KR102819191B1 - Driver airbag system - Google Patents

Abstract

According to the present invention, a driver's seat airbag system for a vehicle is introduced, which includes: an airbag housing positioned at the rear of a steering wheel having a functional portion provided at the center of a rim and having an open upper surface; an actuator for sliding the airbag housing in the forward-backward direction of the steering wheel; an airbag cushion accommodated inside the airbag housing and expanded forward of the steering wheel through a gap between the functional portion and the rim of the steering wheel when the airbag housing is slid forward of the steering wheel; a prediction portion for predicting a vehicle collision; and a control portion for controlling the actuator to slide the airbag housing forward of the steering wheel when the prediction portion predicts a vehicle collision.

Description

DRIVER AIRBAG SYSTEM

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

To protect the safety of vehicle occupants, vehicles are equipped with various types of airbags, among which the driver's airbag is installed on the steering wheel.

The driver's seat airbag device receives a control signal from the airbag control unit, and when the inflator explodes, the airbag cushion protrudes from the steering wheel and deploys toward the driver due to the pressure of the airbag gas injected from the inflator, so that the driver's upper body is protected by the deployed airbag cushion.

Meanwhile, when autonomous driving situations where the vehicle finds its destination on its own without the driver directly operating the steering wheel, accelerator pedal, and brakes are universally realized, the driver can select a relaxation mode while driving the vehicle in which he or she does not drive directly and can rest, and a display device may be installed on the steering wheel to allow the driver to rest comfortably in the relaxation mode.

However, the driver's airbag cushion is supposed to deploy toward the driver while protruding in front of the display device in the event of an accident. However, there was a problem in that if it deploys while damaging the display device, the driver could be injured by the flying display device.

To solve this problem, a structure has been developed that avoids the display device when deploying the airbag cushion, but it has been difficult to deploy the airbag cushion in the desired direction.

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

KR 10-2012-0044831 A

The present invention has been proposed to solve such problems, and is intended to provide an airbag device that restricts the direction of deployment of an airbag cushion by sliding an airbag housing forward of a steering wheel so that the housing cover comes into contact with the steering wheel when opened.

A driver's seat airbag system according to the present invention comprises: an airbag housing positioned at the rear of a steering wheel having a functional portion provided at the center of a rim and having an open upper surface; an actuator for sliding the airbag housing in the forward-backward direction of the steering wheel; an airbag cushion accommodated inside the airbag housing and expanded forward of the steering wheel through a gap between the functional portion and the rim of the steering wheel when the airbag housing is slid forward of the steering wheel; a prediction unit 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 a vehicle collision.

The prediction unit can be connected to camera sensors, radar sensors, ultrasonic sensors or lidar sensors to predict vehicle collisions.

The airbag cushion further includes a gas injection device connected to the lower part of the airbag cushion and injecting gas into the interior of the airbag cushion; and a detection unit detecting a collision of the vehicle; and the control unit can control the gas injection device to deploy the airbag cushion when the detection unit detects a collision of the vehicle.

The control unit can control the actuator to slide the airbag housing toward the rear of the steering wheel if the detection unit does not detect a collision with the vehicle for a preset period of time while the airbag housing is slid toward the front of the steering wheel.

It further includes a housing cover which is coupled to the airbag housing to cover an opening of the airbag housing and opens the airbag housing at a limited angle toward the front of the steering wheel when broken by the deployment pressure of the airbag cushion.

The opening of the airbag housing opens upwardly toward the steering wheel, and the housing cover rotates relative to the airbag housing so that the front end moves upward, thereby opening the airbag housing toward the front of the steering wheel.

The housing cover has a rear end that extends further rearward in the forward/backward direction of the steering wheel than the rear end of the airbag housing, and a protruding projection is formed on the rear side of the airbag housing. The rear end of the housing cover can prevent rotation of the housing cover by coming into contact with the projection as the housing cover rotates relative to the airbag housing.

The housing cover can be prevented from rotating by contacting the rim as the front end of the airbag housing rotates upward relative to the rear end of the airbag housing while the airbag housing is slid forward of the steering wheel.

