KR102300446B1 - Airbag apparatus of vehicle - Google Patents

Abstract

It relates to an airbag device for a vehicle, which is embedded in a seat and expands and deploys upwards in the event of a collision to restrain the side and front of the occupant, and in the event of a collision of a vehicle, gas is generated by an impact detection signal to the airbag cushion A configuration is provided that includes an inflator that supplies the airbag cushion and a connecting member that connects the seat and moves the front end of the seat upward so as to prevent forward movement of the lower body of the occupant when the airbag cushion is deployed. When the airbag cushion is inflated and deployed to constrain the front and sides of the occupant, and the front end of the seat is deformed to protrude upward in response to the inflating and deploying motion of the airbag cushion, the submarine phenomenon in which the lower body of the occupant slides off the seat and moves forward can be prevented

Description

Airbag device in automobiles

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an airbag device for a vehicle, and more particularly, to an airbag device for a vehicle that is inflated and deployed during a collision to restrain and protect an occupant.

BACKGROUND ART In general, an automobile airbag device is a safety device that protects an occupant by rapidly inflating the airbag by injecting gas into the airbag according to a signal of an impact sensor during a vehicle collision.

Such an airbag device is installed on a steering wheel, a dashboard, a seat, a side wall, etc. provided in a vehicle, and is inflated toward the front or side of the occupant when the vehicle collides to protect the occupant.

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

Meanwhile, in recent years, autonomous vehicles that move by themselves even when the driver does not drive the vehicle are being developed.

The autonomous vehicle uses a high-tech 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 the operation 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 an object like a human, detects danger, and helps to see all areas without blind spots. In addition, the graphic processing device identifies the surrounding environment of the vehicle through a plurality of cameras, and analyzes the images to help the vehicle safely drive.

For example, the autonomous vehicle may be equipped with LiDAR equipment, sound wave equipment, 3D camera, 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 tilting operation.

The occupant can adjust the angle of the backrest in various ways, and the seat can be rotated to face a meeting with the occupant in the rear seat.

Therefore, it is impossible to apply a general airbag device designed based on the posture in which the occupant is seated on the seat facing forward to the autonomous vehicle.

The following Patent Documents 1 and 2 disclose a configuration of a vehicle occupant protection system.

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, as occupants in an autonomous vehicle do not need to drive themselves, they can swivel the seat left and right while moving to their destination to have a meeting or talk while facing other occupants, or recline the seat back. ) to take a break.

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

In particular, when a collision or sudden deceleration of the vehicle occurs while the occupant rotates the backrest rearward, there is a problem in that the submarine phenomenon occurs in which the occupant slides forward or downward from the seat.

In addition, when a vehicle collides, an object or damaged part placed inside the vehicle may fly and cause injury to the occupant.

Accordingly, there is a need for an airbag technology capable of safely protecting occupants regardless of the direction and posture of the occupant during a vehicle collision.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems, and to provide an airbag device for a vehicle capable of safely protecting an occupant by inflating and deploying the airbag on the side and front of the occupant during a collision of the vehicle.

Another object of the present invention is to provide an airbag device for a vehicle that can safely protect the side, front, and lower body of an occupant in an autonomous vehicle regardless of the occupant's posture.

Another object of the present invention is to provide an airbag device for a vehicle that is capable of embedding an airbag in a seat and inflating and deploying the airbag to restrain the occupant's side and front surfaces in the event of a vehicle collision.

In order to achieve the above object, an airbag device for a vehicle according to the present invention is embedded in a seat, inflates and deploys upwards when the vehicle collides to restrain the side and front surfaces of the occupant, and detects the impact when the vehicle collides. An inflator that generates gas according to a signal and supplies it to the airbag cushion, and a connecting member that connects the airbag cushion and the seat and moves the front end of the seat upward to prevent forward movement of the lower body of the occupant when the airbag cushion is deployed It is characterized in that it includes.

As described above, according to the airbag device for a vehicle according to the present invention, it is possible to safely protect the occupant by restraining the front and side surfaces of the occupant by inflating and deploying the airbag cushion built into the seat.

And according to the present invention, the submarine phenomenon in which the lower body of the occupant slides from the seat and moves forward by connecting the seat and the airbag cushion using a connecting member and deforming the front end of the seat to protrude upward during the inflation and deployment operation of the airbag cushion The effect of being able to prevent is obtained.

In addition, according to the present invention, the sub-marine phenomenon can be effectively blocked by increasing the force blocking the forward movement of the occupant by expanding and deploying the auxiliary chamber of the airbag cushion at the front end of the seat to convexly deform the front end of the seat upward. effect is obtained.

