KR100942220B1 - Curtain air bag device including an inflation gas passage using a sewing pattern - Google Patents

Abstract

The present invention forms an inflation gas path using a sewing pattern instead of a metal tube to distribute the inflation gas to each air bag cushion to efficiently deliver the inflation gas and eliminate the metal tube mounting time, thereby significantly reducing the mounting process time. A curtain airbag apparatus having an expansion gas path, the apparatus comprising: an inflator (10) installed at a rear pillar (80) of a vehicle and generating an expansion gas by receiving a signal from a central controller; An airbag (20) having a plurality of air cushions (21, 22, 23, 24, 25, 26) for receiving and expanding the inflating gas from the inflator (10); A main injection hole (27) for receiving expansion gas from the inflator (10); Upper sewing patterns 31, 32, and 33 formed on the airbag 20 and forming a path 28 of expanded gas supplied to the plurality of air cushions 21, 22, 23, 24, 25, and 26. , 34, 35, 36); Six air cushions (21, 22, 23, 24, 25, and 26) formed at the bottom of the six rooms where the expansion gas is collected; Six injection holes 21 ', 22', 23 ', 24' and 25 'are formed between the upper sewing patterns 31, 32, 33, 34, 35 and 36 to inflate the expansion gas into the six air cushions. , 26 '); The airbag 20 is folded and stored, it is composed of a roof rail 50 is installed on the ceiling of the inner side of the vehicle can supply inflation gas to the air cushion without a metal tube, reduce the number of parts and simplify the installation of curtain airbags Can be.

Curtain airbag, sewing pattern, inflating gas, gas passage, air cushion

Description

Curtain air bag device including an inflation gas passage using a sewing pattern}

The present invention relates to a curtain airbag device in which an inflation gas path is formed by a sewing pattern, and in particular, an inflation gas path is formed by using a sewing pattern instead of a metal pipe and distributed to each airbag cushion to efficiently deliver the inflation gas to the mounting of the metal pipe. The present invention relates to a curtain airbag device in which an inflation gas path is formed in a sewing pattern that can greatly reduce the mounting process time by saving necessary time.

Safeguards against side collisions in vehicles include side airbags and curtain airbags, which are mounted directly on the side bolsters of the seat and always move with the seat to maintain optimum position. Mounted on the left and right sides of the ceiling, curtain airbags are deployed on the headliner above the side window frames to protect the front and rear occupants, even if the vehicle rolls over in the event of a side impact.

1 is a view schematically showing an example of a conventional curtain airbag.

As shown, the curtain air bag is an air cushion (1) disposed over a predetermined section along the roof rail (6) of the interior of the vehicle, and a cushion holder for fixing the air cushion (1) on the roof rail ( 4) and an inflator (3) having an opening (2 ') and coupled to one end of the metal pipe (2) and a diffuser (2) installed inside the air cushion (1).

The air cushion 1 communicates with the opening 2 'and seals around the metal tube 2 with a predetermined area. In addition, the inflator 3 is in communication with one end of the metal tube 2, and the connection portion thereof is tightly closed by being tightened by the clamp 5 in the state in which the air cushion 1 is wrapped.

On the other hand, the inflator (3) is electrically connected to a sensor (not shown) that detects the collision of the vehicle, one side of the air cushion (1) is supported on the front pillar (not shown) side of the air cushion (1) A tether 7 is provided for correctly guiding the deployment shape during deployment.

According to the conventional curtain airbag, a metal tube having a plurality of openings in the middle is used to provide inflation gas to a plurality of air cushions arranged from the front pillar to the rear pillar.

Therefore, there was a difficulty in managing the metal tube parts, and the metal tube and the air cushion had to be connected to each other, so that the mounting work was complicated and time consuming.

In addition, since the opening of the metal tube has a certain size, the air cushion supplied with the expansion gas through the opening close to the inflator first expands, and the air cushion in the long distance is inflated later, causing a time difference in the expansion of the air cushion.

In addition, Korean Patent No. 10-0579039 discloses a hybrid type curtain airbag device for installing a gas flow regulator in the fill hose (metal pipe) to adjust the flow of gas discharged to the rear cushion according to the injection gas pressure of the inflator.

In this conventional technique, the discharge hole of the gas flow regulator is additionally opened according to the pressure of the gas flowing through the metal pipe to supply gas to the rear cushion. However, a fill hose corresponding to the metal pipe is used to control the amount of gas supplied to the rear cushion. The use of gas flow regulators consisting of piezoelectric elements to control the device is complex and therefore does not reduce labor.

