Airbag frame assembly and vehicle

Abstract

The application relates to a safety airbag frame assembly and a vehicle, and belongs to the technical field of vehicle safety systems; the safety airbag frame assembly comprises an airbag frame, the airbag frame is fixed to an instrument panel; a mounting cavity is arranged in the middle of the airbag frame; a plurality of fixing seats are arranged on the airbag frame, the fixing seats are provided with fixing bolts extending to the bottom of the vehicle; a safety airbag is embedded in the mounting cavity, the fixing bolts pass through fixing screw holes and are fixed with the shell of the safety airbag. The application does not need to arrange a metal support fixed with a welding beam under the safety airbag, so that the safety airbag can be kept at a certain distance from the welding beam. This not only simplifies the overall structure design, but also saves material cost and reduces operation complexity. Meanwhile, more arrangement space is added under the safety airbag, thereby providing convenience for subsequent function expansion.

Description

Technical Field

[0001] This application relates to the field of vehicle safety system technology, and in particular to an airbag frame assembly and a vehicle. Background Technology

[0002] As modern automobiles become increasingly sophisticated, consumers are paying significantly more attention to vehicle safety. Vehicle safety performance has become a core component of brand image; brands that prioritize safety are more likely to gain consumer trust, thereby increasing market share. Therefore, the reliability of airbags, as a crucial device for ensuring occupant safety, is of paramount importance.

[0003] The airbag is installed in front of the occupant and is fixed to the lower part of the upper instrument panel assembly frame by the airbag frame. In the event of a vehicle collision, the airbag must ensure normal deployment and meet the preset opening state and performance requirements; therefore, the stability of its fixing and connection structure plays a decisive role.

[0004] In conventional vehicles, the airbag frame is welded to the upper assembly of the dashboard, and the airbag is connected to the airbag frame via a snap-fit ​​structure. Due to the significant weight of the airbag, a sheet metal bracket is typically added between the airbag and the welded beam to provide additional support and prevent it from detaching due to vehicle bumps. However, existing airbag fixing structures suffer from complex design, large space requirements, and are prone to damaging surrounding components during assembly. Utility Model Content

[0005] This application provides an airbag frame assembly and a vehicle, the purpose of which is to enable the airbag to be directly and securely mounted on the airbag frame of the upper instrument panel assembly using a number of fixing bolts, without the need for a bottom support sheet metal bracket. This not only simplifies the complexity of the welding beam, but also avoids the influence of tolerances between the upper instrument panel assembly and the welding beam while meeting the usage requirements and functional needs of the airbag. In addition, this method can save materials, reduce costs, and free up the lower space of the passenger airbag, creating conditions for the development of subsequent new functions.

[0006] To achieve the above objectives, this application adopts the following technical solution: This application provides an airbag frame assembly for fixing an airbag; the airbag frame assembly includes an airbag frame, which is fixed to the side of the dashboard facing the bottom of the vehicle; a mounting cavity is provided through the middle of the airbag frame along its thickness direction; a plurality of fixing seats are provided on the airbag frame, and the plurality of fixing seats are spaced apart along the edge of the mounting cavity; fixing bolts extending towards the bottom of the vehicle are provided on the fixing seats. The airbag is embedded in the mounting cavity, the housing of the airbag is provided with fixing screw holes adapted to the fixing bolts, the fixing screw holes are in one-to-one correspondence with the fixing bolts, and the fixing bolts pass through the fixing screw holes and are fixed to the housing of the airbag.

[0007] In the above embodiments, by additionally providing the fixing seat and the fixing bolt embedded therein, the present application realizes the direct connection between the airbag and the airbag frame, so as to obtain sufficient connection strength and ensure that the airbag will not fall off due to jolting during the driving process of the vehicle. Therefore, there is no need to provide a sheet metal bracket fixed to the welding beam under the airbag to provide additional support, so that the airbag is kept at a certain distance from the welding beam. This not only simplifies the overall structural design, but also saves material costs and reduces operational complexity. At the same time, more arrangement space is added under the airbag, which provides convenience for subsequent function expansion. In some embodiments, a side of the airbag frame facing the bottom of the vehicle is provided with a first reinforcing structure, and the first reinforcing structure includes: A plurality of first reinforcing ribs extending and arranged along the first direction and a plurality of second reinforcing ribs extending and arranged along the second direction, and the plurality of first reinforcing ribs intersect with the plurality of second reinforcing ribs to form a mesh structure; The fixing seat is arranged at the intersection of the first reinforcing rib and the second reinforcing rib.

