Safety air bag device, vehicle seat and vehicle

Abstract

The present application relates to an airbag device which can be mounted on a seat back of a vehicle seat, the airbag device comprising: an airbag configured to protect an occupant located on the vehicle seat; the invention relates to an airbag for a motor vehicle, in particular for a motor vehicle, comprising at least one sub-section of the airbag, and a lifting mechanism, which is arranged at least partially below the sub-section of the airbag and which is designed to move from a stowed position into a lifted position before and / or during deployment of the airbag and to lift at least the sub-section of the airbag during this process, the airbag is configured such that during the inflation and deployment of the airbag, at least the partial section of the airbag can pass over the head of the occupant from above. The invention further relates to 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 an airbag device, 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, an airbag protection device is proposed to be arranged on a vehicle seat, so as to effectively protect the drivers and passengers when the vehicle collides when the drivers and passengers are in working sitting positions (e.g., half-lying, upright) and leisure sitting positions (e.g., fully lying), thereby reducing the damage to the drivers and passengers. Such an airbag protection device can be arranged on the seat back of the vehicle seat and deployed in the event of a collision, especially starting from the seat back and moving forward over the head of the passenger to protect the drivers and passengers on the vehicle seat. Such an airbag protection device is known, for example, from the applicant's own CN117284214A, CN117841894A and CN117622040A.

[0004] However, there may be problems when equipping an existing vehicle seat device with such an airbag protection device. On the one hand, the structure of the existing vehicle seat may not be well adapted to such an airbag protection device; on the other hand, when arranging such an airbag protection device on a 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. Summary of the invention

[0006] The purpose of the present application is to provide an airbag device, a vehicle seat and a vehicle, which can overcome at least one defect in the prior art, thereby enabling the smooth deployment of the airbag while meeting the overall shape and size requirements of the vehicle seat as much as possible.

[0007] According to a first aspect of the present application, an airbag device is provided, which can be installed on a seat back of a vehicle seat. The airbag device includes: an airbag, which is configured to protect an occupant on the vehicle seat; and a lifting mechanism, which is at least partially arranged below a partial section of the airbag, and is configured to move from a stowed position to a raised position before and / or when the airbag is deployed, and to lift at least the partial section of the airbag in the process, so that during the expansion and deployment of the airbag, at least the partial section of the airbag can pass over the head of the occupant from above.

[0008] According to one embodiment of the present application, the lifting mechanism includes a lifter and a lifting member, wherein the lifter is configured to cause the lifting member to move from a stowed position to a raised position, and the lifting member is configured to act on the partial section of the airbag and lift the airbag during the movement from the stowed position to the raised position.

[0009] According to one embodiment of the application, the lifting element has an effective surface for the partial section of the airbag, wherein in the raised position the free edge of the effective surface does not lie below an upper edge of a seat back of the vehicle seat.

[0010] According to an embodiment of the present application, the free edge of the active surface is not lower than the top of the heads of 95% of the dummies sitting on the vehicle seat.

[0011] According to one embodiment of the present application, the lifting member has a guide surface for the partial section of the airbag, and the guide surface forms a launch angle for the partial section of the airbag, and the launch angle is at an angle of 20° to 45°, preferably 25° to 40°, to the main extension direction of the seat back.

[0012] According to one embodiment of the present application, the lifter can be fixed to a vehicle seat, in particular a seat backrest.

[0013] According to one embodiment of the present application, the lifter can be operated pneumatically, hydraulically, mechanically or electromagnetically.

[0014] According to one embodiment of the present application, the lifter includes an outer shell tube, a piston rod cooperating with the outer shell tube, and a gas generator, the piston rod having a piston end located inside the outer shell tube and a free end opposite to the piston end, the free end being fixedly connected to the lifting member, and the gas from the gas generator can fill the gas chamber between the piston end of the piston rod and the outer shell tube to prompt the piston rod to move along the outer shell tube and realize the movement of the lifting member from a stowed position to a lifted position.

[0015] According to one embodiment of the present application, the free end of the piston rod and the lifting element are connected to each other in a form-fitting, force-fitting and / or materially bonding manner.

[0016] According to an embodiment of the present application, the lifting mechanism includes a connecting bracket, and the free end of the piston rod is fixedly connected to the lifting member through the connecting bracket.