In addition, according to the present invention, a pair of airbag cushions are built-in on both sides of the seat, and the pair of airbag cushions are connected using a connecting member so that the front end of the seat is moved upward according to the inflation and deployment operation of the airbag cushion in the event of a car crash. By moving to , there is an effect that the anti-submarine function that prevents the lower body of the occupant from sliding forward from the seat can be improved compared to the case where one airbag cushion is provided.

1 is a perspective view of a seat to which an airbag device of a vehicle according to a first embodiment of the present invention is applied;
2 is a cross-sectional view taken along line A-A' shown in FIG. 1;
3 and 4 are a perspective view and a front view showing a state in which an airbag cushion is deployed in the airbag device of the vehicle shown in FIG. 1, respectively;
5 is a cross-sectional view of an airbag device for a vehicle according to a second embodiment of the present invention;
6 is a front view of an airbag device for a vehicle according to a third embodiment of the present invention;

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

According to the present invention, an airbag device is built into a seat and the airbag cushion is expanded and deployed upwards and forward from the side of the seat in case of collision of a vehicle, thereby restraining the side and front of the occupant to safely protect the occupant.

In addition, the present invention provides an anti-submarine function that prevents the occupant from sliding forward in the seat by moving the front end of the seat upward in conjunction with the deployment of the airbag cushion.

Hereinafter, the configuration of the airbag device installed in the driver's seat of a general vehicle will be described, the direction toward the front of the vehicle centered on the driver's seat is referred to as 'front (F)', and the direction toward the rear of the vehicle is referred to as 'rear (B)'. do. In addition, the terms indicating the direction such as 'left (L)', 'right (R)', 'up (U)' and 'down (D)' indicate each direction based on the front and rear defined as doing In addition, reference numeral I shown in the drawings denotes an interior direction of the vehicle in the width direction of the vehicle, and reference numeral O denotes an exterior direction of the vehicle in the width direction of the vehicle.

Accordingly, the front and rear (F, B) directions of the vehicle may be expressed in a horizontal direction, and the up and down (U, D) directions of the vehicle may be expressed in a vertical direction.

FIG. 1 is a perspective view of a seat to which an airbag device of a vehicle is applied according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line A-A' shown in FIG. 1 .

3 and 4 are respectively a perspective view and a front view showing a state in which the airbag cushion is deployed in the airbag device of the vehicle shown in FIG. 1 .

As shown in FIGS. 1 and 2 , the airbag device 10 for a vehicle according to the first embodiment of the present invention is embedded in the seat 11 and is expanded and deployed upwards when the vehicle collides with the side and front surfaces of the occupant. The airbag cushion 20 that restrains the airbag cushion 20, the inflator 21 that generates gas by a shock detection signal in the event of a car collision and supplies it to the airbag cushion 20, and the airbag cushion 20 and the seat 11 are connected and the airbag cushion A connection member 30 for moving the front end of the seat 11 upward to prevent forward movement of the lower body of the occupant during the deployment operation of (20) is included.

The airbag cushion 20 inflates and deploys upward from the seat 11 to secure the occupant's pelvis and the entire upper body, that is, the side and front surfaces of the occupant's abdomen, chest, neck, and head, thereby protecting the occupant safely. do.

To this end, the airbag cushion 20 is formed to be inflated and deployed in a substantially hexahedral shape, and may be inflated and deployed upwardly from the side of the occupant, or may be inflated and deployed while twisting from the side of the occupant to the front when viewed from the front.

For example, the airbag cushion 20 is the outside of the seat 11 while cutting the cut-out line 13 formed on the left side or corner of the seat 11 when viewed from the passenger's near side side, FIGS. 3 and 4 . It can be withdrawn and expanded and deployed upward and forward toward the side and front of the occupant's head.

To this end, a plurality of chamber walls 23 dividing the airbag cushion 20 into a plurality of chambers 22 may be formed in the airbag cushion 20 .

Each chamber wall 23 may be formed approximately horizontally, or may be formed in an approximately '⊃' shape and disposed in parallel up and down.

The chamber wall 23 may be provided as a non-inflated area in which both panels constituting the airbag cushion 20 are sewn.

On the other hand, the front end of the airbag cushion 20 disposed close to the front end of the seat 11 as seen in FIG. 3 is rearward so that the airbag cushion 20 can be inflated and deployed in a twisted shape from the side of the passenger toward the front. It is preferred to expand to a length and thickness greater than the end.

That is, when the airbag cushion 20 is deployed, the right end of each chamber 22 partitioned by the plurality of chamber walls 23 expands and deploys significantly in the vertical length and left and right width compared to the left end, and thus the airbag cushion 20 ) may be developed in a twisted shape from the left end of the occupant toward the front.

The connecting member 30 connects the seat 11 and the airbag cushion 20 and functions to move the front end of the seat 11 upward in conjunction with the inflation and deployment operation of the airbag cushion 20 .

