CN116620211A - seat side airbag - Google Patents

Abstract

The application relates to a seat-side airbag comprising an airbag (100), which in the inflated state of the airbag comprises a first side part (101) on the occupant side, a second side part (102) on the vehicle body side opposite the first side part, and an intermediate part (103) connecting the first side part to the second side part, the airbag being configured such that, during inflation of the airbag, the first side part and the second side part support the intermediate part and the intermediate part lifts the arms of the occupant. The seat side airbag, when activated, can reliably raise the arms of an occupant seated in a vehicle seat provided with the seat side airbag, providing improved protection for the occupant.

Description

Seat side airbag

Technical Field

The present application relates to a vehicle safety technology, and more particularly, to a seat side airbag for a vehicle seat.

Background

In known vehicles, in particular passenger vehicles, airbags are widely used as components of passive safety systems. As one form of the airbag, a side airbag may be mainly mounted to a sheet metal member of a side frame of a seat back of a vehicle seat, for example, may be fixedly connected to the vehicle seat frame by a bolting means. The side airbag may also be referred to as a seat side airbag or a vehicle side airbag. In an emergency situation of the vehicle, particularly in a side collision of the vehicle, the seat side airbag may be activated and ejected from the vehicle seat, providing cushioning and protection for an occupant seated in the vehicle seat to mitigate or even completely avoid injury to the occupant from the vehicle accident.

In practice, a seat-side airbag is known, which has a flat structure when activated, in other words, which has a limited thickness in the inflated state and a significant area in a plane perpendicular to the thickness direction. Such a seat side airbag may be referred to as a 2D airbag.

In addition, a seat-side airbag, which may be referred to as a 3D airbag, is known in practice, the airbag of which has a plurality of chambers. The seat side airbag has a complex shape and structure and high manufacturing cost.

Disclosure of Invention

In research and development of products, the inventor of the present application found that, when a vehicle collides with a side surface, the collision object has a relatively small contact area with the vehicle body and the pressure of the collision object on the vehicle body is relatively large, so that the intrusion speed of the collision object into the vehicle body is relatively high and the intrusion amount is relatively large. The gap between the occupant and the vehicle body may quickly be filled with the deformed vehicle body portion and the interior trim, and these components then begin to squeeze the occupant's torso. If the occupant's arm is not raised in advance, the deformed body portion may press the chest rib together with the arm, which may cause the occupant to be injured, affecting the occupant's safety. Thus, especially after a side impact has occurred, the key points may include: the seat side airbag can effectively raise the arms of the occupant; the safety gap between the vehicle body and the occupant, that is, the seat side airbag is not broken down, is ensured.

The object of the present application is to provide a seat side airbag which can reliably raise the arms of an occupant upon activation, providing improved safety protection.

One aspect of the application relates to a seat side airbag that includes an airbag that is spherical in an inflated state of the airbag, the airbag including a first side portion on an occupant side, a second side portion on a vehicle body side opposite to the first side portion, and a middle portion connecting the first side portion and the second side portion.

Another aspect of the application relates to a seat side airbag that includes an airbag that includes a first side portion on an occupant side, a second side portion on a vehicle body side opposite to the first side portion, and an intermediate portion that connects the first side portion and the second side portion in an inflated state of the airbag, the airbag being configured such that the first side portion and the second side portion support the intermediate portion and the intermediate portion lifts an arm of the occupant during inflation of the airbag.

The seat-side airbag according to the application can have an increased width when activated compared to the known 2D airbags as seat-side airbags, can provide a larger contact area for the arms of the occupant and can provide a reliable support for this contact area during inflation of the airbag, so that this contact area is fully deployed, reliably lifts the arms of the occupant and thus can achieve better protection of the occupant.

In some embodiments, the air bag may include a first main panel configured to form the first side portion in the inflated state of the air bag and a second main panel configured to form the second side portion in the inflated state of the air bag, and an intermediate panel configured to form the intermediate portion in the inflated state of the air bag.

In some embodiments, the intermediate panel may be a separate sheet from the first and second main panels.

In some embodiments, the first and second main panels may be constructed as two portions of one unitary sheet.

In some embodiments, the first and second main panels may be two separate interconnected sheets.

In some embodiments, the intermediate panel may be formed from a single piece of material with the first main panel and/or the second main panel by suitable cutting.

