KR101766848B1 - Airbag apparatus for vehicle - Google Patents

Airbag apparatus for vehicle Download PDF

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Publication number
KR101766848B1
KR101766848B1 KR1020160020409A KR20160020409A KR101766848B1 KR 101766848 B1 KR101766848 B1 KR 101766848B1 KR 1020160020409 A KR1020160020409 A KR 1020160020409A KR 20160020409 A KR20160020409 A KR 20160020409A KR 101766848 B1 KR101766848 B1 KR 101766848B1
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KR
South Korea
Prior art keywords
airbag
panel
passenger
front panel
head
Prior art date
Application number
KR1020160020409A
Other languages
Korean (ko)
Inventor
이성우
김동영
Original Assignee
아우토리브 디벨롭먼트 아베
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Priority to KR1020160020409A priority Critical patent/KR101766848B1/en
Application granted granted Critical
Publication of KR101766848B1 publication Critical patent/KR101766848B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/203—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/203—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns
    • B60R21/2035—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns using modules containing inflator, bag and cover attachable to the steering wheel as a complete sub-unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R21/0134—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to imminent contact with an obstacle, e.g. using radar systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/215—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/215—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member
    • B60R21/2165—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member characterised by a tear line for defining a deployment opening
    • B60R21/21656—Steering wheel covers or similar cup-shaped covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R2021/0002—Type of accident
    • B60R2021/0004—Frontal collision
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers
    • B60R2021/23382—Internal tether means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Air Bags (AREA)

Abstract

The present invention relates to an airbag apparatus for a vehicle, comprising: an airbag including a front panel toward a passenger and a rear panel facing the front panel in expansion; and a head accommodating unit for preventing movement of the head of the passenger in a direction that a front eccentric collision occurs and impact is applied to an outer portion of the front surface of the vehicle along the width direction of the vehicle by concavely limiting the head accommodating groove at one portion of the front panel when the airbag expands. With this composition, in case of vehicle collision in the front eccentric direction, the head of the passenger is prevented from being rotated toward the colliding side such that damage to the head and neck of the passenger can be effectively reduced.

Description

AIRBAG APPARATUS FOR VEHICLE

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an airbag device of an automobile which expands and expands toward a passenger in the event of a frontal collision of the automobile to protect the passenger.

The airbag is a typical safety device with the seatbelt of the vehicle. The airbag includes a driver's seat airbag, a passenger's seat airbag, a side airbag, a curtain airbag, and the like.

The driver's seat airbag protects the driver in the event of a head-on collision. The driver's seat airbag is mounted inside the steering wheel of the vehicle and instantaneously expands when a constant impact is applied.

The passenger seat airbag is mounted inside the instrument panel of the vehicle and instantaneously expands when the vehicle collides, protecting the passenger side passenger.

Crash testing of automobiles equipped with such safety devices is essential. The vehicle crash test includes a frontal crash test and a side crash test. There are various crash tests in each country.

The vehicle frontal crash test is carried out by mounting a human body on the driver's and front passenger's side and evaluating the injury of the head, chest and throat when a frontal impact is applied to the obstacle at the test speed required for the test vehicle.

In September 2009, the National Highway Traffic Safety Administration (NHTSA) released a report investigating the fatalities for unprovoked passengers wearing a belt in front crashes.

The report concluded that the most deaths occurred in crashes involving poor structural engagement between collision partners such as cars, corners, sloping collisions or collisions with narrow objects after extreme severe collisions.

In response to these surveys, NHTSA began studying test methods to mitigate the risk of injuries associated with car crashes related to fragile structural problems. This study shows that the offset impact between a research moving deformable barrier (RMDB) and a car parked at 15 degrees is the result of vehicle crush, occupant kinematics, Of the risk of the accident. Recent studies have added additional oblique RMDB-to-vehicle crash tests.

When an impact is applied to the outside of the front of the automobile, the head of the passenger moves to the front and the collision side and enters the gap between the curtain airbag of the automobile and the frontal airbag, e.g., the driver's seat airbag, collides with the internal structure of the automobile, Which can cause serious damage to the product. The internal structure of the vehicle includes a side panel of the vehicle, a front pillar, an instrument panel, and the like.

