KR20230047850A - Roof-mounted type air bag - Google Patents

Abstract

The present invention relates to a roof-mounted airbag that prevents a cushion deployed from a roof from moving excessively according to passenger movement. In the present invention, disclosed is a roof-mounted airbag comprising a main cushion which is inflated and deployed toward passengers between the passengers facing each other; a diaphragm cushion which is deployed between the main cushion and the passengers from the roof of a vehicle; and a diaphragm tether which is connected between a vehicle body and the diaphragm cushion and supports the diaphragm cushion from the movements of the passengers loading on the diaphragm cushion.

Description

Roof-mounted type air bag {Roof-mounted type air bag}

An object of the present invention is to provide a roof-mounted airbag that prevents excessive movement of a cushion deployed in a roof according to the behavior of a passenger.

Autonomous vehicles will have various seat arrangements such as long travel, swivel, and relax mode.

Accordingly, in order to safely protect passengers seated in the seat, restraining devices such as airbags are installed in the seat as well as inside the vehicle in various forms.

On the other hand, in the case of a vehicle installed in a vehicle interior in which seats face each other in front and rear, an airbag is mounted on a roof located between front and rear seats.

When a collision accident occurs in such a vehicle, the cushion mounted on the roof panel is deployed downward and at the same time expands into a shell shape toward the passengers seated in the front and rear seats, so that the passengers seated in the front and rear seats can pass through the front and rear surfaces of the shell-shaped cushion. Loaded into the bar, it protects passengers.

However, since the shell-shaped cushion has a weak force to support the motion of the passenger, it is difficult to stably restrain the passenger because the cushion is suspended from the roof panel when the passenger is loaded and shakes together in the direction of collision, that is, in the direction in which the passenger is loaded. There was a problem.

The matters described as the background art above are only for improving understanding of the background of the present invention, and should not be taken as an admission that they correspond to prior art already known to those skilled in the art.

US 10407018 B2 CN 111469796 A

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a roof-mounted airbag that prevents excessive movement of a cushion in the direction in which a passenger is loaded when a passenger is loaded into a cushion deployed on a roof.

The configuration of the present invention for achieving the above object is, the main cushion that expands and deploys toward the passenger between passengers facing each other; A diaphragm cushion deployed between the main cushion and passengers in the roof of the vehicle; A diaphragm tether is connected between the vehicle body and the diaphragm cushion and supports the diaphragm cushion from the movement of a passenger loaded onto the diaphragm cushion.

The diaphragm cushion is deployed in a shape that blocks the main cushion, so that the passenger may preferentially contact the diaphragm cushion.

The diaphragm cushion may be deployed in a shape in which gas is entirely filled therein.

In the diaphragm cushion, a fill chamber may be deployed in a shape filled with gas along an edge, and a dead zone not filled with gas may be formed in the center.

The diaphragm cushion may be spaced apart from the main cushion and deployed downward.

The diaphragm tether may have an upper end connected to the roof of the vehicle and a lower end connected to the lower end of the diaphragm cushion.

An upper end of the diaphragm tether may be connected to a roof panel on the opposite side of the diaphragm cushion provided with the main cushion interposed therebetween.

The diaphragm tether may be connected to a portion not in contact with passengers.

The diaphragm tether may be deployed in a shape surrounding the main cushion on both sides of the main cushion.

The diaphragm tether may be deployed apart from the main cushion.

The main cushion is downwardly deployed by connecting upper ends of the first chamber and the second chamber to the roof of the vehicle; The lower ends of the first chamber and the second chamber are connected by a connecting chamber so that the lower ends of the first chamber and the second chamber can be deployed toward the passenger.

The connecting chamber may be in communication with the first chamber and the second chamber on both sides of the main cushion.

A shape-retaining tether connecting the upper and lower portions of the main cushion to regulate the shape of the main cushion into a shell shape; may include.

The shape-retaining tether has an upper end connected between the first chamber and the second chamber; A lower end may be connected to a dead zone formed between both connecting chambers.

Through the above problem solving means, the present invention, when a passenger moves toward the direction of collision during a vehicle collision and the passenger is loaded onto the diaphragm cushion, the diaphragm cushion is supported by the diaphragm tether, thereby reducing the load of the passenger through the diaphragm cushion. Since it absorbs a significant portion, it has the advantage of safely reducing the impact energy transmitted to the passenger.

