CN103569023A - Method for folding air-bag cushion - Google Patents

Abstract

The present invention relates to a folding method of an airbag cushion that minimizes sinking and damage to the windshield when the airbag cushion is deployed, including: In the first stage, using the retainer as a reference, the airbag cushion on the lower side is folded The lower part is tucked upwards and folded at least once to form the lower tucked part; in the second stage, the upper part of the airbag cushion is folded downwards at least once, and the lower tucked part is folded upwards at least once; In the third stage, the folded upper part is folded downward at least once, so that it is arranged on the front side of the holder; and in the fourth stage, the folded lower part is folded upward at least once. so that it is arranged on the front side of the upper part arranged on the front side of the holder so that the lower part tuck-in part overlaps the upper part.

Description

How to fold the airbag cushion

technical field

The present invention relates to a folding method of an airbag cushion, and more specifically, relates to a folding method of an airbag cushion which improves deployment safety.

Background technique

Generally speaking, the airbag device of a vehicle is installed in front of the driver's seat or the passenger's seat, and the airbag cushion is instantly inflated when the vehicle collides, while protecting the life and body safety of the driver and passengers.

The airbags used in vehicles are divided into driver airbags (Driver Air-Bag), which are installed on the steering wheel to protect the driver in the driver's seat; passenger airbags (Passenger Air-Bag), which are installed on the instrument in front of the passenger board to protect the passenger in the passenger seat. An airbag for the driver is a must, and a passenger airbag is an option. However, recently, the number of vehicles in which a passenger airbag is a must for the protection of passengers is increasing.

The composition of the passenger airbag device of the vehicle includes: an airbag casing, which is arranged on the instrument panel; and an inflator, which is arranged inside the airbag casing, and the gas is ejected when the vehicle collides; an airbag cushion is accommodated in the airbag The housing is deployed forward of the passenger according to the gas of the inflator; the retainer is provided on the airbag housing to support the airbag cushion so that the gas of the inflator is released to the airbag cushion.

In order to improve the deployment safety of the airbag cushion, the airbag device needs to deploy up and down simultaneously. However, there is a problem that the possibility of breaking the windshield is high due to the increase in the amount of interference between the windshield and the windshield when it is deployed up and down simultaneously.

Contents of the invention

(technical problem to be solved)

The invention provides an airbag folding method, and the problem to be solved is to improve the safety of deploying the airbag cushion and prevent the damage of the windshield when the airbag cushion is deployed.

The problems of the present invention are not limited to the problems mentioned above, and those not mentioned or other problems will be clearly understood by practitioners from the following description.

(a means of solving a problem)

In order to achieve the above-mentioned problem, the folding method of the airbag cushion according to the embodiment of the present invention includes: in the first stage, using the retainer as a reference, the lower part of the airbag cushion on the lower side is tucked up and folded more than once to the upper side, forming a lower tuck in part; in the second stage, the upper part of the airbag cushion is folded more than once downward, and the lower tuck in part is folded more than once upward; in the third stage, the folded upper part Folding the lower side more than once so that it is arranged on the front side of the holder; and in the fourth stage, the folded lower tuck-in part is folded up more than once so that it is arranged on the front side of the holder On the front side of the upper part, the lower tuck-in part overlaps the upper part of the airbag cushion.

The details of other embodiments are included in the detailed description and drawings.

(effect of invention)

The airbag cushion folding method according to the present invention has one or more effects as follows.

First, there is an advantage that the airbag cushion can be expanded.

Second, when the airbag cushion is deployed, there is an advantage that damage to the windshield can be prevented.

The effects of the present invention are not limited by the effects mentioned above, and practitioners can clearly understand the effects not mentioned or other effects from the description of the scope of claims.

Description of drawings

FIG. 1 is a drawing showing a plan view of an airbag cushion according to an embodiment of the present invention.

Fig. 2 is a side sectional view showing how an airbag cushion is installed in an automobile according to an embodiment of the present invention.

Fig. 3a is a plan view showing a first stage in a method of folding an airbag cushion according to an embodiment of the present invention.

Figure 3b is a plan view showing a second stage in the method of folding the airbag cushion according to an embodiment of the present invention.

Figure 3c is a plan view showing stage 3 in the method of folding the airbag cushion according to an embodiment of the present invention.

Figure 3d is a plan view showing stage 4 in the folding method of the airbag cushion according to an embodiment of the present invention.

Figure 3e is a plan view showing stage 5 in the method of folding the airbag cushion according to an embodiment of the present invention.