In detail, one end of the connecting member 30 , the right end as seen in FIG. 2 is connected to the right end of the front end of the seat 11 , and the left end of the connecting member 30 is connected to the airbag cushion 20 . do.

Here, a seat frame 14 having a substantially rectangular frame shape is provided inside the seat 11 . The airbag cushion 20 and the inflator 21 that are folded or wound on one side of the seat frame 14 and the left side when viewed in FIG. 2 are installed.

One side of the connecting member 30, that is, the front side 31 as seen in FIG. 3 is disposed along the lower surface of the sheet 11 at the left end of the sheet 11, as shown in FIGS. 2 to 4, and , the front end 32 of the connecting member 30 may be connected to the right end of the seat 11 .

The rear end 33 of the connecting member 30 is disposed along the front end, upper end, and rear end edges of the airbag cushion 20 , and the rear end 34 of the connecting member 30 is on the left side of the seat frame 14 . can be connected to the pole.

The connecting member 30 may be provided as a tether or panel manufactured to have a predetermined length using a fabric having the same or similar characteristics as the airbag cushion 20 .

Here, the connecting member 30 is provided to have a length shorter than the sum of the lengths of the front end, upper end, and rear end of the airbag cushion 20 and the width of the seat 11 .

Therefore, when the airbag cushion 20 is inflated and deployed, the front end of the seat 11 connected to the front end 32 of the connecting member 30 is deformed to protrude upward as shown in FIGS. 3 and 4 .

As described above, according to the present invention, the occupant can be safely protected by inflating and deploying the airbag cushion embedded in the seat to restrain the front and side surfaces of the occupant.

In addition, the present invention uses a connecting member to connect the seat and the airbag cushion to deform the front end of the seat to protrude upward during the inflation and deployment operation of the airbag cushion, thereby preventing the submarine phenomenon in which the lower body of the occupant slides off the seat and moves forward. can do.

On the other hand, in the present embodiment, in the connection member 30 , after the rear end 33 is disposed along the front end, upper end, and rear end edges of the airbag cushion 20 , the rear end 34 is attached to the seat frame 14 . As it is fixed, a function of limiting the deployment shape of the airbag cushion 20 may also be provided so that the airbag cushion 20 is disposed on the side and front surfaces of the occupant.

Of course, the present invention is not necessarily limited thereto, and the rear end 34 of the connecting member 30 may be changed to be selectively connected to any one of the front end, the upper end, and the rear end of the airbag cushion 20 .

5 is a cross-sectional view of an airbag device for a vehicle according to a second embodiment of the present invention.

As shown in FIG. 5 , in the airbag device 10 for a vehicle according to the second embodiment of the present invention, the airbag cushion 10 includes a main chamber 22 and a seat 11 that are inflated and deployed on the side and front surfaces of the occupant. It may further include an auxiliary chamber 24 that is expanded and deployed at the front end of the seat 11 so as to convexly deform the front end of the sheet 11 in the upward direction.

The auxiliary chamber 24 is formed to extend downward from one side, for example, the lower end, of the main chamber 22 of the airbag cushion 20 that is inflated and deployed on the side and front surfaces of the occupant, and the seat ( 11) can be expanded and deployed at the front end.

The auxiliary chamber 24 may be installed under the cushion of the seat 11 or installed inside the cushion of the seat 11 .

As described above, according to the present invention, the sub-marine phenomenon can be effectively blocked by increasing the force blocking the forward movement of the occupant by expanding and deploying the auxiliary chamber of the airbag cushion at the front end of the seat to convexly deform the front end of the seat upward.

6 is a front view of an airbag device for a vehicle according to a third embodiment of the present invention.

As shown in FIG. 6 , in the airbag device 10 for a vehicle according to the third embodiment of the present invention, the airbag cushion 20 is provided as a pair so as to be inflated and deployed upward and forward from both sides of the occupant.

To this end, a connection flow path is provided to deploy the gas generated by one inflator 21 to a pair of airbag cushions, or a pair of inflator 21 is installed on both sides of the seat frame 14 of the seat 10 . can

A pair of airbag cushions 20 are each built inside the seat 11, and when the vehicle crashes, the incision lines 13 formed on both sides of the seat 11 are cut, respectively, to be inflated and deployed toward the side and the front of the occupant. can

Both ends of the connecting member 30 may be connected to the pair of airbag cushions 20 , and the middle portion of the connecting member 30 may be disposed below the front end of the seat 11 .

Accordingly, when the pair of airbag cushions 20 are inflated and deployed upon collision of a vehicle, the connecting member 30 moves upward so that the front end of the seat 11 has an approximately 'U' shape.

