Curtain airbag device

Abstract

The invention provides a curtain airbag device. The curtain airbag apparatus includes: an airbag cushion including first, second, and third main chambers disposed in first, second, and third row regions, respectively, in a vehicle; and a diffuser coupled to the airbag cushion to distribute gas directed toward the first main chamber, the second main chamber, and the third main chamber. The airbag cushion also includes an additional chamber disposed between the second main chamber and the third main chamber to assist in increasing the deployment speed of the third main chamber. A curtain airbag apparatus is mounted between pillar garnishes in a vehicle.

Description

Technical Field

[0001] The present invention relates to a curtain airbag device. Background Art

[0002] Vehicles are typically equipped with various types of airbags to protect passengers in the event of an accident. Among them, curtain airbags, mounted atop multiple pillars along the sides of the front and rear doors, deploy to shield passengers in the event of a rollover or side collision, with the airbag cushion deploying downward. Curtain airbags may include an airbag cushion that deploys within the passenger compartment and an inflator that generates and releases gas into the cushion.

[0003] The airbag cushion is extended in a rectangular shape along the length direction of the vehicle (from the passenger compartment toward the engine compartment, or vice versa) and is fully inflated with gas from an inflator to cover the entire side of the passenger compartment.

[0004] Recently, the length of airbag cushions has increased due to the increase in vehicle size. For example, a vehicle designed to accommodate multiple passengers (e.g., six or more seats) may have a first row area for the driver and front passenger, followed by a second row area, and possibly a third row area behind them. Therefore, the airbag cushion has a length sufficient to cover the sides of the third row area.

[0005] The vehicle also has trim covering the pillars that form the vehicle frame. The trim may include a front pillar trim for the first row area, a center pillar trim for the second row area, and a rear pillar trim for the third row area. These trims have a shape that protrudes toward the interior of the passenger compartment along the width direction, intersecting with the length direction (from the driver's seat toward the front passenger seat, or vice versa).

[0006] These decorative parts may hinder the deployment of the airbag cushion. For example, an airbag cushion is equipped with first, second, and third chamber components to cover the first, second, and third row areas of the vehicle, respectively, arranged sequentially along the length direction (from the engine compartment toward the passenger compartment). Traditionally, airbag cushions do not have a unique structure that separates the second and third chambers. To store the airbag cushion in the vehicle, the third chamber is folded toward the second chamber and then rolled up during folding.

[0007] Therefore, in the conventional airbag cushion structure described above, when it is deployed by rolling out, the third chamber deploys more slowly than the first and second chambers. As a result, when the third chamber contacts the rear pillar garnish, the third chamber, which begins to deploy later than the other chambers, cannot properly achieve the shape required to protect passengers sitting in the third row area.

[0008] Therefore, there is a growing need for research into preventing delayed deployment of the airbag cushion, ensuring rapid formation of shape to protect passengers seated in the third row area. Summary of the Invention

[0009] This Summary is provided to introduce some concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

[0010] The present invention is proposed to solve the above problems, and an object of the present invention is to provide an improved curtain airbag device that can ensure that the airbag cushion is quickly formed into a shape without delay during the deployment process, thereby protecting passengers sitting in the third row area.

[0011] In one general aspect of the present disclosure, a curtain airbag apparatus for a vehicle is provided, the curtain airbag apparatus comprising: an airbag cushion including a first main chamber, a second main chamber, and a third main chamber respectively arranged in a first row area, a second row area, and a third row area in the vehicle; and a diffuser coupled to the airbag cushion and configured to distribute gas directed toward the first main chamber, the second main chamber, and the third main chamber, wherein the airbag cushion further comprises an additional chamber arranged between the second main chamber and the third main chamber and configured to assist in increasing a deployment speed of the third main chamber, and wherein the curtain airbag apparatus is configured to be mounted between a plurality of pillar trims in the vehicle.

[0012] The airbag cushion may further include a partition located between the first main chamber, the second main chamber, and the third main chamber, and the partition may include: a first partition located in the first main chamber; a second partition located between the first main chamber and the second main chamber; and a third partition separating the third main chamber and the additional chamber.

[0013] The additional chamber may be arranged closer to the second main chamber than to the third main chamber.

