KR20140124227A - Device to protect Passenger's Neck for air-bag module - Google Patents

Device to protect Passenger's Neck for air-bag module Download PDF

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Publication number
KR20140124227A
KR20140124227A KR20130041704A KR20130041704A KR20140124227A KR 20140124227 A KR20140124227 A KR 20140124227A KR 20130041704 A KR20130041704 A KR 20130041704A KR 20130041704 A KR20130041704 A KR 20130041704A KR 20140124227 A KR20140124227 A KR 20140124227A
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KR
South Korea
Prior art keywords
vent hole
gas
pressure
passenger
active
Prior art date
Application number
KR20130041704A
Other languages
Korean (ko)
Inventor
장래익
Original Assignee
현대모비스 주식회사
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Filing date
Publication date
Application filed by 현대모비스 주식회사 filed Critical 현대모비스 주식회사
Priority to KR20130041704A priority Critical patent/KR20140124227A/en
Publication of KR20140124227A publication Critical patent/KR20140124227A/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
    • B60R21/23—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
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/205—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in dashboards

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

Abstract

The present invention relates to a device for protecting passenger′s neck for an airbag module. More specifically, the device includes a gas pressure generating unit which generates working pressure using gas generated by the explosion of gunpowder, a pressure transmission unit for transmitting pressure generated by the gas pressure generating unit, and an active ventilation hole blocking unit which blocks a ventilation hole to shut off gas discharged to the outside from the inside of an airbag cushion expanded by the collision of a vehicle using pressure transmitted by the pressure transmission unit through the ventilation hole, thereby reducing neck injuries of passengers and improving the satisfaction of the United States new car assessment program (US-NCAP).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a passenger's neck-

[0001] The present invention relates to a passenger neck injury prevention device for an airbag module, and more particularly, to a passenger neck injury prevention device for an airbag module that prevents injury to a neck of a passenger in the event of a vehicle crash, To a passenger neck injury prevention device of an airbag module capable of preventing an accident.

Generally, the vehicle is provided with an airbag module for protecting the driver and the passenger in the event of a crash in the running. The airbag module includes a driver's seat airbag provided on a steering handle of a vehicle disposed in front of the driver's seat to protect the driver, a passenger-side airbag provided on a dashboard disposed in front of the passenger seat to protect a passenger in the passenger seat, And can be divided into a curtain airbag module and a seat airbag module depending on the installation position.

1 is a side view showing an example of a deployed state of a passenger-side airbag module of a vehicle according to the prior art.

As shown in FIG. 1, the passenger's seat airbag module according to the related art is installed in a hidden state on the dashboard 5, and when the impact sensor of the vehicle detects a set impact, And an airbag cushion 20 which is deployed toward the front passengers while being filled with the expansion gas.

The airbag cushion 20 is deployed at a very high speed toward the passenger D in the passenger seat under the guidance of the windshield glass 10 within a range that does not break the windshield glass 10 while being deployed.

On the other hand, in order to prevent the airbag cushion 20 from being injured by the deployed airbag cushion 20 by the excessive infusion of the infusion gas and the rapid deployment of the passenger D toward the passenger seat D, Vent holes (21, 23) for discharging a predetermined gas from the inside of the airbag cushion (20) to the outside are formed at the same time as the expansion gas is fully charged. A plurality of vent holes 21 and 23 may be formed on a side surface portion of the airbag cushion 20 except for a side shielded by the windshield glass 10. This is because, when the vent holes 21 and 23 are shielded by the windshield glass 10, the functions of the vent holes 21 and 23 can not be performed.

In recent years, however, excessive expansion gas has been discharged through the plurality of vent holes 21 and 23 and the internal pressure of the airbag cushion 20 has been lowered, thereby failing to fulfill the original function of shock relief, As shown in FIG. 1, the vent hole 23 is shielded by the vent hole shielding cloths 40 and 43 to reduce the head injury value of the passenger D, The vent holes 23 and the vent holes 23 are opened by cutting the tethers 40 and 45 holding the vent hole shielding cloths 40 and 43 by the spreading force of the vent hole shielding cloths 20 and 20, (Hereinafter referred to as "vent hole opening portion 40" for convenience of explanation).