[0008] In the above embodiments, the present application forms a mesh reinforcing structure through the first reinforcing ribs and the second reinforcing ribs, which effectively improves the overall structural strength and deformation resistance of the airbag frame. Meanwhile, the fixing seat is arranged at the intersection of the first reinforcing ribs and the second reinforcing ribs, which further structurally reinforces the fixing seat, so that the fixing seat can bear a larger load, thereby ensuring that the airbag can be more reliably hoisted in the airbag frame, and improving the stability and reliability of airbag installation. In some embodiments, the vertical distance between the end of the fixing seat close to the vehicle floor and the vehicle floor is a, and the vertical distance between the side of the first reinforcing structure close to the vehicle floor and the vehicle floor is b; where a < b; a plurality of third reinforcing ribs are arranged between the end of the fixing seat close to the vehicle floor and the first reinforcing structure.

[0009] In the above embodiments, by arranging a plurality of third reinforcing ribs on the part of the fixing seat protruding from the first reinforcing structure, the present application significantly enhances the structural strength of this region, which can effectively avoid cracks at the connection between the exposed part of the fixing bolt and the fixing seat caused by the large force exerted by the airbag on the fixing bolt due to inertia during acceleration, deceleration or turning in the process of vehicle driving, prevent the fixing bolt from falling off, ensure the installation stability and reliability of the airbag, and further guarantee driving safety. In some embodiments, the airbag frame further includes a first fixing part, a second fixing part, and a third fixing part; the first fixing part is connected to the side wall of the defrosting air duct, and the second fixing part and the third fixing part are both connected to the dashboard.

[0010] In the above embodiments, the airbag frame of this application is supplemented by a first fixing part, a second fixing part and a third fixing part, and is fixed to two different structures, namely the defrost duct sidewall and the dashboard, forming a multi-support, multi-directional fixing system. This significantly enhances the overall stability of the airbag frame, disperses the installation stress, and prevents the airbag frame from loosening or falling off due to vehicle bumps during driving, thereby improving the structural reliability and vibration resistance of the airbag frame assembly. In some embodiments, the fixing bolt includes: Fixed cap; A connecting part, one end of which is connected to the fixing cap; the diameter of the fixing cap is larger than the diameter of the connecting part; the connecting part is provided with several protruding ribs; A screw portion is disposed at the end of the connecting portion away from the fixing cap; the screw portion is used to connect the airbag; The fixing cap and the connecting part are disposed in the fixing base.

[0011] In the above embodiments, this application discloses the specific structure of the fixing bolt. By setting a three-section structure of fixing cap, connecting part and screw part, the diameter of fixing cap is larger than the diameter of connecting part to form a limit and prevent the fixing bolt from coming out of fixing seat. Several protruding ribs on the connecting part increase the mechanical biting force and friction with the fixing seat, so that the fixing bolt can be more tightly connected with the fixing seat, effectively avoiding the fixing bolt from loosening or falling out of the fixing seat due to vehicle bumps, and ensuring the stable connection between the airbag and the airbag frame. In some embodiments, the airbag frame is provided with a plurality of first welded reinforcing ribs spaced apart on the side facing the instrument panel, and a first overflow channel is provided between two adjacent first welded reinforcing ribs.

[0012] In the above embodiments, the airbag frame of this application partially melts the first welded reinforcing rib by vibration friction welding. The molten material can flow into the first overflow channel in a directional manner. After cooling and solidification, it forms a continuous welded joint surface, realizing a firm connection between the airbag frame and the dashboard and improving the welding strength. At the same time, compared with the grid-shaped welded reinforcing ribs of the traditional technology, the design of the first overflow channel of this application can accommodate and guide the molten material, avoiding excessive accumulation of molten material in the grid, which would cause the molten material to overflow and contaminate surrounding parts or affect the appearance quality. In some embodiments, the airbag frame assembly further includes an airbag door disposed in the mounting cavity and fitted to the dashboard; the airbag door is connected to the airbag frame by at least one fracture rib.

[0013] In the above embodiments, when the vehicle is in normal driving, the airbag door is closely fitted to the dashboard to provide effective support and maintain the flatness and appearance integrity of the dashboard surface; when the airbag is deployed, the airbag door breaks the fracture rib under the action of the airbag expansion force, thereby quickly detaching from the airbag frame and opening the mounting cavity, providing a smooth and unobstructed channel for the deployment of the airbag, ensuring that the airbag can deploy smoothly and protecting the safety of the occupants during the collision. In some embodiments, the airbag frame assembly further includes a pull strap that extends along a first direction or a second direction and passes through the airbag door. Both ends of the pull strap extend out of the airbag door and are fixed to the airbag frame. The pull strap has a plurality of break holes at the gap between the airbag door and the airbag frame on either side or at the gap between two adjacent airbag doors.