The present invention has been made to solve the above problems, an object of the present invention is to use the sewing pattern curtain air bag formed in the expansion gas path with a sewing pattern that can supply the expansion gas to the air cushion without the metal tube of the curtain air bag To provide a device.

Another object of the present invention is a sewing pattern that can provide the same amount of inflation gas to a plurality of air cushions arranged from the front pillar to the rear pillar by varying the size of the inflation gas inlet of the air cushion using a sewing pattern. It is to provide a curtain airbag device forming the expansion gas path.

It is still another object of the present invention to provide a curtain airbag device in which an expansion gas path is formed in a sewing pattern that reduces the number of parts and facilitates the installation of the curtain airbag by removing the metal tube of the curtain airbag.

Curtain airbag device formed in the expansion gas path by the sewing pattern according to the present invention for achieving the above object is installed on the rear pillar of the vehicle, the inflator for receiving the signal from the central control unit to generate the expansion gas; An airbag having a plurality of air cushions for receiving the inflation gas from the inflator and expanding the inflation gas; A main injection hole receiving the expansion gas from the inflator; An upper sewing pattern formed on an upper portion of the airbag and forming a path of an expansion gas supplied to the plurality of air cushions; Six air cushions formed at a lower portion of the six rooms where the expansion gas is collected; It is formed in the upper portion of the air bag by the upper end of the airbag and the upper sewing pattern, The upper sewing pattern is formed between the left end and the right end and six inlet for injecting inflation gas with six air cushion; The curtain airbag is folded and stored, and consists of a roof rail installed on the ceiling of the inner side of the vehicle.

The six injection holes according to the present invention have the diameters of the first injection holes: the diameter of the second injection holes: the diameter of the third injection holes: the diameter of the fourth injection holes: Diameter of the inlet: The ratio of the diameter of the sixth inlet is characterized in that 4: 3: 2: 2: 2: 1.

The six injection holes according to the present invention have the diameters of the first injection holes: the diameter of the second injection holes: the diameter of the third injection holes: the diameter of the fourth injection holes: Diameter of the inlet: The ratio of the diameter of the sixth inlet is characterized in that 4: 3: 2: 2: 1: 1.

The six injection holes according to the present invention have the diameters of the first injection holes: the diameter of the second injection holes: the diameter of the third injection holes: the diameter of the fourth injection holes: Diameter of the inlet: The ratio of the diameter of the sixth inlet is characterized in that it is determined to be 3: 2: 2: 1: 1: 1.

According to the present invention, by forming the gas passage and the inlet using the sewing pattern, the expansion gas can be supplied to the air cushion without a metal tube, and the number of parts can be reduced and the mounting work of the curtain airbag can be simplified.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 shows a curtain airbag device in which an inflation gas path is formed by a sewing pattern according to the present invention.

Curtain airbag device formed in the expansion gas path by the sewing pattern according to the present invention is installed on the rear pillars 80 of the vehicle, the inflator 10 for receiving the signal from the central control unit to generate the expansion gas; An airbag (20) having a plurality of air cushions (21, 22, 23, 24, 25, 26) for receiving and expanding the inflating gas from the inflator (10); A main injection hole (27) for receiving expansion gas from the inflator (10); Upper sewing patterns 31, 32, and 33 formed on the airbag 20 and forming a path 28 of expanded gas supplied to the plurality of air cushions 21, 22, 23, 24, 25, and 26. , 34, 35, 36); Six air cushions (21, 22, 23, 24, 25, and 26) formed at the bottom of the six rooms where the expansion gas is collected; Six injection holes 21 ', 22', 23 ', 24' and 25 'are formed between the upper sewing patterns 31, 32, 33, 34, 35 and 36 to inflate the expansion gas into the six air cushions. , 26 '); The airbag 20 is folded and stored, and consists of a roof rail 50 installed on the ceiling of the inner side of the vehicle.

The inflator 10 according to the present invention is installed on the rear pillars 80 to supply the expansion gas to the plurality of air cushions 21, 22, 23, 24, 25 and 26, and as a connecting device 11 such as a clamp. The air inlet 27 of the curtain air bag 20 is hermetically connected.