In particular, in a state in which the load of the passenger is reduced through the diaphragm cushion loaded with the passenger, the diaphragm cushion is supported by the main cushion together with the passenger, and the main cushion is supported by the diaphragm cushion on the other side, and the diaphragm tether restricts the movement of the diaphragm cushion on the opposite side. By doing so, excessive movement of the main cushion due to passenger behavior is prevented, and there is also an effect of safely restraining and protecting passengers.

1 is a view for explaining the behavior of a passenger according to a collision accident together with the deployment shape of a roof-mounted airbag according to the present invention.
2 is a view showing a shape of a roof-mounted airbag according to the present invention before operation.
Figure 3 is a view showing the shape before and after the operation of the diaphragm cushion according to the present invention.
Figure 4 is a development view of the state before sewing of the main cushion according to the present invention.

Specific structural or functional descriptions of the embodiments of the present invention disclosed in this specification or application are merely illustrated for the purpose of explaining the embodiments according to the present invention, and the embodiments according to the present invention may be implemented in various forms. It may be and should not be construed as being limited to the embodiments described in this specification or application.

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

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The above terms are only for the purpose of distinguishing one component from another component, e.g., without departing from the scope of rights according to the concept of the present invention, a first component may be termed a second component, and similarly The second component may also be referred to as the first component.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle. Other expressions describing the relationship between elements, such as "between" and "directly between" or "adjacent to" and "directly adjacent to", etc., should be interpreted similarly.

Terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "having" are intended to designate that the described feature, number, step, operation, component, part, or combination thereof exists, but one or more other features or numbers However, it should be understood that it does not preclude the presence or addition of steps, operations, components, parts, or combinations thereof.

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

A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view for explaining the behavior of a passenger according to a collision accident together with the deployed shape of a roof-mounted airbag according to the present invention.

Referring to the drawings, the roof-mounted airbag of the present invention includes a main cushion 100 that is inflated and deployed toward passengers between passengers facing each other; A diaphragm cushion 300 deployed between the main cushion 100 and the passenger in the roof of the vehicle; It is configured to include; a diaphragm tether 400 connected between the vehicle body and the diaphragm cushion 300 and supporting the diaphragm cushion 300 from the behavior of passengers loaded into the diaphragm cushion 300.

For example, it is suitable for application to a vehicle interior structure in which the front seat and the rear seat are installed facing each other, and the airbag module including the main cushion 100 is built-in to the roof part located on the upper part between the front seat and the rear seat. do.

Accordingly, as the main cushion 100 is deployed downward into the space between the front seat and the rear seat, the main cushion 100 is inflated and deployed in a shape protruding toward the passenger sitting on the front seat and the rear seat.

In particular, the front diaphragm cushion 300a is deployed downward in the space between the front seat and the main cushion 100 in the roof of the vehicle, and the rear diaphragm cushion 300b in the space between the rear seat and the main cushion 100 in the roof of the vehicle. ) unfolds downward.

In addition, the front diaphragm tether 400a and the rear diaphragm tether 400b are connected to the front diaphragm cushion 300a and the rear diaphragm cushion 300b, so that passengers may use the front diaphragm cushion 300a or the rear diaphragm cushion ( When loading in 300b), it serves to support the diaphragm cushion.

That is, when a passenger is loaded into the diaphragm cushion 300 as the passenger's body motion is momentarily tilted toward the direction of the collision during a vehicle collision, the diaphragm cushion 300 is supported by the diaphragm tether 400 and the diaphragm cushion ( 300) absorbs a significant portion of the passenger's load.

Therefore, as the diaphragm cushion 300 is supported on the main cushion 100 in a state where the passenger's load is reduced, excessive movement of the main cushion 100 due to the passenger's behavior is prevented, thereby safely restraining and protecting the passenger. do.

In addition, as shown in FIG. 1, the present invention has a structure in which the diaphragm cushion 300 is deployed in a shape that blocks the main cushion 100 so that the passenger preferentially contacts the diaphragm cushion 300.

For example, the diaphragm cushion 300 is formed in the shape of a flat square cushion, and the front diaphragm cushion 300a is deployed directly downward in a shape that blocks between the passenger seated on the front seat and the main cushion 100, and also the rear diaphragm The cushion 300b is deployed directly downward in a shape blocking the gap between the passenger seated on the rear seat and the main cushion 100 .

Therefore, when the passenger moves according to the collision of the vehicle, the passenger's body is not loaded on the main cushion 100 but loaded on the diaphragm cushion 300 first, so that the passenger is carried by the main cushion 100 in a state in which the load of the passenger is reduced. be able to support

On the other hand, as a first embodiment of the diaphragm cushion 300 according to the present invention, the diaphragm cushion 300 may be deployed in a shape filled with gas as a whole.