In some embodiments, the airbag may be constructed from one or more sheets, each of which may provide part or all of any one or any plurality of the first side portion, the second side portion and the intermediate portion of the airbag, by suitable cutting.

In some embodiments, the first and second main panels may have substantially straight boundaries.

In some embodiments, the first and second main panels may each have an oval or circular profile in the flattened state, and the profile of the first and second main panels forms two opposing recesses between each other.

In some embodiments, the first main panel and the second main panel overlap in a flattened state, the contour of the first main panel being within the contour of the second main panel such that in the inflated state of the air bag, the second seam of the second main panel with the intermediate panel is higher than the first seam of the first main panel with the intermediate panel in the transverse direction of the air bag. Thus, upon activation of the seat side airbag, the intermediate portion of the airbag in the inflated state generally descends from the second seam toward the first seam, so that the arms of the occupant are more easily moved toward the trunk of the occupant than toward the vehicle body, which can be advantageous for side collision safety.

In some embodiments, the intermediate panel may extend elongated in a flattened state, the intermediate panel having a width that increases from both ends thereof toward the middle thereof, the intermediate panel forming a first seam with a first longitudinal edge and a first main panel, the intermediate panel forming a second seam with a second longitudinal edge opposite the first longitudinal edge and a second main panel opposite the first seam.

In the embodiments, the structure with the wide middle and the narrow two ends of the middle sheet is beneficial to the structural outline of the air bag to be more three-dimensional, which not only overcomes the defects of the traditional 2D air bag, namely the air bag has limited thickness in the Y direction and is greatly influenced by the folding of the air bag in the unfolding process; and optimizes the multi-cavity structure of the known 3D airbag so that the seat side airbag according to these embodiments has the advantages of light weight, low cost and excellent protection effect. The seat side airbag in these embodiments may be visually referred to as a 2.5D airbag. Typically, the Y-direction corresponds to a lateral direction in a vehicle coordinate system, with the vehicle seat in a conventional orientation.

In some embodiments, the first and second main panels may provide sufficient support to the intermediate panel such that the intermediate panel can be well deployed during inflation of the air bag, and the width of the air bag in the Y-direction in the inflated state of the air bag may be significantly increased, which may greatly increase the area of the contact area of the air bag for contact with the occupant's arm, such that the occupant's arm may be smoothly and reliably lifted.

In some embodiments, in the flattened condition of the air bag, the first main panel and the second main panel may be superimposed, in which superimposed condition the boundary of the first main panel and the second main panel forms a substantially straight first portion of the edge of the air bag, the second seam forms a substantially circular arc-shaped second portion immediately adjacent to both ends of the first portion of the edge of the air bag, and the first seam forms a circular arc line immediately adjacent to both ends of the first portion of the edge of the air bag extending inside the edge of the air bag.

In some embodiments, the airbag may have a first fold line and a second fold line, and in the flattened state of the airbag, the first fold line and the second fold line and the linear portion of the edge of the airbag may substantially enclose a right triangle, wherein the first fold line is substantially perpendicular to the linear portion of the edge of the airbag.

In some embodiments, in the flattened state of the airbag, the first fold line and the second fold line may intersect on a circular arc portion of the edge of the airbag, and the second fold line and the linear portion of the edge of the airbag may intersect at an upper end of the linear portion of the edge of the airbag.

In these embodiments, by the special design of the fold line, the direction of deployment of the upper part of the airbag can be well adapted to the angle of the arms of the occupant (dummy) during inflation of the airbag, so that the airbag can well contact the arms and smoothly lift them.

In some embodiments, the seat side airbag may include a gas guide bag disposed inside the airbag, the gas guide bag having a lower opening, the gas guide bag being configured to guide gas input to the gas guide bag from above to below during inflation of the gas guide bag, and thereby fill the gas guide bag from below to above with a gas flow exiting from the lower opening of the gas guide bag.

In these embodiments, by the structural design of the air bag sealed at the upper end and ventilated at the lower end, in combination with the design of the aforementioned fold line, the air bag is inflated and deployed from bottom to top during inflation of the air bag, and the deployment direction of the upper portion of the air bag can be well adapted to the angle of the arm of the occupant (dummy), so that the air bag can well contact the arm and smoothly lift the arm.

