Guiding device for safety air bag, safety air bag assembly, vehicle seat and vehicle

Abstract

The utility model relates to a guide device for an airbag (20) for protecting an occupant located on a vehicle seat (100), the guide device (10) comprising: a guide device support (1) which is designed to receive the airbag and which can be mounted on a seat back (110) of the vehicle seat; and an airbag guide (2) which is arranged on the guide support and can be moved between a stowed position in which the airbag guide is in the undeployed state and an open position in which the airbag guide is in the undeployed state. The airbag is transferred from a stowed position to an open position before and / or when the airbag is deployed, and is guided during inflation and deployment of the airbag. The utility model further relates to an airbag assembly, a vehicle seat and a vehicle.

Description

Technical Field

[0001] The present invention relates generally to the technical field of vehicle safety systems, and more particularly to a guide device for an airbag, an airbag assembly, a vehicle seat, and a vehicle. Background Art

[0002] With the development of automobile intelligence, automatic driving or unmanned driving technology, automobile manufacturers have introduced zero-gravity seats to realize other possible sitting postures for drivers and passengers besides the normal sitting posture, such as working posture and leisure posture. In the working posture, the seat back can be adjusted to tilt back up to about 45 degrees; in the leisure posture, the seat back can be adjusted to tilt back 60 degrees or even more. However, once the vehicle is inevitably involved in a collision, existing technologies or traditional vehicle safety systems are difficult to protect drivers and passengers in working and leisure sitting postures, and may even cause more serious injuries to the drivers and passengers.

[0003] In order to achieve effective safety protection for drivers and passengers, especially those in working and leisure sitting positions, a "headgear type" airbag protection device arranged on a vehicle seat is proposed, so that when the driver and passengers are in working sitting positions (e.g., half-lying, upright) and leisure sitting positions (e.g., fully lying), when the vehicle collides, effective protection is provided for the driver and passengers, thereby reducing the damage to the driver and passengers. Such an airbag protection device is known, for example, from the applicant's own CN117284214A, CN117841894A and CN117622040A. Such an airbag protection device can be arranged on the seat back of a vehicle seat and deployed in the event of a collision to protect the driver and passengers on the vehicle seat.

[0004] However, there may be problems when equipping existing vehicle seats with such an airbag protection device. On the one hand, the structure of existing vehicle seats may not be well adapted to the headgear airbag protection device; on the other hand, when the headgear airbag protection device is arranged on the vehicle seat, challenges are faced in terms of the overall shape of the vehicle seat, especially the seat height.

[0005] Therefore, a solution that can address the above problems is urgently needed. Utility Model Content

[0006] The purpose of the present application is to provide a guide device for an airbag, an airbag assembly, a vehicle seat and a vehicle, which can overcome at least one defect in the prior art, thereby in particular being able to achieve as much as possible a balance between the smooth deployment of the airbag and the overall shape and size requirements of the vehicle seat.

[0007] According to a first aspect of the present application, a guide device for an airbag is provided, wherein the airbag is used to protect an occupant on a vehicle seat. The guide device comprises: a guide device bracket, the guide device bracket is configured to accommodate the airbag, and the guide device bracket is configured to be installed on a seat back of a vehicle seat; and an airbag guide mechanism, the airbag guide mechanism is arranged on the guide device bracket and can move between a stowed position and an unfolded position, the airbag guide mechanism is in the stowed position when the airbag is not deployed, the airbag guide mechanism is configured to transfer from the stowed position to the unfolded position before and / or when the airbag is deployed, and guide the airbag during the expansion and deployment of the airbag.

[0008] According to one embodiment of the present application, the airbag guide mechanism has a guide surface for the airbag, and in the open position of the airbag guide mechanism, the guide surface forms an angle of 15° to 60°, preferably 20° to 40°, for example 30° with the main extension direction of the seat back.

[0009] According to one embodiment of the application, in the open position of the airbag guide, the upper edge of the airbag guide extends beyond the top of the head of 95% of the dummies sitting on the vehicle seat or is flush with the top of the head of 95% of the dummies sitting on the vehicle seat.

