Airbag cushion

Abstract

An airbag cushion according to an embodiment can include a main body including a rear panel having a rear coupling line and a front panel having a front coupling line coupled to the rear coupling line, and the front panel is disposed to face a passenger when inflated by a gas introduced into an inner space formed between the front panel and the rear panel; a protruding chamber that is inflated and protrudes from the front panel toward the passenger; wherein the protruding chamber is provided with a folded structure in a state in which a portion of the front panel is folded, and the folded structure is unfolded and inflated as the main body is inflated by the gas introduced into the inner space.

Description

[0001] Cross-references to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2022-0076082, filed on June 22, 2022, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] The present invention relates to an airbag cushion, and more specifically, to an airbag cushion capable of increasing restraint on passengers. Background Technology

[0004] Generally, an airbag is a device constructed to inflate by the pressure of gas introduced into the airbag cushion when a vehicle accident occurs, so as to protect passengers by the force of the cushion.

[0005] To secure their overseas sales networks, automakers are developing and selling vehicles that meet the small overlap crash test administered by the American Insurance Institute for Highway Safety (IIHS).

[0006] Small overlap crash tests were conducted under the conditions of a vehicle speed of 64 km / h, an angle of 0 degrees in the direction of travel, an offset of 25%, and a rigid barrier. However, in the future, the task should be to achieve new frontal research on moving deformable barrier tests that take passenger safety into account.

[0007] The new frontier research on the moving deformable barrier (RMDB) was tested under the following conditions: vehicle speed of 90.1 km / h, diagonal angle of 15 degrees, offset of 35%, and the barrier being the research moving deformable barrier (RMDB). Upon impact, the mannequin excessively shifted laterally, and when the face contacted the airbag, the head rotated excessively, potentially causing severe brain injury.

[0008] [Related Technologies]

[0009] [Patent Documents]

[0010] Korean Patent No. 10-1209927. Summary of the Invention

[0011] This invention relates to providing an airbag cushion that can protect passengers by effectively restraining the rotational movement of their heads during a vehicle collision.

[0012] The purpose of this invention is not limited to the purposes described above, and those skilled in the art will clearly understand other purposes not described above through the following description.

[0013] According to an aspect of the invention, an airbag cushion is provided, the airbag cushion comprising a body and a protruding chamber, the body comprising a rear panel having a rear joint line and a front panel having a front joint line joined to the rear joint line, and the front panel being configured to face a passenger when inflated by gas introduced into an internal space formed between the front panel and the rear panel; the protruding chamber inflates and protrudes from the front panel toward the passenger; wherein the protruding chamber has a folding structure in a state where a portion of the front panel is folded, and the folding structure unfolds and inflates as the body inflates by gas introduced into the internal space.

[0014] The front panel may include a protrusion that partially projects from at least one of a left surface and a right surface based on a centerline along a longitudinal direction; the protrusion may include an upper surface, a lower surface, and an outer surface connecting one end of the upper surface to one end of the lower surface; a cutting line that cuts inward toward the centerline may be formed at the portion of the lower surface that projects outward from the one side surface; and with the outer surface configured to match the one side surface such that the front bonding line is continuously connected to and extends along the one side surface, a folding structure may be formed on the cutting line, the folding structure being folded parallel to the centerline to form the protruding chamber.

[0015] A chamber strip may be attached to the surface of the front panel facing the interior space, the chamber strip supporting an opening facing the interior space to maintain the shape of the opening in the expanded state of the protruding chamber; and one end portion of the chamber strip may be sewn to the edge of the outer surface of the protrusion and the other end portion may be sewn to the central portion of the front panel, such that the chamber strip is configured to span the folded structure.

[0016] The airbag device may also include a front tether, one end of which is connected to the central portion of the front panel and the other end of which is connected to the rear panel.

[0017] A chamber reinforcement patch may be attached to the front panel's surface facing the interior space and the opposite surface, the chamber reinforcement patch sealing the cut line in the folded structure state; each chamber reinforcement patch may be configured to cover the cut line; one end portion of the chamber reinforcement patch may be sewn to the edge of the outer surface of the protrusion and the edge of the side surface; the other end portion of the chamber reinforcement patch may be sewn to the front panel at the inner end of the cut line; and the upper and lower ends of the chamber reinforcement patch may be sewn to the front panel along the cut line between the upper and lower ends.

[0018] The airbag device may include a seam protector located between the edges of the rear panel and the front panel and integrally stitched to the rear panel and the front panel; wherein the seam protector can strengthen the portion of the rear panel and the front panel that are stitched together.

[0019] The upper surface of the protrusion can be positioned at the same level as the upper surface of the front panel so as to be continuously connected to the upper surface.

[0020] The upper surface of the protrusion may be positioned at a different level from the upper surface of the front panel, so as to be stepped relative to the upper surface.

[0021] At the portion of the upper surface that protrudes outward from the one side surface, a cutting line that cuts inward toward the centerline can be formed in the front panel; and the upper surface can be continuously connected to the cutting line.

