KR20220101437A - Driver airbag system - Google Patents

Abstract

Introduced is a driver's seat airbag system for a vehicle. According to the present invention, the driver's seat airbag system for the vehicle of the present invention comprises: an airbag housing which is located at the rear of a steering wheel wherein a function unit is provided at the center of a rim, and wherein the upper surface is open; an actuator which slides the airbag housing in the front and rear directions of the steering wheel; an airbag cushion accommodated inside the airbag housing, and deployed while the airbag housing is slid forward of the steering wheel and expanded toward the front of the steering wheel through a space between the function unit and a rim of the steering wheel; a prediction unit which predicts a vehicle collision; and a control unit controlling the actuator to slide the airbag housing forward of the steering wheel when the prediction unit predicts the vehicle collision. An objective of the present invention is to provide an airbag apparatus which limits the deployment direction of the airbag cushion.

Description

Driver's seat airbag system {DRIVER AIRBAG SYSTEM}

The present invention relates to a driver's seat airbag device for a vehicle, and more particularly, to an airbag device that induces a deployment direction so that the airbag cushion is deployed while avoiding a display device mounted on a steering wheel of a vehicle.

As a measure to protect the safety of vehicle occupants, various types of airbag devices are provided in the vehicle. Among them, the driver's seat airbag device is mounted on a steering wheel.

The driver's seat airbag device receives the control signal from the airbag control unit and when the inflator explodes, the airbag cushion protrudes from the steering wheel by the pressure of the airbag gas injected from the inflator and is deployed toward the driver. It is designed to protect the upper body.

On the other hand, if the autonomous driving situation in which the vehicle finds its own destination without the driver directly operating the steering wheel, accelerator pedal and brake is universally realized, the driver can select the relaxation mode to take a break without directly driving the vehicle while driving. Also, a display device may be provided on the steering wheel for a comfortable rest of the driver in the relaxation mode situation.

However, the driver's airbag cushion should be deployed to the driver's side while protruding forward of the display device when an accident occurs.

In order to solve this problem, a structure in which the airbag cushion is deployed while avoiding the display device has been developed, but it is difficult to deploy the airbag cushion in a desired direction.

The matters described as the background art above are only for improving the understanding of the background of the present invention, and should not be taken as an acknowledgment that they correspond to the prior art already known to those of ordinary skill in the art.

KR 10-2012-0044831 A

The present invention has been proposed to solve this problem, and it is an object of the present invention to provide an airbag device that restricts the deployment direction of the airbag cushion by sliding the airbag housing in front of the steering wheel so that the airbag cushion comes into contact with the steering wheel when the housing cover is opened.

The driver's seat airbag system according to the present invention comprises: an airbag housing positioned at the rear of a steering wheel in which a functional part is provided in the center of a rim and having an open upper surface; an actuator for sliding the airbag housing in a forward and backward direction of the steering wheel; an airbag cushion accommodated in the airbag housing, deployed in a state in which the airbag housing is slid forward of the steering wheel, and inflated forward of the steering wheel through a space between the functional unit and the rim of the steering wheel; a predictor for predicting a vehicle collision; and a control unit for controlling the actuator to slide the airbag housing forward of the steering wheel when the prediction unit predicts the collision of the vehicle.

The prediction unit may be connected to a camera sensor, a radar sensor, an ultrasonic sensor, or a lidar sensor to predict a vehicle collision.

a gas injection device connected to the lower portion of the airbag cushion to inject gas into the airbag cushion; and a sensing unit for detecting the collision of the vehicle; the control unit may deploy the airbag cushion by controlling the gas injection device when the sensing unit detects the collision of the vehicle.

The control unit may control the actuator to slide the airbag housing toward the rear of the steering wheel when a collision of a vehicle is not detected for a predetermined time by the sensing unit in a state in which the airbag housing is slid forward of the steering wheel.

and a housing cover coupled to the airbag housing to cover the opening of the airbag housing and opening the airbag housing at a limited angle toward the front of the steering wheel while being damaged by the deployment pressure of the airbag cushion.