United States Patent Publication No. 2014/0375032 United States Patent Publication No. US2012 / 0306187

SUMMARY OF THE INVENTION An object of the present invention is to provide an automotive airbag device capable of effectively preventing a collision obstacle from being eccentrically located on the front face of an automobile, particularly, on the outside of a front face of an automobile,

To achieve the above object, according to an embodiment of the present invention, there is provided an airbag device comprising: an airbag including a front panel facing a passenger and a rear panel facing the front panel when inflated; And an airbag for receiving the head portion of the passenger when an eccentric frontal collision occurs in which an impact is applied to an outer portion of the front side along the width direction of the automobile by recessing the head receiving groove in a part of the front panel at the time of inflating the airbag, There is provided an airbag device for an automobile including a head receiving unit for preventing a head portion of a passenger from protruding in a direction in which the eccentric front face is generated.

The head receiving unit includes an opening formed in the front panel; A cover panel covering the opening and folded into a wrinkled state when the airbag is not inflated; And at least one pulling member connected to the cover panel and the rear panel to pull the cover panel toward the rear panel upon inflation of the airbag.

The head receiving groove may include an inclined guide portion for guiding a head portion of a passenger colliding with the front panel of the airbag to the head receiving groove.

The inclined guide portion may be arranged to increase the length of the pulling member toward the center of the airbag.

Wherein the front panel has a plurality of folded corrugations formed between the pulling member and the edge of the airbag when the airbag inflates, The inflation thickness of the airbag toward the side of the automobile may be larger than the inflation thickness of the airbag toward the inside of the automobile.

The airbag may be received in a folded state at a central portion of the steering wheel so as to be in a stopped state with respect to the rotational motion of the steering wheel of the automobile.

According to the embodiment of the present invention, it is possible to prevent the head portion of the passenger from moving to the collision side during the eccentric frontal collision of the automobile, thereby preventing the head portion of the passenger from rotating to the gap between the curtain airbag and the front airbag. As a result, injuries to the head and neck of passengers can be reduced.

1 is a view showing the interior of a vehicle equipped with a steering wheel equipped with an airbag device according to an embodiment of the present invention.
2 is a cross-sectional view taken along line II-II in FIG.
3 is a plan view showing a state in which the airbag is fully opened in a non-deployed state according to an embodiment of the present invention.
4 is a cross-sectional view taken along line IV-IV in FIG.
Fig. 5 is a sectional view showing the inflated state of the airbag of Fig. 4;
6 is a cross-sectional view showing the configuration of an airbag of an automobile according to another embodiment of the present invention.
Fig. 7 is a sectional view showing the airbag in the inflated state of Fig. 6; Fig.
8 is a cross-sectional view showing the configuration of an airbag of an automobile according to another embodiment of the present invention.
Fig. 9 is a sectional view showing the inflated state of the airbag of Fig. 8; Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It will be apparent to those skilled in the art that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to let you know.

BACKGROUND OF THE INVENTION Airbag devices are widely used to reduce or minimize injury to passengers in the event of a vehicle collision. The airbag device may be installed at various locations within the vehicle. According to one embodiment of the present invention, the airbag apparatus is installed on the driver's seat side steering wheel. In another embodiment of the present invention, the airbag device may be installed in the front passenger side instrument panel.

FIG. 1 is a view showing an interior of a vehicle equipped with a steering wheel 10 according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II in FIG.

Referring to Figs. 1 and 2, an airbag apparatus 30 is housed inside the center of the steering wheel 10. Fig.

The steering wheel 10 is connected to the steering wheel hub 11 by means of a cup-shaped steering wheel hub 11, a plurality of steering wheel spokes 13 extending from the steering wheel hub 11 and a steering wheel spoke 13, And a steering wheel rim 15 surrounded by a foam member. A sleeve 12 is formed at the lower end of the steering wheel hub 11 so as to fit into the steering column 20 along the direction of the central axis A of the steering wheel hub 11.

The airbag device 30 includes an inflator 31 for generating gas, a housing 34 having a base portion on which the inflator 31 is supported, an airbag 100 housed in the folded state in the housing 34, And a cover member (37) covering the cover member (37). The airbag device 30 includes a frontal collision detection sensor 47 for detecting a frontal collision and a controller 43 for receiving a collision signal from the frontal collision detection sensor 47 and outputting a signal for driving the inflator 31 can do.