The steering wheel is provided with an armature that is provided at the center of the steering wheel and is connected to the rim through a connecting portion and has a mounting space, and the airbag housing is slidably connected to the armature and can be slid by an actuator.

The actuator may include a drive motor coupled to the steering wheel and driven to rotate a rotation shaft, a pinion gear coupled to the rotation shaft of the drive motor and rotated, and a rack gear coupled to the airbag housing, meshed with the pinion gear, and extending in the forward/backward direction of the steering wheel to slide the airbag housing according to the rotation of the pinion gear.

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 unit and extending rearwardly of the steering wheel to connect the functional unit and the steering wheel; and a second bracket coupled to the airbag housing and extending rearwardly of the steering wheel to connect the airbag housing and the steering wheel while the functional unit and the airbag housing are spaced apart from each other; further comprising: a rack gear integrally coupled to the first bracket and the second bracket so that the functional unit and the airbag housing can slide simultaneously when the driving motor is operated.

The functional unit located in 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 forward of the steering wheel, then deploys the airbag cushion and induces the airbag cushion to deploy between the steering wheel and the functional part, thereby preventing damage or flying of the functional part when the airbag cushion deploys.

In addition, as the airbag housing moves forward of the steering wheel, the housing cover is fixed in contact with the steering wheel when opened, and when the airbag cushion is deployed, the rear part is supported by the housing cover, thereby preventing the airbag from being deployed backward of the steering wheel.

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

Specific structural and functional descriptions of the embodiments of the present invention disclosed in this specification or application are merely illustrative for the purpose of explaining the embodiments according to the present invention, and the embodiments according to the present invention may be implemented in various forms and should not be construed as limited to the embodiments described in this specification or application.

Since the embodiments according to the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in this specification or application. However, this is not intended to limit the embodiments according to the concept of the present invention to specific disclosed forms, but should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention.

The terms first and/or second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are only intended to distinguish one component from another, for example, without departing from the scope of the invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

When it is said that an element is "connected" or "connected" to another element, it should be understood that it may be directly connected or connected to that other element, but that there may be other elements in between. On the other hand, when it is said that an element is "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Other expressions that describe the relationship between elements, such as "between" and "directly between" or "adjacent to" and "directly adjacent to", should be interpreted similarly.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. It should be understood that, as used herein, the terms "comprises" or "has" and the like are intended to specify the presence of a feature, number, step, operation, component, part, or combination thereof implemented, but do not exclude in advance the presence or possibility of adding one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms defined in commonly used dictionaries, such as those defined in common dictionaries, should be interpreted as having a meaning consistent with the meaning they have in the context of the relevant art, and shall not be interpreted in an idealized or overly formal sense unless expressly defined herein.

Hereinafter, the present invention will be described in detail by describing preferred embodiments of the present invention with reference to the attached drawings. The same reference numerals presented in each drawing represent the same components.

The prediction unit (10), the control unit (20), and the detection unit (30) according to an exemplary embodiment of the present invention may be implemented through a nonvolatile memory (not shown) configured to store data regarding an algorithm configured to control operations of various components of a vehicle or software instructions for reproducing the algorithm, and a processor (not shown) configured to perform the operations described below using the data stored in the memory. Here, the memory and the processor may be implemented as separate chips. Alternatively, the memory and the processor may be implemented as a single chip integrated with each other. The processor may take the form of one or more processors.

FIG. 1 is an exploded and assembled perspective view of a functional part (600), an airbag housing (200), and a steering wheel (100) of a driver's 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, FIG. 3 is a side cross-sectional view illustrating the operation of a driver's airbag system according to an embodiment of the present invention, FIG. 4 is a cross-sectional view illustrating the operation of an actuator (700) in a driver's airbag system according to an embodiment of the present invention, FIG. 5 is a cross-sectional view of a portion in which an actuator (700) is connected to an airbag housing (200) and an armature (120) in a driver's airbag system according to an embodiment of the present invention, FIG. 6 is a perspective view of an actuator (700) and a rail (800) in a driver's airbag system according to an embodiment of the present invention, and FIG. 7 is a configuration diagram of a driver's airbag system according to an embodiment of the present invention.

