KR100714496B1 - Side air bag for automobile - Google Patents

Abstract

The present invention discloses a side airbag for a vehicle in which the inflating pressure of the side airbag is adjusted to be deployed.

The present invention is to control the inflation pressure of the airbag when the side airbag is deployed, for this purpose by dividing into a plurality of chambers to form a plurality of chamber walls between these chambers, the first development part, the second development part, the dead zone deployment part, The fourth development part, the fifth development part, and the sixth development part are formed, and the chamber wall between the dead zone development part and the fourth development part is protruded upward to bend to form an inlet of the dead zone development part in a vent hole structure, and the fourth development part and The inlet of the fourth development part is bent and formed upward to form a narrower inlet of the fourth development part, and the inlet of the fifth development part is formed to be curved upwardly so that the inlet of the fifth development part is slightly narrower. The formed side airbag for automobile is proposed.

The present invention by adjusting the inflation pressure according to the deployment speed of the side air bag can mitigate the impact when the driver's head hits the side air bag, the side of the dead zone deployment is rapidly expanded by expanding slowly There is a useful effect of being able to control the inflation pressure of the airbag.

Side airbags, dead zone deployments, chambers, chamber walls, inflators

Description

Side air bag for automobile

1 is a front view of a conventional side airbag.

2 is a block diagram of a conventional side airbag.

Figure 3 is a cross-sectional view of the side airbag according to the present invention.

4 is a cross-sectional view of a side airbag according to another embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

1: side airbag 4: inflator

5: roof rail 6: fixing bracket

10: 1st development part 11a, 11b, 11c: 1st, 2nd, 3rd chamber

12a, 12b: 1st, 2nd chamber wall 13: division part

20: second development part 21: fourth chamber

22a: third chamber wall 30: dead zone development

31a, 31b: 5th, 6th chamber 32a, 32b: 4th, 5th chamber walls

33: vent hole 40: fourth development

41: 7th chamber 42a: 6th chamber wall

50: fifth development part 51a, 51b, 51c: 8th, 9th, 10th chamber

52a, 52b, 52c: 7th, 8th, 9th chamber walls 60: 6th development part

61a, 61b: 11th, 12th chamber 62a, 62b: 10th, 11th chamber walls

The present invention relates to a side airbag for a vehicle, and more particularly, to a side airbag for a vehicle installed on the side of the occupant together with the airbags installed in the driver's seat and the passenger seat to protect the occupant during a side collision of the vehicle.

As is well known, the vehicle is provided with an airbag to mitigate the impact on the occupant together with the seat belt to protect the occupant in the event of a collision.

These airbags are installed in the driver's seat and the passenger seat to protect the driver and the front passenger, and the shock absorber serves to prevent the passenger's body from being forwardly moved by a car crash or a sudden stop during driving, so that they do not hit the steering wheel or the instrument panel directly. Done.

The airbag is operated by a collision detection sensor and an electronic control unit (ECU) in the event of a vehicle crash. The collision sensor detects a shock and sends it to the ECU when the vehicle crashes. Therefore, it is determined whether the airbag is operated, and if it is a condition to operate the airbag, the inflator is operated to inflate the airbag.

At this time, the inflator is connected to the airbag installed in a folded state, and when operated by the ECU, the heater inside thereof generates heat to ignite the gunpowder, burns the gas generating agent, and injects a large amount of expanded gas generated in an instant into the airbag. Will expand.

In recent years, in order to protect the occupant in the event of a side collision, the side airbag installed inside the door is used to protect the occupant's side.

These side airbags are installed on the roof rails of the upper and rear seats, and when an impact is applied from the side, the airbag is deployed by the inflator to protect the occupants.

A number of such side airbags have been applied. For example, the "side airbag for automobiles" (hereinafter referred to as "prior art 1") disclosed in Korean Utility Model Application No. 1999-2892.