[0014] The third main chamber may include: a first inflatable portion configured to be inflated by gas distributed through the diffuser during deployment of the airbag cushion; and a second inflatable portion connected to the first inflatable portion and configured to be inflated by gas flowing into the first inflatable portion.

[0015] The second inflatable portion may be configured to remain in a folded state within the first inflatable portion prior to deployment of the airbag cushion.

[0016] The folded second inflatable portion may be configured to unfold in a direction from the second main chamber toward the third main chamber by being pushed by the gas distributed through the diffuser.

[0017] In the deployed state, a lower end of the additional chamber may be positioned lower than a lower end of the third main chamber.

[0018] In another general aspect of the present disclosure, a curtain airbag apparatus for a vehicle is provided, the curtain airbag apparatus comprising: an airbag cushion comprising a first main chamber, a second main chamber, and a third main chamber, respectively arranged in a first row area, a second row area, and a third row area of ​​the vehicle; and a diffuser coupled to the airbag cushion and configured to distribute gas directed toward the first main chamber, the second main chamber, and the third main chamber, wherein the third main chamber of the airbag cushion comprises: a first inflatable portion, the first inflatable portion configured to be inflated by gas distributed through the diffuser during deployment of the airbag cushion; and a second inflatable portion, the second inflatable portion configured to: remain in a folded state within the first inflatable portion before deployment of the airbag cushion; and to be inflated by gas flowing into the first inflatable portion during deployment of the airbag cushion, and wherein the curtain airbag apparatus is configured to be installed between a plurality of pillar trims in the vehicle.

[0019] The folded second inflatable portion may be configured to unfold in a direction from the second main chamber toward the third main chamber by being pushed by the gas distributed through the diffuser.

[0020] The airbag cushion may further include an additional chamber disposed between the second main chamber and the third main chamber, and the additional chamber may be configured to assist rapid deployment of the third main chamber.

[0021] In yet another general aspect of the present disclosure, a curtain airbag apparatus for a vehicle is provided, the vehicle including seats arranged in a first row area, a second row area, and a third row area, the curtain airbag apparatus comprising: an airbag cushion including a first main chamber, a second main chamber, and a third main chamber, the first main chamber, the second main chamber, and the third main chamber being configured to deploy in the first row area, the second row area, and the third row area, respectively; an additional chamber communicating with the second main chamber and the third main chamber; and a diffuser coupled to the airbag cushion and configured to deploy the airbag cushion by distributing gas directly into the first main chamber and the second main chamber, wherein the third main chamber and the additional chamber are configured to receive gas from the diffuser via the second main chamber, and wherein the additional chamber is configured to increase a deployment speed of the third main chamber.

[0022] The airbag cushion may be configured to be installed between pillar garnishes in the vehicle.

[0023] The airbag cushion may further include: a first partition located in the first main chamber; a second partition located between the first main chamber and the second main chamber; a third partition separating the third main chamber and the additional chamber; and a fourth partition communicating with the second main chamber and the additional chamber.

[0024] The additional chamber may be arranged to be positioned below the second main chamber.

[0025] When the airbag cushion is deployed, a lower end of the additional chamber may be positioned lower than a lower end of the third main chamber.

[0026] The third main chamber may include: a first inflatable portion configured to be inflated by gas distributed through the diffuser during deployment of the airbag cushion; and a second inflatable portion connected to the first inflatable portion and configured to be inflated by gas flowing into the first inflatable portion.

[0027] The second inflatable portion may be configured to remain in a folded state within the first inflatable portion prior to deployment of the airbag cushion.

[0028] The folded second inflatable portion may be configured to be expanded in a direction from the second main chamber toward the third main chamber by the gas distributed through the diffuser. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a diagram showing a curtain airbag apparatus according to an embodiment of the present invention;

[0030] Figure 2 is a diagram showing a folded configuration of the second inflatable portion of the third main chamber; and

[0031] Figure 3 It is along Figure 2 A cross-sectional view taken along line AA in FIG.

