion that fixes this arc-shaped bend to the side of the vehicle body. The arc-shaped bend and the mounting portion can be integrally formed or connected by a connecting portion. The connecting portion can be solder or bolts, etc. The arc-shaped bend only partially encloses the gas generator 3 and the airbag 4.

[0047] The gas generator 3 is inserted into the mounting opening of the gas bag 4 and is at least partially surrounded by the bracket 2. The gas generator 3 is used to supply inflating gas to the gas bag 4. The gas generator 3 can be fully or partially surrounded by the gas bag 4. When the gas generator 3 is fully surrounded by the gas bag 4, the gas generator 3 is indirectly surrounded by the arc-shaped bend of the bracket 2 through the gas bag 4.

[0048] During a vehicle collision, the airbag 4 receives expanding gas from the gas generator 3 and forms an air cushion at a sufficiently high speed to absorb energy and protect the occupants, thereby reducing and mitigating occupant injuries. The airbag can be wrapped around the outside of the gas generator 3 and rolled into a roller for storage; alternatively, the airbag can be folded and wrapped around the outside of the gas generator 3.

[0049] The annular component 5 surrounds the support 2 and secures the air bag 4 to the gas generator 3, allowing expanding gas to enter the air bag 4. The annular component 5 can be a circular ring; the annular component 5 can also be... Figure 2 The integrated clamp shown has a front-to-back offset structure; the annular part 5 can also be a separate clamp, which can be fixed by snapping. When the annular part 5 surrounds the bracket 2 and fastens the air bag 4 to the gas generator 3, in order to ensure the stability of the airbag device 100 when the air bag is inflated, the bracket has a predetermined thickness, so there is a height difference between the upper surface of the bracket and the outer surface of the air bag, and this height difference cannot be eliminated.

[0050] The elastic pad 1 is used to eliminate gaps in the annular component 5 caused by the height difference between the upper surface of the support and the outer surface of the air bag. The elastic pad 1 includes at least one pad body 11 for eliminating gaps in the annular component caused by the height difference between the upper surface of the support and the outer surface of the air bag. Figure 2 As shown, the elastic pad 1 includes two pad bodies 11 and a connecting bridge 12. The pad bodies 11 can be made of materials such as rubber or plastic.

[0051] The inner side of the annular component 5 that can contact the surface of the bracket 2 is the first contact surface, and the inner side of the annular component 5 that can contact the surface of the air bag 4 is the second contact surface. The gasket body 11 is disposed in the space between the first contact surface and the second contact surface, which can eliminate the transition difference between the two contact surfaces. The gasket body 11 can have surface contact with the first contact surface and the second contact surface, or it can have point contact. When the gasket body 11 can have point contact with the first contact surface and the second contact surface, there are multiple contact points between the gasket body 11 and the first contact surface and the second contact surface, so as to ensure that the gasket body 11 does not shift.

[0052] The aforementioned device, by filling the gap at the junction of the support and the airbag with an elastic pad, prevents the clamp from loosening at this junction. This not only effectively solves the problem of air leakage after the airbag deploys, but also prevents the airbag from being torn by sharp edges during deployment and achieves long-term pressure maintenance. Furthermore, this elastic pad can be designed and mass-produced on a platform, resulting in low cost and ease of promotion. It is applicable to all cylindrical gas generators and airbag fastening methods, not limited to side curtain airbags, distal airbags, and other airbag devices.

[0053] In one embodiment, the contact between the gasket body and the support, air bag, and annular component is all surface contact. The surface of the support perpendicular to the air bag is the third contact surface, such as... Figure 2 As shown, the gasket body 11 can simultaneously contact the first contact surface, the second contact surface, and the third contact surface, and all of these are surface contacts. At this time, the contact between the gasket body 11 and the bracket 2, the air bag 4, and the annular component 5 are all surface contacts.

[0054] The above settings can effectively prevent the gasket body from shifting.

[0055] In one embodiment, the gasket body and the gap are interference-fitted, which completely eliminates the height difference between the upper surface of the support and the outer surface of the air bag. The thickest part of the gasket body can be no less than the thickness of the support itself.