As shown in FIG. 1, the side airbag for a vehicle of the related art 1 has a neck shape at a rear side of the delax bag 102 in a side air bag composed of a delax bag and a head bag that are deployed when a vehicle collides with the side of the car. It is composed of a mounting portion 104 and the lower end portion 106 formed away from the mounting portion 104, and is formed in a vertical symmetrical form as a whole starting from the center of the mounting portion 104, the tether 103 is further Located between the lock bag 102 and the head bag 101, a vent hole is formed away from the mounting part 104, and the pull plate 105 and the lock bag 102 are symmetrically moved to the head bag 101. Extend, form.

Such side airbags have the advantage of reducing fluctuations when deploying airbags, but are separately installed in the front seat or the rear seat, which takes a long time required for the installation of the side airbags, as well as a large number of working processes, thereby degrading work efficiency.

In order to solve such a disadvantage, Korean Patent Application No. 2002-667326 discloses a "side airbag for a vehicle" (hereinafter referred to as "prior art 2") is disclosed.

As shown in FIG. 2, the side airbag for a vehicle of the related art 2 is installed in an airbag 200 installed inside the headlining of the roofside panel 100 and on one side of the airbag 200. The inflator 300 in which a gas generating agent is stored so that the airbag 200 can be deployed in a side impact, and one end is connected to the airbag 200, and the other end is rotatably installed on the roofside panel 100. The member 220 is comprised.

This side airbag has the advantage of operating the front and rear seats as a single airbag, but it is not possible to properly adjust the inflation pressure of the side airbag when the side airbag is deployed, and thus a strong impact on the occupant when the side airbag is deployed. There is a problem that is applied to the scratches or to the reaction to the occupant to be bounced off and hit the other parts to be injured.

The present invention is to solve the above problems, to provide a side airbag for a vehicle for adjusting the inflation pressure of the airbag when the side airbag is deployed.

In order to achieve the above object, the present invention provides a side airbag installed on the roof rail of the driver's seat and the rear seat, protruding chamber walls partitioning the chambers between the plurality of divided chambers, and forming the chamber walls in the inflator. It is formed to be curved in the same direction as the traveling direction of the inflated gas is ejected so as to project the first development portion, the second development portion and the dead zone development portion sequentially formed on the driver's seat side, and the chamber walls partitioning these chambers between the plurality of divided chambers. It is formed, and each chamber wall is formed to be curved in the same direction as the traveling direction of the expansion gas ejected from the inflator to propose a side airbag for automobiles comprising a fourth deployment, a fifth deployment and a sixth deployment sequentially formed on the rear seat side .

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

3 is a cross-sectional view of the side airbag according to the present invention.

As shown in the drawing, the side airbag 1 of the present invention includes a driver's side airbag 2 including a first deployment portion 10, a second deployment portion 20, and a dead zone deployment portion 30, which are formed of a plurality of divided chambers. ) And a rear seat side airbag (3) consisting of a fourth deployment portion (40), a fifth deployment portion (50), and a sixth development portion (60) formed of a plurality of divided chambers.

In addition, the first deployment portion 10 of the driver's side airbag 2 is composed of three chambers 11a, 11b, and 11c, and a first chamber wall 12a protruding upward between these chambers 11a to 11c. ) And the second chamber wall 12b.

These chamber walls 12a and 12b are formed with different heights. The first chamber walls 12a are formed to be curved inwardly, and the second chamber walls 12b are formed to be inclined upwardly.

In addition, the second development part 20 is formed of a single chamber, and the dead zone deployment part 30 is formed adjacent thereto. In addition, a third chamber wall 22a is formed between the third chamber 11c of the first development part 10 and the fourth chamber 21 of the second development part 20, and the third chamber wall 22a is formed. It is formed higher than the 1st, 2nd chamber wall 12a, 12b.

In addition, the dead zone deployment part 30 is formed at approximately the head position of the driver, and is composed of two chambers, the fifth chamber 31a and the sixth chamber 31b, and the fourth chamber 21 and the fifth chamber. A fourth chamber wall 32a is formed between the first and second chambers 31a, and a fifth chamber wall 32b is formed between the fifth chamber 31a and the sixth chamber 31b.