[0022] The front bonding line may include a first front bonding line disposed in the upper portion of the front panel and a second front bonding line disposed in the lower portion of the front panel; and the rear bonding line may include a first rear bonding line bonded to the first front bonding line, a second rear bonding line bonded to the second front bonding line, and a third rear bonding line disposed between the first rear bonding line and the second rear bonding line and including a first bonding portion and a second bonding portion configured to be bonded to each other.

[0023] The first front bonding line may include a first front central portion and a first front side portion, the first front central portion forming the upper surface of the front panel, the first front side portion extending downward from both ends of the first front central portion and forming the side surface of the front panel; and the second front bonding line may include a second front side portion and a second front central portion, the second front side portion having a width smaller than the width of the first front side portion and extending downward from the first front side portion to form the side surface of the front panel, the second front central portion connecting to the lower end of the second front side portion to form the lower surface of the front panel.

[0024] The first rear bonding line may include a first rear central portion and a first rear side portion, the first rear central portion being bonded to the first front central portion, one end of the first rear side portion being connected to the first rear central portion, and the other end of the first rear side portion being connected to the first bonding portion, and the first rear side portion being bonded to the first front side portion; and the second rear bonding line may include a second rear central portion and a second rear side portion, the second rear central portion being bonded to the second front central portion, one end of the second rear side portion being connected to the second rear central portion, and the other end of the second rear side portion being connected to the second bonding portion, and the second rear side portion being bonded to the second front side portion.

[0025] The rear panel may include a first panel and a second panel. The first panel has a first rear seam line, a first seam portion, and a first seam area disposed below the first seam portion. The second panel has a second rear seam line, a second seam portion, and a second seam area disposed below the second seam portion. A first entrance may be formed between the first seam portion and the first seam area in the first panel. A second entrance may be formed between the second seam portion and the second seam area in the second panel. The first panel and the second panel may be configured to overlap to connect the first entrance and the second entrance when the second panel is flipped so that the second seam area faces upward. The first panel and the second panel are stitched together and connected to each other in the first seam area and the second seam area. Attached Figure Description

[0026] The above and other objects, features, and advantages of the present invention will become more apparent to those skilled in the art from the detailed description of exemplary embodiments of the invention with reference to the accompanying drawings, in which:

[0027] Figure 1 This is a schematic perspective view illustrating an airbag cushion according to an embodiment of the present invention;

[0028] Figure 2 It's a diagram. Figure 1 A schematic cross-sectional view of the airbag cushion;

[0029] Figure 3 It is a schematic diagram illustrating the front and rear panels that constitute the main body of the airbag cushion;

[0030] Figure 4 The diagram illustrates the composition. Figure 3 A schematic diagram of the first and second panels of the rear panel;

[0031] Figure 5 This is a schematic diagram illustrating a front panel with protrusions;

[0032] Figure 6 This is a schematic diagram illustrating the front panel that forms the folded structure.

[0033] Figure 7 It is along Figure 6 A schematic cross-sectional view taken by line AA in the diagram;

[0034] Figure 8 It is along Figure 6 A schematic cross-sectional view taken from lines BB and CC;

[0035] Figure 9 This is a schematic diagram illustrating an example of front panel modifications;

[0036] Figure 10 It is along Figure 9 A schematic cross-sectional view of line DD;

[0037] Figure 11 This is a schematic diagram of a front panel according to another embodiment;

[0038] Figure 12 These are a set of schematic diagrams illustrating examples of modifications to the front panel;

[0039] Figure 13 It is a schematic diagram illustrating a front panel according to yet another embodiment; and

[0040] Figure 14 It is along Figure 13 A schematic cross-sectional view taken from line EE in the diagram. Detailed Implementation

[0041] Because this invention allows for various modifications and has many embodiments, specific embodiments will be illustrated and described in the accompanying drawings. However, this is not intended to limit the invention to the specific embodiments, and it should be understood that all modifications, equivalents, and substitutions falling within the spirit and scope of this invention are covered herein. Although the terms "first," "second," etc., may be used herein to describe various different elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of the invention, a second element may be referred to as a first element, and a first element may similarly be referred to as a second element. The terms "and / or" include any one or any combination of the various related listed items.

[0042] When a component is referred to as "connected" or "linked" to another component, it is understood that the component can be directly connected to or linked to the other component, or that other components can exist between the two. Conversely, when a component is referred to as "directly connected" or "directly linked" to another component, it is understood that there is no intermediary component.

[0043] In the description of the embodiments, when any element is described as being formed on or under another element, such a description includes both cases where the two elements are formed in direct contact with each other and cases where the two elements are in indirect contact with each other and one or more other elements are located between the two elements. Furthermore, when an element is described as being formed on or under another element, such a description can include cases where the one element is formed on the upper or lower side relative to the other element.

[0044] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. Unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In this specification, it should be further understood that when the terms “comprising,” “including,” “containing,” or “with” are used herein, they specify the presence of the stated features, numbers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and / or groups thereof.

[0045] Unless otherwise defined, all terms used herein, including technical and scientific terms, shall have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in commonly used dictionaries shall be interpreted as having meanings consistent with their meanings in the relevant technical context, and shall not be ideally or overly formally interpreted unless expressly defined herein.

