KR20240001498A - Airbag cushion and side airbag device having the same - Google Patents

Abstract

An airbag cushion according to an embodiment of the present invention comprises: a main panel that forms a cushion main body that expands by gas and is deployed toward the front of a vehicle, and has a flow hole on one side; and a protruding panel that is provided on the one side of the main panel and is coupled along the circumference of the flow hole and forms a protruding chamber that protrudes toward a center console by the gas flowing in through the flow hole as the cushion main body expands, wherein the protruding panel has a folding structure folded along a folding line in the center, and the folding structure can be configured to expand and unfold toward the outside of the cushion main body as the cushion main body expands while the folding structure is arranged to face the inside of the cushion main body through the flow hole.

Description

Airbag cushion and side airbag device {AIRBAG CUSHION AND SIDE AIRBAG DEVICE HAVING THE SAME}

The present invention relates to an airbag cushion and a side airbag device, and more specifically, to an airbag cushion and a side airbag device installed on the side of a driver's seatback.

In general, when a car accident occurs, an airbag device protects the occupants by instantly ejecting gas in response to a signal from a collision sensor and rapidly inflating the deflated airbag cushion. There is a passenger airbag device installed, a curtain airbag device installed along the roof rail, and a side airbag device installed on the side of the seat.

Among these, the side airbag device is a device in which the airbag cushion expands and deploys forward from the side of the seatback to protect the side from the chest to the buttocks of the occupant.

However, in the side airbag device, the airbag cushion does not receive sufficient support from the center console located on the side of the seatback, causing a problem in which the airbag cushion falls toward the side seat. As a result, a problem arises in which passengers cannot be safely protected.

The present invention is intended to solve the above problems, and the problem to be solved by the present invention is to provide an airbag cushion and a side airbag device that allows the airbag cushion in the center console to receive sufficient support when the airbag cushion is deployed in the seatback. will be.

The object of the present invention is not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

The airbag cushion according to an embodiment of the present invention is expanded by gas and forms a cushion body that is deployed toward the front of the vehicle, and includes a main panel having a flow hole on one side; and a protruding panel provided on the one surface of the main panel, coupled along the periphery of the flow hole, and forming a protrusion chamber that protrudes toward the center console by the gas flowing in through the flow hole as the cushion body expands. ; It includes, wherein the protruding panel has a folding structure folded along a folding line at the center, and the cushion body expands while the folding structure is arranged to face the inside of the cushion body through the flow hole. The folding structure may be configured to unfold and expand outside the main body.

The main panel includes a rear panel facing the driver's seat and a front panel facing the center console disposed between the passenger seat and the driver's seat, and the flow hole is provided in the front panel, and the protruding panel is located on the outer surface of the front panel. can be combined

The main panel has a structure in which the rear panel and the front panel are left and right symmetrically connected based on a central fold line, and the rear panel and the front panel are overlapped along the fold line. It may be configured to form the cushion body by sewing along the edge and the edge of the front panel.

It further includes a diffuser pocket that accommodates an inflator and is disposed within the cushion body, one end of which is sewn and coupled to the main panel, and the diffuser pocket has a discharge hole through which gas generated from the inflator is discharged on a side facing the front panel. can be provided.

The discharge hole may be arranged to face the folding structure at a position that overlaps the flow hole.

The diffuser pocket may be configured to supply the gas into the cushion body through the other side end which is not sewn and has an open structure while the upper and lower ends are sewn.

A non-expansion area, which is an area that is not expanded, may be formed in the main panel.

The main panel may be provided with a tether that limits the expansion thickness of the cushion body.

A side airbag device according to an embodiment of the present invention includes an inflator that generates gas; and an airbag cushion that expands and deploys with the gas.

According to an embodiment of the present invention, an airbag cushion and a side airbag device can be provided in the center console to ensure that the airbag cushion receives sufficient support when the airbag cushion is deployed.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a diagram schematically showing a side airbag device according to an embodiment of the present invention.
Figure 2 is a diagram schematically showing an airbag cushion according to an embodiment of the present invention.
FIG. 3 is a diagram schematically showing a cross section along line II in FIG. 2.
FIG. 4 is a diagram schematically showing a state in which the cushion body and the protrusion chamber are inflated in the airbag cushion of FIG. 3.
FIG. 5 is a diagram schematically showing the main panel constituting the cushion body in the airbag cushion of FIG. 2.
FIG. 6 is a schematic view showing a protruding panel constituting a protruding chamber in the airbag cushion of FIG. 2;
Figure 7 is a diagram schematically showing a diffuser pocket in the airbag cushion of Figure 2.
Figure 8 is a diagram schematically showing a modified example of the diffuser pocket of Figure 7.
9 is a diagram schematically showing an airbag cushion with a tether.

