KR20200047407A - Side Airbag - Google Patents

Abstract

An objective of the present invention is to effectively suppress the movement of a passenger in a colliding direction even if a passenger sits only in the driver′s seat. A side airbag device (1) includes a cushion (2) which is installed on a side of the widthwise direction center of a backrest part (SB) of one seat (S) of the driver′s seat (Sd) and a passenger seat (Sn), and restricts a movement of a passenger (P) in an impact acting direction during a collision to protect the corresponding passenger (P). An inflator (3) is installed in the cushion (2). The cushion (2) includes a main chamber (2a) and a sub chamber (2b) installed on a bubble panel (4b) opposite to the passenger-side bubble panel (4a) of the main chamber (2a) coming in contact with a passenger (P) sitting on the driver seat (Sd). When the passenger (P) sitting on the driver seat (Sd) moves towards the passenger seat side during a collision, the deployed sub chamber (2b) interferes with a driver seat-side side support part (SS) of the passenger seat (Sn), and a reaction from the passenger seat (Sn) is assigned to the deployed main chamber (2a).

Description

Side Airbag Device {Side Airbag}

The present invention relates to a side airbag device installed in a vehicle to protect a passenger, for example, when the vehicle is collided from the side (hereinafter referred to as a side collision). Particularly effective when installed on the center side in the width direction of the vehicle far from the side door (for example, the side of the passenger seat in the case of the driver's seat, the side of the driver's seat in the case of the passenger seat, hereinafter referred to as the far side). It relates to an airbag device.

Hereinafter, in the present application, 'upper' and 'upper' refer to the head direction of the passenger seated in the seat in the normal state, and 'lower' and 'downward' mean the step direction of the passenger seated in the seat in the 'normal' state. do. In addition, 'front', 'front' means the front side direction of the passenger seated in the seat in the normal state, and 'back' and 'rear' mean the rear side direction of the passenger seated in the 'seat' in the normal condition. In addition, the 'left and right direction' means the vehicle width direction.

For example, a side airbag device that protects the passenger by suppressing the passenger's movement in the direction in which the impact was applied in the event of a side collision is installed inside the side of the backrest of the seat (hereinafter referred to as the seatback).

This side airbag device is configured to, for example, generate gas by operating an inflator by an output signal transmitted by a sensor that detects an impact in a side collision, and deploy a cushion on the side of a passenger seated in a seat.

When the side airbag device is installed on the side close to the side door (near side), when the occupant collides with the cushion after deployment, the movement of the cushion in the direction in which the impact is applied is disturbed by the reaction force from the side door. The passenger's movement can be suppressed.

However, when the side airbag device is installed on the far side, there is no side door that interferes with the movement of the cushion in the direction in which the collision is applied, as is the case on the near side. Therefore, in order to suppress the movement of the passenger, it is necessary to hold the cushion after deployment to suppress the movement in the direction in which the impact has been applied.

When a side airbag device is installed on the far side, the restraining of the movement of the cushion after deployment is more necessary, for example, when the passenger is not seated in the passenger seat compared to when the passenger is seated in both the driver's seat and the passenger seat. .

Here, in the side airbag device installed on the far side, various configurations have been proposed to suppress the movement of the cushion in the direction in which the impact has occurred when the occupant collides with the cushion after deployment.

For example, in Patent Document 1, a side airbag device in which a sub-cushion that extends upward from the upper middle portion to the center console box is installed on the main cushion that allows the lower portion to enter between the passenger and the center console box during deployment. It is disclosed.

In the case of the side airbag device disclosed in Patent Document 1, the lower portion of the main cushion and the sub-cushion interfere with the center console box during deployment, thereby suppressing the movement of the main cushion in the direction of the impact.

However, in the case of the side airbag device disclosed in Patent Document 1, the length (height) in the vertical direction of the center console box that interferes with the main cushion and the sub cushion is limited. Therefore, when the occupant collides with the main cushion after deployment, the movement of the occupant in the direction in which the impact is applied cannot be sufficiently suppressed.

Patent Document 1: Japanese Patent Publication No. 2014-69729

The problem to be solved by the present invention is that, in the side airbag device that interferes with the center console box and the main cushion and sub-cushion of Patent Document 1, the cushion movement caused by the movement of the passenger in the direction in which the impact was applied in the event of a collision is sufficient. It cannot be suppressed.

The present invention is to solve the above problems, even when the occupant is seated only in the driver's seat and the passenger seat is vacant, when the occupant collides with the cushion after deployment, it is caused by the movement of the occupant in the direction in which the impact was applied. It is an object to effectively suppress the movement of the cushion.