[0017] According to an embodiment of the present application, the connecting bracket is respectively welded, bonded and / or threadedly connected to the free end of the piston rod and the lifting member.

[0018] According to one embodiment of the application, the housing tube can be connected to the vehicle seat, in particular to a seat backrest, in a form-fitting, force-fitting and / or materially bonding manner.

[0019] According to one embodiment of the present application, the lifting mechanism comprises a support plate, wherein the lifting mechanism comprises a support plate, and the support plate is configured to fix the shell tube to a frame of the vehicle seat.

[0020] According to an embodiment of the present application, the support plate is respectively welded, bonded and / or threadedly connected to the shell tube and the frame of the vehicle seat.

[0021] According to one embodiment of the present application, the piston rod includes a channel extending from the piston end along the longitudinal direction of the piston rod, one end of the channel is closed and the other end is open, and the channel is configured to adjust the pressure curve of the gas from the gas generator acting on the piston rod. In some embodiments, the channel can be configured as a blind hole, for example.

[0022] According to one specific embodiment of the present application, the airbag device includes an airbag guide assembly, which is configured to at least partially accommodate the airbag.

[0023] According to one embodiment of the present application, the airbag guide assembly has a receiving groove for the airbag, and the receiving groove has a curved and / or bent cross section, such as a C-shaped, U-shaped or V-shaped cross section. The C-shaped cross section may, for example, include an arc-shaped or "◡"-shaped cross section.

[0024] According to an embodiment of the present application, the lifting member constitutes the airbag guide assembly.

[0025] According to one embodiment of the present application, the lifting member constitutes a part of the airbag guide assembly, and the airbag guide assembly also includes a guide member separated from the lifting member, the guide member is configured to be installed on a seat back of a vehicle seat and accommodate a part of the airbag.

[0026] According to one embodiment of the application, the guide element has an elongated extension that at least partially follows a side edge of a seat back of the vehicle seat.

[0027] According to an embodiment of the present application, the airbag guide assembly includes two guide members, and the two guide members are respectively arranged on both sides of the lifting member.

[0028] According to an embodiment of the present application, the lifter is fixedly connected to the guide member and can be held on the seat back of the vehicle seat via the guide member.

[0029] According to a second aspect of the present application, a vehicle seat is provided, wherein the vehicle seat includes the airbag device according to the first aspect of the present application.

[0030] According to an embodiment of the present application, the airbag device is disposed between a frame of a seat back and foaming of the seat back.

[0031] According to a third aspect of the present application, a vehicle is provided, wherein the vehicle comprises the vehicle seat according to the second aspect of the present application.

[0032] 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

[0033] After reading the following detailed description in conjunction with the accompanying drawings, various aspects of the present application will be better understood, in which:

[0034] Figure 1 and Figure 2 Schematically illustrating an airbag device according to some embodiments of the present application, wherein the airbag is not shown;

[0035] Figure 3 Schematically showing the working diagram of the airbag device according to some embodiments of the present application;

[0036] Figure 4 Schematically showing an assembly diagram of a lifting mechanism of an airbag device according to some embodiments of the present application;

[0037] Figure 5 Schematically showing an exploded view of a lifter of an airbag device according to some embodiments of the present application;

[0038] Figure 6 Schematically shows Figure 5 A cross-sectional view of a jacking device, wherein the piston rod is not pushed out;

[0039] Figure 7 Schematically shows Figure 5 A cross-sectional view of a jacking device in which the piston rod is pushed out to the limit position. DETAILED DESCRIPTION

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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 oriented in other ways (rotated 90 degrees or in other orientations), and the relative spatial relationships will be interpreted accordingly.

[0045] Figure 1 and Figure 2 The airbag device 2 according to some embodiments of the present application is schematically shown and can be installed on a vehicle seat 1, in particular a seat back 11. Figure 1 and Figure 2 For the sake of clarity, only a part of the seat back 11 is shown, wherein in particular the headrest 12 and a part of the frame 13 of the seat back 11 can be seen. The airbag device 2 can, for example, be arranged between the frame 13 of the seat back 11 and the foam of the seat back 11 and can be covered by the seat covering fabric.