[0046] In the following description of embodiments with reference to the accompanying drawings, identical or corresponding parts will be indicated by the same or corresponding reference numerals in all the drawings, and redundant descriptions will be omitted.

[0047] Figure 1 This is a schematic perspective view illustrating an airbag cushion according to an embodiment of the present invention. Figure 2 It's a diagram. Figure 1 A schematic cross-sectional view of the airbag cushion, and Figure 3 This is a schematic diagram illustrating the front and rear panels that form the main body of the airbag cushion.

[0048] Referring to the accompanying drawings, the airbag cushion 1 according to an embodiment of the present invention may include a main body 10 and a protruding chamber 20.

[0049] The main body 10 can be connected to an inflator (not shown) that generates gas G, and is configured to expand by the gas G generated by the inflator.

[0050] The main body 10 may include a rear panel 100 and a front panel 200, the rear panel 100 including a rear bonding line 100L and the front panel 200 including a front bonding line 200L bonded to the rear bonding line 100L. In this embodiment, each of the rear panel 100 and the front panel 200 may be formed of fabric cut to a predetermined shape.

[0051] A gas inlet 101 connected to an air compressor can be formed in the rear panel 100. Furthermore, a vent 102 for discharging gas through the inlet can be formed in the rear panel 100.

[0052] The front panel 200 can be combined with the rear panel 100 to form an interior space R, and the front panel 200 is configured to face the passenger when gas G is introduced into the interior space R through gas inlet 101 to cause the interior space R to expand.

[0053] The protruding chamber 20 may be provided on the front panel 200, expand together with the main body 10, and be formed to protrude from the front panel 200 toward the passenger.

[0054] Specifically, the protruding chamber 20 may have a folding structure 201 provided with a portion of the front panel 200 folded. Furthermore, the folding structure 201 may be configured to unfold and expand when the gas G introduced into the internal space R by the main body 10 expands.

[0055] In other words, the protruding cavity 20 is formed as part of the forming body 10 of the front panel 200, rather than being manufactured separately from and attached to the body 10. Accordingly, the protruding cavity 20 is integrally formed with the front panel 200, and since separate additional processes and components for forming the protruding cavity 20 can be omitted, it has the effect of reducing the overall manufacturing process and cost.

[0056] The structure of the front panel 200 and the rear panel 100 will be described in more detail below.

[0057] Referring to the accompanying drawings, a front bonding line 200L is formed along the edge of the front panel 200, and the front bonding line 200L may include a first front bonding line 210 disposed on the upper portion of the front panel 200 and a second front bonding line 220 disposed on the lower portion of the front panel 200.

[0058] In this embodiment, the first front bonding line 210 may include a first front central portion 211 and a first front side portion 212. The first front central portion 211 forms the upper surface 200a of the front panel 200, and the first front side portion 212 extends downward from both ends of the first front central portion 211 and forms the side surface 200b of the front panel 200.

[0059] Furthermore, the second front bonding line 220 may include a second front side portion 222 and a second front central portion 221. Each second front side portion 222 has a width smaller than that of each first front side portion 212, extends downward from the first front side portion 212, and forms a side surface 200b of the front panel 200. The second front central portion 221 connects to the lower end of the second front side portion 222 to form a lower surface 200c of the front panel 200.

[0060] Referring to the accompanying drawings, a rear bonding line 100L is formed on the rear panel 100, and the rear bonding line 100L may include a first rear bonding line 110 and a second rear bonding line 120. The first rear bonding line 110 is bonded to a first front bonding line 210, and the second rear bonding line 120 is disposed below the first rear bonding line 110 and bonded to a second front bonding line 220. Furthermore, the rear bonding line 100L may include a third rear bonding line 130, which is disposed between the first rear bonding line 110 and the second rear bonding line 120, and includes a first bonding portion 131 and a second bonding portion 132 configured to be connected to each other.

[0061] In this embodiment, the first rear bonding line 110 may include a first rear central portion 111 and a first rear side portion 112. The first rear central portion 111 is bonded to the first front central portion 211. One end of the first rear side portion 112 is connected to the first rear central portion 111 and the other end is connected to the first bonding portion 131. The first rear side portion 112 is bonded to the first front side portion 212.

[0062] The first rear central portion 111 may have a length corresponding to the first front central portion 211, and the first rear side portions 112 may be disposed on both sides of the first rear central portion 111, having a smooth curved shape and extending downward. Each of the first rear side portions 112 may have a length corresponding to each of the first front side portions 212.

[0063] The second rear coupling line 120 may include a second rear central portion 121 and a second rear side portion 122, the second rear central portion 121 being coupled to a second front central portion 221, one end of the second rear side portion 122 being connected to the second rear central portion 121 and the other end being connected to a second coupling portion 132, and the second rear side portion 122 being coupled to a second front side portion 222.

[0064] The second rear central portion 121 may have a length corresponding to the second front central portion 221, and the second rear side portions 122 may be disposed on both sides of the second rear central portion 121, protruding toward each other, having a convex curved shape, and extending downward. Each of the second rear side portions 122 may have a length corresponding to each of the second front side portions 222.