Since the present invention can be subject to various changes and can have various embodiments, specific embodiments will be illustrated and described in the drawings. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention. Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, the second component may be referred to as the first component without departing from the scope of the present invention, and similarly, the first component may also be referred to as the second component. The term and/or includes any of a plurality of related stated items or a combination of a plurality of related stated items.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

In the description of the embodiment, in the case where one component is described as being formed “on or under” another component, (on or under) includes both components that are in direct contact with each other or one or more other components that are formed (indirectly) between the two components. Additionally, when expressed as 'on or under', it can include not only the upward direction but also the downward direction based on one component.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Hereinafter, embodiments will be described in detail with reference to the attached drawings, but identical or corresponding components will be assigned the same reference numbers regardless of reference numerals, and duplicate descriptions thereof will be omitted.

FIG. 1 is a diagram schematically showing a side airbag device according to an embodiment of the present invention, FIG. 2 is a diagram schematically showing an airbag cushion according to an embodiment of the present invention, and FIG. 3 is a cross-section taken along line I-I in FIG. 2. is a diagram schematically showing, and FIG. 4 is a diagram schematically showing a state in which the cushion body and the protrusion chamber are inflated in the airbag cushion of FIG. 3.

The side airbag device 1 according to an embodiment of the present invention is mounted on the side of the driver's seatback (SB) of a car to protect occupants in the event of a car crash. In this case, the side of the seatback (SB) on which the side airbag device 1 is mounted is located toward the passenger seat, and a center console (CC) or armrest may be located between the driver's seat and the passenger seat. And, the side airbag device 1 may be a center side airbag device.

Referring to the drawings, the side airbag device 1 according to an embodiment of the present invention may include an inflator 10 that generates gas, and an airbag cushion 20 that expands and deploys with the gas.

The inflator 10 may be configured to generate gas according to a signal from an airbag control unit (ACU), not shown, when a car crash occurs.

The inflator 10 may be formed in a round bar shape, and a gas generator and an ignition device may be installed inside. An injection port 11 for spraying gas may be provided at one end of the inflator 10.

The airbag cushion 20 is inflated by gas injected from the inflator 10, is deployed toward the front of the vehicle, and is placed between the occupant and the center console (CC) to protect the occupant's sides.

The airbag cushion 20 is inflated by gas and is provided on a main panel 100 that forms the cushion body 21 that is deployed toward the front of the vehicle, and is provided on one side of the main panel 100 to extend toward the center console (CC). It may include a protruding panel 200 that forms a protruding protruding chamber 22.

The main panel 100 may be provided with a flow hole 101 on one side, and the protruding panel 200 may be provided in a structure that communicates with the flow hole 101 on one side provided with the flow hole 101.

As shown in the drawing, the main panel 100 may include a rear panel 110 facing the driver's seat and a front panel 120 facing the center console (CC) disposed between the passenger seat and the driver's seat. In this case, the flow hole 101 may be provided in the front panel 120.

In this embodiment, the flow hole 101 is illustrated as being formed in a rectangular shape, but it is not limited to this, and the shape of the flow hole 101 may be modified in various ways to correspond to the shape of the protrusion chamber 22. Of course.

Figure 5 schematically shows the main panel 100 constituting the cushion body 21 of the airbag cushion 20.

Referring to the drawings, the main panel 100 may have a structure in which the rear panel 110 and the front panel 120 are symmetrically connected to each other with respect to the central fold line L1. Then, the cushion is folded along the fold line (L1) and sewn (S1) along the edge of the rear panel 110 and the edge of the front panel 120 in a state where the rear panel 110 and the front panel 120 are overlapped. It may be configured to form the main body 21.

