WO2022183884A1

WO2022183884A1 - Curtain airbag for use in vehicle and curtain airbag assembly

Info

Publication number: WO2022183884A1
Application number: PCT/CN2022/075365
Authority: WO
Inventors: 李永强; 王亮; 费祥; 张伟
Original assignee: 奥托立夫开发公司
Priority date: 2021-03-02
Filing date: 2022-02-07
Publication date: 2022-09-09
Also published as: CN215590678U

Abstract

A curtain airbag for use in a vehicle and a curtain airbag assembly. The curtain airbag for use in the vehicle comprises: an airbag body (100), wherein the airbag body comprises an inflatable region (110) and a non-inflatable region (120), and the non-inflatable region (120) comprises an inner non-inflatable region (121) located inside the inflatable region (110) and an outer non-inflatable region (122) located outside the inflatable region (110); an accommodating member (200), wherein the accommodating member is fixed to the inner non-inflatable region (121) and defines a channel; and a restraint member (300), wherein one end of the restraint member (300) is fixed to the outer non-inflatable region (122), and the other end of the restraint member (300) can pass through the channel to be fixed to the vehicle body of the vehicle. The curtain airbag assembly comprises an air generator and the curtain airbag.

Description

Curtain airbags and curtain airbag assemblies for vehicles

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application claims priority to Chinese Patent Application No. 202120453956.2, filed on March 02, 2021, entitled "Curtain Airbag and Curtain Airbag Assembly for Vehicles", the entire contents of which are incorporated herein by reference.

technical field

The present application relates to the field of vehicle protection systems. More specifically, the present application relates to curtain airbags and curtain airbag assemblies for vehicles.

Background technique

The curtain airbag is generally installed on the roof frame of the vehicle, and extends in the front-rear direction of the vehicle. When the vehicle crashes, the curtain airbag is inflated by the inflator and expands along the side of the vehicle between the occupant and the side structure of the vehicle (eg, side windows, pillars, etc.), providing the occupant's head with Protect.

The China Insurance Automobile Safety Index (C-IASI) tests and evaluates the safety of vehicles. When tested, under the condition that the vehicle is subjected to a small offset overlapping collision, the vehicle's curtain airbag will inflate and inflate, so as to cooperate with the driver's airbag or the passenger's airbag to support the dummy's head. However, the air curtain of the prior art is not conducive to supporting the head of the dummy due to the design limitations of other related parts. In particular, a part of the curtain airbag near the A-pillar of the vehicle drifts toward one side of the curtain airbag so as to float out of the window, thereby failing to provide reliable protection for the head.

Therefore, it is desired to provide a curtain airbag capable of preventing sideways drift.

SUMMARY OF THE INVENTION

An object of the present application is to provide a curtain airbag capable of preventing lateral drift, and a curtain airbag assembly including the curtain airbag.

In one aspect, the present application provides a curtain airbag for a vehicle, comprising: an airbag body including an inflatable region and a non-inflatable region, the non-inflatable region including an inner non-inflatable region located at an interior of the inflatable region and a an outer non-inflatable zone at the exterior of the inflatable zone; a receiver secured to the inner non-inflatable zone and defining a passageway; and a restraint one end of which is secured to the outer non-inflatable zone and through which the other end of the restraint can pass The channel is secured to the body of the vehicle.

According to one embodiment of the present application, the airbag body includes an inner side and an outer side, when the airbag body is inflated, the inner side faces an occupant of the vehicle, and the outer side faces a side window of the vehicle, wherein the receiver is fixed at the outer side to the inner non-inflatable region and restrains One end of the piece is externally secured to the outer non-inflatable zone.

According to an embodiment of the present application, the restraining member is a cable.

According to one embodiment of the present application, the containment member is a fabric, and the fabric is fixed to the inner non-inflatable zone by means of stitches.

According to one embodiment of the present application, two opposite ends of the fabric are respectively secured to the inner non-inflatable zone to define a passage for the restraint to pass through.

According to one embodiment of the present application, the inflatable area includes: a front inflatable area for protecting the head of the front occupant; and a rear inflatable area for protecting the head of the rear occupant Protects and is in fluid communication with the front inflatable zone, wherein the receiver is located inside the front inflatable zone and one end of the restraint is secured to the outer non-inflatable zone between the front and rear inflatable zones. part, and the other end of the restraint is fixed to the A-pillar of the vehicle.

