KR20240057826A - Side airbag device - Google Patents

Abstract

A side airbag device according to an embodiment of the present invention includes an inflator that is installed on a seatback frame provided in a seatback and generates gas; a cushion connected to the inflator by having a mount installed on a side of the seatback frame in the lower area of the rear end; and a guide member provided in the upper area of the rear end of the cushion and connected to a rail hole provided on a side of the seatback frame. The cushion is expanded when supplied with the gas and may be configured to move upward along the rail hole while being connected to the rail hole through the guide member in the process of being deployed from the side of the seatback to the front of the vehicle.

Description

Side airbag device {SIDE AIRBAG DEVICE}

The present invention relates to a side airbag device, and more specifically, to a center side airbag device disposed between the driver's seat and the passenger seat.

In general, vehicles are equipped with various types of airbag devices to protect occupants in the event of a collision. Among them, the side airbag device is configured to be deployed in the direction in which the side collision occurred to protect the occupants.

Among the side airbag devices, the center side airbag device is installed with the cushion facing the interior where the vehicle's center console is located. The cushion is deployed between the driver's seat occupant and the passenger seat occupant, and the occupant moves to the inside of the vehicle due to the recoil of a side collision. It serves to protect the head and chest by limiting the movement of the body.

However, in an actual collision situation, when there is no occupant in the passenger seat, the vehicle has no support force of its own, so it cannot restrain the movement of the driver's seat occupant, and sometimes collapses due to the occupant's lateral movement, resulting in a problem of not being effective in protecting the occupants. there is.

In addition, the deployment force of the cushion is controlled while the lower area of the cushion is fixed to the seat back, which causes the problem of increased fluidity as the gap between the upper area of the cushion and the seat back increases, and even if there is a passenger in the passenger seat, the driver's seat occupant and If the seat occupants are not aligned on the same line, support cannot be provided to the cushion, causing the cushion to rotate and freely change its position, resulting in a problem of collision between occupants.

Therefore, there is a need to improve this.

The present invention is intended to solve the above problems, and the problem to be solved by the present invention is to provide a side airbag device that allows the cushion to be stably supported when the cushion is deployed in the seatback.

The problem 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.

A side airbag device according to an embodiment of the present invention includes an inflator that is installed on a seatback frame provided in a seatback and generates gas; a cushion connected to the inflator by having a mount installed on a side of the seatback frame in the lower area of the rear end; and a guide member provided in the upper area of the rear end of the cushion and connected to a rail hole provided on a side of the seatback frame, wherein the cushion is inflated when supplied with the gas and is inflated at the side of the seatback at the front of the vehicle. It may be configured to move upward along the rail hole while being connected to the rail hole through the guide member in the process of unfolding.

The rail hole is provided in the form of a slit extending vertically along the side of the seatback frame, and the guide member includes a body portion that protrudes from the surface of the cushion facing the seatback and is inserted into the rail hole, and the body portion. It may include a locking portion extending laterally from the tip.

The locking portion may extend from one side of the body portion, or may extend in opposite directions from opposite sides of the body portion.

The seatback frame is bent downwardly from the top of the rail hole toward the front or rear of the seatback frame and has a receiving groove for accommodating the body portion, and the body portion moving upward along the rail hole is introduced into the receiving groove. Accordingly, it may be configured to constrain the movement of the body portion.

The cushion may include an internal non-expandable portion extending up and down along the longitudinal direction and an external non-expandable portion protruding forward from the upper area of the front end.

The cushion may further include a tether connecting the external non-expandable part and the internal non-expandable part.

The external non-expandable part and the internal non-expandable part may each have a tether hole into which the tether is inserted.

It may further include a cover for storing the cushion inside in a roll-folded state along with the inflator.

A side airbag device according to an embodiment of the present invention includes a seatback frame provided in a seatback and having rail holes extending vertically on the side; an inflator installed on a side of the seatback frame and generating gas; a cushion connected to the inflator by having a mount installed on a side of the seatback frame in the lower area of the rear end; and a guide member provided in the upper area of the rear end of the cushion and connected to the rail hole, wherein the cushion is inflated when supplied with the gas and is deployed from the side of the seatback to the front of the vehicle. It may be configured to move upward along the rail hole while being connected to the rail hole through a guide member.

According to an embodiment of the present invention, a side airbag device can be provided that allows the cushion to be stably supported when deployed in a seatback.

