Airbag device and seat assembly

Abstract

The utility model relates to a kind of safety air bag devices, comprising: half-enclosing shell, accommodating space is defined by the half-enclosing shell;And the air bag assembly arranged in the accommodating space, wherein, one or more clamping structures are provided on the half-enclosing shell, the clamping structure is configured to be engaged with the foaming structure adjoining the safety air bag device;Wherein, one or more constraint structures are provided on the half-enclosing shell, and the air bag assembly is fixed to the constraint structure by restraint piece.In addition, the utility model further provides a seat assembly.

Description

Technical Field

[0001] This application relates to the field of airbag technology, and more particularly to an airbag device, especially a distal airbag device or a side airbag device. Furthermore, this application also relates to a seat assembly equipped with the aforementioned airbag device. Background Technology

[0002] With increasingly stringent requirements for automotive safety performance, remote airbags and side airbags, as key components for ensuring the safety of vehicle occupants, are being used more and more widely in automotive safety systems. Remote airbags are typically located on the side of the driver's seat near the center (the location varies depending on whether the vehicle is left- or right-hand drive), and they contain two large airbag chambers designed to protect the head and chest. In the event of a collision, the remote airbag inflates rapidly, forming a soft cushion to effectively reduce the impact force on the occupant's head and chest, while also reducing the risk of collisions between front-seat occupants and the risk of contact between occupants and the center console, seats, and door trim, significantly reducing the likelihood of injury and playing a crucial role in occupant safety. Side airbags are typically installed on the side of the backrest of the front seats. In the event of a side collision, the side airbags respond quickly and inflate, effectively dispersing and absorbing collision energy, reducing the direct impact force on the occupant's torso and pelvic area, and preventing contact between the occupant's body and hard body components such as the door and B-pillar, making them an important feature for ensuring occupant side safety.

[0003] Currently, the main types of remote and side airbags on the market are soft-shell airbags and rigid-shell airbags. Rigid-shell airbags, which use a box-shaped rigid plastic shell, integrate the gas generator, air bag, and other components into a modular unit within the rigid plastic shell. To ensure smooth deployment of the air bag upon detonation, this design requires tear lines and closure latches, but this makes the structure extremely complex and carries a high risk of failure. Furthermore, during air bag deployment, the rigid plastic shell is highly susceptible to fragmentation that can fly out, posing a potential threat to occupant safety.

[0004] As for soft-pack airbags, namely distal and side airbags that use soft fabric coverings, although the entire module is wrapped in soft fabric, they cannot be used in many situations due to differences in seat design among different manufacturers and limitations imposed by factors such as seat foaming requirements (e.g., insufficient foaming space) and frame design. Otherwise, it would cause localized seat collapse, severely affecting the appearance. Furthermore, soft-pack airbags typically use non-woven fabric to wrap the airbag to fix its shape and prevent dust. However, this design requires an additional bag-type guide structure on the seat to guide the airbag deployment. When the seat frame surface where the airbag is installed is uneven and the installation space is extremely limited, it is easy to cause bulges or dents on the seat surface, failing to meet the aesthetic requirements of car owners. While hard-shell airbags use plastic shells to wrap the airbag, achieving a better appearance after seat assembly and eliminating the need for a bag-type guide structure, their complex assembly structure presents numerous potential failure points in areas such as buckles, hinges, and tear lines, making reliability difficult to guarantee.

[0005] In some soft-pack airbag solutions, unwanted appearance defects such as bulges and dents appear on the seat surface. One possible cause is the unstable assembly state of the airbag within the shell. This unstable assembly state is usually closely related to the method of securing the airbag, such as the method of securing it with tape wrapped around the entire shell from the outside. In addition, the aforementioned unwanted appearance defects on the seat surface may also stem from an unstable fit between the airbag device and the seat foam structure.