In this embodiment, the rear panel 110 and the front panel 120 are provided as an integrally connected structure, but the present invention is not limited thereto. For example, the rear panel 110 and the front panel 120 may be cut and provided separately.

The protruding panel 200 may be provided on one side of the main panel 100 and coupled along the periphery of the flow hole 101. In an embodiment, the protruding panel 200 may be coupled to the outer surface of the front panel 120 where the edge of the protruding panel 200 is provided with the flow hole 101 by sewing (S2). Of course, it is also possible for the protruding panel 200 to be coupled to the inner side of the front panel 120.

The protruding panel 200 is configured to form a protruding chamber 22 that protrudes outward from the main panel 100 by the gas (G) flowing in through the flow hole 101 as the cushion body 21 expands. You can.

FIG. 6 schematically shows the protruding panel 200 constituting the protruding chamber 22 in the airbag cushion 20.

Referring to the drawing, the protruding panel 200 has a folding structure 210 folded along a folding line L2 in the center, and the folding structure 210 flows inside the cushion body 21 through the flow hole 101. As the cushion body 21 is expanded in a state in which it is arranged to face the cushion body 21, the folding structure 210 may unfold and expand to the outside of the cushion body 21 to form the protruding chamber 22.

In an embodiment, the protruding panel 200 is formed to be longer than the size of the flow hole 101, and the edge of the protruding panel 200 is disposed along the circumference of the flow hole 101, and then the protruding panel 200 The extra area 201 is folded in the center to form the folding structure 210. In this case, the size of the extra area 201 may be determined according to the length of the protrusion panel 200, and the protrusion length of the protrusion chamber 22 may be determined by the size of the extra area 201.

With the folding structure 210 formed, the protruding panel 200 may be coupled to the front panel 120 by sewing its edges around the flow hole 101.

Meanwhile, the position of the flow hole 101 may be determined by considering the position of the center console (CC) when the protrusion chamber 22 is deployed. That is, it is preferable that at least the lower part of the protrusion chamber 22 is provided in a position where it can be placed on the center console (CC) so that the protrusion chamber 22 can form a support structure with the center console (CC).

Figure 7 schematically shows the diffuser pocket 300 in the airbag cushion 20.

Referring to the drawings, the airbag cushion 20 may include a diffuser pocket 300 that accommodates the inflator 10.

The diffuser pocket 300 may be disposed within the cushion body 21 and one end thereof may be sewn (S3) and coupled to the main panel 100.

In an embodiment, one end of the diffuser pocket 300 may be joined along the fold line L1 at the center of the main panel 100.

The inflator 10 may be assembled by being inserted into the diffuser pocket 300 so that the injection hole 11 is located within the diffuser pocket 300.

The diffuser pocket 300 may be provided with a discharge hole 310 through which the gas (G) generated by the inflator 10 is discharged on the side facing the front panel 120 with the upper and lower ends sewn (S3). . That is, the gas (G) is configured to be discharged to the outside of the diffuser pocket 300 only through the discharge hole 310, and the gas (G) discharged through the discharge hole 310 is supplied to the internal space of the cushion body 21. This allows the cushion body 21 to expand.

In an embodiment, the discharge hole 310 may be arranged to face the folding structure 210 at a position that overlaps the flow hole 101.

The discharge hole 310 is arranged to face the flow hole 101 so that the gas (G) is discharged toward the folding structure 210 within the diffuser pocket 300 at the beginning of deployment, and thus the folding structure 210 It can be configured to quickly unfold to form the protrusion chamber 22, and to expand the cushion body 21 by spreading the gas G into the inner space of the cushion body 21.

Figure 8 schematically shows a modified example of the diffuser pocket 300'.

As shown in FIG. 8, the diffuser pocket 300' may have an opening 320 of an open structure in which the upper and lower ends are sewn (S3) and the other end facing forward is not sewn.

A portion of the gas (G) generated in the inflator 10 is discharged laterally through the discharge hole 310 within the diffuser pocket 300' and supplied to the flow hole 101, and the remainder is not sewn and is therefore open. It may be configured to be discharged through the opening 320 forming the structure and supplied directly into the cushion body 21.

That is, the gas (G) is configured to be discharged in two directions through the diffuser pocket 300', and by guiding some of the gas to the flow hole 101, the folding structure 210 is expanded to form the folding chamber 22. to form, and the remaining gas (G) can be guided directly into the cushion body 21 to expand the cushion body 21.