Let us learn about a preferred embodiment of a driver's seat airbag system according to the present invention with reference to the drawings illustrated in FIGS. 1 to 7.

A driver's seat airbag system according to the present invention comprises: an airbag housing (200) positioned at the rear of a steering wheel (100) having a functional portion (600) provided at the center of a rim (110) and having an open upper surface; an actuator (700) that slides the airbag housing (200) in the forward-backward direction of the steering wheel (100); an airbag cushion (300) that is accommodated inside the airbag housing (200) and is deployed while the airbag housing (200) is slid forward of the steering wheel (100) and inflates forward of the steering wheel (100) through the functional portion (600) and the rim (110) of the steering wheel (100); a prediction portion (10) that predicts a collision of a vehicle; and a control unit (20) that controls an actuator (700) to slide the airbag housing (200) forward of the steering wheel (100) when predicting a collision of the vehicle in the prediction unit (10).

The steering wheel (100) may mean a rim (110) coupled with a functional portion (600) so as to surround the functional portion (600) located at the center from the outside. In addition, as described below, an armature (120) fixed to the steering wheel (100) may be coupled to the rear of the steering wheel (100).

The functional unit (600) is positioned at the center of the steering wheel (100), so that the airbag cushion (300) positioned at the rear of the steering wheel (100) can be deployed toward the front of the steering wheel (100) while avoiding the functional unit (600). Accordingly, the deployment pressure of the airbag cushion (300) is prevented from being applied to the functional unit (600), thereby preventing damage to the functional unit (600) or flying resulting therefrom.

The functional unit (600) located at the center of the steering wheel (100) according to one 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 the driver's infotainment, and may also display screens for vehicle status or navigation, etc.

In another embodiment, the functional unit (600) may be an emblem or an emblem equipped with a lighting device mounted on the steering wheel (100).

The airbag housing (200) can be mounted at the rear of the steering wheel. 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), so that it can be mounted at the rear of the steering wheel (100). In particular, the airbag housing (200) can be positioned at the rear of the functional unit (600) provided at the center of the steering wheel (100).

In one embodiment, the airbag housing (200) may be a container with an opening formed at the top, and in one embodiment, may be a rectangular parallelepiped shape with the upper surface removed.

The airbag cushion (300) can be stored inside the airbag housing (200), and when gas is injected inside, it can be deployed forward of the steering wheel (100) through between an obstacle and the steering wheel (100). In particular, the airbag cushion (300) can be deployed outside the airbag housing (200) through an opening of the airbag housing (200).

The airbag housing (200) can be slidably coupled with the functional part (600) in the forward and backward direction of the steering wheel (100), and the actuator (700) is connected between the airbag housing (200) and the steering wheel (100) to allow the airbag housing (200) and the functional part (600) to slide in the forward and backward 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 positioned forward of the rim (110) of the steering wheel (100), so that when the airbag cushion (300) is deployed, it does not hit the functional part (600) and can be deployed forward of the passenger between the rim (110) and the functional part (600).

The prediction unit (10) predicts a collision of the vehicle, and when the prediction unit (10) predicts a collision of the vehicle, the control unit (20) connected to the actuator (700) can operate the actuator (700) to slide a part of the airbag housing (200) toward the front of the steering wheel (100).

The airbag cushion (300) is deployed upwards when the actuator (700) slides the airbag housing (200) toward the front of the steering wheel (100) and is positioned in front of the driver between the functional part (600) and the rim (110) of the steering wheel (100), thereby protecting the front of the driver and preventing the driver from colliding with the steering wheel (100).

This has the effect of preventing the airbag cushion (300) from being deployed toward the rear of the steering wheel (100) when deployed, and also has the effect of preventing the functional part (600) from flying away or being damaged due to the collision between the functional part (600) and the airbag cushion (300) caused by the deployment pressure of the airbag cushion (300).

The prediction unit (10) can be connected to a camera sensor (11), a radar sensor (12), an ultrasonic sensor (13), or a lidar sensor (14) to predict a vehicle collision.

