KR20200084399A - Airbag apparatus of vehicle - Google Patents

Abstract

Relates to an airbag device of a vehicle, the first airbag module installed on each seat of the vehicle and sequentially expanding and deploying the far side airbag cushion toward the front and the far side of the occupant when the vehicle crashes, the side airbag cushion is deployed to the near side of the occupant And a second airbag module that sequentially expands and expands toward the front and gas venting means for controlling a pressure of the airbag cushion by venting a portion of the gas supplied to the far side airbag cushion or the side airbag cushion during a vehicle collision By providing a configuration, when the internal pressure of the airbag cushion rises in the event of a side collision of the vehicle, by venting some gas to adjust the pressure inside the cushion, it is possible to prevent an occupant from being injured due to an excessive increase in the internal pressure of the cushion.

Description

AIRBAG APPARATUS OF VEHICLE

The present invention relates to an airbag device for a vehicle, and more particularly, to an airbag device for a vehicle that expands and expands upon collision of a vehicle to restrain and protect a passenger.

In general, an automobile airbag device is a safety device that protects a passenger by inflating an airbag by injecting gas into an airbag according to a signal from a shock sensor when a vehicle crashes.

The airbag device is installed on a steering wheel or a dashboard, a seat, or a side wall provided in a vehicle, and is expanded toward the front or side of the occupant in the event of a vehicle collision to protect the occupant.

That is, the vehicle may be provided with a front airbag deployed in front of the driver's seat and a passenger seat, a curtain airbag and side airbag deployed at a side of the passenger to protect the passenger, and a knee airbag for protecting the knee of the passenger.

Meanwhile, in recent years, autonomous vehicles have been developed to move themselves without the driver driving the vehicle.

The autonomous vehicle uses a state-of-the-art sensor capable of recognizing surrounding objects and a high-performance graphic processing device to detect each device provided in the vehicle and the situation around the vehicle, and controls driving of each device provided in the vehicle according to the detection result. To drive.

The state-of-the-art sensor measures the distance between an object and a person like a person and detects a danger, thereby helping to see all areas without a blind spot. In addition, the graphic processing device identifies the surrounding environment of the vehicle through several cameras and analyzes the image to help the vehicle to safely drive.

For example, a self-driving vehicle may be equipped with LiDAR equipment, sound wave equipment, 3D cameras, radar equipment, and the like.

In the autonomous vehicle configured as described above, as the driver does not need to drive, the entire seat including the driver's seat rotates freely, and the angle of the backrest is adjusted to a horizontal state by a tilting operation.

The rider can adjust the angle of the backrest in various ways, or rotate the seat to face the rider in the back seat and have a meeting.

Therefore, it is impossible to apply a general airbag device designed on the basis of the posture in which the occupant is seated toward the front of the autonomous vehicle.

The following Patent Document 1 and Patent Document 2 disclose a vehicle passenger protection system configuration.

Republic of Korea Patent Registration No. 10-1655569 (announced on September 8, 2016) Republic of Korea Patent Registration No. 10-1611087 (announced on April 11, 2016)

On the other hand, passengers who board a self-driving car do not drive directly, so they can have a meeting by swiping the seat in the left-right direction while traveling to the destination, or take a break by recline the backrest. have.

As described above, in the autonomous vehicle, as the seat and the backrest can rotate freely in the front-rear and left-back directions, the direction and posture of the occupant can be variously changed.

Accordingly, a technology has been developed to prepare for an abnormal seating (hereinafter referred to as'OPP') state due to a change in the direction and posture of the occupant.

For example, if the occupant pulls the seat or sits in front of the seat and the distance between the airbag cushion and the occupant is too close, the occupant may be injured by the excessive initial deployment pressure of the airbag cushion.

Therefore, it is necessary to maintain the pressure inside the airbag to protect the occupant's head, and to regulate the vent gas to protect the occupants' ribs and pelvis.

As such, regardless of the direction and posture of the occupant in the event of an automobile collision, there is a need for an airbag technology capable of safely protecting the occupant.

An object of the present invention is to solve the problems as described above, to provide an airbag device for a vehicle that can safely protect the occupant by inflating and deploying airbags on the front and both sides of the occupant in the event of an automobile collision.