In another aspect, the present application provides a curtain airbag assembly, which includes a gas generator and the curtain airbag described in the above embodiments.

According to the curtain airbag of the present application, when the airbag body is inflated, the restraining member is tightened to provide support for the airbag body, thereby preventing the curtain airbag from drifting sideways.

Description of drawings

FIG. 1 shows a curtain airbag according to an embodiment of the present application.

FIG. 2 is a partial enlarged view of the curtain airbag of FIG. 1 .

Detailed ways

Specific embodiments according to the present application will be described below with reference to the accompanying drawings. The following detailed description and accompanying drawings are used to illustrate the principles of the present application by way of example, the present application is not limited to the described preferred embodiments, and the protection scope of the present application is defined by the claims.

FIG. 1 shows a curtain airbag according to an embodiment of the present application, and FIG. 2 is a partial enlarged view of the curtain airbag of FIG. 1 . As shown in FIGS. 1 and 2 , the curtain airbag includes an airbag body 100 , a receiving member 200 and a restraining member 300 . Curtain airbags are configured to be filled with inflation gas by a gas generator to inflate along the sides of the vehicle between the occupant and the side structures of the vehicle (eg, side windows, pillars, etc.) in the event of a vehicle collision, thereby providing air to the occupant. The head provides cushioning. The vehicle pillars may include A-pillars, B-pillars, and C-pillars, and additionally may also include D-pillars.

In one example, the curtain airbag further includes a pull strap 400 . One end of the pulling strap 400 is connected to the middle portion of the front end of the airbag main body 100 for providing a pulling force to the airbag main body 100 . When the airbag main body 100 is inflated, the displacement of the airbag main body 100 to the rear of the vehicle is prevented. The other end of the drawstring 400 is connected to the vehicle body through the fixing member 500 .

The airbag main body 100 includes an inner side and an outer side. When the airbag main body 100 is inflated, the inner side of the airbag main body 100 faces the occupant, and the outer side faces the side window. The airbag body 100 is typically made of two layers of flexible material (eg, fabric and thin polymer), and may be divided into an inflatable region 110 and a non-inflatable region 120, such as by seams. For example, the seams may include one or more of stitches, welds, and/or adhesives.

The inflatable region 110 may be comprised of one or more regions in fluid communication. In one example, the inflatable region 110 includes a front inflatable region 111 and a rear inflatable region 112 in fluid communication. When the curtain airbag is deployed, the front inflatable area 111 can protect the head of the front occupant, and the rear inflatable area 112 can protect the head of the rear occupant. For example, in the case of a vehicle having three pillars, A-pillar, B-pillar and C-pillar, the front inflatable area 111 is located between the front side window between the A-pillar and the B-pillar and the occupant's head when inflated , to cushion the heads of the driver and co-driver, and the rear inflatable area 112, when inflated, is located between the rear side windows between the B-pillar and the C-pillar and the occupant's head for rear passengers The head provides cushioning.

The non-inflatable zone 120 includes an inner non-inflatable zone 121 at the interior of the inflatable zone 110 and an outer non-inflatable zone 122 at the exterior of the inflatable zone 110 . The non-inflatable region 120 is located in a non-active region to reduce the volume of the cavity of the inflatable region 110 . For example, the inner non-inflatable region 121 may be in the shape of a teardrop, a circle, an oval, etc., so as to reduce the force on the inner non-inflatable region 121 when the curtain airbag is inflated, thereby reducing the risk of tearing. In one example, as shown in FIG. 1 , the curtain airbag may include a plurality of interior non-inflatable regions 121 . Four interior non-inflatable zones 121 are located inside the front inflatable zone 111 and one interior non-inflatable zone 121 is located inside the rear inflatable zone 112 . It should be understood that the number of interior non-inflatable regions 121 is not limited to this.

Receptacle 200 is secured to interior non-inflatable zone 121 and defines a channel. In one example, container 200 is a piece of fabric that can be secured to interior non-inflatable zone 121 by stitches 210. Two opposite ends of the fabric are respectively secured to the inner non-inflatable zone 121 to define a channel. For example, the fabric can be square.