Meanwhile, as shown in the figure, a non-expansion area 102, which is an area that is not expanded, may be formed in the main panel 100.

The non-expandable area 102 may be formed by sewing and contacting the rear panel 110 and the front panel 120 that overlap each other. This non-expansion area 102 may be formed to be located at approximately the center of the main panel 100 at the top of the diffuser pocket 300.

Since the non-expansion area 102 does not expand when the cushion body 21 is expanded, the expansion thickness of the cushion body 21 may be limited. The location and shape of the non-expandable area 102 may vary depending on the shape and size of the cushion body 21.

As shown in FIG. 9, the main panel may be provided with a tether 400 connecting the rear panel 110 and the front panel 120.

The tether 400 may be joined by having one end sewn to the rear panel 110 and the other end sewn to the front panel 120.

When the cushion body 21 is inflated, tension is generated in the tether 400, which may limit the expansion thickness of the cushion body 21. The position and length of the tether 400 may vary depending on the shape and size of the cushion body 21.

According to the present invention, when the airbag cushion 20 is deployed, the protrusion chamber 22 protrudes from the cushion body 21 toward the center console (CC) to form a support structure with the center console (CC), thereby forming the cushion body ( 21) can be prevented from falling over to the seat next to you. Accordingly, it is possible to prevent occupants from moving over to the seat next to them, thereby minimizing collision injuries and protecting occupants more safely.

Although the present invention has been described above with reference to embodiments, those skilled in the art can make various modifications and modifications to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand that you can change it. And, the differences related to these modifications and changes should be construed as being included in the scope of the present invention as defined in the appended claims.

1: Side airbag device 10: Inflator
11: Nozzle 20: Airbag cushion
21: cushion body 22: protruding chamber
100: main panel 101: floating hole
102: Non-expansion area 110: Rear panel
120: front panel 200: protruding panel
201: Extra area 210: Folding structure
300, 300': diffuser pocket 310: discharge hole
320: opening 400: tether

Claims (9)

A main panel that expands with gas and forms a cushion body that extends toward the front of the vehicle and has a flow hole on one side; and
a protruding panel provided on the one surface of the main panel, coupled along the periphery of the flow hole, and forming a protrusion chamber that protrudes toward the center console by the gas flowing in through the flow hole as the cushion body expands;
Including,
The protruding panel has a folding structure folded along a folding line at the center, and when the folding structure is arranged to face the inside of the cushion body through the flow hole, the cushion body expands to the outside of the cushion body. An airbag cushion, characterized in that the folding structure is configured to unfold and inflate.
According to paragraph 1,
The main panel includes a rear panel facing the driver's seat and a front panel facing the center console disposed between the passenger seat and the driver's seat,
The airbag cushion is characterized in that the flow hole is provided in the front panel and the protruding panel is coupled to the outer surface of the front panel.
According to paragraph 2,
The main panel has a structure in which the rear panel and the front panel are left and right symmetrically connected based on a central fold line, and the rear panel and the front panel are overlapped along the fold line. An airbag cushion, characterized in that it is configured to form the cushion body by sewing along an edge and an edge of the front panel.
According to paragraph 2,
It further includes a diffuser pocket that accommodates an inflator and is disposed within the cushion body, where one end is sewn and coupled to the main panel,
The airbag cushion is characterized in that the diffuser pocket has a discharge hole on a side facing the front panel through which gas generated by the inflator is discharged.
According to clause 4,
The airbag cushion is characterized in that the discharge hole is arranged to face the folding structure at a position overlapping the flow hole.
According to clause 4,
The airbag cushion is characterized in that the diffuser pocket is configured to supply the gas into the cushion main body through the other side end which is not sewn and has an open structure while the upper and lower parts are sewn.
According to paragraph 1,
An airbag cushion, characterized in that a non-inflated area, which is an area that is not inflated, is formed in the main panel.
According to paragraph 1,
An airbag cushion, characterized in that the main panel is provided with a tether that limits the inflation thickness of the cushion body.
an inflator that generates gas; and
an airbag cushion that expands and deploys with the gas;
Including,
The airbag cushion is a side airbag device characterized in that it includes the airbag cushion according to claim 1.

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