The prediction unit (10) is connected to a camera sensor (11), radar sensor (12), ultrasonic sensor (13) or lidar sensor (14) mounted on a vehicle to detect external vehicles or external obstacles, measure TTC (Time to Collision) and predict collisions between the vehicle and external vehicles or external obstacles.

The system further includes a gas injection device (400) connected to the lower portion of the airbag cushion (300) to inject gas into the interior of the airbag cushion (300); and a detection unit (30) for detecting a collision of the vehicle; and the control unit (20) can control the gas injection device (400) to deploy the airbag cushion (300) when the detection unit (30) detects a collision of the vehicle.

The gas injection device (400) is connected to the lower part of the airbag cushion (300) and can 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), and the detection unit (30) is connected to the collision detection sensor, so that when a collision of the vehicle is detected, the control unit (20) can operate the gas injection device (400) to deploy the airbag cushion (300).

Accordingly, a collision of the vehicle is detected, and the airbag cushion (300) is deployed simultaneously with the detection to protect the front of the driver.

The control unit (20) can control the actuator (700) to slide the airbag housing (200) to the rear of the steering wheel (100) if the detection unit (30) does not detect a collision of the vehicle for a preset time while the airbag housing (200) is slid forward of the steering wheel (100).

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

Through this, in normal driving conditions where there is no risk of vehicle collision, the marketability of the steering wheel (100) is improved as the airbag housing (200) is located at the rear of the steering wheel (100), and only in situations where the airbag cushion (300) should be deployed when a vehicle collision is expected, the airbag housing (200) slides forward and the airbag cushion (300) deploys to protect passengers, thereby improving safety.

It further includes a housing cover (500) that is coupled to the airbag housing (200) to cover the opening of the airbag housing (200) and opens the airbag housing (200) at a limited angle toward the front of the steering wheel (100) when broken by the deployment pressure of the airbag cushion (300).

As shown in Fig. 3, the upper part of the airbag housing (200) is open, and the housing cover (500) covers the upper part of the airbag housing (200) and can be combined with the airbag housing (200), and when the airbag cushion (300) is deployed by injecting gas from the gas injection device (400), the housing cover (500) can be opened and deployed.

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

The opening of the airbag housing (200) is opened upward of the steering wheel (100), and the housing cover (500) is rotated relative to the airbag housing (200) so that the front end moves upward, thereby opening the airbag housing (200) toward the front of the steering wheel (100).

Specifically, the housing cover (500) can open the opening of the airbag housing (200) by rotating based on the airbag housing (200), and in particular, can open the opening of the airbag housing (200) toward the front of the steering wheel (100). Accordingly, the airbag cushion (300) can be induced to be deployed toward the front of the steering wheel (100).

Accordingly, the housing cover (500) can induce the airbag cushion (300) to rotate toward the front of the steering wheel (100) by opening the opening of the airbag housing (200) that is open upwards at a limited angle toward the front of the steering wheel (100) without completely opening it.

The opening of the airbag housing (200) is opened upward of the steering wheel (100), and the housing cover (500) is rotated relative to the airbag housing (200) so that the front end moves upward, thereby opening the airbag housing (200) toward the front of the steering wheel (100).

The housing cover (500) can be rotated relative to the airbag housing (200) in a direction in which the front end moves upward. In one embodiment, the housing cover (500) can be rotated in a direction in which the front end moves upward by having the rear end 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, so that the front end can rotate in the direction of moving upward relative to the airbag housing (200), and the rear end can rotate in the direction of moving downward.

The housing cover (500) has a rear end that extends further rearward in the forward/backward direction of the steering wheel (100) than the rear end of the airbag housing (200), and a protruding projection (210) is formed on the rear side of the airbag housing (200). As the housing cover (500) rotates relative to the airbag housing (200), the rear end of the housing cover (500) comes into contact with the protrusion (210), thereby preventing the housing cover (500) from rotating.

As the front end of the housing cover (500) rotates with respect to the airbag housing (200) in a direction in which it moves upward, the rear end of the housing cover (500), which extends further rearward than the rear end of the airbag housing (200), can move downward.