The opening of the airbag housing is opened upward of the steering wheel, and the housing cover is rotated with respect to the airbag housing so that the front end is moved upward, thereby opening the airbag housing toward the front of the steering wheel.

The rear end of the housing cover extends further rearward along the front-rear direction of the steering wheel than the rear end of the airbag housing, a protruding protrusion is formed on the rear side of the airbag housing, and the rear end of the housing cover rotates the housing cover based on the airbag housing. As it comes into contact with the protrusion, the rotation of the housing cover can be prevented.

As the front end of the housing cover rotates upward based on the rear end of the airbag housing in a state in which the airbag housing is slid forward of the steering wheel, the housing cover comes into contact with the rim, thereby preventing rotation of the housing cover.

The steering wheel has an armature provided at the center of the steering wheel, coupled to the rim through a connection part and provided with a mounting space, and the airbag housing is slidably coupled to the armature and slidable by an actuator.

The actuator includes a driving motor coupled to the steering wheel and driven to rotate the rotating shaft, a pinion gear coupled to the rotating shaft of the driving motor to rotate, and an airbag housing coupled to the pinion gear and extending in the forward and backward directions of the steering wheel to rotate the pinion gear Accordingly, a rack gear for sliding the airbag housing may be included.

It further includes a rail coupled to the steering wheel and slidably coupled to the rack gear.

a first bracket coupled to the rear of the functional part and extending to the rear of the steering wheel to connect the functional part and the steering wheel; and a second bracket coupled to the airbag housing and extending to the rear of the steering wheel to connect the airbag housing and the steering wheel in a state where the functional part and the airbag housing are spaced apart; the rack gear includes a first bracket and a second bracket It is integrally coupled to the drive motor so that the functional part and the airbag housing can slide at the same time.

The functional unit located at the center of the steering wheel may be a display device mounted on the steering wheel.

The driver's seat airbag system according to the present invention predicts a vehicle collision and slides the airbag housing to the front of the steering wheel, and then deploys the airbag cushion to induce the airbag cushion to deploy between the steering wheel and the functional unit. It has the effect of preventing breakage or scattering.

In addition, as the airbag housing moves to the front of the steering wheel, when the housing cover is opened, it is fixed in contact with the steering wheel. can have an effect.

1 is an exploded and combined perspective view of a functional part, an airbag housing, and a steering wheel of a driver's seat airbag system according to an embodiment of the present invention;
Figure 2 is a cross-sectional view AA of Figure 1,
3 is a side cross-sectional view showing the operation of the driver's seat airbag system according to an embodiment of the present invention;
4 is a cross-sectional view illustrating an operation of an actuator in the driver's seat airbag system according to an embodiment of the present invention;
5 is a cross-sectional view of a portion in which an actuator is connected to an airbag housing and an armature in the driver's seat airbag system according to an embodiment of the present invention;
6 is a perspective view of an actuator and a rail in the driver's seat airbag system according to an embodiment of the present invention;
7 is a configuration diagram of a driver's seat airbag system according to an embodiment of the present invention.

Specific structural or functional descriptions of the embodiments of the present invention disclosed in the present specification or application are only exemplified for the purpose of describing the embodiments according to the present invention, and the embodiments according to the present invention are implemented in various forms. and should not be construed as being limited to the embodiments described in the present specification or application.

Since the embodiment according to the present invention may have various changes and may have various forms, specific embodiments will be illustrated in the drawings and described in detail in the present specification or application. However, this is not intended to limit the embodiment according to the concept of the present invention with respect to a specific disclosed form, and should be understood to include all changes, equivalents or substitutes included in the spirit and scope of the present invention.

Terms such as first and/or second may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one element from another element, for example, without departing from the scope of the present invention, a first element may be called a second element, and similarly The second component may also be referred to as the first component.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but it is understood that other components may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle. Other expressions describing the relationship between elements, such as "between" and "immediately between" or "neighboring to" and "directly adjacent to", etc., should be interpreted similarly.

