WO2018174306A1

WO2018174306A1 - Side curtain airbag for vehicle

Info

Publication number: WO2018174306A1
Application number: PCT/KR2017/002960
Authority: WO
Inventors: 정대창; 권태익
Original assignee: 아우토리브 디벨롭먼트 아베
Priority date: 2017-03-20
Filing date: 2017-03-20
Publication date: 2018-09-27

Abstract

A side curtain airbag for a vehicle is provided. The airbag comprises: an inner panel facing the interior of a vehicle; and an outer panel opposite the inner panel and facing the interior of the vehicle. The airbag is configured such that a plurality of chambers are formed along the fore-and-aft direction of the vehicle by a plurality of chamber walls defined along the fore-and-aft direction of the inner panel and the outer panel, in which an overlapping portion is formed in the front portion of the inner panel and the outer panel and constitutes a head chamber corresponding to a head of a passenger in the vehicle among the plurality of chambers so that an expansion thickness of the head chamber is relatively larger than an expansion thickness of the plurality of other chambers, whereby the head chamber, which is inflated in the event of a vehicle collision, pushes the head of the passenger toward the interior of the vehicle. With this configuration, the airbag blocks a passenger's head at an initial stage in the event of a vehicle collision to prevent the passenger's head from ejecting and rotating from the front and side of a vehicle, thereby reducing injuries to the passenger's head and neck.

Description

Side curtain airbag of car

The present invention relates to an automotive side curtain airbag configured to expand and deploy along an interior side of an automobile in the event of a vehicle crash or rollover.

Most automobiles are equipped with air bags as vehicle safety devices. Companies involved in automotive development are adopting continuous stability improvements as a key development guide. Accordingly, new airbags are constantly being developed.

Criteria for evaluating vehicle safety vary by country, and companies are embarking on product development to ensure that products meet the criteria for evaluation in multiple countries. In the United States, which has the largest automobile in the world, for example, the Federal Motor Highway Traffic Safety Standards (FMVSS) are established by the National Highway Traffic Safety Administration (NHTSA). The proposed rulemaking notice for the FMVSS issued by the National Highway Traffic Safety Administration proposes a requirement aimed at "reducing the likelihood of passengers protruding from the vehicle through the side windows by using an overhang mitigation system in the event of a side impact or rollover". It is becoming. The requirement can be met by providing a curtain airbag as a device intended to reduce protrusion from the motor vehicle.

Automotive side curtain airbags are installed horizontally at the top of the car interior to be deployed in the event of a car crash. Side curtain airbags are effective not only on the side of a car but also in case of a rollover, providing passengers with high levels of stability.

When the inflator is activated by a crash signal, the gas exploded in the inflator flows into the curtain airbag to inflate the curtain airbag, and the inflated curtain airbag is deployed inside the vehicle to protect the passenger from car collision.

The National Highway Traffic Safety Administration (NHTSA) published a report investigating the death rate for non-protruding drivers wearing belts in front crashes.

The report concluded that after an extremely severe crash, the largest number of deaths occurred in collisions involving a weak structural engagement between the car and a collision partner, such as a corner impact, a slope impact or a narrow object impact.

In response to these investigations, NHTSA has begun investigating test methods to mitigate the eventual risks associated with car crashes associated with vulnerable structural problems. The study found that the offset impact between a research moving deformable barrier (RMDB) and a stationary vehicle was determined by vehicle crush, occupant kinematics, and risk of injury seen in the collision between cars. Proved to be reproducible.

NHTSA introduced the Small Overlap Impact (SOI) test, and a recent study called additional oblique RMDB-to-vehicle crash tests (“Oblique crash tests”). Is added).

NHTSA assumes 25% or less of the overlap in the width direction of the collision obstacle and the vehicle in the small overlap impact test and 64 km / h in the relative speed, and 35% of the overlap in the width direction of the collision obstacle and the vehicle in the slope collision test. The angle between the collision obstacle and the car is assumed to be 15 degrees and the relative speed is 90 km / h.

As described above, when an impact is applied to the outside of the front of the vehicle, the head of the driver moves to the front and collision side while moving and rotating into the gap between the curtain airbag and the front airbag of the vehicle, such as the driver's seat or the passenger seat airbag, and thereby the interior of the vehicle. Impingement to the structure can cause catastrophic damage to the driver's head and neck.

[Preceding technical literature]

(Patent Document 1) United States Patent Number: US 7,967,334

(Patent Document 2) US Patent Publication No. US 2012/0256401

An object of the present invention is to increase the inflated thickness of the front portion of the side curtain airbag that expands and expands along the inside of the side of the vehicle in the event of a vehicle collision, to collide with the front airbag of the vehicle to rotate while moving toward the front and impact side of the vehicle It is to provide a side curtain airbag for a vehicle that can initially block the head of the passenger.

Another object of the present invention is to provide a side curtain airbag for a vehicle that can prevent the head of the passenger from rotating while moving into a gap between the front airbag and the curtain airbag of the vehicle in the event of a vehicle crash, thereby reducing the injury of the head and neck of the passenger. To provide.