In other words, the present invention is installed on the side portion of the far side of the seat back of either one of the seats and the other seats arranged side by side in the left and right direction to restrain the passengers from moving in the direction in which the impact was applied in the event of a collision. It is a side airbag device with a cushion that protects a passenger.

Inside the cushion, an inflator for generating gas by receiving a signal from a sensor and deploying the cushion is provided.

In addition, in the present invention, the cushion has a main chamber and a sub-chamber installed on a bubble panel on the opposite side to the bubble panel on the passenger side of the main chamber, which is contacted by a passenger seated in the one-way seat.

In the present invention, for example, when the occupant seated on one side of the vehicle is collided with the side of the other side and moves toward the other side, the unfolded subchamber is formed on the other side of the seat back side. Interferes with the support part. Then, by the interference, a reaction force from the other seat is applied to the deployed main chamber. Therefore, by setting the contact position of the other seat of the sub-chamber to the one-side seat-side side support part in the optimal position in the vertical direction, the main chamber effectively suppresses the movement of the passenger seated in one seat toward the other seat-side direction. You can. The optimal contact position of the sub-chamber to the other seat is an up-down position that can most effectively suppress the movement of the main chamber in the direction in which the impact is applied, and the shoulder portion of the passenger moving in the direction in which the impact is applied is in contact with the main chamber. It is the position in the vertical direction that abuts.

In the present invention, the main chamber is installed on either the seatback farside side of the one seat or the seatback farside side of the other seat.

In the case where the main chamber is installed in one seat, the main chamber is installed so that the subchamber is deployed from the front side of the one side seat side support portion of the other seat back. Alternatively, it is installed in the main chamber so that the subchamber is deployed from one side of the one side of the seat support side of the other side of the seat back.

By doing in this way, the subchamber abuts on the side where the other seat occupant seats the side support part of the one side seat side of the other seat by the movement of the occupant seated in one seat toward the other seat side. On the other hand, in the latter case, the sub-chamber abuts on the side or the corresponding side and front side of one side of the one side of the seat support side of the other seat back. By these contacting, it is possible to effectively suppress movement of the passenger seated in one seat toward the other seat side.

At this time, when the main chamber is divided into a vehicle front side chamber and a vehicle rear side chamber, and when the subchamber is installed in a double vehicle rear side chamber, gas flows smoothly in the order of the vehicle rear side chamber, vehicle front side chamber, and subchamber. Unfold.

Meanwhile, when the main chamber is divided into a vehicle front side chamber and a vehicle rear side chamber, and when the subchamber is installed in a double vehicle rear side chamber, gas flows smoothly from the vehicle rear side chamber to the subchamber and the vehicle front side chamber. Is done.

In addition, when the main portion of the rear chamber of the vehicle is deployed in the side support of the driver's seat when the cushion is deployed, the passenger can be more reliably moved away from the collision side. Even when the occupant, such as one out of position, is not seated in a regular position, it is possible to reduce unnecessary injuries by not applying excessive deployment pressure to the occupant. The main part of the vehicle rear-side chamber is a part that spans a wide range of the vehicle rear-side chamber as much as possible, including the periphery of the portion where the inflator is disposed.

On the other hand, when the main chamber is installed in the other seat, the subchamber is installed in the main chamber so as to be deployed to one side of the one side seat side support portion formed in the other seat back. In this way, when deployed, the main chamber can be positioned at the same left and right positions as when the main chamber is installed in one seat.

In the present invention, in the event of a collision, the deployed sub-chamber interferes with the passenger seat, which is the other seat, to provide a reaction force from the passenger seat to the deployed main chamber. Therefore, even when the passenger is seated only in the driver's seat, which is a one-way seat, the movement of the passenger seated in the driver's seat toward the passenger seat side can be effectively suppressed even when the passenger seat is empty.

1 is a view showing a first embodiment of a side airbag device of the present invention installed on a seat back of a driver's seat, (a) is a view showing a state before folding a cushion, (b) is AA enlarged view of (a) It is a cross section.
FIG. 2 is a view of (a) the deployed state of the side airbag device of the present invention shown in FIG. 1 from above the vehicle, (b) the driver's seat passenger moves from the state of (a) to the passenger seat side, and the cushion after deployment It is the figure which looked at the state supported by the vehicle from the upper side.
FIG. 3 is a view for explaining a second embodiment of the side airbag device of the present invention installed on the far-side seatback of the passenger seat, (a) is a view showing a state before folding the cushion, (b) is a BB of (a) It is an enlarged sectional view.
FIG. 4 is a view similar to FIG. 2 of the side airbag device of the present invention shown in FIG. 3.
FIG. 5 is the same view as FIG. 2 for explaining the third embodiment of the side airbag device of the present invention installed on the farside seatback of the driver's seat.
FIG. 6 is a view similar to FIG. 2 for explaining a fourth embodiment of the side airbag device of the present invention installed on the farside seatback of the driver's seat.
FIG. 7 is a view similar to FIG. 2 for explaining a fifth embodiment of the side airbag device of the present invention installed on the farside seatback of the driver's seat.