Fig. 4a is a side sectional view showing a first stage in a method of folding an airbag cushion according to an embodiment of the present invention.

Fig. 4b is a side sectional view showing the second stage in the folding method of the airbag cushion according to an embodiment of the present invention.

Figure 4c is a side sectional view showing stage 3 in the method of folding the airbag cushion according to an embodiment of the present invention.

Figure 4d is a side sectional view showing stage 4 in the folding method of the airbag cushion according to an embodiment of the present invention.

FIG. 5 is a view showing the deployment process of the airbag according to an embodiment of the present invention.

(Description of Reference Signs)

10: Airbag module 100: Airbag cushion

110: upper part 120: lower part

121: Lower tuck-up part 130: Retainer

140: Side part 141: Exhaust hole

200: Inflator 300: Airbag shell

400:Dashboard 500:Windshield

K: knee

Detailed ways

The advantages and features of the present invention, and methods for achieving them will be clarified by referring to the embodiments described later together with the attached drawings. However, the present invention is not limited to the embodiments disclosed below, but can be realized in various forms different from each other. Only this embodiment is for the purpose of making the disclosure of the present invention complete and for fully informing the scope of the invention. Those who have ordinary knowledge in the technical fields to which each invention belongs are provided, and the present invention is defined only by the scope of the claims. The same reference signs throughout the entire specification refer to the same constituent elements.

Hereinafter, the present invention will be described with reference to drawings for illustrating a method of folding an airbag cushion according to an embodiment of the present invention.

FIG. 1 is a drawing showing a plan view of an airbag cushion according to an embodiment of the present invention. Fig. 2 is a side sectional view showing how an airbag cushion is installed in an automobile according to an embodiment of the present invention.

Referring to FIGS. 1 and 2 , in an airbag cushion 100 according to an embodiment of the present invention, the size of the lower portion 120 is larger than that of the upper portion 110 based on the holder 130 on which the inflator 200 is installed.

The size of the upper part 110 of the airbag 100 is formed smaller than the size of the lower part 120 . In contrast, when the upper portion 110 of the airbag cushion 100 is deployed, the volume of the upper portion 110 is reduced to reduce the force applied to the windshield 500 . Therefore, even if the airbag cushion 100 is deployed, damage to the windshield 500 does not occur.

In addition, the lower portion 120 of the airbag cushion 100 is formed relatively large, and since the lower portion 120 sinks when the airbag cushion 100 is deployed, the knees of the passenger can be protected. (K)

The inflator 200 is a device that releases high-temperature and high-pressure gas, and inflates the airbag cushion 100 with the gas through the retainer 130 during a vehicle collision, so that the airbag cushion 100 is deployed toward a passenger.

When the upper part 110 of the airbag cushion 100 is deployed, it will be in contact with the windshield 500 , and when the lower part 120 is deployed, it will be in contact with the passenger to protect the passenger.

The airbag cushion 100 is formed with vent holes 141 to release the gas in the airbag cushion filled in the left and right side surfaces 140 to the outside.

The holder 130 has coupling protrusions for attaching the inflator 200 and forms an inflow hole through which gas flows.

Deploying the airbag cushion 100 toward the occupant will directly contact the occupant. Therefore, it is preferable that the airbag cushion 100 is made of a soft fabric material. The airbag cushion 100 is housed in the airbag case 300 of the airbag module 10 according to a folding method described later.

The airbag module 10 including the airbag cushion 100 is arranged on the side of the passenger seat, and is generally arranged on the upper side of the glove box of an ordinary vehicle. The airbag module 10 is covered by the instrument panel 400 so as not to be seen by passengers. However, when the airbag cushion 100 is deployed, the airbag cushion 100 is deployed toward the passenger while opening the instrument panel 400 .

According to an embodiment of the present invention having the same configuration as above, a method for folding the airbag cushion 100 will be explained in order as follows.

Fig. 3a is a plan view showing a first stage in a method of folding an airbag cushion according to an embodiment of the present invention. Figure 3b is a plan view showing a second stage in the method of folding the airbag cushion according to an embodiment of the present invention. Figure 3c is a plan view showing stage 3 in the method of folding the airbag cushion according to an embodiment of the present invention. Figure 3d is a plan view showing stage 4 in the folding method of the airbag cushion according to an embodiment of the present invention. Figure 3e is a plan view showing stage 5 in the method of folding the airbag cushion according to an embodiment of the present invention.