The terms used herein are used only to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. As used herein, terms such as “comprise” or “have” are intended to designate that an embodied feature, number, step, action, component, part, or combination thereof exists, and is intended to indicate that one or more other features or numbers are present. , it should be understood that it does not preclude the existence or addition of steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as meanings consistent with the context of the related art, and unless explicitly defined in the present specification, they are not to be interpreted in an ideal or excessively formal meaning. .

Hereinafter, the present invention will be described in detail by describing preferred embodiments of the present invention with reference to the accompanying drawings. Like reference numerals in each figure indicate like elements.

The prediction unit 10, the control unit 20, and the sensing unit 30 according to an exemplary embodiment of the present invention receive data about an algorithm configured to control the operation of various components of the vehicle or a software command for reproducing the algorithm. It may be implemented via a non-volatile memory (not shown) configured to store and a processor (not shown) configured to perform the operations described below using data stored in the memory. Here, the memory and the processor may be implemented as separate chips. Alternatively, the memory and processor may be implemented as a single chip integrated with each other. A processor may take the form of one or more processors.

1 is an exploded and combined perspective view of a functional part 600, an airbag housing 200, and a steering wheel 100 of a driver's seat airbag system according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1, and FIG. 3 is A side cross-sectional view showing the operation of the driver's seat airbag system according to the embodiment of the present invention, FIG. 4 is a cross-sectional view showing the operation of the actuator 700 in the driver's seat airbag system according to the embodiment of the present invention 6 is a cross-sectional view of a portion in which the actuator 700 is connected to the airbag housing 200 and the armature 120 in the driver's seat airbag system according to the embodiment, and FIG. 6 is the actuator 700 and the rail 800 in the driver's seat airbag system according to the embodiment of the present invention. ) A perspective view, FIG. 7 is a configuration diagram of a driver's seat airbag system according to an embodiment of the present invention.

A preferred embodiment of the driver's seat airbag system according to the present invention will be described with reference to the drawings shown in FIGS. 1 to 7 .

The driver's seat airbag system according to the present invention includes an airbag housing 200 with an open upper surface and located at the rear of a steering wheel 100 having a function unit 600 provided at the center of a rim 110; an actuator 700 for sliding the airbag housing 200 in the front-rear direction of the steering wheel 100; It is accommodated in the airbag housing 200 and is deployed in a state in which the airbag housing 200 is slid forward of the steering wheel 100 through the functional part 600 and the rim 110 of the steering wheel 100 . an airbag cushion 300 that is inflated forward of the steering wheel 100; a prediction unit 10 for predicting a collision of a vehicle; and a control unit 20 for controlling the actuator 700 to slide the airbag housing 200 forward of the steering wheel 100 when the prediction unit 10 predicts a vehicle collision.

The steering wheel 100 may mean a rim 110 coupled to the functional part 600 to surround the functional part 600 located in the central part from the outside. In addition, as will be described later, the armature 120 fixed to the steering wheel 100 may be coupled to the rear of the steering wheel 100 .

The functional unit 600 is located in the center of the steering wheel 100 , and the airbag cushion 300 located at the rear of the steering wheel 100 avoids the functional unit 600 and moves toward the front of the steering wheel 100 . can be developed Accordingly, by preventing the deployment pressure of the airbag cushion 300 from being applied to the functional part 600 , damage to the functional part 600 or its scattering can be prevented.

The functional unit 600 located at the center of the steering wheel 100 according to an embodiment of the present invention may be a display device mounted on the steering wheel 100 .

The display device may be a screen display device for a driver's infotainment, and may display a screen such as a vehicle state or navigation.

According to another embodiment, the functional unit 600 may be an emblem mounted on the steering wheel 100 or an emblem provided with a lighting device.

The airbag housing 200 may be mounted at the rear of the steering. In particular, the armature 120 is fixed to the steering wheel 100 at the rear of the steering wheel 100 , and the airbag housing 200 is slidably coupled to the armature 120 to be mounted on the rear of the steering wheel 100 . can In particular, the airbag housing 200 may be located at the rear of the functional unit 600 provided in the central portion of the steering wheel 100 .

