KR20220046338A - Center side air bag apparatus for vehicle - Google Patents

Abstract

The present invention relates to a vehicle center side airbag apparatus, wherein a tether (300) restrains an airbag cushion (100) while surrounding an upper expansion unit (140) of the deployed airbag cushion (100), so that supporting force of the upper expansion unit (140) of the airbag cushion (100) by the tether (300) is significantly reinforced. Therefore, the vehicle center side airbag apparatus prevents a collision situation between a passenger in a driver seat and a passenger in a fellow passenger seat, to further strengthen a protection function of the passenger.

Description

Center side airbag device for vehicle {CENTER SIDE AIR BAG APPARATUS FOR VEHICLE}

The present invention relates to a center-side airbag device for a vehicle, and more particularly, to a center-side airbag for a vehicle capable of greatly strengthening the supporting force of an upper inflatable part by supporting an upper inflatable part of a deployed airbag cushion using a tether fixed to a headrest part. It's about the device.

In general, a vehicle is provided with various types of airbag devices for protecting passengers in the event of an accident. Among them, a curtain airbag device and a side airbag device are deployed in a direction in which a side collision occurs to protect passengers.

The side airbag device is a configuration in which the seatback includes an airbag cushion and an inflator, and is divided into a near side airbag device, a far side airbag device, or a center side airbag device.

The near side airbag device is mounted so that the airbag cushion is positioned from the seatback to the door side of the vehicle. In the event of a side collision, the airbag cushion is deployed into the space between the passenger and the door, and the passenger is removed from the body member protruding inward due to the impact of the side impact. plays a protective role.

The far side airbag device or center side airbag device is installed so that the airbag cushion is located on the interior side where the center console is located, not on the door side of the vehicle. It serves to protect the head and chest by limiting the movement of passengers moving inside the vehicle.

On the other hand, in the case of the center side airbag device, in order to properly control the behavior of the driver's seat passenger through the deployed airbag cushion, it is more advantageous for the tether to restrain the upper inflatable portion than to restrain the lower inflatable portion of the airbag cushion.

The lower inflatable part of the airbag cushion may be defined as an area that protects the torso of the passenger in the deployed airbag cushion, and the upper inflatable part of the airbag cushion may be defined as an area that protects the shoulder including the passenger's head in the deployed airbag cushion. there is.

However, in the conventional center side airbag device, both ends of the tether are coupled to the inflator studs fixed to the side of the seatback, and the body protector of the deployed airbag cushion is simply wrapped and restrained. Shoulder protection of the deployed airbag cushion The force to support the buoyancy is insufficient, and due to this, a phenomenon occurs in which the position freely changes while the airbag cushion rotates when a passenger is loaded in the airbag cushion.

The matters described as the background art above are only for improving the understanding of the background of the present invention, and should not be accepted as acknowledging that they correspond to the prior art already known to those of ordinary skill in the art.

Republic of Korea Patent Publication No. 10-2017-0011396

The present invention is a configuration of a center-side airbag device for a vehicle having a tether that is fixed at both ends to a headrest part and supports the upper inflatable part of a deployed airbag cushion while wrapping, and the support force of the upper inflatable part in the airbag cushion deployed through the tether is improved. The purpose is to make it possible to greatly strengthen it, and through this, to further strengthen the protective function of passengers.

According to an aspect of the present invention, there is provided a center-side airbag device for a vehicle, comprising: an airbag cushion deployed between a driver's seat passenger and a front passenger seat passenger in a seatback; and a tether having both ends fixedly coupled to the headrest part and wrapped around the upper inflatable part of the deployed airbag cushion.

and an inflator fixed to the seatback and supplying airbag gas to the airbag cushion.

The headrest part includes a guide pipe fixed to the upper end of the seatback and into which the headrest stay is inserted; Both ends of the tether are fixedly coupled to the guide pipe.

The first inactive zone, which is a non-inflated area, is located at a position matching the shoulder of the passenger based on the deployed airbag cushion; The airbag cushion is characterized in that the region is divided into a lower inflatable part that protects the passenger's torso and an upper inflatable part that protects the passenger's head and shoulders based on the first inactive zone.