The airbag 20 is fixedly installed by a fixing device 29 such as a support clip in a state in which the airbag 20 is folded on the inner side roof rail 50 of the vehicle, and expands the gas through the inlet 27 from the inflator 10 by side impact. When it is supplied and deployed, it is installed to cover the inner side of the front and rear seat windows.

As shown, the curtain airbag 20 according to the present invention has a main inlet 27 receiving the inflation gas from the inflator 10 and a gas formed thereon so that the inflation gas injected from the main inlet 27 passes therethrough. It consists of a passage 28 and six air cushions 21, 22, 23, 24, 25, and 26 which form six chambers in which the expansion gas is collected.

Gas passage 28 according to the present invention is formed on the upper portion of the airbag 20 by the upper end of the airbag 20 and six upper sewing patterns 31, 32, 33, 34, 35, 36. Six upper sewing patterns 31, 32, 33, 34, 35 and 36 are formed between the left end and the right end to inflate the expansion gas into the six air cushions 21, 22, 23, 24, 25 and 26. Six injection holes 21 ', 22', 23 ', 24', 25 ', and 26' are formed.

A first air inlet 21 ′ is formed between the first upper sewing pattern 31 and the left end to form a first air cushion 21 formed by the left end of the airbag 20 and the first lower sewing pattern 41. Supply expansion gas to the tank. In addition, the right end portion of the first upper sewing pattern 31 extends horizontally to the middle of the second air cushion 22 and is formed to face a predetermined length downward.

The first lower sewing pattern 41 is formed in a convex shape along the left end of the airbag 20, and the right end thereof is approximately in the middle of the first upper sewing pattern 31 and the second sewing pattern 32. It is formed to be spaced apart by the width of the gas passage (28).

The second upper sewing pattern 32 extends horizontally to form a second injection hole 22 ′ between the first upper sewing pattern 31, and a left end thereof is the right side of the first upper sewing pattern 31. It is formed so as to face a predetermined length downward to the left as inclined by 60 °.

Here, the second injection hole 22 ′ is formed to be positioned in the middle of the inlet of the second air cushion 22, and the second air cushion 22 has the first lower sewing pattern 41 and the second lower sewing pattern ( 42) is convexly extended downward to the lower end of the airbag 20.

The second upper sewing pattern 32 extends horizontally from the middle of the second air cushion 22 to the middle of the third air cushion 23 and is formed such that the right end thereof faces a predetermined length downward like the left end.

The third upper sewing pattern 33 faces a predetermined length downward like the right end of the second upper sewing pattern 32 to form a third injection hole 23 ′ between the second upper sewing pattern 32 and the second upper sewing pattern 32. Is formed.

Here, the third injection hole 23 ′ is formed to be located at the inlet of the third air cushion 22, and the third air cushion 23 is formed in the second upper sewing pattern 32 of the gas passage 28. The third lower sewing pattern 43 and the fourth lower sewing pattern 44 formed to have an interval by the width are formed in a convex manner extending downward.

In addition, between the second air cushion 22 and the third air cushion 23 in a portion that passes from the second lower sewing pattern 42 to the third lower sewing pattern 43 so as not to be disturbed by the front seat back. Do not form air cushions.

The third upper sewing pattern 33 is formed in a convex, triangular shape without a base, so that the third inlet 23 'and the fourth inlet 24' are formed at approximately the same distance from the main inlet 27. The expansion gas is supplied to the air cushion 23 and the fourth air cushion 24.

Although the third air cushion 23 is formed near the center pillar, the third air cushion 23 is formed to be convex down to the lower end of the airbag 20 at an inclination of approximately 60 ° to the right, and the third lower sewing pattern 43 and the fourth lower sewing pattern 44 are formed. Is formed by

Here, the third lower sewing pattern 43 is formed from the vicinity of the center pillar 70 to the lower end of the airbag 20 so as to be inclined downward by approximately 60 ° and is approximately 1/4 the width of the center pillar 70 and the rear seat width. It is formed to have, the inlet is narrowed like a balloon is formed in a round shape convex downward.

The fourth upper sewing pattern 34 extends horizontally by the width of the fourth air cushion 24 at the portion where the fourth air cushion 24 starts, and the left and right ends thereof are approximately 60 ° to the right. It is formed by extending a certain length downwardly.

 Here, the fourth injection hole 24 ′ is formed between the right end of the third upper sewing pattern 33 and the left end of the fourth upper sewing pattern 34 to supply the inflation gas to the fourth air cushion 24. Is formed.