As an embodiment, the airbag housing 200 may be a container having an opening formed therein, and in an embodiment, may have a rectangular parallelepiped shape from which the upper surface is removed.

The airbag cushion 300 may be accommodated in the airbag housing 200 , and when gas is injected therein, it may be deployed forward of the steering wheel 100 through an obstacle and the steering wheel 100 . In particular, the airbag cushion 300 may be deployed to the outside of the airbag housing 200 through the opening of the airbag housing 200 .

The airbag housing 200 may be slidably coupled in the forward and backward directions of the steering wheel 100 together with the functional unit 600, and the actuator 700 is connected between the airbag housing 200 and the steering wheel 100. The airbag housing 200 and the functional unit 600 may be slid in the front-rear direction of the steering wheel 100 .

When the airbag housing 200 is slid forward of the steering wheel 100, a part of the opening of the airbag housing 200 is located in front of the rim 110 of the steering wheel 100 so that the airbag cushion 300 is deployed. When deployed between the rim 110 and the functional part 600 , the functional part 600 is not hit and it has an effect that it can be deployed in front of the passenger.

The prediction unit 10 predicts the collision of the vehicle, and when the prediction unit 10 predicts the collision of the vehicle, the control unit 20 connected to the actuator 700 operates the actuator 700 to operate a part of the airbag housing 200 . can be slid forward of the steering wheel 100 .

The airbag cushion 300 is deployed upward in a state in which the actuator 700 slides the airbag housing 200 forward of the steering wheel 100 , and between the functional unit 600 and the rim 110 of the steering wheel 100 . is positioned in front of the driver to protect the front of the driver, and prevents the driver from collided with the steering wheel 100 .

Through this, there is an effect that can be prevented from being deployed to the rear of the steering wheel 100 when the airbag cushion 300 is deployed, and also, due to the deployment pressure of the airbag cushion 300 , the functional unit 600 and the airbag There is an effect that can prevent the cushion 300 from collided with the functional unit 600 from being scattered or damaged.

The prediction unit 10 may be connected to the camera sensor 11 , the radar sensor 12 , the ultrasonic sensor 13 , or the lidar sensor 14 to predict a vehicle collision.

The prediction unit 10 is connected to a camera sensor 11 , a radar sensor 12 , an ultrasonic sensor 13 or a lidar sensor 14 that is mounted on a vehicle and detects an external vehicle or an external obstacle, and is connected to TTC (Time to collision). ) and predict the collision between the vehicle and an external vehicle or an external obstacle.

a gas injection device 400 connected to the lower portion of the airbag cushion 300 to inject gas into the airbag cushion 300; and a sensing unit 30 for detecting a collision of a vehicle; the control unit 20 controls the gas injection device 400 when the sensing unit 30 detects a collision of a vehicle to close the airbag cushion 300 can be developed

The gas injection device 400 may be connected to the lower portion of the airbag cushion 300 and inject gas upward from the inside of the airbag cushion 300 to deploy the airbag cushion 300 .

In addition, the control unit 20 is connected to the gas injection device 400, the detection unit 30 is connected to the collision detection sensor to detect a vehicle collision, the control unit 20 to operate the gas injection device 400 The airbag cushion 300 may be deployed.

Accordingly, the collision of the vehicle is detected, and the airbag cushion 300 is deployed at the same time as the detection is effective to protect the front of the driver.

The controller 20 removes the airbag housing 200 from the steering wheel 100 when a collision of the vehicle is not detected for a preset time by the sensing unit 30 in a state in which the airbag housing 200 is slid forward of the steering wheel 100 . ) can be controlled to slide the actuator 700 to the rear.

The prediction unit 10 may predict the collision of the vehicle, and when the prediction unit 10 predicts the collision of the vehicle, the control unit 20 controls the actuator 700 so that the airbag housing 200 slides forward of the steering wheel 100 . ), and when the airbag housing 200 is slid forward of the steering wheel 100 and a vehicle collision accident does not occur due to various variables for a preset time period, the control unit 20 controls the airbag housing ( The operation of the actuator 700 may be controlled to slide the 200 ) to the initial position of the rear of the steering wheel 100 .