According to an embodiment of the present invention to achieve the above object, the inner panel facing the interior of the vehicle; And an outer panel facing the inner panel and facing toward the inside of the side of the vehicle, the outer panel being positioned along the front and rear directions of the vehicle by a plurality of chamber walls defined along the front and rear directions of the inner panel and the outer panel. A plurality of chambers are formed, and a plurality of chambers having different expansion thicknesses of the head chamber are formed by forming overlapping portions in the front portion of the inner panel and the outer panel which form a head chamber corresponding to the head of the passenger in the vehicle. It is configured to increase relatively than the expansion thickness of the chamber, and the overlapping portion is formed by cutting the upper and lower edges of the inner and outer panels facing each other, after forming the cut portion, the front and rear ends of the cut portion is moved closer to each other There is provided a side curtain airbag for a motor vehicle formed in such a manner as to connect the front and rear portions of the cut portion to each other.

Fold the inner panel and the outer panel protruding in a direction protruding from the inner panel along the longitudinal center line of the cut portion so that the front and rear ends of the cut portion are adjacent to each other, and then the front and rear portions of the cut portion may be connected to each other. Can be.

The cutting unit may further include a reinforcing member overlapping with the front and rear parts of the front and rear parts of the cut part and connected with the front and rear parts of the cut part through a sewing line.

After the inner and outer panel portions corresponding to the cut portion are folded and overlapped so that the rear portion of the cut portion overlaps the inner panel of the front portion of the cut portion, the overlapping front and rear portions of the cut portion may be connected to each other. have.

A reinforcement panel may be interposed between the overlapped front and rear portions of the cut portion to sew together with the overlapped front and rear portions of the cut portion through a sewing line.

The cutting part includes a front cutting part and a rear cutting part disposed in the front and rear directions on the inner and outer edges of the airbag and at the edges of the non-cutting part, and the front part of the front cutting part and the rear part of the rear cutting part. Is superimposed on the outside of the non-cutting portion may be sewn through the sewing line.

According to an embodiment of the present invention, the overlapping part forms a pair of cutouts by cutting the upper and lower edges of the inner and outer panels facing each other such that a part of the upper and lower walls of the airbag is included. Fold a portion of the inner panel corresponding to the cut portion inside, fold a portion of the outer panel corresponding to the cut portion inside so that the front and rear ends of the cut portion are adjacent to each other, and then reinforce the front and rear portions of the cut portion. By overlapping the panels, the front and rear portions of the cut portion and the reinforcement panel may be connected to each other through a sewing line.

A portion of the inner and outer panels corresponding to the proximal end of the overlapping portion of the airbag is connected through a sewing line to form a first non-expansion region, and a portion of the inner and outer panels corresponding to the overlapping portion is connected to the sewing line. Can be connected to form a second non-expansion region.

According to one embodiment of the present invention, the inflation thickness of the head chamber in contact with the head of the passenger of the curtain airbag is relatively increased compared to the other chambers to initially inhibit the head of the passenger, and thus the head of the passenger is caused by friction of the driver's seat airbag. It is possible to prevent rotation and to prevent the head of the passenger from protruding toward the front and sides of the vehicle.

According to one embodiment of the present invention, the inflation thickness of the head chamber in contact with the head of the passenger of the curtain airbag is relatively increased compared to other chambers to reduce the gap between the curtain airbag and the driver's seat airbag, thereby reducing the clearance between the passenger's head and the front of the vehicle. Rotation can be prevented while protruding toward the side.

According to an embodiment of the present invention, the front of the curtain airbag is gently curved toward the inside of the vehicle to accommodate the head of the passenger protruding toward the front side of the vehicle to prevent the passenger's head from being injured.

According to an embodiment of the present invention, the front of the curtain airbag may support the front of the inflated driver's seat airbag to prevent the head of the passenger from protruding toward the front side of the vehicle through the gap between the inflated curtain airbag and the driver's seat airbag. have.

1 is a side view showing the configuration of a side curtain airbag of an embodiment of the present invention.

FIG. 2 is a partial side view of a side curtain airbag in a non-inflated state, showing an unfolded state of the overlap of FIG. 1.

FIG. 3 is an enlarged view of the "III" display unit of FIG. 1 enlarged.

4 is a side view illustrating a state in which the side curtain airbag is inflated according to an embodiment of the present invention.

5 is a plan view illustrating a state in which the side curtain airbag is inflated according to an embodiment of the present invention.

6 is a plan view of the inside of a vehicle showing a state in which the side curtain airbag is inflated in the driver's seat side of the vehicle according to an embodiment of the present invention.

Figure 7a is a view showing a state in which the inner panel and the outer panel for the side curtain airbag of the present invention is prepared.

FIG. 7B is a view illustrating a state in which a pattern for the inflatable chamber is formed after arranging the inner and outer panels of FIG. 7A to face each other.

7C is a side view illustrating a state where cutouts are formed at upper and lower edges of a side curtain airbag according to an exemplary embodiment of the present invention.

Figure 7d is a side view showing a side curtain airbag having an overlap according to an embodiment of the present invention.

FIG. 7E is a partial perspective view of a side curtain airbag with overlaps according to one embodiment of the present invention. FIG.