The airbag 100 includes a head receiving unit 200 for receiving a head portion of a passenger so as to prevent the head portion of the passenger from moving toward the impact side during a frontal impact of the automobile, particularly, in an eccentric frontal crash. The head receiving unit 200 is configured such that, in an eccentric frontal collision of the automobile, the head of the passenger moves to the collision side and protrudes into a gap between the inflated air bag 100 and a curtain air bag (not shown) To reduce the head and neck injuries of passengers.

According to the embodiment of the present invention, even if the steering wheel 10 is suddenly rotated by the driver in the event of a vehicle collision, the airbag device 30 is disposed at a predetermined position without being rotated at the center of the steering wheel 10. [ Therefore, the portion where the head receiving unit 200 of the airbag 100 is formed can always be disposed adjacent to the side surface of the automobile.

The eccentric frontal collision of the vehicle may include all cases where the collision obstacle is biased to one side of the vehicle and collides. That is, it may partially collide with left and right outside of the front of the automobile in the direction along the width direction of the automobile. Eccentric frontal collision may include frontal collision with no collision with the collision obstacle, or collision with the collision obstacle at an angle.

For example, an eccentric frontal impact may include impacting less than 40% of the outside of the front of the vehicle in the width direction of the vehicle, and may cause collision with the collision obstacle at an angle, e.g., less than 15 degrees .

An eccentric frontal collision is, for example, caused when the front left side of the car leans at a certain angle to the collision obstacle and a part of the front left side of the car overlaps with the collision obstacle (hereinafter referred to as " left side impact & And the like.

The eccentric frontal collision occurs when a frontal right side of the vehicle leans at a predetermined angle with respect to the collision obstacle and a part of the front right side of the automobile overlaps with the collision obstacle to cause an impact (hereinafter referred to as " right side impact & .

The airbag device of the present invention can be applied to a frontal collision state in which the impact is exerted on the entire front of the automobile or at least 40% of the front of the automobile, in addition to the eccentric frontal collision state where a partial impact is applied to the left and right outside of the front face of the automobile. Can also be useful. Pure frontal collision can be defined as a state in which the passenger moves less than a certain angle toward the side of the vehicle in the event of a collision.

3 is a cross-sectional view taken along line IV-IV in FIG. 3, and FIG. 5 is a cross-sectional view taken along the line IV-IV in FIG. Sectional view showing an expanded state.

3 to 5, the airbag 100 includes a front panel 110 facing the passenger and a rear panel 130 facing the front panel 110 when inflated. The front panel 110 and the rear panel 130 are joined to each other through the sewing line S1 to form an inner space into which gas can be injected.

The airbag (100) has a head receiving unit (200) for receiving a head of a passenger when inflated. The head receiving unit 200 includes an opening 111 formed in the front panel 110, a cover panel 210 covering the opening 111, and a pulling member 210, which is connected between the cover panel 210 and the rear panel 130, (230).

The opening 111 is biased to one side of the front panel 110 and formed, for example, in a quadrangle. The opening 111 can be formed into various shapes such as a circular shape and an elliptical shape.

The cover panel 210 is connected to the opening 111 of the front panel 111 through the sewing line S2 to close the opening 111. [ The cover panel 210 is formed to have an area larger than the size of the opening 111 and has at least one folded corrugation W when the airbag inflates.

The pulling member 230 is connected between the cover panel 210 and the rear panel 130 via sewing lines S3 and S4. The pulling member 230 may be a band-shaped member formed using the same material as the material of the airbag 100. In other embodiments, the pulling member 230 can have various shapes such as a string, a chain, and the like.

According to one embodiment of the present invention, the pulling member 230 has a width D across the opening 111 and both ends of the pulling member 230 along the direction of the width D thereof are connected by a sewing line S2 to the cover panel 210 To the front panel 110 of the airbag 100. In another embodiment, the width of the pulling member 230 may be smaller than the opening 111 and may be coupled only to the middle portion of the cover panel 210.