[0065] In the rear bonding line 100L, the third rear bonding line 130 is the portion that does not bond with the front panel 200. The first bonding portion 131 can be configured as a pair of first bonding portions 131, extending from both ends of the first rear portion 112 toward the second rear bonding line 120. The second bonding portion 132 can also be configured as a pair of second bonding portions 132, extending from both ends of the second rear portion 122 toward the first rear bonding line 110.

[0066] Each of the first connecting parts 131 and each of the second connecting parts 132 may have the same length.

[0067] The first connecting portion 131 and the second connecting portion 132 can be connected to each other on the left and right sides based on the gas inlet 101 located at the center of the rear panel 100. That is, one end of the first connecting portion 131 can be connected to the first rear portion 112, and the other end can be connected to the second connecting portion 132. One end of the second connecting portion 132 can be connected to the second rear portion 122, and the other end can be connected to the first connecting portion 131.

[0068] Based on the centerline C1 along the longitudinal direction of the rear panel 100, the lateral width between the first joint portions 131 and the lateral width between the second joint portions 132 can gradually increase, and the first joint portions 131 and the second joint portions 132 can extend from the central portion of the rear panel 100 in opposite directions. Accordingly, the rear panel 100 can substantially have an hourglass shape with an elongated central portion.

[0069] Figure 4 This is a schematic diagram illustrating the first panel 100A and the second panel 100B constituting the rear panel 100. In this embodiment, as shown in... Figure 4 In the middle, the rear panel 100 may include a first panel 100A and a second panel 100B.

[0070] The first panel 100A may include a first rear bonding line 110, a first bonding portion 131, and a first bonding area 141 disposed below the first bonding portion 131. Furthermore, a vent 102 may be included in the first panel 100A. The second panel 100B may include a second rear bonding line 120, a second bonding portion 132, and a second bonding area 142 disposed below the second bonding portion 132.

[0071] Furthermore, the first inlet 101A may be formed between the first joining portion 131 and the first joining region 141 in the first panel 100A, and the second inlet 101B may be formed between the second joining portion 132 and the second joining region 142 in the second panel 100B. The first inlet 101A and the second inlet 101B may form a gas inlet 101 in a state where the first inlet 101A and the second inlet 101B overlap and are connected to each other.

[0072] The rear panel 100, including the first panel 100A and the second panel 100B, can be formed such that, with the second panel 100B flipped so that the second bonding region 142 faces upward, the first panel 100A and the second panel 100B are arranged to overlap to connect the first inlet 101A to the second inlet 101B, and the first panel 100A and the second panel 100B are stitched and connected in the first bonding region 141 and the second bonding region 142.

[0073] Meanwhile, with the rear panel 100 folded along the gas inlet 101 in the central portion, the first connecting portion 131 can be connected to the second connecting portion 132. Accordingly, the end of the first rear portion 112 connected to the first connecting portion 131 can be continuously connected to the end of the second rear portion 122 connected to the second connecting portion 132.

[0074] With the first rear portion 112 and the second rear portion 122 continuously connected to each other, the first front portion 212 of the front panel 200 is attached to the first rear portion 112, and subsequently the second front portion 222 can be attached to the second rear portion 122. Furthermore, the first front center portion 211 of the front panel 200 can be attached to the first rear center portion 111 of the rear panel 100, and the second rear center portion 121 can be attached to the second front center portion 221.

[0075] As described above, the body 10 of the airbag cushion 1 can be completely formed by joining the rear panel 100 and the front panel 200 along the rear joint line 100L and the front joint line 200L.

[0076] In this embodiment, a seam protector 300 may be provided between the rear panel 100 and the front panel 200.

[0077] A seam protector 300 may be located between the rear panel 100 and the front panel 200 to serve as an edge reinforcement member for strengthening the seam portion S between the rear panel 100 and the front panel 200. The seam protector 300 extends along the edge and is integrally stitched with the rear panel 100 and the front panel 200.

[0078] The seam protector 300 may be formed of the same material as the rear panel 100 and the front panel 200, such as fabric, but is not limited thereto.

[0079] Meanwhile, the airbag cushion 1 according to an embodiment of the present invention may include a protruding chamber 20 connected to the body 10 and expanding together with the body 10, and the protruding chamber 20 may be integrally disposed with the front panel 200.

[0080] Specifically, the protruding chamber 20 may have a folding structure 201 provided with a portion of the front panel 200 folded. The structure of the front panel 200 will be described in more detail below.

[0081] Figure 5 This is a schematic diagram illustrating a front panel 200 with a protrusion 230. Furthermore, Figure 6 This is a schematic diagram of the front panel 200 in which the folding structure 201 is formed.

[0082] Referring to the accompanying drawings, the front panel 200 may include a protrusion 230 that protrudes outwardly from at least one of the left and right side surfaces 200b based on a centerline C2 along the longitudinal direction.

[0083] The protrusion 230 may include an upper end surface 231, a lower end surface 232, and an outer surface 233 connecting one end of the upper end surface 231 and one end of the lower end surface 232. In addition, a cutting line 234 that cuts inward toward the center line C2 may be formed at the portion of the lower end surface 232 that protrudes outward from a side surface 200b.