[0032] Description of Reference Numerals

[0033] 1: Curtain airbag device 100: Airbag cushion

[0034] 120: Joint 140: Partition

[0035] 141: First partition 142: Second partition

[0036] 143: Third partition 144: Fourth partition

[0037] 160: Room 161: First Main Room

[0038] 162: Second main room 163: Third main room

[0039] 163a: First inflation section

[0040] 163b: Second inflation section

[0041] 164: Additional room 165: First auxiliary room

[0042] 166: Second auxiliary chamber 180: Connecting portion

[0043] 200: Diffuser 210: Support member

[0044] 220: First exit port

[0045] 230: Second exit port DETAILED DESCRIPTION

[0046] Although the present invention is susceptible to various modifications, for the sake of clarity, the following detailed description and the accompanying drawings focus on preferred embodiments. However, these embodiments are not intended to limit the present invention, and it should be understood that these embodiments include all modifications, equivalents and replacements within the spirit and scope of the present invention.

[0047] As used herein, terms including ordinal numbers such as "first" and "second" can be used to describe various components without limiting these components. These terms are only used to distinguish one component from another component. For example, without departing from the scope of the present invention, a first element can be referred to as a second element, and similarly, a second element can be referred to as a first element. The expression "and / or" is used to convey the possibility of including a combination of multiple related listed items or any one related listed item.

[0048] It should be understood that when a component is referred to as being “connected to” or “coupled to” another component, it can be directly connected to or coupled to the other component, or intervening components may be present. In contrast, when a component is referred to as being “directly connected to” or “directly coupled to” another component, there are no intervening components.

[0049] In the description of the embodiments, when a component is described as being formed or placed "on or under" another component, "on (above)" or "under (below)" may include not only a case where the two components are in direct contact with each other, but also a case where one or more other components are formed or positioned between the two components. In addition, when expressed as "on (above) or under (below)", it may include not only an upward direction relative to a single component, but also a downward direction.

[0050] The terms used in this application are only used to describe specific embodiments and are not intended to limit the scope of the present invention. Singular forms also include plural forms, unless the context clearly indicates otherwise. In this application, terms such as "including" or "having" represent the presence of features, numbers, steps, operations, components or parts listed in the specification, without excluding the presence or possibility of one or more other features, numbers, steps, operations, components or parts or their combinations.

[0051] Unless otherwise defined herein, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by those skilled in the art to which the present invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and should not be interpreted as an idealized or overly formal meaning unless explicitly defined as such herein.

[0052] Hereinafter, a curtain airbag apparatus will be described with reference to the accompanying drawings, wherein the same or corresponding components are given the same reference numerals and redundant descriptions are omitted.

[0053] Figure 1 2 is a diagram illustrating a curtain airbag apparatus according to an embodiment of the present invention.

[0054] In this embodiment, the term "lengthwise direction" refers to a direction from a passenger compartment (not shown) to an engine compartment (not shown), or vice versa.

[0055] See also Figure 1 , a curtain airbag apparatus 1 according to an embodiment of the present invention may include an airbag cushion 100 and a diffuser 200. In addition, the curtain airbag apparatus 1 may further include an inflator (not shown) that generates gas inside and discharges the gas into the interior of the airbag cushion 100. The curtain airbag apparatus 1 may be provided between a plurality of pillar garnishes (not shown) installed in a vehicle.

[0056] The airbag cushion 100 is formed by combining two elastic materials. It can be placed along the length of the vehicle between a front pillar trim (not shown) in the first row area, where the driver's seat and front passenger seat are located, and a rear pillar trim (not shown) in the third row area, behind the driver's seat and front passenger seat. The airbag cushion 100 can be deployed to cover the side windows of the vehicle. Furthermore, the airbag cushion 100 can be rolled and folded in a direction intersecting the lengthwise direction (the height direction). Thus, the airbag cushion 100 can be deployed by rolling it in the height direction toward the passenger compartment floor.

[0057] Thus, the airbag cushion 100 is located between the front pillar garnish and the rear pillar garnish and can be deployed to cover the center pillar garnish (not shown) in the second row area between the first row area and the third row area. The airbag cushion 100 may include a joint 120, a partition 140, a chamber 160, and a coupling portion 180.

[0058] The joint 120 is a portion formed in the edge region of the airbag cushion 100 where the edges of the two materials forming the airbag cushion 100 can be joined together. The joint 120 is a non-operating portion of the airbag cushion 100, meaning it is not inflated by the gas generated by the inflator. Therefore, the area inside the joint 120 in the airbag cushion 100 can be inflated by the gas generated by the inflator.