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 a cushion including an inflator and a guide member in a side airbag device according to an embodiment of the present invention.
Figure 3 is a diagram schematically showing the cushion in Figure 2.
Figure 4a is a diagram schematically showing a state in which a cushion and an inflator are stored in a cover.
FIG. 4B is a diagram schematically showing a cross section along line II in FIG. 4A.
Figure 5 is a diagram schematically showing the guide member moving while connected to the rail hole.
6A and 6B are views schematically showing a modified example of a guide member.
Figure 7 is a side view schematically showing a state in which a cushion is deployed on a seatback in a side airbag device according to an embodiment of the present invention.
Figure 8 is a front view of Figure 7.
Figure 9 is a diagram schematically showing a modified example of a rail hole.
FIG. 10 is a diagram schematically showing a guide member moving while connected to the rail hole of FIG. 9.

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 generally 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 meanings consistent with the meanings they have 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.

Figure 1 is a diagram schematically showing a side airbag device according to an embodiment of the present invention, and Figure 2 is a diagram schematically showing a cushion including an inflator and a guide member in the side airbag device according to an embodiment of the present invention. 3 is a view schematically showing the cushion in FIG. 2, FIG. 4a is a view schematically showing the cushion and inflator stored in the cover, FIG. 4b is a view schematically showing a cross section along line I-I in FIG. 4a, and FIG. 5 is a diagram schematically showing a guide member moving while connected to a rail hole, and FIGS. 6A and 6B are diagrams schematically showing a modified example of the guide member.

Referring to the drawings, the side airbag device 1 according to an embodiment of the present invention may include an inflator 10, a cushion 20, and a guide member 30. Depending on the embodiment, the side airbag device 1 may include a seatback frame 50 including a cover 40 and a rail hole 51.

The inflator 10 and cushion 20 may be installed on one side of the seatback frame 50 provided in the seatback (S) of the vehicle. In an embodiment, the seatback S may be the seatback of the driver's seat, and the side of the seatback frame 50 may be the side facing the passenger seat.

The seatback frame 50 may be provided with a rail hole 51 extending vertically on the side.

These rail holes 51 may be provided in the form of slits extending vertically along the side of the seatback frame 50.

The rail hole 51 may be located above the location where the inflator 10 and cushion 20 are installed.

The inflator 10 is installed on the side of the seatback frame 50 and can generate gas according to a signal transmitted from an airbag controller (ACU), not shown.

The inflator 10 may be formed in a round bar shape, and a gas generator and an ignition device may be installed inside. In an embodiment, the inflator 10 may be provided in a cylindrical shape with an outlet 11 at one end discharging gas.

The inflator 10 may be provided with a pair of fixing bolts 12 protruding, and the inflator 10 may be fixed to the seatback frame 50 through the fixing bolts 12.

The cushion 20 may be installed on the side of the seatback frame 50 together with the inflator 10.

The cushion 20 may expand from the side of the seatback S toward the front of the vehicle while being expanded by the gas discharged from the inflator 10. Accordingly, the cushion 20 is disposed between the driver's seat and the passenger seat to protect the occupants by absorbing shock between the driver's seat occupant and the passenger seat occupant.

The cushion 20 may be configured to be connected to the inflator 10 by having a mount 21 installed on the side of the seatback frame 50 in the lower area of the rear end. In addition, the cushion 20 may be provided with a guide member 40, which will be described later, in the upper area of the rear end.

The cushion 20 may be fixed to the seatback frame 50 through the mount 21.

In an embodiment, the mount 21 is provided with an assembly hole 21a through which the fixing bolt 12 of the inflator 10 is inserted so that the inflator 10 can be fastened, and the inflator 10 is connected to the cushion 20. ) can be placed within.

Depending on the location of the mount 21, the inflator 10 may be located in the lower area of the cushion 20.

As shown in FIG. 3 , the cushion 20 may include a first panel 22 facing the driver's seat and a second panel 23 facing the passenger seat. The first panel 22 and the second panel 23 may be made of a flexible fabric material, but are not limited thereto.

This cushion 20 may have a single panel structure in which the first panel 22 and the second panel 23 are symmetrically connected with respect to the central fold line L. Then, in a state where the first panel 22 and the second panel 23 are folded along the fold line L and overlapped, the edge of the first panel 22 and the edge of the second panel 23 are sewn. Through it, the cushion 20 can be formed.