In some embodiments, at least a majority, e.g., at least 3/4, of the intermediate portion may be part of a sphere in the inflated state of the air bag.

In some embodiments, at least a majority (e.g., at least 3/4) of the intermediate portion, a region of the first side portion adjacent the at least majority of the intermediate portion, and a region of the second side portion adjacent the at least majority of the intermediate portion may be part of a sphere in the inflated condition of the air bag.

In some embodiments, in the inflated state of the air bag, the area of the first side portion may occupy a majority (e.g., about 2/3 or more) of the area of the first side portion, and the area of the second side portion occupies a majority (e.g., about 2/3 or more) of the area of the second side portion.

In some embodiments, the air bag is a single-cavity air bag.

In an advantageous embodiment, the basic structure of the seat-side airbag is adjusted in comparison with the known seat-side airbags, and the safety effect of the seat-side airbag and the stability against occupant protection can be significantly improved in combination with the design of the gas-guiding bag and the folded form of the gas bag.

The technical features mentioned above, the technical features to be mentioned below and the technical features shown in the drawings alone may be arbitrarily combined with each other as long as the combined technical features are not contradictory. All possible combinations of features are specifically described herein. Any one of the plurality of sub-features contained in the same sentence may be applied independently, and not necessarily with other sub-features.

Drawings

Exemplary embodiments will now be described with reference to the schematic drawings. Wherein:

fig. 1 is a plan view of a sheet of a seat side air bag according to an embodiment of the application.

Fig. 2 is a plan view of another sheet of seat side air bag.

Fig. 3 is a plan view of the airbag of the seat side airbag in a flattened state.

Fig. 4 is a perspective view of the front view of the airbag of the seat side airbag in an inflated state.

Fig. 5 is a perspective view of the airbag of the seat side airbag in an inflated state, as seen from the occupant side.

Fig. 6 is a perspective view of the airbag of the seat side airbag in an inflated state, as seen from the vehicle body side.

Fig. 7 is a schematic view of a seat side airbag for use in a vehicle.

Detailed Description

Specific embodiments of the present application will now be further described with reference to the accompanying drawings.

Hereinafter, exemplary embodiments of the present application will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numbers may refer to the same or similar components. The present application will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the application are shown. It should be understood that the description of the exemplary embodiments should not limit the application to these exemplary embodiments. On the contrary, the application is intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which are included within the scope of the application as defined by the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

In the sense of the present application, the term "vehicle" is understood to mean a vehicle in general, such as a land vehicle, a water vehicle (or a ship) or an air vehicle (or an aircraft), in particular a motor vehicle, such as a passenger car or a truck.

For example, the term "vehicle seat" is understood to mean a seat for a means of transport in general, for example a seat for a motor vehicle, a seat for a ship, a seat for an aircraft, etc.

Fig. 1 is a plan view of one sheet 1 of a seat-side airbag according to an embodiment of the application, and fig. 2 is a plan view of the other sheet 2 of the seat-side airbag, the two sheets 1, 2 together constituting an airbag 100 of the seat-side airbag. In the embodiment shown, the airbag 100 may be spherical in the inflated state, and thus the two sheets 1, 2 may not be strictly planar in the flattened state. Likewise, the airbag 100 in the flattened state shown in fig. 3, which will be mentioned below, is not strictly planar either.

The sheet 1 in the flattened state as shown in fig. 1 may comprise a first main sheet 10 and a second main sheet 20, the two main sheets 10, 20 being divided by a straight boundary 3 indicated by a dashed line. The first main sheet 10 and the second main sheet 20 are constituted as two portions of one integral sheet 1 as shown in fig. 1. In an embodiment not shown, the first main panel 10 and the second main panel 20 may also be two separate sheets connected to each other on a straight border, for example sewn. The first main sheet 10 has a substantially elliptical profile in the flattened state, more precisely, the profile line of the first main sheet 10 is substantially a large part of the complete elliptical profile, both ends of the profile of the first main sheet 10 being connected by the broken line of the boundary 3. The second main panel 20 has a substantially circular contour in the flattened state, more precisely the contour line of the second main panel 20 is substantially a large part of the complete circular contour, both ends of the contour of the second main panel 20 being connected by the broken line of the boundary 3. The contour of the first main panel 10 and the contour of the second main panel 20 form two opposite recesses 11, 12 between each other.