[0046] The airbag device 2 includes an airbag 21 (see Figure 3 ), the airbag 21 is configured to protect the occupant 3 located on the vehicle seat 1. Such an airbag 21 can be arranged on the seat back 11 of the vehicle seat 1 and is generally in a compressed or folded state. For example, in the event of a collision, the airbag 21 can be expanded and deployed forward from the seat back 11 to protect the occupant 3. For example, reference can be made to Figure 3 The airbag 21 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 21 may be inflated and expanded by the gas generator. Here, the airbag 21 may, for example, break through the covering fabric of the vehicle seat 1 and be deployed forward from behind the occupant 3 located on the vehicle seat 1, so as to protect the corresponding occupant 3. Typically, the gas generator may be a pyrotechnic gas generator.

[0047] In the scope of the present application, the term "occupant" may include the driver as well as other occupants other than the driver. In the scope of the present application, a vehicle seat may be a seat for a driver in a vehicle and / or a seat for other occupants other than the driver.

[0048] Reference Figure 1 and Figure 2 and Figure 4 The airbag device 2 further includes a lifting mechanism 22, which is at least partially disposed in a partial section 211 of the airbag 21 (see Figure 3 ) below. Figure 3 The middle figure in the figure schematically encloses the possible area of ​​the partial section 211 of the airbag 21 with a dotted line. During the deployment of the airbag 21, the partial section 211 of the airbag 21 needs to pass over the top of the head 31 of the occupant 3 on the vehicle seat 1. For example, this partial section 211 of the airbag 21 can be the airbag portion 212 located above the top of the head 21 of the occupant 3 after deployment (see Figure 3). Such a partial section 211 may also be, for example, part of a so-called "thorax airbag", which after deployment may be, for example, located in front of the occupant 3. It is understood that in order to ensure that the airbag 21 functions reliably, it is particularly important to ensure smooth deployment of the airbag 21, especially smooth deployment of the above-mentioned partial section 211 of the airbag 21.

[0049] For this purpose, in the present application, the lifting mechanism 22 is configured to lift the airbag 21 from the stowed position ( Figure 1 ) moves to the raised position ( Figure 2 ) and in the process at least lift the partial section 211 of the airbag 21 so that during the inflation and deployment of the airbag 21 , at least the partial section 211 of the airbag 21 can pass over the top of the head 31 of the occupant 3 from above.

[0050] The lifting movement of the lifting mechanism 22 from the stowed position to the lifted position may be performed simultaneously with the deployment process of the airbag 21 or in advance of the deployment process of the airbag 21. Specifically, the lifting movement may be started, for example, at the same time as the gas generator for the airbag 21 is triggered, or may be started, for example, before the gas generator for the airbag 21 is triggered. The lifting movement may be completed when the airbag 21 has deployed but not fully deployed. At this time, the lifting mechanism 22 may have moved to the lifted position, while the airbag 21 has not yet deployed to the top 31 of the head of the occupant 3. In this way, the lifting mechanism 22 can assist in the smooth deployment of the airbag 21, especially the smooth deployment of the above-mentioned partial section 211 of the airbag 21.

[0051] For example, in the design position of the vehicle seat 1 (wherein the seat back 11 of the vehicle seat 1 is tilted backward by, for example, at most about 25 degrees), the height of the lifting mechanism 22 as a whole in the stowed position (e.g., the height corresponding to the highest point of the lifting mechanism 22) can be lower than the height of the lifting mechanism 22 in the raised position. Figure 1 As shown in FIG. 1 , in the stowed position, the lifting mechanism 22 as a whole may not exceed the upper edge of the seat back 11 at least in the vertical direction. For example, for a vehicle seat 1 with an integrated headrest, the upper edge of the seat back 11 may be understood as the highest outer edge of the seat back 11 itself. For example, for a vehicle seat 1 with a height-adjustable split headrest 12, the upper edge of the seat back 11 may be understood as the upper edge 121 of the split headrest 12. For this, see FIG. Figure 1 and Figure 2. In particular, it is advantageous for a vehicle seat 1 having a split headrest 12 that, in the stowed position, the lifting mechanism 22 as a whole is lower than the upper edge of the split headrest 12 at the lowest adjustment height. Thus, even if an airbag device 2 is installed, the exterior design of the vehicle seat 1, and in particular the seat back 11, may be less affected by the airbag device 2, and may take more consideration into the aesthetics and comfort of the vehicle seat 1 itself. In particular, since there is no need to rely on the seat back 11 to provide the airbag 21 with the required height for smooth deployment, the seat back 11 itself may have a lower height and a more refined appearance, which is beneficial to the overall aesthetics of the vehicle's interior styling. In the case where the vehicle seat 1 is the front seat of the vehicle, the lower seat back 11 height of the vehicle seat 1 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 lifting mechanism 22 can move from the stowed position (left figure) to the raised position (middle figure) before and / or when the airbag 21 is deployed. The increased height of the lifting mechanism 22 in the raised position relative to the stowed position helps the airbag 21 to smoothly pass over the head 31 of the occupant 3.