In this embodiment, the first panel 22 and the second panel 23 are provided as a single panel structure integrally connected, but the present invention is not limited thereto.

For example, the cushion 20 is formed by separately cutting the first panel 22 and the second panel 23, which are provided in a separated state, and overlap the edge of the first panel 22 and the second panel 23. 2 It may be formed by sewing the edge of the panel 23.

The cushion 20 may be provided with an internal non-expandable portion 24 extending up and down along the longitudinal direction. The internal non-expandable portion 24 corresponds to a portion that is not expanded by gas and may be located approximately in the central area of the cushion 20.

The internal non-expandable portion 24 can limit the expansion thickness of the cushion 20 by being formed by sewing the first panel 22 and the second panel 23 butted against each other.

Additionally, the cushion 20 may be provided with an external non-expandable portion 25 that protrudes forward from the front end. The external non-expandable portion 25 may be located in the upper area of the cushion 20.

In an embodiment, the cushion 20 may include a tether 26 connecting the outer non-expandable portion 25 and the inner non-expandable portion 24. In this case, the inner non-expandable portion 24 and the outer non-expandable portion 25 may be provided with tether holes 24a and 25a into which the tether 26 is inserted, respectively.

The tether 26 is configured to surround and support the upper expansion portion of the deployed cushion 20. Accordingly, the rotation of the cushion 20 is reduced when a rider is loaded onto the cushion 20, thereby stably holding the rider's head. can be redeemed.

As shown in FIG. 4, the cushion 20 can be rolled up and folded tightly, and can be wrapped and stored in the cover 40 together with the inflator 10 in the rolled-folded state.

The cover 40 maintains the cushion 20 in a rolled-folded state and can protect the cushion 20 from damage from the external environment. Additionally, the cover 40 may be torn or separated by the expansion force of the cushion 20 so that the cushion 20 can be deployed.

Meanwhile, the guide member 30 may be provided in the upper area of the rear end of the cushion 20.

The guide member 30 protrudes from the cushion 20 and is connected to the rail hole 51 provided on the side of the seatback frame 50, and may be configured to move along the rail hole 51.

The guide member 30 may include a body portion 31 and a locking portion 32.

The body portion 31 may protrude from the surface of the cushion 20 facing the seat back (S). That is, the body portion 31 may be provided in a structure that is fixed to the first panel 22 of the cushion 20 and protrudes toward the seat back (S).

The body portion 31 may have a cross-sectional size corresponding to the gap between the rail holes 51 and may be inserted into and connected to the rail holes 51.

The body portion 31 may have a structure that reduces friction by minimizing contact with the rail hole 51 while moving along the rail hole 51. In an embodiment, the body portion 31 may have a circular cross-sectional shape, but is not limited thereto.

The locking portion 32 may extend laterally from the protruding end of the body portion 31.

The locking portion 32 may have a width corresponding to the cross-sectional size of the body portion 31, and accordingly may be configured to pass through the rail hole 51 when the body portion 31 is inserted into the rail hole 51. You can.

As shown in the drawing, the locking portion 32 may be provided as a pair of members and extend in opposite directions on opposite sides of the body portion 31. Of course, the locking portion 32 may be provided as a single member and extend from one side of the body portion 31.

As shown in Figure 5, this locking portion 32 is arranged in parallel with the rail hole 51, and as the body portion 31 is inserted into the rail hole 51, it passes through the rail hole 51 and is connected to the seatback frame. It is placed on the inside of (50), and then the body portion 31 is rotated so that the locking portion 32 is placed perpendicular to the rail hole 51 to prevent the body portion 31 from escaping from the rail hole 51. can be redeemed.

Figure 6 schematically shows a modified example of the guide member 30.

As shown in FIG. 6, the locking portion 32 may be provided as a separate member from the body portion 31. In an embodiment, the locking portion 32 may be provided in a pin-shaped structure that fits into the through hole 31a provided at the tip of the body portion 31.

In this way, the guide member 30 moves along the rail hole 51 in a state in which the body portion 31 connected to the rail hole 51 is restrained from escaping from the rail hole 51 by the catching portion 32. .

Figures 7 and 8 schematically show a state in which the cushion is deployed on the seatback in the side airbag device according to an embodiment of the present invention.

As shown in the drawing, the cushion 20 is expanded when supplied with gas and is connected to the rail hole 51 through the guide member 30 in the process of being deployed from the side of the seat back (S) to the front of the vehicle. It may be configured to move to the upper part of the seatback (S) and unfold along (51).