[0006] It should be noted that the information presented in this section is intended to aid in understanding the background of this disclosure, and may contain content that is not known to those skilled in the art, and should not be regarded as a limitation on the prior art. Utility Model Content

[0007] Therefore, the purpose of this application is to provide an airbag device that overcomes at least one deficiency in the prior art, thereby providing beneficial effects in terms of reducing failure risk points, improving safety, ensuring seat appearance, reducing manufacturing costs, and / or improving assembly efficiency. Furthermore, this application also provides a seat assembly equipped with the aforementioned airbag device.

[0008] According to a first aspect of this application, an airbag device is provided, comprising: a semi-enclosed housing defining a receiving space; and an airbag assembly disposed within the receiving space, wherein one or more snap-fit ​​structures are provided on the semi-enclosed housing, the snap-fit ​​structures being configured to engage with a foam structure adjacent to the airbag device; wherein one or more restraint structures are provided on the semi-enclosed housing, and the airbag assembly is secured to the restraint structures by restraint members.

[0009] In some embodiments, the snap-fit ​​structure is configured as a rib structure extending from the inner side of the semi-enclosed housing toward the receiving space.

[0010] In some embodiments, the constraint structure is configured as a hook-like structure, a buckle-like structure, or a barb-like structure extending from the inner side of the semi-enclosed housing toward the receiving space.

[0011] In some embodiments, the constraint element is configured as a fabric strip or adhesive tape, and an opening for fixing to the constraint structure is formed on the fabric strip or adhesive tape.

[0012] In some embodiments, a plurality of snap-fit ​​structures spaced apart from each other are formed in the edge region of the semi-enclosed housing outside the airbag assembly; and / or a plurality of constraint structures spaced apart from each other are formed in the edge region of the semi-enclosed housing outside the airbag assembly.

[0013] In some embodiments, the semi-enclosed shell includes a first shell portion and a second shell portion, the second shell portion being bent at an angle to transition into the first shell portion, wherein the first shell portion and the second shell portion define a shell structure that is open on all four sides.

[0014] In some embodiments, the four-sided open shell structure is configured as an L-shaped shell structure or a U-shaped shell structure.

[0015] In some embodiments, the first housing portion is designed to be wider than the second housing portion.

[0016] In some embodiments, the semi-enclosed housing is configured as a semi-enclosed housing without tear lines and snaps, and the airbag assembly includes an airbag and a gas generator, wherein the airbag is ejected directly outward toward the open surface of the semi-enclosed housing after the gas generator is detonated.

[0017] In some embodiments, at least a portion of the snap-fit ​​structure and at least a portion of the constraint structure are arranged on the first housing portion.

[0018] In some embodiments, when the gas generator is not ignited, the second housing portion is bent at an angle between 60 and 120 degrees relative to the first housing portion.

[0019] In some embodiments, the airbag assembly abuts against the inner side of the first housing portion on a first side and against the inner side of the second housing portion on a second side.

[0020] In some embodiments, a hinge portion is provided between the first housing portion and the second housing portion.

[0021] In some embodiments, the semi-enclosed housing is configured as a one-piece housing structure.

[0022] In some embodiments, the airbag device is configured as a distal airbag device or a side airbag device.

[0023] In some embodiments, reinforcing ribs are formed on the inner side of the semi-enclosed housing, wherein the reinforcing ribs include: a plurality of first reinforcing ribs spaced apart from each other and extending along a first direction; and / or a plurality of second reinforcing ribs spaced apart from each other and extending along a second direction at an angle to the first direction.

[0024] According to a second aspect of this application, a seat assembly is provided, the seat assembly including a seat frame, an airbag device mounted on the seat frame, and a foam structure adjacent to the airbag device, the airbag device being configured as an airbag device according to some embodiments of this application, wherein a slot is provided on the foam structure, and a snap-fit ​​structure of the semi-enclosed housing of the airbag device is configured to engage into the slot of the foam structure. Attached Figure Description

[0025] The accompanying drawings, which form part of this specification, illustrate embodiments of the present invention and, together with the specification, serve to explain the principles of the present invention.