Another object of the present invention is to provide an airbag device for a vehicle that can safely protect the occupant regardless of the direction and posture of the occupant in the autonomous vehicle.

Another object of the present invention is to provide an airbag device for a vehicle that can prevent an occupant from being injured due to collision with an airbag cushion by adjusting the pressure of an airbag that is inflated and deployed on both sides of the occupant.

In order to achieve the above object, the airbag device of the vehicle according to the present invention is installed on each seat of the vehicle and sequentially expands and expands the far side airbag cushion toward the far side and front of the occupant when the vehicle crashes. The airbag module, the second airbag module that sequentially expands and deploys the side airbag cushion toward the front and the near side of the occupant, and a part of the gas supplied to the far side airbag cushion or the side airbag cushion in the event of a vehicle collision, vents the corresponding airbag cushion It characterized in that it comprises a gas venting means for adjusting the pressure of the.

As described above, according to the airbag device of the vehicle according to the present invention, the internal pressure of the side airbag cushion is increased by the deformation of the vehicle body during side collision in a vehicle to which the far side airbag cushion and the side airbag cushion are deployed on both sides of the occupant. If it does, the effect that the pressure inside the cushion can be adjusted by venting some gas is obtained.

Therefore, according to the present invention, the effect that the passenger can be prevented from being injured due to collision with the airbag cushion in the state where the internal pressure of the side airbag is excessively increased.

In addition, according to the present invention, even in the abnormal seating state of the occupant, it is possible to secure the occupant safely regardless of the orientation and posture of the occupant by adjusting the pressure balance between both airbag cushions.

1 is a perspective view of an airbag device for a vehicle according to a preferred embodiment of the present invention,
2 and 3 are perspective and plan views showing the airbag device of the vehicle shown in FIG. 1 from different angles;
Figure 4 is a state diagram of the operation of the airbag device in the event of a side collision of the vehicle,
5 is a block diagram of a vehicle airbag device according to another embodiment of the present invention.

Hereinafter, an airbag device of a vehicle according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the present embodiment, the operation in setting the autonomous driving mode using the configuration of the airbag device applied to the autonomous driving vehicle is described, but the present invention is not limited thereto, and in a general driving mode in which the driver drives the vehicle and a general vehicle It should be noted that can be applied with existing airbag cushions.

And this embodiment describes the configuration installed on the back of the driver's seat of a general vehicle, it should be noted that the present invention can be applied to not only the driver's seat, but also the passenger seat and the rear seat.

Hereinafter, the direction toward the front of the car centered on the driver's seat is called'front', and the direction toward the rear of the car is called'rear'. In addition, terms indicating directions such as'left','right','upper' and'downward' are defined to indicate respective directions based on the front and rear.

1 is a perspective view and a plan view of an airbag device of a vehicle according to a preferred embodiment of the present invention, and FIGS. 2 and 3 are views of the airbag device of the vehicle shown in FIG. 1 from different angles.

The airbag device of the vehicle according to the present invention expands and expands the far side airbag cushion from the side of the occupant in contact with the other occupant (hereinafter referred to as'far side') to the front, and the side of the occupant adjacent to the vehicle body ( Hereinafter, the side airbag cushion is expanded and expanded from the'near side' toward the front.

In addition, the airbag device of the vehicle according to the present invention moves a part of the gas to another airbag when the pressure inside the airbag on one side is excessively increased due to a side collision of the vehicle in an abnormal seating state of the occupant.

Accordingly, the present invention provides a far side airbag and a side airbag and a front airbag that simultaneously protect both sides and the front of the occupant, and at the same time, the occupant due to excessive deployment pressure inside the airbag when the vehicle collides with the vehicle in an abnormally seated state. Prevent injury.

In detail, the airbag device 10 of a vehicle according to a preferred embodiment of the present invention is installed in each seat 11 of the vehicle, as shown in FIGS. (21) a first airbag module 20 that sequentially expands and expands toward the far side and front of the occupant, and a second airbag module that expands and expands the side airbag cushion 31 sequentially toward the near side and front of the occupant ( 30) and the gas venting means 40 for venting the gas between the far side airbag cushion 21 or the side airbag cushion 31 so that the far side airbag cushion 21 and the side airbag cushion 31 achieve a pressure balance. Includes.