As shown in fig. 2, the intermediate sheet 30 is composed of one single sheet 2. The intermediate sheet 30 or the sheet 2 extends in an elongated manner in the flattened state. The intermediate sheet 30 has a width that increases from both end portions thereof toward the middle thereof. The intermediate panel 30 forms a first seam 6 with the first longitudinal edge 31 and the first main panel 10 (more specifically, the arcuate edges of the first main panel) (see fig. 3-5). The intermediate panel 30 forms a second seam 7 (see fig. 3, 4 and 6) opposite the first seam 6 with a second longitudinal edge 32 opposite the first longitudinal edge 31 and the second main panel 20 (more specifically, the arcuate edge of the second main panel). Typically, each seam 6, 7 may be realized by means of a sewing thread. The middle sheet 30 may further have a vent hole 4. During inflation of the air bag, if the pressure of the air in the air bag exceeds a predetermined threshold, the air can be discharged from the air bag 100 through the air discharge hole 4, preventing the internal pressure of the air bag from being excessively high, resulting in injury to the occupant. The exhaust hole 4 can be mainly used for adjusting the pressure in the cavity of the air bag 100, so as to ensure that the air bag 100 achieves an optimal protection effect in the collision process. By properly designing the position of the vent holes 4 on the intermediate sheet 30, the vent holes 4 are not blocked during expansion and thus lose the pressure limiting function.

Fig. 3 is a plan view of the airbag 100 of the seat side airbag in a flattened state. In the flattened state of the airbag 100, the first main panel 10 overlaps the second main panel 20, wherein the boundary 3 of the first main panel 10 and the second main panel 20 forms a straight first portion of the edge of the airbag in the flattened state, the second seam 7 forms a rounded second portion of the edge of the airbag in the flattened state, which second portion is immediately adjacent to both ends of the first portion, and the first seam 6 forms a rounded line extending inside the edge of the airbag in the flattened state and immediately adjacent to both ends of the straight first portion of the edge of the airbag. For the sake of simplicity, the vent holes 4 of the airbag 100 provided in the intermediate panel 30 are not depicted in fig. 3.

In fig. 3, a schematically depicted gas-conducting bag 40 is visible, which is arranged inside the gas bag 100. The air guide bag 40 is closed at an upper end and has a lower opening. The gas guide bag 40 is configured such that gas inputted into the gas guide bag 40 from a gas generator, not shown, is guided from above to below during inflation of the gas guide bag, and the gas flow exiting from the opening of the lower portion of the gas guide bag 40 is allowed to fill the gas guide bag 100 from below to above.

Also visible in fig. 3 are two fold lines of the airbag 100, namely a first fold line 8 and a second fold line 9. In the flattened state of the airbag 100, the first fold line 8 and the second fold line 9 and the straight portions of the edges of the airbag 100 (or the boundary 3 of the first main panel and the second main panel) may substantially enclose a right triangle, wherein the first fold line 8 is perpendicular to the straight portions of the edges of the airbag 100. In the flattened state of the airbag, the first fold line 8 and the second fold line 9 may intersect on a circular arc-shaped portion of the edge of the airbag, and the second fold line 9 and a straight portion of the edge of the airbag may intersect at an upper end portion of the straight portion of the edge of the airbag. In the embodiment shown, by the special design of the two fold lines 8, 9, the direction of deployment of the upper part of the airbag 100 can be well adapted to the angle of the arms of the occupant (dummy) during inflation of the airbag 100, so that the airbag 100 can well contact the arms and smoothly lift them. When folding the airbag 100 in its flattened state, it may be folded first along the first fold line 8 and then along the second fold line 9. The reverse folding order is also possible.

The seat side airbag may include or be connected to a gas generator, not shown. For example, the gas generator may be arranged on the first main sheet 10 on the passenger side and in close proximity to the boundary 3 between the first main sheet and the second main sheet. The seat side airbag may be mounted to the vehicle seat, for example to the armature of the seat back of the vehicle seat, in an area 5 (see fig. 3) immediately adjacent to the boundary 3 of the first and second main panels.

When the seat side airbag is activated, the gas generator is activated and generates gas, which is inputted into the airbag 40, and a top-down gas flow is formed in the airbag 40 under the guide of the airbag 40, which can fill the airbag 100 from below to above after leaving the opening of the lower portion of the airbag 40.