[0014] In the above embodiments, the airbag doors in this application are only connected to the airbag frame by a few fracture ribs, resulting in a relatively weak connection. Without a support strap, the airbag doors may sag during normal vehicle operation due to lack of support, causing dents or incompleteness in the dashboard appearance. Therefore, by providing a layered support strap, basic support is provided for the airbag doors, enhancing the connection strength between airbag doors and between the airbag doors and the airbag frame, ensuring the flatness of the dashboard appearance. Furthermore, the two ends of the support strap extend and are fixed to the airbag frame, acting as a hinge when the airbag deploys, preventing the airbag doors from flying out and causing secondary injuries to the occupants. More importantly, the fracture hole design ensures that the support strap is inevitably torn when the airbag deploys, preventing the support strap from obstructing the airbag's deployment and ensuring its smooth unfolding. In some embodiments, the airbag door is provided with a plurality of second welded reinforcing ribs spaced apart on the side facing the instrument panel, and a second overflow channel is provided between two adjacent second welded reinforcing ribs, and an overflow hole is provided in the second overflow channel.

[0015] In the above embodiments, the airbag door of this application partially melts the second welded reinforcing rib through vibration friction welding. The molten material can flow directionally into the second overflow channel. After cooling and solidification, a firm connection between the airbag frame and the dashboard is achieved, improving the connection strength and sealing performance. At the same time, compared with the grid-shaped welded reinforcing ribs of the traditional technology, the second overflow channel and the overflow holes provided inside the application can accommodate excess molten material, effectively avoiding excessive accumulation of excess molten material that could overflow and contaminate the appearance of the dashboard or affect the assembly accuracy of surrounding components, thus ensuring the appearance quality and assembly reliability of the product. In addition, this application also provides a vehicle, including a vehicle body, an instrument panel, an airbag and an airbag frame assembly as described above; The dashboard is located inside the vehicle body, the airbag frame assembly is located on the side of the dashboard facing the bottom of the vehicle, and the airbag is fixed to the airbag frame assembly.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0017] Figure 1 This is a bottom view of the airbag frame assembly provided in this application embodiment when it is assembled on the dashboard; Figure 2 This is a top view of the airbag frame assembly provided in this application embodiment when it is installed on the dashboard (with the dashboard hidden). Figure 3 This is a schematic diagram of the structure of the airbag frame assembly and the airbag provided in the embodiments of this application; Figure 4 This is a first-view schematic diagram of the airbag frame assembly provided in the embodiments of this application; Figure 5 This is a second-view schematic diagram of the airbag frame assembly provided in the embodiments of this application; Figure 6 yes Figure 5 Enlarged view of part A in the image; Figure 7 This is a third-view schematic diagram of the airbag frame assembly provided in the embodiments of this application; Figure 8 yes Figure 7 Enlarged view of part B in the image; Figure 9 This is a bottom view of the airbag frame assembly provided in the embodiments of this application; Figure 10 yes Figure 9 A cross-sectional diagram of CC in the diagram; Figure 11 This is a schematic diagram of the pull strap structure provided in an embodiment of this application; Figure 12 This is a schematic diagram of the structure of the fixing bolt provided in the embodiment of this application.

[0018] In the above figures: 100, airbag frame assembly; 110, airbag frame; 111, first reinforcing structure; 111a, first reinforcing rib; 111b, second reinforcing rib; 112, fixing seat; 112a, third reinforcing rib; 113, fixing bolt; 113a, fixing cap; 113b, connecting part; 113c, threaded part; 113d, protruding rib; 114, first fixing part; 115, second fixing part; 116, third fixing part; 117. Screw; 118. First welded reinforcing rib; 119. First overflow channel; 120. Airbag door; 121. Second welded reinforcing rib; 122. Second overflow channel; 123. Overflow hole; 124. Fracture rib; 125. Second reinforcing structure; 130. Pull strap; 131. Limiting hole; 132. Fracture hole; 140. Mounting cavity; 200. Airbag; 300. Instrument panel; 400. Welded beam; 500. Defrosting duct. Detailed Implementation

[0019] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0020] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0021] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0022] Additionally, if the meaning of "and / or" in the text is that it includes three parallel options, taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0023] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0024] As modern automobiles become increasingly sophisticated, consumers are paying significantly more attention to vehicle safety. Vehicle safety performance has become a core component of brand image; brands that prioritize safety are more likely to gain consumer trust, thereby increasing market share. Therefore, the reliability of airbags, as a crucial device for ensuring occupant safety, is of paramount importance.

[0025] The passenger-side airbag is installed in front of the passenger and is fixed to the lower part of the upper instrument panel assembly frame via an airbag frame. In the event of a collision, the airbag must ensure normal deployment and meet preset opening and performance requirements; therefore, the stability of its fixing and connection structure plays a decisive role.

[0026] In conventional vehicles, the airbag frame is typically welded to the upper dashboard assembly, with the airbag secured to it via a snap-fit ​​mechanism. Considering the significant weight of the airbag, an additional sheet metal bracket is usually installed between the airbag and the welded beam located below the dashboard to prevent accidental dislodgement due to road bumps or severe vibrations during vehicle operation. The airbag is bolted to this bracket for added support. However, due to the extremely limited installation space and the presence of numerous complex wiring harnesses and other electronic devices nearby, assembly is not only difficult but also highly susceptible to damage during installation or maintenance, increasing both manufacturing risks and maintenance costs.