Fig. 4a is a side sectional view showing a first stage in a method of folding an airbag cushion according to an embodiment of the present invention. Fig. 4b is a side sectional view showing the second stage in the folding method of the airbag cushion according to an embodiment of the present invention. Figure 4c is a side sectional view showing stage 3 in the method of folding the airbag cushion according to an embodiment of the present invention. Figure 4d is a side sectional view showing stage 4 in the folding method of the airbag cushion according to an embodiment of the present invention.

Referring to Fig. 3a and Fig. 4d, the folding method of the airbag cushion 100 according to an embodiment of the present invention consists of 5 stages.

In the first stage, the lower part 120 of the airbag cushion 100 whose size is larger than the upper part 110 is folded upward at least once based on the retainer 130 to form a lower tuck in part 121 (tuck in part).

In addition, the upper part 110 of the airbag cushion 100 may be folded downward more than once to form the upper part. The upper part 110 of the airbag 100 may not be formed, but the upper part cannot be formed. Or even if it is formed to minimize it to the best.

Tuck-in folding is a folding method that tucks the end folds inward. In this embodiment, tucking up the end of the lower portion 120 of the folded airbag cushion 100 forms the lower tuck-in portion 121 to be opposed between the front and rear of the airbag cushion 100 where the folded portion is unfolded toward the passenger.

In the second stage, the upper part 110 of the airbag cushion 100 is folded downward more than once, and the lower part 121 is folded upward more than once. In this embodiment, the upper part 110 of the airbag cushion 100 is folded downward once, and the lower part is tucked The part 121 is folded once to the upper side, but in the embodiment of the present invention, the times of folding the upper part 110 and the lower part tuck-in part 121 may be different.

The vertical width (B) of the folded upper part 110 is formed to be larger than 1/2 of the vertical width (A) of the holder 130 . Therefore, when the folded upper portion 110 and the folded lower portion tuck 121 are overlapped and folded as described later, the space of the airbag cushion 100 can be folded to a minimum. However, the vertical width (B) of the folded upper part 110 cannot be formed larger than the vertical width (A) of the holder 130 .

The vertical width (C) of the folded lower tuck-in portion 121 is formed to be larger than 1/2 of the vertical width (A) of the holder 130 . As will be described later, when the folded upper portion 110 and the folded lower tuck-in portion 121 are overlapped and folded, the airbag cushion 100 can be folded while minimizing the space. However, the vertical width (C) of the folded lower tuck-in portion 121 cannot be formed larger than the vertical width (A) of the retainer 130 .

In the third stage, the folded upper portion 110 is folded downward at least once and placed on the front side of the holder 130 .

In the fourth stage, the folded lower tuck-in portion 121 is folded up at least once, so that it is arranged on the front side of the upper portion 110 of the airbag cushion 100 disposed on the front side of the retainer 130, and the lower tuck-in portion 121 is aligned with the airbag cushion. The upper portion 110 of 100 overlaps.

The vertical width (D) of the overlapping portion of the folded upper portion 110 and the folded lower tuck-in portion 121 is formed to be larger than 1/2 of the vertical width (A) of the holder 130 . It is preferable to make the vertical width of the folded airbag cushion 100 the same as the vertical width of the holder 130 .

The folded lower tuck-in portion 121 is disposed on the front side of the folded upper portion 110 of the airbag cushion 100 , and when the airbag cushion 100 is deployed, the end of the lower portion 120 of the airbag cushion 100 first contacts the windshield 500 . At this time, the end of the lower portion 120 of the airbag cushion 100 is deployed while passing the windshield 500 , so that the force applied to the windshield 500 can be minimized.

The fifth stage is a stage of folding the side surface portions 140 of the airbag cushion 100 folded up and down toward the retainer 130 side. The method of folding the both side surfaces 140 of the airbag cushion 100 is any one of roll folding, zigzag folding, and tuck folding. Both side surfaces 140 of the airbag cushion 100 are folded in the same shape. In this embodiment, the two side surfaces 140 of the airbag cushion 100 are folded according to the tuck-in folding method.

Zigzag folding is a folding method in which the side portion 140 of the airbag cushion 100 is folded toward the opposite side and then folded toward one side repeatedly. The roll folding is a method of rolling and folding the side portion 140 of the airbag cushion 100 .

The holder 130 is formed of a strong material, so the airbag cushion 100 can only be folded up to the periphery of the holder 130 .

In this way, the folded airbag cushion 100 is housed in the airbag case 300 , and the inflator 200 is attached to the holder 130 .