[0056] In one embodiment, the gasket body is shaped to fit the gap, which can eliminate the height difference between the upper surface of the support and the outer surface of the air bag while improving the sealing ability of the elastic gasket to the gap.

[0057] like Figure 2 As shown, in one embodiment, the elastic pad includes two pad bodies 11, which are respectively disposed on both ends of the bracket 2 fixing the gas generator 3. Figure 3 As shown, two gasket bodies are connected by at least one connecting bridge 12, the length of which is not less than the width of the support surface spanned by the two gasket bodies. The width of the connecting bridge 12 may not be greater than the width of the gasket body 11. The shape of the connecting bridge may be arc-shaped, zigzag-shaped, etc. The material of the connecting bridge 12 may be the same as or different from the material of the gasket body 11.

[0058] The above settings allow for the rapid installation of the airbag device.

[0059] like Figure 4 As shown, in one embodiment, the two gasket bodies are connected by two connecting bridges, which are symmetrically arranged on the sides of the gasket bodies. Compared with a single connecting bridge design, this not only reduces the installation difficulty of the elastic gasket but also prevents the annular member 5 from detaching from the elastic gasket.

[0060] like Figure 4 and Figure 5 As shown, in one embodiment, the gap between the two connecting bridges gradually narrows upwards from the gasket body end, which can further restrict the annular member 5 from dislodging from the elastic gasket. The distance between the two connecting bridges is largest at the ends closest to the gasket body 11, and then gradually narrows, with the distance between the middle sections of the two connecting bridges being less than the width of the gasket body 11.

[0061] like Figure 5As shown, in one embodiment, the connecting bridge 12' also has at least one first end seat 121' that can contact the surface of the bracket 2. Figure 9 The connecting bridge also has at least one first end seat 1c' that can contact the surface of the bracket. This configuration not only limits the vertical movement of the annular component 5, but also allows for redundancy in the length of the connecting bridge, enabling it to adapt to gas generators or brackets of different diameters. Furthermore, this configuration allows the connecting bridge and the gasket body to be integrally molded without requiring re-molding or design changes due to variations in the bracket surface width. The length of the connecting bridge can cover the entire range from the width of the basic bracket surface to the bracket surface width required for different vehicle models. The number of first end seats can be designed as needed; the more numerous the first end seats, the longer the redundant length of the connecting bridge and the wider the adaptability. The shape of the first end seat can be any of a cube, cuboid, prism, or frustum. Figure 6 As shown, the first end seat is shaped like a truncated quadrangular pyramid.

[0062] like Figure 5 As shown, in one embodiment, a locking portion 122' for restricting the movement of the annular member is further provided on the bottom surface of the first end seat. The locking portion 122' can be inserted into Figure 7 The ring-shaped component is held in place by holes in the bracket and abutted from the side to prevent it from moving or becoming misaligned. The gap between the snap-fit ​​portions 122' of the two connecting bridges is no greater than the width of the ring-shaped component. The snap-fit ​​portions 122' can be fully or partially inserted. Figure 7 The snap-fit ​​part 122' is inserted into the hole on the bracket. Figure 7 The depth of the bracket can be between 0.8 and 1.5 mm. The shape of the snap-fit ​​part 122' can be a three-dimensional shape such as a cylinder, cuboid, or cube.

[0063] like Figure 5 , Figure 8 , Figure 11 As shown, in one embodiment, an extension portion is further provided on the upper end face of the first end seat, which extends outward along the vertical direction of the connecting bridge. Figure 5 The extension 123' is used to facilitate the assembly of the airbag device.

[0064] like Figure 8 , Figure 9 , Figure 11 As shown, the elastic pad 1' comprises two pad bodies 1a' and two connecting bridges 1d'. Each connecting bridge 1d' is provided with a first end seat 1c', the bottom surface of which contacts the upper surface of the bracket 2. The pad bodies 1a' and the connecting bridges 1d' are made of different materials. Figure 9In the sectional view, the shape of the connecting bridge 1d' is approximately "M". Because the connecting bridge is flexible, the peaks of the "M" shape can adapt to different ranges of bracket widths required by different vehicle models. When the bracket width is large, the ends of the connecting bridge are spread out, and the "M" shape is shorter and wider; when the bracket width is small, the ends of the connecting bridge have smaller curvature, and the "M" shape is taller and narrower.