[0027] Based on this, this application proposes an airbag frame assembly and a vehicle; the airbag frame assembly 100 is fixed to the upper assembly of the dashboard 300 by welding and reinforced with screws 117; the airbag 200 is suspended from the airbag frame 110 by eight fixing bolts 113, achieving a tight connection. This design eliminates the sheet metal bracket connecting the welded beam 400 in the traditional solution, which avoids the potential interference of the welded beam 400 bracket to the airbag, and reduces material usage, product weight and cost; at the same time, by adding an installation cavity 140 and a reinforcing rib structure to the airbag frame 110, the performance of the front passenger airbag 200 device is ensured to be unaffected.

[0028] In the following, embodiments of this application will be described in detail with reference to the accompanying drawings.

[0029] As attached Figures 1 to 12 As shown in an illustrative embodiment of this application, this application provides an airbag frame assembly 100 for suspending and fixing an airbag 200 to the side of the dashboard 300 facing the vehicle floor.

[0030] It is worth noting that this document defines the front-rear direction of the vehicle as the front-rear direction of each component in this application, the width direction of the vehicle as the left-right direction of each component in this application, and the height direction of the vehicle as the up-down direction of each component in this application. This definition is used throughout the document and will not be repeated.

[0031] In some embodiments, the airbag frame assembly 100 includes an airbag frame 110, which is fixed to the side of the dashboard 300 facing the bottom of the vehicle. A mounting cavity 140 is provided through the center of the airbag frame 110 along its thickness direction, meaning the mounting cavity 140 extends through the vertical direction of the airbag frame 110. The airbag frame 110 is provided with a plurality of fixing seats 112, which are spaced apart along the edge of the mounting cavity 140; each fixing seat 112 is provided with a fixing bolt 113 extending towards the bottom of the vehicle.

[0032] In some embodiments, when projected along the vertical direction, the main body of the airbag frame 110 is a rectangular structure; wherein, the length of the edge of the airbag frame 110 extending along the first direction is greater than the length of the edge extending along the second direction.

[0033] Wherein, the first direction is the left-right direction of this application, and the second direction is the front-back direction of this application; or, the first direction is the front-back direction of this application, and the second direction is the left-right direction of this application. This definition is used throughout the text and will not be repeated.

[0034] In some embodiments, the mounting cavity 140 is projected in the vertical direction and is a rectangle with rounded corners; wherein the length of the edge of the mounting cavity 140 extending in the first direction is greater than the length of the edge extending in the second direction.

[0035] In some embodiments, the number of mounting bases 112 is eight.

[0036] Furthermore, the mounting cavity 140 has four edges, two of which extend along a first direction and the other two along a second direction. Near each edge extending along the first direction, three fixing seats 112 are provided, with equal spacing between adjacent fixing seats 112. Near each edge extending along the second direction, one fixing seat 112 is provided.

[0037] In some embodiments, the airbag 200 is embedded in the mounting cavity 140. The housing of the airbag 200 is provided with fixing screw holes adapted to the fixing bolts 113. The fixing screw holes correspond one-to-one with the fixing bolts 113. The fixing bolts 113 pass through the fixing screw holes and are fixed to the housing of the airbag 200.

[0038] In some embodiments, the fixing bolt 113 passes through the fixing screw hole and is fixed to the housing of the airbag 200 by a nut.

[0039] In the above embodiments, this application achieves a direct connection between the airbag 200 and the airbag frame 110 by adding a fixing seat 112 and a fixing bolt 113 embedded therein, thereby obtaining sufficient connection strength to ensure that the airbag 200 will not detach due to bumps during vehicle operation. Therefore, there is no need to set a sheet metal bracket fixed to the welded beam 400 below the airbag 200 to provide additional support, allowing the airbag 200 to maintain a certain distance from the welded beam 400. This not only simplifies the overall structural design but also saves material costs and reduces operational complexity. At the same time, more arrangement space is added below the airbag 200, providing convenience for subsequent functional expansion.

[0040] In some embodiments, such as Figure 5 , 6 As shown, the airbag frame 110 has a first reinforcing structure 111 on the side facing the bottom of the vehicle. The first reinforcing structure 111 includes: A plurality of first reinforcing ribs 111a extending along a first direction and a plurality of second reinforcing ribs 111b extending along a second direction are arranged together, and the plurality of first reinforcing ribs 111a and the plurality of second reinforcing ribs 111b intersect to form a mesh structure.

[0041] The fixing seat 112 is located at the intersection of the first reinforcing rib 111a and the second reinforcing rib 111b.