However, the prior art airbag module 1 of the vehicle according to the related art improved the head injuries of the passenger D to some extent by the vent hole opening portion 40, but the US New Vehicle Safety Evaluation Standard (US-NCAP) The important item, passenger (D) injury, was rather low.

In addition, in order to apply the vent hole opening portion 40, it is necessary to use the vent hole opening portion 40 in an excessive amount by another vent hole not related to the vent hole opening portion 40 (referred to as a 'general vent hole 21' The size of the general vent hole 21 should be small in order to prevent the internal pressure of the airbag cushion from being lowered. However, in the unbelt regulation test (that is, the test is performed without fixing the dummy using the seat belt) The vent hole opening portion 40 is not actuated frequently and is influenced by the general vent hole 21 formed in a small size so that the internal pressure of the airbag cushion 20 is excessively increased, The inhaling value leads to a bad result at the same time, and conversely, when the vent hole opening portion 40 is operated, the internal pressure of the airbag cushion 20 is significantly lowered.

This is a problem that occurs in the unbelt regulation test because the head injury maximum point of time of the passenger D is earlier than the neck injury maximum point and the vent hole opening portion 40 operates simultaneously with the full bubble of the airbag cushion 20. [

SUMMARY OF THE INVENTION It is an object of the present invention to provide an airbag module capable of reducing the neck injury of passengers by shielding a vent hole at the maximum time of the neck of a passenger after the airbag cushion is fully filled, And an object of the present invention is to provide a passenger neck injury prevention device for a passenger.

It is another object of the present invention to provide a passenger neck injury prevention device for an airbag module capable of simultaneously reducing the head injuries and neck injuries of passengers so as to satisfy the US New Vehicle Safety Evaluation Standard (US-NCAP) .

A preferred embodiment of the passenger neck injury prevention device of an airbag module according to the present invention is characterized in that it comprises a gas pressure generating section for generating an operating pressure by gas generation through the explosion of a gunpowder, An active vent hole that shields the vent hole from the inside of the airbag cushion, which is filled up by collision of the vehicle, through the vent hole using the pressure transmitted through the pressure transmitting portion, And a blocking portion.

Here, the pressure transmitting portion may be a gas flow path which is integrally formed between the two-ply airbag cushions, and the gas moves from the gas pressure generating portion to the active vent hole blocking portion.

In addition, the pressure transmitting portion may be a cloth-like flow pipe disposed between the two-ply airbag cushions, wherein the gas forms a gas flow path through which the gas moves from the gas pressure generating portion to the active vent hole blocking portion .

Also, the active vent hole blocking portion may be fixed to one side of the vent hole, one end of the vent hole is connected to the pressure transmitting portion, and the middle portion is folded so as to be folded.

Further, the middle portion of the active vent hole blocking portion may be fixed by sewing.

In addition, the active vent hole blocking portion may be made of a cloth material that covers the vent hole when the gas supplied through the pressure transmitting portion is filled and bulges.

In addition, the active vent hole blocking portion may be formed to have the same shape as the vent hole to shield the vent hole when the gas is supplied through the pressure transmitting portion, and may be formed larger than the vent hole.

The passenger neck injury prevention device of the airbag module according to the present invention can control the pressure generated through the gas pressure generation part due to explosive explosion so as to control the operation time so as to shield the vent hole, .

In addition, the passenger neck injury prevention device of the airbag module according to the present invention can control the precise operation time, and thus has an effect of reducing head injuries as well as head injuries of passengers.

In addition, the passenger-neck injury prevention device of the airbag module according to the present invention has an effect of improving the stability and reliability of the product because it can acquire the maximum score item in the test according to the US New Vehicle Safety Evaluation Standard (US-NCAP) .

1 is a side view showing an example of a deployed state of a passenger-side airbag module of a vehicle according to the prior art,
2 is a conceptual view showing a preferred embodiment of a passenger neck injury prevention device of an airbag module according to the present invention,
3 is a conceptual diagram illustrating an operation process of the passenger neck injury prevention device of the airbag module according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a passenger-neck injury prevention device for an airbag module according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a conceptual view showing a preferred embodiment of a passenger neck injury prevention device of an airbag module according to the present invention, and FIG. 3 is a conceptual view illustrating an operation process of a passenger neck injury prevention device of an airbag module according to the present invention.