8 is a side view showing the configuration of a non-inflated side curtain airbag according to another embodiment of the present invention.

FIG. 9 is a partial cross-sectional view illustrating a state in which the overlapping part of FIG. 8 is unfolded. FIG.

FIG. 10 is an enlarged view of the “” display unit of FIG. 8.

11 is a perspective view of an inflated side curtain airbag according to another embodiment of the present invention.

12 is a plan view illustrating the inside of a driver's seat of an automobile provided with an inflated side curtain airbag according to another exemplary embodiment of the present invention.

13A is a view illustrating a state in which an inner panel and an outer panel for a side curtain airbag according to another embodiment of the present invention are prepared.

FIG. 13B is a side view illustrating a state in which a pattern for an inflatable chamber is formed after the inner and outer panels of FIG. 13A are disposed to face each other, and cuts are formed at upper and lower edges of the curtain airbag.

13C is a partial perspective view illustrating a configuration of a side curtain airbag in which an overlapping portion is formed according to another embodiment of the present invention.

FIG. 13D is a partial plan view of the curtain airbag viewed along arrow 13D of FIG. 13C.

FIG. 13E is a partial cross sectional view taken along line 13E-13E in FIG. 13C.

14 is a partial side view of a side curtain airbag having an overlap according to another embodiment of the present invention.

FIG. 15 is a partial side view illustrating an unfolded state of the overlapping part of FIG. 14.

FIG. 16 is a cross-sectional view taken along the line VI-VI of FIG. 14.

FIG. 17 is a partial perspective view illustrating the inflated side curtain airbag of FIG. 14.

18 is a partial side view of a side curtain airbag having an overlap according to another embodiment of the present invention.

19 is a partial side view illustrating a state in which the overlapping part of FIG. 18 is unfolded.

20 is a partial side view illustrating a state in which the inner and outer panels of the airbag corresponding to the cutout of FIG. 18 are folded in;

FIG. 21 is a sectional view taken along the line VI-XI of FIG. 20;

22 is a partial side view of a side curtain airbag having an overlap according to another embodiment of the present invention.

FIG. 23 is a partial side view of the side curtain airbag showing a state in which the overlapping portion of FIG. 22 is folded forward. FIG.

FIG. 24 is a cross-sectional view taken along the line XIV-XIV of FIG. 22.

FIG. 25 is a partial perspective view illustrating the inflated side curtain airbag of FIG. 22.

FIG. 26 is a top view of the side curtain airbag of FIG. 25.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention in more detail. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the embodiments are intended to complete the disclosure of the present invention and to those skilled in the art to fully understand the scope of the invention. It is provided to inform you.

Hereinafter, reference numeral "F" denotes the front of the vehicle to which the side curtain airbag of the present invention is applied, reference numeral "R" denotes the rear of the automobile, and the front and rear directions of the automobile may be expressed in the horizontal direction. The direction orthogonal to the horizontal direction may be expressed in a vertical direction or in an up and down direction.

1 is a side view showing the configuration of a side curtain airbag (hereinafter, referred to as "curtain airbag") of an automobile according to an embodiment of the present invention.

Referring to FIG. 1, the airbag 10 includes an inner panel 11 and an outer panel 13 facing each other. When the airbag is inflated, the inner panel 11 faces the inside of the vehicle and the outer panel 13 faces the side of the vehicle. The airbag 10 is formed of a material having airtightness and flexibility. The upper wall 21, the lower wall 22, the front wall 23, and the rear wall 24 are formed along edges of the inner and

outer panels

11 and 13 that face each other, and the gas flows into the inside thereof. The basic chamber 15 is formed.

A plurality of intermediate chamber walls 30 formed along the front and rear directions on the inner and

outer panels

11 and 13 in which the basic chamber 15 is defined by upper, lower, front and

rear barriers

21, 22, 23 and 24 are defined. A series of chambers 60 is defined by.

The intermediate chamber wall 30 may extend along the approximately longitudinal direction of the airbag 10 from the top wall 21 or the bottom wall 22.

According to an embodiment of the present invention, the intermediate chamber wall 30 is a downward chamber wall 31 and a downward chamber wall 31 extending downward from the upper wall 11 at a position having a distance from the front of the air bag 10. And a plurality of upward chamber walls 32 disposed rearwardly from and extending upward from the bottom wall 22 of the curtain airbag 10. The intermediate chamber wall 30 forms a plurality of chambers in which the airbag 10 is expandable along the front and rear directions thereof. The position and shape of the intermediate chamber walls 30 can be variously modified. The intermediate chamber wall 30 may be formed in the front and rear directions F and R of the curtain airbag 10 in addition to being formed along the substantially longitudinal direction of the curtain airbag 10.

According to an embodiment of the present invention, the curtain airbag 10 includes an overlapping portion formed by a folded portion F1 folded to protrude from the inner panel 11 between the downward chamber wall 31 and the upward chamber wall 32 ( O1).

The chamber 61 defined by the downward chamber wall 31 and the upward chamber wall 32 may be in a position that substantially covers the head of the passenger when inflated.