In addition, as a second embodiment of the diaphragm cushion 300 according to the present invention, the diaphragm cushion 300 has a fill chamber 310 deployed in a shape filled with gas along the rim, and the center is not filled with gas. A dead zone 320 may be formed.

That is, FIG. 3 is a view showing the shape before and after the operation of the diaphragm cushion 300 according to the present invention. As shown in the figure, the fill chamber 310 is formed on the edge of the diaphragm cushion 300, and the diaphragm cushion ( The dead zone 320 may be formed in the center of the fill chamber 300 so that only the fill chamber 310 is filled with gas.

In addition, referring to FIG. 1, the diaphragm cushion 300 may be configured to be downwardly deployed apart from the main cushion 100.

To this end, the front diaphragm cushion 300a may be installed at a point spaced apart from the point where the main cushion 100 is installed on the roof forward by a predetermined interval, and the rear diaphragm cushion 300b is spaced apart by a predetermined interval rearward. can be installed.

Accordingly, the front diaphragm cushion 300a is deployed downward while being spaced forward from the main cushion 100, and the rear diaphragm cushion 300b is also deployed downward while being spaced backward from the main cushion 100.

Therefore, the passenger's load loaded on the diaphragm cushion 300 is absorbed by the diaphragm cushion 300 while moving in the section between the diaphragm cushion 300 and the main cushion 100, thereby absorbing and reducing the passenger's load more effectively. do.

In addition, the diaphragm tether 400 has a structure in which the upper end is connected to the roof panel 500 and the lower end is connected to the lower end of the diaphragm cushion 300.

Specifically, the upper end of the diaphragm tether 400 may be connected to the roof panel 500 on the opposite side of the diaphragm cushion 300 provided with the main cushion 100 interposed therebetween.

1, the lower end of the front diaphragm tether 400a is connected to the lower end of the front diaphragm cushion 300a, and the upper end of the front diaphragm tether 400a is adjacent to the upper end of the rear diaphragm cushion 300b. (500).

Also, the lower end of the rear diaphragm tether 400b is connected to the lower end of the rear diaphragm cushion 300b, and the upper end of the rear diaphragm tether 400b is connected to the roof panel 500 adjacent to the upper end of the front diaphragm cushion 300a. .

Accordingly, when a collision accident occurs in front of the vehicle, the body of the passenger sitting on the rear seat moves toward the front of the vehicle by inertia and is loaded onto the rear diaphragm cushion 300b.

Then, the rear diaphragm cushion 300b is moved forward by the load of the passenger and supported by the main cushion 100, and the main cushion 100 is supported by the front diaphragm cushion 300a.

At this time, the front diaphragm cushion 300a is supported by the front diaphragm tether 400a to limit the forward movement of the front diaphragm cushion 300a, thereby preventing the main cushion 100 from moving toward the collision direction. will do

In addition, in the present invention, the diaphragm tether 400 may be connected to a portion not in contact with the passenger.

For example, the front diaphragm tether 400a is connected to the roof panel 500 on the side of the rear main cushion 100 based on the front diaphragm cushion 300a, so that the front diaphragm tether 400a is deployed during the deployment process of the front diaphragm cushion 300a. ) is unfolded without contacting not only the passenger seated in the front seat, but also the passenger seated in the rear seat.

Similarly, the rear diaphragm tether 400b is connected to the roof panel 500 on the side of the front main cushion 100 based on the rear diaphragm cushion 300b, so that the rear diaphragm tether ( 400b) is unfolded without being in contact with a passenger seated in the front seat as well as a passenger seated in the rear seat.

Therefore, when the diaphragm tether 400 is deployed, the diaphragm cushion 300 is quickly supported by avoiding interference between the diaphragm tether 400 and the passenger, so that the load of the passenger loaded on the diaphragm cushion 300 is stably maintained. be able to reduce

In addition, the diaphragm tether 400 may be deployed on both sides of the main cushion 100.

Also, the diaphragm tether 400 may be deployed apart from the main cushion 100 .

For example, referring to FIG. 2, the front diaphragm tether 400a is provided on both sides of the front diaphragm cushion 300a, and is spaced apart from both sides of the main cushion 100 to the left and right of the main cushion 100 by a predetermined interval. provided in the state

In addition, the rear diaphragm tethers 400b are provided on both sides of the rear diaphragm cushion 300b, and are provided at both sides of the main cushion 100 to the left and right of the main cushion 100 at regular intervals.

Therefore, when the diaphragm tether 400 is deployed, the diaphragm cushion 300 is quickly supported by avoiding interference between the diaphragm tether 400 and the main cushion 100. The load is reduced stably.