Through this, in a normal driving state where there is no risk of collision of the vehicle, the airbag housing 200 is positioned at the rear of the steering wheel 100, thereby improving the marketability of the steering wheel 100, and when a vehicle collision is predicted, the airbag cushion ( The airbag housing 200 slides forward only in a situation in which the 300) is to be deployed, and the airbag cushion 300 is deployed to protect passengers and improve stability.

The airbag housing 200 is coupled to the airbag housing 200 so as to cover the opening of the airbag housing 200 , and the airbag housing 200 is opened at a limited angle toward the front of the steering wheel 100 while being damaged by the deployment pressure of the airbag cushion 300 . It further includes a housing cover (500).

As shown in FIG. 3 , the upper portion of the airbag housing 200 is opened, and the housing cover 500 covers the upper portion of the airbag housing 200 and may be coupled to the airbag housing 200, and the airbag cushion ( 300) may be deployed by opening the housing cover 500 when the gas is injected from the gas injection device 400 and deployed.

Through this, the housing cover 500 blocks the upper part of the airbag housing 200 before the airbag cushion 300 is deployed to improve the appearance of the product, and foreign substances are inserted into the airbag housing 200, or the airbag cushion ( 300) has the effect of preventing it from being damaged before deployment.

The opening of the airbag housing 200 is opened upward of the steering wheel 100, and the housing cover 500 is rotated with respect to the airbag housing 200 so that the front end is moved upward, thereby turning the airbag housing 200 into the steering wheel. It can be opened toward the front of (100).

Specifically, the housing cover 500 can open the opening of the airbag housing 200 by being rotated with respect to the airbag housing 200, and in particular, the opening of the airbag housing 200 is positioned in front of the steering wheel 100. can be opened toward Accordingly, it is possible to induce the airbag cushion 300 to be deployed in front of the steering wheel 100 .

Accordingly, the housing cover 500 does not completely open the opening of the airbag housing 200 that is opened upward, but opens it at a limited angle toward the front of the steering wheel 100 so that the airbag cushion 300 becomes the steering wheel 100 . ) can be induced to rotate forward.

The opening of the airbag housing 200 is opened upward of the steering wheel 100, and the housing cover 500 is rotated with respect to the airbag housing 200 so that the front end is moved upward, thereby turning the airbag housing 200 into the steering wheel. It can be opened toward the front of (100).

The housing cover 500 may be rotated with respect to the airbag housing 200 in a direction in which the front end moves upward. In one embodiment, the rear end of the housing cover 500 may be rotated in a direction in which the front end is moved upward by being rotatably coupled to the airbag housing 200 .

In another embodiment, the housing cover 500 is rotatably coupled to the airbag housing 200 between the front end and the rear end. It can be rotated in a downward movement direction.

The rear end of the housing cover 500 extends further rearward along the front-rear direction of the steering wheel 100 than the rear end of the airbag housing 200 , and a protruding protrusion 210 is formed on the rear side of the airbag housing 200 . The rear end of the housing cover 500 may be in contact with the protrusion 210 as the housing cover 500 rotates with respect to the airbag housing 200 , thereby preventing the rotation of the housing cover 500 .

As the front end of the housing cover 500 is rotated with respect to the airbag housing 200 in the upward movement direction, the rear end of the housing cover 500 extending further rearward than the rear end of the airbag housing 200 is downward can be moved to

The rear end of the housing cover 500 moved downward comes into contact with the protrusion 210 formed in the airbag housing 200, thereby preventing the housing cover 500 from further rotating with respect to the airbag housing 200. have. That is, the front end of the housing cover 500 may be prevented from moving upward any more. Accordingly, the housing cover 500 may be prevented from rotating at a limited angle toward the front of the steering wheel 100 .

The housing cover 500 is in contact with the rim 110 as the front end is rotated upward based on the rear end of the airbag housing 200 in a state in which the airbag housing 200 is slid forward of the steering wheel 100. The rotation of the uzing cover 500 may be prevented.