[0059] The partitions 140 can be located between the first, second, and third main chambers 161, 162, and 163, as described later. Like the joint 120, the partitions 140 are non-operating portions of the airbag cushion 100 where two materials are joined together. They are non-inflatable portions of the airbag cushion 100, meaning they are not inflated by the gas generated by the inflator. When the airbag cushion 100 is inflated, the partitions 140 become one of the elements that form the shapes of the first, second, and third main chambers 161, 162, and 163. The partitions 140 may include a first partition 141, a second partition 142, a third partition 143, and a fourth partition 144.

[0060] The first partition 141 may be positioned in the first main chamber 161 to be described later. The first partition 141 may assist in rapid deployment of the first main chamber 161.

[0061] The second partition plate 142 may be located between the first main chamber 161 and the second main chamber 162, which will be described later. The second partition plate 142 may also be arranged in the first sub-chamber 165, which will be described later. The second partition plate 142 may be located between the first main chamber 161 and the third main chamber 163. The second partition plate 142 may facilitate rapid expansion of the first and second main chambers 161, 162 and may be one of the factors that determine the shape of the first sub-chamber 165, which will be described later. The second partition plate 142 may also support the diffuser 200.

[0062] The third partition plate 143 may be positioned between the third main chamber 163 and the additional chamber 164, which will be described later. The third partition plate 143 may separate the third main chamber 163 and the additional chamber 164. That is, the third partition plate 143 may serve as one of the elements that shape the third main chamber 163 and the additional chamber 164.

[0063] The fourth partition plate 144 may be located between the second partition plate 142 and the third partition plate 143, which will be described later. The fourth partition plate 144, together with the third partition plate 143, may be one of the factors that determine the shape of the additional chamber 164, which will be described later. The fourth partition plate 144 may be formed along a portion of the joint 120.

[0064] Chamber 160 is the portion of the airbag cushion excluding joint 120, partition 140, and coupling 180. Chamber 160 is inflated by gas generated by the inflator. Chamber 160 may include a first main chamber 161, a second main chamber 162, and a third main chamber 163, respectively arranged in the first, second, and third row areas of the vehicle (passenger compartment).

[0065] The first main chamber 161 may be disposed between the first partition plate 141 and the second partition plate 142. The first main chamber 161 may come into contact with a passenger seated in a seat located in the first row area, thereby helping to suppress movement of the passenger.

[0066] Second main chamber 162 may be disposed between first main chamber 161 and third main chamber 163. Thus, second main chamber 162 may contact a passenger seated in a second-row seat, thereby helping to suppress the passenger's movement. Second main chamber 162 may be disposed between second partition 142 and fourth partition 144.

[0067] The third main chamber 163 may be arranged longitudinally toward the rear of the fourth partition 144 of the partition 140. The third main chamber 163 may contact a passenger seated in a third-row seat, thereby helping to suppress the passenger's movement. When the airbag cushion 100 is deployed, the third main chamber 163 may cover a portion of the rear pillar garnish.

[0068] The chamber 160 may further include an additional chamber 164 , a first sub-chamber 165 , and a second sub-chamber 166 .

[0069] The additional chamber 164 may be disposed between the second main chamber 162 and the third main chamber 163. The additional chamber 164 may also be disposed closer to the second main chamber 162 than to the third main chamber 163.

[0070] The additional chamber 164 can assist in the rapid deployment of the third main chamber 163. Specifically, when the airbag cushion 100 deploys, the lower end of the additional chamber 164 can be positioned vertically lower than the lower end of the third main chamber 163. This shape of the additional chamber 164 allows it to be inflated and deployed by gas generated by the inflator in the airbag cushion 100. In this case, since the lower end of the additional chamber 164 is positioned vertically lower than the lower end of the third main chamber 163, the additional chamber 164 can vertically pull the airbag cushion 100 toward the floor of the passenger compartment. This phenomenon can facilitate the rapid deployment of the third main chamber 163.