[0010] According to an embodiment of the present application, the airbag guide mechanism comprises a guide flap, which is arranged on a guide device bracket and can be pivoted between a stowed position and an open position.

[0011] According to one specific embodiment of the application, the airbag guide comprises retaining means which are designed to retain the guide flap in a retracted position in a non-deployed state of the airbag.

[0012] According to one embodiment of the present application, the retaining device is configured as a preload spring, and the preload spring is configured to preload the guide flap toward the retracted position. In other embodiments, the retaining device can be configured as a snap-on, magnetic, or break-off retaining device.

[0013] According to an embodiment of the present application, the guide device includes a limiting structure, and the limiting structure is used to limit the opening position of the guide flip cover.

[0014] According to one embodiment of the present application, the limiting structure includes a first limiting surface provided on the guide device bracket and a second limiting surface provided on the guide flap, and the opening position of the guide flap is limited by the abutment between the first limiting surface and the second limiting surface.

[0015] According to an embodiment of the present application, the guide device bracket has a receiving groove for the airbag, and the guide flap at least partially covers an opening of the receiving groove in the front-rear direction in the retracted position.

[0016] According to one embodiment of the present application, the airbag guide mechanism is arranged in the region of a front edge or a rear edge of the receiving groove.

[0017] According to an embodiment of the present application, the receiving groove has a C-shaped, U-shaped or V-shaped cross section.

[0018] According to one specific embodiment of the application, the guide device holder has an elongated extension which at least partially follows the upper edge and the side edges of the seat back of the vehicle seat.

[0019] According to one embodiment of the present application, when installed on a vehicle seat, the upper edge of the guide device bracket is not lower than the topmost part of the headrest of the vehicle seat, and / or the lateral width of the guide device bracket is greater than or equal to the lateral width of the headrest of the vehicle seat.

[0020] According to an embodiment of the present application, the airbag guide mechanism is arranged on the top or side of the guide device bracket.

[0021] According to an embodiment of the present application, the guide device includes a plurality of airbag guide mechanisms respectively arranged at different positions of the guide device bracket. For example, a plurality of airbag guide mechanisms can be arranged at different positions of the guide device bracket along the elongated extension direction of the guide device bracket.

[0022] According to a second aspect of the present application, an airbag module is provided, wherein the airbag module includes an airbag and a guide device for an airbag according to the first aspect of the present application.

[0023] According to one embodiment of the present application, a folded airbag is accommodated in a guide device holder of the guide device, wherein the folded airbag comprises at least one Z-shaped fold.

[0024] According to one embodiment of the present application, the airbag includes at least one Z-shaped fold at least in a region corresponding to the airbag guide mechanism.

[0025] According to one embodiment of the present application, the airbag includes at least one pair of symmetrical Z-shaped folds in a region corresponding to the airbag guide mechanism.

[0026] According to a third aspect of the present application, a vehicle seat is provided, wherein the vehicle seat comprises the guide device for an airbag according to the first aspect of the present application, or comprises the airbag assembly according to the second aspect of the present application.

[0027] According to a fourth aspect of the present application, a vehicle is provided, wherein the vehicle comprises the vehicle seat according to the third aspect of the present application.

[0028] Other features of the present application are derived from the drawings and the specific embodiments. All the features and feature combinations mentioned above in the specification and the features and feature combinations mentioned below in the specific embodiments and / or shown separately in the drawings can be used not only in the corresponding given combination, but also in other combinations, or can be used alone. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] After reading the following detailed description in conjunction with the accompanying drawings, various aspects of the present application will be better understood, in which:

[0030] Figure 1 and Figure 2 Schematically showing a guide device for an airbag according to some embodiments of the present application installed on a vehicle seat;

[0031] Figure 3 Schematically illustrating the deployment process of an airbag assembly according to some embodiments of the present application;

[0032] Figure 4 Schematically shows Figure 1 An exploded view of an airbag guide mechanism of a guide device for an airbag;