As shown in FIG. 3 , the housing cover 500 is sheared by the deployment pressure of the airbag cushion 300 when the airbag cushion 300 is deployed after the airbag housing 200 slides forward of the steering wheel 100 . When the part is rotated upward, it is opened, and the front end is in contact with the steering wheel 100 so that the opening angle can be limited.

Through this, there is an effect of supporting the rear of the airbag cushion 300 and preventing the ambulances from being deployed to the rear of the steering wheel 100 .

The steering wheel 100 has an armature 120 provided at the center of the steering wheel 100 , coupled to the rim 110 through a connection part and provided with a mounting space, and the airbag housing 200 slides on the armature 120 . Possibly coupled and slid by the actuator 700 .

As shown in FIG. 1 , the airbag housing 200 may be coupled to the armature 120 coupled to the rim 110 of the steering wheel 100 , and the airbag housing 200 is coupled to the armature 120 . It can be slid forward or backward of the steering wheel 100 .

The actuator 700 for sliding the airbag housing 200 is a driving motor 710 coupled to the armature 120 and driven to rotate the rotation shaft, a pinion gear 720 coupled to the rotation shaft of the driving motor 710 and rotating, and The rack gear 730 is coupled to the airbag housing 200, meshes with the pinion gear 720, extends in the front and rear direction of the steering wheel 100, and slides the airbag housing 200 according to the rotation of the pinion gear 720. may be included.

In the actuator 700 , the controller 20 is connected to the driving motor 710 to control the rotation of the driving motor 710 , and the pinion gear 720 is connected to the rotation shaft of the driving motor 710 to rotate, and the rack gear Reference numeral 730 meshes with the pinion gear 720 and is coupled to the airbag housing 200 to slide the airbag housing 200 in the front and rear directions according to the rotation direction of the pinion gear 720 .

The actuator 700 may be formed of a configuration other than the driving motor 710 , the pinion gear 720 , and the rack gear 730 .

A rail 800 coupled to the steering wheel 100 and slidably coupled to the rack gear 730; further includes.

The rail 800 extends in the front-rear direction of the steering wheel 100 and is coupled to the armature 120 , the rack gear 730 is slidably inserted therein, and the pinion gear 720 is inserted upwards to the pinion gear. As the 720 and the rack gear 730 mesh with each other, there is an effect that the airbag housing 200 can be stably slid.

a first bracket 610 coupled to the rear of the functional unit 600 and extending to the rear of the steering wheel 100 to connect the functional unit 600 and the steering wheel 100; And coupled to the airbag housing 200 and extending to the rear of the steering wheel 100 to connect the airbag housing 200 and the steering wheel 100 in a state where the functional part 600 and the airbag housing 200 are spaced apart 2 brackets 220; is further included, and the rack gear 730 is integrally coupled to the first bracket 610 and the second bracket 220 so that when the driving motor 710 is operated, the functional unit 600 and the airbag The housing 200 may slide at the same time.

The first bracket 610 and the second bracket 220 are coupled to the steering wheel 100 in a state where the airbag housing 200 and the functional part 600 are spaced apart from each other due to the difference in length, and the rack gear 730 may be simultaneously coupled to the first bracket 610 , the second bracket 220 , and the airbag housing 200 to move the airbag housing 200 and the functional unit 600 during operation.

Through this, there is an effect that the airbag cushion 300 can be deployed to the front of the passenger by avoiding the functional unit 600 when deployed.