[0071] In this way, the additional chamber 164 can assist in the rapid deployment of the third main chamber 163, ensuring uniform deployment of the long airbag cushion 100. This prevents the first, second, and third main chambers 161, 162, and 163 of the long airbag cushion 100 from having different impact absorption timings. In this manner, placing the additional chamber 164 longitudinally in front of the third main chamber 163 may be preferable to avoid hindering deployment of the third main chamber 163.

[0072] The first sub-chamber 165 may be disposed between the first main chamber 161 and the second main chamber 162. The first sub-chamber 165 may be disposed between the joint 120 and the second partition plate 142. The first sub-chamber 165 may connect the first main chamber 161 and the second main chamber 162. The diffuser 200 may be placed in the first sub-chamber 165. The first sub-chamber 165 may serve as a passage through which the gas distributed by the diffuser 200 passes. The gas passing through the first sub-chamber 165 may be guided to the first main chamber 161 and the second main chamber 162.

[0073] The second sub-chamber 166 may be disposed between the second main chamber 162 and the third main chamber 163. The second sub-chamber 166 may also be disposed between the second main chamber 162 and the additional chamber 164. The second sub-chamber 166 may be disposed between the joint 120 and the fourth partition plate 144. The second sub-chamber 166 may connect the second main chamber 162 and the third main chamber 163. The second sub-chamber 166 may connect the second main chamber 162 and the additional chamber 164.

[0074] The second sub-chamber 166 may be connected to the first sub-chamber 165. Therefore, the second sub-chamber 166 may serve as a passage for gas to pass through the diffuser 200. The gas moving through the second sub-chamber 166 may be guided to the third main chamber 163 and the additional chamber 164.

[0075] The coupling portion 180 may be formed on a portion of the joining portion 120. More specifically, the coupling portion 180 may be formed in a region of the joining portion 120 that faces the second partition plate 142. The coupling portion 180 may be formed by cutting a portion of the joining portion 120. The coupling portion 180 may form a space within the airbag cushion 100 that accommodates the diffuser 200 and the inflator.

[0076] The diffuser 200 may be coupled to the airbag cushion 100 and may distribute gas moving toward the first main chamber 161, the second main chamber 162, and the third main chamber 163 of the airbag cushion 100. The diffuser 200 may be disposed in the coupling portion 180 of the airbag cushion 100 and may include a support member 210 accommodating an inflator therein, and a first outlet port 220 and a second outlet port 230 connected to the support member 210 and disposed in the first sub-chamber 165 of the chamber 160 of the airbag cushion 100. Here, the first outlet port 220 may guide the movement of gas toward the first main chamber 161 of the airbag cushion 100, while the second outlet port 230 may guide the movement of gas toward the second main chamber 162 of the airbag cushion 100.

[0077] As described above, the curtain airbag apparatus 1 according to the embodiment of the present invention can cover the side surfaces and the first to third row areas of the vehicle, and absorb possible impacts on passengers.

[0078] Hereinafter, the third main chamber 163 of the airbag cushion 100 will be described in detail.

[0079] Figure 2 is a diagram showing a folded configuration of the second inflatable portion of the third main chamber, Figure 3 It is along Figure 2 A cross-sectional view taken along line AA in FIG.

[0080] See also Figures 1 to 3 , see more specifically Figure 2 and Figure 3 , the third main chamber 163 of the chamber 160 of the airbag cushion 100 may include a first inflation portion 163 a and a second inflation portion 163 b .

[0081] The first inflatable portion 163a may be a region adjacent to the third partition 143 of the partition 140 along the length direction within the third main chamber 163 of the airbag cushion 100. The first inflatable portion 163a may be connected to the second sub-chamber 166 of the airbag cushion 100. Therefore, during deployment of the airbag cushion 100, the first inflatable portion 163a may be inflated by gas distributed through the diffuser 200.

[0082] The second inflatable portion 163b may be located behind the first inflatable portion 163a in the length direction. The second inflatable portion 163b may be connected to the first inflatable portion 163a. ​​The second inflatable portion 163b may be inflated by gas flowing into the first inflatable portion 163a. ​​The second inflatable portion 163b may be located further outward than a portion of the joint portion 120 of the airbag cushion 100 in the length direction.