[0033] Figure 5 Schematically shows Figure 4 transition of the air bag guide mechanism from a stowed position to an deployed position;

[0034] Figure 6 Schematically shows Figure 1 An exploded view of a guide device for an air bag;

[0035] Figure 7 Schematically shows Figure 1 of guides for airbags and 95% dummies located on vehicle seats;

[0036] Figure 8 Schematically shows Figure 1 A front view of a guide device for an air bag;

[0037] Fig. 9 Schematically shows Figure 1A guide device bracket for a guide device of an air bag;

[0038] Fig.10 Schematically shown in cross-sectional view Figure 1 A guide device for an air bag;

[0039] Fig.11 Schematically illustrating a guide device for an airbag according to other embodiments of the present application;

[0040] Fig.12 An airbag of an airbag assembly according to some embodiments of the present application is schematically shown. DETAILED DESCRIPTION

[0041] The present application will be described below with reference to the accompanying drawings, wherein the accompanying drawings illustrate several embodiments of the present application. However, it should be understood that the present application can be presented in a variety of 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 fully explain 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.

[0042] It should be understood that the terms used in the specification are only used to describe specific embodiments and are not intended to limit the present application. All terms (including technical terms and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of simplicity and / or clarity, well-known functions or structures may not be described in detail.

[0043] The singular forms "a", "said" and "the" used in the specification include plural forms unless clearly indicated. The terms "include", "comprise" and "contain" used in the specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features. The term "and / or" used in the specification includes any and all combinations of one or more of the relevant listed items.

[0044] In the specification, when an element is referred to as being “on,” “attached to,” “connected to,” “coupled to,” or “contacting” another element, etc., the element may be directly on, attached to, connected to, coupled to, or contacting another element, or intervening elements may be present.

[0045] In the specification, spatial relational terms such as "upper", "lower", "front", "back", "top", "bottom", etc. may describe the relationship of one feature to another feature in the drawings. It should be understood that the spatial relational terms include different orientations of the device in use or operation in addition to the orientation shown in the drawings. For example, when the device in the drawings is turned over, features previously described as being "below" other features may now be described as being "above" the other features. The device may also be otherwise oriented (rotated 90 degrees or in other orientations), and the relative spatial relationships will be interpreted accordingly.

[0046] Figure 1 and Figure 2 A guide device 10 for an airbag 20 according to some embodiments of the present application is schematically shown, which is installed on a vehicle seat 100. The airbag 20 is used to protect an occupant on the vehicle seat 100. Such an airbag 20 can be arranged on a seat back 110 of the vehicle seat 100 and expand forward from the seat back 110 to protect an occupant on the vehicle seat 100 when a collision occurs. For example, reference can be made to Figure 3 For the sake of clarity, only a portion of the seat back 110 is shown, and only the frame or sheet metal of the seat back 110 is shown without showing the seat foam and covering fabric. Within the scope of the present application, the term "occupant" may include the driver and other occupants other than the driver. Within the scope of the present application, the vehicle seat may be a seat for the driver in the vehicle and / or a seat for other occupants other than the driver.

[0047] like Figure 1 and Figure 2 As shown, the guide device 10 of the airbag 20 may include a guide device bracket 1, which is configured to accommodate the airbag 20. The guide device bracket 1 is configured to be installed on the seat back 110 of the vehicle seat 100, for example, on the frame or sheet metal of the seat back 110. The guide device bracket 1 can be fixed to the seat back 110, for example, by form locking, force locking and / or material locking. For example, the guide device bracket 1 can be welded to the seat back 110, screwed, etc. Figure 1 and Figure 2 In the illustrated embodiment, the guide device support 1 can be connected to the seat back 110 via the connecting lug 11. For example, it is also conceivable that the guide device support 1 is formed in one piece with the frame of the seat back 110.