[0052] 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 operating normally; on the other hand, the airbags installed on the vehicle seats can function correctly when the vehicle collides, thereby achieving a balance between the two aspects.

[0053] Figure 4 The assembly diagram of the lifting mechanism 22 of the airbag device 2 according to some embodiments of the present application is schematically shown. The lifting mechanism 22 may include a lifter 23 and a lifting member 24. The lifter 23 may be configured to cause the lifting member 24 to move from the stowed position to the raised position. The lifter 23 may be, for example, directly or indirectly fixed to the vehicle seat 1, in particular the seat back 11. This will be described in more detail later. The lifting member 24 may be configured to act on the partial section 211 of the airbag 21 and at least lift the partial section 211 during the movement from the stowed position to the raised position. Here, "at least lifting the partial section 211" may be understood as, due to the action on the partial section 211 and lifting it, for example, the area of ​​the airbag 21 connected to the partial section 211 (if any), or even the entire airbag 21 may be correspondingly pulled and lifted to a certain extent. The lifter 23 may be any mechanism capable of achieving the above lifting motion, and it may be operated, for example, pneumatically, hydraulically, mechanically and / or electromagnetically. The above lifting motion is preferably a linear motion.

[0054] Combine the following Figures 5 to 7An embodiment of a lifter 23 is described. The lifter 23 can be constructed based on a piston actuator. The lifter 23 can include a housing tube 231 and a piston rod 232 that cooperates with the housing tube 231. The piston rod 232 has a piston end 320 located inside the housing tube 231 and a free end 321 opposite to the piston end 320. The free end 321 can be fixedly connected to the lifting member 24, for example, in a form-locked, force-locked and / or material-locked manner. The piston rod 232 can move along the housing tube 231 and realize the lifting movement of the lifting member 24.

[0055] In some embodiments, Figure 4 As shown, the lifting mechanism 22 may include a connecting bracket 25, a free end 321 of a piston rod 232 (at Figure 4 The connecting bracket 25 can be fixedly connected to the lifting member 24 via the connecting bracket 25. The connecting bracket 25 can be respectively connected to the free end 321 of the piston rod 232 and the lifting member 24, for example, by welding, bonding and / or threading. In the illustrated embodiment, the connecting bracket 25 can include a first connecting surface 251 for connecting to the free end 321 of the piston rod 232, and the first connecting surface 251 can have a first connecting hole 252. The first fixing bolt 26 can pass through the first connecting hole 252 and the free end 321 of the piston rod 232 and fix the connecting bracket 25 and the piston rod 232 to each other. In addition, the connecting bracket 25 can have a second connecting surface 253 raised relative to the first connecting surface 251 on both sides of the first connecting surface 251, and each second connecting surface 253 can be connected to the first connecting surface 251 by means of a corresponding tab, thereby producing a saddle-shaped connecting bracket 25. Each second connection surface 253 may have a second connection hole 254 , and the second fixing bolt 27 may pass through the second connection hole 254 and the lifting member 24 to fix the two to each other.

[0056] In exemplary embodiments, the lifter 23 may be connected to the vehicle seat 1 , in particular the seat back 11 , in a form-fitting, force-fitting and / or materially bonding manner.