A preferred embodiment of the passenger neck injury prevention device 100 of the airbag module according to the present invention comprises a gas pressure generator 110 (shown in FIG. 2) for generating an operating pressure by the generation of gas through the explosion of the gunpowder, A pressure transmitting portion 120 for transmitting the pressure generated by the gas pressure generating portion 110 and an air bag cushion (hereinafter, referred to as " And an active vent hole blocking portion 130 that shields the vent hole 23 so as to block the gas discharged through the vent hole 23 from the inside to the outside.

Here, the airbag cushion 105 refers to a structure that inflates toward a driver and a passenger in a very short time and relieves an impact due to a collision when the inflating gas is filled, and the vent hole 23 is provided to the airbag cushion 105 Hereinafter, a vent hole directly related to the passenger-neck injury prevention device 100 of the airbag module according to the present invention will be referred to as an "active vent hole 23" Another vent hole is referred to as "general vent hole (not shown) ".

The vent hole 23 can be defined as a vent hole 23 according to the present invention regardless of the size and shape of the airbag cushion 105 so as to communicate with the inside and the outside of the airbag cushion 105, The active vent hole 23 associated with the passenger neck injury prevention device 100 of the airbag module according to the present invention can also be employed regardless of its size and shape. However, in the embodiment 100 of the present invention, for convenience of explanation, the active vent hole 23 is defined as a hole formed in a circular predetermined size.

The gas pressure generating portion 110 generates a predetermined working pressure by a gas generated by the explosion of a gunpowder, such as an inflator (not shown) that operates to provide a deployment gas inside the airbag cushion 105 .

The operating pressure generated by the gas pressure generating unit 110 acts as a flow force that directly flows the generated gas and the flow force of the flowing gas is transmitted through the pressure transmitting unit 120 to the final And is transmitted to the active vent hole blocking portion 130.

On the other hand, the pressure transmitting portion 120 may be integrally formed between the two-ply airbag cushions 105. It is possible to employ a method of forming the flow path of the flowing gas by sewing 140 a part of the double-layered airbag cushion 105. However, it is assumed that the airbag cushion 105 is made of two layers. If the airbag cushion 105 is made of a single layer, the above-described flow path of the gas is made of the same material as the airbag cushion 105 It is of course possible to form by sewing (140). Further, it is natural that the pressure transmitting portion 120 can be formed by forming a flow path of gas like a pipe shape and then stitching 140 on the inner surface of the airbag cushion 105. The pressure transmitting portion 120 may be a cloth-like flow pipe to facilitate the sewing 140.

The pressure transmitting portion 120 acts as a gas flow generated by the gas pressure generating portion 110 and moved to the active vent hole blocking portion 130.

The active vent hole blocking portion 130 is provided to intersect the active vent hole 23 so that one end 150 is opposed to the direction in which the pressure transmitting portion 120 is provided with respect to the active vent hole 23 Is fixed to the airbag cushion (105) on one side of the active vent hole (23), and the other end is connected to the pressure transmitting portion (120).

Here, the concept of fixing means that the active vent hole blocking portion 130 is coupled with a fixing force enough to prevent the active vent hole blocking portion 130 from being separated by the operating pressure generated by the gas pressure generating portion 110, Means that the temporarily fixed portion due to the working pressure generated by the generating portion 110 is combined with a fixing force enough to cause a change. The fact that the middle part is folded means that the active vent hole blocking part 130 is folded in any way and the active vent hole blocking part 130 can not remove the active vent hole 23 until the airbag cushion 105 is full. Which means that it is not shielded.

More specifically, the active vent hole blocking portion 130 is connected to the pressure transmitting portion 120 at the other end thereof, and the gas supplied through the pressure transmitting portion 120 flows into the active vent hole blocking portion 130. The active vent hole blocking portion 130 has an active vent hole 23, and is fixed in a folded state so as not to shield the active vent hole 23, and one end 150 is firmly fixed to one side of the active vent hole 23.

The active vent hole blocking part 130 is formed in the same shape as the active vent hole 23 so as to shield the active vent hole 23 when gas is supplied through the pressure transmitting part 120, ).

The operation of the passenger neck injury prevention device 100 of the airbag module according to the present invention will be described in detail.