In addition, the fourth development part 40 adjacent to the dead zone deployment part 30 is composed of a seventh chamber 41 which is one chamber, and a sixth chamber wall between the sixth chamber 31b and the seventh chamber 41. To form 42a. The sixth chamber wall 42a is formed to protrude upward and then bent to be positioned adjacent to the fourth chamber wall 32a.

That is, the fourth chamber wall 32a and the sixth chamber wall 42a are introduced into the dead zone developing part 30 after the inflow of the expansion gas into the second developing part 20 so that the dead zone developing part 30 gradually develops. Between the vent holes 33 form a structure.

In addition, each of the chamber walls 12a, 12b, 22a, 32a, 32b, and 42a forms a tip of the chamber in a seam structure so that the inlet side of each of the chambers 11a to 11c, 21, 31a, 31b, and 41 is formed. By forming a rather narrow, the inflow of the inflation gas is introduced at a slower rate and developed.

In addition, the rear seat side airbag (3) consists of the fourth deployment unit 40 to the sixth deployment unit 60, which is located approximately in the rear seat to protect the side of the rear occupant, the side airbag (1) of the present invention The present invention is not limited thereto and is divided for convenience in order to help the understanding of the present invention.

In addition, the fifth development part 50 includes three chambers, an eighth chamber 51a, a ninth chamber 51b, and a tenth chamber 51c, and a seventh chamber 41 of the fourth development part 40. A seventh chamber wall 52a is formed between the eighth chambers 51a of the fifth development part 50, which protrudes upward to be bent in the direction of the dead zone deployment part 30 at a predetermined height to form the fourth development part 40. The entrance is somewhat narrower.

In addition, an eighth chamber wall 52b is formed between the eighth chamber 51a and the ninth chamber 51b, and a ninth chamber wall 52c between the ninth chamber 51b and the tenth chamber 51c. To form.

In addition, the sixth development part 60 includes two chambers, an eleventh chamber 61a and a twelfth chamber 61b, and the tenth chamber 51c and the eleventh chamber 61a of the fifth deployment part 50. The tenth chamber wall (62a) is formed between the, which is formed to be curved in the direction of the fourth development portion 40 to form a slightly narrower inlet of the fifth development portion (50).

In addition, an eleventh chamber wall 62b is formed between the eleventh chamber 61a and the twelfth chamber 61b.

The chamber walls 52a, 52b, 52c, 62a, and 62b form a tip of the chamber walls with a seam structure to form a slightly narrower inlet of the fourth and fifth development parts 40 and 50.

In addition, the upper side of the side airbag (1) is provided with an inflator (4) for blowing out the expansion gas to deploy the airbag, such a side airbag (1) is fixed to the fixing bracket (6) of the roof rail (5) Fix it with the fixing means.

According to the present invention having the above configuration, the collision detection sensor detects the intensity of the collision at the time of the collision of the vehicle and sends it to the ECU, and determines whether the side airbag 1 is operated in the ECU.

In such an ECU, when a strong shock is applied to the side of the vehicle, the ECU sends a signal to the inflator 4 to operate the side airbag 1, and in the inflator 4, the internal ignition circuit generates electric ignition in a short time. By igniting the ignition agent the built-in gunpowder detonates.

The side airbag 1 is deployed by the expansion gas generated by the heat generated by the explosion of the explosive by burning the gas generating agent.

Particularly, the side airbag 1 of the present invention includes the tenth chamber wall 62a and the seventh chamber wall in the same direction as that of the inflation gas ejected from the inflator 4 provided on the rear seat roof rail 5. 52a) and the sixth chamber wall 42a are formed to be curved so that the expansion gas proceeds straight.

As a result, the expansion gas flows into the chambers 11a to 11c of the first deployment unit 10, and the second deployment unit 20 including the fourth chamber 21 is developed. In addition, the dead zone deployment portion 30 begins to develop through the vent hole 33 between the fourth chamber wall 32a and the sixth chamber wall 42a with the development of the second deployment portion 20. Since the expansion gas is introduced through the vent hole 33, which is a narrow passage, the speed of deployment is slow.