[0026] Figure 1 A partial schematic diagram of the vehicle is shown;

[0027] Figure 2 An exemplary perspective view of an airbag device according to some embodiments of this application is shown;

[0028] Figure 3 and Figure 4 Views of the semi-enclosed housing of an airbag device according to some embodiments of this application are shown respectively;

[0029] Figure 5 This invention provides a schematic diagram illustrating the assembly of an airbag device with a seat foam structure according to some embodiments of this application.

[0030] Figure 6 A schematic diagram of a seat assembly according to some embodiments of this application is shown.

[0031] Note that in the embodiments described below, the same reference numerals are sometimes used across different figures to denote the same parts or parts with the same function, and repeated descriptions are omitted. In some cases, similar reference numerals and letters are used to denote similar items, so once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0032] For ease of understanding, the positions, dimensions, and ranges of the structures shown in the accompanying drawings and other documents may not represent actual positions, dimensions, and ranges. Therefore, this utility model is not limited to the positions, dimensions, and ranges disclosed in the accompanying drawings and other documents. Detailed Implementation

[0033] The present application will now be described with reference to the accompanying drawings, which illustrate several embodiments of the present application. However, it should be understood that the present application can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present application more complete and to fully illustrate the scope of protection of the present application to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0034] In the various embodiments described, the same reference numerals or element names are used for the same elements, and the disclosure contained throughout the specification can be applied semantically to elements with the same reference numerals or element names. Furthermore, in the various embodiments, the number, implementation, and / or arrangement of elements are not limited to the examples shown, but other numbers, implementations, and / or arrangements can be selected according to actual needs.

[0035] In this document, spatial relation terms such as "up," "down," "left," "right," "front," "back," "high," and "low" are used to describe the relationship between one feature and another in the accompanying drawings. It should be understood that spatial relation terms include not only the orientation shown in the drawings but also different orientations of the device during use or operation. For example, when the device in the drawings is inverted, a feature previously described as "below" other features can now be described as "above" other features. The device can also be oriented in other ways (rotated 90 degrees or in other orientations), in which case the relative spatial relationships will be interpreted accordingly.

[0036] In this document, the term “A or B” includes both “A and B” and “A or B”, rather than exclusively including only “A” or only “B”, unless otherwise specified.

[0037] In this document, the terms "illustrative" or "exemplary" mean "used as an example, instance, or illustration," and not as a "model" to be precisely copied. Any implementation described herein by example is not necessarily to be construed as preferred or advantageous over other implementations. Furthermore, this application is not limited to any stated or implied theory given in the foregoing technical field, background art, utility model content, or specific embodiments.

[0038] In this document, the term “substantially” means any minor variation caused by defects in design or manufacturing, tolerances of devices or components, environmental influences and / or other factors.

[0039] In this article, the term "part" can refer to any proportion. For example, it can be greater than 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, or 90%.

[0040] Additionally, terms such as “first,” “second,” etc., may be used in this document for reference purposes only and are not intended to be limiting. For example, unless the context clearly indicates otherwise, the words “first,” “second,” and other such numerical terms relating to structures or elements do not imply order or sequence.

[0041] Some embodiments of this application will now be described in more detail with reference to the accompanying drawings.

[0042] like Figure 1 The diagram shows a partial schematic of vehicle 100. Airbag devices 40, particularly distal airbags and / or side airbags, are installed within vehicle 100 to ensure passenger safety in vehicle collisions, such as side collisions. It should be understood that vehicle 100 in this application can be broadly interpreted as including, but not limited to, land vehicles, such as various types of motor vehicles (especially cars, commercial vehicles, buses, etc.), water vehicles, and air vehicles, as long as there is a risk of side collision.

[0043] It should be understood that the airbag device 40 of this application may involve other types of airbag devices, and is not limited to distal airbag devices and side airbag devices. The following describes the airbag device of this application in detail only using a distal airbag device as an example.