As described above, the operation of the airbag cushion 100 according to the present invention constructed as described below is as follows.

FIG. 5 is a view showing the deployment process of the airbag according to an embodiment of the present invention.

In the event of a vehicle collision, the ACU (Air-bag control unit) (not shown) senses the vehicle collision and generates high-temperature, high-pressure gas in the inflator 200 . The high-temperature, high-pressure gas generated in the inflator 200 flows into the airbag cushion 100 through the retainer 130 .

The airbag cushion 100 is deployed while high-temperature and high-pressure gas is flowed into the airbag cushion 100 , and the instrument panel 400 is opened.

First, the lower portion 120 of the airbag 100 will rapidly deploy toward the occupant. When the lower portion 120 of the airbag cushion 100 is deployed, the end of the lower portion 120 of the airbag cushion 100 first contacts the windshield 500 . At this time, the end of the lower portion 120 of the airbag cushion 100 brushes the windshield 500 while minimizing the force applied to the windshield 500 .

After the lower portion 120 of the airbag cushion 100 is partially deployed toward the passenger, the upper portion 110 of the airbag cushion 100 is also deployed toward the passenger.

Since the size of the upper part 110 of the airbag 100 is smaller than that of the lower part 120 of the airbag cushion 100, the expanded volume is also small, so that even if the upper part 110 of the airbag cushion 100 is in contact with the windshield 500, the expanded volume will be smaller. The force applied to windshield 500 is minimized. Accordingly, even if the airbag cushion 100 is deployed, damage to the windshield 500 can be prevented.

The lower portion 120 of the airbag cushion 100 is deployed horizontally toward the passenger, and is deployed downward toward the passenger's knee (K) after a certain period of time, thereby protecting the passenger's knee. (K)

The airbag cushion 100 is filled with high-temperature, high-pressure gas, and after it is fully deployed, the gas flows out through the vent holes 141 formed on the left and right side surfaces 140 of the airbag cushion 100 . Accordingly, the airbag cushion 100 becomes smaller, and the airbag cushion 100 is deployed, thereby reducing the pressure applied to the passenger.

Above, the preferred embodiment of the present invention is illustrated and described, but the present invention is not limited to the above-mentioned specific embodiment, does not exceed the key points of the present invention requested in the scope of the claims, of course, it can be based on the scope of the present invention. A person having ordinary knowledge in the technical field performs various modifications, and such modifications cannot be understood as the technical idea of the present invention or individually understood from the perspective.

Claims (10)

1. a method for folding for safety air bag, is characterized in that, comprising:

The 1st stage, take retainer as benchmark, by the bottom of the airbag cushion of downside to upside tucked in (tuck in) folding once more than, form bottom and tucked in portion;

The 2nd stage, more than folding once by the top of described airbag cushion to downside, more than the described bottom portion of having tucked in folds once to upside;

In the 3rd stage, more than described folding top is folded once to downside, make it be configured in the front side of described retainer;

The 4th stage, described folding bottom tucked in portion to upside folding once more than, make it be configured in the front side on the described top of the front side configuration of described retainer, make above-mentioned bottom tuck in portion and described top is overlapping.

2. the method for folding of airbag cushion according to claim 1, is characterized in that, also comprises:

In the 5th stage, the both sides face of described airbag cushion is folding to described retainer side.

3. the method for folding of airbag cushion according to claim 1, is characterized in that,

The size that described airbag cushion forms described bottom is larger than the size on described top.

4. the method for folding of airbag cushion according to claim 1, is characterized in that,

The width on described folding top forms 1/2 large than described retainer width.

5. the method for folding of airbag cushion according to claim 1, is characterized in that,

The width that portion has been tucked in described folding bottom forms 1/2 large than described retainer width.

6. the method for folding of airbag cushion according to claim 1, is characterized in that,

Described folding top forms larger than described retainer width 1/2 with the width that the overlapping part of portion has been tucked in described folding bottom.

7. the method for folding of airbag cushion according to claim 1, is characterized in that,

Described the 1st stage by described top to downside tucked at least folding once more than, form top and tucked in portion.

8. the method for folding of airbag cushion according to claim 2, is characterized in that,

Described both sides face forms deflation hole, flows out the gas of filling in described airbag cushion.

9. the method for folding of airbag cushion according to claim 2, is characterized in that,

Described both sides face folds, has tucked at sawtooth in folding and roll fold, at least folding with any one method.

10. the method for folding of airbag cushion according to claim 9, is characterized in that,

Both sides face is folded into identical shaped.

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