Hereinafter, for ease of explanation, the chamber 61 defined by the downward chamber wall 31 and the upward chamber wall 32 is hereinafter referred to as “head chamber”, and the chamber 63 on the rear side of the head chamber 61 is described. Is referred to as "rear chamber", and the chamber in front of the head chamber 61 is referred to as "front chamber".

In the airbag non-expanded state, the horizontal length of the head chamber 61 including the overlap portion O1 may be formed to be approximately similar to the horizontal length of the rear chamber 63. By this configuration, when the airbag is inflated, if the overlap portion O1 of the head chamber 61 is fully unfolded, the inflation thickness of the head chamber 61 may be greater than the inflation thickness of the rear chamber 63.

FIG. 2 is a partial side view of a side curtain airbag in a non-inflated state showing an unfolded state of the overlapping portion of FIG. 1, and FIG. 3 is an enlarged view of an enlarged "III" display portion of FIG.

1 to 3, the overlapping portion O1 of the head chamber 61 cuts the upper and lower edge portions of the upper and

lower walls

21 and 22 of the curtain airbag 10 by a predetermined horizontal length, thereby obtaining a pair of pairs. A portion of the inner and

outer panels

11 and 13 of the curtain airbag 10 corresponding to the cut portion 40 is formed to form the cut portion 40 and the front and

rear ends

41 and 43 of the cut portion 40 are adjacent to each other. Fold in the longitudinal direction, that is, the

inner panel

11 and 13 are folded along the longitudinal center line V of the cutout portion 40 to form the folded portion F1 and face each other about the folded portion F1. The overlap portion O1 is formed. At this time, the overlapping portion O1 has a shape protruding from the inner panel 11. In FIGS. 1 and 3, the fold F1 is shown folded over to the rear R of the airbag 10.

The reinforcing members 50 overlap the front and

rear portions

45 and 47 of the cut portions 40 disposed adjacent to each other, and the front and

rear portions

45 and 47 of the cut portions 40 through the sewing line S1. And reinforcing members 50 may be coupled together. The reinforcing member 50 may be formed as a strip member having the same material as the inner and

outer panels

11 and 13. The reinforcing member 50 serves to complement the bonding force of the front and

rear parts

45 and 47 connected through the sewing line S1, and the gas supplied between the inner and

outer panels

11 and 13 is leaked. Can be prevented.

4 is a side view illustrating an inflated state of a side curtain airbag according to an embodiment of the present invention, and FIG. 5 is a plan view illustrating an inflated side curtain airbag according to an embodiment of the present invention.

1, 4, and 5, when a vehicle collides, gas generated from an inflator (not shown) is divided into a plurality of chambers 60 between the inner and

outer panels

11 and 13 of the airbag 10. The airbag 10 expands and expands from the top of the vehicle toward the bottom of the vehicle to cover the inside of the side of the vehicle.

According to an embodiment of the present invention, when the airbag is inflated, the overlapping portion 01 formed on the head chamber 61 side is unfolded around the cutting portion 40 to which the reinforcing member 50 is coupled. As a result, the inflation thickness D2 of the head chamber 61 is greater than the inflation thickness D1 of the other chamber, for example the rear chamber 63. As a result, the head chamber 61 has a shape that protrudes relatively more toward the inner side I of the vehicle than the other chambers, for example, the rear chamber 63. Therefore, it is possible to initially prevent the head of the passenger during the collision of the car and to increase the head protection effect by pushing the head of the passenger to the inside (I) of the vehicle relatively.

Curtain airbag 10 according to an embodiment of the present invention is deployed along the inner side of the vehicle at the time of collision or overturning of the vehicle to perform the basic function of the curtain airbag (10). For example, the curtain airbag 10 prevents the passenger from protruding outside through the window of the vehicle during a side collision of the vehicle, or protects the head, shoulder chest, etc. of the passenger.

Curtain airbag 10 according to an embodiment of the present invention when the impact is applied outside the front of the vehicle together with the front airbag of the vehicle, such as the driver's seat airbag 1 or the passenger seat airbag (hereinafter referred to as "eccentric frontal collision") It can also be useful. Hereinafter, a description will be given by taking an example of protecting a passenger by the interaction between the driver's seat airbag 1 and the curtain airbag 10 of the automobile.

Eccentric frontal collisions may include all cases in which a collision obstacle collides outside of a vehicle. That is, the collision obstacle may include colliding with the outside of the front of the vehicle in the direction along the width direction of the vehicle. The eccentric frontal collision may include a vehicle colliding directly in front of the collision obstacle without tilting, or the vehicle colliding at a predetermined angle with respect to the collision obstacle.

For example, eccentric frontal collisions may include collisions overlapping with less than 50% of the outside of the front of the vehicle in a direction along the width direction of the vehicle, with a predetermined angle, for example 15 degrees, relative to the collision obstacle. And less than collision.

An eccentric frontal collision is, for example, when the front left side of the vehicle is inclined at a predetermined angle with respect to the collision obstacle, and a part of the front left side of the vehicle overlaps with the collision obstacle so that an impact (hereinafter referred to as "left side impact") It includes the case where it is added.