[0044] In a side-impact collision, a "remote airbag" typically refers to an airbag installed inside the vehicle to protect occupants during a side impact. A side-impact collision occurs when a vehicle makes lateral contact with another vehicle or a fixed object. In a side-impact collision, the side where the point of impact is located is called the proximal end, and the side opposite the point of impact is called the distal end. In the industry, a remote airbag device can also be referred to as a central airbag device, and it is typically installed as a front center airbag on the driver's seat 10, for example, on the inside of the seat back. It should be understood that a remote airbag device can also be installed in other areas on the distal side of the vehicle. In some embodiments, the remote airbag device 40 can be arranged in the central space between the driver's seat 10 and the front passenger seat 30, for example, in the area of ​​the center console 20. In other embodiments, the remote airbag device 40 can be installed as a rear center airbag on a passenger seat, for example, on the inside of the seat back. In other embodiments, the remote airbag device 40 can be installed as a rear center airbag in the central space between the two rear passenger seats.

[0045] Reference Figures 2 to 5 The diagrams show schematic representations of an airbag device 40 and its semi-enclosed housing 50 according to some embodiments of the present application.

[0046] Figure 2 An exemplary perspective view of an airbag device 40 according to some embodiments of this application is shown. Figure 2 As shown, the airbag device 40 may include a semi-enclosed housing 50 and an airbag assembly 60. The semi-enclosed housing 50 may be configured as a so-called rigid plastic housing, such as a rigid plastic housing made of TPO material, thereby at least partially avoiding a series of drawbacks associated with soft-pack housings. Advantageously, the semi-enclosed housing 50 may employ a one-piece molded plastic housing structure, thereby simplifying the manufacturing process, reducing assembly steps, and lowering manufacturing costs.

[0047] The semi-enclosed housing 50 defines a receiving space within which the airbag assembly 60 can be installed. The airbag assembly 60 may include an airbag 61 and a gas generator 62. The gas generator 62 is typically connected to the airbag 61 via, for example, a specific mounting interface or mechanism to form the airbag assembly 60. In some embodiments, to ensure efficient gas filling of the airbag 61 and to prevent gas leakage, the connection between the gas generator 62 and the airbag 61 may use materials such as sealing gaskets and / or sealant to ensure airtightness at the connection point.

[0048] It should be understood that the semi-enclosed shell involved in this application can be a shell structure that is substantially open on all four sides, or it can be a shell structure that is substantially open on three sides. In the illustrated embodiments, a semi-enclosed shell in the form of a shell structure that is substantially open on all four sides is described as an example, but this application is not limited to these exemplary embodiments.

[0049] Figure 3 and Figure 4 Views of the semi-enclosed housing 50 of an airbag device 40 according to some embodiments of this application are shown. Figure 3 and 4 As shown, the semi-enclosed shell 50 may include a first shell portion 51 and a second shell portion 52, the second shell portion 52 being angled to transition into the first shell portion 51. Advantageously, the first shell portion 51 and the second shell portion 52 define a shell structure that is open on four sides. "Open on four sides" means that the shell structure, except for the first side where the first shell portion 51 is located and the second side where the second shell portion 52 is located, is substantially open on the other four sides, i.e., substantially unobstructed by the shell. "Substantially open" can be understood as the shell structure being mostly open on these sides, i.e., substantially unobstructed by the shell, but allowing for a small portion of shell coverage.

[0050] exist Figure 2 In the illustrated embodiment, the air bag assembly 60 can abut against the inner side of the first housing portion 51 on the first side and against the inner side of the second housing portion 52 on the second side, thereby ensuring the stability of the air bag 61 within the semi-enclosed housing 50.