The first inactive zone, which is a non-inflated area, is located at a position matching the shoulder of the passenger based on the deployed airbag cushion; a second inactive zone, which is a non-inflated area, is located at a front uppermost position of the airbag cushion that has moved diagonally upward from the first inactive zone; The tether is characterized in that it surrounds and supports the upper inflatable part of the airbag cushion deployed in a form penetrating the first inactive zone and the second inactive zone.

a first tether hole and a second tether hole through which the tether passes are formed in the first inactive zone and the second inactive zone; The tether is not fixed to the airbag cushion except for both ends fixed to the headrest part, so that when the airbag cushion is deployed, it slides through the first tether hole and the second tether hole.

a first tether hole and a second tether hole through which the tether passes are formed in the first inactive zone and the second inactive zone; The tether includes a first section that passes through the first tether hole inwardly after wrapping the airbag cushion from the outside from one end fixed to the headrest part; a second section that is continuous with the first section, wraps the airbag cushion from the inside, and then passes through the second tether hole outward; a third section that is continuous with the second section, wraps around the airbag cushion from the outside, and then passes through the first tether hole in the inside direction; and a fourth section continuous with the third section, wrapping the airbag cushion from the inside, and ending at the other end fixed to the headrest unit.

The first to fourth sections pass through the first tether hole and the second tether hole in an 8 shape to surround and support the upper inflatable part of the airbag cushion deployed.

On the side of the seatback, a tear line torn due to the tether when the airbag cushion is deployed is characterized in that it is provided to extend from a position matching the shoulder of the passenger to the uppermost unit value of the seatback.

The center-side airbag device for a vehicle according to the present invention has a configuration for restraining the airbag cushion while enclosing the upper inflatable part of the airbag cushion in which the tether is deployed. It is possible to eliminate the phenomenon that the airbag cushion rotates when a passenger is loaded on the cushion, and through this, it is possible to prevent a phenomenon in which the position of the airbag cushion changes after deployment, thereby preventing a collision situation between the driver's seat and the front passenger. As a result, there is an effect that the protective function of the passenger can be further strengthened.

1 is a view of a center side airbag device in a state in which an airbag cushion is restrained by a tether according to the present invention, as viewed from the outer side of the seatback;
2 is a view of FIG. 1 viewed from the inner side of the seatback;
3 is a view for explaining a state in which both ends of the tether according to the present invention are fixed to the guide pipe constituting the headrest part;
4 is a view of a state in which the upper inflatable part of the airbag cushion is restrained by a tether according to the present invention;
5 is a schematic view of FIG. 4 viewed from the side;
6 is a view for explaining that the tear line is provided on the upper side of the seatback according to the present invention.

Specific structural or functional descriptions of the embodiments of the present invention disclosed in the present specification or application are only exemplified for the purpose of describing the embodiments according to the present invention, and the embodiments according to the present invention are implemented in various forms. and should not be construed as being limited to the embodiments described in the present specification or application.

Since the embodiment according to the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the present specification or application. However, this is not intended to limit the embodiment according to the concept of the present invention to a specific disclosed form, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one element from another element, for example, without departing from the scope of the present invention, a first element may be called a second element, and similarly The second component may also be referred to as the first component.

When an element is referred to as being “connected” or “connected” to another element, it is understood that it may be directly connected or connected to the other element, but other elements may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle. Other expressions describing the relationship between elements, such as "between" and "immediately between" or "neighboring to" and "directly adjacent to", etc., should be interpreted similarly.

The terminology used herein is used only to describe specific embodiments, and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate that the specified feature, number, step, operation, component, part, or a combination thereof exists, and includes one or more other features or numbers. , it should be understood that it does not preclude the existence or addition of steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as meanings consistent with the context of the related art, and unless explicitly defined in the present specification, they are not to be interpreted in an ideal or excessively formal meaning. .

A control unit (controller) according to an exemplary embodiment of the present invention includes a non-volatile memory (not shown) configured to store data regarding an algorithm configured to control the operation of various components of a vehicle or software instructions for reproducing the algorithm; It may be implemented through a processor (not shown) configured to perform operations described below using data stored in the corresponding memory. Here, the memory and the processor may be implemented as separate chips. Alternatively, the memory and processor may be implemented as a single chip integrated with each other. A processor may take the form of one or more processors.

Hereinafter, a center-side airbag device for a vehicle according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

The center-side airbag device for a vehicle according to the present invention has a configuration including an airbag cushion 100, an inflator 200, and a tether 300 as shown in FIGS. 1 to 6, and an airbag cushion 100 and an inflator 200 ) are mounted on the inside side where the center console is located in the seatback 10 of the seat where the driver's seat passenger is seated, and the airbag cushion 100 receives the airbag gas generated from the inflator 200 and receives the driver's seat passenger It is deployed between the passenger and the front passenger to protect the passengers.

The tether 300 has a configuration in which the upper inflatable part 140 of the deployed airbag cushion 100 is wrapped around and supported, and both ends are fixedly coupled to the headrest part 400 .