Eccentric frontal collision is when the front right side of the vehicle is inclined at a predetermined angle with respect to the collision obstacle, and a part of the front right side of the vehicle overlaps with the collision obstacle and an impact is applied (hereinafter referred to as “right side impact”). It includes. The collision obstacle may be a stationary or movable object and the weight may be the same, heavier or lighter than the weight of the vehicle.

The curtain airbag 10 according to the present invention is applicable to a collision in which at least 50% of the front of the collision object and the front of the vehicle overlap in addition to the eccentric frontal collision described above.

Referring to Fig. 6, for example, when an impact is applied to the left side of the front of the vehicle (hereinafter referred to as "left collision"), the driver's seat airbag 1 and the curtain airbag 10 are inflated. In the left collision, the passenger's head H moves towards the front and side of the vehicle while colliding with the center or center-left of the driver's airbag 1, and the friction between the passenger's head H and the driver's airbag 1 By the head (H) of the passenger can be rotated. The head H of the passenger then rotates while moving into the gap between the driver's seat airbag 1 and the curtain airbag 10. At this time, the head chamber 61 of the curtain airbag 10 according to an embodiment of the present invention is greater than the expansion thickness of the other chamber, for example, the rear chamber 63, the head of the passenger moving toward the front, side of the vehicle (H) can be initially prevented, and the head H of the passenger can also be prevented from being initially rotated by the friction between the driver's seat airbag 1 and the passenger head H. Therefore, the injury value of the head and neck of the passenger can be effectively reduced.

On the other hand, the head chamber 61 is in contact with the driver's seat airbag 1 as it is further inflated toward the inner side (I) of the vehicle can support the driver's seat airbag 1 more firmly. As a result, the head H of the passenger can be prevented from rotating while protruding toward the front and side of the vehicle through the gap between the curtain airbag 10 and the driver's seat airbag 1. Accordingly, it is possible to prevent the passenger's head H from being injured by hitting an internal structure of the vehicle's front side, for example, the inner surface of the automobile door, the front pillar, and the instrument panel.

Next, a manufacturing process of the curtain airbag configured as described above will be described.

FIG. 7A is a view illustrating a state in which an inner panel and an outer panel for a side curtain airbag of the present invention are prepared, and FIG. 7B is disposed to face the inner and outer panels of FIG. 7A, and then a pattern for an inflatable chamber is formed. It is a figure which shows the state.

Referring to FIG. 7A, the inner and

outer panels

11 and 13 of the curtain airbag 10 are prepared by cutting a fabric formed of a material having flexibility and airtightness into a substantially rectangular shape.

Referring to FIG. 7B, after the inner and

outer panels

11 and 13 overlap each other, the upper, lower, front and

rear barriers

21, 22, and 23 are along the edges of the inner and

outer panels

11 and 13. And 24 to define the base chamber, and the

intermediate chamber walls

31 and 32 are formed in the middle of the base chamber to form the head chamber 61, the rear chamber 63, the front chamber 65, and the like. . The chamber walls may be formed using a sewing line, thermal welding, laser welding, adhesive, or the like. In another embodiment, the chamber walls may be woven together with the inner and

outer panels

11 and 13 by a one-piece woven method. .

Referring to FIG. 7C, for example, the cut portions 40 are formed at upper and lower edges of the curtain airbag 10 corresponding to the head chamber 61. The cut portion 40 is formed at the upper and lower edges of the curtain airbag 10 outside the upper wall 21 and the lower wall 22 of the airbag. The cut portions 40 are formed on the inner and

outer panels

11 and 13 which overlap. The cutting part 40 is cut to have an approximately rectangular groove shape with one side open, and has front and

rear ends

41 and 43 symmetric about the vertical center line V, and front and rear ends adjacent to the rear ends 41 and 43. ,

Rear portions

45, 47.

7C and 7D, a portion of the head chamber 61 of the curtain airbag 10 corresponding to the cut portion 40 is folded along the longitudinal center line V of the cut portion 40 to protrude from the inner panel 11. The overlap portion O1 is formed. That is, the two sides of the longitudinal center line V of the cut portion 40 are pushed in the front and rear (F, R) directions so as to face the vertical center line V, respectively, so that both sides of the three center lines V face each other. The part O1 is formed.

When the overlapped portion O1 is formed, the front and

rear ends

41 and 43 of the cut portion 40 are adjacent to each other, and the front and

rear ends

41 and 43 of the cut portion 40 are adjacent to each other. The reinforcing member 50 is superposed on the outer side of the front and

rear portions

45 and 47. The front and

rear portions

45 and 47 of the cut portion 40 overlapped with the reinforcing member 50 are sewn by the sewing line S1.

Referring to FIG. 7E, the front and

rear portions

45 and 47 of the cutting portion 40 are connected to the front and

rear portions

41 and 43 of the cutting portion 40 together with the reinforcing member 50 through the sewing line S1. Maintains the state adjacent to each other, the overlapping portion (O1) superimposed on each other by the folded portion (F1) maintains the state protruding from the inner panel 11 of the airbag (10).