[0083] The third main chamber 163 constructed in this manner can be kept in a folded state in a predetermined portion before being unfolded. Figure 2 and Figure 3As shown, before the airbag cushion 100 is deployed, the second inflatable portion 163b can be maintained in a folded state within the first inflatable portion 163a. ​​In addition, the second inflatable portion 163b maintained in a folded state within the first inflatable portion 163a can be positioned along the same line as a portion of the joint 120 of the airbag cushion 100. As a result, the length of the folded airbag cushion 100 becomes shorter than the length of the deployed airbag cushion 100, thereby improving the ease of packaging and placement within the vehicle.

[0084] See also Figure 2 and Figure 3 Before the airbag cushion 100 is deployed, the second inflatable portion 163b can remain folded within the first inflatable portion 163a, and after the airbag cushion 100 is deployed, the second inflatable portion 163b can be inflated by gas flowing into the first inflatable portion 163a. ​​Specifically, the folded second inflatable portion 163b can be deployed in a direction from the second main chamber 162 toward the third main chamber 163 by being pushed by gas distributed via the diffuser 200.

[0085] More specifically, in the folded state, the second inflatable portion 163b, located within the first inflatable portion 163a, begins to be pushed outward in the longitudinal direction, toward the exterior of the first inflatable portion 163a, driven by gas passing through the second sub-chamber 166 of the airbag cushion 100. Simultaneously, the gas passing through the second sub-chamber 166 of the airbag cushion 100 moves toward the additional chamber 164, causing the airbag cushion 100 to deploy while simultaneously rolling vertically toward the passenger compartment floor. This deployment configuration of the airbag cushion 100 results in the third main chamber 163 of the airbag cushion 100 being positioned forward of the rear pillar garnish in a width direction intersecting the longitudinal direction (from the passenger seat toward the driver's seat, or vice versa) during deployment.

[0086] This configuration can prevent a situation in which a conventional airbag cushion having no second inflatable portion 163b folded within the first inflatable portion 163a may be obstructed by the side of the rear pillar garnish located in the third row area of ​​the vehicle, thereby causing deployment delay or failure when inflated by gas.

[0087] As described above, the curtain airbag apparatus 1 according to the embodiment of the present invention has a structure capable of preventing deployment delay over the entire area of ​​the airbag cushion 100, thereby preventing injury to passengers, particularly passengers sitting in the third row area, due to partial delayed deployment of the airbag cushion 100.

[0088] According to an embodiment of the present invention, by designing an airbag cushion to have an additional chamber located in front of a third main chamber and a structure in which the second inflatable portion of the third main chamber is folded inside the first inflatable portion, the curtain airbag apparatus is advantageous in preventing the third main chamber from contacting a rear pillar garnish and avoiding delay in deployment of the airbag cushion.

[0089] Although the foregoing description focuses on the specific embodiment of the present invention, it should be understood that, without departing from the spirit and scope of the present invention as defined in the appended claims, those skilled in the art may make various modifications and changes. In addition, any difference produced by these modifications and changes should be understood to fall within the scope of the present invention as described in the appended claims.

[0090] CROSS-REFERENCE TO RELATED APPLICATIONS

[0091] This application claims priority to Korean Patent Application No. 10-2024-0043220, filed on Mar. 29, 2024, which is hereby incorporated by reference in its entirety for all purposes.

Claims

1. A curtain airbag device for a vehicle, the curtain airbag device comprising: an airbag cushion including a first main chamber, a second main chamber, and a third main chamber respectively arranged in a first row area, a second row area, and a third row area of ​​the vehicle; as well as a diffuser coupled to the airbag cushion and configured to distribute gas directed toward the first, second, and third main chambers, Wherein, the airbag cushion further includes: an additional chamber disposed between the second main chamber and the third main chamber and configured to assist in increasing a deployment speed of the third main chamber, and The curtain airbag device is configured to be installed between a plurality of pillar trims in the vehicle.

2. The curtain airbag device according to claim 1, in, The airbag cushion further includes a partition located between the first main chamber, the second main chamber, and the third main chamber, and Wherein, the partition comprises: a first partition, the first partition being located in the first main chamber; a second partition plate located between the first main chamber and the second main chamber; and A third partition plate is provided to separate the third main chamber from the additional chamber.

3. The curtain airbag apparatus according to claim 2, wherein: The additional chamber is arranged closer to the second main chamber than to the third main chamber.

