KR100805438B1 - Detachable Airbag Unit - Google Patents

Abstract

The present invention installs an airbag formed with a base chamber and a chest chamber so that the inflator gas supplied into the airbag can move freely through the inner vent hole to protect the occupant in the passenger seat during a vehicle crash. And it relates to a detachable airbag device that allows the infant to softly collide with the airbag and to minimize the deployment pressure directly received by the body by the airbag.

Airbag, Inflator, Diaphragm, Base Chamber, Chest Chamber

Description

Separable Airbag Unit {The Air-bag Structure Of a Separative Type}

1 is a view showing a removable airbag device according to the present invention.

2 is a cross-sectional view taken along the line A-A shown in FIG.

3a to 3c are views showing the operating state of the removable airbag device according to the present invention.

* Description of the symbols for the main parts of the drawings

3: seat belt 10: air bag

22: outer vent hole 100: diaphragm

110,120: first and second diaphragm 130: inner vent hole

210: base chamber 220: chest chamber

300: Tether

The present invention relates to an airbag applied to a passenger seated in a passenger seat by dividing the inside of the airbag into a base chamber and a chest chamber so that the inflator gas supplied into the airbag can flow through the inner vent hole at different pressures. The present invention relates to a detachable airbag device that can be used to minimize the impact of a collision.

In general, in order to protect the driver and passengers in the event of a vehicle crash, an air bag module is mounted on the steering wheel or the crash pad.

The airbag module deploys an air bag during a vehicle collision so that a driver or a passenger may not collide with a crash pad or a wind shield provided inside the vehicle, thereby reducing injuries caused by a collision.

The airbag module may be classified into a top mounting method and a mid mounting method according to a location of the airbag module installed in the crash pad of the vehicle.

The top mounting method is configured such that the airbag module is installed at the top of the crash pad and then deployed in a vehicle crash to be folded into the top surface of the crash pad and the wind shield.

In addition, the mid mounting method is configured so that the airbag module is installed in the middle of the crash pad, and is deployed in a vehicle crash to be folded and folded on the middle surface of the crash pad.

In the conventional airbag structure as described above, a passenger in a passenger seat usually wears a seat belt, but sometimes a seat belt is not worn.

When the frontal collision occurs while the passengers wear the seat belt, the lower body and chest of the passengers are restrained by the seat belts to control the passengers moving forward by the inertia force caused by the collision of the vehicle. The passengers can be protected from collision with the windshield, but the head of the passengers cannot be protected.

In addition, the seat belt airbag operated in a state in which the movement of the chest region is restricted by the seat belt double impact on the passenger's chest, causing a problem of high injury to the passenger's chest.

In addition to the above problems, if the airbag is deployed while the vehicle runs while the infant or child is in the passenger seat, the infant or child may be injured due to the airbag deployment. In other words, the adult is driving the vehicle in a stable posture, but the infant or child is standing in the passenger seat or the vehicle is driven in an unstable posture. An injury occurred and needed a countermeasure.

The present invention has been made in order to solve the above problems, by installing an air bag having a base chamber and a chest chamber that can be freely moved by the pressure difference between the gas supplied from the inflator through the inner vent hole passengers due to the vehicle crash The goal is to minimize the risk of injury.

In order to achieve the above object, the detachable airbag device according to the present invention is provided inside the airbag, and at least one inner vent hole is formed such that the inflator gases supplied into the airbag can freely move due to pressure differences between the airbags. Located in the upper part of the diaphragm and connected to the inner vent hole is configured a base chamber deployed by the inflator gas to protect the upper part of the passenger's head and chest.

Located in the lower portion of the base chamber and connected to the inner vent hole is configured to include a chest chamber deployed by the inflator gas to protect the lower part of the passenger's chest.

The inner vent hole is configured to be formed in a circular or quadrangular shape.

The diaphragm is configured such that one end is installed inside the air bag housing provided with the air bag and extends forward, and the other end is connected to the inside of the front end of the air bag.

The diaphragm includes a first diaphragm having one end extending upwardly at a position spaced from left and right sides of an inner bottom of the airbag, and a second diaphragm horizontally connected to an upper end of the first diaphragm.

The diaphragm is configured such that inner vent holes are formed at left and right sides of the first diaphragm such that the gas supplied to the base chamber or the chest chamber is movable.

At least one inner vent hole may be provided on the first diaphragm.

The airbag is provided with a tether for stable deployment operation, one end of which is fixed and formed on both sides of the inner side of the airbag, and the other end is configured to be connected to the second diaphragm.

The base chamber is configured to deploy and operate by contacting the lower ends of both sides of the base chamber to the passenger's knee when the air bag is deployed to the vehicle interior, and the chest chamber is located between the lower ends of both sides of the base chamber do.

The base chamber and the chest chamber are configured such that outer vent holes are formed at left and right sides thereof.

An embodiment of a detachable airbag device according to the present invention as described above will be described in detail with reference to the drawings.