The rear end of the housing cover (500) moved downward can be prevented from further rotating with respect to the airbag housing (200) by contacting the protrusion (210) formed in the airbag housing (200). In other words, the front end of the housing cover (500) can be prevented from further moving upward. Accordingly, the housing cover (500) can be prevented from rotating at a limited angle toward the front of the steering wheel (100).

The housing cover (500) can prevent rotation of the housing cover (500) by contacting the rim (110) as the front end rotates upward relative to the rear end of the airbag housing (200) while the airbag housing (200) is slid forward of the steering wheel (100).

As shown in Fig. 3, the housing cover (500) is opened when the front end rotates upward due to the deployment pressure of the airbag cushion (300) when the airbag housing (200) slides forward of the steering wheel (100) and the airbag cushion (300) is deployed, and the opening angle may be limited when the front end comes into contact with the steering wheel (100).

This has the effect of supporting the rear of the airbag cushion (300) and preventing the front end from being deployed toward the rear of the steering wheel (100).

The steering wheel (100) is provided with an armature (120) that is provided at the center of the steering wheel (100) and is connected to a rim (110) through a connecting portion and has a mounting space, and the airbag housing (200) is slidably connected to the armature (120) and can be slid by an actuator (700).

As illustrated in FIG. 1, an airbag housing (200) can be coupled to an armature (120) coupled with a rim (110) of a steering wheel (100), and the airbag housing (200) can slide forward or backward of the steering wheel (100) while being coupled to the armature (120).

An actuator (700) for sliding an airbag housing (200) may include a driving motor (710) coupled to an armature (120) and driven to rotate a rotational shaft, a pinion gear (720) coupled to the rotational shaft of the driving motor (710) and rotated, and a rack gear (730) coupled to the airbag housing (200), meshed with the pinion gear (720), and extending in the forward/backward direction of the steering wheel (100) to slide the airbag housing (200) according to the rotation of the pinion gear (720).

The actuator (700) is connected to the driving motor (710) by the control unit (20) to control the rotation of the driving motor (710), the pinion gear (720) is connected to the rotational axis of the driving motor (710) to rotate, and the rack gear (730) meshes with the pinion gear (720) and is coupled to the airbag housing (200) to slide the airbag housing (200) forward and backward according to the rotational direction of the pinion gear (720).

The actuator (700) may be formed of a driving motor (710), a pinion gear (720), and a rack gear (730), as well as other configurations.

It further includes a rail (800) coupled to the steering wheel (100) and slidably coupled to the rack gear (730).

The rail (800) extends in the forward and backward direction of the steering wheel (100) and is connected to the armature (120). A rack gear (730) is inserted inside so as to be able to slide. A pinion gear (720) is inserted on the upper side so that the pinion gear (720) and the rack gear (730) mesh with each other, thereby providing the effect of stably sliding the airbag housing (200).

The invention further includes a first bracket (610) that is coupled to the rear of the functional unit (600) and extends to the rear of the steering wheel (100) to connect the functional unit (600) and the steering wheel (100); and a second bracket (220) that is coupled to the airbag housing (200) and extends to the rear of the steering wheel (100) to connect the airbag housing (200) and the steering wheel (100) while the functional unit (600) and the airbag housing (200) are spaced apart from each other, and a rack gear (730) that is integrally coupled to the first bracket (610) and the second bracket (220) so that the functional unit (600) and the airbag housing (200) can slide simultaneously when the driving motor (710) is operated.

The first bracket (610) and the second bracket (220) are connected 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) is connected to the first bracket (610), the second bracket (220) and the airbag housing (200) simultaneously so that the airbag housing (200) and the functional part (600) can be moved when in operation.

Through this, the airbag cushion (300) can be deployed in front of the passenger while avoiding the functional part (600).

While the present invention has been illustrated and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that the present invention may be variously improved and modified without departing from the technical spirit of the invention as defined by the following claims.