When the tether 300 wraps around and supports the upper inflatable part 140 of the deployed airbag cushion 100, the head and shoulders of the passenger are restrained by the upper inflatable 140, and at this time, the lower body including the passenger's torso is deployed The restraint is naturally made by the lower inflatable part 130 of the airbag cushion 100, which effectively restrains the movement of the passenger in the event of a side collision, thereby further strengthening the protective function of the passenger.

In addition, when the tether 300 wraps around and supports the upper inflatable part 140 of the deployed airbag cushion 100, the rotation of the airbag cushion 100 when a passenger is loaded on the deployed airbag cushion 100 is eliminated. Through this, it is possible to prevent a phenomenon in which the position of the airbag cushion 100 changes after deployment, thereby preventing a collision situation between the driver's seat passenger and the front passenger's seat passenger, and as a result, the protective function of the passenger can be further strengthened. there will be

The headrest part 400 to which both ends of the tether 300 are fixed is fixed to the top of the headrest 410 , the headrest stay 420 coupled to the headrest 410 , and the seatback 10 and the headrest stay It includes a guide pipe 430 into which the 420 is inserted, and has a structure coupled to the guide pipe 430 so that both ends of the tether 300 are fixed.

The airbag cushion 100 includes an inflated region and a non-inflated region that are inflated by receiving the airbag gas generated by the inflator 200 .

The inflatable area may be an area that substantially protects passengers while absorbing shocks from the driver's seat passenger and front passenger's passenger, and the non-inflated area may be an area that does not inflate like the inflatable area but protects the passenger while supporting the inflatable area.

That is, in the airbag cushion 100 according to the present invention, the first inactive zone 110, which is a non-inflated area, is located at a position matching the shoulder of the passenger based on the deployed state, and in the first inactive zone 110 . The second inactive zone 120, which is another non-expandable area, is located at the uppermost position in the front that has moved in the diagonal direction to the upper side of the front.

In addition, the airbag cushion 100 according to the present invention has a lower inflatable part 130 that protects the passenger's torso based on the first inactive zone 110 , and an upper inflatable part 140 that protects the head and shoulders of the passenger. ) can be divided into areas.

Based on the deployed state of the airbag cushion 100 , the upper inflatable unit 140 is positioned above the lower inflatable unit 130 , and the first inactive zone 110 is located above and above the lower inflatable unit 130 . It may be provided to extend up and down in a form that spans the lower side of the expansion unit 140 .

A first tether hole 150 and a second tether hole 160 through which the tether 300 passes are formed in the first inactive zone 110 and the second inactive zone 120 provided in the airbag cushion 100 . and the tether 300 penetrates the first inactive zone 110 and the second inactive zone 120 through the first tether hole 150 and the second tether hole 160 and the deployed airbag cushion 100 ) can be supported so as to surround the upper expandable part 140 .

The tether 300 according to the present invention penetrates the first tether hole 150 and the second tether hole 160 , and thus the first tether hole 150 and the second tether hole 160 are connected to the tether 300 . It is preferable that the tether 300 penetrates the first tether hole 150 and the second tether hole 160, and both ends of the guide pipe constituting the headrest part 400 ( 430) and may be fixed.

Both ends of the tether 300 are fixed to the guide pipe 430 constituting the headrest unit 400, and the remaining portions of the tether 300 except for both ends are not fixed to the airbag cushion 100, so the airbag cushion 100 It can slide smoothly through the first tether hole 150 and the second tether hole 160 during deployment.

The tether 300 wraps the airbag cushion 100 from the outside from one end fixed to the headrest unit 400 and then passes through the first tether hole 150 in the inward direction. The first section 310, the first section A second section 320 that passes through the second tether hole 160 in the outward direction after wrapping the airbag cushion 100 from the inside in succession with the 310, and the airbag cushion 100 continuous with the second section 320 ), a third section 330 passing through the first tether hole 150 inwardly after wrapping from the outside, and the third section 330 and continuous to wrap the airbag cushion 100 from the inside, then the headrest part It includes a fourth section 340 up to the other end fixed to 400 .

The first section 310 to the fourth section 340 of the tether 300 passes through the first tether hole 150 and the second tether hole 160 in an 8 shape and the upper end of the deployed airbag cushion 100 is expanded. It is supported so as to surround the portion 140, and through the 8-shaped structure of the tether 300, the upper inflatable portion 140 of the airbag cushion 100 can be more reliably restrained by the tether 300, through which Since the supporting force of the upper inflatable part 140 of the airbag cushion 100 by the tether 300 can be greatly strengthened, the protective function of the passenger can be further strengthened.