[0048] The airbag 20 can be accommodated in the guide bracket 1 in a compressed or folded state and fixed to the seat back 110 via the guide bracket 1. The guide bracket 1 can have an elongated extension that at least partially follows the upper edge and the side edge of the seat back 110 of the vehicle seat 100. The elongated extension shape of the guide bracket 1 can be related to, for example, the shape of the seat back 110 of the vehicle seat 100, the configuration of the airbag 20, and the desired installation position of the airbag 20 on the seat back 110. In some embodiments, as Figure 6 , Fig. 9 and Fig.10 As can be seen most clearly, the guide bracket 1 may have a receiving groove 12 for the airbag 20. The receiving groove 12 may have a cross-sectional shape such as a C-shape, a U-shape or a V-shape to provide a receiving space for the airbag 20. The receiving groove 12 may have an opening that substantially corresponds to the elongated extension shape of the guide bracket 1. The airbag assembly consisting of the airbag 20 and the guide 10 may be covered by a seat cover fabric.

[0049] The airbag 20 may be equipped with a gas generator (not shown). For example, when the vehicle collides, such as a frontal or side collision, the gas generator may be triggered according to an ignition strategy and command, and the compressed or folded airbag 20 may be inflated and expanded by the gas generator. Here, the airbag 20 may, for example, break through the covering fabric of the vehicle seat 100 and be deployed forward from behind the occupant on the vehicle seat 100, so as to protect the corresponding occupant. Typically, the gas generator may be a pyrotechnic gas generator.

[0050] Reference Figures 1 to 3 , the guide device 10 of the airbag 20 may include at least one airbag guide mechanism 2, and the airbag guide mechanism 2 may be arranged on the guide device bracket 1. Specifically, in some embodiments, the airbag guide mechanism 2 may be arranged at the top or side of the guide device bracket 1. In the illustrated embodiment, the only airbag guide mechanism 2 may be arranged, for example, in the top area of ​​the guide device bracket 1, and the top area of ​​the guide device bracket 1 substantially corresponds to the upper edge of the seat back 110. In other embodiments not shown, the guide device 10 may include a plurality of airbag guide mechanisms 2 respectively arranged at different positions of the guide device bracket 1, for example, arranged in the top area and the side area of ​​the guide device bracket 1.

[0051] The airbag guide mechanism 2 can be in the stowed position ( Figure 1 ) and the open position ( Figure 2). When the airbag 20 is not deployed, the airbag guide mechanism 2 can be in the stowed position. The airbag guide mechanism 2 is configured to move from the stowed position to the unfolded position before and / or when the airbag 20 is deployed, and guide the airbag 20 during the inflation and deployment process of the airbag 20.

[0052] For example, in the design position of the vehicle seat 100 (the seat back 110 of the vehicle seat 100 is, for example, tilted backward at most by about 25 degrees), the height of the airbag guide mechanism 2 in the stowed position (for example, the height corresponding to the highest point of the airbag guide mechanism 2) can be particularly lower than the height of the airbag guide mechanism 2 in the opened position. As a result, when the airbag 20 is not deployed, the guide device 10 and the vehicle seat 100 equipped with the guide device 10 can have a lower height, which is beneficial to the overall aesthetics of the vehicle's interior design. In the case where the vehicle seat 100 is the front seat of the vehicle, the more limited seat back 110 height of the vehicle seat 100 is also beneficial to the riding experience of the rear passengers, because the field of vision of the rear occupants will be less affected by the height of the front seats. In the event of a vehicle collision, for example, see Figure 3 The airbag guide mechanism 2 can be transferred from the stowed position to the open position before and / or when the airbag 20 is deployed. The increased height of the airbag guide mechanism 2 in the open position relative to the stowed position is conducive to guiding the airbag 20 to smoothly pass over the head of the occupant 300. By following the technical solution of the present application, on the one hand, the aesthetic requirements for the interior shape of the vehicle can be met and the riding experience can be maintained when the vehicle is in normal operation, and on the other hand, the airbag installed on the vehicle seat can function correctly when the vehicle collides, thereby achieving a balance between the two aspects.