[0065] like Figure 10 As shown, the two first end seats 1c' respectively contact the surface of the bracket 2. The gap between the two connecting bridges gradually narrows upwards from the upper surface of the annular member 5, further restricting the annular member 5 from disengaging from the elastic pad. The first end seats 1c' may not contact the surface of the annular member 5. The annular member 5 is restricted from movement by the two connecting bridges.

[0066] like Figure 11 As shown, in one embodiment, the first end seat 1c' is further provided with an extension that extends outward along the vertical direction of the connecting bridge. This extension can be used for mounting between the elastic pad and other components. The distance between the farthest endpoints of the extensions of the two connecting bridges is no greater than the width of the pad body 1a'.

[0067] In one embodiment, the connecting bridge is made of an elastic material. The connecting bridge 12 can be made of a metal material with elastic deformation, or it can be made of rubber or plastic, or it can be integrally formed with the gasket body 11. In some embodiments, the thickness of the connecting bridge 1d' (excluding the first end seat 1c') may not be greater than the thickness of the annular component.

[0068] like Figure 12 As shown, in one embodiment, the middle part of the gasket body 1a' is configured as a groove, and limiting walls 1e are symmetrically arranged on both sides of the groove. The limiting walls 1e are used to restrict the left and right movement of the annular part 5 in the groove, preventing the annular part 5 from coming out from the side.

[0069] like Figure 12 As shown, in one embodiment, the upper end of the limiting wall 1e is provided with a barb 1b' for preventing detachment. The barb 1b' is used to restrict the up-and-down movement of the annular member 5 in the groove, preventing the annular member 5 from coming off from above.

[0070] like Figure 12 As shown, in one embodiment, the upper surface of the barb 1b' serves as a guide surface. When the annular component is installed in conjunction with the gasket body, the annular component is guided into the groove from the guide surface, with its two sides blocked by limiting walls. The guide surface facilitates the assembly of the annular component and the elastic gasket. The lower surface of the barb 1b' may be perpendicular to the sidewall of the groove or form an acute angle with the sidewall of the groove.

[0071] In one embodiment, the lower end face of the barb 1b' is parallel to the bottom surface of the groove, further restricting the annular piece 5 from disengaging from above.

[0072] like Figure 13 As shown, the bracket 2' has a stop 21' at the position where the ring part 5 is installed. The stop 21' is used to restrict the ring part and to achieve quick positioning and assembly during installation.

[0073] like Figure 14 As shown, the bracket 2” has a stop 21” at the position where the ring part 5 is installed. The stop 21” is used to restrict the ring part and to achieve quick positioning and assembly during installation. Figure 14 The stop part 21” and Figure 13 The difference between the stop part 21' and the stop part 21' is whether the stop part is set around the bracket. The stop part 21" cooperates with the ring part to realize the positioning of the ring part. Figure 13 The stop portion 21' is formed as a concave surface, and the thickness of the annular part is not greater than the depth of the concave surface. This not only achieves the positioning of the annular part, but also prevents the annular part from vibrating left and right.

[0074] like Figure 15 As shown, in one embodiment, the elastic gasket 1” may include a gasket body, the middle of which is configured as a groove, and limiting walls 1e' are symmetrically arranged on both sides of the groove. The upper end of the limiting wall 1e' is provided with a barb 1b” for preventing detachment. An extension 1f' may extend outward from the root of the limiting walls on both sides of the gasket body, and the extension 1f' contacts the stop 21' of the limiting ring on the bracket. The extension 1f' and the stop 21' may be an interference fit or only in contact. In some embodiments, the extension length of the extension 1f' may be close to and completely cover the stop 21'. The extension 1f' is used to assist in installation.