For reference, the inflator 302 may be connected to each of the front diaphragm cushion 300a and the rear diaphragm cushion 300b to supply gas to each diaphragm cushion 300 .

In addition, the inflator 102 may be connected to each of the first chamber 110 and the second chamber 120 so that gas is supplied to the main cushion 100 . Of course, only one inflator may be connected alone to the first chamber 110 or the second chamber 120 so that gas is supplied to the main cushion 100 .

On the other hand, referring to Figure 1, the main cushion 100, the upper end of the first chamber 110 and the second chamber 120 is connected to the roof of the vehicle is deployed downward; The lower ends of the first chamber 110 and the second chamber 120 are connected by a connecting chamber 130 so that the lower ends of the first chamber 110 and the second chamber 120 are deployed toward the passenger. .

For example, the first chamber 110 is deployed toward the passenger sitting on the front seat, and the second chamber 120 is deployed toward the passenger seated on the rear seat.

And, the connection chamber 130 is developed in the longitudinal direction of the vehicle, so that the front end of the communication is connected to the lower end of the first chamber 110 and the rear end of the connection chamber 130 is connected to the lower end of the second chamber 120. , the connection chamber 130 is deployed while pushing the first chamber 110 and the second chamber 120 toward the front passenger and the rear passenger, respectively.

Therefore, the first chamber 110 can be deployed in a shell shape protruding toward the passenger seated on the front seat, and the second chamber 120 can be deployed in a shell shape protruding toward the passenger seated on the rear seat. .

In addition, Figure 4 is a developed view of the state before sewing the main cushion 100 according to the present invention.

Referring to the drawings, in the present invention, the connection chamber 130 has a structure in communication with the first chamber 110 and the second chamber 120 on both sides of the main cushion 100.

That is, the connecting chamber 130 communicates and connects between both lower ends of the first chamber 110 and lower ends of the second chamber 120, so that the connecting chamber 130 is connected to the first chamber 110. It is deployed while pushing the second chamber 120 back and forth more reliably, so that the first chamber 110 and the second chamber 120 can be stably deployed in a shell shape.

For reference, although the main cushion 100 shown in the present invention shows only a structure formed of one cushion, the first chamber 110 and the second chamber 120 may be formed as a cushion structure in which they are individually provided and connected. In addition to the cushion shape, cushions of various shapes capable of implementing a shell shape may be applied as the main cushion 100.

In addition, referring to FIGS. 1 and 4, the present invention connects the upper and lower portions of the main cushion 100 to regulate the shape of the main cushion 100 to a shell shape; a shape-retaining tether 200; configured to include becomes

For example, the shape-maintaining tether 200 is a cotton-type tether, and is provided with at least one to regulate the shape of the main cushion 100, thereby deploying and maintaining the main cushion 100 in a shell shape.

In the present invention, a structure in which three shape-maintaining tethers 200 are applied to the main cushion 100 is shown. One shape-maintaining tether 200a is provided in the center of the main cushion 100, and the remaining two shape-maintaining tethers are provided. (200b) may be provided in a symmetrical structure in front and back around the shape-maintaining tether (200a) in the center of the main cushion (100).

Accordingly, referring to the shape-maintaining tether 200a provided at the center of the main cushion 100, the shape-maintaining tether 200a has an upper end connected between the first chamber 110 and the second chamber 120, and ; The lower end may be connected to the dead zone 140 formed between the connection chambers 130 on both sides.

For example, between the connecting chambers 130 on both sides, a dead zone 140 region where gas is not filled is formed on the left and right sides, and a shape-retaining tether 200a connected to the dead zone 140 along the center of the main cushion 100 Is connected to the dead zone 140.

For reference, in the case of the shape maintaining tether 200b provided before and after the main cushion 100, the upper end is connected between the first chamber 110 and the second chamber 120, and the lower end is connected to the first chamber 110. It becomes a structure connected to the inside and the inside of the second chamber 120, respectively.

Hereinafter, the deployment operation of the roof-mounted airbag according to the present invention will be described with reference to FIG. 1 .

When a collision signal is detected in front of the vehicle while the vehicle is driving, each inflator (102, 302) connected to the main cushion (100) and the diaphragm cushion (300) explodes, and the main cushion (100) and the diaphragm cushion (300) rapidly deploy downward. do.

Subsequently, as the passenger sitting on the rear seat moves toward the front of the vehicle, the rear passenger is loaded onto the rear diaphragm cushion 300b.