[0084] With the outer surface 233 of the protrusion 230 configured to match a side surface 200b of the front panel 200 such that the front bonding line 200L is continuously connected to and extends along the side surface, a folding structure 201 can be formed on the cutting line 234. This folding structure 201 is folded parallel to the center line C2 to form a protruding chamber 20. In other words, the folding structure 201 can be formed by pulling the protruding length of the protrusion 230 inward along the cutting line 234 and folding the front panel 200 along the folding line FL. The size of the protruding chamber 20 can be defined according to the size of the protrusion 230.

[0085] In this embodiment, the upper surface 231 of the protrusion 230 can be positioned at the same level as the upper surface 200a of the front panel 200 and continuously connected to the upper surface 200a. Accordingly, a fold line FL can be provided between the cutting line 234 and the upper surface 200a to be parallel to the center line C2. Furthermore, when the front joining line 200L joins to the rear joining line 100L on the upper surface 200a of the front panel 200, the upper end of the fold structure 201 can become a stitched portion S sewn together with the front panel 200 to the rear panel 100. Accordingly, when the protruding chamber 20 expands, the upper end of the protruding chamber 20 can be prevented from opening.

[0086] refer to Figure 6 and Figure 8 In the state of forming the folded structure 201, the cavity reinforcement patch 240 that seals the cut line 234 can be attached to the front panel 200 on the surface facing the interior space (e.g., the rear surface) and the opposite surface (e.g., the front surface).

[0087] Each of the chamber reinforcement patches 240 can be configured to cover the cut line 234, such that one end portion can become a stitched portion S and the other end portion can become a stitched portion S1, which is stitched to the edge of the outer surface 233 and the edge of the side surface 200b of the protrusion 230, and the stitched portion S1 is stitched to the front panel 200 at the inner end of the cut line 234. In this case, one end portion of the chamber reinforcement patch 240 can become the final stitched portion S stitched to the rear panel 100 together with the seam protector 300.

[0088] Furthermore, the upper and lower portions of the chamber reinforcement patch 240 can be stitched to the front panel 200 along a cut line 234 between the upper and lower portions of the chamber reinforcement patch 240. In this case, the lower end of the folded structure 201 can be stitched to the chamber reinforcement patch 240 in the folded state.

[0089] As described above, since the chamber reinforcement patch 240 is configured to cover the cut line 234 on both surfaces of the front panel 200 and to be stitched to surround the cut line 234 in order to seal the stitched portion S1 of the cut line 234, the lower end of the protruding chamber 20 can be prevented from opening together with the cut line 234 when the protruding chamber 20 expands.

[0090] refer to Figure 6 and Figure 7 The chamber band 250 can be attached to the surface of the front panel 200 facing the interior space R in a horizontal direction perpendicular to the center line C2. The chamber band 250 supports the opening 21 of the protruding chamber 20 facing the interior space R of the front panel 200 so as to maintain the shape of the opening 21 when the protruding chamber 20 is in an expanded state.

[0091] One end portion of the chamber band 250 can be a stitched portion S sewn to the edge of the outer surface 233 of the protrusion 230, and the other end portion can be a stitched portion S2 sewn to the central portion of the front panel 200, and is configured to span the fold structure 201. In this case, one end portion of the chamber band 250 can be a final stitched portion S sewn together with the seam protector 300 to the edge of the outer surface 233 of the protrusion 230 onto the rear panel 100.

[0092] As described above, the protruding chamber 20 can be integrally provided with the front panel 200 of the airbag cushion 1 according to an embodiment of the present invention. The protruding chamber 20 expands together with the main body 10 and protrudes towards the passenger portion in front of the protruding chamber 20. In particular, since the protruding chamber 20 is provided with a folding structure 201 when a portion of the front panel 200 is folded, a portion of the front panel 200 forms the protruding chamber 20, and the folding structure 201 expands when unfolded as the main body 10 expands.

[0093] Referring to the accompanying drawings, the front tether 260 can be configured to be attached to the interior space R of the main body 10.

[0094] One end of the front tether 260 can be attached to the central portion of the surface of the front panel 200 facing the interior space, and the other end can be attached to the rear panel 100. In this case, one end of the front tether 260 can become a stitched portion S3, which is stitched to the chamber band 250 and ultimately stitched together with the chamber band 250 to the front panel 200. Furthermore, the chamber band 250 can be used to reinforce the attachment of the front tether 260. The other end of the front tether 260 can be substantially stitched to the second rear central portion 121 of the rear panel 100 (see...). Figure 2 and Figure 3 ).

[0095] The front tether 260, which is connected to the front panel 200 and the rear panel 100, can control the amount of forward impact of the airbag cushion 1 by generating tension in the opposite direction to that of the passenger in the forward direction in the passenger seat when the body 10 of the airbag cushion 1 inflates, and accordingly pulls the front panel 200.

[0096] Figure 9 and Figure 10 This is a schematic diagram illustrating a modified example of the front panel 200'.