[0053] In some embodiments, Figures 4 to 6 As best shown, the airbag guide mechanism 2 may include a guide flap 21. The guide flap 21 may be disposed, for example, mounted on the guide bracket 1 via a pivot shaft 24 and may pivot between a stowed position and an open position. The pivot shaft 24 may penetrate corresponding pivot holes of the guide bracket 1 and the guide flap 21, and radial dimensions may be enlarged at both ends of the pivot shaft 24, for example, by riveting, to prevent the pivot shaft 24 from coming out of the guide bracket 1 and the guide flap 21. In some embodiments, as Figures 4 to 6 As shown, the airbag guide mechanism 2, for example, its guide flap 21 can be arranged in the area of ​​the front edge of the receiving groove 12 of the guide device bracket 1. In other embodiments, such as Fig.11 As shown, the airbag guide 2 , for example its guide flap 21 , can also be arranged in the region of the rear edge of the receiving groove 12 of the guide carrier 1 .

[0054] The airbag guide mechanism 2, for example, its guide flap 21, can have any geometric structure suitable for guiding or assisting the deployment of the airbag. The guide flap 21 can be, for example, constructed as a long plate or having a curved arc shape. In some embodiments, Figure 2 , Fig.10 and Fig.11 As can be seen most clearly, the airbag guide 2, for example its guide flap 21, can have a guide surface 23 for the airbag 20. In the open position of the airbag guide 2, the guide surface 23 can be at an angle of 15° to 60°, preferably 20° to 40°, for example 30°, to the main extension direction of the seat back 110.

[0055] Here, the main extension direction of the seat back 110 may substantially correspond to the adjustment angle of the seat back 110. Exemplarily, in the design position of the vehicle seat 100, that is, when the occupant is in a normal sitting position, the seat back 110 and its main extension direction may be, for example, tilted backward by about 25° relative to the vertical direction. When the occupant is in a working sitting position, the seat back 110 and its main extension direction may be, for example, tilted backward by about 45° relative to the vertical direction. When the occupant is in a leisure sitting position, the seat back 110 and its main extension direction may be, for example, tilted backward by 60° or even more relative to the vertical direction.

[0056] The guide surface 23 may be understood as the area where the airbag guide mechanism 2 contacts or acts on the deployed airbag 20. This area may be the area where the fabric of the airbag 20 contacts the airbag guide mechanism 2 last before leaving the airbag guide mechanism 2 in the deployment path of the airbag 20. Specifically, in some embodiments, such as Fig.10 As shown most clearly, the guide surface 23 of the guide flap 21 of the airbag guide mechanism 2 can be the area directly adjacent to the upper edge 22 thereof in the open position of the guide flap 21. The guide surface 23 can help the airbag 20 to form a certain launch angle so that the airbag 20 can be smoothly deployed and pass over the head of the occupant. The launch angle can correspond to the spatial angle of the guide surface 23 in the open position. It can be understood that, by following the configuration scheme of the present application, the airbag guide mechanism 2, for example, its guide flap 21 can be reliably guided to smoothly deploy the airbag 20 without being affected by the use position of the vehicle seat 100.

[0057] In addition, in some embodiments, the guide device bracket 1 itself, for example, its receiving groove 12, may also have a geometric structure suitable for guiding or assisting the deployment of the airbag. Fig.10As shown, the receiving groove 12 of the guide device bracket 1 can be configured with a front slope 15 with a suitable angle, which can also facilitate the deployment of the airbag 20 to a certain extent, for example in the area of ​​the guide device bracket 1 where the airbag guide mechanism 2 is not provided.