The pulling member 230 maintains the folded state between the cover panel 210 and the rear panel 130 when the airbag 100 is inflated and pulls the cover panel 210 when the airbag 100 is inflated. To the rear panel 130 side. As a result, the cover panel 210 forms a concave head receiving groove R toward the rear panel 130. [

The operation principle of the airbag apparatus constructed as described above will be described below.

Referring to FIGS. 1 and 2, when an impact is partially or wholly applied to the front of the automobile, the inflator 31 is operated in response to a signal from the frontal collision detection sensor 47. Hereinafter, an example will be described in which a shock is applied to the front left side of the automobile.

The gas generated by the operation of the inflator 31 is supplied into the inflated space defined between the front panel 110 and the rear panel 130 of the airbag 100 and the gas pressure supplied into the airbag 100 The member 37 ruptures. The airbag 100 is inflated and deployed toward the passenger through the rupture clearance of the cover member 37.

3 to 5, the pulling member 230 connected between the cover panel 210 and the rear panel 130 is pulled while the airbag 100 is inflated, (130). As a result, a concave key accepting groove R is formed in the opening 111 of the front panel 110 of the inflated airbag 100. The area of the cover panel 210 is formed larger than the size of the opening 111 so that the opening 111 can be sufficiently closed even if pulled toward the rear panel 130 by the pulling member 230.

The head portion H of the passenger moves to the left side while obliquely colliding with the center or center-left side of the front panel 110 of the inflated air bag 100. [ At this time, the friction between the head portion H of the passenger and the front panel 110 causes the head portion H of the passenger to move counterclockwise and to the left.

The head H of the passenger is inserted into the concave head receiving groove R formed in the opening 111 and received by the cover panel 210 to stop the movement and rotation to the left. As a result, the head H of the passenger is prevented from protruding into the gap between the inflated airbag 100 and the curtain airbag deployed downward along the inner side of the automobile, so that the head of the passenger is protected against the internal structure of the vehicle, Front pillars, instrument panels, etc. to prevent injury. Also, it is possible to prevent the head portion H of the passenger from being rotated by friction with the front panel 110 at an early stage, thereby reducing the neck injury of the passenger.

Referring to FIGS. 1 and 2, the headrest preventing unit 200 operating as described above can be aligned with the reference position with respect to the rotational movement of the steering wheel 10 due to a sudden force applied from the driver in response to an automobile collision. have.

This is because the steering wheel 10 is rotatably installed with respect to the steering column 20 and the structure in which the airbag device 30 is installed inside the center of the steering wheel 10 irrespective of the rotational motion of the steering wheel 10 Can be achieved.

For example, the housing 34 of the airbag device 30 is spaced apart from the steering wheel 10 and is fixedly connected to the steering column 20 so that the airbag device 30 Can be installed in a stationary state at a predetermined position.

With this configuration, the airbag 100 inflated and deployed from the center of the steering wheel 10 can be inflated and deployed in a predetermined posture. That is, the head receiving unit 200 disposed on one side of the airbag 100 may be disposed adjacent to the side of the automobile to prevent the head of the passenger from moving to the left side of the automobile.

According to another embodiment of the present invention, the head receiving unit 200 is additionally provided on the right side of the airbag 100 so as to receive a head of a passenger moving to the right side of the passenger due to a right impact applied to the automobile.

FIG. 6 is a sectional view showing the construction of an airbag of an automobile according to another embodiment of the present invention, and FIG. 7 is a sectional view showing the inflated state of the airbag of FIG.

Hereinafter, the same reference numerals are assigned to the same components as those of the above-described configuration, and redundant description is omitted.

6 and 7, the front panel 110 of the airbag 100 is formed with an opening 113 extending at least toward the center of the airbag 100 than the opening 111 described above.

The opening 113 is provided with a cover panel 211 for closing the opening 113 and the pulling member 230 is connected between the cover panel 211 and the rear panel 130. The pulling member 230 may include three pulling members 231, 233, 235, for example. The length L2 of the pulling member 233 is longer than the length L1 of the pulling member 231 and the length L3 of the pulling member 235 is longer than the length L2 of the pulling member 233. [ That is, a pulling member having a longer length toward the center of the airbag 100 is disposed.