[0057] In such Figure 4 In the illustrated embodiment, the lifting mechanism 22 may include a support plate 28, which may be configured to fix the housing tube 231 of the lifter 23 to the frame 14 of the vehicle seat 1, in particular the seat back 11. Figure 4 Only a portion of the frame 14 of the seat back 11 is schematically shown in FIG. Figure 1 and Figure 2The support plate 28 can be welded, bonded and / or screwed to the housing tube 231 and the frame 14 of the seat back 11, for example. In the illustrated embodiment, the support plate 28 can be constructed to be substantially U-shaped, and a connecting hole 282 can be provided on the bottom surface 281 of the support plate 28, and the third fixing bolt 29 can pass through the connecting hole 282 to fix the support plate 28 to the frame 14 of the seat back 11. In addition, the support plate 28 can have two substantially parallel legs 283 extending from the bottom surface 281, and the legs 283 can respectively have through holes for the housing tube 231 to pass through, so that the housing tube 231 can be held by means of the legs 283. For this purpose, the housing tube 231 can be bonded or welded to the legs 283, for example.

[0058] In the state of being mounted on the seat back 11, the housing tube 231 is preferably arranged substantially parallel to the main extension direction of the seat back 11 (see Figure 1 and Figure 2 ), thereby enabling a compact lifting movement path that particularly meets the requirements. The main extension direction of the seat back 11 may substantially correspond to the adjustment angle of the seat back 11. Exemplarily, in the design position of the vehicle seat 1, that is, when the occupant is in a normal sitting position, the seat back 11 and its main extension direction may, for example, be tilted backwards by about 25° relative to the vertical direction. When the occupant is in a working sitting position, the seat back 11 and its main extension direction may, for example, be tilted backwards by about 45° relative to the vertical direction. And when the occupant is in a leisure sitting position, the seat back 11 and its main extension direction may, for example, be tilted backwards by an angle of 60° or even greater relative to the vertical direction.

[0059] Continue to refer to Figures 5 to 7 In order to push the piston rod 232, the lifter 23 may include a gas generator 233. Figure 5 Also visible in the figure is the wiring harness 237 for the gas generator 233. The gas from the gas generator 233 can fill the gas chamber 322 (see FIG. Figure 7 ), so as to cause the piston rod 232 to move along the housing tube 231. The gas generator 233 as a power source can quickly push the piston rod 232 and make the lifting member 24 move quickly to the lifting position. This is particularly in line with the requirement of a very short time window for the deployment of the airbag when a vehicle collides.

[0060] In some embodiments, the wiring harness 237 of the gas generator 233 can be connected to the control unit of the vehicle, for example, together with the gas generator for the airbag 21. The triggering command of the gas generator for the airbag 21 can also be used for the gas generator 233, so that the gas generator 233 can be triggered at the same time as the gas generator for the airbag 21. The lifting movement achieved by means of the gas generator 233 can be completed in just a few milliseconds, and the airbag 21 may not have been deployed to the top 31 of the occupant 3 at this time. In other embodiments, the gas generator 233 can also be triggered before the gas generator for the airbag 21. If the response and action speed of the lifter 23 is fast enough, it may also be feasible to trigger the gas generator 233 after the gas generator for the airbag 21.

[0061] In addition, if Figures 5 to 7 As shown, in order to ensure the airtightness of the gas chamber 322 , the lifter 23 may include a first sealing ring 234 disposed between the piston rod 232 and the shell tube 231 and a second sealing ring 235 disposed between the gas generator 233 and the shell tube 231 .

[0062] like Figures 5 to 7 As shown, the lifter 23 may further include a guide sleeve 238 installed at one end of the shell tube 231 opposite to the gas generator 233, and the guide sleeve 238 may have an annular shape and an inner diameter thereof is smaller than the inner diameter of the shell tube 231. Figure 7 As shown, the end side 240 of the guide sleeve 238 facing the gas generator 233 can serve as a stopper for the piston rod 232 to limit the movement limit position of the piston rod 232 and limit the stroke of the lifting movement. Specifically, the piston rod 232 can have a piston body 323 that defines the piston end 320 and a rod portion 324 connected to the piston body 323. The maximum outer diameter of the piston body 323 can basically correspond to the inner diameter of the outer shell tube 231, and the outer diameter of the rod portion 324 can be smaller than the piston body 323 and can basically correspond to the inner ring size of the guide sleeve 238. As a result, the rod portion 324 can pass through the guide sleeve 238, while the piston body 32 will be blocked by the guide sleeve 238. Figure 7 As can be most clearly seen in the enlarged view in FIG. 2 , when the piston 232 moves upward in the figure, the transition portion between the piston body 323 and the rod portion 324 can interact with the end side 240 of the guide sleeve 238 and prevent the piston rod 232 from moving further. Figure 6 As shown, when the piston rod 232 is not in motion, its piston end 320 abuts against the gas generator 233, and the movement stroke L1 of the piston rod 232 can be, for example, Figure 7 The movement stroke L1 of the piston rod 232 may correspond to the stowed position ( Figure 1 ) and the raised position ( Figure 2 ) between them.