[0058] In some embodiments, Figure 7 As shown, in the open position of the airbag guide mechanism 2, the upper edge 22 of the airbag guide mechanism 2 or the guide flap 21 thereof may be at least flush with the top of the head 310 of 95% of the dummies 300 sitting on the vehicle seat 110, or may exceed the top of the head 310 of 95% of the dummies 300 sitting on the vehicle seat 110. Specifically, at least when the seat back 110 of the vehicle seat 100 is substantially upright or in the design position of the vehicle seat 100, in the open position of the airbag guide mechanism 2, the height H3 of the upper edge 22 of the airbag guide mechanism 2 in the vertical direction may be greater than or equal to the height H4 of the top of the head 310 of 95% of the dummies 300 sitting on the vehicle seat 110. This is beneficial to the protection of the vast majority of occupants, especially occupants with larger bodies or higher sitting heights (for example, whose bodies basically correspond to the 95th percentile dummy), because for such occupants, the risk of the airbag 20 being obstructed by the occupant during deployment or even causing injury to the occupant may be relatively high.

[0059] like Figure 8 As shown, in some embodiments, the vehicle seat 100 may include an integrated headrest 120 (schematically shown in dotted lines). When installed on the vehicle seat 100, the upper edge 13 of the guide bracket 1 may extend beyond the top of the headrest 120 of the vehicle seat 100. Specifically, at least when the seat back 110 of the vehicle seat 100 is substantially upright or in the design position of the vehicle seat 100, the height H1 of the upper edge 13 of the guide bracket 1 may be greater than or equal to the height H2 of the top of the headrest 120.

[0060] Continue to refer to Figure 8 Alternatively or additionally, when installed on the vehicle seat 100, the lateral width L1 of the guide bracket 1 may be greater than or equal to the lateral width L2 of the headrest 120 of the vehicle seat 100. The lateral width may be understood as the width of the guide bracket 1 and the headrest 120 in the lateral direction of the vehicle ( Figure 1 Thus, on the one hand, the riding comfort of the occupant can be ensured, and on the other hand, the headrest 120 can be well prevented from hindering the deployment of the airbag 20.

[0061] The movement of the airbag guide mechanism 2 from the stowed position to the deployed position can be achieved in a variety of ways, such as actively or passively. Figure 1 As can be seen most clearly, the airbag guide 2, for example its guide flap 21, can be moved in the stowed position in the front-to-back direction ( Figure 1 The guide flap 21 may at least partially cover the opening of the receiving groove 12 in the X direction, which basically corresponds to the longitudinal direction of the vehicle. Here, the guide flap 21 may bridge the front edge and the rear edge of the receiving groove 12, or may, for example, extend only a certain distance from the front edge area of ​​the receiving groove 12 toward the rear edge of the receiving groove 12. The pivot axis 24 may be substantially along the transverse direction of the vehicle ( Figure 1 With such an arrangement, the guide flap 21 can be at least partially arranged in the deployment path of the airbag 20. During the expansion and deployment of the airbag 20, the airbag 20 can apply a thrust to the guide flap 21, so that the guide flap 21 moves from the stowed position ( Figure 1 ) passively transferred to the open position ( Figure 2 ).

[0062] In other embodiments, the movement of the airbag guide mechanism 2 from the stowed position to the deployed position can be actively realized, for example, by a corresponding actuating device. For this purpose, for example, a corresponding actuating device, such as a motor, a spring, etc., can be activated substantially simultaneously with or before the gas generator that triggers the airbag 20.

[0063] In some embodiments, the device may be provided by holding the device, for example, Figures 4 to 6 The preload spring 25, which can be seen most clearly, holds the guide flap 21 in the stowed position when the airbag 20 is not deployed. The preload spring 25 can be configured as a torsion spring and assembled on the guide device bracket 1 via the pivot shaft 24. The preload spring 25 can be configured to preload the guide flap 21 toward the stowed position and hold it in the stowed position, thereby facilitating the installation of the guide device 10 as a whole and advantageously preventing the loose guide flap 21 from interfering with the daily use of the vehicle seat 100. During the expansion and deployment of the airbag 20, the airbag 20 can, for example, overcome the elastic force of the preload spring 25 to push the guide flap 21 toward the open position.