[0051] This application, through its four-sided open shell structure, eliminates the tear lines and buckle designs required in traditional rigid-shell airbag closed structures, directly reducing common failure points such as tear line breakage and buckle detachment, effectively lowering the risk of failure. Simultaneously, the four-sided open shell structure ensures that there is virtually no risk of debris flying out when the airbag 61 deploys, effectively improving safety. In other words, this application proposes a semi-enclosed shell 50 without tear lines or buckles, allowing the airbag 61 to eject directly outwards towards the open side of the semi-enclosed shell 50 after the gas generator 62 detonates. The absence of tear lines and buckles avoids the problem of the airbag 61 failing to deploy properly due to tear line failure or buckle detachment in traditional structures, reducing the risk of failure and eliminating the risk of secondary injury to occupants from flying debris, thus improving safety.

[0052] Furthermore, this application utilizes a four-sided open shell structure, reducing the amount of manufacturing materials used, lowering product costs, and effectively meeting the demand for lightweight products. Simultaneously, the simplified design, eliminating tear lines and snap-fit ​​fasteners, improves product manufacturing efficiency.

[0053] In some embodiments, the four-sided open semi-enclosed shell 50 can be configured as an L-shaped shell structure. That is, the semi-enclosed shell 50 can be constructed solely from a first shell portion 51 and a second shell portion 52 bent at an angle to each other. The first shell portion 51 and the second shell portion 52 can each be advantageously configured as substantially panel-shaped shell sections. The first shell portion 51 can be designed to be wider than the second shell portion 52, especially by more than 20%, to better accommodate the airbag 61. The L-shaped shell structure can advantageously fit snugly to the internal structure of the seat. During installation, the second shell portion 52 can be fixed to the seat frame by bolts or the like, while the first shell portion 51 can be directly fitted to the seat upholstery, ensuring a flat seat appearance. Directly fitting the first shell portion 51 to the seat upholstery avoids localized seat collapse caused by seat foaming requirements (e.g., insufficient foaming space) during soft-pack airbag installation.

[0054] In some embodiments, when the gas generator 62 is not ignited, the angle at which the second housing portion 52 is bent relative to the first housing portion 51 can be, for example, between 60 and 120 degrees. It should be understood that the above angles are merely exemplary and not limiting. By selecting a suitable bending angle, a compact housing structure can be achieved that meets the interior space layout requirements of the seat while allowing sufficient space for the airbag to deploy.

[0055] In some embodiments, a hinge portion 53 may be provided between the first housing portion 51 and the second housing portion 52. When the air bag 61 is deployed, the first housing portion 51 can be further and more efficiently folded outward relative to the second housing portion 52, providing the air bag 61 with greater freedom of deployment.

[0056] In a substantially three-sided open shell structure (not shown), the semi-enclosed shell 50 may include a first shell portion, a second shell portion, and a third shell portion. These shell portions, which are bent at angles to each other, define a substantially three-sided open shell structure, such as a U-shaped shell structure. The airbag assembly can then abut against the inner surface of the corresponding shell portion on each of the three sides, thereby ensuring the stability of the airbag 61 within the semi-enclosed shell 50.

[0057] Figure 5 A schematic diagram of the assembly of an airbag device 40 and a seat foam structure 80 according to some embodiments of this application is shown. Figure 2-4 And reference Figure 5As shown, to avoid unwanted surface defects that could compromise the smoothness and aesthetics of the seat, this application further proposes the following: To improve the stability of the fit between the airbag device 40 and the seat foam structure 80, one or more snap-fit ​​structures 71 are provided or integrally formed on the semi-enclosed housing 50. These snap-fit ​​structures 71 are configured to engage with the foam structure 80 adjacent to the airbag device 40. Through mutual constraint between the structures, the relative displacement between the airbag device 40 and the foam structure 80 during use is limited. This stable fit prevents deformation of the seat's internal structure due to loosening or displacement of components, thereby fundamentally preventing surface defects such as bulges and dents, and ensuring the long-term integrity of the seat's appearance.