1 is a view showing a detachable airbag device of a vehicle according to the present invention, Figure 2 is a cross-sectional view taken along the line AA shown in Figure 1, Figures 3a to 3c is an operating state of the detachable airbag device of the vehicle according to the present invention Figure is shown.

1 to 2, at least one inner vent hole provided in the airbag 10 and provided so that the inflator gases supplied into the airbag 10 may freely move due to pressure differences between the airbags 10. The diaphragm 100 having the 130 formed thereon is installed.

The base chamber 210 is formed at an upper portion of the diaphragm 100 so as to be connected to the inner vent hole 130 so as to protect the upper part of the head and chest of the passenger 2.

A chest chamber 220 is formed below the base chamber 210 and connected to the inner vent hole 130 to be developed by the inflator gas so that the lower part of the chest of the passenger 2 can be protected. The base chamber 210 is preferably configured to have a relatively larger volume than the chest chamber 22.

The inner vent hole 130 is configured to be formed in a circular or quadrangular shape.

The diaphragm 100 is configured such that one end is installed inside the air bag housing provided with the air bag 10 and extends forward, and the other end is connected to the front end of the air bag 10.

The diaphragm 100 includes a first diaphragm 110 having one end extending upwardly at a position spaced from left and right sides of an inner bottom of the airbag 10, and a first horizontally connected to an upper end of the first diaphragm 110. It comprises a two diaphragm 120.

The diaphragm 100 has inner vent holes 130 formed at right and left sides of the first diaphragm 110 such that the gas supplied to the base chamber 210 or the chest chamber 220 is movable. The inner vent hole 230 is configured to be provided with at least one on the first diaphragm 110.

The airbag 10 is provided with a tether 300 for stable deployment operation, one end of which is fixed and formed on both sides of the inner side of the airbag 10, and the other end is connected to the second diaphragm 120. do.

The base chamber 210 is configured such that when the airbag 10 is deployed and operated in a vehicle interior, lower ends of both sides of the base chamber 210 are supported in contact with the lap of a passenger and deployed. Located between the lower ends of both sides of the chamber 210 is configured to be deployed.

The base chamber 210 and the chest chamber 220 are configured such that the outer vent holes 22 are formed at left and right sides thereof, or the outer chamber 22 is formed in the base chamber 210, and the chest chamber ( 220 may be configured without an outer vent hole.

The inflator 30 for supplying gas to the airbag 10 is provided to enable supply of gas into the first inflator 32 and the chest chamber 220 provided to supply the gas to the base chamber 210. Consisting of a second inflator 34.

The operation state of the detachable airbag device according to the present invention as described above will be described in detail with reference to the drawings.

FIG. 3A is a view illustrating a state in which the airbag is deployed in a state in which a passenger in a passenger seat does not wear a seat belt.

Referring to FIG. 3A, when a passenger (2) rides in the passenger seat while the vehicle is started on, a belt wearing sensor (not shown) detects whether the seat belt (3) is worn or not. Sends a signal to an airbag controller (not shown).

The airbag controller receives a signal transmitted from the belt wearing sensor and calculates the signal and determines whether the airbag 10 is operated in a vehicle crash.

In FIG. 3A, when the passenger 2 is not wearing the seat belt 3, when the vehicle is driven in the above state and a collision occurs, the body of the passenger 2 seated in the passenger seat is caused by inertia. The first inflator is moved to the inside of the base chamber 210 and the chest chamber 220 so that the occupant is prevented from being injured by a direct collision with the crash pad (not shown) or the wind shield of the vehicle. 32 and the gas supplied from the second inflator 34 are respectively injected.

When gas is injected into the airbag 2, both lower end portions 212 (see FIG. 2) of the base chamber 210 are first contacted and supported by the passenger's knee to be deployed and operated. The lower end 212 of the base chamber 210 is adjusted according to the upper body of the upper part of the knee according to the body of the passenger (2) to accurately protect the passengers, it may be deployed in the lower position in front of the knee.

At the same time, the gas generated in the second inflator 34 is supplied into the chest chamber 220, so that the chest chamber 220 is deployed and protected to the lower part of the chest and the abdomen of the passenger 2.

The airbag 10 deployed and operated toward the passengers 2 as described above absorbs energy while colliding with the passengers 2 and is deformed into the airbag 10 by the body of the passengers 2. The gas corresponding to the deformation displacement of the gas is discharged to the outside of the airbag 10 through the outer vent hole 22 to prevent passenger injury due to a vehicle collision. At this time, the gas is discharged only through the outer vent hole 22.

FIG. 3B is a view showing a state in which the airbag is deployed and operated while the passengers in the passenger seat wear seat belts.

Referring to FIG. 3B, when a passenger (2) rides in the passenger seat while the vehicle is started on, a belt wearing sensor (not shown) detects whether the seat belt (3) is worn or not and the airbag Sends a signal to a controller (not shown).

The airbag controller receives a signal transmitted from the belt wearing sensor and calculates the signal and determines whether the airbag 10 is operated in a vehicle crash.