[0064] In other embodiments, other forms of retention devices can also be envisioned, such as snap-on, magnetic, or breaking-piece retention devices, which can actively or passively release the retention effect on the airbag guide mechanism 2, such as its guide flap 21, when the airbag 20 is deployed, to allow the airbag guide mechanism 2 to move from the stowed position to the unfolded position.

[0065] In some embodiments, the guide device 10 may include a limiting structure, and the limiting structure is used to limit the opening position of the guide flap 21. Figure 4 , Fig. 9 and Fig.10 The limiting structure may include a first limiting surface 14 provided on the guide device bracket 1 and a second limiting surface 26 provided on the guide flap 21. The pivot limit of the guide flap 21 and thus the open position of the guide flap 21 may be defined by the contact between the first limiting surface 14 and the second limiting surface 26. The first limiting surface 14 may be configured on a boss of the guide device bracket 1 and a shaft hole for the pivot shaft 24, while the second limiting surface 26 may be configured in a region of the guide flap 21 corresponding to the boss of the guide device bracket 1.

[0066] In some embodiments, the guide bracket 1 of the guide device 10 and the guide flap 21 of the airbag guide mechanism 2 can be constructed as a metal part or a non-metal part. The material of the guide bracket 1 and the guide flap 21 can, for example, have sufficient hardness to withstand the impact of the airbag 20 during the expansion and deployment process. In some embodiments, the frame of the seat back 110 is advantageously made of a hard material.

[0067] Not limited to the airbag guide mechanism 2 shown including the guide flap 21, it is also conceivable that in some embodiments the airbag guide mechanism 2 may include a retractable guide member, which may be stored in the guide device bracket 1 in a retracted position, for example, and actively or passively transferred from the retracted position to an open position extending from the guide device bracket 1 before and / or when the airbag is deployed.

[0068] In some embodiments, the airbag 20 accommodated in the guide device holder 1 of the guide device 10 can include at least one Z-fold, preferably at least one pair of symmetrical Z-folds, in particular at least in the region corresponding to the airbag guide 2 . Fig.12 Schematically showing a top view of an airbag 20 having a pair of Z-shaped folds 210 that are substantially symmetrical to each other ( Fig.12 The upper part of the figure) and the side view along the direction of arrow A ( Fig.12Here, the area of ​​the airbag 20 where the Z-shaped fold 210 exists can basically correspond to the area of ​​the airbag 20 that basically corresponds to the airbag guide mechanism 2 along the elongated extension direction of the guide device bracket 1 when the airbag 20 is accommodated in the guide device bracket 1. The Z-shaped fold 210 can be formed by taking a portion of the fabric in the area of ​​the airbag 20 as the center, and drawing and folding a portion of the fabric on both sides of the fabric in the area under the fabric in the area. The fold line can basically extend along the front-to-back direction (the X direction of the vehicle). When the airbag 20 is installed in the guide device bracket 1, it can be formed from Fig.12 Starting from the state shown, the airbag 20 is folded and stored in the guide bracket 1. By providing the Z-shaped fold 210 in particular in the area corresponding to the airbag guide mechanism 2, when the airbag 20 is inflated and deployed, the area located below the Z-shaped fold 210 can be inflated and expand and press the area above to "jump" upward, so that the airbag 20 smoothly pushes the airbag guide mechanism 2, passes over the airbag guide mechanism 2 and deploys. In addition, providing the Z-shaped fold 210 in other areas of the airbag 20 can also facilitate the airbag to jump up and deploy around the occupant.

[0069] The above describes exemplary embodiments according to the present application with reference to the accompanying drawings. However, it should be understood by those skilled in the art that various changes and modifications can be made to the exemplary embodiments of the present application without departing from the spirit and scope of the present disclosure. All changes and modifications are included in the scope of protection of the present application as defined by the claims. The present application is defined by the appended claims, and the equivalents of these claims are also included.