[0058] Furthermore, to improve the stability of the airbag assembly 60 within the semi-enclosed housing 50, this application further provides or integrally forms one or more constraint structures 72 on the semi-enclosed housing 50. The airbag assembly 60 can be fixed to the constraint structure 72 by constraint members 73, such as... Figure 2-5 As shown, the airbag assembly 60, as a core functional component of the airbag device 40, directly affects the deployment performance and safety of the airbag 61 through its assembly position and state within the semi-enclosed housing 50. By cooperating with the constraint structure 72 and the constraint member 73 (mentioned later), the airbag assembly 60 can be securely fixed in its preset assembly position within the semi-enclosed housing 50, limiting its shaking and displacement during transportation, storage, and / or seat use, ensuring that the airbag assembly 60 is always in a good working posture.

[0059] In some embodiments, such as Figure 2-5 As shown, the snap-fit ​​structure 71 can be configured as a rib structure extending from the inner side of the semi-enclosed housing 50 toward the receiving space. This rib structure adopts a protruding design, and its extension direction is perpendicular to or at a predetermined angle to the inner side of the semi-enclosed housing 50, ensuring that the rib structure can penetrate deeply into the adjacent foam structure 80, such as into the slot 82 provided for this purpose, forming an effective interlocking effect. The cross-section of the rib structure can be designed in various shapes such as rectangle, trapezoid, and triangle according to actual stress requirements and assembly space.

[0060] In some embodiments, to further improve the mating stability of the snap-fit ​​structure 71 and the foam structure 80, a plurality of snap-fit ​​structures 71 spaced apart from each other are formed in the edge region of the semi-enclosed shell 50 outside the air bag assembly 60. As the main contact area between the semi-enclosed shell 50 and the foam structure 80, the distribution of multiple snap-fit ​​structures 71 in this area enables more comprehensive constraint on the mating interface between the two, preventing loosening in localized areas due to insufficient constraint.

[0061] In some embodiments, at least a portion of the rib structures can be arranged in a row, substantially aligned with each other. In some embodiments, at least a portion of the snap-fit ​​structures 71 can be disposed on the outer side of the semi-enclosed housing 50, for example, on the first housing portion 51 facing the seat cover. The first housing portion 51, as the adjacent area between the semi-enclosed housing 50 and the seat cover, directly affects the surface morphology of the seat cover due to the stability of its fit with the foam structure 80. By disposing of the snap-fit ​​structure 71 in this area, the bonding strength between the first housing portion 51 and the foam structure 80 can be strengthened, preventing localized deformation of the seat cover caused by loosening of components in this area.

[0062] In some embodiments, such as Figure 2-5 As shown, the constraint structure 72 is configured as a hook-like structure, a buckle-like structure, or a barb-like structure extending from the inner side of the semi-enclosed housing 50 toward the receiving space. In some embodiments, a plurality of constraint structures 72 spaced apart from each other are formed in the edge region of the semi-enclosed housing 50 outside the airbag assembly 60. In some embodiments, at least a portion of the constraint structures 72 may be provided on the first housing portion 51 of the semi-enclosed housing 50 facing outward, for example toward the seat cover.

[0063] In some embodiments, the constraint member 73 is configured as a fabric strip or adhesive tape. The fabric strip may be made of abrasion-resistant and tensile-resistant materials such as high-strength polyester fiber or nylon; the adhesive tape may be, for example, high-strength industrial adhesive tape. Openings for fixing to the constraint structure 72 may be formed on the fabric strip or adhesive tape. The shape of the opening may be designed as circular, elliptical, or rectangular depending on the shape of the constraint structure 72. The size of the opening must match the size of the constraint structure 72 to ensure smooth assembly while avoiding loosening due to excessive clearance.