Fig. 4 to 6 show different perspective views of the airbag 100 of the seat-side airbag when activated, wherein fig. 4 is a perspective view of the airbag 100 of the seat-side airbag in front view in the inflated state, fig. 5 is a perspective view of the airbag 100 of the seat-side airbag in the inflated state as seen from the occupant side, and fig. 6 is a perspective view of the airbag 100 of the seat-side airbag in the inflated state as seen from the vehicle body side.

As can be seen from fig. 4 to 6, in the inflated state of the airbag 100, the airbag 100 may be substantially spherical, or spheroidal or approximately spherical. The airbag 100 in the inflated state includes a first side surface portion 101 on the occupant side, a second side surface portion 102 on the vehicle body side opposite to the first side surface portion 101, and an intermediate portion 103 connecting the first side surface portion 101 with the second side surface portion 102. In the transverse direction, the first side portion and the second side portion are steep and the middle portion is gentle.

The airbag 100 is configured such that the first side portion 101 and the second side portion 102 support the intermediate portion 103 during inflation of the airbag 100, and the intermediate portion 103 lifts the arms of the occupant. In the inflated state of the airbag 100, at least a substantial portion of the intermediate portion 103, e.g., at least 3/4, may be part of a sphere. It is particularly advantageous that in the inflated state of the airbag 100, at least a substantial part (e.g. at least 3/4) of the intermediate portion 103, a region of the first side portion 101 adjacent to the at least substantial part of the intermediate portion 103 (e.g. the region occupies a substantial part of the area of the first side portion 101, e.g. about 2/3) and a region of the second side portion 102 adjacent to the at least substantial part of the intermediate portion 103 (e.g. the region occupies a substantial part of the area of the second side portion 102, e.g. about 2/3) may be part of a sphere.

In the embodiment shown, the first main panel 10 is configured for constituting the first side portion 101 in the inflated condition of the air bag 100, the second main panel 20 is configured for constituting the second side portion 102 in the inflated condition of the air bag 100, and the intermediate panel 30 is configured for constituting the intermediate portion 103 in the inflated condition of the air bag 100.

Alternatively, in an embodiment not shown, the intermediate sheet 30 may be formed by one integral sheet with the first main sheet 10 and/or the second main sheet 20 by suitable cutting.

Alternatively, in an embodiment not shown, the airbag 100 may be constructed by a plurality of sheets, each of which may provide part or all of any one or any plurality of the first side portion 101, the second side portion 102, and the intermediate portion 103 of the airbag 100, by suitable cutting.

Furthermore, as can be seen in fig. 4, the first seam 6 and the second seam 7 come together in the respective lower end sections.

Fig. 7 is a schematic view of the seat side airbag shown in fig. 1 to 6 applied in a vehicle, in which the seat side airbag has been activated and the airbag 100 of the seat side airbag is in an inflated state. In fig. 7, a vehicle seat 50 equipped with a seat side airbag, an arm 60 of a dummy, and a vehicle body portion 70 are schematically depicted. As can be seen from fig. 7, at the time of a side collision, a vehicle body portion adjacent to the vehicle seat 50 may intrude toward the vehicle interior and thus press the seat side airbag, more specifically, press the airbag 100 in the inflated state from the second side surface portion 102 of the vehicle body side of the airbag 100. During inflation of the airbag 100, the first main panel 10 on the occupant side and the second main panel 20 on the vehicle body side are responsible for providing support to the intermediate panel 30 so that the intermediate panel 30 is sufficiently unfolded, the contact area of the airbag 100 with the arm is enlarged compared to the prior art, so that the airbag 100 is more easily lifted up and the arm is not easily slipped off the airbag 100. Because of the large contact area of the airbag 100 for the arm, the arm 60 can be reliably lifted, and therefore, it is possible to avoid the arm from pressing against the rib of the trunk during a side collision of the vehicle, which may cause an excessive amount of rib compression.

It will be understood that, although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element.

Although the exemplary examples of the present application have been described for illustrative purposes, the present disclosure is not limited to the specific exemplary embodiments described above, but various modifications can be made by those skilled in the art to which the present application pertains without departing from the scope and spirit of the present application as disclosed in the appended claims. Such modifications are to be construed as falling within the scope and spirit of the application.