Next, a side curtain airbag of a vehicle according to another embodiment of the present invention will be described. The same components as those described above are designated by the same reference numerals, and redundant descriptions are omitted.

FIG. 8 is a side view illustrating a configuration of a non-inflated side curtain airbag according to another exemplary embodiment of the present invention, FIG. 9 is a view illustrating a partially expanded state of the overlapping portion of FIG. 8, and FIG. 10 is a cross-sectional view of FIG. 8. It is an enlarged view of a display part.

8 to 10, the head chamber 61 of the airbag 10 corresponding to the cut portion 40 so that the rear portion 47 of the cut portion 40 overlaps the front portion 45 of the cut portion 40. Fold the part. Fold the front portion of the longitudinal center line V of the cut portion 40 so that the rear portion 47 of the cut portion 40 overlaps the front portion 45 of the cut portion 40. When the air bag 10 moves in the front (F) direction, the two folded portions F2 and F3 are formed substantially, and the overlap portion O2 is formed. The overlapping portion O2 is placed on the inner panel 11.

A reinforcing member 50 is interposed between the front and

rear portions

45 and 47 of the cut portions 40 overlapping each other, and the

rear portions

45 and 47 and the reinforcing members 50 are sewn before the cut portions 40. It is sewn together through the line S3.

8 to 11, the curtain airbag 10 according to another embodiment of the present invention is an airbag with a hinge point on the front and

rear portions

45 and 47 of the cut portions 40 which are overlapped with each other when inflated. The front chamber 65 of 10 is gently bent and expanded to the inner side I of the vehicle.

When the airbag is inflated, the inflation thickness D3 of the head chamber 61 is greater than the inflation thickness D1 of the other chamber, for example the rear chamber 63, so that the head chamber 61 is relatively inward of the vehicle I compared to the other chambers. Protrude toward the head to restrain the head of the passenger relatively quickly.

8 to 12, the curtain airbag 10 according to another embodiment of the present invention, when inflated, the front and

rear portions

45 and 47 of the cut portions 40 connected to each other by overlapping the curtain airbag 10. As a hinge point, the front end portion of the curtain airbag 10, for example, the front chamber 65, naturally bends toward the inner side I of the vehicle.

When an impact is applied to the left side of the front of the vehicle, the driver's seat airbag 1 and the curtain airbag 10 are inflated. In the left collision, the passenger's head H moves toward the front and side of the vehicle while colliding with the center or center-left side of the driver's seat airbag 1.

At this time, the head chamber 61 of the curtain airbag 10 according to an embodiment of the present invention is larger than the inflation thickness D1 of the other chamber, for example, the rear chamber 63 to move toward the front and side of the vehicle. The head H of the passenger can be initially prevented and the head H of the passenger can also be prevented from being rotated by the friction between the driver's seat airbag 1 and the head H of the passenger. Therefore, the injury value of the head and neck of the passenger can be effectively reduced.

On the other hand, the head chamber 61 can be in contact with the front of the driver's seat airbag 1 as it is further inflated toward the inner side (I) of the vehicle can support the driver's seat airbag 1 more firmly. As a result, the head H of the passenger can be prevented from protruding toward the front and side of the vehicle through the gap between the curtain airbag 10 and the driver's seat airbag 1. Accordingly, it is possible to prevent the passenger's head H from being injured by hitting an internal structure of the vehicle's front side, for example, the inner surface of the automobile door, the front pillar, and the instrument panel.

According to an embodiment of the present invention, the head H of the passenger is spaced between the curtain airbag 10 and the driver's seat airbag 1 by the front chamber 65 of the curtain airbag 10 bent toward the inside of the vehicle. Even if protrudes through the head (H) of the passenger (H) can be prevented from injuring the head (H) of the passenger hit the internal structure of the vehicle.

According to an embodiment of the present invention, the front chamber 65, which is bent into the interior I of the vehicle, for example, supports the front portion of the inflated driver's seat airbag 1 so that the curtain airbag 10 and the driver's seat airbag 1 It is possible to prevent the head (H) of the passenger from protruding into the gap between the).

The following describes a manufacturing process of the side curtain airbag according to another embodiment of the present invention configured as described above.

FIG. 13A is a view illustrating a state in which an inner panel and an outer panel for a side curtain airbag are prepared according to another embodiment of the present invention, and FIG. 13B is an inflatable chamber after arranging the inner and outer panels of FIG. 13A to face each other. Pattern is formed for, is a side view showing a state where the cut portion is formed on the upper, lower edge of the curtain airbag.

Since the configuration of FIGS. 13A and 13B is substantially the same as the configuration of FIGS. 7A to 7C, the same reference numerals are used, and redundant descriptions are omitted.

FIG. 13C is a partial perspective view illustrating a configuration of a side curtain airbag having overlapping portions according to another embodiment of the present invention, FIG. 13D is a partial plan view of the curtain airbag viewed along arrow 13D of FIG. 13C, and FIG. 13E is a view of FIG. 13C Some cross-sectional views taken along lines 13E-13E.