[0063] In addition, if Figures 5 to 7 As shown, the lifter 23 may further include a fastener 239, which may be externally mounted on the guide sleeve 238 and the end side of the housing tube 231. When not in operation, the piston rod 232 may be entirely located within the housing tube 231, and the end side of the housing tube 231 may be sealed by means of the fastener 239 to prevent foreign matter from entering. When the gas generator 233 is triggered, the piston rod 232, in particular the rod portion 324 thereof, may break through the fastener 239 and move out of the housing tube 231.

[0064] Continue to refer to Figure 6 and Figure 7 The piston rod 232 may have a channel 326 extending in the longitudinal direction of the piston rod 232 starting from its piston end 320, with one end of the channel 326 being closed and the other end being open. The channel may have a suitable geometric shape so as to specifically adjust the pressure curve of the gas from the gas generator 233 acting on the piston rod 232. The channel 326 may be configured, for example, as a blind hole, such as a stepped hole, etc.

[0065] Alternatively to the gas generator 233, other power sources, such as motors, hydraulic cylinders, etc., can naturally be conceived, as long as they can meet the demand of quickly reaching the lifting position of the lifting member 24. In addition, any other configuration of the jacking device 23 can also be conceived, as long as it can achieve the desired lifting movement.

[0066] The lifting member 24 can be any component suitable for exerting an effect on the airbag 21, in particular the partial section 211. In some embodiments, the lifting member 24 can be present, for example, as a profile member, a sheet metal member, or an injection molded member. The lifting member 24 can have a substantially C-shaped, U-shaped, or V-shaped cross section. However, in some cases, a lifting member 24 having a flat plate-like structure may also be feasible, as long as the lifting member 24 can appropriately exert a lifting force on the airbag 21 without damaging the airbag 21. Figure 1 , Figure 2 and Figure 4 In the embodiment shown, the lifting element 24 may have an action surface 241 for the partial section 211 of the airbag 21, and during the lifting process, the action surface 241 may exert a force on the partial section 211 of the airbag 21. Here, the action surface 241 may have a substantially U-shaped shape and thus include a substantially vertical first section 242, a relatively horizontal first section 243 connected to the first section 242, and an inclined third section 244 connected to the second section 243.

[0067] like Figure 2As shown, in the raised position, the free edge 245 of the active surface 241 (ie, its frontmost edge) may not be lower than the upper edge 121 of the vehicle seat 1. This advantageously ensures that the partial section 211 of the airbag 21 can pass over the upper edge 121 of the vehicle seat 1.

[0068] Alternatively or additionally, the free edge 245 of the action surface 241 may be no lower than the top of the head of 95% of dummies sitting on the vehicle seat 1. Specifically, at least when the seat back 11 of the vehicle seat 1 is substantially upright or in the design position of the vehicle seat 1, in the raised position of the lifting mechanism 22, the height of the free edge 245 of the action surface 241 in the vertical direction may be greater than or equal to the height of the top of the head of 95% of dummies sitting on the vehicle seat 1. This is conducive to the protection of the vast majority of occupants, especially the protection of occupants with larger bodies or higher sitting heights (for example, whose bodies substantially correspond to the 95% dummies), because for such occupants, the risk of the airbag 21 being blocked by the occupant during deployment or even causing injury to the occupant may be relatively high.