And the airbag device 10 of the vehicle according to a preferred embodiment of the present invention may further include a tether unit 50 that defines the deployment shape of the far side airbag cushion 21 and the side airbag cushion 31.

The first airbag module 20 is supplied with a gas generated by a first inflator (not shown) and a first inflator that is ignited by a detection signal of a collision detection sensor (not shown) to generate gas when a vehicle crashes. And a far side airbag cushion 21 that expands and expands in front of the far side of the occupant.

The far side airbag cushion 21 includes a far side airbag 22 corresponding to the far side of the occupant and a first front airbag 23 corresponding to the front side of the occupant, and from the top to correspond to the far side and front of the occupant When viewed, it may be formed in a'L' shape.

The far side airbag 22 supports and restrains the occupant's side, especially the arms and shoulders, and the first front airbag 23 functions to protect the abdomen and head, centering on the occupant's front, particularly the chest.

To this end, the first front airbag 23 may be expanded and expanded to a height corresponding to a head portion in the abdomen of the occupant.

Here, the far side airbag 22 may be formed to taper to increase in height as it goes toward the front of the vehicle.

The far side airbag 22 and the first front airbag 23 may each include at least one chamber that is expanded and expanded by gas supply.

The chamber can be divided by a sewing line that sews both sides of each airbag (22, 23).

For example, each chamber may be arranged side by side along the left-right direction or the up-down direction by at least one sewing line sewn along the up-down direction or the left-right direction.

The far side airbag cushion 21 includes an inner panel contacting the occupant during expansion and an outer panel facing the opposite side of the inner panel, and the inner panel and the edges of the outer panel are joined by a sewing method or the like to form a bag. It can be formed into a shape.

The outer panel may be provided longer than the lateral length of the inner panel so that the far side airbag cushion 21 expands and expands toward the front of the occupant by changing the deployment direction at the far side of the occupant.

Alternatively, a tether (not shown) that limits the distance between the distal end portion of the far side airbag 22 and the distal end portion of the first front airbag 23 may be installed in the far side airbag cushion 21.

The second airbag module 30 is supplied with the gas generated by the second inflator (not shown) and the second inflator that generates gas by being ignited by the detection signal of the collision detection sensor (not shown) when the vehicle crashes. It includes a side airbag cushion 31 that is expanded and deployed to the near side and front of the occupant.

The side airbag cushion 31 includes a side airbag 32 corresponding to the near side of the occupant and a second front airbag 33 corresponding to the front of the occupant, when viewed from the top to correspond to the near side and front of the occupant It may be bent in a'┛' shape.

The side airbag 32 supports and restrains the occupant's side, especially the arm and shoulder, and the second front airbag 33 functions to protect the abdomen and head region around the occupant's front, particularly the chest.

To this end, the second front airbag 33 may be expanded and expanded to a height corresponding to the head portion in the abdomen of the occupant.

Here, the side airbag 32 may be formed to be tapered so as to increase in height as it goes toward the front of the vehicle.

The side airbag 32 and the second front airbag 33 may each include at least one chamber that is expanded and expanded by gas supply.

The chamber can be divided by a sewing line sewn on both sides of each airbag (32,33).

For example, each chamber may be arranged side by side along the left-right direction or the up-down direction by at least one sewing line sewn along the up-down direction or the left-right direction.

The side airbag cushion 31 includes an inner panel that contacts the occupant during expansion and an outer panel facing the opposite side of the inner panel, and is formed in a bag shape by joining the edges of the inner panel and the outer panel by a sewing method or the like. Can.

The outer panel may be provided longer than the lateral length of the inner panel so that the side airbag cushion 31 expands and expands toward the front of the occupant by switching the deployment direction from the near side of the occupant.

Alternatively, a tether (not shown) that defines a distance between the front end of the side airbag 32 and the front end of the second front airbag 33 may be installed on the side airbag cushion 31.

Meanwhile, in FIGS. 1 to 3, the far side airbag cushion 21 and the side airbag cushion 31 are illustrated as being in contact with each other at the front center of the occupant, but the present invention is not limited thereto.

For example, the present invention can be modified to adjust the width of the far side airbag cushion and the side airbag cushion in various ratios, such as 2:8, 3:7, 7:3, 8:2, as well as a 5:5 ratio. .