The shape of the head receiving groove R defined by the cover panel 211 at the time of inflating the airbag 100 may have an inclined guide portion 211a extending toward the center of the airbag 100. [

The head H of the passenger who slides obliquely against the center or center left of the front panel 110 of the airbag 100 inflated through the inclined guide portion 211a can be inserted into the head receiving groove R while sliding smoothly have. With this configuration, the injury value of the neck of the passenger can be effectively reduced.

FIG. 8 is a cross-sectional view showing the configuration of an airbag of an automobile according to another embodiment of the present invention, and FIG. 9 is a sectional view of the airbag of FIG. 8 in an expanded state.

Hereinafter, the same reference numerals are assigned to the same components as those of the above-described configuration, and redundant description is omitted.

8 and 9, the lateral length of the front panel 110 of the airbag 100 is longer than the lateral length of the rear panel 130 so that the pulling member 230 and the airbag 100, when the airbag inflates, The front panel 110 is formed with the corrugation C1.

With this configuration, when the airbag is inflated, the outside inflation thickness T2 of the airbag 110 adjacent to the inside side surface of the automobile can be increased more than the inflation thickness T1 opposite thereto. Therefore, it is possible to more effectively prevent the head portion of the passenger inserted into the head receiving groove R defined by the head receiving unit 200 from moving to the side of the automobile, thereby enhancing the head protecting effect.

According to the embodiment of the present invention, even if the steering wheel 10 is suddenly rotated by a driver in the event of a vehicle collision, the steering wheel 10 is arranged at a predetermined position without being rotated at the center of the steering wheel 10. Therefore, the position of the head receiving groove R formed in the front panel 110 of the inflated air bag 100 is not changed, so that it is possible to perform an appropriate head movement preventing function.

Although the present invention has been described with reference to the accompanying drawings and the preferred embodiments described above, the present invention is not limited thereto but is limited by the following claims. Accordingly, those skilled in the art will appreciate that various modifications and changes may be made thereto without departing from the spirit of the following claims.

10: steering wheel 30: airbag device
100: air bag 110: front panel
130: rear panel 200: head restraint unit
210: cover panel 230: pulling member

Claims (6)

An airbag including a front panel facing the passenger at the time of inflation and a rear panel facing the front panel; And
When the airbag is inflated, a head receiving recess is recessed in a part of one side of the front panel to accommodate the head portion of the passenger when an eccentric frontal collision is applied to an outer side portion of the front side along the width direction of the automobile And a head receiving unit for preventing the head portion of the passenger from protruding in the direction in which the eccentric frontal impact occurs,
The head receiving unit includes:
The front panel An opening formed at a position offset from the center;
A cover panel folded into a wrinkled state of the airbag when the airbag is not inflated, the cover panel covering the opening and not smaller than the size of the opening; And
Wherein the cover panel has a predetermined length and is connected to the cover panel and the rear panel so that when the airbag inflates, the interval between the cover panel and the rear panel is smaller than the interval between the rear panel and the front panel, At least one pulling member pulling toward the side,
Wherein the cover panel is connected to the front panel with a sewing line extending along the periphery of the opening. delete The airbag device according to claim 1, wherein the head receiving groove includes an inclined guide portion for guiding a head portion of a passenger colliding with the front panel of the airbag to the head receiving groove. The airbag device according to claim 3, wherein the inclined guide portion is disposed so as to increase the length of the pulling member toward the center of the airbag. 2. The airbag according to claim 1, wherein a width of the front panel is longer than a width of the rear panel, and when the airbag inflates, the front panel, between the pulling member and the edge of the airbag, Wherein an inflation thickness of the airbag toward the side of the automobile when the airbag is inflated is formed larger than an inflated thickness of the airbag toward the inside of the automobile. The airbag device of an automobile according to claim 1, wherein the airbag is housed in a folded state at a central portion of the steering wheel so as to be in a stopped state with respect to rotational motion of the steering wheel of the automobile.

KR1020160020409A 2016-02-22 2016-02-22 Airbag apparatus for vehicle KR101766848B1 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016016730A (en) * 2014-07-08 2016-02-01 マツダ株式会社 Airbag device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016016730A (en) * 2014-07-08 2016-02-01 マツダ株式会社 Airbag device

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