It is an object of the present invention to effectively move the cushion generated by the movement of the passenger in the direction in which the impact is applied when the passenger collides with the cushion after deployment even when the passenger is seated only in the driver's seat and the passenger seat is vacant. Can be suppressed.

In the present invention, the cushion for restraining the movement of the passenger in the direction in which the impact was applied in the event of a collision is provided with a main chamber and a sub-chamber, and the deployed sub-chamber interferes with the passenger seat to the deployed main chamber. The above object was realized by imparting a reaction force from.

<Example>

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

(First Example)

1 and 2 are views showing a first embodiment of the side airbag device of the present invention.

The side airbag device 1 of the present invention is a seatback frame inside the seatback SB in the seat frame serving as a skeleton of the seat S consisting of a seat cushion SC, a seat back SB and a headrest HR. (SBF). Hereinafter, one seat as the driver's seat is referred to as Sd, and the other seat as the passenger seat is referred to as Sn.

The side airbag device 1 receives an output signal from a sensor inside the cushion 2 and ejects gas inside the cushion 2 from its outer surface, for example, a cylindrical inflator 3 ).

On the outer surface of the inflator 3, two stud bolts 3a having an appropriate interval in the longitudinal direction are installed in a protruding state, and the cushion 2 is placed on the seatback frame (using these stud bolts 3a). SBF).

The cushion 2 is provided with a main chamber 2a and a sub-chamber 2b.

As shown in FIG. 1, the double main chamber 2a is formed to have a longer vertical direction than the front-rear direction, and has, for example, left and right symmetrical outer peripheral portions of a single bubble panel 4 formed to have a thickness in the left and right directions. By sewing 5, it is formed in the shape of a bag.

On the other hand, the sub-chamber 2b is formed in a pocket shape by sewing (7) the outer circumferential sides of the two bubble panels 6a, 6b, for example, and the passenger P seated in the driver's seat Sd is It is provided on the bubble panel 4b on the opposite side to the bubble panel 4a on the passenger side of the main chamber 2a in contact.

The installation of the subchamber 2b to the opposite bubble panel 4b is performed, for example, by sewing 8 the outer circumferential side of the one side bubble panel 6b of the subchamber 2b to the opposite bubble panel 4b. do. And, for example, inside the corresponding sewing 8, vent holes 9a and 9b are formed in two places to flow gas generated in the inflator 3 from the main chamber 2a to the subchamber 2b. Even around these vent holes 9a and 9b, the main chamber 2a (opposite side bubble panel 4b) and the subchamber 2b (bubble panel 6b) are sewn 10.

In the first embodiment, the main chamber 2a is divided into the vehicle front side chamber 2aa and the vehicle rear side chamber 2ab by the partition fabric 2ac sewn 11 to the main chamber 2a. .

A vent hole 12 is also formed in the partition fabric 2ac, and gas generated in the inflator 3 is allowed to flow into the vehicle front side chamber 2aa from the vehicle rear side chamber 2ab.

The vent hole 12 is, for example, provided at approximately the same height and height positions as the vent holes 9a and 9b, and at a position above the vent hole 9a. By forming the vent hole 12 at the corresponding position, gas generated from the inflator 3 is transferred from the vehicle rear side chamber 2ab to the vehicle front side chamber 2aa and the vehicle front side chamber 2aa to the subchamber 2b. It is introduced smoothly.

And in the event of a collision, the sub-chamber 2b is, for example, a vehicle rear side of the vehicle front-side chamber 2aa so as to deploy from the front side of the driver's-side side support portion SS formed in the seatback SB of the passenger seat Sn. It is provided in the vicinity of the side chamber 2ab (refer to FIGS. 1 (a) and 2 (a)).

On the other hand, by installing the inflator 3 in the vehicle rear side chamber 2ab, the main chamber 2a is installed on the side of the passenger seat side of the driver's seat Sd seatback SB with the inflator 3 interposed therebetween.

The sub-chamber (2b) is smoothly deployed to the front side of the side support portion (SS) of the passenger seat (Sn) in the event of a collision, shown in Figure 2 (b) by moving toward the passenger seat side of the passenger (P) As described above, the passenger seat of the driver's seat side support portion SS of the passenger seat Sn is in contact with the seated passenger.