Therefore, the cushion 20 maintains a state in which both the lower and upper rear areas are bound to the seat back frame 50, so the fluidity of the cushion 20 is minimized so that the cushion 20 can be firmly supported. Collisions between passengers can be prevented.

9 and 10 schematically show a modified example of the rail hole 51.

Referring to the drawings, the seatback frame 50 may be provided with a receiving groove 52 that is inclined downwardly and bent toward the front or rear of the seatback frame 50 at the top of the rail hole 51.

The receiving groove 52 is a part that accommodates the body portion 31, and may be formed by being inclined downward from the top of the rail hole 51. In addition, as the body portion 31 moves upward along the rail hole 51 is drawn into the receiving groove 52, the movement of the body portion 31 may be restricted.

That is, the guide member 30 is restrained from moving to the lower part of the rail hole 51 as the body part 31 moves upward along the rail hole 51 and is then drawn into and locked in the receiving groove 52. It will happen.

Accordingly, the cushion 20 maintains the upper area connected to the seat back frame 50 while the lower area is fixed to the seat back frame 50 and moves upward along the side, thereby causing the cushion 20 to move upward. The final deployment shape and position can be implemented reliably.

As described above, according to the side airbag device (1) of the present invention, the upper area of the cushion deployed as in the prior art is spread apart from the seatback to prevent the driver's seat occupant and the passenger seat occupant from colliding with each other due to the space created between them. This allows for more effective protection of occupants.

In addition, unlike the conventional structure in which the deployment of the cushion 20 was controlled only by two fixing points in the lower area, the present invention can further improve the support force of the cushion 20 by adding a fixing point in the upper area.

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: outlet 12: fixing bolt
20: Cushion 21: Mount
21a: assembly hall 22: first panel
23: second panel 24: internal non-expandable portion
25: external non-expandable portion 26: tether
30: Guide member 31: Body portion
32: Hook 40: Cover
50: Seatback frame 51: Rail hole
52: Acceptance home

Claims (9)

An inflator installed on the seatback frame provided within the seatback and generating gas;
a cushion connected to the inflator by having a mount installed on a side of the seatback frame in the lower area of the rear end; and
a guide member provided in the upper area of the rear end of the cushion and connected to a rail hole provided on a side of the seatback frame;
Including,
The cushion is inflated when supplied with the gas, and in the process of being deployed from the side of the seatback to the front of the vehicle, the cushion is connected to the rail hole through the guide member and is configured to move upward along the rail hole. .
According to paragraph 1,
The rail hole is provided in the form of a slit extending vertically along the side of the seatback frame,
The guide member is a side airbag device including a body portion that protrudes from a surface of the cushion facing the seatback and is inserted into the rail hole, and a locking portion that extends laterally from a tip of the body portion.
According to paragraph 2,
A side airbag device wherein the locking portion extends from one side of the body portion or extends in opposite directions from opposite sides of the body portion.
According to paragraph 2,
The seatback frame is bent downwardly from the top of the rail hole toward the front or rear of the seatback frame and has a receiving groove for accommodating the body portion, and the body portion moving upward along the rail hole is introduced into the receiving groove. A side airbag device configured to restrict movement of the body portion.
According to paragraph 1,
The cushion is a side airbag device including an internal non-inflatable part extending up and down along the longitudinal direction and an external non-inflatable part protruding forward from the upper area of the front end.
According to clause 5,
The cushion further includes a tether connecting the external non-inflatable part and the internal non-inflatable part.
According to clause 6,
A side airbag device wherein the external non-expandable portion and the internal non-expandable portion each have a tether hole into which the tether is inserted.
According to paragraph 1,
A side airbag device further comprising a cover that stores the cushion inside in a roll-folded state along with the inflator.
A seatback frame provided within the seatback and having rail holes extending upward and downward on the side;
an inflator installed on a side of the seatback frame and generating gas;
a cushion connected to the inflator by having a mount installed on a side of the seatback frame in the lower area of the rear end; and
a guide member provided in the upper area of the rear end of the cushion and connected to the rail hole;
Including,
The cushion is inflated when supplied with the gas, and in the process of being deployed from the side of the seatback to the front of the vehicle, the cushion is connected to the rail hole through the guide member and is configured to move upward along the rail hole. .

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