At the same time, the fourth development part 40 starts to develop, which is because the seventh chamber wall 52a is inclined toward the sixth chamber wall 42a and the fourth development part 40 after the second development part 20 is developed. Is developed.

In this way, after the fifth deployment unit 50 and the sixth deployment unit 60 are developed after the deployment of the fourth deployment unit 40, the development of the dead zone deployment unit 30 adjacent to the second deployment unit 20 is completed.

In particular, since a small amount of expansion gas is introduced into the vent hole 33, the dead zone deployment part 30 of the present invention develops later than other deployment parts 40, 50, and 60 so that the driver's head collides. The dead zone deployment part 30 is developed to have a proper pressure by the inflated gas, and then to the vent hole 33 after the deployment of the remaining deployment parts 10, 20, 30, 40, 50, and 60. It expands by the volume of the introduced expansion gas.

Since the deployment of the side airbag 1 is made in an instant, the dead zone deployment portion 30 of the present invention is slower than the other deployment portions 10, 20, 40, 50, 60, the expansion speed of the vehicle After a side impact, the impact on the driver's side, or head, is gently applied.

In addition, another embodiment of the present invention is shown in Figure 4, since the first and sixth development portion 10 to 60 is the same, the configuration and operation thereof will be omitted.

According to another embodiment of the present invention, the splitting part 13 is formed on the first developing part 10 so that the expanded gas ejected from the inflator 4 flows into the first developing part 10 when the upper part of the splitting part 13 is introduced. The first chamber 11a is developed by the expansion gas which has advanced to the passage formed in the passage.

At the same time, the second chamber 11b and the third chamber 11c of the first development part 10 are developed by the expansion gas which has advanced to the passage formed in the lower part of the division part 13, so that the deployment speed of the first development part 10 is increased. Deploy more quickly.

As described above, the present invention can reduce and protect the impact applied to the driver's head among the occupants by controlling the inflation pressure as well as the inflation pressure of the side airbag 1.

The present invention by adjusting the inflation pressure according to the deployment speed of the side air bag can mitigate the impact when the driver's head hits the side air bag, the side of the dead zone deployment is rapidly expanded by expanding slowly There is a useful effect of being able to control the inflation pressure of the airbag.

Claims (7)

In the side airbags installed on the roof rails of the driver's seat and upper rear seats, The chamber walls partitioning these chambers are formed to protrude between the plurality of divided chambers, and the chamber walls are formed to be curved in the same direction as the traveling direction of the expansion gas ejected from the inflator, so that the chamber walls are sequentially formed from the driver's seat toward the rear seat. The driver's side airbag having a first deployment part, a second development part, and a dead zone deployment part; A fourth development part formed sequentially on the rear seat side by forming chamber walls that protrude between the plurality of divided chambers so as to protrude, and forming the respective chamber walls to be curved in the same direction as the traveling direction of the expansion gas ejected from the inflator, An automobile side airbag comprising a rear seat side airbag having a fifth deployment portion and a sixth deployment portion. The method of claim 1, The dead zone deployment part is a side airbag for a vehicle, characterized in that the vent hole structure is protruded and bent upwards and the fourth chamber wall adjacent to the fourth development part is spaced apart from the fourth chamber wall to gradually inflow of the inlet gas. The method of claim 1, And the first deployment part is formed of three chambers and two chamber walls. The method of claim 1, A side airbag for an automobile, wherein the fourth development part and the fifth development part protrude upwardly and are bent toward the fourth development part to form a seventh chamber wall with a slightly narrower inlet of the fourth development part. The method of claim 1, The side airbag for a vehicle, characterized in that the inlet of the fifth development part is formed slightly narrower by protruding the tenth chamber wall upwardly between the fifth and sixth development parts. The method according to any one of claims 1 to 5, The front side airbag of the vehicle, characterized in that the front end of the chamber walls (Seam) structure. The method of claim 1, The vehicle side airbag of claim 1, wherein a splitting portion for dividing a passage of the inflation gas ejected from the inflator is selectively formed on the first deployment portion.

Images