[0097] Referring to the accompanying drawings, the front panel 200' may include a protrusion 230 that partially protrudes outward from the left surface 200b and the right surface 200b based on the centerline C2 along the longitudinal direction.

[0098] In other words, the invention differs in that it features two folding structures 201, wherein the protrusions 230 are disposed on two side surfaces and folded along the fold line FL, which is different from... Figure 5 The illustrated embodiment, in Figure 5 In the illustrated embodiment, the folding structure 201 is configured as a single folding structure 201, wherein the protrusion 230 is formed only on one side surface 200b to form a protruding chamber 20.

[0099] The cutting line 234 that cuts inward toward the center line C2 can be formed so that it faces each other at the portion of the lower end surface 232 of the protrusion 230 that protrudes outward from the side surface.

[0100] With the outer surface 233 of the protrusion 230 configured to match the side surface 200b of the front panel 200' such that the front bonding line 200L is continuously connected to the side surface 200b and extends along the side surface 200b, a folding structure 201 that folds parallel to the center line C2 to form the protruding chamber 20 can be formed on the cutting line 234.

[0101] Furthermore, the cavity reinforcement patch 240 that seals the cut line 234 while the folded structure 201 is formed can be attached to the front panel 200'. Additionally, a cavity strip 250 can be attached to the front panel 200', which supports the opening of the protruding cavity 20 facing the internal space R so as to maintain the shape of the opening when the protruding cavity 20 is expanded.

[0102] In the chamber band 250, one end portion can be a stitched portion S sewn to the edge of the outer surface 233 of the protrusion 230 on one side, the other end portion can be a stitched portion S sewn to the edge of the outer surface 233 of the protrusion 230 on the other side, and the central portion can be sewn to the central portion of the front panel 200' so as to be integrally disposed across a pair of folding structures 201.

[0103] Figure 11 This is a schematic diagram illustrating a front panel 200 according to another embodiment.

[0104] Referring to the accompanying drawings, the front panel 200” may include a protrusion 230' that partially protrudes outward from at least one of the side surfaces 200b of the left and right surfaces based on the centerline C2 in the longitudinal direction.

[0105] The protrusion 230' may include an upper end surface 231, a lower end surface 232, and an outer surface 233 connecting one end of the upper end surface 231 and one end of the lower end surface 232. In addition, a cutting line 234 that cuts inward toward the center line C2 may be formed at the portion of the lower end surface 232 that protrudes outward from a side surface 200b.

[0106] Furthermore, the upper surface 231 of the protrusion 230' can be positioned at a different level from the upper surface 200a of the front panel 200", so as to be stepped relative to the upper surface 200a. In addition, in the front panel 200", a cutting line 234 that cuts inward toward the center line C2 can be formed at the portion of the upper surface 231 that protrudes outward from a side surface 200b, and the upper surface 231 can be continuously connected to the cutting line 234.

[0107] In other words, the difference in this embodiment is that the upper surface 231 of the protrusion 230' is set in a stepped shape relative to the upper surface 200a of the front panel 200', which is different from... Figure 5 The embodiments illustrated herein, in Figure 5 In the embodiment illustrated, the upper surface 231 of the protrusion 230 is positioned at the same level as the upper surface 200a of the front panel 200, so as to be continuously connected to the upper surface 200a. Furthermore, a difference is that a cutting line 234 is additionally formed connecting to the upper surface 231 of the protrusion 230'.

[0108] With the outer surface 233 of the protrusion 230' configured to match a side surface 200b of the front panel 200", such that the front bonding line 200L is continuously connected to and extends along the side surface 200b, a folding structure 201 can be formed on the cutting line 234. This folding structure 201 is folded along a folding line FL parallel to the center line C2 to form a protruding chamber 20. The folding line FL can be positioned between the cutting line 234 connecting to the lower end surface 232 of the protrusion 230' and the cutting line 234 connecting to the upper end surface 231 of the protrusion 230', parallel to the center line C2.

[0109] As shown in the attached drawings, in the state of forming the folded structure 201, the cavity reinforcement patch 240 of the sealing cut line 234 can be attached to the surface of the front panel 200” facing the interior space R and the opposite surface.

[0110] Each of the chamber reinforcement patches 240 can be configured to cover the cut line 234, with one end portion of the chamber reinforcement patch 240 serving as a stitched portion S to the edge of the outer surface 233 and the edge of the side surface 200b of the protrusion 230', and the other end portion serving as a stitched portion S1 to the front panel 200' at the inner end of the cut line 234. In this case, this one end portion of the chamber reinforcement patch 240 can be finally stitched to the rear panel 100 together with the seam protector 300.

[0111] Furthermore, each of the upper and lower portions of the chamber reinforcement patch 240 can be a stitched portion S1 sewn to the front panel 200” along a cut line 234 between the upper and lower portions. In this case, each of the lower and upper ends of the folded structure 201 can be sewn to the chamber reinforcement patch 240 in the folded state.

[0112] As described above, since the chamber reinforcement patch 240 is configured to cover the cut line 234 on both surfaces of the front panel 200” and to be stitched to surround the cut line 234 in order to seal the stitched portion S1 of the cut line 234, the upper and lower ends of the protruding chamber 20 can be prevented from opening together with the cut line 234 when the protruding chamber 20 expands.