Although shown and described in relation to specific embodiments of the invention, it is common in the art that the present invention can be variously improved and changed without departing from the spirit of the present invention provided by the following claims. It will be self-evident to those who have the knowledge of

10: prediction unit 11: camera sensor
12: radar sensor 13: ultrasonic sensor
14: lidar sensor 20: control unit
30: sensing unit 100: steering wheel
110: rim 120: amateur
200: airbag housing 210: protrusion
220: second bracket 300: airbag cushion
400: gas injection device 500: housing cover
600: function part 610: first bracket
700: actuator 710: drive motor
720: pinion gear 730: rack gear
800: rail

Claims (13)

an airbag housing positioned at the rear of the steering wheel in which the functional part is provided in the center of the rim and having an open upper surface;
an actuator for sliding the airbag housing in a forward and backward direction of the steering wheel;
an airbag cushion accommodated in the airbag housing, deployed in a state in which the airbag housing is slid forward of the steering wheel, and inflated forward of the steering wheel through a space between the functional unit and the rim of the steering wheel;
a predictor for predicting a vehicle collision; and
A driver's seat airbag system for a vehicle comprising: a control unit that controls the actuator to slide the airbag housing forward of the steering wheel when the prediction unit predicts a collision of the vehicle. The method according to claim 1,
The prediction unit is connected to a camera sensor, a radar sensor, an ultrasonic sensor, or a lidar sensor to predict a vehicle collision. The method according to claim 1,
a gas injection device connected to the lower portion of the airbag cushion to inject gas into the airbag cushion; and
It further includes; a sensing unit for detecting the collision of the vehicle;
The control unit controls the gas injection device when the sensing unit detects a collision of the vehicle to deploy the airbag cushion. 4. The method of claim 3,
The control unit controls the actuator to slide the airbag housing toward the rear of the steering wheel when a collision of the vehicle is not detected for a predetermined time by the sensing unit in a state in which the airbag housing is slid forward of the steering wheel. . The method according to claim 1,
The driver's seat airbag further comprising a housing cover coupled to the airbag housing so as to cover the opening of the airbag housing and opening the airbag housing at a limited angle toward the front of the steering wheel while being damaged by the deployment pressure of the airbag cushion. system. 6. The method of claim 5,
The opening of the airbag housing is opened above the steering wheel,
A driver's seat airbag system for a vehicle, characterized in that the housing cover is rotated with respect to the airbag housing so that the front end is moved upward, thereby opening the airbag housing toward the front of the steering wheel. 6. The method of claim 5,
The rear end of the housing cover extends further rearward along the front-rear direction of the steering wheel than the rear end of the airbag housing,
A protruding protrusion is formed on the rear side of the airbag housing,
The rear end of the housing cover is in contact with the protrusion as the housing cover is rotated with respect to the airbag housing, thereby preventing the rotation of the housing cover. 6. The method of claim 5,
A driver's seat airbag system for a vehicle, characterized in that the housing cover is in contact with the rim as the front end is rotated upward based on the rear end of the airbag housing in a state in which the airbag housing is slid forward of the steering wheel, thereby preventing the rotation of the housing cover. The method according to claim 1,
A driver's seat airbag system for a vehicle, characterized in that the steering wheel is provided at the center of the steering wheel and is coupled to the rim through a connection part and an armature provided with a mounting space is formed, and the airbag housing is slidably coupled to the armature and slid by an actuator. The method according to claim 1,
The actuator includes a driving motor coupled to the steering wheel and driven to rotate the rotating shaft, a pinion gear coupled to the rotating shaft of the driving motor to rotate, and an airbag housing coupled to the pinion gear and extending in the forward and backward directions of the steering wheel to rotate the pinion gear A driver's seat airbag system for a vehicle, characterized in that it includes a rack gear for sliding the airbag housing in accordance with the present invention. 11. The method of claim 10,
and a rail coupled to the steering wheel and slidably coupled to the rack gear. 11. The method of claim 10,
a first bracket coupled to the rear of the functional part and extending to the rear of the steering wheel to connect the functional part and the steering wheel; and
A second bracket coupled to the airbag housing and extending to the rear of the steering wheel to connect the airbag housing and the steering wheel in a state where the functional part and the airbag housing are spaced apart;
The rack gear is integrally coupled to the first bracket and the second bracket so that the functional part and the airbag housing slide at the same time when the driving motor is operated. The method according to claim 1,
The driver's seat airbag device for a vehicle, characterized in that the functional part located at the center of the steering wheel is a display device mounted on the steering wheel.

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