Accordingly, the rear diaphragm cushion 300b moves toward the main cushion 100 while absorbing the load of the passenger, and in the process of moving, the rear diaphragm cushion 300b is supported by the main cushion 100, and then the main cushion 100 It is supported by the front diaphragm cushion 300a.

At this time, the front diaphragm cushion 300a is supported by the front diaphragm tether 400a to limit the forward movement of the front diaphragm cushion 300a, thereby more effectively absorbing the passenger's load through the main cushion 100. While stably restraining passengers, it prevents the main cushion 100 from being moved like it is blown away.

As described above, when a passenger moves toward the direction of the collision during a vehicle collision and the passenger is loaded onto the diaphragm cushion 300, the diaphragm cushion 300 is supported by the diaphragm tether 400, so that the diaphragm cushion 300 Through this, a significant portion of the passenger's load is absorbed, safely reducing the impact energy transmitted to the passenger.

In particular, in a state in which the load of the passenger is reduced through the diaphragm cushion 300 loaded with the passenger, the diaphragm cushion 300 is supported by the main cushion 100 together with the passenger, and the main cushion 100 is again placed on the opposite side of the diaphragm cushion ( 300), the diaphragm tether 400 restricts the behavior of the opposite diaphragm cushion 300, thereby preventing excessive movement of the main cushion 100 due to passenger behavior, thereby safely restraining and protecting passengers. .

On the other hand, although the present invention has been described in detail only for the specific examples described above, it is obvious to those skilled in the art that various changes and modifications are possible within the scope of the technical idea of the present invention, and it is natural that these changes and modifications fall within the scope of the appended claims. .

100: main cushion
102: Inflator
110: first chamber
120: second chamber
130: connection chamber
140: Dead Zone
200: shape-retaining tether
300: diaphragm cushion
300a: front diaphragm cushion
300b: rear diaphragm cushion
302: Inflator
310: fill chamber
320: dead zone
400: diaphragm tether
400a: front diaphragm tether
400b: rear diaphragm tether
500: roof panel

Claims (14)

A main cushion that expands and deploys towards passengers between facing passengers;
A diaphragm cushion deployed between the main cushion and passengers in the roof of the vehicle;
A roof-mounted airbag comprising: a diaphragm tether connected between a vehicle body and a diaphragm cushion and supporting the diaphragm cushion from the movement of a passenger loaded onto the diaphragm cushion. The method of claim 1,
The roof-mounted airbag, characterized in that the diaphragm cushion is deployed in a shape that blocks the main cushion so that the passenger preferentially contacts the diaphragm cushion. The method of claim 1,
The roof-mounted airbag, characterized in that the diaphragm cushion is deployed in a shape in which gas is entirely filled therein. The method of claim 1,
The diaphragm cushion is a roof-mounted airbag, characterized in that the fill chamber is deployed in a shape filled with gas along the rim, and a dead zone is formed in the center where gas is not filled. The method of claim 1,
The roof-mounted airbag, characterized in that the diaphragm cushion is spaced apart from the main cushion and deploys downward. The method of claim 1,
The diaphragm tether has an upper end connected to the roof of the vehicle and a lower end connected to the lower end of the diaphragm cushion. The method of claim 6,
A roof-mounted airbag according to claim 1 , wherein an upper end of the diaphragm tether is connected to a roof panel on the opposite side of the diaphragm cushion provided with the main cushion interposed therebetween. The method of claim 1,
The diaphragm tether is connected to a part that does not come into contact with the passenger. The method of claim 1,
The diaphragm tether is a roof-mounted airbag, characterized in that deployed in a shape surrounding the main cushion on both sides of the main cushion. The method of claim 9,
The roof-mounted airbag, characterized in that the diaphragm tether is deployed apart from the main cushion. The method of claim 1,
The main cushion,
upper ends of the first chamber and the second chamber are connected to the roof of the vehicle and deployed downward;
The roof-mounted airbag according to claim 1 , wherein the lower ends of the first chamber and the second chamber are connected by a connecting chamber so that the lower ends of the first chamber and the second chamber are deployed toward the occupant. The method of claim 11,
The roof-mounted airbag according to claim 1, wherein the connection chamber communicates with the first chamber and the second chamber at both sides of the main cushion. The method of claim 11,
A roof-mounted airbag comprising a shape-retaining tether connecting the upper and lower parts of the main cushion to regulate the shape of the main cushion into a shell shape. The method of claim 13,
The shape-retaining tether,
the upper end is connected between the first chamber and the second chamber;
A roof-mounted airbag characterized in that the lower end is connected to the dead zone formed between the two connecting chambers.

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