In FIG. 3B, when the passenger 2 wears the seat belt 3, when a collision occurs while driving the vehicle in the above state, the first inflator 32 provided in the airbag housing is operated to operate the airbag 10. Gas is injected into the base chamber 210.

That is, when the passenger 2 wears the seat belt 3, the seat belt 3 restrains the chest part of the passenger 2 to absorb the inertial energy of the passenger 2 due to the collision of the vehicle. The upper part of the head and chest of the passenger 2 collides with the base chamber 210 of the deployed airbag 2.

As the base chamber 210 collides with the passenger 2, the gas corresponding to the deformation displacement of the air bag 10 deformed into the air bag 10 by the body of the passenger 2 is the outer vent hole 22. ) And the inner vent hole 130 (see FIG. 1) are discharged to the outside of the airbag 10 and the chest chamber 220 to prevent passenger injury due to a vehicle crash. This protects the neck, including the head of the passenger (2).

FIG. 3C is a view illustrating a state in which the airbag is deployed and operated while the body of the infant seated in the passenger seat is restrained by the child seat.

Referring to FIG. 3C, when the infant 6 is typically seated in the passenger seat, the restraint belt (not shown) provided in the child seat 5 is provided. The body of the infant 6 is restrained from being thrown forward, and the child seat 5 is firmly fixed by the seat belt 3.

When a vehicle collision occurs in the above state, the first inflator 32 provided in the airbag housing is operated to inject gas into the base chamber 210 of the airbag 10.

In the case of a vehicle crash, the infant's head or lower body collides with the crash pad or windshield, or the whole body of the infant's body bounces forward. The neck 30 including the head of the infant 6 is preferentially absorbed by the belt 30 and the base chamber 210. The gas supplied therein causes collision with the airbag 10 deployed and operated.

The airbag 10 absorbs energy while colliding with the child seat 5 or the infant 6 and deforms the inside of the airbag 10 by the child seat 5 or the infant 6. Gas corresponding to the deformation displacement is discharged to the chest chamber 220 through the outer vent hole 130 and the outside of the air bag 10 through the outer vent hole 22 and the inner vent hole 130 (see FIG. 1). Injury caused by vehicle collision is prevented.

As shown in the enlarged view of FIG. 3C, the chest chamber 220 corresponding to the head position of the infant 6 may not be deployed and may be protected from impact by inflating the airbag 10.

On the other hand, the present invention can be variously modified by those skilled in the art without departing from the gist of the invention.

As described above, the detachable airbag device according to the present invention is provided with a detachable airbag free of gas flow supplied from the inflator between the base chamber and the chest chamber inside the airbag, so that both adults, infants, and children in the passenger seat are prevented from vehicle collision. There is an effect that can be used to minimize the occurrence of injury.

In addition, it satisfies various laws of airbags applied to infants and children, and can deploy and operate the airbags in an optimal state regardless of collision at low or high speeds, and has an effect of improving energy absorption performance of the airbags colliding with passengers.

In addition, the inflator can be selectively installed to reduce the overall weight of the airbag housing in which the components including the airbag are embedded.

Claims (9)

Located inside the airbag and located in the upper part of the diaphragm in which at least one inner vent hole is formed so that the inflator gas supplied into the air bag can freely move due to a pressure difference between the airbags and is connected to the inner vent hole. And a base chamber deployed by the inflator gas so that the upper portion of the chest is protectable; And Located in the lower portion of the base chamber and connected to the inner vent hole is provided with a chest chamber deployed by the inflator gas to protect the lower part of the passenger's chest, The base chamber and the chest chamber is characterized in that it comprises an outer vent hole formed on both left and right sides. The method of claim 1, The inner vent hole is a separate airbag device, characterized in that formed in a circular or rectangular shape. The method of claim 1, The diaphragm is detachable airbag device, characterized in that one end is installed inside the airbag housing provided with an airbag extending forward and the other end is connected to the inside of the front end of the airbag. The method of claim 1, The diaphragm may include a first air diaphragm extending upward from a position spaced from left and right sides of an inner bottom of the air bag, and a second air diaphragm horizontally connected to an upper end of the first diaphragm. Device. The method of claim 4, wherein The diaphragm has an inner vent hole formed at left and right sides of the first diaphragm such that the gas supplied to the base chamber or the chest chamber is movable. The method of claim 5, Separating airbag device, characterized in that at least one inner vent hole is provided on the first diaphragm. The method according to claim 1 or 4, The airbag is a detachable airbag device, characterized in that the tether is installed for a stable deployment operation, one end is fixedly extended on the inner left and right sides of the airbag is formed extending and the other end is connected to the second diaphragm. The method of claim 1, The base chamber is configured to deploy and operate by contacting the lower ends of both sides of the base chamber to the passenger's knee when the air bag is deployed to the vehicle interior, and the chest chamber is located between the lower ends of both sides of the base chamber Removable airbag device, characterized in that. delete

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