Referring to FIGS. 13B and 13C to 13E, the front portion of the head chamber portion of the airbag 10 adjacent to the longitudinal centerline V around the longitudinal centerline V of the cutout portion 40 is folded and folded portion F2. To form the folded portion F3 by overlapping the front portion 45 of the cut portion 40 while moving the rear portion 47 of the cut portion 40 in the forward (F) direction of the airbag 10. In this manner, the folded portions F2 and F3 form an overlapping portion O2 in the inner and

outer panels

11 and 13 of the airbag 10, for example, in the head chamber 61.

The reinforcing member 50 is interposed between the front and

rear portions

45 and 47 of the cut portions 40 overlapping each other, and the front and

rear portions

45 and 47 and the reinforcing members 50 of the cut portions 40 are Sewing together through the sewing line (S3).

14 is a partial side view of the side curtain airbag having an overlap according to another embodiment of the present invention, and FIG. 15 is a partial side view showing a state in which the overlap of FIG. 14 is deployed.

14 and 15, the side curtain airbag 10 according to another embodiment of the present invention is forward and backward with respect to the non-cut portions 81 at the upper and lower edges of the airbag 10. ), Two pairs of

cutouts

140 and 240, hereinafter referred to as "front cutout 240 and rear cutout 140".

According to another embodiment of the present invention, the rear end portion 243 of the front cut portion 240 and the rear end portion 143 of the rear cut portion 140 is centered on the non-cut portion 81 so as to be located outside the non-cut portion 81. Thus, the parts corresponding to the front cutout portion 240 and the rear cutout portion 140 of the inner and

outer panels

11 and 13 are opposed to the side where the non-cut portion 81 is located. In this way, the parts corresponding to the front cutout portion 240 and the rear cutout portion 140 of the inner and

outer panels

11 and 13 are pushed to face the non-cut portion 81 so that the airbags are formed around the non-cut portion 81. An overlap portion O3 protruding toward the inner side of 10 is formed.

FIG. 16 is a cross-sectional view taken along the line VI-VI of FIG. 14.

14 to 16, the front portion 245 of the front cutout portion 240 and the rear portion 147 of the rear cutout portion 140 overlap the outside of the non-cut portion 81. The front portion 245 of the overlapped front cutout 240 and the rear portion 147 of the back cutout 140 are coupled to each other via a sewing line S5. According to the present invention, since the front portion 245 of the front cut portion 140 and the rear portion 147 of the rear cut portion 140 are overlapped by the non-cut portion 81, the reinforcing member 50 described above may be further provided. no need.

14 to 17, the head chamber 61 is expanded while the overlap portion O3 is unfolded in the front and rear (F, R) directions of the airbag 10 about the non-cut portion 81. At this time, the front portion 245 of the front cut portion 140 and the rear portion 147 of the rear cut portion 140 are sewn to the non-end portion 81 through the sewing line S5, so that the head chamber 61 is another chamber 63. Protrudes inward (I) relatively, relative to (65).

Referring to FIG. 18, the overlapping portion O4 has the inner panel 11 and the outer panel 13 of the airbag 10 inserted therein, respectively, and then the reinforcement panel 50 is connected to the airbag through the sewing line S7. 10) is completed by connecting to the upper and lower edges.

18 and 19, the upper and lower edges of the airbag 10 corresponding to the head chamber 61 are cut to form a cutout 340. At this time, a part of the upper and

lower walls

21 and 22 of the airbag 10 are cut together.

20 is a partial side view illustrating a state in which the inner and outer panels of the airbag corresponding to the cutout portion of FIG. 18 are folded in, and FIG. 21 is a cross-sectional view taken along the line VII-XI of FIG. 20.

20 and 21, a portion of the inner panel 11 corresponding to the cutout 340 is folded in to form an inner overlapping portion 11a, and the cutout 340 of the outer panel 13 corresponding to the cutout 340 is formed. A portion of the inner overlapping portion 13a is folded inward so that the front and

rear ends

341 and 343 of the cut portion 340 are adjacent to each other.

18 and 20, after the front and

rear ends

341 and 343 of the cut portion 340 are adjacent to each other, the reinforcing panel 50 is overlapped with the front and

rear portions

345 and 347 of the cut portion 340. The front and

rear portions

345 and 347 of the reinforcement panel 50 and the cut portion 340 are connected to each other through the sewing line S7. The sewing line S7 is re-sewn a portion of the upper and

lower walls

21 and 23 of the airbag 10 cut in the cutting process of the cutting unit 340 to be supplied into the inner and

outer panels

11 and 15. Prevents gas leaks

22 is a partial side view of a side curtain airbag having an overlap according to another embodiment of the present invention, FIG. 23 is a partial side view of the side curtain airbag showing a state in which the overlap of FIG. 22 is folded forward, and FIG. 24 is shown in FIG. A cross-sectional view taken along the lines XIV-XIV of.

22 to 24, an inner and outer panel corresponding to a portion where the overlap portion 05 of the inner and

outer panels

11 and 13 of the airbag 10 starts, that is, the near end of the overlap portion 05 ( A portion of the 11 and 13 is connected through the sewing line S9 to form a first non-expansion region 83, and the inner and outer panels 11 corresponding to the overlapping portions O5, for example, the rear overlapping portions. , 13 is connected through the sewing line (S11) to form a second non-expansion region (85).