One end of the restraint member 300 is fixed to the outer non-inflatable zone 122, and the other end of the restraint member 300 can be fixed to the body of the vehicle through the channel. In one example, restraint 300 is a cable made of a material that lacks stretch. For example, one end of the cable may be secured to the outer non-inflatable zone 122 by sutures, and the other end of the cable may be secured to the vehicle body by the fastener 500 for the strap 400 . The cable can move back and forth within the channel of the receptacle 200 .

According to the curtain airbag of the present application, when the airbag body 100 is inflated, the restraining member 300 is tightened to provide support for the airbag body 100, thereby preventing a portion of the corresponding inflatable region 110 from drifting sideways.

In one example, containment member 200 may be externally secured to inner non-inflatable zone 121 and one end of restraint 300 may be externally secured to outer non-inflatable zone 122 . As a result, when the airbag body 100 is inflated, support is provided on the outside of the airbag body 100, thereby preventing a portion of the corresponding inflatable region 110 from floating out of the window to avoid injury to the occupant's head.

In one example, receiver 200 may be secured to the interior of front inflatable region 111 . One end of the restraint 300 is fixed to a portion of the outer non-inflatable area 122 between the front inflatable area 111 and the rear inflatable area 112, and the other end of the restraint 300 is fixed to the A-pillar of the vehicle. It should be understood that the present application is not limited thereto. The fixed positions of the accommodating member 200 and the restraining member 300 may be determined according to the specific requirements of different working conditions.

In one example, one receptacle 200 is secured to the corresponding inner non-inflatable zone 121 . It should be understood that the curtain airbag may also include a plurality of accommodating members 200 , and each accommodating member 200 is respectively fixed to the corresponding inner non-inflatable region 121 . One end of the restraining member 300 is fixed to the outer non-inflatable region 122, and the other end of the restraining member 300 is fixed to the vehicle body through the plurality of receiving members 200 in sequence.

The curtain airbag assembly includes the curtain airbag of the above-described embodiments and a gas generator for inflating the curtain airbag. Referring again to FIG. 1 , a protruding portion obliquely upward is provided at an intermediate position in the longitudinal direction of the upper side of the curtain airbag. The ends of the protrusions are provided with openings for insertion of a gas generator (not shown).

As mentioned above, although the exemplary embodiments of the present application have been described in the description with reference to the accompanying drawings, the present application is not limited to the above-mentioned specific embodiments, and the protection scope of the present application should be defined by the claims and their equivalents.

Claims

A curtain airbag for a vehicle, comprising:

An airbag body (100) comprising

an inflatable zone (110), and

A non-inflatable zone (120) comprising an inner non-inflatable zone (121) at the interior of the inflatable zone (110) and an outer non-inflatable zone (122) at the exterior of the inflatable zone (110) ;

a receptacle (200) secured to said inner non-inflatable zone (121) and defining a channel; and

A restraint (300), one end of the restraint (300) is fixed to the outer non-inflatable zone (122), and the other end of the restraint (300) can be fixed to the vehicle through the passage body.
The curtain airbag for a vehicle according to claim 1, wherein:

The airbag body (100) includes an inner side and an outer side, the inner side faces an occupant of the vehicle when the airbag body (100) is inflated, and the outer side faces a side window of the vehicle, wherein,

Said containment member (200) is fixed on said outer side to said inner non-inflatable zone (121), and said one end of said restraint member (300) is fixed on said outer side to said outer non-inflatable zone (122) .
The curtain airbag for a vehicle according to claim 1, wherein:

The restraining member (300) is a cable.
The curtain airbag for a vehicle according to claim 1, wherein:

The receptacle (200) is a fabric secured to the inner non-inflatable zone (121) by stitches (210).
The curtain airbag for a vehicle according to claim 4, wherein:

Two opposite ends of the fabric are respectively secured to the inner non-inflatable zone (121) to define the passage through which the restraint (300) passes.
The curtain airbag for a vehicle of claim 1, wherein the inflatable region (110) comprises:

a front inflatable area (111) for head protection of the front occupants; and

a rear inflatable area (112) for head protection of a rear occupant and in fluid communication with said front inflatable area (111), wherein,

The containment member (200) is located inside the front inflatable zone (111), and one end of the restraint member (300) is fixed to the outer non-inflatable zone (122) at the front inflatable zone (111) and the rear inflatable area (112), and the other end of the restraint (300) is fixed to the A-pillar of the vehicle.
A curtain airbag assembly, characterized in that, comprising:

gas generators; and

The curtain airbag according to any one of claims 1 to 6.