[0113] In addition, a chamber strip 250 may be provided on the surface of the front panel 200” facing the interior space R. The chamber strip 250 supports the opening of the protruding chamber 20 facing the interior space R so as to maintain the shape of the opening when the protruding chamber 20 is in an expanded state.

[0114] In this embodiment, an example of a protrusion 230' that is configured to partially protrude outward from one side surface 200b of the front panel 200" is described, but the invention is not limited thereto. For example, the protrusion 230' may also be provided on each of the two side surfaces 200b of the front panel 200".

[0115] Figure 12 This is a set of schematic diagrams illustrating a modified example of the front panel 200”'.

[0116] Referring to the accompanying drawings, the front panel 200”' may include a protrusion 230”' that partially protrudes outward from at least one of the side surfaces 200b of the left surface 200b and the right surface 200b based on the centerline C2 in the longitudinal direction.

[0117] The protrusion 230 may include an upper surface 231, a lower surface 232, and an outer surface 233 connecting one end of the upper surface 231 and one end of the lower surface 232. In addition, a cutting line 234 that cuts inward toward the center line C2 may be formed at the portion of the lower surface 232 that protrudes outward from a side surface 200b.

[0118] Furthermore, the upper surface 231 of the protrusion 230” can be positioned at a different level from the upper surface 200a of the front panel 200”, so as to be stepped relative to the upper surface 200a. In addition, a cutting line 234 that cuts inward toward the center line C2 can be formed at the portion of the upper surface 231 of the front panel 200”’ that protrudes outward from a side surface 200b, and the upper surface 231 can be continuously connected to the cutting line 234.

[0119] Figure 12 The embodiment shown in Figure A differs in that the upper surface 231 extends to protrude a greater length than the lower surface 232, which is different from... Figure 11 The illustrated embodiment, in Figure 11In the illustrated embodiment, the upper end surface 231 and lower end surface 232 of the protrusion 230' extend to protrude the same length. Furthermore, Figure 12 The embodiment shown in Figure B differs in that the length of the lower end surface 232 is greater than the length of the upper end surface 231, causing the lower end surface 232 to protrude.

[0120] In this asymmetrical structure, when the protruding chamber 20 expands, the asymmetrical protrusion of the protruding chamber 20, for example, the upper side protrudes further than the lower side, can effectively prevent the passenger's head from rotating.

[0121] Figure 13 and Figure 14 This is a schematic diagram illustrating a front panel 230” according to yet another embodiment.

[0122] Referring to the accompanying drawings, the front panel 200”” may include a protrusion 230”’ that partially protrudes outward from at least one of the side surfaces 200b of the left and right surfaces based on the centerline C2 along the longitudinal direction.

[0123] The protrusion 230”' may include an upper surface 231, a lower surface 232, and an outer surface 233 connecting one end of the upper surface 231 and one end of the lower surface 232. The upper surface 231 of the protrusion 230”' may be positioned at the same level as the upper surface 200a of the front panel 200””, so as to be continuously connected to the upper surface 200a.

[0124] The difference in this embodiment is that no cutting line is formed, which is different from... Figure 5 The illustrated embodiment, in Figure 5 In the illustrated embodiment, a cutting line 234 is formed on the lower end surface 232 of the protrusion 230, protruding outward from a side surface 200b, cutting inward toward the centerline C2. Accordingly, the cutting process for forming the cutting line 234 and other procedures can be omitted. Figure 5 The process of attaching a cavity reinforcement patch 240 to seal the cutting line 234.

[0125] With the outer surface 233 of the protrusion 230”' configured to match a side surface 200b of the front panel 200”' such that the front bonding line 200L is continuously connected to and extends along the side surface 200b, a folding structure 201 can be formed on the protrusion 230”'. This folding structure 201 is folded along a folding line FL parallel to the center line C2 to form a protruding chamber 20. The folding line FL can be provided between the lower end surface 232 and the upper end surface 231 of the protrusion 230”', parallel to the center line C2.

[0126] The upper and lower ends of the folding structure 201 can be stitched together with the seam protector 300 to the rear panel 100 on the upper surface 200a and side surface 200b of the front panel 200””.

[0127] In addition, the chamber band 250 can be attached to the surface of the front panel 200” facing the interior space R. The chamber band 250 supports the opening of the protruding chamber 20 facing the interior space R so as to maintain the shape of the opening when the protruding chamber 20 is in an expanded state.

[0128] According to an embodiment, the present invention can provide an airbag cushion that can protect passengers by effectively restraining the rotational movement of the passenger's head.

[0129] The effects of the present invention are not limited to those described above, and other effects not described above will be clearly understood by those skilled in the art through the appended claims.

[0130] Although the invention has been described above with reference to exemplary embodiments, those skilled in the art will understand that various modifications and variations can be made to the invention without departing from the spirit and scope of the invention as defined by the appended claims. Furthermore, it should be understood that differences relating to modifications and variations fall within the scope of the invention as defined by the appended claims.