Claims (9)

1. A seat-side airbag comprising an airbag (100), characterized in that in the inflated state of the airbag is spherical, the airbag comprising a first side portion (101) on the occupant side, a second side portion (102) on the vehicle body side opposite the first side portion, and a middle portion (103) connecting the first side portion with the second side portion.

2. A seat-side airbag comprising an airbag (100), characterized in that in an inflated state of the airbag comprises a first side portion (101) on the occupant side, a second side portion (102) on the vehicle body side opposite the first side portion, and a middle portion (103) connecting the first side portion with the second side portion, the airbag being configured such that during inflation of the airbag the first side portion and the second side portion support the middle portion, and the middle portion lifts the occupant's arm.

3. The seat-side airbag according to claim 1 or 2, characterized in that the airbag comprises a first main panel (10) configured for constituting the first side portion in the inflated state of the airbag and a second main panel (20) configured for constituting the second side portion in the inflated state of the airbag, and an intermediate panel (30) configured for constituting the intermediate portion in the inflated state of the airbag, the intermediate panel being a sheet separate from the first main panel and the second main panel.

4. A seat side airbag according to claim 3, wherein the first and second main panels are constructed as two parts of one integral sheet or the first and second main panels are two separate interconnected sheets; and/or

The first and second main panels have straight boundaries (3); and/or

The first and second main panels have an oval or circular profile in the flattened state, respectively, and the profile of the first and second main panels form two opposite recesses (11, 12) between each other.

5. The seat side airbag according to claim 3 or 4, wherein the contour of the first main panel is within the contour of the second main panel when the first main panel and the second main panel are superimposed in the flattened state, such that in the inflated state of the airbag, the seam of the second main panel and the intermediate panel is higher than the seam of the first main panel and the intermediate panel in the lateral direction of the airbag; and/or

The intermediate sheet extending elongate in a flattened condition, the intermediate sheet having a width which increases from its two ends towards its middle, the intermediate sheet forming a first seam (6) with a first longitudinal edge (31) with a first main sheet, the intermediate sheet forming a second seam (7) with a second longitudinal edge 932 opposite the first longitudinal edge with a second main sheet opposite the first seam; and/or

In the flattened state of the air bag, the first main sheet is overlapped with the second main sheet, the boundary of the first main sheet and the second main sheet forms a straight first part of the edge of the air bag, the second seam forms a circular arc-shaped second part which is adjacent to two ends of the first part of the edge of the air bag, and the first seam forms a circular arc line which is adjacent to two ends of the first part of the edge of the air bag and extends inside the edge of the air bag.

6. A seat-side airbag according to any one of claims 1 to 5, characterized in that the airbag has a first fold line (8) and a second fold line (9), which, in the flattened state of the airbag, enclose a right triangle with the straight portions of the edges of the airbag, wherein the first fold line is perpendicular to the straight portions of the edges of the airbag;

preferably, in the flattened state of the air bag, the first fold line and the second fold line intersect on a circular arc-shaped portion of the edge of the air bag, and the second fold line and a straight line portion of the edge of the air bag intersect at an upper end portion of the straight line portion of the edge of the air bag.

7. The seat-side airbag according to any one of claims 1 to 6, characterized in that the seat-side airbag comprises a gas-guiding bag (40) arranged inside the gas bag, the gas-guiding bag having a lower opening, the gas-guiding bag being configured such that during inflation of the gas bag, gas input to the gas-guiding bag is guided from above downwards, and such that the gas flow exiting from the lower opening of the gas-guiding bag fills the gas bag from below upwards.

8. The seat side airbag according to any one of claims 1 to 7, wherein at least a majority of the intermediate portion is a portion of a spherical surface in an inflated state of the airbag; and/or

In the inflated state of the air bag, at least a major part of the intermediate portion, a region of the first side portion adjacent to the at least major part of the intermediate portion and a region of the second side portion adjacent to the at least major part of the intermediate portion are part of a sphere; and/or

In the inflated state of the air bag, the area of the first side portion occupies a majority of the area of the first side portion and the area of the second side portion occupies a majority of the area of the second side portion.

9. The seat side airbag according to any one of claims 1 to 8, wherein the airbag is single-chambered.