[0042] In the above embodiments, in the present application, the first reinforcing rib 111a and the second reinforcing rib 111b intersect with each other so that the first reinforcing structure 111 presents a mesh structure as a whole, which effectively improves the overall structural strength and deformation resistance of the airbag frame 110. Meanwhile, the fixing seat 112 is arranged at the intersection of the first reinforcing rib 111a and the second reinforcing rib 111b, which further structurally reinforces the fixing seat 112, enabling the fixing seat 112 to bear a larger load, thereby ensuring that the airbag 200 can be more reliably hoisted in the airbag frame 110, and improving the stability and reliability of the installation of the airbag 200.

[0043] In some embodiments, the vertical distance between the end of the fixing seat 112 close to the vehicle floor and the vehicle floor is a, and the vertical distance between the side of the first reinforcing structure 111 close to the vehicle floor and the vehicle floor is b; where a < b. Specifically, a part of the fixing seat 112 protrudes from the first reinforcing structure 111; a plurality of third reinforcing ribs 112a are arranged between the end of the fixing seat 112 close to the vehicle floor and the first reinforcing structure 111.

[0044] In some embodiments, the third reinforcing rib 112a has a plate-like structure.

[0045] In some embodiments, there are four third reinforcing ribs 112a, which are evenly arranged along the circumferential direction passing through the fixing seat 112 to equally divide the circumference.

[0046] In the above embodiments, as Figure 6 shown, in the present application, by arranging a plurality of third reinforcing ribs 112a on the part of the fixing seat 112 protruding from the first reinforcing structure 111, the structural strength of this area is significantly enhanced, which can effectively avoid cracks occurring at the connection between the exposed part of the fixing bolt 113 and the fixing seat 112 caused by the large force exerted on the fixing bolt 113 by the inertia of the airbag 200 during acceleration, deceleration or turning of the vehicle, prevent the fixing bolt 113 from falling off, ensure the installation stability and reliability of the airbag 200, and further guarantee driving safety.

[0047] In some embodiments, the airbag frame 110 further includes a first fixing portion 114, a second fixing portion 115 and a third fixing portion 116; the first fixing portion 114 is connected to the side wall of the defrosting air duct 500, and both the second fixing portion 115 and the third fixing portion 116 are connected to the instrument panel 300.

[0048] In some embodiments, the first fixing portion 114 and the third fixing portion 116 are respectively located on two edges of the airbag frame 110 extending along the second direction; and the second fixing portion 115 is located on any edge of the airbag frame 110 extending along the first direction.

[0049] In some embodiments, as Figure 7 As shown, the airbag frame assembly 100 also includes several screws 117; the first fixing part 114, the second fixing part 115, and the third fixing part 116 are each provided with through holes, and the side walls of the instrument panel 300 and the defrosting duct 500 are provided with screw holes corresponding to the through holes of the first fixing part 114, the second fixing part 115, and the third fixing part 116, with internal threads matching the screws 117 inside the screw holes. During assembly, the screws 117 pass through the through holes of the first fixing part 114, the second fixing part 115, or the third fixing part 116 in sequence and are screwed into the corresponding screw holes.

[0050] In the above embodiments, the airbag frame 110 of this application is supplemented by the first fixing part 114, the second fixing part 115 and the third fixing part 116, and is fixed to two different structures, namely the side wall of the defrosting air duct 500 and the instrument panel 300, forming a multi-support point and multi-directional fixing system. This significantly enhances the overall stability of the airbag frame 110, disperses the installation stress, and avoids the airbag frame 110 from loosening or falling off due to vehicle bumps during driving, thereby improving the structural reliability and vibration resistance of the airbag frame assembly 100.

[0051] In some embodiments, such as Figure 12 As shown, the fixing bolt 113 includes a fixing cap 113a, a connecting part 113b, and a threaded part 113c. The fixing cap 113a is disposed at one end of the connecting part 113b, and the threaded part 113c is disposed at the end of the connecting part 113b away from the fixing cap 113a. The diameter of the fixing cap 113a is larger than the diameter of the connecting part 113b, and the connecting part 113b is provided with several protruding ribs 113d. The fixing cap 113a and the connecting part 113b are disposed in the fixing seat 112, and the threaded part 113c is exposed outside the fixing seat 112. The threaded part 113c is provided with external threads and is used to connect the airbag 200.

[0052] In some embodiments, the fixing bolt 113 can be directly embedded into the fixing seat 112 during the injection molding process of the airbag frame 110, and plastic is injected to wrap it. After cooling, a firm connection that cannot be rotated or pulled out is formed, thereby achieving a more stable fixing effect.

[0053] In some embodiments, such as Figure 12 The ribs 113d extend along the axial direction of the fixing bolts 113, and a plurality of ribs 113d are evenly distributed around the circumference of the connecting portion 113b.