[0069] It is understood that the height of the lifting member 24, especially the free edge 245 thereof, in the lifting position may be related to the installation position of the lifting mechanism 22 on the vehicle seat 1, the lifting movement stroke of the lifting mechanism 22, the height of the seat back 11, especially the height of the upper edge 121 of the seat back 11, and the sitting height of the 95% dummy, etc. Therefore, the above parameters may be selected and matched in a targeted manner to achieve a desired lifting position.

[0070] In some embodiments, Figure 1 , Figure 2 and Figure 4 As shown, for example, the third section 244 of the lifting member 24 can form a guide surface for the partial section 211 of the airbag 21, and the guide surface can form a launch angle for the partial section 211 of the airbag 21. Advantageously, the launch angle can be at an angle of 20° to 45°, preferably 25° to 40°, with the main extension direction of the seat back 11. The guide surface can be understood as the area where the lifting member 24 contacts or acts on the deploying airbag 21. This area can be the area where the fabric of the airbag 21 last contacts the lifting member 24 before leaving the lifting member 24 in the deployment path of the airbag 21. This area is also the area in the Figure 1 , Figure 2 and Figure 4 , the third section 244 of the lifting member 24 adjacent to its free edge 245. The guide surface can help the airbag 21, especially the partial section 211 thereof, to form a certain launch angle so that it can be smoothly deployed and pass over the head of the occupant.

[0071] On this basis, it can be understood that in the raised position, the free edge 245 of the active surface 241 does not necessarily have to be higher than the upper edge 121 of the vehicle seat 1 or the top of the head of 95% of the dummies sitting on the vehicle seat 1. For example, in the case of a suitable launch angle, the airbag 21 can still be deployed without problems.

[0072] In some embodiments, Figure 1 and Figure 2 As shown, the airbag device 2 may include an airbag guide assembly 4, which may be configured to at least partially accommodate an airbag 21. The airbag guide assembly 4 may be used to retain the airbag 21 on the seat back 11.

[0073] exist Figure 1 and Figure 2 In the illustrated embodiment, the airbag guide assembly 4 may include a guide member 41, here two guide members 41, which may be mounted on the seat back 11. In order to accommodate the airbag 21, the guide member 41 may have a receiving groove 25 for the airbag 21. The receiving groove 25 may have, for example, a C-shaped, U-shaped or V-shaped cross section. Obviously, Figure 1 and Figure 2 The lifting member 24 shown in the figure with a substantially U-shaped cross section can also be present as part of the airbag guide assembly 4, and the curved shape of the lifting member 24 can also form a receiving groove 25 for the airbag 21. When the airbag 21 is arranged in each receiving groove 25, the airbag 21 can bridge the interruption area between the lifting member 24 and the corresponding guide member 41. In some cases, the airbag 21 can also have certain folds or wrinkles, for example in the interruption area and / or in the area of ​​the lifting member 24, so that the lifting member 24 can be lifted without problems. Advantageously, the guide member 41 can have a cross-sectional shape that is substantially the same as the lifting member 24 shown in the figure. Thus, similar to the lifting member 24, the guide member 41 can also have a guide surface 42, which can also form a certain launch angle, thereby facilitating the deployment of the airbag 21 from the back to the front to a certain extent.

[0074] Advantageously, the guide 41 may have an elongated extension that at least partially follows the side edge of the seat back 11. The elongated extension of the guide 41 may be related to the shape of the seat back 11, the configuration of the airbag 21, and the desired installation position of the airbag 21 on the seat back 11, for example.

[0075] In other embodiments, the airbag guide assembly 4 may include only a single-sided guide member 41. This may be applicable, for example, to an airbag 21 that only needs to be arranged in the upper edge region and one side edge region of the seat back 11. In still other embodiments, the airbag guide assembly 4 may even be composed of only the lifting member 24 without the guide member 41. This may be applicable, for example, to an airbag 21 that only needs to be arranged in the upper edge region of the vehicle seat 1.

[0076] As an alternative to the embodiment in which the lifting mechanism 22 is directly mounted on the seat back 11 , in the presence of a guide member 41 , the lifting mechanism 22 , in particular its lifter 23 , may also be fixedly connected to the guide member 41 and may be indirectly retained on the seat back 11 via the guide member 41 .

