KR20130129648A - Airbag apparatus - Google Patents

Airbag apparatus Download PDF

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Publication number
KR20130129648A
KR20130129648A KR1020120053678A KR20120053678A KR20130129648A KR 20130129648 A KR20130129648 A KR 20130129648A KR 1020120053678 A KR1020120053678 A KR 1020120053678A KR 20120053678 A KR20120053678 A KR 20120053678A KR 20130129648 A KR20130129648 A KR 20130129648A
Authority
KR
South Korea
Prior art keywords
vent hole
tether
airbag cushion
airbag
shielding member
Prior art date
Application number
KR1020120053678A
Other languages
Korean (ko)
Inventor
이석민
Original Assignee
현대모비스 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대모비스 주식회사 filed Critical 현대모비스 주식회사
Priority to KR1020120053678A priority Critical patent/KR20130129648A/en
Publication of KR20130129648A publication Critical patent/KR20130129648A/en

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Classifications

    • 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
    • B60R21/239—Inflatable members characterised by their venting means
    • 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
    • B60R21/239—Inflatable members characterised by their venting means
    • B60R2021/2395—Inflatable members characterised by their venting means comprising means to control the venting
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

An airbag device is provided to gradually discharge air through a vent hole from the inside of an airbag cushion to the outside by gradually adjusting the opening of the vent hole based on the expansion of the airbag cushion. For this, the air bag device by the embodiment of the present invention comprises an airbag cushion, a shielding member, and a tether. The airbag cushion expands when being injected with air and discharges the air through a vent hole formed on the airbag cushion. The shielding member shields the vent hole with one end arranged on the circumference of the vent hole to be joined to the airbag cushion and the other end arranged at the center of the vent hole. One end of the tether is joined to the other end of the shielding member to pull the other end of the shielding member in order to allow the shielding member to gradually open the vent hole. [Reference numerals] (50) Tether divider;(60) Controller

Description

AIRBAG APPARATUS

The present invention relates to an airbag apparatus, and more particularly to an airbag apparatus capable of adjusting the deployment pressure of the airbag cushion.

In general, the airbag device is a device that protects the passengers by the gas generated from the inflator flows into the airbag cushion in the event of an automobile accident, the airbag cushion is expanded and expanded by the gas.

Recently, after the passenger is loaded on the airbag cushion, the head and neck portions of the passenger are injured by excessive deployment pressure of the airbag cushion. In particular, in North America, laws on the merchandise of such airbag devices have been established and strictly evaluated whether the head and neck of the passenger are injured by the pressure of the airbag cushion.

Therefore, in the early stage of deployment of the airbag cushion, it prevents excessive discharge of gas to maintain the deployment pressure and promotes early deployment, and additionally discharges the gas at an appropriate time before and after the passenger is loaded onto the airbag cushion to injure the chest and chest of the passenger. There is a need for an airbag apparatus that can reduce injuries.

The problem to be solved by the present invention is to provide an airbag apparatus in which the opening size of the vent hole is gradually adjusted according to the expansion size of the airbag cushion so that the gas is gradually discharged through the vent hole without being discharged at once.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the airbag device according to an embodiment of the present invention, the airbag cushion is formed when the gas is inflated and the vented gas is discharged, the shielding the vent hole, once It is disposed along the circumference of the vent hole is coupled to the airbag cushion, the other end is a shielding member disposed in the center of the vent hole, and the shielding member to the other end of the shielding member to gradually open the vent hole One end is coupled to include a tether for pulling the other end of the shielding member.

The details of other embodiments are included in the detailed description and drawings.

In the airbag apparatus according to the present invention, since the size of the shielding member opening the vent hole is gradually adjusted according to the expansion size of the airbag cushion, the gas is gradually discharged through the vent hole without being discharged at once.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is a view showing an airbag apparatus according to an embodiment of the present invention,
2 is a view showing the configuration of the main part of the airbag apparatus according to an embodiment of the present invention,
3 is a cross-sectional view taken along line AA of FIG.
4 is an operation of the airbag apparatus according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, an airbag apparatus according to an embodiment of the present invention will be described with reference to the drawings.

1 is a view showing an airbag device according to an embodiment of the present invention, Figure 2 is a view showing the configuration of the main part of the airbag device according to an embodiment of the present invention, Figure 3 is a cross-sectional view taken along the line AA shown in FIG. 4 is an operation diagram of the airbag apparatus according to the embodiment of the present invention.

1 to 4, an airbag apparatus according to an embodiment of the present invention includes an airbag housing 10, an inflator 20, and an airbag cushion 30.

The airbag housing 10 accommodates the airbag cushion 30 and is coupled to the vehicle body.

The inflator 20 is fixed to the airbag housing 10 and connected to the airbag cushion 30. The inflator 20 generates gas in an automobile accident and supplies the gas to the airbag cushion 30.

The airbag cushion 30 is folded several times and stored in the airbag housing 10. When the gas generated from the inflator 20 flows in, the airbag cushion 30 expands and protects the passenger sitting in the passenger seat.