Claims

1. A guide device for an airbag, the airbag (20) being used to protect an occupant located on a vehicle seat (100), characterized in that: The guiding device (10) comprises: a guide bracket (1), the guide bracket being configured to accommodate the airbag and being configured to be mounted on a seat back (110) of a vehicle seat; and An airbag guide mechanism (2) is arranged on a guide device bracket and can move between a stowed position and an unfolded position. When the airbag is not unfolded, the airbag guide mechanism is in the stowed position. The airbag guide mechanism is configured to transfer from the stowed position to the unfolded position before and / or when the airbag is unfolded, and to guide the airbag during the expansion and unfolding process of the airbag.

2. The guide device for an airbag according to claim 1, characterized in that: The airbag guide mechanism has a guide surface (23) for the airbag, and in the open position of the airbag guide mechanism, the guide surface forms an angle of 20° to 40° with the main extension direction of the seat back.

3. The guide device for an airbag according to claim 1, characterized in that: In the open position of the airbag guide, an upper edge (22) of the airbag guide extends beyond the top of the head of 95% of the dummies seated on the vehicle seat or is flush with the top of the head of 95% of the dummies seated on the vehicle seat.

4. The guide device for an airbag according to any one of claims 1 to 3, characterized in that: The safety airbag guide mechanism comprises a guide flap (21), which is arranged on a guide device bracket and can pivot between a stowed position and an open position.

5. The guide device for an airbag according to claim 4, characterized in that: The airbag guide comprises retaining means which are designed to hold the guide flap in a retracted position in a non-deployed state of the airbag.

6. The guide device for an airbag according to claim 5, characterized in that: The retaining device is configured as a preload spring (25) which is configured to preload the guide flap toward a retracted position.

7. The guide device for an air bag according to claim 4, characterized in that: The guiding device comprises a limiting structure, and the limiting structure is used to limit the opening position of the guiding flip cover.

8. The guide device for an air bag according to claim 7, characterized in that: The limiting structure comprises a first limiting surface (14) arranged on the guide device bracket and a second limiting surface (26) arranged on the guide flap, and the opening position of the guide flap is limited by the abutment between the first limiting surface and the second limiting surface.

9. The guide device for an air bag according to claim 4, characterized in that: The guide device bracket has a receiving groove (12) for the safety airbag, and the guide flap at least partially covers the opening of the receiving groove in the front-rear direction in the retracted position.

10. The guide device for an air bag according to claim 9, characterized in that: The airbag guide is arranged in the region of a front edge or in the region of a rear edge of the receiving groove.

11. The guide device for an airbag according to claim 9 or 10, characterized in that: The receiving groove has a C-shaped, U-shaped or V-shaped cross section.

12. The guide device for an airbag according to any one of claims 1 to 3, characterized in that: The guide device bracket has an elongated extension which at least partially follows the upper edge and the side edges of the seat back of the vehicle seat.

13. The guide device for an air bag according to claim 12, characterized in that: When installed on a vehicle seat, the upper edge of the guide device bracket is not lower than the topmost portion of a headrest (120) of the vehicle seat, and / or the lateral width of the guide device bracket is greater than or equal to the lateral width of the headrest of the vehicle seat.

14. The guide device for an air bag according to claim 12, characterized in that: The airbag guide mechanism is arranged on the top or side of the guide device bracket.

15. The guide device for an airbag according to any one of claims 1 to 3, characterized in that: The guide device comprises a plurality of safety airbag guide mechanisms which are respectively arranged at different positions of a guide device bracket.

16. An airbag assembly, characterized in that: The airbag module comprises an airbag and a guide device for the airbag according to any one of claims 1 to 15 .

17. The airbag module according to claim 16, characterized in that: The folded airbag is accommodated in a guide device bracket of the guide device, and the folded airbag includes at least one Z-shaped fold (210).

18. The airbag module according to claim 17, characterized in that: The airbag comprises at least one pair of symmetrical Z-folds in a region corresponding to the airbag guide.

19. A vehicle seat, characterized in that: The vehicle seat comprises a guide device for an airbag according to any one of claims 1 to 15 or comprises an airbag module according to any one of claims 16 to 18.

20. A vehicle, characterized in that: The vehicle includes a vehicle seat according to claim 19.

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