10: Prediction section 11: Camera sensor
12: Radar sensor 13: Ultrasonic sensor
14: Lidar sensor 20: Control unit
30 : Sensor 100 : Steering wheel
110 : Rim 120 : Amateur
200 : Airbag housing 210 : Protrusion
220: 2nd bracket 300: Airbag cushion
400 : Gas injection device 500 : Housing cover
600: Functional part 610: 1st bracket
700 : Actuator 710 : Driving motor
720: Pinion gear 730: Rack gear
800 : Rail

Claims (13)

An airbag housing located at the rear of the steering wheel with a functional section in the center of the rim and having an open upper surface;
An actuator that slides the airbag housing in the forward and backward direction of the steering wheel;
An airbag cushion that is housed inside an airbag housing and is deployed while the airbag housing is slid forward of the steering wheel, and expands forward of the steering wheel through the space between the functional portion and the rim of the steering wheel;
A prediction unit for predicting a vehicle collision; and
A driver's airbag system for a vehicle, comprising: a control unit for controlling an actuator to slide an airbag housing toward the front of a steering wheel when a collision of a vehicle is predicted in a prediction unit; In claim 1,
A driver's seat airbag system for a vehicle characterized in that the prediction unit is connected to a camera sensor, a radar sensor, an ultrasonic sensor or a lidar sensor to predict a collision of the vehicle. In claim 1,
A gas injection device connected to the lower part of the airbag cushion and injecting gas into the interior of the airbag cushion; and
Further comprising a detection unit for detecting a collision of the vehicle;
A driver's seat airbag system for a vehicle, characterized in that the control unit controls the gas injection device to deploy the airbag cushion when the detection unit detects a collision of the vehicle. In claim 3,
A driver's seat airbag system for a vehicle, characterized in that the control unit controls the actuator to slide the airbag housing toward the rear of the steering wheel if the detection unit does not detect a collision with the vehicle for a preset period of time while the airbag housing is slid toward the front of the steering wheel. In claim 1,
A driver's seat airbag system for a vehicle, characterized in that it further includes a housing cover which is coupled to the airbag housing to cover an opening of the airbag housing and opens the airbag housing at a limited angle toward the front of the steering wheel when broken by the deployment pressure of the airbag cushion. In claim 5,
The opening of the airbag housing opens upwards toward the steering wheel,
A driver's seat airbag system for a vehicle, characterized in that the housing cover rotates relative to the airbag housing so that the front end moves upward, thereby opening the airbag housing toward the front of the steering wheel. In claim 5,
The housing cover extends further rearward in the forward/backward direction of the steering wheel than the rear end of the airbag housing.
A protruding projection is formed on the rear side of the airbag housing.
A driver's seat airbag system for a vehicle, characterized in that the rear end of the housing cover contacts the protrusion as the housing cover rotates relative to the airbag housing, thereby preventing the rotation of the housing cover. In claim 5,
A driver's seat airbag system for a vehicle, characterized in that the housing cover is prevented from rotating by contacting the rim as the front end of the airbag housing rotates upward relative to the rear end of the airbag housing while the airbag housing is slid forward of the steering wheel. In 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, has an armature that is connected to the rim through a connecting portion and has a mounting space, and an airbag housing is slidably connected to the armature and is slid by an actuator. In claim 1,
A driver's seat airbag system for a vehicle, characterized in that the actuator includes a drive motor coupled to a steering wheel and driven to rotate a rotational shaft, a pinion gear coupled to the rotational shaft of the drive motor and rotated, and a rack gear coupled to an airbag housing, meshed with the pinion gear, and extending in the forward-backward direction of the steering wheel to slide the airbag housing according to the rotation of the pinion gear. In claim 10,
A driver's seat airbag system for a vehicle, further comprising: a rail coupled to a steering wheel and slidably coupled to a rack gear; In claim 10,
A first bracket coupled to the rear of the functional unit and extending to the rear of the steering wheel to connect the functional unit and the steering wheel; and
Further comprising a second bracket which is coupled to the airbag housing and extends rearwardly from the steering wheel, connecting the airbag housing and the steering wheel with the functional portion and the airbag housing separated from each other;
A driver's seat airbag system for a vehicle, characterized in that the rack gear is integrally connected to the first bracket and the second bracket so that the functional part and the airbag housing slide simultaneously when the driving motor is operated. In claim 1,
A driver's airbag system for a vehicle, characterized in that the functional unit located in the center of the steering wheel is a display device mounted on the steering wheel.

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