Claims

1. An airbag cushion, comprising: The body includes a rear panel having a rear joint line and a front panel having a front joint line joined to the rear joint line, and the front panel is configured to face the passenger when it expands by gas introduced into an internal space formed between the front panel and the rear panel. and A protruding chamber adapted to expand and protrude from the front panel toward the passenger; The protruding chamber is provided with a folding structure when a portion of the front panel is folded, and As the main body expands through the gas introduced into the internal space, the folded structure unfolds and expands; in: The front panel includes a protrusion that partially projects from at least one of the left and right side surfaces based on a centerline along the longitudinal direction; The protrusion includes an upper end surface, a lower end surface, and an outer surface connecting one end of the upper end surface and one end of the lower end surface; A cutting line is formed on the lower end surface at the portion protruding outward from one of the side surfaces, cutting inward toward the centerline; and When the outer surface is configured to match the one side surface such that the front bonding line connects to and extends along the one side surface, the folded structure is formed on the cutting line, the folded structure being folded parallel to the center line to form the protruding chamber.

2. The airbag cushion according to claim 1, wherein: A chamber strip is attached to the surface of the front panel facing the interior space, and the chamber strip supports an opening facing the interior space so as to maintain the shape of the opening when the protruding chamber expands; as well as One end portion of the chamber band is sewn to the edge of the outer surface of the protrusion, and the other end portion is sewn to the central portion of the front panel, such that the chamber band is configured to span the folded structure.

3. The airbag cushion of claim 2 further includes a front tether, one end of which is connected to the central portion of the front panel and the other end of which is connected to the rear panel.

4. The airbag cushion according to claim 1, wherein: A chamber reinforcement patch is attached to the front panel's surface facing the interior space and the opposite surface, and the chamber reinforcement patch seals the cut line when the folded structure is formed. Each of the chamber reinforcement patches is configured to cover the cut line; One end portion of the chamber reinforcement patch is sewn to the edge of the outer surface of the protrusion and the edge of the side surface; The other end portion of the chamber reinforcement patch is sewn to the front panel at the inner end of the cut line; and The upper and lower portions of the chamber reinforcement patch are stitched to the front panel along the cut line between the upper and lower portions.

5. The airbag cushion according to claim 1, comprising a seam protector, the seam protector being located between the edges of the rear panel and the front panel and integrally stitched to the rear panel and the front panel; in, The seam protector strengthens the portion where the rear panel and the front panel are sewn together.

6. The airbag cushion according to claim 1, wherein, The upper surface of the protrusion is positioned at the same level as the upper surface of the front panel so as to be continuously connected to the upper surface.

7. The airbag cushion according to claim 1, wherein, The upper surface of the protrusion is positioned at a different level from the upper surface of the front panel, so as to be stepped relative to the upper surface.

8. The airbag cushion according to claim 7, wherein: At the portion of the upper surface that protrudes outward from the one side surface, a cutting line is formed in the front panel that cuts inward toward the center line; as well as The upper surface is connected to the cutting line.

9. The airbag cushion according to claim 1, wherein: The front bonding line includes a first front bonding line disposed in the upper portion of the front panel and a second front bonding line disposed in the lower portion of the front panel; and The rear bonding line includes a first rear bonding line bonded to the first front bonding line, a second rear bonding line bonded to the second front bonding line, and a third rear bonding line disposed between the first rear bonding line and the second rear bonding line and including a first bonding portion and a second bonding portion bonded to each other.

10. The airbag cushion according to claim 9, wherein: The first front bonding line includes a first front central portion and a first front side portion, the first front central portion forming the upper surface of the front panel, and the first front side portion extending downward from both ends of the first front central portion and forming the side surface of the front panel. as well as The second front bonding line includes a second front side portion and a second front central portion. The second front side portion has a width smaller than that of the first front side portion and extends downward from the first front side portion to form the side surface of the front panel. The second front central portion connects to the lower end of the second front side portion to form the lower surface of the front panel.

11. The airbag cushion according to claim 10, wherein: The first rear bonding line includes a first rear central portion and a first rear side portion, the first rear central portion is bonded to the first front central portion, a first end of the first rear side portion is connected to the first rear central portion, and the other end of the first rear side portion is connected to the first bonding portion, and the first rear side portion is bonded to the first front side portion. as well as The second rear bonding line includes a second rear central portion and a second rear side portion, the second rear central portion is bonded to the second front central portion, a first end of the second rear side portion is connected to the second rear central portion, and the other end of the second rear side portion is connected to the second bonding portion, and the second rear side portion is bonded to the second front side portion.

12. The airbag cushion according to claim 11, wherein: The rear panel includes a first panel and a second panel. The first panel has a first rear joint line, a first joint portion, and a first joint area disposed below the first joint portion. The second panel has a second rear joint line, a second joint portion, and a second joint area disposed below the second joint portion. A first entry point is formed between the first bonding portion and the first bonding area in the first panel; A second entrance is formed between the second joining portion and the second joining area in the second panel; The first panel and the second panel are configured to overlap when the second panel is flipped so that the second joining area faces upward to connect the first inlet and the second inlet; as well as The first panel and the second panel are connected to each other in the first bonding area and the second bonding area.

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