Accordingly, as the lower body of the occupant, in particular, both thigh portions disposed on the front end of the seat 11 are lifted upward while in close contact with each other, the occupant's forward movement is restricted.

As described above, according to the present invention, a pair of airbag cushions are built-in on both sides of the seat, and the pair of airbag cushions are connected using a connecting member so that the front end of the seat is moved upward according to the inflation and deployment operation of the airbag cushion in the event of a car crash. can be moved

Accordingly, the present invention can provide an improved anti-submarine function that prevents the lower body of the occupant from sliding forward from the seat, compared to the first embodiment in which one airbag cushion is provided.

Meanwhile, in the present embodiment, it has been described that the pair of airbag cushions 20 and the seat 11 are sequentially connected using one connecting member 30 , but the present invention is not necessarily limited thereto. It may be changed to connect both sides of each airbag cushion 20 and the seat 11 to each other using the connecting member 30 of

Also, the present invention may be modified to connect the airbag cushion 20 and the seat 11 by installing a plurality of connecting members 30 between the airbag cushion 20 and the seat 11 .

Although the invention made by the present inventors has been described in detail according to the above embodiments, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the gist of the present invention.

That is, although the configuration of the airbag device installed in the driver's seat has been described in the above embodiment, the present invention is not necessarily limited thereto, and may be changed to be applicable to a passenger seat or a rear row seat.

In particular, the present invention can be applied to each seat of an autonomous vehicle in which the left-right rotation of the seat and the forward-backward rotation of the backrest are free to effectively restrain and safely protect the occupant rotated in various directions and postures.

The present invention is applied to a vehicle airbag device technology that expands and deploys during a vehicle collision to effectively restrain and protect an occupant's upper and lower body.

10: car airbag device
11: Seat 12: Backrest
13: cut line 14: seat frame
20: airbag cushion 21: inflator
22: chamber 23: chamber wall
24: auxiliary chamber
30: connection member 31: front side
32: front end 33: rear end
34: rear end

Claims (8)

An airbag cushion embedded in the seat and expanding upwards in the event of a car crash to restrain the occupant's side and front surfaces;
an inflator that generates gas by an impact detection signal in the event of a car crash and supplies it to the airbag cushion;
and a connecting member that connects the airbag cushion and the seat and moves the front end of the seat upward to prevent forward movement of the lower body of the occupant during the deployment operation of the airbag cushion, wherein the airbag cushion faces the front from the side of the occupant It expands and develops while twisting to constrain the side and front surfaces of the occupant's pelvis and the entire upper body,
The airbag cushion includes a plurality of chambers partitioned by a plurality of chamber walls,
The length and width of the front end of the airbag cushion are formed larger than the rear end so that one side of the seat is twisted toward the front of the occupant and deployed,
One end of each chamber expands and develops in terms of vertical length and left and right width compared to the other end,
The airbag device for a vehicle, characterized in that the connecting member is provided as a tether or panel manufactured using a fabric. According to claim 1,
The front side of the connecting member is disposed along the lower surface of the sheet at the left end of the sheet,
The front end of the connecting member is connected to the right end of the seat,
An airbag device for a vehicle, characterized in that the rear end of the connecting member is connected to the airbag cushion. 3. The method of claim 2,
A rear portion of the connecting member is disposed along an edge of the airbag cushion,
The rear end of the connecting member is connected to a seat frame provided inside the seat. 3. The method of claim 2,
The rear end of the connecting member is connected to any one of a front end, an upper end, and a rear end edge of the airbag cushion. According to claim 1,
The airbag cushion includes a main chamber that is inflated and deployed on the side and front of the occupant;
It is formed to extend to one side of the main chamber, and includes an auxiliary chamber that expands and develops at the front end of the sheet to convexly deform the front end of the sheet upward,
The auxiliary chamber is installed under the cushion of the seat or is installed inside the cushion of the seat. According to claim 1,
The airbag cushions are provided as a pair to be installed on both sides of the seat, and are inflated and deployed on both sides and the front of the occupant,
and the connecting member connects the pair of airbag cushions to the seat. 7. The method of claim 6,
Both ends of the connecting member are respectively connected to the pair of airbag cushions,
The central portion of the connecting member is disposed on the front end of the sheet,
The airbag device of an automobile according to claim 1, wherein the connecting member is deformed to move the thigh portions of the passenger in close contact with each other when the pair of airbag cushions are inflated and deployed. 7. The method of claim 6,
The connecting member is provided as a pair in which one end is connected to the pair of airbag cushions and the other end is connected to the seat,
An airbag device for a vehicle, characterized in that when the pair of airbag cushions are inflated and deployed, the front end of the seat is moved upward so that the thigh portions of both sides of the occupant are brought into close contact with each other and moved upward.

Images