The tether unit 50 functions to limit the deployment shape of the far side airbag cushion 21 and the side airbag cushion 31.

In particular, the tether unit 50 may limit the deployment shape such that the tip ends of the respective cushions 21 and 31 contact each other when the vehicle crashes.

To this end, the tether unit 50 includes a first tether 51 that defines the deployment shape of the far side airbag cushion 21 and a second tether 52 that defines the deployment shape of the side airbag cushion 31. Can.

The first and second tethers 51 and 52 are connected to both ends of the seat 11 and the back 12, respectively, and the central portion is disposed on the outer surfaces of the far side airbag cushion 21 and the side airbag cushion 31. Can.

Of course, the present invention is not necessarily limited to this, and the first and second tethers may be connected to each other to be modified to simultaneously define the deployment shape of the far side airbag cushion and the side airbag cushion as one tether.

In addition, the present invention can change the connection position in various ways, such as connecting both ends of the first and second tethers to any one of the seat back and seat, or to the rear end side of the far side airbag cushion and the side airbag cushion.

The gas venting means 40 connects the rear ends of the far side airbag cushion 21 and the side airbag cushion 31, and vents a portion of the gas supplied to each of the cushions 21, 31 to provide other cushions 31, 21. It may include a first venting member 41 to move to achieve a pressure balance.

That is, the first venting member 41 has both ends connected to the far side airbag 22 and the side airbag 32, respectively, and the air vented from the far side airbag 22 or the side airbag 32 is another airbag 32. ,22).

The first venting member 41 is accommodated in a rolling or folding state inside the back 12 of the seat 11, and when the vehicle crashes, the back of the back 12 by gas vented between the airbags 22, 32 It can be expanded and expanded to the rear of the backrest 12 through the incision formed in the rear cover of the.

As described above, the present invention is different from the airbag module in which pressure is increased due to a collision through a gas venting means when a side collision or an inclined collision occurs in a vehicle in which a pair of airbag modules inflated and deployed toward both sides and the front of a passenger is applied. The gas is moved to the airbag module.

Accordingly, the present invention can prevent the injury of the occupant due to collision with the airbag cushion inflated and expanded by excessive pressure by achieving a pressure balance of a pair of airbags that are inflated and deployed on both sides of the occupant.

Next, with reference to Figures 3 and 4 will be described in detail the operation method of the airbag device of a vehicle according to a preferred embodiment of the present invention.

Figure 4 is a state diagram of the operation of the airbag device in the side collision of the vehicle.

3 and 4, when a side collision (or a slope collision) of the vehicle occurs, the first and second inflators provided in the first and second airbag modules 20 and 30 are respectively installed in the vehicle body. It is ignited by the detection signal of the sensor and generates gas.

Then, the far side airbag cushion 21 and the side airbag cushion 31 are respectively supplied with gas and expanded forward on both sides of the occupant, and the first of the tether and the tether unit 50 installed in each cushion 21 and 31 And by the second tethers 51 and 52, the deployment direction is further shifted toward the front of the occupant.

The front ends of the far side airbag cushion 21 and the side airbag cushion 31 contact each other at the front of the occupant.

On the other hand, when the pressure inside the side airbag 32 is increased by pressing the side airbag 32 while the vehicle body is deformed toward the inside due to the side collision, a part of the gas supplied to the side airbag 32 is a gas venting means ( 40) moves to the far side airbag 22 side through the first venting member 41.

As described above, when the internal pressure of the side airbag cushion rises due to the deformation of the vehicle body during side collision of the vehicle, some gas can be vented to the far side airbag cushion side to achieve pressure balance.

Therefore, the present invention can prevent an occupant from being injured due to a collision with an airbag cushion whose internal pressure is excessively increased.

In addition, the present invention can be adjusted to achieve a pressure balance between the airbag cushions on both sides even in the abnormal seating state of the occupant, thereby safely protecting the occupant regardless of the orientation and posture of the occupant.

Meanwhile, in the present exemplary embodiment, the first venting member for connecting the far side airbag 32 and the side airbag 32 to the gas venting means 40 is provided, but the present invention is not limited thereto.