[0054] In the above embodiments, this application discloses the specific structure of the fixing bolt 113. By setting a three-section structure of fixing cap 113a, connecting part 113b and screw part 113c, the diameter of fixing cap 113a is larger than the diameter of connecting part 113b to form a limit, preventing the fixing bolt 113 from coming out of fixing seat 112; the several protruding ribs 113d on connecting part 113b increase the mechanical biting force and friction with fixing seat 112, so that fixing bolt 113 can be more tightly connected with fixing seat 112, effectively avoiding the fixing bolt 113 from loosening or falling out of fixing seat 112 due to vehicle bumps, and ensuring a stable connection between airbag 200 and airbag frame 110.

[0055] In some embodiments, the airbag frame 110 has a plurality of first welded reinforcing ribs 118 spaced apart on the side facing the instrument panel 300, and a first overflow channel 119 is provided between two adjacent first welded reinforcing ribs 118. During assembly, the airbag frame 110 is firmly welded to the instrument panel 300 using vibration friction welding technology.

[0056] Specifically, the first welded reinforcing ribs 118 do not intersect each other, and the first overflow channels 119 are interconnected.

[0057] Vibration friction welding is based on the principle of friction welding. Using a vibration friction welding machine, two plastic parts pressed together are vibrated, causing one of them to move back and forth relative to the other. Through the friction between the contact surfaces and between molecules, the temperature at the joint rises sharply, generating frictional heat. When the temperature is high enough to melt the plastic, it is solidified under fixed pressure to form a uniform weld, thereby achieving the purpose of welding and fixing the two parts.

[0058] In the above embodiments, the airbag frame 110 of this application partially melts the first welded reinforcing rib 118 by vibration friction welding. The molten material can flow into the first overflow channel 119 in a directional manner. After cooling and solidification, it forms a continuous welded joint surface, realizing a firm connection between the airbag frame and the instrument panel 300 and improving the welding strength. At the same time, compared with the grid-shaped welded reinforcing ribs of the traditional technology, the design of the first overflow channel 119 of this application can accommodate and guide the molten material, avoiding excessive accumulation of molten material in the grid, which would cause the molten material to overflow and contaminate surrounding parts or affect the appearance quality.

[0059] In some embodiments, the airbag frame assembly 100 further includes an airbag door 120 disposed in the mounting cavity 140 and fitted to the dashboard 300; the airbag door 120 is connected to the airbag frame 110 by at least one fracture rib 124.

[0060] In some embodiments, such as Figure 9The airbag door 120 is provided with a second reinforcing structure 125 on the side facing the vehicle floor. The second reinforcing structure 125 is a mesh reinforcing rib, thereby improving the structural strength of the airbag door 120.

[0061] In some embodiments, the number of airbag doors 120 is one.

[0062] In some embodiments, the number of airbag doors 120 is two; the accompanying drawings are exemplified here, but do not imply that there may only be two.

[0063] In some embodiments, each edge of the airbag door 120 extending along the second direction is provided with two fracture ribs 124 at intervals; that is, an airbag door 120 is connected to the airbag frame 110 through four fracture ribs 124, and the two edges of the airbag door 120 extending along the second direction are respectively connected to the airbag frame 110 through two fracture ribs 124.

[0064] In the above embodiments, when the vehicle is in normal driving, the airbag door 120 is closely fitted with the dashboard 300 to provide effective support and maintain the flatness and appearance integrity of the dashboard 300 surface; when the airbag 200 is detonated, the airbag door 120 causes the fracture rib 124 to break under the action of the airbag expansion force, thereby quickly detaching from the airbag frame 110 and opening the mounting cavity 140, providing a smooth and unobstructed channel for the deployment of the airbag 200, ensuring that the airbag 200 can deploy smoothly and protecting the safety of the occupants during the collision.

[0065] In some embodiments, such as Figure 10 As shown, the airbag frame assembly 100 also includes a pull strap 130, which extends along a first direction or a second direction and passes through the airbag door 120. Both ends of the pull strap 130 extend out of the airbag door 120 and are fixed to the airbag frame 110. The pull strap 130 has a plurality of break holes 132 at the gap between the airbag door 120 and the airbag frame 110 on any side or at the gap between two adjacent airbag doors 120.

[0066] In some embodiments, the material of the pull belt 130 is made of aramid and / or polyester.

[0067] In some embodiments, there is one airbag door 120, and a pull strap 130 extends along a second direction and passes through the airbag door 120, with its two ends fixed to the airbag frame 110. The pull strap 130 has a plurality of fracture holes 132 spaced apart along a first direction at the gap between the airbag door 120 and the airbag frame 110 on either side. Furthermore, the two edges of the airbag door 120 extending along the second direction are respectively connected to the airbag frame 110 by two fracture ribs 124. When the vehicle is in normal operation, the fracture rib 124 and the strap 130 provide basic support for the airbag door 120, while the airbag door 120 provides support for the instrument panel 300, preventing dents or incompleteness in the appearance of the instrument panel 300. When the airbag 200 deploys, the fracture rib 124 breaks under the pushing action of the airbag 200, and the strap 130 is effectively torn in the area of ​​the preset fracture hole 132. The side without the fracture hole 132 acts as the hinge of the airbag door 120, thereby providing the necessary channel for the smooth deployment of the airbag 200.