[0077] 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. An airbag device, which can be installed on a seat back of a vehicle seat, characterized in that: The airbag device comprises: an airbag configured to protect an occupant seated in a vehicle seat; and a lifting mechanism, the lifting mechanism being at least partially arranged below a partial section of the airbag, the lifting mechanism being configured to move from a stowed position to a raised position before and / or during deployment of the airbag and to lift at least the partial section of the airbag during the process, so that during the inflation and deployment of the airbag, at least the partial section of the airbag can pass over the head of the occupant from above; Preferably, the lifting mechanism includes a lifter and a lifting member, wherein the lifter is configured to cause the lifting member to move from a stowed position to a raised position, and the lifting member is configured to act on the partial section of the airbag and lift the airbag during the movement from the stowed position to the raised position.

2. The airbag device according to claim 1, characterized in that: The lifting member has an active surface for the partial section of the airbag, wherein in the raised position, the free edge of the active surface is not lower than the upper edge of the seat back of the vehicle seat and / or the free edge of the active surface is not lower than the top of the head of 95% of dummies sitting on the vehicle seat; and / or The lifting element has a guide surface for the partial section of the airbag, which forms a launch angle for the partial section of the airbag, which forms an angle of 20° to 45°, preferably 25° to 40° with the main extension direction of the seat back; and / or The lifter can be fixed to a vehicle seat, in particular a seat back, and / or the lifter can be actuated pneumatically, hydraulically, mechanically or electromagnetically.

3. The airbag device according to claim 1 or 2, characterized in that: The lifting device includes an outer shell tube, a piston rod cooperating with the outer shell tube, and a gas generator, the piston rod having a piston end located inside the outer shell tube and a free end opposite to the piston end, the free end being fixedly connected to the lifting member, and the gas from the gas generator can fill the gas chamber between the piston end of the piston rod and the outer shell tube to cause the piston rod to move along the outer shell tube and realize the movement of the lifting member from a stowed position to a lifted position. Preferably, the free end of the piston rod and the lifting member are connected to each other by form locking, force locking and / or material locking.

4. The airbag device according to any one of claims 1 to 3, characterized in that: The lifting mechanism comprises a connecting bracket, and the free end of the piston rod is fixedly connected to the lifting member through the connecting bracket. Preferably, the connecting bracket is respectively welded, bonded and / or threadedly connected to the free end of the piston rod and the lifting member; and / or The outer shell tube can be connected to the vehicle seat, in particular the seat back, by form-locking, force-locking and / or material-locking. Preferably, the lifting mechanism includes a support plate, which is configured to fix the outer shell tube on the frame of the vehicle seat. Preferably, the support plate is respectively welded, adhesively bonded and / or threadedly connected to the outer shell tube and the frame of the vehicle seat.

5. The airbag device according to any one of claims 1 to 4, characterized in that: The piston rod comprises a channel extending from the piston end along the longitudinal direction of the piston rod, one end of the channel is closed and the other end is open, and the channel is configured to adjust the pressure curve of the gas from the gas generator acting on the piston rod; and / or The airbag device includes an airbag guide assembly, which is configured to at least partially accommodate the airbag.

6. The airbag device according to any one of claims 1 to 5, characterized in that: The airbag guide assembly has a receiving groove for the airbag, which has a curved and / or angled cross section, for example a C-shaped, U-shaped or V-shaped cross section.

7. The airbag device according to any one of claims 1 to 6, characterized in that: The lifting member constitutes the airbag guide assembly; and / or The lifting member constitutes a part of the airbag guide assembly, and the airbag guide assembly also includes a guide member separate from the lifting member, and the guide member is configured to be installed on a seat back of a vehicle seat and accommodate a part of the airbag. Preferably: the guide member has an elongated extension direction that at least partially follows the side edge of the seat back of the vehicle seat, and / or the airbag guide assembly includes two guide members, which are respectively arranged on both sides of the lifting member.

8. The airbag device according to any one of claims 1 to 7, characterized in that: The lifter is fixedly connected to the guide element and can be held on the seat back of the vehicle seat via the guide element.

9. A vehicle seat, characterized in that: The vehicle seat comprises an airbag device according to any one of claims 1 to 8, preferably, the airbag device is arranged between a frame of a seat back and foaming of the seat back.

10. A vehicle, characterized in that: The vehicle comprises a vehicle seat according to claim 9.

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