[0075] like Figure 16 As shown, the bracket has a stop portion. The elastic gasket includes two gasket bodies and two connecting bridges. In one embodiment, the roots on both sides of the gasket bodies may extend outward to form extensions that contact the stop portion of the limiting annular member on the bracket. The extensions may partially cover the stop portion of the bracket.

[0076] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. An elastic pad for use in an airbag device, characterized in that, The airbag device includes an air bag, a gas generator, a bracket, a ring-shaped component, and an elastic pad. The bracket mounts the airbag device onto a frame on the side of the vehicle body; The gas generator is inserted into the mounting port of the gas bag and is at least partially surrounded by the bracket for providing expansion gas to the gas bag; The annular component surrounds the support and secures the air bag to the gas generator, while allowing the expanding gas to enter the air bag; The elastic pad is an elastic component independent of the air bag. The elastic pad includes two pad bodies, which are respectively disposed on both ends of the bracket that fix the gas generator. The pad body is used to eliminate the gap caused by the height difference between the upper surface of the bracket and the outer surface of the air bag, and to prevent the air bag from being torn when it is deployed. The two pad bodies are connected by at least one connecting bridge. The length of the connecting bridge is not less than the width of the bracket surface spanned by the two pad bodies. The middle part of the pad body is set as a groove, and limit walls are symmetrically arranged on both sides of the groove. The pad body and the gap are interference fit, and the thickness of the corresponding part of the pad body and the groove gradually decreases from the end closer to the connecting bridge to the end farther away from the connecting bridge.

2. The elastic pad according to claim 1, characterized in that, The contact between the gasket body and the bracket, the air bag, and the annular component is all surface contact.

3. The elastic pad according to claim 1, characterized in that, The shape of the gasket body is a contoured design that fits the gap.

4. The elastic pad according to claim 1, characterized in that, The two gasket bodies are connected by two connecting bridges, which are symmetrically arranged on the sides of the gasket bodies.

5. The elastic pad according to claim 4, characterized in that, The gap between the two connecting bridges gradually narrows upwards from the gasket body end.

6. The elastic pad according to claim 4, characterized in that, The connecting bridge also has at least one first end seat that can contact the surface of the bracket.

7. The elastic pad according to claim 6, characterized in that, A locking portion is also provided on the bottom surface of the first end seat to restrict the movement of the annular component.

8. The elastic pad according to claim 6, characterized in that, An extension portion is also provided on the upper surface of the first end seat, which extends outward along the vertical direction of the connecting bridge.

9. The elastic pad according to claim 1, characterized in that, The connecting bridge is made of an elastic material.

10. The elastic pad according to claim 1, characterized in that, The upper end of the limiting wall is provided with barbs to prevent detachment.

11. The elastic pad according to claim 10, characterized in that, The upper surface of the barb is a guide surface. When the annular component is installed in conjunction with the gasket body, the annular component is guided into the groove from the guide surface, and the two sides of the annular component are blocked by the limiting wall.

12. The elastic pad according to claim 10, characterized in that, The lower end face of the barb is parallel to the bottom surface of the groove.

13. The elastic pad according to any one of claims 10 to 12, characterized in that, The base of the limiting walls on both sides of the gasket body can extend outward to form an extension, and the extension contacts the stop portion on the bracket that restricts the annular component.

14. The elastic pad according to any one of claims 1 to 9, characterized in that, The roots on both sides of the gasket body can extend outward to form extensions, and the extensions contact the stop portion on the bracket that restricts the annular member.

15. An airbag device, characterized in that, Includes air bags, gas generators, brackets, ring-shaped components, and elastic pads. The bracket mounts the airbag device onto a frame on the side of the vehicle body; The gas generator is inserted into the mounting port of the gas bag and is at least partially surrounded by the bracket for providing expansion gas to the gas bag; The annular component surrounds the support and secures the air bag to the gas generator, while allowing the expanding gas to enter the air bag; The elastic pad is used to eliminate the gaps in the annular component caused by the height difference between the upper surface of the support and the outer surface of the air bag. Wherein, the elastic pad is the elastic pad according to any one of claims 1 to 14.

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