For example, FIG. 5 is a configuration diagram of an airbag device for a vehicle according to another embodiment of the present invention.

The airbag device 10 of the vehicle according to another embodiment of the present invention is the same as the configuration of the airbag device 10 of the vehicle described with reference to FIG. 3, as illustrated in FIG. 5, except that the gas venting means 40 is It may include a second venting member 42 for venting a part of the gas supplied to the side airbag cushion 31 in the event of a collision of an automobile and an expansion chamber 43 provided at an end of the second venting member 42.

That is, in the present embodiment, when the pressure of the side airbag cushion 31 is excessively increased, the second venting member 42 vents a portion of the gas supplied to the side airbag cushion 31 and delivers it to the expansion chamber 43 Then, the expansion chamber 43 is expanded and stored temporarily by the vented gas.

As described above, according to the present invention, when the internal pressure of the side airbag cushion rises excessively in the event of a vehicle crash, some gas is vented toward the expansion chamber to adjust the internal pressure of the side airbag cushion, thereby controlling the internal pressure of the side airbag cushion to excessively rise. It is possible to prevent an occupant from being injured by a collision.

Of course, the present invention may be modified to simultaneously apply the first and second venting members and the expansion chamber to the gas venting means.

In addition, in the above embodiments, it has been described as venting a part of the gas supplied to the side airbag, but the present invention provides the pressure in the far side airbag when the pressure inside the far side airbag rises excessively by the movement of another passenger. It can also be modified to vent the gas to the side airbag side.

Although the invention made by the present inventors has been described in detail according to the above-described embodiments, the present invention is not limited to the above-described embodiments, and it is needless to say that it can be changed in various ways without departing from the gist thereof.

That is, in the above embodiment, the operation in setting the autonomous driving mode using the configuration of the airbag device applied to the autonomous driving vehicle is described, but the present invention provides a conventional airbag cushion in the general driving mode in which the driver drives the vehicle and in the general vehicle. It can be changed to be applicable along with.

In the above embodiment, the configuration installed on the back of the driver's seat of a general vehicle is described, but the present invention can be changed to be applicable to not only the driver's seat, but also the passenger seat and the rear seat.

The present invention is applied to a vehicle airbag device technology that prevents an occupant from being injured due to excessive pressure rise by venting gas to achieve a pressure balance inside the far side airbag cushion and the side airbag cushion deployed on both sides of the occupant.

10: car airbag device
11: seat 12: backrest
20: first airbag module 21: far side airbag cushion
22: far side airbag 23: first front airbag
30: second airbag module 31: side airbag cushion
32: side airbag 33: second front airbag
40: gas venting means 41,42: first and second venting member
43: expansion chamber
50: tether unit 51,52: 1st, 2nd tether

Claims (5)

A first airbag module installed on each seat of the vehicle and sequentially expanding and deploying the far side airbag cushion toward the far side and front of the occupant in the event of a collision of the vehicle,
A second airbag module that sequentially expands and deploys the side airbag cushion toward the near side and front of the occupant, and
And a gas venting means for controlling a pressure of the corresponding airbag cushion by venting a portion of the gas supplied to the far side airbag cushion or the side airbag cushion in the event of a vehicle collision. According to claim 1,
The gas venting means includes a first venting member that connects the rear end of the far side airbag cushion and the side airbag cushion, and vents a portion of the gas supplied to each cushion to move to another cushion to achieve pressure balance. Airbag device of the car to be said. According to claim 1,
The gas venting means includes a second venting member that vents a part of the gas supplied to the far side airbag cushion or the side airbag cushion in the event of a vehicle collision.
And an expansion chamber provided at an end portion of the second venting member and preserving gas vented through the second venting member. According to claim 1,
The gas venting means connects the rear ends of the far side airbag cushion and the side airbag cushion, and vents a portion of the gas supplied to each cushion to move it to another cushion, thereby forming a pressure balance by first venting member,
A second venting member for venting a part of the gas supplied to the far side airbag cushion or the side airbag cushion in the event of a vehicle collision, and
And an expansion chamber provided at an end portion of the second venting member and preserving gas vented through the second venting member. The method according to any one of claims 1 to 4,
And a tether unit defining a deployment shape of the far side airbag cushion and the side airbag cushion.

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