The overlap portion 05 is configured similarly to the configuration of FIGS. 1 to 4 and may be manufactured according to the method of FIGS. 7A to 7E. Therefore, detailed description of the configuration and method will be omitted.

The first and second

non-expansion regions

83 and 85 as described above may also be applied to the overlapping portions O2, O2, O3, and O4.

FIG. 25 is a partial perspective view illustrating an inflated state of the side curtain airbag of FIG. 22, and FIG. 26 is a plan view of the side curtain airbag of FIG. 25.

25 and 26, the

non-expansion regions

83 and 85 allow the head chamber 61 to thin the inflation thickness in the front and rear (F, R) directions of the airbag 10, thereby relatively reducing the weight of the vehicle. Further protruding toward the inner side (I), the head chamber 61 may be configured to be flowable in the (F, R) direction before and after the airbag 10.

With this configuration, the passenger primarily blocks the head or shoulder from moving forward while in contact with the head or shoulder of the passenger sharply forward in the event of a car crash.

On the other hand, when the head chamber 61 flows to the front of the vehicle due to the collision force of the passenger's head or shoulders, the gap between the inflated driver's seat airbag and the driver's head is blocked so that the passenger's head is placed between the driver's seat airbag and the curtain airbag. Stop rotation by moving to the gap. As a result, the head of the passenger can be prevented from hitting the front internal structure of the vehicle, such as the inner side of the car, the front pillar of the car, or the instrument panel, thereby reducing the injury of the head and neck of the passenger. The flowable head chamber 61 is also applicable to the configuration of FIGS. 8 to 17 described above.

In the above description, it has been described that the head chamber 61 is provided in front of the airbag 10 to protect the passenger seated in the front seat of the vehicle. However, the position of the head chamber 61 is not limited to the above, but may be further configured in a position for protecting a passenger seated in the rear seat of the vehicle.

Although the present invention has been described with reference to the accompanying drawings and the preferred embodiments described above, the present invention is not limited thereto, and is defined by the following claims. Accordingly, one of ordinary skill in the art may variously modify and modify the present invention without departing from the spirit of the appended claims.

Claims

An inner panel facing the inside of the vehicle; And

An outer panel facing the inner panel and facing toward the side of the vehicle;

A plurality of chambers are formed along the front and rear directions of the vehicle by a plurality of chamber walls defined along the front and rear directions of the inner panel and the outer panel.

An overlapping portion is formed in the front portion of the inner panel and the outer panel forming a head chamber corresponding to the head of the passenger in the vehicle among the plurality of chambers, so that the expansion thickness of the head chamber is relatively larger than that of the other chambers. Configured to increase,

The overlapping portion cuts the upper and lower edges of the inner and outer panels facing each other to form at least one pair of cut portions, and then moves the front and rear ends of the cut portions to approach each other so that the front and rear portions of the cut portions are close to each other. The side curtain airbag of the car formed by connecting them to each other.
According to claim 1, wherein the inner panel and the outer panel is folded along the longitudinal center line of the cut portion protruding in a direction protruding from the inner panel so that the front and rear ends of the cut portion next to each other, the front of the cut portion , The side curtain airbag of the car with the rear parts connected to each other.
The side curtain airbag of claim 2, further comprising a reinforcing member overlapping with the front and rear portions of the cut portion and connected with the front and rear portions of the cut portion through a sewing line.
The method according to claim 1, wherein after the inner and outer panel portions corresponding to the cut portions are folded and overlapped so that a rear portion of the cut portion overlaps the inner panel of the front portion of the cut portion, before the overlap of the cut portions, Side curtain airbags in cars with rear parts connected to each other.
5. The side curtain airbag of claim 4, wherein a reinforcement panel is interposed between the overlapping front and rear portions of the cut portion, and the stitched together with the overlapping front and rear portions of the cut portion through a sewing line.
According to claim 1, wherein the cut portion comprises a front and rear cut portion disposed in the front, rear direction around the non-cutting portion in the upper and lower edges of the inner, outer panel of the airbag,

And a front portion of the front cutout and a rear portion of the rear cutout overlap the outside of the non-cutout portion and then sew through the sewing line.
The method of claim 1, wherein the overlapping portion cuts the upper and lower edges of the inner and outer panels facing each other such that a part of the upper and lower walls of the airbag is included to form a pair of cut portions, and corresponds to the cut portions. Fold a portion of the inner panel to the inside, fold a portion of the outer panel corresponding to the cut portion in front and rear ends of the cut portion adjacent to each other, and then overlap the reinforcement panel on the front and rear portions of the cut portion The side curtain airbag of the vehicle connecting the front, rear portion and the reinforcement panel with each other through the sewing line.
The method of claim 2, wherein a portion of the inner and outer panels corresponding to the proximal end of the overlapping portion of the airbag is connected through a sewing line to form a first non-expansion region, and the overlapping portion Part of the inner and outer panels corresponding to the side curtain airbag of the vehicle is connected through the sewing line to form a second non-expansion area.