The passenger seated in the driver's seat because the reaction force from the passenger seat Sn is applied to the deployed main chamber 2a by interference with the driver's seat side support unit SS of the passenger seat Sn of the subchamber 2b. It can effectively suppress that (P) moves toward the driver's seat side.

If the gas generated from the inflator 3 is smoothly supplied to the subchamber 2b, the installation position of the subchamber 2b to the main chamber 2a is the shoulder portion of the passenger P after the movement, the main chamber 2a It is preferable to install in the vicinity of the vertical position in contact with the.

(Second example)

3 and 4 are views showing a second embodiment of the side airbag device of the present invention. Also, in Figs. 3 and 4, the same reference numerals as those in Figs. 1 and 2 indicate equivalent parts or significant parts, and detailed descriptions are omitted.

2 and 3, the main chamber 2a is installed in the passenger seat Sn. In this second embodiment, as in the first embodiment, the main chamber 2a is divided into a vehicle front side chamber 2aa and a vehicle rear side chamber 2ab by a partition fabric 2ac.

And in this second embodiment, the sub-chamber 2b is installed in the vehicle rear-side chamber 2ab, and as shown in FIG. 4 (a) in the event of a collision, the sub-chamber 2b is seated in the passenger seat Sn (SB) ) Is deployed from the driver's seat side of the driver's seat side support portion (SS).

In this way, when deployed, the main chamber 2a can be positioned at the same position in the left and right directions as the first embodiment.

In the second embodiment, the vent hole 12 formed in the partition fabric 2ac is different from the first embodiment in which the subchamber 2b is installed in the vehicle front side chamber 2aa, for example, the partition fabric ( 2ac). By forming the vent hole 12 at the corresponding position, the gas generated in the inflator 3 is smoothly introduced from the vehicle rear side chamber 2ab to the vehicle front side chamber 2aa. In addition, the subchamber 2b is introduced directly from the vehicle rear side chamber 2ab.

The sub-chamber 2b is deployed to the driver's seat side of the side support portion SS of the passenger seat Sn as shown in FIG. 4 (a) in the event of a collision. And when the passenger (P) is moved toward the passenger seat layer direction, as shown in Figure 4 (b), the sub-chamber (2b) of the seat back (SB) of the passenger seat (Sn) of the side support portion (SS) of the driver's seat side It is in contact with the driver's seat side and front, and applies a reaction force from the passenger seat (Sn) to the main chamber (2a). Then, the movement of the passenger P toward the passenger seat side is effectively suppressed by this reaction force.

(Example 3)

5 is a view showing a third embodiment of the side airbag device of the present invention. Also, in Fig. 5, the same reference numerals as those in Fig. 2 denote equivalent parts or significant parts, and detailed descriptions thereof will be omitted.

In the third embodiment shown in FIG. 5, the main part of the vehicle rear side chamber 2ab of the first embodiment is deployed in the seat back SB of the driver's seat Sd and the side support portion SS of the passenger seat side of the driver's seat during a collision. .

Specifically, the installation position of the inflator 3 in the vehicle rear side chamber 2ab is moved forward from the rear end as in the first embodiment, and when deployed, most of the vehicle rear side chamber 2ab is the side support portion ( SS). In the example shown in FIG. 5, the cushion 2 during deployment is shown to be deployed on the front side of the side support portion SS.

In this way, the passenger P can be more reliably moved away from the passenger seat Sn on the collision side. Therefore, even when the passenger P seated in the driver's seat is out of position or the like, there is no excessive deployment pressure applied to the passenger P, so that unnecessary injury can be reduced. In addition, the out-of-position refers to a state in which the passenger P is not seated in a normal position, for example, a state in which the passenger is largely bent forward and the like.

It is needless to say that the present invention is not limited to the above examples, and the embodiments may be appropriately changed as long as they are within the scope of the technical spirit described in each claim.

That is, the side airbag device described above includes embodiments other than this as a preferred example of the present invention. In particular, the present invention is not limited to the shape, size, and configuration of the detailed parts shown in the accompanying drawings, unless otherwise stated in the present specification. In addition, the expressions and terminology used in this specification are for the purpose of description, and are not limited to it, unless there is a notice that it is specifically limited.

For example, instead of the first embodiment, as shown in Figs. 6 and 7, in the event of a collision, as in the second embodiment, the driver's seat of the driver's seat side support portion SS of the seat back SB of the passenger seat Sn The subchamber 2b may be deployed on the side.

In the fourth and fifth embodiments shown in Figs. 6 and 7, the subchamber 2b is installed in the vehicle rear side chamber 2ab.