The fourth air cushion 24 is formed in the lower portion of the fourth upper sewing pattern 34 after the third air cushion 23 and is formed in substantially the same shape as the third air cushion, and is formed from the fourth inlet 24 '. The inlet is formed toward the fourth injection hole 24 ′ so that the expansion gas is mainly supplied.

 The fifth upper sewing pattern 35 extends horizontally from the portion where the fifth air cushion 25 starts to the middle of the sixth air cushion 26, and the left and right ends thereof are approximately 60 ° to the right. It is formed by extending a certain length downwardly.

 Here, the fifth injection hole 25 ′ is formed between the right end of the fourth upper sewing pattern 34 and the left end of the fifth upper sewing pattern 35 to supply the inflation gas to the fifth air cushion 25. Is formed.

The fifth air cushion 25 is formed below the fifth upper sewing pattern 35 after the fourth air cushion 24 and is formed in substantially the same shape as the fourth air cushion, and is formed from the fifth inlet 25 '. The inlet is formed toward the fifth inlet 25 ′ so as to receive the expanded gas mainly.

The sixth upper sewing pattern 36 extends horizontally from the middle portion of the sixth air cushion 26 to the right end portion of the airbag 20, and the left end portion thereof extends a predetermined length downward by approximately 60 ° to the right side. And the sixth injection hole 26 ′ together with the left end of the fifth upper sewing pattern 35.

 The sixth air cushion 26 is formed below the sixth upper sewing pattern 36 after the fifth air cushion 25, and unlike the fifth air cushion, the sixth air cushion 26 is formed to be convex to the middle portion of the air bag 20. It is formed to mainly receive the expansion gas from the six injection port (26 ').

However, the six injection holes 21 ', 22', 23 ', 24', 25 ', and 26' formed by the six upper sewing patterns 31, 32, 33, 34, 35 and 36 are six air. It is formed close to the inlet of the cushions 21, 22, 23, 24, 25, 26 to supply inflation gas to each air cushion, but a sewing pattern is formed so that it can communicate with each other rather than being blocked.

Therefore, the first inlet 21 ′ is only in the first air cushion 21, the second inlet 22 ′ is only in the second air cushion 22, and the third inlet 23 ′ is in the third air cushion 23. ), The fourth inlet 24 'is the fourth air cushion 24 only, the fifth inlet 25' is the fifth air cushion 25 only, and the sixth inlet 26 'is the sixth air cushion ( 26, the inflation gas is not supplied only, and in some cases, the first inlet 21 'is not only the first air cushion 21 but also the second air cushion 22 or the third, depending on the pressure difference of the expansion gas. The expansion gas can also be supplied to the air cushion 23, and the same applies to the remaining inlets.

As described above, the six inlets 21 ', 22', 23 ', 24', 25 ', and 26' are formed to be separated from each other, but are not blocked from each other, so that each inlet has the same diameter. Since the pressure of the inflation gas passing through varies close to the main inlet 27, the sixth inlet 26 ′ closest to the main inlet 27 can pass the largest inflation gas so that each air cushion The difference between the expansion rate and the expansion size may occur.

Therefore, the six inlets 21 ', 22', 23 ', 24', 25 ', and 26' vary in size depending on the distance from the main inlet 27, and especially the main inlet 27 Since the close sixth inlet 26 'is supplied with the largest amount of expansion gas first, the diameter of the sixth inlet 26' is determined to be the smallest.

Next, the diameters of the fifth inlet 25 ', the fourth inlet 24' and the third inlet 23 'located at the second, third and fourth closest distances from the main inlet 27 are The size of the sixth injection hole 26 'is set to be twice the size of the diameter.

In addition, the diameter of the second injection hole 22 'positioned at the fifth closest distance from the main injection hole 27 is determined to be three times the size of the diameter of the sixth injection hole 26'.

Finally, the size of the diameter of the first injection hole 21 ′ positioned at the longest distance from the main injection hole 27 is determined to be four times the size of the diameter of the sixth injection hole 26 ′.

That is, the diameter of the first injection hole 21 ': the diameter of the second injection hole 22': the diameter of the third injection hole 23 ': the diameter of the fourth injection hole 24': the diameter of the fifth injection hole 25 ' : The ratio of the diameters of the sixth injection holes 26 'is set to be 4: 3: 2: 2: 2: 1.