[0068] In some embodiments, there are two airbag doors 120, and a pull strap 130 extends along a second direction and passes through the two airbag doors 120 sequentially, with its two ends fixed to the airbag frame 110 respectively. The pull strap 130 has a plurality of break holes 132 spaced apart along a first direction between the two airbag doors 120, such as... Figure 11 As shown. Furthermore, the two edges of the airbag door 120 extending along the second direction are connected to the airbag frame 110 via two fracture ribs 124. During normal vehicle operation, the fracture ribs 124 and the strap 130 provide basic support for the airbag door 120, while the airbag door 120 provides support for the dashboard 300, preventing dents or incompleteness in the dashboard's appearance. When the airbag 200 deploys, the fracture ribs 124 break under the pushing action of the airbag 200, and the strap 130 is effectively torn in the pre-set fracture hole 132 area. The gap between the airbag door 120 and the airbag frame 110, and the area without the fracture hole 132, act as hinges for the airbag door 120, thus providing the necessary channel for the smooth deployment of the airbag 200.

[0069] In some embodiments, the pull strap 130, the airbag door 120, and the airbag frame 110 are integrally injection molded.

[0070] In some embodiments, the pull belt 130 is also provided with a plurality of limiting holes 131, which are intended to effectively limit the pull belt 130 during the integral injection molding process, so as to prevent the pull belt 130 from being displaced after the airbag 200 bursts, resulting in the preset fracture hole 132 area not being effectively torn.

[0071] In the above embodiments, the airbag door 120 in this application is only connected to the airbag frame 110 by a few fracture ribs 124, and the connection is relatively weak. If the pull strap 130 is not provided, the airbag door 120 may sink due to lack of support when the vehicle is in normal driving, resulting in dents or incomplete appearance of the dashboard 300. Therefore, by setting the interlayer pull strap 130, a basic support is provided for the airbag door 120, enhancing the connection strength between the airbag doors 120 and between the airbag door 120 and the airbag frame 110, ensuring the flatness of the dashboard 300. In addition, the pull strap 130 extends to both ends and is fixed to the airbag frame 110. When the airbag 200 deploys, it can act as a hinge to prevent the airbag door 120 from flying out and causing secondary injury to the occupant. More importantly, the design of the fracture hole 132 ensures that the pull strap 130 will inevitably be torn when the airbag 200 deploys, preventing the pull strap 130 from obstructing the deployment of the airbag 200 and ensuring its smooth deployment.

[0072] In some embodiments, the airbag door 120 is provided with a plurality of second welded reinforcing ribs 121 spaced apart on the side facing the instrument panel 300, and a second overflow channel 122 is provided between two adjacent second welded reinforcing ribs 121, with an overflow hole 123 provided in the second overflow channel 122. During assembly, the airbag door 120 frame is firmly welded to the instrument panel 300 using vibration friction welding technology.

[0073] Specifically, the second welded reinforcing ribs 121 do not intersect each other, and the second overflow channels 122 are interconnected.

[0074] It is worth noting that a weakening line is provided on the side of the dashboard 300 facing the vehicle floor in the area corresponding to the airbag door 120, so as to facilitate normal rupture when the airbag 200 is deployed, thereby providing the necessary channel for the smooth deployment of the airbag 200.

[0075] In some embodiments, the diameter of the overflow hole 123 is 6.0 mm. To avoid damaging the weld reinforcement, the overflow holes 123 should be evenly distributed rather than clustered in one place.

[0076] Naturally, the diameter of the overflow hole 123 can be adjusted appropriately according to specific circumstances, and this article does not impose any restrictions.

[0077] In the above embodiments, the airbag door 120 of this application partially melts the second welded reinforcing rib 121 by vibration friction welding. The molten material can flow directionally into the second overflow channel 122. After cooling and solidification, a firm connection is achieved between the airbag frame and the instrument panel 300, improving the connection strength and sealing performance. At the same time, compared with the grid-shaped welded reinforcing ribs of the traditional technology, the second overflow channel 122 and the overflow hole 123 provided inside it can accommodate excess molten material, effectively avoiding excessive accumulation of excess molten material that could overflow and contaminate the appearance of the instrument panel 300 or affect the assembly accuracy of surrounding components, thus ensuring the appearance quality and assembly reliability of the product.

[0078] Furthermore, this application also provides a specific embodiment of a vehicle, which includes a vehicle body, an instrument panel 300, an airbag 200, and an airbag frame assembly 100 as described above. The instrument panel 300 is fixedly installed in the interior space of the vehicle body, and the airbag frame assembly 100 is arranged on the side of the instrument panel 300 facing the bottom of the vehicle. The airbag 200 is fixed to the airbag frame assembly 100, thereby providing effective safety protection for passengers in the event of a vehicle collision. This embodiment improves the safety performance of the passenger compartment by optimizing the installation position of the airbag frame assembly 100, ensuring that it can quickly deploy and provide protection in an emergency.