In addition, according to the present invention, the side of the seatback 10 may be provided with a tear line 11 torn due to the tether 300 when the airbag cushion 100 is deployed, and the tear line 11 is the airbag. For smooth withdrawal of the tether 300 when the cushion 100 is deployed, it is preferable to extend from a position matching the shoulder of a passenger seated on the seat to the uppermost value of the seatback 10, but is not limited thereto. .

As described above, in the center-side airbag device for a vehicle according to the embodiment of the present invention, in the configuration for restraining the deployed airbag cushion 100 using the tether 300, the tether 300 is the deployed airbag cushion 100. It is characterized by a configuration that restrains the airbag cushion 100 while enclosing the upper inflatable 140, and can greatly strengthen the supporting force of the upper inflatable 140 of the airbag cushion 100 by the tether 300. It is possible to eliminate the phenomenon that the airbag cushion 100 rotates when a passenger is loaded into the airbag cushion 100, and through this, it is possible to prevent a phenomenon in which the position of the airbag cushion 100 is changed after deployment, so that the driver's seat passenger It is possible to prevent a collision situation for the passenger in the passenger seat, and as a result, there is an advantage that the protection function of the passenger can be further strengthened.

Although the present invention has been shown and described with reference to specific embodiments, it is within the art that the present invention can be variously improved and changed without departing from the spirit of the present invention provided by the following claims. It will be obvious to those of ordinary skill in the art.

10 - seatback 11 - tear line
100 - Airbag cushion 110 - 1st inactive zone
120 - 2nd inactive zone 130 - bottom expansion part
140 - upper expansion part 150 - first tether hole
160 - 2nd tether hole 200 - Inflator
300 - Tether 310 - Section 1
320 - 2nd section 330 - 3rd section
340 - 4th section 400 - Headrest part
410 - headrest 420 - headrest stay
430 - guide pipe

Claims (9)

an airbag cushion deployed between the driver's seat and front passenger in the seatback; and
A center side airbag device for a vehicle, comprising: a tether that wraps around and supports the upper inflatable part of the deployed airbag cushion and both ends are fixedly coupled to the headrest part. The method according to claim 1,
and an inflator fixed to the seatback and supplying airbag gas to the airbag cushion. The method according to claim 1,
The headrest part includes a guide pipe fixed to the upper end of the seatback and into which the headrest stay is inserted;
A center side airbag device for a vehicle, characterized in that both ends of the tether are fixedly coupled to the guide pipe. The method according to claim 1,
The first inactive zone, which is a non-inflated area, is located at a position matching the shoulder of the passenger based on the deployed airbag cushion;
The airbag cushion is a center-side airbag device for a vehicle, characterized in that the region is divided into a lower inflatable part that protects the passenger's torso and an upper inflatable part that protects the passenger's head and shoulders based on the first inactive zone. The method according to claim 1,
The first inactive zone, which is a non-inflated area, is located at a position matching the shoulder of the passenger based on the deployed airbag cushion;
a second inactive zone, which is a non-inflated area, is located at a front uppermost position of the airbag cushion that has moved diagonally from the first inactive zone to the upper side;
The tether is a center side airbag device for a vehicle, characterized in that it wraps and supports the upper inflatable part of the airbag cushion deployed in a form penetrating the first inactive zone and the second inactive zone. 6. The method of claim 5,
a first tether hole and a second tether hole through which the tether passes are formed in the first inactive zone and the second inactive zone;
The center side airbag device for a vehicle, characterized in that the tether is not fixed to the airbag cushion except for both ends fixed to the headrest part, so that the tether slides through the first tether hole and the second tether hole when the airbag cushion is deployed. 6. The method of claim 5,
a first tether hole and a second tether hole through which the tether passes are formed in the first inactive zone and the second inactive zone;
The tether includes a first section that passes through the first tether hole inwardly after wrapping the airbag cushion from the outside from one end fixed to the headrest part;
a second section that is continuous with the first section, wraps the airbag cushion from the inside, and then passes through the second tether hole outward;
a third section that is continuous with the second section, wraps around the airbag cushion from the outside, and then passes through the first tether hole in the inside direction; and
and a fourth section continuing from the third section to the other end fixed to the headrest after wrapping the airbag cushion from the inside. 8. The method of claim 7,
The center side airbag device for a vehicle, characterized in that the first to fourth sections pass through the first and second tether holes in an 8 shape and wrap and support the upper inflatable part of the airbag cushion deployed. The method according to claim 1,
A center side airbag device for a vehicle, characterized in that a tear line torn due to a tether when the airbag cushion is deployed is provided on a side surface of the seatback so as to extend from a position matching the shoulder of the passenger to the highest value of the seatback.

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