In the second embodiment, the sixth inlet 26 ′ closest to the main inlet 27 receives the largest amount of inflation gas first, and the capacity of the sixth air cushion 26 is 1/2 of that of other air cushions. Since the expansion gas injected through the sixth inlet 26 ′ fills the sixth air cushion 26 and is injected into the fifth air cushion 25, the diameter of the fifth inlet 25 ′ is determined by the sixth inlet. Same as (26 ').

Next, the diameters of the fourth injection hole 24 'and the third injection hole 23' located at the third and fourth closest distances from the main injection hole 27 are the size of the diameter of the sixth injection hole 26 '. Determine to be twice.

The diameter of the second injection hole 22 'positioned at the fifth closest distance from the main injection hole 27 is determined to be three times the size of the diameter of the sixth injection hole 26', and finally, the main injection hole 27 The size of the diameter of the first injection hole 21 ′ positioned at the furthest distance from the first injection hole 21 ′ is determined to be four times the size of the diameter of the sixth injection hole 26 ′.

Therefore, the ratio of the diameter of each injection hole according to the second embodiment is the diameter of the first injection hole 21 ': the diameter of the second injection hole 22': the diameter of the third injection hole 23 ': the fourth injection hole 24 ') Diameter: the diameter of the fifth inlet 25': the diameter of the sixth inlet (26 ') is set to 4: 3: 2: 2: 1: 1.

As a third embodiment, the ratio of the diameters of the respective injection holes is the diameter of the first injection hole 21 ': the diameter of the second injection hole 22': the diameter of the third injection hole 23 ': the fourth injection hole 24' Diameter of the fifth inlet (25 '): ratio of the diameter of the sixth inlet (26') is set to be 3: 2: 2: 1: 1: 1.

1 is a schematic diagram showing an example of a conventional curtain airbag,

2 is a curtain airbag apparatus in which a gas path is formed by a sewing pattern according to the present invention.

<Description of Symbols for Main Parts of Drawings>

10: Inflator 11: Connection

20: curtain airbag 21, 22, 23, 24, 25, 26: air cushion

21 ', 22', 23 ', 24', 25 ': inlet

31, 32, 33, 34: sewing pattern

40: roof rail

Claims (4)

An airbag installed in the rear pillar 80 of the vehicle and having an air inflator 10 that receives a signal from a central controller to generate an inflation gas, and a plurality of air cushions that receive the inflation gas from the inflator 10 to expand the gas. 20 and the main frame 27 receiving the inflation gas from the inflator 10 and the air frame 20 having a plurality of air cushions are folded and stored in the roof frame 50 installed on the ceiling of the indoor side of the vehicle. In the curtain airbag constituted, Upper sewing patterns 31, 32, 33, 34 forming the induction gas path 28 of the expansion gas supplied from the inflator 10 to the plurality of air cushions 21, 22, 23, 24, 25, 26. , 35, 36), The upper sewing patterns 31, 32, and 33 to be injected into the six air cushions 21, 22, 23, 24, 25, and 26 under the upper sewing patterns 31, 32, 33, 34, 35, and 36. , 34, 35, 36 diameter of the first inlet 21 'is formed in sequence; Second inlet 22 '; A third inlet 23 '; a fourth inlet 24'; A curtain in which the expansion gas path is formed in the sewing pattern, wherein the ratio of the diameters of the fifth inlet 25 'to the sixth inlet 26' is set to be 4: 3: 2: 2: 2: 1 Airbag. delete The method of claim 1, wherein the diameter of the first inlet 21 'for gas injection into the plurality of air cushions: The diameter of the second inlet 22': The diameter of the third inlet 23 ': Fourth The diameter of the inlet 24 ': The diameter of the fifth inlet 25': The sewing pattern characterized in that the ratio of the diameter of the sixth inlet 26 'is 4: 3: 2: 2: 1: 1. Curtain airbag that forms an inflation gas path. The method of claim 1, wherein the diameter of the first inlet 21 'for gas injection into the plurality of air cushions: the diameter of the second inlet 22': the diameter of the third inlet 23 ': fourth The diameter of the inlet 24 ': The diameter of the fifth inlet 25': The sewing pattern characterized in that the ratio of the diameter of the sixth inlet 26 'is 3: 2: 2: 1: 1: 1. Curtain airbag that forms an inflation gas path.

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