[0079] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An airbag frame assembly for securing an airbag (200); characterized in that, The airbag frame assembly (100) includes an airbag frame (110), and the airbag frame (110) is fixed to a side of the instrument panel (300) facing the vehicle bottom; a mounting cavity (140) is penetratingly provided in the middle part of the airbag frame (110) along the thickness direction thereof; the airbag frame (110) is provided with a plurality of fixing seats (112), and the plurality of fixing seats (112) are arranged at intervals along the edge of the mounting cavity (140); the fixing seat (112) is provided with a fixing bolt (113) extending toward the vehicle bottom; The airbag (200) is embedded in the mounting cavity (140), the housing of the airbag (200) is provided with fixing screw holes adapted to the fixing bolts (113), the fixing screw holes are in one-to-one correspondence with the fixing bolts (113), and the fixing bolts (113) pass through the fixing screw holes and are fixed to the housing of the airbag (200).

2. The airbag frame assembly according to claim 1, characterized in that, A side of the airbag frame (110) facing the vehicle bottom is provided with a first reinforcing structure (111), and the first reinforcing structure (111) includes: A plurality of first reinforcing ribs (111a) extending and arranged along a first direction and a plurality of second reinforcing ribs (111b) extending and arranged along a second direction, and the plurality of first reinforcing ribs (111a) intersect with the plurality of second reinforcing ribs (111b) to form a mesh structure; Wherein, the fixing seat (112) is disposed at the intersection of the first reinforcing rib (111a) and the second reinforcing rib (111b).

3. The airbag frame assembly according to claim 2, characterized in that, The vertical distance between the end of the fixing seat (112) close to the vehicle floor and the vehicle floor is a, and the vertical distance between the side of the first reinforcing structure (111) close to the vehicle floor and the vehicle floor is b; where a < b; a plurality of third reinforcing ribs (112a) are disposed between the end of the fixing seat (112) close to the vehicle floor and the first reinforcing structure (111).

4. The airbag frame assembly according to claim 1, characterized in that, The airbag frame (110) further includes a first fixing portion (114), a second fixing portion (115) and a third fixing portion (116); the first fixing portion (114) is connected to the side wall of the defrosting air duct (500), and both the second fixing portion (115) and the third fixing portion (116) are connected to the instrument panel (300).

5. An airbag frame assembly according to claim 1, characterized in that, The fixing bolt (113) includes: A fixing cap (113a); A connecting portion (113b), one end of the connecting portion (113b) is connected to the fixing cap (113a); the diameter of the fixing cap (113a) is larger than the diameter of the connecting portion (113b); the connecting portion (113b) is provided with a plurality of convex ribs (113d); A screw portion (113c), the screw portion (113c) is disposed at an end of the connecting portion (113b) away from the fixing cap (113a); the screw portion (113c) is used for connecting the airbag (200); Wherein, the fixing cap (113a) and the connecting portion (113b) are disposed in the fixing seat (112).

6. An airbag frame assembly according to any one of claims 1 to 5, characterized in that, The airbag frame (110) is provided with a plurality of first welded reinforcing ribs (118) spaced apart on the side facing the instrument panel (300), and a first overflow channel (119) is provided between two adjacent first welded reinforcing ribs (118).

7. An airbag frame assembly according to any one of claims 1 to 5, characterized in that, The airbag frame assembly (100) also includes an airbag door (120) disposed in the mounting cavity (140) and fitted to the instrument panel (300); the airbag door (120) is connected to the airbag frame (110) by at least one fracture rib (124).

8. An airbag frame assembly according to claim 7, characterized in that, The airbag frame assembly (100) also includes a pull strap (130), which extends along a first direction or a second direction and passes through the airbag door (120). Both ends of the pull strap (130) extend out of the airbag door (120) and are fixed to the airbag frame (110). The pull strap (130) has a plurality of break holes (132) at the gap between the airbag door (120) and the airbag frame (110) on any side or at the gap between two adjacent airbag doors (120).

9. An airbag frame assembly according to claim 7, characterized in that, The airbag door (120) is provided with a number of second welded reinforcing ribs (121) spaced apart on the side facing the instrument panel (300), and a second overflow channel (122) is provided between two adjacent second welded reinforcing ribs (121), and an overflow hole (123) is provided in the second overflow channel (122).

10. A vehicle, characterized in that, Includes a vehicle body, an instrument panel (300), an airbag (200), and an airbag frame assembly (100) as described in any one of claims 1 to 9. The instrument panel (300) is disposed in the vehicle body, the airbag frame assembly (100) is disposed on the side of the instrument panel (300) facing the bottom of the vehicle, and the airbag (200) is fixed on the airbag frame assembly (100).

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