[0064] In some embodiments, such as Figure 2 and 5 As shown, the constraint member 73 can be structured with one end fixed or formed on the air bag assembly 60, and the other end being a fixed end with an opening. Specifically, one end of the fabric strip can be firmly connected to the edge or a preset fixing point of the air bag assembly 60 by sewing, hot-press welding, etc., while one end of the adhesive tape can be directly pasted to a designated position on the air bag assembly 60. The other end of the constraint member 73 has a preset number of openings for connecting with the constraint structure 72 on the semi-enclosed shell 50. The advantage of this fixing method is that during assembly, only the free end of the constraint member 73 needs to be manipulated to complete the connection with the constraint structure 72, reducing the difficulty of overall positioning of the constraint member 73. At the same time, the structure with one end fixed can also ensure that the constraint member 73 and the air bag assembly 60 always remain relatively fixed, avoiding fixation failure caused by displacement of the constraint member 73.

[0065] In other embodiments, the constraint member 73 adopts a structure with openings at both ends. In this structure, both ends of the constraint member 73 are machined with openings that match the constraint structure 72. During use, the constraint member 73 needs to be wrapped around a predetermined portion of the airbag assembly 60 so that the openings at both ends respectively engage with the corresponding constraint structures 72 on the semi-enclosed housing 50. Through this double fixation at both ends, a ring-shaped constraint on the airbag assembly 60 can be formed, further improving the fixation stability and preventing excessive displacement of the airbag assembly 60 in a specific direction.

[0066] During installation, thanks to the open structure, operators only need to wrap the constraint 73 around the air bag assembly 60 and fix the constraint 73 on the constraint structure 72 to complete the fixation. The operation is simple and convenient, greatly improving assembly efficiency.

[0067] In some embodiments, such as Figure 3 and 4 As shown, reinforcing ribs 56 can be formed on the inner surface of the semi-enclosed housing 50. The reinforcing ribs 56 may include multiple first reinforcing ribs spaced apart from each other, extending along a first direction, such as the length direction; and / or multiple second reinforcing ribs spaced apart from each other, extending along a second direction at an angle to the first direction, such as the width direction. The extension of the reinforcing ribs 56 in two intersecting directions, particularly in directions substantially perpendicular to each other, can form a mesh-like reinforcing rib structure, effectively enhancing the strength and rigidity of the semi-enclosed housing 50 and ensuring the stability of the semi-enclosed housing 50 during the deployment of the air bag 61. Additionally or alternatively, the second housing portion 52 of the semi-enclosed housing 50 may be provided with fixing holes 54 through which studs of the gas generator 62 can pass. Advantageously, the second housing portion 52 may be formed with bosses 55 at the fixing holes 54, thereby enhancing structural strength and ensuring the installation stability of the gas generator 62.

[0068] Figure 6 A schematic diagram of a seat assembly 80 according to some embodiments of this application is shown. Figure 6 As shown, the seat assembly 80 may include a seat 10 (more precisely, a seat frame) and an airbag device 40, or a distal airbag device, mounted on the seat frame. The airbag device 40 is securely connected to the seat frame via a connecting plate and remains substantially parallel to the seat back. The semi-enclosed housing 50 of the airbag device 40 may adopt an L-shaped housing structure, with its first housing portion 51, as the largest surface, configured to fit against the seat upholstery for support, thereby ensuring a flat seat appearance. The second housing portion 52 of the semi-enclosed housing 50 may be configured to be mounted on the seat frame, achieving reliable fixation of the airbag device 40 to the seat.

[0069] like Figure 5 and 6 As shown, the seat assembly 80 may include a foam structure 80 adjacent to the airbag device 40. To further improve the stability of the engagement between the snap-fit ​​structure 71 and the foam structure 80, a slot 82 corresponding to the snap-fit ​​structure 71 may be provided or formed on the foam structure 80. The snap-fit ​​structure 71 of the semi-enclosing housing 50 of the airbag device 40 may be configured to engage with the slot 82 of the foam structure 80.