4. The curtain airbag apparatus according to claim 1, wherein: The third main chamber comprises: a first inflatable portion configured to be inflated by gas distributed through the diffuser during deployment of the airbag cushion; and A second inflatable portion is connected to the first inflatable portion and is configured to be inflated by gas flowing into the first inflatable portion.

5. The curtain airbag apparatus according to claim 4, wherein: The second inflatable portion is configured to remain in a folded state within the first inflatable portion prior to deployment of the airbag cushion.

6. The curtain airbag apparatus according to claim 5, wherein: The folded second inflatable portion is configured to unfold in a direction from the second main chamber toward the third main chamber by being pushed by the gas distributed through the diffuser.

7. The curtain airbag apparatus according to claim 2, wherein: In the deployed state, a lower end of the additional chamber is positioned lower than a lower end of the third main chamber.

8. A curtain airbag device for a vehicle, the curtain airbag device comprising: an airbag cushion including a first main chamber, a second main chamber, and a third main chamber respectively arranged in a first row area, a second row area, and a third row area of ​​the vehicle; as well as a diffuser coupled to the airbag cushion and configured to distribute gas directed toward the first, second, and third main chambers, Wherein, the third main chamber of the airbag cushion includes: a first inflatable portion configured to be inflated by gas distributed through the diffuser during deployment of the airbag cushion; and A second inflatable portion, wherein the second inflatable portion is configured to: Maintaining a folded state within the first inflatable portion before the airbag cushion is deployed; and The airbag cushion is inflated by gas flowing into the first inflatable portion during deployment of the airbag cushion, and The curtain airbag device is configured to be installed between a plurality of pillar trims in the vehicle.

9. The curtain airbag apparatus according to claim 8, wherein: The folded second inflatable portion is configured to unfold in a direction from the second main chamber toward the third main chamber by being pushed by the gas distributed through the diffuser.

10. The curtain airbag device according to claim 8, in, The airbag cushion further includes an additional chamber disposed between the second main chamber and the third main chamber, and Wherein, the additional chamber is configured to assist in the rapid expansion of the third main chamber.

11. A curtain airbag apparatus for a vehicle, the vehicle including seats arranged in a first row area, a second row area, and a third row area, the curtain airbag apparatus comprising: an airbag cushion comprising a first main chamber, a second main chamber, and a third main chamber, the first main chamber, the second main chamber, and the third main chamber being configured to deploy in the first row area, the second row area, and the third row area, respectively; an additional chamber, the additional chamber being in communication with the second main chamber and the third main chamber; as well as a diffuser coupled to the airbag cushion and configured to deploy the airbag cushion by distributing gas directly into the first and second main chambers, wherein the third main chamber and the additional chamber are configured to receive gas from the diffuser via the second main chamber, and Wherein, the additional chamber is configured to increase the deployment speed of the third main chamber.

12. The curtain airbag apparatus according to claim 11, wherein: The airbag cushion is configured to be installed between pillar garnishes in the vehicle.

13. The curtain airbag device according to claim 11, in, The airbag cushion further comprises: a first partition, the first partition being located in the first main chamber; a second partition plate, the second partition plate being located between the first main chamber and the second main chamber; a third partition plate that separates the third main chamber from the additional chamber; and A fourth partition plate is communicated with the second main chamber and the additional chamber.

14. The curtain airbag apparatus according to claim 13, wherein: The additional chamber is arranged to be positioned below the second main chamber.

15. The curtain airbag apparatus according to claim 14, wherein: When the airbag cushion is deployed, a lower end of the additional chamber is positioned lower than a lower end of the third main chamber.

16. The curtain airbag apparatus according to claim 11, wherein: The third main chamber comprises: a first inflatable portion configured to be inflated by gas distributed through the diffuser during deployment of the airbag cushion; and a second inflatable portion connected to the first inflatable portion and configured to be inflated by gas flowing into the first inflatable portion.

17. The curtain airbag apparatus according to claim 16, wherein: The second inflatable portion is configured to remain in a folded state within the first inflatable portion prior to deployment of the airbag cushion.

18. The curtain airbag apparatus according to claim 17, wherein: The folded second inflatable portion is configured to be expanded in a direction from the second main chamber toward the third main chamber by the gas distributed through the diffuser.

Images