The airbag cushion 30 is made of three panels. That is, the airbag cushion 30 includes a main panel 32 in contact with the passenger, and side panels 34 respectively coupled to both sides of the main panel 32.

The side panel 34 is provided with a main vent hole 35 and a vent hole 36 through which the gas introduced into the airbag cushion 30 is discharged.

The airbag cushion 30 should not be excessively discharged so that the passenger's head may be loaded early when initially inflated, and additional gas may be added at an appropriate time before and after the upper body of the passenger is loaded into the airbag cushion 30. By discharging, the internal pressure of the airbag cushion 30 should be optimized to minimize the injury to the head, neck and chest of the passenger.

To this end, the airbag cushion 30 always opens the main vent hole 35 in a state in which the airbag cushion 30 is inflated to a predetermined size, and always discharges the gas inside through the opened main vent hole 35. Let's do it.

In addition, the airbag cushion 30 is coupled to the shield member 42 for shielding the vent hole (36). The shielding member 42 is spirally formed like a snail shell, so that one end thereof is disposed along the circumference of the vent hole 36 and coupled to the airbag cushion 30, and the other end is disposed at the center of the vent hole 36.

The shielding member 42 is a portion disposed along the circumference of the vent hole 36, one side is firmly stitched 43a to the airbag cushion 30 along the length, and the other portion overlaps both sides along the length. It is cut and sewn 43b and combined. The shielding member 42 is formed to have a width of about 10 mm except for both sides sewn, so that the shielding member 42 is not easily broken even when the shielding member 42 is pulled by the tether 44.

When the other end of the shielding member 42 disposed at the center of the vent hole 36 is pulled, the shielding member 42 is released from the center so that the venting hole 36 can be gradually opened, the shielding member 42 The sides are overlapped along the length so that the portion to be stitched 43b is sewn so that it can be easily released by the deployment pressure of the airbag cushion 30.

The other end of the shield member 42 is coupled to the tether 44. The tether 44 has one end coupled to the other end of the shielding member 42 so that the shielding member 42 can gradually open the vent hole 36, so that the airbag cushion 30 is inflated to a predetermined size. The other end of the shielding member 42 disposed at the center of the vent hole 36 may be pulled out. While the other end of the tether 44 in this embodiment is shown to be coupled to the tether separator 50 coupled to the airbag housing 10, the other end of the tether 44 is coupled to the airbag cushion 30 to airbag As the cushion 30 is inflated, it may become taut to pull the other end of the shielding member 42. Here, the tether separator 50 is coupled to the other end of the tether, and restrains or releases the tether 44 by the control signal of the controller 60.

The tether separator 50 is coupled to the airbag housing 10 at the outside of the airbag cushion 30 by holding the other end of the tether 44. Of course, the installation position of the tether separator 50 may be installed at a position capable of holding the other end of the tether 44 and performing a function of separating from the tether 44 by a control signal of the controller 60. For example, the tether separator 50 may be coupled to the airbag housing 10 inside the airbag cushion 30.

The tether separator 50 generates gas when the airbag cushion 30 is expanded to a predetermined size through a control signal of a controller 60 such as an airbag control unit (ACU) or an electronic control unit (ECU) and generates a gas. Can be broken. In this case, the controller 60 may load the upper body of the passenger into the airbag cushion 30 so that the tether separator 50 may be damaged while generating gas at an appropriate time before and after the upper body of the passenger is loaded into the airbag cushion 30. It is preferably set to send an explosion signal to the tether separator 50 at a suitable time before and after the end.

Alternatively, the controller 60 determines the type of the passenger sitting in the passenger seat through a signal of a passenger sensor (not shown) disposed in the passenger seat, so that the tether separator 50 may restrain or release the tether 44. Can be controlled.

For example, if it is determined that the passenger sitting in the passenger seat is an infant, the controller 60 controls the tether separator 50 not to be damaged, and thus the tether separator 50 continues to restrain the tether 44. Since the tether 44 pulls the shield member 42 when the airbag cushion 30 is inflated to a predetermined size, the vent member 36 is gradually opened while the shield member 42 is gradually released. Can be. As such, when the vent hole 36 is opened while the shielding member 42 is released, the airbag cushion 30 discharges gas through the main vent hole 35 and the vent hole 36, and thus the vent hole 36. ) Is shielded by the shielding member 42 so that the deployment pressure can be lowered as compared with the case where the gas is discharged only through the main vent hole 35.

In the opposite example, the controller 60 controls the tether separator 50 to be broken if it is determined that the passenger sitting in the passenger seat is an adult, and thus the tether separator 50 releases the tether 44, thereby causing the airbag cushion to be broken. Even if the 30 is inflated to a predetermined size, the shielding member 42 is not loosened so that the vent hole 36 is shielded. As such, when the shielding member 42 maintains the shielding state of the vent hole 36, since the airbag cushion 30 discharges gas only through the main vent hole 35, the airbag cushion 30 is an adult. It is possible to maintain a proper deployment pressure to protect the.