[0070] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and not for limiting the scope of this application. The various embodiments disclosed herein can be combined in any way without departing from the spirit and scope of this application. Those skilled in the art should also understand that various modifications can be made to the embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. An airbag device, characterized in that, The airbag device includes: A semi-enclosed shell, defining an accommodating space; and The airbag assembly arranged within the containment space, One or more snap-fit ​​structures are provided on the semi-enclosed housing, and the snap-fit ​​structures are configured to engage with the foam structure adjacent to the airbag device. One or more constraint structures are provided on the semi-enclosed shell, and the air bag assembly is fixed to the constraint structure by constraint members.

2. The airbag device according to claim 1, characterized in that, The snap-fit ​​structure is configured as a rib structure extending from the inner side of the semi-enclosed housing toward the receiving space.

3. The airbag device according to claim 1, characterized in that, The constraint structure is configured as a hook-like structure, an inverted structure, or a barb-like structure extending from the inner side of the semi-enclosed shell toward the receiving space.

4. The airbag device according to claim 1, characterized in that, The constraint element is configured as a fabric strip or adhesive tape, and an opening for fixing to the constraint structure is formed on the fabric strip or adhesive tape.

5. The airbag device according to claim 1, characterized in that, Multiple interlocking structures spaced apart from each other are formed in the edge region of the semi-enclosed housing outside the airbag assembly; and / or Multiple constraint structures spaced apart from each other are formed in the edge region of the semi-enclosed shell outside the airbag assembly.

6. The airbag device according to any one of claims 1 to 5, characterized in that, The semi-enclosed shell includes a first shell portion and a second shell portion, wherein the second shell portion is bent at an angle to transition into the first shell portion, and wherein the first shell portion and the second shell portion define a shell structure that is open on all four sides.

7. The airbag device according to claim 6, characterized in that, The four-sided open shell structure is configured as an L-shaped shell structure or a U-shaped shell structure.

8. The airbag device according to claim 6, characterized in that, The first housing portion is designed to be wider than the second housing portion.

9. The airbag device according to claim 6, characterized in that, The semi-enclosed housing is configured as a semi-enclosed housing without tear lines and clips, and the air bag assembly includes an air bag and a gas generator, wherein the air bag is ejected directly outward toward the open surface of the semi-enclosed housing after the gas generator is detonated.

10. The airbag device according to claim 6, characterized in that, At least a portion of the snap-fit ​​structure and at least a portion of the constraint structure are arranged on the first housing portion.

11. The airbag device according to claim 6, characterized in that, When the gas generator is not ignited, the angle at which the second housing portion is bent relative to the first housing portion is between 60 and 120 degrees.

12. The airbag device according to claim 6, characterized in that, The airbag assembly is attached to the inner side of the first housing portion on the first side and to the inner side of the second housing portion on the second side.

13. The airbag device according to claim 6, characterized in that, A hinge portion is provided between the first housing portion and the second housing portion.

14. The airbag device according to any one of claims 1 to 5, characterized in that, The semi-enclosed shell is configured as a one-piece shell structure.

15. The airbag device according to any one of claims 1 to 5, characterized in that, The airbag device is configured as a distal airbag device or a side airbag device.

16. The airbag device according to any one of claims 1 to 5, characterized in that, A reinforcing rib is formed on the inner side of the semi-enclosed shell, wherein the reinforcing rib includes: A plurality of first reinforcing ribs spaced apart from each other, the plurality of first reinforcing ribs extending along a first direction; and / or Multiple second reinforcing ribs spaced apart from each other extend along a second direction at an angle to the first direction.

17. A seat assembly, the seat assembly comprising a seat frame, an airbag device mounted on the seat frame, and a foam structure adjacent to the airbag device, characterized in that, The airbag device is configured as an airbag device according to any one of claims 1 to 16, wherein a slot is provided on the foam structure, and the snap-fit ​​structure of the semi-enclosed shell of the airbag device is configured to engage with the slot of the foam structure.

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