In the fourth embodiment of FIG. 6, when the passenger P moves in the direction of the passenger seat in the event of a collision, the deployed sub-chamber 2b is the seat of the passenger seat Sn as shown in FIG. The side support portion SS is in contact with the side and front of the driver's seat side.

On the other hand, in the fifth embodiment of FIG. 7, when the passenger P moves in the direction of the passenger seat side in the event of a collision, the deployed sub-chamber 2b is seated in the passenger seat Sn as shown in FIG. The side support portion (SS) of the driver's seat side is in contact with the side.

Accordingly, the reaction force from the passenger seat Sn is applied to the main chamber 2a developed in the fourth and fifth embodiments shown in Figs. 6 and 7, and the movement of the passenger P toward the passenger seat side is effectively suppressed. can do.

In addition, in the fourth embodiment shown in FIG. 6, the subchamber 2b is installed in the vehicle rear side chamber 2ab, and the subchamber 2b is installed in the vicinity of the partition fabric 2ac of the vehicle front side chamber 2aa. May be

In addition, in the first to fifth embodiments shown in FIGS. 1 to 7, the main chamber 2a of the cushion 2 is divided into a vehicle front side chamber 2aa and a vehicle rear side chamber 2ab, but must be in front of the vehicle. It is not necessary to divide the side chamber 2aa and the vehicle rear side chamber 2ab.

1 side airbag device
2 cushion
2a main chamber
2aa Vehicle Front Chamber
2ab vehicle rear side chamber
2b subchamber
3 inflator
4 Bubble panel
4a Passenger side air bubble panel
4b Opposite side bubble panel
9a, 9b vent holes
10 plush
S seat
Sd one-way seat (driver's seat)
Sn other seat (passenger seat)
SB seatback
SS side support
SBF seatback frame
P passenger

Claims (11)

It is installed in the widthwise central side portion of the backrest of any one of the one seat and the other seats arranged side by side in the vehicle width direction, and restrains the passenger from moving in the direction in which the impact was applied in the event of a collision. As a side airbag device with a cushion to protect the
Simultaneously with the installation of an inflator that generates gas by receiving a signal from the sensor inside the cushion and deploys the cushion,
The cushion has a main chamber and a sub-chamber installed on a bubble panel on the opposite side of the bubble panel on the passenger side of the main chamber in contact with a passenger seated in the one-way seat,
When the occupant seated in the one-way seat in a collision moves toward the other seat-side direction, the deployed sub-chamber interferes with the one-side magnet-side side support part formed in the backrest part of the other seat, and is deployed Side airbag device, characterized in that configured to impart a reaction force from the other seat to the main chamber. According to claim 1,
When the occupant moves from the one seat toward the other seat side in the event of a collision, the deployed sub-chamber is the side where the occupant of the other seat of the side support portion of the one seat side of the other seat is seated Side airbag device, characterized in that in contact with. According to claim 1,
When the occupant moves from the one seat toward the other seat side during a collision, the deployed subchamber is in contact with the one side seat side of the side support portion of the one seat side of the other seat Side airbag device characterized by. According to claim 1,
When the occupant moves from the one-sided seat toward the other-side seat in a collision, the deployed sub-chamber is attached to the side and front sides of the one-side seat of the side support portion of the one-side seat side of the other seat. Side airbag device characterized in that it is in contact. The method of claim 1, 2, or 4,
The main chamber is divided into a vehicle front side chamber and a vehicle rear side chamber, and the side airbag device characterized in that the subchamber is installed in the vehicle front side chamber. The method of claim 1, 3 or 4,
The main chamber is divided into a vehicle front side chamber and a vehicle rear side chamber, and the side airbag device characterized in that the subchamber is installed in the vehicle rear side chamber. The method according to claim 5 or 6,
The side airbag device, characterized in that in a collision, a main portion of the vehicle rear side chamber is deployed within the side support portion. The method according to any one of claims 1 to 7,
The main chamber is a side airbag device, characterized in that provided in the side portion of the vehicle side in the vehicle width direction central portion of the backrest portion. The method according to any one of claims 1 to 7,
The main chamber is a side airbag device, characterized in that provided in the side portion of the vehicle seat in the vehicle width direction center side of the other side. The method according to any one of claims 1 to 9,
A vent hole through which gas generated from the inflator flows is formed in the sub-chamber and the installation part of the main chamber, and the sub-chamber and the main chamber are coupled by sewing around the vent hole and the outer circumference of the sub-chamber. Side airbag device. The method according to any one of claims 1 to 10,
The sub-chamber is a side airbag device, characterized in that the shoulder portion of the occupant is installed near a position in contact with the main chamber.

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