As such, the shielding member 42 gradually opens the vent hole 36 as the airbag cushion 30 is inflated while the tether separator 50 restrains the tether 44 and the tether separator 50. In the state in which the tether 44 is released, the vent hole 36 is shielded even when the airbag cushion 30 is inflated.

Referring to the operation of the airbag device according to an embodiment of the present invention configured as described above are as follows.

First, when an automobile accident occurs, gas is generated in the inflator 20 and flows into the inside of the airbag cushion 30, whereby the airbag cushion 30 starts to expand and deploy. Since the gas introduced into the air at the initial stage of the airbag cushion 30 is discharged to the outside of the airbag cushion 30 only through the main vent hole 35, the upper body of the passenger can be restrained at an early stage.

When the airbag cushion 30 is inflated to a predetermined size, and at a suitable time before and after the upper body of the passenger is loaded, the tether 44 is formed to a length capable of pulling the other end of the shielding member 42, the passenger Since the shield member 42 is pulled by the tether 44 and the vent hole 36 is gradually opened at an appropriate time before and after the upper body of the upper body is loaded, the air bag after the upper body of the passenger is loaded in the airbag cushion 30. The pressure of the cushion 30 is gradually lowered, so that the head, neck and chest of the passenger can be prevented from being injured by excessive deployment pressure of the airbag cushion 30.

In addition, when the passenger sitting in the passenger seat, the tether separator 50 restrains or releases the tether 44 by the control signal of the controller 60 according to the type (for example, infant or adult), the airbag cushion 30 You can also adjust the deployment pressure.

That is, if it is determined that the passenger sitting in the passenger seat is an infant, the controller 60 prevents the tether separator 50 from being damaged and maintains the state in which the tether separator 50 holds the tether 44. In this case, when the airbag cushion 30 is inflated to a predetermined size, the tether 44 is squeezed to pull the shielding member 42, so that the shielding member 42 is disposed at the center of the vent hole 36. The vent hole 36 is gradually opened while being released from the other end thereof, thereby preventing the deployment pressure of the airbag cushion 30 from suddenly lowering, and the infant is exposed to the excessive deployment pressure of the airbag cushion 30. Injury can be prevented.

In addition, when the controller 60 determines that the passenger sitting in the passenger seat is an adult, gas is generated inside the tether separator 50, and the tether separator 50 is damaged by the gas pressure, thereby causing the tether separator 50 to be broken. It is separated from the tether 44 to release the restraint of the tether 44. In this case, even if the airbag cushion 30 is inflated to a predetermined size, since the tether 44 does not pull the shield member 42, the airbag cushion 30 is kept in a state where the vent hole 36 is shielded. The airbag cushion 30 discharges gas only through the main vent hole 35, thereby maintaining an appropriate pressure to protect the adult.

As described above, the airbag device according to the present invention, since the size of the shield member 42 to open the vent hole 36 is gradually adjusted according to the expansion size of the airbag cushion 30, the vent hole 36 is The gas is released gradually rather than all at once.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

10: airbag housing 20: inflator
30: airbag cushion 32: main panel
34: Side panel 35: Main vent hole
36: vent hole 42: shielding member
44: tether 50: tether separator
60: controller

Claims (8)

An airbag cushion in which a gas is inflated to expand and a vent hole through which the gas is discharged is formed;
A shielding member having one end disposed along a circumference of the vent hole and coupled to the airbag cushion, and the other end disposed at the center of the vent hole so as to shield the vent hole; And
And a tether having one end coupled to the other end of the shielding member to pull the other end of the shielding member so that the shielding member can gradually open the vent hole. The method according to claim 1,
The shield member is formed in a spiral along the length of the airbag device. The method according to claim 1,
The shielding member is coupled to the airbag cushion along one side of the portion disposed along the circumference of the vent hole so that the tether can be released by the pulling force, and the other side overlaps the two sides along the length. Airbag device. The method according to claim 1,
And a tether separator coupled to the other end of the tether and for restraining or releasing the tether by a signal from a controller. The method of claim 4,
And the shielding member gradually opens the vent hole as the airbag cushion is inflated while the tether separator restrains the tether. The method of claim 4,
An airbag housing accommodating the airbag cushion;
And the tether separator is coupled to the airbag housing. The method according to claim 1,
The airbag cushion,
The main panel in contact with the passenger,
Airbag device coupled to both sides of the main panel, the side panel formed with the vent hole. The method according to claim 1,
The airbag cushion further comprises a main vent hole through which the introduced gas is always discharged while the airbag cushion is inflated.
KR1020120053678A 2012-05-21 2012-05-21 Airbag apparatus KR20130129648A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120053678A KR20130129648A (en) 2012-05-21 2012-05-21 Airbag apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120053678A KR20130129648A (en) 2012-05-21 2012-05-21 Airbag apparatus

Publications (1)

Publication Number Publication Date
KR20130129648A true KR20130129648A (en) 2013-11-29

Family

ID=49856202

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020120053678A KR20130129648A (en) 2012-05-21 2012-05-21 Airbag apparatus

Country Status (1)

Country Link
KR (1) KR20130129648A (en)

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