First, when a vehicle collision occurs, an unillustrated inflator operates to discharge the expanded gas, and the discharged expanded gas is filled with the airbag cushion 105 to rapidly deploy the airbag cushion 105 toward the passenger.

Next, when a predetermined time has elapsed after the airbag cushion 105 is full, the explosive gas of the gas pressure generating part 110 is explosively generated, and the generated pressure gas is supplied to the pressure transmitting part 120, And is provided to the active vent hole blocking portion 130 through the vent holes.

Here, the predetermined time refers to a certain time after the airbag cushion 105 is fully opened, although it differs depending on the specifications of the airbag module mounted on each vehicle. When the airbag cushion 105 is full, the head injuries are small and the injuries to the head of the passenger are small, but the injuries of the passengers are rather large. Experimentally, in order to reduce the head injuries of a passenger, it is necessary that the head of the airbag cushion 105 be in contact with the head at a certain point after the airbag cushion 105 is fully deployed (full), and the head of the passenger is contacted with the airbag cushion 105 The passenger's neck injury prevention device of the airbag module according to the present invention should operate in the direction of reducing the neck injuries of the passenger at this moment.

Therefore, in a preferred embodiment 100 of the passenger neck injury prevention device of the airbag module according to the present invention, the gas pressure generating portion 110 is activated when a predetermined time has elapsed after the airbag cushion 105 is full, The gas generated by the gas pressure generating unit 110 is supplied to the active vent hole blocking unit 130 through the pressure transmission unit 120 so that the active vent hole blocking unit 130 blocks the active vent hole 23 The inside pressure of the airbag cushion 105 is maintained from the moment, and the neck injuries of the passenger are reduced.

As described above, a preferred embodiment of the passenger neck injury prevention device of the airbag module according to the present invention has been described in detail with reference to the accompanying drawings. However, it should be understood that the embodiments of the present invention are not necessarily limited to the above-described preferred embodiments, and that various modifications and equivalents may be made by those skilled in the art something to do. Therefore, it is to be understood that the true scope of the present invention is defined by the appended claims.

100: passenger neck injury prevention device 105: airbag cushion
110: gas pressure generating part 120: pressure transmitting part
130: vent hole blocking portion 140: sewing
150: One end of the vent hole blocking part

Claims (7)

A gas pressure generating unit for generating an operating pressure by gas generation through the explosion of the explosive;
A pressure transmitter for transmitting the pressure generated by the gas pressure generator;
And an active vent hole blocking portion for blocking the vent hole from the inside of the airbag cushion filled in the vehicle by collision of the vehicle using the pressure transmitted through the pressure transmitting portion, through the vent hole, Passenger neck injury prevention device.
The method according to claim 1,
The pressure-
Wherein the gas flow path is integrally formed between the two-ply airbag cushions, and the gas is a gas flow path from the gas pressure generating portion to the active vent hole blocking portion.
The method according to claim 1,
The pressure-
Wherein the gas flow path is disposed between the two-ply airbag cushions, wherein the gas flow path moves the gas from the gas pressure generating portion to the active vent hole blocking portion.
The method according to claim 1,
The active vent hole blocking portion is provided to cross the vent hole and has one end fixed to one side of the vent hole and the other end connected to the pressure transmitting portion, Injury Prevention Device.
The method of claim 4,
And an intermediate portion of the active vent hole blocking portion is fixed by sewing.
The method according to any one of claims 1 to 5,
Wherein the active vent hole blocking portion is made of a cloth material that is filled with gas supplied through the pressure transmitting portion and bulges to cover the vent hole.
The method according to any one of claims 1 to 5,
Wherein the active vent hole blocking portion is formed to have the same shape as the vent hole to shield the vent hole when gas is supplied through the pressure transmitting portion, the vent hole being larger than the vent hole.
KR20130041704A 2013-04-16 2013-04-16 Device to protect Passenger's Neck for air-bag module KR20140124227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR20130041704A KR20140124227A (en) 2013-04-16 2013-04-16 Device to protect Passenger's Neck for air-bag module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR20130041704A KR20140124227A (en) 2013-04-16 2013-04-16 Device to protect Passenger's Neck for air-bag module

Publications (1)

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KR20140124227A true KR20140124227A (en) 2014-10-24

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